In addition to preventing dry running and overload, preventing suction air and excessive suction vacuum, the management points of vane pump shall also pay attention to:
1. if the pump rotation direction is changed, the suction and discharge direction is also changed. Vane pumps have specified rotation, and reverse rotation is not allowed. Because the rotor blade groove is inclined and the blade is chamfered, the bottom of the blade is connected with the oil discharge chamber, and the throttling groove, suction and discharge ports on the oil distribution plate are designed according to the established steering. Reversible vane pumps must be specially designed.
2. the oil distribution plate for vane pump assembly and the stator shall be correctly positioned with locating pins. The blades, rotors and oil distribution plates shall not be installed reversely. The suction area on the inner surface of the stator is most vulnerable to wear. If necessary, it can be overturned and installed to make the original suction area become the discharge area and continue to be used.
3. pay attention to the cleanliness of the working surface during disassembly and assembly, and the oil shall be well filtered during operation.
4. if the clearance of the blade in the blade groove is too large, the leakage will increase. If the clearance is too small, the blade will not expand and contract freely, which will lead to abnormal operation.
5. axial clearance of vane pump η V great impact. 1) Small pump -0.015 ~ 0.03mm2) medium pump -0.02 ~ 0.045mm6. generally, the temperature and viscosity of the oil should not exceed 55 ℃, and the viscosity should be between 17 ~ 37mm2/s. Too high viscosity makes oil absorption difficult; If the viscosity is too small, the leakage is serious. As a pump product, vane pump refers more to sliding vane pump. Almost all vane pumps refer to sliding vane pumps.
