CN208703158U - The double sealing structure of plug valve - Google Patents
The double sealing structure of plug valve Download PDFInfo
- Publication number
- CN208703158U CN208703158U CN201821152467.8U CN201821152467U CN208703158U CN 208703158 U CN208703158 U CN 208703158U CN 201821152467 U CN201821152467 U CN 201821152467U CN 208703158 U CN208703158 U CN 208703158U
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- CN
- China
- Prior art keywords
- ring
- wedge
- valve
- pressed
- gasket
- 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.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 55
- 238000012856 packing Methods 0.000 claims abstract description 18
- 239000000945 filler Substances 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration 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
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Details Of Valves (AREA)
- Taps Or Cocks (AREA)
Abstract
The utility model provides a kind of double sealing structure of plug valve, and the service life is long, is not susceptible to leak.Cock is mounted on valve body；Bushing is mounted on valve body, and is contacted with cock；Seal ring set is pressed in bushing and cock contact position on valve rod；Gasket is pressed on sealing ring；Annulus is pressed on gasket；Wedge movable set is pressed on sealing ring, annulus and gasket on valve rod；Locating slot is provided at the top of wedge；The bottom of cushion block is provided with positioning ring, positioning ring and locating slot clearance fit；Mounting groove in being formed between the inner ring and valve rod of positioning ring, the first washer are mounted in interior mounting groove；Outer mounting groove is formed between the outer ring and valve deck of positioning ring, second packing ring is mounted in outer mounting groove；First washer and second packing ring are pressed in wedge；Cushion block is pressed in the first washer and second packing ring；Housing screw is pressed on cushion block, and is connected through a screw thread between valve deck；The junction of valve body and valve deck is arranged in filler.
Description
Technical field
The utility model relates to a kind of double sealing structures of plug valve.
Background technique
Sealing at existing plug valve valve rod is usually sealed by a taper PTFE seal ring, by hold-down bolt to corresponding
Pressing sleeve apply pressure, allow sealing ring expand and after deformation hold tightly cock valve rod, plug valve stem position is sealed
It is sealed simultaneously between valve deck and valve body.There are the shortcomings that are as follows: 1, only seal together at valve rod, be easy to happen liquid infiltration
Leakage；2, sealing ring is prone to wear, and causes plug valve service life impermanent.
Utility model content
The purpose of the utility model is to overcome the above deficiencies in the existing technologies, and provide a kind of structure design conjunction
The double sealing structure of the plug valve of reason, the service life is long, is not susceptible to leak.
The technical scheme in the invention for solving the above technical problem is: a kind of double sealing structure of plug valve, packet
Include valve body, bushing, valve deck, cock and valve rod；Fixation is bolted between valve body and valve deck；Valve rod is connect with cock；Rotation
Plug is mounted on valve body；Bushing is mounted on valve body, and is contacted with cock；It is characterized by also including housing screw, cushion block,
First washer, second packing ring, wedge, annulus, gasket, filler and sealing ring；Seal ring set on the valve rod, and be pressed in bushing with
Cock contact position；Gasket is pressed on sealing ring；Annulus is pressed on gasket；Wedge movable set on valve rod, and be pressed in sealing ring,
On annulus and gasket；Locating slot is provided at the top of wedge；The bottom of cushion block is provided with positioning ring, positioning ring and locating slot gap
Cooperation；Mounting groove in being formed between the inner ring and valve rod of positioning ring, the first washer are mounted in interior mounting groove；The outer ring of positioning ring
Outer mounting groove is formed between valve deck, second packing ring is mounted in outer mounting groove；First washer and second packing ring are pressed in wedge；
Cushion block is pressed in the first washer and second packing ring；Housing screw is pressed on cushion block, and is connected through a screw thread between valve deck；Filler
The junction of valve body and valve deck is set.
It is provided with sealing ring wedge face on sealing ring described in the utility model, annulus wedge face is provided on annulus, is carved
The first wedge wedge face and the second wedge wedge face are provided on block, the first wedge wedge face pressure is on sealing ring wedge face, and
Two wedge wedge face pressures are on annulus wedge face.
Sealing ring described in the utility model is V-seal ring.
Gasket described in the utility model is made of metal.
Wedge described in the utility model is made of metal.
The utility model is provided with below sealing ring carves type gasket.
The utility model is provided with circular trough in the junction of valve body and valve deck, and filler is mounted in circular trough.
Filler described in the utility model is made of graphite.
The utility model compared with prior art, has the following advantages that and effect:
1, packing seal is used at valve body and valve deck, due to being static sealing herein, can guarantee that medium can not be from completely
It is leaked at valve deck and valve body contact.
2, valve rod Chu You bis- is sealed, and is to squeeze the first washer by cushion block its distending is made to hold valve rod tightly at one, is realized valve
It is sealed at bar, is that cushion block compression wedge makes sealing ring distending hold valve rod tightly at two, realizes and sealed at valve rod.
3, valve stem seal is individually and the sealing of middle flange is separation, can individually adjust, can be improved respectively
Sealing performance.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment.
Fig. 2 is the enlarged structure schematic diagram of the part A of Fig. 1.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is pair
The explanation of the utility model and the utility model is not limited to following embodiment.
Referring to Fig. 1 and Fig. 2, the utility model embodiment includes housing screw 1, valve deck 2, cushion block 3, the first washer 4, second
Washer 5, annulus 7, gasket 8, filler 9, sealing ring 10, carves type gasket 11, bushing 12, valve body 13, cock 14 and valve rod at wedge 6
15。
Fixation is bolted between valve body 13 and valve deck 2.
Valve rod 15 is connect with cock 14.
Cock 14 is mounted on valve body 13.
Bushing 12 is mounted on valve body 13, and is contacted with cock 14.
Sealing ring 10 is sleeved on valve rod 15, and is pressed in bushing 12 and 14 contact position of cock, plays sealing function.Sealing ring
It is interference fit between 10 and valve rod 15.Sealing ring 10 is V-seal ring.Sealing ring wedge face is provided on sealing ring 10.
Gasket 8 is pressed on sealing ring 10.Gasket 8 is made of metal.
Annulus 7 is pressed on gasket 8.Annulus wedge face is provided on annulus 7.Tend to sealing when annulus 7 pushes wedge 6
Ring 10, sealing effect is more preferable.
6 movable set of wedge is pressed on sealing ring 10, annulus 7 and gasket 8 on valve rod 15.Is provided in wedge 6
One wedge wedge face and the second wedge wedge face, the first wedge wedge face pressure is on sealing ring wedge face, the second wedge wedge face
It is pressed on annulus wedge face.Wedge 6 is made of metal.The top of wedge 6 is provided with locating slot 17.
The bottom of cushion block 3 is provided with positioning ring 16, and positioning ring 16 and 17 clearance fit of locating slot make cushion block 3 push time shift
It is dynamic accurate.Mounting groove in being formed between the inner ring and valve rod 15 of positioning ring, the first washer 4 are mounted in interior mounting groove；Positioning ring
Outer ring and valve deck 2 between form outer mounting groove, second packing ring 5 is mounted in outer mounting groove.
First washer 4 and second packing ring 5 are pressed in wedge 6.
Cushion block 3 is pressed in the first washer 4 and second packing ring 5.
Housing screw 1 is pressed on cushion block 3, and is connected through a screw thread between valve deck 2.
The junction of valve body 13 and valve deck 2 is provided with circular trough, filler 9 is mounted in circular trough.The graphite system of filler 9
At.
It is provided with below sealing ring 10 and carves type gasket 11.
After installing valve rod 15 and cock 14, successively from bottom to up be packed into carve type gasket 11, sealing ring 10, filler 9,
Gasket 8, annulus 7, wedge 6, the first washer 4, second packing ring 5, cushion block 3, are then charged into valve deck 2, tighten valve deck 2 and valve body 13 it
Between connection bolt after twist people's housing screw 1.
The working principle of this structure is as follows:
1) the connection bolt between valve deck 2 and valve body 13 is tightened, the filler 9 between valve deck 2 and valve body 13 is compressed, prevents valve
Clearance leakage of the liquid from valve deck 2 and 13 junction of valve body in body 13.
2) housing screw 1 is tightened, housing screw 1 applies pressure to the first washer 4 and second packing ring 5 by cushion block 3, and first
Washer 4 and second packing ring 5 deformation occurs constitute sealing, and to wedge 6 apply pressure, wedge 6 again to sealing ring 10 apply pressure,
Deformation is brought it about, internal diameter fits closely valve rod 15, leaks liquid in valve body 13 from valve rod 15.
In addition, it should be noted that, the specific embodiments described in this specification, the shape of parts and components are named
Title etc. can be different, and above content is only to the utility model structure example explanation described in this specification.
All equivalence changes or simple change done according to structure, feature and principle described in the concept of the patent of the utility model, are wrapped
It includes in the protection scope of the utility model patent.Those skilled in the art of the present invention can be to described
Specific embodiment does various modifications or additions or is substituted in a similar manner, without departing from the knot of the utility model
Structure or beyond the scope defined by this claim, all should belong to the protection range of the utility model.
Claims (8)
1. a kind of double sealing structure of plug valve, including valve body, bushing, valve deck, cock and valve rod；Lead between valve body and valve deck
It crosses and is bolted fixation；Valve rod is connect with cock；Cock is mounted on valve body；Bushing is mounted on valve body, and is contacted with cock；
It is characterized by also including housing screw, cushion block, the first washer, second packing ring, wedge, annulus, gasket, filler and sealing rings；
Seal ring set is pressed in bushing and cock contact position on valve rod；Gasket is pressed on sealing ring；Annulus is pressed on gasket；It carves
Block movable set is pressed on sealing ring, annulus and gasket on valve rod；Locating slot is provided at the top of wedge；The bottom of cushion block
Portion is provided with positioning ring, positioning ring and locating slot clearance fit；Mounting groove in being formed between the inner ring and valve rod of positioning ring, first
Washer is mounted in interior mounting groove；Outer mounting groove is formed between the outer ring and valve deck of positioning ring, second packing ring is mounted on outer installation
In slot；First washer and second packing ring are pressed in wedge；Cushion block is pressed in the first washer and second packing ring；Housing screw is pressed in pad
On block, and it is connected through a screw thread between valve deck；The junction of valve body and valve deck is arranged in filler.
2. the double sealing structure of plug valve according to claim 1, it is characterised in that: be provided on the sealing ring
Sealing ring wedge face is provided with annulus wedge face on annulus, the first wedge wedge face and the second wedge wedge is provided in wedge
Face, the first wedge wedge face pressure is on sealing ring wedge face, and the second wedge wedge face pressure is on annulus wedge face.
3. the double sealing structure of plug valve according to claim 1, it is characterised in that: the sealing ring is that V-type is close
Seal ring.
4. the double sealing structure of plug valve according to claim 1, it is characterised in that: the gasket made of metal
At.
5. the double sealing structure of plug valve according to claim 1, it is characterised in that: the wedge made of metal
At.
6. the double sealing structure of plug valve according to claim 1, it is characterised in that: be provided with and carve below sealing ring
Type gasket.
7. the double sealing structure of plug valve according to claim 1, it is characterised in that: in the junction of valve body and valve deck
It is provided with circular trough, filler is mounted in circular trough.
8. the double sealing structure of plug valve according to claim 1, it is characterised in that: the filler graphite system
At.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821152467.8U CN208703158U (en) | 2018-07-20 | 2018-07-20 | The double sealing structure of plug valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821152467.8U CN208703158U (en) | 2018-07-20 | 2018-07-20 | The double sealing structure of plug valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208703158U true CN208703158U (en) | 2019-04-05 |
Family
ID=65939458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821152467.8U Expired - Fee Related CN208703158U (en) | 2018-07-20 | 2018-07-20 | The double sealing structure of plug valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208703158U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644403A (en) * | 2018-07-20 | 2018-10-12 | 浙江万龙机械有限公司 | A kind of double sealing structure of plug valve |
-
2018
- 2018-07-20 CN CN201821152467.8U patent/CN208703158U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644403A (en) * | 2018-07-20 | 2018-10-12 | 浙江万龙机械有限公司 | A kind of double sealing structure of plug valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190405 |