Noise And Operation Method Of High-pressure Pump

Jun 29, 2025

(1) For self-priming high-pressure pumps, they should be placed in well ventilated areas as much as possible to facilitate rapid heat dissipation and reduce motor temperature.

Otherwise, prolonged operation can easily burn out the motor.

If a farmer uses a self-priming high-pressure pump and fails to remove the plastic film covering the motor, the motor overheats and burns out the coil. In addition, before starting, it is necessary to check the water storage in the high-pressure pump body, otherwise it will not only affect the self-priming performance, but also easily burn the shaft seal components. Under normal circumstances, the high-pressure pump should release water within 3-5 minutes after starting, otherwise it should be stopped immediately for inspection.
(2) High pressure pump maintenance
Once the high-pressure pump malfunctions, do not disassemble it by yourself. Because when disassembling by oneself, one does not know where the fault lies and blindly disassembles it; Secondly, the lack of specialized tools often damages the originally intact components. A good approach is to go to experienced and large-scale repair points for maintenance, and promptly replace over aged parts and certain vulnerable components. Under normal circumstances, high-pressure pumps should be repaired every six months to prevent working with problems.

(3) Non use period storage
During the non use period, the high-pressure pump should be promptly lifted away from the water source and the accumulated water in the high-pressure pump should be drained, especially in the cold winter. Then place it in a dry place. Conditional users can also apply butter to the key parts of the high-pressure pump and add lubricating oil to the bearings to prevent rusting of the components.

In addition, the non use period of high-pressure pumps is not necessarily the longer the better. If not used for a long time, not only are components prone to rusting, but the service life of the high-pressure pump will also be reduced.
(4) Determine the number and standby rate of high-pressure pumps:
For a normally operating high-pressure pump, only one is generally used because a large high-pressure pump is equivalent to two small high-pressure pumps working in parallel (referring to the same head and flow rate), and the efficiency of the large high-pressure pump is higher than that of the small high-pressure pump.

Therefore, from an energy-saving perspective, it is better to choose one large high-pressure pump instead of two small high-pressure pumps. However, in the following situations, parallel cooperation of two high-pressure pumps can be considered:
The flow rate is very high, and a high-pressure pump cannot reach this flow rate.
When using a high-pressure pump, the high-pressure pump gear often produces noise. How to solve the problem of high-pressure pump gear noise?

There are several possible aspects of high-pressure pump gear noise:
(1) The impact of the rotor on the cylinder body, the residual volume of the gear high-pressure pump, and the sound of pressure oil in the exhaust dead gap;
(2) Impact of exhaust valve disc on valve seat and supporting components;
(3) Echo and bubble burst sound inside the box;
(4) Bearing noise;
(5) Noise caused by a large amount of gas and oil impacting the oil baffle;
(6) Others. Such as noise caused by transmission, fan noise of air-cooled gear high-pressure pump, etc.
(7) Motor noise is a crucial factor.