CN208703156U - The single nut squeezed seal structure of plug valve - Google Patents
The single nut squeezed seal structure of plug valve Download PDFInfo
- Publication number
- CN208703156U CN208703156U CN201821152286.5U CN201821152286U CN208703156U CN 208703156 U CN208703156 U CN 208703156U CN 201821152286 U CN201821152286 U CN 201821152286U CN 208703156 U CN208703156 U CN 208703156U
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- Prior art keywords
- valve
- valve rod
- pressed
- movable set
- cock
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Abstract
The utility model provides a kind of single nut squeezed seal structure of plug valve, and the service life is long, is not susceptible to leak.Fixation is bolted between valve body and valve deck；Cock is mounted on valve body；Valve rod is connect with cock；Bushing is mounted on valve body, and is contacted with cock；Gasket seal movable set is pressed in the contact position of bushing and cock on valve rod；Metal gasket movable set is pressed on gasket seal on valve rod；Seal washer movable set is pressed on metal gasket on valve rod；Valve deck is pressed on seal washer；Filler movable set is located above seal washer on valve rod；Metal compaction block movable set is pressed on filler on valve rod；Clamp nut movable set is connected through a screw thread on valve rod, and between valve deck；Clamp nut is pressed on metal compaction block.
Description
Technical field
The utility model relates to a kind of single nut squeezed seal structures of plug valve.
Background technique
Sealing at existing plug valve valve rod is usually sealed by a taper PTFE seal circle, by hold-down bolt to corresponding
Pressing sleeve apply pressure, allow sealing ring to expand and hold valve rod after deformation tightly, plug valve stem position is sealed simultaneously
It is sealed 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 fluid seepage；
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 single nut squeezed seal 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 single nut of plug valve is extrusion type sealed
Structure, including valve body, bushing, valve deck, cock and valve rod；Fixation is bolted between valve body and valve deck；Cock is mounted on
On valve body；Valve rod is connect with cock；Bushing is mounted on valve body, and is contacted with cock；It is characterized by also including compress spiral shell
Mother, metal compaction block, filler, seal washer, metal gasket and gasket seal；Gasket seal movable set is pressed on valve rod
In the contact position of bushing and cock；Metal gasket movable set is pressed on gasket seal on valve rod；Seal washer movable sleeve
On valve rod, and it is pressed on metal gasket；Valve deck is pressed on seal washer；Filler movable set is located at close on valve rod
Above seal washer；Metal compaction block movable set is pressed on filler on valve rod；Clamp nut movable set on valve rod,
And it is connected through a screw thread between valve deck；Clamp nut is pressed on metal compaction block.
It is provided with filler inclined-plane on filler described in the utility model, it is oblique that metal compaction block is provided on metal compaction block
Face, metal compaction block inclined-plane and filler contact of incline plane.
The utility model compared with prior art, has the following advantages that and effect:
1, gasket seal is static sealing, long service life；In order to improve the sealing performance of valve rod, it is close to increase metal gasket
Envelope improves the sealing performance at valve rod.
2, there are 3 sealings at valve rod, be deformation after filler squeezes at one, hold valve rod valve rod tightly, be seal washer at two
Being squeezed, deformation occurs embraces valve rod, is that gasket seal is squeezed after deformation and embraces valve rod at three；3 sealings can effectively prevent valve
Internal liquid leaks.
It 3, is individually, to separate, can individually adjust with the sealing of middle flange, can be improved respective at valve rod
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 include clamp nut 1, it is valve deck 2, metal compaction block 3, filler 4, close
Seal washer 5, metal gasket 6, gasket seal 7, bushing 8, valve body 9, cock 10 and valve rod 11.
Fixation is bolted between valve body 9 and valve deck 2.
Cock 10 is mounted on valve body 9.
Valve rod 11 is connect with cock 10.
Bushing 8 is mounted on valve body 9, and is contacted with cock 10.
7 movable set of gasket seal is pressed in bushing 8 and 10 contact position of cock on valve rod 11, plays sealing function.
6 movable set of metal gasket is pressed on gasket seal 7 on valve rod 11.
5 movable set of seal washer is pressed on metal gasket 6 on valve rod 11.
Valve deck 2 is pressed on seal washer 5.
4 movable set of filler is located at 5 top of seal washer on valve rod 11.Filler inclined-plane is provided on filler 4.
3 movable set of metal compaction block is pressed on filler 4 on valve rod 11.Metal pressure is provided on metal compaction block 3
Tight block inclined-plane, metal compaction block inclined-plane and filler contact of incline plane.
1 movable set of clamp nut is connected through a screw thread on valve rod 11, and between valve deck 2.Clamp nut 1 is pressed in gold
Belong on compact heap 3.
After installing valve rod 11 and cock 10, it is successively packed into gasket seal 7, metal gasket 6, gasket from bottom to up
5, filler 4, metal compaction block 3 are enclosed, valve deck 2 is then charged into, twist people's compression after tightening the connection bolt between valve deck 2 and valve body 9
Nut 1.
The working principle of this structure is as follows:
1) the connection bolt between valve deck 2 and valve body 9 is tightened, seal washer 5, metal between valve deck 2 and valve body 9 are compressed
Gasket 6, gasket seal 7 realize sealing.
2) clamp nut 1 is tightened, clamp nut 2 applies pressure to filler 4 by metallic briquette 3, and the expansion of filler 4 occurs
Valve rod 11 is held in deformation tightly, realizes sealing.
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 (2)
1. a kind of single nut squeezed seal structure of plug valve, including valve body, bushing, valve deck, cock and valve rod；Valve body and valve
Fixation is bolted between lid；Cock is mounted on valve body；Valve rod is connect with cock；Bushing is mounted on valve body, and with
Cock contact；It is characterized by also including clamp nut, metal compaction block, filler, seal washer, metal gasket and gaskets
Piece；Gasket seal movable set is pressed in the contact position of bushing and cock on valve rod；Metal gasket movable set is in valve rod
On, and be pressed on gasket seal；Seal washer movable set is pressed on metal gasket on valve rod；Valve deck is pressed in gasket
On circle；Filler movable set is located above seal washer on valve rod；Metal compaction block movable set is pressed on valve rod
On filler；Clamp nut movable set is connected through a screw thread on valve rod, and between valve deck；Clamp nut is pressed in metal pressure
On tight block.
2. the single nut squeezed seal structure of plug valve according to claim 1, it is characterised in that: on the filler
It is provided with filler inclined-plane, metal compaction block inclined-plane, metal compaction block inclined-plane and filler contact of incline plane are provided on metal compaction block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821152286.5U CN208703156U (en) | 2018-07-20 | 2018-07-20 | The single nut squeezed seal structure of plug valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821152286.5U CN208703156U (en) | 2018-07-20 | 2018-07-20 | The single nut squeezed seal structure of plug valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208703156U true CN208703156U (en) | 2019-04-05 |
Family
ID=65939438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821152286.5U Active CN208703156U (en) | 2018-07-20 | 2018-07-20 | The single nut squeezed seal structure of plug valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208703156U (en) |
-
2018
- 2018-07-20 CN CN201821152286.5U patent/CN208703156U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |