CN212429918U - Plate type pneumatic control valve - Google Patents
Plate type pneumatic control valve Download PDFInfo
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- CN212429918U CN212429918U CN202021008806.2U CN202021008806U CN212429918U CN 212429918 U CN212429918 U CN 212429918U CN 202021008806 U CN202021008806 U CN 202021008806U CN 212429918 U CN212429918 U CN 212429918U
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Abstract
The utility model discloses a plate type pneumatic control valve, which comprises a valve main body and a valve core assembly, wherein a piston cavity, an exhaust cavity, a working air cavity and an air inlet cavity are sequentially arranged in the valve main body from left to right; the side wall of the piston is provided with a pilot air port communicated with the piston cavity, an exhaust port communicated with the exhaust cavity, a working air port communicated with the working air cavity and an air inlet communicated with the air inlet cavity; the valve core assembly comprises a piston which is in sealing sliding fit in a piston cavity, a valve core which is fixedly connected with the piston, and an elastic element of which the left end is abutted against the valve core and the right end is abutted against the right side of the valve main body, the valve core is connected with a left sealing gasket and a right sealing gasket, the working air cavity and the exhaust cavity are communicated through a left air jet, and the air inlet cavity and the working air cavity are communicated through a right air jet. The utility model discloses direct mount need not to connect all kinds of pipelines in addition on the gas circuit valve plate, has greatly saved the space.
Description
Technical Field
The utility model relates to a board-like gas accuse valve.
Background
When the pneumatic control element is used for automatic electric gasification control operation on a train in the rail transit field, the pneumatic control element is used for controlling an actuator to perform opening and closing actions.
The control elements which are commonly available on the market are connected by using pipe fittings according to the air path control principle and are arranged at the position with relatively stable temperature in the vehicle. Due to the development of high-speed trains, new requirements such as more compact space and large temperature deviation of installation areas are provided. The conventional tubular connection and the pneumatic control valve designed at normal temperature cannot meet the requirements.
Disclosure of Invention
The utility model aims to solve the technical problem that overcome prior art's defect, provide a board-like gas accuse valve, its direct mount need not to connect all kinds of pipelines in addition on the gas circuit valve plate, has greatly saved the space.
In order to solve the technical problem, the technical scheme of the utility model is that: a plate-type pneumatic control valve comprising:
the valve comprises a valve main body, a piston cavity, an exhaust cavity, a working air cavity and an air inlet cavity are sequentially arranged in the valve main body from left to right; the side wall of the piston is provided with a pilot air port communicated with the piston cavity, an exhaust port communicated with the exhaust cavity, a working air port communicated with the working air cavity and an air inlet communicated with the air inlet cavity;
the valve core assembly comprises a piston hermetically and slidably arranged in a piston cavity, a valve core fixedly connected with the piston and an elastic element, wherein the left end of the elastic element is abutted against the valve core, and the right end of the elastic element is abutted against the right side of the valve main body; wherein the content of the first and second substances,
the working air cavity is communicated with the exhaust cavity through a left air jet, and the air inlet cavity is communicated with the working air cavity through a right air jet;
compressed air is input into the piston cavity through the pilot air port, the piston moves to the right under the pushing of the compressed air, the left sealing gasket blocks the left air jet to cut off an air channel between the working air port and the air exhaust port, the right sealing gasket is separated from the right air jet to enable the air inlet to be communicated with the working air port, and the elastic element is compressed;
the pilot air port has no compressed air input, the valve core assembly is reset leftwards under the resilience force of the elastic element, the right sealing gasket blocks the right air jet to cut off the air passage between the air inlet and the working air port, and the left sealing gasket is separated from the left air jet to make the working air port communicated with the air outlet.
Further provides a specific structure of the valve main body, wherein the valve main body comprises a valve body, a pilot cover plate and a support cover plate; wherein the content of the first and second substances,
the left end and the right end of the valve body are both in an open shape;
the pilot cover plate is arranged at the left end of the valve body to seal the left end of the valve body;
the support cover plate is installed at the right end of the valve body to seal the right end of the valve body.
Further, the elastic element comprises a return spring, and the return spring is sleeved at the far piston end of the valve core.
Further in order to enhance the sealing performance between the piston and the piston cavity, between the pilot cover plate and the valve body and between the support cover plate and the valve body, sealing rings are arranged between the piston and the piston cavity and/or between the pilot cover plate and the valve body and/or between the support cover plate and the valve body.
Further in order to make plate-type gas accuse valve be applicable to low temperature environment, the sealing washer is the low temperature sealing washer.
Further, in order to eliminate exhaust noise, a silencer is installed in the exhaust port.
Further, in order to prevent the valve core assembly from excessively moving to the right under the action of compressed air to cause excessive deformation of a left sealing gasket and influence on the sealing effect, the piston cavity and the piston are both in a convex shape, the left side of the piston cavity is a large cylindrical cavity, the right side of the piston cavity is a small cylindrical cavity, the large end of the piston is in sealing sliding fit in the large cylindrical cavity, and at least one part of the small end of the piston is in sealing sliding fit in the small cylindrical cavity.
After the technical scheme is adopted, when the pilot gas port admits air, compressed air pushes the piston to move rightwards, the piston drives the valve core, the left sealing gasket and the right sealing gasket to move rightwards, the elastic element is compressed simultaneously until the left sealing gasket blocks the left air jet, and the right sealing gasket is separated from the right air jet, so that the states that the air inlet is communicated with the working gas port and the working gas port is not communicated with the air outlet are formed, and an external main gas circuit connected with the air inlet applies work to the outside through the working gas port; when the pilot gas port does not have compressed air input, the elastic element pushes the valve core and the piston to move left, so that the right sealing gasket blocks the right air jet, the left sealing gasket is separated from the left air jet, thus forming the state that the air inlet is not communicated with the working air port and the working air port is communicated with the air outlet, the compressed air in the air inlet is sealed in the air inlet cavity, and the working air port is communicated with the atmosphere through the air outlet and is emptied; simultaneously in order to deal with the requirement that the temperature deviation of the installation area is big, the utility model discloses a low temperature sealing washer is chooseed for use to the sealing washer, guarantees to work steadily for a long time under the environment of big difference in temperature such as-50 ~60 ℃.
Drawings
Fig. 1 is a schematic structural view of a plate-type pneumatic control valve of the present invention;
fig. 2 is a cross-sectional view of fig. 1.
Detailed Description
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.
As shown in fig. 1 and 2, a plate-type pneumatic control valve includes:
the valve comprises a valve main body, wherein a piston cavity 1, an exhaust cavity 2, a working air cavity 3 and an air inlet cavity 4 are sequentially arranged in the valve main body from left to right; the side wall of the piston is provided with a pilot air port 5 communicated with the piston cavity 1, an exhaust port 6 communicated with the exhaust cavity 2, a working air port 7 communicated with the working air cavity 3 and an air inlet 8 communicated with the air inlet cavity 4;
the valve core assembly comprises a piston 9 which is in sealing sliding fit in a piston cavity 1, a valve core 10 which is fixedly connected with the piston 9, and an elastic element of which the left end is abutted against the valve core 10 and the right end is abutted against the right side of the valve main body, wherein a left sealing gasket 11 and a right sealing gasket 12 are connected on the valve core 10; wherein the content of the first and second substances,
the working air cavity 3 is communicated with the exhaust cavity 2 through a left air jet 13, and the air inlet cavity 4 is communicated with the working air cavity 3 through a right air jet 14;
compressed air is input into the piston cavity 1 through the pilot air port 5, the piston 9 moves to the right under the pushing of the compressed air, the left sealing gasket 11 blocks the left air jet 13 to cut off an air channel between the working air port 7 and the exhaust port 6, the right sealing gasket 12 is separated from the right air jet 14 to enable the air inlet 8 to be communicated with the working air port 7, and the elastic element is compressed;
the pilot air port 5 has no compressed air input, after the valve core assembly is reset leftwards under the resilience force of the elastic element, the right sealing gasket 12 blocks the right air jet 14 to cut off an air channel between the air inlet 8 and the working air port 7, and the left sealing gasket 11 is separated from the left air jet 13 to enable the working air port 7 to be communicated with the air outlet 6.
Specifically, when the pilot air port 5 is used for air intake, compressed air pushes the piston 9 to move right, the piston 9 drives the valve core 10, the left sealing gasket 11 and the right sealing gasket 12 to move right, and meanwhile, the elastic element is compressed until the left sealing gasket 11 blocks the left air jet 13 and the right sealing gasket 12 is separated from the right air jet 14, so that the states that the air inlet 8 is communicated with the working air port 7 and the working air port 7 is not communicated with the air outlet 6 are formed, and an external main air path connected with the air inlet 8 applies work to the outside through the working air port 7; when the pilot gas port 5 is not compressed air input, elastic element impels case 10 and piston 9 to move to the left for right seal gasket 12 blocks up right jet 14, and left seal gasket 11 breaks away from left jet 13, just so forms air inlet 8 and work gas port 7 not to communicate, the state that work gas port 7 and gas vent 6 are linked together, and compressed air in the air inlet 8 is sealed in air inlet chamber 4, and work gas port 7 is linked together through gas vent 6 and atmosphere, carries out the evacuation, the utility model discloses overall structure is fairly simple, and the inside control logic component that contains of valve main part can be directly with the utility model discloses install the valve plate on the gas circuit, need not to connect all kinds of pipelines in addition, greatly practiced thrift installation space.
As shown in fig. 1 and 2, the valve main body includes a valve body 15, a pilot cover plate 16, and a support cover plate 17; wherein the content of the first and second substances,
the left end and the right end of the valve body 15 are both in an open shape;
the pilot cover plate 16 is installed at the left end of the valve body 15 to seal the left end of the valve body 15;
the support cover 17 is installed at the right end of the valve body 15 to seal the right end of the valve body 15.
As shown in fig. 2, the elastic element includes a return spring 18, and the return spring 18 is sleeved on the distal piston end of the valve core 10.
In particular, the valve body of this construction facilitates installation of the valve cartridge assembly therein.
The left end of the return spring 18 is abutted against the right sealing gasket 12, and the right end is abutted against the supporting cover plate 17.
As shown in fig. 2, in order to enhance the sealing performance between the piston 9 and the piston chamber 1, between the pilot cover plate 16 and the valve body 15, and between the support cover plate 17 and the valve body 15, sealing rings 19 are provided between the piston 9 and the piston chamber 1, between the pilot cover plate 16 and the valve body 15, and between the support cover plate 17 and the valve body 15.
In this embodiment, in order to make the plate-type pneumatic control valve suitable for a low-temperature environment, the sealing ring 19 is a low-temperature sealing ring, so that the plate-type pneumatic control valve can stably work for a long time in an environment with a large temperature difference of-50 ℃ to 60 ℃. In the present embodiment, the cryogenic seal ring is prior art and will not be described in detail.
As shown in fig. 1, a silencer 20 is installed in the exhaust port in order to eliminate exhaust noise.
As shown in fig. 2, in order to make the piston 9 blocked by the step in the piston cavity 1 in the process of moving right to prevent the valve core assembly from moving right excessively under the action of compressed air and causing the left sealing gasket 11 to deform excessively to affect the sealing effect, the piston cavity 1 and the piston 9 are both in a convex shape, the left side of the piston cavity 1 is a large cylindrical cavity, the right side of the piston cavity 1 is a small cylindrical cavity, the large end of the piston 9 is in sealing sliding fit in the large cylindrical cavity, and at least a part of the small end of the piston 9 is in sealing sliding fit in the small cylindrical cavity.
The above-mentioned embodiments further explain in detail the technical problems, technical solutions and advantages solved by the present invention, and it should be understood that the above only is a specific embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "first", "second", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to which the term refers must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Claims (7)
1. A plate-type pneumatic control valve is characterized in that,
it includes:
the valve comprises a valve main body, wherein a piston cavity (1), an exhaust cavity (2), a working air cavity (3) and an air inlet cavity (4) are sequentially arranged in the valve main body from left to right; the side wall of the piston is provided with a pilot air port (5) communicated with the piston cavity (1), an exhaust port (6) communicated with the exhaust cavity (2), a working air port (7) communicated with the working air cavity (3) and an air inlet (8) communicated with the air inlet cavity (4);
the valve core assembly comprises a piston (9) which is in sealing sliding fit in a piston cavity (1), a valve core (10) which is fixedly connected with the piston (9), and an elastic element of which the left end is abutted against the valve core (10) and the right end is abutted against the right side of the valve main body, wherein a left sealing gasket (11) and a right sealing gasket (12) are connected on the valve core (10); wherein the content of the first and second substances,
the working air cavity (3) is communicated with the exhaust cavity (2) through a left air jet (13), and the air inlet cavity (4) is communicated with the working air cavity (3) through a right air jet (14);
compressed air is input into the piston cavity (1) through the pilot air port (5), after the piston (9) is pushed by the compressed air to move to the right, the left sealing gasket (11) blocks the left air jet (13) to cut off an air channel between the working air port (7) and the exhaust port (6), the right sealing gasket (12) is separated from the right air jet (14) to enable the air inlet (8) to be communicated with the working air port (7), and the elastic element is compressed;
the pilot air port (5) has no compressed air input, the valve core assembly is reset leftwards under the resilience force of the elastic element, the right sealing gasket (12) blocks the right air jet (14) to cut off an air channel between the air inlet (8) and the working air port (7), and the left sealing gasket (11) is separated from the left air jet (13) to enable the working air port (7) to be communicated with the air outlet (6).
2. The plate-type pneumatic control valve according to claim 1,
the valve body comprises a valve body (15), a pilot cover plate (16) and a support cover plate (17); wherein the content of the first and second substances,
the left end and the right end of the valve body (15) are both in an open shape;
the pilot cover plate (16) is installed at the left end of the valve body (15) to seal the left end of the valve body (15);
the support cover plate (17) is installed at the right end of the valve body (15) to seal the right end of the valve body (15).
3. The plate-type pneumatic control valve according to claim 1,
the elastic element comprises a return spring (18), and the return spring (18) is sleeved at the far piston end of the valve core (10).
4. The plate-type pneumatic control valve according to claim 2,
and a sealing ring (19) is arranged between the piston (9) and the piston cavity (1), and/or between the pilot cover plate (16) and the valve body (15), and/or between the support cover plate (17) and the valve body (15).
5. The plate-type pneumatic control valve according to claim 4,
the sealing ring (19) is a low-temperature sealing ring.
6. The plate-type pneumatic control valve according to claim 1,
a silencer (20) is installed in the exhaust port.
7. The plate-type pneumatic control valve according to claim 1,
piston chamber (1) and piston (9) all are protruding style of calligraphy, the left side in piston chamber (1) is big cylinder chamber, and the right side is little cylinder chamber, the sealed sliding fit of big tip of piston (9) is in big cylinder intracavity, the sealed sliding fit of at least part of the little tip of piston (9) is in little cylinder intracavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021008806.2U CN212429918U (en) | 2020-06-04 | 2020-06-04 | Plate type pneumatic control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021008806.2U CN212429918U (en) | 2020-06-04 | 2020-06-04 | Plate type pneumatic control valve |
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| Publication Number | Publication Date |
|---|---|
| CN212429918U true CN212429918U (en) | 2021-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021008806.2U Active CN212429918U (en) | 2020-06-04 | 2020-06-04 | Plate type pneumatic control valve |
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| CN (1) | CN212429918U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114215922A (en) * | 2021-11-25 | 2022-03-22 | 广东标顶技术股份有限公司 | Locomotive desicator drain valve and desicator |
-
2020
- 2020-06-04 CN CN202021008806.2U patent/CN212429918U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114215922A (en) * | 2021-11-25 | 2022-03-22 | 广东标顶技术股份有限公司 | Locomotive desicator drain valve and desicator |
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