The compound crusher has a high crushing capacity for hard materials, and is widely used in the crushing of machine-made sand, gravel and metal ores. We all know that we humans also need to undergo medical examinations at regular intervals, and machines are of course no exception. Routine overhaul and maintenance can discover and solve problems in advance, so as not to cause big losses. The following crusher manufacturers have sorted out the inspection and maintenance methods for the composite crusher, please look down!

Overhaul of compound crusher

1. The reliability and sensitivity of the air pressure automatic switch. The start and stop of the compound crusher are usually directly driven by the air pressure automatic switch (air pressure relay) to directly drive the AC contactor to automatically control the motor. Most of the pneumatic automatic switches adopt a mechanical structure, which uses springs to compress and release energy to operate the contacts. Perhaps it is due to the congenital deficiency of the automatic air pressure switch or the influence of different reasons such as improper adjustment and machine vibration.

2. The mechanical operation of the compound crusher is relatively simple in electrical control (not the low-power type). Generally, it is a single unit that works on a stand-alone basis. It is in an unemployed situation and the failure is not handled in time. Relatively speaking, the failure is repeated and enlarged. The rate has increased.

3. Hammer head loss: The lime crushing function is mainly realized by the series of impact, impact, shearing, squeezing and other forces between the hammer head and liner of the composite crusher and the lime. The hammer head is one of the main easy-wearing parts. After a fixed time of work, the working surface of the hammer head will be damaged and the surface shape will change. At this time, the gap between the hammer head and the liner (generally required to be less than 10mm) increases , The friction force between each other is greatly reduced, which is the main form of hammer wear loss.

The loss of the hammer is inevitable, and only the use time of the hammer can be increased as much as possible. First, ensure the accuracy of the lime entering the composite crusher, and avoid metal lumps and other sundries entering the composite crusher to damage the hammer or liner.

Compound Crusher

Secondly, wear-resistant materials such as high-carbon manganese alloy cast steel or cast white iron are used as the hammer head material to improve the wear resistance coefficient of the hammer head and reduce the loss in the general case of the number of replacements. It can also be achieved by adjusting the hammer head.

The technical parameters of the crusher will also affect the service life of the hammer, the main ones being the power and speed of the rotor. They are not only related to the production capacity of the crusher, but also to the degree of impact hardening of the hammer. The hammer head has a good impact hardening degree, and its service life will be prolonged. It is found that the hammer mill loss is serious, and it must be replaced or repaired in time to ensure the normal ability of crushing lime.

4. Bearing problems: Bearing damage is mainly caused by the unbalanced installation of the rotor or bearing, the aging of the bearing seal ring, the dust entering after wear, the partial force of the rotor during high-speed operation, and the insufficient lubrication of the bearing. Limited by the working environment and working methods, it is required to adopt the specified coordination coefficient; when installing, pay attention to the balanced installation of the rotor. Generally, the bearing with strong load-bearing capacity and good self-aligning performance is used as the rotor bearing. The calculated life of the bearing should be selected 5000-10000h is appropriate.

Due to the limitation of the working environment and working mode of the compound crusher, the matching requirements between the outer ring of the bearing and the bearing seat hole and the inner ring of the bearing and the journal are different from those of ordinary equipment, and the specified matching coefficient is required. Pay attention to the balanced installation of the rotor during installation. Lubricating oil should be added to the bearings regularly to ensure that the metal hard pieces do not enter the composite crusher, so as to prevent the rotor and the bearing from being damaged by strong local forces and causing damage to the hammer. In addition, pay attention to the replacement of hammerheads that are seriously damaged, so as to prevent hammerheads with different masses from generating different centrifugal forces during high-speed operation, which will cause the rotor and bearings to be unbalanced and worn during operation.

5. Sound failure: During the operation of the compound crusher, a very violent percussion sound is produced in the crushing cavity.

Firstly, immediately turn off the power of the crusher, stop the machine and clean the crushing cavity; secondly, the machine will produce huge vibrations during operation, check whether any materials that cannot be crushed enter the crushing cavity; then, check the tightening of the liner and the hammer The gap between the liner and the liner is to confirm whether the wear-resistant liner has fallen off.

6. Particle size problem: The particle size of the compound crusher is too large during the discharging process.

First, adjust the front and rear impact frame gaps or replace severely worn liners and hammers; second, adjust the position of the impact frame so that the two sides and the frame liner can reach the relative gap to ensure the discharge granularity.

Daily maintenance of compound crusher

The compound crusher is mainly used for crushing the stone material, and it bears a relatively large degree of wear and pressure, so the operator needs to check and maintain the crushing equipment on a regular basis. We often say that we need to maintain the equipment, so what should we do to maintain the equipment? What are the main things to do?

1. The first thing to do is the daily inspection: the daily inspection of the composite crusher is the inspection before opening and during operation. The inspection includes the wear condition of the parts, whether the bearing is lubricated, whether the fasteners or bolts are loose, and the machine Check whether the discharge granularity of the equipment is uniform, whether there is abnormal vibration inside the cylinder, and whether the temperature rise of the compound crusher is normal. This is a basic matter and must be checked well, otherwise it will malfunction and affect normal work.

2. Then there is the important lubrication work: the lubricating oil is to reduce the friction of the equipment and reduce the degree of equipment damage. This requires that there should be no impurities or other sundries in the lubricating oil. The bearing oil needs to be filled with half of the solvent in the entire space. If the oil is too full, the grease will easily overflow. Be sure to pay attention to the lubricating oil temperature during operation to avoid excessive temperature and burn out parts.

3. Pay attention to keeping the equipment clean: the crusher is crushing stones, and it is inevitable that dust will enter. If the equipment is cleaned irregularly, it will cause the equipment to wear out, so it should be cleaned regularly.

4. On the plane of the bottom frame of the movable device, dust and other debris should be removed to prevent the movable bearing from moving on the bottom frame when the machine encounters unbreakable materials, which may cause serious accidents.

crusher

Maintenance of compound crusher

(1) Mainly operating workers, assisted by maintenance workers, dismantling and inspecting parts of the equipment according to the plan, cleaning the specified parts, dredging the oil passages and pipelines, replacing or cleaning the oil lines, felts, and oil filters, and adjusting various parts of the equipment Fit the gap and tighten all parts of the equipment. The maintenance time is 2-4h. After the warranty is completed, a record should be made and the defects that have not been cleared should be noted. The Mechanical and Electrical Equipment Department organizes the acceptance. The operator should fill in the maintenance record in detail, and the acceptance form shall be submitted to the Equipment Department for archiving.

(2) Mainly maintenance workers, and operators participate to complete. 2. Maintenance is included in the equipment maintenance plan, part of the equipment is disassembled, inspected and repaired, worn parts replaced or repaired, cleaned, oil changed, and electrical parts are inspected and repaired, so that the technical condition of the equipment meets the requirements of the prescribed equipment integrity standards. Second, the maintenance time is about 1-3 days. After the completion of the second guarantee, the maintenance worker shall fill in the detailed maintenance record, which shall be checked and accepted by the Mechanical and Electrical Equipment Department and the operator, and the acceptance form shall be submitted to the Equipment Department for archiving.

(3) A compulsory maintenance system that focuses on the operator and pays equal attention to the maintenance of the equipment. The three-maintenance system is to rely on the staff, give full play to the proactiveness of the staff, implement group management and group repair, group combination, and there are ways to do a good job in equipment maintenance.

After reading the article, know the daily inspection and maintenance methods of the compound crusher. These are all necessary. Routine overhaul and maintenance of the compound crusher can increase the life of the equipment and increase productivity.

The high-pressure roller mill is very popular in today’s major mining companies. The reason cannot be separated from its efficiency and energy saving. For some small partners who have not yet purchased, the high-pressure roller mill is still a relatively unfamiliar crushing equipment, so When purchasing, it is not clear what kind of power equipment you want, so the high-pressure roller mill manufacturer is here to help you select the high-pressure roller mill, and hope that everyone can choose the right equipment.

Advantages of high-pressure roller mill

The high-pressure roller mill has a good crushing effect and strong processing capacity, which can greatly improve the processing capacity of the ball mill. It has high energy-saving effects and considerable economic benefits. It is suitable for crushing and grinding a variety of metal ores, non-metal ores, pellets, steel slag, etc. Operations can bring many improvements to various production systems:

1. After the crushing system is added to the high-pressure roller mill, the particle size of the fine crushed cone discharge can be doubled, which can increase the production capacity and reduce the energy consumption of the crushing;

2. After the grinding system is added to the high-pressure roller mill, the particle size of the ball mill is greatly reduced. While increasing energy and reducing consumption, the broken minerals are microscopically cracked along the crystal lattice direction, thereby improving the grinding efficiency and benefiting Later selection of minerals;

3. The production process of the high-pressure roller mill enables the material to achieve “more crushing and less grinding”, which can reach the ultra-fine particle size of less than 3 mm.

High-Pressure Grinding Rolls

Selection method of high pressure roller mill

The selection of the high-pressure roller mill is mainly determined by the unit processing capacity of the equipment, motor power, roll gap and roll surface life. These data are different for equipment of different specifications:

1. Unit processing capacity

According to different feeding particle size, ore hardness, ore density and product size requirements, the unit processing capacity of the same high-pressure roller mill is also different. If you want to choose equipment with higher processing capacity, you need to have the requirements for materials and products. I have a deep understanding that under normal circumstances, the density of the cake is about 85% of the density of the ore. The factors that affect the unit processing capacity of the high-pressure roller mill are:

(1) Diameter of pressure roller of high pressure roller mill;

(2) Width of pressure roller of high pressure roller mill;

(3) The linear velocity of the pressure roller of the high-pressure roller mill, etc.

2. Motor power

The motor power of the high-pressure roller mill does not correspond to its specifications and models. It is usually calculated and determined by the tested unit power consumption. The power of a single motor should be 0.69 high-pressure roller mill unit processing capacity multiplied by unit power consumption. Some small partners choose to choose a larger motor, which causes energy waste.

3. Roll gap and roll surface

Roll gap and roll surface are also one of the factors in the selection of high-pressure roller mills. A reasonable roll gap should be between 2.8% and 3.0% of the roll surface diameter, and the feed size should not exceed the width of the roll gap; Under normal circumstances, the width of the side material is twice the reasonable roll gap, and the smaller the occupancy rate of the side material, the better the rolling effect. Therefore, as far as possible, choose a device with a wider roll surface while ensuring the performance of the equipment.

4. Roll surface quality and linear speed

The roller surface material is an important factor in determining the life of the roller surface. Therefore, when selecting a high-pressure roller mill, you must understand what the material used on the roller surface is. At the same time, it is recommended to select a linear speed equivalent to the diameter of the roller surface. The upper guarantees the life of the roller surface.

5. Recommendations for selection

Based on the above selection factors, it can be seen that the larger the size of the high-pressure roller mill, the better. Due to the different feed size, it is not a good choice to choose a larger size high-pressure roller mill. Therefore, it is recommended to ensure that the When the throughput is satisfied, choose a model with a smaller roll surface diameter as much as possible. The advantages of doing so are:

(1) The roll diameter is small and the roll width is large, which can reduce the influence of the boundary effect on the crushing effect;

(2) Reduce the weight of the whole machine, reduce the tonnage of the plant, and reduce the investment in civil construction;

(3) Reduce the inventory value of spare parts;

(4) Conventional spare parts can be exchanged and deployed to effectively ensure the stability of the system.

Use of roller mill

Precautions for the use of high-pressure roller mill

1. The system pressure should be determined according to the nature of the crushed minerals by the high-pressure roller mill and the qualified particle size to be crushed. When meeting the crushing particle size requirements of the production, the smaller the roller surface pressure, the better. If the pressure on the roller surface is large, the energy consumption will be large, the wear of the roller surface will be aggravated, and the economic cost will increase. At the same time, the crushing effect does not increase linearly with the increase of the roller surface pressure. When the material is crushed to a certain extent, the roller surface pressure increases, and the crushing effect almost changes little.

2. At present, there are mainly three types of roll surface on the market: surfacing roll surface, alloy roll surface and stud roll surface. It can be selected according to different material properties. In addition to quality and linear speed, everyone should pay attention to the particle size of the feed when using it. If the feed size is too hard and wear-resistant, it will easily wear the roll surface. At the same time, pay attention to prevent the entry of metal objects, and directly Damage to the roll surface.

3. The moisture content of the material will affect the establishment of the pressure chamber of the high-pressure roller mill. If the moisture content of the material is large, it is difficult to form a material cushion, and the roller surface matrix will wear out quickly without the material cushion. But at the same time, the material cannot be completely water-free, especially when the grinding particle size is relatively small (less than 1 mm), the dried material is prone to pulse-like vibration, which has a great impact on the entire high-pressure roller mill. Under normal circumstances, the moisture content of the material should be controlled between 1.5% and 8%.

The above is all the content of the high-pressure roller mill selection suggestions, which are the methods we summarized through other documents and test results. I hope it can be helpful to everyone.

The working environment of the briquetting machine is harsh and the work intensity is high. There are different points of attention for the work of the briquetting machine in different periods. The necessary maintenance and maintenance can extend the use time and life of the briquetting machine. Next, the editor of Luoyang Zhongyuan Mining Machinery will tell you what are the different points of attention in different stages of briquetting machines.

1. Test machine phase

The relevant installation and preparation work must be done before the test machine. Plan ahead and sort out the installation of the machine, preparation of materials, etc. After starting the machine, it must be idling for a few minutes before loading. The significance of this process lies in the preheating of the machine’s running-in. And if there is a problem, it can be repaired and solved in advance in time. It will be very troublesome and inconvenient to solve the problem after the material is put into production.

High pressure briquetting machine

2. Preparation before production

Check whether the circuit is connected properly and whether the raw materials are adequately prepared. In the absence of raw materials, the restricted balls are unstable. Only by ensuring sufficient materials can the restricted balls be robust and not easily broken.

Medium-Pressure-Briquette-Machine

3. The production stage

In the production process, the material supply time must be adjusted. If the supply is insufficient, the pressed ball will be unstable, so the decision should be made according to the situation of the ball when the material is supplied. The better strength prevails. If the strength is too small, the strength is not good. If the size is too large, the machine will become too heavy, which will cause the motor to be too heavy, and it is easy to damage the machine or burn the motor. Time to monitor whether the conveyor position is normal. When the conveyor position is not normal, you need to adjust the base support. If there is a deviation, you must correct it in time.

4. After production

In the briquetting process, there will be a lot of dust and other dirty materials in the briquetting machine. After use, it must be mechanically cleaned. Check whether the machine is faulty, such as whether the screws are loose or not. In many cases, major faults are caused by minor problems. Therefore, we must clean and inspect the equipment after production.

For various coal-related industries and powder processing enterprises, the ball press machine is very familiar, and it should be very clear. The entire material forming production line can be collectively referred to as the ball press production line, because the core of the entire material forming The equipment is a ball press.

When using the briquetting machine production line for material processing, the unavoidable topic is the precautions for use, because the correct use can ensure normal and effective production. As a professional briquetting machine manufacturer, Zhongyuan summarizes several precautions for using the briquetting machine production line ,For reference.

1. Familiar with the equipment and use it skillfully

Operators must be proficient in the structure and performance of the ball press equipment production line and the role of each component. Only by understanding the principle of the equipment, the structure and performance of each part, can the ball press be used correctly and better, so as to avoid some unnecessary errors. , Resulting in dangerous situations such as equipment damage and safety accidents.

Medium-Pressure-Briquette-Machine

2. Ensure lubrication measures

For mechanical equipment, the interaction between parts and components, and between parts and parts, is the basic principle of transmitting equipment power. If the transmission components such as bearings and gears cannot be properly lubricated, it may cause them to be lubricated. The transmission and work are stuck, or even damaged during hard work, which affects safety and normal production. Therefore, lubricate the parts marked in the lubrication diagram while keeping the lubrication points clean.

3. Pay attention to check the production line and equipment

When the ball press equipment production line is in operation, pay attention to check that the bearing temperature of each part does not exceed 60℃, and check whether the bolts of each part are loose, whether there are abnormal noises in the transmission part, and whether the equipment is abnormal. If there is a problem with the equipment parts, it is necessary to stop work in time to maintain the equipment to prevent accidents.High pressure briquetting machine

4. Ensure cleanliness

A clean and tidy working environment is also one of the necessary environments to improve work efficiency. The ball press production line processes powdery materials, so it is normal for dust to be present during work, but after finishing work, it is necessary to deal with the dust floating on the equipment in time. In order to prevent dust from entering the equipment and abrasion of equipment parts, in addition to the working area of ??the ball press production line, it is necessary to ensure the sanitation and cleanliness of other areas, so that employees have a good working environment.

5. Adhere to the “Four Sets” principle

The operators of the ball press production line must abide by the “four determinations” principle, that is, determine the project, determine the personnel, determine the time, and determine the measures. The “Four Sets” principle of safe production is the basic requirement to ensure safe production, and it is also the basic management method. No matter how high the production output is, it is not as important as safe production.

The above are the precautions for the ball press production line summarized by the ball press manufacturer. In general, safe production is the foundation of production. Not only the safety of equipment, but also the safety of personnel and the safety of products are very important.

In recent years, powder metallurgy has gradually become a processing method for manufacturing new materials. Powder metallurgy is a process in which various metal powders are used as raw materials to manufacture finished products and metal materials through compression molding, sintering and necessary subsequent processing. With the use of cheap iron powder, powder metallurgy technology has begun to be applied on a large scale in industries such as automobiles and textiles. Speaking of powder metallurgy, it is inseparable from the powder briquetting machine, which is a kind of equipment that presses the powdery materials that are difficult to press into balls. So what are the advantages of the powder briquetting machine for the metallurgical industry?

The application advantages of powder briquetting machine in the metallurgical industry are mainly reflected in the following aspects:

High pressure briquetting machine

1. Environmental aspects

Powder scrap should be a relatively difficult project for the metallurgical industry. Stacking and occupying space will also cause certain pollution to the environment, and it will be more troublesome to transport. The powder briquetting machine is also more effective in collecting dust. It can be said that it can play a very good role in improving the environment. If the metal powder is directly transported, it will not only cause dust leakage and pollution problems, but also cause material loss.

2. Resource reuse

For the metallurgical industry, the value of many dust and scraps is still relatively high. For example, many metallurgical powders can be produced through general-purpose and platform-based technologies to achieve many new materials. Its scalability is very strong, and the pellets can be re-invested in production research through the compression of the mineral powder briquetting machine, which greatly increases the profit of the enterprise.

Medium-Pressure-Briquette-Machine

Because metal powder cannot be directly used for smelting, it needs to be pressed into pellets before it can be put into furnace metallurgy. Therefore, the application of powder briquetting machine in the metallurgical industry is more and more extensive. Here, Zhongyuan mining equipment manufacturers remind everyone to use it. When the mineral powder briquetting machine is used, the material should be pretreated to prevent the material from jamming and clogging at the feed inlet. At the same time, it can also improve the spheronization rate and the strength of the mineral powder briquetting machine.

For employees working on the factory floor, no matter how hard they are, no matter how tired they are, it is their job. The content of work cannot affect their working mood, and then affect their work quality. On the contrary, under the influence of some other external factors, it will affect the physical and mental health of employees. There is a lot of damage, one of which is the noise made by mechanical equipment, especially the noise of large-scale mechanical equipment.

As a large-scale forming machinery and equipment, the ball press machine emits much louder noise than other small equipment. Under the influence of the noise of the ball press machine, the hearing and mood of the employees will deteriorate, and the corresponding work .The efficiency will definitely drop a lot, so how to reduce the noise of the ball press has become a problem that all operators need to solve.

For mechanical equipment such as briquetting machine, the noise source is nothing more than the friction sound of various parts, the sound of parts impact, the noise of gears, the noise of bearings, etc. To completely eliminate these noises is a idiotic dream, which is impossible to achieve, but it can be achieved through appropriate Way to reduce these noises.

Reduce the noise of the briquetting machine

Metal-briquette-machine

1. Reduce the gap between components

The briquetting machine, like other mechanical equipment, has component gaps. Because of the gaps between the components, the components collide with each other during work, which will generate noise. Anyone who understands mechanical fit knows that it is impossible to eliminate this kind of gap, but if we can reduce the gap, then the corresponding collision noise will be reduced.

2. Partial isolation

To reduce the noise of the briquetting machine, a simple and rude way is to isolate some of the noise-producing parts, such as isolating the motor. In order to prevent the motor from overheating, the motor can be placed on the other side of the wall during installation. , And ensure smooth maintenance, in order to achieve the effect of sound insulation and noise reduction.

3. Use bottom noise bearings

For the briquetting machine, the bearing is a part that runs through the entire equipment. If the bearing used is inferior, not to mention, the noise alone cannot meet the work requirements, so when choosing to buy the briquetting machine, be sure to confirm The bearings it uses are pros and cons. The bearing is a bit too long when it gets bigger. You only need to know that the bearings also have bottom noise bearings and silent bearings. You can choose equipment for bearings.

To sum up, when buying and installing a ball press machine, you must first choose a regular factory, such as the ball press machine produced by Luoyang Zhongyuan Mining Machinery Equipment Co., Ltd., which has fine workmanship, small gaps between components, and correspondingly low noise. Moreover, the installation workers of large factories are trained and guided, and the gap will be minimized during installation.

Noise reduction during feeding

High pressure briquetting machine

To reduce the noise of the ball press machine, it is not enough to reduce the noise of the equipment, because the work of the ball press machine is actually to process the materials in the entire production line, so noise reduction work should also be carried out during feeding. . For other equipment in the production line, we can deal with it in accordance with the noise reduction method of mechanical equipment, but other methods are needed during the feeding process.

1. Reduce bulk materials

After the material is crushed by the crusher, the size of the material is different. The large material is not stable enough in the transportation process, it will produce rolling displacement, and then make a louder sound. Therefore, it is necessary to select the large material and proceed to the second step. After the second crushing, enter the ball press equipment.

2. Pick out the metal block

The collision and friction between the metal block and the conveying belt conveyor is also one of the sources of noise. Moreover, the metal block and other metal impurities enter the ball press directly without being selected, which will also cause damage to the roller skin. Rationale.

3. Reduce belt friction

The feeding belt conveyor and feeding bearings should be maintained in time. If the noise of the bearing is less oily and worn, and the belt friction sound is emitted one after another, it can be regarded as “adding fire” to the entire working environment.

Noise reduction outside the working environment of the equipment

Medium-Pressure-Briquette-Machine

In addition to the urgent reduction of noise in the working area of the ball press equipment, noise reduction outside the working area is also very necessary. After all, an enterprise cannot have only one molding equipment assembly line, but there are still other office, transportation and storage areas.

1. Set up a soundproof room

Before installing the ball press, there are conditions that can be used to build a soundproof structure in advance to isolate the noise of the ball press inside the plant. At the same time, the soundproof wall can also absorb a certain amount of noise and reduce the volume.

2. Add sound insulation wall

If the plant and ball press equipment have been installed, asbestos and other sound insulation materials can be added to the walls of the plant to ensure that less sound sources radiate outside the working area.

Through the above points, it can be seen that the noise reduction of the briquetting machine must be targeted, and the noise of the machine cannot be completely eliminated, and it can only be reduced as much as possible. There is also need to ensure the tightness of the connections between the machines, and pay attention to proper maintenance. Zhongyuan Mine, the manufacturer of briquetting machine, reminds you that only by taking good care of the equipment can the equipment provide better service for us.

As a mechanical equipment for powder molding, the briquetting machine requires regular maintenance and preventive maintenance like other mechanical equipment. Some people don’t understand it. We know that regular maintenance can ensure the normal use of the briquetting machine and extend the use of the equipment. Life, what does this preventive maintenance mean? Why should the briquetting machine be repaired if there is no problem? To answer this question, you need to understand what is preventive maintenance of the briquetting machine.

What is preventive maintenance of briquetting machine

High pressure briquetting machine

1. Regular preventive maintenance

There are two specific modes for the regular preventive maintenance of briquetting machine equipment. One is regular preventive maintenance, which is the shutdown and maintenance scheduled according to the equipment wear cycle plan of the briquetting machine; the second is condition maintenance, which is to monitor the state of the briquetting machine equipment and find that For hidden troubles or potential failures, timely maintenance should be arranged to eliminate the failures in the bud.

2. Opportunity preventive maintenance

Another form of preventive maintenance of briquetting machine equipment is opportunistic maintenance. That is, preventive maintenance is performed during the off-season, holidays, weekends, or the opportunity of upstream and downstream downtime for maintenance. The “opportunity” of opportunistic maintenance can be to appropriately extend the maintenance period or to appropriately shorten the maintenance period. After demonstration, this extension or shortening will not cause major damage to the briquetting machine equipment.

No matter what preventive maintenance method is adopted, it is the treatment before the equipment failure of the briquetting machine is shut down, and the purpose is to avoid the occurrence of the failure.

Where is the preventive maintenance of the briquetting machine?

Ball press

1. Unplanned shutdown of briquetting machine equipment can be reduced and avoided

Most of today’s enterprises organize production according to orders, and customers have very strict requirements for delivery time. In lean production enterprises, punctuality and zero inventory have become typical characteristics. Once a production process is affected by the shutdown of the briquetting machine equipment, the order will be affected, which will greatly harm the efficiency and reputation of the company. Through preventive maintenance, it is of great significance to avoid a large number of unplanned downtime and ensure timely delivery.

2. It can reduce the chain damage of the briquetting machine equipment and extend the life of the equipment

The damage of the briquetting machine often starts from a part or a part, and this part or part affects other parts or parts, and it is transmitted step by step, causing big problems. This is the domino phenomenon of the system. Preventive maintenance can reduce or avoid minor damages, or eliminate small hidden dangers in time to prevent the impact from expanding and leading to more serious failures and damages.

3. It can reduce maintenance costs

Improper “preventive maintenance” will not only reduce costs, but also increase costs, which we call maintenance redundancy or over-maintenance. What we mean here is that proper preventive maintenance can reduce maintenance costs. Generally speaking, the efficiency of planned work is 3 to 4 times that of unplanned work.
Preventive maintenance because of its planned nature, you can study the repair plan in advance, prepare drawings, tools, spreaders and other auxiliary facilities materials, and prepare spare parts.

Once disassembled and repaired, the repair work can be completed efficiently. On the contrary, if it is after the maintenance, people diagnose the cause in the rush of a sudden shutdown, and then look for tools, spare parts, and materials. The real maintenance takes half a day, and the preliminary preparation may be one and a half to two days, and the time efficiency is significantly reduced. , The maintenance cost will naturally increase, coupled with the chain damage that may be caused by the subsequent maintenance, the replacement loss will also increase, and the maintenance cost will be even greater.

4. Can reduce the risk of safety accidents

Preventive maintenance can eliminate local, minor or initial defects of the briquetting machine equipment, which can individually reduce the risk of safety accidents.

5. Can avoid and reduce batch quality defects or scrap

Many equipment will cause a large number of quality defects or scraps in the process of failure.

6. It can make the work more proactive, more planned and predictable

Opportunistic maintenance in preventive maintenance can make the factory’s production plan, work schedule and resource allocation more reasonable, more planned, and more proactive. Some factories implement night-shift inspections, weekend inspections, and month-end inspections that take advantage of the opportunity to perform maintenance during the gap between the completion of production tasks.

7. Conducive to energy saving and consumption reduction of equipment

The improper operation of briquetting machine equipment tends to increase friction and energy consumption. Preventive maintenance can ensure the smooth and stable operation of equipment and facilities, can effectively reduce energy consumption, and maintain the energy-saving effect of equipment.

It can be seen that the maintenance of the briquetting machine is an equipment protection measure that must be carried out at ordinary times, and the preventive maintenance of the briquetting machine can more ensure that the mechanical equipment does not have safety problems and emergencies, and it will not take up too much time. , Which not only guarantees safe and smooth production, but also guarantees the work efficiency of the enterprise, achieving two goals with one stone.

As a large-scale crushing equipment, the high-pressure roller mill is usually installed on-site after the components are assembled in the workshop. The roller, as the main crushing component of the high-pressure roller mill, has strict requirements on assembly and installation. , The following is for everyone to organize the assembly of the high-pressure roller mill roller and the installation steps of the roller sleeve for your reference.

Assembling the rollers of the high-pressure roller mill

The assembly and installation of the rollers of the high-pressure roller mill are mainly divided into two stages. The first is to install the roller sleeve on the roller core in the workshop. Usually, the burner is hot-mounted. After the roller sleeve is hot-assembled, it is installed after natural cooling. Bearings; the second stage is the overall transportation of the rollers and the installation of the rollers on the equipment.

High-Pressure Grinding Rolls

1. Roller sleeve installation steps

(1) Measure the inner diameter of the roller sleeve and the outer diameter of the roller core before assembling. The inner diameter of the roller sleeve is checked with an inner diameter micrometer. The graduation value is 0.002mm. The standard outer diameter micrometer suitable for this roller core is 1000mm~ 1500mm, the graduation value is 0.01mm, the graduation value is too large, the equipment comes with a special measuring tool for the roller core, the measurement is divided into three parts, each part is divided into A, B, and C. Take the average of the measured data, and the result of the measurement is that the inner diameter of the roller sleeve is less than the outer diameter of the roller core by 0.2mm~0.5mm as qualified. After qualified, proceed to the next step.

(2) Use kerosene to clean the anti-rust oil on the roll core. The roll core should be free of burrs. Then stand the roll core on the erected support, adjust the verticality of the roll core with a level, and wipe a small amount of lubricating oil.

(3) After the adjustment of the roller core is completed, the roller sleeve is assembled. Before hoisting, wipe and heat the interior with acetone, and lift 10cm away. Adjust the level of the roller sleeve with a spirit level. After the adjustment is qualified, quickly set it on the roller core.

(4) The lower part of the roller sleeve is supported by four screw jacks, and the upper and lower distances between the roller sleeve and the roller core are adjusted by adjusting the four screw jacks, and the depth micrometer is used to measure. It is required that the upper and lower distance error should not be greater than 0.02mm.

(5) Use an air compressor to quickly cool the edge of the roller sleeve, and achieve positioning with the roller core through the shrinkage of the inner hole of the roller sleeve, and then cool naturally.

2. Bearing installation

(1) After the roller is cooled, put the roller down and adjust the levelness of the roll neck with a level ruler, and the levelness should not be greater than 0.2mm;

(2) Use kerosene to clean the bearing location and various parts of the bearing on the roll neck, check the roll neck installation location for burrs, and apply lubricating oil on the roll neck after the treatment is qualified;

(3) Install the dust-proof seal ring according to the position on the drawing;

(4) Use hydraulic nuts to install the bearing. There are steel marks on each part of the bearing. Check the marks carefully during installation to ensure that the installation direction is correct.

Transportation and installation of the rollers of the high-pressure roller mill

High-Pressure Grinding Rolls

1. The transportation of rollers

When the bearing box is installed, the roller is transported. In order to prevent the bearing on the roller from being partially stressed and damage the bearing, according to the size of the bearing seat, use the bolt hole of the bearing seat to process the special lifting beam, so that the two rollers can be The bearing seat is connected into a mixed body, so that the bearing seat is subjected to vertical force.

2. The overall installation of the roller

Before the rollers are transported to the site, open the support legs of the high-pressure roller mill frame. There are bolts under the support legs. Use a frame level meter to adjust the levelness of the support legs through the bolts. The level deviation should not be greater than 0.02mm. After the adjustment is completed, Apply grease to the slide rails of the legs and the slide rails of the frame, hoist the rollers to the legs of the frame, remove the lifting beams, move the rollers, and complete the installation.

The above is the assembly and installation of the high-pressure roller mill rollers organized by the editor of Zhongyuan for everyone. I hope it can be helpful to everyone. While ensuring low energy consumption, the high-pressure roller mill produced by Zhongyuan is equipped with a sealed roller cover to strictly control the spread of dust.

Compound crusher is abbreviated as compound crusher. It is also called vertical crusher and vertical impact crusher because of its vertical shaft-type up and down placement structure design. It is one of the general equipment in sand making production line and crushing production line. The composite crusher technology combines the technical advantages of similar crushers at home and abroad, and aims to save energy. The main technical parameters are designed and optimized to become a new type of fine crushing and coarse grinding products.

The compound crusher is widely used in the crushing of various ore, cement, gypsum, limestone, dolomite, quartz stone, coal gangue, refractory materials, bauxite clinker, emery, glass raw materials and other high-hard and special hard materials. It is widely used in the crushing of machine-made sand and various metallurgical slags. Compared with other types of crushers, it has higher profitability. It is currently the best model to replace cone crushers, counter-roll crushers and ball mills in the world.

Compound crusher picture

Compound Crusher

Performance characteristics

a. The hammer and rotor of the compound crushing are rigidly connected. The inertia of the whole rotor is used to impact the material, which can obtain greater speed and kinetic energy, making it easier to crush and lower energy consumption.

b. The structure of the crushing cavity is large, so that the material has a certain movement space in it. The material is impacted and can be fully crushed after repeated blows.

c. High crushing efficiency, low energy consumption, and high qualified rate of sand formation.

d. The crushing ratio is large, which can reach about 15-20, which is beneficial to reduce the number of crushing sections, simplify the process flow, save investment and reduce production costs.

e. The structure is simple, easy to produce, and easy to operate and maintain.

f. The composite crusher adopts a new type of rotor design structure, which effectively enhances the working performance of the crusher.

g. New hammer head structure design, abandoning the traditional integral structure design, adopting combined structure design, only need to replace the severely worn parts, greatly improving the service life of the hammer head, effectively reducing the production cost and the replacement frequency of equipment wearing parts.

h. The counterattack plate of the material adopts a ribbed structure, because the sharp corners of the ribbed parts have high casting quality and hardness after heat treatment, and have strong wear resistance. With the gradual increase of the wear resistance surface, the wear size gradually slows down, and the counterattack The plate material is made of wear-resistant alloy steel, which is conducive to the extension of the life of the impact plate. The installation method of the impact plate is to push in the hinge from the side, and then tighten it by the fastening nut.

Introduction to the structural design parameters of important parts

Hammer

1. According to practical experience, the allowable speed loss after the hammer hits the material varies with the size of the crusher. Generally, the allowable speed loss is 40-60%.

2. The hammers are arranged with six hammers at 60° intervals between the two partitions. The arrangement of the hammers in this way effectively utilizes the “space strike” ability of the hammers in the crushing cavity space, which can significantly improve the crushing efficiency and reduce Energy consumption.

3. The hammer head made of high chromium cast iron has a wear resistance several times higher than that of the high manganese steel hammer head.

4. The combined hammerhead design is used instead of the overall design. When a single hammerhead is severely worn, it is not necessary to replace all of it. You only need to replace the worn one, which can greatly reduce production costs and extend the life of the hammer.

Oil injection pipe

Lubricating oil is used for sliding bearings, and oil injection pipe must be used. The oil injection pipe can be a steel pipe with threads at both ends, one end is fixed on the machine cover, and one end is fixed on the machine base with a nut.

Sealing device

This machine adopts a felt ring type seal, using the rectangular cross-section felt ring embedded in the trapezoidal groove to press against the shaft to obtain the sealing effect of preventing the leakage of lubricating oil and the intrusion of foreign impurities and dust into the bearing chamber.

Guide plate inclination angle

In order to require a certain vertical falling speed for the feed, the inclination angle of the inlet guide plate should not be less than β=60°.

Protective door

In the process of material crushing, it is inevitable that a large piece of material that is difficult to crush will fall between the counterattack plate and the rotor, which will easily cause material blockage. In order to facilitate the clear blocking of materials and ensure the normal operation of the machine, a protective door is opened.

working principle

The movement state of the ground material in the compound crusher is divided into two parts, one is rotating in the cylinder, and the other is the state of throwing down after being brought to a certain height, that is, the state of throwing down. The main form of crushing in the former is grinding, and the main form of crushing in the latter is impact. The materials in the cavity are fully broken with the comprehensive action of grinding and impact.

The material enters the crushing cavity from the feed inlet, and is impacted, sheared, cleaved, and broken by the hammer, so that the particle size of the material is reduced. Self-impact crushing further reduces and balances the particle size of the material, so as to achieve the purpose of fine and uniform crushing of the material.

Compound crusher video

Price analysis

The price of the compound crusher is not expensive, mainly based on the model required by the user. The equipment has a wide range of applications, the equipment price is relatively affordable, and the cost is low. The market price ranges from tens of thousands to hundreds of thousands. The specific price Please click “contact” to get in touch with us.

Compound crusher manufacturer

As a large-scale composite crusher manufacturer, Zhongyuan Mine produces a composite crusher with reasonable structure design. The parts and accessories are made of high-quality materials and are built through various reasonable processing procedures. The quality of the equipment is relatively hard, with a large crushing ratio and energy consumption. Small size, stable operation, simple structure, convenient operation and maintenance, long service life, low equipment cost, etc., which can help users create higher economic benefits. It is very suitable for the processing and production of large, medium and small stones. Zhongyuan has perfect pre-sales After-sales and after-sales service can ensure the smooth production of users. Users are welcome to come and buy.

For more detailed information about the application scope and performance introduction of the compound crusher, please click to visit:http://www.dreamonfoundation.com/blog/composite-crusher-meaning/

Jaw crushers are widely used in mining and smelting, building materials, highways, railways, water conservancy and chemical industries. Due to the high hardness of the crushed materials, strong vibrations will occur during work. Therefore, the early installation work is very important. Today Zhongyuan editor will introduce the installation points and precautions of the 6 major parts of the jaw crusher.

1. Installation points of jaw crusher

When assembling the jaw crusher, the frame of the crusher needs to be installed on the foundation first, and then the other components are installed in order.

Jaw crusher

①The installation points of the jaw crusher frame

When installing the crusher frame, pad between the frame and the concrete to reduce vibration, such as hardwood, rubber, etc. The horizontal and vertical horizontality of the frame installed on the foundation or on the wooden base must meet the equipment Installation requirements. When installing the rack, the horizontal and vertical horizontality of its placement on the foundation should be less than 0.2mm.

②The main points of assembly of jaw crusher eccentric shaft and bearing

a. Before assembling the shaft and the bearing, the sliding bearing needs to be researched and assembled, and then placed in the sliding bearing seat, and the levelness and coaxiality of its placement are tested by a level gauge. If the measurement results meet the requirements, Then install the eccentric shaft on the bearing, and check the fit between the shaft and the bearing by applying red lead powder on the journal.

b. Because the bearing needs to use the principle of thermal expansion and contraction during the assembly process, the heating process must be strictly controlled, and the appropriate temperature should be selected for heating of bearings of different specifications and sizes. The outer diameter of the broken jaw bearing is Φ650 and the inner diameter is Φ400. It is a large bearing. It is often heated unevenly during the heating process, which causes the assembly quality to decline. Therefore, we choose to turn the bearing direction 180° to reheat the other surface to ensure uniform heating of the bearing .

c. During the assembly process, it is required to strike the bearing diagonally at the same time to ensure that the bearing enters the eccentric shaft in a balanced manner. When the eccentric shaft enters the movable jaw, we require the jaw to be hit with a hammer, and the eccentric shaft is installed by the interaction force. Enter into the movable jaw without damaging the bearing on the eccentric shaft.

d. Use a grease injector to inject grease into the movable jaw. The grease added into the bearing is about 50% of the space volume. Replace it every 3-6 months. Clean the roller with clean gasoline or kerosene when changing the oil. The raceway of the bearing makes the bearing lubricated sufficiently and evenly, and the bearing is well lubricated under the action of heavy load and high temperature, which prolongs the service life of the broken jaw bearing.

If there are too many high points on the surface of the sliding bearing, it needs to be scraped until the high points between the contact surfaces disappear. Apply a certain amount of lubricating oil between the bearing seat and the bearing to reduce shaft wear, eccentric shaft sliding and frame The contact area between them should not be less than 80%, and the gap between them should be less than 0.07mm.

③The installation points of the jaw breaker connecting rod

After the above parts are installed in place, the connecting rod can be installed. The connecting rod and the required assembly position should be carefully checked before the connecting rod is assembled. After there is no problem, the connecting rod is lifted, and the entire connecting rod is carried out with gasoline or kerosene. After cleaning, apply a layer of oil on the surface of the connecting rod to ensure that it is installed and lubricated. Then put the upper bearing, main shaft, upper bearing and connecting rod upper shell, and then lift the connecting rod, install the connecting rod bolt on the connecting rod and tighten it, for example, after adding a gasket between the upper shell of the connecting rod and the connecting rod, If the fit is not tight and cause oil leakage, the gasket should be processed or new gaskets should be reinstalled. If conditions permit, the whole can be hoisted into the frame by using a crane after assembling the connecting rod and main shaft parts externally.

④The installation points of the broken jaw plate

Loosen the tie rod spring nut, remove the spring, tie the lower part of the movable jaw with a chain or wire rope, and then pull the wire rope to bring the movable jaw close to the fixed jaw, and the toggle plate will automatically fall. After the old toggle is removed, use a wire rope to pull the new toggle into the toggle base so that the toggle and toggle base are in close contact, and then install the pull rod and spring. At this time, the toggle is supported in the toggle base before use The wire rope is pulled by the crane to make the movable jaw close to the fixed jaw, and the rear toggle plate will automatically fall off. You only need to repeat the above steps in reverse during installation.

⑤The installation points of jaw breaking jaw

Assemble the mobile jaw of jaw crusher by using the pre-assembled mobile jaw parts. The mobile jaw parts are assembled first, and the mobile jaw, the movable jaw shaft, the movable tooth plate, the toggle pad, etc. are assembled on the ground. After completion, use a crane or crane to lift the assembled parts into the frame of the crusher.
For sliding bearings, first grind and match the sliding bearings, and then put them into the housing of the frame, and measure the deviation of the inclination and coaxiality. If it is within the allowable range, apply lubricating oil on the surface of the bearing and journal, put the movable jaw in the bearing, and check the concentricity and inclination of the sliding bearing assembly at the same time. The inclination is guaranteed to be 0.2mm. The shaft degree should be less than 0.06mm to complete the assembly of the movable jaw.

⑥ The installation points of the jaw crusher plate

The jaw crusher tooth plate is a component directly used for crushing ore. Its structure is simple. However, due to frequent contact with the ore, the tooth plate is a part that wears quickly in the crusher and needs to be replaced frequently. The cross-sectional structure of the tooth plate has two kinds of smooth surface and lattice surface. Due to its large weight, it needs to be made into a structure that is easy to replace.

The tooth plate is fixed with bolts or wedges, and it is fixed on the front wall of the frame or the movable jaw, and the contact surface between the two must be straight and no warping is allowed. If there is a high point in contact, Need to be processed in time. Since the inner side of the front wall of the frame is not processed, a soft metal gasket is placed between the back of the fixed jaw tooth plate and the front wall of the frame to ensure that the two fit closely.

2. Precautions for installation of jaw crusher

Since the jaw crusher vibrates greatly during work, the machine should be installed on a concrete foundation. In order to reduce vibration, noise and the impact on nearby buildings, a hardwood pad and rubber belt should be placed between the crusher and the concrete foundation. Or other shock-absorbing materials.

The size of the discharge opening should be adjusted according to the required product granularity. When adjusting, loosen the bolt and tighten the spring. Use jacking bolts to open the adjusting seat, insert or remove gaskets of corresponding thickness, and then retract the jacking bolts, and the adjusting seat will be close to the ear seat of the frame under the weight of the movable jaw, and the gasket group will be pressed at the same time. Get together. Afterwards, adjust the spring preload to ensure that the thrust plate and the thrust plate pad are in close contact when the machine is working. However, the pre-pressure should not be too large, so that no knocking sound occurs, and finally lock the adjusting seat.