Wastewater solenoid valves and water treatment systems

Abstract

This application relates to a wastewater solenoid valve and a water treatment system, including a valve body and a scale inhibition module. The valve body defines a valve cavity, and the valve body has an inlet and an outlet. The inlet is connected to the valve cavity for inputting wastewater into the valve cavity, and the outlet is connected to the valve cavity for outputting wastewater from the valve cavity. The scale inhibition module is disposed within the valve cavity. Its inlet end is connected to the inlet to receive the wastewater input through the inlet, and its outlet end is connected to the outlet to output treated wastewater through the outlet. By placing the scale inhibition module within the valve cavity defined by the valve body, the module can react with scale ions in the input wastewater, thereby preventing scale formation. The treated wastewater is then discharged from the outlet. Thus, the scale inhibition module effectively limits scale formation within the valve body, preventing scale accumulation and valve blockage, thereby ensuring normal wastewater discharge.

Description

Technical Field

[0001] This application relates to the field of water treatment equipment technology, and in particular to a wastewater solenoid valve and a water treatment system. Background Technology

[0002] In various water treatment systems, wastewater solenoid valves play a crucial role, serving as the core component for controlling wastewater discharge. However, a serious problem exists during the use of wastewater solenoid valves: over time, various impurities and minerals in the wastewater, such as calcium and magnesium ions, gradually form scale inside the valve. This scale accumulation not only narrows the water flow channel of the solenoid valve but can even cause complete blockage, severely impacting normal wastewater discharge. Furthermore, scale accumulation can trigger a series of other problems, such as increasing the operating pressure of the equipment and reducing the overall efficiency of the system. In severe cases, scale can even damage the entire water treatment system, increasing maintenance costs and causing considerable inconvenience and additional financial burden on the normal operation of the equipment. Utility Model Content

[0003] Therefore, it is necessary to provide a wastewater solenoid valve that addresses the problem of scale buildup inside existing wastewater solenoid valves after long-term operation.

[0004] The first aspect of this application provides a wastewater solenoid valve, comprising:

[0005] A valve body having a valve cavity, an inlet, and an outlet, the inlet being connected to the valve cavity for inputting wastewater into the valve cavity, and the outlet being connected to the valve cavity for outputting wastewater from the valve cavity; and

[0006] A scale inhibition module is provided inside the valve cavity. The inlet end of the scale inhibition module is connected to the inlet port, and the outlet end of the scale inhibition module is connected to the outlet port. The scale inhibition module is used to receive wastewater input through the inlet port and output treated wastewater through the outlet port.

[0007] In one embodiment, the valve chamber is divided into a first receiving chamber and a second receiving chamber, the first receiving chamber being connected to the second receiving chamber and the first receiving chamber being connected to the inlet, and the second receiving chamber being connected to the outlet.

[0008] In one embodiment, the scale inhibition module includes a scale inhibition element and a scale inhibitor. The scale inhibition element is disposed in the first receiving cavity, and the scale inhibition element has a receiving cavity that is connected to the first receiving cavity. The scale inhibitor is disposed in the receiving cavity.

[0009] In one embodiment, the scale inhibitor includes a first plate with a flow hole, and the wastewater input into the first receiving cavity is adapted to flow into the second receiving cavity through the flow hole.

[0010] In one embodiment, the scale inhibitor further includes a second plate, which is arranged circumferentially along the first plate, and a flow groove is formed on the second plate, the flow groove connecting the first receiving cavity and the receiving cavity.

[0011] In one embodiment, multiple flow channels are provided, and the multiple flow channels are arranged at intervals on the second plate.

[0012] In one embodiment, the valve body is further provided with a flushing water inlet, which is connected to the water inlet and the water outlet, and the first accommodating cavity and the second accommodating cavity are arranged around the flushing water inlet.

[0013] In one embodiment, the wastewater solenoid valve further includes a diaphragm and a pressure plate. The pressure plate is connected to the diaphragm and is used to press the diaphragm to seal the flushing water inlet. The diaphragm is provided with a first flow hole, and the pressure plate is provided with a second flow hole. The first flow hole and the second flow hole are coaxially arranged and connect the inlet and the flushing water inlet.

[0014] In one embodiment, the wastewater solenoid valve further includes an electromagnetic device, a valve core, and an elastic element. The electromagnetic device has an installation cavity. One end of the elastic element is connected to the valve core, and the other end of the elastic element is connected to the inner wall of the installation cavity. The valve core can move along its axial direction to close or open the second flow passage.

[0015] The second aspect of this application provides a water treatment system that uses the wastewater solenoid valve provided in the first aspect of this application.

[0016] In the aforementioned wastewater solenoid valve and water treatment system, by placing the scale inhibition module within the valve cavity defined by the valve body, when the inlet of the valve body is connected to the inlet pipe and the outlet of the valve body is connected to the outlet pipe, the wastewater entering through the inlet pipe first passes through the scale inhibition module. The scale inhibition module can react with the scale ions in the input wastewater, thereby preventing the formation of scale. Then, the treated wastewater is discharged from the outlet. Thus, the scale inhibition module effectively limits the scale formation of wastewater within the valve body, reduces the scale formed within the valve body, and prevents scale accumulation within the valve body from causing blockage, thereby ensuring the normal discharge of wastewater. Attached Figure Description

[0017] Figure 1 This is an exploded view of a wastewater solenoid valve according to an embodiment of this application.

[0018] Figure 2 This is a cross-sectional view of a wastewater solenoid valve according to an embodiment of this application.

[0019] Figure 3 This is a schematic diagram of the valve body of a wastewater solenoid valve according to an embodiment of this application.

[0020] Figure 4 This is a cross-sectional view of the valve body of a wastewater solenoid valve according to an embodiment of this application.

[0021] Figure 5 This is a schematic diagram of the scale inhibition module of a wastewater solenoid valve according to an embodiment of this application.

[0022] Explanation of reference numerals in the attached figures:

[0023] 10. Valve body; 11. Inlet; 12. Outlet; 13. Valve cavity; 131. First receiving cavity; 132. Second receiving cavity; 14. Flushing water outlet; 15. Diaphragm; 151. First flow passage; 16. Pressure plate; 161. Second flow passage; 17. Flow channel;

[0024] 20. Scale inhibition module; 21. Scale inhibition component; 211. Receptacle; 212. First plate; 2121. Flow hole; 213. Second plate; 2131. Flow groove; 22. Scale inhibitor;

[0025] 30. Control mechanism; 31. Electromagnetic device; 32. Valve core; 33. Elastic element. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0027] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as a limitation of this application.

[0028] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] Currently, during long-term use, various impurities and minerals in wastewater, such as calcium and magnesium ions, gradually deposit inside the wastewater solenoid valve, forming scale. This continuous accumulation of scale not only narrows the water flow channel of the solenoid valve but can even completely block it, affecting the normal discharge of wastewater. Furthermore, scale problems can trigger a series of other issues, including increased equipment operating pressure, reduced overall system efficiency, and in severe cases, damage to the entire water treatment system, significantly increasing maintenance costs. Therefore, the traditional approach to address this issue is to periodically clean, maintain, or replace the wastewater solenoid valve. However, this is time-consuming and labor-intensive, and frequent switching and disassembly can accelerate wear and shorten its lifespan, leading to increased costs. In this application, the wastewater solenoid valve structure is designed to prevent scale formation when wastewater flows through it, thus ensuring long-term stable and smooth operation.

[0030] like Figure 1 As shown in the figure, this application provides a wastewater solenoid valve, including a valve body 10 and a scale inhibition module 20. The valve body 10 defines a valve cavity 13, and has an inlet 11 and an outlet 12. The inlet 11 is connected to the valve cavity 13 for connecting an external inlet pipe, allowing wastewater to be input into the valve cavity 13 through the inlet 11. The outlet 12 is connected to the valve cavity 13 for connecting an external outlet pipe, allowing the wastewater input into the valve cavity 13 to flow into the outlet pipe and be discharged through the outlet 12. The scale inhibition module 20 is disposed inside the valve cavity 13. The inlet end of the scale inhibition module 20 is connected to the inlet 11, and its outlet end is connected to the outlet 12. The function of the scale inhibition module 20 is to treat the input wastewater to ensure that scale does not form inside the valve body 10. Specifically, the scale inhibition module 20 can react with the scale ions contained in the input wastewater, thereby inhibiting these scale ions from forming scale inside the wastewater solenoid valve. This ensures that the wastewater solenoid valve can operate smoothly and stably for a long time, and avoids problems such as blockage or damage to the wastewater solenoid valve caused by scale accumulation.

[0031] like Figure 4As shown, the valve chamber 13 includes a first receiving chamber 131 and a second receiving chamber 132. Specifically, the first receiving chamber 131 is connected to the outside through an inlet 11, allowing wastewater to flow into it. The design of the first receiving chamber 131 allows the wastewater to undergo preliminary treatment or remain there for further processing. Meanwhile, the second receiving chamber 132 is connected to the outside through an outlet 12. The function of this outlet 12 is to guide the wastewater treated by the first receiving chamber 131 out of the valve chamber 13, thereby achieving wastewater discharge.

[0032] It is worth noting that the first receiving cavity 131 and the second receiving cavity 132 are connected by a flow passage 17. The flow passage 17 allows wastewater flowing into the first receiving cavity 131 from the inlet 11 to flow smoothly into the second receiving cavity 132. This design ensures that the wastewater can flow smoothly between the two receiving cavities.

[0033] Therefore, through the above design, after entering the valve chamber 13, the wastewater first flows into the first receiving chamber 131 for scale inhibition treatment, then flows into the second receiving chamber 132 through the flow channel 17, and finally is discharged through the outlet 12. The whole process is smooth and efficient, ensuring the effectiveness of wastewater treatment and the smoothness of discharge.

[0034] like Figure 5 As shown, the scale inhibition module 20 is designed to ensure high efficiency and reliability in the wastewater scaling treatment process. Specifically, the scale inhibition module 20 includes a scale inhibitor 21 and a scale inhibitor 22. The scale inhibitor 21 is housed inside the first receiving cavity 131, and a receiving cavity 211 is also provided inside the scale inhibitor 21. The receiving cavity 211 provides a dedicated storage space for the scale inhibitor 22, allowing it to be placed within it.

[0035] When wastewater flows into the first receiving cavity 131 through the inlet 11, it first enters the receiving cavity 211 inside the scale inhibitor 21. During this process, the wastewater flowing into the receiving cavity 211 reacts chemically with the scale inhibitor 22. The scale inhibitor 22 has unique chemical properties and can react with scale-forming ions in the wastewater, thereby effectively limiting and reducing the presence of these scale-forming ions in the wastewater. In this way, the scale inhibitor 22 can significantly reduce the possibility of scale formation during wastewater flow.

[0036] Subsequently, the wastewater treated by scale inhibitor 22 continues to flow from the first receiving chamber 131 into the second receiving chamber 132. Since scale inhibitor 22 has effectively reduced the presence of scale-forming ions in the wastewater, the wastewater flowing into the second receiving chamber 132 will not easily form scale within it. This process greatly reduces the risk of scale formation within the valve body 10, thereby avoiding the problem of clogging of the wastewater solenoid valve due to scale buildup. Through this design, the scale inhibitor module 20 not only improves the efficiency of wastewater treatment but also ensures the stable operation of the entire system and extends the service life of the equipment.

[0037] like Figure 5 As shown, the scale inhibitor 21 includes a first plate 212 and a second plate 213, both of which are disposed within the first receiving cavity 131. The first plate 212 is an arc-shaped plate structure with a certain degree of curvature and thickness. The second plate 213 is arranged along the circumference of the first plate 212, specifically along both the inner and outer circumferences of the first plate 212. Therefore, the second plate 213 can cover the edge of the first plate 212, thus forming a complete protective layer on the first plate 212.

[0038] It is worth noting that at the end opposite to the first plate 212, there is no other plate for closure; that is, one end of the second plate 213 is connected to the first plate 212, while the other end is not connected to any other plate. Therefore, the end opposite to the first plate 212 is in an open state, allowing wastewater to freely enter and exit. Furthermore, this open design facilitates the replacement of the scale inhibitor 22 placed in the receiving cavity 211.

[0039] To further ensure the effectiveness of the scale inhibitor 22, flow holes 2121 are formed on the first plate 212. These flow holes 2121 are staggered on the first plate 212, that is, the position of each flow hole 2121 is deviated from the position of the adjacent flow hole 2121. This staggered arrangement can increase the complexity of liquid flow, thereby increasing the contact time between the scale inhibitor 22 and the fluid, and thus enhancing its scale inhibition effect.

[0040] Furthermore, the diameter of the flow-through orifice 2121 is designed to be smaller than the diameter of the scale inhibitor 22 placed in the receiving cavity 211. This prevents the scale inhibitor 22 in the receiving cavity 211 from flowing out through the flow-through orifice 2121 under the influence of wastewater, ensuring that the scale inhibitor 22 can be effectively fixed in the receiving cavity 211, thereby continuously exerting its scale inhibition effect during wastewater treatment and ensuring the efficient operation of the system.

[0041] like Figure 5As shown, multiple flow channels 2131 are also provided on the second plate 213. These flow channels 2131 are arranged circumferentially along the first plate 212, and are spaced apart on the surface of the second plate 213. One end of each flow channel 2131 is designed to be closed, while the other end extends to the edge of the second plate 213 to form an opening. The spacing between adjacent flow channels 2131 remains consistent. The flow channels 2131 connect the first receiving cavity 131 and the receiving cavity 211. Specifically, when wastewater flows into the first receiving cavity 131 from the inlet 11, these flow channels 2131 become channels for the wastewater to flow into the receiving cavity 211. To further optimize the flow path of the wastewater, the flow channels 2131 are designed as long strips to increase the speed at which wastewater flows into the receiving cavity 211.

[0042] Furthermore, the combined arrangement of the flow channel 2131 and the flow hole 2121 ensures that the wastewater flowing into the receiving cavity 211 is not immediately discharged, but rather remains within the receiving cavity 211 for a longer period. This allows the scale inhibitor 22 sufficient time to fully react with the scale ions in the wastewater, effectively preventing the deposition and accumulation of scale ions in the second receiving cavity 132, thus avoiding blockage. Therefore, this design allows wastewater to flow smoothly within the valve body 10 without scaling, ensuring the stable and smooth operation of the entire system.

[0043] like Figure 2 or Figure 3 As shown, the valve body 10 is also provided with a flushing port 14, which is located in the middle of the valve body 10. The first receiving cavity 131 and the second receiving cavity 132 are arranged around the flushing port 14. The inlet end of the flushing port 14 can be connected to the inlet 11, and the outlet end of the flushing port 14 can be connected to the outlet 12. Thus, the inlet end of the flushing port 14 is set to be connected to the inlet 11, and the outlet end is set to be connected to the outlet 12, thereby ensuring that the flushing port 14 can be directly connected to the wastewater input by the inlet 11, and ensuring the water flow rate of the flushing port 14 during flushing operations.

[0044] Additionally, a diaphragm 15 and a pressure plate 16 are provided at the inlet end of the flushing outlet 14. The pressure plate 16 is connected to the diaphragm 15, thereby fixing the diaphragm 15 to the inlet end of the flushing outlet 14. A first flow hole 151 and a second flow hole 161 are coaxially formed on the diaphragm 15 and the pressure plate 16, respectively. The first flow hole 151 and the second flow hole 161 are connected to the inlet 11 and the flushing outlet 14. Therefore, wastewater flowing into the inlet 11 can directly flow into the first flow hole 151 and the second flow hole 161, and then into the flushing outlet 14. This arrangement effectively increases the wastewater flow rate that the flushing outlet 14 can output. Furthermore, a first flow hole 151 and a second flow hole 161 are coaxially formed on the diaphragm 15 and the pressure plate 16. Therefore, wastewater flowing in from inlet 11 can flow directly into flushing port 14, or it can pass through the second flow hole 161 and the first flow hole 151 in sequence before entering flushing port 14. Furthermore, the flushing port 14 enables effective flushing and cleaning of the valve body 10. The connection between flushing port 14 and inlet 11 effectively increases the wastewater flow rate it can output. This design not only improves flushing efficiency but also ensures stable operation of the wastewater solenoid valve.

[0045] like Figure 2 As shown, the wastewater solenoid valve also includes a control mechanism 30, which includes an electromagnetic device 31 and a valve core 32. The valve core 32 is movably disposed within the electromagnetic device 31 via an elastic member 33. The electromagnetic device 31 has an installation cavity 311, within which the valve core 32 can be disposed. One end of the elastic member 33 is connected to the valve core 32, and the other end of the elastic member 33 is connected to the inner wall of the installation cavity 311. The valve core 32 can move axially within the installation cavity 311 to close or open the coaxially arranged first flow hole 151 and second flow hole 161.

[0046] In addition, the control mechanism 30 has a normal state and a flushing state. When the control mechanism 30 is in the normal state, the electromagnetic device 31 is closed, and the valve core 32 closes the first flow hole 151 and the second flow hole 161 under the action of the elastic element 33. At this time, the wastewater flowing into the inlet 11 can only flow into the second receiving cavity 132 through the scale inhibition module 20 and flow out through the outlet 12 connected to the second receiving cavity 132. At this time, the outflow rate is small. When the control mechanism 30 is in the flushing state, the electromagnetic device 31 is activated, and the valve core 32 is attracted and retracted into the electromagnetic device 31 by electromagnetic force. At this time, the valve core 32 no longer closes the first flow hole 151 and the second flow hole 161. The first flow hole 151 and the second flow hole 161 are in the open state. The first flow hole 151 and the second flow hole 161 in the open state can introduce wastewater flowing in from the inlet 11, and then can output a large flow of wastewater directly to the outlet 12 through the flushing water port 14. This large flow of wastewater output can effectively achieve the purpose of flushing scale and ensure the cleanliness and efficient operation of the wastewater solenoid valve.

[0047] This application provides a water treatment system that employs the wastewater solenoid valve described in any of the above embodiments. This wastewater solenoid valve is connected to the wastewater outlet of a water purifier within the water treatment system to ensure efficient and stable operation and stable water quality. In the wastewater solenoid valve used here, a scale-inhibiting module 20 is installed within the valve body 10, defining a specific valve chamber 13 within the valve body 10. When the inlet 11 of the valve body 10 is connected to the inlet pipe and the outlet 12 is connected to the outlet pipe, the wastewater entering through the inlet pipe first flows through the scale-inhibiting module 20. The scale-inhibiting module 20 reacts with scale-forming ions in the wastewater to effectively prevent scale formation. Subsequently, the treated wastewater is discharged from the outlet 12. Therefore, the scale-inhibiting module 20 effectively inhibits scale formation within the valve body 10, reduces scale buildup, and avoids blockage caused by scale accumulation, thus ensuring smooth wastewater discharge.

[0048] Therefore, this water treatment system aims to effectively prevent scale buildup and blockage inside the wastewater solenoid valve. The installation of this wastewater solenoid valve reduces maintenance costs and operational stress, ensuring unobstructed flow during long-term use and guaranteeing its normal operation and stability. By incorporating a unique scale-inhibiting structure within the wastewater solenoid valve, the scale inhibitor reacts with scale-forming ions in the wastewater as it flows through, preventing scale formation and ensuring long-term stable operation of the solenoid valve. This reduces maintenance costs and improves the overall efficiency of the water treatment system.

[0049] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0050] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0051] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A wastewater solenoid valve, characterized in that, include: The valve body (10) has a valve cavity (13), an inlet (11) and an outlet (12). The inlet (11) is connected to the valve cavity (13) for inputting wastewater into the valve cavity (13), and the outlet (12) is connected to the valve cavity (13) for outputting wastewater from the valve cavity (13). as well as The scale inhibition module (20) is located in the valve chamber (13). The inlet end of the scale inhibition module (20) is connected to the inlet (11), and the outlet end of the scale inhibition module (20) is connected to the outlet (12). The scale inhibition module (20) is used to receive the wastewater input from the inlet (11) and output the treated wastewater to the outlet (12).

2. The wastewater solenoid valve according to claim 1, characterized in that, The valve chamber (13) is divided into a first receiving chamber (131) and a second receiving chamber (132). The first receiving chamber (131) is connected to the second receiving chamber (132), and the first receiving chamber (131) is connected to the inlet (11). The second receiving chamber (132) is connected to the outlet (12).

3. The wastewater solenoid valve according to claim 2, characterized in that, The scale inhibition module (20) includes a scale inhibition component (21) and a scale inhibitor (22). The scale inhibition component (21) is disposed in the first receiving cavity (131), and the scale inhibition component (21) is provided with a receiving cavity (211). The receiving cavity (211) is connected to the first receiving cavity (131), and the scale inhibitor (22) is disposed in the receiving cavity (211).

4. The wastewater solenoid valve according to claim 3, characterized in that, The scale inhibitor (21) includes a first plate (212), on which a flow hole (2121) is provided, and the wastewater input into the first receiving cavity (131) is suitable to flow into the second receiving cavity (132) through the flow hole (2121).

5. The wastewater solenoid valve according to claim 4, characterized in that, The scale inhibitor (21) further includes a second plate (213), which is arranged circumferentially along the first plate (212), and a flow groove (2131) is formed on the second plate (213), which connects the first receiving cavity (131) and the receiving cavity (211).

6. The wastewater solenoid valve according to claim 5, characterized in that, The flow channels (2131) are provided in multiple ways, and the multiple flow channels (2131) are arranged at intervals on the second plate (213).

7. The wastewater solenoid valve according to claim 2, characterized in that, The valve body (10) is also provided with a flushing water port (14), which is connected to the water inlet (11) and the water outlet (12), and the first receiving cavity (131) and the second receiving cavity (132) are arranged around the flushing water port (14).

8. The wastewater solenoid valve according to claim 7, characterized in that, The wastewater solenoid valve also includes a diaphragm (15) and a pressure plate (16). The pressure plate (16) is connected to the diaphragm (15). The pressure plate is used to press the diaphragm (15) to seal the flushing port (14). The diaphragm (15) is provided with a first flow hole (151), and the pressure plate (16) is provided with a second flow hole (161). The first flow hole (151) and the second flow hole (161) are coaxially arranged and connect the inlet (11) and the flushing port (14).

9. The wastewater solenoid valve according to claim 8, characterized in that, The wastewater solenoid valve also includes a solenoid device (31), a valve core (32), and an elastic element. The solenoid device (31) has an installation cavity (311). One end of the elastic element (33) is connected to the valve core (32), and the other end of the elastic element (33) is connected to the inner wall of the installation cavity (311). The valve core (32) can move along its axial direction to close or open the second flow hole (161).

10. A water treatment system, characterized in that, Includes the wastewater solenoid valve as described in any one of claims 1 to 9.

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