A bidirectional control solenoid valve

Abstract

The application relates to a bidirectional control electromagnetic valve, belonging to the technical field of electromagnetic valves, which comprises a main valve body, a valve cylinder connected to one side of the main valve body through a sealing connecting ring, an oil inlet arranged on one side of the middle part of the valve cylinder, a first oil outlet arranged on the side, away from the main valve body, of the oil inlet, a second oil outlet arranged on the side, away from the first oil outlet, of the oil inlet, an oil return port arranged at the end of the valve cylinder, a valve core arranged in the main valve body, the valve core being movably connected with the main valve body, a first valve block connected to one end of the valve core and extending into the valve cylinder, the outer wall of the first valve block being in abutment with the first oil outlet, and a second valve block arranged on one side of the first valve block; the bidirectional control of the electromagnetic valve is realized through the interaction of a first electromagnet and a second electromagnet, the overall volume of the electromagnetic valve is reduced through integrated design, and the electromagnetic valve is suitable for being installed in a narrow space.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electromagnetic valves, in particular to a bidirectional control electromagnetic valve. BACKGROUND

[0002] An electromagnetic valve is a kind of switch device for controlling fluid by using electromagnetic principle, which is widely used in industrial automatic control system. Its core component is an electromagnet, which is activated by applying current to generate a magnetic field. When the electromagnet is energized, the generated magnetic field will cause the spool to displace, thereby changing the opening state of the valve and further controlling the on-off of the fluid. This way of controlling the displacement of the spool by changing the magnetic field realizes the precise control of the fluid.

[0003] In the prior art, a kind of electromagnetic valve is disclosed in Chinese patent with publication number CN202629267U, which comprises a valve body, a diaphragm, an isolating sleeve, a pressing plate, a fixed iron core, a movable iron core, a spring, a coil and a shell. The valve body has water inlet and outlet openings at both ends, and the diaphragm is installed in the valve body. The isolating sleeve is fixed on the valve body by the pressing plate on the valve body. The isolating sleeve is provided with a coil outside and a movable iron core inside. The spring is located inside the movable iron core, and the upper end of the spring is fixedly connected with the fixed iron core. The upper end of the fixed iron core is fixedly connected with the shell. The diaphragm has a central hole in the middle. The lower end of the needle valve is fixedly connected with the lower end of the spring through the central hole of the diaphragm. The electromagnetic valve with the above structure has good corrosion resistance and improves the service life of the electromagnetic valve. The inventor found the following problems in the prior art during the implementation of the present application:

[0004] The existing bidirectional control electromagnetic valve usually relies on two independent electromagnetic coils to control the on-off of fluid in two directions respectively. Although this method can achieve bidirectional control, it requires additional space and power supply, resulting in larger overall volume and higher power consumption. At the same time, the reset spring in the electromagnetic valve may experience stress relaxation phenomenon as the stress decreases with the extension of working time after long-term use, which may affect the control accuracy of the electromagnetic valve. SUMMARY

[0005] The purpose of the present application is to provide a bidirectional control electromagnetic valve.

[0006] In the first aspect, the bidirectional control electromagnetic valve provided by the present application adopts the following technical solution:

[0007] The utility model provides a bidirectional control electromagnetic valve, including the main valve body, one side of main valve body is connected with the valve cylinder through the seal connection ring, and the middle part of valve cylinder one side is arranged with the oil inlet, and the oil inlet is provided with no.

[0008] Through the above technical scheme, the main valve body plays a protective role for the electromagnetic valve shell, when the electromagnetic valve is powered off, the oil can flow to the first communication port through the oil inlet and then conduct to the communication pipe, and then conduct along the communication pipe and flow out from the oil return port, the first oil outlet and the second oil outlet are closed due to the abutment of the first valve block and the second valve block, and the second communication port is also closed, when the first electromagnet is powered on, a magnetic field is generated, which interacts with the magnetic material in the iron core to generate a force, which makes the iron core move to the side of the first electromagnet against the force of the return spring, the movement of the iron core drives the valve core to move synchronously, the movement of the valve core drives the first valve block and the second valve block to move synchronously, the first valve block and the second valve block make the first oil outlet and the second oil outlet open, and the guide port moves to the position of the first communication port and communicates with it, so that the oil flows from the oil inlet to the first oil outlet and from the second oil outlet to the oil return port, when the first electromagnet is powered off and the second electromagnet is powered on, a new magnetic field is generated to move the iron core to the side close to the second electromagnet, the movement of the iron core drives the valve core to move synchronously, the movement of the valve core drives the first valve block and the second valve block to move synchronously, so that the outer wall of the first valve block abuts against the first communication port to close the first communication port, the second valve block is dislocated with the second communication port to make the second communication port and the second oil outlet communicate with each other, so that the oil flows from the oil inlet to the first oil outlet and from the second oil outlet to the second communication port and then flows to the oil return port through the communication pipe, and the bidirectional control of the electromagnetic valve is realized through the interaction of the first electromagnet and the second electromagnet.

[0009] The iron core is connected to the valve core, the outer wall of the iron core is provided with a coil, the inner wall of the connecting part between the main valve body and the valve cylinder is provided with a sealing ring, the sealing ring is sleeved on the outer wall of the valve core, one side of the outer wall of the main valve body is connected with a first electromagnet, one side of the first electromagnet is provided with a second electromagnet, the end of the iron core away from the valve core is connected with a limit movable plate, one end of the limit movable plate is connected with a return spring.

[0010] By adopting the above technical scheme, the main purpose of winding the coil on the iron core is to generate a magnetic field, when the current of the first electromagnet or the second electromagnet passes through the coil, a magnetic field is generated around the coil, which magnetizes the iron core to form a magnetic pole, according to the law of magnetic lines of force, magnetic force is generated between the magnetic poles, which attracts or repels the valve core, thereby driving the iron core to move, so as to control the opening and closing of the electromagnetic valve, the sealing performance of the fluid is ensured by the sealing ring, and the electromagnetic valve can automatically return to the preset state when power off is ensured by the return spring.

[0011] The middle part of the first valve block and the second valve block is provided with a pressure sensor, the pressure sensor is connected with the inner wall of the valve cylinder, one side of the pressure sensor is provided with a temperature sensor, the outer wall of the side of the main valve body away from the first electromagnet is connected with a controller, one side of the controller is provided with a communication module, the controller, the communication module, the pressure sensor and the temperature sensor are connected through wires.

[0012] By adopting the above technical scheme, the temperature and pressure changes in the electromagnetic valve can be monitored in real time through the pressure sensor and the temperature sensor, and the current size of the electromagnetic coil can be automatically adjusted through the controller, so that more accurate fluid control is realized.

[0013] The end of the main valve body away from the valve cylinder is provided with a pressure regulating mechanism, the pressure regulating mechanism comprises an extrusion plate, a threaded rod, a threaded cylinder, a limit rod and an adjusting knob, the extrusion plate is embedded in the main valve body, one end of the return spring away from the limit movable plate is connected with the extrusion plate, one end of the extrusion plate away from the return spring is connected with the threaded rod, one end of the threaded rod away from the extrusion plate is threadedly connected with the threaded cylinder, and one end of the threaded cylinder away from the threaded rod is connected with the inner wall of the main valve body through a bearing.

[0014] By adopting the technical scheme, stress of the reset spring in the electromagnetic valve may decrease with the prolongation of working time after long time use, and stress relaxation may occur, the pressure between the reset spring and the extrusion plate and the iron core when the reset spring resets can be detected by the second pressure sensor, a signal can be transmitted to the controller when the detected pressure decreases, the controller transmits the signal to the outside through the communication unit to remind the worker to adjust, the reset spring can be extruded by a certain distance through the pressure regulating mechanism, so that the elastic force of the reset spring is kept in a good state before stress relaxation, so as to improve the accuracy of the electromagnetic valve.

[0015] The two sides of the extrusion plate are connected with limiting rods, the end portions of the limiting rods penetrate the inner wall of the main valve body, and an adjusting knob is arranged on the outer wall of one end of the main valve body and connected with the adjusting end of the adjusting knob and the threaded cylinder.

[0016] By adopting the technical scheme, the limiting rods play a limiting role, the threaded cylinder is synchronously rotated by rotating the adjusting knob, the threaded rod is reciprocatingly translated by the rotation of the threaded cylinder, and the extrusion plate is translated by the translation of the threaded rod, so that the reset spring is extruded for adjustment.

[0017] One side of the extrusion plate is provided with a second pressure sensor, the second pressure sensor and the controller are connected through wires, the threaded cylinder is synchronously rotated by rotating the adjusting knob, the threaded rod is reciprocatingly translated by the rotation of the threaded cylinder, and the extrusion plate is translated by the translation of the threaded rod, so that the reset spring is extruded.

[0018] By adopting the technical scheme, the pressure between the reset spring and the extrusion plate and the iron core when the reset spring resets can be detected by the second pressure sensor, a signal can be transmitted to the controller when the detected pressure decreases, so as to adjust through the pressure regulating mechanism.

[0019] The outer wall of the valve cylinder is sleeved with an adjusting cylinder, the outer wall of the adjusting cylinder is arranged with through holes, the through holes are matched with the oil inlet, the first oil outlet and the second oil outlet respectively, and the oil return port and the middle portions of the through holes are provided with filter screens.

[0020] By adopting the technical scheme, the adjusting cylinder can rotate on the outer wall of the valve cylinder, the through holes are synchronously rotated by the rotation of the adjusting cylinder, the through holes are moved to produce a certain misalignment with the oil inlet, the first oil outlet and the second oil outlet, so that the pore diameter through which the oil passes is reduced to realize the function of adjusting the flow of the oil passing through the electromagnetic valve, impurities in the fluid entering the electromagnetic valve can be removed through the filter screens to prevent blockage and wear and prolong the service life of the electromagnetic valve.

[0021] The middle outer wall of the valve barrel is provided with a limiting ring groove, the inner wall of the limiting ring groove is provided with a limiting groove, and the inner wall of the adjusting barrel is provided with a connecting ring embedded in the limiting ring groove.

[0022] By adopting the above technical scheme, the limiting ring groove plays a limiting role, and the connecting ring is embedded in the limiting ring groove, so that the adjusting barrel can rotate on the outer wall of the valve barrel.

[0023] The inner wall of the connecting ring is provided with a movable cavity, the inner wall of the movable cavity is connected with a spring, one end of the spring away from the inner wall of the movable cavity is connected with a top block, the end of the top block away from the spring is embedded in the limiting groove through the movable cavity, and the end of the top block is arc-shaped.

[0024] By adopting the above technical scheme, when the adjusting barrel rotates on the outer wall of the valve barrel, the spring and the top block can be driven to rotate, and after the top block moves to the limiting groove, the top block is embedded in the limiting groove through the elastic force of the spring, thereby playing a limiting role, and the adjusting barrel 34 is prevented from rotating randomly on the outer wall of the valve barrel 3.

[0025] In summary, the present application has at least one of the following beneficial technical effects:

[0026] 1. When the electromagnetic valve is powered off, the oil can flow through the oil inlet to the first communication port and then conduct into the communication pipe, and then conduct along the communication pipe and flow out from the oil return port. The first oil outlet and the second oil outlet are in a closed state due to the abutment of the first valve block and the second valve block. At the same time, the second communication port is also in a closed state. When the first electromagnet is powered on, a magnetic field is generated, which interacts with the magnetic material in the iron core to generate a force, enabling the iron core to move to the side of the first electromagnet against the force of the return spring. The movement of the iron core drives the spool to move synchronously. The movement of the spool drives the first valve block and the second valve block to move synchronously. The first valve block and the second valve block enable the first oil outlet and the second oil outlet to be in an open state. At the same time, the flow guide port moves to the position of the first communication port and communicates with it, so that the oil flows from the oil inlet to the first oil outlet and from the second oil outlet to the oil return port. When the first electromagnet is powered off and the second electromagnet is powered on, a new magnetic field is generated, which moves the iron core to the side close to the second electromagnet. The movement of the iron core drives the spool to move synchronously. The movement of the spool drives the first valve block and the second valve block to move synchronously, so that the outer wall of the first valve block abuts against the first communication port, thereby closing the first communication port. The second valve block is misaligned with the second communication port, so that the second communication port and the second oil outlet communicate with each other, thereby realizing the flow of oil from the oil inlet to the first oil outlet and from the second oil outlet to the second communication port and then to the oil return port through the communication pipe. Through the interaction of the first electromagnet and the second electromagnet, bidirectional control of the electromagnetic valve is realized. Through integrated design, the overall size of the electromagnetic valve is reduced, which is suitable for installation in a small space.

[0027] 2. The second pressure sensor can detect the pressure between the reset spring and the iron core when the reset spring is reset. When the pressure is detected to decrease, a signal can be transmitted to the controller, and the controller transmits the signal to the outside through the communication unit to remind the staff to adjust. The reset spring can be extruded by a certain distance through the pressure regulating mechanism, so that the elastic force thereof is kept in a good state before stress relaxation, so as to improve the precision of the electromagnetic valve. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a schematic diagram of the overall structure of embodiment 1 of the present application;

[0029] Figure 2 is a schematic diagram of the internal structure of the main valve body of embodiment 1 of the present application;

[0030] Figure 3 is a schematic diagram of the pressure regulating mechanism structure of embodiment 1 of the present application;

[0031] Figure 4 is a schematic diagram of the valve core structure of embodiment 1 of the present application;

[0032] Figure 5 is a schematic diagram of the overall internal structure of embodiment 1 of the present application;

[0033] Figure 6 is a schematic diagram of the communication structure of the valve cylinder in different states of embodiment 1 of the present application;

[0034] Figure 7 is a schematic diagram of the connection structure of the connecting ring and the limiting ring groove of embodiment 1 of the present application;

[0035] BRIEF DESCRIPTION OF DRAWINGS: 1, main valve body; 2, sealing connecting ring; 3, valve cylinder; 4, oil inlet; 5, first oil outlet; 6, second oil outlet; 7, oil return port; 8, communication pipe; 9, first communication port; 10, second communication port; 11, valve core; 12, first valve block; 13, second valve block; 14, flow guide pipe; 15, flow guide port; 16, iron core; 17, coil; 18, sealing ring; 19, first electromagnet; 20, second electromagnet; 21, limiting movable plate; 22, reset spring; 23, pressure sensor; 24, temperature sensor; 25, controller; 26, communication module; 27, pressure regulating mechanism; 28, extrusion plate; 29, threaded rod; 30, threaded cylinder; 31, limiting rod; 32, adjusting knob; 33, second pressure sensor; 34, adjusting cylinder; 35, through hole; 36, top block; 37, filter screen; 38, limiting ring groove; 39, limiting groove; 40, connecting ring; 41, movable cavity; 42, spring. DETAILED DESCRIPTION

[0036] The following will be described in detail with reference to the accompanying drawings Figure 1 -Figure 7 The application is further described in detail.

[0037] The embodiment 1 is a bidirectional control electromagnetic valve, which comprises a main valve body 1, a valve cylinder 3 connected to one side of the main valve body 1 through a sealing connecting ring 2, an oil inlet 4 arranged on one side of the middle part of the valve cylinder 3, a first oil outlet 5 arranged on the side of the oil inlet 4 away from the main valve body 1, a second oil outlet 6 arranged on the side of the oil inlet 4 away from the first oil outlet 5, an oil return port 7 arranged at the end of the valve cylinder 3, a communication pipe 8 communicated with one side of the oil return port 7, a first communication port 9 arranged on the end of the communication pipe 8 and extending to the inner wall of the valve cylinder 3, a second communication port 10 arranged on one side of the first communication port 9, a valve core 11 arranged in the main valve body 1 and movably connected with the main valve body 1, a first valve block 12 connected with one end of the valve core 11 and extending into the valve cylinder 3, the outer wall of the first valve block 12 abutting against the first oil outlet 5, a second valve block 13 arranged on one side of the first valve block 12, the outer wall of the second valve block 13 abutting against the second oil outlet 6, and the protruding end of one side of the second valve block 13 abutting against the second communication port 10, the first communication port 9 being communicated with the first oil outlet 5, a flow guide pipe 14 arranged on one side of the first valve block 12 in a penetrating mode, a flow guide port 15 arranged on the top of the flow guide pipe 14 and abutting against the inner wall of the valve cylinder 3, and the flow guide port 15 corresponding to the first communication port 9, the main valve body 1 serving as an electromagnetic valve shell and playing a role of protection and support, when the electromagnetic valve is powered off, the oil can flow to the first communication port 9 through the oil inlet 4, then be conducted into the communication pipe 8, and then be conducted along the communication pipe 8 and flow out from the oil return port 7, the first oil outlet 5 and the second oil outlet 6 are in a closed state due to the abutment of the first valve block 12 and the second valve block 13, and the second communication port 10 is also in a closed state, when the first electromagnet 19 is powered on, a magnetic field is generated, the magnetic field interacts with the magnetic material in the iron core 16, a force is generated, the iron core 16 moves to one side of the first electromagnet 19 by overcoming the force of the return spring 22, the movement of the iron core 16 drives the valve core 11 to move synchronously, the movement of the valve core 11 drives the first valve block 12 and the second valve block 13 to move synchronously, the first valve block 12 and the second valve block 13 make the first oil outlet 5 and the second oil outlet 6 be in an open state, and the flow guide port 15 moves to the position of the first communication port 9 and is communicated with the first communication port 9, so that the oil flows from the oil inlet 4 to the first oil outlet 5 and from the second oil outlet 6 to the oil return port 7, when the first electromagnet 19 is powered off and the second electromagnet 20 is powered on, a new magnetic field is generated to move the iron core 16 to the side close to the second electromagnet 20, the movement of the iron core 16 drives the valve core 11 to move synchronously, the movement of the valve core 11 drives the first valve block 12 and the second valve block 13 to move synchronously, so that the outer wall of the first valve block 12 abuts against the first communication port 9 to make the first communication port 9 be closed, the second valve block 13 is dislocated from the second communication port 10 to make the second communication port 10 communicated with the second oil outlet 6, so that the oil flows from the oil inlet 4 to the first oil outlet 5.From the second oil outlet 6 to the second communication port 10 through the communication pipe 8 to the oil return port 7, through the interaction of the first electromagnet 19 and the second electromagnet 20 to realize the bidirectional control of the electromagnetic valve.

[0038] The outer wall of the iron core 16 is provided with a coil 17, and the inner wall of the connection between the main valve body 1 and the valve cylinder 3 is provided with a sealing ring 18, the sealing ring 18 is sleeved on the outer wall of the valve core 11, one side of the main valve body 1 is connected with a first electromagnet 19, one side of the first electromagnet 19 is provided with a second electromagnet 20, one end of the iron core 16 away from the valve core 11 is connected with a limit movable plate 21, one end of the limit movable plate 21 is connected with a reset spring 22, the main purpose of the iron core 16 winding the coil 17 is to generate a magnetic field, when the current of the first electromagnet 19 or the second electromagnet 20 passes through the coil 17, a magnetic field will be generated around the coil 17, which will magnetize the iron core 16 and form a magnetic pole, according to the law of magnetic force line, magnetic force will be generated between the magnetic poles, which will make the valve core 11 be attracted or repelled, so as to realize the movement of the iron core 16 to control the opening and closing of the electromagnetic valve, the sealing performance of the fluid is ensured by the sealing ring 18, and the electromagnetic valve can automatically return to the preset state when power off by the reset spring 22.

[0039] The middle part of the first valve block 12 and the second valve block 13 is provided with a pressure sensor 23, the pressure sensor 23 is connected with the inner wall of the valve cylinder 3, one side of the pressure sensor 23 is provided with a temperature sensor 24, one side of the main valve body 1 away from the first electromagnet 19 is connected with a controller 25, one side of the controller 25 is provided with a communication module 26, the controller 25, the communication module 26, the pressure sensor 23 and the temperature sensor 24 are connected through wires, the temperature and pressure changes in the electromagnetic valve can be monitored in real time through the pressure sensor 23 and the temperature sensor 24, the current of the electromagnetic coil 17 is automatically adjusted through the controller 25, and more accurate fluid control is realized.

[0040] The main valve body 1 is provided with a pressure regulating mechanism 27 at the end away from the valve barrel 3, the pressure regulating mechanism 27 comprises an extrusion plate 28, a threaded rod 29, a threaded barrel 30, a limiting rod 31 and an adjusting knob 32, the extrusion plate 28 is embedded in the main valve body 1, the return spring 22 is connected with the extrusion plate 28 at the end away from the limiting movable plate 21, the extrusion plate 28 is connected with the threaded rod 29 at the end away from the return spring 22, the threaded rod 29 is threadedly connected with the threaded barrel 30 at the end away from the extrusion plate 28, the threaded barrel 30 is connected with the inner wall of the main valve body 1 through a bearing at the end away from the threaded rod 29, the stress of the return spring 22 in the electromagnetic valve may decrease with the extension of the working time after long time use, thereby stress relaxation phenomenon occurs, the pressure between the extrusion plate 28 and the iron core 16 when the return spring 22 resets can be detected by the second pressure sensor 33, when the pressure is detected to decrease, the signal can be transmitted to the controller 25, the controller 25 transmits the signal to the outside through the communication unit to remind the worker to adjust, the return spring 22 can be extruded by a certain distance by the pressure regulating mechanism 27, so that the elastic force thereof is kept in a good state before stress relaxation, so as to improve the accuracy of the electromagnetic valve.

[0041] The limiting rod 31 is connected to the two sides of the extrusion plate 28, the end of the limiting rod 31 penetrates the inner wall of the main valve body 1, the outer wall of one end of the main valve body 1 is provided with the adjusting knob 32, the adjusting end of the adjusting knob 32 is connected with the threaded barrel 30, the limiting rod 31 plays a limiting role, the threaded barrel 30 is driven to rotate synchronously by twisting the adjusting knob 32, the threaded barrel 30 drives the threaded rod 29 to move reciprocatingly, the threaded rod 29 drives the extrusion plate 28 to move translationally, thereby extruding the return spring 22, so as to adjust it.

[0042] The second pressure sensor 33 is arranged on one side of the extrusion plate 28, the second pressure sensor 33 is connected with the controller 25 through wires, the threaded barrel 30 is driven to rotate synchronously by twisting the adjusting knob 32, the threaded barrel 30 drives the threaded rod 29 to move reciprocatingly, the threaded rod 29 drives the extrusion plate 28 to move translationally, thereby extruding the return spring 22, the pressure between the extrusion plate 28 and the iron core 16 when the return spring 22 resets can be detected by the second pressure sensor 33, when the pressure is detected to decrease, the signal can be transmitted to the controller 25, so as to adjust by the pressure regulating mechanism 27.

[0043] The outer wall of the valve cylinder 3 is sleeved with an adjusting cylinder 34, the outer wall of the adjusting cylinder 34 is arranged with through holes 35, the through holes 35 are matched with the oil inlet 4, the first oil outlet 5 and the second oil outlet 6 respectively, the oil return port 7 and the middle part of the through holes 35 are provided with filter screens 37, the adjusting cylinder 34 can rotate on the outer wall of the valve cylinder 3, the adjusting cylinder 34 drives the through holes 35 to rotate synchronously, the through holes 35 move to produce a certain dislocation with the oil inlet 4, the first oil outlet 5 and the second oil outlet 6, so that the aperture through which the oil passes becomes smaller, thereby realizing the function of adjusting the flow of the oil passing through the electromagnetic valve, the filter screens 37 can remove impurities in the fluid entering the electromagnetic valve, prevent clogging and wear, and prolong the service life of the electromagnetic valve.

[0044] The middle part of the outer wall of the valve cylinder 3 is provided with a limiting ring groove 38, the inner wall of the limiting ring groove 38 is arranged with a limiting groove 39, one side of the inner wall of the adjusting cylinder 34 is provided with a connecting ring 40, the connecting ring 40 is embedded in the limiting ring groove 38, the limiting ring groove 38 plays a limiting role, and the connecting ring 40 is embedded in the limiting ring groove 38 through the connecting ring 40, so that the adjusting cylinder 34 can rotate on the outer wall of the valve cylinder 3.

[0045] The inner wall of the connecting ring 40 is arranged with a movable cavity 41, the inner wall of the movable cavity 41 is connected with a spring 42, one end of the spring 42 away from the inner wall of the movable cavity 41 is connected with a top block 36, the other end of the top block 36 away from the spring 42 passes through the movable cavity 41 and is embedded in the limiting groove 39, the end of the top block 36 is arc-shaped, the adjusting cylinder 34 can drive the spring 42 and the top block 36 to rotate when rotating on the outer wall of the valve cylinder 3, the top block 36 moves to the limiting groove 39 and is embedded in the limiting groove 39 through the elastic force of the spring 42, thereby playing a limiting role, and avoiding the adjusting cylinder 34 from rotating randomly on the outer wall of the valve cylinder 3.

[0046] The implementation principle of the embodiment of the application is as follows: first, the electromagnetic valve is installed into the oil tank; when the electromagnetic valve is powered off, the oil can flow to the first communication port 9 through the oil inlet 4 and then be conducted into the communication pipe 8, and then flow out from the oil return port 7 after being conducted along the communication pipe 8; the first oil outlet 5 and the second oil outlet 6 are in a closed state due to the abutment of the first valve block 12 and the second valve block 13; and the second communication port 10 is also in a closed state; when the first electromagnet 19 is powered on, a magnetic field is generated, the magnetic field interacts with the magnetic material in the iron core 16, a force is generated, the iron core 16 moves to the side of the first electromagnet 19 against the force of the return spring 22, the movement of the iron core 16 drives the valve core 11 to move synchronously, the movement of the valve core 11 drives the first valve block 12 and the second valve block 13 to move synchronously, the first valve block 12 and the second valve block 13 make the first oil outlet 5 and the second oil outlet 6 be in an open state, and the flow guide port 15 moves to the position of the first communication port 9 and is connected with the first communication port 9, so that the oil flows from the oil inlet 4 to the first oil outlet 5 and from the second oil outlet 6 to the oil return port 7; when the first electromagnet 19 is powered off and the second electromagnet 20 is powered on, a new magnetic field is generated to move the iron core 16 to the side close to the second electromagnet 20, the movement of the iron core 16 drives the valve core 11 to move synchronously, the movement of the valve core 11 drives the first valve block 12 and the second valve block 13 to move synchronously, so that the outer wall of the first valve block 12 abuts against the first communication port 9 and the first communication port 9 is closed, the second valve block 13 is misaligned with the second communication port 10, so that the second communication port 10 is connected with the second oil outlet 6, thereby realizing the flow of the oil from the oil inlet 4 to the first oil outlet 5 and from the second oil outlet 6 to the second communication port 10 and then to the oil return port 7 through the communication pipe 8; the interaction of the first electromagnet 19 and the second electromagnet 20 realizes the bidirectional control of the electromagnetic valve; the main purpose of the winding of the coil 17 around the iron core 16 is to generate a magnetic field; when the current of the first electromagnet 19 or the second electromagnet 20 passes through the coil 17, a magnetic field is generated around the coil 17, the magnetic field magnetizes the iron core 16 to form a magnetic pole, according to the law of magnetic lines of force, a magnetic force is generated between the magnetic poles, the magnetic force attracts or repels the valve core 11, thereby driving the iron core 16 to move, so as to control the opening and closing of the electromagnetic valve; the sealing ring 18 ensures the sealing performance of the fluid; the return spring 22 ensures that the electromagnetic valve can automatically return to the preset state when powered off; the stress of the return spring 22 in the electromagnetic valve may decrease with the prolongation of the working time after long-time use, thereby causing stress relaxation; the second pressure sensor 33 can detect the pressure between the extrusion plate 28 and the iron core 16 when the return spring 22 is reset, and when the detected pressure decreases, a signal is transmitted to the controller 25, the controller 25 transmits the signal to the outside through the communication unit to remind the staff to adjust,The reset spring 22 is pressed by the pressure adjusting mechanism 27 by a certain distance, so that the elastic force of the reset spring 22 is kept in a good state before stress relaxation, so as to improve the precision of the electromagnetic valve. The pressure between the pressing plate 28 and the iron core 16 when the reset spring 22 is reset can be detected by the second pressure sensor 33, and when the pressure is detected to be reduced, a signal can be transmitted to the controller 25, so as to adjust the pressure adjusting mechanism 27. The adjusting cylinder 34 can rotate on the outer wall of the valve cylinder 3. The adjusting cylinder 34 rotates to drive the through hole 35 to rotate synchronously. The through hole 35 moves to be misaligned with the oil inlet 4, the first oil outlet 5 and the second oil outlet 6, so that the hole diameter through which the oil passes is reduced, thereby realizing the function of adjusting the flow of the oil passing through the electromagnetic valve. The filter screen 37 can remove impurities in the fluid entering the electromagnetic valve, prevent clogging and wear, and prolong the service life of the electromagnetic valve. When the adjusting cylinder 34 rotates on the outer wall of the valve cylinder 3, the spring 42 and the top block 36 can be driven to rotate. When the top block 36 moves to the limiting groove 39, the top block 36 is embedded in the limiting groove 39 by the elastic force of the spring 42, thereby limiting the rotation of the adjusting cylinder 34 on the outer wall of the valve cylinder 3.

[0047] The embodiments of the specific embodiment are the preferred embodiments of the application, and are not limited to the protection scope of the application, wherein the same parts are denoted by the same reference numerals. Therefore, any equivalent changes made according to the structure, shape and principle of the application should be covered by the protection scope of the application.

Claims

1. A bidirectional control solenoid valve, comprising a main valve body (1), characterized in that: One side of the main valve body (1) is connected to a valve cylinder (3) via a sealing connecting ring (2). An oil inlet (4) is arranged on one side of the middle of the valve cylinder (3). A first oil outlet (5) is provided on the side of the oil inlet (4) away from the main valve body (1). A second oil outlet (6) is provided on the side of the oil inlet (4) away from the first oil outlet (5). A return oil port (7) is provided at the end of the valve cylinder (3). A connecting pipe (8) is connected to one side of the return oil port (7). A first connecting port (9) is provided on the end of the connecting pipe (8) extending through the inner wall of the valve cylinder (3). A second connecting port (10) is provided on one side of the first connecting port (9). A valve core (11) is provided inside the main valve body (1). The valve core (11) is connected to the main valve body (1) via a flexible joint. The valve core (11) is connected to a valve block (12) at one end, which extends into the valve cylinder (3). The outer wall of the valve block (12) abuts against the oil outlet (5). A valve block (13) is provided on one side of the valve block (12). The outer wall of the valve block (13) abuts against the oil outlet (6). The protruding end of the valve block (13) abuts against the connecting port (10). The connecting port (9) is connected to the oil outlet (5). A guide pipe (14) is provided through one side of the valve block (12). A guide port (15) is provided at the top of the guide pipe (14). The guide port (15) abuts against the inner wall of the valve cylinder (3). The guide port (15) corresponds to the connecting port (9). The valve core (11) is connected to an iron core (16) at the end away from the valve cylinder (3). A coil (17) is arranged around the outer wall of the iron core (16). A sealing ring (18) is provided on the inner wall of the connection between the main valve body (1) and the valve cylinder (3). The sealing ring (18) is sleeved on the outer wall of the valve core (11). A first electromagnet (19) is connected to one side of the outer wall of the main valve body (1). A second electromagnet (20) is provided on one side of the first electromagnet (19). A limit plate (21) is connected to the end of the iron core (16) away from the valve core (11). A return spring (22) is connected to one end of the limit plate (21).

2. The bidirectional control solenoid valve according to claim 1, characterized in that: A pressure sensor (23) is provided in the middle of the first valve block (12) and the second valve block (13). The pressure sensor (23) is connected to the inner wall of the valve cylinder (3). A temperature sensor (24) is provided on one side of the pressure sensor (23). A controller (25) is connected to the outer wall of the main valve body (1) away from the first electromagnet (19). A communication module (26) is provided on one side of the controller (25). The controller (25) is connected to the communication module (26), the pressure sensor (23), and the temperature sensor (24) by wires.

3. The bidirectional control solenoid valve according to claim 1, characterized in that: A pressure regulating mechanism (27) is provided at one end of the main valve body (1) away from the valve cylinder (3). The pressure regulating mechanism (27) includes a pressing plate (28), a threaded rod (29), a threaded cylinder (30), a limiting rod (31), and an adjusting knob (32). The pressing plate (28) is embedded in the main valve body (1). The end of the return spring (22) away from the limiting movable plate (21) is connected to the pressing plate (28). The end of the pressing plate (28) away from the return spring (22) is connected to the threaded rod (29). The end of the threaded rod (29) away from the pressing plate (28) is threadedly connected to the threaded cylinder (30). The end of the threaded cylinder (30) away from the threaded rod (29) is directly connected to the inner wall of the main valve body (1) through a bearing.

4. A bidirectional control solenoid valve according to claim 3, characterized in that: Both sides of the extrusion plate (28) are connected to limit rods (31). The end of the limit rod (31) passes through the inner wall of the main valve body (1). An adjustment knob (32) is provided on the outer wall of one end of the main valve body (1). The adjustment end of the adjustment knob (32) is connected to the threaded cylinder (30).

5. A bidirectional control solenoid valve according to claim 4, characterized in that: A second pressure sensor (33) is provided on one side of the extrusion plate (28). The second pressure sensor (33) is connected to the controller (25) by a wire. Twisting the adjustment knob (32) rotates the threaded cylinder (30) synchronously. The rotation of the threaded cylinder (30) drives the threaded rod (29) to reciprocate. The translation of the threaded rod (29) drives the extrusion plate (28) to translate, thereby extruding the return spring (22).

6. A bidirectional control solenoid valve according to claim 1, characterized in that: The outer wall of the valve cylinder (3) is fitted with an adjusting cylinder (34), and the outer wall of the adjusting cylinder (34) is provided with through holes (35). The through holes (35) are matched with the oil inlet (4), the first oil outlet (5) and the second oil outlet (6) respectively. The return oil port (7) and the middle of the through holes (35) are both provided with filter screens (37).

7. A bidirectional control solenoid valve according to claim 6, characterized in that: The valve cylinder (3) has a limiting ring groove (38) on its outer wall in the middle, and the inner wall of the limiting ring groove (38) has a limiting groove (39) arranged in a row. The inner wall of the regulating cylinder (34) has a connecting ring (40) on one side, and the connecting ring (40) is embedded in the limiting ring groove (38).

8. A bidirectional control solenoid valve according to claim 7, characterized in that: The inner wall of the connecting ring (40) is provided with movable cavities (41), and the inner wall of the movable cavity (41) is connected with a spring (42). The end of the spring (42) away from the inner wall of the movable cavity (41) is connected with a top block (36). The end of the top block (36) away from the spring (42) passes through the movable cavity (41) and is embedded in the limiting groove (39). The end of the top block (36) is arc-shaped.

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