1. A solenoid valve convenient for replacing an elastic part comprises a valve body (1) and a valve core assembly (4) and is characterized in that,

the valve body (1) is sequentially provided with an air inlet hole (1a), a working hole (1b) and an exhaust hole (1c) from top to bottom, a cavity (2) used for communicating the air inlet hole (1a), the working hole (1b) and the exhaust hole (1c) is arranged in the valve body (1), the cavity (2) comprises a first cavity (2a) communicated with the air inlet hole (1a), a second cavity (2b) communicated with the working hole (1b) and a third cavity (2c) communicated with the exhaust hole (1c), and a mounting groove which is positioned above the cavity (2) and used for mounting a valve core assembly (4) is also arranged in the valve body (1);

the valve core assembly (4) comprises a first valve core (4a) arranged in the mounting groove and a second valve core (4b) arranged at the bottom of the first valve core (4a), the first valve core (4a) is in sliding fit with the mounting groove, and the second valve core (4b) is fixedly connected to the bottom end of the first valve core (4 a);

the electromagnetic valve further comprises an elastic mechanism (5) enabling the first valve core (4a) to always have a trend of moving towards the communication position of the first cavity (2a) and the second cavity (2b), the elastic mechanism (5) comprises a connecting rod (5a) detachably connected with the top of the valve body (1), an expansion rod (5c) is arranged at the bottom end of the connecting rod (5a), the expansion rod (5c) is in sliding fit with the connecting rod, a spring (5b) is further arranged in the expansion rod (5c), one end of the spring (5b) abuts against the connecting rod, the other end of the spring (5b) abuts against the expansion rod (5c), and when the first valve core (4a) is in contact with the communication position of the first cavity (2a) and the second cavity (2b), the first cavity (2a) and the second cavity (2b) are blocked;

the electromagnetic valve further comprises an electromagnetic assembly (3) and a power supply, after the electromagnetic assembly (3) is communicated with the power supply, the second valve core (4b) overcomes the elastic force of the elastic mechanism (5) and has a trend of moving towards the communication position of the second cavity (2b) and the third cavity (2c), and when the second valve core (4b) is in contact with the communication position of the second cavity (2b) and the third cavity (2c), the communication position of the second cavity (2b) and the third cavity (2c) is blocked.

2. The electromagnetic valve convenient for replacing the elastic piece as claimed in claim 1, wherein the connecting rod (5a) is provided with a first thread (5a1) near the top end, the top end of the valve body (1) is provided with an adjusting interface (1d), the adjusting interface (1d) is provided with a first threaded through hole (1d1) which is in threaded fit with the first thread (5a1), and the top surface of the connecting rod (5a) is further provided with a cross groove (5a 2).

3. A solenoid valve for facilitating the replacement of an elastic member according to claim 2, wherein the adjusting port (1d) is transversely provided with a second threaded through hole (1d2) communicating with the first threaded through hole (1d1), the solenoid valve further comprises a set screw (6) disposed in the second threaded through hole (1d2), and the set screw (6) is in threaded connection with the second threaded through hole (1d 2).

4. A solenoid valve for facilitating the replacement of elastic members according to claim 1, characterized in that the electromagnetic assembly (3) comprises,

the static iron core (3a), the static iron core (3a) is fixedly arranged at the top end of the mounting groove;

the coil (3b), the coil (3b) surrounds and sets up in the outside of the static iron core (3 a);

the movable iron core (3c) is fixedly arranged at the top end of the first valve core (4 a).

5. A solenoid valve for facilitating the replacement of elastomeric elements according to claim 4, characterised in that the solenoid assembly (3) further comprises a coil interface (3d) provided on the valve body (1), the coil interface (3d) comprising,

the first wiring hole (3d1) is arranged on the coil interface (3d), and the first wiring hole (3d1) is connected with one end of the coil (3 b);

the second wiring hole (3d2) is provided on the coil interface (3d), and the second wiring hole (3d2) is connected to the other end of the coil (3 b).

6. A solenoid valve for facilitating the replacement of an elastic member according to claim 1, wherein the solenoid valve further comprises a sealing assembly (7), the sealing assembly (7) comprises a first sealing member (7a) disposed at a contact position where the first valve core (4a) communicates with the first chamber (2a) and the second chamber (2b), and the first sealing member (7a) is fixedly connected with the first valve core (4 a).

7. A solenoid valve for facilitating the replacement of an elastic member according to claim 1, wherein the sealing assembly (7) further comprises a second sealing member (7b) disposed at a position where the second valve element (4b) contacts the third chamber (2c) of the second chamber (2b), and the second sealing member (7b) is fixedly connected to the second valve element (4 b).

8. A solenoid valve for facilitating the replacement of an elastic member according to claim 1, wherein the solenoid valve further comprises a guide ring (8) disposed on the mounting groove at a position where the mounting groove contacts the first valve core (4a), the guide ring (8) is fixedly connected to the mounting groove, and the guide ring (8) is slidably connected to the first valve core (4 a).

9. A solenoid valve for facilitating the replacement of an elastomeric member according to claim 3 wherein the solenoid valve further comprises heat dissipating means (9), the heat dissipating means (9) comprising,

a source of oil;

the first oil way connector (9a), the first oil way connector (9a) is arranged on the upper surface of the valve body (1), and the first oil way connector (9a) is communicated with an oil source;

the second oil way connector (9b), the second oil way connector (9b) is arranged on the upper surface of the valve body (1);

the heat dissipation oil way (9c) is arranged in the valve body (1), the heat dissipation oil way (9c) is spirally arranged on the outer side of the coil (3b) along the axis of the coil (3b), one end of the heat dissipation oil way (9c) is communicated with the first oil way connector (9a), and the other end of the heat dissipation oil way (9c) is communicated with the second oil way connector (9 b);

and the input end of the oil temperature cooler is communicated with the second oil way interface (9b), and the output end of the oil temperature cooler is communicated with an oil source.

10. A solenoid valve for facilitating the replacement of an elastic member according to claim 1, wherein the connecting rod (5a) further comprises a pressure reducing line (5a3) disposed inside the connecting rod (5a), one end of the pressure reducing line (5a3) is communicated with a first air hole (5a4) disposed at the top end of the connecting rod (5a), and the other end of the pressure reducing line (5a3) is communicated with a second air hole (5a5) disposed in the mounting groove of the connecting rod (5 a).

Background

The electromagnetic valve is industrial equipment controlled by electromagnetism, is an automatic basic element for controlling fluid, belongs to an actuator, is powered on by the electromagnetic valve, utilizes the electromagnetic force to pull the valve core to move upwards by the valve rod, thereby opening the valve port, pushes the valve core to move downwards by the elastic action of the spring through power failure, and closes the valve port to control the on-off of the valve.

However, the use of solenoid valve can frequent compression spring, and after a period of time, the elastic coefficient of spring can reduce, needs to change the spring, needs to dismantle whole valve body when current solenoid valve changes the spring to cut off the interface channel of valve body both sides, prevent that the medium from flowing out, make the change of spring more troublesome.

Disclosure of Invention

For solving above-mentioned technical problem, provide a solenoid valve convenient to change elastic component, this application makes the user need not to unpack the solenoid valve apart when the solenoid valve switching-over frequency that the solenoid valve that leads to because of the reduction of spring elastic coefficient reduces through convenient to detach's elastic component, need not to change the elastic component under the condition with the passageway shutoff of valve body intercommunication, has reduced the replacement cost.

In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:

the application provides a solenoid valve convenient for replacing an elastic part, which comprises a valve body and a valve core assembly,

the valve body is sequentially provided with an air inlet hole, a working hole and an exhaust hole from top to bottom, a cavity for communicating the air inlet hole, the working hole and the exhaust hole is arranged in the valve body, the cavity comprises a first cavity communicated with the air inlet hole, a second cavity communicated with the working hole and a third cavity communicated with the exhaust hole, and a mounting groove which is positioned above the cavity and used for mounting the valve core assembly is also arranged in the valve body;

the valve core assembly comprises a first valve core arranged in the mounting groove and a second valve core arranged at the bottom of the first valve core, the first valve core is in sliding fit with the mounting groove, and the second valve core is fixedly connected to the bottom end of the first valve core;

the electromagnetic valve also comprises an elastic mechanism which enables the first valve core to always have a trend of moving towards the communication position of the first cavity and the second cavity, the elastic mechanism comprises a connecting rod which is detachably connected with the top of the valve body, a telescopic rod is arranged at the bottom end of the connecting rod, the telescopic rod is in sliding fit with the connecting rod, a spring is further arranged in the telescopic rod, one end of the spring abuts against the connecting rod, the other end of the spring abuts against the telescopic rod, and when the first valve core is in contact with the communication position of the first cavity and the second cavity, the first cavity and the second cavity are blocked;

the electromagnetic valve further comprises an electromagnetic assembly and a power supply, after the electromagnetic assembly is communicated with the power supply, the second valve core overcomes the elastic force of the elastic mechanism and has a tendency of moving towards the communication position of the third cavity of the second cavity, and when the second valve core is contacted with the communication position of the third cavity of the second cavity, the communication position of the third cavity of the second cavity is blocked.

Preferably, the connecting rod is provided with a first thread near the top end, the top end of the valve body is provided with an adjusting interface, the adjusting interface is provided with a first thread through hole matched with the first thread through hole, and the top surface of the connecting rod is also provided with a cross groove.

Preferably, the adjusting interface is transversely provided with a second threaded through hole communicated with the first threaded through hole, the electromagnetic valve further comprises a set screw arranged in the second threaded through hole, and the set screw is in threaded connection with the second threaded through hole.

Preferably, the electromagnetic assembly comprises, in combination,

the static iron core is fixedly arranged at the top end of the mounting groove;

the coil is arranged on the outer side of the static iron core in a surrounding manner;

and the movable iron core is fixedly arranged at the top end of the first valve core.

Preferably, the solenoid assembly further comprises a coil interface disposed on the valve body, the coil interface comprising,

the first wiring hole is arranged on the coil interface and connected with one end of the coil;

the second wiring hole is arranged on the coil interface and connected with the other end of the coil.

Preferably, the solenoid valve further comprises a sealing assembly, the sealing assembly comprises a first sealing element arranged at a contact position where the first valve core is communicated with the second cavity of the first cavity, and the first sealing element is fixedly connected with the first valve core.

Preferably, the seal assembly further comprises a second seal disposed at a position where the second valve spool contacts the third chamber of the second chamber, and the second seal is fixedly connected with the second valve spool.

Preferably, the solenoid valve further comprises a guide ring arranged on the mounting groove and located at a contact position of the mounting groove and the first valve core, the guide ring is fixedly connected with the mounting groove, and the guide ring is in sliding connection with the first valve core.

Preferably, the electromagnetic valve further comprises a heat dissipation mechanism, the heat dissipation mechanism comprises,

a source of oil;

the first oil way connector is arranged on the upper surface of the valve body and is communicated with an oil source;

the second oil way connector is arranged on the upper surface of the valve body;

the heat dissipation oil way is arranged in the valve body, the heat dissipation oil way is spirally arranged on the outer side of the coil along the axis of the coil, one end of the heat dissipation oil way is communicated with the first oil way interface, and the other end of the heat dissipation oil way is communicated with the second oil way interface;

and the input end of the oil temperature cooler is communicated with the second oil way interface, and the output end of the oil temperature cooler is communicated with an oil source.

Preferably, the connecting rod is still including setting up the pressure reduction pipeline in the connecting rod inside, the one end and the first gas pocket intercommunication that sets up on the connecting rod top of pressure reduction pipeline, the other end and the setting of pressure reduction pipeline are located the mounting groove second gas pocket intercommunication at the connecting rod.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, through the valve core assembly detachably connected with the valve body, the spring elastic coefficient of the electromagnetic valve is reduced due to the fact that the spring is compressed for a long time, when the reversing speed of the electromagnetic valve is reduced due to reduction of the reversing frequency, the valve core assembly is only required to be detached from the valve body, a new valve core assembly is installed, the electromagnetic valve is not required to be detached, and the reversing frequency and the speed of the electromagnetic valve are recovered to a set value under the condition that a pipeline communicated with the air inlet hole, the working hole and the exhaust hole is not required to be plugged;

2. according to the invention, through the matching of the first threads and the first thread through holes, a user can insert a cross screwdriver into the cross groove to rotate the first threads to adjust the distance between the connecting rod and the telescopic rod, so that the initial deformation of the spring is changed, the elasticity of the elastic mechanism to the first valve core is adjusted, the reversing frequency and the reversing speed of the electromagnetic valve can be recovered without replacing the elastic mechanism when the elastic coefficient of the spring is reduced a little, the service life of the elastic mechanism is prolonged, and the replacement cost caused by the reduction of the elastic coefficient of the spring is reduced again;

3. according to the invention, through the matching of the set screw and the second threaded through hole, the connecting rod is fixed to be incapable of rotating when the electromagnetic valve works, and when a user needs to rotate the connecting rod to change the initial deformation of the spring or disassemble the elastic mechanism from the adjusting interface, the fixing of the connecting rod is released, so that the connecting rod can be recovered to rotate;

4. the coil is matched with the static iron core, the coil and the movable iron core, so that the second valve core has the trend of moving towards the communication position of the third cavity of the second cavity when the coil is electrified;

5. according to the invention, a user can conveniently communicate the municipal power supply with the electromagnetic assembly through the coil interface;

6. according to the invention, the impact of the first valve core when the first valve core is contacted with the communication position of the second cavity of the first cavity is reduced through the first sealing element, the abrasion of the first valve core and the valve body is reduced, the service life of the valve body is prolonged, and when the first valve core is contacted with the communication position of the second cavity of the first cavity, the first valve core can more completely block the communication position of the second cavity of the first cavity, so that the sealing property of the valve body is improved;

7. according to the invention, the impact of the second valve core when the second valve core is contacted with the communication position of the third cavity of the second cavity is reduced through the second sealing element, the abrasion of the first valve core and the cavity is reduced, the service life of the Zengjiaqi is prolonged, and when the second valve core is contacted with the communication position of the third cavity of the second cavity, the sealing performance of the second valve core on the communication position of the third cavity of the second cavity is more completely improved;

8. the invention avoids the direct friction between the first valve core and the mounting groove when the first valve core slides in the mounting groove through the guide ring, reduces the abrasion of the electromagnetic valve to the first valve core and the mounting groove in daily use, and prolongs the practical service life of the electromagnetic valve;

9. according to the electromagnetic valve, the heat generated by the coil when the electromagnetic valve works is effectively dissipated through the heat dissipation mechanism, so that the adverse effect of heat accumulation generated by the coil on the electromagnetic valve is reduced;

10. according to the invention, the cavity between the movable iron core and the static iron core is communicated with the outside of the electromagnetic valve through the pressure reducing pipeline, the first air hole and the second air hole which are arranged on the connecting rod, so that the phenomenon that the cavity is compressed when the movable iron core is driven by the first valve core to move towards the static iron core, and the trend that the second valve core moves towards the third cavity communication position of the second cavity due to the influence of the increase of air pressure in the cavity is avoided, and the second valve core cannot completely block the third cavity communication position of the second cavity.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a first perspective view of the present invention;

FIG. 3 is a second perspective view of the present invention;

FIG. 4 is a side view of the present invention;

FIG. 5 is a cross-sectional view at section A-A of FIG. 4;

FIG. 6 is a top view of the present invention;

FIG. 7 is a cross-sectional view taken at section B-B of FIG. 6;

FIG. 8 is a perspective view of the spring mechanism of the present invention;

FIG. 9 is a top view of the spring mechanism of the present invention;

FIG. 10 is a cross-sectional view at section C-C of FIG. 9;

the reference numbers in the figures are:

1-a valve body; 1 a-an air intake; 1 b-a working hole; 1 c-a vent hole; 1 d-an adjustment interface; 1d1 — first threaded through hole; 1d2 — second threaded through hole;

2-a cavity; 2 a-a first cavity; 2 b-a second cavity; 2 c-a third chamber;

3-an electromagnetic assembly; 3 a-a stationary core; 3 b-a coil; 3 c-a movable iron core; 3 d-coil interface; 3d1 — first wiring hole; 3d2 — second wiring hole;

4-a valve core assembly; 4 a-a first valve spool; 4 b-a second valve spool;

5-an elastic mechanism; 5 a-a connecting rod; 5a1 — first thread; 5a 2-cross slot; 5a 3-pressure relief line; 5a4 — first vent; 5a5 — second vent; 5 b-a spring; 5 c-a telescopic rod;

6-set screw;

7-a sealing assembly; 7 a-a first seal; 7 b-a second seal;

8-a guide ring;

9-a heat dissipation mechanism; 9 a-a first oil line interface; 9 b-a second oil line interface; 9 c-radiating oil path.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

In order to solve the technical problem that the reversing frequency of the electromagnetic valve is reduced due to the reduction of the elastic coefficient of the spring 5b of the electromagnetic valve after long-term use, as shown in fig. 1-10, the following technical scheme is provided:

a solenoid valve for replacing elastic parts conveniently comprises a valve body 10 and a valve core assembly 40,

the valve body 10 is sequentially provided with an air inlet 1a, a working hole 1b and an exhaust hole 1c from top to bottom, a cavity 20 for communicating the air inlet 1a, the working hole 1b and the exhaust hole 1c is arranged in the valve body 10, the cavity 20 comprises a first cavity 2a communicated with the air inlet 1a, a second cavity 2b communicated with the working hole 1b and a third cavity 2c communicated with the exhaust hole 1c, and a mounting groove which is positioned above the cavity 20 and used for mounting the valve core assembly 40 is also arranged in the valve body 10;

the valve core assembly 40 comprises a first valve core 4a arranged in the mounting groove and a second valve core 4b arranged at the bottom of the first valve core 4a, the first valve core 4a is in sliding fit with the mounting groove, and the second valve core 4b is fixedly connected to the bottom end of the first valve core 4 a;

the electromagnetic valve further comprises an elastic mechanism 50 which enables the first valve core 4a to always have a trend of moving towards a communication position of the first cavity 2a and the second cavity 2b, the elastic mechanism 50 comprises a connecting rod 5a0 detachably connected with the top of the valve body 10, an expansion rod 5c is arranged at the bottom end of the connecting rod 5a0, the expansion rod 5c is in sliding fit with the connecting rod, a spring 5b is further arranged in the expansion rod 5c, one end of the spring 5b abuts against the connecting rod, the other end of the spring 5b abuts against the expansion rod 5c, and when the first valve core 4a contacts with the communication position of the first cavity 2a and the second cavity 2b, the first cavity 2a and the second cavity 2b are blocked;

the solenoid valve further comprises an electromagnetic assembly 30 and a power source (not shown), after the electromagnetic assembly 30 is connected to the power source, the second valve core 4b overcomes the elastic force of the elastic mechanism 50 and has a tendency to move towards the connection between the second chamber 2b and the third chamber 2c, and when the second valve core 4b contacts the connection between the second chamber 2b and the third chamber 2c, the connection between the second chamber 2b and the third chamber 2c is blocked.

Specifically, when the power source is not connected to the solenoid assembly 30, the solenoid assembly 30 does not make the valve core assembly 40 have a tendency of moving toward the connection position of the second chamber 2b and the third chamber 2c, the elastic mechanism 50 makes the first valve core 4a always have a tendency of moving toward the connection position of the first chamber 2a and the second chamber 2b, when the first valve core 4a contacts the connection position of the first chamber 2a and the second chamber 2b, the connection position of the first chamber 2a and the second chamber 2b is blocked, the working hole 1b is not connected to the air inlet hole 1a, and the air inlet hole 1a is connected to the working hole 1 b. When the power supply is communicated with the electromagnetic assembly 30, the electromagnetic assembly 30 generates electromagnetic suction force to the valve core assembly 40, the electromagnetic suction force is larger than elastic thrust force of the elastic mechanism 50 to the valve core assembly 40, the electromagnetic assembly 30 enables the valve core assembly 40 to have a trend of moving towards the communication position of the second cavity 2b and the third cavity 2c, after the second valve core 4b contacts the communication position of the second cavity 2b and the third cavity 2c, the communication position of the second cavity 2b and the third cavity 2c is blocked, the working hole 1b is not communicated with the exhaust hole 1c, and the working hole 1b is communicated with the air inlet hole 1 a. Commutation of the solenoid valve is achieved by switching between a connected state and a disconnected state of the power supply and the solenoid assembly 30. After the electromagnetic valve is used for a long time, the elasticity of the spring 5b to the first valve core 4a is reduced due to the reduction of the elasticity coefficient of long-term compression of the spring 5b, the time for the spring 5b to reach the communication part of the first cavity 2a and the second cavity 2b is prolonged due to the reduction of the elasticity, the frequency and the speed for switching the communication of the electromagnetic valve from the communication of the work hole 1a of the air inlet hole 1a to the communication of the work hole 1b and the exhaust hole 1c of the work hole 1b are reduced, the elastic mechanism 50 is detachably connected with the valve body 10, the whole elastic mechanism 50 can be detached from the valve body 10, a new elastic mechanism 50 is installed in the valve body 10 to recover the reversing frequency of the electromagnetic valve, the electromagnetic valve does not need to be detached, pipelines communicated with the air inlet hole 1a, the work hole 1b and the exhaust hole 1c are not needed to be plugged, the elastic mechanism 50 is directly detached from the valve body 10 to be replaced to recover the reversing frequency, and the service life of the electromagnetic valve is prolonged, the cost of replacing the resilient mechanism 50 is reduced.

Further:

in order to solve the technical problem of how to realize the detachable connection of the connecting rod 5a0 and the valve body 10, as shown in fig. 8-10, the following technical solutions are provided:

the connecting rod 5a0 is provided with a first thread 5a1 near the top end, the top end of the valve body 10 is provided with an adjusting interface 1d0, the adjusting interface 1d0 is provided with a first thread through hole 1d1 in threaded fit with the first thread 5a1, and the top surface of the connecting rod 5a0 is also provided with a cross-shaped groove 5a 2.

Specifically, the adjusting interface 1d0 is used for connecting the valve body 10 with the connecting rod 5a0, the connecting rod 5a0 is vertically inserted into the adjusting interface 1d0, and the connecting rod 5a0 is in threaded connection with the valve body 10 under the matching of the first threads 5a1 and the first threaded through hole 1d 1. After the solenoid valve is used for a long time, after the reversing speed of the solenoid valve is reduced due to the reduction of the long-term compression elastic coefficient of the spring 5b, a cross screwdriver can be inserted into the cross groove 5a2, the screwdriver is rotated to drive the connecting rod 5a0 to rotate, the distance between the connecting rod 5a0 and the telescopic rod 5c is shortened to compress the spring 5b, the initial deformation x of the spring 5b is increased according to the Hooke's law F-k.x, the elastic force F of the spring is increased, the reversing frequency of the solenoid valve is recovered to a set value, and the reversing speed of the solenoid valve is increased. When the initial deformation amount x of the spring 5b cannot be increased, the cross screwdriver can be used to insert into the cross slot 5a2 to detach the elastic mechanism 50 from the solenoid valve, and a new elastic mechanism 50 can be inserted into the solenoid valve through the adjusting interface 1d0 to restore the normal reversing frequency of the solenoid valve. The cross screwdriver is connected into the cross groove 5a2 outside the electromagnetic valve to shorten the distance between the first thread 5a1 and the telescopic rod 5c, the compression spring increases the initial deformation quantity of the spring 5b and restores the spring elasticity to restore the valve changing speed of the electromagnetic valve, the frequency of replacing the elastic mechanism 50 of the electromagnetic valve is reduced, and the cost is saved.

Further:

in order to solve the technical problem that the connecting rod 5a0 screwed on the valve body 10 in the use process of the electromagnetic valve may slide up and down, as shown in the set screws 6-7, the following technical scheme is provided:

the adjusting interface 1d0 is transversely provided with a second threaded through hole 1d2 communicated with the first threaded through hole 1d1, the solenoid valve further comprises a set screw 6 arranged in the second threaded through hole 1d2, and the set screw 6 is in threaded connection with the second threaded through hole 1d 2.

Specifically, when the connecting rod 5a0 needs to be fixed on the valve body 10, the set screw 6 can be inserted into the second threaded through hole 1d2 until the output end of the set screw 6 abuts against the connecting rod 5a0, so that the connecting rod 5a0 cannot rotate, and when the elastic mechanism 50 needs to be detached from the valve body 10 or the distance between the connecting rod 5a0 and the telescopic rod 5c needs to be adjusted to change the initial deformation amount of the spring 5b, the set screw 6 can be moved out of the second threaded through hole 1d2, so that the connecting rod 5a0 can rotate.

Further:

in order to solve the technical problem of how to realize the trend that the second valve spool 4b moves towards the communication position of the second cavity 2b and the third cavity 2c after the electromagnetic assembly 30 is electrified, as shown in the set screws 6-7, the following technical scheme is provided:

the electromagnetic assembly 30 is comprised of an electromagnetic assembly,

the static iron core 3a is fixedly arranged at the top end of the mounting groove;

the coil 3b is arranged on the outer side of the static iron core 3a in a surrounding mode;

and the movable iron core 3c is fixedly arranged at the top end of the first valve core 4 a.

Specifically, coil 3b makes quiet iron core 3a have magnetism after with the power intercommunication, and quiet iron core 3a attracts after having magnetism to move iron core 3c to quiet iron core 3a, and quiet iron core 3a drives first case 4a of fixed connection with it and moves to quiet iron core 3a, and first case 4a drives second case 4b of fixed connection with it and moves to second chamber 2b third chamber 2c intercommunication department. When the coil 3b is not connected with the power supply, the magnetic force of the static iron core 3a is removed, the movable iron core 3c is not attracted to move towards the static iron core 3a any more, and the second valve core 4b does not have the tendency of moving towards the connection position of the second cavity 2b and the third cavity 2 c. Thereby enabling a determination of whether the second spool 4b has a tendency to move toward communication with the second chamber 2b and the third chamber 2c by disconnecting or connecting the solenoid assembly 30 from the power source.

Further:

in order to solve the technical problem of how to communicate the coil 3b with the power supply, as shown in fig. 1-2 and 4, the following technical solutions are provided:

the solenoid assembly 30 further includes a coil interface 3d0 disposed on the valve body 10, the coil interface 3d0 including,

a first wiring hole 3d1 is provided on the coil socket 3d0, the first wiring hole 3d1 being connected to one end of the coil 3 b;

a second wiring hole 3d2 is provided on the coil socket 3d0, and the second wiring hole 3d2 is connected to the other end of the coil 3 b.

Specifically, the power supply is municipal 220V alternating current, the first wiring hole 3d1 is used for connecting with live wire, and the second wiring hole 3d2 is used for connecting with neutral wire.

Further:

in order to solve the technical problem of how to realize the first valve core 4a and block the communication position of the first cavity 2a and the second cavity 2b when the communication position of the first cavity 2a and the second cavity 2b is contacted, as shown in set screws 6-7, the following technical scheme is provided:

the solenoid valve further comprises a sealing assembly 70, wherein the sealing assembly 70 comprises a first sealing element 7a arranged at a contact position where the first valve core 4a is communicated with the first cavity 2a and the second cavity 2b, and the first sealing element 7a is fixedly connected with the first valve core 4 a.

Specifically, the first sealing element 7a is an annular rubber ring, the first sealing element 7a is used for reducing impact force at the communication position of the first valve core 4a and the first cavity 2a and the second cavity 2b when the communication position of the first valve core 4a and the first cavity 2a and the second cavity 2b is contacted, the first valve core 4a is protected from being damaged when being contacted with the valve body 10, the first sealing element 7a made of rubber increases the sealing performance when the communication position of the first valve core 4a and the first cavity 2a and the second cavity 2b is contacted, and the first valve core 4a blocks the communication position of the first cavity 2a and the second cavity 2b when the communication position of the first valve core 4a and the first cavity 2a and the second cavity 2b is contacted.

Further:

in order to solve the technical problem of how to realize the sealing of the communication part of the second cavity 2b and the third cavity 2c when the second valve spool 4b contacts the communication part of the second cavity 2b and the third cavity 2c, as shown in fig. 6-7, the following technical solutions are provided:

the seal assembly 70 further includes a second seal 7b disposed at a location where the second valve spool 4b contacts the third chamber 2c of the second chamber 2b, the second seal 7b being fixedly coupled to the second valve spool 4 b.

Specifically, the second sealing element 7b is an annular rubber ring, the second sealing element 7b is used for reducing impact force at the communication position between the second valve spool 4b and the third cavity 2c of the second cavity 2b when the second valve spool 4b contacts the communication position between the second valve spool 4b and the third cavity 2c of the second cavity 2b, and protecting the second valve spool 4b from being damaged when contacting the valve body 10, and the second sealing element 7b made of rubber increases the sealing performance of the communication position between the second valve spool 4b and the third cavity 2c of the second cavity 2b, so that the communication position between the second valve spool 4b and the third cavity 2c of the second cavity 2b is blocked when the second valve spool 4b contacts the communication position between the second valve spool 4b and the third cavity 2c of the second cavity 2 b.

Further:

in order to solve the technical problem of reducing the abrasion between the first valve core 4a and the mounting groove when the first valve core 4a slides in the mounting groove, as shown in fig. 6-7, the following technical scheme is provided:

the electromagnetic valve further comprises a guide ring 8 which is arranged on the mounting groove and is positioned at the contact position of the mounting groove and the first valve core 4a, the guide ring 8 is fixedly connected with the mounting groove, and the guide ring 8 is connected with the first valve core 4a in a sliding mode.

Specifically, the guide ring 8 is used for avoiding that the first valve core 4a directly contacts with the valve body 10 to rub and cause abrasion when sliding in the installation groove, the guide ring 8 has good wear resistance and sealing performance, the sealing performance between the first valve core 4a and the installation groove is ensured while the first valve core 4a is supported to slide in the installation groove to reduce abrasion, and fluid in the first cavity 2a is prevented from flowing into the space between the static iron core 3a and the coil 3b through a gap between the first valve core 4a and the installation groove.

Further:

in order to solve the technical problem that the coil 3b has high heat emission under the long-time power-on state and cannot effectively dissipate heat to damage the electromagnetic valve, the following technical scheme is provided as shown in fig. 6-7:

the solenoid valve further comprises a heat dissipation mechanism 90, the heat dissipation mechanism 90 comprising,

an oil source (not shown);

the first oil way connector 9a is arranged on the upper surface of the valve body 10, and the first oil way connector 9a is communicated with an oil source;

a second oil passage port 9b, the second oil passage port 9b being provided on the upper surface of the valve body 10;

the heat dissipation oil path 9c is arranged in the valve body 10, the heat dissipation oil path 9c is spirally arranged on the outer side of the coil 3b along the axis of the coil 3b, one end of the heat dissipation oil path 9c is communicated with the first oil path connector 9a, and the other end of the heat dissipation oil path 9c is communicated with the second oil path connector 9 b;

and an oil temperature cooler (not shown), an input end of the oil temperature cooler is communicated with the second oil passage interface 9b, and an output end of the oil temperature cooler is communicated with an oil source.

Specifically, when the electromagnetic valve works, the oil source is input into the heat radiation oil path 9c through the first oil path interface 9a, the oil absorbs heat generated by the coil 3b when passing through the heat radiation oil path 9c, the oil flows out of the electromagnetic valve from the second oil path interface 9b after passing through the heat radiation oil path 9c, and flows back to the oil source after being radiated by the oil temperature cooler, the electromagnetic valve is circularly radiated, and the influence of heat generated by the coil 3b on the electromagnetic valve is reduced.

Further:

in order to solve the problem that a cavity for the first valve core 4a to slide is reserved in the installation groove and is not communicated with the outside, when the first valve core 4a moves towards the static iron core 3a under the driving of the movable iron core 3c, the cavity is compressed, the air pressure is increased, the trend that the first valve core 4a moves towards the static iron core 3a is prevented, and the technical problem of plugging at the communication position of the third cavity 2c of the second cavity 2b is influenced, as shown in fig. 9-10, the following technical scheme is provided:

the connecting rod 5a0 further comprises a pressure reducing pipeline 5a3 arranged inside the connecting rod 5a0, one end of the pressure reducing pipeline 5a3 is communicated with a first air hole 5a4 arranged at the top end of the connecting rod 5a0, and the other end of the pressure reducing pipeline 5a3 is communicated with a second air hole 5a5 arranged in the connecting rod 5a0 and positioned in the mounting groove.

Specifically, the solenoid valve communicates the chamber with the outside of the solenoid valve through the first air hole 5a4, the pressure reducing pipeline 5a3 and the second air hole 5a5 on the connecting rod 5a0, so that when the size of the chamber of the first valve core 4a is changed, the air pressure in the chamber is always kept the same as the outside, and the tendency that the air pressure in the chamber is increased to prevent the second valve core 4b from moving to the communication position of the third chamber 2c of the second chamber 2b due to the compression of the chamber is avoided.

This application makes the user need not to dismantle the solenoid valve alright change the switching-over frequency and the speed that make the solenoid valve and obtain recovering through the elastic mechanism 50 that is convenient for change, has increased the life of solenoid valve, has reduced the replacement cost of solenoid valve. The cooperation between the connecting rod 5a0 and the adjusting interface 1d0 enables a user to adjust the initial deformation amount of the spring 5b by inserting the phillips screwdriver into the phillips 5a2 to rotate the connecting rod 5a0, and adjust the elastic force of the elastic mechanism 50 on the first valve core 4a, so that the reversing speed and the frequency of the electromagnetic valve can be recovered without replacing the elastic mechanism 50 under the condition of not reducing the elastic coefficient much. The impact wear of the valve core assembly 40 when contacting the valve body 10 is reduced by the first sealing piece 7a arranged on the first valve core 4a and the second sealing piece 7b arranged on the second valve core 4b, the sealing performance of the valve core assembly 40 on the communication part of the first cavity 2a and the second cavity 2b and the communication part of the second cavity 2b and the third cavity 2c is increased, the wear between the valve core assembly 40 and the valve body 10 is reduced by the guide ring 8, the elastic mechanism 50 is fixedly connected when the electromagnetic valve works through the matching of the set screw 6 and the second threaded through hole 1d2, the elastic mechanism is conveniently detached from the valve body 10 when the elastic force needs to be adjusted or the valve core assembly 40 needs to be replaced, the heating problem of the coil 3b is solved through the heat dissipation mechanism 90, and the service life of the electromagnetic valve is prolonged again.

The foregoing shows and describes the general principles, essential features, and advantages of the 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 merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the 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.