CN112113011B - Double-sealing vacuum one-way valve - Google Patents
Double-sealing vacuum one-way valve Download PDFInfo
- Publication number
- CN112113011B CN112113011B CN202011135105.XA CN202011135105A CN112113011B CN 112113011 B CN112113011 B CN 112113011B CN 202011135105 A CN202011135105 A CN 202011135105A CN 112113011 B CN112113011 B CN 112113011B
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- valve body
- sealing ring
- outer valve
- double
- sealing
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- 238000007789 sealing Methods 0.000 title claims abstract description 105
- 230000000694 effects Effects 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 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
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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
-
- 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
Landscapes
- 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 penetrates through the first outer valve body and the second outer valve body at the same time 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 check valve is different from the conventional check valve, so that the sealing effect can be effectively ensured, and the use requirement can be met; and through the combined valve body structure that sets up, when the valve body part need maintenance, it is more convenient to dismantle, has also reduced use cost.
Description
Technical Field
The invention relates to the technical field of check valves, in particular to a double-seal vacuum check valve.
Background
The check valve is a common valve body structure, and is commonly called as a check valve, wherein fluid can only flow along a water inlet, but water outlet media cannot flow back. One-way valves are also known as check valves or non-return valves. For preventing reverse flow of oil flow in hydraulic systems or compressed air in pneumatic systems.
However, the existing check valve has certain defects in use, such as common sealing effect when being used in vacuumizing operation, easy occurrence of air leakage and other phenomena, and difficulty in meeting the use requirements of precision products, so that the double-sealing vacuum check valve is provided.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: how to better improve the sealing effect of the check valve so as to meet the use requirement of precision products, and a double-sealing vacuum check valve is provided.
The invention solves the technical problems through the following technical scheme that 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 hollow structures and are mutually communicated.
Still further, the second sealing ring is the T shape sealing ring that both ends area size is different, the great one end in T shape sealing ring area is located the outside of whole valve body, and the less one end in area is located the inboard of whole valve body, T shape sealing ring with the export shape assorted of first outer valve body.
Still further, the double-seal vacuum check valve still includes locating component, locating component includes connecting seat and locking dish, the connecting seat with the valve rod is connected, locking dish with the valve rod is dismantled and is connected, the connecting seat with the locking dish sets up respectively the both sides of first sealing washer.
Still further, double seal vacuum check valve still includes coupling spring, supporting seat, coupling spring's one end with the connecting seat is connected, and the other end with the supporting seat is connected, coupling spring cover is established the valve rod is outside.
Further, the connecting spring is a T-shaped spring.
Still further, the double-seal vacuum check 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.
Still further, a caulking groove for installing the second sealing ring is arranged on the valve rod.
Still further, 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.
Still further, the double seal vacuum check valve further comprises a connecting sleeve integrally formed with the first outer valve body.
Compared with the prior art, the invention has the following advantages: the double-sealing vacuum check valve is different from the conventional check valve, so that the sealing effect can be effectively ensured, and the use requirement is met; and through the combined valve body structure that sets up, when the valve body part need maintenance, it is more convenient to dismantle, has also reduced use cost.
Drawings
FIG. 1a is a schematic diagram of a vacuum self-holding 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 diagram of a closure according to an embodiment of the present invention;
FIG. 2b is a cross-sectional view of FIG. 2 a;
FIG. 3 is a schematic view of a double seal vacuum check valve positioned inside a vacuum self-holding chamber according to an embodiment of the present invention;
FIG. 4 is a schematic view of a double seal vacuum check valve connected to a vacuum evacuation system according to an embodiment of the present invention;
fig. 5 is a side view of two double seal vacuum check valves in a practical embodiment of the invention.
Detailed Description
The following describes in detail the examples of the present invention, which are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of protection of the present invention is not limited to the following examples.
As shown in fig. 1, this embodiment provides a technical solution: a self-sealing vacuum adsorption mechanism mainly comprises three parts, namely a vacuum self-pressure maintaining cavity, a plurality of double-sealing vacuum check valves (double-sealing vacuum check valves 8 and 9) and a sealing cover.
The vacuum self-pressure maintaining cavity is designed into a square structure of 300 mm-500 mm, the inside of the vacuum self-pressure maintaining cavity is divided into square cavities of 3 multiplied by 3 or 4 multiplied by 4 according to the size, the cavities are separated by reinforcing ribs with the width of 6-8 mm, the peripheral cavity wall width is designed to be 6-8 mm, a double-sealing vacuum one-way valve 9 is arranged between the square cavity and the square cavity, an installation through hole with the shape consistent with that of the double-sealing vacuum one-way valve 9 is processed in the middle of the cavity reinforcing ribs, and the double-sealing vacuum one-way valve 9 penetrates through the cavity reinforcing ribs, is glued and sealed by sealant. One part of the outer wall of the cavity is provided with a pipe thread, one end of the pipe thread is connected with one end of a double-seal vacuum one-way valve 8 in a sealing way, and the other end of the pipe thread is connected with one prescription cavity. The thickness of the whole vacuum self-pressure maintaining cavity is 30-50 mm, and the thickness of the cavity bottom is 8-10 mm.
As shown in fig. 2, the design external dimension of the cover is consistent with that of the vacuum self-pressure maintaining cavity. The outer surface of the sealing cover is designed with a sealing groove with the width of 2mm and the depth of 2mm and a boss with the thickness of 15mm to 15 mm. The center of the boss is provided with a vent hole with phi of 0.8, the vent hole is communicated with each square cavity of the vacuum self-pressure maintaining cavity, the inner surface of the sealing cover is a smooth surface, the sealing cover is welded and sealed with the vacuum self-pressure maintaining cavity, and the sealing groove is clamped and adsorbed and connected with thin plate type precision parts when the vacuum self-pressure maintaining cavity is used.
As shown in fig. 3 to 5, the double-seal vacuum check valve 9 and the double-seal vacuum check valve 8 each comprise 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, wherein 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, 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 valve rod, and the interiors of the first outer valve body 1 and the second outer valve body 2 are hollow structures and are mutually communicated.
The first sealing ring 31 is a circular sealing ring, and is used for playing a role in sealing a first layer, and can be matched with an outlet of the second outer valve body 2 to realize gas circulation.
The second sealing ring 32 is a T-shaped sealing ring with one big end and one small end, one big end of the area of the T-shaped sealing ring is located on the outer side of the whole valve body, one small end of the area is located on the inner side of the whole valve body, the structure is matched with the shape of the outlet of the first outer valve body 1, the contact area when the first outer valve body 1 is sealed can be effectively increased, the sealing effect is improved, the sealing effect is used for playing a second layer of sealing effect, and the air circulation can be realized by matching with the outlet of the first outer valve body 1.
The double-sealing vacuum check valve 9 and the double-sealing vacuum check valve 8 both further comprise positioning components, each positioning component comprises a connecting seat 41 and a locking disc 42, each connecting seat 41 is fixedly connected with the valve rod 3, each locking disc 42 is detachably connected with the valve rod 3, and each connecting seat 41 and each locking disc 42 are respectively arranged on two sides of the corresponding first sealing ring 31 and are used for fixing the position of the corresponding first sealing ring 31.
The double-sealing vacuum check valve 9 and the double-sealing vacuum check valve 8 both further comprise a connecting spring 5 and a supporting seat 6, one end of the connecting spring 5 is connected with the connecting seat 41, the other end of the connecting spring is connected with the supporting seat 6, and the connecting spring 5 is sleeved outside the valve rod 3 and can play a role in driving the first sealing ring 31 and the valve rod 3 to move.
The connecting spring 5 is a T-shaped spring.
The support seat 6 is not connected with the first outer valve body 1.
The double-sealing vacuum check valve 9 and the double-sealing vacuum check valve 8 both further comprise an auxiliary sealing ring 7, the auxiliary sealing ring 7 is arranged at the sealing connection position between the second outer valve body 2 and the first outer valve body 1, and the double-sealing vacuum check valve mainly plays a role in connecting and sealing structural members of the valve body, so that gas leakage of the valve body can be effectively prevented.
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 the circulation of internal and external environmental gases.
The double-sealing vacuum check 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 vacuumizing system.
It should be noted that the double-seal vacuum check valve not only can be applied to the vacuum pumping system of the embodiment, but also can be applied to other vacuum pumping systems, such as vacuum pumping pipelines and the like, and the application range is quite wide.
Working principle: when the vacuum self-pressure maintaining device is used, the double-sealing vacuum one-way valve 9 and the double-sealing vacuum one-way valve 8 are firstly arranged at the appointed position on the vacuum self-pressure maintaining cavity, the direction of each one-way valve needs to be paid attention to during installation, after the installation of each one-way valve is completed, the double-sealing vacuum one-way valve 8 is connected with an external vacuumizing system through the connecting sleeve 12, the sealing cover and the vacuum self-pressure maintaining cavity are welded and sealed at the moment, then the sealing groove is clamped with a thin plate type precision part, the vacuumizing system is started, the internal pressure of the initial vacuum self-pressure maintaining cavity is larger than the external pressure, at the moment, the T-shaped spring is stressed and compressed, the T-shaped sealing ring and the circular sealing ring move leftwards from the initial position, after the vacuumizing is stopped, the external pressure is larger than the internal pressure of the vacuum self-pressure maintaining cavity, the T-shaped sealing ring is driven by the T-shaped spring to move rightwards, the circular sealing ring is continuously given to the right pressure, the internal space of the vacuum self-pressure maintaining cavity is sealed, and the danger caused by the fact that the workpiece is separated from the internal space of the thin plate type precision part is effectively avoided when the vacuum pressure is insufficient due to the adoption of the double-layer sealing.
In conclusion, the self-sealing vacuum adsorption mechanism can conveniently realize off-line clamping adjustment of thin plate type precision parts, does not need to be completed in a machine tool, and greatly reduces equipment downtime; the double-sealing one-way valve is adopted, so that the mechanism has an air leakage self-closing function, and the danger caused by the separation of a workpiece when the vacuum pressure is insufficient can be effectively avoided; the clamping device has a unique thin plate adsorption function, so that the application range is wider, the clamping requirement of more product characteristics can be met, and the clamping device is worthy of popularization and use.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (4)
1. A double-seal vacuum one-way valve is characterized in that: the valve rod penetrates through the first outer valve body and the second outer valve body at the same time, 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 hollow structures and are mutually communicated;
The second sealing ring is a T-shaped sealing ring with different areas at two ends, one end of the T-shaped sealing ring with larger area is positioned at the outer side of the whole valve body, one end with smaller area is positioned at the inner side of the whole valve body, and the T-shaped sealing ring is matched with the shape of the outlet of the first outer valve body;
The double-seal vacuum check 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;
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; the connecting spring is a T-shaped spring;
The double-sealing vacuum check 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;
the first sealing ring is a round sealing ring and is used for playing a role in sealing a first layer and realizing gas circulation by being matched with an outlet of the second outer valve body.
2. A double seal vacuum check valve according to claim 1, wherein: the valve rod is provided with a caulking groove for installing the second sealing ring.
3. A double seal vacuum check valve according to claim 2, 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.
4. A double seal vacuum check valve according to claim 3, wherein: the double-seal vacuum check 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112113011A CN112113011A (en) | 2020-12-22 |
| CN112113011B true CN112113011B (en) | 2024-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011135105.XA Active CN112113011B (en) | 2020-10-20 | 2020-10-20 | Double-sealing vacuum one-way valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN112113011B (en) |
Citations (9)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2020
- 2020-10-20 CN CN202011135105.XA patent/CN112113011B/en active Active
Patent Citations (9)
| 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 |
| 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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| CN112113011A (en) | 2020-12-22 |
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