A plunger pump supplied by a charge pump is used. After 3000 hours of use, the operator needs to check the plunger pump 1-2 times a day to check whether the operating sound of the hydraulic pump is normal. If it is found that the speed of the hydraulic cylinder drops or the car is stuffy, the charge pump should be disassembled and inspected to check whether the edges of the impeller are scratched and whether the internal gear pump clearance is too large. For self-priming plunger pumps, the oil in the hydraulic oil tank must not be lower than the lower limit of the oil standard, and a sufficient amount of hydraulic oil must be maintained. The higher the cleanliness of the hydraulic oil, the longer the service life of the hydraulic pump.
The most important part of the plunger pump is the bearing. If there is a play in the bearing, the normal clearance of the three pairs of friction pairs in the hydraulic pump cannot be guaranteed. At the same time, the thickness of the hydrostatic supporting oil film of each friction pair will be destroyed. Service life. According to the information provided by the hydraulic pump manufacturer, the average service life of the bearing is 10,000 hours, and if it exceeds this value, it needs to be replaced with a new one.
The disassembled bearing can not detect the bearing clearance without professional inspection equipment. Only visual inspection can be used. If there is a scratch or discoloration on the roller surface, it must be replaced. When replacing bearings, pay attention to the English letters and models of the original bearings. Most of the plunger pump bearings use high-load capacity bearings. Buy products from the original manufacturer and the original specifications. If you replace another brand, you should ask someone with experience in the bearings. Lookup table swap, the purpose is to maintain the accuracy grade and load capacity of the bearing.
The service life of the plunger pump is related to the usual maintenance, the quantity and quality of hydraulic oil, and the cleanliness of the oil. Avoiding particles in the oil from causing wear on the friction pairs of the plunger pump is also an effective way to extend the life of the plunger pump. Replacement parts in repair should try to use original factory parts. These parts are sometimes more expensive than other counterfeit parts, but the quality and stability are better. If you buy cheap counterfeit parts, it seems to save costs in the short term. However, this has brought hidden dangers and may cause greater harm to the use of plunger pumps.
With regard to the maintenance of plunger pumps, we must understand the hydraulic system in many aspects. Only by knowing clearly and maintaining the plunger pumps can we avoid dangerous accidents.
Post time: Dec-05-2020