CN2871848Y - 杠杆式换向阀 - Google Patents

杠杆式换向阀 Download PDF

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Publication number
CN2871848Y
CN2871848Y CN 200620101289 CN200620101289U CN2871848Y CN 2871848 Y CN2871848 Y CN 2871848Y CN 200620101289 CN200620101289 CN 200620101289 CN 200620101289 U CN200620101289 U CN 200620101289U CN 2871848 Y CN2871848 Y CN 2871848Y
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valve
lever
valve body
spring
gland nut
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洪凌海
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Hydraulic Ltd By Share Ltd
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Abstract

一种杠杆式换向阀，它由操作机构、压杆组件、压紧螺套、阀套、阀体、弹簧组成，阀体开有两个工作腔，两个工作腔有两处相通即一处为进液孔而另一处为回液孔，两个工作腔结构相同，在两个工作腔左端放入阀套、压杆组件、拧入压紧螺套，在阀体的左端面固定操作机构，在两个工作腔右端放入阀杆组件、弹簧、拧入接头，操作机构中增加杠杆，该杠杆两端嵌入两个压杆组件。压紧螺套带导套，与导套合为一体。它能确保回液畅通，保证液压支架安全。同时，提高了密封性能和导向性能。

Description

杠杆式换向阀
                         一、所属技术领域
本实用新型涉及一种换向阀，尤其是指一种额定流量为200L/min的杠杆式换向阀。
                         二、背景技术
在煤矿行业，也有人把换向阀称为“操纵阀”或“控制阀”。换向阀在液压支架控制系统中，控制液流方向，实现液压支架升降、推移、拉架、侧护板伸收、片邦伸收等不同动作。目前，国内额定流量为200L/min的换向阀由操作机构、压杆组件、压紧螺套、导套、阀套、阀体、回液弹簧和弹簧组成，阀体开有两个工作腔，两个工作腔有两处相通即一处为进液孔而另一处为回液孔，两个工作腔结构相同，在两个工作腔左端放入阀套、回液弹簧、压杆组件、导套、拧入压紧螺套，在阀体的左端面固定操作机构，在两个工作腔右端放入阀杆组件、弹簧、拧入接头，当操作机构压下一侧给液压支架供液时，另一侧在弹簧作用下压杆组件撑开，支架立柱中的乳化液从该口流回乳化液箱。但是，目前在全国众多煤矿井下使用，出现了众多液压支架立柱爆缸现象，全部都是由于压杆组件无法撑开，导致回液不畅，出现严重的背压而造成的。该种现象严重地影响了煤矿的生产安全。
                      三、实用新型内容
本实用新型的目的在于提供一种额定流量为200L/min的杠杆式换向阀，它能确保回液畅通，保证液压支架安全。同时，提高了密封性能和导向性能。
为了达到上述目的，本实用新型采取的解决方案是：一种杠杆式换向阀，它由操作机构、压杆组件、压紧螺套、阀套、阀体、弹簧组成，阀体开有两个工作腔，两个工作腔有两处相通即一处为进液孔而另一处为回液孔，两个工作腔结构相同，在两个工作腔左端放入阀套、压杆组件、拧入压紧螺套，在阀体的左端面固定操作机构，在两个工作腔右端放入阀杆组件、弹簧、拧入接头，操作机构中增加杠杆，该杠杆两端嵌入两个压杆组件。压紧螺套带导套，与导套合为一体，
它的额定流量为200L/min。由于增加了杠杆，当操作机构压下侧给液压支架供液时，另一侧在杠杆的作用下，压杆组件强制性撑开，保证回液孔始终处于开口状态，避免了目前额定流量为200L/min的换向阀压杆组件掌不开、不能有效回液的危害。由于取消了回液弹簧，减小了操作机构的操作力矩，避免了因回液弹簧往复动运摩擦，造成密封泄漏。压紧螺套与导套合为一体，提高了导向性能。
                      四、附图说明
图1是本实施例主视剖面结构图。
图中：1、接头，2、弹簧，3、阀杆组件，4、阀套，5、压杆组件，6、压紧螺套，7、阀体，8、操作机构，9、杠杆。
                     五、具体实施方式
下面结合实施例及其附图对本实用新型再作描述。
参见图1，一种杠杆式换向阀，它由操作机构8、压杆组件5、压紧螺套6、阀套4、阀体7、弹簧2组成，阀体7开有两个工作腔，两个工作腔有两处相通即一处为进液孔而另一处为回液孔，两个工作腔结构相同，在两个工作腔左端放入阀套4、压杆组件5、拧入压紧螺套6，在阀体7的左端面固定操作机构8，在两个工作腔右端放入阀杆组件3、弹簧2、拧入接头1，操作机构8中增加杠杆9，该杠杆9两端嵌入两个压杆组件5。压紧螺套6带导套，压紧螺套6与导套合为一体。

Claims (2)

1、一种杠杆式换向阀，它由操作机构(8)、压杆组件(5)、压紧螺套(6)、阀套(4)、阀体(7)、弹簧(2)组成，阀体(7)开有两个工作腔，两个工作腔有两处相通即一处为进液孔而另一处为回液孔，两个工作腔结构相同，在两个工作腔左端放入阀套(4)、压杆组件(5)、拧入压紧螺套(6)，在阀体(7)的左端面固定操作机构(8)，在两个工作腔右端放入阀杆组件(3)、弹簧(2)、拧入接头(1)，其特征在于：操作机构(8)中增加杠杆(9)，该杠杆(9)两端嵌入两个压杆组件(5)。
2、根据权利要求1所述的杠杆式换向阀，其特征在于：压紧螺套(6)带导套，压紧螺套(6)与导套合为一体。
CN 200620101289 2006-02-24 2006-02-24 杠杆式换向阀 Expired - Lifetime CN2871848Y (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014187199A1 (zh) * 2013-05-24 2014-11-27 厦门松霖科技有限公司 杠杆式切换阀

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014187199A1 (zh) * 2013-05-24 2014-11-27 厦门松霖科技有限公司 杠杆式切换阀
US9909684B2 (en) 2013-05-24 2018-03-06 Xiamen Solex High-Tech Industries Co., Ltd. Lever type switch valve

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Assignee: Fenglong Forging Elements Co., Ltd., Zhejiang

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Contract fulfillment period: 2009.9.16 to 2014.9.15

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