CN219119921U

CN219119921U - Valve core assembly and electromagnetic valve

Info

Publication number: CN219119921U
Application number: CN202223182691.0U
Authority: CN
Inventors: 汤恒威; 史秀文; 李彦飞
Original assignee: Hilite Automobile Technology Co ltd
Current assignee: Hilite Automobile Technology Co ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-06-02
Anticipated expiration: 2032-11-29

Abstract

The utility model provides a valve core assembly and an electromagnetic valve, wherein the valve core assembly comprises a columnar valve core, a sealing gasket arranged at one end of the valve core and a fixing cover for preventing the sealing gasket from being separated from the valve core, the fixing cover is in interference fit with one end of the valve core and is provided with a containing groove and a perforation communicated with the containing groove, the perforation is arranged at one end of the fixing cover far away from the valve core, the sealing gasket comprises a sealing element and a limiting piece connected with one end of the sealing element, and the limiting piece is inserted into the containing groove from the perforation and is propped against the fixing cover to prevent the sealing gasket from being separated from the fixing cover. According to the valve core assembly, the limiting piece is arranged to limit the sealing gasket to prevent separation, the structure is simple and reliable, an adhesive is not needed, parts of each part are easy to process, and the processing cost is low.

Description

Valve core assembly and electromagnetic valve

Technical Field

The utility model relates to a valve core assembly and an electromagnetic valve.

Background

When gas or liquid in the electromagnetic valve needs to be sealed, gaps exist only by the mutual matching of metal parts, the electromagnetic valve cannot be completely sealed, and a rubber gasket is needed.

In the prior art, a groove is processed at the sealing surface of the valve core, rubber and metal are compounded through a hot vulcanization bonding process, namely, an adhesive, the rubber and the metal are subjected to physical and chemical reactions in the rubber vulcanization process, so that bonding is generated.

However, the existence of external stress and internal stress can reduce the bonding strength of the interface, and in particular, under the condition of high temperature or dynamic stress, the adhesive is easy to generate cohesive force damage or interface damage, and then the adhesive is easy to generate mixed damage, so that the adhesive is invalid and the adhesive is caused. And the operation process is complex and the cost is high.

In view of this, there is a need for an improvement over existing solenoid valves to address the above-described problems.

Disclosure of Invention

The utility model aims to provide a valve core assembly so as to solve the problem that a rubber pad of an existing valve core is easy to separate.

In order to achieve the above object, the utility model provides a valve core assembly, which comprises a columnar valve core, a sealing gasket arranged at one end of the valve core, and a fixed cover for preventing the sealing gasket from separating from the valve core, wherein the fixed cover is in interference fit with one end of the valve core, a containing groove and a perforation communicated with the containing groove are arranged on the fixed cover, the perforation is arranged at one end of the fixed cover far away from the valve core, the sealing gasket comprises a sealing element and a limiting element connected with one end of the sealing element, and the limiting element is inserted into the containing groove from the perforation and is propped against the fixed cover to prevent the sealing gasket from separating from the fixed cover.

As a further improvement of the present utility model, the gasket further includes a connecting member connecting the sealing member and the stopper, and a length of the connecting member is equal to a length of the through hole in an axial direction.

As a further improvement of the utility model, the limiting piece is in a truncated cone shape, and the diameter of one end close to the sealing piece is larger than that of one end far away from the sealing piece.

As a further improvement of the utility model, one end of the valve core, which is close to the fixed cover, is outwards protruded along the axial direction and provided with a limiting rod, the limiting piece is inwards provided with a limiting groove, and the limiting rod is inserted into the limiting groove to limit the limiting piece to move along the radial direction.

As a further improvement of the utility model, the length and the diameter of the limiting groove are equal to those of the limiting rod.

As a further improvement of the utility model, the limit rod is arranged coaxially with the valve core.

As a further improvement of the present utility model, the fixing cover includes a fixing portion provided radially around the receiving groove, a limiting portion connected to the fixing portion, and the through hole is provided on the limiting portion.

As a further improvement of the utility model, one end of the valve core, which is close to the sealing gasket, is inwards recessed to form a fixing step, and the fixing part is clamped in the fixing step.

The utility model also provides a solenoid valve which comprises a valve body and the valve core assembly, wherein the valve body is arranged in a hollow mode to form a flow channel cavity, and a valve core part of the valve core assembly is accommodated in the flow channel cavity.

As a further improvement of the utility model, a runner port communicated with the runner cavity is also arranged in the valve body, and the sealing gasket is used for sealing the runner port.

The beneficial effects of the utility model are as follows: according to the electromagnetic valve and valve core assembly, the limiting piece is arranged to limit the sealing gasket to prevent separation, the structure is simple and reliable, an adhesive is not needed, parts of each part are easy to process, the processing cost is low, the matching production among the parts is not needed, the parts can be assembled after being processed, the assembly process is simple, the assembly structure is stable, the forming surface of the sealing gasket can be controlled without pressure influence, the flatness is good, and the sealing effect with the runner opening is good.

Drawings

Fig. 1 is a schematic structural view of the solenoid valve of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

As shown in fig. 1, the solenoid valve 100 of the present utility model includes a valve body 1 and a valve body 2, the valve body 1 being hollow to form a flow passage chamber 11 and a flow passage port 12 to communicate with the flow passage chamber 11, the valve body 2 being configured to seal the flow passage port 12.

The valve core assembly 2 comprises a columnar valve core 21, a sealing gasket 22 arranged at one end of the valve core 21, and a fixed cover 23 for preventing the sealing gasket 22 from being separated from the valve core 21.

The valve core 21 is partially accommodated in the flow channel cavity 11, especially at one end provided with a sealing gasket 22 and a fixed cover 23, the sealing gasket 22 is used for sealing the flow channel port 12, and the valve core 21 is used for driving the sealing gasket 22 to be close to or far away from the flow channel port 12.

One end of the valve core 21, which is close to the sealing gasket 22, is inwards recessed to form a fixing step 211, and the other end of the valve core protrudes out of the valve body 1.

The fixed cover 23 includes a fixed portion 231 and a limiting portion 232 connected to the fixed portion 231, and the fixed portion 231 is clamped in the fixed step 211. The fixing portion 231, the limiting portion 232, and the valve element 21 enclose to form a receiving groove 234, and the fixing portion 231 is disposed radially around the receiving groove 234.

The limiting portion 232 is provided with a through hole 233 and is communicated with the accommodating groove 234. The through hole 233 is provided at an end of the fixed cover 23 remote from the spool 21.

The fixing cover 23 is fixed to one end of the valve core 21 by interference fit, and further, the fixing portion 231 is fixed to the valve core 21 by interference fit to fix the fixing cover 23 to the valve core 21.

The gasket 22 includes a sealing member 221, a stopper 222 connected to one end of the sealing member 221, and a connector 223 connecting the sealing member 221 and the stopper 222.

The gasket 22 is made of rubber material, so that better sealing performance is achieved.

The seal 221 is cylindrical and has a diameter greater than the diameter of the flow orifice 12.

The limiting piece 222 is inserted into the receiving groove 234 from the through hole 233 and abuts against the fixed cover 23 to prevent the gasket 22 from being separated from the fixed cover 23.

The length of the connecting piece 223 is equal to the length of the through hole 233 along the axial direction, preferably, the diameter of the connecting piece 223 is also equal to the diameter of the through hole 233, so as to seal the through hole 233 when the sealing gasket 22 is matched with the fixing cover 23, and prevent liquid from entering the containing groove 234.

The limiting member 222 is in a truncated cone shape, and the diameter of the end near the sealing member 221 is larger than the diameter of the end far away from the sealing member 221.

Further, the diameter of the end of the limiting member 222 near the sealing member 221 is larger than the diameter of the through hole 233, so as to prevent the limiting member 222 from being separated from the fixed cover 23, and the diameter of the end of the limiting member 222 far from the sealing member 221 is smaller than or equal to the diameter of the through hole 233, so that the limiting member 222 can be inserted into the through hole 233 and enter the accommodating groove 234.

When the gasket 22 and the fixing cover 23 need to be fixed, only one end of the limiting member 222 away from the sealing member 221 needs to be inserted into the through hole 233, and the limiting member 222 is made of rubber material and has a certain flexibility, so that the limiting member 222 can be inserted into the through hole 233 in a shrinking manner.

The fixed step 211 of the valve core 21 is close to one end of the fixed cover 23 and extends outwards in the axial direction to be provided with a limiting rod 212, the limiting piece 222 is inwards provided with a limiting groove 224, and the limiting rod 212 is inserted into the limiting groove 224 to limit the limiting piece 222 to move in the radial direction.

The length and diameter of the limiting groove 224 are equal to those of the limiting rod 212 and smaller than those of the limiting piece 222 along the axial direction. The stopper rod 212 is disposed coaxially with the spool 21.

According to the electromagnetic valve 100 and the valve core assembly 2, the limiting piece is arranged to limit the sealing gasket 22 to prevent detachment, the structure is simple and reliable, an adhesive is not needed, parts of each part are easy to process, the processing cost is low, the parts are not needed to be matched for production, the parts can be assembled after being processed, the assembly process is simple, the assembly structure is stable, the forming surface of the controllable sealing gasket 22 is free from pressure influence, the flatness is good, and the sealing effect with the runner port 12 is good.

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 utility model. 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 protection of the present utility model is to be determined by the appended claims.

Claims

1. A valve core assembly, characterized in that: the valve core assembly (2) comprises a columnar valve core (21), a sealing gasket (22) arranged at one end of the valve core (21) and a fixing cover (23) used for preventing the sealing gasket (22) from being separated from the valve core (21), the fixing cover (23) is fixed with one end of the valve core (21) in an interference fit mode, a containing groove (234) and a through hole (233) communicated with the containing groove (234) are formed in the fixing cover (23), the through hole (233) is formed in one end, far away from the valve core (21), of the fixing cover (23), the sealing gasket (22) comprises a sealing piece (221) and a limiting piece (222) connected with one end of the sealing piece (221), and the limiting piece (222) is inserted into the containing groove (234) from the through hole (233) and abuts against the fixing cover (23) to prevent the sealing gasket (22) from being separated from the fixing cover (23).

2. The valve cartridge assembly of claim 1, wherein: the sealing gasket (22) further comprises a connecting piece (223) for connecting the sealing piece (221) and the limiting piece (222), and the length of the connecting piece (223) is equal to the length of the through hole (233) along the axial direction.

3. The valve cartridge assembly of claim 2, wherein: the limiting piece (222) is in a truncated cone shape, and the diameter of one end, close to the sealing piece (221), is larger than that of one end, far away from the sealing piece (221).

4. The valve cartridge assembly of claim 1, wherein: one end of the valve core (21) close to the fixed cover (23) protrudes outwards along the axial direction and is provided with a limiting rod (212), the limiting piece (222) is inwards provided with a limiting groove (224), and the limiting rod (212) is inserted into the limiting groove (224) to limit the limiting piece (222) to move along the radial direction.

5. The valve cartridge assembly of claim 4, wherein: the length and the diameter of the limiting groove (224) are equal to those of the limiting rod (212).

6. The valve cartridge assembly of claim 4, wherein: the limiting rod (212) and the valve core (21) are coaxially arranged.

7. The valve cartridge assembly of claim 1, wherein: the fixed cover (23) comprises a fixed part (231) which is arranged around the containing groove (234) along the radial direction and a limiting part (232) which is connected with the fixed part (231), and the perforation (233) is arranged on the limiting part (232).

8. The valve cartridge assembly of claim 7, wherein: one end of the valve core (21) close to the sealing gasket (22) is inwards recessed to form a fixing step (211), and the fixing part (231) is clamped in the fixing step (211).

9. A solenoid valve, characterized in that: the electromagnetic valve (100) comprises a valve body (1) and the valve core assembly (2) as claimed in any one of claims 1-8, wherein the valve body (1) is arranged in a hollow mode to form a flow channel cavity (11), and a valve core (21) of the valve core assembly (2) is partially accommodated in the flow channel cavity (11).

10. The solenoid valve according to claim 9, wherein: the valve body (1) is also internally provided with a runner port (12) communicated with the runner cavity (11), and the sealing gasket (22) is used for sealing the runner port (12).