Solenoid valve and water outlet device

Abstract

The application discloses an electromagnetic valve and a water outlet device. The electromagnetic valve comprises a valve body assembly, a diaphragm assembly and a magnetic assembly. The valve body assembly is provided with a mounting cavity, a liquid inlet cavity and a liquid outlet cavity which are connected with each other. The diaphragm assembly is movably arranged in the mounting cavity. The magnetic assembly is slidably arranged in the mounting cavity and on the side of the diaphragm assembly away from the liquid outlet cavity. The magnetic assembly is provided with a first section and a second section which are connected with each other. The second section is arranged between the first section and the diaphragm assembly. The first section is made of a magnetic material. The density of the second section is smaller than that of the first section. A first elastic member is connected between the magnetic assembly and the valve body assembly. When the electromagnetic valve is powered off, the first elastic member drives the magnetic assembly to abut against the diaphragm assembly so as to make the diaphragm assembly separate the liquid inlet cavity from the liquid outlet cavity. When the electromagnetic valve is powered on, the magnetic assembly moves away from the liquid outlet cavity and is separated from the diaphragm assembly. The diaphragm assembly moves towards the magnetic assembly so as to make the liquid inlet cavity communicate with the liquid outlet cavity. The technical scheme prolongs the service life of the electromagnetic valve.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valves, in particular to an electromagnetic valve and a water outlet device. BACKGROUND

[0002] With the in-depth development of intelligence and automation, the valve body assembly of the electric control switch is applied more and more widely on the fluid conveying equipment. The electromagnetic valve controls the opening and closing of the valve by controlling the energization of the coil to attract the iron core or the de-energization to release the iron core.

[0003] The electromagnetic valve comprises a valve body assembly, a diaphragm assembly and a magnetic isolation pipe. The valve body assembly is provided with a cavity. The diaphragm assembly is arranged in the cavity and divides the cavity into an upper cavity and a lower cavity. The lower cavity comprises a water outlet cavity and a water inlet cavity. The water outlet cavity is connected with a main valve port. A pilot hole and a pilot port are arranged on the diaphragm assembly. The pilot hole communicates the upper cavity with the water inlet cavity. The pilot port communicates the upper cavity with the water outlet cavity. The magnetic isolation pipe is arranged above the diaphragm assembly. The inner periphery of the magnetic isolation pipe and the diaphragm assembly enclose the upper cavity. A spring is arranged at the end of the inner periphery of the magnetic isolation pipe away from the diaphragm assembly. The end of the spring close to the diaphragm assembly is connected with a movable iron core. The end of the movable iron core close to the diaphragm assembly is connected with a sealing element. The sealing element is in sealing connection with the diaphragm assembly and seals the pilot port on the diaphragm assembly when not energized. The energy consumption required for the opening and closing of the valve is saved through the pilot structure.

[0004] However, if the axial direction of the coil is not installed along the vertical direction during installation of the electromagnetic valve, the service life of the electromagnetic valve will be shortened. SUMMARY

[0005] The main purpose of the present application is to provide an electromagnetic valve which aims to prolong the service life of the electromagnetic valve.

[0006] To achieve the above-mentioned purpose, the electromagnetic valve provided by the present application comprises:

[0007] A valve body assembly is provided with an installation cavity, a liquid inlet cavity and a liquid outlet cavity which are connected in communication.

[0008] A diaphragm assembly is movably arranged in the installation cavity to separate or connect the liquid inlet cavity and the liquid outlet cavity.

[0009] A magnetic attraction assembly is slidably arranged in the installation cavity and on the side of the diaphragm assembly away from the liquid outlet cavity. The magnetic attraction assembly has a first section and a second section which are connected in series. The second section is arranged between the first section and the diaphragm assembly. The material of the first section is a magnetic material. The density of the second section is less than that of the first section.

[0010] A first elastic member is arranged in the mounting cavity and connected to the magnetic assembly and the valve body assembly. When the electromagnetic valve is powered off, the first elastic member drives the magnetic assembly to abut against the diaphragm assembly so as to make the diaphragm assembly cut off the liquid inlet cavity and the liquid outlet cavity. When the electromagnetic valve is powered on, the magnetic assembly moves away from the liquid outlet cavity and separates from the diaphragm assembly, and the diaphragm assembly moves towards the magnetic assembly under the action of the pressure in the liquid inlet cavity so as to make the liquid inlet cavity communicate with the liquid outlet cavity.

[0011] Optionally, the magnetic assembly comprises:

[0012] A first magnetic member is slidingly arranged in the mounting cavity, and the first magnetic member forms the first section. The first elastic member is connected to the first magnetic member and the valve body assembly.

[0013] A guide column has a first end connected to the first magnetic member and a second end extending towards the diaphragm assembly. The guide column forms the second section.

[0014] Optionally, the guide column is provided with a weight-reducing hole.

[0015] Optionally, the guide column comprises:

[0016] A hollow tube has a hollow channel penetrating through the hollow tube along an axial direction. The hollow channel forms the weight-reducing hole, and the first magnetic member is partially embedded in a first end of the hollow tube.

[0017] Optionally, the guide column further comprises:

[0018] A first guide rib is arranged on the outer periphery of the hollow tube and extends along the axial direction of the hollow tube. A plurality of first guide ribs are arranged along the circumferential direction of the hollow tube at equal intervals.

[0019] Optionally, a plurality of the first guide ribs form a guide rib group, and each guide rib group comprises two first guide ribs arranged oppositely.

[0020] Optionally, the diaphragm assembly divides the mounting cavity into a first sub-cavity and a second sub-cavity. The hollow tube, the first magnetic member and the first elastic member are arranged in the first sub-cavity. The second sub-cavity communicates the liquid inlet cavity and the liquid outlet cavity. The diaphragm assembly is further provided with a first pilot hole and a second pilot hole. The first pilot hole communicates the liquid inlet cavity and the first sub-cavity, and the second pilot hole communicates the first sub-cavity and the liquid outlet cavity. When the electromagnetic valve is powered off, the hollow tube abuts against the diaphragm assembly and closes the second pilot hole. When the electromagnetic valve is powered on, the hollow tube separates from the diaphragm assembly and opens the second pilot hole.

[0021] Optionally, the magnetic attraction assembly further comprises:

[0022] a sealing member arranged at the second end of the hollow tube, the hollow tube closing the second pilot hole through the sealing member.

[0023] Optionally, the sealing member is in sliding connection with the inner wall of the hollow channel, and the magnetic attraction assembly further comprises a second elastic member arranged inside the hollow channel, the second elastic member being in elastic connection with the sealing member and the first magnetic attraction member and having a tendency to move the sealing member away from the first magnetic attraction member.

[0024] Optionally, the guide column further comprises an end stop arranged at the second end of the hollow tube, one end of the end stop being fixed to the inner wall of the hollow channel and the other end of the end stop extending towards the inside of the hollow channel, the end stop being in interference fit with the sealing member to block the sealing member from coming out of the hollow channel.

[0025] Optionally, the electromagnetic valve further comprises:

[0026] a positioning member slidingly arranged in the mounting cavity, the positioning member being provided with a sliding channel, the magnetic attraction assembly being slidingly arranged inside the sliding channel, and the diaphragm assembly being in abutment with the positioning member when the electromagnetic valve is powered on.

[0027] a driving assembly drivingly connected to the positioning member to move the positioning member towards or away from the diaphragm assembly.

[0028] Optionally, the driving assembly comprises:

[0029] a driving member having a fixed end and an output end, the fixed end being connected to the valve body assembly, the output end being capable of linear reciprocating motion, and the output end being drivingly connected to a first end of the positioning member.

[0030] Optionally, the driving assembly further comprises:

[0031] a transmission member arranged in the mounting cavity, a first end of the transmission member being drivingly connected to the driving member, and a second end of the transmission member extending towards the positioning member;

[0032] a third elastic member connecting a second end of the positioning member and the diaphragm assembly and having a tendency to move the positioning member away from the diaphragm assembly.

[0033] Optionally, the transmission member comprises:

[0034] a connecting portion sleeved on the output end;

[0035] A support portion, one end of the support portion is fixed to the connecting portion, the other end of the support portion extends towards the positioning member.

[0036] Optionally, the valve body assembly comprises:

[0037] A first valve body, provided with the liquid inlet cavity and the liquid outlet cavity;

[0038] A first magnetic isolation member, provided with a first installation space, the first magnetic isolation member is combined with the first valve body so that the first installation space forms the installation cavity, the fixed end is arranged outside the first installation space, the output end extends into the first installation space, the transmission member and the positioning member are arranged inside the first installation space, and the first elastic member connects the first magnetic isolation member and the magnetic attraction assembly;

[0039] A first magnet group, sleeved on the outer periphery of the first magnetic isolation member;

[0040] A first coil, sleeved on the outer periphery of the first magnet group.

[0041] Optionally, the first magnetic isolation member comprises:

[0042] A first magnetic isolation tube, provided with the first installation space;

[0043] A partition plate, arranged inside the first installation space, the connecting portion and the positioning member are arranged on both sides of the partition plate, the support portion is movably arranged in the partition plate, and the first elastic member connects the partition plate and the magnetic attraction assembly.

[0044] Optionally, the drive assembly further comprises a sealing ring, the sealing ring is sleeved on the connecting portion, and the sealing ring seals the connecting portion and the first magnetic isolation tube; and / or,

[0045] The first magnetic isolation member is further provided with a limiting column, the limiting column is arranged on one side of the partition plate towards the magnetic attraction assembly, and the first elastic member is sleeved on the limiting column.

[0046] Optionally, the support portion is provided with a plurality of support portions, and the plurality of support portions are arranged at intervals along the circumference of the connecting portion.

[0047] Optionally, the positioning member comprises:

[0048] A first pipe body, provided with a first sub-channel;

[0049] A second tube body is arranged at one end of the first tube body towards the diaphragm assembly, and the second tube body is provided with a second sub-channel. The first sub-channel and the second sub-channel are communicated to form the sliding channel. The inner diameter of the second sub-channel is larger than the inner diameter of the first sub-channel to form a stepped structure. The third elastic member is arranged inside the second sub-channel and connected to the stepped structure and the diaphragm assembly.

[0050] Optionally, the positioning member further comprises:

[0051] A second guide rib is arranged on the outer periphery of the first tube body and extends along the axial direction of the first tube body. A plurality of second guide ribs are arranged along the circumferential direction of the first tube body at equal intervals.

[0052] Optionally, the driving assembly comprises:

[0053] A second magnetic attraction member is arranged at one end of the positioning member away from the diaphragm assembly. The first elastic member is connected to the second magnetic attraction member and the magnetic attraction assembly.

[0054] A fourth elastic member is connected to the second magnetic attraction member and the valve body assembly, and has a tendency to move the second magnetic attraction member towards the diaphragm assembly.

[0055] A fifth elastic member is arranged at one end of the positioning member close to the diaphragm assembly, and is connected to the positioning member and the valve body assembly. The fifth elastic member has a tendency to move the positioning member towards the diaphragm assembly.

[0056] Optionally, the valve body assembly comprises:

[0057] A second valve body is provided with the liquid inlet cavity and the liquid outlet cavity.

[0058] A second magnetic isolation member is provided with a second mounting space. The second magnetic isolation member is combined with the second valve body to form the mounting cavity with the second mounting space. The fourth elastic member, the second magnetic attraction member, and the positioning member are arranged inside the second mounting space. The fourth elastic member is connected to the second magnetic attraction member, and the fifth elastic member is connected to the positioning member.

[0059] A second magnet group is sleeved on the outer periphery of the second magnetic isolation member.

[0060] A second coil is sleeved on the outer periphery of the second magnet group.

[0061] Optionally, the positioning member comprises:

[0062] A third tube body is provided with the sliding channel. The second magnetic attraction member is arranged at one end of the third tube body away from the diaphragm assembly.

[0063] A stopper is arranged on the third tube body near one end of the diaphragm assembly and on the outer periphery of the third tube body, the fifth elastic member is sleeved on the third tube body and connects the stopper and the second magnetic separation member.

[0064] Optionally, the positioning member further comprises third guide ribs arranged on the outer periphery of the third tube body and extending along the axial direction of the third tube body, and a plurality of third guide ribs are arranged along the circumferential direction of the third tube body at equal intervals, and / or,

[0065] The positioning member further comprises a limiting portion, the stopper is arranged on the outer periphery of the third tube body, and the limiting portion is arranged on the circumferential edge of the stopper and located on the side of the stopper away from the diaphragm assembly.

[0066] Optionally, the electromagnetic valve further comprises a flow meter, the flow meter is provided with a flow detection channel, the flow meter is connected with the valve body assembly, and the flow detection channel is in communication with the liquid outlet cavity, and the liquid in the liquid outlet cavity exits the electromagnetic valve through the flow detection channel.

[0067] The application further provides a water outlet device comprising the above electromagnetic valve.

[0068] The electromagnetic valve in one technical scheme of the embodiment of the present application comprises a valve body assembly, a diaphragm assembly, a magnetic attraction assembly and a first elastic member. The diaphragm assembly and the magnetic attraction assembly can slide. The first elastic member connects the magnetic attraction assembly and the valve body assembly. When the electromagnetic valve is powered, the coil of the valve body assembly attracts the magnetic attraction assembly, so that the magnetic attraction assembly moves away from the diaphragm assembly and the first elastic member is deformed. The magnetic attraction assembly is separated from the diaphragm assembly. The diaphragm assembly moves towards the magnetic attraction assembly under the action of the liquid pressure in the liquid inlet cavity, so that the liquid inlet cavity and the liquid outlet cavity are communicated, and the liquid flows from the liquid inlet cavity to the liquid outlet cavity. When the electromagnetic valve is powered off, the first elastic member restores its deformation, drives the magnetic attraction assembly to move and abut against the diaphragm assembly, so that the diaphragm assembly resets to separate the liquid inlet cavity and the liquid outlet cavity. The magnetic attraction assembly has a first section and a second section. The material of the first section is a magnetic material, which can be iron, cobalt, nickel or the like, and is generally iron. When the electromagnetic valve is powered, the first section can be attracted by the magnetic force of the coil and move. The density of the second section is smaller than that of the first section. The material of the second section can be plastic, resin, carbon fiber or the like. The density of the second section is small, and the mass of the second section is much smaller than that of the magnetic material in the same volume. When the coil of the electromagnetic valve is installed in a non-vertical state, the degree of eccentricity of the magnetic attraction assembly affected by its own gravity is small. At the same time, the gravity is reduced, so that the normal pressure between the magnetic attraction assembly and the valve body assembly is small, and the friction between the magnetic attraction assembly and the valve body assembly is also reduced, thereby reducing the mutual wear between the magnetic attraction assembly and the valve body assembly, and prolonging the service life of the electromagnetic valve. On the other hand, the magnetic attraction assembly has a small weight, and the first elastic member exerts a small force when driving the magnetic attraction assembly. Therefore, the service life of the first elastic member can be prolonged, and a smaller first elastic member can be used, thereby reducing the cost. BRIEF DESCRIPTION OF DRAWINGS

[0069] In order to more clearly illustrate the technical schemes in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings shown.

[0070] Figure 1 A sectional view of an embodiment of the electromagnetic valve of the present application Figure 1 ;

[0071] Figure 2 A sectional view of an embodiment of the electromagnetic valve of the present application Figure 1 ;

[0072] Figure 3 A sectional view of an embodiment of the electromagnetic valve of the present application Figure 2 ;

[0073] Figure 4Fig. 1 is a structural schematic view of a magnetic attraction assembly of an embodiment of the solenoid valve of the present application;

[0074] Figure 5 Fig. 2 is a sectional view of the magnetic attraction assembly of the embodiment of the solenoid valve of the present application;

[0075] Figure 6 Fig. 3 is a structural schematic view of a diaphragm assembly of an embodiment of the solenoid valve of the present application;

[0076] Figure 7 Fig. 4 is a sectional view of the diaphragm assembly of the embodiment of the solenoid valve of the present application;

[0077] Figure 8 Fig. 5 is a sectional view of a de-energized state of another embodiment of the solenoid valve of the present application;

[0078] Figure 9 Fig. 6 is a sectional view of an energized state of another embodiment of the solenoid valve of the present application;

[0079] Figure 10 Fig. 7 is a structural schematic view of a transmission member and a sealing ring of another embodiment of the solenoid valve of the present application;

[0080] Figure 11 Fig. 8 is a sectional view of a first magnetic isolation member of another embodiment of the solenoid valve of the present application;

[0081] Figure 12 Fig. 9 is a structural schematic view of a positioning member of another embodiment of the solenoid valve of the present application;

[0082] Figure 13 Fig. 10 is a sectional view of the positioning member of another embodiment of the solenoid valve of the present application;

[0083] Figure 14 Fig. 11 is a sectional view of a de-energized state of yet another embodiment of the solenoid valve of the present application;

[0084] Figure 15 Fig. 12 is a sectional view of an energized state of yet another embodiment of the solenoid valve of the present application;

[0085] Figure 16 Fig. 13 is a structural schematic view of a positioning member of yet another embodiment of the solenoid valve of the present application;

[0086] Figure 17 Fig. 14 is a sectional view of the positioning member of yet another embodiment of the solenoid valve of the present application.

[0087] Brief Description of the Drawings:

[0088]

[0089]

[0090] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0091] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort fall within the protection scope of the present application.

[0092] It should be noted that all directional indications, such as up, down, left, right, front, back, etc., are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0093] In the present application, unless otherwise explicitly specified and limited, the terms “connection”, “fixation” and the like should be understood in a broad sense, for example, “fixation” can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be internal connection of two elements or interaction relationship between two elements, unless otherwise explicitly limited. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0094] In addition, if the present application has descriptions involving “first”, “second” and the like, the descriptions of “first”, “second” and the like are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first”, “second” can explicitly or implicitly include at least one of the features. In addition, the meaning of “and / or” appearing throughout the text includes three parallel solutions. Taking “A and / or B” as an example, it includes A solution, or B solution, or A and B solutions. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope of the present application.

[0095] With the deepening development of intelligence and automation, the valve body assembly of electrically controlled switches is increasingly widely used in fluid conveying equipment. Solenoid valves control the opening and closing of the valve by energizing the coil to lift the iron core or de-energizing it. However, due to the structure of the iron core and the weight of the components themselves, general solenoid valves cannot be installed arbitrarily in any direction; they can only be installed with the coil head facing vertically, and horizontal installation is not supported. To support multi-directional installation, some existing solenoid valves add a pilot structure to save energy required for valve core switching, but this does not fundamentally solve the problem. If the coil axis is not aligned vertically during installation, the iron core, due to its weight, can easily become eccentric when the coil magnetically attracts it, causing wear between components and shortening the lifespan of the solenoid valve. Furthermore, the pilot structure is relatively complex, increasing the difficulty of component design and manufacturing. Simultaneously, due to the weight of the iron core, if the return spring has insufficient elasticity, horizontally installed solenoid valves are prone to sealing problems under low internal pressure.

[0096] This invention proposes an electromagnetic valve.

[0097] Reference Figures 1 to 3 , Figure 1 A cross-sectional view of an embodiment of the solenoid valve of the present invention. Figure 1 , Figure 2 for Figure 1 A magnified view of a portion of point A in the middle. Figure 3 A cross-sectional view of an embodiment of the solenoid valve of the present invention. Figure 2 .

[0098] In this embodiment of the invention, the solenoid valve includes:

[0099] Valve body assembly 100, which is provided with a communicating mounting cavity 130, a liquid inlet cavity 110 and a liquid outlet cavity 120;

[0100] The diaphragm assembly 200 is movably disposed within the mounting cavity 130 to isolate the inlet cavity 110 and the outlet cavity 120 or to connect the inlet cavity 110 and the outlet cavity 120.

[0101] The magnetic suction component 300 is slidably disposed in the mounting cavity 130 and on the side of the diaphragm assembly 200 away from the liquid outlet cavity 120. The magnetic suction component 300 has a first segment 301 and a second segment 302 connected together. The second segment 302 is disposed between the first segment 301 and the diaphragm assembly 200. The first segment 301 is made of magnetic material, and the density of the second segment 302 is less than the density of the first segment 301.

[0102] The first elastic member 400 is arranged in the mounting cavity 130 and is connected with the magnetic attraction assembly 300 and the valve body assembly 100. When the electromagnetic valve is powered off, the first elastic member 400 drives the magnetic attraction assembly 300 to abut against the diaphragm assembly 200, so that the diaphragm assembly 200 separates the liquid inlet cavity 110 and the liquid outlet cavity 120. When the electromagnetic valve is powered on, the magnetic attraction assembly 300 moves away from the liquid outlet cavity 120 and separates from the diaphragm assembly 200. The diaphragm assembly 200 moves towards the magnetic attraction assembly 300 under the action of the pressure in the liquid inlet cavity 110, so that the liquid inlet cavity 110 communicates with the liquid outlet cavity 120.

[0103] The electromagnetic valve in one technical scheme of the embodiment of the application comprises a valve body assembly 100, a diaphragm assembly 200, a magnetic attraction assembly 300 and a first elastic member 400. The diaphragm assembly 200 and the magnetic attraction assembly 300 can slide. The first elastic member 400 is connected with the magnetic attraction assembly 300 and the valve body assembly 100. When the electromagnetic valve is powered on, the coil of the valve body assembly 100 attracts the magnetic attraction assembly 300, so that the magnetic attraction assembly 300 moves away from the diaphragm assembly 200 and deforms the first elastic member 400. The magnetic attraction assembly 300 separates from the diaphragm assembly 200. The diaphragm assembly 200 moves towards the magnetic attraction assembly 300 under the action of the liquid pressure in the liquid inlet cavity 110, so that the liquid inlet cavity 110 communicates with the liquid outlet cavity 120. The liquid flows from the liquid inlet cavity 110 to the liquid outlet cavity 120. When the electromagnetic valve is powered off, the first elastic member 400 restores the deformation, drives the magnetic attraction assembly 300 to move and abut against the diaphragm assembly 200, so that the diaphragm assembly 200 resets and separates the liquid inlet cavity 110 and the liquid outlet cavity 120. The magnetic attraction assembly 300 has a first section 301 and a second section 302. The material of the first section 301 is a magnetic material, which can be iron, cobalt, nickel or the like, and is generally iron. When the electromagnetic valve is powered on, the first section 301 can be attracted by the magnetic force of the coil and move. The density of the second section 302 is smaller than that of the first section 301. The material of the second section 302 can be plastic, resin or carbon fiber. The density of the second section 302 is small, and the mass is much smaller than that of the magnetic material under the same volume. Therefore, the overall mass of the magnetic attraction assembly 300 is also much smaller. When the coil of the electromagnetic valve is installed in a non-vertical state, the magnetic attraction assembly 300 is less eccentric under the influence of its own gravity. The gravity is reduced, so that the normal pressure between the magnetic attraction assembly 300 and the valve body assembly 100 is also small. Furthermore, the friction between the magnetic attraction assembly 300 and the valve body assembly 100 is also reduced, so that the mutual abrasion between the magnetic attraction assembly 300 and the valve body assembly 100 is reduced, thereby prolonging the service life of the electromagnetic valve. On the other hand, the magnetic attraction assembly 300 has a small weight. When the first elastic member 400 drives the magnetic attraction assembly 300, the force is small. Therefore, the service life of the first elastic member 400 can be prolonged, and a smaller first elastic member 400 can be used, thereby reducing the cost.

[0104] In the embodiment, the first elastic member 400 can be a spring or made of elastic materials such as rubber and nylon. The material of the second section 302 is preferably plastic, which has superior wear resistance and is easy to process and low in cost.

[0105] Optionally, the magnetic assembly 300 comprises:

[0106] The first magnetic member 310 is slidably arranged in the mounting cavity 130, the first magnetic member 310 forms the first section 301, and the first elastic member 400 connects the first magnetic member 310 and the valve body assembly 100.

[0107] The guide column 320 has a first end connected to the first magnetic member 310 and a second end extending towards the diaphragm assembly 200, and the guide column 320 forms the second section 302.

[0108] Please refer to Figure 5 In the embodiment, the magnetic assembly 300 comprises the first magnetic member 310 and the guide column 320, the first magnetic member 310 is fixed at one end of the guide column 320 and can be fixed by clamping or bonding. The first magnetic member 310 is made of magnetic material to form the first section 301, the guide column 320 is made of plastic to form the second section 302, and the first elastic member 400 is arranged on the side of the first magnetic member 310 away from the guide column 320. In the embodiment, the components of the magnetic assembly 300 have simple structure and are easy to manufacture.

[0109] Further, the guide column 320 is provided with a weight-reducing hole.

[0110] In the embodiment, the guide column 320 is provided with a weight-reducing hole, which can further reduce the weight of the guide column 320, thereby further reducing the weight of the magnetic assembly 300, so that the degree of eccentricity of the magnetic assembly 300 caused by the weight when the electromagnetic valve is installed in a non-vertical direction is smaller. The specific shape and number of the weight-reducing hole can be adjusted and designed according to the needs, as long as the functional requirements are met, which is not limited herein.

[0111] Optionally, the guide column 320 comprises:

[0112] The hollow tube 321 has a hollow channel penetrating through itself in the axial direction, the hollow channel forms the weight-reducing hole, and the first magnetic member 310 is partially embedded in the first end of the hollow tube 321.

[0113] Please refer to Figure 5In the embodiment, the guide column 320 comprises a hollow tube 321, a hollow channel of the hollow tube 321 forms a lightening hole, which can greatly reduce the mass of the guide column 320, and further greatly reduce the mass of the magnetic attraction assembly 300. One end of the first magnetic attraction member 310 is embedded in the hollow channel of the hollow tube 321, so as to realize the fixation of the first magnetic attraction member 310 and the hollow tube 321, and the structure is simple. In the embodiment, the inner wall of the hollow channel is provided with a groove corresponding to one of the first magnetic attraction members 310, and the inner wall of the hollow channel is provided with a protrusion corresponding to the groove of the other first magnetic attraction member 310, the protrusion extends into the groove to fix the first magnetic attraction member 310 and the hollow tube 321.

[0114] Optionally, the guide column 320 further comprises:

[0115] The first guide ribs 322 are arranged on the outer periphery of the hollow tube 321 and extend along the axial direction of the hollow tube 321, a plurality of the first guide ribs 322 are arranged along the circumferential direction of the hollow tube 321 at equal intervals, and the intervals of the adjacent two first guide ribs 322 are equal.

[0116] Please refer to Figure 4 In the embodiment, the first guide ribs 322 are arranged on the outer peripheral wall of the hollow tube 321 and extend along the axial direction of the hollow tube 321, i.e., extend along the sliding direction of the hollow tube 321, and a plurality of the first guide ribs 322 are arranged at equal intervals along the circumferential direction of the hollow tube 321. The arrangement of the first guide ribs 322 can reduce the gap between the hollow tube 321 and the valve body assembly 100, thereby reducing the eccentricity degree of the magnetic attraction assembly 300. When the magnetic attraction assembly 300 slides, the first guide ribs 322 rub against the valve body assembly 100, and the wear is small, thereby prolonging the service life of the electromagnetic valve.

[0117] Further, the plurality of first guide ribs 322 form a first guide rib 322 group, and each first guide rib 322 group comprises two first guide ribs 322 arranged oppositely.

[0118] In the embodiment, three first guide rib 322 groups are formed on the outer periphery of the hollow tube 321, so that the hollow tube 321 can contact the valve body assembly 100 through the first guide ribs 322 when the hollow tube 321 is eccentric in any direction.

[0119] Optionally, the diaphragm assembly 200 divides the mounting cavity 130 into a first sub-cavity and a second sub-cavity, the hollow tube 321, the first magnetic attraction member 310 and the first elastic member 400 are arranged in the first sub-cavity, the second sub-cavity is communicated with the liquid inlet cavity 110 and the liquid outlet cavity 120, the diaphragm assembly 200 is further provided with a first pilot hole 210 and a second pilot hole 220, the first pilot hole 210 is communicated with the liquid inlet cavity 110 and the first sub-cavity, the second pilot hole 220 is communicated with the first sub-cavity and the liquid outlet cavity 120, when the electromagnetic valve is powered off, the hollow tube 321 abuts against the diaphragm assembly 200 and closes the second pilot hole 220, when the electromagnetic valve is powered on, the hollow tube 321 is separated from the diaphragm assembly 200 and opens the second pilot hole 220.

[0120] Please refer to Figures 1 to 3 and Figures 6 to 7 In the embodiment, the electromagnetic valve is also provided with a pilot structure, when the electromagnetic valve is powered off, the diaphragm assembly 200 separates the liquid inlet cavity 110 and the liquid outlet cavity 120, the liquid inlet cavity 110 is communicated with the first sub-cavity through the first pilot hole 210, the liquid in the liquid inlet cavity 110 enters the first sub-cavity through the first pilot hole 210, at this time, the forces on both sides of the diaphragm assembly 200 are balanced, when the electromagnetic valve is powered on, the second pilot hole 220 is opened, the liquid in the first sub-cavity enters the liquid outlet cavity 120 through the second pilot hole 220, so that the internal pressure of the first sub-cavity is reduced, the diaphragm assembly 200 loses the force applied by the magnetic attraction assembly 300, and the pressure of the liquid in the first sub-cavity is also reduced, so the force on the side of the diaphragm assembly 200 facing the first sub-cavity is reduced, the diaphragm assembly 200 slides towards the first sub-cavity, thereby making the liquid inlet cavity 110 and the liquid outlet cavity 120 communicated, and the liquid directly enters the liquid outlet cavity 120 from the liquid inlet cavity 110. Through the above-mentioned pilot structure, the pressure difference when the diaphragm assembly 200 opens the liquid inlet cavity 110 and the liquid outlet cavity 120 is small, in other words, the force that needs to be overcome when the diaphragm assembly 200 separates the liquid inlet cavity 110 and the liquid outlet cavity 120 is small, and the specifications of the first elastic member 400 and the second elastic member 340 are small.

[0121] Please refer to Figures 1 to 3 and Figure 7 In the embodiment, the electromagnetic valve is also provided with a sixth elastic member, the sixth elastic member is arranged on the side of the diaphragm assembly 200 facing the magnetic attraction assembly 300, the sixth elastic member connects the magnetic attraction assembly 300 and the inner wall of the first sub-cavity, when the electromagnetic valve is powered off, the first elastic member 400, the second elastic member 340 and the sixth elastic member jointly act to make the diaphragm assembly 200 separate the liquid inlet cavity 110 and the liquid outlet cavity 120, when the electromagnetic valve is powered on, the diaphragm assembly 200 slides to compress the sixth elastic member. The sixth elastic member has a pin, the pin is arranged in the first pilot hole 210 and the outer diameter of the pin is smaller than the inner diameter of the first pilot hole 210, when the diaphragm assembly 200 slides, the inner wall of the first pilot hole 210 slides along the pin, which can prevent dirt in the liquid from blocking the first pilot hole 210.

[0122] Optionally, the magnetic attraction assembly 300 further comprises:

[0123] a sealing member 330 arranged at the second end of the hollow tube 321, the hollow tube 321 closing the second pilot hole 220 through the sealing member 330.

[0124] Please refer to Figure 1 and Figure 5 In this embodiment, the magnetic attraction assembly 300 further comprises a sealing member 330, the sealing member 330 is made of elastic material, such as rubber, nylon, etc., the hollow tube 321 closes the second pilot hole 220 through the sealing member 330, when the electromagnetic valve is powered off, the second pilot hole 220 can be sealed more tightly, thereby reducing the possibility of liquid leakage.

[0125] Optionally, the sealing member 330 is in sliding connection with the inner wall of the hollow channel, and the magnetic attraction assembly 300 further comprises a second elastic member 340, the second elastic member 340 is arranged inside the hollow channel, the second elastic member 340 elastically connects the sealing member 330 and the first magnetic attraction member 310, and has a tendency to move the sealing member 330 away from the first magnetic attraction member 310.

[0126] Please refer to Figure 1 , Figure 4 and Figure 5 In this embodiment, the sealing member 330 is in sliding connection with the inner wall of the hollow channel, and the magnetic attraction assembly 300 further comprises a second elastic member 340, the second elastic member 340 connects the sealing member 330 and the first magnetic attraction member 310, when the magnetic attraction assembly 300 closes the second pilot hole 220 through the sealing member 330, the second elastic member 340 can apply force to the sealing member 330, so that the sealing member 330 is more tightly sealed with the second pilot hole 220, thereby further reducing the possibility of liquid leakage.

[0127] Optionally, the guide column 320 further comprises an end stop 323, the end stop 323 is arranged at the second end of the hollow tube 321, one end of the end stop 323 is fixed to the inner wall of the hollow channel, the other end of the end stop 323 extends towards the inside of the hollow channel, and the end stop 323 interferes with the sealing member 330 to block the sealing member 330 from coming out of the hollow channel.

[0128] Please refer to Figure 5 In this embodiment, the guide column 320 further comprises an end stop 323, the sliding stroke of the sealing member 330 is limited by the end stop 323, and the sealing member 330 is prevented from coming out of the hollow channel under the action of the second elastic member 340, which is simple in structure and easy to process, in this embodiment, the hollow tube 321, the first guide rib 322 and the end stop 323 are integrally formed. The specific shape of the end stop 323 can be adjusted and designed according to needs, as long as the functional requirements are met, which is not limited here.

[0129] Optionally, the electromagnetic valve further comprises:

[0130] The positioning member 500 is slidably arranged in the mounting cavity 130, and the positioning member 500 is provided with a sliding channel, and the magnetic attraction assembly 300 is slidably arranged in the sliding channel. When the electromagnetic valve is powered on, the diaphragm assembly 200 abuts against the positioning member 500.

[0131] The driving assembly 600 is drivingly connected to the positioning member 500 to drive the positioning member 500 to move towards or away from the diaphragm assembly 200.

[0132] Please refer to Figure 8 and Figure 9 In the embodiment, the electromagnetic valve further comprises a positioning member 500 and a driving assembly 600, and the magnetic attraction assembly 300 is slidably arranged in a sliding channel provided in the positioning member 500. The positioning member 500 is slidably arranged in the mounting cavity 130, and the driving assembly 600 can drive the positioning member 500 to move towards or away from the diaphragm assembly 200. When the electromagnetic valve is powered on, the diaphragm assembly 200 loses the blocking of the magnetic attraction assembly 300 and moves towards the magnetic attraction assembly 300 under the action of the pressure in the liquid inlet cavity 110, and a gap is formed between the diaphragm assembly 200 and the valve body assembly 100. This gap connects the liquid inlet cavity 110 and the liquid outlet cavity 120, and the electromagnetic valve is in an open state. That is, the gap forms a valve port of the electromagnetic valve, and liquid flows from the liquid inlet cavity 110 into the liquid outlet cavity 120 through the valve port. When the diaphragm assembly 200 moves towards the magnetic attraction assembly 300, the diaphragm assembly 200 abuts against the positioning member 500. Therefore, by driving the positioning member 500 to move, the size of the valve port formed between the diaphragm assembly 200 and the valve body assembly 100 can be changed, so that the flow rate of the electromagnetic valve in the powered state can be changed.

[0133] Optionally, the driving assembly 600 comprises:

[0134] The driving member 610 has a fixed end and an output end, the fixed end is connected to the valve body assembly 100, the output end can perform linear reciprocating motion, and the output end is drivingly connected to the first end of the positioning member 500.

[0135] Please refer to Figure 8 In the embodiment, the driving assembly 600 comprises a driving member 610, which can be an electric push rod or a linear motor. The output end of the driving member 610 can perform linear reciprocating motion. The driving member 610 directly drives the positioning member 500 to move, changes the position of the positioning member 500, adjusts the position of the diaphragm assembly 200 in the powered state of the electromagnetic valve, that is, adjusts the size of the valve port, thereby adjusting the flow rate of the electromagnetic valve. The structure is relatively simple and easy to implement.

[0136] Optionally, the driving assembly 600 further comprises:

[0137] The transmission member 620 is arranged in the mounting cavity 130, the driving member 610 drives and connects the first end of the transmission member 620, and the second end of the transmission member 620 extends towards the positioning member 500;

[0138] The third elastic member 630 is connected between the second end of the positioning member 500 and the diaphragm assembly 200, and has a tendency to move the positioning member 500 away from the diaphragm assembly 200.

[0139] Please refer to Figure 8 In the embodiment, the driving assembly 600 further comprises the transmission member 620 and the third elastic member 630. The output end of the driving member 610 drives the transmission member 620, so that the transmission member 620 can move linearly. When the driving member 610 drives the transmission member 620 to move towards the diaphragm assembly 200, the transmission member 620 and the positioning member 500 abut, the transmission member 620 pushes the positioning member 500 to move, and the positioning member 500 moves towards the diaphragm assembly 200, thereby reducing the size of the valve port. When the driving member 610 drives the transmission member 620 to move away from the diaphragm assembly 200, the positioning member 500 moves away from the diaphragm assembly 200 under the action of the third elastic member 630, thereby increasing the size of the valve port. At this time, the positioning member 500 still abuts the transmission member 620 under the action of the third elastic member 630. By changing the position of the transmission member 620, the position of the positioning member 500 is changed.

[0140] Optionally, the transmission member 620 comprises:

[0141] The connecting portion 621 is sleeved on the output end;

[0142] The supporting portion 622 is fixed at one end of the connecting portion 621 and extends towards the positioning member 500 at the other end.

[0143] Please refer to Figure 10 In the embodiment, the transmission member 620 comprises the connecting portion 621 and the supporting portion 622. The connecting portion 621 is sleeved on the output end and can be fixed between the connecting portion 621 and the output end by interference fit or key connection, so that the connecting portion 621 can move linearly with the output end. The supporting portion 622 is arranged at one end of the connecting portion 621 towards the positioning member 500. When the driving member 610 drives the connecting portion 621 to move, the connecting portion 621 drives the supporting portion 622 to move and abut the positioning member 500. In the embodiment, the connecting portion 621 and the supporting portion 622 are integrally formed, which is easy to manufacture.

[0144] Optionally, the valve body assembly 100 comprises:

[0145] The first valve body 140 is provided with the liquid inlet cavity 110 and the liquid outlet cavity 120;

[0146] The first magnetic isolation member 150 is provided with a first installation space, and the first magnetic isolation member 150 is combined with the first valve body 140 to form an installation cavity 130 with the first installation space. The fixed end is arranged outside the first installation space, the output end is arranged inside the first installation space, the transmission member 620 and the positioning member 500 are arranged inside the first installation space, and the first elastic member 400 connects the first magnetic isolation member 150 and the magnetic attraction assembly 300.

[0147] The first magnet group 160 is sleeved on the outer periphery of the first magnetic isolation member 150.

[0148] The first coil 170 is sleeved on the outer periphery of the first magnet group 160.

[0149] Please refer to Figure 8 In the embodiment, the valve body assembly 100 includes the first valve body 140, the first magnetic isolation member 150, the first magnet group 160, and the first coil 170. The first coil 170 generates a magnetic force when energized, thereby attracting the magnetic attraction assembly 300 to move. The first magnet group 160 includes two magnetic conductive sleeves arranged on the outer periphery of the first magnetic isolation member 150, and mainly plays a role in strengthening the magnetic field. The transmission member 620 and the positioning member 500 are arranged inside the electromagnetic valve, and the fixed end of the driving member 610 is arranged outside the electromagnetic valve. Therefore, the influence of the liquid flowing through the electromagnetic valve on the driving member 610 can be ignored, thereby reducing the design difficulty and manufacturing difficulty. The first installation space provided in the first magnetic isolation member 150 is combined with the valve body assembly 100 to form the installation cavity 130, and the installation cavity 130 can be in communication with the liquid inlet cavity 110 and the liquid outlet cavity 120. In the embodiment, the diaphragm assembly 200 includes a pilot and a sealing sheet. The sealing sheet is arranged between the first magnetic isolation member 150 and the first valve body 140, so that the first magnetic isolation member 150 and the first valve body 140 are sealed. The sealing sheet is also arranged between the pilot and the first valve body 140. The sealing sheet has elasticity, the pilot is arranged on the sealing sheet, and under the action of the liquid pressure when the electromagnetic valve is energized, the pilot can move to drive the sealing sheet to deform, thereby forming a valve port for connecting the liquid inlet cavity 110 and the liquid outlet cavity 120.

[0150] Optionally, the first magnetic isolation member 150 includes:

[0151] The first magnetic isolation tube 151 is provided with a first installation space;

[0152] The partition plate 152 is arranged inside the first installation space, the connecting portion 621 and the positioning member 500 are arranged on both sides of the partition plate 152, the supporting portion 622 is movably arranged through the partition plate 152, and the first elastic member 400 connects the partition plate 152 and the magnetic attraction assembly 300.

[0153] Please refer to Figure 11In the embodiment, the first magnetic isolation member 150 includes a first magnetic isolation pipe 151 and a partition plate 152. The first magnetic isolation pipe 151 is provided with a first installation space, and the partition plate 152 is arranged in the first installation space. The first magnetic isolation pipe 151 is fixed in position, and thus the partition plate 152 is fixed in position, thereby providing support for the first elastic member 400.

[0154] Optionally, the driving assembly 600 further includes a sealing ring 640, the sealing ring 640 is sleeved on the connecting portion 621, and the sealing ring 640 seals the connecting portion 621 and the first magnetic isolation pipe 151; and / or,

[0155] The first magnetic isolation member 150 is further provided with a limiting column 153, the limiting column 153 is arranged on a side of the partition plate 152 facing the magnetic attraction assembly 300, and the first elastic member 400 is sleeved on the limiting column 153.

[0156] Please refer to Figure 10 In the embodiment, the driving assembly 600 further includes a sealing ring 640. In the embodiment, a sealing groove is arranged on the outer circumferential wall of the connecting portion 621, and the sealing ring 640 is arranged in the sealing groove. When the transmission member 620 slides in the first installation space, the connecting portion 621 is sealed and connected with the inner wall of the first installation space through the sealing ring 640, and the possibility of liquid leakage is reduced.

[0157] Please refer to Figure 11 In the embodiment, the first magnetic isolation member 150 is further provided with a limiting column 153. On one hand, the limiting column 153 can limit the magnetic attraction assembly 300 and determine the stroke of the magnetic attraction assembly 300. On the other hand, the first elastic member 400 is sleeved on the limiting column 153, the limiting column 153 can prevent the magnetic attraction assembly 300 from excessively compressing the first elastic member 400, and the possibility of damage to the first elastic member 400 is reduced.

[0158] Optionally, the support portion 622 is provided in plurality, and the plurality of support portions 622 are arranged at intervals along the circumference of the connecting portion 621.

[0159] Please refer to Figures 10 to 11In the embodiment, the support portions 622 are provided in plurality and are arranged at intervals in the circumferential direction of the connecting portion 621. When the support portions 622 abut against the positioning member 500, force can be applied to the positioning member 500 more uniformly, so that eccentricity of the positioning member 500 during movement is prevented, thereby reducing wear between the positioning member 500 and the first magnetic-shielding member 150 and the magnetic-attraction assembly 300, and prolonging the service life of the positioning member 500, the first magnetic-shielding member 150 and the magnetic-attraction assembly 300. In the embodiment, the support portions 622 are in the form of cylinders, and the partition plate 152 is provided with through holes corresponding to the support portions 622, the support portions 622 are movably arranged in the through holes, the through holes are arranged at the edge region of the partition plate 152, and the limiting column 153 is arranged at the central region of the partition plate 152, so that the structure of the electromagnetic valve is more compact, and the overall size is smaller.

[0160] Optionally, the positioning member 500 comprises:

[0161] The first pipe body 510 is provided with a first sub-channel.

[0162] The second pipe body 520 is arranged at one end of the first pipe body 510 towards the diaphragm assembly 200, and is provided with a second sub-channel. The first sub-channel and the second sub-channel are communicated to form a sliding channel. The inner diameter of the second sub-channel is larger than that of the first sub-channel to form a stepped structure. The third elastic member 630 is arranged inside the second sub-channel and connects the stepped structure and the diaphragm assembly 200.

[0163] Please refer to Figures 12 to 13 In the embodiment, the positioning member 500 comprises the first pipe body 510 and the second pipe body 520, which are integrally formed. When the electromagnetic valve is powered on, the diaphragm assembly 200 moves to abut against the second pipe body 520. The inner diameter of the second sub-channel provided on the second pipe body 520 is larger than that of the first sub-channel provided on the first pipe body 510. The third elastic member 630 is arranged in the second sub-channel, which can limit the third elastic member 630. On the one hand, it can prevent the third elastic member 630 from deviating, so that uniform force can be applied to the positioning member 500. On the other hand, it can also make the third elastic member 630 deform along the axial direction as much as possible, so that the third elastic member 630 is prevented from being damaged due to bending or twisting during deformation.

[0164] Optionally, the positioning member 500 further comprises:

[0165] The second guide ribs 530 are arranged at the outer periphery of the first pipe body 510 and extend in the axial direction of the first pipe body 510. The second guide ribs 530 are arranged at intervals in the circumferential direction of the first pipe body 510, and the intervals of adjacent two second guide ribs 530 are equal.

[0166] Please refer to Figure 12In the embodiment, the positioning member 500 further comprises a second guide rib 530. The third guide rib 560 can reduce the gap between the first pipe body 510 and the first magnetic isolation member 150, thereby reducing the degree of eccentricity of the positioning member 500 caused by the non-vertical installation of the electromagnetic valve. When the positioning member 500 slides, the second guide rib 530 rubs against the first magnetic isolation member 150, and the wear is small, thereby prolonging the service life of the electromagnetic valve.

[0167] Optionally, the driving assembly 600 comprises:

[0168] The second magnetic attraction member 650 is arranged at one end of the positioning member 500 away from the diaphragm assembly 200, and the first elastic member 400 connects the second magnetic attraction member 650 and the magnetic attraction assembly 300.

[0169] The fourth elastic member 660 connects the second magnetic attraction member 650 and the valve body assembly 100, and has a tendency to move the second magnetic attraction member 650 towards the diaphragm assembly 200.

[0170] The fifth elastic member 670 is arranged at one end of the positioning member 500 close to the diaphragm assembly 200, and connects the positioning member 500 and the valve body assembly 100, and has a tendency to move the positioning member 500 towards the diaphragm assembly 200.

[0171] Please refer to Figures 14 to 15 In the embodiment, the driving assembly 600 comprises the second magnetic attraction member 650, the fourth elastic member 660, and the fifth elastic member 670. When the electromagnetic valve is powered on, the second magnetic attraction member 650 moves away from the diaphragm assembly 200 under the action of the second coil 1200, and the positioning member 500 connected with the second magnetic attraction member 650 also moves away from the diaphragm assembly 200. At this time, the fourth elastic member 660 and the fifth elastic member 670 are deformed under the force, until the elastic force of the fourth elastic member 660 and the fifth elastic member 670 balances with the magnetic force generated by the second coil 1200, the positioning member 500 stops moving, so that the diaphragm assembly 200 and the valve body assembly 100 can form a valve port. When the electromagnetic valve is powered off, the second magnetic attraction member 650 moves under the action of the fourth elastic member 660, and the positioning member 500 moves under the action of the fifth elastic member 670, so that the positioning member 500 moves towards the diaphragm assembly 200 and abuts against the diaphragm assembly 200. At this time, the diaphragm assembly 200 and the valve body assembly 100 also abut against each other, and the diaphragm assembly 200 separates the inlet cavity 110 and the outlet cavity 120. By controlling the current size of the second coil 1200, the magnetic force attracting the second magnetic attraction member 650 can be changed, and the position of the positioning member 500 in the force balance state can also be changed, thereby adjusting the size of the valve port formed between the diaphragm assembly 200 and the valve body assembly 100.

[0172] Optionally, the valve body assembly 100 comprises:

[0173] The second valve body 180 is provided with the liquid inlet cavity 110 and the liquid outlet cavity 120.

[0174] The second magnetic isolation member 190 is provided with a second installation space, and the second magnetic isolation member 190 is combined with the second valve body 180 so that the second installation space forms the installation cavity 130. The fourth elastic member 660, the second magnetic attraction member 650 and the positioning member 500 are arranged in the second installation space. The fourth elastic member 660 is connected between the second magnetic isolation member 190 and the second magnetic attraction member 650, and the fifth elastic member 670 is connected between the second magnetic isolation member 190 and the positioning member 500.

[0175] The second magnet group 1100 is sleeved on the outer periphery of the second magnetic isolation member 190.

[0176] The second coil 1200 is sleeved on the outer periphery of the second magnet group 1100.

[0177] Please refer to Figure 14 In the embodiment, the valve body assembly 100 includes the second valve body 180, the second magnetic isolation member 190, the second magnet group 1100 and the second coil 1200. The second magnet group 1100 includes two magnetic conductive sleeves arranged on the outer periphery of the second magnetic isolation member 190, which mainly serves to strengthen the magnetic field. The second coil 1200 generates a magnetic force when energized, which attracts the magnetic attraction assembly 300 and the second magnetic attraction member 650 to move, thereby opening the electromagnetic valve. By controlling the current of the second coil 1200, the magnetic force can be changed, and thus the position of the positioning member 500 connected to the second magnetic attraction member 650 can be changed, and the flow rate of the electromagnetic valve can be changed. By controlling the same coil, the opening and closing of the electromagnetic valve can be controlled, and the flow rate of the electromagnetic valve when opened can also be controlled. The structure is simple, and the energy consumption is low.

[0178] Optionally, the positioning member 500 includes:

[0179] The third pipe body 540 is provided with a sliding channel, and the second magnetic attraction member 650 is arranged at one end of the third pipe body 540 away from the diaphragm assembly 200.

[0180] The stop portion 550 is arranged at one end of the third pipe body 540 close to the diaphragm assembly 200 and on the outer periphery of the third pipe body 540. The fifth elastic member 670 is sleeved on the third pipe body 540 and connected between the stop portion 550 and the second magnetic isolation member 190.

[0181] Please refer to Figures 16 to 17 In the embodiment, the positioning member 500 includes the third pipe body 540 and the stop portion 550. The stop portion 550 is integrally formed with the third pipe body 540, and the stop portion 550 is arranged on the outer periphery of the third pipe body 540. The fifth elastic member 670 is sleeved on the outside of the third pipe body 540, which can make the fifth elastic member 670 deform along the axial direction of the fifth elastic member 670 as much as possible, thereby prolonging the service life of the fifth elastic member 670.

[0182] Optionally, the positioning member 500 further comprises third guide ribs 560, which are arranged on the outer periphery of the third tube body 540 and extend along the axial direction of the third tube body 540, and a plurality of the third guide ribs 560 are arranged along the circumferential direction of the third tube body 540 at equal intervals, and / or,

[0183] The positioning member 500 further comprises a limiting portion 570, the stop portion 550 is annularly arranged on the outer periphery of the third tube body 540, and the limiting portion 570 is arranged on the circumferential edge of the stop portion 550 and located on the side of the stop portion 550 away from the diaphragm assembly 200.

[0184] Please refer to Figures 16 to 17 In the embodiment, the third guide ribs 560 are arranged to reduce the gap between the third tube body 540 and the first magnetic isolation member 150, thereby reducing the degree of eccentricity of the positioning member 500 caused by the installation of the electromagnetic valve in a non-vertical state. When the positioning member 500 slides, the third guide ribs 560 rub against the first magnetic isolation member 150, and the amount of wear is small, thereby prolonging the service life of the electromagnetic valve.

[0185] Please refer to Figures 16 to 17 In the embodiment, the circumferential edge of the stop portion 550 is provided with the limiting portion 570, which can limit the position of the fifth elastic member 670 and prevent the position of the fifth elastic member 670 from deviating, thereby ensuring that the fifth elastic member 670 uniformly applies force to the positioning member 500.

[0186] In the embodiment, the positioning member 500 is in abutment with the diaphragm assembly 200 under the action of the fifth elastic member 670, and the positioning member 500 and the diaphragm assembly 200 are not completely sealed, so that liquid can enter the installation cavity 130 from the liquid inlet cavity 110 through the first pilot hole 210, and then enter the sliding channel from the gap between the positioning member 500 and the diaphragm assembly 200, thereby ensuring the normal operation of the pilot structure. Alternatively, a third pilot hole can be arranged on the positioning member 500, and liquid can enter the sliding channel from the liquid inlet cavity 110 through the first pilot hole 210 and then through the third pilot hole, thereby preventing the positioning member 500 from being in abutment with the diaphragm assembly 200 under the action of the fifth elastic member 670, which can affect the normal operation of the pilot structure.

[0187] Optionally, the electromagnetic valve further comprises a flow meter 700, which is provided with a flow detection channel, the flow meter 700 is connected to the valve body assembly 100 and the flow detection channel is in communication with the liquid outlet cavity 120, and the liquid in the liquid outlet cavity 120 exits the electromagnetic valve through the flow detection channel.

[0188] Please refer to Figures 15 to 16In the embodiment, the electromagnetic valve further comprises a flow meter 700, the flow meter 700 can monitor the flow of the liquid outlet cavity 120 of the electromagnetic valve, and the user can obtain more accurate flow information through the flow meter 700, thereby facilitating the control of the driving assembly 600 to adjust the flow size of the electromagnetic valve.

[0189] The application further provides a water outlet device, which comprises the electromagnetic valve, and the specific structure of the electromagnetic valve is referred to the above-mentioned embodiments. Since the water outlet device adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. The water outlet device has a conveying channel, and the opening and closing of the conveying channel are controlled by using the above-mentioned electromagnetic valve.

[0190] The above-mentioned is only the optional embodiment of the application, and does not limit the patent scope of the application, and any equivalent structural transformation, direct / indirect application in other related technical fields under the inventive concept of the application and the content of the specification and drawings are included in the patent protection scope of the application.

Claims

1. A solenoid valve, characterized in that, include: A valve body assembly, wherein the valve body assembly is provided with a communicating mounting cavity, a liquid inlet cavity, and a liquid outlet cavity; A diaphragm assembly is movably disposed within the mounting cavity to isolate the inlet cavity and the outlet cavity or to connect the inlet cavity and the outlet cavity. A magnetic suction assembly is slidably disposed within the mounting cavity and on the side of the diaphragm assembly opposite to the liquid outlet cavity. The magnetic suction assembly has a first segment and a second segment connected together. The second segment is disposed between the first segment and the diaphragm assembly. The first segment is made of a magnetic suction material, and the density of the second segment is less than that of the first segment. A first elastic element, disposed within the mounting cavity and connecting the magnetic attraction assembly and the valve body assembly, when the solenoid valve is de-energized, drives the magnetic attraction assembly to abut against the diaphragm assembly to isolate the inlet chamber and the outlet chamber; when the solenoid valve is energized, the magnetic attraction assembly moves away from the outlet chamber and separates from the diaphragm assembly, and the diaphragm assembly moves towards the magnetic attraction assembly under the action of internal pressure in the inlet chamber, thereby connecting the inlet chamber and the outlet chamber. The magnetic suction assembly includes a first magnetic suction element and a guide post. The first magnetic suction element is slidably disposed in the mounting cavity and forms the first segment. The first elastic element connects the first magnetic suction element and the valve body assembly. The first end of the guide post is connected to the first magnetic suction element, and the second end of the guide post extends toward the diaphragm assembly and forms the second segment. The solenoid valve further includes a positioning element and a driving assembly. The positioning element is slidably disposed in the mounting cavity and has a sliding channel. The magnetic suction assembly is slidably disposed inside the sliding channel. When the solenoid valve is energized, the diaphragm assembly abuts against the positioning element. The driving assembly drives the positioning element to move towards or away from the diaphragm assembly.

2. The solenoid valve as described in claim 1, characterized in that, The guide post is provided with weight reduction holes.

3. The solenoid valve as described in claim 2, characterized in that, The guide post includes: The hollow tube has a hollow channel that extends through itself along the axial direction, and the hollow channel forms the weight-reducing hole. The first magnetic suction part is partially embedded in the first end of the hollow tube.

4. The solenoid valve as described in claim 3, characterized in that, The guide post also includes: The first guide rib is disposed on the outer periphery of the hollow tube and extends along the axial direction of the hollow tube. Multiple first guide ribs are provided at intervals along the circumference of the hollow tube, and the interval between two adjacent first guide ribs is equal.

5. The solenoid valve as described in claim 4, characterized in that, Multiple first guide ribs form guide rib groups, and each guide rib group includes two first guide ribs arranged opposite to each other.

6. The solenoid valve as described in claim 3, characterized in that, The diaphragm assembly divides the mounting cavity into a first sub-cavity and a second sub-cavity. The hollow tube, the first magnetic suction element, and the first elastic element are disposed in the first sub-cavity. The second sub-cavity connects the liquid inlet cavity and the liquid outlet cavity. The diaphragm assembly also has a first pilot hole and a second pilot hole. The first pilot hole connects the liquid inlet cavity and the first sub-cavity, and the second pilot hole connects the first sub-cavity and the liquid outlet cavity. When the solenoid valve is de-energized, the hollow tube abuts against the diaphragm assembly and closes the second pilot hole. When the solenoid valve is energized, the hollow tube separates from the diaphragm assembly and opens the second pilot hole.

7. The solenoid valve as described in claim 6, characterized in that, The magnetic attraction component also includes: A sealing element is provided at the second end of the hollow tube, and the hollow tube closes the second pilot hole through the sealing element.

8. The solenoid valve as described in claim 7, characterized in that, The sealing element is slidably connected to the inner wall of the hollow channel. The magnetic attraction assembly also includes a second elastic element, which is disposed inside the hollow channel. The second elastic element elastically connects the sealing element and the first magnetic attraction element and has a tendency to move the sealing element away from the first magnetic attraction element.

9. The solenoid valve as described in claim 8, characterized in that, The guide post also includes an end stop, which is located at the second end of the hollow tube. One end of the end stop is fixed to the inner wall of the hollow channel, and the other end of the end stop extends toward the interior of the hollow channel. The end stop interferes with the seal to prevent the seal from coming out of the hollow channel.

10. The solenoid valve as claimed in claim 1, characterized in that, The driving component includes: The driving component has a fixed end and an output end. The fixed end is connected to the valve body assembly, and the output end is capable of linear reciprocating motion. The output end drives the first end of the positioning component.

11. The solenoid valve as described in claim 10, characterized in that, The driving component also includes: A transmission component is disposed within the mounting cavity; the driving component drives and connects to the first end of the transmission component; and the second end of the transmission component extends toward the positioning component. A third elastic element, connecting the second end of the positioning element and the diaphragm assembly, has a tendency to move the positioning element away from the diaphragm assembly.

12. The solenoid valve as described in claim 11, characterized in that, The transmission component includes: The connecting part is sleeved on the output end; The support portion has one end fixed to the connecting portion and the other end extending toward the positioning member.

13. The solenoid valve as described in claim 12, characterized in that, The valve body assembly includes: The first valve body is provided with the liquid inlet chamber and the liquid outlet chamber; The first magnetic shielding component has a first installation space. The first magnetic shielding component is assembled with the first valve body so that the first installation space forms the installation cavity. The fixed end is located outside the first installation space, and the output end extends into the first installation space. The transmission component and the positioning component are located inside the first installation space. The first elastic component connects the first magnetic shielding component and the magnetic attraction component. The first magnet assembly is sleeved on the outer periphery of the first magnetic shielding component; The first coil is sleeved on the outer periphery of the first magnet assembly.

14. The solenoid valve as described in claim 13, characterized in that, The first magnetic shielding component includes: A first magnetic shielding tube is provided with the first installation space; A partition is disposed inside the first installation space. The connecting part and the positioning member are disposed on both sides of the partition. The supporting part is movably inserted through the partition. The first elastic member connects the partition and the magnetic suction assembly.

15. The solenoid valve as described in claim 14, characterized in that, The drive assembly further includes a sealing ring, which is sleeved on the connecting portion and seals the connecting portion and the first magnetic shielding tube; and / or The first magnetic shielding component is also provided with a limiting post, which is located on the side of the partition facing the magnetic attraction assembly, and the first elastic component is sleeved on the limiting post.

16. The solenoid valve as described in claim 12, characterized in that, The support portion is provided in multiple ways, and the multiple support portions are arranged at intervals along the circumference of the connecting portion.

17. The solenoid valve as described in claim 11, characterized in that, The positioning element includes: The first tube body is equipped with the first sub-channel; The second tube is located at the end of the first tube facing the diaphragm assembly. The second tube has a second sub-channel. The first sub-channel and the second sub-channel are connected to form the sliding channel. The inner diameter of the second sub-channel is larger than the inner diameter of the first sub-channel to form a stepped structure. The third elastic element is located inside the second sub-channel and connects the stepped structure and the diaphragm assembly.

18. The solenoid valve as described in claim 17, characterized in that, The positioning element also includes: The second guide rib is provided on the outer periphery of the first tube and extends along the axial direction of the first tube. Multiple second guide ribs are provided at intervals along the circumference of the first tube, and the interval between two adjacent second guide ribs is equal.

19. The solenoid valve as claimed in claim 1, characterized in that, The driving component includes: The second magnetic attractor is located at the end of the positioning member away from the diaphragm assembly, and the first elastic member connects the second magnetic attractor and the magnetic attractor assembly. The fourth elastic element connects the second magnetic element and the valve body assembly, and has a tendency to move the second magnetic element toward the diaphragm assembly; The fifth elastic element is disposed at one end of the positioning element near the diaphragm assembly, connects the positioning element and the valve body assembly, and has a tendency to move the positioning element toward the diaphragm assembly.

20. The solenoid valve as described in claim 19, characterized in that, The valve body assembly includes: The second valve body is provided with the liquid inlet chamber and the liquid outlet chamber; The second magnetic shielding component has a second installation space. The second magnetic shielding component is assembled with the second valve body so that the second installation space forms the installation cavity. The fourth elastic component, the second magnetic suction component, and the positioning component are disposed inside the second installation space. The fourth elastic component connects the second magnetic shielding component and the second magnetic suction component. The fifth elastic component connects the second magnetic shielding component and the positioning component. The second magnet assembly is sleeved on the outer periphery of the second magnetic shielding component; The second coil is fitted around the outer periphery of the second magnet assembly.

21. The solenoid valve as described in claim 20, characterized in that, The positioning element includes: The third tube is provided with the sliding channel, and the second magnetic attractor is located at the end of the third tube away from the diaphragm assembly; A stop portion is provided at one end of the third tube body near the diaphragm assembly and on the outer periphery of the third tube body. The fifth elastic member is sleeved on the third tube body and connects the stop portion and the second magnetic shielding member.

22. The solenoid valve as described in claim 21, characterized in that, The positioning element further includes a third guide rib, which is disposed on the outer periphery of the third tube and extends axially along the third tube. Multiple third guide ribs are spaced apart circumferentially along the third tube, with equal spacing between adjacent third guide ribs; and / or, The positioning component further includes a limiting part, the stopping part is arranged around the outer periphery of the third tube body, the limiting part is arranged on the periphery of the stopping part and is located on the side of the stopping part away from the diaphragm assembly.

23. The solenoid valve as described in claim 1, characterized in that, The solenoid valve also includes a flow meter, which has a flow detection channel. The flow meter is connected to the valve body assembly and the flow detection channel is in communication with the liquid outlet chamber. The liquid in the liquid outlet chamber leaves the solenoid valve through the flow detection channel.

24. A water outlet device, characterized in that, Including the solenoid valve as described in any one of claims 1-23.

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