CN212839454U - Double-safety stop valve - Google Patents
Double-safety stop valve Download PDFInfo
- Publication number
- CN212839454U CN212839454U CN202020574390.4U CN202020574390U CN212839454U CN 212839454 U CN212839454 U CN 212839454U CN 202020574390 U CN202020574390 U CN 202020574390U CN 212839454 U CN212839454 U CN 212839454U
- Authority
- CN
- China
- Prior art keywords
- valve
- fixedly connected
- bottom end
- clack
- valve rod
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 45
- 238000012856 packing Methods 0.000 claims abstract description 15
- 230000009977 dual effect Effects 0.000 claims description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Landscapes
- Lift Valve (AREA)
- Check Valves (AREA)
Abstract
The utility model discloses a double-safety stop valve, which comprises a valve body, a valve rod, a valve clack, a pressure plate and a rubber gasket, wherein the top end of the valve cover is fixedly connected with the bottom end of a packing, the outer wall of the valve rod is provided with threads, the valve rod is movably connected inside the packing through the threads, the top end of the valve clack is provided with a clamping groove matched with the clamping plate, the clamping plate is movably clamped in the clamping groove, the valve clack is fixedly connected with a reset spring at one end deviating from the valve rod, the top end of the pressure plate is fixedly connected with the bottom end of the reset spring, the pressure plate is fixedly connected with a sealing gasket at the bottom end of the valve clack through the reset spring, the rubber gasket is fixedly connected at the bottom end of the valve cover, the double-safety stop valve can increase the, increase the life of seal seat circle, solved the stop valve and used the problem of the sealing performance variation after a period.
Description
Technical Field
The utility model relates to a control valve technical field specifically is a dual fail-safe stop valve.
Background
The valve is a device used for controlling the direction, pressure and flow of fluid in a fluid system, is widely applied to modern industrial production, is one of the most widely used valves, namely a stop valve, and is popular because the friction force between sealing surfaces is small in the opening and closing process, the maintenance is convenient, and the pressure application range is wide;
the stop valve is also called stop valve, belong to the forced seal type valve, so when the valve is closed, must exert pressure to the valve flap, in order to force the sealing surface not to leak, when the medium enters the valve from the valve flap below, the resistance that the operating force needs to overcome, it is the thrust produced by pressure of the medium and friction force of the valve stem and packing, the force of closing the valve is greater than the force of opening the valve, so the diameter of the valve stem is bigger, otherwise the trouble that the valve stem bends against will happen is divided into three kinds according to the connection mode, flange joint, screw thread joint, welded joint, after the valve appears from the self-sealing, the medium flow direction of the stop valve changes and enters the valve pocket from the valve flap top, at this moment, under the medium pressure, the force of closing the valve is small, and the valve opening is big, the diameter of the valve stem can be reduced correspondingly, meanwhile, under the medium action, this kind of valve is also tighter, the "three, the flow direction of the stop valve is uniformly from top to bottom, when the stop valve is opened, the opening height of the valve clack is 25% -30% of the nominal diameter, the maximum flow is reached, the valve reaches the full opening position, so the full opening position of the stop valve is determined by the stroke of the valve clack, the sealing performance of the stop valve refers to the capability of each sealing part for preventing fluid leakage, and the most important technical performance index of the stop valve;
the problem that the sealing performance is poor easily appears after the existing stop valve is used for a long time.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a dual fail-safe stop valve to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a double-safety stop valve comprises a valve body, a valve rod, a valve clack, a pressure plate and a rubber gasket, wherein a sealing surface is arranged inside the valve body, a sealing seat ring is arranged on the inner wall of the sealing surface, the top end of the valve body is fixedly connected with a valve cover through a bolt, the top end of the valve cover is fixedly connected with the bottom end of a packing, the outer wall of the valve rod is provided with threads, the valve rod is movably connected inside the packing through the threads, the top end of the valve rod is fixedly connected with a hand wheel, the valve rod is fixedly connected with a clamping plate at one end deviating from the hand wheel, the top end of the valve clack is provided with a clamping groove matched with the clamping plate, the clamping plate is movably clamped in the clamping groove, the valve clack is fixedly connected with a reset spring at one end deviating, the rubber gasket is fixedly connected to the bottom end of the valve cover.
Preferably, the packing is internally provided with threads.
Preferably, the valve clack is movably connected to the bottom end of the valve rod through a clamping groove.
Preferably, the diameter of the pressure plate is greater than the diameter of the sealing face.
Preferably, the sealing surface is located directly below the valve stem.
Preferably, the sealing gasket is made of rubber, and the bottom end of the sealing gasket is arc-shaped and convex.
Compared with the prior art, the beneficial effects of the utility model are that: this dual fail-safe stop valve can increase the leakproofness of stop valve through setting up reset spring, clamp plate, sealed seat circle and sealed the pad, utilizes sealed pad and clamp plate can hug closely on sealed face, reduces simultaneously with the friction of sealed seat circle, increases the life of sealed seat circle, has solved the problem that the stop valve sealing performance variation after using a period.
Can increase the leakproofness of stop valve through setting up the rubber packing ring, prevent that liquid from flowing from the valve gap, can prevent simultaneously that collision friction from appearing in valve clack and valve gap bottom, be favorable to increasing the life of valve clack, prevent the stop valve sealing performance variation, solved the easy problem that the weeping appears of stop valve.
Drawings
Fig. 1 is a schematic structural section view of the present invention.
Fig. 2 is a schematic view of the top of the structure of the present invention.
Fig. 3 is an enlarged schematic view of the structure a of the present invention.
In the figure: the valve comprises a valve body 1, a valve rod 2, a valve cover 3, a valve clack 4, a return spring 5, a pressure plate 6, a sealing seat ring 7, a sealing gasket 8, a packing 9, a hand wheel 10, a rubber gasket 11, a clamping plate 12, a clamping groove 13 and a sealing surface 14.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Referring to fig. 1-3, the present invention provides a technical solution: a double-safety stop valve comprises a valve body 1, a valve rod 2, a valve clack 4, a pressure plate 6 and a rubber gasket 11, wherein a sealing surface 14 is arranged inside the valve body 1, the sealing surface 14 is positioned under the valve rod 2, a sealing seat ring 7 is arranged on the inner wall of the sealing surface 14, the sealing performance of the stop valve can be improved by arranging the sealing seat ring 7, the top end of the valve body 1 is fixedly connected with a valve cover 3 through a bolt, the top end of the valve cover 3 is fixedly connected with the bottom end of a packing 9, threads are arranged inside the packing 9, the outer wall of the valve rod 2 is provided with threads, the valve rod 2 is movably connected inside the packing 9 through the threads, the top end of the valve rod 2 is fixedly connected with a hand wheel 10, one end of the valve rod 2 deviating from the hand wheel 10 is fixedly connected with a clamping plate 12, the top end of the valve clack 4 is provided with a clamping groove 13 matched with, the top end of the pressure plate 6 is fixedly connected with the bottom end of the reset spring 5, the pressure plate 6 can play a role of buffering by being provided with the reset spring 5, the valve rod 2 is favorably protected, the diameter of the pressure plate 6 is larger than that of the sealing surface 14, the pressure plate 6 is fixedly connected with the bottom end of the valve clack 4 by the reset spring 5, the bottom end of the pressure plate 6 is fixedly connected with the sealing gasket 8, the sealing gasket 8 is made of rubber, the bottom end of the sealing gasket 8 is in an arc convex shape, the sealing gasket 8 and the pressure plate 6 can be tightly attached to the sealing surface 14, meanwhile, the friction with the sealing seat ring 7 is reduced, the service life of the sealing seat ring 7 is prolonged, the rubber gasket 11 is fixedly connected with the bottom end of the valve cover 3, the sealing performance of the stop valve can be improved by arranging the, prevent stop valve sealing performance degradation.
The working principle is as follows: during the use, through rotating hand wheel 10 and driving valve rod 2 and rotate and descend, make clamp plate 6 sticiss on sealed face 14, sealed pad 8 is located sealed face 14 simultaneously, is favorable to increasing the leakproofness of device, plays the effect of buffering through reset spring 5, can reduce the power that valve clack 4 and clamp plate 6 received, is favorable to protecting valve clack 4 and clamp plate 6, prevents that stop valve sealing performance variation.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a dual fail-safe stop valve, includes valve body (1), valve rod (2), valve clack (4), clamp plate (6) and rubber packing ring (11), its characterized in that: the improved valve is characterized in that a sealing surface (14) is arranged inside the valve body (1), a sealing seat ring (7) is arranged on the inner wall of the sealing surface (14), the top end of the valve body (1) is fixedly connected with a valve cover (3) through a bolt, the top end of the valve cover (3) is fixedly connected with the bottom end of a packing (9), the outer wall of the valve rod (2) is provided with threads, the valve rod (2) is movably connected inside the packing (9) through the threads, the top end of the valve rod (2) is fixedly connected with a hand wheel (10), the valve rod (2) is fixedly connected with a clamping plate (12) at one end deviating from the hand wheel (10), the top end of the valve clack (4) is provided with a clamping groove (13) matched with the clamping plate (12), the clamping plate (12) is movably clamped in the clamping groove (13), the valve clack (4) is fixedly connected with a reset spring (5) at one end, the pressure plate (6) is fixedly connected to the bottom end of the valve clack (4) through a return spring (5), a sealing gasket (8) is fixedly connected to the bottom end of the pressure plate (6), and a rubber gasket (11) is fixedly connected to the bottom end of the valve cover (3).
2. A double safety shut off valve as defined in claim 1, wherein: and threads are arranged inside the packing (9).
3. A double safety shut off valve as defined in claim 1, wherein: the valve clack (4) is movably connected to the bottom end of the valve rod (2) through a clamping groove (13).
4. A double safety shut off valve as defined in claim 1, wherein: the diameter of the pressure plate (6) is greater than the diameter of the sealing surface (14).
5. A double safety shut off valve as defined in claim 1, wherein: the sealing surface (14) is located directly below the valve rod (2).
6. A double safety shut off valve as defined in claim 1, wherein: the sealing gasket (8) is made of rubber, and the bottom end of the sealing gasket (8) is arc-shaped and convex.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020574390.4U CN212839454U (en) | 2020-04-17 | 2020-04-17 | Double-safety stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020574390.4U CN212839454U (en) | 2020-04-17 | 2020-04-17 | Double-safety stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212839454U true CN212839454U (en) | 2021-03-30 |
Family
ID=75151919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020574390.4U Active CN212839454U (en) | 2020-04-17 | 2020-04-17 | Double-safety stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212839454U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113309861A (en) * | 2021-06-09 | 2021-08-27 | 欧冠阀门科技有限公司 | Double-sealing piston type flow-regulating pressure-regulating valve |
-
2020
- 2020-04-17 CN CN202020574390.4U patent/CN212839454U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113309861A (en) * | 2021-06-09 | 2021-08-27 | 欧冠阀门科技有限公司 | Double-sealing piston type flow-regulating pressure-regulating valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208719435U (en) | A kind of sealing structure of one-way ball valve and one-way ball valve | |
| CN218845171U (en) | Ball valve with good sealing performance | |
| CN105508720A (en) | Corrugated pipe stop valve for photo-thermal electricity generation fused salt | |
| CN212839454U (en) | Double-safety stop valve | |
| CN110748652B (en) | Vacuum die-casting stop valve of hydraulic pump | |
| CN217355649U (en) | Sealing structure of ultralow-temperature and high-temperature fixed ball valve | |
| CN214579249U (en) | High temperature and high pressure resistant stop valve | |
| CN212203216U (en) | Ball valve with detachable valve seat | |
| CN211820778U (en) | Special two-way soft sealing flange butterfly valve of sea water | |
| CN210240601U (en) | Durable type stop valve case | |
| CN209604656U (en) | A kind of straight-through stop valve that sealing performance is high | |
| CN208734921U (en) | A kind of ball valve preventing sealing High Pressure Difference and high leakage | |
| CN218408651U (en) | Built-in swash plate type check valve | |
| CN208311486U (en) | A kind of shut-off valve that spool is anti-rotational | |
| CN105465392A (en) | Valve fast in response | |
| CN211550544U (en) | High-temperature high-pressure angle type forge welding balance stop valve | |
| CN213451800U (en) | Valve with corrosion resistance | |
| CN220151907U (en) | High-strength anti-offset stop valve | |
| CN212804252U (en) | Stop valve of disk seat | |
| CN214093062U (en) | High-pressure large-diameter stop valve | |
| CN219639449U (en) | Anti-scouring stop valve with double sealing effect | |
| CN213871199U (en) | Two-way ball valve for pressure compensation | |
| CN215831192U (en) | Composite sealing self-centering ball valve | |
| CN219035570U (en) | High leakproofness butterfly valve | |
| CN220850761U (en) | Anti-overflow stop valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |