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Centrifugal pump capable of reversely rotating

A technology for centrifugal pumps and pump casings, which is applied to components, pumps, and pump elements of pumping devices for elastic fluids, and can solve the problems of centrifugal pumps that cannot work, rotors that can only rotate forward, and low efficiency

Inactive Publication Date: 2012-02-01
江苏振华海科装备科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The centrifugal pump operates under normal conditions, and the rotor can only rotate forward; when the rotor is reversed, the centrifugal pump can hardly work
Even if it works, the efficiency is much lower than that of forward rotation

Method used

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  • Centrifugal pump capable of reversely rotating
  • Centrifugal pump capable of reversely rotating
  • Centrifugal pump capable of reversely rotating

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Experimental program
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Embodiment Construction

[0010] In order to make the technical means, innovative features, objectives and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with the accompanying drawings.

[0011] The centrifugal pump of the present invention adopts a three-stage pump casing. There is a pump casing arranged symmetrically at each end of the pump to balance the axial force. There is a water inlet and a water outlet on the pump casing; when the pump rotor is reversed, the water outlet becomes the water inlet, and the water inlet becomes the water outlet. The middle section uses the middle pump casing to connect the casings at both ends into one. The impeller blades are helical blades, with the smallest outlet diameter at the axial center of the impeller, and a tapered structure formed on both sides.

[0012] Structure Description

[0013] like figure 1 As shown, the centrifugal pump consists of pump casing (1), impeller ...

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PUM

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Abstract

The invention relates to a centrifugal pump capable of reversely rotating. When an impeller blade adopts a spiral blade, pump shell at two ends are symmetrically arranged, and an intermediate pump shell has a communication effect. By the structure, water can be pumped out normally when a pump rotor positively rotates and also can be pumped out when the pump rotor reversely rotates, and the efficiency of reverse rotation cannot be greatly reduced compared with the efficiency of positive rotation.

Description

technical field [0001] The invention relates to a centrifugal pump which can be used in reverse. Background technique [0002] The centrifugal pump operates under normal conditions, and the rotor can only rotate forward; when the rotor is reversed, the centrifugal pump can hardly work. Even if it works, the efficiency is much lower than that of forward rotation. In some special cases, it is required that the rotor of the pump can be reversed, and the efficiency must meet certain requirements. Contents of the invention [0003] The technical problem to be solved by the present invention is how to design the structure of the centrifugal pump to realize that the pump rotor can work normally even when the rotor is reversed, and the efficiency must meet certain requirements. [0004] In order to solve the above problems, the technical solution adopted in the present invention is: [0005] The pump casing is composed of the first-stage pump casing, the second-stage pump casin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D1/06F04D29/42F04D29/22
Inventor 戴露庄卫将郭红云肖亚东李红林
Owner 江苏振华海科装备科技股份有限公司