CN217898797U

CN217898797U - Electromagnetic valve

Info

Publication number: CN217898797U
Application number: CN202222068662.5U
Authority: CN
Inventors: 田鹏; 陈永杰; 陈浙航; 金勇�
Original assignee: Zhejiang Dunan Machinery Co Ltd
Current assignee: Zhejiang Dunan Machinery Co Ltd
Priority date: 2022-08-04
Filing date: 2022-08-04
Publication date: 2022-11-25
Anticipated expiration: 2032-08-04
Also published as: WO2024027513A1

Abstract

The utility model provides a solenoid valve. The solenoid valve includes: the valve body comprises a valve body and a valve port arranged in the valve body, and an installation cavity is formed in the valve body; the valve core component is movably arranged in the mounting cavity to open or close the valve port and comprises a valve core body and a stopping part, and the stopping part is arranged on the end part of the valve core body facing the valve port; the sealing structure is sleeved on the valve core body and comprises a first sealing part and a second sealing part which are connected with each other, and the second sealing part is positioned on the outer side of the first sealing part along the radial direction of the sealing structure; the second sealing portion has a recess, and a preset distance is kept between the inner peripheral wall of the recess far away from the first sealing portion and the outer peripheral surface of the second sealing portion or the recess extends to the outer peripheral surface of the second sealing portion. The utility model provides an among the prior art solenoid valve be in the problem that easily takes place to leak in valve port department when the valve state.

Description

Electromagnetic valve

Technical Field

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

Background

At present, the assembly process of a piston in an electromagnetic valve is as follows: and a sealing ring and a check ring are sequentially arranged on the piston, then the piston is flanged to form a flanging part, the flanging part acts on the check ring firstly, and then the sealing ring is extruded to fix the sealing ring on the piston.

However, in the process of assembling the piston, the flanging part is excessively flanged, so that the extrusion force of the check ring on the sealing ring is excessively large, and when the electromagnetic valve is closed, a gap exists between the sealing ring and the valve port, so that the medium leakage phenomenon occurs, and the normal use of the electromagnetic valve is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a solenoid valve to easy problem that takes place to leak in valve port department when solving among the prior art solenoid valve and being in the closed valve state.

In order to achieve the above object, the present invention provides a solenoid valve, including: the valve body comprises a valve body and a valve port arranged in the valve body, and an installation cavity is formed in the valve body; the valve core component is movably arranged in the mounting cavity so as to open or close the valve port and comprises a valve core body and a stopping part, and the stopping part is arranged on the end part of the valve core body facing the valve port; the sealing structure is sleeved on the valve core body and comprises a first sealing part and a second sealing part which are mutually connected, and the second sealing part is positioned on the outer side of the first sealing part along the radial direction of the sealing structure; the second sealing portion is provided with a concave portion, and a preset distance is reserved between the inner peripheral wall of the concave portion far away from the first sealing portion and the outer peripheral face of the second sealing portion or the concave portion extends to the outer peripheral face of the second sealing portion.

Use the technical scheme of the utility model, when the solenoid valve is in the closed valve state, second sealing shutoff valve port. Therefore, the second sealing part is provided with the concave part, the distance between the inner peripheral wall of the concave part far away from the first sealing part and the outer peripheral surface of the second sealing part is preset or the concave part extends to the outer peripheral surface of the second sealing part, the concave part can release the extrusion force exerted on the first sealing part by the stopping part, and further the extrusion force is prevented from being transmitted to the part of the second sealing part, which is contacted with the valve body, so that the area for blocking the valve port on the sealing structure is separated from other areas, even if the first sealing part deforms, the second sealing part cannot be influenced, the problem that the leakage is easy to occur at the valve port when the electromagnetic valve is in a valve closing state in the prior art is solved, and the operation reliability of the electromagnetic valve is improved.

Further, the pressing structure is arranged between the first sealing part and the stopping part; when the electromagnetic valve is in a valve closing state, the second sealing part blocks the valve port; the compression structure avoids the concave part. On one hand, the contact area between the compression structure and the sealing structure is increased to a greater extent, and the stop effect of the compression structure is improved; on the other hand, the pressing structure is prevented from extruding the concave part to influence the overall structural strength of the sealing structure, and the service life of the sealing structure is prolonged.

Further, a preset distance is reserved between the inner peripheral wall, away from the first sealing portion, of the concave portion and the outer peripheral face of the second sealing portion, and the concave portion is a groove. The setting position of the groove is more reasonable due to the arrangement, the influence on the sealing performance of the electromagnetic valve in a valve closing state due to the contact of the valve body and the groove is avoided, and the structural strength of the sealing structure is improved. Meanwhile, the concave part is simpler in structure and easy to process and realize due to the arrangement, and the processing cost of the sealing structure is reduced.

Furthermore, the sealing structure is provided with a through hole, and the valve core body is arranged on the through hole in a penetrating way; the groove is an annular groove, and the annular groove and the through hole are coaxially arranged. The concave part is an annular groove, so that the sealing structure can sufficiently separate the valve port blocking area from the pressing structure in the rest area, and the influence on the second sealing part when the first sealing part deforms can be further prevented. Meanwhile, the arrangement makes the processing of the concave part easier and simpler, and reduces the processing cost of the sealing structure.

Furthermore, the sealing structure is provided with a through hole, and the valve core body is arranged on the through hole in a penetrating way; the recess includes the arc groove section that sets up along the circumference interval of through-hole, and each arc groove section all sets up with the through-hole is equal coaxial. The shape of the groove is selected more flexibly by the arrangement, so that different use requirements and working conditions are met, and the processing flexibility of workers is improved.

Furthermore, the number of the grooves is one; or, the grooves are multiple and are arranged at intervals along the radial direction of the sealing structure. The number of the grooves is more flexibly selected by the arrangement, so that different use requirements and working conditions are met, and the processing flexibility of workers is also improved.

Further, the cross section of the groove is polygonal, U-shaped, V-shaped or semicircular. The shape of the cross section of the groove is selected more flexibly by the arrangement, so that different use requirements and working conditions are met, and the processing flexibility of workers is improved.

Further, the concave portion extends to the outer peripheral surface of the second sealing portion away from the inner peripheral wall of the first sealing portion, a step surface is formed at the joint of the first sealing portion and the second sealing portion, and the step surface is located in the valve port when the electromagnetic valve is in a valve closing state. Because the second sealing part is provided with the concave part, the concave part is far away from the inner peripheral wall of the first sealing part and extends to the outer peripheral surface of the second sealing part, the concave part can release the extrusion force exerted on the first sealing part by the stopping part, and further the extrusion force is prevented from being transmitted to the part, which is contacted with the convex part, of the second sealing part, so that the area for sealing the valve port on the sealing structure is separated from the rest area, even if the first sealing part is deformed, the second sealing part cannot be influenced, and further the problem that the leakage is easy to occur at the valve port when the electromagnetic valve is in a valve closing state in the prior art is solved, and the operation reliability of the electromagnetic valve is improved.

Further, the second sealing portion has an annular groove, which communicates with the recess; the annular groove is located on the outer side of the step surface along the radial direction of the sealing structure. The annular groove and the concave part act together to release the extrusion force, and leakage on the sealing structure is further prevented.

Further, when the electromagnetic valve is in a valve closing state, the bottom surface of the concave part is contacted with the valve body; the bottom surface is perpendicular to the central axis of the sealing structure. The surface of the first sealing part far away from the valve core body and the bottom surface of the concave part are arranged in parallel, so that the sealing structure is easier and simpler to process, and the processing difficulty is reduced.

Drawings

The accompanying drawings, which form a part of the present application, 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 invention and not to limit the invention. In the drawings:

fig. 1 shows a cross-sectional view of an embodiment one of a solenoid valve according to the present invention;

FIG. 2 shows an enlarged schematic view at A of the solenoid valve of FIG. 1;

FIG. 3 shows a side view of a sealing structure of the solenoid valve of FIG. 1;

FIG. 4 shows a cross-sectional view of the seal structure of FIG. 3;

fig. 5 shows a partial enlarged view of a second embodiment of the solenoid valve according to the invention;

FIG. 6 shows a side view of a sealing structure of the solenoid valve of FIG. 5;

figure 7 shows a cross-sectional view of the seal structure of figure 6.

Wherein the figures include the following reference numerals:

10. a valve body; 11. a valve body; 111. a liquid inlet; 112. a liquid outlet; 12. a convex portion; 20. a valve core component; 21. a valve core body; 22. a stopper portion; 30. a sealing structure; 31. a first seal portion; 32. a second sealing part; 321. a recess; 33. a through hole; 34. a step surface; 40. a compression structure; 50. a stationary iron core; 60. a movable iron core; 70. a first spring; 80. a second spring; 90. a cover plate; 100. a conduit.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is to be noted that, unless otherwise indicated, 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 application belongs.

In the present invention, unless otherwise specified, the use of directional words such as "upper and lower" is generally in reference to the orientation shown in the drawings, or to the vertical, perpendicular or gravitational orientation; likewise, for ease of understanding and description, "left and right" are generally to the left and right as shown in the drawings; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself, but the above directional terms are not intended to limit the present invention.

In order to solve among the prior art problem that easily takes place to leak in valve port department when the solenoid valve is in the closed valve state, this application provides a solenoid valve.

As shown in fig. 1 to 7, the solenoid valve includes a valve body 10, a spool member 20, a seal structure 30, and a hold-down structure 40. The valve body 10 includes a valve body 11 and a valve port disposed in the valve body 11, the valve body 11 has a mounting cavity, a liquid inlet 111 and a liquid outlet 112, and the liquid inlet 111 and the liquid outlet 112 are both communicated with the mounting cavity. The valve core component 20 is movably disposed in the mounting cavity to open or close the valve port, and the valve core component 20 includes a valve core body 21 and a stopper 22, and the stopper 22 is disposed on an end of the valve core body 21 facing the valve port. The sealing structure 30 is sleeved on the valve core body 21, the sealing structure 30 comprises a first sealing portion 31 and a second sealing portion 32 which are connected with each other, and the second sealing portion 32 is located on the outer side of the first sealing portion 31 along the radial direction of the sealing structure 30. The second sealing portion 32 has a recess 321, and the recess 321 has a predetermined distance from the inner peripheral wall of the first sealing portion 31 to the outer peripheral surface of the second sealing portion 32 or extends to the outer peripheral surface of the second sealing portion 32.

By applying the above technical scheme, when the electromagnetic valve is in a valve closing state, the second sealing portion 32 blocks the valve port. In this way, since the second sealing portion 32 has the concave portion 321, and a preset distance is provided between the inner peripheral wall of the concave portion 321, which is far away from the first sealing portion 31, and the outer peripheral surface of the second sealing portion 32, or the concave portion 321 extends to the outer peripheral surface of the second sealing portion 32, the concave portion 321 can release the extrusion force applied to the stopper portion 22 on the first sealing portion 31, so as to avoid the extrusion force from being transmitted to the portion of the second sealing portion 32, which is in contact with the valve body 11, so as to separate the area for blocking the valve port on the sealing structure 30 from the rest area, and even if the first sealing portion 31 deforms, the second sealing portion 32 is not affected, thereby solving the problem that the leakage is likely to occur at the valve port when the solenoid valve is in the valve closing state due to the overlarge extrusion force in the prior art, and improving the operation reliability of the solenoid valve.

In this embodiment, the valve body 10 includes a protrusion 12 disposed on the valve body 11, and the protrusion 12 is disposed toward the mounting cavity to form a valve port, which communicates the liquid inlet 111 and the liquid outlet 112. Specifically, the second sealing portion 32 contacts the protrusion 12 of the valve body 10 to close the valve port. In this way, the concave portion 321 can release the pressing force applied to the first sealing portion 31 by the stopper portion 22, and further avoid the pressing force from being transmitted to the portion of the second sealing portion 32 contacting with the convex portion 12, so as to separate the convex portion contact region (valve port blocking region) on the sealing structure 30 from the rest region, and even if the first sealing portion 31 is deformed, the second sealing portion 32 will not be affected, and further prevent the leakage at the valve port when the electromagnetic valve is in the valve-closed state, thereby improving the operational reliability of the electromagnetic valve.

Specifically, when the second seal portion 32 is in contact with the projection 12, the valve port is closed, and the valve is closed.

Specifically, the pressing structure 40 is disposed between the first sealing portion 31 and the stopper portion 22; when the electromagnetic valve is in a closed state, the convex portion 12 contacts the second seal portion 32. The hold-down structure 40 is disposed clear of the recess 321. In this way, the pressing structure 40 is pressed on the first sealing part 31, and the arrangement greatly increases the contact area between the pressing structure 40 and the sealing structure 30 on one hand, and improves the stopping effect of the pressing structure 40; on the other hand, the pressing structure 40 is prevented from pressing the concave portion 321 to influence the overall structural strength of the sealing structure 30, and the service life of the sealing structure 30 is prolonged.

Example one

As shown in fig. 1 to 4, in the present embodiment, a preset distance is provided between the inner circumferential wall of the concave portion 321 away from the first sealing portion 31 and the outer circumferential surface of the second sealing portion 32, and the concave portion 321 is a groove which is located between the convex portion 12 and the pressing structure 40 when the electromagnetic valve is in the valve-closed state. Thus, the arrangement position of the groove is more reasonable, the contact between the convex part 12 and the groove is avoided, the influence on the sealing performance of the electromagnetic valve in a valve closing state is avoided, and the structural strength of the sealing structure 30 is also improved. Meanwhile, the arrangement makes the structure of the concave part 321 simpler, and the processing and implementation are easy, thereby reducing the processing cost of the sealing structure 30.

In the present embodiment, the seal structure 30 has a through hole 33, and the valve body 21 is disposed on the through hole 33. The groove is an annular groove which is arranged coaxially with the through hole 33. Thus, the recess 321 is an annular groove, and the seal structure 30 sufficiently separates the valve port blocking region from the remaining region, thereby further preventing the second seal portion 32 from being affected when the first seal portion 31 is deformed. Meanwhile, the arrangement makes the processing of the concave part 321 easier and simpler, and reduces the processing cost of the sealing structure 30.

It should be noted that, the structure of the groove is not limited to this, and can be adjusted according to the working condition and the use requirement.

In other embodiments not shown in the drawings, the seal structure 30 has a through hole 33, and the cartridge body 21 is pierced in the through hole 33; the recess includes the arc groove section that sets up along the circumference interval of through-hole 33, and each arc groove section all sets up with through-hole 33 is coaxial. Like this, above-mentioned setting makes the shape of recess select more in a flexible way to satisfy different user demand and operating mode, also promoted staff's processing flexibility.

Optionally, there is one groove; alternatively, the number of grooves is plural, and the plural grooves are provided at intervals in the radial direction of the seal structure 30. Like this, above-mentioned setting makes the number of recess select more in a flexible way to satisfy different user demand and operating mode, also promoted staff's processing flexibility.

In this embodiment, the number of the grooves is one, so that the structure of the sealing structure 30 is simpler, the sealing structure is easy to process and implement, and the processing cost of the solenoid valve is reduced.

Optionally, the cross-section of the groove is polygonal, or U-shaped, or V-shaped, or semicircular. Like this, above-mentioned setting makes the shape of the cross section of recess select more in a flexible way to satisfy different user demand and operating mode, also promoted staff's processing flexibility.

In this embodiment, the cross section of the groove is rectangular, so that the structure of the sealing structure 30 is simpler, the sealing structure is easy to process and implement, and the processing cost of the electromagnetic valve is reduced.

As shown in fig. 1, the solenoid valve further includes a stationary core 50, a movable core 60, a first spring 70, a second spring 80, a cover plate 90, and a guide pipe 100. The valve core component 20 is in contact with the second spring 80, the second spring 80 is used for applying an elastic force to the valve core component 20, and the cover plate 90 is fixedly arranged on the valve body 11 and blocks the installation cavity so as to block the second spring 80. The guide pipe 100 is connected to the valve body 10, and the stationary core 50, the movable core 60, and the first spring 70 are all disposed in the guide pipe 100.

Example two

The electromagnetic valve in the second embodiment is different from the first embodiment in that: the recess 321 differs in position away from the inner peripheral wall of the first seal portion 31.

As shown in fig. 5 to 7, the concave portion 321 extends away from the inner peripheral wall of the first sealing portion 31 to the outer peripheral surface of the second sealing portion 32, a stepped surface 34 is formed at the junction of the first sealing portion 31 and the second sealing portion 32, and the stepped surface 34 is located in the valve port when the electromagnetic valve is in the valve-closed state. When the electromagnetic valve is in a closed state, the stepped surface 34 is positioned between the convex portion 12 and the hold-down structure 40.

Specifically, the pressing structure 40 is pressed against the first sealing portion 31, and when the electromagnetic valve is in a valve-closed state, the second sealing portion 32 contacts the convex portion 12 of the valve body 10 to close the liquid inlet 111. In this way, since the second sealing portion 32 has the concave portion 321, and the concave portion 321 extends to the outer peripheral surface of the second sealing portion 32 away from the inner peripheral wall of the first sealing portion 31, the concave portion 321 can release the pressing force applied on the first sealing portion 31 by the pressing structure 40, and further avoid the transmission of the pressing force to the portion of the second sealing portion 32, which is in contact with the convex portion 12, so as to separate the blocked valve port area on the sealing structure 30 from the rest area, and the second sealing portion 32 is not affected even if the first sealing portion 31 is deformed, thereby solving the problem that leakage is easy to occur at the valve port when the electromagnetic valve is in the closed state in the prior art, and improving the operational reliability of the electromagnetic valve.

In the present embodiment, in the axial direction of the seal structure 30, the surface of the first seal portion 31 away from the poppet body 21 protrudes beyond the surface of the second seal portion 32 away from the poppet body 21, thereby further preventing leakage caused by the protrusion contact region and the valve port being away from one another due to excessive pressing force. The portion of the first seal portion 31 near the through hole 33 is provided as a compression structure compression region, and the compression structure compression region is provided away from the valve port with respect to the protrusion contact region.

Optionally, the second sealing portion 32 has an annular groove, which communicates with the recess 321. The annular groove is located outside the step surface 34 in the radial direction of the seal structure 30. In this way, the annular groove and the recess 321 cooperate to release the pressing force, further preventing leakage at the protrusion contact area.

In the present embodiment, when the electromagnetic valve is in the valve-closed state, the bottom surface of the recess 321 is in contact with the valve body. The bottom surface is disposed perpendicular to the central axis of the seal structure 30. In this way, the surface of the first sealing portion 31 away from the valve body 21 and the bottom surface of the recess 321 are arranged in parallel to each other, so that the sealing structure 30 is easier and simpler to process, and the processing difficulty is reduced. When the solenoid valve is in a closed state, the bottom surface of the recess 321 contacts the projection 12.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

when the electromagnetic valve is in a valve closing state, the second sealing part blocks the valve port. Therefore, the second sealing part is provided with the concave part, a preset distance is arranged between the inner peripheral wall of the concave part, which is far away from the first sealing part, and the outer peripheral surface of the second sealing part, or the concave part extends to the outer peripheral surface of the second sealing part, the concave part can release the extrusion force exerted on the first sealing part by the stopping part, and further the extrusion force is prevented from being transmitted to the part, which is in contact with the valve body, of the second sealing part, so that the area of the blocked valve port on the sealing structure is separated from the rest areas, the second sealing part cannot be influenced even if the first sealing part is deformed, the problem that leakage is easy to occur at the valve port when the electromagnetic valve is in a valve closing state in the prior art is solved, and the operation reliability of the electromagnetic valve is improved.

It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A solenoid valve, comprising:

the valve body (10) comprises a valve body (11) and a valve port arranged in the valve body (11), and an installation cavity is formed in the valve body (11);

a spool component (20), wherein the spool component (20) is movably arranged in the mounting cavity to open or close the valve port, the spool component (20) comprises a spool body (21) and a stopper (22), and the stopper (22) is arranged on the end of the spool body (21) facing the valve port;

the sealing structure (30) is sleeved on the valve core body (21), the sealing structure (30) comprises a first sealing part (31) and a second sealing part (32) which are connected with each other, and the second sealing part (32) is positioned on the outer side of the first sealing part (31) along the radial direction of the sealing structure (30);

wherein the second sealing part (32) is provided with a concave part (321), and the concave part (321) is far away from the inner peripheral wall of the first sealing part (31) and the outer peripheral surface of the second sealing part (32) to form a preset distance or extend to the outer peripheral surface of the second sealing part (32).

2. The solenoid valve of claim 1, further comprising:

a pressing structure (40) arranged between the first sealing part (31) and the stopping part (22); when the electromagnetic valve is in a valve closing state, the second sealing part (32) blocks the valve port; the pressing structure (40) is arranged to be away from the concave portion (321).

3. The electromagnetic valve according to claim 2, characterized in that the recess (321) has a predetermined distance between the inner peripheral wall of the recess (321) remote from the first seal (31) and the outer peripheral surface of the second seal (32), the recess (321) being a groove.

4. The electromagnetic valve according to claim 3, characterized in that the sealing structure (30) has a through hole (33), the spool body (21) being pierced on the through hole (33); the groove is an annular groove, and the annular groove and the through hole (33) are coaxially arranged.

5. The electromagnetic valve according to claim 3, characterized in that the sealing structure (30) has a through hole (33), the spool body (21) being pierced on the through hole (33); the groove comprises arc-shaped groove sections which are arranged along the circumferential direction of the through hole (33) at intervals, and the arc-shaped groove sections and the through hole (33) are coaxially arranged.

6. The solenoid valve of claim 3 wherein said recess is one; or, the number of the grooves is multiple, and the grooves are arranged at intervals along the radial direction of the sealing structure (30).

7. The electromagnetic valve according to claim 3, characterized in that the cross section of the groove is polygonal, or U-shaped, or V-shaped, or semicircular.

8. The electromagnetic valve according to claim 2, wherein the recess (321) extends away from an inner peripheral wall of the first seal portion (31) to an outer peripheral surface of the second seal portion (32), a connection of the first seal portion (31) and the second seal portion (32) forms a step surface (34), and the step surface (34) is located in the valve port when the electromagnetic valve is in the valve-closed state.

9. The electromagnetic valve according to claim 8, characterized in that the second sealing portion (32) has an annular groove communicating with the recess (321); the annular groove is located outside the step surface (34) in the radial direction of the seal structure (30).

10. The electromagnetic valve according to claim 8, characterized in that a bottom surface of the recess (321) is in contact with the valve body (11) when the electromagnetic valve is in the valve-closed state; the bottom surface and the central axis of the sealing structure (30) are arranged perpendicular to each other.