CN203906425U - Air-control three-way reversing valve - Google Patents
Air-control three-way reversing valve Download PDFInfo
- Publication number
- CN203906425U CN203906425U CN201420245152.3U CN201420245152U CN203906425U CN 203906425 U CN203906425 U CN 203906425U CN 201420245152 U CN201420245152 U CN 201420245152U CN 203906425 U CN203906425 U CN 203906425U
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- piston
- valve core
- gas control
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- valve
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Abstract
The utility model relates to an air-control three-way reversing valve which is characterized by comprising a hollow reversing cavity (3). An air inlet, an air outlet and a reversing opening are respectively formed in the side surfaces of the reversing cavity (3), the reversing opening is positioned between the air inlet and the air outlet, a piston cavity (1) is mounted on the top of the reversing cavity (3), a signal inlet is formed in the piston cavity (1), and a base (5) is mounted at the bottom of the reversing cavity (3); a guide piston (82) is mounted in the reversing cavity (3), the top of the guide piston (82) is connected with an air-control piston (2), the air-control piston (2) is positioned in the piston cavity (1), and a space between the outer wall of the air-control piston (2) and the inner wall of the piston cavity (1) is sealed by air. The air-control three-way reversing valve has the advantages that a sealing structure of the reversing valve is a metal valve seat and V-shaped rubber compression structure, and accordingly shortcomings of high machining difficulty and easiness in air leakage of the traditional structure after sealing rings of the traditional structure are abraded can be overcome.
Description
Technical field
The utility model relates to a kind of gas control three-way diverter valve.
Background technique
Traditional gas control triplet commutation valve arrangement is as shown in Figure 1: when the input signal pressure of S mouth is during higher than Pneumatic valve switching point pressure, signal air pressure promotes gas control piston and reversing piston moves downward, and P mouth is to the conducting of A mouth, and E mouth is all obstructed to A mouth and P mouth; When the input signal pressure of S mouth is during lower than Pneumatic valve switching point pressure, gas control piston is under the reposition force effect of spring, and reversing piston moves upward, and P mouth is to A mouth and all not conductings of E, and E mouth is to the conducting of A mouth.The inner reversing piston of Pneumatic valve adopts the conventional spool valves structure of E type circle (or Y-shaped ring) circumferential seal.The product of this kind of structure requires reversing piston, E type circle, commutation chamber to have very high processing request adding man-hour, and when easily producing and leak gas or the phenomenon of collaborating after ring wear, working life is lower.
Model utility content
The purpose of this utility model is to provide that a kind of cost is low, zero leakage, working pressure are high and the gas control three-way diverter valve of long service life.
A kind of gas control three-way diverter valve, its specialization is: the commutation chamber that comprises hollow, on the side in this commutation chamber, have suction port, air outlet and commutation mouth, and this commutation mouth is between suction port and air outlet, top in this commutation chamber is provided with piston cavity, in this piston cavity, have signal input port, in the bottom in this commutation chamber, base is installed; In this commutation chamber, guide piston is installed, the top of this guide piston is connected with a gas control piston, and this gas control piston is in piston cavity and hermetic seal between the outer wall of this gas control piston and the inwall of piston cavity; On the other commutation cavity wall in air outlet, be provided with the first convex table type seal valve seat of ring-type, and on the other commutation cavity wall of suction port, be provided with the second convex table type seal valve seat of ring-type, and be equipped with a conical seal surface on each convex table type seal valve seat, and aforesaid guide piston is also connected with a valve core rod, on this valve core rod, be installed with respectively the first sealed valve core and the second sealed valve core, and on each sealed valve core, be equipped with a conical seal surface; Between the bottom of this valve core rod and base, Returnning spring is also installed in addition.
Wherein insert in guide piston from bottom one end of valve core rod, and the first sealed valve core riveting is at the middle part of valve core rod, and the second sealed valve core riveting is in the bottom of valve core rod.
Wherein the first sealed valve core and the second sealed valve core all adopt quality of rubber materials.
Wherein on valve core rod, be provided with spring seat.
Wherein commutate on the surface that chamber contacts with piston cavity and base seal ring is all installed.
Wherein between the outer wall of guide piston and the inwall in commutation chamber, seal ring is installed, and between gas control piston outer wall and piston cavity inwall, seal ring is also installed.
The utility model relates to a kind of gas control three-way diverter valve, and it adopts leading type working principle, is a kind of two-bit triplet selector valve that can accept air pressure signal and realize gas circuit commutation, can be applicable to pneumatic interlocking or safety control in instrument and meter industry.In selector valve of the present utility model, sealing configuration adopts the compression type structure of metal seat valve and V-type rubber, substitute the conventional spool valves structure that reversing piston adopts E type circle circumferential seal, solved that conventional construction difficulty of processing is large, the easy shortcoming of gas leakage after ring wear; Also have that cost is low simultaneously, zero leakage, feature that working pressure is high, be applicable to being applied in control valve industry.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of the utility model background technique;
Accompanying drawing 2 is structural representation of the present utility model;
Accompanying drawing 3 is the structural representation of double spool parts 8 in the utility model.
Embodiment
As shown in Figure 2,3, the utility model is a kind of gas control three-way diverter valve, comprise the commutation chamber 3 of hollow, on the side in this commutation chamber 3, have suction port, air outlet and commutation mouth, and this commutation mouth is between suction port and air outlet, on the top in this commutation chamber 3, piston cavity 1 is installed, in this piston cavity 1, has signal input port, in the bottom in this commutation chamber 3, base 5 is installed, in this commutation chamber 3, guide piston 82 is installed, the top of this guide piston 82 is connected with a gas control piston 2, and this gas control piston 2 is in the atmospheric pressure cavity 6 in the middle of piston cavity 1, and hermetic seal between the outer wall of this gas control piston 2 and the inwall of piston cavity 1, on other commutation chamber 3 inwalls in air outlet, be provided with the first convex table type seal valve seat 7 of ring-type, and on other commutation chamber 3 inwalls of suction port, be provided with the second convex table type seal valve seat 9 of ring-type, and be equipped with a conical seal surface on each convex table type seal valve seat, and aforesaid guide piston 82 is also connected with a valve core rod 84, on this valve core rod 84, be installed with respectively the first sealed valve core 83 and the second sealed valve core 85, and on each sealed valve core, be equipped with a conical seal surface, thereby in passing through, the contact of outer two conical seal surfaces coordinates can realize hermetic seal reliably, between the bottom of this valve core rod 84 and base 5, Returnning spring 4 is also installed in addition.
Wherein insert in guide piston 82 from bottom one end of valve core rod 84, and the first sealed valve core 83 rivetings are at the middle part of valve core rod 84, the second sealed valve core 85 rivetings are in the bottom of valve core rod 84, this first sealed valve core 83 and the second sealed valve core 85 all adopt quality of rubber materials, are provided with spring seat in addition on valve core rod 84.
Wherein commutate on the surface that chamber 3 contacts with piston cavity 1 and base 5 seal ring is all installed.Between the outer wall of guide piston 82 and the inwall in commutation chamber 3, seal ring is installed, and between gas control piston 2 outer walls and piston cavity 1 inwall, seal ring is also installed.
Below in conjunction with accompanying drawing 2,3, the utility model is described in more detail:
As shown in Figure 2,3, gas control three-way diverter valve complete machine structure is as follows: piston cavity 1, commutation chamber 3, base 5 have formed the shell mechanism of gas control three-way diverter valve; Guide piston 82, valve core rod 84, the first sealed valve core 83, the second sealed valve core 85, spring seat become as a whole by riveting, install seal ring composition double spool parts 8 simultaneously on guide piston 82.
Working principle of the present utility model is as follows:
In the time that the signal air pressure of S mouth input is greater than the switching pressure of gas control three-way diverter valve, the signal air pressure in atmospheric pressure cavity 6 produces downward displacement and promotes double spool parts 8 gas control piston 2 and moves downward, and Returnning spring 4 is compressed; Now the first sealed valve core 83 contacts with the first seal valve seat, and the second sealed valve core 85 and the second seal valve seat are thrown off, and P mouth (suction port) is to A mouth (commutation mouthful) conducting, E mouth (air outlet) and P mouth and all not conductings of A mouth.In the time that the signal air pressure of S mouth input is less than the switching point pressure of gas control three-way diverter valve, double spool parts 8 move upward under the effect of Returnning spring 4, and gas control piston 2 also moves upward simultaneously; Now the first sealed valve core 83 and the first seal valve seat are thrown off, and the second sealed valve core 85 contacts with the second seal valve seat, and E mouth is to the conducting of A mouth, P mouth and A mouth and all not conductings of E mouth.
On commutation chamber 3, be processed with three threaded couplings, for the connection of air pressure input and output; In piston cavity 1, be processed with a threaded coupling, connect for the input of control signal air pressure; The first seal valve seat and the second seal valve seat are directly processed on commutation chamber 3, and the first sealed valve core 83 and the second sealed valve core 85 are V-seal structure, and material adopts nitrile butadiene rubber, after seal valve seat contacts with sealed valve core, can ensure zero leakage; Between piston cavity 1, commutation chamber 3, base 5, adopt the sealing of O type circle; O type circle is housed to ensure the sealing in atmospheric pressure cavity 6 on gas control piston 2; Two O type circles are housed on the guide piston 82 of double spool parts 8, to ensure reliable sealing, there is leading role simultaneously; Sealed valve core and seal valve seat adopt V-structure, and after sealed valve core is working long hours, if there is wearing and tearing, spool can compensate for wear under the promotion of gas control piston 2, still realizes sealing.Overall design adopts leading type working principle, and small product size is little, range of regulation is wide.
Claims (6)
1. a gas control three-way diverter valve, it is characterized in that: the commutation chamber (3) that comprises hollow, on the side in this commutation chamber (3), have suction port, air outlet and commutation mouth, and this commutation mouth is between suction port and air outlet, on the top in this commutation chamber (3), piston cavity (1) is installed, in this piston cavity (1), have signal input port, in the bottom in this commutation chamber (3), base (5) is installed, in this commutation chamber (3), guide piston (82) is installed, the top of this guide piston (82) is connected with a gas control piston (2), and this gas control piston (2) is in piston cavity (1) and hermetic seal between the outer wall of this gas control piston (2) and the inwall of piston cavity (1), on other commutation chamber (3) inwall in air outlet, be provided with the first convex table type seal valve seat (7) of ring-type, and on other commutation chamber (3) inwall of suction port, be provided with the second convex table type seal valve seat (9) of ring-type, and be equipped with a conical seal surface on each convex table type seal valve seat, and aforesaid guide piston (82) is also connected with a valve core rod (84), on this valve core rod (84), be installed with respectively the first sealed valve core (83) and the second sealed valve core (85), and on each sealed valve core, be equipped with a conical seal surface, between the bottom of this valve core rod (84) and base (5), Returnning spring (4) is also installed in addition.
2. gas control three-way diverter valve as claimed in claim 1, it is characterized in that: wherein insert in guide piston (82) from bottom one end of valve core rod (84), and the first sealed valve core (83) riveting is at the middle part of valve core rod (84), the second sealed valve core (85) riveting is in the bottom of valve core rod (84).
3. gas control three-way diverter valve as claimed in claim 1, is characterized in that: wherein the first sealed valve core (83) and the second sealed valve core (85) all adopt quality of rubber materials.
4. gas control three-way diverter valve as claimed in claim 1, is characterized in that: wherein on valve core rod (84), be provided with spring seat.
5. gas control three-way diverter valve as claimed in claim 1, is characterized in that: on the surface that the chamber of wherein commutating (3) contact with piston cavity (1) and base (5), seal ring is all installed.
6. gas control three-way diverter valve as claimed in claim 1, it is characterized in that: wherein between the outer wall of guide piston (82) and the inwall in commutation chamber (3), seal ring is installed, and between gas control piston (2) outer wall and piston cavity (1) inwall, seal ring is also installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420245152.3U CN203906425U (en) | 2014-05-14 | 2014-05-14 | Air-control three-way reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420245152.3U CN203906425U (en) | 2014-05-14 | 2014-05-14 | Air-control three-way reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203906425U true CN203906425U (en) | 2014-10-29 |
Family
ID=51780708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420245152.3U Active CN203906425U (en) | 2014-05-14 | 2014-05-14 | Air-control three-way reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203906425U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994114A (en) * | 2014-05-14 | 2014-08-20 | 吴忠仪表有限责任公司 | Novel three-way reversing valve |
| TWI640690B (en) * | 2016-10-05 | 2018-11-11 | 日商Ｓｍｃ股份有限公司 | Intermittent air generation device |
| US11933424B2 (en) | 2021-07-19 | 2024-03-19 | Caterpillar Inc. | Gas admission valve including seal redundancy, and method of sealing a gas admission valve |
-
2014
- 2014-05-14 CN CN201420245152.3U patent/CN203906425U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994114A (en) * | 2014-05-14 | 2014-08-20 | 吴忠仪表有限责任公司 | Novel three-way reversing valve |
| TWI640690B (en) * | 2016-10-05 | 2018-11-11 | 日商Ｓｍｃ股份有限公司 | Intermittent air generation device |
| US11298714B2 (en) | 2016-10-05 | 2022-04-12 | Smc Corporation | Intermittent air-generating device |
| US11933424B2 (en) | 2021-07-19 | 2024-03-19 | Caterpillar Inc. | Gas admission valve including seal redundancy, and method of sealing a gas admission valve |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |