Double-impeller combined self-suction mixed-flow pump

Abstract

The invention discloses a double-impeller combined self-suction mixed-flow pump, which comprises a pump body, a water inlet pipe arranged at the bottom of the pump body and a water outlet pipe arranged at the top of the pump body, a mixed-flow chamber is formed in the inner side face of the pump body, a first impeller is arranged on the inner side face of the mixed-flow chamber, a second impeller is arranged on the inner side face of the mixed-flow chamber, a water outlet is formed in the top of the mixed-flow chamber, an additional block is arranged on the top of the pump body, a confluence groove is formed in the inner side face of the additional block, a sealing plug is arranged on the outer surface of the water inlet pipe, and a rotating shell is rotationally connected to the outer surface of the water inlet pipe; the first impeller and the second impeller are matched with each other, so that the suction force in the mixed-flow chamber is increased, the entered fluid can enter the confluence groove from the two sides of the mixed-flow chamber, the flow of the mixed-flow pump is greatly increased, the water lifting amount is increased when the impellers rotate by a circle, and the water lifting efficiency of the mixed-flow pump can be effectively improved.

Description

Technical field [0001] The present invention relates to the field of mixed flow pumps, in particular a double-blade combination self-suction flow pump. Background technique [0002] The mixed flow pump is a pump between the centrifugal pump and the axial flow pump. The mixed flow pump is higher than the centrifugal pump, which is lower than the axial flow pump, typically between 300-500. Its tightening is high than the axial flow, but the flow rate is small, larger than the centrifugal pump. When the original motif is rotating, the effect of the liquid has both centrifugal force and axial thrust, and is a synthesis of centrifugal pump and axial flow pump. The existing mixed flow pump is low in water, although its water absorption speed can be faster, but can only be achieved by adjusting the speed of the motor, so the water feed speed is fast, but its actual The water water is still low, thereby causing waste of energy, which is not conducive to the practice of energy conservatio...

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Problems solved by technology

[0003] In order to solve the problems of low water-lifting efficiency of the above-mentioned mixed-flow pump and inconvenient connection of water pipes, and achieve the purpose of high water-lifting efficiency of the above-mentioned mixed-flow pump and convenient connection of water pipes, the present invention achieves the following technical solutions: a combination of double impellers A self-priming mixed-flow pump includes a pump body, a water inlet pipe arranged at the bottom of the pump body, and an outlet pipe arranged at the top of the pump body. A mixed-flow chamber is provided on the inner surface of the pump body, and a first impeller, the inner surface of the mixed flow chamber is provided with a second impeller, the top of the mixed flow chamber is provided with a drain port, the top of the pump body is provided with an additional block, and the inner surface of the additional block is provided with a confluence groove, so The outer surface of the water inlet pipe is provided with a sealing plug, the outer surface of the water inlet pipe is rotatably connected with a rotating shell, the inner surface of the rotating shell is provided with an air storage cavity, and the inner surface of the rotating shell is provided with an air guide groove, The inner surface of the rotating shell is provided with a movable chamber, the inner surface of the movable chamber is slidably connected with a fixed cone, and the outer surface of the water inlet pipe is provided with auxiliary parts

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