A six-way normally closed solenoid valve

Abstract

The present invention belongs to the technical field of solenoid valves, and in particular, relates to a six-point normally closed solenoid valve, including a valve body and a valve cover, the top of the valve cover is connected to a controller, both ends of the valve body are provided with connection ports, the top of the valve body is provided with a valve cavity, a connecting pipe is vertically fixedly connected to the inner wall of the bottom of the valve cavity, and the top opening of the connecting pipe protrudes inward, and the side of the connecting pipe is connected to one of the connection ports of the valve body. The present invention is provided with a locking assembly, when the pressure rod presses the sealing plate and the rubber block to close the connecting pipe and the through hole, the guide rod and the guide groove can cooperate with each other and push the movable block out of the pressure rod, and then when the connecting pipe and the through hole are completely closed, the block can lock the pressure rod by restricting the movable block, so as to ensure that the sealing plate or the rubber block will not lose the sealing effect on the connecting pipe and the through hole due to insufficient elastic force of the first compression spring while closing the valve body, thereby ensuring the sealing of the valve body.

Description

Technical Field

[0001] The invention belongs to the technical field of solenoid valves, and in particular relates to a six-way normally closed solenoid valve. Background Art

[0002] Solenoid valves are industrial equipment controlled by electromagnetics. They are basic automation components used to control fluids. They are actuators and are not limited to hydraulic or pneumatic. They are used in industrial control systems to adjust the direction, flow, speed and other parameters of the medium. Solenoid valves can be used with different circuits to achieve the desired control, and the accuracy and flexibility of the control can be guaranteed. There are many types of solenoid valves, and different solenoid valves play a role in different positions in the control system. The most commonly used ones are check valves, safety valves, directional control valves, speed regulating valves, etc.

[0003] The working principle of the existing solenoid valve is: when the power is on, the electromagnetic coil generates electromagnetic force to lift the closing member from the valve seat, and the valve opens; when the power is off, the electromagnetic force disappears, the spring presses the closing member on the valve seat, and the valve closes. Since the opening and closing of the valve is mainly achieved by the cooperation of the spring and the electromagnetic coil, when the elastic force of the spring decreases during long-term use, the closing member will not be tightly pressed on the valve seat under the push of the water pressure, and the valve will be loose, thereby affecting the sealing of the valve body.

[0004] Therefore, it is necessary to invent a six-point normally closed solenoid valve to solve the above problems. Summary of the invention

[0005] In view of the above problems, the present invention provides a six-way normally closed solenoid valve to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A six-way normally closed solenoid valve, comprising a valve body and a valve cover, wherein a controller is connected to the top of the valve cover, connection ports are provided at both ends of the valve body, a valve cavity is provided at the top of the valve body, a connecting pipe is vertically fixedly connected to the inner wall of the bottom of the valve cavity, and the top opening of the connecting pipe protrudes inwardly, the side of the connecting pipe is communicated with one of the connection ports of the valve body, a sealing plate is provided at the top of the connecting pipe, a through hole is penetrated at the center of the sealing plate, a flow guide pipe is vertically connected to the bottom of the through hole, a circular limit plate is fixedly sleeved on the part of the flow guide pipe located in the connecting pipe, and the bottom edge of the limit plate A plurality of limit rods are fixedly connected vertically in the position, and the side of the limit rod away from the center of the limit plate is fitted with the inner wall of the connecting pipe; a connecting sleeve is fixedly connected to the top of the sealing plate, and a notch is provided on the side of the connecting sleeve; a pressure rod is slidably inserted into the top of the connecting sleeve, and the pressure rod is inserted into the valve cover; a rubber block is connected to the bottom end of the pressure rod, and the diameter of the upper half of the pressure rod is smaller than the diameter of the lower half; a first magnetic block is fixedly connected to the top of the pressure rod, and a reset assembly is slidably sleeved on the outside of the pressure rod; a mounting hole is provided at the top axis of the pressure rod, and a locking assembly is arranged in the mounting hole.

[0008] Furthermore, the reset assembly includes a sleeve, which is slidably sleeved on the outside of the pressure rod and inserted into the bottom of the controller, the top of the sleeve is connected to an electromagnet, and the electromagnet is connected to the controller together, a first retaining ring is fixedly connected to the inner wall of the sleeve, the first retaining ring is slidably sleeved on the upper half of the pressure rod, and a first compression spring is fixedly connected between the bottom of the first retaining ring and the lower half of the pressure rod, a mounting tube is fixedly sleeved on the outside of the sleeve, and the mounting tube is threadedly inserted into the top of the valve cover.

[0009] Furthermore, the locking assembly includes a movable rod, which is slidably inserted in the mounting hole of the pressure rod, and the top of the movable rod is connected to a second magnetic block, and the movable rod is slidably sleeved with a second retaining ring near the bottom end of the movable rod, and the second retaining ring is fixedly connected to the inner wall of the mounting hole, and first plug holes are symmetrically provided at positions on both sides of the pressure rod opposite to the bottom end of the movable rod, and the first plug hole is connected to the mounting hole, and a movable block is horizontally slidably inserted in the first plug hole, the bottom of the movable block away from one end of the movable rod is designed as an inclined surface, and the movable block has a groove starting from the top near one end of the movable rod, and guide grooves are symmetrically provided on the front and rear groove walls of the groove, and the guide grooves are inclined downward from top to bottom toward the direction close to the movable rod, a guide rod is slidably connected between the two guide grooves, and a fixed The cam is an angular channel that is adapted to move the spring between the first and second guide rails and the second guide rails and is adapted to move the spring between the first and second guide rails and the second guide rails and is adapted to move the spring between the first and second guide rails and the second guide rails and is adapted to move the spring between the first and second guide rails and the second guide rails and is adapted to move the spring between the first and second guide rails and the second guide rails.

[0010] Furthermore, a plurality of spiral guide strips are distributed in an annular manner on the surface of the guide tube near the bottom end, the guide strip is fixedly connected to the surface of the guide tube, and the bottom end of the guide strip is flush with the bottom end of the guide tube, a floating plate matching the torsion and width of the guide strip is hinged at the bottom of the guide strip, and the floating plate can only be deflected downward, and a lever is vertically fixedly connected to the inner wall of the side surface of the connecting tube, one end of the lever close to the guide tube is close to the surface of the guide tube, the diameter of the lever is smaller than the length of the floating plate, and the top edge of the floating plate is flush with the top edge of the adjacent guide strip.

[0011] Furthermore, a sealing ring is fixedly connected to the bottom of the sealing plate, and an annular sealing groove is provided at the top of the connecting pipe at a position opposite to the sealing ring, and the sealing ring and the sealing groove match each other.

[0012] Furthermore, a swivel is rotatably sleeved on the free end of the lever, and the swivel is opposite to the guide bar.

[0013] Furthermore, a plurality of rollers are rotatably mounted on the top of the free end of the movable block, and the length direction of the rollers is perpendicular to the movement direction of the movable block.

[0014] Furthermore, the magnetic poles of the first magnetic block and the second magnetic block on the side opposite to the electromagnet are opposite, and the attraction between the electromagnet and the first magnetic block and the attraction between the electromagnet and the second magnetic block are respectively greater than the maximum elastic force of the first compression spring and the second spring.

[0015] Technical effects and advantages of the present invention:

[0016] 1. The present invention is provided with a locking assembly. When the pressure rod presses the sealing plate and the rubber block to close the connecting pipe and the through hole, the guide rod and the guide groove can cooperate with each other and push the movable block out of the pressure rod. Then, when the connecting pipe and the through hole are completely closed, the block can lock the pressure rod by restricting the movable block. Thus, when the valve body is closed, it is ensured that the sealing plate or the rubber block will not lose the sealing effect on the connecting pipe and the through hole due to insufficient elastic force of the first compression spring, thereby ensuring the sealing of the valve body;

[0017] 2. The present invention is provided with a guide bar. When the guide pipe moves downward under the pressure of the rubber block on the sealing plate, the lever can drive the guide pipe and the sealing plate to rotate by the thrust on the bottom surface of the guide bar, so that the direction of water flowing out through the notch of the connecting sleeve can be changed, so that the water flowing out from the notch can more comprehensively impact the peripheral area of ​​the connecting pipe, thereby preventing impurities in the water from accumulating in the valve body. In addition, during the opening and closing process of the valve body, the guide pipe can rotate a certain angle, thereby preventing the guide pipe and the connecting pipe from being stuck by impurities or rust in the water;

[0018] 3. The present invention is provided with a roller shaft. When the movable block slides along the bottom of the stopper, the roller shaft can roll along the bottom of the stopper, thereby reducing the friction between the movable block and the stopper, thereby allowing the movable block to be more smoothly retracted into the pressure rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a three-dimensional schematic diagram of all structures except the controller in the present invention;

[0021] Figure 3 The present invention Figure 2 A three-dimensional cross-sectional view of

[0022] Figure 4 It is a three-dimensional schematic diagram of the valve body, the connecting pipe, the lever and the swivel in the present invention;

[0023] Figure 5 is a three-dimensional cross-sectional view of the pressure rod and the fixing ring in the present invention;

[0024] Figure 6The present invention Figure 5 A magnified view of part A;

[0025] Figure 7 is a three-dimensional cross-sectional view of a fixing ring of the present invention;

[0026] Figure 8 It is a partial three-dimensional schematic diagram of the locking assembly in the present invention;

[0027] Fig. 9 It is a three-dimensional schematic diagram of structures such as a sealing plate, a sealing ring, a limiting plate, a limiting rod, a shifting rod and a guide strip in the present invention.

[0028] In the figure: 1. valve body; 2. valve cover; 3. controller; 4. connecting pipe; 5. sealing plate; 6. guide pipe; 7. limit plate; 8. limit rod; 9. connecting sleeve; 10. pressure rod; 11. rubber block; 12. first magnetic block; 13. sleeve; 14. electromagnet; 15. first retaining ring; 16. first clamping spring; 17. mounting pipe; 18. movable rod; 19. second magnetic block; 20. second retaining ring; 21. movable block; 22. guide groove; 23. guide rod; 24. fixed block; 25. second clamping spring; 26. fixed ring; 27. stopper; 28. reset spring; 29. ​​guide strip; 30. floating plate; 31. lever; 32. sealing ring; 33. sealing groove; 34. swivel; 35. roller shaft. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0030] The present invention provides Figures 1 to 9A six-point normally closed solenoid valve shown in the figure comprises a valve body 1 and a valve cover 2, the top of the valve cover 2 is connected to a controller 3, both ends of the valve body 1 are provided with connecting ports, the top of the valve body 1 is provided with a valve cavity, a connecting pipe 4 is vertically fixedly connected to the inner wall of the bottom of the valve cavity, and the top opening of the connecting pipe 4 protrudes inward, the side of the connecting pipe 4 is connected to one of the connecting ports of the valve body 1, a sealing plate 5 is provided on the top of the connecting pipe 4, a through hole is penetrated at the center of the sealing plate 5, a guide pipe 6 is vertically connected to the bottom of the through hole, and the part of the guide pipe 6 located in the connecting pipe 4 is fixedly sleeved with a circular limit plate 7, and the bottom edge of the limit plate 7 is vertically positioned. A plurality of limit rods 8 are fixedly connected to the valve cover 2, and the side of the limit rod 8 away from the center of the limit plate 7 is fitted with the inner wall of the connecting pipe 4. A connecting sleeve 9 is fixedly connected to the top of the sealing plate 5, and a notch is provided on the side of the connecting sleeve 9. A pressure rod 10 is slidably inserted at the top of the connecting sleeve 9, and the pressure rod 10 is inserted through the valve cover 2. A rubber block 11 is connected to the bottom end of the pressure rod 10, and the diameter of the upper half of the pressure rod 10 is smaller than the diameter of the lower half. A first magnetic block 12 is fixedly connected to the top of the pressure rod 10, and a reset assembly is slidably sleeved on the outside of the pressure rod 10. A mounting hole is provided at the top axis of the pressure rod 10, and a locking assembly is provided in the mounting hole.

[0031] The reset assembly includes a sleeve 13, which is slidably sleeved on the outside of the pressure rod 10 and plugged into the bottom of the controller 3. The top of the sleeve 13 is connected to an electromagnet 14, and the electromagnet 14 is connected to the controller 3. A first retaining ring 15 is fixedly connected to the inner wall of the sleeve 13, and the first retaining ring 15 is slidably sleeved on the upper half of the pressure rod 10, and a first compression spring 16 is fixedly connected between the bottom of the first retaining ring 15 and the lower half of the notch. A mounting tube 17 is fixedly sleeved on the outside of the sleeve 13, and the mounting tube 17 is threadedly plugged into the top of the valve cover 2;

[0032] When in use, the two connection ports of the valve body 1 are connected to the water inlet pipe and the water outlet pipe respectively, and then the controller 3 is connected to the power supply. When the controller 3 is powered on, the electromagnet 14 can generate suction force on the first magnetic block 12, thereby pulling the pressure rod 10 to move upward. As the pressure rod 10 moves upward, the first compression spring 16 can be gradually compressed under the squeezing action of the lower half of the pressure rod 10 and the first retaining ring 15. At the same time, as the pressure rod 10 moves upward, the pressure rod 10 no longer generates pressure on the sealing plate 5 through the rubber block 11. force, at this time, the sealing plate 5 can move upward under the push of the water pressure, and when the limit plate 7 contacts the part protruding inward from the top opening of the connecting pipe 4 along the vertical direction under the limiting action of the limit rod 8, the limit plate 7 and the sealing plate 5 stop moving, and the pressure rod 10 continues to drive the rubber block 11 to move upward, so that the through hole at the top of the guide pipe 6 can be opened, and then the two connecting ports of the valve body 1 can be connected through the connecting pipe 4, the guide pipe 6 and the notch of the connecting sleeve 9 in turn, and the valve body 1 is in an open state at this time;

[0033] When the controller 3 is powered off, the electromagnet 14 loses its suction force on the first magnetic block 12, so that the pressure rod 10 can drive the rubber block 11 to move downward. When the rubber block 11 contacts the sealing plate 5, the sealing plate 5 can be pressed downward together and finally pressed together with the top of the connecting pipe 4. At this time, the through hole is closed by the rubber block 11, and the connecting pipe 4 is closed by the sealing plate 5, thereby achieving the effect of closing the valve body 1. In addition, during the closing process of the valve body 1, the locking assembly in the pressure rod 10 can mechanically lock the pressure rod 10, thereby ensuring that after the valve body 1 is closed, the sealing plate 5 or the rubber block 11 will not lose the sealing effect on the connecting pipe 4 and the through hole due to insufficient elastic force of the first compression spring 16, thereby ensuring the sealing of the valve body 1.

[0034] like Figures 5 to 8As shown, the locking assembly includes a movable rod 18, which is slidably inserted in the mounting hole of the pressure rod 10, and the top of the movable rod 18 is connected to a second magnetic block 19, and the movable rod 18 is slidably sleeved with a second retaining ring 20 near the bottom end, and the second retaining ring 20 is fixedly connected to the inner wall of the mounting hole, and the pressure rod 10 has first plug holes symmetrically opened at positions opposite to the bottom end of the movable rod 18 on both sides, and the first plug holes are connected to the mounting hole, and a movable block 21 is horizontally slidably inserted in the first plug hole, and the movable block 21 is away from the movable block 21. The bottom of one end of the movable rod 18 is designed as an inclined surface. The movable block 21 has a groove near the top of one end of the movable rod 18. The front and rear groove walls of the groove are symmetrically provided with guide grooves 22. The guide grooves 22 are inclined downward from top to bottom toward the direction close to the movable rod 18. A guide rod 23 is slidably connected between the two guide grooves 22. A fixed block 24 is fixedly connected to the middle of the guide rod 23. The fixed block 24 is fixedly connected to the movable rod 18. The movable rod 18 is located between the fixed block 24 and the second retaining ring 20 and is sleeved with A second compression spring 25, and the two ends of the second compression spring 25 are fixedly connected to the second stop ring 20 and the two fixed blocks 24 respectively, the outer side of the pressure rod 10 is sleeved with a fixing ring 26, and the distance from the inner side of the fixing ring 26 to the outer side of the pressure rod 10 is equal to the length of the movable block 21, the fixing ring 26 is fixedly connected to the inner wall of the valve cover 2, and the inner side of the fixing ring 26 relative to the two first plug holes is horizontally provided with a second plug hole, and a stop block 27 is slidably inserted in the second plug hole, and the position of the stop block 27 relative to the inclined surface of the movable block 21 is also The first magnetic block 12 and the second magnetic block 19 are designed as inclined surfaces, and the inclined surfaces of the two are parallel to each other. A reset spring 28 is fixedly connected between one end of the stopper 27 located in the second plug hole and the inner wall of the second plug hole, and the maximum elastic force of the reset spring 28 is always smaller than the elastic force of the second clamping spring 25. The magnetic poles of the first magnetic block 12 and the second magnetic block 19 on the opposite side of the electromagnet 14 are opposite, and the attraction between the electromagnet 14 and the first magnetic block 12 and the attraction between the electromagnet 14 and the second magnetic block 19 are respectively larger than the maximum elastic forces of the first clamping spring 16 and the second spring;

[0035] When the controller 3 is in the power-on state, the electromagnet 14 can generate suction force on the first magnetic block 12 and the second magnetic block 19, so that the pressure rod 10 can compress the first compression spring 16 through its lower half, and the movable rod 18 can pull the fixed block 24 upward to compress the second compression spring 25. When the second compression spring 25 is compressed, the two movable blocks 21 can be completely retracted inside the pressure rod 10 under the action of the corresponding guide rods 23 and guide grooves 22. When the controller 3 is in the power-off state, the pressure rod 10 can be in the first compression spring 16. 6, the rubber block 11 and the sealing plate 5 are pressed on the top of the through hole and the connecting pipe 4 respectively, so as to realize the sealing operation of the through hole and the connecting pipe 4. At the same time, when the controller 3 is powered off, the electromagnet 14 no longer generates a pulling force on the movable rod 18 through the second magnetic block 19. At this time, the movable rod 18 can move downward along the mounting hole under the pressure of the second compression spring 25 on the fixed block 24. As the movable rod 18 moves downward, the fixed block 24 can drive the corresponding guide rod 23 to move downward along the guide groove 22, so as to close the through hole and the connecting pipe 4. The cooperation of the guide rod 23 and the guide groove 22 pushes the movable block 21 out of the pressure rod 10, and then when the pressure rod 10 drives the movable block 21 to move downward and contact the stopper 27, as the bottom inclined surface of the movable block 21 and the top inclined surface of the stopper 27 are squeezed against each other, since the maximum elastic force of the return spring 28 is always smaller than the elastic force of the second compression spring 25, the stopper 27 can compress the return spring 28 under the squeeze of the movable block 21 and gradually enter the fixed ring 26. When the stopper 27 is pressed into the fixed block 24, the pressure rod 10 can drive the movable block 21 to move downward and contact the stopper 27. The movable block 21 continues to move downward. When the movable block 21 is located at the bottom of the stopper 27, the stopper 27 can extend out of the second insertion hole under the action of the return spring 28, thereby locking the pressure rod 10 through the limiting effect on the movable block 21. At this time, the sealing plate 5 and the rubber block 11 are also pressed against the top of the connecting pipe 4 and the through hole respectively, so that when the valve body 1 is closed, it is ensured that the sealing plate 5 or the rubber block 11 will not lose the sealing effect on the connecting pipe 4 and the through hole due to insufficient elastic force of the first pressing spring 16, thereby ensuring the sealing performance of the valve body 1;

[0036] When the controller 3 is powered on, as the electromagnet 14 generates suction on the second magnetic block 19, the movable rod 18 can move upward under the action of the suction, and as the movable rod 18 moves upward, the movable rod 18 can pull the fixed block 24 to move upward, and as the fixed block 24 moves upward, the fixed block 24 can drive the guide rod 23 to move upward along the guide groove 22, so that the movable block 21 is pulled back into the pressure rod 10 through the cooperation of the guide rod 23 and the guide groove 22, and then the block 27 no longer locks the pressure rod 10 by restricting the movable block 21, so that the pressure rod 10 can move upward under the suction of the electromagnet 14 on the first magnetic block 12, so that the top of the connecting pipe 4 and the through hole are finally opened.

[0037] like Figure 3 , Figure 4 and Fig. 9 As shown, a plurality of spiral guide strips 29 are distributed in an annular manner on the surface of the guide tube 6 near the bottom end, the guide strip 29 is fixedly connected to the surface of the guide tube 6, and the bottom end of the guide strip 29 is flush with the bottom end of the guide tube 6, the bottom of the guide strip 29 is hinged with a floating plate 30 that matches the torsion and width of the guide strip 29, and the floating plate 30 can only deflect downward, and a lever 31 is vertically fixedly connected to the inner wall of the side surface of the connecting tube 4, and one end of the lever 31 near the guide tube 6 is close to the surface of the guide tube 6, the diameter of the lever 31 is smaller than the length of the floating plate 30, and the top edge of the floating plate 30 is flush with the top edge of the adjacent guide strip 29;

[0038] By providing the guide strip 29, when the guide tube 6 moves downward under the pressure of the rubber block 11 on the sealing plate 5, the bottom surface of the guide strip 29 can contact the free end of the lever 31 from top to bottom. At this time, as the guide tube 6 continues to move downward, the lever 31 can drive the guide tube 6 and the sealing plate 5 to rotate by pushing the bottom surface of the guide strip 29. As the sealing plate 5 rotates, the position of the notch of the connecting sleeve 9 at the top of the sealing plate 5 can be changed, thereby changing the outflow direction of the water flow, so that the water flowing out of the notch can more comprehensively impact the peripheral area of ​​the connecting tube 4, thereby preventing impurities in the water from accumulating in the valve body 1.

[0039] When the lever 31 pushes the guide bar 29, when the lever 31 contacts the guide bar 29 near the top, the sealing plate 5 and the top of the connecting tube 4 remain in contact, and the valve body 1 is in a closed state. When the valve body 1 is opened next time, as the connecting tube 4 moves upward, the lever 31 gradually separates from the current guide bar 29 and contacts the floating plate 30 of the adjacent guide bar 29 from top to bottom. When the lever 31 contacts the floating plate 30, the floating plate 30 can be deflected downward again under the pressure of the lever 31. As the connecting tube 4 continues to move upward, when the floating plate 30 is staggered from the lever 31, the floating plate 30 can be deflected upward under the action of buoyancy. When the floating plate 30 is deflected upward and reset, the free end of the lever 31 is located at the bottom of the floating plate 30. Therefore, when the connecting tube 4 repeats the above-mentioned downward movement operation, the notch of the connecting sleeve 9 can change its position again.

[0040] In addition, during the opening and closing of the valve body 1, the guide tube 6 can rotate a certain angle, thereby preventing the guide tube 6 and the connecting tube 4 from being stuck by impurities or rust in the water, and also preventing impurities or rust from accumulating at the connection between the two.

[0041] like Figure 4 and Fig. 9As shown, a sealing ring 32 is fixedly connected to the bottom of the sealing plate 5, and an annular sealing groove 33 is provided at the top of the connecting pipe 4 opposite to the sealing ring 32, and the sealing ring 32 and the sealing groove 33 match each other;

[0042] By providing the sealing ring 32 , when the sealing plate 5 is attached to the top of the connecting pipe 4 , the sealing ring 32 can be plugged into the sealing groove 33 , thereby improving the sealing performance between the sealing plate 5 and the connecting pipe 4 .

[0043] like Figure 4 and Fig. 9 As shown, the free end of the lever 31 is rotatably sleeved with a swivel 34, and the swivel 34 is opposite to the guide bar 29;

[0044] By providing the rotating ring 34 , when the lever 31 pushes the guide bar 29 from the bottom, the rotating ring 34 can perform rolling friction with the guide bar 29 , thereby reducing the friction between the lever 31 and the guide bar 29 .

[0045] like Figure 6 and Figure 8 As shown, a plurality of rollers 35 are rotatably mounted on the top of the free end of the movable block 21, and the length direction of the rollers 35 is perpendicular to the movement direction of the movable block 21;

[0046] By providing the roller 35, when the movable block 21 slides along the bottom of the stopper 27, the roller 35 can roll along the bottom of the stopper 27, thereby reducing the friction between the movable block 21 and the stopper 27, thereby allowing the movable block 21 to be more smoothly retracted into the pressure rod 10.

[0047] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A six-way normally closed solenoid valve, comprising a valve body (1) and a valve cover (2), characterized in that: The top of the valve cover (2) is connected to a controller (3), both ends of the valve body (1) are provided with connection ports, the top of the valve body (1) is provided with a valve cavity, a connection pipe (4) is vertically fixedly connected to the inner wall of the bottom of the valve cavity, and the top opening of the connection pipe (4) protrudes inward, the side of the connection pipe (4) is connected to one of the connection ports of the valve body (1), the top of the connection pipe (4) is provided with a sealing plate (5), the center of the sealing plate (5) is penetrated by a through hole, the bottom of the through hole is vertically connected to a guide pipe (6), the part of the guide pipe (6) located in the connection pipe (4) is fixedly sleeved with a circular limit plate (7), and the bottom edge of the limit plate (7) is vertically fixedly connected to a plurality of limit rods (8) , a side of the limit rod (8) away from the center of the limit plate (7) is in contact with the inner wall of the connecting pipe (4), the top of the sealing plate (5) is fixedly connected to a connecting sleeve (9), a notch is provided on the side of the connecting sleeve (9), a pressure rod (10) is slidably inserted at the top of the connecting sleeve (9), and the pressure rod (10) is inserted through the valve cover (2), a rubber block (11) is connected to the bottom end of the pressure rod (10), and the diameter of the upper half of the pressure rod (10) is smaller than the diameter of the lower half, a first magnetic block (12) is fixedly connected to the top end of the pressure rod (10), a reset component is slidably sleeved on the outside of the pressure rod (10), a mounting hole is provided at the top axis of the pressure rod (10), and a locking component is arranged in the mounting hole; The reset assembly comprises a sleeve (13), the sleeve (13) is slidably sleeved on the outside of the pressure rod (10), and the sleeve (13) is plugged into the bottom of the controller (3), the top of the sleeve (13) is connected to an electromagnet (14), and the electromagnet (14) and the controller (3) are connected together, a first retaining ring (15) is fixedly connected to the inner wall of the sleeve (13), the first retaining ring (15) is slidably sleeved on the upper half of the pressure rod (10), and a first compression spring (16) is fixedly connected between the bottom of the first retaining ring (15) and the lower half of the pressure rod (10), and a mounting tube (17) is fixedly sleeved on the outside of the sleeve (13), and the mounting tube (17) is threadedly plugged into the top of the valve cover (2); The locking assembly comprises a movable rod (18), the movable rod (18) being slidably inserted into a mounting hole of the pressure rod (10), and the top end of the movable rod (18) being connected to a second magnetic block (19), the movable rod (18) being slidably sleeved with a second retaining ring (20) at a position close to the bottom end, the second retaining ring (20) being fixedly connected to the inner wall of the mounting hole, and first plug holes being symmetrically provided at positions on both sides of the pressure rod (10) opposite to the bottom end of the movable rod (18), and the first plug holes being connected to the mounting hole, and the first plug holes being horizontally slidably inserted into the first plug holes. A movable block (21) is connected, the bottom of the movable block (21) away from the movable rod (18) is designed as an inclined surface, the top of the movable block (21) close to the movable rod (18) has a groove, and guide grooves (22) are symmetrically opened on the front and rear groove walls of the groove, and the guide grooves (22) are inclined downward from top to bottom toward the movable rod (18), and a guide rod (23) is slidably connected between the two guide grooves (22), and a fixed block (24) is fixedly connected to the middle of the guide rod (23). The fixed block (24) is fixedly connected to the movable rod (18); the movable rod (18) is sleeved with a second compression spring (25) at a position between the fixed block (24) and the second retaining ring (20); and the two ends of the second compression spring (25) are respectively fixedly connected to the second retaining ring (20) and the two fixed blocks (24); the pressure rod (10) is sleeved with a fixing ring (26) on the outside; and the distance from the inside of the fixing ring (26) to the outside of the pressure rod (10) is equal to the length of the movable block (21); and the fixing ring (26) is sleeved with the valve cover ( 2) The inner wall is fixedly connected, and a second plug hole is horizontally opened at a position opposite to the two first plug holes on the inner side of the fixed ring (26), and a stopper (27) is slidably inserted in the second plug hole, and the position where the stopper (27) and the movable block (21) are opposite to each other is also designed as an inclined surface, and the inclined surfaces of the two are parallel to each other, and a return spring (28) is fixedly connected between one end of the stopper (27) located in the second plug hole and the inner wall of the second plug hole, and the maximum elastic force of the return spring (28) is always less than the elastic force of the second compression spring (25).

2. A six-way normally closed solenoid valve according to claim 1, characterized in that: A plurality of spiral guide strips (29) are distributed in an annular manner on the surface of the guide tube (6) near the bottom end, the guide strip (29) is fixedly connected to the surface of the guide tube (6), and the bottom end of the guide strip (29) is flush with the bottom end of the guide tube (6), a floating plate (30) matching the torsion and width of the guide strip (29) is hingedly connected to the bottom of the guide strip (29), and the floating plate (30) can only deflect downward, and a lever (31) is vertically fixedly connected to the inner wall of the side surface of the connecting tube (4), one end of the lever (31) near the guide tube (6) is close to the surface of the guide tube (6), the diameter of the lever (31) is smaller than the length of the floating plate (30), and the top edge of the floating plate (30) is flush with the top edge of the adjacent guide strip (29).

3. A six-way normally closed solenoid valve according to claim 2, characterized in that: A sealing ring (32) is fixedly connected to the bottom of the sealing plate (5), and an annular sealing groove (33) is provided at a position of the top of the connecting pipe (4) opposite to the sealing ring (32), and the sealing ring (32) and the sealing groove (33) match each other.

4. A six-way normally closed solenoid valve according to claim 2, characterized in that: A rotating ring (34) is rotatably sleeved at the free end of the shifting rod (31), and the rotating ring (34) is opposite to the guide bar (29).

5. A six-way normally closed solenoid valve according to claim 1, characterized in that: A plurality of rollers (35) are rotatably mounted on the top of the free end of the movable block (21), and the length direction of the rollers (35) is perpendicular to the movement direction of the movable block (21).

6. A six-way normally closed solenoid valve according to claim 1, characterized in that: The magnetic poles of the first magnetic block (12) and the second magnetic block (19) on the side opposite to the electromagnet (14) are opposite, and the attractive force between the electromagnet (14) and the first magnetic block (12) and the attractive force between the electromagnet (14) and the second magnetic block (19) are respectively greater than the maximum elastic force of the first compression spring (16) and the second spring.

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