CN114483716A - Three-way reversing isolation valve - Google Patents
Three-way reversing isolation valve Download PDFInfo
- Publication number
- CN114483716A CN114483716A CN202210163842.3A CN202210163842A CN114483716A CN 114483716 A CN114483716 A CN 114483716A CN 202210163842 A CN202210163842 A CN 202210163842A CN 114483716 A CN114483716 A CN 114483716A
- Authority
- CN
- China
- Prior art keywords
- valve body
- radial seal
- radial
- sealing ring
- way reversing
- 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.)
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Links
- 238000002955 isolation Methods 0.000 title claims abstract description 38
- 238000007789 sealing Methods 0.000 claims abstract description 108
- 238000001514 detection method Methods 0.000 claims abstract description 29
- 238000009434 installation Methods 0.000 claims abstract description 11
- 230000006835 compression Effects 0.000 claims abstract description 9
- 238000007906 compression Methods 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 claims description 17
- 239000001307 helium Substances 0.000 claims description 15
- 229910052734 helium Inorganic materials 0.000 claims description 15
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 15
- 210000002445 nipple Anatomy 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Details Of Valves (AREA)
Abstract
The invention provides a three-way reversing isolation valve which comprises a lower valve body, a second radial sealing ring, a pressing cap, a sealing joint nozzle, a valve core, an upper valve body and a compression spring, wherein the lower valve body is provided with a first radial sealing ring; the three-way reversing isolating valve provided by the invention can be used for detecting the air tightness among a plurality of cavities of one workpiece by one-time installation, is convenient to use, and greatly improves the detection efficiency of the air tightness of the workpiece.
Description
Technical Field
The invention belongs to the technical field of air tightness detection, and particularly relates to a three-way reversing isolation valve.
Background
In the field of pneumatic systems, it is necessary to detect the airtightness of parts. In particular, it is necessary to detect the airtightness of a single chamber, the airtightness between chambers, the flow direction of gas between chambers, and the like in order to provide a multi-chamber airtight component. In the conventional detection device, detection gas such as helium is usually introduced into one of the chambers, and then the detection gas is placed into a vacuum chamber to detect whether helium leaks in the vacuum chamber and further determine whether parts leak. But only one chamber can be detected once during installation, and the detection is relatively complicated. The three-way reversing isolation valve capable of reversing and isolating is needed in the next time, different inflation ends are arranged, automatic switching of different detection loops is achieved according to detection requirements, and the three-way reversing isolation valve can detect airtightness between multiple chambers and air tightness between the chambers once in installation.
Disclosure of Invention
In order to achieve the aim, the invention provides a three-way reversing isolation valve which comprises a lower valve body, a second radial sealing ring, a pressing cap, a sealing nozzle, a valve core, an upper valve body and a compression spring, wherein the lower valve body is provided with a first radial sealing ring;
a first step through inner hole is formed in the lower valve body, a helium interface is arranged at an opening of the lower end face of the first step through inner hole of the lower valve body, a workpiece interface to be detected is arranged on the outer circumferential surface of the lower valve body, and the workpiece interface to be detected is communicated with the first step through inner hole;
a second step through hole is formed in the upper valve body, a compressed gas interface is arranged at an opening of the upper end face of the second step through hole of the upper valve body, a vacuum detection box interface is arranged on the outer circumferential surface of the upper valve body, and the vacuum detection box interface is communicated with the second step through hole;
the lower valve body is fixedly connected with the upper valve body, and the first step through inner hole of the lower valve body is communicated with the second step through inner hole of the upper valve body; the valve core is a stepped shaft, a second radial sealing ring mounting groove for accommodating a second radial sealing ring is formed in the outer circular surface of the valve core, the valve core is arranged in a first stepped through inner hole of the lower valve body and a second stepped through inner hole of the upper valve body, the compression spring is arranged on the outer circumferential surface of the valve core, and the second radial sealing ring is arranged in the second radial sealing ring mounting groove in the outer circular surface of the valve core;
the sealing nozzle is internally provided with a through hole, the sealing nozzle is arranged on the lower end face of the lower valve body, the pressing cap is arranged on the outer circumferential faces of the sealing nozzle and the lower valve body, and the pressing cap is used for fixedly connecting the sealing nozzle and the lower valve body.
According to the three-way reversing isolation valve, the compressed gas interface on the upper valve body of the three-way reversing isolation valve is connected with an external gas source and is used for enabling the valve body, the upper valve body and a cavity formed by the valve core to be communicated when the valve core is downward; compressed air is cut off, the valve core is reset by a spring, and the lower valve body and the sealing nozzle of the three-way reversing isolation valve are connected with an external helium gas source.
When the three-way reversing isolation valve is used for detecting the air tightness of a workpiece, the cavity 2 of the workpiece to be detected is communicated with a workpiece interface to be detected arranged on the outer circumferential surface of the lower valve body, and the cavity 1 of the workpiece to be detected is connected with an external helium gas source; and (3) putting the three-way reversing isolation valve and the connected workpiece to be detected into a detection vacuum box integrally, and connecting the vacuum detection box interface of the upper valve body with the detection vacuum box.
After compressed gas is introduced into the three-way reversing isolation valve through a compressed gas interface of the upper valve body, the valve core moves to the lowest end under the action of the compressed gas; at the moment, the workpiece interface to be detected of the lower valve body is communicated with the vacuum detection box interface of the upper valve body, the workpiece interface to be detected on the lower valve body is disconnected with the helium interface, and then the cavity 2 of the workpiece to be detected is communicated with the interior of the detection vacuum box; and introducing helium gas into the cavity of the workpiece 1 to be detected for detecting whether the cavity of the workpiece 1 to be detected leaks to the cavity of the workpiece 2.
After the first detection is finished, the compressed gas introduced into the upper valve body is cut off, the valve core moves to the uppermost end under the action of the compression spring, the workpiece interface to be detected of the lower valve body is disconnected with the vacuum detection box interface of the upper valve body, and the workpiece interface to be detected on the lower valve body is communicated with the helium interface; and introducing helium into the lower valve body, wherein the helium enters the cavity 2 of the workpiece to be detected and is used for detecting whether the cavity 2 of the workpiece to be detected is leaked.
Further, in order to prevent that the helium that is used for detecting is at second radial seal circle because of the adhesion, and then gets into the detection return circuit to arouse the wrong report police when detecting, the second radial seal circle mounting groove quantity that holds second radial seal circle that sets up on the outer disc of case is 2, second radial seal circle mounting groove sets up independently, second radial seal circle quantity is 2, and sets up respectively in second radial seal circle mounting groove.
Furthermore, for better sealing of the detection loop and preventing helium from leaking from the second radial sealing ring, the three-way reversing isolation valve further comprises a sealing check ring, the sealing check ring is arranged in a second radial sealing ring installation groove at the lowest end of the valve core, and the sealing check ring is arranged above the second radial sealing ring.
Furthermore, in order to prevent compressed gas entering the three-way reversing isolating valve from entering a detection loop in the three-way reversing isolating valve, the three-way reversing isolating valve further comprises a first radial sealing ring, a first radial sealing ring mounting groove is further formed in the upper end of the outer circumferential surface of the valve core, and the first radial sealing ring is arranged in the first radial sealing ring mounting groove.
Furthermore, the three-way reversing isolating valve further comprises an axial sealing ring, an axial sealing ring mounting groove is further formed in the outer circumferential surface of the lower valve body, and the axial sealing ring is arranged inside the axial sealing ring mounting groove.
Further, still be provided with first external screw thread on the outer periphery of lower valve body, it still is provided with first internal thread to go up the inside second ladder link up hole internal surface of valve body, pass through threaded fixed connection between lower valve body and the last valve body.
Furthermore, the three-way reversing isolating valve further comprises a third radial sealing ring, a third radial sealing ring mounting groove is formed in the outer circumference of the sealing nozzle, and the third radial sealing ring is arranged in the third radial sealing ring mounting groove.
Furthermore, two third radial sealing ring mounting grooves are formed in the outer circumference of the sealing nozzle, the third radial sealing ring mounting grooves are independently arranged, and the number of the third radial sealing rings is 2, and the third radial sealing rings are respectively arranged in the third radial sealing ring mounting grooves.
Furthermore, the three-way reversing isolation valve further comprises a sealing gasket, the sealing gasket is arranged in a third radial sealing ring mounting groove at the uppermost end of the sealing joint, and the sealing gasket is arranged above the third radial sealing ring.
Further, still be provided with the second external screw thread on the lower valve body outer periphery, it still is provided with the second internal thread to go up to press the inside of cap, pass through screw thread fixed connection between lower valve body and the last valve body.
The invention has the beneficial effects that: the three-way reversing isolating valve provided by the invention can be used for detecting the air tightness among a plurality of cavities of one workpiece by one-time installation, is convenient to use, and greatly improves the detection efficiency of the air tightness of the workpiece.
Drawings
FIG. 1 is a schematic structural view of a three-way reversing isolation valve spool at the upper end;
FIG. 2 is a schematic diagram of a detection structure of a three-way reversing isolation valve with a valve core at the upper end;
FIG. 3 is a schematic structural view of a three-way reversing isolation valve spool at the lower end;
FIG. 4 is a schematic view of a detection structure of a three-way reversing isolation valve at the lower end of a valve core;
FIG. 5 is a schematic structural view of a lower valve body of the three-way reversing isolation valve;
FIG. 6 is a schematic axial side structure view of a lower valve body of the three-way reversing isolation valve;
FIG. 7 is a schematic view of the structure of the upper valve body of the three-way reversing isolation valve;
FIG. 8 is a schematic structural diagram of the shaft side of the three-way reversing isolation valve;
FIG. 9 is a schematic structural diagram of a three-way reversing isolation valve spool;
FIG. 10 is a schematic axial side view of a three-way directional isolation valve spool;
in the figure: 1. the device comprises a lower valve body, 2, a first radial sealing ring, 3, a second radial sealing ring, 4, a pressing cap, 5, a sealing joint nozzle, 6, a third radial sealing ring, 7, a sealing gasket, 8, a sealing ring, 9, a valve core, 10, an upper valve body, 11, a compression spring, 12, an axial sealing ring, 13, a workpiece to be detected, 14, a detection vacuum box, 101, a workpiece interface to be detected, 102, a first step through inner hole, 103, a helium interface, 104, an axial sealing ring installation groove, 901, a first radial sealing ring installation groove, 902, a second radial sealing ring installation groove, 1001, a compressed gas interface, 1002, a second step through inner hole, 1003 and a vacuum detection box interface.
Detailed Description
The invention is described in further detail below with reference to specific embodiments of the drawings. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
The three-way reversing isolation valve is shown in the attached drawing, and comprises a lower valve body 1, a first radial sealing ring 2, a second radial sealing ring 3, a pressing cap 4, a sealing seal nozzle 5, a third radial sealing ring 6, a valve core 9, an upper valve body 10, a compression spring 11 and an axial sealing ring 12.
The inside first ladder that is provided with of lower valve body 1 link up hole 102, the first ladder of lower valve body link up hole 102 down the terminal surface opening part be provided with helium interface 103, be provided with on the outer periphery of lower valve body 1 and wait to detect work piece interface 101, wait to detect work piece interface 101 and first ladder and link up hole 102 intercommunication, still be provided with axial sealing washer mounting groove 104 on the outer periphery of lower valve body 1, axial sealing washer 12 sets up inside axial sealing washer mounting groove 104, still be provided with first external screw thread and second external screw thread on the outer periphery of lower valve body 1.
A second step through inner hole 1002 is formed in the upper valve body 10, a compressed gas port 1001 is formed in an opening on the upper end face of the second step through inner hole 1002 of the upper valve body, a vacuum detection box port 1003 is formed in the outer circumferential surface of the upper valve body 10, the vacuum detection box port 1003 is communicated with the second step through inner hole 1002, and first internal threads are further formed in the inner surface of the second step through inner hole 1002 in the upper valve body 10;
the lower valve body 1 is fixedly connected with the upper valve body 10 through threads, and the lower valve body first step through inner hole 102 is communicated with the upper valve body second step through inner hole 1002; the valve core 9 is a stepped shaft, a second radial seal ring mounting groove 902 for accommodating a second radial seal ring 3 is formed in the outer circumferential surface of the valve core 9, a first radial seal ring mounting groove 901 for accommodating a first radial seal ring 2 is further formed in the upper end of the outer circumferential surface of the valve core 9, the first radial seal ring 2 is arranged in the first radial seal ring mounting groove 901, and the second radial seal ring 3 is arranged in the second radial seal ring mounting groove 902. The valve core 9 is arranged in a first step through inner hole 102 of the lower valve body 1 and a second step through inner hole 1002 of the upper valve body 10, and the compression spring 11 is arranged on the outer circumferential surface of the valve core 9.
The sealing nozzle 5 is internally provided with a through hole, the sealing nozzle 5 is arranged on the lower end face of the lower valve body 1, the pressing cap 4 is internally provided with a second internal thread, the pressing cap 4 is connected with the lower valve body 1 through the thread, and the pressing cap 4 is used for fixedly connecting the sealing nozzle 5 with the lower valve body 1.
Preferably, the number of the second radial seal ring mounting grooves 902 provided on the outer circumferential surface of the valve core 9 and accommodating the second radial seal rings 3 is 2, the second radial seal ring mounting grooves 902 are independently provided, and the number of the second radial seal rings 2 is 2, and the second radial seal rings are respectively provided in the second radial seal ring mounting grooves 902.
Preferably, the three-way reversing isolation valve further comprises a sealing ring 8, the sealing ring 8 is arranged in the second radial sealing ring installation groove 902 at the lowest end of the valve core 9, and the sealing ring 8 is arranged above the second radial sealing ring 3.
Preferably, two third radial sealing ring mounting grooves are formed in the outer circumference of the sealing nozzle 5, the third radial sealing ring mounting grooves are independently arranged, and the number of the third radial sealing rings 6 is 2, and the third radial sealing rings are respectively arranged in the third radial sealing ring mounting grooves.
Preferably, the three-way reversing isolation valve further comprises a sealing gasket 7, the sealing gasket 7 is arranged in a third radial sealing ring installation groove at the uppermost end of the sealing connector 5, and the sealing gasket 7 is arranged above the third radial sealing ring 6.
Claims (10)
1. A three-way reversing isolation valve is characterized by comprising a lower valve body, a second radial sealing ring, a pressing cap, a sealing joint nozzle, a valve core, an upper valve body and a compression spring;
a first step through inner hole is formed in the lower valve body, a helium interface is arranged at an opening of the lower end face of the first step through inner hole of the lower valve body, a workpiece interface to be detected is arranged on the outer circumferential surface of the lower valve body, and the workpiece interface to be detected is communicated with the first step through inner hole;
a second step through hole is formed in the upper valve body, a compressed gas interface is arranged at an opening of the upper end face of the second step through hole of the upper valve body, a vacuum detection box interface is arranged on the outer circumferential surface of the upper valve body, and the vacuum detection box interface is communicated with the second step through hole;
the lower valve body is fixedly connected with the upper valve body, and the first step through inner hole of the lower valve body is communicated with the second step through inner hole of the upper valve body; the valve core is a stepped shaft, a second radial sealing ring mounting groove for accommodating a second radial sealing ring is formed in the outer circular surface of the valve core, the valve core is arranged in a first stepped through inner hole of the lower valve body and a second stepped through inner hole of the upper valve body, the compression spring is arranged on the outer circumferential surface of the valve core, and the second radial sealing ring is arranged in the second radial sealing ring mounting groove in the outer circular surface of the valve core;
the sealing nozzle is internally provided with a through hole, the sealing nozzle is arranged on the lower end face of the lower valve body, the pressing cap is arranged on the outer circumferential faces of the sealing nozzle and the lower valve body, and the pressing cap is used for fixedly connecting the sealing nozzle and the lower valve body.
2. The three-way reversing isolation valve according to claim 1, wherein the number of the second radial seal ring mounting grooves for accommodating the second radial seal rings provided on the outer circumferential surface of the valve core is 2, the second radial seal ring mounting grooves are independently provided, and the number of the second radial seal rings is 2, and the second radial seal rings are respectively provided in the second radial seal ring mounting grooves.
3. The three-way reversing isolation valve according to claim 2, further comprising a sealing ring, wherein the sealing ring is arranged in the second radial sealing ring installation groove at the lowermost end of the valve core, and the sealing ring is arranged above the second radial sealing ring.
4. The three-way reversing isolation valve according to claim 1, further comprising a first radial seal ring, wherein a first radial seal ring mounting groove is further formed at the upper end of the outer circumferential surface of the valve core, and the first radial seal ring is disposed in the first radial seal ring mounting groove.
5. The three-way reversing isolation valve according to claim 1, further comprising an axial sealing ring, wherein an axial sealing ring mounting groove is further formed in the outer circumferential surface of the lower valve body, and the axial sealing ring is disposed in the axial sealing ring mounting groove.
6. The three-way reversing isolation valve of claim 1, wherein the outer circumference of the lower valve body is further provided with a first external thread, the inner surface of the second step through inner hole in the upper valve body is further provided with a first internal thread, and the lower valve body and the upper valve body are fixedly connected through threads.
7. The three-way reversing isolation valve of claim 1, further comprising a third radial seal ring, wherein a third radial seal ring mounting groove is formed in an outer circumference of the seal nozzle, and the third radial seal ring is disposed inside the third radial seal ring mounting groove.
8. The three-way reversing isolation valve according to claim 7, wherein two third radial seal ring mounting grooves are formed in the outer circumference of the sealing nozzle, the third radial seal ring mounting grooves are independently formed, and the number of the third radial seal rings is 2, and the third radial seal rings are respectively arranged in the third radial seal ring mounting grooves.
9. The three-way reversing isolation valve of claim 8, further comprising a sealing gasket disposed in the third radial seal ring mounting groove at the uppermost end of the sealing nipple, the sealing gasket disposed above the third radial seal ring.
10. The three-way reversing isolation valve according to claim 1, wherein a second external thread is further arranged on the outer circumferential surface of the lower valve body, a second internal thread is further arranged inside the upper pressing cap, and the lower valve body and the upper valve body are fixedly connected through threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210163842.3A CN114483716B (en) | 2022-02-22 | 2022-02-22 | Three-way reversing isolation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210163842.3A CN114483716B (en) | 2022-02-22 | 2022-02-22 | Three-way reversing isolation valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114483716A true CN114483716A (en) | 2022-05-13 |
| CN114483716B CN114483716B (en) | 2024-01-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210163842.3A Active CN114483716B (en) | 2022-02-22 | 2022-02-22 | Three-way reversing isolation valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114483716B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4399690A (en) * | 1979-12-04 | 1983-08-23 | Varian Associates, Inc. | Vacuum leak detector having single valve assembly |
| KR20030091859A (en) * | 2003-10-13 | 2003-12-03 | 주식회사 마이크로텍 | A method and apparatus for detecting a vacuum leakage |
| CN204592405U (en) * | 2015-03-24 | 2015-08-26 | 陕西法士特汽车传动集团有限责任公司 | A kind of gas path control valve |
| CN108362441A (en) * | 2017-12-19 | 2018-08-03 | 爱发科东方真空(成都)有限公司 | A kind of seal nipple, vacuum leak detector and detection method |
| CN109341973A (en) * | 2018-11-30 | 2019-02-15 | 广州新龙浩工业设备有限公司 | A kind of triple valve and inside and outside leak detection conversion equipment |
-
2022
- 2022-02-22 CN CN202210163842.3A patent/CN114483716B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4399690A (en) * | 1979-12-04 | 1983-08-23 | Varian Associates, Inc. | Vacuum leak detector having single valve assembly |
| KR20030091859A (en) * | 2003-10-13 | 2003-12-03 | 주식회사 마이크로텍 | A method and apparatus for detecting a vacuum leakage |
| CN204592405U (en) * | 2015-03-24 | 2015-08-26 | 陕西法士特汽车传动集团有限责任公司 | A kind of gas path control valve |
| CN108362441A (en) * | 2017-12-19 | 2018-08-03 | 爱发科东方真空(成都)有限公司 | A kind of seal nipple, vacuum leak detector and detection method |
| CN109341973A (en) * | 2018-11-30 | 2019-02-15 | 广州新龙浩工业设备有限公司 | A kind of triple valve and inside and outside leak detection conversion equipment |
Non-Patent Citations (1)
| Title |
|---|
| 丁永生;: "真空设备泄漏检测技术", 电子工艺技术, no. 04, pages 226 - 229 * |
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| CN114483716B (en) | 2024-01-30 |
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