Electromagnetic switch valve

Abstract

The utility model discloses an electromagnetic switch valve, which comprises a valve body, a liquid inlet pipe, a liquid outlet pipe and a communication area, and the liquid inlet pipe is communicated with the liquid outlet pipe through the communication area. The plunger is used for blocking communication between the communication area and the liquid outlet pipeline; the valve column is used for driving the plunger to move up and down; the first sealing ring is used for sealing between the valve column and the valve body; the positioning assembly is used for positioning the position of the first sealing ring; the electromagnet is used for driving the valve column to move up and down, and a spring is arranged on the electromagnet; after the washing liquid enters the electromagnetic switch valve, due to the fact that the whole valve body is in a sealed state, the washing liquid cannot overflow out of the valve body from a gap between the valve body and the valve column, it is guaranteed that the washing liquid cannot corrode a spring valve element of an external electromagnet in the using process, and the overall service life is longer.

Description

Technical Field

[0001] The utility model belongs to the technical field of electromagnetic switch valves, in particular to an electromagnetic switch valve. Background Art

[0002] When solenoid valves are used in industrial washing machines, they are usually used to control the flow of laundry liquid (or detergent) into the washing machine. These valves are opened or closed by electromagnetic control to ensure that the detergent is introduced into the washing machine at the appropriate time and washing stage.

[0003] However, since the electromagnetic switch valve is driven by a push-pull electromagnet, and a spring is provided on the output end of the electromagnet, the existing electromagnetic switch valve is generally used in conventional (non-corrosive) materials, and its spring valve core will be in contact with the material. In the field of industrial washing machines, the transported liquids (such as detergents) are mostly highly corrosive liquids, and the spring valve core and other metal parts inside the electromagnet are easily corroded and damaged, thereby reducing the overall service life and being inconvenient. Summary of the invention

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions, an electromagnetic switch valve, characterized in that it also includes:

[0005] A valve body, comprising a liquid inlet pipe, a liquid outlet pipe and a communication area, wherein the liquid inlet pipe and the liquid outlet pipe are communicated with each other through the communication area;

[0006] A plunger, which is used to block the connection between the communication area and the liquid outlet pipe;

[0007] A valve stem, which is used to drive the plunger to move up and down;

[0008] A first sealing ring, which is used to seal between the valve stem and the valve body;

[0009] A positioning assembly, used for positioning the first sealing ring;

[0010] An electromagnet is used to drive the valve column to move up and down, and the electromagnet is provided with a spring;

[0011] Wherein, the first sealing ring is arranged in the valve body through a positioning component, the plunger is located in the communication area of ​​the valve body, and the electromagnet is arranged on the valve body to drive the valve column to move up and down through a driving component.

[0012] Furthermore, the valve body comprises:

[0013] A valve cover, the lower end surface of which is provided with a groove;

[0014] The valve seat is located below the valve cover and has a groove on its upper end surface;

[0015] The valve cover and the valve seat are detachably connected via screws, and the communication area is formed by grooves of the valve cover and the valve seat.

[0016] Furthermore, the positioning component includes:

[0017] A gland, used to compress the upper end of the first sealing ring;

[0018] A hollow convex ring, wherein a movable hole is formed through the valve cover, and the hollow convex ring is located in the movable hole and is fixedly connected to the valve cover;

[0019] Among them, a placement groove is formed between the upper side surface of the hollow convex ring and the movable hole, the first sealing ring is located in the placement groove, the pressure cover is spirally arranged on the valve cover, the upper end of the first sealing ring is in contact with the lower end of the pressure cover, and the lower end of the first sealing ring is in contact with the upper end of the hollow convex ring. The valve column is located in the movable hole and is movably arranged on the pressure cover and the hollow convex ring up and down, and the outer surface of the valve column is in contact with the inner ring of the first sealing ring.

[0020] Furthermore, it also includes:

[0021] A second sealing ring, wherein a placement groove is also formed between the lower side of the hollow convex ring and the movable hole, and the second sealing ring is located in the placement groove between the lower side of the hollow convex ring and the movable hole;

[0022] A pressing sleeve, used for pressing the lower end of the second sealing ring;

[0023] Among them, the compression sleeve spiral is arranged at the lower end of the valve cover, the lower end of the second sealing ring is arranged to abut against the upper end of the compression sleeve, the upper end of the second sealing ring is arranged to abut against the lower side surface of the hollow convex ring, the valve column is passed through the compression sleeve, and the outer surface of the valve column is fitted with the inner ring of the second sealing ring.

[0024] Furthermore, the driving assembly includes:

[0025] A driving column, the upper end of which is fixedly connected to the output end of the electromagnet;

[0026] Among them, one end of the valve column protruding from the upper end of the valve body is a threaded column, and the lower end of the driving column is threadedly connected to the upper end of the valve column.

[0027] Furthermore, it also includes:

[0028] An airflow interface is arranged in communication with the liquid inlet pipeline.

[0029] Furthermore, it also includes:

[0030] A baffle plate is used to buffer the liquid hydraulic pressure at the liquid outlet of the liquid inlet pipeline;

[0031] Wherein, a baffle is fixedly arranged in the valve body, the baffle is located in the communication area of ​​the valve body, and the baffle is spaced apart from the communication port between the liquid inlet pipe and the communication area.

[0032] The beneficial effects of the utility model are:

[0033] 1. After the cleaning liquid enters the electromagnetic switch valve, the valve body is in a sealed state as a whole, so that the cleaning liquid will not overflow from the valve body from the gap between the valve body and the valve column, ensuring that the cleaning liquid will not corrode the spring valve core of the external electromagnet during use, making the overall service life longer.

[0034] 2. The valve body is composed of a valve cover and a valve seat, which makes it easy to install components and clean the connecting area, thereby facilitating maintenance.

[0035] 3. By setting up a positioning component, the position of the first sealing ring is positioned so that when the valve column moves up and down, the first sealing ring will not be driven to move upward due to the interference fit with the first sealing ring, but will move relatively on the first sealing ring, so that the valve column can maintain the sealing effect while moving up and down.

[0036] 4. By setting up the second sealing ring, a double sealing effect is achieved, making the sealing effect better, and the setting of the compression sleeve also facilitates the positioning of the second sealing ring.

[0037] 5. By setting up a driving column, it is convenient for the electromagnet to drive the valve column to move through the driving column. When the utility model is installed on the equipment (washing machine), there will be a gap between the upper end of the valve column and the end of the electromagnet, and the driving column plays a role in filling the gap. At the same time, when the gap is different, the valve column and the electromagnet can be smoothly connected by replacing driving columns of different lengths, thereby playing a role in adapting to different spacings.

[0038] 6. By setting up an airflow interface, in actual use, it can be connected to an air compressor or other equipment that generates power or transmits gas through an air pipe. After the washing liquid enters through the liquid inlet pipe and is output through the liquid outlet pipe, the air compressor can be started to blow the airflow to the liquid inlet pipe to clean the residual washing liquid in the liquid inlet pipe, the connecting area and the liquid outlet pipe to avoid washing liquid residue.

[0039] 7. By setting up the baffle plate, after the washing liquid enters the connecting area through the first connecting hole, it will contact the baffle plate, and will not impact the valve column and the gland due to excessive hydraulic pressure, thus avoiding wear of components and playing a buffering role. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Attached Figure 1The structural diagram of the valve body;

[0041] Attached Figure 2 is a top view of the valve body;

[0042] Attached Figure 3 For attachment Figure 2 Schematic cross-sectional view of AA in the figure;

[0043] Attached Figure 4 For attachment Figure 3 A magnified schematic diagram of middle C;

[0044] Attached Figure 5 For attachment Figure 2 A schematic cross-sectional view of the middle BB;

[0045] Attached Figure 6 The structural diagram after adding air flow interface to the valve body;

[0046] Attached Figure 7 For attachment Figure 3 Schematic diagram after adding electromagnet;

[0047] Explanation of the reference numerals: 1. valve body, 2. liquid inlet pipe, 3. liquid outlet pipe, 4. connecting area, 5. plunger, 6. valve column, 7. first sealing ring, 8. valve cover, 9. valve seat, 10. pressure cover, 11. hollow convex ring, 12. movable hole, 13. placement groove, 14. second sealing ring, 15. pressure sleeve, 16. driving column, 17. air flow interface, 18. baffle, 19. first connecting hole, 20. second connecting hole, 21. sealing gasket, 22. electromagnet, 23. spring, 24. coil, 25. fixed iron core, 26. moving iron core. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work belong to the scope of protection of the present application. In the description of the present application, it should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and devices known to ordinary technicians in the relevant fields may not be discussed in detail, but in appropriate cases, the techniques, methods and devices should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of the exemplary embodiments may have different values, and it should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in the subsequent drawings. Example 1

[0049] This embodiment provides a solenoid switch valve, characterized in that it also includes:

[0050] A valve body 1, which has a liquid inlet pipe 2, a liquid outlet pipe 3 and a communication area 4, wherein the liquid inlet pipe 2 and the liquid outlet pipe 3 are connected through the communication area 4;

[0051] A plunger 5, which is used to block the connection between the communication area 4 and the liquid outlet pipe 3;

[0052] A valve rod 6, which is used to drive the plunger 5 to move up and down;

[0053] A first sealing ring 7, which is used to seal between the valve column 6 and the valve body 1;

[0054] A positioning component, used for positioning the first sealing ring 7;

[0055] The electromagnet 22 is used to drive the valve column 6 to move up and down, and the electromagnet 22 has a spring;

[0056] The first sealing ring 7 is arranged in the valve body 1 through a positioning assembly, the plunger 5 is located in the communication area 4 of the valve body 1, and the electromagnet 22 is arranged on the valve body 1 to drive the valve column 6 to move up and down through a driving assembly.

[0057] In the present technical solution, when in use, first connect the pipe for inputting washing liquid to the liquid inlet pipe 2 of the valve body 1, then connect the pipe for outputting washing liquid to the liquid outlet pipe 3 of the valve body 1, and connect the push-pull type electromagnet 22 (as shown in the attached figure) to the valve body 1. Figure 7 As shown, there are coils 24, springs 23, fixed iron cores 25, and movable iron cores 26 inside. The working principle of the push-pull electromagnet 22 is the prior art, and no further elaboration is made here. The output shaft is connected to the valve column 6 through a drive assembly, and the electromagnet 22 and the valve body 1 are fixed on the device;

[0058] When the washing machine is started, the washing liquid is input into the liquid inlet pipe 2 of the valve body 1 through the pipe. The valve body 1 is provided with a first communication hole 19 for connecting the liquid inlet pipe 2 with the communication area 4 and a second communication hole 20 for connecting the liquid outlet pipe 3 with the communication area 4.

[0059] The washing liquid in the liquid inlet pipe 2 enters the communication area 4 of the valve body 1 through the first communication hole 19, and then the electromagnet 22 is started. The electromagnet 22 drives the valve column 6 to move upward through the driving component. Since the first sealing ring 7 is arranged in the valve body 1 through the positioning component, and the valve column 6 and the valve body 1 are sealed and connected by the first sealing ring 7, when the valve column 6 moves up and down, it will not drive the first sealing ring 7 to move up and down, but keep in contact with the first sealing ring 7 while moving relative to the position of the first sealing ring 7 on the valve body 1. In this way, it is ensured that after the washing liquid enters the communication area 4 of the valve body 1, it will not overflow from the gap between the valve column 6 and the valve body 1 to the outside of the valve body 1 to corrode the spring and other components of the electromagnet 22;

[0060] Since the plunger 5 is used to block the connection between the communication area 4 and the liquid outlet pipe 3, under normal conditions, the plunger 5 blocks the second communication hole 20, and a sealing gasket 21 is provided on the plunger 5. Under normal conditions, the sealing gasket 21 of the plunger 5 is tightly fitted with the opening of the second communication hole 20. Therefore, after the electromagnet 22 drives the valve column 6 to move upward through the driving component, the valve column 6 will drive the plunger 5 to move upward. After the valve column 6 moves upward, it will drive the plunger 5 to move upward, thereby releasing the blockage of the second communication hole 20, so that the washing liquid entering the communication area 4 enters the liquid outlet pipe 3 from the second communication hole 20, thereby outputting the washing liquid;

[0061] The valve body 1, valve column 6 and plunger 5 are all made of tetrafluoroethylene plastic to avoid corrosion.

[0062] Through this structural design, after the cleaning liquid enters the electromagnetic switch valve, since the valve body 1 is in a sealed state as a whole, the cleaning liquid will not overflow the valve body 1 from the gap between the valve body 1 and the valve column 6, ensuring that during use, the cleaning liquid will not corrode the spring valve core of the external electromagnet 22, thereby extending the overall service life. Example 2

[0063] This embodiment provides an electromagnetic switch valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0064] Furthermore, the valve body 1 comprises:

[0065] The valve cover 8 has a groove on its lower end surface;

[0066] The valve seat 9 is located below the valve cover 8, and a groove is also formed on its upper end surface;

[0067] The valve cover 8 and the valve seat 9 are detachably connected via screws, and the communication area 4 is formed by grooves of the valve cover 8 and the valve seat 9 .

[0068] In the present technical solution, the valve body 1 is composed of a valve cover 8 and a valve seat 9. In actual use, a sealing gasket 21 is also provided between the valve body 1 and the valve cover 8 to ensure the sealing effect after the valve cover 8 and the valve seat 9 are installed. The valve body 1 and the valve cover 8 are detachably connected by screws, and the communication area 4 is formed by the grooves of the valve cover 8 and the valve seat 9. Since the plunger 5 and other components are located in the communication area 4, the detachable connection design facilitates the installation of the valve column 6 and the cleaning of the communication area 4.

[0069] At the same time, if the first communicating hole 19 or the second communicating hole 20 is clogged due to long-term use, it can also be unblocked by disassembling the valve body 1, which is convenient for maintenance of the utility model.

[0070] Through this structural design, by arranging the valve body 1 to be composed of the valve cover 8 and the valve seat 9, it is convenient to install the components and to clean the connecting area 4, thereby achieving the effect of facilitating maintenance. Example 3

[0071] This embodiment provides an electromagnetic switch valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0072] Furthermore, the positioning component includes:

[0073] A gland 10, which is used to compress the upper end of the first sealing ring 7;

[0074] A hollow convex ring 11, a movable hole 12 is formed through the valve cover 8, and the hollow convex ring 11 is located in the movable hole 12 and is fixedly connected to the valve cover 8;

[0075] Among them, a placement groove 13 is formed between the upper side surface of the hollow convex ring 11 and the movable hole 12, the first sealing ring 7 is located in the placement groove 13, the pressure cover 10 is spirally set on the valve cover 8, the upper end of the first sealing ring 7 is in contact with the lower end of the pressure cover 10, and the lower end of the first sealing ring 7 is in contact with the upper end of the hollow convex ring 11. The valve column 6 is located in the movable hole 12 and is movably arranged on the pressure cover 10 and the hollow convex ring 11 up and down. The outer surface of the valve column 6 fits with the inner ring of the first sealing ring 7.

[0076] In the present technical solution, during installation, the valve cover 8 and the valve seat 9 are still separated. The first sealing ring 7 is first placed in the placement groove 13 so that the lower end of the first sealing ring 7 contacts the upper end of the hollow convex ring 11, and then the gland 10 is screwed in. The gland 10 moves downward through the threaded transmission until the lower end surface of the gland 10 contacts the upper end of the first sealing ring 7. The positioning of the first sealing ring 7 is completed, and then the valve column 6 is inserted from the lower end of the valve cover 8. At this time, the inner diameter of the first sealing ring 7 is smaller than the outer diameter of the valve column 6.

[0077] Insert the upper end of the valve stem 6 toward the first sealing ring 7, and then drip lubricating oil from the top of the valve cover 8. Through the lubricating oil and the force applied to the valve stem 6, the valve stem 6 is inserted into the inner ring of the first sealing ring 7. At this time, the first sealing ring 7 will be deformed, and the elastic force of the rubber material will firmly make the first sealing ring 7 and the valve stem 6 fit together;

[0078] After the valve stem 6 is inserted into the inner ring of the first sealing ring 7, the first sealing ring 7 will expand, and the normal outer diameter of the first sealing ring 7 matches the movable hole 12, so that the outer ring of the expanded first sealing ring 7 will fit with the movable hole 12, so that the inner and outer rings of the first sealing ring 7 fit with the valve stem 6 and the valve cover 8 respectively, thereby completing the seal between the valve stem 6 and the valve cover 8, and then the valve stem 6 continues to be inserted upward, passes through the gland 10 and extends out of the upper end of the valve cover 8, and the gland 10 is also provided with a through hole for the valve stem 6 to pass through;

[0079] The arrangement of the hollow convex ring 11 and the pressure cover 10 limits the up and down movement of the first sealing ring 7, so that when the electromagnet 22 drives the valve column 6 to move upward through the driving assembly, the valve column 6 will not drive the first sealing ring 7 to move upward due to the interference fit with the first sealing ring 7, but will move relatively on the first sealing ring 7, so that the valve column 6 can maintain the sealing effect while moving up and down.

[0080] Through this structural design, by setting up a positioning component, the position of the first sealing ring 7 is positioned, so that when the valve column 6 moves up and down, the first sealing ring 7 will not be driven to move upward due to the interference fit with the first sealing ring 7, but will move relatively on the first sealing ring 7, so that the valve column 6 can maintain the sealing effect while moving up and down. Example 4

[0081] This embodiment provides an electromagnetic switch valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0082] Furthermore, it also includes:

[0083] A second sealing ring 14, a placement groove 13 is also formed between the lower side of the hollow convex ring 11 and the movable hole 12, and the second sealing ring 14 is located in the placement groove 13 between the lower side of the hollow convex ring 11 and the movable hole 12;

[0084] The pressing sleeve 15 is used to press the lower end of the second sealing ring 14;

[0085] Among them, the pressing sleeve 15 is spirally arranged on the lower end of the valve cover 8, the lower end of the second sealing ring 14 is abutted against the upper end of the pressing sleeve 15, the upper end of the second sealing ring 14 is abutted against the lower side surface of the hollow convex ring 11, the valve column 6 is inserted into the pressing sleeve 15, and the outer surface of the valve column 6 is in contact with the inner ring of the second sealing ring 14.

[0086] In the present technical solution, a second sealing ring 14 is provided, and the second sealing ring 14 is limited by a pressing sleeve 15. When the second sealing ring 14 needs to be installed, the installation method described in Example 3 is the same in principle. First, the second sealing ring 14 is inserted into the placement groove 13 between the lower side of the hollow convex ring 11 and the movable hole 12, so that the upper end of the second sealing ring 14 is in contact with the lower side of the hollow convex ring 11, and then the pressing sleeve 15 is screwed into the lower end of the valve cover 8, and the pressing sleeve 15 is tightened until the upper end of the pressing sleeve 15 is in contact with the lower end of the second sealing ring 14, so that the second sealing ring 14 can be positioned. The method of how to seal the valve cover 8 and the valve column 6 through the second sealing ring 14 is referred to Example 3, and the principle is the same as the first sealing ring 7;

[0087] A through hole is also provided on the pressing sleeve 15 for the valve column 6 to pass through. When installing, the valve column 6 is inserted from the lower end of the valve cover 8 toward the through hole of the pressing sleeve 15, and passes through the through hole of the pressing sleeve 15, the second sealing ring 14, the hollow convex ring 11, the first sealing ring 7 and the through hole of the pressing cover 10 in sequence until it passes through the upper end of the valve cover 8. During this period, lubricating oil is used to cooperate to ensure a smooth insertion process.

[0088] Through this structural design, by providing the second sealing ring 14 , a double sealing effect is achieved, so that the sealing effect is better, and the arrangement of the pressing sleeve 15 also facilitates the positioning of the second sealing ring 14 . Example 5

[0089] This embodiment provides an electromagnetic switch valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0090] Furthermore, the driving assembly includes:

[0091] A driving column 16, the upper end of which is fixedly connected to the output end of the electromagnet 22;

[0092] Among them, one end of the valve column 6 protruding from the upper end of the valve body 1 is a threaded column, and the lower end of the driving column 16 is threadedly connected to the upper end of the valve column 6.

[0093] In the present technical solution, a driving column 16 is provided. During installation, the valve column 6 sequentially passes through the through hole of the pressing sleeve 15, the second sealing ring 14, the hollow convex ring 11, the first sealing ring 7 and the through hole of the gland 10 until it passes through the upper end of the valve cover 8. Then, the driving column 16 can be screwed in, so that the driving column 16 is threadedly connected with the upper end of the valve column 6.

[0094] The driving column 16 is the output end of the electromagnet 22, that is, the moving iron core 26. When it is necessary to drive the valve column 6 to move upward, the electromagnet 22 is started, and the push-pull rod of the electromagnet 22 contracts due to the magnetic force, which can drive the driving column 16 to move upward, thereby driving the valve column 6 to move upward, and driving the plunger 5 to release the blockage of the second connecting hole 20.

[0095] Through this structural design, by setting up the driving column 16, it is convenient for the electromagnet 22 to drive the valve column 6 to move through the driving column 16. When the utility model is installed on the equipment (washing machine), there will be a gap between the upper end of the valve column 6 and the end of the electromagnet 22, and the driving column 16 plays a role in filling the gap. At the same time, when the gap is different, the valve column 6 and the electromagnet 22 can be smoothly connected by replacing the driving column 16 with different length specifications, thereby playing a role in adapting to different spacings. Example 6

[0096] This embodiment provides an electromagnetic switch valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0097] Furthermore, it also includes:

[0098] The airflow interface 17 is connected to the liquid inlet pipeline 2.

[0099] In the present technical solution, an air flow interface 17 is provided. When in use, the air flow interface 17 is connected to an air compressor or other equipment that generates power or transmits gas (the air compressor is a prior art and will not be described in detail here) through an air pipe. After the washing liquid enters through the liquid inlet pipe 2 and is output through the liquid outlet pipe 3, the air compressor can be started to blow the air flow toward the liquid inlet pipe 2 to clean the residual washing liquid in the liquid inlet pipe 2, the connecting area 4 and the liquid outlet pipe 3.

[0100] Through this structural design, by setting up the airflow interface 17, in actual use, it can be connected to an air compressor or other equipment that generates power or transmits gas through an air pipe. After the washing liquid enters through the liquid inlet pipe 2 and is output through the liquid outlet pipe 3, the air compressor can be started, and the airflow is blown to the liquid inlet pipe 2 to blow away the residual washing liquid in the liquid inlet pipe 2, the connecting area 4 and the liquid outlet pipe 3 to avoid washing liquid residue. Example 7

[0101] This embodiment provides an electromagnetic switch valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0102] Furthermore, it also includes:

[0103] The baffle 18 is used to buffer the liquid hydraulic pressure of the liquid outlet of the liquid inlet pipe 2;

[0104] A baffle plate 18 is fixedly disposed in the valve body 1 . The baffle plate 18 is located in the communication area 4 of the valve body 1 . The baffle plate 18 is spaced apart from the communication port between the liquid inlet pipe 2 and the communication area 4 .

[0105] In the present technical solution, the baffle plate 18 is located directly above the first communicating hole 19, one end of the baffle plate 18 is fixedly connected to the lower end of the valve body 1, and the other end of the baffle plate 18 is inclined downward toward the second communicating hole 20;

[0106] Through this structural design, by setting the baffle plate 18, after the washing liquid enters the connecting area 4 through the first connecting hole 19, it will contact the baffle plate 18, and will not impact the valve column 6 and the pressure cover 10 due to excessive hydraulic pressure, thereby avoiding component wear and playing a buffering role.

[0107] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the specification of the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A solenoid switch valve, characterized in that: Also includes: A valve body (1) comprising a liquid inlet pipe (2), a liquid outlet pipe (3) and a communication area (4), wherein the liquid inlet pipe (2) and the liquid outlet pipe (3) are connected via the communication area (4); A plunger (5) used to block the connection between the communication area (4) and the liquid outlet pipe (3); A valve rod (6) for driving the plunger (5) to move up and down; A first sealing ring (7) used for sealing between the valve column (6) and the valve body (1); An electromagnet (22) is used to drive the valve rod (6) to move up and down, and the electromagnet (22) has a spring; A positioning assembly, used to position the first sealing ring (7); The first sealing ring (7) is arranged in the valve body (1) through a positioning assembly, the plunger (5) is located in the communication area (4) of the valve body (1), and the electromagnet (22) is arranged on the valve body (1) to drive the valve column (6) to move up and down through a driving assembly.

2. The electromagnetic switch valve according to claim 1, characterized in that: The valve body (1) comprises: A valve cover (8) having a groove formed on its lower end surface; The valve seat (9) is located below the valve cover (8) and has an upper end surface with a groove; The valve cover (8) and the valve seat (9) are detachably connected via screws, and the communication area (4) is formed by grooves of the valve cover (8) and the valve seat (9).

3. The electromagnetic switch valve according to claim 2, characterized in that: The positioning component comprises: A gland (10) for pressing the upper end of the first sealing ring (7); A hollow convex ring (11), wherein a movable hole (12) is formed through the valve cover (8), and the hollow convex ring (11) is located in the movable hole (12) and is fixedly connected to the valve cover (8); A placement groove (13) is formed between the upper side surface of the hollow convex ring (11) and the movable hole (12), the first sealing ring (7) is located in the placement groove (13), the gland (10) is spirally arranged on the valve cover (8), the upper end of the first sealing ring (7) abuts against the lower end of the gland (10), the lower end of the first sealing ring (7) abuts against the upper end of the hollow convex ring (11), the valve column (6) is located in the movable hole (12) and is movably arranged on the gland (10) and the hollow convex ring (11) up and down, and the outer surface of the valve column (6) is in contact with the inner ring of the first sealing ring (7).

4. The electromagnetic switch valve according to claim 3, characterized in that: Also includes: A second sealing ring (14), wherein a placement groove (13) is also formed between the lower side surface of the hollow convex ring (11) and the movable hole (12), and the second sealing ring (14) is located in the placement groove (13) between the lower side surface of the hollow convex ring (11) and the movable hole (12); A pressing sleeve (15) for pressing the lower end of the second sealing ring (14); The pressing sleeve (15) is spirally arranged on the lower end of the valve cover (8), the lower end of the second sealing ring (14) is arranged to abut against the upper end of the pressing sleeve (15), the upper end of the second sealing ring (14) is arranged to abut against the lower side surface of the hollow convex ring (11), the valve column (6) is inserted into the pressing sleeve (15), and the outer surface of the valve column (6) is in contact with the inner ring of the second sealing ring (14).

5. The electromagnetic switch valve according to any one of claims 1 to 4, characterized in that: The drive assembly comprises: A driving column (16), the upper end of which is fixedly connected to the output end of the electromagnet (22); The end of the valve column (6) protruding from the upper end of the valve body (1) is a threaded column, and the lower end of the drive column (16) is threadedly connected to the upper end of the valve column (6).

6. The electromagnetic switch valve according to any one of claims 1 to 4, characterized in that: Also includes: An airflow interface (17), wherein the airflow interface (17) is arranged in communication with the liquid inlet pipeline (2).

7. The electromagnetic switch valve according to any one of claims 1 to 4, characterized in that: Also includes: A baffle (18) for buffering the hydraulic pressure of the liquid at the liquid outlet of the liquid inlet pipe (2); A baffle plate (18) is fixedly arranged in the valve body (1), the baffle plate (18) is located in the communication area (4) of the valve body (1), and the baffle plate (18) is spaced apart from the communication port between the liquid inlet pipe (2) and the communication area (4).

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