CN209213029U - An anti-lock stop valve - Google Patents
An anti-lock stop valve Download PDFInfo
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- CN209213029U CN209213029U CN201822125442.5U CN201822125442U CN209213029U CN 209213029 U CN209213029 U CN 209213029U CN 201822125442 U CN201822125442 U CN 201822125442U CN 209213029 U CN209213029 U CN 209213029U
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Abstract
一种防锁死截止阀，包括阀盖和阀体，阀盖和阀体之间通过连接螺栓紧固连接，阀盖上穿设有阀杆，阀杆下端位于阀体内，位于阀体内的阀杆下端上设有阀芯，所述的阀芯分为上阀芯和下阀芯，阀杆下端与上阀芯顶面固定连接，上阀芯内设有空腔，上阀芯底部设有连通空腔的通孔，下阀芯顶部设有连接杆，连接杆下端与下阀芯顶部固定连接，连接杆上端设有限位板；限位板设置在空腔内，限位板的水平截面直径大于通孔直径，通孔直径与连接杆直径相同；限位板顶面与空腔顶面之间设有压缩弹簧。采用上述结构，能够实现更加轻松的截止阀启闭操作，并且在阀杆移动至最大行程位置之后，无需反转，适用于管内压力较大的情况。
An anti-lock stop valve, including a bonnet and a valve body, the bonnet and the valve body are tightly connected by connecting bolts, a valve stem is pierced on the bonnet, the lower end of the valve stem is located in the valve body, and the valve body located in the valve body The lower end of the stem is provided with a spool, and the spool is divided into an upper spool and a lower spool, the lower end of the valve stem is fixedly connected to the top surface of the upper spool, the upper spool is provided with a cavity, and the bottom of the upper spool is provided with The through hole connecting the cavity, the top of the lower valve core is provided with a connecting rod, the lower end of the connecting rod is fixedly connected with the top of the lower valve core, and the upper end of the connecting rod is provided with a limit plate; the limit plate is set in the cavity, the horizontal section of the limit plate The diameter is larger than the diameter of the through hole, and the diameter of the through hole is the same as that of the connecting rod; a compression spring is arranged between the top surface of the limiting plate and the top surface of the cavity. With the above structure, the opening and closing operation of the stop valve can be realized more easily, and after the valve stem moves to the maximum stroke position, there is no need to reverse, which is suitable for the situation where the pressure in the pipe is relatively high.
Description
技术领域technical field
本实用新型涉及阀门领域，特别是一种防锁死截止阀。The utility model relates to the field of valves, in particular to an anti-lock stop valve.
背景技术Background technique
截止阀又称截门阀，属于强制密封式阀门，所以在阀门关闭时，必须向阀芯施加压力，以强制密封面不泄漏。The globe valve, also known as the gate valve, is a forced sealing valve, so when the valve is closed, pressure must be applied to the valve core to force the sealing surface not to leak.
目前，市场上的截止阀具体结构包括阀体、阀杆、与阀杆连接的阀芯、与阀体连接的阀盖以及与阀杆连接的手轮。传统的阀杆和阀芯以及阀杆和阀盖均采用螺纹连接，但是使用者在使用的过程中，会因为用力过度，导致螺纹坏死，从而影响到截止阀的正常使用；并且传统的截止阀因为阀芯需要设置密封垫片或阀座进行配合，但是两者之间配合的密封效果较差以及如何降低对流体的冲击和提高结构强度都是目前存在的问题。At present, the specific structure of the globe valve on the market includes a valve body, a valve stem, a spool connected to the valve stem, a bonnet connected to the valve body, and a handwheel connected to the valve stem. The traditional valve stem and spool as well as the valve stem and bonnet are threaded, but the user will cause thread necrosis due to excessive force during use, which will affect the normal use of the globe valve; and the traditional globe valve Because the valve core needs to be provided with a sealing gasket or a valve seat to cooperate, but the sealing effect of the cooperation between the two is poor, and how to reduce the impact on the fluid and improve the structural strength are all current problems.
发明内容Contents of the invention
本实用新型所要解决的技术问题是提供一种防锁死截止阀，能够实现更加轻松的截止阀启闭操作，并且在阀杆移动至最大行程位置之后，无需反转，适用于管内压力较大的情况。The technical problem to be solved by the utility model is to provide an anti-lock stop valve, which can realize the opening and closing operation of the stop valve more easily, and after the valve stem moves to the maximum stroke position, it does not need to be reversed. Case.
为解决上述技术问题，本实用新型所采用的技术方案是：一种防锁死截止阀，包括阀盖和阀体，阀盖和阀体之间通过连接螺栓紧固连接，阀盖上穿设有阀杆，阀杆下端位于阀体内，位于阀体内的阀杆下端上设有阀芯，所述的阀芯分为上阀芯和下阀芯，阀杆下端与上阀芯顶面固定连接，上阀芯内设有空腔，上阀芯底部设有连通空腔的通孔，下阀芯顶部设有连接杆，连接杆下端与下阀芯顶部固定连接，连接杆上端设有限位板；In order to solve the above technical problems, the technical solution adopted by the utility model is: an anti-lock stop valve, including a valve cover and a valve body, the valve cover and the valve body are fastened and connected by connecting bolts, and the valve cover is pierced There is a valve stem, the lower end of the valve stem is located in the valve body, the lower end of the valve stem located in the valve body is provided with a valve core, the valve core is divided into an upper valve core and a lower valve core, and the lower end of the valve stem is fixedly connected to the top surface of the upper valve core , there is a cavity inside the upper valve core, a through hole connecting the cavity is provided at the bottom of the upper valve core, a connecting rod is provided on the top of the lower valve core, the lower end of the connecting rod is fixedly connected with the top of the lower valve core, and a limit plate is provided at the upper end of the connecting rod ;
所述的限位板设置在空腔内，限位板的水平截面直径大于通孔直径，通孔直径与连接杆直径相同；The limiting plate is arranged in the cavity, the horizontal section diameter of the limiting plate is larger than the diameter of the through hole, and the diameter of the through hole is the same as the diameter of the connecting rod;
所述的限位板顶面与空腔顶面之间设有压缩弹簧。A compression spring is provided between the top surface of the limiting plate and the top surface of the cavity.
优选的方案中，所述的阀体包括上通道与下通道，上通道一端位于下通道一端上方，阀芯位于上通道一端，在上通道与下通道的连通位置上设有阀座，阀座与阀体之间设有第一密封圈。In a preferred solution, the valve body includes an upper channel and a lower channel, one end of the upper channel is located above one end of the lower channel, the valve core is located at one end of the upper channel, and a valve seat is provided at the communication position between the upper channel and the lower channel, and the valve seat A first sealing ring is arranged between the valve body and the valve body.
优选的方案中，所述的阀座上方的上通道内设有均流罩，阀芯位于均流罩内。In a preferred solution, a flow equalizing cover is provided in the upper channel above the valve seat, and the valve core is located in the flow equalizing cover.
优选的方案中，所述的均流罩与阀盖之间设有第三密封圈。In a preferred solution, a third sealing ring is provided between the flow equalizing cover and the valve cover.
优选的方案中，所述的阀盖在阀杆穿过的位置上设有第二密封圈。In a preferred solution, the valve cover is provided with a second sealing ring at the position where the valve stem passes through.
优选的方案中，所述的阀盖在阀杆穿过的位置上还设有环形槽，环形槽内设有滚珠，滚珠与阀杆侧壁接触。In a preferred solution, the valve cover is further provided with an annular groove at the position where the valve stem passes through, and balls are arranged in the annular groove, and the balls are in contact with the side wall of the valve stem.
优选的方案中，所述的阀盖顶部通过连接螺栓固定有导向板，阀杆穿过导向板设置，且阀杆与导向板之间螺纹连接。In a preferred solution, the top of the valve cover is fixed with a guide plate by connecting bolts, the valve stem is arranged through the guide plate, and the valve stem and the guide plate are threaded.
优选的方案中，所述的通孔侧壁上设有两个对称的限位槽，所述的连接杆侧壁上设有对称的两个凸条，凸条与限位槽尺寸相同且一一对应设置。In a preferred solution, two symmetrical limiting grooves are provided on the side wall of the through hole, and two symmetrical convex lines are provided on the side wall of the connecting rod, the convex lines have the same size as the limiting groove and a One to one corresponding setting.
本实用新型所提供的一种防锁死截止阀，通过采用上述结构，具有以下有益效果：An anti-lock stop valve provided by the utility model has the following beneficial effects by adopting the above structure:
（1）通过设置均流罩，一方面能够实现阀芯的导向，避免阀芯与阀座之间的接触错位导致密封不到位的情况；(1) By setting the flow equalizing cover, on the one hand, the guidance of the valve core can be realized, and the contact misalignment between the valve core and the valve seat can be avoided, resulting in the situation that the seal is not in place;
（2）截止阀在开启状态下，若因温度变化导致管道内压力增大时，下阀芯与上阀芯之间的弹簧能够吸收一部分的压力，能够避免压力直接作用在阀杆上导致阀杆锁死的情况；(2) When the stop valve is in the open state, if the pressure in the pipeline increases due to temperature changes, the spring between the lower valve core and the upper valve core can absorb part of the pressure, which can prevent the pressure from acting directly on the valve stem and cause the valve to close. The condition of the rod locking;
（3）截止阀在关闭状态下，上阀芯与下阀芯之间存在一定的缓冲距离，无需将阀杆移动至最低点，即可依靠弹簧弹力，实现下阀芯与阀座之间的紧密闭合，能够避免因操作失误，导致螺纹坏死、阀芯与阀杆受力多度损坏的情况发生；(3) When the stop valve is in the closed state, there is a certain buffer distance between the upper valve core and the lower valve core. It is not necessary to move the valve stem to the lowest point, and the spring force can be used to realize the gap between the lower valve core and the valve seat. Tight closure can avoid thread necrosis and excessive force damage to valve core and valve stem due to misoperation;
（4）不仅省去了翻转阀杆的步骤，同时依靠阀杆与阀盖之间的滚珠，能够进一步减小阀杆转动过程中所需要耗费的力气，使截止阀启闭更加轻松。(4) Not only does the step of flipping the valve stem be omitted, but also relying on the ball between the valve stem and the valve cover can further reduce the effort required during the rotation of the valve stem, making it easier to open and close the globe valve.
附图说明Description of drawings
下面结合附图和实施例对本实用新型作进一步说明：Below in conjunction with accompanying drawing and embodiment the utility model is further described:
图1为本实用新型的整体结构示意图。Figure 1 is a schematic diagram of the overall structure of the utility model.
图2为本实用新型的截止阀关闭状态或截止阀开启状态下管内压力增大时的阀芯结构示意图。Fig. 2 is a schematic diagram of the structure of the valve core in the closed state of the shut-off valve or the open state of the shut-off valve when the pressure in the pipe increases.
图3为本实用新型的截止阀开启状态下管内压力正常时的阀芯结构示意图。Fig. 3 is a schematic diagram of the structure of the valve core when the pressure inside the pipe is normal when the shut-off valve of the present invention is opened.
图4为本实用新型的阀盖上端结构示意图。Fig. 4 is a schematic diagram of the structure of the upper end of the valve cover of the present invention.
图5为本实用新型的上阀芯结构示意图。Fig. 5 is a structural schematic diagram of the upper valve core of the present invention.
图6为本实用新型的下阀芯结构示意图。Fig. 6 is a schematic diagram of the structure of the lower valve core of the present invention.
图中：阀盖1，阀体2，上通道201，下通道202，阀杆3，阀芯4，上阀芯401，下阀芯402，均流罩5，阀座6，第一密封圈7，第二密封圈8，滚珠9，导向板10，空腔11，限位板12，压缩弹簧13，环形槽14，通孔15，限位槽16，连接杆17，凸条18，第三密封圈19。In the figure: bonnet 1, valve body 2, upper channel 201, lower channel 202, valve stem 3, spool 4, upper spool 401, lower spool 402, equalizing cover 5, valve seat 6, first sealing ring 7. The second sealing ring 8, the ball 9, the guide plate 10, the cavity 11, the limit plate 12, the compression spring 13, the annular groove 14, the through hole 15, the limit groove 16, the connecting rod 17, the convex strip 18, the first Three sealing rings 19.
具体实施方式Detailed ways
如图1中，一种防锁死截止阀，包括阀盖1和阀体2，阀盖1和阀体2之间通过连接螺栓紧固连接，阀盖1上穿设有阀杆3，阀杆3下端位于阀体2内，位于阀体2内的阀杆3下端上设有阀芯4，其特征是：所述的阀芯4分为上阀芯401和下阀芯402，阀杆3下端与上阀芯401顶面固定连接，上阀芯401内设有空腔11，上阀芯401底部设有连通空腔11的通孔15，下阀芯402顶部设有连接杆17，连接杆17下端与下阀芯402顶部固定连接，连接杆17上端设有限位板12；As shown in Figure 1, an anti-lock stop valve includes a bonnet 1 and a valve body 2, the bonnet 1 and the valve body 2 are tightly connected by connecting bolts, the bonnet 1 is pierced with a valve stem 3, and the valve The lower end of the rod 3 is located in the valve body 2, and the lower end of the valve rod 3 in the valve body 2 is provided with a spool 4, which is characterized in that: the spool 4 is divided into an upper spool 401 and a lower spool 402, and the valve stem 3. The lower end is fixedly connected to the top surface of the upper valve core 401, the upper valve core 401 is provided with a cavity 11, the bottom of the upper valve core 401 is provided with a through hole 15 communicating with the cavity 11, and the top of the lower valve core 402 is provided with a connecting rod 17, The lower end of the connecting rod 17 is fixedly connected to the top of the lower valve core 402, and the upper end of the connecting rod 17 is provided with a limiting plate 12;
所述的限位板12设置在空腔11内，限位板12的水平截面直径大于通孔15直径，通孔15直径与连接杆17直径相同；The limiting plate 12 is arranged in the cavity 11, the horizontal section diameter of the limiting plate 12 is larger than the diameter of the through hole 15, and the diameter of the through hole 15 is the same as that of the connecting rod 17;
所述的限位板12顶面与空腔11顶面之间设有压缩弹簧13。A compression spring 13 is provided between the top surface of the limiting plate 12 and the top surface of the cavity 11 .
优选的方案中，所述的阀体2包括上通道201与下通道202，上通道201一端位于下通道202一端上方，阀芯4位于上通道201一端，在上通道201与下通道202的连通位置上设有阀座6，阀座6与阀体2之间设有第一密封圈7。In a preferred solution, the valve body 2 includes an upper passage 201 and a lower passage 202, one end of the upper passage 201 is located above one end of the lower passage 202, the valve core 4 is located at one end of the upper passage 201, and the communication between the upper passage 201 and the lower passage 202 A valve seat 6 is arranged on the position, and a first sealing ring 7 is arranged between the valve seat 6 and the valve body 2 .
优选的方案中，所述的阀座6上方的上通道201内设有均流罩5，阀芯4位于均流罩5内。In a preferred solution, the upper channel 201 above the valve seat 6 is provided with a flow equalizing cover 5 , and the valve core 4 is located in the flow equalizing cover 5 .
优选的方案中，所述的均流罩5与阀盖1之间设有第三密封圈19。In a preferred solution, a third sealing ring 19 is provided between the flow equalizing cover 5 and the valve cover 1 .
优选的方案中，所述的阀盖1在阀杆3穿过的位置上设有第二密封圈8。In a preferred solution, the valve cover 1 is provided with a second sealing ring 8 at the position where the valve stem 3 passes through.
优选的方案中，所述的阀盖1在阀杆3穿过的位置上还设有环形槽14，环形槽14内设有滚珠9，滚珠9与阀杆3侧壁接触。In a preferred solution, the valve cover 1 is further provided with an annular groove 14 at the position where the valve stem 3 passes through, and a ball 9 is arranged in the annular groove 14, and the ball 9 is in contact with the side wall of the valve stem 3 .
优选的方案中，所述的阀盖1顶部通过连接螺栓固定有导向板10，阀杆3穿过导向板10设置，且阀杆3与导向板10之间螺纹连接。In a preferred solution, the top of the valve cover 1 is fixed with a guide plate 10 by connecting bolts, the valve stem 3 is set through the guide plate 10 , and the valve stem 3 and the guide plate 10 are screwed together.
优选的方案中，所述的通孔15侧壁上设有两个对称的限位槽16，所述的连接杆17侧壁上设有对称的两个凸条18，凸条18与限位槽16尺寸相同且一一对应设置。In a preferred solution, the side wall of the through hole 15 is provided with two symmetrical limiting grooves 16, and the side wall of the connecting rod 17 is provided with two symmetrical convex strips 18, and the convex strips 18 are connected with the limiting grooves. The grooves 16 have the same size and are provided in one-to-one correspondence.
采用上述结构，通过设置均流罩，一方面能够实现阀芯的导向，避免阀芯与阀座之间的接触错位导致密封不到位的情况；截止阀在开启状态下，若因温度变化导致管道内压力增大时，下阀芯与上阀芯之间的弹簧能够吸收一部分的压力，能够避免压力直接作用在阀杆上导致阀杆锁死的情况；不仅省去了翻转阀杆的步骤，同时依靠阀杆与阀盖之间的滚珠，能够进一步减小阀杆转动过程中所需要耗费的力气，使截止阀启闭更加轻松。With the above-mentioned structure, by setting the flow equalizing cover, on the one hand, the guidance of the valve core can be realized, and the contact misalignment between the valve core and the valve seat can be avoided, resulting in insufficient sealing; When the internal pressure increases, the spring between the lower valve core and the upper valve core can absorb part of the pressure, which can avoid the situation that the pressure directly acts on the valve stem and causes the valve stem to be locked; not only saves the step of turning the valve stem, At the same time, by relying on the ball between the valve stem and the valve cover, the effort required for the rotation of the valve stem can be further reduced, making it easier to open and close the globe valve.
Claims (8)
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| CN201822125442.5U CN209213029U (en) | 2018-12-18 | 2018-12-18 | An anti-lock stop valve |
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| CN201822125442.5U CN209213029U (en) | 2018-12-18 | 2018-12-18 | An anti-lock stop valve |
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| CN209213029U true CN209213029U (en) | 2019-08-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531176A (en) * | 2020-04-14 | 2021-10-22 | 路达(厦门)工业有限公司 | One-way globe valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531176A (en) * | 2020-04-14 | 2021-10-22 | 路达(厦门)工业有限公司 | One-way globe valve |
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Address after: 443699 183 East Road, Maping Town, Zigui County, Yichang, Hubei Patentee after: Hubei Taie Fluid Control Technology Co., Ltd. Country or region after: China Address before: 443699 183 East Road, Maping Town, Zigui County, Yichang, Hubei Patentee before: HUBEI TAIHE PETROCHEMICAL EQUIPMENT Co.,Ltd. Country or region before: China |