WO2023155396A1 - 一种具有缓闭功能的旋启式止回阀 - Google Patents

一种具有缓闭功能的旋启式止回阀 Download PDF

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Publication number
WO2023155396A1
WO2023155396A1 PCT/CN2022/112401 CN2022112401W WO2023155396A1 WO 2023155396 A1 WO2023155396 A1 WO 2023155396A1 CN 2022112401 W CN2022112401 W CN 2022112401W WO 2023155396 A1 WO2023155396 A1 WO 2023155396A1
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Prior art keywords
valve
swing check
check valve
elastic
rocker
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PCT/CN2022/112401
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English (en)
French (fr)
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林彬
崔国栋
潘宏
夏朝晖
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中冶南方工程技术有限公司
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Publication of WO2023155396A1 publication Critical patent/WO2023155396A1/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
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift 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
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise

Definitions

  • the utility model relates to the field of pipeline valves, in particular to a swing check valve with slow closing function.
  • the swing check valve is a valve that prevents the medium from flowing back in the pipeline.
  • the opening and closing parts of the valve are pushed to open by the pressure of the medium flow and closed by their own gravity, so they have the function of preventing the medium from flowing back.
  • the swing check valve is commonly used in oxygen pipelines.
  • the valve disc When the valve is closed, the valve disc is turned downward around the horizontal pin axis by gravity, and the valve disc will produce a large turning speed, which will cause the valve disc to be in contact with the horizontal pin.
  • the sealing surface between the valve bodies is easy to be scratched and will generate a lot of noise, which will affect the service life and effect of the swing check valve.
  • the utility model aims to provide a swing check valve with slow closing function.
  • a swing check valve with slow closing function comprising a swing check valve body, the swing check valve body includes a valve body, a valve seat, a valve disc, a rocker and a valve cover, the valve disc passes through
  • the rocker is hingedly connected in the valve cavity of the valve body, and can cooperate with the valve seat in the valve cavity to seal, and also includes an elastic sliding device for slowly closing the valve flap, and the elastic sliding device includes a connecting frame and an elastic member
  • the rocker is provided with a sliding groove on the back of the connecting frame, a clip is movably installed in the sliding groove, and the clip can be moved in the sliding groove toward the hinged side of the rocker and away from the hinged side. Sliding, one end of the elastic member is connected with the connecting frame, and the other end is connected with the clamping member.
  • the elastic member produces damping to prevent the valve flap from closing.
  • the elastic member when the valve clack is in the fully open position, the elastic member is in the original length state, and when the valve clack is in the fully closed position, the stretched length of the elastic member is within its elastic limit.
  • the elastic member is a steel spring.
  • the rocker has two sliding grooves, each sliding groove is provided with a clamp, and the elastic parts of the two sets of elastic sliding devices are connected with the two sliding grooves respectively.
  • a card is connected.
  • valve body also has a flap stopper extending into the valve chamber, the flap stopper is provided with an inclination towards the surface of the flap, and the inclination angle of the flap stopper is the same as The inclination angles of the valve disc hitting the valve disc limit device are consistent.
  • the swing check valve is a single disc check valve.
  • the swing check valve with slow closing function provided by the utility model has the following advantages: the swing check valve provided by the utility model slows down the closing speed of the disc through an elastic sliding device, so as to It can reduce pipeline vibration, reduce noise, and reduce damage to equipment, pipelines and valves.
  • Fig. 1 shows a schematic view of the swing check valve of the present invention in a closed state.
  • Fig. 2 shows a schematic view of the swing check valve of the present invention in an open state.
  • this embodiment provides a swing check valve with slow closing function, including a swing check valve body 1, the swing check valve body 1 consists of a valve body 11. Valve seat 12, valve disc 13, rocker 14, valve cover 15 are composed.
  • the valve body 11 has a valve cavity 110 disposed along its axial direction, and the two axial ends of the valve cavity 110 are the inlet and the outlet of the valve body 11 respectively.
  • the top of the valve cavity 110 has an assembly port 111, through which the valve seat 12, the valve disc 13 and the rocker 14 are installed into the valve cavity 110, wherein the valve seat 12 is a ring structure, and the valve body 11 has a function in the valve cavity 110.
  • the valve seat 12 On the stepped part of the fixed valve seat 12, the valve seat 12 is fixed on the stepped part and sealed with the valve body.
  • One end of the rocker 14 is hinged in the valve chamber through a pin 141, and the other end of the rocker 14 is connected through a nut 142.
  • valve disc 13 It is fixedly connected with the valve disc 13 (the valve disc 13 has a screw part 131 matched with the nut 142 ), and the valve disc 13 has a sealing surface facing the valve seat 12 and sealingly fitted with the valve seat.
  • the swing check valve is installed on the pipeline. When the pipeline is in the ventilation state, the medium in the flow path in the pipeline will push the valve disc 13 away, and the swing check valve is in the open state at this time; when the oxygen pipeline is in the In the air-closed state, the valve disc 13 falls under the action of gravity and seals against the valve seat 12, thereby sealing the inlet of the valve cavity 110 and preventing the medium from flowing back.
  • the valve cover 15 is installed on the assembly port 111 on the top of the valve body 11 through bolts and nuts, and seals the assembly port 111.
  • the sealing between the valve cover 15 and the valve body 11 can be realized by a sealing gasket 151 to prevent the medium from The fitting port 111 leaks out.
  • the structure of the above-mentioned swing check valve body 1 is roughly the same as that of the swing check valve in the prior art.
  • the difference between it and the swing check valve in the prior art is that it also has a slow closing function.
  • the slow closing function is realized by an elastic sliding device.
  • the elastic sliding device includes a connecting frame 16 extending into the valve chamber 110 on the valve body 11 and located above the hinge point of the rocker 14, and one end is fixed on the connecting piece, and the other end is fixed on the rocker.
  • the steel spring 17 is used as an example for illustration.
  • the connecting frame 16 has a fixed ring 161.
  • the upper end of the steel spring 17 is installed on the fixed ring 161.
  • the rocking bar 14 is provided with a slide groove 143 towards the back of the connecting frame 16, and the slide groove 143 has a clip 18 that is movably installed in the groove, and the clip 18 can be hinged toward the rocker 14 in the slide groove 143.
  • the side and away from the hinged side slide, and the lower end of the steel spring 17 is fixedly connected with the clip 18.
  • the steel spring 17 is just in the original long state, so as to ensure that the working parameters at the beginning are consistent with the original ones.
  • the elongated length of the steel spring 17 It is within the elastic limit of the spring to avoid elastic failure of the steel spring 17.
  • two sets of elastic sliding devices are provided on the valve to prevent damage to the slow closing function of the valve after one of the steel springs in the elastic sliding device fails.
  • the valve body 11 also has a disc stopper 19 extending into the valve cavity 110, the disc stopper 19 is provided with a certain inclination towards the face of the disc, when the valve is opened, The inclination angle is just consistent with the inclination angle at which the valve clack 13 collides with the valve clack limiter 19, so as to reduce the impact of the valve clack on it.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)

Abstract

一种具有缓闭功能的旋启式止回阀，包括旋启式止回阀本体(1)，该旋启式止回阀本体(1)包括阀体(11)、阀座(12)、阀瓣(13)、摇杆(14)和阀盖(15)，还包括让阀瓣(13)缓闭的弹性滑动装置，弹性滑动装置包括连接架(16)和弹性件(17)，摇杆(14)朝向连接架(16)的背面上设有滑动凹槽(143)，滑动凹槽(143)内活动安装有一卡件(18)，卡件(18)在滑动凹槽(143)内能够沿朝向摇杆(14)铰接侧和远离铰接侧方向滑动，弹性件(17)的一端与连接架(16)相连接，另一端与卡件(18)相连接，在阀瓣(13)关闭时，弹性件(17)对阀瓣(13)产生阻碍其关闭的阻尼，以减缓阀瓣(13)关闭的速度。

Description

一种具有缓闭功能的旋启式止回阀 技术领域
本实用新型涉及管道阀门领域，具体是涉及一种具有缓闭功能的旋启式止回阀。
背景技术
旋启式止回阀是一种防止管道中的介质倒流的阀门，阀门的启闭件依靠介质流动的压力推动开启和自身的重力关闭，因此具有防止介质倒流的功能。目前在氧气管道中比较常使用的是旋启式止回阀，该种阀门在关闭时阀瓣受重力作用绕横销轴向下翻转，阀瓣会产生较大的翻转速度，导致阀瓣与阀体之间的密封面容易被划伤且会产生较大的噪声，影响旋启式止回阀的使用寿命和效果。
实用新型内容
本实用新型旨在提供一种具有缓闭功能的旋启式止回阀。
具体方案如下：
一种具有缓闭功能的旋启式止回阀，包括旋启式止回阀本体，该旋启式止回阀本体包括阀体、阀座、阀瓣、摇杆和阀盖，阀瓣通过摇杆铰接连接在阀体的阀腔内，并且能够与阀腔内的阀座相配合密封，还包括让所述阀瓣缓闭的弹性滑动装置，所述弹性滑动装置包括连接架和弹性件，所述摇杆朝向连接架的背面上设有滑动凹槽，所述滑动凹槽内活动安装有一卡件，所述卡件在滑动凹槽内能够沿朝向摇杆铰接侧和远离铰接侧方向滑动，所述弹性件的一端与所述连接架相连接，另一端与所述卡件相连接，在所述阀瓣关闭时，所述弹性件对所述阀瓣产生阻碍其关闭的阻尼。
进一步的，在所述阀瓣处于完全打开的位置时，所述弹性件处于原长状态，在所述阀瓣处于完全关闭时，所述弹性件的拉伸长度处于其弹性限度内。
进一步的，所述弹性件与所述连接架之间采用能够拆卸的活动连接。
进一步的，所述弹性件为钢制弹簧。
进一步的，其包括两套弹性滑动装置，所述摇杆上具有两滑动凹槽，每一滑动凹槽内都设有一卡件，两套弹性滑动装置的弹性件分别与两滑动凹槽内的一卡件相连接。
进一步的，所述阀体上还具有延伸至阀腔内的阀瓣限位装置，所述阀瓣限位装置朝向阀瓣的面设置有倾斜度，所述阀瓣限位装置的倾斜角度与阀瓣撞击阀瓣限位装置的倾斜角一致。
进一步的，所述旋启式止回阀为单瓣式止回阀。
本实用新型提供的具有缓闭功能的旋启式止回阀与现有技术相比较具有以下优点：本实用新型提供的旋启式止回阀通过弹性滑动装置来减缓阀瓣关闭的速度，以达到了减轻管路振动，降低噪音，降低了对设备、管线以及阀的损坏的作用。
附图说明
图1示出了本实用新型的旋启式止回阀处于关闭状态下的示意图。
图2示出了本实用新型的旋启式止回阀处于开启状态下的示意图。
具体实施方式
为进一步说明各实施例，本实用新型提供有附图。这些附图为本实用新型揭露内容的一部分，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实用新型的优点。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。
现结合附图和具体实施方式对本实用新型进一步说明。
如图1和图2所示，本实施例提供了一种具有缓闭功能的旋启式止回阀，包括旋启式止回阀本体1，该旋启式止回阀本体1由阀体11、阀座12、阀瓣13、摇杆14、阀盖15组成。
阀体11具有沿其轴向设置的阀腔110，阀腔110的轴向两端分别为该阀体11的入口和出口。阀腔110的顶部具有一装配口111，阀座12、阀瓣13和摇杆14通过装配口111安装至阀腔110内，其中阀座12为环形结构，阀体11在阀腔110具有用于固定阀座12的台阶部，阀座12安装在台阶部上固定并且与阀体相密封配合，摇杆14的一端通过销轴141铰接在阀腔内，摇杆14的另一端通过螺母142与阀瓣13相固定连接(阀瓣13上具有与螺母142相匹配设置的螺杆部131)，阀瓣13具有朝向阀座12并且与阀座相密封配合的密封面。该旋启式止回阀安装于管道上，当管道处于通气状态下，管道内流道的介质会将阀瓣13推开，此时该旋启式止回阀处于开启状态；当氧气管道处于闭气状态下，阀瓣13在重力的作用下下落并与阀座12密封抵触，从而将阀腔110的入口密封封堵，并且防止介质的倒流。
阀盖15通过螺栓螺母安装于阀体11的顶部的装配口111上，并且将装配口111密封，阀盖15与阀体11之间的密封可通过密封垫片151来实现，以防止介质从装配口111泄露出。
上述的旋启式止回阀本体1的结构与现有技术中旋启式止回阀的结构大致相同，其与现有技术中的旋启式止回阀的差别在于还具有缓闭功能，该缓闭功能由弹性滑动装置来实现，弹性滑动装置包括阀体11上延伸至阀腔110内且位于摇杆14铰接点上方的连接架16以及一端固定在连接件上、另一端固定在摇杆14上的弹性件。本实施例中以弹性件是钢制弹簧17作为示例来进行说明，连接架16上具有固定环161，钢制弹簧17的上端安装在固定环161上，钢制弹 簧17与固定环161之间优选采用可拆卸的活连接，让阀门处于非工作状态时二者可处于断开状态，当阀门投入生产使用时再将其进行连接，以避免弹簧长期拉伸造成功能损坏，增加阀门的使用寿命。
摇杆14朝向连接架16的背面上设有滑动凹槽143，滑动凹槽143内具有活动安装在凹槽内的卡件18，卡件18在滑动凹槽143内能够沿朝向摇杆14铰接侧和远离铰接侧方向滑动，钢制弹簧17的下端与卡件18相固定连接。其中，优选的，在阀门的阀瓣13完全打开时，钢制弹簧17恰好处于原长状态，保证开始时的工作参数与原有保持一致，在阀门关闭时，钢制弹簧17的拉伸长度处于弹簧弹性限度内，以避免钢制弹簧17的弹性失效。
在阀门开启时，钢制弹簧17斜向上拉动摇杆14，阀瓣13快速的向上转动同时卡件18向销轴141侧移动，在阀门完全开启时，钢制弹簧17恰好恢复至原长状态，保证开始时的工作参数与原有保持一致；当管道内介质断流时，重力作用下摇杆14将向下转动，初始时弹簧处于原长状态，摇杆14具有较大的向下加速度，此时卡件18受向心作用的影响将向螺母侧偏移，钢制弹簧17随之被拉长而给摇杆一斜向上的拉力，随着阀门闭合程度增大，钢制弹簧17的拉伸长度也增大，给摇杆14的拉力也在增大，对于阀门闭合的阻尼作用加大，有效地降低阀瓣13撞击阀座12的速度，实现了缓慢关闭阀门的目的。
作为实施方式之一，阀门上设有两套弹性滑动装置，以防止弹性滑动装置中的其中一根钢制弹簧失效后造成阀门缓闭功能损坏。
作为实施方式之一，阀体11上还具有延伸至阀腔110内的阀瓣限位装置19，该阀瓣限位装置19朝向阀瓣的面设置有一定的倾斜度，当阀门开启时，倾斜角度恰好跟与阀瓣13撞击阀瓣限位装置19的倾斜角一致，以降低阀瓣对其造成的冲击作用。
尽管结合优选实施方案具体展示和介绍了本实用新型，但所属领域的技术人员应该明白，在不脱离所附权利要求书所限定的本实用新型的精神和范围内，在形式上和细节上可以对本实用新型做出各种变化，均为本实用新型的保护范围。

Claims (7)

  1. 一种具有缓闭功能的旋启式止回阀，包括旋启式止回阀本体，该旋启式止回阀本体包括阀体、阀座、阀瓣、摇杆和阀盖，阀瓣通过摇杆铰接连接在阀体的阀腔内，并且能够与阀腔内的阀座相配合密封，其特征在于：还包括让所述阀瓣缓闭的弹性滑动装置，所述弹性滑动装置包括连接架和弹性件，所述摇杆朝向连接架的背面上设有滑动凹槽，所述滑动凹槽内活动安装有一卡件，所述卡件在滑动凹槽内能够沿朝向摇杆铰接侧和远离铰接侧方向滑动，所述弹性件的一端与所述连接架相连接，另一端与所述卡件相连接，在所述阀瓣关闭时，所述弹性件对所述阀瓣产生阻碍其关闭的阻尼。
  2. 根据权利要求1所述的旋启式止回阀，其特征在于：在所述阀瓣处于完全打开的位置时，所述弹性件处于原长状态，在所述阀瓣处于完全关闭时，所述弹性件的拉伸长度处于其弹性限度内。
  3. 根据权利要求1所述的旋启式止回阀，其特征在于：所述弹性件与所述连接架之间采用能够拆卸的活动连接。
  4. 根据权利要求1所述的旋启式止回阀，其特征在于：所述弹性件为钢制弹簧。
  5. 根据权利要求1所述的旋启式止回阀，其特征在于：其包括两套弹性滑动装置，所述摇杆上具有两滑动凹槽，每一滑动凹槽内都设有一卡件，两套弹性滑动装置的弹性件分别与两滑动凹槽内的一卡件相连接。
  6. 根据权利要求1所述的旋启式止回阀，其特征在于：所述阀体上还具有延伸至阀腔内的阀瓣限位装置，所述阀瓣限位装置朝向阀瓣的面设置有倾斜度，所述阀瓣限位装置的倾斜角度与阀瓣撞击阀瓣限位装置的倾斜角一致。
  7. 根据权利要求1所述的旋启式止回阀，其特征在于：所述旋启式止回阀为单瓣式止回阀。
PCT/CN2022/112401 2022-02-16 2022-08-15 一种具有缓闭功能的旋启式止回阀 WO2023155396A1 (zh)

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CN202220316760.3U CN217108345U (zh) 2022-02-16 2022-02-16 一种具有缓闭功能的旋启式止回阀
CN202220316760.3 2022-02-16

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