Sand and gravel aggregate is the most used and indispensable material for infrastructure construction such as buildings, roads, bridges, water conservancy, hydropower, etc. It is related to the survival of human beings and the development of society. As the primary crushing equipment for producing sand and gravel, jaw crusher also plays a vital role.
Bellian Machine Jaw Crusher Production Site Picture
Jaw crushers, known as "Pioneers of Crushed Stone", are often used for primary crushing operations. It crushes the mined large pieces of ore into smaller particle sizes, with large crushing force, reliable operation, convenient operation and maintenance, and is the main equipment for mine sand and gravel crushing.
Today, Bellian Group will take you to learn about the installation, use and maintenance of the jaw crusher, so as to help you make better use of it.
1. Installation method
The installation of jaw crusher needs attention. We mainly elaborate from three points: frame, eccentric shaft bearing and toggle plate.
1. Rack installation
When installing the crusher frame, something that can absorb vibration should be placed between the frame and the concrete, such as hardwood, rubber, etc. The installation of the rack on the foundation or on the wooden seat needs to meet the installation requirements of the equipment, and the horizontal and vertical horizontality of the rack placed on the foundation should be less than 0.2mm, so as to ensure that the subsequent installation error does not exceed the installation requirements of the equipment.
2. Installation of eccentric shaft and bearing
Before assembling the shaft and bearing, the sliding bearing needs to be ground and then put into the sliding bearing seat, and the levelness and coaxiality of its placement are checked by using a spirit level.
Jaw crusher eccentric shaft and bearing
If the measurement results meet the requirements, install the eccentric shaft on the bearing, and check the fit between the shaft and the bearing by smearing red dan powder on the journal; if there are too many high points on the surface of the sliding bearing, further scraping and grinding are required. , until the high point between the contact surfaces disappears.
Finally, apply a certain amount of lubricating oil between the bearing seat and the bearing to reduce the wear of the shaft. The contact area between the sliding of the eccentric shaft and the frame should not be less than 80%, and the gap between them should be less than 0.07mm.
3. Installation of toggle plate
Because the toggle plate of the crusher between the toggle plate and the lining plate it supports can be assembled and disassembled for a long time: loosen the spring nut of the pull rod, remove the spring, and then use a chain or wire rope to tie it to the lower part of the movable jaw, and then use the driving car to pull the wire rope. , so that the movable jaw is close to the fixed jaw, and the rear toggle plate will automatically fall off. When installing, just repeat the above steps in reverse.
Bellian Group Jaw Crusher
2. Use and maintenance
As a "tiger's mouth" that takes all of the hard and soft, the correct operation and maintenance are important factors to ensure the continuous and normal operation of the jaw crusher. Pay particular attention to the following aspects:
1. Precautions for use
The equipment must be thoroughly inspected before start-up. Check the wear of the crushing tooth plate; adjust the size of the ore discharge port; check whether there is ore in the crushing cavity, if there is a large piece of ore, it must be taken out; Check whether the tension of the pull rod spring is appropriate, whether the oil storage tank is full, whether the electrical equipment and signal system are normal, etc.
During the operation, it is necessary to keep the ore feeding evenly, avoid side feeding or full feeding, so as to avoid unilateral overload or overload. The ore should not be crowded into the crushing cavity, and the maximum size of the feeding block should not be greater than 0.85 times the width of the feeding opening. At the same time, strictly prevent non-broken objects from entering the jaw crusher when feeding ore.
Jaw crusher evenly feeding
When stopping, stop according to the production process sequence. First stop the ore feeding, and stop the jaw crusher and belt conveyor after all the ore in the crushing cavity is discharged. When the crusher stops stably, the work of the lubrication and cooling system can be stopped. In winter, the circulating cooling water in the bearing should be released to prevent the bearing from being frozen and cracked. After the machine is shut down, it is necessary to clean up and inspect all parts of the machine.
2. Maintenance
①Lubrication
In the production operation of jaw crusher, attention should be paid to the lubrication of the equipment, just like people need face cream and hand cream, keep nourishing and lubricating to show a good state. Generally, the grease added to the bearing seat of the jaw crusher is about 50% of its space volume, and is replaced every 3-6 months. An appropriate amount of grease should be injected between the bracket and the bracket seat.
② Dust removal
A large amount of dust will be generated in the production process of jaw crusher, which will cause greater pollution. With the tightening of environmental protection policies in recent years, dust removal is an indispensable link. We can do it for different situations.
Bellian Group Jaw Crusher Work Site
For the high-pressure wind generated by the high-speed rotation of the crusher, we can do our best to seal the chute behind the crusher and the belt conveyor; for the high-pressure wind that cannot be blocked, we can use the method of dredging to reduce the pressure wind.
For the dust of the dust collector absorber, the return port is displaced, the discharge port inside the chute is moved to the outside, and then the pulverized coal is collected into the material chute with cloth bags, and then cleaned manually. At this time, the air flow forms a closed-circuit circulation, which reduces the coal dust inhaled by the dust collector.
3. Faults and Solutions
In addition to the use and maintenance, in the face of some common failures of jaw crushers, we should also have ways to deal with them. These jaw crushing faults and methods are recommended for collection.
Finally, for the jaw crusher working in the crushing line, only by mastering the correct installation, use and maintenance and problem solving methods, can it produce more sand and gravel aggregates, thereby creating good economic benefits. Bellian's CJ jaw crusher and HD German jaw crusher will be your good choices because of their advanced technology and excellent performance.
