Proper use of feed crusher
Buy a good feed crusher, if not used correctly, it will not only shorten the service life of the feed crusher, but also affect the work efficiency, resulting in half the effort.
1, the long-term operation of the crusher should be fixed on the cement basis. If the working place is often changed, the crusher and the motor should be installed on the frame made of Angle iron, and the shockresistant device is installed. If the crusher diesel is used as the power, the power of the two should be matched, that is, the diesel power is slightly greater than the power of the crusher, and the belt pulley groove of the two is consistent, and the outer end face of the belt pulley is on the same plane.
2, after the installation of the crusher to check the fastening of the fasteners, if loose must be tightened.
3, to check whether the tightness of the belt is appropriate, the motor shaft and the crusher shaft are parallel.
4, before the shredder starts, first turn the rotor by hand, check whether the claw, hammer and rotor operation is flexible and reliable, there is no collision in the shell, whether the rotation of the rotor is consistent with the direction indicated by the arrow on the machine, and whether the motor and the powder machine are well lubricated.
5, do not casually replace the pulley, in case the speed is too high to cause the explosion of the crushing chamber, or the speed is too low to affect the work efficiency.
6. After the crushing table is started, idling for 2-3 minutes, and then feeding after no abnormal phenomenon.
7, the work should always pay attention to the operation of the crusher, the feed should be uniform, to prevent blocking the stuffy car, do not overload operation for a long time. If there is vibration, noise, bearing and body temperature is too high, spraying material and other phenomena, should be stopped immediately, troubleshooting before continuing to work.
8, clean up the iron removal device in time to avoid copper, iron, and other things into the crushing chamber caused by accidents.
In addition to the correct use of the feed mill, the necessary daily maintenance and maintenance of the feed mill should also be carried out to prevent the occurrence of the mill failure and extend its service life.
1, screen repair and replacement Screen is made of thin steel or iron punching. When the screen is worn or broken down by foreign matter, if the damage area is not large, it can be repaired by riveting or tin welding; If large area damage, should be replaced with a new screen. When installing the screen, the side of the screen hole with burrs should face in, the light side should face out, and the screen sheet and screen frame should be tightly fitted. When the ring screen is installed, the stubble of the lap inner layer should follow the rotation direction to prevent the material from getting stuck at the lap.
2, bearing lubrication and replacement of the crusher after every 300 hours of work, the bearing should be cleaned.
If the bearing is lubricated by oil, it is appropriate to fill 1/3 of the bearing seat gap with new oil, not more than 1/2, and only need to tighten the normally covered oil cup lid a little before operation. When the crusher bearing is seriously worn or damaged, it should be replaced in time, and pay attention to strengthen lubrication; The use of tapered roller bearings, should pay attention to check the bearing axial spacing, so that it is maintained at 0.2-0.4 mm, if there is discomfort, can be adjusted by increasing or decreasing the paper pad at the bearing cover.
3. Replacement of claw and hammer. Among the crushing parts, the crushing claw and hammer are the wearing parts in the feed crusher, and also the main parts that affect the crushing quality and productivity, and the crushing claw and hammer should be replaced in time after wear. When replacing the claw, the disc should be pulled out first. Before pulling out, first open the round nut lock piece on the back of the disk, use a hook wrench to unscrew the round nut, and then use a special pull to pull out the disk. In order to ensure the balanced operation of the rotor, the teeth should be replaced in a complete set, and the static balance test should be done after the replacement to make the crusher work stably. When assembling the jaw, be sure to tighten the nut, and be careful not to miss the spring washer. When changing the teeth, qualified parts should be selected, and the weight difference of a single tooth claw should not be greater than 1.0.
The hammer of the hammer mill is symmetrical, and when the sharp Angle of the hammer is blunted, the reverse Angle can be adjusted. When the hammer is worn to 5 mm, it should be replaced, and pay attention to the weight difference of each group of hammer shall not be greater than 5 grams; After the spindle, disc, positioning sleeve, pin and hammer are installed, static balance test should be done to maintain the balance of the rotor and prevent vibration of the unit. In addition, the pin of the fixed hammer and the round hole of the installation pin due to wear, the pin will gradually grind fine, the round hole will gradually grind large, when the diameter of the pin is smaller than the original size, the diameter of the round hole is larger than the original size, should be welded or replaced in time.
In addition to the correct use of the feed mill, the necessary daily maintenance and maintenance of the feed mill should also be carried out to prevent the occurrence of the mill failure and extend its service life.
1, screen repair and replacement Screen is made of thin steel or iron punching. When the screen is worn or broken down by foreign matter, if the damage area is not large, it can be repaired by riveting or tin welding; If large area damage, should be replaced with a new screen. When installing the screen, the side of the screen hole with burrs should face in, the light side should face out, and the screen sheet and screen frame should be tightly fitted. When the ring screen is installed, the stubble of the lap inner layer should follow the rotation direction to prevent the material from getting stuck at the lap.
2, bearing lubrication and replacement of the crusher after every 300 hours of work, the bearing should be cleaned.
If the bearing is lubricated by oil, it is appropriate to fill 1/3 of the bearing seat gap with new oil, not more than 1/2, and only need to tighten the normally covered oil cup lid a little before operation. When the crusher bearing is seriously worn or damaged, it should be replaced in time, and pay attention to strengthen lubrication; The use of tapered roller bearings, should pay attention to check the bearing axial spacing, so that it is maintained at 0.2-0.4 mm, if there is discomfort, can be adjusted by increasing or decreasing the paper pad at the bearing cover.
3. Replacement of claw and hammer. Among the crushing parts, the crushing claw and hammer are the wearing parts in the feed crusher, and also the main parts that affect the crushing quality and productivity, and the crushing claw and hammer should be replaced in time after wear. When replacing the claw, the disc should be pulled out first. Before pulling out, first open the round nut lock piece on the back of the disk, use a hook wrench to unscrew the round nut, and then use a special pull to pull out the disk. In order to ensure the balanced operation of the rotor, the teeth should be replaced in a complete set, and the static balance test should be done after the replacement to make the crusher work stably. When assembling the jaw, be sure to tighten the nut, and be careful not to miss the spring washer. When changing the teeth, qualified parts should be selected, and the weight difference of a single tooth claw should not be greater than 1.0.
The hammer of the hammer mill is symmetrical, and when the sharp Angle of the hammer is blunted, the reverse Angle can be adjusted. If one end and two corners are worn, they should be turned around. When adjusting the Angle or turning the head, all the hammer should be carried out at the same time, after the four corners of the hammer wear, they should be replaced, and pay attention to the weight difference of each group of hammer should not be large; After the spindle, disc, positioning sleeve, pin and hammer are installed, static balance test should be done to maintain the balance of the rotor and prevent vibration of the unit. In addition, the pin of the fixed hammer and the round hole of the installation pin due to wear, the pin will gradually grind fine, the round hole will gradually grind large, when the diameter of the pin is smaller than the original size, the diameter of the round hole is larger than the original size, should be welded or replaced in time.
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