The main system of the ultrafine crusher consists of an air compressor, an air purifier system, a supersonic airflow crusher, a classifier, a cyclone separator, etc. Small and medium-sized fluidized bed airflow ultrafine crushers usually combine supersonic airflow crushers, classifiers, and cyclone separators into one machine, which can greatly save floor space and facilitate installation, transportation, and use.

Analysis and troubleshooting of common faults in ultrafine crushers:

1. Backspraying at the feed inlet: Improper adjustment of the air door, blockage of the conveying pipeline, blockage of the sieve holes, short or poor air permeability of the powder collection bag, severe wear of the hammer blade edges, etc. can all cause back spraying at the feed inlet. When this phenomenon occurs, the cause should be identified first, and then targeted measures should be taken to eliminate it, such as adjusting the air door to remove blockages, replacing the powder collection bag to increase breathability, or replacing the hammer blade.

2. Overheating of bearings: When the bearings are poorly lubricated, damaged, or the main shaft is bent, the rotor is severely unbalanced, or the belt is too tight, the bearings will overheat. The bearings can be restored to their normal state by adding or replacing lubricating oil, replacing bearings and spindles, balancing rotors, adjusting belt tightness, and other methods.

3. Strong vibration of the crusher: The following reasons may cause strong vibration of the crusher:

① The installation and arrangement of hammer blades are incorrect;

② The weight deviation of the two corresponding hammer pieces is too large;

③ Bearing damage or spindle bending;

④ The screws connecting the feet are loose. If the arrangement of the hammer blades is incorrect, they should be rearranged according to the instructions in the manual; If the weight deviation between the two sets of hammer pieces is too large, their weights should be balanced so that the weight difference does not exceed 5 grams; If the bearing is damaged or the main shaft is bent, it should be replaced in a timely manner; If the foot connection screw is loose, it should be tightened.

4. Abnormal noise inside the crusher: If the parts inside the crusher are damaged or detached, or if hard objects such as stones or iron blocks enter the machine, abnormal noise will be produced. The machine should be stopped immediately for inspection, and damaged parts should be replaced or hard objects should be removed.

5. Low production efficiency: Insufficient motor power, improper pulley configuration, belt slippage, severe hammer wear, uneven feeding, or high moisture content in raw materials are the main reasons for low production efficiency. In the event of the above situation, targeted measures can be taken to solve it, or the motor or pulley can be replaced to increase the speed, but it should not exceed the rated working speed; Or adjust the tightness of the belt, or replace the belt, or replace the hammer. Feed evenly during operation, add small amounts quickly, and maintain continuity and uniformity; Wet raw materials should be dried before crushing and processing.