Water pump adjustable inner circulation flushing system

Abstract

The invention discloses a water pump adjusting inner circulation flushing system which comprises a pump pressure water chamber high-pressure cavity, a sealing cavity and a sealing flushing groove connecting the pump pressure water chamber high-pressure cavity and the sealing cavity, wherein the pump pressure water chamber high-pressure cavity and the sealing cavity are formed in a pump shell. An adjusting device for controlling the aperture of the overflowing section of the sealing flushing groove is arranged on the pump shell. With the adjusting device, the water pump adjusting inner circulation flushing system can freely control flushing liquid in the sealing cavity, effectively control the flow of the flushing liquid in inner circulation of the water pump, therefore, leakage of the liquid in the sealing cavity can be reduced, the breakdowns of damage of sealing parts and the like are prevented, raised cost brought by using externally-connected flushing pipes can be reduced, and the requirements for reducing cost and improving flushing performance are met.

Description

technical field [0001] The invention belongs to water pumps, in particular to a water pump adjustable internal circulation flushing system. Background technique [0002] When the water pump is running, the sealing cavity will generate a lot of heat, and its cooling is carried out through the circulating flushing system in the water pump. In the internal circulation flushing system of the water pump, the high-pressure liquid in the pressurized water chamber flows into the sealing chamber through the flushing tank on the pump cover, takes away the friction heat and stirring heat of the seal, cools the seal, and then flows into the suction chamber of the pump for circulation. However, due to the different pressures of the pressure water chamber under different working conditions of the same pump, the flushing liquid cannot be effectively adjusted, which often causes the liquid flow into the sealing chamber to be too large, and the flushing liquid cannot be returned to the sucti...

AI Technical Summary

Problems solved by technology

However, due to the different pressures of the pressure water chamber under different working conditions of the same pump, the flushing liquid cannot be effectively adjusted, which often causes the liquid flow into the sealing chamber to be too large, and the flushing liquid cannot be returned to the suction chamber for circulation in time, and is stored in the sealing chamber. In the middle, the liquid leaks out from the sealing cavity; even the damage to the seal due to the excessive flow of the flushing liquid, affecting the sealing performance of the seal and other faults

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