Magnetically-driven self-suction peripheral pump

Abstract

The invention relates to a self-suction peripheral pump, in particular to a magnetically-driven self-suction peripheral pump, the front end of a shell is fixedly connected with a pump cover, the pump cover and the shell jointly form an annular flow channel, and the rear end of the shell is fixedly connected with a motor; a pump shaft fixed in the shell through a chuck, an impeller arranged at the front end of the pump shaft in a key fit mode and located in the annular flow channel, an inner rotor fixed to the rear end of the pump shaft, an outer rotor arranged on the motor in a key fit mode and an isolation sleeve arranged between the inner rotor and the outer rotor and fixed to the shell are arranged in the shell. The shell is provided with a liquid inlet and a liquid outlet section which are communicated with the annular flow channel; the liquid outlet section comprises a gas-liquid separation chamber communicated with the annular flow channel, a reflux inlet communicated with the gas-liquid separation chamber and the annular flow channel, and a liquid outlet formed in the gas-liquid separation chamber; a liquid storage area jointly formed by the shell and the pump cover is arranged at the lower end of the impeller. Compared with the prior art, the shaft seal of the self-suction peripheral pump is converted into static seal from dynamic seal by adopting magnetic drive, and the phenomena of running, emitting, dripping, leaking and the like are effectively solved.

Description

technical field [0001] The invention relates to a self-priming vortex pump, in particular to a magnetic force-driven self-priming vortex pump. Background technique [0002] The vortex pump is mainly composed of the impeller, the pump body, the pump cover and the annular flow channel formed by them. The vortex pump impeller is different from the centrifugal pump impeller. It is a disc with radial blades on the outer wheel. The liquid enters the flow channel from the suction pipe, repeatedly makes a vortex motion in the vane and the flow channel of the pump body, obtains energy through the rotating impeller, and is transported to the discharge pipe to complete the working process of the pump. The specific speed of the vortex pump is usually between 6-50. It is a small flow, high lift pump, suitable for conveying liquids or gas-liquid mixtures with a viscosity not greater than 5°E, no solid particles, and no impurities. Its flow range is 0.18-45m 3 / h, the single-stage lift ...

AI Technical Summary

Problems solved by technology

[0003] The shaft seals of the existing self-priming vortex pumps all use dynamic seal mechanical seals or packing seals. This method will cause phenomena such as running, popping, dripping, and leaking. Therefore, the existing self-priming vortex pumps cannot or are difficult to apply to easy-to-use Inflammable, explosive, harmful, poisonous and rare precious liquid transportation needs to be improved

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