The use of replenishment pump oil supply piston pump, use 3000h, the operator needs to check the piston pump 1-2 times a day, check the hydraulic pump running sound is normal. If you find that the hydraulic cylinder speed drop or boring, you should disassemble the oil pump to check whether the impeller edge is scratched phenomenon, whether the internal gear pump clearance is too large. For self-priming oil-type piston pumps, the oil in the hydraulic oil tank should not be lower than the lower limit of the oil mark, and a sufficient amount of hydraulic oil should 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 piston pump is the bearing, if the bearing has a clearance, it can not guarantee the normal clearance of the three pairs of friction vice inside the hydraulic pump, and it will also destroy the thickness of the hydrostatic support oil film of each friction vice, reducing the service life of the piston pump bearing. According to the information provided by the hydraulic pump manufacturer, the average service life of the bearings for 10000h, more than this value will need to replace the new mouth. Disassembled bearings, no professional testing instruments are unable to detect the bearing clearance, can only be used visually, such as found on the surface of the roller with scratches or discoloration, it must be replaced.
In the replacement of bearings, should pay attention to the original bearing letters and models, piston pump bearings are mostly used in large load capacity bearings, it is best to buy the original manufacturer, the original specifications of the product, if the replacement of another brand, should be asked to teach the bearings of experienced personnel to check the table of the replacement, the purpose is to maintain the accuracy of the bearings level and load capacity.
The length of service life of the piston pump is related to the usual maintenance, the quantity and quality of hydraulic oil, and the cleanliness of the fluid. Avoiding particles in the fluid to the piston pump friction vice wear, etc., is also an effective way to extend the life of the piston pump. Replacement parts in the maintenance should try to use the original production parts, these parts are sometimes more expensive than other imitation parts, but the quality and stability to be good, if you buy cheap imitation parts, short-term seems to be the cost savings, but the resulting out of the hidden dangers, but also the use of the piston pump may cause greater harm.
There are two forms of flow distribution disk: plane flow distribution and spherical flow distribution. Spherical flow of the friction vice, in the cylinder body flow surface scratches are relatively shallow, through the grinding means of repair; cylinder body flow surface grooves deeper, should be used first "surface engineering technology" means to fill the groove, and then grinding, do not blindly grinding, in order to prevent thinning of the copper layer or leakage of oil out of the steel base.
Above is the piston pump daily maintenance measures, reasonable and effective maintenance is to extend its service life of the premise, but also one of the means to improve the productivity of enterprises.
