Pump body inlet rotation starting device

By setting guide vanes on the inner wall of the pump body inlet to form a spiral flow channel, the existing pump body inlet rotary device has solved the problems of return flow and large energy loss when transporting solid and liquid two-phase flow, and the uniform guide of the fluid and the stable operation of the pump body are achieved.

CN119755137APending Publication Date: 2025-04-04LANZHOU UNIVERSITY OF TECHNOLOGY
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Patent Information

Application Number
CN202510183213.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-19
Publication Date
2025-04-04

AI Technical Summary

Technical Problem

When the existing pump body inlet rotary device conveys solid and liquid flow, it is easy to cause problems such as reflow, large energy loss, particle accumulation and pipeline blockage, and it is difficult to process.

Method used

A pump body inlet rotary device is designed, and a spiral flow channel is formed by setting a pipe on the inner wall of the pump body inlet and setting three or more guide vanes in the circumference of the inner wall of the pipe, and forming a spiral flow path, and its spiral direction is consistent with the spiral direction of the pump body impeller.

Benefits of technology

The spiral flow path formed by the guide vane can effectively guide the solid-liquid mixed fluid, so that it obtains axial velocity and rotating kinetic energy before entering the pump body, improves the flow state, reduces impact, reduces vibration and noise, and extends the mechanical life.

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Abstract

The invention relates to a pump body inlet rotation starting device which comprises a pipeline arranged at a pump body inlet and three or more guide vanes arranged in the circumferential direction of the inner wall of the pipeline, the guide vanes extend along the axis of the pipeline, and a spiral flow channel for guiding fluid is formed between every two adjacent guide vanes. The spiral direction of the spiral flow channel is consistent with that of the pump body impeller, the guide vanes are directly arranged on the inner wall of the pipeline in the circumferential direction, and the spiral direction of the spiral flow channel is consistent with that of the pump body impeller, so that the flowing state of solid-liquid mixed fluid entering the pump body inlet is improved; by means of the structure, solid-liquid mixed fluid can enter the pump more smoothly and be discharged in an accelerated mode under the action of the impeller of the pump body, unstable factors caused by flow impact, vortexes and the like are reduced, vibration and noise generated in the operation process of the pump body can be obviously reduced, and low vibration means that abrasion of parts of the pump body is reduced, and the mechanical service life is prolonged.
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