CN209458473U - A kind of low leakage sealed structure of novel valve stem - Google Patents
A kind of low leakage sealed structure of novel valve stem Download PDFInfo
- Publication number
- CN209458473U CN209458473U CN201822185842.5U CN201822185842U CN209458473U CN 209458473 U CN209458473 U CN 209458473U CN 201822185842 U CN201822185842 U CN 201822185842U CN 209458473 U CN209458473 U CN 209458473U
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- CN
- China
- Prior art keywords
- filler
- valve
- valve rod
- layer
- valve body
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- 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
- 239000000945 filler Substances 0.000 claims abstract description 81
- 238000007789 sealing Methods 0.000 claims abstract description 25
- 238000003825 pressing Methods 0.000 claims abstract description 21
- 239000000428 dust Substances 0.000 claims abstract description 12
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 6
- 238000005482 strain hardening Methods 0.000 claims abstract description 6
- 238000004381 surface treatment Methods 0.000 claims abstract description 5
- 238000005299 abrasion Methods 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 5
- 230000036316 preload Effects 0.000 abstract description 5
- 230000013011 mating Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 239000005431 greenhouse gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model discloses a kind of low leakage sealed structures of novel valve stem, including valve body, valve rod, first layer filler, second layer filler, filler nail pressing, preload sealing ring, EU sealing ring, dust ring, hold-down grid, clamping screw, locking nut, filler preloading spring.The benefit of the utility model: the whole design of the utility model meets A grades of ISO15848 and TA-LUFT requirement, and structure is simple, and design rationally, is suitable for a wide range of promote；First layer filler uses the low loss filler of GarloGk, and second layer filler chooses the low loss filler of PTFE or GarloGk according to temperature, and filler is authenticated through ISO15848 and TA-LUFT；Mating reaction using dust ring, EU sealing ring, preload sealing ring is improved sealing performance；Stem surface when valve rod is moved up and down or rotated horizontally, can be reduced the abrasion to valve body, improved service life using person of outstanding talent gram energy cold-working mirror surface treatment so that stem surface is more smooth.
Description
Technical field
The utility model relates to a kind of low leakage sealed structure of valve rod more particularly to a kind of low leakage sealed knots of novel valve stem
Structure belongs to valve arrangement applied technical field.
Background technique
Influence of the development of global industry to environment increasingly shows, and the discharge of industrial greenhouse gases and pollutant is ring
The main source of border pollution and greenhouse gas emission.The important control element that valve is conveyed as medium, leakage is as leakage
One of source, 51% or more of the fugacity leakage total leakage rate of Zhan occurred through valve, control volatility has been had been carried out both at home and abroad
Gas discharge relevant criterion or specification, as U.S. environment protection belong to " METHOD 21 ", ISO 15848, Germany TA-LUFT,
GB/T 24681 etc. requires to have done specific standard to the fugacity leakage of valve.
China in recent years to valve fugacity leakage require increasingly pay attention to, to petrochemical industry, especially to it is inflammable and explosive,
The pipeline of toxic equal special medias, has been Compulsory Feature to the leakage of valve fugacity, but rarely valve producer can for the country
The requirement for reaching ISO 15848 or TA-LUFT standard, with the development of petrochemical industry and the change to product demand structure is used
Change, the research and development of the low leakage structure of valve fugacity are imperative.
Low its structure of leakage structure of existing valve fugacity is simple, but its leakproofness is unable to satisfy ISO15848A grades
It also or is that can satisfy requirements, but its structure is complicated with TA-LUFT requirement, manufacture craft is cumbersome and high production cost, hardly possible
To meet the market demand, a kind of reference paper (application number: 201820016532.8 patent names: the low leakage packing seal of valve rod
Structure) documented by device, the device component number is numerous, and sealing ring and its oblique angle production it is cumbersome, so as to cause life
Produce at high cost, production efficiency is low, it is difficult to meet the market demand.
Utility model content
The purpose of this utility model is that provides a kind of novel valve stem low leakage sealed knot to solve the above-mentioned problems
Structure.
The utility model is achieved through the following technical solutions above-mentioned purpose, a kind of low leakage sealed structure of novel valve stem,
It being formed including valve body, valve rod, the valve body is provided with perforative stem through-hole from top to bottom, and the valve rod is fitted into stem through-hole,
Valve rod is connected with valve body slides, and first layer filler is arranged between the valve body and valve rod and second layer filler, the second layer are filled out
Filler nail pressing is arranged in the surface of first layer filler, the surface of second layer filler in material position, and the surface of filler nail pressing is fixed
The two sides of bonding pad pressing plate, the hold-down grid are fixedly connected by clamping screw with valve body, and clamping screw uses locking screw
Mother's locking, is arranged filler preloading spring between the locking nut and hold-down grid.
Preferably, the stem surface is using person of outstanding talent gram energy cold-working mirror surface treatment, and Ra is less than 0.1.
Preferably, the first layer filler uses the low loss filler of GarloGk, second layer filler using PTFE or
The low loss filler of GarloGk.
Preferably, setting pre-tightens sealing ring between the filler nail pressing and valve body, is arranged between filler nail pressing and valve rod
EU sealing ring, the top of filler nail pressing are arranged dust ring, the dust ring between hold-down grid and valve rod gap just under
Side.
Preferably, the filler preloading spring is specially butterfly spring.
The beneficial effects of the utility model are:
1. the utility model uses the low loss filler of GarloGk using the double-deck filler design, first layer filler, the second layer is filled out
Material chooses the low loss filler of PTFE or GarloGk according to temperature, and filler is authenticated through ISO15848 and TA-LUFT.
2. the utility model obtains sealing performance using the mating reaction of dust ring, EU sealing ring, preload sealing ring
It improves.
3. the stem surface of the utility model is using person of outstanding talent gram energy cold-working mirror surface treatment, Ra is less than 0.1, so that stem surface is more
To be smooth, when valve rod is moved up and down or rotated horizontally, the abrasion to valve body can be reduced, is improved service life.
4. filler preloading spring is arranged between the locking nut and hold-down grid of the utility model, preloading spring is specially butterfly
Shape spring enables and presses tighter when compressing filler nail pressing and first layer filler, second layer filler, can be improved at valve rod
Sealing performance, and when filler occur micro abrasion when, butterfly spring can automatic compensating pre-tighten again, improve service life.
5. the whole design of the utility model meets ISO15848A grades and TA-LUFT requirements, structure is simple, and design is reasonable,
Suitable for promoting on a large scale.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
In figure: 1, valve body, 2, valve rod, 3, first layer filler, 4, second layer filler, 5, filler nail pressing, 6, preload sealing ring,
7, EU sealing ring, 8, dust ring, 9, hold-down grid, 10, clamping screw, 11, locking nut, 12, filler preloading spring.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Refering to Figure 1, a kind of low leakage sealed structure of novel valve stem, including valve body 1, valve rod 2 composition, the valve body
1 is provided with perforative stem through-hole from top to bottom, and the valve rod 2 is fitted into stem through-hole, and valve rod 2 and valve body 1 are slidably connected, described
First layer filler 3 is set between valve body 1 and valve rod 2 and second layer filler 4, the second layer filler 4 are located at first layer filler 3
Filler nail pressing 5 is arranged in the surface of surface, second layer filler 4, and the surface of filler nail pressing 5 is fixedly connected with hold-down grid 9, institute
The two sides for stating hold-down grid 9 are fixedly connected by clamping screw 10 with valve body 1, and clamping screw 10 is locked using locking nut 11,
Filler preloading spring 12 is set between the locking nut 11 and hold-down grid 9.
As a kind of technical optimization scheme of the utility model, 2 surface of valve rod can cold-working mirror using person of outstanding talent gram
Reason, Ra is less than 0.1, so that 2 surface of valve rod is more smooth, when valve rod 2 is moved up and down or rotated horizontally, can reduce to valve body
1 abrasion, improves service life.
As a kind of technical optimization scheme of the utility model, the first layer filler 3 is filled out using the low loss of GarloGk
Material, second layer filler 4 are chosen according to temperature and use the low loss filler of PTFE or GarloGk, and filler is through ISO15848 and TA-
LUFT certification.
As a kind of technical optimization scheme of the utility model, it is arranged between the filler nail pressing 5 and valve body 1 pre- close
Seal 6, is arranged EU sealing ring 7 between filler nail pressing 5 and valve rod 2, dust ring 8, the dust ring is arranged in the top of filler nail pressing 5
8 between hold-down grid 9 and valve rod 2 gap underface, dust ring 8, EU sealing ring 7, pre-tighten sealing ring 6 mating reaction
So that sealing performance is improved.
As a kind of technical optimization scheme of the utility model, the filler preloading spring 12 is specially butterfly spring,
Enable and press tighter when compressing filler nail pressing 5 and first layer filler 3, second layer filler 4, can be improved close at valve rod 2
Sealing property, and when filler occur micro abrasion when, butterfly spring can automatic compensating pre-tighten again, improve service life.
Embodiment
When the utility model is used, after valve starting, valve rod 2 is up and down firstly, the present apparatus is installed to suitable position
Or when rotating horizontally, generates fugacity and leak, the low loss filler of the use of first layer filler 3 GarloGk, second layer filler 4
The low loss filler of PTFE or GarloGk is chosen according to temperature, the mating reaction of dust ring 8, EU sealing ring 7, preload sealing ring 6 makes
Sealing performance is improved, and 2 surface of valve rod, using person of outstanding talent gram energy cold-working mirror surface treatment, Ra is less than 0.1, so that 2 surface of valve rod
It is more smooth, when valve rod 2 is moved up and down or rotated horizontally, the abrasion to valve body 1 can be reduced, filler preloading spring 12 is specific
For butterfly spring, enables and press tighter when compressing filler nail pressing 5 and first layer filler 3, second layer filler 4, can be improved
Sealing performance at valve rod 2, and when filler occur micro abrasion when, butterfly spring can automatic compensating pre-tighten again, raising makes
Use the service life.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (5)
1. a kind of low leakage sealed structure of novel valve stem, including valve body (1), valve rod (2) composition, it is characterised in that: the valve body
(1) it is provided with perforative stem through-hole from top to bottom, the valve rod (2) is fitted into stem through-hole, valve rod (2) and valve body (1) sliding
First layer filler (3) and second layer filler (4), the second layer filler is arranged in connection between the valve body (1) and valve rod (2)
(4) it is located at the surface of first layer filler (3), filler nail pressing (5) are arranged in the surface of second layer filler (4), filler nail pressing (5)
Surface be fixedly connected hold-down grid (9), the two sides of the hold-down grid (9) are consolidated by clamping screw (10) and valve body (1)
Fixed connection, clamping screw (10) are locked using locking nut (11), are arranged between the locking nut (11) and hold-down grid (9)
Filler preloading spring (12).
2. a kind of low leakage sealed structure of novel valve stem according to claim 1, it is characterised in that: the valve rod (2)
Surface is using person of outstanding talent gram energy cold-working mirror surface treatment, and Ra is less than 0.1.
3. a kind of low leakage sealed structure of novel valve stem according to claim 1, it is characterised in that: the first layer is filled out
Expect that (3) use the low loss filler of GarloGk, second layer filler (4) uses the low loss filler of PTFE or GarloGk.
4. a kind of low leakage sealed structure of novel valve stem according to claim 1, it is characterised in that: the filler nail pressing
(5) setting pre-tightens sealing ring (6) between valve body (1), and EU sealing ring (7) are arranged between filler nail pressing (5) and valve rod (2), fill out
Expect that dust ring (8) are arranged in the top of nail pressing (5), the dust ring (8) is located at gap between hold-down grid (9) and valve rod (2)
Underface.
5. a kind of low leakage sealed structure of novel valve stem according to claim 1, it is characterised in that: the filler pre-tightens
Spring (12) is specially butterfly spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822185842.5U CN209458473U (en) | 2018-12-25 | 2018-12-25 | A kind of low leakage sealed structure of novel valve stem |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822185842.5U CN209458473U (en) | 2018-12-25 | 2018-12-25 | A kind of low leakage sealed structure of novel valve stem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209458473U true CN209458473U (en) | 2019-10-01 |
Family
ID=68042051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822185842.5U Expired - Fee Related CN209458473U (en) | 2018-12-25 | 2018-12-25 | A kind of low leakage sealed structure of novel valve stem |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209458473U (en) |
-
2018
- 2018-12-25 CN CN201822185842.5U patent/CN209458473U/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: 20191001 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |