CN219242767U - Electromagnetic valve - Google Patents

Abstract

The utility model discloses an electromagnetic valve, which comprises a valve body and a valve core assembly, 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 sequentially 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 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; one end of the shaft facing the magnetic control assembly is provided with a containing groove, and the containing groove is arranged along the axial direction of the shaft. Impurities generated in the shaft moving process can be brought into the accommodating groove of the shaft in the shaft moving process, the phenomenon that the impurities are accumulated around the shaft to enable the shaft to move and clamp is avoided, the shaft can continuously work in the valve cavity, the stability of the shaft moving in the electromagnetic valve is kept, and long-term normal use of the electromagnetic valve is guaranteed.

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 electromagnetic controlled industrial equipment, are automatic basic elements for controlling fluids, and belong to actuators. For use in industrial control systems to adjust the direction, flow, velocity and other parameters of the medium. The solenoid valve can be matched with different circuits to realize expected control, and the control precision and flexibility can be ensured. The electromagnetic valve is electrified and powered off to enable the shaft to move back and forth in the valve cavity, so that the on-off of gas in the electromagnetic valve is controlled, but impurities generated by continuous friction between the shaft and the side wall of the valve cavity can be accumulated around the shaft and cannot be discharged in the long-term use process, so that the shaft moves and is blocked, and the normal use of the electromagnetic valve is affected.

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 bring impurities into the accommodating groove through the relative movement of the shaft in the valve cavity, and the impurities are accumulated in the shaft so that the electromagnetic valve can continuously and normally work.

According to the electromagnetic valve disclosed by the embodiment of the first aspect of the utility model, the electromagnetic valve comprises a valve body, 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 sequentially 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; one end of the shaft facing the magnetic control assembly is provided with an accommodating groove, and the accommodating groove is arranged along the axial direction of the shaft.

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, 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, in the moving process of the shaft, impurities generated by continuous friction between the shaft and the inner wall of the valve cavity can be brought into the accommodating groove of the shaft through the relative movement of the shaft and the inner wall of the valve cavity, the phenomenon that the impurities are accumulated around the shaft to enable the shaft to move and clamp is avoided, the accommodating groove for accommodating the impurities is formed in the shaft, the shaft can continuously work in the valve cavity, the stability of the movement of the shaft in the electromagnetic valve is maintained, and the long-term normal use of the electromagnetic valve is ensured.

According to some embodiments of the utility model, the end surface of the shaft, which is close to the magnetic control assembly, is provided with an inlet, the diameter of the inlet gradually decreases along the axial direction of the shaft, the inlet is communicated with the accommodating groove, and the accommodating groove is arranged at the center position of the shaft.

According to some embodiments of the utility model, the magnetic control assembly comprises a magnetic core, the magnetic core is arranged at one end, far away from the first pipeline, in the valve cavity, a protruding portion is arranged at one end, facing the shaft, of the magnetic core, and the protruding portion is matched with the introducing port.

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, 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.

According to some embodiments of the utility model, the magnetic control assembly further comprises a bobbin disposed within the valve body, the first cavity is surrounded by an inner wall of the bobbin, and a coil is wound around an outer periphery of the bobbin.

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.

According to some embodiments of the utility model, the end face of the sealing body is provided with a flange, which flange is formed by the peripheral edge of the sealing body extending in a direction away from the end face of the sealing body.

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 a cross-sectional view of an embodiment of the present utility model with a spring in a compressed state;

FIG. 3 is an assembled schematic view of a valve cartridge assembly according to an embodiment of the present 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 magnetically permeable core 210; a boss 211; a bobbin 220; a coil 230;

a valve core assembly 300; a shaft 310; a receiving groove 311; an inlet 312; a sealing body 320; a skeleton 321; a flange 322; a concave portion 323; a spring 330;

end cap 400.

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, 2 and 4, 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 connected 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 upper end of the shaft 310 is provided with a receiving groove 311. In some embodiments of the present utility model, the electromagnetic valve is used on a motorcycle, during the long-term use of the electromagnetic valve, impurities are generated by the continuous friction between the shaft 310 and the inner wall of the valve cavity 110, the impurities are accumulated around the shaft 310 and cannot be discharged, the impurities slide up and down in the valve cavity 110 through the shaft 310, the impurities are pushed into the accommodating groove 311 at the upper end of the shaft 310 to be accumulated, the influence of the accumulation of the impurities on the movement of the shaft 310 between the shaft 310 and the valve cavity 110 is prevented, the long-term normal use of the electromagnetic valve is ensured, the movement of the electromagnetic valve is stable and reliable, and the service life of the electromagnetic valve is prolonged.

In some embodiments of the present utility model, the upper end surface of the shaft 310 forms a concave conical surface, the conical surface is an introduction port 312 in transitional connection with the accommodating groove 311, the diameter of the introduction port 312 is gradually reduced along the axial direction of the shaft 310, impurities are pushed to the upper end surface of the shaft 310 in the process of sliding the shaft 310 up and down in the valve cavity 110, the impurities can be introduced into the accommodating groove 311 along the conical surface and accumulated in the accommodating groove 311, the friction force between the shaft 310 and the inner wall of the valve cavity 110 is prevented from being increased due to accumulation of the impurities around the shaft 310, and the impurities fall into the accommodating groove 311 along the side wall of the introduction port 312, so that the response speed of the electromagnetic valve can be improved, and the motion blockage of the electromagnetic valve is prevented.

Specifically, the shaft 310 is provided with a receiving groove 311 at a central position of an upper end surface, so that the shaft 310 can process the receiving groove 311, and impurities around the shaft 310 can fall into the receiving groove 311 through the introduction port 312.

Referring to fig. 1, in some embodiments of the present utility model, a magnetic core 210 is disposed at an upper end of a valve cavity 110, a conical protrusion 211 is disposed at a lower end surface of the magnetic core 210, when a driving shaft 310 of a magnetic control assembly 200 moves upward, impurities remaining on a sidewall of the introduction port 312 will fall into a receiving groove 311 through contact of the protrusion 211 of the magnetic core 210 with the introduction port 312 of the shaft 310, the protrusion 211 can further guide the impurities to enter the receiving groove 311 for accumulation, so that accumulation of impurities around the shaft 310 is reduced, movement jamming of the shaft 310 is avoided, and long-term normal use of the electromagnetic valve is ensured.

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, and the second pipeline 130 is communicated with the third cavity 113. 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. The lower end of the valve body 100 is provided with an opening communicating with the third cavity 113, the end cap 400 is used for closing the opening of the valve body 100, and the end cap 400 plays a role in sealing.

Referring to fig. 2, the first chamber 111 is formed by surrounding the inner wall of the bobbin 220, the valve body 100 further includes a coil 230 disposed at the outer circumference of the bobbin 220, and when the solenoid valve is energized, the coil 230 generates electromagnetic force, the driving shaft 310 slides upward, the solenoid valve response speed is fast, and the solenoid valve movement is stable.

Referring to fig. 3, specifically, the bobbin 220 is disposed in the valve body 100, the inner wall of the bobbin 220 forms the first cavity 111, the lower end of the bobbin 220 protrudes toward the second cavity 112, the outer wall of the bobbin 220 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 323, the lower end of the spring 330 is abutted against the concave part 323 of the seal body 320, and by 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 (8)

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 sequentially 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; one end of the shaft facing the magnetic control assembly is provided with an accommodating groove, and the accommodating groove is arranged along the axial direction of the shaft.

2. The electromagnetic valve according to claim 1, wherein an introduction port is provided in an end surface of the shaft adjacent to the magnetic control assembly, the introduction port gradually decreasing in diameter in an axial direction of the shaft, the introduction port communicating with the accommodation groove provided in a central position of the shaft.

3. The solenoid valve of claim 2 wherein said magnetic control assembly includes a magnetically permeable core disposed at an end of said valve cavity remote from said first conduit, said magnetically permeable core having a boss disposed at an end thereof facing said shaft, said boss being mated with said inlet.

4. 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, and when the magnetic control assembly drives the shaft to be close to the magnetic control assembly, the sealing body closes the gas channel through sealing the second through hole.

5. The solenoid valve of claim 4 wherein said magnetic control assembly further comprises a bobbin disposed within said valve body, said first cavity being defined by an inner wall of said bobbin, and a coil disposed around an outer periphery of said bobbin.

6. The electromagnetic valve according to claim 5, wherein one end of the bobbin protrudes out of the second cavity, and the spring is provided between an outer peripheral wall of the bobbin and a wall surface of the second cavity.

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

8. A solenoid valve according to claim 1 wherein said seal body end face is provided with a flange formed by the peripheral edge of said seal body extending in a direction away from said seal body end face.

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