WO2013177772A1 - 一种阀用开关指示装置 - Google Patents

一种阀用开关指示装置 Download PDF

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Publication number
WO2013177772A1
WO2013177772A1 PCT/CN2012/076311 CN2012076311W WO2013177772A1 WO 2013177772 A1 WO2013177772 A1 WO 2013177772A1 CN 2012076311 W CN2012076311 W CN 2012076311W WO 2013177772 A1 WO2013177772 A1 WO 2013177772A1
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WO
WIPO (PCT)
Prior art keywords
valve
marking
sleeve
hand wheel
disposed
Prior art date
Application number
PCT/CN2012/076311
Other languages
English (en)
French (fr)
Inventor
江光双
朱新炎
王建表
钱金明
赵明祥
Original Assignee
浙江盾安阀门有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 浙江盾安阀门有限公司 filed Critical 浙江盾安阀门有限公司
Priority to CN201280073599.0A priority Critical patent/CN104520623B/zh
Priority to PCT/CN2012/076311 priority patent/WO2013177772A1/zh
Publication of WO2013177772A1 publication Critical patent/WO2013177772A1/zh

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Classifications

    • 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
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0008—Mechanical means
    • 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
    • F16K1/02—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 screw-spindle
    • F16K1/04—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 screw-spindle with a cut-off member rigid with the spindle, e.g. main 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
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0058—Optical means, e.g. light transmission, observation ports

Definitions

  • the present invention relates to a valve structure, and more particularly to a valve switch indicating device.
  • valve switches generally have only a switch direction indication and no switch status indication.
  • Some existing valve switch indicating devices involve electromechanical structures.
  • the utility model patent issued by the State Intellectual Property Office of China on April 29, 2009 is No. 201228812.
  • the patent name is “Switch Indicating Valve”, using valves.
  • the opening degree display device and the signal collector for providing signals to the valve opening degree display device are complicated and have low reliability.
  • Another example is a utility model patent issued by the State Intellectual Property Office of China on December 1, 2010, with the announcement number 201661757.
  • the patent name is “Devices that directly indicate the state of the switch on the valve handwheel”, including a rotatable a hand wheel, a fixed planar spiral groove body is disposed below the hand wheel, and the upper surface of the planar spiral groove body is engraved with a plurality of spirals equally spaced from the inside to the outside, and the number of turns of the spiral line is at least equal to The number of rotations of the hand wheel when the valve is closed to fully open; the hand wheel is radially provided with a pointer groove for defining the slider portion of the pointer; the bottom of the pointer is opposite to the spiral of the planar spiral groove body Inline.
  • the sliding path of the pointer is controlled by the shape of the pointer groove, and under the action of the planar spiral groove under the rotation of the hand wheel, the pointer slides linearly in the pointer groove, and the utility model can intuitively display the timely working state of the valve.
  • the structure is too complicated, the production cost is relatively high, and the maintenance cost is relatively high, and the manufacturer is not widely used.
  • the cover rotates with the hand wheel, indicating that the pin rod drives the screw sleeve to rotate, so that the screw sleeve moves up and down, the screw sleeve drives the indication pin rod to move up and down, and the valve opening condition indication is completed by indicating the position of the pin rod relative to the slot hole.
  • the pin is positioned in the collar by the friction plate, and the collar is fixed on the screw sleeve.
  • the parts are used too much and small, and the production and assembly are troublesome, which inevitably increases the production cost.
  • many valves will stagnate after installation and operation for a period of time, and may not be activated. At this time, it is impossible to judge the switch state of the valve, which is likely to cause a safety accident, and none of the above utility model patents mentions this problem and solves it. Way.
  • the problem to be solved by the present invention is to provide a valve indicating device for a valve, which adopts a simple mechanical structure to intuitively judge the switching state of the valve, has low production cost and maintenance cost, and can effectively prevent stagnation, especially in the outdoors. Low temperature area, convenient for opening and closing valves, safe and reliable.
  • a valve switch indicating device comprising a valve cover and a hand wheel disposed on an upper portion of the valve cover, wherein: the hand wheel is provided with a marking sleeve, The upper side wall of the upper part of the bonnet is circumferentially provided with a marking rule.
  • the lower end surface of the marking sleeve is not lower than the upper edge of the marking ruler, and the lower end surface of the marking sleeve is in the fully closed state of the valve.
  • a connection structure between the hand wheel and the marking sleeve is provided between the hand wheel and the marking sleeve, and the marking sleeve follows the hand wheel to move up and down.
  • the valve cover and the marking sleeve are arranged to restrict the circumferential rotation of the marking sleeve. Limit structure.
  • the connecting structure includes an external thread disposed on the hand wheel and an internal thread disposed in the marking sleeve to cooperate with the external thread, and the rotation of the external thread and the internal thread and the rotation of the hand wheel when the valve is closed in contrast.
  • the limiting structure includes a limiting block and a limiting slot disposed between the valve cover and the marking sleeve, and the limiting block is stuck in the limiting slot.
  • the limiting block is disposed on the valve cover and located above the marking ruler, and the limiting slot is disposed on the standard Set on the cover. Prevent the limit structure from coming off.
  • At least one groove is axially disposed in the marking sleeve, and at least one end of the groove is located on the internal thread. Discharge the liquid between the handwheel and the bonnet, try to avoid stagnant water, and if it freezes, it will break the ice well.
  • the marking ruler is continuously arranged on the outer side surface of the upper part of the valve cover.
  • the process is simple and easy to process.
  • the marker spacer ring is disposed on an outer side surface of the upper portion of the valve cover. Cost savings, the general gauge can be brushed on the bonnet with colored paint. To enhance the firmness of the paint, a rough surface can be placed at the marker position.
  • the connecting structure comprises two shaft retaining rings disposed on the hand wheel to axially position the marking sleeve on the hand wheel, and the shaft retaining rings are respectively disposed on the upper and lower sides of the marking sleeve on the hand wheel. Partially.
  • the connecting structure comprises a stop pin disposed on the hand wheel for axially positioning the marking sleeve on the hand wheel and a radial step, wherein the stop pin and the radial step are respectively disposed on the hand wheel and are located on the marking sleeve On the upper and lower sides.
  • the limiting structure includes a polygonal hole disposed in the marking sleeve and a polygonal cylinder disposed on the valve cover and mating with the polygonal hole, and the polygonal cylinder is retained to extend into the polygonal hole.
  • the invention has the following advantages:
  • the simple mechanical structure is used to intuitively judge the switching state of the valve, the production cost and the maintenance cost are low, and the liquid between the hand wheel and the valve cover can be discharged, if outdoors
  • the ice-breaking effect can also be achieved, effectively preventing the occurrence of stagnation, facilitating the smooth switching operation of the valve, and opening or closing the valve in time, which is safe and reliable.
  • 1 is a schematic structural view of an embodiment of the present invention
  • 2 is a schematic structural view of a marker sleeve
  • Figure 3 is a schematic view of the structure of the valve cover
  • Figure 4 is a schematic view showing the relative positions of the marker sleeve and the marker on the valve cover when the valve is fully opened;
  • Figure 5 is a schematic view of the relative position of the marker sleeve on the valve cover and the marker on the valve cover when the valve is fully closed.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • a valve switch indicating device includes a valve cover 1 and a hand wheel 2 disposed on an upper portion of the valve cover, and the hand wheel is provided with a marking sleeve 3,
  • the upper side wall of the upper part of the bonnet is circumferentially provided with a marking rule 4.
  • the lower end surface of the marking sleeve is not lower than the upper edge of the marking ruler, and in the fully closed state of the valve, the lower part of the marking sleeve The end surface is not higher than the lower edge of the marking rule.
  • the optimal structure here is: in the fully open state of the valve, the lower end surface of the marking sleeve is flush with the upper edge of the marking ruler, and in the valve fully closed state, the marking The lower end of the sleeve is flush with the lower edge of the marker, that is, the stroke of the marker sleeve moving up and down is equal to the width of the marker.
  • a connecting structure is provided between the hand wheel and the marking sleeve for moving the marking sleeve up and down following the hand wheel, and a limiting structure for restricting the circumferential rotation of the marking sleeve is arranged between the valve cover and the marking sleeve.
  • the connecting structure includes an external thread 21 disposed on the hand wheel and an internal thread 31 disposed in the marking sleeve to cooperate with the external thread.
  • the external thread and the internal thread are rotated and tightened when the valve is closed.
  • the hand wheel has the opposite direction of rotation. Involving the problem of the direction of rotation, in fact, in the industry practice, the right hand rotates the hand wheel to tighten the direction in which the hand wheel closes the valve, so the direction of rotation of the external thread and the internal thread is generally left-handed. Of course, there are also special cases. When the left-hand hand wheel is in the direction of closing the valve, the external thread and the internal thread are set to the right-hand thread.
  • the limiting structure includes a limiting block 11 and a limiting slot 32 disposed between the valve cover and the marking sleeve, and the limiting block is stuck in the limiting slot.
  • the limiting block is disposed on the valve cover and above the marking ruler, and the limiting groove is disposed on the marking sleeve.
  • the limiting block can also be arranged on the marking sleeve, and the limiting slot is arranged on the valve cover and located Below the marker, this ensures that the marker sleeve will not disengage when the marker sleeve moves up and down.
  • At least one groove 33 is axially disposed in the marking sleeve, and at least one end of the groove is located on the internal thread.
  • the grooves are provided in total and are evenly distributed on the internal threads in the marking sleeve, and the liquid can be discharged through the grooves. If the ice is frozen in the outdoor or low temperature regions, the grooves can also achieve the ice breaking effect. It is convenient for the valve to smoothly switch and open or close the valve in time.
  • the marking ruler is continuously ringed on the outer side surface of the upper part of the valve cover.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the structure of the first embodiment is different from that of the first embodiment.
  • the connecting structure includes two shaft retaining rings disposed on the hand wheel to axially position the marking sleeve on the hand wheel, and the shaft retaining ring is respectively disposed on the hand.
  • the wheel is located on the upper and lower sides of the marker sleeve.
  • the limit structure adopts the same structure as that of the first embodiment.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the structure of the first embodiment is different from that of the first embodiment in that: the connecting structure comprises a stop pin and a radial step disposed on the hand wheel for axially positioning the marker sleeve on the hand wheel, the stop pin and the radial step They are respectively arranged on the hand wheel on the upper and lower sides of the marking sleeve.
  • the stop pin can be inserted radially into the handwheel or replaced with a screw or bolt. Considering the installation problem, the radial step is generally down and the stop pin is on.
  • the limit structure adopts the same structure as that of the first embodiment.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the structure of the first embodiment is different from that of the first embodiment: the limiting structure includes a polygonal hole disposed in the marking sleeve and a polygonal cylinder disposed on the valve cover and mating with the polygonal hole, the polygonal cylinder is maintained Extend into the polygonal hole.
  • the connection structure may be any one of the connection structures used in the first embodiment, the second embodiment or the third embodiment.
  • the connecting structure of the present invention can also be realized by a shaft retaining ring and a retaining pin, or a shaft retaining ring and a radial step can be realized.
  • the target The gauge can also be placed on the outer side of the upper part of the bonnet.
  • the marker can be brushed on the bonnet with colored paint, which saves the paint and reduces the cost. In order to enhance the firmness of the paint, it can be set at the marker position. Rough surface.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Indication Of The Valve Opening Or Closing Status (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

一种阀用开关指示装置包括阀盖（1）和设在阀盖（1）上部的手轮（2）。手轮（2）上设有标记套（3）。阀盖（1）上部外侧壁上周向设置有标记尺（4）。在阀门全开状态下，标记套（3）的下端面不低于标记尺（4）的上沿，在阀门全关的状态下，标记套（3）的下端面不高于标记尺（4）的下沿。手轮（2）与标记套（3）之间设有使标记套（3）跟随上下移动的连接结构。阀盖（1）与标记套之间设有限制标记套（3）周向转动的限位结构。此阀门能将手轮（2）与阀盖（1）之间的液体排放掉，若在户外或低温区域结冰时，也能实现破冰效果。

Description

一种阀用开关指示装置
技术领域
本发明涉及阀门结构， 特别是一种阀用开关指示装置。
背景技术
目前的阀门开关普遍只有开关方向指示而无开关状态指示。 有些现有的阀 用开关指示装置涉及机电结构， 例如中国国家知识产权局在 2009年 04月 29日 授权公告的公告号为 201228812 的实用新型专利， 专利名称为 《开关指示式阀 门》， 采用阀门开启度显示装置和给阀门开启度显示装置提供信号的信号采集 器， 较为复杂， 而且可靠性不高。又如一个由中国国家知识产权局在 2010年 12 月 1 日授权公告的公告号为 201661757的实用新型专利， 专利名称为 《在阀门 手轮上直接指示开关状态的装置》， 包含一可旋转的手轮， 所述的手轮的下方设 有固定的平面螺旋槽体， 该平面螺旋槽体的上表面刻有若干圈由内向外等间距 的螺旋线， 所述的螺旋线的圈数至少等于阀门从关闭到完全打开时手轮旋转圈 数;所述的手轮上沿径向开设有一指针槽， 用于限定指针的滑块部;所述的指针 的底部抵于平面螺旋槽体的螺旋线内。 该指针的滑动路径受控于指针槽形状， 并在手轮的转动下在平面螺旋槽的作用下， 指针在指针槽内作直线往复滑动， 该实用新型虽然能够直观的显示阀门适时工作状态， 但结构过于复杂， 生产成 本比较高， 而且维护成本也比较高， 不利用厂家大范围推广使用。
此外， 还有一个名称为 《磁力阀门开关行程指示装置》 的实用新型专利， 由中国国家知识产权局在 2006年 6月 28日授权公告， 公告号为 2791418， 在该 专利中公开了这样的结构： 在磁力阀门的手轮上固定连接设有一个罩壳， 在罩 壳中设有一个螺套， 螺套通过内螺紋与磁力阀门的隔离套的固定螺栓的上端延 伸设置的螺杆配合连接， 在罩壳侧壁纵向上开设有槽孔， 在槽孔中与螺套固定 连接有一个指示销杆。 当手轮转动时， 罩壳随手轮转动， 指示销杆带动螺套转 动， 使螺套上下移动， 螺套带动指示销杆上下移动， 通过指示销杆相对槽孔的 位置完成对阀门开启状况指示。 这个专利中指示销杆通过摩擦片定位在套环中， 套环又固定在螺套上， 使用零件过多且小， 生产和装配都比较麻烦， 无形中增 加生产成本。 而很多阀门在安装运行一段时间后会出现凝滞现象， 可能会开启 不动， 此时无法判断阀门的开关状态， 容易引发安全事故， 而上述几个实用新 型专利中均没有提及这个问题以及解决的办法。
发明内容
本发明所要解决的问题就是提供一种阀用开关指示装置， 采用简单的机械 结构实现直观判断阀门的开关状态， 生产成本和维护成本低， 而且还能有效防 止凝滞现象出现， 特别是在户外及低温区域， 方便开关阀门， 安全可靠。
为了解决上述技术问题， 本发明采用如下技术方案： 一种阀用开关指示装 置， 包括阀盖和设在阀盖上部的手轮， 其特征在于： 所述手轮上设有标记套， 所述阀盖上部外侧壁上周向设置有标记尺， 在阀门全开状态下， 所述标记套的 下端面不低于标记尺的上沿， 在阀门全关状态下， 所述标记套的下端面不高于 标记尺的下沿， 所述手轮与标记套之间设有使标记套跟随手轮上下移动的连接 结构， 所述阀盖与标记套之间设有限制标记套周向转动的限位结构。
进一步的， 所述连接结构包括设在手轮上的外螺紋和设在标记套中与外螺 紋配合的内螺紋， 所述外螺紋和内螺紋的旋向与关闭阀门时拧紧手轮的旋向相 反。
进一步的， 所述限位结构包括设在阀盖和标记套之间的限位块和限位槽， 所述限位块卡在限位槽中。
进一步的， 所述限位块设在阀盖上且位于标记尺上方， 所述限位槽设在标 记套上。 防止限位结构脱离。
进一步的， 所述标记套中轴向设有至少一个凹槽， 所述凹槽上至少有一端 位于所述内螺紋上。 排放手轮与阀盖之间的液体， 尽量避免积水结冰， 如果结 冰也能很好地破冰。
进一步的， 所述标记尺连续环设在阀盖上部外侧面上。 工艺简单， 加工方 便。
进一步的， 所述标记尺间隔环设在阀盖上部外侧面上。 节约成本， 一般标 记尺用有色涂料刷在阀盖上即可， 为了增强涂料的牢固度， 可以在标记尺位置 设置粗糙面。
进一步的， 所述连接结构包括设在手轮上将标记套轴向定位在手轮上的两 个轴用挡圈， 所述轴用挡圈分别设在手轮上位于标记套上下两侧的部分上。
进一步的， 所述连接结构包括设在手轮上将标记套轴向定位在手轮上的一 个挡销和一个径向台阶， 所述挡销和径向台阶分别设在手轮上位于标记套上下 两侧的部分上。
进一步的， 所述限位结构包括设在标记套中的多边形孔和设在阀盖上的与 所述多边形孔配合的多边形柱体， 所述多边形柱体保持伸入多边形孔中。
采用上述技术方案后， 本发明具有如下优点： 采用简单的机械结构实现直 观判断阀门的开关状态， 生产成本和维护成本低， 而且能够将手轮与阀盖之间 的液体排放掉， 若在户外或低温区域结冰时， 也能实现破冰效果， 有效防止凝 滞现象出现， 方便阀门顺利开关动作， 及时打开或关闭阀门， 安全可靠。
附图说明
下面结合附图对本发明作进一步说明：
图 1为本发明一种实施例的结构示意图； 图 2为标记套的结构示意图；
图 3为阀盖的结构示意图；
图 4为阀门全开时标记套与阀盖上标记尺的相对位置示意图；
图 5为阀门全关时标记套与阀盖上标记尺的相对位置示意图。
具体实施方式
实施例一：
如图 1至 3所示本发明一种实施例， 一种阀用开关指示装置， 包括阀盖 1 和设在阀盖上部的手轮 2， 所述手轮上设有标记套 3， 所述阀盖上部外侧壁上周 向设置有标记尺 4， 在阀门全开状态下， 所述标记套的下端面不低于标记尺的上 沿， 在阀门全关状态下， 所述标记套的下端面不高于标记尺的下沿， 这里最优 的结构为： 在阀门全开状态下， 所述标记套的下端面与标记尺的上沿平齐， 在 阀门全关状态下， 所述标记套的下端面与标记尺的下沿平齐， 也就是标记套上 下移动的行程与标记尺的宽度相等。 所述手轮与标记套之间设有使标记套跟随 手轮上下移动的连接结构， 所述阀盖与标记套之间设有限制标记套周向转动的 限位结构。
在本实施例中， 所述连接结构包括设在手轮上的外螺紋 21和设在标记套中 与外螺紋配合的内螺紋 31， 所述外螺紋和内螺紋的旋向与关闭阀门时拧紧手轮 的旋向相反。 涉及到旋向的问题， 事实上， 在行业习惯中， 右旋转动手轮为拧 紧手轮关闭阀门的方向， 因此这里外螺紋和内螺紋的旋向一般为左旋螺紋。 当 然也有特殊情况， 当左旋手轮为关闭阀门的方向， 则外螺紋和内螺紋设为右旋 螺紋。所述限位结构包括设在阀盖和标记套之间的限位块 11和限位槽 32， 所述 限位块卡在限位槽中。 所述限位块设在阀盖上且位于标记尺上方， 所述限位槽 设在标记套上。 当然也可以将限位块设在标记套上， 限位槽设在阀盖上且位于 标记尺下方， 这样能保证标记套跟随手轮上下移动时， 限位结构不会脱开。 所述标记套中轴向设有至少一个凹槽 33， 所述凹槽上至少有一端位于所述 内螺紋上。 在本实施例中， 凹槽共设置了 4个并且均布在标记套中的内螺紋上， 液体可通过凹槽排放， 若在户外或低温区域结冰时， 凹槽也能实现破冰效果， 方便阀门顺利开关动作， 及时打开或关闭阀门。 另外在本实施例中， 所述标记 尺连续环设在阀盖上部外侧面上。
实施例二：
本实施例区别于实施例一的结构在于： 所述连接结构包括设在手轮上将标 记套轴向定位在手轮上的两个轴用挡圈， 所述轴用挡圈分别设在手轮上位于标 记套上下两侧的部分上。 而限位结构采用与实施例一相同的结构。
实施例三：
本实施例区别于实施例一的结构在于： 所述连接结构包括设在手轮上将标 记套轴向定位在手轮上的一个挡销和一个径向台阶， 所述挡销和径向台阶分别 设在手轮上位于标记套上下两侧的部分上。 挡销可以径向插装到手轮上， 也可 以用螺钉或螺栓替换。 考虑到安装问题， 一般是径向台阶在下， 挡销在上。 而 限位结构采用与实施例一相同的结构。
实施例四：
本实施例区别于实施例一的结构在于： 所述限位结构包括设在标记套中的 多边形孔和设在阀盖上的与所述多边形孔配合的多边形柱体， 所述多边形柱体 保持伸入多边形孔中。 而连接结构可以采用实施例一、 实施例二或实施例三采 用的连接结构中的任意一种结构。
事实上， 本发明中的连接结构还可以采用一个轴用挡圈和一个挡销来实现， 也可以采用一个轴用挡圈和一个径向台阶来实现。 上述所有实施例中， 所述标 记尺也可以间隔环设在阀盖上部外侧面上， 一般标记尺用有色涂料刷在阀盖上 即可， 这样节约涂料， 降低了成本， 为了增强涂料的牢固度， 可以在标记尺位 置设置粗糙面。
除上述优选实施例外， 本发明还有其他的实施方式， 本领域技术人员可以 根据本发明作出各种改变和变形， 只要不脱离本发明的精神， 均应属于本发明 所附权利要求所定义的范围。

Claims

权 利 要 求 书
1、 一种阀用开关指示装置， 包括阀盖 （1 ) 和设在阀盖上部的手轮 （2 )， 其特征在于： 所述手轮上设有标记套 （3 )， 所述阀盖上部外侧壁上周向设置有 标记尺 （4)， 在阀门全开状态下， 所述标记套的下端面不低于标记尺的上沿， 在阀门全关状态下， 所述标记套的下端面不高于标记尺的下沿， 所述手轮与标 记套之间设有使标记套跟随手轮上下移动的连接结构， 所述阀盖与标记套之间 设有限制标记套周向转动的限位结构。
2、 根据权利要求 1所述的一种阀用开关指示装置，其特征在于：所述连接 结构包括设在手轮上的外螺紋 （21 ) 和设在标记套中与外螺紋配合的内螺紋
( 31 )， 所述外螺紋和内螺紋的旋向与关闭阀门时拧紧手轮的旋向相反。
3、 根据权利要求 1所述的一种阀用开关指示装置，其特征在于：所述限位 结构包括设在阀盖和标记套之间的限位块 （11 ) 和限位槽 （32 )， 所述限位块卡 在限位槽中。
4、 根据权利要求 3所述的一种阀用开关指示装置，其特征在于：所述限位 块设在阀盖上且位于标记尺上方， 所述限位槽设在标记套上。
5、 根据权利要求 1或 2或 3或 4所述的一种阀用开关指示装置，其特征在 于： 所述标记套中轴向设有至少一个凹槽 （33 )， 所述凹槽上至少有一端位于所 述内螺紋上。
6、 根据权利要求 1或 2或 3或 4所述的一种阀用开关指示装置，其特征在 于： 所述标记尺连续环设在阀盖上部外侧面上。
7、 根据权利要求 1或 2或 3或 4所述的一种阀用开关指示装置，其特征在 于： 所述标记尺间隔环设在阀盖上部外侧面上。
8、 根据权利要求 1所述的一种阀用开关指示装置，其特征在于：所述连接 结构包括设在手轮上将标记套轴向定位在手轮上的两个轴用挡圈， 所述轴用挡 权 利 要 求 书
圈分别设在手轮上位于标记套上下两侧的部分上。
9、 根据权利要求 1所述的一种阀用开关指示装置，其特征在于：所述连接 结构包括设在手轮上将标记套轴向定位在手轮上的一个挡销和一个径向台阶， 所述挡销和径向台阶分别设在手轮上位于标记套上下两侧的部分上。
10、 根据权利要求 1或 2或 8或 9所述的一种阀用开关指示装置， 其特征 在于： 所述限位结构包括设在标记套中的多边形孔和设在阀盖上的与所述多边 形孔配合的多边形柱体， 所述多边形柱体保持伸入多边形孔中。
PCT/CN2012/076311 2012-05-31 2012-05-31 一种阀用开关指示装置 WO2013177772A1 (zh)

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