CN116045059A

CN116045059A - Electromagnetic air valve

Info

Publication number: CN116045059A
Application number: CN202310021324.2A
Authority: CN
Inventors: 冯永东
Original assignee: Guangdong Nuonengtai Automation Technology Co ltd
Current assignee: Guangdong Nuonengtai Automation Technology Co ltd
Priority date: 2023-01-07
Filing date: 2023-01-07
Publication date: 2023-05-02

Abstract

The application relates to the field of electromagnetic valves, in particular to an electromagnetic valve which comprises a valve seat, a sliding plugging piece and a driving piece; the valve seat is provided with an air inlet, an air outlet and a valve cavity; the sliding plugging piece comprises a valve cover, a sliding frame and a first sealing gasket, wherein the valve cover is fixed in the valve cavity, an exhaust channel is formed in the valve cover, the air inlet is communicated with the exhaust channel, and the air outlet is communicated with the exhaust channel; the sliding frame is arranged in the valve cavity in a sliding way, and the driving piece is used for driving the sliding frame to slide towards a direction approaching or far away from the valve cover; the first sealing gasket is fixed in the sliding frame and used for sealing off the exhaust channel. The application promotes the leakproofness when the solenoid valve is closed.

Description

Electromagnetic air valve

Technical Field

The present application relates to the field of solenoid valves, and in particular, to a solenoid valve.

Background

Currently, solenoid valves are controlled, are automated basic elements for controlling fluids, and belong to actuators, not limited to hydraulic and pneumatic. For use in industrial control systems to adjust the direction, speed and other parameters of the medium. The solenoid valve can be matched with different circuits to realize expected control, and the control precision and flexibility can be ensured. Solenoid valves are many, and different solenoid valves function at different locations in the control system, most commonly one-way valves, safety valves, directional control valves, speed regulating valves, and the like.

The related art discloses a cleaning electromagnetic air valve, which comprises a valve seat, wherein the valve seat is provided with a valve cavity, an air inlet and an air outlet, and the air inlet and the air outlet are communicated with the valve cavity; the static valve core is arranged in the valve cavity and is provided with an exhaust channel communicated with the valve cavity; the movable valve core is slidably arranged in the valve cavity so as to switch and open or close the inner end of the air inlet and the inner end of the exhaust channel; the coil is wound on the valve seat to drive the movable valve core to move; the elastic piece is arranged between the static valve core and the movable valve core to drive the movable valve core to reset; the static valve core is provided with a filter cavity, filter materials are filled in the filter cavity, and the exhaust channel passes through the filter cavity so that gas passing through the exhaust channel is filtered by the filter materials.

With respect to the related art in the above, the inventors consider that there are the following drawbacks: the electromagnetic valve can filter gas, but has low overall sealing performance when the electromagnetic valve is closed.

Disclosure of Invention

In order to improve the tightness of the electromagnetic valve when the electromagnetic valve is closed, the application provides an electromagnetic air valve.

The electromagnetic air valve provided by the application adopts the following technical scheme:

an electromagnetic air valve comprises a valve seat, a sliding plugging piece and a driving piece; the valve seat is provided with an air inlet, an air outlet and a valve cavity; the sliding plugging piece comprises a valve cover, a sliding frame and a first sealing gasket, wherein the valve cover is fixed in the valve cavity, an exhaust channel is formed in the valve cover, the air inlet is communicated with the exhaust channel, and the air outlet is communicated with the exhaust channel; the sliding frame is arranged in the valve cavity in a sliding way, and the driving piece is used for driving the sliding frame to slide towards a direction approaching or far away from the valve cover; the first sealing gasket is fixed in the sliding frame and used for sealing off the exhaust channel.

By adopting the technical scheme, the driving piece drives the first sealing gasket to slide towards the direction close to or far away from the exhaust channel in the sliding process of driving the sliding frame, and when the first sealing gasket is abutted against the valve cover in the sliding process, the first sealing gasket has a plugging effect on the exhaust channel, so that the overall tightness of the air valve is improved, the air cannot be transmitted to the exhaust channel from the air inlet, the inflow of the air is blocked, and the valve seat is closed; when the first sealing gasket slides towards the direction far away from the valve cover, the direction sliding of the exhaust channel is relieved, the blocking effect on the exhaust channel is relieved, the air inlet and the air outlet are communicated with each other, and the air in the air inlet is transmitted to the air outlet through the exhaust channel, so that the valve seat is automatically opened.

Optionally, the sliding frame comprises a mounting column and a guide block, and the mounting column is fixedly connected with the guide block; the mounting column is provided with a mounting groove, and the first sealing gasket is mounted in the mounting groove; the valve seat is provided with a guide hole, the guide block penetrates through the guide hole, and the guide block is in sliding fit with the guide hole.

By adopting the technical scheme, the mounting groove has a positioning effect on the first sealing gasket, so that the efficiency of the first sealing gasket for workers to mount on the mounting column is improved, and the firmness of the first sealing gasket to mount on the mounting column is also improved; because the guide block is matched with the guide hole in a sliding way, the guide hole has a guide effect on the guide block, so that the sliding frame has a guide effect, and the sliding stability of the sliding frame in the valve seat is improved.

Optionally, the driving piece comprises a fixed iron core, a movable iron core and a first spring; the valve seat is internally and fixedly provided with a winding framework, the fixed iron core is fixed inside the winding framework, the movable iron core is slidably arranged inside the winding framework, and an enamelling coil is sleeved outside the winding framework; the first spring is sleeved on the movable iron core and used for driving the movable iron core to reset, and the top of the movable iron core is abutted to the guide block; a second spring is arranged between the valve cover and the first sealing gasket, one end of the second spring is abutted to the valve cover, and the other end of the second spring is abutted to the first sealing gasket.

By adopting the technical scheme, under the non-electrified state, the elastic force of the first spring bounces the movable iron core, so that the movable iron core is driven to slide towards the direction close to the valve cover, the movable iron core drives the guide block to slide towards the direction close to the valve cover, the guide block drives the mounting column and the first sealing gasket to slide towards the direction close to the valve cover, so that the first sealing gasket seals the exhaust channel, the air flow of the air inlet cannot flow channel, the air outlet of the air inlet is prevented, the valve seat is closed, and meanwhile, the first sealing gasket and the valve cover squeeze the second spring, so that the second spring is in a compressed state; when the electromagnetic valve is electrified, current generates a magnetic field through the enamelled coil, the coil magnetic field magnetizes the fixed iron core and the movable iron core to generate magnetic force, the fixed iron core attracts the movable iron core, so that the movable iron core is driven to slide towards the direction close to the fixed iron core, the movable iron core extrudes the first spring, so that the first spring is in a compressed state, meanwhile, the thrust action of the movable iron core on the sliding frame is relieved, meanwhile, the second spring in the compressed state has an elastic action on the first sealing gasket, so that the first sealing gasket and the sliding frame are pushed to slide towards the direction far away from the exhaust channel, the sliding frame drives the first sealing gasket to slide towards the direction far away from the exhaust channel, the blocking action of the first sealing gasket on the exhaust channel is relieved, the air inlet and the air outlet are kept communicated with each other, and the electromagnetic valve is started; so that the highest working frequency of the electromagnetic air valve is 200HZ, the highest air pressure is 1Mpa, the rated power is 1W, the service life can reach 1 hundred million times, and the electromagnetic air valve has the advantages of high pressure, high frequency, low power consumption and long service life; meanwhile, the structure of the valve seat comprises a sliding sealing part and a driving part for providing power, so that accumulated assembly tolerance caused by direct sealing of the movable iron core is avoided, and the consistency of the flow of the electromagnetic valve is ensured.

Optionally, a convex ring is fixedly arranged on the outer side wall of the movable iron core.

Through adopting above-mentioned technical scheme, the setting of bulge loop has increased the appeal after moving the iron core circular telegram.

Optionally, the tip of moving the iron core is fixed and is provided with the anticreep piece, the one end butt of first spring in the anticreep piece.

Through adopting above-mentioned technical scheme, move the gliding in-process of iron core orientation and be close to the direction that decides the iron core and drive the anticreep piece and slide towards the direction that is close to the iron core, the anticreep piece extrudes first spring at the in-process of motion to make with first spring in compression state, thereby store elastic potential energy.

Optionally, the valve seat further comprises a mounting piece, the winding framework is located in the mounting piece, a first limit groove is formed in the end portion of the mounting piece, and the other end of the first spring is abutted to the groove bottom of the first limit groove.

Through adopting above-mentioned technical scheme, the mounting has the positioning action to wire winding skeleton, and first spacing groove has the positioning action to the one end of first spring to make first spring at the in-process of compression, the tip of first spring can not be towards the direction skew of keeping away from the axis, thereby has prolonged the life of first spring.

Optionally, a first sealing ring is sleeved on the valve cover, and the first sealing ring is located between the valve cover and the valve seat.

By adopting the technical scheme, the first sealing ring increases the tightness between the valve cover and the valve seat, thereby increasing the tightness of the electromagnetic air valve.

Optionally, a first annular groove is formed in the valve cover, and the end part of the second spring is located in the first annular groove.

Through adopting above-mentioned technical scheme, first ring channel has the positioning action to the one end of second spring to make first spring at the in-process of compression, the tip of second spring can not be towards the direction skew of keeping away from the axis, thereby prolonged the life of second spring.

Optionally, a sliding hole is formed in the valve seat, and the sliding hole is communicated with the valve cavity; a manual switching device is arranged in the sliding hole and comprises a sliding piece, a third spring and a baffle plate, and the sliding piece is in sliding fit with the sliding hole; one end of the third spring is abutted against the inner side wall of the valve cavity, the other end of the third spring is abutted against the end part of the manual switch, the baffle plate is fixed on the valve seat, and the end part of the sliding piece is abutted against the baffle plate; and one end of the manual switch, which is close to the third spring, is provided with an inclined plane, and the inclined plane is used for driving the movable iron core to slide.

Through adopting the technical scheme, under the power failure state, the sliding part is manually pressed inwards, the inclined surface of the sliding part can prop against the top of the movable iron core, the movable iron core is pressed downwards, so that the electromagnetic air valve is electrified, current generates a magnetic field through the enamelled coil, the coil magnetic field simultaneously magnetizes the fixed iron core and the movable iron core to generate magnetic force, the movable iron core is downwards attracted to the fixed iron core, so that the movable iron core moves towards the direction close to the fixed iron core, the movable iron core extrudes the first spring, so that the first spring is in a compressed state, the thrust action of the movable iron core on the sliding frame is relieved, and meanwhile, the second spring in the compressed state has an elastic action on the first sealing gasket, so that the first sealing gasket and the sliding frame are pushed to slide towards the direction away from the exhaust channel, the sealing action of the first sealing gasket on the exhaust channel is relieved, the air inlet and the air outlet are kept communicated mutually, and the electromagnetic air valve is started; after the sliding part is released, the third spring rebounds to reset the sliding part, the movable iron core loses the pressure of the sliding part, and the first spring rebounds to drive the movable iron core to reset, so that the function of resetting the movable iron core to close the electromagnetic valve after the electromagnetic valve is powered off is realized, and the electromagnetic valve can be conveniently and manually opened and closed under the power failure state.

Optionally, a second limiting groove is formed in the sliding piece, and one end of the third spring is located in the second limiting groove.

Through adopting above-mentioned technical scheme, the second spacing groove has spacing effect to the one end of third spring to make the difficult emergence of third spring warp.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the driving piece drives the first sealing gasket to slide towards the direction close to or far away from the exhaust channel in the sliding process of driving the sliding frame, and when the first sealing gasket is abutted against the valve cover in the sliding process, the first sealing gasket has a blocking effect on the exhaust channel, so that the overall tightness of the air valve is improved, the air cannot be transmitted to the exhaust channel from the air inlet, the inflow of the air is blocked, and the valve seat is closed; when the first sealing gasket slides towards the direction far away from the valve cover, the sliding of the direction of the exhaust channel is released, the blocking effect of the exhaust channel is released, the air inlet and the air outlet are communicated with each other, and the air in the air inlet is transmitted to the air outlet through the exhaust channel, so that the valve seat is automatically opened;

2. the mounting groove has a positioning effect on the first sealing gasket, so that the efficiency of the first sealing gasket for workers to mount on the mounting column is improved, and the firmness of the first sealing gasket to mount on the mounting column is also improved; the guide block is in sliding fit with the guide hole, and the guide hole has a guide effect on the guide block, so that the guide effect on the sliding frame is realized, and the sliding stability of the sliding frame in the valve seat is improved;

3. under the non-energized state, the elastic force of the first spring bounces the movable iron core, so that the movable iron core is driven to slide towards the direction close to the valve cover, the movable iron core drives the guide block to slide towards the direction close to the valve cover, the guide block drives the mounting column and the first sealing gasket to slide towards the direction close to the valve cover, so that the first sealing gasket seals the exhaust channel, the air flow of the air inlet cannot flow the air outlet, the valve seat is closed, and meanwhile, the first sealing gasket and the valve cover squeeze the second spring, so that the second spring is in a compressed state; when the electromagnetic valve is electrified, current generates a magnetic field through the enamelled coil, the coil magnetic field magnetizes the fixed iron core and the movable iron core to generate magnetic force, the fixed iron core attracts the movable iron core, so that the movable iron core is driven to slide towards the direction close to the fixed iron core, the movable iron core extrudes the first spring, so that the first spring is in a compressed state, meanwhile, the thrust action of the movable iron core on the sliding frame is relieved, meanwhile, the second spring in the compressed state has an elastic action on the first sealing gasket, so that the first sealing gasket and the sliding frame are pushed to slide towards the direction far away from the exhaust channel, the sliding frame drives the first sealing gasket to slide towards the direction far away from the exhaust channel, the blocking action of the first sealing gasket on the exhaust channel is relieved, the air inlet and the air outlet are kept communicated with each other, and the electromagnetic valve is started; so that the highest working frequency of the electromagnetic air valve is 200HZ, the highest air pressure is 1Mpa, the rated power is 1W, the service life can reach 1 hundred million times, and the electromagnetic air valve has the advantages of high pressure, high frequency, low power consumption and long service life; meanwhile, the structure of the valve seat comprises a sliding sealing part and a driving part for providing power, so that accumulated assembly tolerance caused by direct sealing of the movable iron core is avoided, and the consistency of the flow of the electromagnetic valve is ensured.

Drawings

Fig. 1 is a schematic structural view of an electromagnetic valve in embodiment 1 of the present application.

Fig. 2 is a half sectional view of the electromagnetic gas valve in embodiment 1 of the present application.

Fig. 3 is a schematic diagram showing the assembly relationship of the valve seat in embodiment 1 of the present application.

Fig. 4 is a schematic diagram showing the assembly relationship of the driving member in embodiment 1 of the present application.

Fig. 5 is a half sectional view of the electromagnetic gas valve in embodiment 2 of the present application.

Fig. 6 is an enlarged schematic view of portion a of fig. 5.

Fig. 7 is a half sectional view of the electromagnetic valve in embodiment 3 of the present application.

Fig. 8 is a half sectional view of the electromagnetic valve in embodiment 4 of the present application.

Reference numerals illustrate:

1. a valve body; 101. an air inlet; 102. an air outlet; 103. a valve cavity; 104. a positioning groove; 105. a second gasket; 106. a guide hole; 107. a second annular groove; 108. a second seal ring; 109. a clamping block; 110. a slip hole; 2. a mounting member; 21. a connecting pipe; 211. a first limit groove; 22. round iron pipe; 23. a guide ring; 3. a winding framework; 31. an enamelled coil; 34. an insulating tape; 35. a third annular groove; 36. a third seal ring; 4. a housing; 41. a clamping groove; 42. a needle stand; 5. a valve cover; 51. an exhaust passage; 52. a first seal ring; 53. a second spring; 54. a first annular groove; 6. a carriage; 61. a mounting column; 611. a mounting groove; 612. a clearance groove; 62. a guide block; 7. a first gasket; 8. fixing an iron core; 9. a movable iron core; 91. an anti-falling block; 92. a convex ring; 10. a first spring; 11. a manual switching device; 111. a slider; 112. a third spring; 113. a baffle; 114. a fourth seal ring; 115. the second limit groove; 116. a fourth annular groove; 117. an exhaust port; 118. and (5) an inclined plane.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-4.

Example 1

Embodiment 1 of the application discloses an electromagnetic air valve. Referring to fig. 1 and 2, the solenoid valve includes a valve seat, a sliding closure member, and a driver member. The valve seat comprises a valve body 1, an air inlet 101, an air outlet 102 and a valve cavity 103 are formed in the valve body 1, the valve cavity 103 is located in the valve body 1, one end of the valve cavity 103 is arranged in an opening mode, and the air inlet 101 and the air outlet 102 are communicated with the valve cavity 103. The sliding plugging piece slides and sets up in valve cavity 103 inside, and the sliding plugging piece is used for shutoff air inlet 101 and gas outlet 102, and the driving piece sets up in the disk seat, and the driving piece is used for driving the sliding plugging piece and slides towards the direction that is close to or keeps away from the disk seat.

Referring to fig. 1, a positioning groove 104 is formed in the surface of the valve body 1, and a second gasket 105 is installed in the positioning groove 104. The positioning groove 104 has a positioning effect on the second sealing gasket 105, so that the efficiency of installing the second sealing gasket 105 on the valve body 1 by workers is improved.

Referring to fig. 2 and 3, the sliding plugging member comprises a valve cover 5, a sliding frame 6 and a first sealing gasket 7, wherein the valve cover 5 is fixed in a valve cavity 103, a first sealing ring 52 is sleeved on the valve cover 5, the first sealing ring 52 is positioned between the valve cover 5 and a valve seat, and the tightness between the valve cover 5 and the valve seat is improved. The valve cover 5 is provided with an exhaust passage 51, the air inlet 101 is communicated with the exhaust passage 51, the air outlet 102 is communicated with the exhaust passage 51, and the air flowing in through the air inlet 101 is conveniently transmitted to the air outlet 102 through the exhaust passage 51. The sliding frame 6 is slidably arranged in the valve cavity 103, the first sealing gasket 7 is installed inside the sliding frame 6, the driving piece is used for driving the sliding plugging piece to slide towards a direction close to or far away from the valve cover 5, and the first sealing gasket 7 is used for plugging the exhaust channel 51. The driving piece is at the gliding in-process of drive carriage 6, and carriage 6 drives first sealed pad 7 and slides towards the direction that is close to or keeps away from exhaust passage 51, and when first sealed pad 7 was in gliding in-process butt in valve gap 5, first sealed pad 7 had the shutoff effect to exhaust passage 51 to increased the holistic leakproofness of pneumatic valve, so that gas can't convey to exhaust passage 51 from air inlet 101, thereby blockked the inflow of gas, and then realized closing to valve body 1. When the first gasket 7 slides in a direction away from the valve cover 5, the sliding of the exhaust passage 51 is released, the blocking of the exhaust passage 51 is released, and the air inlet 101 and the air outlet 102 are kept in communication with each other, so that the air from the air inlet 101 is transmitted to the air outlet 102 through the exhaust passage 51, and the automatic opening of the valve body 1 is realized.

Referring to fig. 3, specifically, the carriage 6 includes a mounting post 61 and two guide blocks 62, and the two guide blocks 62 are integrally formed at one end of the mounting post 61 away from the valve cover 5. Two penetrating guide holes 106 are formed in the valve body 1, the two guide blocks 62 respectively penetrate through the two guide holes 106, and the two guide blocks 62 respectively slidably cooperate with the two guide holes 106. The two guide holes 106 respectively guide the two guide blocks 62, thereby guiding the sliding frame 6, and improving the sliding stability of the sliding frame 6 in the valve body 1.

Referring to fig. 2 and 3, the mounting post 61 has a mounting groove 611 formed at one end thereof adjacent to the valve cover 5, the mounting groove 611 having a depth greater than the height of the first packing 7, and the first packing 7 being mounted in the mounting groove 611. The mounting groove 611 has a positioning effect on the mounting post 61, so that a worker can conveniently mount the first gasket 7 inside the mounting post 61. The one end that the erection column 61 is close to two guide blocks 62 has been seted up and has been kept away the position groove 612, keeps away position groove 612 and the intercommunication each other of mounting groove 611, and the staff is convenient for pass keep away position groove 612 with the finger, then pushes away first sealed pad 7 from mounting groove 611 in, has increased the convenience that the staff dismantled first sealed pad 7.

With continued reference to fig. 2 and 3, the end of the valve cover 5, which is close to the sliding frame 6, is provided with a first annular groove 54, and when the first sealing gasket 7 seals the exhaust passage 51, the end of the mounting post 61, which is close to the valve cover 5, is just inserted into the first annular groove 54, so that both the mounting post 61 and the valve cover 5 are protected. The valve cover 5 is sleeved with a second spring 53, one end of the second spring 53, which is close to the valve cover 5, is abutted against the first annular groove 54, and one end of the second spring 53, which is far away from the valve cover 5, is abutted against the first sealing gasket 7. When the first packing 7 blocks the exhaust passage 51, the first packing 7 and the valve cover 5 press the second spring 53 while allowing the second spring 53 to store elastic potential energy. In the present embodiment, an end of the second spring 53 near the first seal 7 is located inside the mounting groove 611. The mounting groove 611 has a limiting effect on the end of the second spring 53, so that the end of the second spring 53 cannot deviate in a direction away from the axis during the compression process of the second spring 53, thereby prolonging the service life of the second spring 53.

Referring to fig. 2 and 4, the valve seat further includes a mounting member 2, the mounting member 2 includes a connecting pipe 21 and a round iron pipe 22, one end of the connecting pipe 21, which is close to the valve body 1, is abutted to the valve body 1, and one end of the connecting pipe 21, which is far away from the valve body 1, is fixedly connected with the round iron pipe 22. Specifically, the connecting pipe and the round iron pipe can be connected together in a clamping fit mode or in an integrated forming mode.

With continued reference to fig. 2 and 4, the end of the driver that is closer to the valve body 1 is located within the connecting tube 21 and the end that is farther from the valve body 1 is located within the round iron tube 22. Specifically, the driving piece includes decides iron core 8, and round iron pipe 22 internal fixation is provided with wire winding skeleton 3, decides iron core 8 and is fixed in wire winding skeleton 3 inside, moves iron core 9 and slides and set up in wire winding skeleton 3 inside, and wire winding skeleton 3's outside cover is equipped with enamelled coil 31. The outer side wall of the enamelled coil 31 is sleeved with an insulating tape 34. The insulating tape 34 is positioned between the enameled coil 31 and the round iron pipe 22, and the insulating tape 34 has an insulating effect on the enameled coil 31 and the round iron pipe 22, so that short circuit between the enameled coil 31 and the round iron pipe 22 can be prevented, and the service lives of the enameled coil 31 and the round iron pipe 22 are prolonged.

Referring to fig. 2, a second annular groove 107 is formed at one end of the valve body 1, which is close to the mounting member 2, and a second sealing ring 108 is arranged in the second annular groove 107, and the second sealing ring 108 is positioned between the valve body 1 and the connecting pipe 21, so that the tightness between the valve body 1 and the connecting pipe 21 is improved.

Referring to fig. 2 and 4, the driving member further includes a movable iron core 9 and a first spring 10, in this embodiment, the first spring 10 is a tower-shaped spring, the first spring 10 is sleeved at one end of the movable iron core 9 close to the valve cover 5, the diameter of one end of the tower-shaped spring close to the movable iron core 9 is larger, the first spring 10 is used for driving the movable iron core 9 to reset, and the top of the movable iron core 9 abuts against the guide block 62. When the electromagnetic valve is powered off, the elastic force of the first spring 10 drives the movable iron core 9 to slide towards the direction close to the valve cover 5, the movable iron core 9 drives the guide block 62 to slide towards the direction close to the valve cover 5, and the guide block 62 drives the mounting column 61 and the first sealing gasket 7 to slide towards the direction close to the valve cover 5, so that the first sealing gasket 7 seals the exhaust channel 51, and the valve body 1 is closed. When the electromagnetic valve is electrified, the coil magnetic field magnetizes the fixed iron core 8 and the movable iron core 9 simultaneously to generate magnetic force, the magnetic force drives the movable iron core 9 to slide towards the direction close to the fixed iron core 8, the movable iron core 9 presses the first spring 10, so that the first spring 10 is in a compressed state, meanwhile, the movable iron core 9 slides towards the direction far away from the sliding frame 6, the thrust action of the movable iron core 9 on the sliding frame 6 is relieved, so that the sliding frame 6 slides towards the direction far away from the valve cover 5, the sliding frame 6 drives the first sealing gasket 7 to slide towards the direction far away from the exhaust channel 51, the blocking action of the first sealing gasket 7 on the exhaust channel 51 is relieved, the air inlet 101 and the air outlet 102 are kept communicated with each other, and the electromagnetic valve is started.

Referring to fig. 2 and 4, in the present embodiment, an end of the bobbin 3 near the connection pipe 21 abuts against an end of the connection pipe 21, and the connection pipe 21 has a limit function on the bobbin 3, thereby having a fixing function on the bobbin 3. The end of the winding framework 3, which is close to the connecting pipe 21, is provided with a third annular groove 35, a third sealing ring 36 is arranged in the third annular groove 35, and the third sealing ring 36 increases the tightness between the connecting pipe 21 and the winding framework 3.

With continued reference to fig. 2 and 4, the inner side wall of the connecting tube 21 near one end of the circular iron tube 22 is integrally formed with a guide ring 23, and the guide ring 23 is circular. The movable iron core 9 passes through the guide ring 23, the movable iron core 9 is in sliding fit with the guide ring 23, and the guide ring 23 has a guide effect on the movable iron core 9, so that the sliding stability of the movable iron core 9 is improved.

With continued reference to fig. 2 and 4, the movable iron core 9 is integrally formed with a drop-off preventing block 91 at one end near the valve cover 5, and the diameter of the drop-off preventing block 91 is larger than that of the movable iron core 9. One end of the first spring 10 abuts against the drop-off preventing block 91. The movable iron core 9 drives the anti-falling block 91 to slide towards the direction close to the fixed iron core 8 in the process of sliding towards the direction close to the fixed iron core 8, and the anti-falling block 91 presses the first spring 10 in the process of moving so that the spring is in a compressed state, and therefore elastic potential energy is stored. The connecting pipe 21 is provided with a first limit groove 211 near one end of the valve cover 5, and in this embodiment, the first limit groove 211 is an annular groove, and the other end of the first spring 10 abuts against the groove bottom of the first limit groove 211. The first limiting groove 211 has a positioning effect on one end of the first spring 10, so that the end of the first spring 10 cannot deviate towards a direction away from the axis in the compression process of the first spring 10, and the service life of the first spring 10 is prolonged.

With continued reference to fig. 2 and 4, the valve seat further includes a housing 4, and the housing 4 is sleeved at one end of the valve body 1. Specifically, four clamping blocks 109 are integrally formed on the valve body 1, and the four clamping blocks 109 are symmetrically distributed on two opposite sides of the valve body 1. Each of the clips 109 has a triangular cross section. In contrast, the housing 4 is provided with four clamping grooves 41, the four clamping grooves 41 are symmetrically distributed on two opposite sides of the housing 4, and the clamping blocks 109 are in one-to-one correspondence with the clamping grooves 41. The four clamping blocks 109 are respectively located in the four clamping grooves 41, so that the shell 4 is sleeved at one end of the valve body 1, and convenience in mounting and dismounting the valve seat by workers is improved. The shell 4 is also fixedly provided with a needle seat 42, the needle seat 42 is fixedly connected with the fixed iron core 8, and the needle seat 42 is used for externally connecting a power line.

The implementation principle of the embodiment 1 is as follows: in the non-energized state, the elastic force of the first spring 10 bounces the movable iron core 9, so that the movable iron core 9 is driven to slide towards the direction close to the valve cover 5, the movable iron core 9 drives the guide block 62 to slide towards the direction close to the valve cover 5, the guide block 62 drives the mounting column 61 and the first sealing gasket 7 to slide towards the direction close to the valve cover 5, so that the first sealing gasket 7 seals the exhaust channel 51, the air flow of the air inlet 101 cannot flow the air outlet 102, and the valve body 1 is closed, and meanwhile, the first sealing gasket 7 and the valve cover 5 press the second spring 53, so that the second spring 53 is in a compressed state;

when the electromagnetic valve is electrified, current generates a magnetic field through the enamelled coil 31, the coil magnetic field magnetizes the fixed iron core 8 and the movable iron core 9 to generate magnetic force, the fixed iron core 8 attracts the movable iron core 9, so that the movable iron core 9 is driven to slide towards the direction close to the fixed iron core 8, the movable iron core 9 presses the first spring 10, the first spring 10 is in a compressed state, meanwhile, the thrust action of the movable iron core 9 on the sliding frame 6 is relieved, meanwhile, the second spring 53 in the compressed state has elastic action on the first sealing gasket 7, so that the first sealing gasket 7 and the sliding frame 6 are pushed to slide towards the direction away from the exhaust channel 51, the sliding frame 6 drives the first sealing gasket 7 to slide towards the direction away from the exhaust channel 51, the blocking action of the first sealing gasket 7 on the exhaust channel 51 is relieved, the air inlet 101 and the air outlet 102 are kept communicated with each other, and the electromagnetic valve is started; so that the highest working frequency of the electromagnetic air valve is 200HZ, the highest air pressure is 1Mpa, the rated power is 1W, the service life can reach one hundred million times, and the electromagnetic air valve has the advantages of high pressure, high frequency, low power consumption and long service life; meanwhile, the structure of the valve seat comprises a sliding sealing part and a driving part for providing power, so that accumulated assembly tolerance caused by direct sealing of the movable iron core 9 is avoided, and the consistency of the flow of the electromagnetic valve is ensured.

Example 2

Example 2 differs from example 1 in that:

referring to fig. 5 and 6, a sliding hole 110 is further formed in one side of the valve body 1 facing away from the air inlet 101, and the sliding hole 110 is communicated with the valve cavity 103. The sliding hole 110 is internally provided with a manual switching device 11, and specifically, the manual switching device 11 includes a slider 111, a third spring 112, and a shutter 113, and in this embodiment, the sliding hole 110 is a circular hole, and the slider 111 is cylindrical in shape. The sliding member 111 is located inside the sliding hole 110, and the sliding member 111 is slidably engaged with the sliding hole 110. The third spring 112 is located in the valve cavity 103, and a second limiting groove 115 is formed in one end, close to the spring, of the sliding piece 111. One end of the third spring 112 is abutted against the inner side wall of the valve cavity 103, and the other end of the third spring 112 is abutted against the bottom of the second limit groove 115. The shutter 113 is fixed to the outer side wall of the valve body 1, and one end of the slider 111 away from the spring abuts against the inner side wall of the shutter 113. The end of the manual switch, which is close to the third spring 112, is provided with an inclined surface 118, and the inclined surface 118 is used for driving the movable iron core 9 to slide.

Referring to fig. 6, a fourth annular groove 116 is formed in the outer side wall of the sliding member 111, and a fourth sealing ring 114 is sleeved in the fourth annular groove 116. The fourth seal 114 increases the sealability between the sliding member 111 and the sliding hole 110.

The implementation principle of the embodiment 2 is as follows: under the power failure state, the sliding part 111 is manually pressed inwards, the inclined surface 118 of the sliding part 111 props against the top of the movable iron core 9, the movable iron core 9 is pressed downwards, so that the electromagnetic valve is electrified, current generates a magnetic field through the enamelled coil 31, the magnetic field of the coil simultaneously magnetizes the fixed iron core 8 and the movable iron core 9 to generate magnetic force, the movable iron core 9 is sucked downwards to the fixed iron core 8, so that the movable iron core 9 moves towards the direction close to the fixed iron core 8, the movable iron core 9 presses the first spring 10, so that the first spring 10 is in a compressed state, meanwhile, the thrust action of the movable iron core 9 on the sliding frame 6 is released, meanwhile, the second spring 53 in the compressed state has an elastic action on the first sealing gasket 7, so that the first sealing gasket 7 and the sliding frame 6 are pushed to slide towards the direction away from the exhaust channel 51, the sliding frame 6 drives the first sealing gasket 7 to slide towards the direction away from the exhaust channel 51, so that the blocking action of the first sealing gasket 7 on the exhaust channel 51 is released, so that the air inlet 101 and the air outlet 102 are kept mutually communicated, and the electromagnetic valve is started;

after the sliding part 111 is released, the third spring 112 rebounds to reset the sliding part 111, the movable iron core 9 loses the pressure of the sliding part 111, and the first spring 10 rebounds to drive the movable iron core 9 to reset, so that the function of resetting the movable iron core 9 to close the electromagnetic valve after the electromagnetic valve is powered off is realized.

In the case of example 3,

example 3 differs from example 1 in that:

referring to fig. 7, an exhaust port 117 is further formed on one side of the valve body 1, which is close to the air inlet 101, and the exhaust port 117 is located between the air inlet 101 and the air outlet 102, and the exhaust port 117 is communicated with the valve cavity 103.

The implementation principle of the embodiment 3 is as follows: when the valve cover 5 is not electrified, the movable iron core 9 is sprung by the first spring 10, the movable frame is simultaneously lifted, the upper end face of the first sealing gasket 7 in the valve cover is propped against the air port of the valve cover 5, and the air inlet 101 is sealed, and the valve cover is closed at the moment. In the closed state, the exhaust port 117 communicates with the air outlet 102;

when the electromagnetic air valve is electrified, current generates a magnetic field through the enamelled coil 31 to attract the movable iron core 9 to the fixed iron core 8, at the moment, the movable frame is not pushed away by the thrust of the movable iron core 9 and is pushed away by the second spring 53, the upper end surface of the first sealing gasket 7 is separated from the air port of the valve cover 5 to be in an open state, the lower end surface of the first sealing gasket 7 can prop against the air outlet 102, at the moment, the air inlet 101 is communicated with the air outlet 117, and the air outlet 102 can be sealed. The air flow enters along with the air inlet 101 and flows out from the air outlet 117, and is in an open state at this time;

after the power-off is closed, the gas inlet 101 is stopped from flowing by the sealing gas, the gas outlet 117 is communicated with the gas outlet 102, and the gas flowing into the gas outlet 117 from the gas inlet 101 is discharged from the gas outlet 102.

In the case of example 4,

example 4 differs from example 2 in that:

referring to fig. 8, an exhaust port 117 is further formed on one side of the valve body 1 near the air inlet 101, the exhaust port 117 is located between the air inlet 101 and the air outlet 102, and the exhaust port 117 is communicated with the valve cavity 103.

The implementation principle of the embodiment 4 is as follows: in the non-energized state, the first spring 10 ejects the movable iron core 9, the sliding frame 6 is simultaneously lifted, the upper end face of the first sealing pad 7 in the interior is propped against the air port of the valve cover 5, and the air inlet 101 is sealed, and at the moment, the sliding frame is in a closed state. In the closed state, the exhaust port 117 communicates with the air outlet 102.

When the electromagnetic air valve is electrified, current generates a magnetic field through the enamelled coil 31 to attract the movable iron core 9 to the fixed iron core 8, at the moment, the sliding frame 6 is not pushed away by the pushing force of the movable iron core 9, the upper end face of the first sealing pad 7 is separated from the air port of the valve cover 5 to be in an open state, the lower end face of the first sealing pad 7 can prop against the air outlet 102, at the moment, the air inlet 101 is communicated with the air outlet 117, and the air outlet 102 can be sealed. The air flow enters with the air inlet 101 and flows out from the air outlet 117, and is in an open state. After the power-off is closed, the gas inlet 101 is stopped from flowing by the sealing gas, the gas outlet 117 is communicated with the gas outlet 102, and the gas flowing into the gas outlet 117 from the gas inlet 101 is discharged from the gas outlet 102.

Under the power failure state, the sliding part 111 is manually pressed inwards, the inclined surface 118 of the sliding part 111 props against the top of the movable iron core 9, the movable iron core 9 is pressed downwards, so that the electromagnetic valve is electrified, current generates a magnetic field through the enamelled coil 31, the magnetic field of the coil simultaneously magnetizes the fixed iron core 8 and the movable iron core 9 to generate magnetic force, the movable iron core 9 is sucked downwards to the fixed iron core 8, so that the movable iron core 9 moves towards the direction close to the fixed iron core 8, the movable iron core 9 presses the first spring 10, so that the first spring 10 is in a compressed state, meanwhile, the thrust action of the movable iron core 9 on the sliding frame 6 is released, meanwhile, the second spring 53 in the compressed state has an elastic action on the first sealing gasket 7, so that the first sealing gasket 7 and the sliding frame 6 are pushed to slide towards the direction away from the exhaust channel 51, the sliding frame 6 drives the first sealing gasket 7 to slide towards the direction away from the exhaust channel 51, so that the blocking action of the first sealing gasket 7 on the exhaust channel 51 is released, so that the air inlet 101 and the air outlet 102 are kept mutually communicated, and the electromagnetic valve is started;

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. An electromagnetic valve, characterized in that: comprises a valve seat, a sliding plugging piece and a driving piece; an air inlet (101), an air outlet (102) and a valve cavity (103) are formed in the valve seat; the sliding plugging piece comprises a valve cover (5), a sliding frame (6) and a first sealing gasket (7), wherein the valve cover (5) is fixed in the valve cavity (103), an exhaust channel (51) is formed in the valve cover (5), the air inlet (101) is communicated with the exhaust channel (51), and the air outlet (102) is communicated with the exhaust channel (51); the sliding frame (6) is slidably arranged in the valve cavity (103), and the driving piece is used for driving the sliding frame (6) to slide towards a direction approaching or separating from the valve cover (5); the first sealing gasket (7) is fixed in the sliding frame (6), and the first sealing gasket (7) is used for sealing the exhaust channel (51).

2. A solenoid valve according to claim 1, wherein: the sliding frame (6) comprises a mounting column (61) and a guide block (62), and the mounting column (61) is fixedly connected with the guide block (62); the mounting column (61) is provided with a mounting groove (611), and the first sealing gasket (7) is mounted in the mounting groove (611); the valve seat is provided with a guide hole (106), the guide block (62) penetrates through the guide hole (106), and the guide block (62) is in sliding fit with the guide hole (106).

3. A solenoid valve according to claim 2, wherein: the driving piece comprises a fixed iron core (8), a movable iron core (9) and a first spring (10); the valve seat is internally and fixedly provided with a winding framework (3), the fixed iron core (8) is fixed inside the winding framework (3), the movable iron core (9) is slidably arranged inside the winding framework (3), and an enamelled coil (31) is sleeved outside the winding framework (3); the first spring (10) is sleeved on the movable iron core (9), the first spring (10) is used for driving the movable iron core (9) to reset, and the top of the movable iron core (9) is abutted to the guide block (62); a second spring (53) is arranged between the valve cover (5) and the first sealing gasket (7), one end of the second spring (53) is abutted to the valve cover (5), and the other end of the second spring is abutted to the first sealing gasket (7).

4. A solenoid valve according to claim 3 wherein: the outer side wall of the movable iron core (9) is fixedly provided with a convex ring (92).

5. An electromagnetic valve according to claim 4, wherein: an anti-falling block (91) is fixedly arranged at the end part of the movable iron core (9), and one end of the first spring (10) is abutted to the anti-falling block (91).

6. An electromagnetic valve according to claim 4, wherein: the valve seat further comprises a mounting piece (2), the winding framework (3) is located in the mounting piece (2), a first limit groove (211) is formed in the end portion of the mounting piece (2), and the other end of the first spring (10) is abutted to the groove bottom of the first limit groove (211).

7. A solenoid valve according to claim 2, wherein: the valve cover (5) is sleeved with a first sealing ring (52), and the first sealing ring (52) is located between the valve cover (5) and the valve seat.

8. A solenoid valve according to claim 3 wherein: a first annular groove (54) is formed in the valve cover (5), and the end portion of the second spring (53) is located in the first annular groove (54).

9. A solenoid valve according to claim 3 wherein: the valve seat is provided with a sliding hole (110), and the sliding hole (110) is communicated with the valve cavity (103); a manual switching device (11) is arranged in the sliding hole (110), the manual switching device (11) comprises a sliding piece (111), a third spring (112) and a baffle plate (113), and the sliding piece (111) is in sliding fit with the sliding hole (110); one end of the third spring (112) is abutted against the inner side wall of the valve cavity (103), the other end of the third spring (112) is abutted against the end part of the manual switch, the baffle plate (113) is fixed on the valve seat, and the end part of the sliding piece (111) is abutted against the baffle plate (113); one end of the manual switch, which is close to the third spring (112), is provided with an inclined surface (118), and the inclined surface (118) is used for driving the movable iron core (9) to slide.

10. A solenoid valve according to claim 9 wherein: a second limiting groove (115) is formed in the sliding piece (111), and one end of the third spring (112) is located in the second limiting groove (115).