CN208431452U - A kind of valve rod sealing device - Google Patents
A kind of valve rod sealing device Download PDFInfo
- Publication number
- CN208431452U CN208431452U CN201820682285.5U CN201820682285U CN208431452U CN 208431452 U CN208431452 U CN 208431452U CN 201820682285 U CN201820682285 U CN 201820682285U CN 208431452 U CN208431452 U CN 208431452U
- Authority
- CN
- China
- Prior art keywords
- valve rod
- sealing
- sealing element
- valve
- spring
- 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
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- Details Of Valves (AREA)
Abstract
The utility model relates to a kind of valve rod sealing devices, it is arranged between valve rod and valve deck, it is characterized by comprising sealing elements and spring, the sealing element is open circles cyclic structure, spring is equipped with inside the sealing element, the sealing element center is connecting hole, in the valve rod insertion connecting hole, it the advantage is that, spring structure inside the utility model, sealing element keeps uniform lasting plastic deformation, self-tightening sealing may be implemented, valve rod leak-proof structure sealing is lasting, sealing performance is reliable, high temperature resistant.The opening and closing torque of the structure is significantly smaller than conventional valves opening and closing torque, can reach light open and close valve, can reduce the abrasion of valve rod, increases valve rod and uses cycle-index.Lasting sealing effect can be kept in harsh environment, greatly save production cost and maintenance cost.
Description
Technical field
The utility model relates to valve sealing element production field, in particular to a kind of valve rod sealing device.
Background technique
Valve production technology has reached its maturity at present, and using effect is also accepted.Valve used in the country at present
The valve stem packing of door all seals substantially for common O-ring, U-shaped packing seal, lip shape packing seal, square ring sealing with
And V-type packing seal etc.；But the above packing seal is in actual use, especially band pressure switch when, switching torque
It is bigger, and non-refractory, service life are short.This is just to being engaged in valve operation personnel, maintenance personal and engineering technology people
Member, proposes very high requirement.
Utility model content
The purpose of this utility model is to provide the valve stem seal dresses that a kind of sealing effect is more reliable, and the service life is longer
It sets.
To achieve the above object, the valve rod sealing device of the utility model is arranged between valve rod and valve deck, and feature exists
In: including sealing element and spring, the sealing element is open circles cyclic structure, and spring is equipped with inside the sealing element, described close
Sealing center is connecting hole, in the valve rod insertion connecting hole.
Further, the present apparatus further includes airtight and watertight padding and gland, and the airtight and watertight padding is filled into sealing element spring
Top position, the sealing element top are equipped with gland.
Preferably, the sealing element connecting hole and valve rod are interference fit, and the sealing element outer circle and valve deck are matched for interference
It closes.
Preferably, the airtight and watertight padding is plastic material.
The present apparatus mainly has the advantage that
1, the spring structure inside the utility model, sealing element keep uniform lasting plastic deformation, self-tightening may be implemented
Sealing, valve rod leak-proof structure sealing is lasting, sealing performance is reliable, high temperature resistant.2, the opening and closing torque of the structure is significantly smaller than tradition
Valve opening and closing torque can reach light open and close valve, can reduce the abrasion of valve rod, increase valve rod and use cycle-index.It 3, can be with
Lasting sealing effect is kept in harsh environment, greatly saves production cost and maintenance cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is sealing element schematic diagram of internal structure.
In figure: 1 is valve rod, and 2 be gland, and 3 be sealing element, and 31 be airtight and watertight padding, and 32 be spring, and 4 be valve deck.
Specific embodiment
As shown in Figure 1 and Figure 2, the valve rod sealing device of the utility model, mainly by sealing element 3, spring 32, airtight and watertight padding
31 and gland 2 form, sealing element 3 is the annular structure of boring, spring 32 is equipped with inside hollow sealing element 3, together
When in 3 contained spring of sealing element, 32 top position fill airtight and watertight padding 31 made of plastic material, and in airtight and watertight padding 31
Side is equipped with gland 2 and compresses.
The center of sealing element 3 is connecting hole, and valve rod 1 is inserted into connecting hole.Sealing element 3 be located at valve rod 1 and valve deck 4 it
Between, the connecting hole and valve rod 1 of sealing element 3 are interference fit, and 3 outer circle of sealing element and valve deck 4 are interference fit.
Sealing element 3 in actual use, is first fitted into valve deck 4 by the utility model, then valve rod 1 is passed through sealing element
3 connecting hole, 3 outer circle of sealing element and 4 inner hole of valve deck are interference fitted, and 1 outer circle of valve rod and 3 connecting hole of sealing element are interference fitted, together
When above the airtight and watertight padding 31 of sealing element 3 be arranged gland 2, the airtight and watertight padding 31 in sealing element 3 is compressed.Due to sealing
Under the elastic reaction of 3 contained spring 32 of part, so that sealing element 3 keeps uniform lasting plastic deformation, holding for sealing performance is kept
Long property.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that the foregoing is merely a specific embodiment of the invention, the guarantor that is not intended to limit the present invention
Range is protected, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all be contained in this hair
Within bright protection scope.
Claims (4)
1. a kind of valve rod sealing device, be arranged between valve rod (1) and valve deck (4), it is characterised in that: including sealing element (3) and
Spring (32), the sealing element (3) are open circles cyclic structure, are equipped with spring (32) inside the sealing element (3), the sealing
Part (3) center is connecting hole, in the valve rod insertion connecting hole.
2. valve rod sealing device according to claim 1, it is characterised in that: further include airtight and watertight padding (31) and gland
(2), the airtight and watertight padding (31) is filled into spring (32) top position inside sealing element, is equipped with above the sealing element (3)
Gland (2).
3. valve rod sealing device according to claim 1, it is characterised in that: the connecting hole and valve rod of the sealing element (3)
It (1) is interference fit, sealing element (3) outer circle and valve deck (4) are interference fit.
4. valve rod sealing device according to claim 2, it is characterised in that: the airtight and watertight padding (31) is plastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820682285.5U CN208431452U (en) | 2018-05-09 | 2018-05-09 | A kind of valve rod sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820682285.5U CN208431452U (en) | 2018-05-09 | 2018-05-09 | A kind of valve rod sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208431452U true CN208431452U (en) | 2019-01-25 |
Family
ID=65103234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820682285.5U Expired - Fee Related CN208431452U (en) | 2018-05-09 | 2018-05-09 | A kind of valve rod sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208431452U (en) |
-
2018
- 2018-05-09 CN CN201820682285.5U patent/CN208431452U/en not_active Expired - Fee Related
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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: 20190125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |