Using the plunger pump for oil pump, after 3000h, the operator needs to check the plunger pump 1-2 times daily to check whether the hydraulic pump is working properly. If it is found that the speed of the hydraulic cylinder or stuffy car, it should be a breakdown of the pump to check the edge of the impeller to check whether there is a scratching phenomenon, internal gear pump clearance is too large. For self-priming piston pump, the oil in the hydraulic tank shall not be lower than the lower limit of oil standard, to maintain a sufficient amount of hydraulic oil. The higher the cleanliness of the hydraulic oil, the longer the service life of the hydraulic pump. Plunger Pump Most important part is the bearing, if the bearing appears the clearance, can not guarantee the hydraulic pump three pairs of friction pair of normal clearance, simultaneously also can destroy each rub pair's hydrostatic support oil film thickness, reduces the plunger pump bearing service life. According to the information provided by the hydraulic pump manufacturer, the average service life of the bearing is 10000h, and it needs to be replaced with a new port. The removal of the bearings, no professional testing equipment is unable to detect the clearance of bearings, can only use visual inspection, if found that the roller surface scratches or discoloration, it must be replaced. When changing the bearing, should pay attention to the original bearing of the English alphabet and model, plunger pump bearing most of the use of large load capacity bearings, purchase original manufacturers, the original specifications of the products, if the replacement of another brand, should be consulted on the bearing experienced personnel check table Exchange, the purpose is to maintain the accuracy of bearings and load capacity Plunger Pump service life length, and peacetime maintenance, hydraulic oil quantity and quality, oil cleanliness and so on. It is also an effective way to prolong the life of plunger pump to avoid the abrasion of the piston pump by the particles in the oil liquid. Replacement parts in maintenance should be used as far as possible by the original production parts, these parts are sometimes more expensive than other counterfeit parts, but the quality and stability are good, if the purchase of cheap imitation parts, in the short term seems to be a cost savings, but this brings a hidden danger, but also the use of plunger pump may cause greater harm. The distribution plate has two forms of planar distribution and spherical distribution. The friction pair of the spherical distribution flow, when the cylinder body is marked with a flow surface is shallow, through the grinding means to repair the cylinder body with a deeper groove, should first use the "surface engineering technology" means to fill the groove, and then grind, not blindly grinding, to prevent copper layer thinning or oil leakage out of the steel base. Plunger pump can also be used to save energy, Shanghai is art engineers pointed out: plunger pump in the actual production process, usually run in the case of pressure or flow to adjust the state of work. When the actual pressure is greater than the need for pressure, it is through the overflow valve to adjust, so that its working pressure to maintain stability so that the overflow valve cast out of proportion. And the motor has been running at full speed repeated action, power consumption unchanged. When using overflow to adjust pressure and flow, there is a part of the residual overflow back to the original system, thus causing the plunger pump has useless power, low efficiency, if the use of Chuang Jie energy-saving inverter, overflow valve can be closed, through the energy-saving inverter itself automatically adjust work pressure, maintain the stability of work pressure, automatic tracking equipment pressure. Realize automatic control, thus saving energy. The biggest advantage of this kind of regulation is that it can reduce the operation energy consumption of plunger pump, and the effect of electricity saving can reach more than 30%.