CN112113011A - Double-sealing vacuum one-way valve - Google Patents
Double-sealing vacuum one-way valve Download PDFInfo
- Publication number
- CN112113011A CN112113011A CN202011135105.XA CN202011135105A CN112113011A CN 112113011 A CN112113011 A CN 112113011A CN 202011135105 A CN202011135105 A CN 202011135105A CN 112113011 A CN112113011 A CN 112113011A
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- valve body
- double
- outer valve
- sealing
- sealing ring
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- 238000007789 sealing Methods 0.000 title claims abstract description 106
- 230000000694 effects Effects 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a double-sealing vacuum one-way valve which comprises a first outer valve body, a second outer valve body, a valve rod, a first sealing ring and a second sealing ring, wherein the first outer valve body is in threaded connection with the second outer valve body, the valve rod simultaneously penetrates through the first outer valve body and the second outer valve body and is in sliding connection with the first outer valve body and the second outer valve body, the first sealing ring is arranged at an outlet of the first outer valve body, the second sealing ring is arranged at an outlet of the second outer valve body, and the first sealing ring and the second sealing ring are both arranged on the valve rod. The double-sealing vacuum one-way valve is different from a conventional one-way valve, so that the sealing effect can be effectively ensured, and the use requirement can be met; and through the combined valve body structure, when the valve body part needs maintenance, the disassembly is more convenient, and the use cost is also reduced.
Description
Technical Field
The invention relates to the technical field of one-way valves, in particular to a double-sealing vacuum one-way valve.
Background
The check valve is a common valve body structure, the check valve is a commonly known check valve that fluid can only flow along a water inlet and a medium at a water outlet can not flow back. Check valves are also known as check valves or check valves. For preventing reverse flow of oil in hydraulic systems or for preventing reverse flow of compressed air in pneumatic systems.
However, the existing check valve has certain defects in use, for example, when the check valve is used for vacuumizing, the sealing effect is general, air leakage and other phenomena are easy to generate, and the use requirement of precision products is difficult to meet.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: how to better improve the sealed effect of check valve to satisfy the user demand of precision product provides a double seal vacuum check valve.
The invention solves the technical problems through the following technical scheme, and the valve comprises a first outer valve body, a second outer valve body, a valve rod, a first sealing ring and a second sealing ring, wherein the first outer valve body is in threaded connection with the second outer valve body, the valve rod simultaneously penetrates through the first outer valve body and the second outer valve body and is in sliding connection with the first outer valve body and the second outer valve body, the first sealing ring is arranged at an outlet of the first outer valve body, the second sealing ring is arranged at an outlet of the second outer valve body, the first sealing ring and the second sealing ring are both arranged on the valve rod, and the interiors of the first outer valve body and the second outer valve body are both in a hollow structure and are communicated with each other.
Furthermore, the second sealing ring is a T-shaped sealing ring with two different end areas, the end with the larger area of the T-shaped sealing ring is positioned on the outer side of the whole valve body, the end with the smaller area of the T-shaped sealing ring is positioned on the inner side of the whole valve body, and the T-shaped sealing ring is matched with the outlet shape of the first outer valve body.
Furthermore, the double-sealing vacuum one-way valve further comprises a positioning assembly, wherein the positioning assembly comprises a connecting seat and a locking disc, the connecting seat is connected with the valve rod, the locking disc is detachably connected with the valve rod, and the connecting seat and the locking disc are respectively arranged on two sides of the first sealing ring.
Furthermore, the double-sealing vacuum check valve further comprises a connecting spring and a supporting seat, one end of the connecting spring is connected with the connecting seat, the other end of the connecting spring is connected with the supporting seat, and the connecting spring is sleeved outside the valve rod.
Still further, the connecting spring is a T-shaped spring.
Furthermore, the double-sealing vacuum one-way valve further comprises an auxiliary sealing ring, and the auxiliary sealing ring is arranged at the joint between the second outer valve body and the first outer valve body.
Furthermore, the valve rod is provided with a caulking groove for mounting the second sealing ring.
Furthermore, a first through hole is formed in the first outer valve body, and a second through hole is formed in the second outer valve body.
Furthermore, the double-sealing vacuum one-way valve further comprises a connecting sleeve, and the connecting sleeve and the first outer valve body are integrally formed.
Compared with the prior art, the invention has the following advantages: the double-sealing vacuum one-way valve is different from a conventional one-way valve, so that the sealing effect can be effectively ensured, and the use requirement can be met; and through the combined valve body structure, when the valve body part needs maintenance, the disassembly is more convenient, and the use cost is also reduced.
Drawings
FIG. 1a is a schematic structural diagram of a vacuum self-pressure-sustaining chamber according to an embodiment of the present invention;
FIG. 1b is a cross-sectional view taken at A-A of FIG. 1 a;
FIG. 2a is a schematic structural view of a closure in an embodiment of the present invention;
FIG. 2b is a cross-sectional view of FIG. 2 a;
FIG. 3 is a schematic structural diagram of a double-sealing vacuum check valve located inside a vacuum self-pressure-retaining cavity in an embodiment of the invention;
FIG. 4 is a schematic structural diagram of a double sealing vacuum check valve connected to a vacuum pumping system in an embodiment of the present invention;
fig. 5 is a side view of two double-sealing vacuum check valves in an example embodiment of the invention.
Detailed Description
The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.
As shown in fig. 1, the present embodiment provides a technical solution: a self-sealing vacuum adsorption mechanism comprises three main parts, namely a vacuum self-pressure cavity, a plurality of double-sealing vacuum one-way valves (8 and 9) and a sealing cover.
The design of vacuum self preservation protects the pressure chamber and is 300mm ~ 500mm square structure, inside separates into 3X 3 or 4X 4's square chamber according to the size, be separated by the strengthening rib that the width is 6 ~ 8mm between chamber and the chamber, peripheral chamber wall width design is 6 ~ 8mm all around, install double seal vacuum check valve 9 between square chamber and the square chamber, the installation through-hole that processing appearance and double seal vacuum check valve 9 are unanimous in the middle of the cavity strengthening rib, double seal vacuum check valve 9 passes the cavity strengthening rib, adopt sealed glue to splice and seal. Pipe threads are processed at one position of the outer wall of the cavity body and are in sealing connection with one end of a double-sealing vacuum one-way valve 8 through the pipe threads, and the other end of the double-sealing vacuum one-way valve is communicated with one prescription cavity. The thickness of the whole vacuum self-pressure-retaining cavity is 30-50 mm, and the thickness of the cavity bottom is 8-10 mm.
As shown in fig. 2, the external dimension of the seal cover is designed to be consistent with that of the vacuum self-pressure cavity. The outer surface of the sealing cover is provided with a sealing groove with the width of 2mm and the depth of 2mm and a boss with the thickness of 15 mm. The central position of the boss is provided with a vent hole with phi 0.8, the hole position of the vent hole is communicated with each cavity of the vacuum self-pressure-preserving cavity, the inner surface of the sealing cover is a smooth surface and is welded and sealed with the vacuum self-pressure-preserving cavity, and the sealing groove is clamped and connected with the sheet-type precision part in an adsorption manner when in use.
As shown in fig. 3-5, the double-sealing vacuum check valve 9 and the double-sealing vacuum check valve 8 both include a first outer valve body 1, a second outer valve body 2, a valve rod 3, a first sealing ring 31 and a second sealing ring 32, the first outer valve body 1 is in threaded connection with the second outer valve body 2, the valve rod 3 simultaneously penetrates through the first outer valve body 1 and the second outer valve body 2 and is in sliding connection with the first outer valve body 1 and the second outer valve body 2, the first sealing ring 31 is arranged at an outlet of the first outer valve body 1, the second sealing ring 32 is arranged at an outlet of the second outer valve body 2, the first sealing ring 31 and the second sealing ring 32 are both installed on the valve rod 3 and are fixedly connected with the first outer valve body 1 and the second outer valve body 2, and the interiors of the first outer valve body 1 and the second outer valve body 2 are both in a.
The first sealing ring 31 is a circular sealing ring and is used for playing a role in sealing a first layer and realizing gas circulation by matching with an outlet of the second outer valve body 2.
The second sealing washer 32 is the little T shape sealing washer of the big one end of one end, the great one end of area of T shape sealing washer is located the outside of whole valve body, and the less one end of area is located the inboard of whole valve body, above-mentioned structure with the export shape phase-match of first outer valve body 1 can effectively increase the area of contact when sealing first outer valve body 1, improves sealed effect for play the sealed effect of second floor, can cooperate the export realization gas circulation of first outer valve body 1.
Double-sealing vacuum check valve 9 and double-sealing vacuum check valve 8 all still include locating component, locating component includes connecting seat 41 and locking dish 42, connecting seat 41 with valve rod 3 fixed connection, locking dish 42 with the connection can be dismantled to valve rod 3, connecting seat 41 with locking dish 42 sets up respectively first sealing washer 31's both sides are used for playing the fixed effect of first sealing washer 31 position.
Double-sealing vacuum check valve 9 and double-sealing vacuum check valve 8 all still include coupling spring 5, supporting seat 6, coupling spring 5's one end with connecting seat 41 is connected, the other end with supporting seat 6 is connected, coupling spring 5 cover is established the valve rod 3 is outside, can play the effect that drives first sealing washer 31 and the motion of valve rod 3.
The connecting spring 5 is a T-shaped spring.
The support seat 6 is not connected to the first outer valve body 1.
Double-sealing vacuum check valve 9 and double-sealing vacuum check valve 8 all still include auxiliary seal circle 7, auxiliary seal circle 7 sets up the outer valve body 2 of second with sealing connection department between the first outer valve body 1 mainly plays the work of connecting and sealing between valve body self structure, can prevent effectively that gas leakage from appearing in valve body self.
The auxiliary sealing ring 7 is an O-shaped sealing ring.
The valve stem 3 is provided with a caulking groove 321 for mounting the second seal ring 32.
The first outer valve body 1 is provided with a first through hole 11, the second outer valve body 2 is provided with a second through hole 21, and the first through hole 11 and the second through hole 21 are used for realizing circulation of internal and external environment gas.
The double-sealing vacuum one-way valve 8 further comprises a connecting sleeve 12, wherein the connecting sleeve 12 and the outlet of the first outer valve body 1 are integrally formed and are used for being conveniently connected with an external vacuum pumping system.
It should be noted that the double-sealing vacuum check valve can be applied not only to the vacuum pumping system of this embodiment, but also to other vacuum pumping systems, such as vacuum pumping pipelines, and has a wide application range.
The working principle is as follows: when in use, the double-sealing vacuum one-way valve 9 and the double-sealing vacuum one-way valve 8 are respectively arranged at the appointed positions on the vacuum self-pressure-preserving cavity, the direction of each one-way valve needs to be noticed during installation, after each one-way valve is installed, the double-sealing vacuum one-way valve 8 is connected with an external vacuumizing system through a connecting sleeve 12, at the moment, a sealing cover and the vacuum self-pressure-preserving cavity are welded and sealed, then a sealing groove is clamped with a sheet precision part, the vacuumizing system is started, the internal pressure of the vacuum self-pressure-preserving cavity is higher than the external pressure at the initial stage, at the moment, the T-shaped spring is stressed and compressed, the T-shaped sealing ring and the circular sealing ring leave the initial position and move leftwards, after vacuumizing is stopped, the external pressure is higher than the internal pressure of the vacuum self-pressure-preserving cavity, the T-shaped spring drives the T-shaped sealing ring, the inner space of the vacuum self-pressure-retaining cavity is sealed, and the leakage rate of the check valve is greatly reduced due to double-layer sealing, so that stable adsorption on sheet precision parts is realized, and the danger caused by separation of a workpiece when the vacuum pressure is insufficient is effectively avoided.
In conclusion, the self-sealing vacuum adsorption mechanism can conveniently realize offline clamping and adjustment of sheet precision parts without being finished in a machine tool, thereby greatly reducing the equipment downtime; moreover, due to the adoption of the double-sealing one-way valve, the mechanism has the function of air leakage self-closing, and the danger caused by the separation of the workpiece when the vacuum pressure is insufficient can be effectively avoided; due to the unique sheet adsorption function, the application range is wider, the clamping requirement of more product characteristics can be met, and the device is worthy of being popularized and used.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. The utility model provides a double sealing vacuum check valve which characterized in that: including the outer valve body of first outer valve body, second, valve rod, first sealing washer, second sealing washer, first outer valve body with the outer valve body threaded connection of second, the valve rod runs through simultaneously first outer valve body the outer valve body of second sets up, and with first outer valve body the outer valve body sliding connection of second, first sealing washer sets up the export of first outer valve body, the second sealing washer sets up the export of the outer valve body of second, first sealing washer the second sealing washer all sets up on the valve rod, the inside of the outer valve body of first outer valve body, second is hollow structure to communicate each other.
2. A double seal vacuum check valve as defined in claim 1 wherein: the second sealing ring is a T-shaped sealing ring with two different end areas, the end with the larger area of the T-shaped sealing ring is located on the outer side of the whole valve body, the end with the smaller area of the T-shaped sealing ring is located on the inner side of the whole valve body, and the T-shaped sealing ring is matched with the outlet shape of the first outer valve body.
3. A double seal vacuum check valve as defined in claim 2 wherein: the double-seal vacuum check valve further comprises a positioning assembly, the positioning assembly comprises a connecting seat and a locking disc, the connecting seat is connected with the valve rod, the locking disc is detachably connected with the valve rod, and the connecting seat and the locking disc are respectively arranged on two sides of the first sealing ring.
4. A double seal vacuum check valve as defined in claim 3 wherein: the double-seal vacuum check valve further comprises a connecting spring and a supporting seat, one end of the connecting spring is connected with the connecting seat, the other end of the connecting spring is connected with the supporting seat, and the connecting spring is sleeved outside the valve rod.
5. The double-seal vacuum check valve of claim 4, wherein: the connecting spring is a T-shaped spring.
6. A double seal vacuum check valve as defined in claim 5 wherein: the double-sealing vacuum one-way valve further comprises an auxiliary sealing ring, and the auxiliary sealing ring is arranged at the joint between the second outer valve body and the first outer valve body.
7. A double seal vacuum check valve as defined in claim 6 wherein: and the valve rod is provided with an embedded groove for installing the second sealing ring.
8. A double seal vacuum check valve as defined in claim 7 wherein: the first outer valve body is provided with a first through hole, and the second outer valve body is provided with a second through hole.
9. A double seal vacuum check valve as defined in claim 8 wherein: the double-sealing vacuum one-way valve further comprises a connecting sleeve, and the connecting sleeve and the first outer valve body are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011135105.XA CN112113011B (en) | 2020-10-20 | 2020-10-20 | Double-sealing vacuum one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011135105.XA CN112113011B (en) | 2020-10-20 | 2020-10-20 | Double-sealing vacuum one-way valve |
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| Publication Number | Publication Date |
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| CN112113011A true CN112113011A (en) | 2020-12-22 |
| CN112113011B CN112113011B (en) | 2024-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011135105.XA Active CN112113011B (en) | 2020-10-20 | 2020-10-20 | Double-sealing vacuum one-way valve |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU675767B3 (en) * | 1996-02-20 | 1997-02-13 | Jang Sik Park | Valve core for one way valves |
| CN102635329A (en) * | 2012-03-30 | 2012-08-15 | 西南石油大学 | Novel double-seal arrow-shaped check valve |
| CN203868430U (en) * | 2014-05-19 | 2014-10-08 | 大连理工安全装备有限公司 | Double-sealing one-way valve |
| CN204852731U (en) * | 2015-07-08 | 2015-12-09 | 福建省海洋阀门科技有限公司 | Double check valve tee bend structure |
| CN207229846U (en) * | 2017-08-04 | 2018-04-13 | 普利莱（天津）燃气设备有限公司 | A kind of low pressure double containment gas-liquid separation check valve |
| CN207316161U (en) * | 2017-11-01 | 2018-05-04 | 邛崃市欣凡尔阀业有限公司 | One kind encryption double containment environmental protection check-valves |
| CN208058042U (en) * | 2018-04-13 | 2018-11-06 | 中煤科工集团重庆研究院有限公司 | Double-protection one-way valve |
| CN209100710U (en) * | 2018-11-21 | 2019-07-12 | 山东凯恩真空技术有限公司 | A kind of vacuum pump discharges check valve |
| CN111255927A (en) * | 2020-01-14 | 2020-06-09 | 珠海格力电器股份有限公司 | Novel dual self sealss stop valve and air conditioner |
| CN213776476U (en) * | 2020-10-20 | 2021-07-23 | 中国电子科技集团公司第三十八研究所 | Vacuum one-way valve capable of realizing double sealing |
-
2020
- 2020-10-20 CN CN202011135105.XA patent/CN112113011B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU675767B3 (en) * | 1996-02-20 | 1997-02-13 | Jang Sik Park | Valve core for one way valves |
| CN102635329A (en) * | 2012-03-30 | 2012-08-15 | 西南石油大学 | Novel double-seal arrow-shaped check valve |
| CN203868430U (en) * | 2014-05-19 | 2014-10-08 | 大连理工安全装备有限公司 | Double-sealing one-way valve |
| CN204852731U (en) * | 2015-07-08 | 2015-12-09 | 福建省海洋阀门科技有限公司 | Double check valve tee bend structure |
| CN207229846U (en) * | 2017-08-04 | 2018-04-13 | 普利莱（天津）燃气设备有限公司 | A kind of low pressure double containment gas-liquid separation check valve |
| CN207316161U (en) * | 2017-11-01 | 2018-05-04 | 邛崃市欣凡尔阀业有限公司 | One kind encryption double containment environmental protection check-valves |
| CN208058042U (en) * | 2018-04-13 | 2018-11-06 | 中煤科工集团重庆研究院有限公司 | Double-protection one-way valve |
| CN209100710U (en) * | 2018-11-21 | 2019-07-12 | 山东凯恩真空技术有限公司 | A kind of vacuum pump discharges check valve |
| CN111255927A (en) * | 2020-01-14 | 2020-06-09 | 珠海格力电器股份有限公司 | Novel dual self sealss stop valve and air conditioner |
| CN213776476U (en) * | 2020-10-20 | 2021-07-23 | 中国电子科技集团公司第三十八研究所 | Vacuum one-way valve capable of realizing double sealing |
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| CN112113011B (en) | 2024-06-07 |
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