CN201866348U - 一种超深煤矿的可调式高压微阻缓闭式止回阀 - Google Patents
一种超深煤矿的可调式高压微阻缓闭式止回阀 Download PDFInfo
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- CN201866348U CN201866348U CN201020596956XU CN201020596956U CN201866348U CN 201866348 U CN201866348 U CN 201866348U CN 201020596956X U CN201020596956X U CN 201020596956XU CN 201020596956 U CN201020596956 U CN 201020596956U CN 201866348 U CN201866348 U CN 201866348U
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- valve
- buffering cylinder
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- flap
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[C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title abstract 2
- 239000003245 coal Substances 0.000 title abstract 2
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Abstract
本实用新型涉及一种超深煤矿的可调式高压微阻缓闭式止回阀，包括阀体，在阀体流道的阀座上设有一阀瓣；其创新点在于：所述阀体内还设有一缓冲缸，该缓冲缸的轴线与阀瓣轴线重合，缓冲缸的活塞与阀瓣连接固定，缓冲缸的有杆腔和无杆腔通过旁通管路连通。所述旁通管路上安装有位于阀体外的节流阀。本实用新型的优点在于：当阀体流道进口侧压力低于出口侧压力后，阀瓣在自重、弹簧等因素的作用关闭，而阀瓣在关闭时由于与缓冲缸的活塞连接，活塞在缓冲缸内缓慢移动，使得阀瓣缓慢关闭，避免出现水锤现象造成管路阀门的损伤。而在缓冲缸的旁通管路上安装有位于阀体外的节流阀，可对旁通管路的流量进行调节，从而实现活塞及阀瓣闭合速度的控制。
Description
一种超深煤矿的可调式高压微阻缓闭式止回阀
技术领域
[0001] 本实用新型涉及一种止回阀，特别涉及一种用于超深煤矿的可调式高压微阻缓闭 式止回阀，
背景技术
[0002] 止回阀又称单向阀或逆止阀，其作用是防止管路中的介质倒流。工作原理是止回 阀的阀瓣在流体压力作用下开启，流体从进口侧流向出口侧。当进口侧压力低于出口侧时， 阀瓣在流体压差、本身重力等因素作用下自动关闭以防止流体倒流。由传统的止回阀为快 速止回，即阀瓣闭合时较迅速，将该种止回阀安装到超深煤矿的高压管路上时，止回阀阀瓣 快速闭合会造成高压管道内出现水锤现象，易造成高压管路阀门的损坏。
实用新型内容
[0003] 本实用新型要解决的技术问题是提供一种用于超深煤矿的可调式高压微阻缓闭 式止回阀，阀瓣闭合缓慢，避免管道出现水锤造成管路损坏。
[0004] 为解决上述技术问题，本实用新型的技术方案为：一种超深煤矿的可调式高压微 阻缓闭式止回阀，包括阀体，在阀体流道的阀座上设有一阀瓣；其创新点在于：所述阀体内 还设有一缓冲缸，该缓冲缸的轴线与阀瓣轴线重合，缓冲缸的活塞与阀瓣连接固定，缓冲缸 的有杆腔和无杆腔通过旁通管路连通。
[0005] 进一步的，所述旁通管路上安装有位于阀体外的节流阀。
[0006] 本实用新型的优点在于：当阀体流道进口侧压力低于出口侧压力后，阀瓣在自重、 弹簧等因素的作用关闭，而阀瓣在关闭时由于与缓冲缸的活塞连接，活塞在缓冲缸内缓慢 移动，使得阀瓣缓慢关闭，避免出现水锤现象造成管路阀门的损伤。而在缓冲缸的旁通管路 上安装有位于阀体外的节流阀，可对旁通管路的流量进行调节，从而实现活塞及阀瓣闭合 速度的控制。
附图说明
[0007] 附图为本实用新型超深煤矿的可调式高压微阻缓闭式止回阀结构示意图。 具体实施方式
[0008] 如附图所示，包括阀体1、阀瓣2、回位弹簧3、导向套4、回位弹簧5、缓冲缸6、活塞 7、旁通管路8、节流阀9。
[0009] 上述阀体1的流道阀座上设有一阀瓣2，阀瓣2的背部连接有一导向杆3，导向杆 3与固定在阀体1端面上的导向套4滑动连接，导向杆3上套装有两弹簧座，在两弹簧座之 间安装有回位弹簧5。
[0010] 缓冲缸6设置在阀体1内，通过螺栓余阀体1固定，其轴线与阀瓣2的轴线重合， 缓冲缸6的活塞7与阀瓣2连接固定，缓冲缸6的有杆腔和无杆腔通过旁通管路8连通，缓冲缸6内可充液压油，也可根据缓冲力度要求更换为其他介质。旁通管路8上安装有位于 阀体1外的节流阀9，可对旁通管路8内的介质流量进行调节。
[0011] 当阀体流道进口侧压力低于出口侧压力后，阀瓣2在自重、弹簧5作用下下移关 闭,而与阀瓣2连接的活塞7在缓冲缸6内缓慢移动，使得阀瓣2缓慢关闭，避免出现水锤 现象造成管路阀门的损伤。
Claims (2)
1. 一种超深煤矿的可调式高压微阻缓闭式止回阀，包括阀体，在阀体流道的阀座上设 有一阀瓣；其特征在于：所述阀体内还设有一缓冲缸，该缓冲缸的轴线与阀瓣轴线重合，缓 冲缸的活塞与阀瓣连接固定，缓冲缸的有杆腔和无杆腔通过旁通管路连通。
2.根据权利要求1所述的超深煤矿的可调式高压微阻缓闭式止回阀，其特征在于：所 述旁通管路上安装有位于阀体外的节流阀。
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003557A (zh) * | 2010-11-09 | 2011-04-06 | 南通龙源电站阀门有限公司 | 一种超深煤矿的可调式高压微阻缓闭式止回阀 |
| CN103836254A (zh) * | 2013-11-21 | 2014-06-04 | 周明泉 | 一种零水损无噪音自控水泵控制阀 |
| CN106838389A (zh) * | 2017-03-31 | 2017-06-13 | 合肥悦兰信息技术有限公司 | 一种可控止回阀 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003557A (zh) * | 2010-11-09 | 2011-04-06 | 南通龙源电站阀门有限公司 | 一种超深煤矿的可调式高压微阻缓闭式止回阀 |
| CN103836254A (zh) * | 2013-11-21 | 2014-06-04 | 周明泉 | 一种零水损无噪音自控水泵控制阀 |
| CN103836254B (zh) * | 2013-11-21 | 2016-09-28 | 周明泉 | 一种无噪音自控水泵控制阀 |
| CN106838389A (zh) * | 2017-03-31 | 2017-06-13 | 合肥悦兰信息技术有限公司 | 一种可控止回阀 |
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