CN219975401U - Electromagnetic valve - Google Patents

Abstract

The utility model relates to a solenoid valve, which comprises a valve body and an iron core component, wherein an inlet, a valve port and an outlet are formed on the valve body, the inlet and the outlet are communicated through the valve port, and the iron core component is arranged on the valve body and used for controlling the on/off of the valve port; the electromagnetic valve also comprises a filter screen cylinder, the filter screen cylinder is arranged in the valve body and comprises a filter screen, the filter screen is arranged at the peripheral position of the valve port, and medium introduced by the inlet can pass through the filter screen and flow into the valve port. The utility model has the advantages that: the filter screen is arranged at the peripheral position of the valve port, so that the medium can flow through the filter screen after being led in from the inlet, and the purpose of filtering the medium is achieved.

Description

Electromagnetic valve

Technical Field

The utility model relates to the technical field of valves, in particular to an electromagnetic valve.

Background

Solenoid valves are an industrial device that utilizes a solenoid-operated medium. In conventional solenoid valves, the medium flowing in from the inlet is usually directly discharged from the outlet without treatment. However, after the conventional electromagnetic valve is used for a long time, impurities in the medium are gradually accumulated in the valve body to block the interior of the valve body, so that the electromagnetic valve is easily damaged, and the service performance of the electromagnetic valve is affected.

Disclosure of Invention

Based on this, it is necessary to provide a solenoid valve having a filtering function.

In order to solve the technical problems, the utility model provides the following technical scheme:

the electromagnetic valve comprises a valve body and an iron core component, wherein an inlet, a valve port and an outlet are formed on the valve body, the inlet is communicated with the outlet through the valve port, and the iron core component is arranged on the valve body and used for controlling the opening/closing of the valve port;

the electromagnetic valve further comprises a filter screen cylinder, the filter screen cylinder is installed in the valve body, the filter screen cylinder comprises a filter screen, the filter screen is arranged at the peripheral position of the valve port, and medium led in by the inlet can pass through the filter screen and flow into the valve port.

It can be understood that the filter screen is arranged at the peripheral position of the valve port, so that the medium can flow through the filter screen after being led in from the inlet, and the purpose of filtering the medium is achieved.

In one embodiment, the valve body is further provided with a step surface, and the step surface is arranged at the peripheral position of the valve port;

the filter screen cylinder also comprises a support frame, the filter screen is mounted on the support frame, and the support frame abuts against the step surface so as to limit the filter screen cylinder to the valve body.

It can be understood that braced frame can provide certain supporting strength for the filter screen, and sets up the braced frame butt of step face be convenient for, makes the filter screen section of thick bamboo can not the downward displacement to limit the filter screen section of thick bamboo in the valve body.

In one embodiment, the supporting frame extends outwards towards the direction part of the iron core component relative to the valve port, and the iron core component part extends into the filter screen and can reciprocate relative to the filter screen so as to control the on/off of the valve port;

wherein, the filter screen with the valve body with be formed with the clearance that presets respectively between the iron core subassembly.

It can be understood that preset gaps are formed between the filter screen and the valve body and the iron core assembly respectively, and the two preset gaps are respectively positioned at two sides of the filter screen, so that the medium flowing in from the inlet can flow from the preset gap at one side of the filter screen to the preset gap at the other side of the filter screen, and the filtration of the medium is realized.

In one embodiment, the number of the filter screens is a plurality, and the plurality of filter screens are arranged at intervals along the circumferential direction of the support frame;

the filter screens surround and form a first filter cavity, and the cavity diameter of the first filter cavity gradually increases towards the direction of the iron core component.

It will be appreciated that, in other words, the filter cartridge is configured as a conical structure in combination with the internal structure of the solenoid valve, so that a channel is formed between the filter cartridge and the valve body at the end of the smaller bore of the filter cartridge, so that the medium flowing in from the inlet can enter the preset gap formed between the filter cartridge and the valve body through the channel.

In one embodiment, the filter screen cylinder further comprises a first sealing ring, wherein the first sealing ring is arranged between the support frame and the valve body and is used for assembling and sealing the support frame and the valve body.

It can be understood that the first sealing ring is arranged to seal the supporting frame and the valve body, so that the medium flowing through the preset gap between the valve body and the filter screen cylinder is prevented from flowing to the valve port without passing through the filter screen, and the filtering effect is prevented from being influenced.

In one embodiment, the filter screen is arranged on one side of the step surface, which is away from the iron core component, a connecting channel is formed between the part of the valve body where the valve port is located and the filter screen barrel, and the connecting channel is communicated with the inlet;

the support frame is provided with a communication hole communicated with the valve port, and the communication hole can be communicated with the connecting channel through the filter screen.

It is understood that the communicating hole is formed so that the medium flowing in the connecting channel can flow out from the communicating hole after flowing through the filter screen, and then flows to the valve port from the communicating hole.

In one embodiment, the filter screen cylinder further comprises a second sealing ring, and the second sealing ring is arranged at the peripheral position of the connecting channel, is respectively in butt fit with the supporting frame and the valve body, and is used for assembling and sealing the supporting frame and the valve body.

It can be understood that the second sealing ring is arranged on the periphery of the connecting channel, so that the supporting frame and the valve body are sealed by the second sealing ring, and therefore, the medium flowing in from the inlet can only flow to the connecting channel, and the influence on the filtering effect caused by the fact that the medium does not directly flow between the filter screen cylinder and the valve body through the filter screen is avoided.

In one embodiment, the number of the filter screens is a plurality, and the plurality of filter screens are arranged at intervals along the circumferential direction of the support frame;

the filter screens surround and form a second filter cavity, and the cavity diameters of the second filter cavities are equal to each other in the direction of the iron core component.

It is understood that the filter screen cylinder has a cylindrical structure so as to be matched with the structure of the valve body, so that the medium flowing from the inlet smoothly flows in the valve body and the filtering effect is realized.

In one embodiment, the iron core assembly comprises a magnetism isolating pipe, a movable iron core and a winding coil, wherein the movable iron core is slidably arranged in the magnetism isolating pipe and matched with the winding coil, and the winding coil can drive the movable iron core to move relative to the magnetism isolating pipe when being electrified;

the movable iron core is provided with a diaphragm, so that the diaphragm can control the on/off of the valve port under the drive of the movable iron core.

It can be understood that the diaphragm is arranged on the movable iron core, so that the diaphragm can be driven by the movable iron core to block or open the valve port, thereby controlling the flow of medium in the valve body.

In one embodiment, the movable iron core is provided with a mounting part, and the diaphragm can be mounted on the movable iron core through the mounting part;

and the movable iron core is also provided with an exhaust hole, and the exhaust hole is communicated with the mounting part. It can be understood that the vent holes are formed in the movable iron core, air around the diaphragm is conveniently discharged, so that the diaphragm is convenient to install, and the air pressure can be balanced through the vent holes when the electromagnetic valve works, so that the condition of uncertain pressure can not occur.

Due to the application of the scheme, compared with the prior art, the utility model has the following advantages:

according to the electromagnetic valve disclosed by the utility model, the filter screen cylinder is arranged at the peripheral position of the valve port, so that a medium can flow through the filter screen cylinder after being led in from the inlet, the purpose of filtering the medium is achieved, and the movable iron core is provided with the exhaust hole, so that the diaphragm is convenient to install and the air pressure is balanced during electromagnetic operation.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present utility model, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following descriptions are only some embodiments of the present utility model, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

Fig. 1 is a schematic structural diagram of an electromagnetic valve according to an embodiment of the present utility model.

Fig. 2 is a cross-sectional view of a solenoid valve according to an embodiment of the utility model.

Fig. 3 is a perspective view of a filter cartridge according to an embodiment of the present utility model.

Fig. 4 is a schematic structural diagram of a filter screen cylinder according to an embodiment of the present utility model.

Fig. 5 is a cross-sectional view of a solenoid valve according to another embodiment of the utility model.

Fig. 6 is a perspective view of a filter cartridge according to another embodiment of the present utility model.

Fig. 7 is a schematic structural diagram of a filter screen cylinder according to another embodiment of the present utility model.

Reference numerals: 100. an electromagnetic valve; 10. a valve body; 11. an inlet; 12. a valve port; 13. an outlet; 14. a step surface; 15. a power-on plug; 20. an iron core assembly; 21. a magnetism isolating pipe; 22. a movable iron core; 221. a membrane; 222. a mounting part; 223. an exhaust hole; 23. a winding coil; 24. fixing an iron core; 25. a tower-type spring; 30. a filter screen cylinder; 31. a filter screen; 32. a support frame; 321. a groove; 322. a communication hole; 33. a first seal ring; 34. and a second sealing ring.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and the like are used in the description of the present utility model for the purpose of illustration only and do not represent the only embodiment.

Furthermore, the terms "first," "second," and the like, 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. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" on a second feature may be that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through intermedial media. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is less level than the second feature.

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

Referring to fig. 1, 2 and 5, an electromagnetic valve 100 according to an embodiment of the present utility model includes a valve body 10 and a core assembly 20, wherein the core assembly 20 is installed in the valve body 10 for controlling the flow or interception of a medium flowing through the valve body 10. The valve body 10 is provided with an inlet 11, a valve port 12 and an outlet 13, the inlet 11 is communicated with the outlet 13 through the valve port 12, and the iron core assembly 20 is arranged above the valve port 12, so that the iron core assembly 20 controls the circulation or interception of medium in the valve body 10 by controlling the opening or closing of the valve port 12.

As shown in fig. 2 and 5, in one embodiment, the core assembly 20 includes a magnetic shielding tube 21, a movable core 22, a winding coil 23, a fixed core 24, and a tower spring 25, the movable core 22 is installed between the fixed core 24 and the valve port 12, and the movable core 22 and the fixed core 24 are partially installed in the magnetic shielding tube 21, and the movable core 22 can slide relative to the magnetic shielding tube 21.

Further, the movable iron core 22 is formed with a mounting portion 222, the mounting portion 222 is configured as a mounting chamber formed by the movable iron core 22 and inward at one end close to the valve port 12, the membrane 221 is mounted on the movable iron core 22 through the mounting chamber, and the membrane 221 can abut against the valve port 12 under the driving of the movable iron core 22 to seal the valve port 12, or keep away from the valve port 12 to enable medium to circulate in the valve port 12. Of course, the structure of the mounting portion 222 is not limited to this, and may be a planar surface.

When the electromagnetic valve 100 is electrified through the electrifying plug 15, the fixed iron core 24 is magnetized, the movable iron core 22 is matched with the winding coil 23, so that after the winding coil 23 is electrified, the movable iron core 22 is magnetized, the fixed iron core 24 is attracted by the movable iron core 22, the tower-shaped spring 25 moves towards a position far away from the valve port 12 relative to the magnetism isolating pipe 21, the movable iron core 22 is compressed, the valve port 12 is opened at the moment, and a medium in the valve body 10 can flow to an outlet through the valve port 12.

When the electromagnetic valve 100 is powered off, the attraction force of the fixed iron core 24 to the movable iron core 22 disappears, the movable iron core 22 is reset under the action of the elastic force of the tower-shaped spring 25, and at the moment, the membrane 221 is driven by the movable iron core 22 to block the valve port 12 so as to cut off the medium flow in the valve body 10.

In an embodiment, the movable iron core 22 is further provided with an air vent 223, and the air vent 223 is communicated with the mounting portion 222, so that redundant air is discharged during the mounting of the membrane 221, and the air pressure can be balanced through the air vent 223 during the operation of the electromagnetic valve 100, so that the condition of uncertain pressure of the electromagnetic valve 100 is avoided.

As shown in fig. 3, 4, 6 and 7, in an embodiment, the electromagnetic valve 100 further includes a filter screen drum 30, the filter screen drum 30 includes a plurality of filter screens 31 and a support frame 32, and the filter screens 31 are arranged at intervals along the circumferential direction of the support frame 32, so that the support frame 32 provides a certain supporting strength for the filter screen 31, and installation of the filter screen drum 30 is facilitated.

The filter screen drum 30 is installed in the valve body 10 such that the filter screen 31 is disposed at the outer peripheral position of the valve port 12, and the medium introduced through the inlet 11 can flow through the filter screen 31 to filter out impurities in the medium, and then flow into the valve port 12, thereby achieving the purpose of filtering the medium flowing into the solenoid valve 100.

As shown in fig. 2 to 4, in an embodiment, the filter screen drum 30 is substantially conical and cylindrical, and the plurality of filter screens 31 are surrounded along the circumferential direction of the support frame 32 to form a first filter cavity, and the cavity diameter of the first filter cavity gradually increases toward the direction of the core assembly 20. The supporting frame 32 extends outwards relative to the valve port 12 towards the direction of the iron core assembly 20, and the iron core assembly 20 extends into the first filter cavity and can reciprocate relative to the filter screen 31 to control the on/off of the valve port 12. The outer peripheral position of the upper valve port 12 of the valve body 10 is provided with a step surface 14, and one end of the filter screen cylinder 30 with smaller cavity diameter is abutted against the step surface 14 to limit the downward displacement of the filter screen cylinder 30. The larger end of the cavity diameter of the filter screen cylinder 30 abuts against the magnetism isolating tube 21 to limit the upward displacement of the filter screen cylinder 30, so that the filter screen cylinder 30 is limited in the valve body 10.

Further, preset gaps are formed between the filter screen 31 and the valve body 10 and the iron core assembly 20, and the two preset gaps are respectively located at two sides of the filter screen 31, so that the medium flowing in from the inlet 11 can flow from the preset gap formed between the filter screen 31 and the inner wall of the valve body 10 to the preset gap formed between the filter screen 31 and the iron core assembly 20, and filtering of the medium is achieved.

Further, at the smaller diameter end of the filter screen cylinder 30, a passage is formed between a portion of the support frame 32 and the inner wall of the valve body 10, so that the medium flowing in from the inlet 11 can enter the preset gap formed between the filter screen 31 and the inner wall of the valve body 10 through the passage.

Preferably, at the end of the filter screen cylinder 30 with a larger cavity diameter, a first sealing ring 33 is arranged between a part of the supporting frame 32 and the inner wall of the valve body 10, and is used for sealing and assembling the supporting frame 32 and the inner wall of the valve body 10, so that the medium flowing through the preset gap between the inner wall of the valve body 10 and the filter screen 31 is prevented from flowing to the valve port 12 without passing through the filter screen 31, and the filtering effect is prevented from being influenced. The support frame 32 is provided with a groove 321, and the first sealing ring 33 is placed in the groove 321, so that the first sealing ring 33 is convenient to limit and assemble.

As shown in fig. 5 to 7, in an embodiment, the filter screen drum 30 is substantially cylindrical, and the plurality of filter screens 31 are arranged at intervals along the circumferential direction of the support frame 32 and surround to form a second filter cavity, the cavity diameters of the second filter cavity are equal to each other in the direction of the core assembly 20, and the part where the valve port 12 is located is disposed through the second filter cavity. The filter screen 31 is disposed on a side of the step surface 14 facing away from the core assembly 20, and a portion of the support frame 32 abuts between the step surface 14 and the magnetism insulator 21, so that the filter screen 31 is limited at the peripheral position of the valve port 12.

Further, the support frame 32 is further provided with a communication hole 322, and the communication hole 322 is disposed on the other side of the step surface 14 near the core assembly 20. The communication hole 322 is arranged along the circumferential direction of the support frame 32 and is capable of communicating with the valve port 12 such that medium flowing through the filter mesh 31 enters the valve port 12 through the communication hole 322.

A connection passage is formed between the portion of the valve port 12 and the filter cartridge 30, the connection passage communicates with the inlet 11, and the communication hole 322 can communicate with the connection passage through the filter screen 31 so that the medium flowing in from the inlet 11 flows through the connection passage, passes through the filter screen 31, then flows to the valve port 12 through the communication hole 322, and finally flows out from the outlet 13. Moreover, the filter screen cylinder 30 is arranged between the supporting frame 32 near one end of the inlet 11 and the inner wall of the valve body 10 in a sealing way, so that the medium flowing in from the inlet 11 can only flow into the connecting channel, and the influence on the filtering effect caused by the fact that the medium directly flows to the communication hole 322 without passing through the filter screen 31 is avoided.

Preferably, the filter screen cylinder 30 further comprises a second sealing ring 34, and the second sealing ring 34 is arranged at the peripheral position of the connecting channel and is respectively in abutting fit with the supporting frame 32 and the inner wall of the valve body 10, so that the sealing assembly between the supporting frame 32 and the valve body 10 is realized. The support frame 32 is provided with a groove 321, and the second sealing ring 34 is placed in the groove 321, so that the second sealing ring 34 is mounted between the valve body 10 and the support frame 32 in a limiting manner.

It should be noted that, the structure of the filter screen cylinder 30 is not limited to the above-mentioned arrangement, and in other embodiments, the filter screen cylinder 30 may be configured as a rectangular cylinder, which is not described herein.

In summary, during the operation of the solenoid valve 100, the medium flows into the valve body 10 from the inlet 11, flows through the filter screen 31 from a preset gap formed between the filter screen 31 and the inner wall of the valve body 10 or flows through the filter screen 31 from a preset gap formed between the filter screen 31 and the valve port 12, flows to the valve port 12 and flows out from the outlet 13, and finally achieves the function of filtering impurities in the medium flowing through the valve body 10 by the solenoid valve 100.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of the utility model should be determined from the following claims.

Claims (10)

1. The electromagnetic valve comprises a valve body (10) and an iron core assembly (20), wherein an inlet (11), a valve port (12) and an outlet (13) are formed on the valve body (10), the inlet (11) and the outlet (13) are communicated through the valve port (12), and the iron core assembly (20) is arranged on the valve body (10) and is used for controlling the opening/closing of the valve port (12);

the electromagnetic valve is characterized in that the electromagnetic valve (100) further comprises a filter screen barrel (30), the filter screen barrel (30) is installed in the valve body (10), the filter screen barrel (30) comprises a filter screen (31), the filter screen (31) is arranged at the peripheral position of the valve port (12), and a medium led in by the inlet (11) can pass through the filter screen (31) and flow into the valve port (12).

2. The electromagnetic valve according to claim 1, characterized in that the valve body (10) is further formed with a step surface (14), the step surface (14) being provided at a peripheral position of the valve port (12);

the filter screen cylinder (30) further comprises a support frame (32), the filter screen (31) is mounted on the support frame (32), and the support frame (32) abuts against the step surface (14) so as to limit the filter screen cylinder (30) to the valve body (10).

3. The solenoid valve according to claim 2, characterized in that said support frame (32) projects partially outwards with respect to said valve port (12) towards said core assembly (20), said core assembly (20) partially projecting into said filter screen (31) and being reciprocally movable with respect to said filter screen (31) to control the on/off of said valve port (12);

wherein, a preset gap is respectively formed between the filter screen (31), the valve body (10) and the iron core component (20).

4. A solenoid valve according to claim 3, characterised in that said filter mesh (31) is a plurality in number, a plurality of said filter mesh (31) being arranged at intervals along the circumferential direction of said support frame (32);

wherein, a plurality of filter screens (31) surround and are formed with first filtration appearance chamber, the chamber diameter in first filtration appearance chamber is towards the direction of iron core subassembly (20) increases gradually.

5. A solenoid valve according to claim 3, characterised in that the filter cartridge (30) further comprises a first sealing ring (33), said first sealing ring (33) being arranged between the support frame (32) and the valve body (10) for fitting sealing the support frame (32) with the valve body (10).

6. The electromagnetic valve according to claim 2, characterized in that the filter screen (31) is arranged on one side of the step surface (14) away from the iron core assembly (20), a connecting channel is formed between the part of the valve body (10) where the valve port (12) is located and the filter screen cylinder (30), and the connecting channel is communicated with the inlet (11);

the support frame (32) is provided with a communication hole (322) communicated with the valve port (12), and the communication hole (322) can be communicated with the connecting channel through the filter screen (31).

7. The electromagnetic valve according to claim 6, wherein the filter screen cylinder (30) further comprises a second sealing ring (34), and the second sealing ring (34) is disposed at a peripheral position of the connecting channel and is respectively in abutting fit with the supporting frame (32) and the valve body (10) for assembling and sealing the supporting frame (32) and the valve body (10).

8. The electromagnetic valve according to claim 6, characterized in that the number of the filter screens (31) is plural, and a plurality of the filter screens (31) are arranged at intervals along the circumferential direction of the support frame (32);

wherein, a plurality of filter screens (31) surround and form the second and filter the appearance chamber, the chamber footpath in second filters appearance chamber towards the direction of iron core subassembly (20) equals each other.

9. The solenoid valve according to claim 1, wherein said core assembly (20) includes a magnetic separator tube (21), a movable core (22) and a winding coil (23), said movable core (22) being slidably mounted within said magnetic separator tube (21) and cooperating with said winding coil (23), and energizing said winding coil (23) being capable of driving said movable core (22) into movement relative to said magnetic separator tube (21);

the movable iron core (22) is provided with a membrane (221), so that the membrane (221) can control the on/off of the valve port (12) under the drive of the movable iron core (22).

10. The electromagnetic valve according to claim 9, characterized in that the movable iron core (22) is formed with a mounting portion (222), and the diaphragm (221) can be mounted on the movable iron core (22) through the mounting portion (222);

wherein, vent holes (223) are also arranged on the movable iron core (22), and the vent holes (223) are communicated with the mounting part (222).