Yuken plunger pump is an important device of hydraulic system. It has many advantages, such as high rated pressure, compact structure, high efficiency and convenient flow regulation. It is widely used in high pressure, large flow and flow adjustment occasions. In daily use, it should be timely maintained to make it play its best role.
The Yuken plunger pump supplied by the refueling pump is used. After 3000 hours, the operator should check the Yuken plunger pump 1-2 times a day to check whether the 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 oil pump should be dismantled and checked for scratches on the edge of the impeller and excessive clearance of the internal gear pump. For self-suction Yuken plunger pump, the oil in the hydraulic tank should not be lower than the lower limit of the oil mark, and enough hydraulic oil should be maintained. The higher the cleanliness of hydraulic oil, the longer the service life of hydraulic pump.
The most important component of Yuken plunger pump is the bearing. If there is clearance in the bearing, the normal clearance of three pairs of friction pairs in the hydraulic pump can not be guaranteed. At the same time, the thickness of hydrostatic supporting oil film of each friction pair will be destroyed, and the service life of the bearing of Yuken plunger pump will be reduced. According to the information provided by the hydraulic pump manufacturer, the average service life of the bearing is 10,000 hours. If the service life exceeds this value, new openings need to be replaced. Removal of bearings, there is no professional testing equipment can not detect the clearance of bearings, can only use visual inspection, if the roller surface is found to have scratches or discoloration, it must be replaced.
When replacing bearings, attention should be paid to the letters and models of the original bearings. Yuken plunger pump bearings mostly adopt large load capacity bearings. It is better to buy the original manufacturer and the original specifications of the products. If replacing another brand, we should consult the experienced personnel of the bearings to check the tables and exchange them. The purpose is to maintain the accuracy grade and load capacity of the bearings. 。
The service life of Yuken plunger pump is related to peacetime maintenance, quantity and quality of hydraulic oil, oil cleanliness, etc. It is also an effective way to prolong the service life of Yuken plunger pump to avoid the abrasion caused by particles in the oil on the friction pair of Yuken plunger pump. Replacing parts in maintenance should try to use the parts manufactured by the original factory. Sometimes these parts are more expensive than other imitation parts, but their quality and stability are better. If you buy cheap imitation parts, it seems to save money in the short term, but the hidden danger may also result in the use of Yuken plunger pump. Greater harm.
There are two forms of flow distribution plate: plane flow distribution and spherical flow distribution. The friction pair of spherical flow distribution should be repaired by grinding when the scratches on the flow distribution surface of cylinder block are relatively shallow; when the grooves on the flow distribution surface of cylinder block are deeper, the grooves should be filled by "surface engineering technology" before grinding, so as not to blindly grind, so as to prevent the copper layer from thinning or oil leaking out of the steel base.
These are the daily maintenance measures of Yuken plunger pump. Reasonable and effective maintenance is the premise to extend its service life, and also one of the means to improve the production efficiency of enterprises.