CN219549740U - Electromagnetic valve anti-corrosion structure - Google Patents

Abstract

The utility model discloses an anti-corrosion structure of an electromagnetic valve, which comprises a valve main body and a permanent magnet, wherein a channel for corrosive gas or liquid or other corrosive media to circulate is arranged in the valve main body, and a leather membrane is arranged in the channel to separate a valve core and the permanent magnet into two spaces which are not communicated with each other. The permanent magnet is arranged below the channel, the valve core is hollow, the lower end of the valve core is sleeved with the magnet seat, the middle part of the lower end of the magnet seat is fixedly connected with the permanent magnet, and the periphery of the side edge of the lower end of the magnet seat is provided with the pressure stabilizing piece.

Description

Electromagnetic valve anti-corrosion structure

Technical Field

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

Background

Electromagnetic valves are widely used in industrial production, particularly in chemical devices. The valve can be used for switching control (two-way) of water, air, neutral gas and other gases and liquids which are suitable for the materials of electromagnetic valves, and can also be used as an indispensable part (three-way, four-way and five-way) in a safety interlocking protection system. When the electromagnetic valve is applied to gas, liquid or other fluid which has corrosiveness to the magnet, the protection of the electromagnetic valve against corrosion is particularly important, while the corrosion-resistant electromagnetic valve is generally applied in a corrosion scene and rarely applied in a common use scene, so the universality is poor,

the publication is 2022 and 04 month 19, chinese patent document with publication number CN202122525671.8 discloses an isolated anti-corrosion electromagnetic valve, which comprises a control base, the bottom intercommunication of control base has the connecting pipe, the bottom bolt of connecting pipe has the solenoid valve main part, the both sides intercommunication of solenoid valve main part has the installation tube, the inside sliding connection of installation tube has fixed cover, the inside threaded connection of fixed cover has the conveyer pipe, the ring channel has still been seted up on the surface of fixed cover, be provided with elastic fixed structure between ring channel and the installation tube, the right side intercommunication of control base has the connecting wire, the right side bolt of control base has last seal cover and lower seal cover, the semicircle groove has all been seted up to the inside of going up seal cover and lower seal cover, go up seal cover and lower seal cover cooperation use, the inside of solenoid valve main part includes stainless steel layer and corrosion-resistant layer. The structure mainly describes the sealing of the valve body, and the corrosion-resistant structure mainly refers to the corrosion-resistant layer, and no corrosion-resistant thought is provided from the structure.

Disclosure of Invention

The utility model aims to solve the problem that the electromagnetic valve in the prior art is not strong in universality in corrosion scenes and common scenes, and the universality of the electromagnetic valve is increased in an anti-corrosion angle, and provides an anti-corrosion structure of the electromagnetic valve, which not only can effectively avoid the failure caused by corrosion of a permanent magnet, but also structurally solves the problem that the electromagnetic valve is not corrosion-resistant, so that the electromagnetic valve can be used in any scene and has the characteristics of corrosion resistance and strong universality.

The utility model adopts the technical scheme for solving the technical problems, and comprises a valve main body and a permanent magnet, wherein a channel is arranged in the valve main body. Preferably, a channel for corrosive gas or liquid or other corrosive media to circulate is arranged in the valve main body, the permanent magnet is arranged below the channel, the valve core main body is arranged in the channel, but the lower end part of the valve core main body is arranged below the channel, the lower end part of the valve core is sleeved with the magnet seat, the lower end of the magnet seat is fixedly connected with the permanent magnet, the permanent magnet is arranged below the channel and cannot be contacted with the corrosive media, so that the valve cannot be corroded, and the structure can also well act in other common scenes.

The end part of the valve core is provided with a magnet seat, the tail end of the magnet seat is provided with a hollow installation clamping table, and the magnet seat clamps the permanent magnet. Preferably, the lower end of the magnet seat is provided with a clamping table, a groove is arranged in the middle of the clamping table, a notch of the groove faces downwards, the inner contour of the groove in the middle of the clamping table is identical to the axial outer contour of the permanent magnet, the clamping table arranged on the magnet seat is provided with clamping legs with barbs at the tail ends, the clamping legs are tough and elastic, when the permanent magnet is put in, the clamping legs incline slightly outwards, after the permanent magnet is put in, the clamping legs return to an initial state, the inner wall of the groove of the clamping table is rough, the permanent magnet can be firmly clamped in the groove of the clamping table, and the contact surface of the clamping table and the permanent magnet can be fixed with glue in an auxiliary manner.

And a pressure stabilizing piece is arranged at the tail end of the magnet seat. Preferably, the side edge of the tail end of the magnet seat is provided with a base, the base is arranged at the side edge of the lower end of the magnet seat, the shape of the base is a groove with a slightly larger opening, one end of the pressure stabilizing piece is abutted on the base, the other end of the pressure stabilizing piece is fixedly connected on the side wall of the inner space of the valve main body,

and a leather film is arranged at the contact position of the magnet seat and the valve core, and separates the valve core and the magnet seat in two independent spaces. Preferably, a coating is provided at a contact position between the upper end of the magnet seat and the lower end of the valve core. The coating separates the valve core and the magnet seat in two independent spaces, the magnet seat is arranged at the lower side of the coating, the valve core is arranged at the upper side of the coating, and the coating blocks the circulating corrosive medium at the upper side of the coating, so that the permanent magnets below the magnet seat and the magnet seat are protected.

The valve core is provided with a bulge, an axial through hole is formed in the middle of the magnet seat, a concave table which is sunken towards the outer side of the magnet seat is formed in the upper end portion of the through hole, an expansion body is arranged at the end portion of the leather membrane, and the expansion body is connected with the magnet seat in a clamping mode. Preferably, the lower end of the valve core is provided with a bulge, a through hole matched with the bulge at the lower end of the valve core is formed in the middle of the magnet seat, a concave table recessed towards the outer side of the magnet seat is formed in the upper end of the through hole, a coating is arranged at the contact position of the magnet seat and the valve core, expansion bodies are arranged at two ends of the coating, the thickness of the expansion bodies is far greater than that of the coating, the expansion bodies of the inner ring of the coating are matched with the concave table, the expansion bodies of the outer ring are connected with the inner space of the valve body, the coating separates the valve core and the magnet seat in two independent spaces, and therefore, gas in the electromagnetic valve cannot contact the magnet seat and a permanent magnet at the lower end of the magnet seat, and the electromagnetic valve permanent magnet is protected.

The diaphragm divides the internal channel of the valve body into a ventilation space and a sealing space, the space where the valve core is located is the ventilation space, and the space where the magnet seat is located is the sealing space. Preferably, the space that can ventilate above the involucra is ventilation space, and the space that can't ventilate of involucra lower extreme is sealed space, the case is in ventilation space, the magnet seat is in sealed space, and the involucra has fine pliability, can alleviate the inside pressure of ventilation space well, mainly plays fine cushioning effect, lets the solenoid valve operation stable, but also plays sealed effect in the protection sealed space leakproofness.

And a spring card is arranged at the contact part of the valve core and the magnet seat, and the spring card is tightly attached to the end part of the valve core. Preferably, the valve core and the lower end part of the through hole of the magnet seat are provided with spring cards, the spring cards are sleeved in the space at the tail end of the through hole of the magnet seat, the spring cards are annular, the part close to the inner ring is divided into four uniform flaps and is inclined downwards, the inner side end surface of the inner ring is tightly attached to the lower end of the valve core and forms a triangular support structure with the inner wall of the magnet seat and the surface of the lower end of the valve core, the spring cards play a role in stabilizing the connection of the valve core and the magnet seat, and then the matching connection relationship between the leather film and the valve core and the magnet seat is tighter, and the sealing performance is better.

The valve core is internally provided with a cylindrical cavity. Preferably, the cylindrical cavity is arranged in the valve core, so that the weight of the valve core is reduced, the electromagnetic valve has a better control function on the circulation of air in the valve core, namely, the electromagnetic valve can be opened and closed better and more quickly.

An electromagnetic switch mechanism is arranged outside the valve main body, and the electromagnetic switch mechanism is correspondingly arranged with the permanent magnet. Preferably, an electromagnetic switch mechanism is arranged outside the valve main body, is arranged at the right lower end of the permanent magnet, and is screwed on the valve main body shell.

Therefore, the utility model solves the defect of weak universality of the electromagnetic valve in the corrosion scene and the common scene in the prior art, increases the universality of the electromagnetic valve in the corrosion prevention angle, can effectively avoid the failure caused by the corrosion of the permanent magnet, and structurally solves the problem that the electromagnetic valve is not corrosion-resistant, so that the electromagnetic valve can be used in any scene and has the advantages of corrosion prevention and strong universality.

Description of the drawings:

figure 1 is a cross-sectional view of the valve body of the present utility model,

figure 2 is a cross-sectional view of the present utility model,

figure 3 is a block diagram of a spring card according to the utility model,

figure 4 is an external view of the magnet base of the present utility model,

fig. 5 is an external view of the valve body of the present utility model.

In the figure: 1. valve body, 2, permanent magnet, 3, the case, 5, magnet seat, 7, the block, 8, steady voltage piece, 9, the involucra, 11, ventilation space, 12, sealed space, 13, spring card, 15, electromagnetic switch mechanism, 16, through-hole, 17, concave station, 18, extension body.

Detailed Description

The following describes a specific embodiment of the technical scheme of the present utility model by way of examples and with reference to the accompanying drawings.

Examples

In the embodiment shown in fig. 1, fig. 2, fig. 3 and fig. 5, an anti-corrosion structure of an electromagnetic valve is provided, which comprises a valve main body 1 and a permanent magnet 2, wherein the interior of the valve main body 1 is provided with alternating channels, which are respectively a transverse air outlet channel and a longitudinal air inlet channel, corrosive media enter the interior of the valve main body 1 from the air inlet channel, flow out of the interior of the valve main body 1 from the air outlet channel, the air outlet channel is provided with an electromagnetic valve control structure, which is respectively a valve core 3 in the air outlet channel, the lower end surface of the valve core 3 is provided with a magnet seat 5, the lower end of the valve core 3 is provided with a bulge, the magnet seat 5 is provided with a through hole 16 in the axial direction, the bulge is just inserted into the through hole 16, so as to be used for connecting the valve core 3 and the magnet seat 5, the contact position of the lower end surface of the valve core 3 and the upper end surface of the magnet seat 5 is provided with a coating 9, the inner ring is connected with the contact position of the valve core 3 and the magnet seat 5, the outer ring is connected with the inner space of the valve main body 1, and the outer ring is separated into a ventilation space 11 and a sealing space 12 which are not communicated with each other, and the technical scheme is as follows: the end of the coating 9 is provided with an expansion body 18, that is, the inner side of the inner ring and the outer side of the coating 9 are provided with expansion bodies 18, the expansion bodies 18 and the coating 9 are integrated, the expansion body 18 is thicker than the coating 9 by about 4 times of the thickness of the coating, correspondingly, the upper end of a through hole 16 provided in the magnet seat 5 is provided with an expansion concave table 17, the volume of the concave table 17 is slightly smaller than that of the expansion bodies 18, the expansion bodies 18 on the inner side of the inner ring of the coating 9 are firstly arranged in the concave table 17, and the bulge at the lower end of the valve core 3 is inserted into the through hole 16 provided in the magnet seat 5, so that overflow fit is formed between the inner ring of the coating 9, the magnet seat 5 and the valve core 3 due to good elasticity of the coating 9. The sealing effect is good, the outer side of the outer ring of the diaphragm 9 is connected with the inner space of the valve main body 1, thus, the ventilation space 11 and the sealing space 12 are completely separated by the diaphragm 9 to form two independent spaces which are not communicated with each other, the technical scheme has remarkable effect, and because of the elasticity of the diaphragm 9, when the air pressure in the ventilation space 11 is increased, the diaphragm 9 deforms, so as to buffer the pressure in the ventilation space 11, simultaneously, the valve core 3 can conveniently move up and down in the air outlet channel, in addition, the bottom of the through hole 16 arranged on the magnet seat 5 is provided with the spring card 13, the spring card 13 is sheathed in the space at the tail end of the through hole of the magnet seat, the spring card 13 is in a circular ring shape, the part close to the inner ring is divided into four uniform flaps, and is inclined downwards, the end surface of the spring card 13 is tightly attached to the lower end surface of the valve core 3, and forms a triangular supporting structure with the inner wall of the magnet seat 5 and the lower end surface of the valve core 3, when the lower end bulge of the valve core 3 is inserted into the through hole 16 arranged on the magnet seat 5, and simultaneously, the spring card 13 is inclined downwards, so that the valve core 3 can conveniently move up and down, simultaneously, the lower end of the card 3 is provided with the four spring cards 13 as a circular ring-shaped groove, the four side of the spring card 13 is arranged at the bottom of the inner side of the valve seat 7, the groove 7 is provided with a circular groove 7, the groove is formed in the groove 7 is opposite to the side, the groove 7 is fixedly opposite to the side, the bottom of the valve core 7, the side 7, the bottom 7 is provided with the bottom 7, and the bottom is provided with the bottom of the valve seat 7, and the valve seat, and the bottom is fixed with the bottom, and the valve seat is fixed with the bottom and the valve seat 3, the permanent magnet 2 is cylindrical and is completely the same as the inner contour of the groove in the middle of the clamping table 7, that is, the permanent magnet 2 is just installed on the inner contour of the groove in the middle of the clamping table 7 and is further fixed by the clamping legs and barbs arranged at the lower ends of the clamping legs, the periphery of the clamping legs arranged on the clamping table 7 is provided with a circular groove, the upper ends of the pressure stabilizing pieces 8 are propped against the inside of the groove, the lower ends of the pressure stabilizing pieces 8 are connected with the inner space of the valve main body 1, the pressure stabilizing pieces 8 are round table springs, the diameter of the upper ends of the pressure stabilizing pieces 8 is smaller than the diameter of the lower ends of the pressure stabilizing pieces, the permanent magnet 2 and the electromagnetic switch mechanism 15 are attracted and in an initial state, that is, the permanent magnet 2 in the initial state is at the bottommost part of the sealing space 12, the pressure stabilizing pieces 8 are compressed, and further upward elastic force acts on the magnet seat 5, the valve core 3 is connected with the magnet seat 5, the lower ends of the magnet seat 5 are fixedly connected with the permanent magnet 2, the valve core 3, the magnet seat 5 and the permanent magnet seat 2 can be regarded as a whole with mass, the elastic force generated by the pressure stabilizing pieces 8 is relieved to counteract the weight of the magnet seat 5, the valve core 3 and the permanent magnet 2, and the elastic membrane 2, and simultaneously, when the electromagnetic switch mechanism 15 is electrified, the pressure stabilizing piece 2, and the elastic membrane 8 can play an elastic role in the upward movement when the elastic pressure stabilizing channel, and when the pressure stabilizing piece is in the pressure stabilizing channel,

it should be noted that the electromagnetic switch mechanism 15 is disposed at the lower end of the sealed space 12 and is separated by the outer shell of the valve body 1, and an iron core is disposed inside the electromagnetic switch mechanism 15, so that the permanent magnet 2 is still attached to the bottommost portion of the sealed space 12 in spite of the upward elastic force of the pressure stabilizer 8 in the initial state, the electromagnetic switch mechanism 15 is screwed at the lower end of the outer shell of the valve body 1, and the specific position is directly below the valve core 3, and it should be noted that the valve core 3, the permanent magnet 2 and the magnet seat 5 are disposed on the same axial center line, and in addition, the valve core 3 is hollow, so that the weight of the valve core 3 can be properly reduced, and the electromagnetic valve can be smoother and quicker in the switching process.

The utility model relates to an operation process and a control principle of an anti-corrosion structure of an electromagnetic valve, which are as follows:

an iron block is arranged in the middle of the electromagnetic switch mechanism 15, the iron block is fixed, a coil is arranged around the iron block, in an initial state, the electromagnetic switch mechanism 15 is not electrified, because the permanent magnet 2 has magnetism and attracts with the iron block, because the iron block is fixed, the permanent magnet 2 drives the magnet seat 5 to move downwards and finally cling to the bottommost part of the sealing space 12, further drives the valve core 3 sleeved with the magnet seat 5 to move downwards, an air outlet channel is provided with an air outlet above the valve core 3, at the moment, because the valve core 3 moves downwards, the edge of the upper end of the air outlet clings to the upper end of the valve core 3, the air outlet is blocked, an electromagnetic valve cannot be ventilated, when the electromagnetic switch mechanism 15 is electrified, the iron block has magnetism due to the surrounding coil, the direction of controlling current passing through the coil, the magnetic pole possessed by the iron block is guaranteed to be opposite to the magnetic pole of the permanent magnet 2, and the permanent magnet 2 is sprung open at the moment, the magnet seat 5 and the valve core 3 sleeved on the magnet seat 5 are driven to move upwards together, so that an air outlet arranged in an air outlet channel is separated from the upper end of the valve core 3, corrosive medium in a valve is discharged from the air outlet into the valve, further, in an initial state, the pressure stabilizing piece 8 is pressed tightly, the generated elastic force is similar to the sum of the weights of the valve core 3, the magnet seat 5 and the permanent magnet 2, therefore, when the electromagnetic switch mechanism 15 is electrified, the permanent magnet 2 can be quickly sprung by repulsive force generated between the permanent magnet 2 and an iron block, in the actual state, the generated pressure is not necessarily uniform when the air in the valve body 1 circulates or stagnates, in order to stabilize the working state of the electromagnetic valve, more important matters are that the permanent magnet 2 is protected from the corrosive medium in the valve body 1, the membrane 9 is arranged to put the permanent magnet 2 in the sealing space 12, the pressure inside the valve main body 1 is stabilized by the expansion and contraction of the leather film 9 without contacting with the medium communicated with the valve body, and the medium circulation state is further stabilized by the pressure stabilizer 8 arranged at the lower end of the magnet seat 5.

Claims (9)

1. The utility model provides an anti-corrosion structure of solenoid valve, includes valve main part (1) and permanent magnet (2), and valve main part (1) inside is equipped with the passageway, its characterized in that permanent magnet (2) are in the passageway outside, case (3) tip parcel permanent magnet (2).

2. The electromagnetic valve anti-corrosion structure according to claim 1, characterized in that a magnet seat (5) is arranged at the end part of the valve core (3), a hollow clamping table (7) is arranged at the tail end of the magnet seat (5), and the magnet seat (5) clamps the permanent magnet (2).

3. The electromagnetic valve corrosion prevention structure as recited in claim 2, characterized in that a pressure stabilizer (8) is provided at a distal end portion of the magnet holder (5).

4. A solenoid valve corrosion protection structure according to claim 2 or 3, characterized in that a film (9) is provided at the contact position of the magnet seat (5) and the valve core (3), and the film (9) separates the valve core (3) and the magnet seat (5) in two independent spaces.

5. The electromagnetic valve anti-corrosion structure according to claim 4, characterized in that the end part of the valve core (3) is provided with a bulge, the middle of the magnet seat (5) is provided with an axially through hole (16), the upper end part of the through hole (16) is provided with a concave table (17) which is sunken towards the outer side of the magnet seat (5), the end part of the coating (9) is provided with an expansion body (18), and the expansion body (18) is clamped with the magnet seat (5).

6. The electromagnetic valve anti-corrosion structure according to claim 4, characterized in that the membrane (9) divides the internal channel of the valve body (1) into a ventilation space (11) and a sealing space (12), the space where the valve core (3) is located is the ventilation space (11), and the space where the magnet seat (5) is located is the sealing space (12).

7. The electromagnetic valve anti-corrosion structure according to claim 5, characterized in that a spring card (13) is arranged at the lower end part of the through hole (16), the spring card (13) is in a circular ring shape, and the inner side is divided into four flaps with uniform size and is tightly attached to the end part of the valve core (3).

8. The electromagnetic valve anticorrosion structure according to claim 4, characterized in that the valve core (3) is internally provided with a cylindrical cavity.

9. The electromagnetic valve corrosion prevention structure according to claim 1 or 2 or 3 or 5 or 6 or 7, characterized in that an electromagnetic switching mechanism (15) is provided outside the valve body (1), the electromagnetic switching mechanism (15) being established in correspondence with the permanent magnet (2).