CN219734296U - Electromagnetic valve with inner and outer pilot valve seats - Google Patents
Electromagnetic valve with inner and outer pilot valve seats Download PDFInfo
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- CN219734296U CN219734296U CN202321282220.9U CN202321282220U CN219734296U CN 219734296 U CN219734296 U CN 219734296U CN 202321282220 U CN202321282220 U CN 202321282220U CN 219734296 U CN219734296 U CN 219734296U
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- valve body
- assembly
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- 238000007789 sealing Methods 0.000 claims abstract description 65
- 210000002445 nipple Anatomy 0.000 claims 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 13
- 239000000306 component Substances 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- Magnetically Actuated Valves (AREA)
Abstract
The utility model relates to a solenoid valve with an inner pilot valve seat and an outer pilot valve seat, which comprises a main valve body assembly, a pilot valve and a coil assembly; the valve body is provided with a pilot gas path in the valve body, and two ports of the pilot gas path in the valve body are respectively an air inlet and a valve body end face port; a sealing groove is formed in one surface of the valve seat facing the coil assembly, the bottom surface of the sealing groove comprises a small sealing nozzle, a valve seat end surface opening and a valve seat blind hole are formed in one surface of the valve seat facing the main valve body assembly, a pilot gas passage in the valve seat is formed in the valve seat, and two end openings of the pilot gas passage in the valve seat are respectively the valve seat end surface opening and the small sealing nozzle; when the main valve body assembly is connected with the pilot valve at a first angle, the end face opening of the valve body is connected with the end face opening of the valve seat; when the main valve body component is connected with the pilot valve at a second angle, the end face opening of the valve body is connected with the valve seat blind hole. The utility model can switch the inner pilot function or the outer pilot function by changing the mounting mode of the valve seat without adding parts or replacing an electromagnetic valve, and has high universality of use conditions.
Description
Technical Field
The utility model relates to the field of pneumatic control, in particular to a solenoid valve with an inner pilot valve seat and an outer pilot valve seat, wherein the solenoid valve uses compressed air as a working medium to transmit motion and power.
Background
Along with the introduction of modern mechanized production, the pneumatic electromagnetic valve is an electromechanical integrated product widely applied to the control field, and can be generally divided into an electromagnetic valve main valve body and a pilot valve which are assembled together; the prior art like product structure has the following problems:
1. the pilot form is single, and the universality of the use condition is poor;
2. the product reversing is unstable under the influence of the using pressure of the electromagnetic reversing valve.
Thus, the solenoid valve with pilot valve of the prior art has a place to lift.
Disclosure of Invention
The utility model aims to provide an electromagnetic valve with an inner pilot valve seat and an outer pilot valve seat, wherein an inner pilot gas passage and an outer pilot gas passage are added on the valve seat of the pilot valve, so that the technical problem in the prior art is solved.
In order to achieve the above purpose, the utility model provides a solenoid valve with an inner pilot valve seat and an outer pilot valve seat, wherein the solenoid valve comprises a main valve body assembly, a pilot valve and a coil assembly, and the main valve body assembly, the pilot valve and the coil assembly are sequentially connected; the main valve body assembly comprises a valve body, wherein the valve body is provided with a pilot gas path in the valve body, and two ports of the pilot gas path in the valve body are respectively an air inlet and a valve body end face port; the pilot valve comprises a valve seat, a sealing groove is formed in one surface of the valve seat facing the coil assembly, a sealing small nozzle is arranged on the bottom surface of the sealing groove, a valve seat end surface opening and a valve seat blind hole are formed in one surface of the valve seat facing the main valve body assembly, a valve seat inner pilot gas passage is formed in the valve seat, and two end openings of the valve seat inner pilot gas passage are respectively the valve seat end surface opening and the sealing small nozzle; when the main valve body assembly is connected with the pilot valve at a first angle, the end face opening of the valve body is connected with the end face opening of the valve seat; when the main valve body assembly is connected with the pilot valve at a second angle, the end face opening of the valve body is connected with the valve seat blind hole; the first angle and the second angle differ by 180 degrees; the coil component is movably connected with the small sealing nozzle and is used for opening and closing the air passage.
According to the electromagnetic valve with the inner and outer pilot valve seats, the valve seat further comprises a valve seat air inlet, the valve seat is further provided with a valve seat outer pilot air passage, and two ports of the valve seat outer pilot air passage are respectively the valve seat air inlet and the small sealing mouth.
According to the electromagnetic valve with the inner and outer pilot valve seats, which is disclosed by the preferred embodiment of the utility model, the electromagnetic valve further comprises two sealing rings, and the two sealing rings are respectively arranged on the valve seat end face opening and the valve seat blind hole.
According to the electromagnetic valve with the inner and outer pilot valve seats, which is the preferred embodiment of the utility model, the pilot valve further comprises a valve seat piston, a piston groove is formed in one surface of the valve seat, facing the main valve body assembly, of the valve seat piston, the valve seat piston is arranged in the piston groove, and a driving gas circuit is formed in the piston groove and connected with the sealing groove.
According to the electromagnetic valve with the inner pilot valve seat and the outer pilot valve seat, the coil assembly comprises a socket coil and an iron core assembly, the iron core assembly comprises a plug, and the plug is movably connected with the small sealing nozzle and used for opening and closing an air passage.
According to the electromagnetic valve with the inner pilot valve seat and the outer pilot valve seat, the main valve body assembly further comprises a rear cover assembly, a valve rod assembly and six O-shaped sealing rings, and the valve rod assembly is arranged in a middle through hole of the valve body; the rear cover component and the valve seat are respectively arranged at two ends of the middle through hole of the valve body; the six O-shaped sealing rings are arranged on the valve rod assembly.
The design concept of the utility model is as follows: the electromagnetic valve with the pilot valve is designed, and through the structural design of a part of a valve seat of the pilot valve in the electromagnetic valve, the valve seat part is provided with an air path required by inner pilot and outer pilot, and the inner pilot and outer pilot functions of the electromagnetic valve can be switched by changing different mounting modes of the valve seat.
Compared with the prior art, the utility model has the following advantages:
1. according to the utility model, the internal pilot function or the external pilot function can be switched by only changing the mounting mode of the valve seat without adding parts or replacing an electromagnetic valve, so that the universality of the use condition is high;
2. the switching of the reversing valve is not influenced by the pressure used by the reversing valve during external pilot operation, so that the reversing valve can work under the condition of low pressure or vacuum pressure, and the reversing operation of the product is more stable and reliable.
Of course, it is not necessary for any one embodiment to practice the teachings of the present utility model to have all of the above described advantages.
Drawings
FIG. 1 is a schematic cross-sectional view of a solenoid valve of the present utility model;
FIG. 2 is a schematic illustration of the connection of a valve seat and core assembly of the present utility model;
FIG. 3 is a schematic view of the connection of the sealing nozzle and the plug of the present utility model;
FIG. 4 is a schematic front view of a valve seat of the present utility model;
FIG. 5 is a schematic cross-sectional view of AA in FIG. 4;
FIG. 6 is a schematic cross-sectional view of a valve seat of the present utility model;
FIG. 7 is a schematic cross-sectional view of DD in FIG. 6;
fig. 8 is a schematic rear view of a valve seat of the present utility model.
Detailed Description
The present utility model will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1 and 2, the schematic cross-sectional view of the electromagnetic valve and the connection schematic diagram of the valve seat and the iron core assembly of the utility model are shown, the utility model is an electromagnetic valve with an inner pilot valve seat and an outer pilot valve seat, which uses compressed air as working medium to transfer motion and power, the valve seat is provided with an inner pilot gas path and an outer pilot gas path through the structural design of the valve seat of the pilot valve in the electromagnetic valve, namely the electromagnetic valve is provided with the inner pilot gas path and the outer pilot gas path, and the two functions of the inner pilot and the outer pilot of one electromagnetic valve can be switched as long as different installation modes of the valve seat are changed, so that the universality of the use condition is high; in fig. 1, the electromagnetic valve comprises a main valve body assembly 10, a pilot valve 20 and a coil assembly 30, wherein the main valve body assembly 10, the pilot valve 20 and the coil assembly 30 are sequentially connected.
As shown in fig. 1, the main valve body assembly 10 includes a valve body 11, the valve body 11 is provided with a middle through hole, an air inlet 1, a first working port 2, a second working port 4, a first air outlet 3 and a second air outlet 5, a valve body of the valve body 11 is provided with an inner valve body pilot air passage (not shown), two ends of the inner valve body pilot air passage are respectively provided with the air inlet 1 and an end surface port 112 of the valve body, the end surface port 112 of the valve body is positioned on the end surface of the valve body 11 connected with the pilot valve 20, and during operation, the inner valve body pilot air passage is always filled with compressed air transmitted from the air inlet 1.
Referring to fig. 2, 3, 4, 5, 6, 7 and 8, the pilot valve 20 includes a valve seat 21, a sealing groove 211 is formed on a surface of the valve seat 21 facing the coil assembly 30, a bottom surface of the sealing groove 211 includes a sealing small nozzle 212, as shown in fig. 3, the sealing small nozzle 212 protrudes from the bottom surface of the sealing groove 211, and an air port is formed in the middle of the sealing small nozzle 212; in fig. 4, a valve seat end opening 213 and a valve seat blind hole 214 are formed in the surface of the valve seat 21 facing the main valve body assembly 10; in fig. 5, the valve seat 21 is provided with an internal valve seat pilot gas channel 215, two ports of the internal valve seat pilot gas channel 215 are respectively the valve seat end surface port 213 and the sealing small mouth 212, and the internal valve seat pilot gas channel 215 form an internal pilot gas channel; in the embodiment of the present utility model, the pilot gas path 215 in the valve seat in fig. 5 is only the first half of the gas path of the pilot gas path 215 in the valve seat, and the second half is not visible in fig. 5, and is the gas path leading to the sealing nozzle 212.
The connection mode of the main valve body assembly 10 and the pilot valve 20 includes: the first connection mode is as follows: as shown in fig. 1, the main valve body assembly 10 is connected to the pilot valve 20 at a first angle, the valve body end opening 112 is connected to the valve seat end opening 213, and in operation, compressed air in the pilot air path in the valve body is transferred from the valve body 11 to the valve seat 21 to the small sealing nozzle 212; and a second connection mode: the main valve body assembly 10 is connected with the pilot valve 20 at a second angle, the valve body end face 112 is connected with the valve seat blind hole 214, and in operation, compressed air in a pilot gas path in the valve body is transmitted from the valve body 11 to the valve seat blind hole 214, the valve seat blind hole 214 is a non-communication hole, and the compressed air does not advance; in the embodiment of the present utility model, the difference between the first angle and the second angle is 180 degrees, that is, when the inner pilot gas path is not needed, only the connection angle between the main valve body assembly 10 and the pilot valve 20 is converted by 180 degrees, and at this time, the compressed air in the pilot gas path in the valve body stops in the valve seat blind hole 214; as shown in fig. 2 and 3, the coil assembly 30 is movably connected to the sealing nozzle 212 for opening and closing the air passage, which is the air passage through the sealing nozzle 212.
Referring to fig. 1 and 6, the valve seat 21 further includes a valve seat air inlet 6, the valve seat 21 further defines an outer valve seat pilot air passage 216, and two ports of the outer valve seat pilot air passage 216 are the valve seat air inlet 6 and the small sealing nozzle 212 respectively; the valve seat air inlet 6 is connected with an external air source, when an external pilot air path is needed to be used, the external air source is started, and compressed air of the external air source enters the small sealing nozzle 212 from the valve seat air inlet 6 finally; when the valve body assembly is in operation, if an external pilot gas passage is needed, the main valve body assembly 10 and the pilot valve 20 are connected by adopting a second angle, the valve body end face port 112 is connected with the valve seat blind hole 214, compressed air in the pilot gas passage in the valve body is transmitted from the valve body 11 to the valve seat blind hole 214 and cannot be transmitted to the small sealing nozzle 212, an external air source is started at the moment, and the compressed air of the external air source enters from the valve seat air inlet 6 to the small sealing nozzle 212.
As shown in fig. 2, the electromagnetic valve further includes two sealing rings 40, the two sealing rings 40 are respectively disposed on the valve seat end face opening 213 and the valve seat blind hole 214, and the two sealing rings 40 are used for sealing, so as to prevent the compressed air in the pilot gas path in the valve body from leaking and flowing out from the connection surface between the main valve body assembly 10 and the pilot valve 20.
Referring to fig. 1,2, 4 and 7, the pilot valve 20 further includes a valve seat piston 22, a piston groove 217 is formed on a surface of the valve seat 21 facing the main valve body assembly 10, the valve seat piston 22 is disposed in the piston groove 217, a driving air path 218 is formed on the piston groove 217 to connect the sealing groove 211, and in operation, compressed air enters the sealing groove 211 from the sealing small nozzle 212 and then enters the piston groove 217 through the driving air path 218, so that the compressed air forces the valve seat piston 22 to move.
As shown in fig. 1 and 3, the coil assembly 30 includes a socket coil 31 and an iron core assembly 32, the iron core assembly 32 includes a plug 321, the plug 321 is movably connected with the small sealing nozzle 212, so as to open and close the air path, as described above, the compressed air coming from the small sealing nozzle 212 includes the compressed air coming from the inner pilot air path of the valve body and the compressed air coming from the outer pilot air path 216 of the valve seat, so that the air path opened and closed by the plug 321 includes an inner pilot air path and an outer pilot air path.
As shown in fig. 1, the main valve body assembly 10 further includes a rear cover assembly 12, a valve rod assembly 13, and six O-rings 14, wherein the valve rod assembly 13 is disposed in a middle through hole of the valve body 11, one end of the valve rod assembly 13 is connected with the valve seat piston 22, and after the connection, the valve rod assembly 13 and the valve seat piston 22 are linked; the rear cover assembly 12 and the valve seat 21 are respectively arranged at two ends of the middle through hole of the valve body 11; the six O-shaped sealing rings 14 are arranged on the valve rod assembly 13 to form a plurality of cavities; in operation, compressed air enters the sealing groove 211 from the sealing small nozzle 212 and then enters the piston groove 217 through the driving air path 218, and the compressed air presses the valve seat piston 22 to move, as shown in fig. 1, to drive the valve rod assembly 13 to move leftwards, and reversing is completed after the valve rod assembly is in place.
The following description describes the gas path of the present utility model: the valve body 11 is provided with 5 threaded holes, one side of the valve body is 3, the other side of the valve body is 2, the middle threaded holes of the side of the valve body, which are defined as air inlets 1 and 2, the side of the valve body, which is close to the rear cover assembly 12, is defined as a working hole 2, the other side of the valve body, which is defined as a working hole 4, the working hole 2 and the working hole 4 are used for working, the rest 2 threaded holes are respectively defined as an air outlet 3 and an air outlet 5, and the rest 2 threaded holes are used for exhausting air and the side, which is close to the rear cover assembly 12, are air outlets 3; the air inlet 1 of the electromagnetic valve is filled with air, one air channel is divided into two parts, one part of the air channel is discharged from the working port 2 through a cavity separated by the O-shaped ring seal 14 on the valve rod assembly 13, the other part of the air channel is led to the small sealing nozzle 212 (the air channel is in an inner pilot state) of the valve seat 21 through an air channel hole in the valve body, when the socket coil 31 of the electromagnetic valve is electrified with rated voltage, the coil generates a magnetic field, a movable iron core in the iron core assembly 32 is attracted and moved, the movable iron core drives the plug 321 to leave the small sealing nozzle 212, the air channel of the small sealing nozzle 212 is communicated with the valve seat piston 22, the valve seat piston 22 is enabled to move towards the rear cover assembly 12 under the action of air pressure, the displacement of the valve seat piston 22 drives the valve rod assembly 13 to displace, the cavity separated by the O-shaped ring seal 14 on the valve rod assembly 13 is changed, the air channel is communicated with the working port 4, and the air channel is discharged from the working port 4, so that one reversing action is completed. When the coil is powered off and the magnetic field disappears, the movable iron core is reset by the spring force to drive the plug 321 to seal the small sealing nozzle 212, the air passage of the small sealing nozzle 212 is not communicated, the air pressure born by the valve seat piston 22 is reduced to be zero, the valve rod assembly 13 is reset by the spring force of the rear cover assembly 12, and the air inlet 1 is restored to be in an initial state and communicated with the working port 2, namely, the air passage is reset.
To change the internal pilot state into the external pilot state, the valve seat 21 is converted by 180 degrees, the hole corresponding to the internal pilot gas passage in the valve body of the original valve body 11 is blocked by the sealing ring 40 and the valve seat blind hole 214 on the valve seat 21, then the gas passage for driving the valve seat piston 22 to act needs to be input by the valve seat gas inlet 6 of the valve seat 21, the gas supply of the valve seat gas inlet 6 is the external pilot gas source, the gas passage of the valve seat gas inlet 6 is communicated with the sealing nozzle 212, when the socket coil 31 of the electromagnetic valve is electrified with rated voltage, the coil generates a magnetic field, so that the movable iron core in the iron core component 32 is attracted and moved, the movable iron core drives the plug 321 to leave the sealing nozzle 212, the gas passage of the sealing nozzle 212 is communicated with the valve seat piston 22, so that the valve seat piston 22 is moved towards the direction of the back cover component 12 by the air pressure, the displacement of the valve seat piston 22 drives the valve rod component 13, the cavity blocked by the O-shaped sealing ring 14 on the valve rod component 13 is changed, the gas inlet 1 is communicated with the working port 4, and the gas passage is discharged from the working port 4, and one-time reversing action is completed. When the coil is powered off and the magnetic field disappears, the movable iron core is reset by the spring force to drive the plug 321 to seal the small sealing nozzle 212, the air passage of the small sealing nozzle 212 is not communicated, the air pressure born by the valve seat piston 22 is reduced to be zero, the valve rod assembly 13 is reset by the spring force of the rear cover assembly 12, and the air inlet 1 is restored to be in an initial state and communicated with the working port 2, namely, the air passage is reset.
If the air pressure at the inlet of the valve body 11 is less than the minimum operating pressure of the solenoid valve (the minimum operating pressure is typically between 1bar and 3bar, which may vary from product to product) in the internal pilot condition, it is highly likely that the valve stem assembly 13 will not switch normally. Many times, even if the air pressure at the inlet of the valve body 11 is within the normal range of 6bar, if the working port 2 or the working port 4 of the solenoid valve is empty and no load such as a cylinder or a plug is connected, the internal pressure of the valve body 11 will be lower than 3bar, which may cause the valve rod assembly 13 of the valve body 11 to be not correctly switched. If it is desired that the solenoid valve be adapted for use in a low pressure environment, where the low pressure range includes vacuum (-1 bar to +3 bar), an external pilot state is used. The pilot pressure of the electromagnetic valve is provided by an independent air passage instead of the inlet air pressure of the valve body 11 during external pilot, the air pressure of the main air passage controlled by the valve body 11 is irrelevant to the pilot pressure, and the valve rod assembly 13 can be switched normally as long as the pilot pressure is ensured to be high enough.
It should be noted that, the terms "first," "second," and the like are used for defining the components, and are merely for convenience in distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, so they should not be construed as limiting the scope of the present utility model.
In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description.
Compared with the prior art, the utility model has the following advantages:
1. according to the utility model, the internal pilot function or the external pilot function can be switched by only changing the mounting mode of the valve seat without adding parts or replacing an electromagnetic valve, so that the universality of the use condition is high;
2. the switching of the reversing valve is not influenced by the pressure used by the reversing valve during external pilot operation, so that the reversing valve can work under the condition of low pressure or vacuum pressure, and the reversing operation of the product is more stable and reliable.
The above disclosure is only a few specific embodiments of the present utility model, but the present utility model is not limited thereto, and any changes that can be thought by those skilled in the art should fall within the protection scope of the present utility model.
Claims (6)
1. The electromagnetic valve with the inner and outer pilot valve seats is characterized by comprising a main valve body assembly, a pilot valve and a coil assembly, wherein the main valve body assembly, the pilot valve and the coil assembly are sequentially connected; wherein,,
the main valve body assembly comprises a valve body, wherein the valve body is provided with a pilot gas path in the valve body, and two ports of the pilot gas path in the valve body are respectively an air inlet and a valve body end face port;
the pilot valve comprises a valve seat, a sealing groove is formed in one surface of the valve seat facing the coil assembly, a sealing small nozzle is arranged on the bottom surface of the sealing groove, a valve seat end surface opening and a valve seat blind hole are formed in one surface of the valve seat facing the main valve body assembly, a valve seat inner pilot gas passage is formed in the valve seat, and two end openings of the valve seat inner pilot gas passage are respectively the valve seat end surface opening and the sealing small nozzle;
when the main valve body assembly is connected with the pilot valve at a first angle, the end face opening of the valve body is connected with the end face opening of the valve seat;
when the main valve body assembly is connected with the pilot valve at a second angle, the end face opening of the valve body is connected with the valve seat blind hole; the first angle and the second angle differ by 180 degrees;
the coil component is movably connected with the small sealing nozzle and is used for opening and closing the air passage.
2. The solenoid valve with an internal and external pilot valve seat according to claim 1, wherein said valve seat further comprises a valve seat air inlet, said valve seat further defines a valve seat external pilot air passage, and two ports of said valve seat external pilot air passage are said valve seat air inlet and said sealing nipple, respectively.
3. The solenoid valve with an internal and external pilot valve seat of claim 2, further comprising two sealing rings disposed on the valve seat end face port and the valve seat blind hole, respectively.
4. A solenoid valve having an inner and outer pilot valve seat as described in claim 3 wherein said pilot valve further comprises a valve seat piston, a piston groove is formed in a face of said valve seat facing said main valve body assembly, said valve seat piston is disposed in said piston groove, and said piston groove is formed with a drive gas path connecting said seal groove.
5. The solenoid valve having an inner and outer pilot valve seat of claim 4, wherein the coil assembly comprises a socket coil and core assembly, the core assembly comprising a plug movably connected to the sealing nipple for opening and closing the air passage.
6. The solenoid valve having an inner and outer pilot valve seat as set forth in claim 5 wherein said main valve body assembly further comprises a rear cover assembly, a valve stem assembly and six O-rings, said valve stem assembly being disposed in a central through bore of said valve body; the rear cover component and the valve seat are respectively arranged at two ends of the middle through hole of the valve body; the six O-shaped sealing rings are arranged on the valve rod assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321282220.9U CN219734296U (en) | 2023-05-25 | 2023-05-25 | Electromagnetic valve with inner and outer pilot valve seats |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321282220.9U CN219734296U (en) | 2023-05-25 | 2023-05-25 | Electromagnetic valve with inner and outer pilot valve seats |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219734296U true CN219734296U (en) | 2023-09-22 |
Family
ID=88025848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321282220.9U Active CN219734296U (en) | 2023-05-25 | 2023-05-25 | Electromagnetic valve with inner and outer pilot valve seats |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219734296U (en) |
-
2023
- 2023-05-25 CN CN202321282220.9U patent/CN219734296U/en active Active
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