The main causes of noise are poor quality of hydraulic pump, inadequate accuracy, large fluctuation of pressure and flow rate, poor elimination of oil trapping, poor sealing and poor quality of bearings.During use, due to wear of parts of hydraulic pump, excessive clearance, insufficient flow and pressure fluctuation, noise of ultrafine vertical mill will also be caused.
Terms of settlement:
1) Choose a hydraulic pump or motor of good quality, and maintain it regularly. For example, if the tooth profile accuracy of gear is low, grinding gear should be done to meet the requirements of contact surface.
2) If there is oil trap in vane pump, the triangular groove of oil distribution pan should be corrected to eliminate oil trap.
3) If the axial clearance of the hydraulic pump is too large and the oil quantity is insufficient, it should be repaired so that the axial clearance is within the allowable range.
4) If the hydraulic pump is not selected correctly, it should be replaced immediately.