CN218625438U - Solenoid valve and solenoid valve subassembly - Google Patents

Abstract

The utility model relates to a fluid control valve discloses a solenoid valve and solenoid valve subassembly. The electromagnetic valve comprises a valve body mechanism, wherein the valve body mechanism comprises a valve seat assembly and a fixed iron core assembly, the valve seat assembly comprises a valve body supporting seat, the fixed iron core assembly comprises a part which is located on a fixed iron core inside the valve body supporting seat, and a pressing piece is arranged at the top end inside the valve body supporting seat, so that the fixed iron core is sealed and pressed and fixed in the valve body supporting seat. The installation is simple and convenient, has good leakproofness, and simple structure can practice thrift manufacturing cost simultaneously. Additionally, the utility model discloses still relate to a solenoid valve subassembly.

Description

Solenoid valve and solenoid valve subassembly

Technical Field

The utility model relates to a fluid control valve specifically, relates to a solenoid valve. Additionally, the utility model discloses still relate to a solenoid valve subassembly.

Background

The electromagnetic valve is an industrial device controlled by electromagnetism, is an automatic basic element for controlling fluid, belongs to an actuator, and is not limited to hydraulic pressure and pneumatic pressure. In industrial control systems, for adjusting the direction, flow, speed and other parameters of a medium. The electromagnetic valve can be matched with different circuits to realize expected control, and the control precision and flexibility can be ensured. There are many types of solenoid valves, and different solenoid valves function at different locations in the control system, such as conventional check valves, safety valves, directional control valves, speed control valves, and the like.

Because the application range of solenoid valve is extensive, consequently to the leakproofness of solenoid valve itself and the requirement of installation very high, the present solenoid valve is equipped with the recess in its inside more, sets up the sealing member in the recess and realizes radial seal, and such a sealing mode has many not enough and the structure is too complicated, and manufacturing cost is higher.

Therefore, a new type of solenoid valve needs to be designed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a solenoid valve is provided, this solenoid valve simple installation has good leakproofness, and simple structure can practice thrift manufacturing cost simultaneously.

In order to solve the technical problem, the utility model provides an aspect provides a solenoid valve, including valve body mechanism, valve body mechanism includes disk seat subassembly and fixed iron core subassembly, the disk seat subassembly includes the valve body supporting seat, fixed iron core subassembly is located including the part the inside fixed iron core of valve body supporting seat the inside top of valve body supporting seat is provided with compresses tightly the piece, with inciting somebody to action fixed iron core seals to compress tightly to be fixed in the valve body supporting seat.

Preferably, a first step structure is formed on the inner wall of the valve body supporting seat, a second step structure is formed on the outer wall of the fixed iron core, and the first step structure and the second step structure are arranged to form a sealing cavity for accommodating a first sealing element.

Specifically, the top of first stair structure inside wall is formed with first installation department, the lateral wall that compresses tightly the piece is formed with the second installation department, first installation department with second installation department screw thread limit connection.

Preferably, the fixed iron core is installed in the inner cavity of the valve body support seat, so that the inner wall surface of the fixed iron core and the inner wall surface of the valve body support seat together form a valve cavity.

Specifically, a piston assembly is disposed within the valve cavity.

More specifically, the valve body supporting seat further comprises a valve port, at least one first channel and a second channel, the first channel is located on the side wall of the valve body supporting seat and communicated with the valve cavity, the second channel is located at the bottom end of the valve body supporting seat, one end, close to the valve cavity, of the second channel is formed into the valve port, and the piston assembly is in contact with the valve port and can control the first channel and the second channel to be switched on and off through movement.

Preferably, the piston assembly comprises a piston, a piston ring, a piston spring, a gasket and a sealing block, the piston ring is installed in an installation groove in the outer surface of the upper end of the piston, the piston spring is sleeved on the outer surface of the lower end of the piston, the piston spring is abutted to the bottom surface of the valve cavity, an annular groove is formed in the bottom surface of the piston, and the sealing block and the gasket are sequentially installed in the annular groove.

Preferably, fixed iron core subassembly still includes the magnetism isolating pipe, the upper end of fixed iron core is equipped with connecting portion, connecting portion pass compress tightly the piece, the magnetism isolating pipe cover is established on the connecting portion, and with vacuole formation between the connecting portion upper surface, the cavity with through-hole in the connecting portion is linked together and is formed into the installation cavity of installation activity iron core subassembly, activity iron core subassembly is located the piston assembly top still the cover is equipped with coil mechanism outside the magnetism isolating pipe.

Preferably, activity core subassembly includes activity iron core, connecting rod, diaphragm and activity iron core spring, activity iron core, connecting rod and diaphragm top-down link to each other in proper order, activity iron core spring housing is established on the connecting rod, just activity iron core spring with boss looks butt in the connecting portion.

Preferably, be provided with a plurality of first screw holes on the up end of valve body supporting seat, just valve body supporting seat upper end is provided with the valve gap, be provided with on the valve gap with the second screw hole that the valve body supporting seat corresponds, first screw hole with the second screw hole passes through the bolt and links to each other, in order to incite somebody to action the valve gap fastening is installed on the valve body supporting seat.

Preferably, the pressing member is a pressing nut.

The utility model discloses another aspect still discloses an electromagnetic valve assembly, including any one of the above-mentioned technical scheme the solenoid valve.

Through the technical scheme, the beneficial effects of the utility model are as follows:

the utility model discloses an aspect provides a solenoid valve, this solenoid valve includes valve body mechanism, and valve body mechanism has including disk seat subassembly and fixed iron core subassembly, and the disk seat subassembly is including the valve body supporting seat, and fixed iron core subassembly then includes that the part is located the inside fixed iron core of valve body supporting seat, is provided with on the inside top of valve body supporting seat and compresses tightly the piece, compresses tightly the piece and can seal fixed iron core and compress tightly and fixed the installation in the valve body supporting seat, the utility model discloses well adoption compresses tightly and seals fixedly between fixed iron core and the valve body supporting seat, has solved because the rotating resistance is big, the problem of installation difficulty to the disk seat structure has been simplified, has saved manufacturing cost.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is one of the overall schematic structural views of an embodiment of the solenoid valve of the present invention;

FIG. 2 is a schematic view 2 of the overall structure of an embodiment of the solenoid valve of the present invention;

FIG. 3 is a cross-sectional view of the overall structure of an embodiment of the solenoid valve of the present invention;

fig. 4 is a partial enlarged view at a of fig. 3;

fig. 5 is a schematic view of the assembly of the valve body support seat and the valve cover in the solenoid valve of the present invention;

FIG. 6 is a top view of FIG. 5;

fig. 7 is a schematic structural view of a specific embodiment of a valve body support seat of the electromagnetic valve of the utility model;

FIG. 8 is a cross-sectional view of FIG. 7;

fig. 9 is a schematic structural diagram of an embodiment of a fixed iron core of the solenoid valve according to the present invention;

FIG. 10 is a cross-sectional view of FIG. 9;

fig. 11 is a schematic structural view of an embodiment of a pressing member of the solenoid valve according to the present invention;

FIG. 12 is a cross-sectional view of FIG. 11;

fig. 13 is a sectional view of the electromagnetic valve of the present invention.

Description of the reference numerals

1 valve seat assembly 11 valve body supporting seat

111 first mounting portion 112 first step structure

12 first seal 13 seal chamber

14-valve chamber 15 valve port

16 first channel 17 second channel

18 second seal 19 third seal

2 piston assembly 21 piston

22 piston ring 23 piston spring

24 gasket 25 seal block

3 Movable iron core assembly 31 movable iron core

32 connecting rod 33 diaphragm

331 convex platform 34 movable iron core spring

4 fixed iron core assembly 41 fixed iron core

411 second step structure 412 connecting part

413 cavity 42 magnetism isolating pipe

5 second mounting part of pressing piece 51

6 valve gap of coil mechanism 7

71 first screw hole 72 second screw hole

73 bolt 81 first flow passage

82 second runner 9 mounting bracket

F1 valve body supporting seat upper surface F2 valve body supporting seat inner diameter side wall

F3 fixed iron core lower surface F4 fixed iron core outer diameter side wall

C1 first half groove C2 second half groove

P1 first flow through hole P2 circulation cavity

P3 second flow through hole

Detailed Description

The following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings, and it should be understood that the embodiments described herein are merely for purposes of illustration and explanation, and the scope of the present invention is not limited to the following embodiments.

In the description of the present invention, it should be noted that, unless explicitly specified or limited otherwise, the terms "set", "provided", "installed", "corresponding", "connected" and "arranged" should be interpreted broadly, for example, the connection may be a direct connection, an indirect connection through an intermediate medium, a fixed connection, a detachable connection, or an integral connection; either directly or indirectly through intervening connectors, either internally or in cooperative relationship to each other. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, and therefore the features defined "first", "second", "third" may explicitly or implicitly include one or more of the features described.

In the present invention, in the case where no opposite explanation is made, the terms of orientation such as "inside and outside" are defined with respect to the inside and outside of the corresponding parts, and "up and down" are defined with respect to the direction in which the solenoid valve is used as a reference, and particularly in the drawings provided in the present invention, the orientation or positional relationship in use is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description of the present invention and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present invention; for the orientation terms of the present invention, it should be understood in conjunction with the actual installation state.

Referring to fig. 1 to 3, the utility model provides a solenoid valve, this solenoid valve includes valve body mechanism, valve body mechanism includes valve seat subassembly 1 and fixed iron core subassembly 4, and, valve seat subassembly 1 includes valve body supporting seat 11, fixed iron core subassembly 4 includes fixed iron core 41, wherein, fixed iron core 41 part is located inside valve body supporting seat 11, top in the inside of valve body supporting seat 11 still is provided with compresses tightly 5, compress tightly 5 and can fix fixed iron core 41 inside valve body supporting seat 11, and as shown in fig. 3, fixed iron core 41 passes and compresses tightly 5, compress tightly 5 and can seal the gap between fixed iron core 41 and the valve body supporting seat 11, the structure of solenoid valve has not only been simplified, the production cost is reduced, the installation has still been simple and convenient, the installation effectiveness is improved, and leakproofness and uniformity have still been improved.

Further, as shown in fig. 4, as an embodiment of the present invention, a first step structure 112 is formed on the inner wall of the valve body supporting seat 11, a second step structure 411 is formed on the outer wall of the fixed iron core 41, and the first step structure 112 and the second step structure 411 are arranged to form a sealed cavity 13 capable of accommodating the first sealing member 12.

It can be understood that, in the locking process of the pressing member 5 and the valve body supporting seat 11, the relative rotation and friction between the first sealing member 12 and the valve body supporting seat 11 and between the first sealing member 12 and the fixed iron core 41 cannot occur, so that the problem that the first sealing member 12 is damaged due to rotation or poor in sealing due to local deformation is avoided, and the product quality of the solenoid valve is improved.

Further, referring to fig. 4, as an embodiment of the present invention, a first mounting portion 111 is formed at the top of the sidewall of the first step structure 112, and a second mounting portion 51 is formed at the outer sidewall of the pressing member 5, the first mounting portion 111 and the second mounting portion 51 can be screw-coupled,

it can be understood that, referring to fig. 4, the first step structure 112 is formed on the valve body support seat upper surface F1 and the valve body support seat inner diameter side wall F2 inside the valve body support seat 11, so that the upper surface of the first step structure 112 and the inner diameter side wall bottom thereof are formed with the first half groove C1 accommodating the first sealing member 12, and the second step structure 411 is formed on the fixed iron core lower surface F3 and the fixed iron core outer diameter side wall F4 of the fixed iron core 41, so that the lower surface of the second step structure 411 and the upper portion of the side wall thereof are formed with the second half groove C2 accommodating the first sealing member 12, as can be seen from fig. 4, the first half groove C1 and the second half groove C2 can constitute a rectangular sealing cavity 13, and further, an external thread is provided on the outer side wall of the pressing member 5, and an internal thread is provided on the inner side wall at the top of the valve body support seat 11, and the external thread and the internal thread can realize a thread limit connection. Specifically, when the electromagnetic valve is installed, the first sealing element 12 is firstly sleeved on the fixed iron core 41 and is adjusted to the position of the second step structure 411, then the fixed iron core assembly 4 including the fixed iron core 41 is placed in the valve body supporting seat 11, so that the first sealing element 12 can be in contact with the first step structure 112 on the valve body supporting seat 11, then the pressing element 5 is in threaded limit connection with the valve body supporting seat 11, the fixed iron core 41 is pressed in the valve body supporting seat 11, therefore, in the process of connecting and locking the pressing element 5 and the valve body supporting seat 11, the first sealing element 12, the valve body supporting seat 11 and the fixed iron core 41 cannot rotate relatively, so that almost no friction exists, the first sealing element 12 cannot generate abrasion or generate partial incomplete shape due to rotation to cause the problem of sealing, and the product quality of the electromagnetic valve provided by the utility model is improved; on the other hand, the existence of sealed chamber 13 for each face of sealing member can both with the face contact of some spare parts in the solenoid valve, has increased sealed area of contact, so, not only can realize sealing, can also realize end face seal through compressing tightly piece 5 simultaneously, can understand that, here "radial seal" refer to follow the utility model provides a diameter direction of solenoid valve seals, end face seal "refers to follows the utility model provides a solenoid valve's axial is sealed.

It can be understood that, as shown in fig. 4, the first sealing element 12 is in an operating state, and is deformed due to the pressure applied from the pressing member 5, specifically, when the pressing member 5 is installed, the pressing member 5 applies pressure to the fixed iron core 41, the sealing cavity 13 becomes small, and the first sealing element 12 is deformed due to the pressure to fill the whole sealing cavity 13, thereby completing the sealing.

In addition, the design of the first stepped structure 112 and the second stepped structure 411 optimizes the structural forms of the valve body supporting seat 11 and the fixed iron core 41, and simplifies the processing steps of the valve body supporting seat 11 and the fixed iron core 41, for example, referring to fig. 7 to 10, when the fixed iron core 41 is processed, only the second stepped structure 411 needs to be arranged on the outer diameter side wall of the fixed iron core 41, other special processing is not needed, when the valve body supporting seat 11 is processed, only the first stepped structure 112 needs to be processed, processing such as grooves is not needed, the processing steps are saved, the processing efficiency is improved, and the installation is simplified.

It should be noted that, as a specific example of the pressing member 5 in the solenoid valve provided by the present invention, referring to fig. 11 to 12, the pressing member 5 may be made of an aluminum alloy material, the aluminum alloy is an alloy based on aluminum and added with a certain amount of other alloying elements, and is one of light metal materials, and the aluminum alloy has higher strength and rigidity; the aluminum alloy has good casting performance and plastic processing performance, good corrosion resistance and weldability, strong corrosion resistance, convenient processing and capability of reducing the processing difficulty, thereby reducing the production cost.

As a specific embodiment of the utility model, see fig. 3, the utility model provides a solenoid valve is still including valve pocket 14, specifically, and fixed iron core 41 is installed in the cavity of valve body supporting seat 11, makes the internal face of fixed iron core and the internal face of valve body supporting seat form valve pocket 14 jointly.

Further, a piston assembly 2 is also provided inside the valve chamber 14.

Furthermore, as a specific embodiment of the present invention, the utility model provides a valve body supporting seat 11 is inside still to include valve port 15, first passageway 16 and second passageway 17, and first passageway 16 is located valve body supporting seat 11's lateral wall to can communicate with each other with valve pocket 14, and second passageway 17 is located valve body supporting seat 11's bottom, and second passageway 17 is close to the one end of valve pocket 14 and is formed with valve port 15, and piston assembly 2 among the above-mentioned specific embodiment just can control the break-make of valve port 15 through the motion, thereby controls the break-make between first passageway 16 and the second passageway 17 with this.

It should be noted that the number of the first passages 16 in the above embodiment is at least one, and two, three or more passages may be provided according to actual needs. As long as it can be ensured that the first passage 16 can communicate with the second passage 17 through the valve port 15.

As a specific embodiment of the piston assembly 2 that uses in the solenoid valve that provides, piston assembly 2 includes piston 21, piston ring 22, piston spring 23, gasket 24 and seal block 25, it is used for installing piston ring 22 to be provided with the mounting groove on the surface of piston 21 upper end, piston spring 23 cover is established on the surface of the lower extreme of piston 21, and the terminal surface looks butt of piston spring 23 and the bottom of valve pocket 14, the bottom surface of piston 21 is provided with the ring channel, install seal block 25 and gasket 24 in the ring channel in proper order. The piston 21 controls the on/off of the valve port 15 by moving up and down in the valve cavity 14, and when no downward pressure is applied to the piston 21, the piston 21 returns to the original position due to the elastic force of the piston spring 23 and does not block the valve port 15 any more.

Furthermore, as a specific embodiment of the middle fixed core assembly 4 of the present invention, referring to fig. 3, the fixed core assembly 4 further includes a magnetism isolating pipe 42, as shown in fig. 3, the upper end of the fixed core 41 can be inserted with the pressing member 5, and a connecting portion 412 is further provided on the outer surface of the upper end thereof, the magnetism isolating pipe 42 is sleeved on the connecting portion 412 of the fixed core 41, and a portion of the magnetism isolating pipe 42 not in contact with the fixed core 41 forms a cavity 413 inside thereof, the cavity 413 can communicate with a through hole provided in the connecting portion 412 of the fixed core 41, forming an installation cavity in which the movable core assembly 3 can be installed, and the movable core assembly 3 is located above the piston assembly 2.

It should be noted that, the pressing piece 5 preferably selects the pressing nut, the pressing nut is simple to process and convenient to install, the installation efficiency can be improved, and the production cost is saved.

It should be further noted that the present invention provides an electromagnetic valve, and therefore, the coil mechanism 6 is further sleeved outside the magnetism isolating pipe 42.

Next, referring to fig. 3, as a specific example, the movable core assembly 3 mentioned in the above specific embodiment, as a specific example, the movable core assembly 3 includes a movable core 31, a connecting rod 32, a diaphragm 33, and a movable core spring 34, wherein the movable core 31, the connecting rod 32, and the diaphragm 33 are sequentially connected from top to bottom, the movable core spring 34 is sleeved on the connecting rod 32, and the movable core spring 34 is further abutted against a boss 331 provided in the connecting portion 412, and it should be noted that the connecting rod 32 is connected to the movable core 31 by riveting.

Referring to fig. 5 to 6, the utility model discloses a concrete example the utility model discloses a still be provided with a plurality of first screw holes 71 on the up end of valve body supporting seat 11, be provided with valve gap 7 in the upper end of valve body supporting seat 11, be provided with a plurality of second screw holes 72 on valve gap 7, first screw hole 71 and second screw hole 72 can pass through bolt 73 and link to each other to can install the end cover fastening on valve body supporting seat 11, valve gap 7 has sealed the upper end of valve body supporting seat 11 on the one hand, on the other hand can with further compressing tightly of fixed iron core 41 in valve body supporting seat 11.

As a specific implementation manner of the present invention, in some of the above specific embodiments and implementations, the first sealing element 12 may be a sealing ring, specifically, the sealing ring may be a rectangular sealing ring, and the rectangular sealing ring has a rectangular cross section, so that the rectangular sealing ring has a higher sealing pressure, and the rectangular sealing ring can better adapt to the sealing cavity 13, and after compression, the rectangular sealing ring has a higher filling degree in the sealing cavity 13, so as to form a good sealing effect; alternatively, the first seal member 12 may be an O-ring, which is more versatile and can reduce the production cost.

Referring to fig. 13, when using the utility model provides a during the solenoid valve, use mounting bracket 9 to fix the solenoid valve in the place that needs to use, as shown in fig. 13, first passageway 16 and second runner 82 intercommunication on the valve body supporting seat 11, second passageway 17 and first runner 81 intercommunication, when needing first runner 81 and second runner 82 intercommunication, energize the solenoid valve, movable core 31 moves up under the effect of the coil mechanism 6 of circular telegram, and then drives piston 21 upward movement through connecting rod 32, open blocking to valve port 15, and then communicate first runner 81 and second runner 82.

It should be noted that, with reference to fig. 3 and 13, when the electromagnetic valve provided by the present invention is used, in order to improve the sealing performance between the electromagnetic valve and the mounting component, a second sealing member 18 and a third sealing member 19 are respectively disposed on the periphery of the valve body supporting seat 11 of the electromagnetic valve, so as to seal the gap between the valve body supporting seat 11 and the mounting component.

With reference to fig. 3, as a specific embodiment of the present invention, the present invention provides a solenoid valve that is a normally open valve, which is open when not energized, and closed when energized, as shown in fig. 3, because the piston spring 23 is pre-compressed when being installed in the valve cavity 14, when not energized, the piston spring 23 presses the piston 21 against the inner end surface of the fixed iron core 41 by its own resilience, so that the piston 21 drives the sealing block 25 to leave the upper end surface of the valve port 15, the valve port 15 communicates with the first passage 16 and the second passage 17, fluid can flow to the first passage 16 through the valve port 15 via the second passage 17, in order to prevent the fluid pressure entering the second passage 17 from acting on the lower end surface of the piston 21, so that the piston 21 is pressed upward to damage the piston 21, the first through hole P1 is formed in the piston 21, the upper surface groove of the piston 21 and the lower end surface of the fixed iron core 41 enclose a flow chamber P2, and the flow chamber P2 communicates with the second through hole P3, and then communicates with the first through hole P1, so that the second flow of the piston 21 is balanced when the fluid pressure acting on the second passage 17, the second flow chamber 17 is balanced, the fluid flow to prevent the flow to the second flow to the first through hole 17, and the flow to prevent the flow to be balanced. In order to avoid the increased accumulation of the divided fluid in the flow chamber P2, the fluid in the flow chamber P3 flows toward the valve chamber 14 through the second flow through hole P3 and then toward the first flow passage 16. In addition, when the electromagnetic valve is powered on, the electromagnetic valve starts to close, the coil mechanism 6 generates electromagnetic force due to the power on at this time, so that the movable iron core 31 moves downward, then the connecting rod 32 is driven to move downward, the connecting rod 32 brings the diaphragm 33 to contact with the piston 21 downward, at this time, the movable iron core spring 34 is compressed by the pressure from the upper movable iron core 31, the piston 21 moves downward due to the pressure from above, so that the lower surface of the sealing block 25 is attached to the upper end surface of the valve port 15, then the valve port 15 is closed, the first through hole P1 is also blocked by the diaphragm 33 at this time, because of the closing of the valve port 15, the first flow channel 16 is no longer in a communication state with the second flow channel 17, at this time, the piston spring 23 is pushed to be further compressed, if the opening is needed, as long as the coil mechanism is powered off, the movable iron core 31 moves upward due to the resilience of the movable iron core spring 34, so that the connecting rod 32 is driven to move upward, no longer applies pressure to the piston 21, and the piston 21 moves upward by the resilience of the piston spring 23, so that the sealing block 25 leaves the upper end surface of the sealing block 15, and the first flow channel 16 is in a communication state with the second flow channel 17.

A second aspect of the present invention provides a solenoid valve assembly including the solenoid valve provided in the first aspect.

The utility model discloses a to valve body supporting seat 11, compress tightly a 5 and fixed iron core 41 improves, compress tightly the screw thread spacing connection between the first installation department 111 on second installation department 51 on 5 and the valve body supporting seat 11 through setting up respectively, and the sealed chamber 13 that can hold first sealing member 12 that first stair structure 112 on the valve body supporting seat 11 and the second stair structure 411 on the fixed iron core 41 constitute forms seal structure, improve sealing performance, make first sealing member 12 not only can realize that radial seal can also realize end face seal, sealing performance has been improved, the product quality of solenoid valve has been improved, and the installation has been simplified, and the production efficiency is improved.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "a specific implementation," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present disclosure, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is provided for the preferred embodiments of the present invention, but the present invention is not limited to the details of the above embodiments, and the technical idea of the present invention can be implemented by various simple modifications, which all belong to the protection scope of the present invention.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.

In addition, various embodiments of the present invention can be arbitrarily combined with each other, and the disclosed content of the present invention should be considered as the same as long as it does not violate the idea of the present invention.

Claims (13)

1. The utility model provides an electromagnetic valve, its characterized in that, includes valve body mechanism, valve body mechanism includes disk seat subassembly (1) and fixed iron core subassembly (4), disk seat subassembly (1) includes valve body supporting seat (11), fixed iron core subassembly (4) are located including the part fixed iron core (41) inside valve body supporting seat (11) the inside top of valve body supporting seat (11) is provided with compresses tightly piece (5), with will fixed iron core (41) seal tightly to be fixed in valve body supporting seat (11).

2. The electromagnetic valve according to claim 1, characterized in that a first step structure (112) is formed on the inner wall of the valve body supporting seat (11), a second step structure (411) is formed on the outer wall of the fixed iron core (41), and the first step structure (112) and the second step structure (411) are arranged to form a sealing cavity (13) for accommodating a first sealing member (12).

3. The electromagnetic valve according to claim 2, characterized in that a first mounting part (111) is formed at the top of the inner side wall of the first step structure (112), a second mounting part (51) is formed at the outer side wall of the pressing piece (5), and the first mounting part (111) is in threaded limit connection with the second mounting part (51).

4. The electromagnetic valve according to claim 1, characterized in that the fixed iron core (41) is mounted into the inner cavity of the valve body support seat (11) such that the inner wall surface of the fixed iron core (41) and the inner wall surface of the valve body support seat (11) together form a valve cavity (14).

5. The solenoid valve according to claim 4, characterized in that a piston assembly (2) is arranged inside the valve chamber (14).

6. The solenoid valve according to claim 5, characterized in that the valve body supporting seat (11) further comprises a valve port (15), at least one first channel (16) and a second channel (17), the first channel (16) is located on the side wall of the valve body supporting seat (11) and is communicated with the valve cavity (14), the second channel (17) is located at the bottom end of the valve body supporting seat (11), one end of the second channel (17) close to the valve cavity (14) is formed into the valve port (15), and the piston assembly (2) is in contact with the valve port (15) to be capable of controlling the first channel (16) and the second channel (17) to be opened and closed through movement.

7. The electromagnetic valve according to claim 4, characterized in that the piston assembly (2) comprises a piston (21), a piston ring (22), a piston spring (23), a gasket (24) and a sealing block (25), wherein the piston ring (22) is installed in an installation groove on the outer surface of the upper end of the piston (21), the piston spring (23) is sleeved on the outer surface of the lower end of the piston (21), the piston spring (23) is abutted against the bottom surface of the valve cavity (14), the bottom surface of the piston (21) is provided with an annular groove, and the sealing block (25) and the gasket (24) are sequentially installed in the annular groove.

8. The electromagnetic valve according to claim 5, wherein the fixed core assembly (4) further comprises a magnetism isolating pipe (42), a connecting part (412) is arranged at the upper end of the fixed core (41), the connecting part (412) penetrates through the pressing part (5), the magnetism isolating pipe (42) is sleeved on the connecting part (412), a cavity (413) is formed between the upper surfaces of the connecting part (412), the cavity (413) is communicated with a through hole in the connecting part (412) to form an installation cavity for installing the movable core assembly (3), the movable core assembly (3) is located above the piston assembly (2), and a coil mechanism (6) is sleeved outside the magnetism isolating pipe (42).

9. The electromagnetic valve according to claim 8, wherein the movable iron core assembly (3) comprises a movable iron core (31), a connecting rod (32), a diaphragm (33) and a movable iron core spring (34), the movable iron core (31), the connecting rod (32) and the diaphragm (33) are sequentially connected from top to bottom, the movable iron core spring (34) is sleeved on the connecting rod (32), and the movable iron core spring (34) is abutted to a boss (331) in the connecting portion (412).

10. The electromagnetic valve according to any one of claims 1 to 9, characterized in that a plurality of first threaded holes (71) are provided on the upper end surface of the valve body support seat (11), a valve cover (7) is provided on the upper end of the valve body support seat (11), a second threaded hole (72) corresponding to the valve body support seat (11) is provided on the valve cover (7), and the first threaded holes (71) and the second threaded holes (72) are connected by bolts (73) to fasten the valve cover (7) on the valve body support seat (11).

11. The solenoid valve according to any one of claims 1 to 9, characterized in that said first seal (12) is a sealing ring.

12. The solenoid valve according to any one of claims 1 to 9, characterized in that the pressing piece (5) is a pressing nut.

13. A solenoid valve assembly comprising a solenoid valve according to any one of claims 1 to 12.

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