CN219300047U - Pilot gas circuit - Google Patents
Pilot gas circuit Download PDFInfo
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- CN219300047U CN219300047U CN202320076782.1U CN202320076782U CN219300047U CN 219300047 U CN219300047 U CN 219300047U CN 202320076782 U CN202320076782 U CN 202320076782U CN 219300047 U CN219300047 U CN 219300047U
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- pilot gas
- gas circuit
- end cover
- pilot
- piston cavity
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Abstract
The utility model relates to the technical field of electromagnetic valves, in particular to a pilot gas circuit, which comprises: the air inlet is connected with an air source; the first pilot gas circuit is arranged in the valve body, one end of the first pilot gas circuit is communicated with the air inlet, and the other end of the first pilot gas circuit is communicated to the front end cover; the second pilot gas circuit is arranged in the valve body, one end of the second pilot gas circuit is communicated with the air inlet, and the other end of the second pilot gas circuit is communicated to the rear end cover; the two grooves are respectively arranged on the front end cover sealing gasket and the rear end cover sealing gasket, one groove is used for communicating the first pilot gas passage with the front piston cavity, and the other groove is used for communicating the second pilot gas passage with the rear piston cavity; and the control assembly is used for controlling the on-off of the first pilot gas circuit and/or the second pilot gas circuit. According to the utility model, the steering of the pilot gas path can be directly realized, so that the pilot gas does not need to pass through the end cover, and the punching operation of the end cover is avoided.
Description
The application is a divisional application of patent application number CN202222776005.6, the application date is 2022, 10 and 20, and the patent name is 'an electromagnetic valve end cover sealing gasket, a pilot gas circuit and an electromagnetic valve'.
Technical Field
The utility model relates to the technical field of electromagnetic valves, in particular to an electromagnetic valve end cover sealing gasket, a pilot gas circuit and an electromagnetic valve.
Background
The solenoid valve adopts valve body main bore to cooperate with the valve rod, and piston hole installation piston subassembly that front and back end cover processing corresponds is needed in addition to the guide gas that the solenoid valve body was passed through again to front and back piston department through the gas circuit structure that involves on the front and back end cover, promotes the piston and realizes the switching-over action of case.
In the prior art, the pilot electromagnetic valve is provided with a pilot air channel pilot assembly, and the pilot air is converted into pushing control piston action through the control of an electromagnetic coil. Therefore, piston holes are required to be formed in the front end cover and the rear end cover of the electromagnetic valve, the process holes which are required to be processed on the end covers because the flow direction of the pilot gas is required to be changed are also required to be plugged by using plugs after the process holes are processed, and the plugging has certain pressure resistance and sealing performance, so that the processing requirements on the process hole plugging holes are relatively high, the processing difficulty of the front end cover and the rear end cover of the electromagnetic valve is increased, the gas circuit characteristics of the design of the front end cover and the rear end cover are more, the processing cost and the material cost are relatively high, and the leakage risk of the electromagnetic valve is increased because of the process plugging holes.
The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The utility model provides a pilot gas circuit, which effectively solves the problems in the background technology.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: a solenoid valve pilot gas circuit comprising:
the air inlet is connected with an air source;
the first pilot gas circuit is arranged in the valve body, one end of the first pilot gas circuit is communicated with the air inlet, and the other end of the first pilot gas circuit is communicated to the front end cover;
the second pilot gas circuit is arranged in the valve body, one end of the second pilot gas circuit is communicated with the air inlet, and the other end of the second pilot gas circuit is communicated to the rear end cover;
the two grooves are respectively arranged on the front end cover sealing gasket and the rear end cover sealing gasket, one groove is used for communicating the first pilot gas passage with the front piston cavity, and the other groove is used for communicating the second pilot gas passage with the rear piston cavity;
and the control assembly is used for controlling the on-off of the first pilot gas circuit and/or the second pilot gas circuit.
Further, the control assembly is arranged on the first pilot gas path and used for controlling the on-off of the first pilot gas path, and the area of the front piston cavity is larger than that of the rear piston cavity;
when the first pilot gas circuit is disconnected, pilot gas enters the second pilot gas circuit from the gas inlet, enters the rear piston cavity through the slot, and pushes the valve core to move in a direction away from the rear end cover;
when the first pilot gas path is communicated, pilot gas enters the first pilot gas path and the second pilot gas path from the air inlet at the same time, passes through the two grooves and respectively enters the front piston cavity and the rear piston cavity, and at the moment, the pressure of the front piston cavity is larger than that of the rear piston cavity, so that the valve core is pushed to move in the direction away from the front end cover.
Further, the control assembly includes:
the pilot seat is arranged on the first pilot gas path and/or the second pilot gas path;
the movable iron core and the static iron core comprise a gap, the movable iron core can slide to be close to or far away from the static iron core, a coil is arranged outside the movable iron core, and when the coil is electrified, the movable iron core moves to the direction close to the static iron core;
the reset mechanism limits the movable iron core to move towards the direction close to the static iron core when the coil is not electrified;
when the coil is not electrified, the movable iron core plugs the first pilot gas circuit and/or the second pilot gas circuit.
Further, the first pilot gas circuit and the second pilot gas circuit are symmetrically arranged at the positions communicated with the front end cover and the rear end cover.
A solenoid valve, comprising:
the valve body is internally provided with a slidable valve core, when the valve core moves, switching action is realized, the two ends of the valve core are respectively provided with a front cover piston and a rear cover piston, and the valve body is correspondingly provided with a front piston cavity and a rear piston cavity;
the front end cover and the rear end cover are respectively arranged at the front piston cavity and the rear piston cavity of the valve body, and an end cover sealing gasket is arranged between the front end cover and the valve body and between the rear end cover and the valve body;
the pilot air hole is arranged on the valve body and comprises an air inlet, and two ends of the pilot air hole extend to the front end cover and the rear end cover respectively;
the end cover sealing gasket is provided with a slot which is communicated with the pilot air hole and the front piston cavity or the pilot air hole and the rear piston cavity;
and the control component is arranged at the pilot air hole and used for controlling the on-off of the pilot air hole.
Further, the control assembly is arranged between the pilot air hole and the front end cover, and the area of the front piston cavity is larger than that of the rear piston cavity;
when the control assembly is closed, pilot gas enters the pilot gas hole from the gas inlet, then enters the rear piston cavity through the slot at the rear end cover, and pushes the valve core to move in a direction away from the rear end cover;
when the control assembly is opened, pilot gas enters the pilot gas hole from the air inlet, and enters the front piston cavity and the rear piston cavity through two grooves respectively, and at the moment, the pressure of the front piston cavity is larger than that of the rear piston cavity, so that the valve core is pushed to move in the direction away from the front end cover.
Further, the pilot air holes extend to two ends of the front end cover and the rear end cover and are symmetrically arranged.
The beneficial effects of the utility model are as follows: according to the utility model, the grooving is arranged on the end cover sealing gasket, the grooving is communicated with the pilot air hole and the piston cavity respectively, and the steering of the pilot air passage can be directly realized, so that pilot air does not need to pass through the end cover, the punching operation of the end cover is avoided, the step of plugging a process hole by using a plug is omitted, the front end cover and the rear end cover can be used universally, the end cover is simply pressed and locked, the processing procedure, the assembly procedure and the plugging procedure are reduced, the production efficiency of a product is improved, the cost is reduced, the sealing point of the product is reduced, the leakage risk point is reduced, the product structure is more compact, and the installation and use space of the product is saved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a front view of an end cap gasket;
FIG. 2 is a front view of the pilot gas circuit;
FIG. 3 is a top view of the pilot gas circuit;
FIG. 4 is a schematic diagram of the control assembly disconnected;
FIG. 5 is a schematic diagram of the control assembly open;
FIG. 6 is a schematic diagram of the direction of motion of the pilot gas when the control assembly in the pilot gas circuit is disconnected;
FIG. 7 is a schematic view of the direction of movement of the pilot gas when the control assembly in the pilot gas circuit is open;
FIG. 8 is a schematic structural view of a solenoid valve;
fig. 9 is a top view of the solenoid valve.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated as being "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are directions or positional relationships based on the drawings are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements to be 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 utility model.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, or may be internal communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1: a solenoid valve end cap gasket 1 comprising:
the area of the main body 11 is larger than that of the piston cavity, the piston cavity on the valve body 31 is covered, and the main body 11 is arranged between the end cover and the piston cavity to seal the end cover and the piston cavity;
an extension end 12, wherein the extension end 12 extends to a pilot air hole 34 on the valve body 31 to cover the pilot air hole 34;
wherein, the main body 11 and the extension end 12 are provided with a slot 13, the slot 13 extends from the middle part of the main body 11 to the middle part of the extension end 12, and the slot 13 communicates the pilot air hole 34 with the piston cavity.
Through set up fluting 13 on end cover sealing pad 1, communicate fluting 13 with guide's gas pocket 34 and piston chamber respectively, can directly realize the turning to the guide's gas circuit, thereby need not in the guide's gas is through the end cover, the operation of punching to the end cover has been removed from, the step of using the end cap to carry out the shutoff to the technology hole is also saved simultaneously, make front end cover 32 and rear end cover 33 can be general, with the simple clamp plate installation locking of end cover can, machining procedures has been reduced, assembly process and shutoff process, product production efficiency is improved, the cost is reduced, product sealing point has been reduced, the risk point of revealing is reduced, the product structure is compacter, save the product installation usage space.
In the present embodiment, the groove 13 penetrates the end cap gasket 1 in the thickness direction.
Wherein two extending ends 12 are provided, the two extending ends 12 are symmetrically arranged, the slot 13 is arranged at one extending end 12, and the other extending end 12 is provided with an opening 121.
Through penetrating the slot 13 through the thickness direction of the sealing gasket, the other extending end 12 is provided with an opening 121, so that the sealing end of the end cover can be used in front and back, and the installation is more convenient.
As shown in fig. 2 to 7, the present embodiment further includes a solenoid valve pilot gas circuit 2, including:
the air inlet 21 is connected with an air source;
the first pilot gas circuit 22, the first pilot gas circuit 22 is set up in valve block 31, and one end communicates with air inlet 21, another end communicates to the front end cover 32;
the second pilot gas path 23, the second pilot gas path 23 is set up in valve block 31, and one end communicates with air inlet 21, another end communicates to the back end cover 33;
the two grooves 13 are respectively arranged on the front end cover 32 sealing gasket 1 and the rear end cover 33 sealing gasket 1, wherein one groove 13 is used for communicating the first pilot gas passage 22 with the front piston cavity 312, and the other groove 13 is used for communicating the second pilot gas passage 23 with the rear piston cavity 323;
and the control assembly 24 controls the on-off of the first pilot gas channel 22 and/or the second pilot gas channel 23 by the control assembly 24.
Through set up fluting 13 on end cover sealing pad 1, communicate fluting 13 with guide's gas pocket 34 and piston chamber respectively, can directly realize the turning to the guide's gas circuit, thereby need not in the guide's gas is through the end cover, the operation of punching to the end cover has been removed from, the step of using the end cap to carry out the shutoff to the technology hole is also saved simultaneously, make front end cover 32 and rear end cover 33 can be general, with the simple clamp plate installation locking of end cover can, machining procedures has been reduced, assembly process and shutoff process, product production efficiency is improved, the cost is reduced, product sealing point has been reduced, the risk point of revealing is reduced, the product structure is compacter, save the product installation usage space.
In this embodiment, the control assembly 24 is disposed on the first pilot gas path 22, and controls the on-off of the first pilot gas path 22, and the area of the front piston cavity 312 is larger than the area of the rear piston cavity 323;
when the first pilot gas path 22 is disconnected, pilot gas enters the second pilot gas path 23 from the gas inlet 21, enters the rear piston cavity 323 through the slot 13, and pushes the valve core 311 to move in a direction away from the rear end cover 33;
when the first pilot gas path 22 is communicated, pilot gas enters the first pilot gas path 22 and the second pilot gas path 23 from the gas inlet 21, passes through the two slots 13, and enters the front piston cavity 312 and the rear piston cavity 323 respectively, and at this time, the pressure of the front piston cavity 312 is greater than that of the rear piston cavity 323, so that the valve core 311 is pushed to move in a direction away from the front end cover 32.
By arranging the control assembly 24 on one side only, and simultaneously, the area of the front piston cavity 312 is larger than that of the rear piston cavity 323, when the front piston cavity 312 and the rear piston cavity 323 are communicated with pilot gas, the pressure of the front piston cavity 312 can be made to be larger, and therefore, the movement of the valve core 311 in two directions can be realized only through one control assembly 24.
Wherein the control assembly 24 comprises:
the pilot seat 241 is arranged on the first pilot gas path 22 and/or the second pilot gas path 23;
the movable iron core 242 and the static iron core 243, a gap is formed between the movable iron core 242 and the static iron core 243, the movable iron core 242 can slide to be close to or far away from the static iron core 243, a coil is arranged outside the movable iron core 242, and when the coil is electrified, the movable iron core 242 moves towards the direction approaching to the static iron core 243;
a reset mechanism 244, wherein the reset mechanism 244 limits the movable iron core 242 to move towards the static iron core 243 when the coil is not electrified;
when the coil is not energized, the movable iron core 242 seals the first pilot gas path 22 and/or the second pilot gas path 23.
As a preference to the above embodiment, the first pilot air passage 22 and the second pilot air passage 23 are symmetrically disposed at the positions communicating with the front end cover 32 and the rear end cover 33.
The first pilot gas passage 22 and the second pilot gas passage 23 are symmetrically arranged at the positions communicating with the front end cover 32 and the rear end cover 33, and correspond to the two symmetrical extension ends 12 on the end cover gasket 1, so that the end cover gasket 1 can be commonly used in front and back directions.
As shown in fig. 8 to 9, the present embodiment further includes a solenoid valve 3 including:
the valve body 31, the valve body 31 is internally provided with a slidable valve core 311, when the valve core 311 moves, the switching action is realized, the valve core 311 is respectively provided with a front cover piston and a rear cover piston at two ends, and the valve body 31 is correspondingly provided with a front piston cavity 312 and a rear piston cavity 323;
a front end cover 32 and a rear end cover 33, the front end cover 32 and the rear end cover 33 are respectively arranged at a front piston cavity 312 and a rear piston cavity 323 of the valve body 31, and an end cover sealing gasket 1 is arranged between the front end cover 32 and the rear end cover 33 and the valve body 31;
the pilot air hole 34, the pilot air hole 34 is set up on valve block 31, and include a air inlet 21, the both ends of the pilot air hole 34 extend to the front end cover 32 and rear end cover 33 department separately;
the end cover sealing gasket 1 is provided with a slot 13, and the slot 13 is communicated with the pilot air hole 34 and the front piston cavity 312 or the pilot air hole 34 and the rear piston cavity 323;
and the control assembly 24 is arranged at the pilot air hole 34 and controls the on-off of the pilot air hole 34.
Through set up fluting 13 on end cover sealing pad 1, communicate fluting 13 with guide's gas pocket 34 and piston chamber respectively, can directly realize the turning to the guide's gas circuit, thereby need not in the guide's gas is through the end cover, the operation of punching to the end cover has been removed from, the step of using the end cap to carry out the shutoff to the technology hole is also saved simultaneously, make front end cover 32 and rear end cover 33 can be general, with the simple clamp plate installation locking of end cover can, machining procedures has been reduced, assembly process and shutoff process, product production efficiency is improved, the cost is reduced, product sealing point has been reduced, the risk point of revealing is reduced, the product structure is compacter, save the product installation usage space.
Wherein the control assembly 24 may be controlled electromagnetically or other control techniques may be used.
Preferably, the control assembly 24 is disposed between the pilot air hole 34 and the front end cover 32, and the area of the front piston chamber 312 is larger than the area of the rear piston chamber 323;
when the control assembly 24 is closed, the pilot gas enters the pilot gas hole 34 from the gas inlet 21, then enters the rear piston cavity 323 through the slot 13 at the rear end cover 33, and pushes the valve core 311 to move in a direction away from the rear end cover 33;
when the control assembly 24 is opened, the pilot gas enters the pilot gas hole 34 from the gas inlet 21, and enters the front piston cavity 312 and the rear piston cavity 323 through the two grooves 13 respectively, and at this time, the pressure of the front piston cavity 312 is greater than that of the rear piston cavity 323, so as to push the valve core 311 to move in a direction away from the front end cover 32.
By having the area of the front piston chamber 312 larger than the area of the rear piston chamber 323, when the front piston chamber 312 and the rear piston chamber 323 are simultaneously in pilot gas communication, the pressure of the front piston chamber 312 can be made larger, so that the movement of the valve spool 311 in two directions can be realized by only one control assembly 24.
As a preferable example of the above embodiment, the pilot air holes 34 are symmetrically arranged to both ends of the front end cover 32 and the rear end cover 33, so that the end cover gasket 1 is commonly used in front and rear, and convenience is increased.
It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (4)
1. A pilot gas circuit, comprising:
the air inlet is connected with an air source;
the first pilot gas circuit is arranged in the valve body, one end of the first pilot gas circuit is communicated with the air inlet, and the other end of the first pilot gas circuit is communicated to the front end cover;
the second pilot gas circuit is arranged in the valve body, one end of the second pilot gas circuit is communicated with the air inlet, and the other end of the second pilot gas circuit is communicated to the rear end cover;
the two grooves are respectively arranged on the front end cover sealing gasket and the rear end cover sealing gasket, one groove is used for communicating the first pilot gas passage with the front piston cavity, and the other groove is used for communicating the second pilot gas passage with the rear piston cavity;
and the control assembly is used for controlling the on-off of the first pilot gas circuit and/or the second pilot gas circuit.
2. The pilot gas circuit according to claim 1, wherein the control assembly is arranged on the first pilot gas circuit and controls the on-off of the first pilot gas circuit, and the area of the front piston cavity is larger than that of the rear piston cavity;
when the first pilot gas circuit is disconnected, pilot gas enters the second pilot gas circuit from the gas inlet, enters the rear piston cavity through the slot, and pushes the valve core to move in a direction away from the rear end cover;
when the first pilot gas path is communicated, pilot gas enters the first pilot gas path and the second pilot gas path from the air inlet at the same time, passes through the two grooves and respectively enters the front piston cavity and the rear piston cavity, and at the moment, the pressure of the front piston cavity is larger than that of the rear piston cavity, so that the valve core is pushed to move in the direction away from the front end cover.
3. The pilot gas circuit of claim 2, wherein the control assembly comprises:
the pilot seat is arranged on the first pilot gas path and/or the second pilot gas path;
the movable iron core and the static iron core comprise a gap, the movable iron core can slide to be close to or far away from the static iron core, a coil is arranged outside the movable iron core, and when the coil is electrified, the movable iron core moves to the direction close to the static iron core;
the reset mechanism limits the movable iron core to move towards the direction close to the static iron core when the coil is not electrified;
when the coil is not electrified, the movable iron core plugs the first pilot gas circuit and/or the second pilot gas circuit.
4. The pilot gas circuit of claim 2, wherein the first pilot gas circuit and the second pilot gas circuit are symmetrically disposed in communication with the front end cap and the rear end cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320076782.1U CN219300047U (en) | 2022-10-20 | 2022-10-20 | Pilot gas circuit |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222776005.6U CN218377931U (en) | 2022-10-20 | 2022-10-20 | Electromagnetic valve end cover sealing gasket and electromagnetic valve |
| CN202320076782.1U CN219300047U (en) | 2022-10-20 | 2022-10-20 | Pilot gas circuit |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222776005.6U Division CN218377931U (en) | 2022-10-20 | 2022-10-20 | Electromagnetic valve end cover sealing gasket and electromagnetic valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219300047U true CN219300047U (en) | 2023-07-04 |
Family
ID=84932640
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320076782.1U Active CN219300047U (en) | 2022-10-20 | 2022-10-20 | Pilot gas circuit |
| CN202222776005.6U Active CN218377931U (en) | 2022-10-20 | 2022-10-20 | Electromagnetic valve end cover sealing gasket and electromagnetic valve |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222776005.6U Active CN218377931U (en) | 2022-10-20 | 2022-10-20 | Electromagnetic valve end cover sealing gasket and electromagnetic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN219300047U (en) |
-
2022
- 2022-10-20 CN CN202320076782.1U patent/CN219300047U/en active Active
- 2022-10-20 CN CN202222776005.6U patent/CN218377931U/en active Active
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| Publication number | Publication date |
|---|---|
| CN218377931U (en) | 2023-01-24 |
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