Sediment-proof self-cleaning butterfly valve

By designing a pressure regulating chamber and a filter chamber in the butterfly valve, the filtration flow rate is adaptively adjusted using water pressure and flow rate. The cleaning components are driven by a turbine device, which solves the problems of opening and closing difficulties and sealing caused by sediment retention, and achieves a self-cleaning and environmentally friendly energy-saving filtration effect.

WO2025245913A1PCT designated stage Publication Date: 2025-12-04SHANGHAI BIAOYI VALVE
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Patent Information

Application Number
PCT/CN2024/097476
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-05-31
Filing Date
2024-06-05
Publication Date
2025-12-04

AI Technical Summary

Technical Problem

Existing butterfly valves, when used in water transport pipelines containing silt, suffer from silt particle retention, leading to difficulty in opening and closing, wear on valve body components, and damage to sealing. Furthermore, the self-cleaning mechanism requires an external power supply, resulting in high power consumption and energy costs, and significant limitations in installation and operation.

Method used

A self-cleaning butterfly valve with anti-sludge and sand function is designed. The filter device is connected to the inlet of the butterfly valve body and includes a pressure regulating chamber and a filter chamber. The filter flow rate is adaptively adjusted by water pressure and flow rate. The turbine device drives the cleaning component to clean the filter component autonomously.

Benefits of technology

It achieves adaptive water flow rate regulation of filtration speed, autonomous cleaning of silt, ensures filtration effect, reduces energy consumption, improves environmental protection and energy-saving performance, and protects the filtration device.

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Abstract

Disclosed is a sediment-proof self-cleaning butterfly valve, comprising a butterfly valve body and a filtering apparatus. The filtering apparatus comprises a pressure adjustment chamber and a filtering chamber. The pressure adjustment chamber comprises a pressure adjustment pipe, a pressure adjustment assembly slidably connected to the pressure adjustment pipe, a rotating assembly connected to the pressure adjustment assembly, and an assistive support. The filtering chamber comprises an apparatus chamber and a second docking chamber perpendicular to the axis of the apparatus chamber. A filtering assembly and a cleaning assembly are provided in the apparatus chamber. A turbine apparatus is connected to the cleaning assembly, and the turbine apparatus drives the cleaning assembly to rotate. According to the present invention, it is possible to adapt to the pressure and flow of passing water, control the size of a water inlet of the first docking chamber, and ensure a sufficient pushing force of water when pushing the turbine apparatus to rotate. Thus, it is possible to automatically clean sediment from the filtering apparatus, ensure the filtering effect, and provide a more environment-friendly and energy-saving effect.
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Citation Information

Patent Citations

  • Combination valve body capable of being externally connected with pipeline conveniently

    CN115479150A

  • Eccentric pure metal hard sealing butterfly valve

    CN116792549A

  • Flow-limiting check valve with impact damping function

    CN116906636A

  • Sediment prevention structure and butterfly valve comprising same

    CN117967800A

  • Flow-controllable self-filtering butterfly valve

    CN118030864A

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