消除阀板与阀座摩擦力矩的蝶阀

By introducing a movable valve seat and a reversing valve structure into the butterfly valve, and using water pressure to control the movement of the movable valve seat, the problem of frictional torque between the valve plate and the valve seat is solved, realizing frictionless switching operation, and improving the service life and ease of operation of the butterfly valve.

CN121139694BActive Publication Date: 2026-07-17TIANJIN TANGGU WATER SEAL VALVE
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Patent Information

Application Number
CN202511433954.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-10-09
Publication Date
2026-07-17
Estimated Expiration
2045-10-09

AI Technical Summary

Technical Problem

In the use of existing butterfly valves, the friction between the valve plate and the valve seat causes wear and makes opening and closing inconvenient.

Method used

By setting a movable valve seat, a first reversing valve, and a second reversing valve in the butterfly valve, the movement of the movable valve seat is controlled by water pressure, so that the butterfly valve plate can rotate without friction torque when opening and closing. The inclined surface design and sealing ring are used to improve the sealing effect.

Benefits of technology

It effectively avoids wear between the valve plate and the valve seat, reduces switching resistance, makes the butterfly valve operation more convenient, and extends its service life.

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Abstract

本发明涉及阀体技术领域，提出了一种消除阀板与阀座摩擦力矩的蝶阀，主阀体包括具有进水端和出水端的阀腔，阀杆与驱动执行机构连接，蝶阀板设置在阀杆的另一端，蝶阀板位于阀腔内，活动阀座、第一换向阀和第二换向阀，活动阀座沿阀腔的轴向可移动设置在主阀体内，活动阀座与主阀体内壁之间设置有推进腔和脱开腔，第一换向阀与进水端和出水端连通，第二换向阀连通推进腔和脱开腔，第一换向阀和第二换向阀可根据阀杆的转动位置选择性地连通，蝶阀板由开启转动至关闭位置时，推进腔选择性地与进水端或者出水端中的高压侧连通，蝶阀板由关闭位置转动至开启时，脱开腔与进水端连通。解决了蝶阀由于阀板与阀座之间摩擦力导致阀板磨损及开关不便的问题。
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Citation Information

Patent Citations

  • Two-way sealing butterfly valve with hydraulic-floating valve seat and sediment prevention function

    CN103759024A

  • Eccentric butterfly valve

    CN120701759A