Floating ball valve

CN224693986UActive Publication Date: 2026-08-28BRAY (CHINA) CONTROLS CO LTD
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Patent Information

Application Number
CN202521549938.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-24
Publication Date
2026-08-28
Estimated Expiration
2035-07-24

AI Technical Summary

Technical Problem

当管道压力波动或管道压力方向发生变化时，球体在介质压力作用下会产生位移，当球体和阀座脱离后，阀座就失去了对阀体的压紧力，阀座和阀体之间也会随之产生间隙，固体颗粒就会进入缝隙中，尤其是细小的颗粒，当缝隙中堆积固体颗粒后，关闭阀门时，在介质压力下阀座无法再回到原始密封位置贴近阀体密封，同时由于颗粒介质的堆积产生的缝隙，阀座与阀体之间的密封圈也会被介质冲刷，从而引起密封失效，为了避免上述失效问题的产生，专利公告文献CN203656252U中公开了一种通过增设蝶形弹簧来改善球体处密封性能的方法，但是蝶形弹簧受到反向压力冲击时，可能会出现翻转，导致密封失效，且组装时蝶形弹簧有方向限制，容易误装

Benefits of technology

[0006]本种浮动球阀中，由于采用了板簧来代替蝶形弹簧，相对于蝶形弹簧，由于板簧不存在正反之后，所以在安装时不易误撞，且由于板簧不存在正反之分，所以板簧在设置了主阀座与阀体之间后，板簧将主阀座弹向阀盖，使得主阀座与阀盖之间处于密封贴紧的状态，即使受到反向冲击，板簧也不会像蝶形弹簧那样失效，密封可靠性更强。

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Abstract

The utility model discloses a kind of floating ball valves, including valve body, valve cover, valve ball and valve rod, the valve rod is rotationally arranged on the valve body, the valve ball is arranged on the valve rod, the valve ball is located in valve body, the valve cover is arranged at one end of valve body, the valve body is provided with secondary valve seat, the valve cover is provided with main valve seat, the main valve seat and secondary valve seat are respectively located at both ends of valve ball, further including leaf spring, the leaf spring one end is against the valve body, the leaf spring other end is against the main valve seat, the leaf spring has the tendency of main valve seat to be bounced to stick to valve cover.This kind of floating ball valve has the following beneficial effects: by using leaf spring instead of butterfly spring, leaf spring does not exist positive and negative, it will not be misassembled when installing, and there will be no sealing failure problem when being impacted in reverse.
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Citation Information

Patent Citations

  • Sealing structure for floating hard-sealing ball valve and floating hard-sealing ball valve

    CN203656252U