CN219655413U - Bellows stop valve - Google Patents
Bellows stop valve Download PDFInfo
- Publication number
- CN219655413U CN219655413U CN202223411728.2U CN202223411728U CN219655413U CN 219655413 U CN219655413 U CN 219655413U CN 202223411728 U CN202223411728 U CN 202223411728U CN 219655413 U CN219655413 U CN 219655413U
- Authority
- CN
- China
- Prior art keywords
- valve
- corrugated pipe
- sealing
- bellows
- 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 93
- 210000002421 cell wall Anatomy 0.000 claims 2
- 230000008676 import Effects 0.000 abstract 2
- 239000012530 fluid Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000002184 metal Substances 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
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Details Of Valves (AREA)
Abstract
The utility model provides a bellows stop valve, including the valve body, the valve clack, the valve gap, well bucket, valve rod and valve rod linkage piece, the valve pocket is inside to be set up, the valve clack is installed in the valve pocket, the valve pocket both sides set up the import and export, it sets up on same straight line to import and export, well bucket sets up between valve gap and valve body, the one end and the valve rod linkage piece of valve rod are connected, the other end of valve rod passes valve gap and well bucket in proper order stretches into the valve pocket and is connected with the valve clack, set up the bellows on the valve rod is located the part of well bucket, the bellows has last bellows seal structure and lower bellows seal structure, seal structure seals valve gap and well bucket in the bellows, lower bellows seal structure seals the inner wall of well bucket of bellows and bellows, through set up bellows seal structure and lower bellows seal structure on the bellows for the upper portion of bellows is compressed tightly sealedly sealed by well bucket and valve gap between the lower part of bellows and the inner wall of well bucket, thereby guarantee the sealing performance between bellows and valve rod and the valve gap.
Description
Technical Field
The utility model relates to the technical field of stop valves, in particular to a corrugated pipe stop valve.
Background
The bellows stop valve is also called a bellows seal stop valve, and a metal barrier is formed between a fluid medium and the atmosphere by automatic roll welding, so that the design of zero leakage of the valve rod is ensured. The corrugated pipe stop valve adopts a corrugated pipe structure, and the lower end of the stainless steel corrugated pipe is welded on the valve rod so as to prevent the valve rod from being eroded by the process fluid. The other end is arranged between the valve body and the valve cover to form static seal. The double sealing design is adopted, so that leakage can be avoided if the valve rod filler fails to the corrugated pipe, the corrugated pipe is welded on the valve rod, stable operation performance is maintained, and valve rod vibration caused by valve plug vibration is avoided. The device is most suitable for pipelines of mediums such as steam, inflammable, explosive, heat conducting oil, high purity, poisonous and the like.
The sealing performance among the valve cover, the valve rod and the middle barrel part of the existing corrugated pipe stop valve is poor, so that the leakage phenomenon can occur after long-term use.
Disclosure of Invention
In view of this, the present utility model provides a bellows stop valve.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a bellows stop valve, includes valve body, valve clack, valve gap, well bucket, valve rod and valve rod linkage spare, the valve body is inside to set up the valve pocket, the valve clack is installed in the valve pocket, the valve pocket both sides set up the exit, the exit sets up on same straight line, well bucket sets up between valve gap and valve body, the one end and the valve rod linkage spare of valve rod are connected, the other end of valve rod passes valve gap and well bucket in proper order and stretches into the valve pocket and be connected with the valve clack, the valve rod sets up the bellows in being located the part of well bucket, the bellows has bellows seal structure and lower bellows seal structure, seal structure seals valve gap and well bucket on the bellows, bellows seal structure seals inner wall and the bellows of barrel in the bellows.
Preferably, the sealing structure on the corrugated pipe comprises a sealing gasket arranged at the top end of the corrugated pipe, the sealing gasket is sleeved at the top end of the corrugated pipe in an annular structure, the middle barrel and the valve cover compress and fix the sealing gasket, and the inner ring surface of the sealing gasket is welded and fixed with the top end of the corrugated pipe.
Preferably, the top end of the middle barrel and the bottom end of the valve cover are respectively concaved inwards to form a lower sealing groove and an upper sealing groove, an upper sealing ring and a lower sealing ring are respectively arranged on the top end and the bottom end of the sealing gasket, two ends of the upper sealing ring are correspondingly in sealing connection with the top end of the sealing gasket and the groove wall of the upper sealing groove, and two ends of the lower sealing ring are correspondingly in sealing connection with the bottom end of the sealing gasket and the groove wall of the lower sealing groove.
Preferably, a corrugated pipe limiting structure is arranged on the corrugated pipe, the corrugated pipe limiting structure is a limiting disc formed at the top end of the corrugated pipe, and the bottom surface of the limiting disc is in contact with the top surface of the sealing gasket.
Preferably, the lower corrugated pipe sealing structure comprises a corrugated pipe sealing part and an O-shaped ring, wherein the corrugated pipe sealing part is formed at the bottom end of the corrugated pipe, the corrugated pipe sealing part is provided with a sealing ring groove, the sealing ring groove is arranged on the outer side surface of the sealing part, and the O-shaped ring is arranged in the sealing ring groove to seal the sealing ring groove and the inner wall of the middle barrel.
Preferably, the bottom end of the corrugated pipe is welded and fixed with the valve rod.
The utility model has the beneficial effects that: according to the utility model, the upper corrugated pipe sealing structure and the lower corrugated pipe sealing structure are arranged on the corrugated pipe, so that the upper part of the corrugated pipe is tightly pressed and sealed by the middle barrel and the valve cover, and the lower part of the corrugated pipe is in sealing connection with the inner wall of the middle barrel, so that the sealing performance between the corrugated pipe and the valve rod and between the corrugated pipe and the valve cover is ensured.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is an enlarged view at A of FIG. 1;
fig. 3 is an enlarged view at B in fig. 1.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model will be further described with reference to the drawings.
The utility model provides the following technical scheme:
as shown in fig. 1 to 3, the utility model discloses a bellows stop valve, which comprises a valve body 1, a valve clack 2, a valve cover 3, a middle barrel 4, a valve rod 5 and a valve rod linkage piece 6, and is characterized in that: the valve body 1 is internally provided with a valve cavity 7, the valve clack 2 is arranged in the valve cavity 7, two sides of the valve cavity 7 are provided with an inlet and an outlet 8, the inlet and the outlet 8 are arranged on the same straight line, the middle barrel 4 is arranged between the valve cover 3 and the valve body 1, one end of the valve rod 5 is connected with a valve rod linkage piece 6, the other end of the valve rod 5 sequentially penetrates through the valve cover 3 and the middle barrel 4 to extend into the valve cavity 7 and be connected with the valve clack 2, a corrugated pipe 9 is arranged on the part of the valve rod 5 in the middle barrel 4, the corrugated pipe 9 is provided with an upper corrugated pipe sealing structure 10 and a lower corrugated pipe sealing structure 11, the upper corrugated pipe 9 seals the valve cover 3 and the middle barrel 4, and the lower corrugated pipe 9 sealing structure seals the inner wall of the middle barrel 4 of the corrugated pipe 9 and the corrugated pipe 9. Specifically, in the design, through setting up bellows seal structure 10 and lower bellows seal structure 11 on bellows 9 for the upper portion of bellows 9 is compressed tightly sealedly by well bucket 4 and valve gap 3, and the sealing connection between the inner wall of the lower part of bellows 9 and well bucket 4, thereby guarantees the sealing performance between bellows 9 and valve rod 5 and valve gap 3.
Further, the upper sealing structure of the corrugated pipe 9 comprises a sealing gasket 12 arranged at the top end of the corrugated pipe 9, the sealing gasket 12 is sleeved at the top end of the corrugated pipe 9 in an annular structure, the middle barrel 4 and the valve cover 3 are fixedly pressed against the sealing gasket 12, and the inner annular surface of the sealing gasket 12 is fixedly welded with the top end of the corrugated pipe 9. In the embodiment, the sealing gasket is welded on the corrugated pipe to ensure the connection strength and the tightness between the sealing gasket and the corrugated pipe, and the valve cover and the middle barrel compress the corrugated pipe while compressing the sealing gasket, so that the contact area between the corrugated pipe and the valve cover and the contact area between the corrugated pipe and the middle barrel are increased, and the sealing performance is improved.
Further, the top end of the middle barrel 4 and the bottom end of the valve cover 3 are respectively concave to form a lower sealing groove 13 and an upper sealing groove 14, an upper sealing ring 15 and a lower sealing ring 16 are respectively arranged on the top end and the bottom end of the sealing gasket 12, two ends of the upper sealing ring 15 are correspondingly in sealing connection with the top end of the sealing gasket 12 and the groove wall of the upper sealing groove 14, and two ends of the lower sealing ring 16 are correspondingly in sealing connection with the bottom end of the sealing gasket 12 and the groove wall of the lower sealing groove 13.
Further, a bellows limiting structure 17 is arranged on the bellows 9, the bellows limiting structure 17 is a limiting disc formed at the top end of the bellows 9, and the bottom surface of the limiting disc is in contact with the top surface of the sealing gasket 12.
Further, the lower bellows seal structure 11 includes a bellows seal portion 18 formed at the bottom end of the bellows 9, and an O-ring 19, where the seal portion is provided with a seal ring groove 20, the seal ring groove 20 is disposed on an outer side surface of the seal portion, and the O-ring 19 is disposed in the seal ring groove 20 to seal the seal ring groove 20 and an inner wall of the middle barrel 4. Further, the bottom end of the corrugated pipe 9 is fixedly welded with the valve rod 5. Specifically, the bottom of bellows and the sealing between the valve rod are in the same place through welding the two, reduce the gap between the two and produce to sealing between inner wall of well bucket and the bellows adopts and sets up O type circle on the bellows and seals, and such seal structure is simple, and ageing O type circle after the dismouting of being convenient for changes long-term use.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The utility model provides a bellows stop valve, includes valve body, valve clack, valve gap, well bucket, valve rod and valve rod linkage piece, its characterized in that: the valve is characterized in that a valve cavity is formed in the valve body, the valve clack is arranged in the valve cavity, inlet and outlet are formed in two sides of the valve cavity, the inlet and the outlet are formed in the same straight line, the middle barrel is arranged between the valve cover and the valve body, one end of the valve rod is connected with the valve rod linkage piece, the other end of the valve rod sequentially penetrates through the valve cover and the middle barrel to extend into the valve cavity to be connected with the valve clack, a corrugated pipe is arranged on the part, located in the middle barrel, of the valve rod, the corrugated pipe is provided with an upper corrugated pipe sealing structure and a lower corrugated pipe sealing structure, the upper corrugated pipe sealing structure seals the valve cover and the middle barrel, and the lower corrugated pipe sealing structure seals the inner wall of the middle barrel of the corrugated pipe and the corrugated pipe.
2. The bellows stop valve of claim 1, wherein: the upper sealing structure of the corrugated pipe comprises a sealing gasket arranged at the top end of the corrugated pipe, the sealing gasket is sleeved at the top end of the corrugated pipe in an annular structure, the middle barrel and the valve cover are fixedly pressed against the sealing gasket, and the inner ring surface of the sealing gasket is fixedly welded with the top end of the corrugated pipe.
3. The bellows stop valve of claim 2, wherein: the top of well bucket and the bottom of valve gap indent respectively form lower seal groove and last seal groove, set up sealing washer and lower sealing washer respectively on sealing washer's the top and the bottom, the both ends of upper sealing washer correspond with sealing washer's top and the cell wall sealing of upper seal groove meet, the both ends of lower sealing washer correspond with sealing washer's bottom and the cell wall sealing of lower seal groove meet.
4. The bellows stop valve of claim 2, wherein: the corrugated pipe is provided with a corrugated pipe limiting structure, the corrugated pipe limiting structure is a limiting disc formed at the top end of the corrugated pipe, and the bottom surface of the limiting disc is in contact with the top surface of the sealing gasket.
5. The bellows stop valve of claim 1, wherein: the lower corrugated pipe sealing structure comprises a corrugated pipe sealing part and an O-shaped ring, wherein the corrugated pipe sealing part and the O-shaped ring are formed at the bottom end of the corrugated pipe, a sealing ring groove is formed in the corrugated pipe sealing part, the sealing ring groove is arranged on the outer side face of the sealing part, and the O-shaped ring is arranged in the sealing ring groove to seal the sealing ring groove and the inner wall of the middle barrel.
6. The bellows stop valve of claim 1, wherein: and the bottom end of the corrugated pipe is welded and fixed with the valve rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223411728.2U CN219655413U (en) | 2022-12-19 | 2022-12-19 | Bellows stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223411728.2U CN219655413U (en) | 2022-12-19 | 2022-12-19 | Bellows stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219655413U true CN219655413U (en) | 2023-09-08 |
Family
ID=87857373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223411728.2U Active CN219655413U (en) | 2022-12-19 | 2022-12-19 | Bellows stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219655413U (en) |
-
2022
- 2022-12-19 CN CN202223411728.2U patent/CN219655413U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210141367U (en) | Close valve that gas tightness is good | |
| CN217177458U (en) | Corrugated pipe stop valve with valve seat double-sealing structure | |
| CN219655413U (en) | Bellows stop valve | |
| CN213954356U (en) | Reinforced low-temperature bellows sealing stop valve | |
| CN213236086U (en) | Stainless steel welding bellows stop valve | |
| CN218913753U (en) | Corrosion-resistant corrugated stop valve | |
| CN217874279U (en) | Bellows gate valve with well bucket seal structure | |
| CN206274078U (en) | A kind of idle call cutoff valve with high sealing performance | |
| CN205654516U (en) | Marsh gas compressor that seal is good | |
| CN2249339Y (en) | Corrugated pipe sealing device for valve | |
| CN219549756U (en) | Bellows stop valve | |
| CN216430511U (en) | Long-acting sealing medical gas safety valve | |
| CN214699263U (en) | Corrugated pipe stop valve convenient to disassemble and assemble | |
| CN212616395U (en) | Bellows gate valve that sealing performance is high | |
| CN210770273U (en) | Corrugated pipe stop valve | |
| CN219734228U (en) | Special bellows stop valve of chlorine | |
| CN212839485U (en) | Forged steel gate valve for high-temperature and high-pressure power station | |
| CN214789378U (en) | Anti-leakage valve | |
| CN218063412U (en) | Isolated high-sealing electromagnetic gas valve | |
| CN210600261U (en) | High-temperature high-pressure wear-resistant ball valve with good sealing effect | |
| CN220828528U (en) | Bellows stop valve | |
| CN212616295U (en) | Novel rubber sealing element | |
| CN212318956U (en) | Corrugated pipe stop valve | |
| CN209084028U (en) | It is a kind of anticorrosion and can to reduce the shut-off valve of sealed pressure | |
| CN201902682U (en) | Stop valve of corrugated pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |