CN218267250U - Electromagnetic valve - Google Patents

Abstract

The utility model provides a solenoid valve, including valve body part, case part and buffering body, the valve body part includes spacing portion, and spacing portion is made by metal material, and the buffering body is made by non-metallic material, and the buffering body part is located between spacing portion and the case part at least, case part and buffering body fixed connection or spacing connection, and the buffering body can offset with spacing portion. Compare the background art, this application can reduce the noise that produces when the solenoid valve opened the valve.

Description

Electromagnetic valve

Technical Field

The utility model relates to a fluid control technical field particularly, relates to a solenoid valve.

Background

The electromagnetic valve product is widely used. Fig. 1 is a schematic structural diagram of a solenoid valve in a closed state in the background art. As shown in fig. 1, the solenoid valve includes a valve body 01, a cover plate 02, a piston 03, a spring 04, an inlet connection pipe 05, and an outlet connection pipe 06. The valve body 01 and the cover plate 02 are made of metal materials, the valve body 01 is fixedly connected with the cover plate 02, the piston 03 is made of metal materials, the piston 03 can move relative to the valve body 01, one end of the spring 04 abuts against the cover plate 02, the other end of the spring 04 abuts against the piston 03, and the inlet connecting pipe 05 and the outlet connecting pipe 06 are respectively and fixedly connected with the valve body 01. In the solenoid valve having such a structure, when the valve is opened, the piston 03 moves toward the cover plate 02 and may collide with the cover plate 02 to generate noise.

In view of this, how to reduce the noise generated by the collision between the valve core and the end cover when the electromagnetic valve is opened is a problem to be considered by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model provides a solenoid valve, including valve body part and case part, the valve body part includes spacing portion and valve port portion, the case part can spacing portion with remove between the valve port portion, spacing portion is made by metal material, the case part can with the valve port portion offsets, the solenoid valve still includes the buffering body, the buffering body is made by non-metal material, follows the moving direction of case part, the buffering body at least part is located spacing portion with between the case part, the case part with buffering body fixed connection or spacing connection, the buffering body can with spacing portion offsets.

The solenoid valve of this embodiment includes valve body part, case part and buffering body, and valve body part includes spacing portion, and spacing portion is made by metal material, and the buffering body is made by non-metallic material, and the buffering body is located at least partly between spacing portion and the case part, case part and buffering body fixed connection or spacing connection, and the buffering body can offset with spacing portion. Compare the background art, this application can reduce the noise that produces when the solenoid valve opened the valve.

Drawings

FIG. 1: the structure schematic diagram of a solenoid valve in a valve closing state in the background art;

FIG. 2: the utility model provides a schematic structural diagram of an electromagnetic valve in a closed valve state;

FIG. 3: FIG. 2 is a schematic view of the solenoid valve in an open state;

FIG. 4: FIG. 2 is a schematic view of the structure of the valve core member;

FIG. 5: FIG. 4 is a schematic view of a buffer;

FIG. 6: the seal assembly of fig. 4 is a schematic structural view.

Symbolic illustration in fig. 2-6:

1-valve body component, 10-valve cavity of valve body component;

11-valve body, 111-valve mouth;

112-guide, 113-pilot flow path;

12-end cap, 121-limiting part;

2-spool part, 20-inner cavity of spool part;

21-valve core body, 211-step part;

2111-a step surface of the step portion, 2112-a step wall of the step portion;

212-first annular groove, 213-balance hole;

214-a second annular groove;

22-a buffer body, 221-an outer peripheral surface of the buffer body;

220-a communication channel;

23-seal, 24-seal assembly;

241-seal, 240-receiving groove;

242-an elastic member;

an A-fluid inlet and a B-fluid outlet.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. The upper and lower terms used herein are defined with respect to the positions of the components shown in fig. 2 only for clarity and convenience of the technical solution, and it should be understood that the terms used herein should not limit the scope of the claims.

Fig. 2 is a schematic structural diagram of a solenoid valve in a closed valve state according to the present invention;

FIG. 3 is a schematic structural view of the solenoid valve in FIG. 2 in an open state; FIG. 4 is a schematic structural view of the valve core member of FIG. 2; FIG. 5 is a schematic structural diagram of the buffer body in FIG. 4; fig. 6 is a schematic structural view of the sealing assembly of fig. 4.

As shown in the figure. The solenoid valve includes a valve body part 1, a spool part 2, and a damper 22. The valve core component 2 is positioned in the inner cavity 10 of the valve body component 1.

In this embodiment, the valve body member 1 includes a valve body 11 and an end cap 12, and the valve body 11 is fixedly connected to the end cap 12. The valve body 11 includes a valve port portion 111 and a guide portion 112, the valve body 11 has a fluid inlet a and a fluid outlet B, the end cover 12 is a flat plate and is made of a metal material, the end cover 12 includes a limiting portion 121, the valve core member 2 can move between the limiting portion 121 and the valve port portion 111 relative to the guide portion 112, and the valve core member 2 can abut against the limiting portion 121 or the valve port portion 111, that is, the limiting portion 121 limits the maximum moving stroke of the valve core member 2, the valve core member 2 abuts against the valve port portion 111 to achieve the closing of the solenoid valve, and the fluid inlet a is not communicated with the fluid outlet B when the solenoid valve is closed.

The valve core component 2 comprises a valve core body 21, and the valve core body 21 is made of metal materials and is cylindrical. The buffer body 22 is made of non-metal material, specifically PTFE, PEEK, rubber, or other materials. The valve core 21 is fixedly connected or connected with the buffer 22 in a limited manner, and in this embodiment, the valve core 21 and the buffer 22 are fixed by press-fitting. Along the moving direction of the valve element 2, at least a part of the buffer body 22 is located between the limiting portion 121 and the valve element 21, and when the valve element 2 reaches the maximum moving stroke, that is, when the electromagnetic valve is in the maximum valve opening state, the buffer body 22 abuts against the limiting portion 121. By providing the buffer body 22 made of a non-metallic material, noise generated by collision between the valve body member 2 and the stopper portion 121 when the solenoid valve is opened can be reduced, and the comfort of use for a customer can be improved.

As shown in fig. 3, the cushion body 22 includes a communication passage 220, the communication passage 220 can communicate the inner cavity 20 of the valve body member 2 with the fluid outlet B of the solenoid valve, and in the open state of the solenoid valve, the communication passage 220 can guide the fluid in the inner cavity 20 of the valve body member 2 to the fluid outlet B through the pilot flow path 113 of the valve body 11 to ensure that the solenoid valve is in the open state. Since the buffer body 22 is made of a non-metallic material, the communication passage 220 is easily processed.

As a specific example, as shown in fig. 2 and 5, the buffer body 22 is annular, and the buffer body 22 includes a groove, a notch of the groove faces the limiting portion 121, and the groove serves as the communication passage 220. So set up, the communicating passage 220 is simple to process.

Further, when the valve body 2 reaches the maximum moving stroke, that is, when the buffer body 22 abuts against the stopper portion 121, the distance H between the valve body 21 and the stopper portion 121 is not less than the depth D of the groove (as shown in fig. 3) in the axial direction of the valve body 21 (the moving direction of the valve body 2). That is, when the solenoid valve is at the full open position, the valve core body 21 does not block the flow of the communication passage 220, so as to ensure the flow capacity of the communication passage 220 and improve the valve opening performance of the solenoid valve.

In the present embodiment, as shown in fig. 2, 3, and 4, the spool body 21 includes a stepped portion 211 having a stepped surface facing the stopper portion 121, and the buffer body 22 is disposed on the stepped portion 211. The step surface 2111 of the step portion 211 can contact with the end surface of the buffer body 22 close to the valve port portion 111, and the step wall 2112 of the step portion 211 is tightly fitted to the outer peripheral surface of the buffer body 22, specifically, the buffer body 22 is interference fitted to the valve body 21 by press fitting. In this way, the cushion body 22 does not come off the valve body 21 during the movement of the valve body member 2, and the reliability of the valve body member 2 can be improved.

Further, the valve body member 2 further includes a seal body 23, the seal body 23 is fixed to one end of the valve body 21 close to the valve port portion 111, and the seal body 23 can abut against the valve port portion 111.

As shown in fig. 4 and 6, the valve core component 2 further includes the sealing assembly 24, and the valve core body 21 further includes a first annular groove 212, and the first annular groove 212 is closer to the valve port portion 111 than the stepped portion 211, that is, the first annular groove 212 is located on the right side of the stepped portion 211. The sealing assembly 24 is at least partially located in the first annular groove 212, the sealing assembly 24 includes a sealing element 241 and an elastic element 242, the sealing element 241 is specifically made of non-metallic materials such as PTFE and PEEK, the sealing element 241 includes a receiving groove 240 opening toward a groove bottom of the first annular groove 212, the elastic element 242 is specifically an elastic metal wire, the elastic element 242 is at least partially located in the receiving groove 240, and the elastic element 242 abuts against the sealing element 241 by using elasticity of the elastic element 242, so that the sealing element 241 abuts against the guide portion 112 of the valve body 11. With this arrangement, the seal assembly 24 increases the damping when the valve body member 2 is displaced, and reduces the moving speed of the valve body member 2 when the solenoid valve is opened, thereby reducing the noise generated when the cushion body 22 collides with the stopper portion 21. Meanwhile, the abrasion between the valve core body 21 and the guide part 112 is avoided, and the service life of the electromagnetic valve is prolonged.

As a specific example, as shown in fig. 4, the number of the first annular grooves 212 is specifically 2, and correspondingly, the number of the sealing assemblies 24 is also 2, so that the damping can be further increased, and the smoothness during the displacement process of the valve core component 2 can be improved.

Further, as shown in fig. 4 and fig. 2, the valve core body 21 further includes a balance hole 213, the balance hole 213 is closer to the valve port 111 than the first annular groove 212, that is, the balance hole 213 is located at the right side of the first annular groove 212, and when the solenoid valve is closed, the balance hole 213 communicates the inner cavity 20 of the valve core body 2 and the fluid inlet a of the solenoid valve. And the equivalent flow area of the balance hole 213 is smaller than that of the communication passage 220, so that the solenoid valve can be ensured to be reliably opened.

Further, the spool body 21 further includes a second annular groove 214, the second annular groove 214 is closer to the valve mouth portion 111 than the first annular groove 212, that is, the second annular groove 214 is located at the right side of the first annular groove 212, and the opening of the balance hole 213 is located at the bottom of the second annular groove 214. The second annular groove 214 is provided to reduce the material cost of the spool body 21 and reduce the weight, and the wall thickness of the spool body 21 at the second annular groove 214 is reduced, so that the balance hole 213 is easy to machine. On the other hand, the second annular groove 214 is beneficial to adjusting the center of gravity of the valve core component 2, so that the center of gravity of the valve core component is positioned between the 2 sealing assemblies 24, and the smoothness of the valve core component 2 in the displacement process can be further ensured.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (8)

1. An electromagnetic valve is characterized by comprising a valve body component and a valve core component, wherein the valve body component comprises a limiting part and a valve port part, the valve core component can move between the limiting part and the valve port part, the limiting part is made of a metal material, the valve core component can abut against the valve port part,

the electromagnetic valve further comprises a buffer body, the buffer body is made of non-metal materials, at least part of the buffer body is located between the limiting portion and the valve core component along the moving direction of the valve core component, the valve core component is fixedly connected or in limiting connection with the buffer body, and the buffer body can abut against the limiting portion.

2. The electromagnetic valve according to claim 1, wherein the buffer body is annular, the buffer body includes a groove, an opening of the groove faces the limiting portion, the groove serves as a communication channel, and the communication channel can communicate the inner cavity of the valve core component with the fluid outlet of the electromagnetic valve.

3. The electromagnetic valve according to claim 2, wherein the spool member includes a spool body, the spool body is fixedly connected to the buffer body, and when the buffer body abuts against the stopper, a distance between the spool body and the stopper is not less than a depth of the groove along a moving direction of the spool member.

4. The electromagnetic valve according to claim 2, wherein the spool member includes a spool body, the spool body includes a stepped portion having a stepped surface facing the limiting portion, the buffer body is disposed on the stepped portion, the stepped surface of the stepped portion contacts with an end surface of the buffer body near the valve port portion, and a stepped wall of the stepped portion is tightly fitted to an outer peripheral surface of the buffer body.

5. The solenoid valve of claim 4 wherein said spool body further comprises a first annular groove, said first annular groove being closer to said valve port portion than said step portion, said spool component further comprising a seal assembly, said seal assembly being at least partially located in said first annular groove, said seal assembly comprising a seal member and a resilient member, said seal member comprising a receiving groove opening toward a groove bottom of said first annular groove, said resilient member being at least partially located in said receiving groove, said resilient member abutting said seal member, said seal member abutting said valve body component.

6. The solenoid valve according to claim 5, wherein said spool body further comprises a balance hole, said balance hole being closer to said valve port portion than to said first annular groove, said balance hole communicating an inner cavity of said spool member with a fluid inlet of said solenoid valve when said solenoid valve is closed, an equivalent flow area of said balance hole being smaller than an equivalent flow area of said communication passage.

7. The solenoid valve as claimed in claim 6, wherein said spool body further comprises a second annular groove closer to said valve port portion than said first annular groove, said balance hole orifice being located at a groove bottom of said second annular groove.

8. The electromagnetic valve according to any one of claims 1 to 7, wherein the valve body member includes a valve body and an end cap, the valve body is fixedly connected to the end cap, the valve body includes a guide portion and the valve port portion, the valve core member is movable relative to the guide portion, the end cap has a flat plate shape, and the end cap includes the stopper portion.

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