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How to maintain the hammer crusher hammer
Jun 01, 2018

How to maintain the hammer crusher hammer?


Hammer crusher is widely used in the mining, chemical, metallurgy, building materials, electricity and other industries commonly used crushing equipment. Hammer crusher hammer is an essential part of the crusher with a long history, and it is also the main wear part on the crusher. The hammer head is good or bad, and the wear resistance has a direct impact on the hammer crusher. The efficiency and effectiveness of the work. Therefore, the choice of forging wear-resistant hammers is the unanimous choice for users in every industry. The maintenance of the crusher hammer during use is also the key to improve the efficiency of the crusher hammer. Hammer crusher high-speed rotation of the hammer and the material collision, so that the material breaks to form a broken, it has a simple structure, large crushing ratio, high production efficiency, can be used for dry and wet crushing, adapt to mine, cement, In the coal, metallurgy, building materials, highway, and flammability industries, medium hardness and brittle materials are crushed or crushed. The device can adjust the gap of the purlin according to the user's requirements and change the particle size of the material to meet the different needs of different users.


Tools / raw materials

High manganese steel

Train wheels

Barium, Nickel, Manganese

Hammer crusher hammer maintenance method:

Bearing overheated. Cause: Insufficient grease; too much grease; grease is deteriorating; bearing is damaged. Remedy: Add the appropriate amount of grease; bearing grease should be 50% of its space volume; clean the bearing; replace the grease; replace the bearing.


The material size is too large. Cause: The hammer head is worn too much; the screen strip breaks.

Remedy: Replace the hammerhead; replace the screen bar.

The elastic coupling produces a knocking sound. Reason: pin loose; elastic ring wear;

Remedy: Stop and tighten the pin nut; replace the elastic ring.


Reduced production. Cause: The gap between the screen bars was blocked; the feeding was not uniform.

Remedy: Stop, clean up the blockage in the screen strip gap; adjust the feeding mechanism.

A knocking sound is generated inside the machine. Causes: Non-broken objects enter the interior of the machine; lining plate fasteners loose, hammer strikes the lining plate; hammers or other parts break.


Remedy: Stop and clean the crushing chamber; check the fastening of the liner and the gap between the hammer and the screen; replace the broken parts.

The amount of vibration is sudden. Causes: When replacing the hammer head or due to the wear of the cone head, the static balance of the rotor is unsatisfactory; the hammer head is broken and the rotor is unbalanced; the pin shaft is bent and broken; the triangular plate or the disc is cracked; the anchor bolt umbrella.

Remedy: Remove the hammerhead and select the hammerhead according to the weight so that the total weight of the hammer on each hammer axis is equal to the total weight of the hammer on the countershaft, that is, the static equilibrium meets the requirements; replace the hammerhead; replace the pin; welding Repair or replace; tighten anchor bolts.


Precautions

Hammer crusher hammer feed condition:

1 Material particle size and hardness;

2 hammer crusher feeding method. The former relates to whether the crusher will experience the impact impulse when material accumulates and the hammer hits the material. The latter results in different material-to-rotor drop due to different feeding methods, and also affects the impact impulse when the hammer hits the material. When the hammer weight and rotor speed are fixed, the impact impulse of the hammer is proportional to the material quality and the drop, and the magnitude of the impact impulse is directly related to the degree of hammer hardening and wear resistance.

Therefore, the particle size of the large-scale hammer crusher should not be too small, and the speed of the feeding equipment should be higher. In addition. Excessive material moisture content will also have a certain impact on the life of the hammer. If the water content is too high, the materials are likely to stick together and cause material accumulation, which intensifies the wear of the hammer head.