CN112032338A

CN112032338A - Two-way electromagnetic valve

Info

Publication number: CN112032338A
Application number: CN202010836908.1A
Authority: CN
Inventors: 吴奇勋; 蔡士军
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2020-12-04

Abstract

The invention belongs to the technical field of electromagnetic valves, and particularly relates to a two-way electromagnetic valve which comprises a valve body, wherein a first mounting opening and a second mounting opening are respectively arranged on the left side and the right side of the valve body; a middle partition plate is arranged in the valve body; the middle position of the middle clapboard is provided with a step seat; the valve body is provided with an upper mounting seat; a coil is arranged in the upper mounting seat; a fixed iron core is arranged in the upper mounting seat; a step valve core is arranged in the upper mounting seat; one end of the stepped valve core close to the fixed iron core has magnetism; the lower end of the stepped valve core is provided with a step shape; the stepped valve core is opposite to the stepped seat and can be inserted into the stepped seat; the electromagnetic valve has the advantages of simple structure, flexible action, low production cost and high working reliability.

Description

Two-way electromagnetic valve

Technical Field

The invention belongs to the technical field of electromagnetic valves, and particularly relates to a bidirectional electromagnetic valve.

Background

The two-way solenoid valve on the market generally all has two valve discs, consequently requires extremely high to the processing and assembly condition of two valve discs, otherwise is unfavorable for the sealed of medium, makes the structure of solenoid valve more complicated, and has improved manufacturing cost. In addition, if one of the two valve disks is damaged, leakage of the medium can occur, resulting in unreliable operation.

Some technical solutions also exist in the prior art, such as chinese patent with application number CN201821343709.1, including an electromagnetic assembly and a valve body assembly, the above-mentioned electromagnetic valve can effectively prevent the effect of medium backflow in the process of controlling the use of fluid, but there is a problem that this solution can only perform one-way adjustment on the flow guide channel through the valve body when controlling the flow, and cannot perform two-channel adjustment control according to the flow direction of the fluid, and in the long-time use process of the electromagnetic valve, the sealing plug inside the valve body is easy to wear and age, thereby reducing the sealing effect of the electromagnetic valve, causing the leakage situation, and reducing the reliability of the electromagnetic valve during operation.

Disclosure of Invention

In order to make up for the defects of the prior art, ensure that the electromagnetic valve can be completely closed when the fluid in the pipeline flows in two directions, block the flow of the fluid in the pipeline, avoid the leakage of the fluid in the pipeline through the node of the electromagnetic valve and improve the reliability of the electromagnetic valve during working, the invention provides the two-way electromagnetic valve.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention discloses a two-way electromagnetic valve which comprises a valve body, wherein a first mounting opening is formed in the left side of the valve body; a second mounting opening is formed in the right side of the valve body; the first mounting port and the second mounting port are positioned on the same plane; a middle partition plate is arranged in the valve body; the middle partition plate divides the interior of the valve body into an upper space and a lower space; the first mounting port is communicated with the upper space; the second mounting port is communicated with the lower space; the middle position of the middle clapboard is provided with a step seat; the middle of the step seat is communicated with the upper space and the lower space; the inner side surface of the step seat is provided with steps, and the diameter of the step close to the upper part of the step seat is larger; the valve body is provided with an upper mounting seat; the upper mounting seat is positioned above the valve body; a coil is arranged in the upper mounting seat; a fixed iron core is arranged in the upper mounting seat; the fixed iron core is positioned at the inner side of the coil; a step valve core is arranged in the upper mounting seat; the stepped valve core is positioned below the fixed iron core; one end of the stepped valve core close to the fixed iron core has magnetism; the lower end of the stepped valve core is arranged in a stepped shape, and the diameter of the step close to the lower end of the stepped valve core is smaller; the stepped valve core is opposite to the stepped seat and can be inserted into the stepped seat;

when the electromagnetic valve works, the first mounting port and the second mounting port of the valve body are respectively connected into a pipeline, then the coil in the valve body is controlled to work through the controller, after the coil is electrified, magnetic force is generated in the fixed iron core in the upper mounting seat, downward acting force is generated on the stepped valve core below the fixed iron core, the stepped valve core is pushed to move downwards, so that the stepped valve core is inserted into the stepped seat, the stepped seat is sealed, fluid in the pipeline is stopped, fluid in the pipeline is prevented from flowing, meanwhile, after the stepped valve core is inserted into the stepped seat, as the inner side of the stepped seat and the lower end of the stepped valve core are both arranged in a stepped shape and are mutually wedged, the sealing property to fluid is better, the fluid in the valve body is prevented from penetrating through the valve body through a gap between the stepped valve core and the stepped seat, the electromagnetic valve fails when being closed, so that the working reliability of the electromagnetic valve is reduced, meanwhile, due to the arrangement of the steps, the effective working surface area between the step valve core and the step seat is increased, the sealing performance of the electromagnetic valve when the electromagnetic valve is closed is improved, leakage of the electromagnetic valve when the electromagnetic valve is closed is prevented, the reliability of the electromagnetic valve is improved, meanwhile, when fluid in the electromagnetic valve flows in two directions through the step seat and the step valve core, the sealing performance of a higher level can be kept, and the reliability of the electromagnetic valve when the electromagnetic valve is closed is ensured.

Preferably, a sealing ring is arranged on the stepped valve core; the sealing ring is positioned on the stepped step side surface at the lower end of the stepped valve core; the sealing ring is positioned between the stepped valve core and the stepped seat;

during operation, after the solenoid valve is put through the coil power at the controller, promote ladder case and insert back in the ladder seat, the sealing washer that ladder-shaped step side set up on the ladder case and the ladder-shaped step side in the ladder seat contact each other, thereby improve the leakproofness between ladder case and the ladder seat, and simultaneously, can guarantee in long-time through the sealing washer, lead to wearing and tearing seriously between ladder case and the ladder seat, lead to after the clearance between the two increases, the sealing washer still can guarantee that the leakproofness between the two is in the qualified line, the effectual life who prolongs the solenoid valve, and simultaneously, accessible more renewed sealing washer, closure when improving the solenoid valve and closing, appear leaking in the clearance between ladder case and the ladder seat when preventing the solenoid valve from closing, lead to the solenoid valve reliability to reduce.

Preferably, the lower end of the step seat is provided with a mounting frame; the fluid can enter the step seat through two sides of the mounting frame; a first cavity is formed in the mounting frame; a movable plate is arranged in the first cavity in a sliding manner; the movable plate keeps sealed with one side wall of the cavity; a gas channel is formed in the side wall of the mounting rack; a second cavity is formed in the stepped seat; the second cavity is vertical to the central line of the step seat; the outlet of the cavity II is positioned at the inner side of the step seat; the second cavity is communicated with the gas channel; a clamping column is arranged in the second cavity; the clamping column freely moves in the second cavity, and sealing is kept between the clamping column and the side wall of the second cavity; the lower end of the stepped valve core is provided with a clamping groove; the clamping column can be inserted into the clamping groove; a containing hole is formed in the stepped valve core; the magnetic conduction rod is arranged in the accommodating hole; the lower end of the magnetic conducting rod can be inserted into the first cavity in the mounting frame; the movable plate is magnetic;

when the electromagnetic valve is in work, when the electromagnetic valve is closed, the stepped valve core moves downwards, the magnetic conducting rod at the lower end of the step is inserted into the first cavity, the movable plate in the first cavity is under the action of magnetic force, the movable plate starts to move downwards under the action of magnetic force, the space below the movable plate in the first cavity is compressed, the gas pressure is increased, the pressure in the second cavity is synchronously increased after the pressure in the first cavity is increased due to the fact that the second cavity is communicated with the first cavity, the pressure in the second cavity is increased after the pressure in the first cavity is increased, the clamping column in the second cavity extends out of the first cavity under the action of rising pressure, meanwhile, after the magnetic conducting rod is inserted into the first cavity, the stepped valve core is completely inserted into the stepped seat after the clamping column extends out, the clamping column is inserted into the clamping groove in the stepped valve core, the valve core is fixed, and when the pressure in a pipeline is too high, the fluid pressure is greater than the, the gap between the stepped valve core and the stepped seat is increased, the sealing between the stepped valve core and the stepped seat fails, fluid in a pipeline can still flow, the electromagnetic valve fails to be closed, and the reliability of the electromagnetic valve is reduced.

Preferably, the lower end of the magnetic conduction rod is fixed on the mounting frame, and the magnetic conduction rod is positioned on the inner side of the step seat; the lower end of the magnetic conducting rod is inserted into the second cavity; the center line of the magnetic conducting rod is superposed with the center line of the step seat; the magnetic conducting rod is inserted into the accommodating hole; a first spring is arranged in the accommodating hole; a cross rod is arranged on the magnetic conducting rod; the spring is positioned between the cross rod and the top wall of the accommodating hole; the step valve core is upward elastic force of a spring. After the coil is electrified, the magnetic force between the fixed iron core and the stepped valve core is greater than the elastic force of the first spring; after the coil is powered off, the gravity of the stepped valve core is smaller than the elastic force of the first spring;

when the electromagnetic valve is in operation, when the electromagnetic valve is closed, the stepped valve core descends, meanwhile, because the magnetic conducting rod is fixed on the mounting frame, and the upper end of the magnetic conducting rod is inserted into the accommodating hole in the stepped valve core, the stepped valve core moves along the magnetic conducting rod when descending, thereby guiding the stepped valve core through the magnetic conducting rod, avoiding the stepped valve core from shaking when descending, causing collision between the stepped valve core and the stepped seat, accelerating the abrasion speed between the stepped valve core and the stepped seat, causing the service life of the electromagnetic valve to be reduced, simultaneously, the stepped valve core can be accurately inserted into the stepped seat through the guiding function of the magnetic conducting rod, thereby minimizing the gap between the stepped valve core and the stepped seat, improving the sealing property between the stepped valve core and the stepped seat, preventing fluid from leaking through the gap between the stepped valve core and the stepped seat, improving the reliability of the electromagnetic valve, and simultaneously, when the electromagnetic, the ladder valve core is under the magnetic action of the fixed iron core, the ladder valve core moves downwards, the downward magnetic force borne by the ladder valve core is larger than the elastic force of the first spring in the accommodating hole, after the ladder valve core is inserted into the ladder seat, the upper end of the magnetic conduction rod is contacted with the top wall of the upper end of the accommodating hole in the ladder valve core, the magnetism at the upper end of the ladder valve core is transmitted into the first cavity through the magnetic conduction rod and interacts with the movable plate in the first cavity to push the movable plate to move downwards, so that the pressure in the first cavity is increased, the pressure in the second cavity is synchronously increased, the clamping column extends out, the clamping column is clamped into the clamping groove in the ladder valve core, the ladder valve core is clamped, the ladder valve.

Preferably, the inner side of the upper mounting seat is provided with threads; a fixing frame is arranged in the upper mounting seat through threads; an installation groove is formed in the side wall of the fixed frame, and the opening of the installation groove is vertically upward; a coil is arranged in the mounting groove; the fixing frame is made of plastic materials with good corrosion resistance; a sealing plate is arranged between the upper end of the fixing frame and the upper mounting seat;

during operation, the coil passes through the mount and installs in last mount pad, avoid the coil external in the valve body outside, in the use, lead to the unexpected damage of coil, lead to the solenoid valve inefficacy, and simultaneously, be provided with the closing plate between mount and the last mount pad, can further guarantee the leakproofness, prevent that the fluid in the valve body from entering into the coil, lead to the coil including the short circuit, damage including corruption, and simultaneously, the coil sets up in last mount pad, the distance between coil and the fixed iron core has been shortened, when having improved the fixed iron core at the coil circular telegram, the magnetic field length of excitation, improve the action dynamics of electro-magnet, the operating pressure and the working dynamics of improvement solenoid valve, increase the working range of solenoid valve.

Preferably, a first through hole is formed in the stepped valve core; the inlet of the first through hole is positioned on the lower end face of the stepped valve core; the upper end of the stepped valve core is provided with a transverse hole; the transverse hole is communicated with the first through hole, and an opening of the transverse hole is positioned on the side face of the stepped valve core; an annular groove is formed in the inner side wall of the upper mounting seat; when the stepped valve core moves upwards to be opened, the transverse hole on the stepped valve core is opposite to the annular groove; a heat dissipation channel is arranged in the side wall of the upper mounting seat; the inlet of the heat dissipation channel is positioned in the annular groove; a first bell mouth is arranged in the first mounting hole; the opening direction of the first bell mouth faces to the direction far away from the valve body; the first bell mouth is communicated with an outlet of the heat dissipation channel;

when the electromagnetic valve is in operation, when the electromagnetic valve is opened, the stepped valve core rises, the transverse hole on the side surface of the stepped valve core is opposite to the annular groove, meanwhile, when fluid in the electromagnetic valve flows to the first mounting opening from the second mounting opening, the flowing fluid impacts the stepped valve core from the lower part, so that the fluid enters the first through hole in the stepped valve core from the first through hole at the lower end of the stepped valve core, finally enters the annular groove through the transverse hole, and then enters the heat dissipation channel in the upper mounting seat, finally, the fluid in the heat dissipation channel is discharged from the first bell mouth in the first mounting opening, and is converged with the fluid discharged from the valve body and flows out of the electromagnetic valve together, meanwhile, when the fluid in the heat dissipation channel moves, the heat generated by the coil mounted in the upper mounting seat can be effectively taken away, the temperature of the coil is reduced, the damage of the coil due to overhigh temperature is prevented, and meanwhile, when the fluid in the electromagnetic valve flows to the, the fluid meets the first bell mouth in the first mounting port, the fluid reversely enters the heat dissipation channel through the first bell mouth, then the fluid in the heat dissipation channel enters the annular groove, then the fluid enters the first through hole in the stepped valve core through the transverse hole right facing the annular groove, finally the fluid is discharged from the inlet of the first through hole, the fluid is converged with other fluids in the valve body and is discharged out of the valve body together, and through the bell mouth arranged in the first mounting port and the inlet of the first through hole arranged on the lower end face of the stepped valve core, when the fluid in the electromagnetic valve flows in two directions, the fluid flow in the heat dissipation channel can be effectively guaranteed, the heat dissipation of the coil is guaranteed, the temperature of the coil is maintained in a lower range, and the coil is prevented from being damaged due to overhigh temperature.

Preferably, the valve body is provided with a lower mounting seat; the lower mounting seat is positioned below the valve body, and the lower mounting seat is opposite to the upper mounting seat; a cavity III is formed in the lower mounting seat; an extension column is arranged in the cavity III and can move up and down in the cavity III; a second spring is arranged in the cavity III; the second spring is positioned below the extending column; bristles are arranged on the extending columns; the extending column is inserted into the step seat; the upper end of the extending column can be contacted with the lower end of the stepped valve core;

when the electromagnetic valve is closed, the stepped valve core is inserted into the stepped seat, the lower end of the stepped valve core extrudes the extending column, the extending column is extruded to gradually descend, and in the descending process, the bristles on the extending column clean the stepped steps in the stepped seat to prevent impurities in fluid from being deposited on the stepped seat to cause the descending of the stepped valve core when the electromagnetic valve is opened, so that when the electromagnetic valve is closed, the stepped valve core and the stepped seat cannot be in close contact due to the impurities on the stepped seat to cause the sealing between the stepped valve core and the stepped seat, fluid in the valve body leaks through a gap between the stepped valve core and the stepped seat to cause the closing failure of the electromagnetic valve, the reliability of the electromagnetic valve is reduced, meanwhile, when the electromagnetic valve is opened, the stepped valve core rises, the extending column rises under the action of the spring II in the cavity III and is inserted into the stepped seat, and the extending column extends and descends, the bristles on the extending columns clean the inner side of the step seat and prevent impurities from being deposited on the inner surface of the step seat.

Preferably, two brush rods are arranged at the upper end of the extending column; the brush rod is provided with brush bristles; the brush rod extends into the ladder seat from two sides of the mounting frame; the upper end of the brush rod is contacted with the lower end of the stepped valve core;

during operation, stretch out and install two brush-holder clubs on the post, stretch into the ladder seat from the both sides of mounting bracket in, avoid the collision between brush-holder club and the mounting bracket, prevent to appear damaging, simultaneously, stretch out two brush-holder clubs that set up on the post and can effectually stretch out the inboard clean effect of post pair ladder seat, simultaneously, reduce the resistance that single brush-holder club received, prevent to block and the brush-holder club rupture, extension solenoid valve life.

Preferably, an included angle exists between the bristles on the brush rod and the brush rod; the bristles are arranged on the brush rod in a downward inclined mode;

during operation, the obliquely downward bristles arranged on the brush rod can clean impurities on the horizontal plane of the steps in the step seat through the downward bristles when the brush rod is pressed down by the step valve core, so that the cleaning effect and the cleaning efficiency are improved, the impurities are fully cleaned from the step seat, the reliability of the electromagnetic valve is improved when the electromagnetic valve is closed, the electromagnetic valve is prevented from being leaked when the electromagnetic valve is closed, and the electromagnetic valve is caused to lose efficacy.

Preferably, the middle position of the upper end of the extending column is provided with a mounting shaft; the mounting shaft is fixedly connected with the extending column; the upper end of the mounting shaft is fixedly connected with a fixing plate; the brush rods are arranged at two ends of the fixing plate; the brush rod can freely rotate on the fixing plate; a second gear is fixedly arranged at the lower end of the brush rod; a first gear is mounted on the mounting shaft; the first gear is positioned below the fixing plate and can rotate on the mounting shaft; the first gear is meshed with the second gear; the lower end of the first gear is provided with an impeller; the diameter of the impeller is larger than that of the extending column;

when the electromagnetic valve is in operation, when the electromagnetic valve is opened, fluid in the valve body flows through the electromagnetic valve, the impeller on the installation shaft is impacted, the impeller rotates to drive the gear I to rotate, the gear drives the gear II to rotate, the rotation of the brush rod is driven through the rotation of the gear II, meanwhile, when the electromagnetic valve is opened, the brush rod is inserted into the stepped seat, in the process of the rotation of the brush rod, bristles on the brush rod fully clean the inner wall of the stepped seat, impurities in the fluid are prevented from being deposited on the inner wall of the stepped seat, when the electromagnetic valve is closed, a gap exists between the stepped valve core and the stepped seat, the fluid in the valve body leaks from the gap, the electromagnetic valve is caused to fail, and.

Preferably, a second bell mouth is installed in the second installation hole; the outlet of the second bell mouth faces to the direction far away from the valve body; a catheter is arranged in the valve body; the liquid guide pipe is communicated with the second bellmouth; the outlet of the liquid guide pipe is aligned with the impeller; an included angle is formed between a single blade on the impeller and the vertical direction;

when the electromagnetic valve works, when the electromagnetic valve is opened, fluid in the valve body flows to the first mounting opening through the second mounting opening, the fluid is at the second mounting opening, part of the fluid enters the liquid guide pipe through the second bell mouth and is discharged from the liquid guide pipe aligned with the impeller so as to impact the impeller and push the impeller to rotate, so that the brush rod rotates to clean the inner surface of the stepped seat, meanwhile, when the fluid in the valve body flows to the second mounting opening through the first mounting opening, the fluid enters the lower space of the valve body through the stepped seat, because the extension rod can be inserted into the stepped seat, the fluid passing through the stepped seat directly impacts the impeller arranged on the mounting shaft, meanwhile, because an included angle exists between a single blade of the impeller and the vertical direction, the fluid can push the impeller to rotate when impacting the impeller after passing through the stepped seat, thereby ensuring the bidirectional flow of the fluid in the electromagnetic valve, the impeller can be pushed to rotate to drive the brush rod to rotate, so that the inner surface of the step seat is cleaned, and the reliability of the electromagnetic valve is improved.

The invention has the following beneficial effects:

1. according to the two-way electromagnetic valve, the stepped valve core and the stepped seat are arranged, and the stepped valve core is matched with the stepped seat, so that the area of a working surface when the stepped valve core and the stepped seat are in contact is increased, the sealing property between the stepped valve core and the stepped seat is improved, fluid in a pipeline is prevented from leaking from the electromagnetic valve, and the reliability of the electromagnetic valve is improved.

2. According to the bidirectional electromagnetic valve, the extending column, the brush rod and the impeller are arranged, so that the impeller can extend into the stepped seat, the brush rod is driven to rotate by the impeller, bristles on the brush rod can clean the inner surface of the stepped seat, impurities in a fluid are prevented from being deposited on the working surface of the stepped seat, the sealing property between the stepped valve core and the stepped seat is reduced, the fluid is prevented from leaking, and the reliability of the electromagnetic valve is reduced.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a partial cross-sectional view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

in the figure: the valve comprises a valve body 1, a first mounting port 11, a first bell mouth 111, a second mounting port 12, a second bell mouth 121, a liquid guide pipe 122, a middle partition plate 13, a stepped seat 2, a mounting frame 21, a first cavity 22, a movable plate 23, a clamping column 24, a magnetic conduction rod 25, a first spring 251, a stepped valve core 3, a first through hole 31, an upper mounting seat 4, a fixing frame 41, a coil 411, an annular groove 42, a fixed iron core 43, a sealing plate 44, a lower mounting seat 5, an extending column 51, a second spring 511, a mounting shaft 512, a first gear 513, an impeller 52, a fixing plate 53, a brush rod 54 and a second gear 541.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 3, the two-way solenoid valve of the present invention includes a valve body 1, wherein a first mounting opening 11 is disposed on a left side of the valve body 1; a second mounting port 12 is formed in the right side of the valve body 1; the first mounting port 11 and the second mounting port 12 are positioned on the same plane; a middle partition plate 13 is arranged in the valve body 1; the middle partition plate 13 divides the interior of the valve body 1 into an upper space and a lower space; the first mounting port 11 is communicated with the upper space; the second mounting port 12 is communicated with the lower space; the middle position of the middle partition plate 13 is provided with a step seat 2; the middle of the step seat 2 is communicated with the upper space and the lower space; the inner side surface of the step seat 2 is provided with steps, and the diameter of the step close to the upper part of the step seat 2 is larger; an upper mounting seat 4 is arranged on the valve body 1; the upper mounting seat 4 is positioned above the valve body 1; a coil 411 is arranged in the upper mounting seat 4; a fixed iron core 43 is arranged in the upper mounting seat 4; the fixed iron core 43 is positioned inside the coil 411; a step valve core 3 is arranged in the upper mounting seat 4; the step spool 3 is positioned below the fixed iron core 43; one end of the stepped valve core 3 close to the fixed iron core 43 has magnetism; the lower end of the stepped valve core 3 is arranged in a stepped shape, and the diameter of the step close to the lower end of the stepped valve core 3 is smaller; the stepped valve core 3 is opposite to the stepped seat 2, and the stepped valve core 3 can be inserted into the stepped seat 2;

when the valve works, the first mounting port 11 and the second mounting port 12 of the valve body 1 are respectively connected into a pipeline, then the coil 411 in the valve body 1 is controlled to work through the controller, after the coil 411 is electrified, magnetic force is generated in the fixed iron core 43 in the upper mounting seat 4, downward acting force is generated on the stepped valve core 3 below the fixed iron core 43, the stepped valve core 3 is pushed to move downwards, so that the stepped valve core 3 is inserted into the stepped seat 2, the stepped seat 2 is closed, fluid flow in the pipeline is stopped, fluid flow in the pipeline is prevented, meanwhile, after the stepped valve core 3 is inserted into the stepped seat 2, because the inner side of the stepped seat 2 and the lower end of the stepped valve core 3 are both arranged in a stepped shape and are mutually wedged, the fluid tightness to the fluid is better, and the fluid in the valve body 1 is prevented from passing through the valve body 1 through a gap between the stepped valve core 3 and the stepped seat 2, the electromagnetic valve is caused to lose efficacy when being closed, so that the working reliability of the electromagnetic valve is reduced, meanwhile, due to the arrangement of the ladder shape, the effective working surface area between the ladder valve core 3 and the ladder seat 2 is increased, the sealing performance of the electromagnetic valve when being closed is improved, the leakage of the electromagnetic valve when being closed is prevented, the reliability of the electromagnetic valve is improved, meanwhile, when the fluid in the electromagnetic valve flows in two directions through the ladder shape arrangement of the ladder seat 2 and the ladder valve core 3, the sealing performance at a higher level can be kept, and the reliability of the electromagnetic valve when being closed is ensured.

As an embodiment of the present invention, a seal ring is disposed on the stepped valve core 3; the sealing ring is positioned on the stepped step side surface at the lower end of the stepped valve core 3; the sealing ring is positioned between the stepped valve core 3 and the stepped seat 2;

during operation, after the solenoid valve is in controller switch-on coil 411 power, promote ladder case 3 and insert back in ladder seat 2, the sealing washer that ladder-shaped step side set up on ladder case 3 and the ladder-shaped step side in the ladder seat 2 contact each other, thereby improve the leakproofness between ladder case 3 and the ladder seat 2, and simultaneously, can guarantee for a long time through the sealing washer, lead to wearing and tearing seriously between ladder case 3 and the ladder seat 2, lead to after the clearance between the two increases, the sealing washer still can guarantee that the leakproofness between the two is in the qualification line, effectual extension solenoid valve's life, and simultaneously, accessible more renew's sealing washer, the leakproofness when improving the solenoid valve and closing, appear leaking in the clearance between ladder case 3 and the ladder seat 2 when preventing the solenoid valve from closing, lead to the solenoid valve reliability reduction.

As an embodiment of the present invention, the lower end of the step base 2 is mounted with a mounting bracket 21; the fluid can enter the step seat 2 through both sides of the mounting frame 21; a first cavity 22 is formed in the mounting frame 21; a movable plate 23 is slidably mounted in the first cavity 22; the movable plate 23 keeps a seal with the side wall of the first cavity 22; a gas channel is formed in the side wall of the mounting frame 21; a cavity II is formed in the step seat 2; the second cavity is perpendicular to the central line of the stepped seat 2; the outlet of the second cavity is positioned at the inner side of the step seat 2; the second cavity is communicated with the gas channel; a clamping column 24 is arranged in the cavity II; the clamping column 24 freely moves in the second cavity, and the sealing is kept between the clamping column 24 and the side wall of the second cavity; the lower end of the stepped valve core 3 is provided with a clamping groove; the clamping column 24 can be inserted into the clamping groove; a containing hole is formed in the stepped valve core 3; a magnetic conduction rod 25 is arranged in the accommodating hole; the lower end of the magnetic conducting rod 25 can be inserted into the first cavity 22 in the mounting frame 21; the movable plate 23 is magnetic;

when the electromagnetic valve is in operation, when the electromagnetic valve is closed, the stepped valve core 3 moves downwards, the magnetic conducting rod 25 at the lower end of the step is inserted into the first cavity 22, the movable plate 23 in the first cavity 22 is under the action of the magnetic force conducted by the magnetic conducting rod 25, the movable plate 23 starts to move downwards under the action of the magnetic force, the space of the first cavity 22 below the movable plate 23 is compressed, the gas pressure is increased, because the second cavity is communicated with the first cavity 22, after the pressure in the first cavity 22 is increased, the pressure in the second cavity is synchronously increased, after the pressure in the second cavity is increased, the clamping column 24 in the second cavity extends out of the second cavity under the action of the raised pressure, meanwhile, after the magnetic conducting rod 25 is inserted into the first cavity 22, the stepped valve core 3 is completely inserted into the stepped seat 2, after the clamping column 24 extends out, the clamping groove on the stepped valve core 3 is inserted, the valve core is fixed, the fluid pressure is greater than the pressure of the stepped valve core 3 pressing down, so that the stepped valve core 3 is pushed away from the stepped seat 2 under the action of the fluid pressure, the gap between the stepped valve core 3 and the stepped seat 2 is increased, the sealing between the stepped valve core 3 and the stepped seat 2 fails, the fluid in the pipeline can still flow, the electromagnetic valve is failed to be closed, and the reliability of the electromagnetic valve is reduced.

As an embodiment of the present invention, the lower end of the magnetic conducting rod 25 is fixed on the mounting frame 21, and the magnetic conducting rod 25 is located inside the step seat 2; the lower end of the magnetic conducting rod 25 is inserted into the second cavity; the central line of the magnetic conducting rod 25 is superposed with the central line of the stepped seat 2; the magnetic conducting rod 25 is inserted into the accommodating hole; a first spring 251 is arranged in the accommodating hole; a cross rod is arranged on the magnetic conducting rod 25; the first spring 251 is positioned between the cross rod and the top wall of the accommodating hole; the step spool 3 is biased upward by a first spring 251. After the coil 411 is electrified, the magnetic force between the fixed iron core 43 and the stepped valve core 3 is greater than the elastic force of a first spring 251; after the coil 411 is powered off, the gravity of the stepped valve core 3 is smaller than the elastic force of a first spring 251;

when the electromagnetic valve is in operation, when the electromagnetic valve is closed, the stepped valve core 3 descends, and simultaneously, because the magnetic conducting rod 25 is fixed on the mounting frame 21, and the upper end of the magnetic conducting rod 25 is inserted into the accommodating hole in the stepped valve core 3, the stepped valve core 3 moves along the magnetic conducting rod 25 when descending, so that the stepped valve core 3 is guided by the magnetic conducting rod 25, the situation that the stepped valve core 3 shakes when descending to cause collision between the stepped valve core 3 and the stepped seat 2 is avoided, the abrasion speed between the stepped valve core 3 and the stepped seat 2 is accelerated, the service life of the electromagnetic valve is reduced, meanwhile, the stepped valve core 3 can be accurately inserted into the stepped seat 2 through the guiding effect of the magnetic conducting rod 25, so that the gap between the stepped valve core 3 and the stepped seat 2 is minimized, the sealing performance between the stepped valve core 3 and the stepped seat 2 is improved, and fluid is prevented from leaking through the gap between the, the reliability of the electromagnetic valve is improved, meanwhile, when the electromagnetic valve starts to be closed, the stepped valve core 3 is under the magnetic force action of the fixed iron core 43, the stepped valve core 3 moves downwards, the downward magnetic force borne by the stepped valve core 3 is larger than the elastic force of the first spring 251 in the accommodating hole, after the stepped valve core 3 is inserted into the stepped seat 2, the upper end of the magnetic conducting rod 25 is contacted with the top wall of the upper end of the accommodating hole in the stepped valve core 3, the magnetism at the upper end of the stepped valve core 3 is transmitted into the first cavity 22 through the magnetic conducting rod 25 and interacts with the movable plate 23 in the first cavity 22 to push the movable plate 23 to move downwards, so that the pressure in the first cavity 22 is raised, the pressure in the second cavity is raised synchronously, the clamping column 24 extends out and is clamped into the clamping groove in the stepped valve core 3, the stepped valve core 3 is clamped.

As an embodiment of the present invention, the inner side of the upper mounting seat 4 is provided with a thread; a fixed frame 41 is arranged in the upper mounting seat 4 through threads; an installation groove is formed in the side wall of the fixed frame 41, and the opening of the installation groove is vertically upward; a coil 411 is arranged in the mounting groove; the fixing frame 41 is made of a plastic material with good corrosion resistance; a sealing plate 44 is arranged between the upper end of the fixing frame 41 and the upper mounting seat 4;

during operation, coil 411 passes through mount 41 and installs in last mount pad 4, avoid coil 411 external in the valve body 1 outside, in the use, lead to the unexpected damage of coil 411, lead to the solenoid valve inefficacy, simultaneously, be provided with closing plate 44 between mount 41 and the last mount pad 4, can further guarantee the leakproofness, prevent that fluid in the valve body 1 from entering into in the coil 411, lead to coil 411 including the short circuit, damage including corruption, and simultaneously, coil 411 sets up in last mount pad 4, the distance between coil 411 and the fixed iron core 43 has been shortened, it is when coil 411 circular telegram to have improved fixed iron core 43, the magnetic field length of excitation, improve the action dynamics of electro-magnet, improve the operating pressure and the working dynamics of solenoid valve, increase the working range of solenoid valve.

As an embodiment of the present invention, a first through hole 31 is formed in the stepped valve core 3; the inlet of the first through hole 31 is positioned on the lower end surface of the stepped valve core 3; the upper end of the stepped valve core 3 is provided with a transverse hole; the transverse hole is communicated with the first through hole 31, and an opening of the transverse hole is positioned on the side surface of the stepped valve core 3; an annular groove 42 is formed in the inner side wall of the upper mounting seat 4; when the stepped valve core 3 moves upwards and is opened, the transverse hole on the stepped valve core 3 is opposite to the annular groove 42; a heat dissipation channel is arranged in the side wall of the upper mounting seat 4; the inlet of the heat dissipation channel is located in the annular groove 42; a first bell mouth 111 is arranged in the first mounting hole 11; the opening direction of the first bell mouth 111 faces to a direction far away from the valve body 1; the first bell mouth 111 is communicated with an outlet of the heat dissipation channel;

when the electromagnetic valve works, when the electromagnetic valve is opened, the stepped valve core 3 rises, the transverse hole on the side surface of the stepped valve core 3 is opposite to the annular groove 42, meanwhile, when fluid in the electromagnetic valve flows to the first mounting hole 11 from the second mounting hole 12, the flowing fluid impacts the stepped valve core 3 from the lower part, so that the fluid enters the first through hole 31 in the stepped valve core 3 from the inlet of the first through hole 31 at the lower end of the stepped valve core 3, finally enters the annular groove 42 through the transverse hole, then enters the heat dissipation channel in the upper mounting seat 4, finally, the fluid in the heat dissipation channel is discharged from the first bell mouth 111 in the first mounting hole 11, is converged with the discharged fluid in the valve body 1 and flows out of the electromagnetic valve together, meanwhile, when the fluid moves in the heat dissipation channel, the heat generated by the coil 411 mounted in the upper mounting seat 4 can be effectively taken away, the temperature of the coil 411 is reduced, and the over-high temperature damage of the coil 411 is, meanwhile, when the fluid in the solenoid valve flows from the first mounting port 11 to the first mounting port 11, the fluid meets the first bell mouth 111 in the first mounting port 11, the fluid reversely enters the heat dissipation passage through the first bell mouth 111, then, the fluid in the heat dissipation passage enters the annular groove 42, and then, enters the first through hole 31 in the stepped valve core 3 through a transverse hole opposite to the annular groove 42, is finally discharged from an inlet of the first through hole 31, is merged with other fluids in the valve body 1 and is discharged out of the valve body 1 together, through the bell mouth arranged in the first mounting port 11 and the inlet of the through hole I31 arranged on the lower end surface of the stepped valve core 3, when the fluid flows in the electromagnetic valve in two directions, can effectually guarantee to have fluid flow in the heat dissipation channel, guarantee the heat dissipation of coil 411, maintain coil 411 temperature and be in lower scope, prevent that coil 411 temperature is too high to damage.

As an embodiment of the present invention, a lower mounting seat 5 is mounted on the valve body 1; the lower mounting seat 5 is positioned below the valve body 1, and the lower mounting seat 5 is opposite to the upper mounting seat 4; a third cavity is formed in the lower mounting seat 5; an extending column 51 is arranged in the cavity III, and the extending column 51 can move up and down in the cavity III; a second spring 511 is arranged in the cavity III; the second spring 511 is positioned below the extending column 51; bristles are arranged on the extending column 51; the protruding column 51 is inserted into the stepped seat 2; the upper end of the protruding column 51 may contact the lower end of the stepped spool 3;

when the electromagnetic valve is closed, the stepped valve core 3 is inserted into the stepped seat 2, the lower end of the stepped valve core 3 extrudes the extending column 51, the extending column 51 is extruded to gradually descend, and in the descending process, bristles on the extending column 51 clean the stepped steps in the stepped seat 2 to prevent impurities in fluid from being deposited on the stepped seat 2 to cause the stepped valve core 3 to descend when the electromagnetic valve is opened, so that when the electromagnetic valve is closed, the stepped valve core 3 and the stepped seat 2 cannot be in close contact due to the impurities on the stepped seat 2 to cause the situation that the stepped valve core 3 and the stepped seat 2 cannot be sealed, the fluid in the valve body 1 leaks through a gap between the stepped valve core 3 and the stepped seat 2 to cause the closing failure of the electromagnetic valve and reduce the reliability of the electromagnetic valve, meanwhile, when the electromagnetic valve is opened, the stepped valve core 3 rises under the action of the second spring 511 in the cavity III, inserted into the step seat 2, the extending column 51 is arranged in the process of extending and descending, and the bristles on the extending column 51 clean the inner side of the step seat 2 to prevent impurities from depositing on the inner surface of the step seat 2.

As an embodiment of the present invention, the upper end of the protruding column 51 is provided with two brush bars 54; the brush rod 54 is provided with bristles; the brush rod 54 extends into the step seat 2 from two sides of the mounting frame 21; the upper end of the brush rod 54 is contacted with the lower end of the stepped valve core 3;

the during operation stretches out and installs two brush-holder stud 54 on the post 51, stretches into ladder seat 2 from the both sides of mounting bracket 21 in, avoids the collision between brush-holder stud 54 and the mounting bracket 21, prevents to appear damaging, simultaneously, stretches out two brush-holder studs 54 that set up on the post 51 and can effectually stretch out post 51 to the inboard clean effect of ladder seat 2, simultaneously, reduces the resistance that single brush-holder stud 54 received, prevents to block and the break of brush-holder stud 54, extension solenoid valve life.

In one embodiment of the present invention, the bristles on the brush rod 54 are at an angle to the brush rod 54; the bristles are angled down on the brush bar 54;

during operation, the obliquely downward bristles arranged on the brush rod 54 can clean impurities on the horizontal plane of the steps in the step seat 2 through the downward bristles when the brush rod 54 is pressed down by the step valve core 3, so that the cleaning effect and efficiency are improved, the impurities are fully cleaned from the step seat 2, the reliability of the electromagnetic valve during closing is improved, and the electromagnetic valve is prevented from being leaked when closed and being failed.

As an embodiment of the present invention, a mounting shaft 512 is installed at a middle position of the upper end of the protruding column 51; the mounting shaft 512 is fixedly connected with the extending column 51; the upper end of the mounting shaft 512 is fixedly connected with a fixing plate 53; the brush rods 54 are installed at both ends of the fixing plate 53; the brush rod 54 can freely rotate on the fixed plate 53; a second gear 541 is fixedly installed at the lower end of the brush rod 54; a first gear 513 is mounted on the mounting shaft 512; the first gear 513 is located below the fixing plate 53, and the first gear 513 can rotate on the mounting shaft 512; the first gear 513 is meshed with the second gear 541; the lower end of the first gear 513 is provided with an impeller 52; the diameter of the impeller 52 is larger than that of the protruding column 51;

when the electromagnetic valve works, when the electromagnetic valve is opened, fluid in the valve body 1 flows through the electromagnetic valve, the impeller 52 on the mounting shaft 512 is impacted, the impeller 52 rotates to drive the gear I513 to rotate, the gear I513 drives the gear II 541 to rotate, the brush rod 54 is driven to rotate through the rotation of the gear II 541, meanwhile, when the electromagnetic valve is opened, the brush rod 54 is inserted into the stepped seat 2, in the rotation process of the brush rod 54, bristles on the brush rod 54 fully clean the inner wall of the stepped seat 2, impurities in the fluid are prevented from being deposited on the inner wall of the stepped seat 2, when the electromagnetic valve is closed, a gap exists between the stepped valve core 3 and the stepped seat 2, the fluid in the valve body 1 leaks from the gap, the electromagnetic valve is caused to fail, and the reliability.

In one embodiment of the present invention, a second bell mouth 121 is installed in the second installation opening 12; the outlet of the second bell mouth 121 faces away from the valve body 1; a liquid guide pipe 122 is arranged in the valve body 1; the liquid guide tube 122 is communicated with the second bell mouth 121; the outlet of the liquid guide tube 122 is aligned with the impeller 52; the single blade on the impeller 52 forms an included angle with the vertical direction;

when the electromagnetic valve is operated, when the electromagnetic valve is opened, fluid in the valve body 1 flows to the first mounting port 11 through the second mounting port 12, the fluid flows into the liquid guide tube 122 through the second bell mouth 121 and is discharged from the liquid guide tube 122 aligned with the impeller 52 at the second mounting port 12, so that the fluid impacts the impeller 52 to push the impeller 52 to rotate, so that the brush rod 54 rotates to clean the inner surface of the stepped seat 2, meanwhile, when the fluid in the valve body 1 flows to the second mounting port 12 through the first mounting port 11, the fluid enters the lower space of the valve body 1 through the stepped seat 2, because the extension rod can be inserted into the stepped seat 2, the fluid passing through the stepped seat 2 directly impacts the impeller 52 mounted on the mounting shaft 512, and because an included angle exists between a single blade of the impeller 52 and the vertical direction, when the fluid passes through the stepped seat 2 and impacts the impeller 52, the impeller 52 can be pushed to rotate, so that when the fluid in the electromagnetic valve flows in two directions, the impeller 52 can be pushed to rotate, the brush rod 54 is driven to rotate, the inner surface of the stepped seat 2 is cleaned, and the reliability of the electromagnetic valve is improved.

The specific working process is as follows:

when the valve works, the first mounting port 11 and the second mounting port 12 of the valve body 1 are respectively connected into a pipeline, then the coil 411 in the valve body 1 is controlled to work through the controller, after the coil 411 is electrified, magnetic force is generated in the fixed iron core 43 in the upper mounting seat 4, downward acting force is generated on the stepped valve core 3 below the fixed iron core 43, the stepped valve core 3 is pushed to move downwards, and therefore the stepped valve core 3 is inserted into the stepped seat 2, and the stepped seat 2 is closed; when the electromagnetic valve is closed, the stepped valve core 3 moves downwards, the magnetic conducting rod 25 at the lower end of the step is inserted into the first cavity 22, the movable plate 23 in the first cavity 22 is under the action of magnetic force conducted by the magnetic conducting rod 25, the movable plate 23 starts to move downwards under the action of magnetic force, the space of the first cavity 22, which is positioned below the movable plate 23, is compressed, the gas pressure is increased, because the second cavity is communicated with the first cavity 22, after the pressure in the first cavity 22 is increased, the pressure in the second cavity is synchronously increased, after the pressure in the second cavity is increased, the clamping column 24 in the second cavity extends out of the second cavity under the action of raised pressure, meanwhile, after the magnetic conducting rod 25 is inserted into the first cavity 22, the stepped valve core 3 is completely inserted into the stepped seat 2, and after the clamping column 24 extends out, the clamping column is inserted into the clamping groove in; when the electromagnetic valve is closed, the stepped valve core 3 descends, meanwhile, because the magnetic conducting rod 25 is fixed on the mounting frame 21, the upper end of the magnetic conducting rod 25 is inserted into the accommodating hole in the stepped valve core 3, the magnetic conducting rod 25 guides the stepped valve core 3, meanwhile, when the electromagnetic valve starts to be closed, the stepped valve core 3 is under the magnetic action of the fixed iron core 43, the stepped valve core 3 moves downwards, the downward magnetic force applied to the stepped valve core 3 is larger than the elastic force of the first spring 251 in the accommodating hole, after the stepped valve core 3 is inserted into the stepped seat 2, the upper end of the magnetic conducting rod 25 is contacted with the top wall at the upper end of the accommodating hole in the stepped valve core 3, the magnetism at the upper end of the stepped valve core 3 is transmitted into the first cavity 22 through the magnetic conducting rod 25 and interacts with the movable plate 23 in the first cavity 22 to push the movable plate 23 to move downwards, so that the, the clamping column 24 extends out and is clamped into a clamping groove on the stepped valve core 3, so that the stepped valve core 3 is clamped; when the electromagnetic valve is opened, the stepped valve core 3 rises, the transverse hole on the side surface of the stepped valve core 3 is opposite to the annular groove 42, meanwhile, when the fluid in the electromagnetic valve flows from the second mounting port 12 to the first mounting port 11, the flowing fluid impacts the stepped valve core 3 from the lower part, so that the fluid enters the first through hole 31 in the stepped valve core 3 from the first through hole 31 at the lower end of the stepped valve core 3, finally enters the annular groove 42 through the transverse hole, then enters the heat dissipation channel in the upper mounting seat 4, finally, the fluid in the heat dissipation channel is discharged from the first bell mouth 111 in the first mounting port 11, meanwhile, when the fluid in the electromagnetic valve flows from the first mounting port 11 to the first mounting port 11, the fluid meets the first bell mouth 111 in the first mounting port 11, the fluid reversely enters the heat dissipation channel through the first bell mouth 111, and then the fluid in the heat dissipation channel enters the annular groove 42, then, the oil enters the first through hole 31 in the stepped valve core 3 through a transverse hole opposite to the annular groove 42, and finally is discharged from an inlet of the first through hole 31; when the electromagnetic valve is closed, the stepped valve core 3 is inserted into the stepped seat 2, the lower end of the stepped valve core 3 extrudes the extending column 51, the extending column 51 is extruded to gradually descend, bristles on the extending column 51 clean the stepped steps in the stepped seat 2 in the descending process, and meanwhile, when the electromagnetic valve is opened, the stepped valve core 3 rises, the extending column 51 rises under the action of a spring II 511 in the cavity III and is inserted into the stepped seat 2; the brush bristles which are arranged on the brush rod 54 and are inclined downwards can clean impurities on the horizontal plane of the steps in the step seat 2 when the brush rod 54 is pressed down by the step valve core 3; when the electromagnetic valve is opened, when fluid in the valve body 1 flows, the fluid impacts the impeller 52 on the mounting shaft 512, the impeller 52 rotates to drive the gear I513 to rotate, the gear I513 drives the gear II 541 to rotate, the brush rod 54 is driven to rotate through the rotation of the gear II 541, meanwhile, when the electromagnetic valve is opened, the brush rod 54 is inserted into the stepped seat 2, and in the process of rotating the brush rod 54, bristles on the brush rod 54 clean the inner wall of the stepped seat 2; when the solenoid valve is opened, when fluid in the valve body 1 flows to the first mounting port 11 through the second mounting port 12, the fluid at the second mounting port 12 partially flows into the liquid guide tube 122 through the second bell mouth 121 and is discharged from the liquid guide tube 122 aligned with the impeller 52, so that the fluid impacts the impeller 52 to push the impeller 52 to rotate, so that the brush rod 54 rotates, meanwhile, when the fluid in the valve body 1 flows to the second mounting port 12 through the first mounting port 11, the fluid enters the lower space of the valve body 1 through the stepped seat 2, and the fluid passing through the stepped seat 2 directly impacts the impeller 52 mounted on the mounting shaft 512, so that the impeller 52 is pushed to rotate.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A two-way solenoid valve, includes valve body (1), its characterized in that: a first mounting opening (11) is formed in the left side of the valve body (1); a second mounting opening (12) is formed in the right side of the valve body (1); the first mounting port (11) and the second mounting port (12) are positioned on the same plane; a middle partition plate (13) is arranged in the valve body (1); the middle partition plate (13) divides the interior of the valve body (1) into an upper space and a lower space; the first mounting port (11) is communicated with the upper space; the second mounting port (12) is communicated with the lower space; the middle position of the middle partition plate (13) is provided with a step seat (2); the middle of the step seat (2) is communicated with the upper space and the lower space; the inner side surface of the step seat (2) is provided with steps, and the diameter of the step close to the upper part of the step seat (2) is larger; an upper mounting seat (4) is mounted on the valve body (1); the upper mounting seat (4) is positioned above the valve body (1); a coil (411) is arranged in the upper mounting seat (4); a fixed iron core (43) is arranged in the upper mounting seat (4); the fixed iron core (43) is positioned on the inner side of the coil (411); a step valve core (3) is arranged in the upper mounting seat (4); the stepped valve core (3) is positioned below the fixed iron core (43); one end of the stepped valve core (3) close to the fixed iron core (43) has magnetism; the lower end of the stepped valve core (3) is arranged in a stepped shape, and the diameter of the step close to the lower end of the stepped valve core (3) is smaller; the stepped valve core (3) is aligned to the stepped seat (2), and the stepped valve core (3) can be inserted into the stepped seat (2).

2. A two-way solenoid valve according to claim 1, wherein: a sealing ring is arranged on the stepped valve core (3); the sealing ring is positioned on the stepped step side surface at the lower end of the stepped valve core (3); the sealing ring is positioned between the stepped valve core (3) and the stepped seat (2).

3. A two-way solenoid valve according to claim 1, wherein: the lower end of the step seat (2) is provided with a mounting rack (21); the fluid can enter the step seat (2) through two sides of the mounting frame (21); a first cavity (22) is formed in the mounting frame (21); a movable plate (23) is arranged in the cavity I (22) in a sliding manner; the movable plate (23) keeps a seal with the side wall of the first cavity (22); a gas channel is formed in the side wall of the mounting frame (21); a cavity II is formed in the step seat (2); the second cavity is vertical to the central line of the step seat (2); the outlet of the second cavity is positioned at the inner side of the step seat (2); the second cavity is communicated with the gas channel; a clamping column (24) is arranged in the second cavity; the clamping column (24) freely moves in the second cavity, and sealing is kept between the clamping column (24) and the side wall of the second cavity; the lower end of the stepped valve core (3) is provided with a clamping groove; the clamping column (24) can be inserted into the clamping groove; a containing hole is formed in the stepped valve core (3); a magnetic conduction rod (25) is arranged in the accommodating hole; the lower end of the magnetic conducting rod (25) can be inserted into a first cavity (22) in the mounting frame (21); the movable plate (23) is magnetic.

4. A two-way solenoid valve according to claim 3, wherein: the lower end of the magnetic conducting rod (25) is fixed on the mounting rack (21), and the magnetic conducting rod (25) is positioned on the inner side of the step seat (2); the lower end of the magnetic conducting rod (25) is inserted into the second cavity; the central line of the magnetic conducting rod (25) is superposed with the central line of the stepped seat (2); the magnetic conduction rod (25) is inserted into the accommodating hole; a first spring (251) is installed in the accommodating hole; a cross rod is arranged on the magnetic conducting rod (25); the first spring (251) is positioned between the cross rod and the top wall of the accommodating hole; the step valve core (3) is subjected to upward elastic force of a first spring (251); after the coil (411) is electrified, the magnetic force between the fixed iron core (43) and the stepped valve core (3) is greater than the elastic force of a first spring (251); after the coil (411) is powered off, the gravity of the stepped valve core (3) is smaller than the elastic force of the spring I (251).

5. A two-way solenoid valve according to claim 1, wherein: the inner side of the upper mounting seat (4) is provided with threads; a fixed frame (41) is arranged in the upper mounting seat (4) through threads; an installation groove is formed in the side wall of the fixed frame (41), and the opening of the installation groove is vertically upward; a coil (411) is arranged in the mounting groove; the fixing frame (41) is made of plastic materials with good corrosion resistance; and a sealing plate (44) is arranged between the upper end of the fixing frame (41) and the upper mounting seat (4).

6. A two-way solenoid valve according to claim 1, wherein: a first through hole (31) is formed in the stepped valve core (3); the inlet of the first through hole (31) is positioned on the lower end face of the stepped valve core (3); the upper end of the stepped valve core (3) is provided with a transverse hole; the transverse hole is communicated with the first through hole (31), and an opening of the transverse hole is positioned on the side surface of the stepped valve core (3); an annular groove (42) is formed in the inner side wall of the upper mounting seat (4); when the stepped valve core (3) moves upwards to be opened, the transverse hole on the stepped valve core (3) is opposite to the annular groove (42); a heat dissipation channel is arranged in the side wall of the upper mounting seat (4); the inlet of the heat dissipation channel is positioned in the annular groove (42); a first bell mouth (111) is arranged in the first mounting port (11); the opening direction of the first bell mouth (111) faces to a direction far away from the valve body (1); the first bell mouth (111) is communicated with an outlet of the heat dissipation channel.

7. A two-way solenoid valve according to claim 3, wherein: a lower mounting seat (5) is mounted on the valve body (1); the lower mounting seat (5) is positioned below the valve body (1), and the lower mounting seat (5) is opposite to the upper mounting seat (4); a third cavity is formed in the lower mounting seat (5); an extension column (51) is arranged in the cavity III, and the extension column (51) can move up and down in the cavity III; a second spring (511) is arranged in the cavity III; the second spring (511) is positioned below the extending column (51); bristles are arranged on the extending columns (51); the protruding column (51) is inserted into the step seat (2); the upper end of the protruding column (51) can be contacted with the lower end of the stepped valve core (3).

8. A two-way solenoid valve according to claim 7, wherein: the upper end of the extending column (51) is provided with two brush rods (54); the brush rod (54) is provided with brush hair; the brush rod (54) extends into the ladder seat (2) from two sides of the mounting frame (21); the upper end of the brush rod (54) is contacted with the lower end of the stepped valve core (3).

9. A two-way solenoid valve according to claim 8, wherein: an included angle is formed between the bristles on the brush rod (54) and the brush rod (54); the bristles are angled down on the brush bar (54).

10. A two-way solenoid valve according to claim 1, wherein: a mounting shaft (512) is mounted in the middle of the upper end of the extending column (51); the mounting shaft (512) is fixedly connected with the extending column (51); the upper end of the mounting shaft (512) is fixedly connected with a fixing plate (53); the brush rods (54) are arranged at two ends of the fixing plate (53); the brush rod (54) can freely rotate on the fixed plate (53); a second gear (541) is fixedly arranged at the lower end of the brush rod (54); a first gear (513) is mounted on the mounting shaft (512); the first gear (513) is positioned below the fixing plate (53), and the first gear (513) can rotate on the mounting shaft (512); the first gear (513) and the second gear (541) are meshed with each other; an impeller (52) is mounted at the lower end of the first gear (513); the impeller (52) has a diameter larger than that of the projecting column (51).

11. A two-way solenoid valve according to claim 10, wherein: a second bell mouth (121) is arranged in the second mounting hole (12); the outlet of the second bell mouth (121) faces to the direction far away from the valve body (1); a liquid guide pipe (122) is arranged in the valve body (1); the liquid guide pipe (122) is communicated with the second bell mouth (121); the outlet of the liquid guide pipe (122) is aligned with the impeller (52); the single blade on the impeller (52) forms an included angle with the vertical direction.