Gas-liquid separation device for enhancing self-absorption of self-absorption type multistage centrifugal pump

Abstract

The invention discloses a gas-liquid separation device for enhancing self-absorption of a self-absorption type multistage centrifugal pump. The gas-liquid separation device is arranged inside a self-absorption centrifugal pump and mainly comprises two parts, namely an annular bracket and an annular spiral channel which is arranged close to the annular bracket, and the surface of the spiral channelis uniformly coated with a hydrophobic material to form the hydrophobic surface annular spiral pipe channel supported by the annular bracket. The gas-liquid separation device is installed between a cavity of a pump shell and the pump shell, an inner ring and an outer ring of the device are tightly attached to the cavity and the pump shell respectively, fan-shaped openings are formed in the bottomand the top of the gas-liquid separation device, the opening at the top is an exhaust port, and the opening at the bottom is a water return port. The gas-liquid separation device is installed in an area near a pump outlet, the exhaust port of the gas-liquid separation device is directly opposite to the pump outlet, and the water return port is located in the bottom of the pump. The annular gas-liquid separation device is simple in structure, convenient to install, low in machining difficulty, light in mass, easy in raw material obtaining and wide in application prospect.

Description

technical field [0001] The invention belongs to the technical field of fluid machinery, and relates to a gas-liquid separation device, in particular to a gas-liquid separation device for accelerating self-priming multistage centrifugal pumps. Background technique [0002] The pump is a widely used hydraulic machine, and it is inseparable from the assistance of the pump in both engineering and life. Centrifugal pump is a kind of fluid machinery that relies on the centrifugal force generated by the rotation of the impeller to transmit liquid. It is widely used in urban sewage, farmland irrigation, oil transportation, marine ships and chemical industries. Compared with jet pumps, centrifugal pumps have obvious advantages in terms of simple mechanical structure and rich application scenarios. The multi-stage centrifugal pump refers to two or more single-stage centrifugal impellers connected in series on the fluid structure to achieve head superposition, which meets the needs of...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a gas-liquid separation device that enhances the gas-liquid separation effect and accelerates self-priming for the current self-priming multi-stage centrifugal pump with poor gas-liquid separation effect, poor self-priming stability and slow self-priming speed.

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