CN210397809U - Plug-in type pilot valve - Google Patents
Plug-in type pilot valve Download PDFInfo
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- CN210397809U CN210397809U CN201920470019.0U CN201920470019U CN210397809U CN 210397809 U CN210397809 U CN 210397809U CN 201920470019 U CN201920470019 U CN 201920470019U CN 210397809 U CN210397809 U CN 210397809U
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Abstract
The utility model discloses a cartridge type pilot valve, which comprises a valve body internally provided with a valve cavity, wherein the valve body is provided with an air inlet, an air outlet and a middle port which are communicated with the valve cavity, the middle port is communicated with a reversing mechanism, a valve core is also arranged in the valve body, and a control mechanism is arranged in the reversing mechanism; the device has simple structure and convenient use, can quickly realize the conversion of the air circuit, simultaneously realizes the one-way passage, and is more favorable for the disassembly and the assembly.
Description
Technical Field
The utility model relates to a pneumatic flush coater technical field, concretely relates to cartridge formula pilot valve for pneumatic flush coater.
Background
A spray coater is a special coating device adopting a spray coating technology, and the principle is to control airflow to instantly push a gas distribution reversing device to reverse, so that a piston of a pneumatic motor can stably and continuously reciprocate. The sucked coating is pressurized, conveyed into a spray gun of a spraying machine through a high-pressure hose, instantly atomized by the spray gun and then released to the surface of an object to be coated. The spraying machine needs to provide compressed air frequently, the existing related device has a complex structure, can not well meet the requirements, and is inconvenient to disassemble and assemble when problems occur.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a cartridge formula pilot valve for pneumatic flush coater, simple structure, convenient to use can realize the conversion to the gas circuit fast to realize one-way passage simultaneously, be favorable to the dismouting simultaneously more.
The utility model relates to a cartridge type pilot valve, which comprises a valve body internally provided with a valve cavity, wherein the valve body is provided with an air inlet, an air outlet and a middle port which are communicated with the valve cavity, the middle port is communicated with a reversing mechanism, a valve core is also arranged in the valve body, and a control mechanism is arranged in the reversing mechanism; when gas enters from the gas inlet, the valve core closes the channels of the gas inlet and the gas outlet under the action of gas flow pressure, and the gas inlet is communicated with the middle port and acts on the control mechanism through the gas flow pressure; when gas enters from the intermediate port, the control mechanism acts on the valve core to close the passages of the gas inlet and the intermediate port and to communicate the intermediate port with the gas outlet.
Furthermore, the valve core comprises a first valve core and a second valve core, a first elastic restoring piece is arranged between the first valve core and the valve body, a second elastic restoring piece is arranged between the first valve core and the second valve core, when gas enters from the gas inlet, the first valve core closes a channel of the gas inlet and a channel of the gas outlet under the action of gas flow pressure, when gas enters from the middle port, the control mechanism acts on the second valve core, and the first valve core closes the channels of the gas inlet and the gas outlet and communicates the middle port with the gas outlet under the action of the second valve core.
Furthermore, a guide channel for the axial movement of the first valve core is arranged in the second valve core, and the second elastic restoring piece is arranged in the guide channel and is respectively connected with the first valve core and the second valve core.
Furthermore, a groove is formed in the top of the first valve core, and one end of the first elastic restoring piece is connected with the valve body. The other end is connected to the bottom of the groove.
Furthermore, a conical surface matched with the first valve core is arranged in the valve body.
Further, a nut which is matched with the first valve core and used for closing a passage of the air inlet and the air outlet is arranged in the valve cavity, and the conical surface is arranged on an inner ring of the nut.
Further, a first sealing ring is arranged between the nut and the valve body.
Further, a second sealing ring is arranged between the second valve core and the valve body.
Furthermore, the first valve core is made of soft materials.
Further, the valve body is made of stainless steel materials.
The utility model has the advantages that: the utility model discloses cartridge pilot valve, including the valve body that is equipped with the valve pocket in, be provided with on the valve body with air inlet, gas outlet and the centre mouth of valve pocket intercommunication, the centre mouth communicates with reversing mechanism, still be provided with the case in the valve body, be provided with control mechanism in the reversing mechanism; the device has simple structure and convenient use, can quickly realize the conversion of the air circuit, simultaneously realizes the one-way passage, and is more favorable for the disassembly and the assembly.
Drawings
The invention will be further described with reference to the following figures and examples:
FIG. 1 is a schematic structural view of the present invention in an operating state;
FIG. 2 is a schematic structural view of the present invention in a second operating state;
fig. 3 is a schematic structural diagram of a piston of the reversing mechanism.
Detailed Description
Fig. 1 is a schematic structural diagram of the present invention in an operating state. Fig. 2 is a schematic structural diagram of the present invention in an operating state, and fig. 3 is a schematic structural diagram of a piston of the reversing mechanism. The utility model relates to a cartridge type pilot valve, including the valve body 1 that is equipped with the valve pocket in, be provided with on the valve body 1 with air inlet 2, gas outlet 4 and the centre mouth 3 that the valve pocket communicates, centre mouth 3 communicates with reversing mechanism, still be provided with the case in the valve body, be provided with control mechanism in the reversing mechanism; the reversing mechanism comprises a mechanism body and a reversing piston 5 arranged between the mechanism body, and the reversing piston 5 divides an inner cavity of the mechanism body into a D cavity and an H cavity. When gas enters from the gas inlet 2, the valve core closes the channels of the gas inlet 2 and the gas outlet 4 under the action of gas flow pressure, and the gas inlet 2 is communicated with the middle port 3 and acts on the control mechanism through the gas flow pressure; when gas enters from the intermediate port 3, the control mechanism acts on the valve spool for closing the passages of the gas inlet port 2 and the intermediate port 3 and communicating the intermediate port 2 with the gas outlet port 4.
When the pilot valve is in a working state shown in fig. 1, air is introduced from the air inlet 2 to the intermediate port 3, the valve core closes the channels of the air inlet 2 and the air outlet 4 under the action of airflow pressure, the air inlet 2 is communicated with the intermediate port 3 and acts on the control mechanism through the airflow pressure, so that the air in the air inlet 2 cannot enter the air outlet 4. The air of the middle port 3 enters a D cavity of the reversing mechanism to enable the reversing piston 5 to move downwards; when the valve core is pushed by the reversing piston 5 and is in the state shown in fig. 2, the valve core moves upwards, the air inlet 2 is sealed and cannot pass through the middle port 3, the air in the D cavity passes through the middle port 3 to the air outlet 4, the air outlet 4 is connected with the atmosphere, and the reversing piston 5 moves upwards.
In this embodiment, the valve core includes a first valve core 7 and a second valve core 8, a first elastic restoring member 9 is disposed between the first valve core 7 and the valve body 1, a second elastic restoring member 10 is disposed between the first valve core 7 and the second valve core 8, when gas enters from the gas inlet, the first valve core 7 closes the passages of the gas inlet 2 and the gas outlet 4 under the action of gas flow pressure, when gas enters from the intermediate port 3, the control mechanism acts on the second valve core 8, and the first valve core 7 closes the passages of the gas inlet 2 and the gas outlet 4 and communicates the intermediate port 3 with the gas outlet 4 under the action of the second valve core 8. In the embodiment, the first valve core 7 and the second valve core 8 are arranged, so that the valve cores can be operated more conveniently and controlled more conveniently, and the support is inserted into the valve body and is convenient to disassemble and assemble.
In this embodiment, a guide channel for the axial movement of the first valve element 7 is provided in the second valve element 8, and the second resilient restoring member 10 is provided in the guide channel and connected to the first valve element and the second valve element, respectively.
In this embodiment, a groove is formed at the top of the first valve element 7, and one end of the first elastic restoring member 9 is connected to the valve body 1. The other end is connected to the bottom of the groove.
In this embodiment, a conical surface that is matched with the first valve core 7 is arranged in the valve body 1. The valve cavity is internally provided with a nut 11 which is matched with the first valve core 7 and used for closing a passage of the air inlet 2 and the air outlet 4, and the conical surface is arranged at the inner ring of the nut 11. The pilot valve consists of a valve body 1 and a nut, is integrated, is directly inserted and mounted, and is convenient to disassemble and assemble.
In this embodiment, a first seal ring 12 is disposed between the nut 11 and the valve body 1. And a second sealing ring 13 is arranged between the second valve core 8 and the valve body 1, so that the sealing effect is better.
In this embodiment, the first valve element 7 is made of a soft material. The first valve core 7 in the structure can be made of polytetrafluoroethylene or nylon, is made of a soft material, has a self-lubricating effect, and is smoother in the back-and-forth movement of the first valve core 7.
In this embodiment, the valve body 1 is made of stainless steel. Compared with the traditional copper pilot valve, the pilot valve is simpler in process and lower in cost.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (10)
1. Cartridge formula pilot valve is equipped with the valve body of valve pocket in including, its characterized in that: the valve body is provided with an air inlet, an air outlet and a middle port which are communicated with the valve cavity, the middle port is communicated with a reversing mechanism, a valve core is also arranged in the valve body, and a control mechanism is arranged in the reversing mechanism; when gas enters from the gas inlet, the valve core closes the channels of the gas inlet and the gas outlet under the action of gas flow pressure, and the gas inlet is communicated with the middle port and acts on the control mechanism through the gas flow pressure; when gas enters from the intermediate port, the control mechanism acts on the valve core to close the passages of the gas inlet and the intermediate port and to communicate the intermediate port with the gas outlet.
2. The cartridge pilot valve of claim 1, wherein: the valve core comprises a first valve core and a second valve core, a first elastic restoring piece is arranged between the first valve core and the valve body, a second elastic restoring piece is arranged between the first valve core and the second valve core, when gas enters from the gas inlet, the first valve core closes a channel of the gas inlet and a channel of the gas outlet under the action of gas flow pressure, when the gas enters from the middle port, the control mechanism acts on the second valve core, and the first valve core closes the channels of the gas inlet and the gas outlet and communicates the middle port with the gas outlet under the action of the second valve core.
3. The cartridge pilot valve of claim 2, wherein: the second valve core is internally provided with a guide channel for the first valve core to axially move, and the second elastic restoring piece is arranged in the guide channel and is respectively connected with the first valve core and the second valve core.
4. The cartridge pilot valve of claim 3, wherein: the top of the first valve core is provided with a groove, one end of the first elastic restoring piece is connected with the valve body, and the other end of the first elastic restoring piece is connected to the bottom of the groove.
5. The cartridge pilot valve of claim 4, wherein: and a conical surface matched with the first valve core is arranged in the valve body.
6. The cartridge pilot valve of claim 5, wherein: the valve cavity is internally provided with a nut which is matched with the first valve core and used for closing a passage of the air inlet and the air outlet, and the conical surface is arranged at the inner ring of the nut.
7. The cartridge pilot valve of claim 6, wherein: a first sealing ring is arranged between the nut and the valve body.
8. The cartridge pilot valve of claim 7, wherein: and a second sealing ring is arranged between the second valve core and the valve body.
9. The cartridge pilot valve of claim 8, wherein: the first valve core is made of soft materials.
10. The cartridge pilot valve of claim 9, wherein: the valve body is made of stainless steel materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920470019.0U CN210397809U (en) | 2019-04-09 | 2019-04-09 | Plug-in type pilot valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920470019.0U CN210397809U (en) | 2019-04-09 | 2019-04-09 | Plug-in type pilot valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210397809U true CN210397809U (en) | 2020-04-24 |
Family
ID=70337322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920470019.0U Active CN210397809U (en) | 2019-04-09 | 2019-04-09 | Plug-in type pilot valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210397809U (en) |
-
2019
- 2019-04-09 CN CN201920470019.0U patent/CN210397809U/en active Active
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