Centrifugal pump mechanical seal flushing device

Abstract

The invention discloses a centrifugal pump mechanical seal flushing device, and relates to the technical field of flushing devices.The centrifugal pump mechanical seal flushing device comprises a pump body, a rear cover is arranged at one end of the pump body, a bearing hole is formed in the middle of the rear cover, the inner wall of the bearing hole is connected with a pump shaft through a bearing, and an impeller is arranged at one end of the pump shaft; a water inlet hole is formed in the other end of the pump body, a water inlet pipe is connected to the inner wall of the water inlet hole in an inserted mode, the outer wall of the pump shaft is sleeved with a mechanical sealing movable ring, a plurality of drainage grooves distributed at equal intervals are formed in the outer surface of the mechanical sealing movable ring, the drainage grooves are communicated through circulation holes, and the circulation holes are of an arc-shaped structure. Inclined holes are formed in the bottom ends of the two drainage grooves in the two sides. The cleaning fluid can make full contact with the mechanical sealing moving ring, and the lubricating and cooling effects of the mechanical sealing moving ring are improved.

Description

technical field [0001] The invention relates to the technical field of flushing devices, in particular to a mechanical seal flushing device for centrifugal pumps. Background technique [0002] The centrifugal pump is a device that drives the rotation of the fluid by the centrifugal force generated by the impeller of the rotating pump to complete the fluid transportation. The basic structure of the centrifugal pump includes six parts, namely the impeller, the pump body, the pump shaft, the bearing, the sealing ring and the stuffing box. , The impeller is the core part of the centrifugal pump. It has high speed and high output. The blades on the impeller play a major role. The impeller must pass a static balance test before assembly. The inner and outer surfaces of the impeller should be smooth to reduce the friction loss of the water flow. The pump body is also called the pump casing. It is the main body of the water pump, which plays a supporting and fixing role and is conne...

AI Technical Summary

Problems solved by technology

[0003] During the use of centrifugal pumps, it is often necessary to use a flushing device to flush the mechanical seal in order to lubricate and cool the dynamic and static sealing surfaces of the mechanical seal. The existing flushing device has poor flushing effect and cannot make the mechanical seal well lubricated. and cooling, so there is room for improvement

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