CN217153083U

CN217153083U - Electromagnetic valve

Info

Publication number: CN217153083U
Application number: CN202122999982.8U
Authority: CN
Inventors: 廖兵兵; 张平; 霍志江
Original assignee: Ningbo Jiayin Electrical And Mechanical Technology Co ltd
Current assignee: Ningbo Jiayin Electrical And Mechanical Technology Co ltd
Priority date: 2021-11-27
Filing date: 2021-11-27
Publication date: 2022-08-09
Anticipated expiration: 2031-11-27

Abstract

The utility model relates to a solenoid valve, which comprises a valve body and a diaphragm component, wherein a baffle ring is arranged on the valve body to separate a valve cavity formed inwards by the valve body into a liquid inlet cavity and a liquid outlet cavity; the diaphragm assembly can selectively abut against the baffle ring so as to control the opening and closing between the liquid inlet cavity and the liquid outlet cavity; the electromagnetic valve further comprises a pilot seat and an elastic piece, the pilot seat is installed on the valve body, the elastic piece is arranged between the pilot seat and the diaphragm assembly, and the elastic piece can elastically push the diaphragm assembly towards the direction of the baffle ring. The utility model discloses a diaphragm assembly receives the elasticity of elastic component to support to push and support and press on keeping off the ring on the solenoid valve, and then make this solenoid valve during operation can satisfy the zero pressure of medium nothing leak, have the effect that improves the product performance of this solenoid valve.

Description

Electromagnetic valve

Technical Field

The utility model belongs to the technical field of flow control is relevant, especially, relate to an electromagnetic valve.

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.

At present, the existing small-sized solenoid valve is limited by the influence of the through hole formed on the diaphragm, so that when the small-sized solenoid valve works, the pressure of a medium introduced into a valve body of the small-sized solenoid valve is small, or when the medium introduced into the valve body has no pressure, the small-sized solenoid valve is easy to leak.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a solenoid valve for solving the above technical problems.

A solenoid valve comprises a valve body and a diaphragm assembly, wherein a baffle ring is arranged on the valve body to divide a valve cavity formed inwards by the valve body into a liquid inlet cavity and a liquid outlet cavity; the diaphragm assembly can selectively abut against the baffle ring so as to control the opening and closing between the liquid inlet cavity and the liquid outlet cavity;

the electromagnetic valve further comprises a pilot seat and an elastic piece, the pilot seat is installed on the valve body, the elastic piece is arranged between the pilot seat and the diaphragm assembly, and the elastic piece can elastically push the diaphragm assembly towards the direction of the stop ring.

In this application, through the structure setting of above-mentioned guide seat and elastic component for membrane module receives the elasticity of elastic component to support to push and support and press on keeping off the ring on this solenoid valve, and then makes the non-leakage when this solenoid valve during operation can satisfy medium zero pressure, has the effect that improves the product performance of this solenoid valve.

In one embodiment, the elastic member is a compression spring, one end of the compression spring abuts against the guide seat, and the other end of the compression spring abuts against the diaphragm assembly.

It will be appreciated that the elastic element is embodied as a compression spring, whereby the structural arrangement of the elastic element is embodied.

In one embodiment, the diaphragm assembly comprises a pressure plate and a diaphragm, the pressure plate being mounted on the diaphragm; wherein, a limiting groove is arranged on one end surface of the pressing plate facing the guide seat, and one end part of the elastic piece far away from the guide seat extends into the limiting groove and is abutted against the pressing plate.

It can be understood that, through the above-mentioned structural arrangement, the structure of the diaphragm assembly is specifically realized, and the elastic member abuts against the limiting groove of the pressure plate, so as to ensure the stability of the spring member abutting against the pressure plate.

In one embodiment, the pilot seat is matched with the diaphragm assembly and forms a pressure chamber, wherein a boosting hole is formed in the diaphragm assembly, and a medium led into the liquid inlet chamber can enter the pressure chamber through the boosting hole.

It will be appreciated that the structural arrangement of the booster holes in the diaphragm assembly is embodied by the structural arrangement described above.

In one embodiment, the guide seat is provided with a pressure reducing hole, the pressure reducing hole is respectively communicated with the pressure cavity and the liquid outlet cavity, and the medium introduced into the pressure cavity can enter the liquid outlet cavity through the pressure reducing hole.

It can be understood that, through the above-mentioned structural arrangement, the structural arrangement of the pressure reduction hole on the solenoid valve is specifically realized, and the pressure reduction hole is arranged on the guide seat, so that the movement stroke of the diaphragm assembly is not affected by the pressure reduction hole when the solenoid valve works.

In one embodiment, the liquid inlet of the pressure reduction hole is arranged at one end of the guide seat far away from the membrane assembly, and the liquid outlet of the pressure reduction hole is arranged on the peripheral wall of the guide seat.

It can be understood that, by the above-described arrangement, the structural arrangement of the pressure-reducing hole on the pilot bearing is realized in particular, so that the diaphragm assembly can be abutted against the pilot bearing during movement, thereby ensuring the medium flow during operation of the solenoid valve.

In one embodiment, the valve body is provided with a connecting channel, and the depressurization hole is communicated with the liquid outlet cavity through the connecting channel.

It can be understood that, through the structural arrangement, the communication between the pressure reducing hole and the liquid outlet cavity on the valve body is realized.

In one embodiment, the solenoid valve further comprises a core assembly capable of selectively blocking the liquid inlet.

It can be understood that the selective plugging of the pressure reduction hole when the electromagnetic valve works is realized through the structural arrangement.

In one embodiment, the iron core assembly comprises a framework, a magnetizer, a fixed iron core, a movable iron core, an iron core spring and a coil, wherein the magnetizer is installed on the framework, and the coil is arranged at the periphery of the framework and is limited by the magnetizer; the fixed iron core passes through the magnetizer reaches it is spacing that the skeleton is installed, the iron core spring set up in fixed iron core with position between the activity iron core, wherein the rigid coupling has sealed end cap on the activity iron core, just the activity iron core can drive sealed end cap selectively shutoff the inlet.

It will be appreciated that the structural arrangement of the core assembly is embodied by the structural arrangement described above.

In one embodiment, the frame, the magnetizer and the coil are molded in an integrated plastic package mode.

It can be understood that, through the above-mentioned structural arrangement, the iron core assembly is of an integral structure, so that the modular production of the iron core assembly is realized, and the electromagnetic valve is convenient to integrally assemble.

Drawings

Fig. 1 is a cross-sectional view of a solenoid valve according to an embodiment of the present application.

Fig. 2 is a schematic view of the structure of a membrane assembly according to the present application.

Fig. 3 is a schematic structural diagram of a guide seat in the present application.

10, a valve body; 11. a baffle ring; 12. a connecting channel; 100. a valve cavity; 101. a liquid inlet cavity; 102. a liquid outlet cavity; 103. a pressure chamber; 20. a diaphragm assembly; 201. a pressure boosting hole; 21. pressing a plate; 211. a limiting groove; 22. a membrane; 30. a pilot base; 301. a peripheral wall; 31. a pressure reduction well; 311. a liquid inlet; 312. a liquid outlet; 32. a flow passage hole; 40. an elastic member; 41. a pressure spring; 50. an iron core assembly; 51. a framework; 52. a magnetizer; 53. fixing the iron core; 54. a movable iron core; 541. sealing the plug; 55. an iron core spring; 56. a coil; 61. a first seal ring; 62. and a second seal ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, an electromagnetic valve according to an embodiment of the present invention includes a valve body 10, a diaphragm assembly 20, a pilot seat 30, an elastic member 40, and an iron core assembly 50.

The valve body 10 is provided with a baffle ring 11 to divide a valve cavity 100 formed inward of the valve body 10 into a liquid inlet cavity 101 and a liquid outlet cavity 102, and the diaphragm assembly 20 can selectively abut against the baffle ring 11 to control the connection and disconnection between the liquid inlet cavity 101 and the liquid outlet cavity 102, so as to control whether a medium in the liquid inlet cavity 101 is guided out of the liquid outlet cavity 102, that is, to control the flow rate of the electromagnetic valve during operation.

The pilot seat 30 of the present embodiment is mounted on the valve body 10, the elastic element 40 is disposed between the pilot seat 30 and the diaphragm assembly 20, and the elastic element 40 can press the diaphragm assembly 20 to limit the diaphragm assembly 20 to separate from the baffle ring 11. That is to say, the diaphragm assembly 20 of the solenoid valve is always pressed against the stop ring 11 by the elasticity of the elastic member 40, so that the solenoid valve can meet the requirement of no leakage when the medium is at zero pressure during operation, and the product performance of the solenoid valve is improved.

Specifically, the elastic member 40 is configured as a compression spring 41, preferably a tower-shaped compression spring, one end of the compression spring 41 abuts against the guide seat 30, and the other end of the compression spring abuts against the diaphragm assembly 20, so as to implement the structural configuration of the elastic member 40, so that the elastic member 40 can be obtained from local materials, and has the effect of reducing cost. Of course, the elastic member 40 is not limited to the illustration, and it is obvious to those skilled in the art that a plurality of compression springs 41 may be provided, a plurality of compression springs 41 may be uniformly arranged around the diaphragm assembly 20, and the elastic member 40 may be provided as an elastic rubber sleeve.

As shown in fig. 2, the diaphragm assembly 20 includes a pressure plate 21 and a diaphragm 22, the pressure plate 21 being mounted on the diaphragm 22; wherein, a limiting groove 211 is opened on one end surface of the pressing plate 21 facing the guide seat 30, one end part of the elastic element 40 far away from the guide seat 30 extends into the limiting groove 211 and abuts against the pressing plate 21, thereby realizing the structure of the diaphragm assembly 20, and the elastic element 40 abuts against the limiting groove 211 of the pressing plate 21, thereby ensuring the stability when the elastic element 40 abuts against the pressing plate 21.

As shown in fig. 1, the pilot seat 30 is matched with the diaphragm assembly 20 and forms a pressure chamber 103, a pressure boosting hole 201 is formed on the diaphragm assembly 20, and a medium introduced into the liquid inlet chamber 101 can enter the pressure chamber 103 through the pressure boosting hole 201, thereby realizing the structural arrangement of the pressure boosting hole 201 on the diaphragm assembly 20.

The pressure reducing hole 31 is formed in the pilot seat 30, the pressure reducing hole 31 is respectively communicated with the pressure cavity 103 and the liquid outlet cavity 102, and a medium led into the pressure cavity 103 can enter the liquid outlet cavity 102 through the pressure reducing hole 31, so that the structural arrangement of the pressure reducing hole 31 on the electromagnetic valve is specifically realized, and the pressure reducing hole 31 is formed in the pilot seat 30, so that the movement stroke of the diaphragm assembly 20 is not influenced by the pressure reducing hole 31 when the electromagnetic valve works.

It can be understood that the pressure reducing hole 31 formed in the pilot seat 30 is applied to the solenoid valve to release pressure to the pressure chamber 103, once the pressure reducing hole 31 is opened, the medium in the pressure chamber 103 flows into the liquid outlet chamber 102 through the pressure reducing hole 31, so that the pressure of the medium in the liquid inlet chamber 101 to the diaphragm assembly 20 is greater than the pressure of the medium in the pressure chamber 103 to the diaphragm assembly 20, the diaphragm assembly 20 is lifted, the liquid inlet chamber 101 is communicated with the liquid outlet chamber 102, and liquid outlet during operation of the solenoid valve is achieved.

As shown in fig. 3, the liquid inlet 311 of the pressure reducing hole 31 is disposed on the pilot base 30 at an end far away from the diaphragm assembly 20, and the liquid outlet 312 is disposed on the peripheral wall 301 of the pilot base 30, so as to implement the structural arrangement of the pressure reducing hole 31 on the pilot base 30, so that the diaphragm assembly 20 can be attached to the pilot base 30 when moving, and further ensure the medium flow when the solenoid valve works.

Correspondingly, the valve body 10 is provided with a connecting channel 12, and the pressure reducing hole 31 is communicated with the liquid outlet cavity 102 through the connecting channel 12, so that the communication between the pressure reducing hole 31 and the liquid outlet cavity 102 on the valve body 10 is realized.

The core assembly 50 can selectively block the liquid inlet 311, as shown in fig. 3, the pilot seat 30 is provided with a flow passage hole 32 at the peripheral position of the liquid inlet 311 on the pressure reduction hole 31, and the medium in the pressure chamber 103 can enter the position of the liquid inlet 311 through the flow passage hole 32, and selectively controls the opening and closing of the liquid inlet 311 through the core assembly 50, so that when the electromagnetic valve works, the medium flow can be controlled by controlling the core assembly 50.

Specifically, the iron core assembly 50 includes a framework 51, a magnetizer 52, a fixed iron core 53, a movable iron core 54, an iron core spring 55 and a coil 56, the magnetizer 52 is installed on the framework 51, and the coil 56 is arranged at the periphery of the framework 51 and is limited by the magnetizer 52; the fixed iron core 53 is installed and limited through the magnetizer 52 and the framework 51, the iron core spring 55 is arranged at a position between the fixed iron core 53 and the movable iron core 54, wherein the movable iron core 54 is fixedly connected with a sealing plug 541, and the movable iron core 54 can drive the sealing plug 541 to selectively plug the liquid inlet 311, so that the structural arrangement of the iron core assembly 50 is specifically realized.

Preferably, the upper framework 51, the magnetizer 52 and the coil 56 of the iron core assembly 50 are integrally molded by plastic so that the iron core assembly 50 is of an integral structure, thereby realizing the modular production of the iron core assembly 50 and having the function of facilitating the integral assembly of the solenoid valve.

In order to ensure the sealing performance of the entire solenoid valve structure, a first seal 61 is provided between the valve body 10 and the pilot seat 30, and a second seal 62 is provided between the pilot seat 30 and the frame 51, which will not be described herein.

To sum up, when the solenoid valve of the present invention works, when a medium with zero pressure is introduced into the solenoid valve, the diaphragm assembly 20 can always abut against the stop ring 11 of the valve body 10 under the elastic pushing of the elastic member 40, so as to realize no leakage when the solenoid valve works; the pressure reducing hole 31 and the pressure increasing hole 201 are separately formed, and the liquid outlet 312 of the pressure reducing hole 31 is formed in the peripheral wall 301 of the pilot base 30, so as to avoid a small flow rate when the solenoid valve works due to the limited stroke of the diaphragm assembly 20, thereby ensuring the performance of the solenoid valve as a whole.

The features of the above embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the features in the above embodiments are not described, but should be construed as being within the scope of the present specification as long as there is no contradiction between the combinations of the features.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be taken as limiting the present invention, and that suitable modifications and variations of the above embodiments are within the scope of the invention as claimed.

Claims

1. A solenoid valve comprises a valve body (10) and a diaphragm assembly (20), wherein a baffle ring (11) is arranged on the valve body (10) to divide a valve cavity (100) formed inwards by the valve body (10) into a liquid inlet cavity (101) and a liquid outlet cavity (102); the diaphragm assembly (20) can selectively abut against the baffle ring (11) to control the opening and closing between the liquid inlet cavity (101) and the liquid outlet cavity (102);

the method is characterized in that: the electromagnetic valve further comprises a guide seat (30) and an elastic piece (40), the guide seat (30) is installed on the valve body (10), the elastic piece (40) is arranged between the guide seat (30) and the diaphragm assembly (20), and the elastic piece (40) can elastically push the diaphragm assembly (20) towards the direction of the stop ring (11).

2. The solenoid valve according to claim 1, wherein: the elastic piece (40) is provided with a pressure spring (41), one end of the pressure spring (41) abuts against the guide seat (30), and the other end of the pressure spring abuts against the diaphragm assembly (20).

3. The solenoid valve according to claim 1, wherein: the diaphragm assembly (20) comprises a pressure plate (21) and a diaphragm (22), wherein the pressure plate (21) is installed on the diaphragm (22); wherein, a limiting groove (211) is arranged on one end surface of the pressure plate (21) facing the guide seat (30), and one end part of the elastic piece (40) far away from the guide seat (30) extends into the limiting groove (211) and is abutted against the pressure plate (21).

4. The solenoid valve according to claim 1, wherein: the guide seat (30) is matched with the diaphragm assembly (20) and is provided with a pressure cavity (103), wherein a boosting hole (201) is formed in the diaphragm assembly (20), and a medium led into the liquid inlet cavity (101) can enter the pressure cavity (103) through the boosting hole (201).

5. The solenoid valve according to claim 4, wherein: the guide seat (30) is provided with a pressure reducing hole (31), the pressure reducing hole (31) is respectively communicated with the pressure cavity (103) and the liquid outlet cavity (102), and a medium led into the pressure cavity (103) can enter the liquid outlet cavity (102) through the pressure reducing hole (31).

6. The solenoid valve according to claim 5, wherein: the liquid inlet (311) of the depressurization hole (31) is arranged at one end, far away from the membrane component (20), of the guide seat (30), and the liquid outlet (312) is arranged on the peripheral wall (301) of the guide seat (30).

7. The solenoid valve according to claim 6, wherein: a connecting channel (12) is formed in the valve body (10), and the pressure reduction hole (31) is communicated with the liquid outlet cavity (102) through the connecting channel (12).

8. The solenoid valve according to claim 6, wherein: the solenoid valve further comprises a core assembly (50), wherein the core assembly (50) can selectively block the liquid inlet (311).

9. The solenoid valve as set forth in claim 8, wherein: the iron core assembly (50) comprises a framework (51), a magnetizer (52), a fixed iron core (53), a movable iron core (54), an iron core spring (55) and a coil (56), wherein the magnetizer (52) is installed on the framework (51), and the coil (56) is arranged at the periphery of the framework (51) and is limited by the magnetizer (52); fixed iron core (53) pass through magnetizer (52) and skeleton (51) are installed spacingly, iron core spring (55) set up in fixed iron core (53) with position between activity iron core (54), wherein the rigid coupling has sealed end cap (541) on activity iron core (54), just activity iron core (54) can drive sealed end cap (541) selectively the shutoff the inlet.

10. The solenoid valve as set forth in claim 9, wherein: the framework (51), the magnetizer (52) and the coil (56) are integrally molded in a plastic package mode.