Magnetic vortex pump

Abstract

The invention discloses a magnetic vortex pump which comprises a front cover, an impeller, an impeller bearing, a ceramic shaft sleeve, a pressurizing impeller, a pump body, a rotor bearing, a pump cover, a rotor, an isolating bushing and an outer magnetic part. A liquid entering a front pump cavity through the front cover is pressurized for the first time, is then rotatably pressurized by n blades of the pressurizing impeller after flowing into a back pump cavity through a through hole channel and flows out through a diffusion pipe of the pump body. After the rotating speed of the magnetic vortex pump is reduced, the lift is improved to meet an original lift demand at a high speed by increasing the quantity of the blades of the pressurizing impeller while other parts such as the impellerand the pump body are not changed in dimension, so that heat generated by the low rotating speed magnetic vortex pump is small, and the wear is reduced, and therefore, the service life of the pump isprolonged greatly.

Description

technical field [0001] The invention relates to the technical field of pump valves, in particular to a magnetic swirl pump. Background technique [0002] The fixed impeller of the magnetic pump has a fixed head. If the head needs to be increased, there are two methods: 1. Increase the diameter of the impeller; 2. Add one or more impellers. In the first method, the impeller can only be enlarged to a certain size, and the outlet of the impeller diffuses seriously and is prone to cavitation. The diameter cannot be increased any more, and the pump body becomes larger accordingly. The second method is to increase the impeller, but the structure is very complicated if it is increased to more than 3 stages. If it is a plastic-lined magnetic pump, it is necessary to consider the plastic lining and mechanically lock the impeller axially, and the structure is even more complicated. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the present invention...

AI Technical Summary

Problems solved by technology

In the first method, the impeller can only be enlarged to a certain size. After the impeller outlet diffuses seriously and cavitation is prone to occur, the diameter cannot be increased, and the pump body becomes correspondingly large.

The second method is to increase the impeller, but the structure is very complicated if it is increased to more than 3 stages. If it is a plastic-lined magnetic pump, it is necessary to consider the plastic lining and mechanically lock the impeller axially, and the structure is even more complicated.

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