CN219242768U - Electromagnetic valve - Google Patents

Abstract

The utility model discloses an electromagnetic valve, which comprises a valve body, a valve core assembly and an end cover, wherein the valve body is provided with a valve cavity and a magnetic control assembly, the valve body is provided with a first pipeline and a second pipeline, and the first pipeline, the valve cavity and the second pipeline are communicated to form a gas channel; the valve core assembly comprises a shaft, a sealing body and a spring, one end of the shaft faces the magnetic control assembly and is arranged in the valve cavity in a sliding manner, the other end of the shaft is connected with the sealing body, the magnetic control assembly is used for driving the shaft to move along the valve cavity, the sealing body is used for opening or closing the gas channel, and the spring is sleeved on the shaft so as to provide elastic force for the sealing body to open the gas channel; the valve body is equipped with the opening along the axial of axle and is close to the one end of sealing body, and the opening is equipped with the end cover, and the end of end cover towards sealing body is equipped with protruding structure or concave structure, opens the gas passage as the sealing body, sealing body and protruding structure or concave structure butt. Through set up protruding structure or concave structure at the end cover, reduce the collision area of contact of end cover and sealing body to reach the effect of noise reduction.

Description

Electromagnetic valve

Technical Field

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

Background

Solenoid valves are industrial equipment that are solenoid controlled and are the automated basic components used to control fluids. In the related art, an electromagnetic valve opens or closes a gas channel through a sealing body of a valve core, so that the electromagnetic valve is opened or closed. In the use process of the electromagnetic valve, noise can be generated when the sealing body collides with the valve body.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the electromagnetic valve which can reduce the contact area between the sealing body and the end cover and reduce the noise generated by collision between the sealing body and the end cover.

According to the electromagnetic valve of the embodiment of the first aspect of the utility model, a valve body is provided with a valve cavity and a magnetic control assembly, the valve body is provided with a first pipeline and a second pipeline, and the first pipeline, the valve cavity and the second pipeline are communicated to form a gas channel; the valve core assembly comprises a shaft, a sealing body and a shaft, one end of the shaft faces the magnetic control assembly and is arranged in the valve cavity in a sliding manner, the other end of the shaft is connected with the sealing body, the magnetic control assembly is used for driving the shaft to move along the valve cavity so as to enable the sealing body to open or close a gas channel, and the spring is sleeved on the shaft so as to provide elastic force for pushing the sealing body to open the gas channel; the valve body is provided with an opening along the axial direction of the shaft, the opening is provided with an end cover, one end of the end cover, which faces the sealing body, is provided with a protruding structure or a recessed structure, and when the sealing body opens the gas channel, the sealing body is in butt joint with the protruding structure or the recessed structure.

The electromagnetic valve provided by the embodiment of the utility model has at least the following beneficial effects: the gas enters the valve cavity through the first pipeline and is discharged from the second pipeline, and in the on-off process of the electromagnetic valve, the shaft moves back and forth in the valve cavity to drive the sealing body to open or close the gas channel, so that the on-off of the gas channel is realized. The end cover is arranged at the end part of the valve body, the sealing body moves in the valve cavity along with the shaft, and the collision contact area of the end cover and the sealing body is reduced by arranging the protruding structure or the concave structure on the end cover, so that the effect of reducing noise is achieved.

According to some embodiments of the utility model, the end cover is provided with a boss, the protruding structure or the recessed structure is arranged on the end face of the boss facing the sealing body, the end part of the shaft penetrates through the sealing body, and the center of the boss is provided with an avoidance groove corresponding to the end part of the shaft.

According to some embodiments of the utility model, the boss is provided with a plurality of recesses arranged at intervals along its circumference, the recesses being arranged extending in the axial direction of the shaft.

According to some embodiments of the utility model, the bump structure is a plurality of bumps, and the bumps are distributed at intervals on the end surface of the boss.

According to some embodiments of the utility model, the boss is integrally formed with the end cap.

According to some embodiments of the utility model, the valve cavity comprises a first cavity, a second cavity and a third cavity which are sequentially communicated, one end of the shaft is slidably arranged in the first cavity, a first through hole is formed in the side wall of the second cavity, a second through hole communicated with the third cavity is formed in the end portion of the second cavity, the first pipeline is communicated with the first through hole, the second pipeline is communicated with the third cavity, the sealing body is arranged in the third cavity, the end cover is used for sealing the third cavity, and when the magnetic control assembly drives the shaft to be close to the magnetic control assembly, the sealing body is used for closing the gas channel by sealing the second through hole.

According to some embodiments of the utility model, the magnetic control assembly further comprises a bobbin, a coil and a magnetic conducting core, wherein the bobbin is arranged in the valve body, the first cavity is formed by surrounding the inner wall of the bobbin, the coil is wound on the periphery of the bobbin, and the magnetic conducting core is arranged in the first cavity.

According to some embodiments of the utility model, one end of the bobbin extends out of the second cavity, and the spring is disposed between an outer peripheral wall of the bobbin and a wall surface of the second cavity.

According to some embodiments of the utility model, the seal comprises a skeleton, the seal being formed by processing a rubber material around the skeleton.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a cross-sectional view of a solenoid valve according to an embodiment of the utility model;

fig. 2 is an enlarged schematic view of the structure at a shown in fig. 1;

FIG. 3 is a schematic structural view of an end cap of a solenoid valve according to an embodiment of the utility model;

fig. 4 is a schematic structural diagram of a solenoid valve according to an embodiment of the utility model.

Reference numerals:

a valve body 100; a valve chamber 110; a first cavity 111; a second cavity 112; a first through hole 1121; a second through hole 1122; a third cavity 113; a first conduit 120; a second pipe 130;

a magnetic control assembly 200; a bobbin 210; a coil 220; a magnetically permeable core 230;

a valve core assembly 300; a shaft 310; a sealing body 320; a skeleton 321; a flange 322; a spring 330;

an end cap 400; a boss 410; a raised structure 411; a recess 412; avoiding groove 413.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1 and 2, the solenoid valve according to the embodiment of the utility model includes a valve body 100 and a valve core assembly 300, a first pipe 120, a valve cavity 110 and a second pipe 130 are sequentially provided in the valve body 100, the first pipe 120, the valve cavity 110 and the second pipe 130 form a gas channel, an opening of the first pipe 120 faces a left end of the solenoid valve, an opening of the second pipe 130 faces a right end of the solenoid valve, the valve core assembly 300 includes a shaft 310 and a sealing body 320, a lower end of the shaft 310 is connected with the sealing body 320, a magnetic control assembly 200 in the solenoid valve can drive the shaft 310 to slide up and down in the valve cavity 110, and when the magnetic control assembly 200 drives the shaft 310 to move up, the shaft 310 drives the sealing body 320 to close the gas channel up; when the shaft 310 moves downward, the sealing body 320 opens the gas passage downward. The lower end of the valve body 100 is provided with an opening, the end cover 400 is used for closing the opening of the valve body 100, and the upper end face of the end cover 400 is provided with a protruding structure 411. In the embodiment shown in fig. 2, the protruding structures 411 are a plurality of spherical protruding points distributed at intervals, and in the collision process of the sealing body 320 and the valve body 100, the protruding points of the end cover 400 and the lower end surface of the sealing body 320 contact each other, so that the contact area between the sealing body 320 and the end cover 400 is reduced, and the noise generated by the collision of the sealing body 320 and the end cover 400 is reduced. When the electromagnetic valve is not used for a long time, the bulge structure 411 enables a contact gap to exist between the sealing body 320 and the end cover 400, so that the phenomenon that the normal starting of the electromagnetic valve is influenced due to the adhesion of the sealing body 320 and the end cover 400 is avoided, and the response of the electromagnetic valve is sensitive.

It should be noted that, in some embodiments of the present utility model, the protrusion structure 411 provided on the end cover 400 may be a raised strip, a raised column or other structures, and the protrusion structure 411 may be capable of contacting with the sealing body 320 instead of the end surface of the end cover 400; in other embodiments of the present utility model, the end cap 400 is provided with a recessed structure, which can be embodied as a groove, a hole opened at the surface of the end cap 400, or a mesh-like surface machined on the end cap 400, by which the surface area of the end cap 400 is reduced. Both the protruding structure 411 and the recessed structure can achieve the effect of reducing the contact area between the sealing body 320 and the end cover 400, and reduce the contact noise of the solenoid valve in the use process.

Referring to fig. 3, in some embodiments of the present utility model, the lower end of the shaft 310 penetrates the sealing body 320 to connect with the sealing body 320, the end cap 400 is provided with a boss 410, the diameter size of the boss 410 matches with the diameter size of the sealing body 320, and a relief groove 413 is provided in the center of the boss 410, so that the cross section of the boss 410 is annular, on one hand, the shaft 310 is relieved from the shaft 310 during the use of the solenoid valve, so that the shaft 310 and the boss 410 cannot collide with each other, on the other hand, the contact area between the boss 410 and the sealing body 320 is further reduced, when the spring 330 releases elastic force to open the gas passage, the sealing body 320 contacts with the boss 410 to be stable in the valve cavity 110, the solenoid valve has a compact structure, and the boss 410 provided with the relief groove 413 can not only ensure stable support for the sealing body 320, but also reduce the contact area between the boss and the sealing body 320 by providing the boss 411, thereby reducing noise generated during the use of the solenoid valve, and improving the use experience of a user.

Referring to fig. 3, in some embodiments of the present utility model, four concave portions 412 are disposed on the boss 410 at intervals, the concave portions 412 extend downward from an upper end surface of the boss 410, the four concave portions 412 uniformly divide the boss 410 into four sections of bosses 410 along a circumferential direction of the boss 410, and each section of boss 410 has a plurality of protruding points on the upper end surface thereof. When the sealing body 320 opens the gas channel, the sealing body 320 contacts with the protruding points on the four-section boss 410, so that the contact area between the sealing body 320 and the end cover 400 is further reduced, when the electromagnetic valve is not used for a long time, the protruding points enable a contact gap between the sealing body 320 and the end cover 400, the sealing body 320 at the concave part 412 is not contacted with the end cover 400, the sealing body 320 and the valve body 100 are not bonded, normal starting of the electromagnetic valve is ensured, the response speed of the electromagnetic valve is improved, and the service life of the electromagnetic valve is prolonged. It will be appreciated that in some embodiments of the present utility model, the number of the concave portions 412 provided on the boss 410 may be two, three, four, etc., which is not particularly limited in this embodiment.

Specifically, the boss 410 and the end cover 400 are integrally formed, the end cover 400 is an integrally formed piece, the structure of the end cover 400 is simplified, the processing cost is saved, and the production efficiency of the end cover 400 is improved.

In some embodiments of the present utility model, the shaft 310 is sleeved with the spring 330, one end of the spring 330 is fixed in the valve cavity 110, the other end of the spring 330 abuts against the sealing body 320, when the electromagnetic valve is powered on, the magnetic control assembly 200 can drive the shaft 310 to slide upwards, the shaft 310 drives the sealing body 320 to move upwards, the spring 330 is pressed, and the sealing body 320 closes the gas channel; when the solenoid valve is de-energized, the spring 330 releases the elastic force to push the sealing body 320 to open the gas passage. The quick on-off of gas in the electromagnetic valve can be realized, and the response is sensitive.

Specifically, the valve cavity 110 includes a first cavity 111, a second cavity 112 and a third cavity 113 that are sequentially communicated from top to bottom, one end of the shaft 310 is disposed in the first cavity 111, the other end extends downward to the third cavity 113 to be connected with a sealing body 320 disposed in the third cavity 113, the diameter of the second cavity 112 is larger than that of the first cavity 111, the upper end of the spring 330 is abutted to the bottom wall of the second cavity 112, and the lower end is abutted to the upper end face of the sealing body 320. The side wall of the second cavity 112 is provided with a first through hole 1121, the first pipeline 120 is communicated with the second cavity 112 through the first through hole 1121, the end part of the second cavity 112 is provided with a second through hole 1122, the third cavity 113 is communicated with the second cavity 112 through a third through hole, the second pipeline 130 is communicated with the third cavity 113, and referring to fig. 4, the end cover 400 is used for sealing the third cavity 113 at the lower end of the valve body 100. The sealing body 320 can move in the third cavity 113, when the shaft 310 drives the sealing body 320 to move upwards, the sealing body 320 can block the second through hole 1122, so that gas cannot flow into the third cavity 113 through the second cavity 112, and the gas channel is closed. The diameter of the sealing body 320 is larger than that of the second through hole 1122, and the sealing body 320 can completely seal the second through hole 1122 from the lower end of the second cavity 112, so that the sealing effect is good.

In some embodiments of the utility model, a solenoid valve is used for motorcycle exhaust, and gas is channeled from first conduit 120 into second chamber 112. When the electromagnetic valve is electrified, the magnetic control assembly 200 drives the shaft 310 to move upwards, the shaft 310 drives the sealing body 320 to move upwards, the spring 330 is compressed, the sealing body 320 seals the second through hole 1122, gas cannot flow into the third cavity 113 from the second through hole 1122, and the gas channel is closed; when the solenoid valve is de-energized, the spring 330 releases the elastic force to push the sealing body 320 to move downward to contact the end cap 400, and the gas can flow through the third chamber 113 through the second through hole 1122, and finally be discharged from the second pipe 130, and the gas passage is opened. It will be appreciated that when the sealing body 320 opens the gas passage, gas may also be introduced into the third chamber 113 through the second conduit 130, flow into the second chamber 112 through the second through-hole 1122, and finally be exhausted through the first conduit 120.

In some embodiments of the present utility model, the first cavity 111 is formed by surrounding the inner wall of the bobbin 210, the valve body 100 further includes a coil 220 wound around the outer periphery of the bobbin 210, the upper end of the first cavity 111 is provided with a magnetic core 230, when the electromagnetic valve is energized, the coil 220 generates electromagnetic force, the driving shaft 310 slides upwards, the response speed of the electromagnetic valve is fast, and the movement of the electromagnetic valve is stable.

Specifically, the bobbin 210 is disposed in the valve body 100, the inner wall of the bobbin 210 forms a first cavity 111, the lower end of the bobbin 210 protrudes toward the second cavity 112, the outer wall of the bobbin 210 and the inner wall of the second cavity 112 form an annular groove, the upper end of the spring 330 abuts against the bottom wall of the annular groove, and the spring 330 can be defined in the annular groove. The seal body 320 is provided with a concave part, the lower end of the spring 330 is abutted against the concave part of the seal body 320, and through the arrangement, the movable range of the spring 330 is limited, the stability of the electromagnetic valve is improved, and the long-term use of the electromagnetic valve is ensured.

In some embodiments of the present utility model, the sealing body 320 is formed by processing the rubber material to cover the framework 321, where the framework 321 is an annular member, the rubber material has good corrosion resistance and good sealing effect, and the sealing body 320 made of the rubber material can seal the second through hole 1122 to avoid leakage.

In some embodiments of the present utility model, the outer periphery of the sealing body 320 extends upwards to form a flange 322, when the driving shaft 310 of the magnetic control assembly 200 moves upwards, the sealing body 320 contacts the bottom wall of the third cavity 113 by the flange 322, and further contacts the bottom wall of the third cavity 113 by the upper end surface to achieve the effect of blocking the second through hole 1122, so as to further improve the sealing effect.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims (9)

1. A solenoid valve, comprising:

the valve body is provided with a valve cavity and a magnetic control assembly, the valve body is provided with a first pipeline and a second pipeline, and the first pipeline, the valve cavity and the second pipeline are communicated to form a gas channel;

the valve core assembly comprises a shaft, a sealing body and a spring, wherein one end of the shaft faces the magnetic control assembly and is arranged in the valve cavity in a sliding manner, the other end of the shaft is connected with the sealing body, the magnetic control assembly is used for driving the shaft to move along the valve cavity so as to enable the sealing body to open or close the gas channel, and the spring is sleeved on the shaft so as to provide elastic force for pushing the sealing body to open the gas channel;

the valve body is provided with an opening along the axial direction of the shaft, the opening is provided with an end cover, one end of the end cover, which faces the sealing body, is provided with a protruding structure or a recessed structure, and when the sealing body opens the gas channel, the sealing body is in butt joint with the protruding structure or the recessed structure.

2. The electromagnetic valve according to claim 1, wherein the end cover is provided with a boss, the protruding structure or the recessed structure is arranged on an end face of the boss facing the sealing body, the end portion of the shaft penetrates through the sealing body, and an avoidance groove corresponding to the end portion of the shaft is arranged in the center of the boss.

3. The solenoid valve of claim 2 wherein said boss is provided with a plurality of recesses spaced circumferentially thereof, said recesses extending axially of the shaft.

4. The solenoid valve of claim 2 wherein said raised structure is a plurality of raised dots spaced apart on an end face of said boss.

5. A solenoid valve according to any one of claims 2 to 4 wherein said boss is integrally formed with said end cap.

6. The electromagnetic valve according to claim 1, wherein the valve cavity comprises a first cavity, a second cavity and a third cavity which are sequentially communicated, one end of the shaft is slidably arranged in the first cavity, a first through hole is formed in the side wall of the second cavity, a second through hole communicated with the third cavity is formed in the end portion of the second cavity, the first pipeline is communicated with the first through hole, the second pipeline is communicated with the third cavity, the sealing body is arranged in the third cavity, the end cover is used for sealing the third cavity, and when the magnetic control assembly drives the shaft to be close to the magnetic control assembly, the sealing body seals the second through hole to close the gas channel.

7. The solenoid valve of claim 6 wherein said magnetic control assembly further comprises a bobbin disposed within said valve body, a coil disposed around an outer periphery of said bobbin, and a magnetically permeable core disposed within said first cavity, said first cavity being defined by an inner wall of said bobbin.

8. The solenoid valve of claim 7 wherein one end of said bobbin extends out of said second cavity and said spring is disposed between an outer peripheral wall of said bobbin and a wall surface of said second cavity.

9. The solenoid valve of claim 1 wherein said seal comprises a skeleton, said seal being formed by a rubber material coating said skeleton.

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