Electromagnetic valve and water purifying device comprising same

Abstract

The utility model provides an electromagnetic valve and a water purification device including the same, the electromagnetic valve comprises a body, a moving part, a driving part and a plugging part, the body comprises a water inlet and a water outlet, the water inlet and the water outlet are communicated through a communication channel, and the moving part, the driving part and the plugging part are arranged in the body. A first magnetic surface and a second magnetic surface are arranged on the surface, facing the driving part, of the moving part and the surface, facing the moving part, of the driving part respectively, the end, away from the driving part, of the moving part is connected with the blocking part, and the first magnetic surface and the second magnetic surface are magnetically matched so that the blocking part can move in the process of opening or closing the communicating channel; wherein the extension length of the water outlet is 10 mm to 15 mm. Through magnetic cooperation of the first magnetic surface and the second magnetic surface, the moving part can move relative to the driving part, and then the moving part can drive the blocking part to move in the communicating channel, so that communication or closing of the water inlet and the water outlet is achieved.

Description

Technical Field

[0001] The utility model relates to a solenoid valve and a water purification device comprising the solenoid valve. Background Art

[0002] With the improvement of living standards, health has become the most concerned issue for people. Environmental pollution is getting worse, especially water problems. Water purifiers have provided healthy water to many families, reducing the harm of water pollution to health. For most families, water purifiers have become a necessity.

[0003] The solenoid valves used in current water purifiers often cause hot water to drip or flow out in streams after taking water, or they can no longer hold the water after a while and drip again, which often results in accidents of scalding users. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defect that water leaks or drips from the water outlet of the water purifier in the prior art and causes scalding to the user, and to provide a solenoid valve and a water purifier including the same.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] The utility model discloses a solenoid valve for a water purification device, the solenoid valve comprising a body, a moving part, a driving part and a blocking part, the body comprising a water inlet and a water outlet, the water inlet and the water outlet being connected through a connecting passage, the moving part, the driving part and the blocking part being arranged in the body, a first magnetic surface and a second magnetic surface being arranged on the surface of the moving part facing the driving part and on the surface of the driving part facing the moving part, respectively, an end of the moving part away from the driving part is connected to the blocking part, the first magnetic surface and the second magnetic surface are magnetically matched so that the blocking part moves in opening or closing the connecting passage;

[0007] The extension length of the water outlet is 10mm-15mm.

[0008] In this solution, the above-mentioned structural form is adopted, and through the magnetic cooperation of the first magnetic surface and the second magnetic surface, the moving part can move relative to the driving part, and then the blocking part can be driven by the moving part to move in the connecting channel to achieve the connection or closure of the water inlet and the water outlet. Further, when the user needs to receive water from the water outlet, the blocking part opens the connecting channel, so that the water outlet and the water inlet are connected, and the water reaches the water outlet after passing through the water inlet and the connecting channel in sequence; when the user does not need to receive water, the blocking part closes the connecting channel, so that the water inlet and the water outlet are closed, so that water cannot flow out of the water outlet, and then dripping or flowing out in streams can be prevented, reducing the risk of scalding the user and improving the safety of the user.

[0009] Preferably, a first accommodating cavity is provided on the driving member, and the outer wall surface of the moving member is slidably matched with the inner wall surface of the first accommodating cavity; wherein the extension direction of the first accommodating cavity is the same as the movement direction of the blocking member;

[0010] Alternatively, a second accommodating cavity is provided on the moving member, and the outer wall surface of the driving member is slidably matched with the inner wall surface of the second accommodating cavity; wherein the extension direction of the second accommodating cavity is the same as the movement direction of the blocking member.

[0011] In the present solution, the above-mentioned structural form is adopted, and the first accommodating chamber or the second accommodating chamber can provide guidance for the movement of the moving part, so that the moving part can move in a preset direction, and then drive the blocking part to move in the preset direction, thereby improving the stability and reliability of the movement of the blocking part, and improving the stability and reliability of the movement of the blocking part in the connecting channel, which can be beneficial to the stability and reliability of closing the connecting channel when the user is not receiving water, and further reducing the possibility of scalding the user.

[0012] Preferably, the first magnetic surface and the second magnetic surface have opposite magnetism, and when the blocking member closes the connecting passage, there is a gap between the first magnetic surface and the second magnetic surface in the moving direction of the blocking member;

[0013] The second magnetic surface is arranged at the bottom of the first accommodating cavity, and the first magnetic surface is arranged at one end of the moving part accommodated in the first accommodating cavity;

[0014] Alternatively, the first magnetic surface is arranged at the bottom of the second accommodating cavity, and the second magnetic surface is arranged at one end of the driving member accommodated in the second accommodating cavity.

[0015] In this solution, the above-mentioned structural form is adopted, and the movement of the moving part is realized through the magnetic cooperation of the first magnetic surface and the second magnetic surface, thereby realizing the movement of the blocking part, so that the blocking part can close or open the connecting channel.

[0016] Preferably, the solenoid valve further comprises an elastic member, wherein the elastic member is disposed in the gap, and opposite ends of the elastic member are respectively connected to the first magnetic surface and the second magnetic surface.

[0017] In this solution, the above-mentioned structural form is adopted, and the efficiency of the moving part returning to the initial position is improved by the elastic part.

[0018] Preferably, the solenoid valve further comprises a water baffle plate, and the water baffle plate is used to change the water flow direction of the water inlet so that the water flow direction is at least opposite to the movement direction of the blocking member.

[0019] In this solution, the above-mentioned structural form is adopted, and the water baffle can change the flow direction of the incoming water, thereby providing upward buoyancy for the sealing part, allowing the sealing part to be opened quickly. When the solenoid valve is closed, the internal stored water can also provide downward pressure for the sealing part, making the sealing part seal more securely and preventing dripping due to poor sealing.

[0020] Preferably, the moving part includes a first moving part and a second moving part, a weight-reducing cavity is provided on the first moving part, and one end of the second moving part extends into the weight-reducing cavity and is connected to an inner wall of the weight-reducing cavity.

[0021] In the present solution, the above-mentioned structural form is adopted, and the weight of the moving parts as a whole is reduced by opening a weight-reducing cavity, thereby facilitating reducing the weight of the solenoid valve as a whole.

[0022] Preferably, one of the inner wall surface of the weight-reducing cavity and the outer wall surface of the second moving part extending into the weight-reducing cavity is provided with a first protrusion, and the other is provided with a first groove which is interference-fitted with the first protrusion;

[0023] There are multiple first protrusions or first grooves on the weight-reducing cavity, and the multiple first protrusions or first grooves are arranged along the circumference of the weight-reducing cavity. The first protrusions and the first grooves are matched one by one.

[0024] In the present solution, the above-mentioned structural form is adopted, and the stability and reliability of the connection between the weight-reducing cavity and the second moving part are improved through the interference fit between the first protrusion and the first groove.

[0025] Preferably, one of the moving part and the blocking part is provided with a second protrusion, and the other is provided with a second groove matched with the second protrusion.

[0026] In this solution, the above-mentioned structural form is adopted, and the connection between the moving part and the blocking part is achieved through the cooperation of the second protrusion and the second groove.

[0027] Preferably, the solenoid valve further comprises a filter element, and the filter element is arranged at the water inlet and is used for filtering the water source at the water inlet.

[0028] In this solution, the above-mentioned structural form is adopted, and some foreign matter can be intercepted by the filter element to prevent the moving part from being stuck and unable to move, which is beneficial to the stability and reliability of the movement of the moving part, and further beneficial to the stability and reliability of the movement of the blocking part.

[0029] The utility model further discloses a water purification device, which comprises the solenoid valve as described in any one of the above items.

[0030] In this solution, the above-mentioned structural form is adopted, and the magnetic cooperation between the first magnetic surface and the second magnetic surface enables the moving part to move relative to the driving part, and then the moving part can drive the blocking part to move in the connecting channel to achieve the connection or closing of the water inlet and the water outlet. Further, when the user needs to receive water from the water outlet, the blocking part opens the connecting channel, so that the water outlet and the water inlet are connected, and the water reaches the water outlet after passing through the water inlet and the connecting channel in sequence; when the user does not need to receive water, the blocking part closes the connecting channel, so that the water inlet and the water outlet are closed, so that the water cannot flow out from the water outlet, and then the phenomenon of dripping or flowing out in strands can be prevented, reducing the risk of scalding the user and improving the safety of the user. In addition, the guide member can provide guidance for the movement of the moving part, so that the moving part can move in a preset direction, improving the stability and reliability of the movement of the moving part, thereby improving the stability and reliability of the movement of the blocking part, and making the stability and reliability of the movement of the blocking part in the connecting channel, which can be conducive to the stability and reliability of closing the connecting channel when the user does not receive water, further reducing the possibility of scalding the user.

[0031] The positive and progressive effects of the utility model are:

[0032] Through the magnetic cooperation of the first magnetic surface and the second magnetic surface, the moving part can move relative to the driving part, and then the blocking part can be driven by the moving part to move in the connecting channel to achieve the connection or closure of the water inlet and the water outlet. Further, when the user needs to receive water from the water outlet, the blocking part opens the connecting channel, so that the water outlet and the water inlet are connected, and the water reaches the water outlet after passing through the water inlet and the connecting channel in sequence; when the user does not need to receive water, the blocking part closes the connecting channel, so that the water inlet and the water outlet are closed, so that the water cannot flow out from the water outlet, and then the phenomenon of dripping or flowing out in strands can be prevented, reducing the risk of scalding the user and improving the safety of the user. In addition, the guide member can provide guidance for the movement of the moving part, so that the moving part can move in a preset direction, improving the stability and reliability of the movement of the moving part, thereby improving the stability and reliability of the movement of the blocking part, and making the stability and reliability of the movement of the blocking part in the connecting channel, which can be conducive to the stability and reliability of closing the connecting channel when the user does not receive water, further reducing the possibility of scalding the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a cross-sectional schematic diagram of a solenoid valve according to an embodiment of the utility model.

[0034] Figure 2 It is a schematic structural diagram of the solenoid valve according to an embodiment of the utility model.

[0035] Figure 3 It is a partial cross-sectional schematic diagram of a solenoid valve according to an embodiment of the utility model.

[0036] Figure 4 It is a partial cross-sectional structural schematic diagram of the solenoid valve according to an embodiment of the utility model.

[0037] Description of reference numerals:

[0038] Solenoid valve 1

[0039] Body 11

[0040] Water Inlet 111

[0041] Water outlet 112

[0042] Communication channel 113

[0043] Moving parts 12

[0044] The first magnetic surface 121

[0045] The first moving part 122

[0046] The second moving part 123

[0047] Weight reduction chamber 124

[0048] Driving member 13

[0049] The second magnetic surface 131

[0050] The first accommodating chamber 132

[0051] Blocking piece 14

[0052] Gap 15

[0053] Elastic member 16

[0054] Water retaining plate 17

[0055] First protrusion 20

[0056] First groove 21

[0057] The second protrusion 22

[0058] Second groove 23

[0059] Filter 24

[0060] Filter hole 241 DETAILED DESCRIPTION

[0061] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0062] like Figures 1 to 4As shown, this embodiment provides a solenoid valve 1 for a water purification device, the solenoid valve 1 includes a body 11, a moving part 12, a driving part 13 and a blocking part 14, the body 11 includes a water inlet 111 and a water outlet 112, the water inlet 111 and the water outlet 112 are connected through a connecting channel 113, the moving part 12, the driving part 13 and the blocking part 14 are arranged in the body 11, and a first magnetic surface 121 and a second magnetic surface 131 are respectively provided on the surface of the moving part 12 facing the driving part 13 and the surface of the driving part 13 facing the moving part 12, the end of the moving part 12 away from the driving part 13 is connected to the blocking part 14, and the magnetic cooperation of the first magnetic surface 121 and the second magnetic surface 131 enables the blocking part 14 to move in opening or closing the connecting channel 113; wherein the extension length of the water outlet 112 is 10mm-15mm. Specifically, through the magnetic cooperation between the first magnetic surface 121 and the second magnetic surface 131, the moving part 12 can move relative to the driving part 13, and then the blocking part 14 can be driven by the moving part 12 to move in the connecting channel 113, so as to achieve the connection or closure of the water inlet 111 and the water outlet 112. Further, when the user needs to receive water from the water outlet 112, the blocking part 14 opens the connecting channel 113, so that the water outlet 112 and the water inlet 111 are connected, and the water reaches the water outlet 112 after passing through the water inlet 111 and the connecting channel 113 in sequence; when the user does not need to receive water, the blocking part 14 closes the connecting channel 113, so that the water inlet 111 and the water outlet 112 are closed, so that the water cannot flow out from the water outlet 112, thereby preventing the phenomenon of dripping or flowing out in streams, reducing the risk of scalding the user and improving the safety of the user.

[0063] When it is necessary to explain in detail, the magnetic cooperation of the first magnetic surface 121 and the second magnetic surface 131 means that the magnetic forces of the first magnetic surface 121 and the second magnetic surface 131 can be opposite, so that the first magnetic surface 121 and the second magnetic surface 131 generate attraction when power is turned on, so that the first magnetic surface 121 and the second magnetic surface 131 move in the direction of approaching each other; the magnetic forces of the first magnetic surface 121 and the second magnetic surface 131 can also be the same, so that the first magnetic surface 121 and the second magnetic surface 131 generate repulsion when power is turned on, so that the first magnetic surface 121 and the second magnetic surface 131 move in the direction away from each other. In short, the magnetic cooperation of the first magnetic surface 121 and the second magnetic surface 131 refers to the movement relationship between the first magnetic surface 121 and the second magnetic surface 131 generated by utilizing the magnetic relationship between the first magnetic surface 121 and the second magnetic surface 131.

[0064] In this embodiment, the driving member 13 is a wire package, and the moving member 12 is an armature. The wire package has magnetism when powered, and the magnetism is opposite to that of the armature. In other embodiments, the types of the driving member 13 and the moving member 12 can be adjusted according to actual needs, and the types of the driving member 13 and the moving member 12 are not specifically limited here. In addition, the material of the blocking member 14 is rubber.

[0065] In addition, this embodiment shortens the extension length of the water outlet 112, and the blocking member 14 is disposed near the water outlet 112, so that the connecting channel 113 can be better blocked by the blocking member 14, thereby achieving a better sealing effect and greatly reducing the possibility of scalding.

[0066] like Figure 1 As shown, the driving member 13 is provided with a first accommodating cavity 132, and the outer wall surface of the moving member 12 is slidably matched with the inner wall surface of the first accommodating cavity 132; wherein the extension direction of the first accommodating cavity 132 is the same as the movement direction of the blocking member 14; or, the moving member 12 is provided with a second accommodating cavity, and the outer wall surface of the driving member 13 is slidably matched with the inner wall surface of the second accommodating cavity; wherein the extension direction of the second accommodating cavity is the same as the movement direction of the blocking member 14. With the above-mentioned structural form, the first accommodating cavity 132 or the second accommodating cavity can provide guidance for the movement of the moving member 12, so that the moving member 12 can move in a preset direction, and then can drive the blocking member 14 to move in a preset direction, thereby improving the stability and reliability of the movement of the blocking member 14, and improving the stability and reliability of the movement of the blocking member 14 in the connecting channel 113, thereby facilitating the stability and reliability of closing the connecting channel 113 when the user does not receive water, and further reducing the possibility of the user being scalded.

[0067] In this embodiment, a first accommodating cavity 132 is defined in the driving member 13 , and an outer wall surface of the moving member 12 is slidably matched with the first accommodating cavity 132 .

[0068] The magnetism of the first magnetic surface 121 and the second magnetic surface 131 are opposite. When the blocking member 14 closes the connecting channel 113, there is a gap 15 between the first magnetic surface 121 and the second magnetic surface 131 in the movement direction of the blocking member 14; specifically, when the first magnetic surface 121 and the second magnetic surface 131 are not energized, there is a gap 15 between the first magnetic surface 121 and the second magnetic surface 131; after power is supplied, the magnetism generated by each other is opposite, so that the first magnetic surface 121 and the second magnetic surface 131 move towards each other, so that the gap 15 is reduced, so that the moving member 12 can drive the blocking member 14 to move.

[0069] The second magnetic surface 131 is arranged at the bottom of the first accommodating cavity 132, and the first magnetic surface 121 is arranged at one end of the moving member 12 accommodated in the first accommodating cavity 132; or, the first magnetic surface 121 is arranged at the bottom of the second accommodating cavity, and the second magnetic surface 131 is arranged at one end of the driving member 13 accommodated in the second accommodating cavity. The above structural form improves the compactness of the overall structure of the solenoid valve 1.

[0070] In this embodiment, a first accommodating cavity 132 is opened on the coil, one end of the armature extends into the first accommodating cavity 132 from the opening of the first accommodating cavity 132, and a gap 15 is provided between the bottom of the first accommodating cavity 132 and the end face of the armature extending into the first accommodating cavity 132.

[0071] like Figure 1 As shown, the solenoid valve 1 further includes an elastic member 16, which is disposed in the gap 15, and opposite ends of the elastic member 16 are respectively connected to the first magnetic surface 121 and the second magnetic surface 131. With the above structure, the elastic member 16 improves the efficiency of the moving member 12 returning to the initial position.

[0072] In this embodiment, the elastic member 16 is a spring. In other embodiments, the type of the elastic member 16 can be adjusted according to actual needs and is not limited here.

[0073] The solenoid valve 1 further includes a water baffle 17, which is used to change the direction of water flow at the water inlet 111 so that the water flow direction is at least opposite to the movement direction of the blocking member 14. With the above-mentioned structural form, the water baffle 17 can change the flow direction of the incoming water, thereby providing an upward buoyancy for the blocking member 14, allowing the blocking member 14 to open quickly. When the solenoid valve 1 is closed, the internal water can also provide downward pressure for the blocking member 14, making the sealing member 14 more secure and preventing water dripping due to loose sealing.

[0074] In this embodiment, one end of the water baffle 17 is connected to the upper end of the water inlet 111 and extends downward from the upper end of the water inlet 111; wherein the extension direction of the water inlet 111 is horizontal. A first gap 15 is provided between the lower end of the water baffle 17 and the lower end of the water inlet 111. With the above-mentioned structural form, water flows into the body 11 from the water inlet 111, and the direction of the water flow is horizontal at this time. Under the action of the water baffle 17, the direction of the water flow is changed to a vertical direction, and flows out from the first gap 15. At this time, the direction of the water flow is opposite to the direction of movement of the blocking member 14. Under the action and influence of the water flow, the blocking member 14 is better sealed. In the process of the blocking member 14 opening the connecting channel 113, the water flow will give the blocking member 14 the same buoyancy as the direction of movement of the blocking member 14, so that the blocking member 14 can open the connecting channel 113 faster, thereby improving the efficiency of opening the connecting channel 113.

[0075] like Figure 1and Figure 4 As shown, the moving part 12 includes a first moving part 122 and a second moving part 123. A weight-reducing cavity 124 is provided on the first moving part 122. One end of the second moving part 123 extends into the weight-reducing cavity 124 and is connected to the inner wall of the weight-reducing cavity 124. With the above-mentioned structural form, the weight of the moving part 12 as a whole is reduced by providing the weight-reducing cavity 124, thereby facilitating the reduction of the weight of the solenoid valve 1 as a whole.

[0076] In this embodiment, the second moving portion 123 is made of plastic, thereby further reducing the overall weight of the moving canon.

[0077] like Figure 4 As shown, the inner wall surface of the weight-reducing cavity 124 and the outer wall surface of the second moving part 123 extending into the weight-reducing cavity 124, one of which is provided with a first protrusion 20, and the other is provided with a first groove 21 that is interference-fitted with the first protrusion 20; the number of the first protrusions 20 or first grooves 21 provided on the weight-reducing cavity 124 is multiple, and the multiple first protrusions 20 or first grooves 21 are arranged along the circumference of the weight-reducing cavity 124, and the first protrusions 20 and the first grooves 21 are matched one by one. With the above-mentioned structural form, the stability and reliability of the connection between the weight-reducing cavity 124 and the second moving part 123 are improved through the interference fit of the first protrusion 20 and the first groove 21.

[0078] In this embodiment, a first protrusion 20 is provided on the inner wall of the weight reduction cavity 124, and a first groove 21 is provided on the inner wall of the second moving portion 123. In other embodiments, the positions of the first protrusion 20 and the first groove 21 can be adjusted according to actual needs, and the positions of the first protrusion 20 and the first groove 21 are not further limited here.

[0079] One of the moving part 12 and the blocking part 14 has a second protrusion 22, and the other has a second groove 23 that matches the second protrusion 22. With the above structure, the moving part 12 and the blocking part 14 are connected by the cooperation of the second protrusion 22 and the second groove 23.

[0080] like Figure 1 As shown, the solenoid valve 1 further includes a filter 24, which is disposed at the water inlet 111 and is used to filter the water source of the water inlet 111. Specifically, the filter 24 is sleeved at the water inlet 111, and a filter hole 241 is provided on the filter 24 for filtering impurities. With the above-mentioned structural form, some foreign matter can be intercepted by the filter 24 to prevent the moving part 12 from being stuck and unable to move, thereby facilitating the stability and reliability of the movement of the moving part 12, and further facilitating the stability and reliability of the movement of the blocking part 14.

[0081] The present embodiment provides a water purification device, which includes a solenoid valve 1. With the above-mentioned structural form, the moving part 12 can move relative to the driving part 13 through the magnetic cooperation of the first magnetic surface 121 and the second magnetic surface 131, and then the blocking part 14 can be driven by the moving part 12 to move in the connecting channel 113 to achieve the connection or closure of the water inlet 111 and the water outlet 112. Further, when the user needs to receive water from the water outlet 112, the blocking part 14 opens the connecting channel 113, so that the water outlet 112 and the water inlet 111 are connected, and the water reaches the water outlet 112 after passing through the water inlet 111 and the connecting channel 113 in sequence; when the user does not need to receive water, the blocking part 14 closes the connecting channel 113, so that the water inlet 111 and the water outlet 112 are closed, so that the water cannot flow out from the water outlet 112, and then the phenomenon of dripping or flowing out in strands can be prevented, reducing the risk of scalding the user and improving the safety of the user. In addition, the guide member can provide guidance for the movement of the moving member 12, so that the moving member 12 can move in a preset direction, thereby improving the stability and reliability of the movement of the moving member 12, thereby improving the stability and reliability of the movement of the blocking member 14, and improving the stability and reliability of the movement of the blocking member 14 in the connecting channel 113, which can be beneficial to the stability and reliability of closing the connecting channel 113 when the user is not receiving water, further reducing the possibility of scalding the user.

[0082] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A solenoid valve for a water purification device, characterized in that: The solenoid valve comprises a body, a moving part, a driving part and a blocking part, the body comprises a water inlet and a water outlet, the water inlet and the water outlet are connected through a connecting passage, the moving part, the driving part and the blocking part are arranged in the body, a first magnetic surface and a second magnetic surface are respectively arranged on the surface of the moving part facing the driving part and the surface of the driving part facing the moving part, one end of the moving part away from the driving part is connected to the blocking part, and the first magnetic surface and the second magnetic surface are magnetically matched so that the blocking part moves in opening or closing the connecting passage; The extension length of the water outlet is 10mm-15mm.

2. The solenoid valve according to claim 1, characterized in that The driving member is provided with a first accommodating cavity, and the outer wall surface of the moving member is slidably matched with the inner wall surface of the first accommodating cavity; wherein the extending direction of the first accommodating cavity is the same as the moving direction of the blocking member; Alternatively, a second accommodating cavity is provided on the moving member, and the outer wall surface of the driving member is slidably matched with the inner wall surface of the second accommodating cavity; wherein the extension direction of the second accommodating cavity is the same as the movement direction of the blocking member.

3. The solenoid valve according to claim 2, characterized in that: The first magnetic surface and the second magnetic surface have opposite magnetic properties, and when the blocking member closes the connecting passage, there is a gap between the first magnetic surface and the second magnetic surface in the moving direction of the blocking member; The second magnetic surface is arranged at the bottom of the first accommodating cavity, and the first magnetic surface is arranged at one end of the moving part accommodated in the first accommodating cavity; Alternatively, the first magnetic surface is arranged at the bottom of the second accommodating cavity, and the second magnetic surface is arranged at one end of the driving member accommodated in the second accommodating cavity.

4. The solenoid valve according to claim 3, characterized in that: The solenoid valve further includes an elastic member, which is disposed in the gap, and opposite ends of the elastic member are respectively connected to the first magnetic surface and the second magnetic surface.

5. The solenoid valve according to claim 1, characterized in that: The solenoid valve further comprises a water baffle plate, and the water baffle plate is used to change the water flow direction of the water inlet so that the water flow direction is at least opposite to the movement direction of the blocking member.

6. The solenoid valve according to claim 1, characterized in that: The moving part comprises a first moving part and a second moving part. The first moving part is provided with a weight-reducing cavity. One end of the second moving part extends into the weight-reducing cavity and is connected with an inner wall of the weight-reducing cavity.

7. The solenoid valve according to claim 6, characterized in that The inner wall surface of the weight-reducing cavity and the outer wall surface of the second moving part extending into the weight-reducing cavity, one of which is provided with a first protrusion, and the other is provided with a first groove which is interference-fitted with the first protrusion; There are multiple first protrusions or first grooves on the weight-reducing cavity, and the multiple first protrusions or first grooves are arranged along the circumference of the weight-reducing cavity. The first protrusions and the first grooves are matched one by one.

8. The solenoid valve according to claim 1, characterized in that One of the moving part and the blocking part is provided with a second protrusion, and the other is provided with a second groove matched with the second protrusion.

9. The solenoid valve according to claim 1, characterized in that: The solenoid valve further comprises a filter element, which is arranged at the water inlet and is used for filtering the water source at the water inlet.

10. A water purification device, characterized in that: The water purification device comprises a solenoid valve as described in any one of claims 1-9.

Images