Wastewater electromagnetic valve and water purifier

Abstract

The utility model belongs to the technical field of water purification equipment, and discloses a wastewater electromagnetic valve and a water purifier. The waste water electromagnetic valve comprises a valve cover and a waste water comparison part, a water inlet channel is formed in the valve cover, a water outlet channel is formed in the waste water comparison part, a waste water hole is formed in the waste water comparison part, the waste water comparison part is detachably inserted into the valve cover, the waste water hole is communicated with the water inlet channel and the water outlet channel, and water entering the water inlet channel enters the water outlet channel through the waste water hole. And the opening size of the wastewater hole is adjustable. According to the waste water electromagnetic valve, the valve cover and the waste water component are arranged to be detachable, under the condition that the waste water hole is blocked, the waste water component can be detached to be cleaned or replaced, the whole waste water electromagnetic valve does not need to be replaced, and the use cost is reduced. Moreover, the size of the opening of the wastewater hole of the wastewater electromagnetic valve is adjustable, so that a user can adjust the wastewater discharge flow according to requirements and the water quality of a use place, the wastewater electromagnetic valve does not need to be replaced for adjusting the wastewater discharge flow, and the use cost is further reduced.

Description

Technical Field

[0001] This utility model relates to the field of water purification equipment technology, and in particular to a wastewater solenoid valve and a water purifier. Background Technology

[0002] The wastewater solenoid valve is a crucial electrical component in a water purifier. Its primary function is to control the reverse osmosis membrane flushing system and regulate wastewater flow to achieve water purification. The wastewater solenoid valve has two states: de-energized and energized. In the de-energized state, water flows out through a small wastewater orifice. In the energized state, the valve's internal passage opens, increasing the wastewater discharge, which typically occurs during reverse osmosis membrane flushing. Currently, existing wastewater solenoid valves generally have a fixed small orifice, resulting in a constant wastewater ratio. This prevents users from flexibly adjusting the discharge volume unless the valve is replaced. Furthermore, when the water quality is poor, the small orifice size can easily clog the wastewater solenoid valve with prolonged use. This not only shortens filter life and affects the purifier's normal operation but can also harm the user's health. In such cases, replacement of the wastewater solenoid valve is necessary.

[0003] If all the above problems are solved by replacing the wastewater solenoid valve, frequent replacement of the wastewater solenoid valve will not only lead to a sharp increase in the cost of using the water purifier for users, but also seriously affect the normal use of the water purifier, thereby reducing the user experience. Utility Model Content

[0004] The first objective of this invention is to provide a wastewater solenoid valve that is not only easy to clean, but also allows for adjustment of the wastewater orifice opening size as needed, thereby reducing the cost of using a water purifier and improving the user experience.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A wastewater solenoid valve includes: a valve cover having an inlet channel; a wastewater measuring element having an outlet channel and a wastewater hole, the wastewater measuring element being detachably inserted into the valve cover, the wastewater hole connecting the inlet channel and the outlet channel; wherein water entering the inlet channel enters the outlet channel through the wastewater hole, and the opening size of the wastewater hole is adjustable.

[0007] Preferably, the valve cover includes a plug-in cavity, which has a plug-in cavity and a water passage hole communicating with the plug-in cavity; the wastewater proportioning element includes a plug-in portion, which is rotatably plugged into the plug-in cavity, and the wastewater hole is provided on the plug-in portion, which is opposite to and at least partially communicating with the water passage hole; rotating the wastewater proportioning element can change the communication area between the wastewater hole and the water passage hole.

[0008] Preferably, the wastewater hole is a first arc-shaped hole extending circumferentially along the insertion part; the water passage hole is a second arc-shaped hole extending circumferentially along the insertion cavity.

[0009] Preferably, the plug portion is inserted into the plug cavity along a first direction, the plug portion has a first end plate in the first direction, and the plug portion further includes a circumferentially protruding annular plate surrounding the first end plate; the plug cavity includes a first tube extending along the first direction, the first end plate inserted into the first tube blocks the first opening of the first tube, the first arc-shaped hole is provided on the annular plate, and the second arc-shaped hole is provided on the tube wall of the first tube.

[0010] Preferably, the plug portion is inserted into the plug cavity along the first direction, the plug portion has a first end plate in the first direction, and the wastewater hole is a first elongated hole provided on the first end plate; the plug cavity portion has a second end plate in the first direction, and the water passage hole is a second elongated hole provided on the second end plate.

[0011] Preferably, the wastewater proportioning component further includes an external threaded portion connected to the insertion portion, and the valve cover further includes an internal threaded portion communicating with the insertion cavity portion, wherein the internal threaded portion is threadedly connected to the external threaded portion.

[0012] Preferably, the wastewater proportioning component further includes a flat grip portion connected to the insertion portion.

[0013] Preferably, at least two flat grips are provided, and the at least two flat grips are spaced apart in the circumferential direction of the plug-in portion; and / or, the flat grips extend outward in the radial direction of the plug-in portion.

[0014] Preferably, the insertion cavity is further provided with a connecting hole communicating with the insertion cavity, the diameter of the connecting hole being larger than the diameter of the wastewater hole; the wastewater solenoid valve further includes an on / off valve core, the on / off valve core having a first state of blocking the connecting hole and a second state of opening the connecting hole, in the second state, water entering the inlet channel can enter the outlet channel through the opened connecting hole.

[0015] The second objective of this utility model is to provide a water purifier that has low operating costs and a superior user experience.

[0016] To achieve this objective, the present invention adopts the following technical solution:

[0017] A water purifier includes a wastewater discharge pipe and the aforementioned wastewater solenoid valve, wherein the wastewater solenoid valve is disposed on the wastewater discharge pipe.

[0018] The beneficial effects of this utility model are:

[0019] This utility model provides a wastewater solenoid valve comprising a valve cover and a wastewater proportioning element. The valve cover forms an inlet channel, and the wastewater proportioning element forms an outlet channel. The wastewater proportioning element has a wastewater hole, which is detachably inserted into the valve cover. The wastewater hole connects the inlet channel and the outlet channel. Water entering the inlet channel flows into the outlet channel through the wastewater hole, and the opening size of the wastewater hole is adjustable. By making the valve cover and wastewater proportioning element detachable, this wastewater solenoid valve allows the wastewater proportioning element to be removed for cleaning or replacement in case of blockage of the wastewater hole, eliminating the need to replace the entire wastewater solenoid valve and reducing operating costs. Furthermore, by making the opening size of the wastewater hole adjustable, this wastewater solenoid valve allows users to adjust the wastewater discharge flow rate according to their needs and the local water quality, eliminating the need to replace the wastewater solenoid valve to adjust the discharge flow rate, further reducing operating costs. Attached Figure Description

[0020] Figure 1 This is an assembly drawing of the valve cover and wastewater proportioning component provided by this utility model;

[0021] Figure 2 yes Figure 1 A schematic diagram of the structure shown from another perspective;

[0022] Figure 3 This is a top view of the valve cover and wastewater proportioning component provided by this utility model;

[0023] Figure 4 yes Figure 3 A cross-sectional view along the AA direction;

[0024] Figure 5 This is a schematic diagram of the valve cover provided by this utility model;

[0025] Figure 6 This is a top view of the valve cover provided by this utility model;

[0026] Figure 7 yes Figure 6 Cross-sectional view along the BB direction;

[0027] Figure 8 This is a schematic diagram of the wastewater proportioning component provided by this utility model;

[0028] Figure 9 This is a top view of the wastewater proportioning component provided by this utility model;

[0029] Figure 10 yes Figure 9 A cross-sectional view along the CC direction.

[0030] In the picture:

[0031] 100. Valve cover; 101. Water inlet channel; 102. Water passage hole; 103. Insertion cavity; 104. Valve port; 110. Insertion cavity section; 111. First pipe; 1111. First pipe port; 112. Second pipe; 1121. Connecting hole; 120. Internal thread section; 130. Cover section; 131. Cavity; 132. Mounting ear; 1321. First connecting hole; 140. Water inlet pipe section; 141. Water inlet; 150. Mounting plate; 151. Second connecting hole;

[0032] 200 Wastewater component; 201 Water outlet channel; 202 Wastewater hole; 210 Insertion part; 211 First end plate; 212 Annular plate; 213 Connecting plate; 220 External thread part; 230 Flat grip part. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0037] This utility model discloses a wastewater solenoid valve, which can be used in water purifiers. For example... Figures 1 to 10 As shown, the wastewater solenoid valve includes a valve cover 100 and a wastewater proportioning element 200. The valve cover 100 forms an inlet channel 101, and the wastewater proportioning element 200 forms an outlet channel 201. The wastewater proportioning element 200 is provided with a wastewater hole 202. The wastewater proportioning element 200 is detachably inserted into the valve cover 100. The wastewater hole 202 connects the inlet channel 101 and the outlet channel 201. Water entering the inlet channel 101 enters the outlet channel 201 through the wastewater hole 202, and the opening size of the wastewater hole 202 is adjustable.

[0038] Compared to existing wastewater solenoid valves that are not detachable after assembly, the wastewater solenoid valve provided by this utility model makes the valve cover 100 and the wastewater proportioning component 200 detachable. This allows the wastewater proportioning component 200 to be removed for cleaning and maintenance of the wastewater hole 202 when it becomes clogged, or the wastewater proportioning component 200 to be replaced directly. This design solves the problem of clogged wastewater hole 202 without replacing the entire wastewater solenoid valve, reducing the operating cost of the wastewater solenoid valve and improving the user experience.

[0039] Furthermore, compared to existing wastewater solenoid valves with non-adjustable discharge flow rates, the wastewater solenoid valve provided by this invention allows users to adjust the discharge flow rate according to their needs and the local water quality, eliminating the need to replace the wastewater solenoid valve to adjust the flow rate. This further reduces operating costs and improves the user experience. Specifically, when using a water purifier in areas with good water quality, the wastewater flow rate does not need to be too high, so the opening of the wastewater orifice 202 can be reduced to save water. Conversely, when using a water purifier in areas with poor water quality, the opening of the wastewater orifice 202 can be increased to ensure effective water purification.

[0040] Continue to refer to Figure 5 and Figure 7 As shown, the valve cover 100 also includes a cover body portion 130 and a water inlet pipe portion 140 connected to each other. A cavity 131 is formed inside the cover body portion 130, and a valve port 104 communicating with the cavity 131 is provided on the cover body portion 130. The water inlet pipe portion 140 is located outside the cover body portion 130, and the lumen of the water inlet pipe portion 140 communicates with the cavity 131. A water inlet 141 is formed at one end of the lumen of the water inlet pipe portion 140, and the lumen of the water inlet pipe portion 140 communicates with part of the cavity 131 to form a water inlet channel 101.

[0041] Optionally, a mounting ear 132 is formed on the cover portion 130, and the mounting ear 132 is provided with a first connecting hole 1321; further optionally, a plurality of mounting ears 132 are provided, and the plurality of mounting ears 132 are spaced apart in the circumferential direction of the cover portion 130, and each mounting ear 132 is provided with a first connecting hole 1321.

[0042] Optionally, a mounting plate 150 is provided on the water inlet pipe section 140, and the mounting plate 150 is provided with a second connecting hole 151; further optionally, two mounting plates 150 are provided, and the two mounting plates 150 are provided on both sides of the water inlet pipe section 140. The valve cover 100 can be fixed to other structures through the mounting plates 150.

[0043] In order to achieve a stable insertion and connection between the valve cover 100 and the wastewater proportioning component 200, in some embodiments, reference is continued to be made to... Figure 5 As shown, the valve cover 100 includes a insertion cavity 110, and the wastewater proportioning component 200 includes a insertion portion 210. The insertion portion 210 is inserted into the insertion cavity 103 along a first direction, which is... Figure 2The arrow indicates the direction. Optionally, the insertion cavity 110 is formed within the cavity 131 and connected to the cover portion 130. Optionally, the insertion cavity 110 includes a first tube 111 extending along a first direction, and the cover portion 130 has an insertion port communicating with one end of the first tube 111. The end of the first tube 111 away from the cover portion 130 forms a first tube opening 1111, and the insertion portion 210 of the wastewater proportioning component 200 can enter the first tube 111 through the insertion port. Furthermore, the first tube 111 is sealed, which can be done by providing an end plate at the first tube opening 1111 of the first tube 111, or by sealing the insertion portion 210 of the wastewater proportioning component 200.

[0044] Continue to refer to Figure 7 As shown, in some embodiments, the insertion cavity 110 is further provided with a communicating hole 1121 communicating with the insertion cavity 103, and the diameter of the communicating hole 1121 is larger than the diameter of the wastewater hole 202. The wastewater solenoid valve also includes an on / off valve core (not shown in the figure), which is installed in the valve port 104, and has a first state of blocking the communicating hole 1121 and a second state of opening the communicating hole 1121. It should be noted that the specific structure of the on / off valve core is prior art and will not be described in detail here.

[0045] When the valve core is in the second state, water entering the inlet channel 101 can enter the outlet channel 201 through the open connecting hole 1121. This increases the wastewater discharge to facilitate the flushing of the reverse osmosis membrane. It should be noted that when the wastewater solenoid valve is energized, the valve core switches to the second state. The opening and closing duration and timing are controlled by the water purifier's control mechanism; optionally, the opening and closing duration is 10-20 seconds. When the valve core is in the first state, water entering the inlet channel 101 enters the outlet channel 201 through the wastewater hole 202. In this state, the water purifier can discharge wastewater while producing pure water, and also ensures sufficient pressure before the reverse osmosis membrane.

[0046] Optionally, the insertion cavity 110 further includes a second tube 112, which is perpendicularly connected to the first tube 111, and the opening of the second tube 112 at the end of the second tube 112 away from the first tube 111 is the connecting hole 1121.

[0047] Optionally, the valve core and the cover 130 are connected by a connector. The valve core is provided with a third connecting hole. The connector passes through the first connecting hole 1321 and the third connecting hole to fix the valve core and the cover 130.

[0048] In some embodiments, the insertion portion 210 is rotatably inserted into the insertion cavity 103, a wastewater hole 202 is provided on the insertion portion 210, and the insertion cavity portion 110 is formed with the insertion cavity 103 and a water passage hole 102 communicating with the insertion cavity 103. The wastewater hole 202 and the water passage hole 102 are arranged opposite to each other and are at least partially connected. This arrangement can change the relative position of the wastewater hole 202 and the water passage hole 102 by rotating the wastewater measuring member 200, thereby changing the communication area between the wastewater hole 202 and the water passage hole 102.

[0049] In one embodiment, the wastewater hole 202 is a first arc-shaped hole extending circumferentially along the insertion portion 210; the water passage hole 102 is a second arc-shaped hole extending circumferentially along the insertion cavity 103. Optionally, in the circumferential direction of the insertion portion 210, the extension length of the second arc-shaped hole is not less than the extension length of the first arc-shaped hole, and in the axial direction of the insertion portion 210, the width of the second arc-shaped hole is not less than the width of the first arc-shaped hole, thus allowing the wastewater hole 202 to be fully exposed through the water passage hole 102. Of course, in other embodiments, the wastewater hole 202 can also be other shapes, such as circular, square, etc.

[0050] Furthermore, the insertion part 210 is inserted into the first tube 111 along the first direction. The insertion part 210 has a first end plate 211 in the first direction, and the insertion part 210 also includes a circumferentially protruding annular plate 212 surrounding the first end plate 211. The first end plate 211 inserted into the first tube 111 blocks the first opening 1111 of the first tube 111. A first arc-shaped hole is provided on the annular plate 212, and a second arc-shaped hole is provided on the tube wall of the first tube 111.

[0051] In another parallel embodiment, the wastewater hole 202 is a first elongated hole provided on the first end plate 211; the insertion cavity 110 has a second end plate in the first direction, and the water passage hole 102 is a second elongated hole provided on the second end plate. By rotating the wastewater measuring element 200, the relative positions of the first and second elongated holes can be changed, thereby changing the area of ​​the exposed portion of the wastewater hole 202. Optionally, the first and second elongated holes can be rectangular holes, oblong holes, elliptical holes, or other holes with an aspect ratio greater than 1.

[0052] It should be noted that the number of wastewater holes 202 and water passage holes 102 can be set to one or more as needed, as long as the purpose of adjusting the exposed area of ​​wastewater holes 202 can be achieved, that is, the purpose of adjusting the opening size of wastewater holes 202 can be achieved.

[0053] In addition to using the combination of the water passage 102 and the wastewater hole 202 to change the opening size of the wastewater hole 202, the opening size of the wastewater hole 202 can also be changed by setting a blocking component. For example, a movable or rotatable blocking plate can be set at the wastewater hole 202, and the opening size of the wastewater hole 202 can be adjusted by moving or rotating the blocking plate to block part of the wastewater hole 202; or multiple fan-shaped structures can be spliced ​​together to form the wastewater hole 202, and the opening size of the wastewater hole 202 can be changed by rotating the fan-shaped structure.

[0054] To achieve a detachable connection between the valve cover 100 and the wastewater proportioning component 200, in some embodiments, the wastewater proportioning component 200 further includes an externally threaded portion 220 connected to the insertion portion 210, and the valve cover 100 further includes an internally threaded portion 120 communicating with the insertion cavity portion 110. The internally threaded portion 120 and the externally threaded portion 220 are threadedly connected. Of course, besides threaded connections, other methods that enable detachment are also applicable to the valve cover 100 and the wastewater proportioning component 200. For example, a first magnetic ring is provided on the valve cover 100, and a second magnetic ring is provided on the wastewater proportioning component 200. The detachable connection between the valve cover 100 and the wastewater proportioning component 200 is achieved through the attraction of the first and second magnetic rings. It should be noted that the water outlet channel 201 passes through the externally threaded portion 220.

[0055] Continue to refer to Figure 8 As shown, the insertion part 210 also includes a connecting plate 213, which connects the annular plate 212 and the external threaded part 220. The connecting plate 213 has a non-closed structure, so that after the insertion part 210 is inserted into the insertion cavity 110, the water outlet channel 201 can communicate with the connecting hole 1121. Optionally, the connecting plate 213 is an arc-shaped plate. Optionally, multiple connecting plates 213 are provided, and the multiple connecting plates 213 are spaced apart, forming a water passage gap between adjacent connecting plates 213. In one embodiment, two connecting plates 213 are provided, and the two connecting plates 213 are arranged opposite to each other.

[0056] To facilitate rotation of the wastewater proportioning component 200, the wastewater proportioning component 200 also includes a flat gripping portion 230 connected to the insertion portion 210. The flat gripping portion 230 is convenient for the user to hold, making the assembly and disassembly of the wastewater proportioning component 200 easier. Optionally, the flat gripping portion 230 extends radially outward along the insertion portion 210. Optionally, at least two flat gripping portions 230 are provided, and the at least two flat gripping portions 230 are spaced apart in the circumferential direction of the insertion portion 210. In a specific embodiment, two flat gripping portions 230 are provided, and the two flat gripping portions 230 are symmetrically arranged on the insertion portion 210.

[0057] This utility model also discloses a water purifier, which includes a wastewater discharge pipe and the aforementioned wastewater solenoid valve, the wastewater solenoid valve being located on the wastewater discharge pipe. By using the aforementioned wastewater solenoid valve, the water purifier achieves low operating costs and a good user experience.

[0058] The water purifier also includes a control mechanism, which can be a centralized or distributed controller. For example, the controller can be a single microcontroller or a combination of multiple distributed microcontrollers. The microcontroller can run a control program to control the wastewater solenoid valve to achieve its function. In addition to the control mechanism, the water purifier also includes a shell, a purified water tank, a reverse osmosis filter element, and other structures. These structures are all existing technologies and will not be described in detail here.

[0059] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A wastewater solenoid valve, characterized in that, include: Valve cover (100), the valve cover (100) having a water inlet channel (101); Wastewater proportioning component (200), the wastewater proportioning component (200) forms an outlet channel (201), the wastewater proportioning component (200) is provided with a wastewater hole (202), the wastewater proportioning component (200) is detachably inserted into the valve cover (100), and the wastewater hole (202) connects the inlet channel (101) and the outlet channel (201); Water entering the inlet channel (101) enters the outlet channel (201) through the wastewater hole (202), and the opening size of the wastewater hole (202) is adjustable.

2. The wastewater solenoid valve according to claim 1, characterized in that, The valve cover (100) includes a plug-in cavity (110), the plug-in cavity (110) having a plug-in cavity (103) and a water passage hole (102) communicating with the plug-in cavity (103); The wastewater proportioning component (200) includes a plug-in portion (210), which is rotatably plugged into the plug-in cavity (103). The wastewater hole (202) is provided on the plug-in portion (210), and the wastewater hole (202) is opposite to and at least partially connected to the water passage hole (102). Rotating the wastewater ratio component (200) can change the communication area between the wastewater hole (202) and the water passage hole (102).

3. The wastewater solenoid valve according to claim 2, characterized in that, The wastewater hole (202) is a first arc-shaped hole extending circumferentially along the insertion part (210); The water passage hole (102) is a second arc-shaped hole extending circumferentially along the insertion cavity (103).

4. The wastewater solenoid valve according to claim 3, characterized in that, The plug-in portion (210) is inserted into the plug-in cavity (103) along the first direction. The plug-in portion (210) has a first end plate (211) in the first direction. The plug-in portion (210) also includes a circumferentially protruding annular plate (212) surrounding the first end plate (211). The insertion cavity (110) includes a first tube (111) extending along the first direction, a first end plate (211) inserted into the first tube (111) to block the first opening (1111) of the first tube (111), a first arc-shaped hole is provided on the annular plate (212), and a second arc-shaped hole is provided on the tube wall of the first tube (111).

5. The wastewater solenoid valve according to claim 2, characterized in that, The plug-in part (210) is inserted into the plug-in cavity (103) along the first direction. The plug-in part (210) has a first end plate (211) in the first direction. The wastewater hole (202) is a first elongated hole provided on the first end plate (211). The insertion cavity (110) has a second end plate in the first direction, and the water passage hole (102) is a second elongated hole provided on the second end plate.

6. The wastewater solenoid valve according to claim 2, characterized in that, The wastewater proportioning component (200) further includes an external threaded portion (220) connected to the insertion portion (210), and the valve cover (100) further includes an internal threaded portion (120) communicating with the insertion cavity portion (110), and the internal threaded portion (120) is threadedly connected to the external threaded portion (220).

7. The wastewater solenoid valve according to claim 2, characterized in that, The wastewater proportioning component (200) also includes a flat gripping part (230) connected to the insertion part (210).

8. The wastewater solenoid valve according to claim 7, characterized in that, The flat grip portion (230) is provided in at least two, and the at least two flat grip portions (230) are arranged at intervals in the circumferential direction of the plug portion (210); And / or, the flat grip portion (230) is provided to extend radially outward along the plug portion (210).

9. The wastewater solenoid valve according to claim 2, characterized in that, The insertion cavity (110) is also provided with a connecting hole (1121) communicating with the insertion cavity (103), and the diameter of the connecting hole (1121) is larger than the diameter of the wastewater hole (202). The wastewater solenoid valve also includes an on / off valve core, which has a first state of blocking the connecting hole (1121) and a second state of opening the connecting hole (1121). In the second state, water entering the inlet channel (101) can enter the outlet channel (201) through the opened connecting hole (1121).

10. A water purifier, characterized in that, It includes a wastewater discharge pipeline and a wastewater solenoid valve as described in any one of claims 1-9, wherein the wastewater solenoid valve is disposed on the wastewater discharge pipeline.

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