What are the daily maintenance measures for the special pump for filter press

What are the daily maintenance measures for the filter press special pump? The special pump for filter press must be maintained during use. Good maintenance can extend the service life.


The plunger pump is an important device of the hydraulic system. It has the advantages of high rated pressure, compact structure, high efficiency and convenient flow adjustment. It is widely used in high pressure, large flow and flow needs to be adjusted. In daily use, it should be properly maintained in order to make it play the best effect.

  The plunger pump supplied by the 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 hydraulic pump runs normally. If it is found that the speed of the hydraulic cylinder has dropped or the car is stuck, the charge pump should be disassembled and inspected to check whether the edge of the impeller is 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.

plunger pump for filter press

The most important component of the plunger pump is the bearing. If the bearing has a clearance, the normal clearance of the three pairs of friction pairs inside the hydraulic pump cannot be guaranteed. At the same time, the thickness of the hydrostatic support oil film of each friction pair will be destroyed and the bearing of the plunger pump will be reduced. Service life. According to the information provided by the hydraulic pump manufacturer, the average service life of the bearing is 10,000h. If it exceeds this value, it needs to be replaced.

  The disassembled bearing cannot detect the bearing clearance without professional testing equipment. Only visual inspection can be used. If the roller surface is found to have scratches or discoloration, it must be replaced.

When replacing bearings, you should pay attention to the English letters and model numbers of the original bearings. Most plunger pump bearings use large load capacity bearings. It is best to buy products from the original manufacturer and original specifications. If you change to another brand, you should consult with bearing experience The purpose of checking the table is to maintain the accuracy grade and load capacity of the bearing.

plunger pump for filter press


   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 the particles in the oil from causing wear to the friction pair of the plunger pump is also an effective way to extend the life of the plunger pump.

When replacing parts in maintenance, you should try to use original 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. But this brings hidden dangers and may cause greater harm to the use of plunger pumps.

   The valve plate has two forms: plane distribution and spherical distribution. For the friction pair of the spherical distribution surface, when the scratches on the distribution surface of the cylinder block are relatively shallow, it is repaired by grinding means; when the grooves on the distribution surface of the cylinder block are deep, the grooves should be filled by "surface engineering technology" before grinding , Do not grind blindly to prevent the copper layer from thinning or oil leakage out of the steel base.

   The above are the daily maintenance measures for the plunger pump. Reasonable and effective maintenance is the prerequisite for extending its service life and one of the means to improve the production efficiency of the enterprise.


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