CN2247745Y - 金属密封双向切换阀 - Google Patents

金属密封双向切换阀 Download PDF

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Publication number
CN2247745Y
CN2247745Y CN 94237018 CN94237018U CN2247745Y CN 2247745 Y CN2247745 Y CN 2247745Y CN 94237018 CN94237018 CN 94237018 CN 94237018 U CN94237018 U CN 94237018U CN 2247745 Y CN2247745 Y CN 2247745Y
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sealing
tubular metal
valve
way
butterfly
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CN 94237018
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刘普成
胡平
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CHANGSHA CITY VALVE FACTORY
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CHANGSHA CITY VALVE FACTORY
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Abstract

一种金属密封双向切换阀,属硬密封蝶阀范围。它由阀体,蝶板,金属管状弹性密封圈,操纵装置等部分组成。其优点是:由于蝶板外端面均为非对称弧形,它与带小孔的金属管状弹性密封圈进行配合后,提高了单向密封效果,可进行双向密封,且增加了密封件的使用寿命,使制造、维修方便。

Description

金属密封双向切换阀
本实用新型涉及一种金属,硬密封蝶阀范围。适用于发电厂、冶金行业和城市供热部门,作热流体输送时开放,截止和调节流量用。
在现有技术中,如我厂生产的专利号为88212280对夹式金属硬密封蝶阀,因它的蝶板与阀轴垂直的截面一端为对称弧形,其另一端为非对称弧形,又因密封圈无小孔,在阀工作时造成不利于密封的变形,影响了密封效果,只能单向密封,而且制造难度大。
本实用新型的目的是:设计一种能在中温、中压下工作而且密封性能更好,又不需拆卸修理,制造简单,使用寿命更长的蝶阀。
本实用新型由阀体,蝶板和金属管状弹性密封圈,操纵装置等部份组成。其蝶板的外端面均为非对称弧形,金属管状弹性密封圈上钻有一个小孔,其直径为1.5---3mm,双向切换阀的公称通径为150---6000mm。
下面结合附合图作详细叙述:
图1、为金属密封双向切换阀的主视图
图2、为金属密封双向切换阀的俯视图
图3、为金属密封双向切换阀的截面图
图4、为金属管状弹性密封圈的截面图
见图1、2、3、4,本实用新型由操纵装置(4),蝶板(2),阀体(1),金属管状弹性密封圈(3)等部份组成。其阀可采用手动,电动,液动等方式带动蝶板(2)转动。当蝶板(2)完全关闭时,因蝶板(2)的外端面为非对称弧形,它与装在阀体(1)上带小孔的金属管状弹性密封圈(3)相配合,达到双向密封的效果。在蝶板(2)开启时,蝶板(2)的外端面有两点与金属管状弹性密封圈(3)接触。当阀工作时,因金属管状弹性密封圈(3)上钻有小孔,使金属管状弹性密封圈(3)内产生背压,使密封圈(3)具有更好的回弹性能,增加了双向密封的效果。
本实用新型与现有技术相比,其优点在于能承受较高的压力和温度的热流介质的作用,能进行双向密封,增加了密封件的使用寿命,而且制造简单,维修方便。

Claims (3)

1、一种金属密封双向切换阀,由阀体(1),蝶板(2),密封圈(3)和操纵装置(4)组成,其特征在于:蝶板(2)的外端面均为非对称弧形,金属管状弹性密封圈(3)上钻有小孔。
2、根据权利要求1所述的切换阀,其特征在于:金属管状弹性密封圈(3)上的小孔为Φ1.5mm---Φ3mm。
3、根据权利要求1所述的切换阀,其特征在于:双向切换阀的公称通径为(150---6000)mm。
CN 94237018 1994-04-01 1994-04-01 金属密封双向切换阀 Expired - Fee Related CN2247745Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 94237018 CN2247745Y (zh) 1994-04-01 1994-04-01 金属密封双向切换阀

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 94237018 CN2247745Y (zh) 1994-04-01 1994-04-01 金属密封双向切换阀

Publications (1)

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CN2247745Y true CN2247745Y (zh) 1997-02-19

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CN 94237018 Expired - Fee Related CN2247745Y (zh) 1994-04-01 1994-04-01 金属密封双向切换阀

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CN (1) CN2247745Y (zh)

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