Mechanical knowledge: plunger pump maintenance road

 

Plunger pump is an important device of hydraulic system, with high rated pressure, compact structure, high efficiency and convenient flow regulation, etc., is widely used in high pressure, large flow and flow need to adjust the occasion. In daily use, it should be timely maintenance, in order to maximize its effectiveness.

 

 

 

The most important part of the plunger pump is the bearing, if the bearing clearance, it can not guarantee the normal clearance of three pairs of friction pairs inside the hydraulic pump, but also destroy the static hydraulic support oil film thickness of the friction pair, reduce the service life of the plunger pump bearing. According to the data provided by the hydraulic pump manufacturer, the average service life of the bearing is 10000h, and if the value exceeds this, a new port needs to be replaced. Disassembled bearing, there is no professional testing instrument is not able to detect the bearing clearance, can only use visual inspection, such as found on the surface of the roller scratches or discoloration, must be replaced.

 

 

 

In the change of bearing, should pay attention to the original bearing letter and model, most of the plunger pump bearing use large load capacity bearing, it is best to buy the original manufacturer, the original specifications of the product, if the change of another brand, should consult experienced personnel on the bearing table to exchange, in order to maintain the accuracy level and load capacity of the bearing.

 

 

 

The length of the life of the plunger pump, and usual maintenance, the quantity and quality of hydraulic oil, oil cleanliness, etc. It is also an effective way to prolong the life of the plunger pump to avoid the abrasion caused by the particles in the oil on the piston pump. In maintenance replacement parts should try to use the original factory production parts, these parts are sometimes price is more expensive than other fake parts, but the quality and stability is better, if the purchase price cheap imitation parts, saving the cost seems to be in the short term, but it brings hidden trouble, may also use of plunger pump cause even more damage.

 

After using the plunger pump supplied by the replenishment pump for 3000h, the operator shall check the plunger pump 1-2 times a day to check whether the running sound of the hydraulic pump is normal. If it is found that the speed of the hydraulic cylinder decreased or boring car, it should be on the fuel pump disintegration inspection, check whether the impeller edge is scratched, whether the clearance of the internal gear pump is too large. For self-priming plunger pump, the oil in the hydraulic tank should not be lower than the lower limit of the oil standard, to maintain a sufficient amount of hydraulic oil. The cleaner the hydraulic oil, the longer the service life of the hydraulic pump.

 

 

 

The distribution plate has two forms: plane distribution and spherical distribution. The friction pair with spherical flow distribution, when the scratches on the flow distribution surface of the cylinder body are relatively shallow, can be repaired by means of grinding. When groove of face of cylinder body allocation flow is deeper, answer to use first "surface project technology" method fills after level groove, undertake grind again, cannot be ground blindly, in case copper layer becomes thin or leak gives steel base.

 

 

 

Above is the plunger pump daily maintenance measures, reasonable and effective maintenance is the premise of extending its service life, but also improve the production efficiency of one of the means.

The above:The piston pump manufacturer describes the working stage of the plunger pump