阅读说明：本技术 一种基于永磁体磁力开合的电磁阀 (Electromagnetic valve based on permanent magnet magnetic force opens and shuts ) 是由 干江红 于 2020-06-11 设计创作，主要内容包括：本发明公开了一种基于永磁体磁力开合的电磁阀,包括电磁阀壳体,为圆柱形中空腔体,腔体一端封闭,另一端设置有进流口,侧壁上设置有出流口其内部设置有电磁铁和伸缩管机构,所述伸缩管机构设置于所述电磁阀壳体内的进流口端,包括同轴设置的波纹管、永磁磁环、环形磁轭和环形波纹簧片,所述环形波纹簧片内环面和永磁磁环配合,外环面和所述电磁阀壳体内壁配合。通过同轴设置的波纹管、永磁磁环、环形磁轭和环形波纹簧片组成伸缩管机构,同时也作为流体流道,通过电磁铁和永磁磁环之间的磁力吸引和排斥实现伸缩,实现电磁阀得开合,简化了电磁阀的移动机构。本发明的电磁阀结构简单、通径大、密封性好。(The invention discloses a magnetic valve based on magnetic force opening and closing of a permanent magnet, which comprises a solenoid valve shell which is a cylindrical hollow cavity, wherein one end of the cavity is closed, the other end of the cavity is provided with a flow inlet, the side wall of the cavity is provided with a flow outlet, an electromagnet and a telescopic pipe mechanism are arranged in the side wall of the cavity, the telescopic pipe mechanism is arranged at the flow inlet end in the solenoid valve shell and comprises a corrugated pipe, a permanent magnet ring, an annular magnet yoke and an annular corrugated reed which are coaxially arranged, the inner annular surface of the annular corrugated reed is matched with the permanent magnet ring, and the. The bellows mechanism is composed of the bellows, the permanent magnet ring, the annular magnet yoke and the annular corrugated reed which are coaxially arranged, and meanwhile, the bellows mechanism is also used as a fluid flow channel, the extension and the retraction are realized through the magnetic attraction and the repulsion between the electromagnet and the permanent magnet ring, the opening and the closing of the electromagnetic valve are realized, and the moving mechanism of the electromagnetic valve is simplified. The electromagnetic valve has the advantages of simple structure, large drift diameter and good sealing property.)

1. The electromagnetic valve is characterized by comprising an electromagnetic valve shell, an electromagnet and a telescopic pipe mechanism, wherein the telescopic pipe mechanism and the electromagnet are coaxially arranged in the electromagnetic valve shell;

the electromagnetic valve shell is a cylindrical hollow cavity, one end of the cavity is closed, the other end of the cavity is provided with a flow inlet, and the side wall of the cavity is provided with a flow outlet;

the electromagnet is arranged at the closed end in the electromagnetic valve shell and comprises a solenoid and an iron core, the iron core is a cylinder, one end of the cylinder is converged into a circular ring shape, the end surface of the cylinder is an outer drawing surface, and the solenoid is sleeved on the iron core;

the telescopic pipe mechanism is arranged at the inlet end in the electromagnetic valve shell and comprises a corrugated pipe, a permanent magnet ring, an annular magnet yoke and an annular corrugated reed which are coaxially arranged, one end of the corrugated pipe is matched with the inlet, the other end of the corrugated pipe is matched with the permanent magnet ring, the other end of the permanent magnet ring is matched with the annular magnet yoke, the free end surface of the annular magnet yoke forms an inner drawing surface, the inner annular surface of the annular corrugated reed is matched with the permanent magnet ring, and the outer annular surface of the annular corrugated reed is matched with the inner wall of the electromagnetic valve shell.

2. The electromagnetic valve based on the magnetic opening and closing of the permanent magnet according to claim 1, characterized in that the electromagnetic valve housing is made of paramagnetic material.

3. The electromagnetic valve that opens and closes based on permanent magnet magnetic force of claim 1, characterized in that, the iron core is soft magnetic material.

4. The electromagnetic valve according to claim 1, wherein the permanent magnet ring is a ring-shaped permanent magnet and is magnetized in an axial direction.

5. The electromagnetic valve capable of being opened and closed based on the magnetic force of the permanent magnet as claimed in claim 1, wherein the annular corrugated spring plate can be axially stretched and contracted to provide double-position support.

6. The electromagnetic valve based on the magnetic opening and closing of the permanent magnet according to claim 1, wherein the outlet on the side wall of the electromagnetic valve casing is arranged between the annular corrugated reed and the electromagnet.

7. The electromagnetic valve that opens and shuts based on permanent magnet magnetic force of claim 1, characterized in that, the draft angle of the outer draft surface of the end of the iron core is the same with the draft angle of the inner draft surface of the annular yoke terminal surface.

Technical Field

The invention relates to the technical field of electromagnetic valves, in particular to an electromagnetic valve which is opened and closed based on the magnetic force of a permanent magnet.

Background

The electromagnetic valve is a common device for common fluid control, not only applied to a pneumatic system, but also applied to the fields of an oil pressure system, a water pressure system, food, medicine, electronics and the like, and is a basic element for industrial automation. Solenoid valves are used in industrial controls to primarily control the on and off of fluids, as well as to adjust the direction, flow, velocity, and other fluid parameters of fluids.

The electromagnetic valve is mainly characterized in that through holes are formed in different positions of a sealer cavity, different through holes are connected with different fluid channels, a valve core and a valve rod are further arranged in the sealer cavity, the valve rod can move under the driving of an electromagnet, the valve core is further driven to move, the opening and closing of a flow channel are achieved, and namely different flow channels are opened or closed through the movement of an on-off control valve rod of the electromagnet current.

At present, the electromagnetic valve mainly maintains the opening and closing state of the electromagnet in the power-off state through the elastic force of a spring, and a flow channel and the opening and closing are realized through the movement of a valve core, so that the complexity of the structure of the electromagnetic valve is increased, and the additional sealing problem is caused.

Disclosure of Invention

The invention aims to solve the technical problem of providing a magnetic valve which is opened and closed based on the magnetic force of a permanent magnet aiming at the defects in the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the electromagnetic valve is characterized by comprising an electromagnetic valve shell, an electromagnet and a telescopic pipe mechanism, wherein the telescopic pipe mechanism and the electromagnet are coaxially arranged in the electromagnetic valve shell;

the electromagnetic valve shell is a cylindrical hollow cavity, one end of the cavity is closed, the other end of the cavity is provided with a flow inlet, and the side wall of the cavity is provided with a flow outlet;

the electromagnet is arranged at the closed end in the electromagnetic valve shell and comprises a solenoid and an iron core, the iron core is a cylinder, one end of the cylinder is converged into a circular ring shape, the end surface of the cylinder is an outer drawing surface, and the solenoid is sleeved on the iron core;

the telescopic pipe mechanism is arranged at the inlet end in the electromagnetic valve shell and comprises a corrugated pipe, a permanent magnet ring, an annular magnet yoke and an annular corrugated reed which are coaxially arranged, one end of the corrugated pipe is matched with the inlet, the other end of the corrugated pipe is matched with the permanent magnet ring, the other end of the permanent magnet ring is matched with the annular magnet yoke, the free end surface of the annular magnet yoke forms an inner drawing surface, the inner annular surface of the annular corrugated reed is matched with the permanent magnet ring, and the outer annular surface of the annular corrugated reed is matched with the inner wall of the electromagnetic valve shell.

According to the technical scheme, the electromagnetic valve shell is made of paramagnetic materials.

According to the technical scheme, the iron core is made of soft magnetic materials.

According to the technical scheme, the permanent magnet ring is an annular permanent magnet and is magnetized in the axial direction.

According to the technical scheme, the annular corrugated spring plate can stretch and retract along the axial direction, and double-position support is provided.

According to the technical scheme, the flow outlet on the side wall of the electromagnetic valve shell is arranged between the annular corrugated reed and the electromagnet.

According to the technical scheme, the die drawing angle of the outer die drawing surface of the end part of the iron core is consistent with the die drawing angle of the inner die drawing surface of the end surface of the annular magnetic yoke.

The invention has the following beneficial effects: the electromagnetic valve based on the magnetic force of the permanent magnet, provided by the invention, has the advantages that the bellows mechanism is formed by the bellows, the permanent magnet ring, the annular magnet yoke and the annular corrugated reed which are coaxially arranged, the extension and retraction are realized by the magnetic attraction and repulsion between the electromagnet and the permanent magnet ring, the bellows mechanism is also used as a fluid flow passage while extending and retracting, and the moving mechanism of the electromagnetic valve is simplified. The electromagnetic valve has the advantages of simple structure, large drift diameter and good sealing property.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a cross-sectional view of the flow passage of the solenoid valve of the present invention in an open state;

FIG. 2 is a cross-sectional view of the flow passage of the solenoid valve of the present invention in a closed state;

fig. 3 is a cross-sectional view of a core of the solenoid valve of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, the electromagnetic valve which opens and closes based on the magnetic force of the permanent magnet is provided, and comprises an electromagnetic valve housing 1, an electromagnet 3 and a telescopic pipe mechanism 2, wherein the telescopic pipe mechanism 2 and the electromagnet 3 are coaxially arranged inside the electromagnetic valve housing. The extension tube mechanism 2 can contract under the repulsion of the magnetic force between the electromagnet 3 and the extension tube mechanism, and meanwhile, the extension tube mechanism is also used as a fluid flow channel, so that the opening of the electromagnetic valve flow channel is realized. As shown in fig. 2, the telescopic tube mechanism 2 itself can be extended by the magnetic force between the electromagnet 3 and itself, and at the same time, it also serves as a fluid flow passage, thereby realizing the closing of the electromagnetic valve flow passage. The electromagnetic valve has the advantages of simple structure, large drift diameter and good sealing property.

The electromagnetic valve shell 1 is a cylindrical hollow cavity, one end of the cavity is closed, the other end of the cavity is provided with a flow inlet 11, a flow outlet 12 is formed in the side wall of the cavity, and the cross section of a flow channel between the flow inlet 11 and the flow outlet 12 is not shrunk, so that the drift diameter is large.

The electromagnet 3 is disposed at the closed end of the electromagnetic valve housing 1, and includes a solenoid 32 and a core 31, as shown in fig. 3, the core is a cylinder, one end of the cylinder is in a circular ring shape, the end surface of the cylinder is an outer drawing surface, and the solenoid 32 is sleeved on the core. The magnetization direction of the iron core 31 is related to the current direction of the solenoid 32, that is, the magnetization direction of the iron core 31 can be changed by changing the direction and magnitude of the current in the solenoid 32, so as to generate magnetic fields with different directions.

The extension tube mechanism 2 is arranged at the inlet end 11 of the electromagnetic valve shell 1 and comprises a corrugated tube 21, a permanent magnet ring 22, an annular magnet yoke 23 and an annular corrugated reed 24 which are coaxially arranged, one end of the corrugated tube 21 is matched with the inlet 11, the other end of the corrugated tube 21 is matched with the permanent magnet ring 22, the other end of the permanent magnet ring 22 is matched with the annular magnet yoke 23, the free end surface of the annular magnet yoke 23 forms an inner drawing surface, the inner annular surface of the annular corrugated reed 24 is matched with the permanent magnet ring 22, the outer annular surface is matched with the inner wall of the electromagnetic valve shell 1, the annular corrugated reed 24 provides elastic support, meanwhile, the extension tube mechanism 2 is limited to move along the. The matching among the corrugated pipe 21, the permanent magnet ring 22, the annular yoke 23 and the annular corrugated reed 24 means a fastening connection and can move as a whole.

The electromagnetic valve of the invention has the following opening and closing principles: when the magnetic field generated by the electromagnet 3 is in the same direction as the magnetic field generated by the permanent magnet ring 2 in the telescopic tube mechanism 2, the annular magnetic yoke 23 and the iron core 31 are closely attracted by magnetic attraction to close the flow passage, and at the moment, the annular corrugated reed 24 provides elastic support for the telescopic tube mechanism 2 in the extension direction to strengthen the closed state of the flow passage of the electromagnetic valve, as shown in fig. 2; when the direction of the magnetic field generated by the electromagnet 3 is opposite to the direction of the magnetic field generated by the permanent magnet ring 2 in the telescopic tube mechanism 2, the attraction force between the electromagnet 3 and the permanent magnet ring 22 is converted into a repulsive force, and meanwhile, the elastic support of the annular corrugated reed 24 is overcome, so that the annular corrugated reed 24 provides support along the contraction direction of the telescopic tube mechanism 2, and the flow passage of the electromagnetic valve is opened, as shown in fig. 1, axial fluid is dispersed along the radial direction and then flows out through the flow outlet 12. The extension tube mechanism 2 is used as a valve and a fluid flow channel, so that the structure of the electromagnetic valve is greatly simplified, the sealing is good, the cross section of the fluid flow channel is not contracted, and the drift diameter is large.

Further, the solenoid valve housing 1 is made of paramagnetic material, and provides a magnetic path for the electromagnet 3 and the permanent magnet ring and simultaneously realizes magnetic shielding.

Further, the core 31 is made of a soft magnetic material, and can change the magnetization direction according to the excitation of the solenoid 32, thereby providing magnetic forces in different directions.

Further, the permanent magnet ring 22 is a ring-shaped permanent magnet, and is magnetized in the axial direction.

Further, annular corrugated spring plate 24 is axially retractable, providing a two position support.

Further, the outlet 12 on the side wall of the solenoid valve housing 1 is provided between the annular corrugated reed 24 and the electromagnet 3.

Further, the die drawing angle of the outer die drawing surface of the end portion of the iron core 31 is consistent with the die drawing angle of the inner die drawing surface of the end surface of the annular magnetic yoke 23, and the two are matched with each other to realize effective closing of the valve.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.