CN111536267A - Pneumatic control three-position three-way reversing valve - Google Patents
Pneumatic control three-position three-way reversing valve Download PDFInfo
- Publication number
- CN111536267A CN111536267A CN202010524743.4A CN202010524743A CN111536267A CN 111536267 A CN111536267 A CN 111536267A CN 202010524743 A CN202010524743 A CN 202010524743A CN 111536267 A CN111536267 A CN 111536267A
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- China
- Prior art keywords
- valve body
- valve
- guide ring
- cylinder
- seal support
- Prior art date
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Classifications
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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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
- F16K11/0712—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides comprising particular spool-valve sealing means
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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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
- F16K11/0716—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides with fluid passages through the valve member
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1225—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston with a plurality of pistons
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multiple-Way Valves (AREA)
- Sliding Valves (AREA)
Abstract
The invention discloses a pneumatic control three-position three-way reversing valve which comprises a valve body, wherein an upper sealing support, a middle sealing support and a lower sealing support are sequentially arranged in the valve body from top to bottom along the vertical direction, a first sealing ring and a second sealing ring are respectively arranged at two ends of the upper sealing support, the middle sealing support and the lower sealing support, and an air source port communicated with the upper sealing support, a testing port communicated with the middle sealing support and an exhaust port communicated with the lower sealing support are arranged in the valve body.
Description
Technical Field
The invention belongs to the technical field of valve bodies, and particularly relates to a pneumatic control three-position three-way reversing valve.
Background
The valve body is a main part in the valve and has different mechanical manufacturing methods according to pressure grades;
the direct-pressure type air tightness detector is of a negative pressure type, a positive pressure type and a positive pressure type, the working pressure is usually in a range of-100 kPa-2000 kPa, the traditional technology usually needs 2 or more electromagnetic valves (air control valves) to complete pressurization of a test product, detection and air path switching of exhaust, as shown in figure 1, the electromagnetic valves (air control valves) of different specifications are selected according to different requirements of the test pressure, so that different test valve groups are designed according to different requirements of the test pressure type by the existing direct-pressure type air tightness detector, the internal volume of the valve group is not uniform, the valve group is complex and various in design, and the manufacturing cost is high.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a pneumatic control three-position three-way reversing valve.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a pneumatic control tribit tee bend switching-over valve, includes the valve body, inside vertical direction of edge of valve body has set gradually upper seal support, middle seal support and lower seal support from top to bottom, the both ends of upper seal support, middle seal support and lower seal support are provided with first sealing washer and second sealing washer respectively, seted up in the valve body with the air supply mouth of upper seal support intercommunication, with the test port of middle seal support intercommunication and with the gas vent of lower seal support intercommunication.
Preferably, both ends of the valve body are respectively provided with an upper guide ring and a lower guide ring, a valve core is arranged inside the valve body in an inserting mode, the valve core can move inside the valve body, the upper portion of the valve core is sleeved with a spring, the top and the bottom of the spring are respectively provided with an upper spring retainer ring and a lower spring retainer ring, and the top of the valve core is further provided with a clamp spring.
Preferably, the valve body is internally provided with an upper guide ring above the upper sealing support, an upper guide ring pressing plate is arranged above the upper guide ring, and a lower guide ring is also arranged below the lower sealing support.
Preferably, the valve body is internally located an upper cylinder is arranged above the upper guide ring pressing plate, an upper piston is arranged inside the upper cylinder, a lower cylinder is arranged below the lower guide ring and inside the valve body, a lower piston is arranged inside the lower cylinder, and piston sealing rings are nested in the middle of the upper piston and the lower piston.
Preferably, the outer wall of the valve core is provided with an annular groove which is chamfered outwards.
Preferably, the upper cylinder and the lower cylinder are respectively provided with an upper cylinder air inlet and outlet hole and a lower cylinder air inlet and outlet hole.
The pneumatic control three-position three-way reversing valve can realize the gas path switching of pressurization, detection and exhaust of a test product, can test negative pressure and positive pressure, has a large working pressure range, is compact in structure and small in size, and effectively reduces the manufacturing cost of instruments.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a pneumatically controlled three-position three-way directional valve of the present invention;
FIG. 2 is a schematic diagram of a valve core structure of a pneumatic control three-position three-way reversing valve of the invention;
FIG. 3 is a schematic diagram of a middle sealing bracket structure of a pneumatic control three-position three-way reversing valve of the invention;
FIG. 4 is a gas path diagram of a conventional direct-pressure type gas tightness detector;
FIG. 5 is a functional symbol schematic diagram of a pneumatically controlled three-position, three-way directional valve of the present invention.
Reference numerals: 1. an upper cylinder; 2. a lower cylinder; 3. an upper guide ring press plate; 4. a valve body; 5. an upper piston; 6. a lower piston; 7. an upper guide ring; 8. a lower guide ring; 9. a middle sealing support; 10. an upper sealing bracket; 11. a lower seal holder; 12. an upper spring retainer ring; 13. a lower spring retainer ring; 14. a valve core; 15. a clamp spring; 16. a spring; 17. a first seal ring; 18. a second seal ring; 19. a piston seal ring; p, an air source port; A. a test port; r, an exhaust port; p1, air inlet and outlet holes of the upper cylinder; p2, air inlet and outlet holes of the lower cylinder.
Detailed Description
The following further describes a specific embodiment of a pneumatic control three-position three-way directional valve according to the present invention with reference to fig. 1 to 5. The pneumatically controlled three-position, three-way directional valve of the present invention is not limited to the description of the embodiments below.
Examples
The embodiment provides a concrete structure of a pneumatic control three-position three-way reversing valve, as shown in fig. 1-5, which comprises a valve body 4, and is characterized in that: an upper sealing support 10, a middle sealing support 9 and a lower sealing support 11 are sequentially arranged inside the valve body 4 from top to bottom along the vertical direction, a first sealing ring 17 and a second sealing ring 18 are respectively arranged at two ends of the upper sealing support 10, the middle sealing support 9 and the lower sealing support 11, and an air source opening P communicated with the upper sealing support 10, a testing opening A communicated with the middle sealing support 9 and an air outlet R communicated with the lower sealing support 11 are formed in the valve body 4.
The two ends of the valve body 4 are respectively provided with an upper guide ring 7 and a lower guide ring 8, a valve core 14 is arranged inside the valve body 4 in an inserting mode, the valve core 14 can move inside the valve body 4, the upper portion of the valve core 14 is sleeved with a spring 16, the top and the bottom of the spring 16 are respectively provided with an upper spring retainer ring 12 and a lower spring retainer ring 13, and the top of the valve core 14 is further provided with a clamp spring 15.
An upper guide ring 7 is further arranged above the upper sealing support 10 inside the valve body 4, an upper guide ring pressing plate 3 is arranged above the upper guide ring 7, and a lower guide ring 8 is further arranged below the lower sealing support 11 inside the valve body 4.
An upper cylinder 1 is arranged above the upper guide ring pressing plate 3 inside the valve body 4, an upper piston 5 is arranged inside the upper cylinder 1, a lower cylinder 2 is arranged below the lower guide ring 8 inside the valve body 4, a lower piston 6 is arranged inside the lower cylinder 2, and piston sealing rings 19 are nested in the middle of the upper piston 5 and the lower piston 6.
The outer wall of the valve core 14 is provided with an annular groove which is chamfered outwards.
The upper cylinder 1 and the lower cylinder 2 are respectively provided with an upper cylinder air inlet/outlet hole P1 and a lower cylinder air inlet/outlet hole P2.
By adopting the technical scheme:
when the lower cylinder air inlet and outlet hole P2 is inflated and the upper cylinder air inlet and outlet hole P1 is exhausted, the valve body 4 enters a pressurization state, at the moment, the air source hole P is communicated with the test hole A, and the exhaust hole R is closed.
When the upper cylinder air inlet and outlet hole P1 and the lower cylinder air inlet and outlet hole P2 are exhausted, the valve body 4 enters a detection state, the air source hole P is closed, the test hole A is closed, and the exhaust hole R is closed.
When the upper cylinder air inlet and outlet hole P1 is inflated, the lower cylinder air inlet and outlet hole P2 is exhausted, the valve body 4 enters an exhaust state, the air source hole P is closed, and the test hole A is communicated with the exhaust port R.
The working principle is as follows: referring to fig. 1-4, when the lower cylinder air inlet/outlet hole P2 is inflated and the upper cylinder air inlet/outlet hole P1 is exhausted, the lower piston 6 moves upward and pushes the valve core 14, the lower spring retainer 13, the spring 16 and the clamp spring 15 to move upward simultaneously until the top of the lower piston 6 contacts with the bottom of the lower guide ring 8, the lower piston 6 stops moving, the reversing valve enters a pressurized state, the air source hole P is communicated with the test hole a, and the exhaust hole R is closed;
when the upper cylinder air inlet and outlet hole P1 is exhausted, the lower cylinder air inlet and outlet hole P2 is exhausted, and the valve core 14 is fixed at the middle position under the action of the spring 16, the upper spring retainer ring 12 and the upper spring retainer ring 13 and cannot move up and down. The valve body 4 enters a detection state, the gas source port P is closed, the test port A is closed, and the exhaust port R is closed.
When the air inlet/outlet hole P1 of the upper cylinder is inflated, the air outlet hole P2 of the lower cylinder is exhausted, the upper piston 5 moves downwards and pushes the valve core 14, the upper spring retainer ring 12, the spring 16 and the clamp spring 15 to move downwards simultaneously until the bottom of the valve core 14 is contacted with the top of the lower piston 6, the upper piston 5 stops moving, the valve body 4 enters an exhaust state, the air source hole P is closed, and the test hole A is communicated with the exhaust hole R.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (6)
1. The utility model provides a pneumatic control tribit tee bend switching-over valve, includes valve body (4), its characterized in that: valve body (4) inside along vertical direction from top to bottom has set gradually upper seal support (10), middle seal support (9) and lower seal support (11), the both ends of upper seal support (10), middle seal support (9) and lower seal support (11) are provided with first sealing washer (17) and second sealing washer (18) respectively, seted up in valve body (4) with air supply port (P) of upper seal support (10) intercommunication, with test port (A) of middle seal support (9) intercommunication and with gas vent (R) of lower seal support (11) intercommunication.
2. A pneumatically controlled three position, three way reversing valve as defined in claim 1, wherein: the improved valve is characterized in that an upper guide ring (7) and a lower guide ring (8) are respectively arranged at two ends of the valve body (4), a valve core (14) is arranged inside the valve body (4) in an inserting mode, the valve core (14) can move inside the valve body (4), a spring (16) is sleeved on the upper portion of the valve core (14), an upper spring retainer ring (12) and a lower spring retainer ring (13) are respectively arranged at the top and the bottom of the spring (16), and a clamp spring (15) is further arranged at the top of the valve core (14).
3. A pneumatically controlled three position, three way reversing valve as defined in claim 2, wherein: the inner portion of the valve body (4) is located above the upper sealing support (10) and is further provided with an upper guide ring (7), an upper guide ring pressing plate (3) is arranged above the upper guide ring (7), and the inner portion of the valve body (4) is located below the lower sealing support (11) and is further provided with a lower guide ring (8).
4. A pneumatically controlled three position, three way reversing valve as defined in claim 3, wherein: valve body (4) inside is located go up guide ring clamp plate (3) top and be provided with cylinder (1), go up inside piston (5) that is provided with of cylinder (1), inside guide ring (8) below is provided with down cylinder (2) down being located of valve body (4), piston (6) are down provided with to cylinder (2) inside, go up piston (5) with piston (6) middle part all nestification has piston seal (19) down.
5. A pneumatically controlled three position, three way reversing valve as defined in claim 2, wherein: the outer wall of the valve core (14) is provided with an annular groove which is chamfered outwards.
6. A pneumatically controlled three position, three way reversing valve as defined in claim 4, wherein: and the upper cylinder (1) and the lower cylinder (2) are respectively provided with an upper cylinder air inlet and outlet hole (P1) and a lower cylinder air inlet and outlet hole (P2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010524743.4A CN111536267A (en) | 2020-06-10 | 2020-06-10 | Pneumatic control three-position three-way reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010524743.4A CN111536267A (en) | 2020-06-10 | 2020-06-10 | Pneumatic control three-position three-way reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111536267A true CN111536267A (en) | 2020-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010524743.4A Pending CN111536267A (en) | 2020-06-10 | 2020-06-10 | Pneumatic control three-position three-way reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111536267A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4202270A1 (en) * | 2021-12-22 | 2023-06-28 | Esbe Ab | Multi-port valve assembly |
-
2020
- 2020-06-10 CN CN202010524743.4A patent/CN111536267A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4202270A1 (en) * | 2021-12-22 | 2023-06-28 | Esbe Ab | Multi-port valve assembly |
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