The utility model relates to a pressure relief valve, constant pressure valve, comprising a valve body, a valve cover and set in the valve body and matched with the valve slide valve plug, the valve body is also provided with a water inlet and a water outlet cavity through the water inlet and the water outlet cavity is arranged in the valve body cavity regulating valve plug is provided with one end of China Unicom, through a fixing piece the linkage with the valve plug of the elastic adjusting component, elastic adjusting component and elastic diaphragm seal is provided with a regulating cavity between the two sides of the diaphragm and the elastic sealing elastic adjusting component and plug in close contact, the elastic sealing membrane surrounding sealing is fixed on the valve body, the valve plug in the contact surface and the valve body is provided with an annular sealing groove, an annular sealing groove is provided with a the sealing ring and the other end is fixedly provided with a valve plug valve, the valve flap and the valve body with a valve plug and through linkage and adjust the size of the water inlet cavity to realize the regulation of water flow, elastic sealing Ring and the cross section of one side of the body with V shape, forming two annular contact surface and the body, so that the original a large contact surface into two small contact surface, reducing the valve body and the valve plug moves relative to the resistance, improve the accuracy of the pressure valve, with two-way sealing the effect that the valve can operate normally, regulate the flow of water.?
【技术实现步骤摘要】
本技术涉及一种阀门,特别是减压恒压阀。
技术介绍
目前市场上的减压恒压阀,其主体结构一般都包括阀体、阀盖和设置在阀体中并 与阀体滑动配合的阀塞,阀体还设有进水腔和出水腔,进水腔和出水腔通过设置在阀体中 的调节腔联通,阀塞一端设有与阀塞联动的弹性调节组件,弹性调节组件和调节腔之间设 有弹性密封膜片,弹性密封膜片两侧分别与弹性调节组件和阀塞紧密接触,弹性密封膜片 周边密封固定在阀体上,阀塞另一端固设阀瓣,阀瓣与阀体配合并通过与阀塞的联动改变 调节腔进水口大小以实现对水流的调节,这样的设置是在水流从进水腔经过调节腔进入出 水腔时,水流会充满阀体,因而会对弹性密封膜片产生一个冲击力,这个冲击力会与弹性调 节组件的弹力相互作用,当进水压力很大,即出水腔水压很大时,作用在弹性密封膜片上的 作用力就很大,继而会克服弹性调节组件的弹力,弹性调节组件带动阀瓣移动使得调节腔 的进口縮小,这样出水腔的水压就会减小,当弹性调节组件的弹力大于水流的作用力时,调 节腔进水口就会扩大,进入调节腔的水量增多,出水腔的水压跟着会增大,当然,如果水流 的冲力不足以使水流充满调节腔,或者水流对弹性密封膜片的作用力不足以与弹性调节组 件的初始弹力抗衡,阀塞也就不会再有调节的情况,这样在水流作用力和弹性调节组件的 弹力的不断平衡中,即调节腔进水口大小的不断的调整中,最终会使得出水腔的出水压力 趋于稳定,即阀前水压不大于弹簧最大弹力,阀门都保持阀后压力稳定,也就是说,这种减 压恒压阀是靠进水腔和调节腔的节流作用减压,靠弹性密封膜片上力的平衡进行稳压。这 样通过阀门自身的调节来实现对水流的控制,阀门 ...
【技术保护点】
一种减压恒压阀,包括阀体、阀盖和设置在阀体中并与阀体滑动配合的阀塞,阀体还设有进水腔和出水腔,进水腔和出水腔通过设置在阀体中的调节腔联通,阀塞一端设有通过固定件与阀塞联动的弹性调节组件,弹性调节组件和调节腔之间设有弹性密封膜片,弹性密封膜片两侧分别与弹性调节组件和阀塞紧密接触,弹性密封膜片周边密封固定在阀体上,阀塞在与阀体接触面上设有环形密封槽,环形密封槽内设有弹性密封圈,阀塞另一端固设阀瓣,阀瓣与阀体配合并通过与阀塞的联动改变调节腔进水口大小以实现对水流的调节,其特征在于:所述的弹性密封圈与阀体抵触一侧的横截面为V形,与阀体形成两个环状接触面。
【技术特征摘要】
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