WO2022110572A1 - 一种弧形阀板的自密封蝶阀 - Google Patents

一种弧形阀板的自密封蝶阀 Download PDF

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Publication number
WO2022110572A1
WO2022110572A1 PCT/CN2021/080902 CN2021080902W WO2022110572A1 WO 2022110572 A1 WO2022110572 A1 WO 2022110572A1 CN 2021080902 W CN2021080902 W CN 2021080902W WO 2022110572 A1 WO2022110572 A1 WO 2022110572A1
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Prior art keywords
arc
butterfly valve
sealing
butterfly
self
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PCT/CN2021/080902
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English (en)
French (fr)
Inventor
张政新
丁丽娟
张建刚
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烟台精新汽车配件有限公司
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Priority to ES202390011U priority Critical patent/ES1304078Y/es
Publication of WO2022110572A1 publication Critical patent/WO2022110572A1/zh

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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
    • 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
    • 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
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/46—Attachment of sealing rings
    • 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
    • F16K41/00—Spindle sealings
    • F16K41/02—Spindle sealings with stuffing-box ; Sealing rings

Definitions

  • the invention relates to the technical field of butterfly valves, in particular to a self-sealing butterfly valve with an arc valve plate.
  • Butterfly valve also called flap valve
  • Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. It mainly plays the role of cutting and throttling on the pipeline.
  • the butterfly valve opening and closing part is a disc-shaped butterfly plate, which rotates around its own axis in the valve body to achieve the purpose of opening and closing or adjustment.
  • the sealing performance of the existing butterfly valve decreases after long-term use, and the butterfly valve may leak when the pressure of the medium is large. There is a need for a self-sealing butterfly valve with an arc-shaped valve plate on the market.
  • the present invention proposes a self-sealing butterfly valve with an arc-shaped valve plate to overcome the above-mentioned technical problems existing in the related art.
  • a self-sealing butterfly valve with an arc valve plate comprising a butterfly valve body, a bottom end of the butterfly valve body is provided with a chassis assembly, an inner middle end of the butterfly valve body is provided with a self-sealing assembly, and the side wall of the butterfly valve body is at the side of the self-sealing assembly.
  • a rotating assembly is provided.
  • the self-sealing assembly includes an arc-shaped butterfly plate body arranged at the inner middle end of the butterfly valve body, the top of the arc-shaped butterfly plate body and the inner side wall of the butterfly valve body are provided with an arc-shaped butterfly plate sealing ring installation groove, and the arc-shaped butterfly plate
  • An arc-shaped butterfly plate sealing ring is arranged in the sealing ring installation groove; the top end of the arc-shaped butterfly plate main body is provided with a sealing surface, and the sealing surface abuts against the bottom end of the arc-shaped butterfly plate sealing ring, and the arc-shaped butterfly plate main body is far away from the rotating assembly
  • One end of the valve is provided with a rotating shaft, and the end of the rotating shaft away from the main body of the arc-shaped butterfly plate extends into the side wall of the butterfly valve body, and one end of the main body of the arc-shaped butterfly plate close to the rotating assembly is provided with a slot.
  • the rotating assembly includes a rotating shaft arranged on the side wall of the butterfly valve body and connected with the card slot, and the end of the rotating shaft away from the card slot extends to
  • the outer side of the butterfly valve body is connected with the handle; the middle end of the rotating shaft is provided with two sets of rotating shaft sealing ring installation grooves in the side wall of the butterfly valve body, and the rotating shaft sealing ring installation groove is provided with a rotating shaft sealing ring.
  • the chassis assembly includes a chassis main body arranged at the bottom end of the butterfly valve body, the inner bottom end of the butterfly valve body is provided with a chassis sealing ring installation groove, and the chassis sealing ring installation groove is provided with a chassis sealing ring, And the top end of the chassis main body abuts against the chassis sealing ring.
  • the present invention can press the sealing surface on the main body of the arc-shaped butterfly plate to the arc-shaped butterfly plate sealing ring in the butterfly valve body by means of the pressure of the medium when the butterfly valve is closed, thereby ensuring and enhancing the
  • the sealing ability of the product has the characteristics of self-sealing, which eliminates the possibility of leakage of the disc of the existing butterfly valve after the force is increased.
  • FIG. 1 is a schematic structural diagram of a self-sealing butterfly valve with an arc-shaped valve plate according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of the relevant part of the main body of the arc-shaped butterfly plate of a self-sealing butterfly valve with an arc-shaped valve plate according to an embodiment of the present invention
  • Fig. 3 is the partial enlarged view of A place in Fig. 1;
  • FIG. 4 is a partial enlarged view of B in FIG. 1 .
  • Butterfly valve body 2. Chassis assembly; 201, Chassis body; 202, Chassis sealing ring installation groove; 203, Chassis sealing ring; Ring installation groove; 303, arc butterfly plate sealing ring; 304, sealing surface; 305, rotating shaft; 306, card groove; 4, rotating assembly; 401, rotating shaft; 402, handle; 403, shaft sealing ring installation groove; 404 , shaft sealing ring.
  • a self-sealing butterfly valve with an arc valve plate is provided.
  • the self-sealing butterfly valve with an arc valve plate includes a butterfly valve body 1, and the bottom end of the butterfly valve body 1 is provided with a chassis Component 2, the inner middle end of the butterfly valve body 1 is provided with a self-sealing component 3, and the side wall of the butterfly valve body 1 is provided with a rotating component 4 on the side of the self-sealing component 3.
  • the present invention has self-sealing properties, and prevents the possibility of leakage of the disc of the existing butterfly valve after the force is increased.
  • the self-sealing assembly 3 includes an arc-shaped disc body 301 disposed at the inner middle end of the butterfly valve body 1 .
  • the inner side wall is provided with an arc-shaped butterfly plate sealing ring installation groove 302, and the arc-shaped butterfly plate sealing ring installation groove 302 is provided with an arc-shaped butterfly plate sealing ring 303;
  • the top of the arc-shaped butterfly plate main body 301 is provided with a sealing surface 304,
  • the sealing surface 304 abuts against the bottom end of the arc-shaped butterfly plate sealing ring 303,
  • the arc-shaped butterfly plate main body 301 is provided with a rotating shaft 305 at one end away from the rotating assembly 4, and the rotating shaft 305 extends away from one end of the arc-shaped butterfly plate main body 301.
  • the end of the arc-shaped butterfly plate body 301 close to the rotating assembly 4 is provided with a clamping groove 306, so that when the butterfly valve is closed, the sealing surface on the arc-shaped butterfly plate body 301 can be closed by the pressure of the medium. 304 is pressed against the arc-shaped butterfly plate sealing ring 303 in the butterfly valve body 1, thereby ensuring and enhancing the sealing ability of the product, and has self-sealing characteristics.
  • the rotating assembly 4 includes a rotating shaft 401 disposed on the side wall of the butterfly valve body 1 and connected with the card slot 306, and the end of the rotating shaft 401 away from the card groove 306 extends to
  • the outer side of the butterfly valve body 1 is connected with the handle 402; the middle end of the rotating shaft 401 is provided with two sets of rotating shaft sealing ring installation grooves 403 in the side wall of the butterfly valve body 1, and the rotating shaft sealing ring installation groove 403 is provided with a rotating shaft sealing ring 404.
  • the chassis assembly 2 includes a chassis main body 201 disposed at the bottom end of the butterfly valve body 1, the inner bottom end of the butterfly valve body 1 is provided with a chassis sealing ring installation groove 202, and the chassis sealing ring is installed A chassis sealing ring 203 is disposed in the groove 202, and the top end of the chassis main body 201 abuts against the chassis sealing ring 203, so that the chassis can be sealed.
  • the handle 402 drives the rotating shaft 401 to rotate, and the rotating shaft 401 drives the arc-shaped butterfly plate main body 301 to rotate through the card slot 306 and makes the arc-shaped butterfly plate main body 301 reach a parallel state, as shown in FIG. 1 , at this time the sealing surface 304 abuts against the arc-shaped butterfly plate sealing ring 303. Since the cross-sectional area of the arc-shaped butterfly plate main body 301 is larger than the area of the outlet, when the medium exerts pressure on the arc-shaped butterfly plate main body 301, the sealing effect of the arc-shaped butterfly plate sealing ring 303 is made. better.
  • the sealing surface 304 on the main body 301 of the arc-shaped butterfly plate can be pressed against the butterfly valve body 1 by the pressure of the medium.
  • the inner arc butterfly plate sealing ring 303 ensures and enhances the sealing ability of this product, and has self-sealing characteristics, which eliminates the possibility of leakage after the butterfly plate of the existing butterfly valve is under increased stress. 301 increases the sealing effect after the force is increased.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)
  • Multiple-Way Valves (AREA)

Abstract

一种弧形阀板的自密封蝶阀，包括蝶阀体（1），蝶阀体（1）的底端设置有底盘组件（2），蝶阀体（1）的内部中端设置有自密封组件（3），蝶阀体（1）的侧壁且在自密封组件（3）的侧边设置有转动组件（4）。

Description

一种弧形阀板的自密封蝶阀 技术领域
本发明涉及蝶阀技术领域，具体来说，涉及一种弧形阀板的自密封蝶阀。
背景技术
蝶阀又叫翻板阀，是一种结构简单的调节阀。阀门可用于控制空气、水、蒸汽、各种腐蚀性介质、泥浆、油品、液态金属和放射性介质等各种类型流体的流动。在管道上主要起切断和节流作用。蝶阀启闭件是一个圆盘形的蝶板，在阀体内绕其自身的轴线旋转，从而达到启闭或调节的目的。
现有的蝶阀在长久使用后，其密封性能下降，当介质的压力较大时可能使蝶阀渗漏。现市场上需要一种弧形阀板的自密封蝶阀。
针对相关技术中的问题，目前尚未提出有效的解决方案。
发明内容
针对相关技术中的问题，本发明提出一种弧形阀板的自密封蝶阀，以克服现有相关技术所存在的上述技术问题。
为此，本发明采用的具体技术方案如下：
一种弧形阀板的自密封蝶阀，包括蝶阀体，蝶阀体的底端设置有底盘组件，蝶阀体的内部中端设置有自密封组件，蝶阀体的侧壁且在自密封组件的侧边设置有转动组件。
进一步的，为了能够在蝶阀关闭时，能够依靠介质的压力将弧形蝶板主体上的密封面压向蝶阀体内的弧形蝶板密封圈，进而保证和增强本产品的密封能力，具有自密封特性，自密封组件包括设置在蝶阀体内部中端的弧形蝶板主体，弧形蝶板主体的顶端且在蝶阀体的内部侧壁上设置有弧形蝶板密封圈安装槽，弧形蝶板密封圈安装槽内设置有弧形蝶板密封圈；弧形蝶板主体的顶端设置有密封面，且密封面与弧形蝶板密封圈的底端相抵靠，弧形蝶板主体远离转动组件的一端设置有转动轴，且转动轴远离弧形蝶板主体的一端延伸至蝶阀体的侧壁内，弧形蝶板主体靠近转动组件的一端设置有卡槽。
进一步的，为了能够转动弧形蝶板主体，且在转轴处达到了密封效果，转动组件包括设置在蝶阀体的侧壁上且与卡槽相连接的转轴，且转轴远离卡槽的一端延伸至蝶阀体的外侧并与手柄连接；转轴的中端且在蝶阀体的侧壁内设置有两组转轴密封圈安装槽，且转轴密封圈安装槽内设置有转轴密封圈。
进一步的，为了使底盘处达到密封的效果，底盘组件包括设置在蝶阀体底端的底盘主体，蝶阀体的内部底端设置有底盘密封圈安装槽，底盘密封圈安装槽内设置有底盘密封圈，且底盘主体的顶端抵靠底盘密封圈。
本发明的有益效果为：
(1)本发明通过设置自密封组件，从而能够在蝶阀关闭时，能够依靠介质的压力将弧形蝶板主体上的密封面压向蝶阀体内的弧形蝶板密封圈，进而保证和增强本产品的密封能力，具有自密封特性，杜绝了现有蝶阀的蝶板受力加大后发生渗漏的可能，反而弧形蝶板主体受力加大后加大了密封效果。
(2)通过设置转动组件，从而能够转动弧形蝶板主体；通过设置底盘密封圈，从而使底盘处达到密封的效果。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是根据本发明实施例的一种弧形阀板的自密封蝶阀的结构示意图；
图2是根据本发明实施例的一种弧形阀板的自密封蝶阀的弧形蝶板主体相关部分的结构示意图；
图3是图1中A处的局部放大图；
图4是图1中B处的局部放大图。
图中：
1、蝶阀体；2、底盘组件；201、底盘主体；202、底盘密封圈安装槽；203、底盘密封圈；3、自密封组件；301、弧形蝶板主体；302、弧形蝶板密封圈安装槽；303、弧形蝶板密封圈；304、密封面；305、转动轴；306、卡 槽；4、转动组件；401、转轴；402、手柄；403、转轴密封圈安装槽；404、转轴密封圈。
具体实施方式
为进一步说明各实施例，本发明提供有附图，这些附图为本发明揭露内容的一部分，其主要用以说明实施例，并可配合说明书的相关描述来解释实施例的运作原理，配合参考这些内容，本领域普通技术人员应能理解其他可能的实施方式以及本发明的优点，图中的组件并未按比例绘制，而类似的组件符号通常用来表示类似的组件。
根据本发明的实施例，提供了一种弧形阀板的自密封蝶阀。
现结合附图和具体实施方式对本发明进一步说明，如图1-4所示，根据本发明实施例的弧形阀板的自密封蝶阀，包括蝶阀体1，蝶阀体1的底端设置有底盘组件2，蝶阀体1的内部中端设置有自密封组件3，蝶阀体1的侧壁且在自密封组件3的侧边设置有转动组件4。
借助于上述方案，本发明具有自密封特性，杜绝了现有蝶阀的蝶板受力加大后发生渗漏的可能。
在一个实施例中，对于上述自密封组件3来说，通过自密封组件3包括设置在蝶阀体1内部中端的弧形蝶板主体301，弧形蝶板主体301的顶端且在蝶阀体1的内部侧壁上设置有弧形蝶板密封圈安装槽302，弧形蝶板密封圈安装槽302内设置有弧形蝶板密封圈303；弧形蝶板主体301的顶端设置有密封面304，且密封面304与弧形蝶板密封圈303的底端相抵靠，弧形蝶板主体301远离转动组件4的一端设置有转动轴305，且转动轴305远离弧形蝶板主体301的一端延伸至蝶阀体1的侧壁内，弧形蝶板主体301靠近转动组件4的一端设置有卡槽306，从而能够在蝶阀关闭时，能够依靠介质的压力将弧形蝶板主体301上的密封面304压向蝶阀体1内的弧形蝶板密封圈303，进而保证和增强本产品的密封能力，具有自密封特性。
在一个实施例中，对于上述转动组件4来说，通过转动组件4包括设置在蝶阀体1的侧壁上且与卡槽306相连接的转轴401，且转轴401远离卡槽306的一端延伸至蝶阀体1的外侧并与手柄402连接；转轴401的中端且在蝶阀体 1的侧壁内设置有两组转轴密封圈安装槽403，且转轴密封圈安装槽403内设置有转轴密封圈404，从而能够转动弧形蝶板主体301，且在转轴401处达到了密封效果。
在一个实施例中，对于上述底盘组件2来说，通过底盘组件2包括设置在蝶阀体1底端的底盘主体201，蝶阀体1的内部底端设置有底盘密封圈安装槽202，底盘密封圈安装槽202内设置有底盘密封圈203，且底盘主体201的顶端抵靠底盘密封圈203，从而使底盘处达到密封的效果。
为了方便理解本发明的上述技术方案，以下就本发明在实际过程中的工作原理或者操作方式进行详细说明。
在实际应用时，通过手柄402带动转轴401转动，转轴401通过卡槽306带动弧形蝶板主体301转动并使弧形蝶板主体301达到平行的状态，即图1所示，此时密封面304抵靠弧形蝶板密封圈303，由于弧形蝶板主体301的截面积大于出口的面积，当介质对弧形蝶板主体301施加压力后，使得弧形蝶板密封圈303的密封效果更好。
综上所述，借助于本发明的上述技术方案，通过设置自密封组件3，从而能够在蝶阀关闭时，能够依靠介质的压力将弧形蝶板主体301上的密封面304压向蝶阀体1内的弧形蝶板密封圈303，进而保证和增强本产品的密封能力，具有自密封特性，杜绝了现有蝶阀的蝶板受力加大后发生渗漏的可能，反而弧形蝶板主体301受力加大后加大了密封效果。通过设置转动组件4，从而能够转动弧形蝶板主体301；通过设置底盘密封圈203，从而使底盘处达到密封的效果。
在本发明中，除非另有明确的规定和限定，术语“安装”、“设置”、“连接”、“固定”、“旋接”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定，对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发 明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (6)

  1. 一种弧形阀板的自密封蝶阀，其特征在于，包括蝶阀体(1)，所述蝶阀体(1)的底端设置有底盘组件(2)，所述蝶阀体(1)的内部中端设置有自密封组件(3)，所述蝶阀体(1)的侧壁且在所述自密封组件(3)的侧边设置有转动组件(4)。
  2. 根据权利要求1所述的一种弧形阀板的自密封蝶阀，其特征在于，所述自密封组件(3)包括设置在所述蝶阀体(1)内部中端的弧形蝶板主体(301)，所述弧形蝶板主体(301)的顶端且在所述蝶阀体(1)的内部侧壁上设置有弧形蝶板密封圈安装槽(302)，所述弧形蝶板密封圈安装槽(302)内设置有弧形蝶板密封圈(303)。
  3. 根据权利要求2所述的一种弧形阀板的自密封蝶阀，其特征在于，所述弧形蝶板主体(301)的顶端设置有密封面(304)，且所述密封面(304)与所述弧形蝶板密封圈(303)的底端相抵靠，所述弧形蝶板主体(301)远离所述转动组件(4)的一端设置有转动轴(305)，且所述转动轴(305)远离所述弧形蝶板主体(301)的一端延伸至所述蝶阀体(1)的侧壁内，所述弧形蝶板主体(301)靠近所述转动组件(4)的一端设置有卡槽(306)。
  4. 根据权利要求3所述的一种弧形阀板的自密封蝶阀，其特征在于，所述转动组件(4)包括设置在所述蝶阀体(1)的侧壁上且与所述卡槽(306)相连接的转轴(401)，且所述转轴(401)远离所述卡槽(306)的一端延伸至所述蝶阀体(1)的外侧并与手柄(402)连接。
  5. 根据权利要求4所述的一种弧形阀板的自密封蝶阀，其特征在于，所述转轴(401)的中端且在所述蝶阀体(1)的侧壁内设置有两组转轴密封圈安装槽(403)，且所述转轴密封圈安装槽(403)内设置有转轴密封圈(404)。
  6. 根据权利要求1或5所述的一种弧形阀板的自密封蝶阀，其特征在于，所述底盘组件(2)包括设置在所述蝶阀体(1)底端的底盘主体(201)，所述蝶阀体(1)的内部底端设置有底盘密封圈安装槽(202)，所述底盘密封圈安装槽(202)内设置有底盘密封圈(203)，且所述底盘主体(201)的顶端抵靠所述底盘密封圈(203)。
PCT/CN2021/080902 2020-11-30 2021-03-16 一种弧形阀板的自密封蝶阀 WO2022110572A1 (zh)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4241895A (en) * 1978-04-26 1980-12-30 Fmc Corporation Annular resilient metal valve seat
CN2075733U (zh) * 1990-09-04 1991-04-24 中国船舶工业总公司第七研究院第七○四研究所 自动密封蝶阀
CN201836410U (zh) * 2010-10-21 2011-05-18 宁波一机阀门制造有限公司 一种无柱销双偏心蝶阀
CN106764008A (zh) * 2016-12-28 2017-05-31 湖南泵阀制造有限公司 双向自密封阀门
CN206257290U (zh) * 2016-12-19 2017-06-16 铁岭阀门有限公司 压力自动密封蝶阀

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4241895A (en) * 1978-04-26 1980-12-30 Fmc Corporation Annular resilient metal valve seat
CN2075733U (zh) * 1990-09-04 1991-04-24 中国船舶工业总公司第七研究院第七○四研究所 自动密封蝶阀
CN201836410U (zh) * 2010-10-21 2011-05-18 宁波一机阀门制造有限公司 一种无柱销双偏心蝶阀
CN206257290U (zh) * 2016-12-19 2017-06-16 铁岭阀门有限公司 压力自动密封蝶阀
CN106764008A (zh) * 2016-12-28 2017-05-31 湖南泵阀制造有限公司 双向自密封阀门

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