CN113389905A - 一种蝶阀 - Google Patents

一种蝶阀 Download PDF

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CN113389905A
CN113389905A CN202110691389.9A CN202110691389A CN113389905A CN 113389905 A CN113389905 A CN 113389905A CN 202110691389 A CN202110691389 A CN 202110691389A CN 113389905 A CN113389905 A CN 113389905A
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valve
clack
rod
valve clack
slot
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CN113389905B (zh
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陆诗雨
李晓慧
郑志刚
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Xifulong Valve Group Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/223—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves with a plurality of valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226—Shaping or arrangements of the sealing
    • F16K1/2261—Shaping or arrangements of the sealing the sealing being arranged on the valve member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226—Shaping or arrangements of the sealing
    • F16K1/2263—Shaping or arrangements of the sealing the sealing being arranged on the valve seat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0209—Check valves or pivoted valves
    • F16K27/0218—Butterfly valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/53—Mechanical actuating means with toothed gearing
    • F16K31/535—Mechanical actuating means with toothed gearing for rotating valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/60—Handles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K35/00—Means to prevent accidental or unauthorised actuation
    • F16K35/02—Means to prevent accidental or unauthorised actuation to be locked or disconnected by means of a pushing or pulling action
    • F16K35/022—Means to prevent accidental or unauthorised actuation to be locked or disconnected by means of a pushing or pulling action the locking mechanism being actuated by a separate actuating element
    • F16K35/025—Means to prevent accidental or unauthorised actuation to be locked or disconnected by means of a pushing or pulling action the locking mechanism being actuated by a separate actuating element said actuating element being operated manually (e.g. a push-button located in the valve actuator)
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

本发明公开了一种蝶阀，包括阀体，所述阀体内设有左右贯穿的通道，所述通道的内侧壁沿径向设有环形凸肩，所述环形凸肩合围形成向左收缩的锥孔，所述锥孔的内侧壁上设有左密封环和右密封环，所述阀体内在环形凸肩的右侧转动连接有阀杆，所述阀杆上固定设有两个导滑杆，两个导滑杆沿通道的轴向设置，两个导滑杆上滑动连接有第一阀瓣和第二阀瓣，所述传动组件用于控制第一阀瓣和第二阀瓣沿两个导滑杆反向运动；所述阀杆内设有用于控制第一阀瓣沿两个导滑杆运动的驱动组件；该蝶阀不仅结构简单，而且使用寿命长。

Description

一种蝶阀
技术领域
本发明涉及管道阀门领域，尤其涉及一种蝶阀。
背景技术
蝶阀是目前应用最为广泛的阀门之一。一般蝶阀包括阀体、阀座、阀杆、阀瓣。即，该阀座固定于该阀体内腔中，该阀瓣位于该阀座的内腔中，该阀瓣旋转后其边缘和阀座密封或打开，而该阀杆用于带动该阀瓣进行旋转，该阀杆的上部穿过该阀体的上部之后连接至手柄或者执行器等旋转装置。然而蝶阀在使用时，阀瓣两端介质压差较大，使得阀瓣在开启和关闭的过程中与阀座密封件会产生较大摩擦，长时间工作后会对阀瓣和密封件造成磨损，影响蝶阀的使用寿命；而维修蝶阀还需要将其从管路上拆下，不仅过程繁琐，还影响整个系统的工作。
发明内容
本发明的目的在于提供一种蝶阀，其不仅结构简单，而且使用寿命长。
为实现上述目的，本发明提供如下技术方案：一种蝶阀，包括阀体，所述阀体内设有左右贯穿的通道，所述通道的内侧壁沿径向设有环形凸肩，所述环形凸肩合围形成向左收缩的锥孔，所述锥孔的内侧壁上设有左密封环和右密封环，所述阀体内在环形凸肩的右侧转动连接有阀杆，所述阀杆上固定设有两个导滑杆，两个导滑杆沿通道的轴向设置，两个导滑杆上滑动连接有第一阀瓣和第二阀瓣，在第一阀瓣处于工作位置且蝶阀关闭时，第一阀瓣压紧在右密封环上，第二阀瓣离开左密封环；在第二阀瓣处于工作位置且蝶阀关闭时，第一阀瓣离开右密封环上，第二阀瓣压紧在左密封环上；所述述第一阀瓣和第二阀瓣之间设有传动组件，所述传动组件用于控制第一阀瓣和第二阀瓣沿两个导滑杆反向运动；所述阀杆内设有用于控制第一阀瓣沿两个导滑杆运动的驱动组件。
进一步的，所述传动组件包括传动连杆，每个导滑杆上均设有切槽，所述第一阀瓣在靠近切槽的侧面设有第一避让槽，所述第二阀瓣在靠近切槽的侧面设有第二避让槽，所述传动连杆的中部铰接在切槽内，所述第一避让槽内沿竖直方向设有第一滑槽，所述第二避让槽内沿竖直方向设有第二滑槽，所述传动连杆的一端位于第一避让槽内且设有位于第一滑槽内的第一凸柱，所述传动连杆的另一端位于第二避让槽内且设有位于第二滑槽内的第二凸柱；在第一阀瓣向远离阀杆方向运动时，第一阀瓣通过传动连杆驱动第二阀瓣向靠近第一阀瓣方向运动；在第一阀瓣向靠近阀杆方向运动时，第一阀瓣通过传动连杆驱动第二阀瓣远离第一阀瓣方向运动。
进一步的，所述第一阀瓣在远离阀杆的端面设有槽口，在第一阀瓣处于工作位置时，第二阀瓣缩入槽口内；在第二阀瓣处于工作位置时，第二阀瓣伸出槽口。
进一步的，所述驱动组件包括驱动轴，所述阀杆的侧面设有安装槽，所述第一阀瓣上设有伸入安装槽内的丝杆，所述安装槽内转动连接有与丝杆螺纹连接的第一锥形齿，所述安装槽的开口处固定设有套接在丝杆上的螺堵，所述螺堵用于防止第一锥形齿沿丝杆的轴向运动，所述驱动轴沿阀杆的轴向转动连接在阀杆内，所述驱动轴的上端伸出阀杆且固定设有旋钮，所述驱动轴的下端伸入安装槽内且固定设有与第一锥形齿啮合的第二锥形齿，所述第二锥形齿用于驱动第一锥形齿转动。
进一步的，所述阀体的上端在阀杆的外侧设有转槽，所述转槽内固定设有套接在阀杆外侧的密封圈，所述阀杆外侧设有位于密封圈上方的凸边，所述转槽的上端固定设有套接在阀杆上且位于凸边上方的堵块。
进一步的，所述阀杆的上端固定安装有手柄杆，所述堵块上固定安装有的定位盘，所述定位盘的外圆周侧面设有定位凹槽，所述手柄杆上铰接有定位把手，所述定位把手与手柄杆的之间设有受压缩的第一弹簧，所述第一弹簧用于迫使定位把手的一端伸入定位凹槽内。
有益效果
与现有技术相比，本发明的技术方案具有以下优点：
1.通过使用第一阀瓣和第二阀瓣相配合，在第一阀瓣产生磨损泄露后，再让第二阀瓣进行工作，延长蝶阀的使用寿命；
2.通过使用第一阀瓣和第二阀瓣相配合，在第一阀瓣产生磨损泄露后，通过旋转旋钮就可以控制第二阀瓣进行密封工作，方便快捷。
附图说明
图1为本发明第一阀瓣处于工作位置时的剖视图；
图2为本发明第二阀瓣处于工作位置时的剖视图；
图3为本发明图1中I处的放大图；
图4为本发明图1中II处的放的图。
具体实施方式
请参阅图1-4所示，一种蝶阀，包括阀体1，所述阀体1内设有左右贯穿的通道1m，所述通道1m的内侧壁沿径向设有环形凸肩1n，所述环形凸肩1n合围形成向左收缩的锥孔，所述锥孔的内侧壁上设有左密封环1a和右密封环1b，所述阀体1内在环形凸肩1n的右侧转动连接有阀杆2，所述阀杆2上固定设有两个导滑杆5，两个导滑杆5沿通道1m的轴向设置，两个导滑杆5上滑动连接有第一阀瓣3和第二阀瓣4，在第一阀瓣3处于工作位置且蝶阀关闭时，第一阀瓣3压紧在右密封环1b上，第二阀瓣4离开左密封环1a；在第二阀瓣4处于工作位置且蝶阀关闭时，第一阀瓣3离开右密封环1b上，第二阀瓣4压紧在左密封环1a上；所述述第一阀瓣3和第二阀瓣4之间设有传动组件，所述传动组件用于控制第一阀瓣3和第二阀瓣4沿两个导滑杆5反向运动；所述阀杆2内设有用于控制第一阀瓣3沿两个导滑杆5运动的驱动组件。
所述传动组件包括传动连杆9，每个导滑杆5上均设有切槽51，所述第一阀瓣3在靠近切槽51的侧面设有第一避让槽31，所述第二阀瓣4在靠近切槽51的侧面设有第二避让槽41，所述传动连杆9的中部铰接在切槽51内，所述第一避让槽31内沿竖直方向设有第一滑槽3a，所述第二避让槽41内沿竖直方向设有第二滑槽4a，所述传动连杆9的一端位于第一避让槽31内且设有位于第一滑槽3a内的第一凸柱9a，所述传动连杆9的另一端位于第二避让槽41内且设有位于第二滑槽4a内的第二凸柱9b；在第一阀瓣3向远离阀杆2方向运动时，第一阀瓣3通过传动连杆9驱动第二阀瓣4向靠近第一阀瓣3方向运动；在第一阀瓣3向靠近阀杆2方向运动时，第一阀瓣3通过传动连杆9驱动第二阀瓣4远离第一阀瓣3方向运动。所述第一阀瓣3在远离阀杆2的端面设有槽口32，在第一阀瓣3处于工作位置时，第二阀瓣4缩入槽口32内；在第二阀瓣4处于工作位置时，第二阀瓣4伸出槽口32。
所述驱动组件包括驱动轴8，所述阀杆2的侧面设有安装槽21，所述第一阀瓣3上设有伸入安装槽21内的丝杆3b，所述安装槽21内转动连接有与丝杆3b螺纹连接的第一锥形齿91，所述安装槽21的开口处固定设有套接在丝杆3b上的螺堵93，所述螺堵93用于防止第一锥形齿91沿丝杆3b的轴向运动，所述驱动轴8沿阀杆2的轴向转动连接在阀杆2内，所述驱动轴8的上端伸出阀杆2且固定设有旋钮7，所述驱动轴8的下端伸入安装槽21内且固定设有与第一锥形齿91啮合的第二锥形齿92，所述第二锥形齿92用于驱动第一锥形齿91转动。
所述阀体1的上端在阀杆2的外侧设有转槽1f，所述转槽1f内固定设有套接在阀杆2外侧的密封圈1g，所述阀杆2外侧设有位于密封圈1g上方的凸边22，所述转槽1f的上端固定设有套接在阀杆2上且位于凸边22上方的堵块1e。所述阀杆2的上端固定安装有手柄杆6，所述堵块1e上固定安装有的定位盘61，所述定位盘61的外圆周侧面设有定位凹槽(图中均未示出)，所述手柄杆6上铰接有定位把手62，所述定位把手62与手柄杆6的之间设有受压缩的第一弹簧63，所述第一弹簧63用于迫使定位把手62的一端伸入定位凹槽内。
如图1所示为，此时第一阀瓣3处于工作位置且与右密封环1b贴合，形成密封，第二阀瓣4位于槽口32内；当需要蝶阀打开时，首先捏住定位把手62将其解锁，旋转手柄杆6，通过阀杆2带动导滑杆5转动，从而带动第一阀瓣3和第二阀瓣4跟随旋转，使得蝶阀打开。
当蝶阀长时间工作右密封环1b和第一阀瓣3之间出现磨损发生泄露时，旋转旋钮7带动驱动轴8旋转，由于驱动轴8和第二锥齿轮固定连接，第二锥齿轮和第一锥齿轮啮合，使得旋转旋钮7带动第一锥齿轮转动，由于第一锥齿轮和丝杆3b螺纹连接，使得第一锥齿轮转动，带动丝杆3b向靠近阀杆2方向运动，带动第一阀瓣3沿导滑杆5滑动，使得第一阀瓣3和右密封环1b脱离，由于传动连杆9和导滑杆5铰接，传动连杆9上的第一凸柱9a在第一滑槽3a内滑动，第二凸柱9b在第二滑槽4a内滑动，使得当第一阀瓣3向靠近阀杆2移动时带动传动连杆9旋转，推动第二阀瓣4伸出槽口32运动至工作位置与左密封环1a贴合(如图2所示)，形成新的密封，由于第一锥齿轮和丝杆3b螺纹连接使得第二阀瓣4和左密封环1a可以一直处于贴紧状态，从而使得不需要将蝶阀拆下维修就可以使蝶阀重新密封，延长了蝶阀的使用寿命。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明技术原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (6)

1.一种蝶阀，其特征在于，包括阀体，所述阀体内设有左右贯穿的通道，所述通道的内侧壁沿径向设有环形凸肩，所述环形凸肩合围形成向左收缩的锥孔，所述锥孔的内侧壁上设有左密封环和右密封环，所述阀体内在环形凸肩的右侧转动连接有阀杆，所述阀杆上固定设有两个导滑杆，两个导滑杆沿通道的轴向设置，两个导滑杆上滑动连接有第一阀瓣和第二阀瓣，在第一阀瓣处于工作位置且蝶阀关闭时，第一阀瓣压紧在右密封环上，第二阀瓣离开左密封环；在第二阀瓣处于工作位置且蝶阀关闭时，第一阀瓣离开右密封环上，第二阀瓣压紧在左密封环上；所述述第一阀瓣和第二阀瓣之间设有传动组件，所述传动组件用于控制第一阀瓣和第二阀瓣沿两个导滑杆反向运动；所述阀杆内设有用于控制第一阀瓣沿两个导滑杆运动的驱动组件。
2.根据权利要求1所述的蝶阀，其特征在于，所述传动组件包括传动连杆，每个导滑杆上均设有切槽，所述第一阀瓣在靠近切槽的侧面设有第一避让槽，所述第二阀瓣在靠近切槽的侧面设有第二避让槽，所述传动连杆的中部铰接在切槽内，所述第一避让槽内沿竖直方向设有第一滑槽，所述第二避让槽内沿竖直方向设有第二滑槽，所述传动连杆的一端位于第一避让槽内且设有位于第一滑槽内的第一凸柱，所述传动连杆的另一端位于第二避让槽内且设有位于第二滑槽内的第二凸柱；在第一阀瓣向远离阀杆方向运动时，第一阀瓣通过传动连杆驱动第二阀瓣向靠近第一阀瓣方向运动；在第一阀瓣向靠近阀杆方向运动时，第一阀瓣通过传动连杆驱动第二阀瓣远离第一阀瓣方向运动。
3.根据权利要求2所述的蝶阀，其特征在于，所述第一阀瓣在远离阀杆的端面设有槽口，在第一阀瓣处于工作位置时，第二阀瓣缩入槽口内；在第二阀瓣处于工作位置时，第二阀瓣伸出槽口。
4.根据权利要求2所述的蝶阀，其特征在于，所述驱动组件包括驱动轴，所述阀杆的侧面设有安装槽，所述第一阀瓣上设有伸入安装槽内的丝杆，所述安装槽内转动连接有与丝杆螺纹连接的第一锥形齿，所述安装槽的开口处固定设有套接在丝杆上的螺堵，所述螺堵用于防止第一锥形齿沿丝杆的轴向运动，所述驱动轴沿阀杆的轴向转动连接在阀杆内，所述驱动轴的上端伸出阀杆且固定设有旋钮，所述驱动轴的下端伸入安装槽内且固定设有与第一锥形齿啮合的第二锥形齿，所述第二锥形齿用于驱动第一锥形齿转动。
5.根据权利要求1所述的蝶阀，其特征在于，所述阀体的上端在阀杆的外侧设有转槽，所述转槽内固定设有套接在阀杆外侧的密封圈，所述阀杆外侧设有位于密封圈上方的凸边，所述转槽的上端固定设有套接在阀杆上且位于凸边上方的堵块。
6.根据权利要求5所述的蝶阀，其特征在于，所述阀杆的上端固定安装有手柄杆，所述堵块上固定安装有的定位盘，所述定位盘的外圆周侧面设有定位凹槽，所述手柄杆上铰接有定位把手，所述定位把手与手柄杆的之间设有受压缩的第一弹簧，所述第一弹簧用于迫使定位把手的一端伸入定位凹槽内。
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CN204878759U (zh) * 2015-06-12 2015-12-16 江苏特一机械股份有限公司 双板式水封蝶阀
CN206017760U (zh) * 2016-08-26 2017-03-15 江苏苏盐阀门机械有限公司 一种高密封性蝶阀
CN111173986A (zh) * 2020-01-20 2020-05-19 邵延荣 一种预泄压蝶阀
CN111677889A (zh) * 2020-06-24 2020-09-18 邵玉强 一种低摩擦长寿命蝶阀

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204878759U (zh) * 2015-06-12 2015-12-16 江苏特一机械股份有限公司 双板式水封蝶阀
CN206017760U (zh) * 2016-08-26 2017-03-15 江苏苏盐阀门机械有限公司 一种高密封性蝶阀
CN111173986A (zh) * 2020-01-20 2020-05-19 邵延荣 一种预泄压蝶阀
CN111677889A (zh) * 2020-06-24 2020-09-18 邵玉强 一种低摩擦长寿命蝶阀

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