Waste water valve and water purification apparatus

Abstract

The application discloses a wastewater valve and a water purification device. The wastewater valve comprises a valve body, a valve core assembly, a diaphragm assembly and a flow guide. The valve body has a water inlet flow channel and a water outlet flow channel, and a valve cavity is formed in the valve body. The valve core assembly and the diaphragm assembly are arranged in the valve body. The flow guide is arranged in the valve cavity and divides the valve cavity into a high-pressure cavity and a low-pressure cavity. The high-pressure cavity is communicated with the water inlet flow channel, and the low-pressure cavity is communicated with the water outlet flow channel. The flow guide is arranged in a spiral shape and forms a throttling flow channel. The throttling flow channel is communicated with the high-pressure cavity and the low-pressure cavity. The cross-sectional area of the inlet end of the throttling flow channel is larger than that of the outlet end. The wastewater valve can solve the problem that the throttling flow channel of the wastewater valve is prone to blockage.

Description

Technical Field

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

[0002] In related technical fields, wastewater solenoid valves are installed on the wastewater pipelines of water purification equipment. However, when the wastewater solenoid valve throttles, the liquid passing through the throttling channel is wastewater with a high concentration of calcium and magnesium ions. With prolonged use, the throttling channel of existing valves is prone to blockage, leading to valve failure and reducing the lifespan of the water purification equipment. Summary of the Invention

[0003] The main objective of this invention is to provide a wastewater valve that addresses the problem of easy clogging of the throttling channel in wastewater valves.

[0004] To achieve the above objectives, the present invention proposes a wastewater valve, comprising a valve body, a valve core assembly, a diaphragm assembly, and a flow guide; the valve body has an inlet channel and an outlet channel, and a valve cavity is formed within the valve body; the valve core assembly is movably disposed within the valve body; the diaphragm assembly is disposed within the valve body; the flow guide is disposed within the valve cavity and defines a high-pressure chamber and a low-pressure chamber within the valve cavity, the high-pressure chamber being connected to the inlet channel, and the low-pressure chamber being connected to the outlet channel; the flow guide is spirally arranged and forms a throttling channel, the throttling channel connecting the high-pressure chamber and the low-pressure chamber, the throttling channel having an inlet end and an outlet end, the cross-sectional area of ​​the inlet end being larger than the cross-sectional area of ​​the outlet end.

[0005] In one embodiment, the flow guide has opposing inner and outer sidewalls that form at least a portion of the throttling channel.

[0006] In one embodiment, the shortest distance between the inner wall and the outer wall forming at least a portion of the throttling channel ranges from 0.2 mm to 1.5 mm.

[0007] In one embodiment, the cross-sectional area of ​​the throttling channel gradually decreases from the inlet end to the outlet end.

[0008] In one embodiment, the throttling channel is provided with a flow-slowing slope, which extends obliquely from the inlet end to the outlet end in the direction from the bottom of the valve cavity to the opening of the valve cavity.

[0009] In one embodiment, the angle between the surface of the flow ramp and the bottom of the valve chamber ranges from 30° to 70°.

[0010] In one embodiment, the flow guide has a top surface that is away from the bottom of the valve cavity and is parallel to the bottom of the valve cavity.

[0011] In one embodiment, the inlet end is located near the outlet end of the water inlet channel.

[0012] In one embodiment, the wastewater valve further includes a valve core assembly movably disposed within the valve body between a filtration position and a flushing position.

[0013] The present invention also proposes a water purification device, which includes the wastewater valve. The wastewater valve includes a valve body, a valve core assembly, a diaphragm assembly, and a flow guide; the valve body has an inlet channel and an outlet channel, and a valve cavity is formed within the valve body; the valve core assembly is movably disposed within the valve body; the diaphragm assembly is disposed within the valve body; the flow guide is disposed within the valve cavity and defines a high-pressure chamber and a low-pressure chamber within the valve cavity, the high-pressure chamber being connected to the inlet channel, and the low-pressure chamber being connected to the outlet channel; the flow guide is spirally arranged and forms a throttling channel, the throttling channel connecting the high-pressure chamber and the low-pressure chamber, the throttling channel having an inlet end and an outlet end, the cross-sectional area of ​​the inlet end being larger than the cross-sectional area of ​​the outlet end.

[0014] The technical solution of this invention involves incorporating a spiral-shaped guide within the valve body, forming a throttling channel. The high-pressure chamber and low-pressure chamber are connected through this throttling channel, and the cross-sectional area of ​​the throttling channel gradually decreases in the water outlet direction. When the wastewater valve is in flushing mode, the raw water used for flushing enters the high-pressure chamber from the valve body's inlet channel and then continues to flow along the throttling channel between the spiral-shaped guides due to the inertia of the water flow. During this process, the raw water flowing through the throttling channel can replace the high-concentration wastewater remaining in the throttling channel with low-concentration raw water, significantly reducing the clogging of the solenoid valve caused by scale buildup, thereby extending the service life of the solenoid valve. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the wastewater valve of the present invention;

[0017] Figure 2 for Figure 1 Cross-sectional view of the wastewater valve;

[0018] Figure 3 for Figure 1 Schematic diagram of the middle valve body;

[0019] Figure 4 This is a structural schematic diagram of the valve body from another perspective in the figure;

[0020] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0021] Figure 6 for Figure 4 Sectional view along line II.

[0022] Explanation of icon numbers:

[0023] 10 Wastewater valve 142 Export end 100 Valve body 143 Slow-flowing slope 110 valve chamber 200 Valve core assembly 111 High pressure chamber 300 diaphragm assembly 112 low-pressure chamber 400 air guide 113 Pressure control chamber 410 inner wall 120 Inlet channel 420 lateral wall 130 Water outlet channel 430 Top surface 140 Throttling channel 500 Coil assembly 141 import end 600 Return spring

[0024] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0026] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0027] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0028] Solenoid valves are electromagnetically controlled industrial devices, fundamental components of automated systems used to control fluids. They are actuators, not limited to hydraulic or pneumatic systems. Used in industrial control systems to adjust the direction, flow rate, speed, and other parameters of the medium. Solenoid valves can be used with different circuits to achieve the desired control, ensuring both precision and flexibility. Solenoid valves operate by applying electromagnetic force to an iron core sealed within a magnetically shielded sleeve, eliminating dynamic seals and making external leakage easy to prevent. Solenoid valves themselves are simple in structure and inexpensive, easier to install and maintain than other types of actuators such as control valves. More significantly, the resulting automated control systems are much simpler and cheaper. Because solenoid valves are controlled by on / off signals, they are very easy to connect to control circuits. In today's era of widespread computer use and significantly reduced prices, the advantages of solenoid valves are even more pronounced. The response time of solenoid valves can be as short as a few milliseconds, and even pilot-operated solenoid valves can be controlled within tens of milliseconds. Due to their self-contained circuitry, they are more sensitive than other automated control valves. Well-designed solenoid valve coils consume very little power, making them energy-efficient; some can even be designed to automatically maintain the valve position only after triggering, consuming no power under normal conditions. Solenoid valves are small in size, saving space and are lightweight and aesthetically pleasing.

[0029] In water purification equipment, reverse osmosis (RO) filters are often used to filter ions in the water, such as calcium and magnesium ions, to reduce water hardness. However, due to the working principle of RO filters, wastewater is generated during filtration. To flush the inlet of the RO filter after it stops working, and to flush out any unfiltered water remaining at the inlet, thereby reducing the possibility of calcium and magnesium ions passing through the RO membrane and flowing out from the outlet, a wastewater solenoid valve with both throttling and flushing functions is now used. This type of wastewater solenoid valve remains normally closed during the operation of the RO filter to continuously discharge wastewater, and opens when the RO filter stops working to flush the inlet (i.e., the front end) of the RO filter.

[0030] In a typical wastewater solenoid valve, even when it remains normally closed, water continues to flow into the inlet, resulting in high water pressure and naturally creating a high-pressure zone within the valve. To discharge wastewater filtered by the reverse osmosis filter, the solenoid valve is equipped with a throttling pipe or orifice. These pipes and orifices discharge wastewater entering the high-pressure zone. To prevent excessive flow, the throttling pipes and orifices are typically very small to control the flow rate. Water flow rate; however, since the throttling pipe or orifice is generally designed to be small and is used to discharge wastewater, when the wastewater solenoid valve is opened, the water pressure in the valve body will drop sharply, so the pressure difference between the inlet and outlet of the wastewater solenoid valve will approach zero. Consequently, the wastewater remaining in the throttling pipe or orifice will stagnate in the throttling pipe or orifice. Over time, calcium and magnesium ions in the wastewater will precipitate and crystallize, causing the throttling pipe or orifice to fail and reducing the service life of the water purification equipment.

[0031] Therefore, this invention proposes a wastewater valve that can be applied to water purification equipment and related flow path systems. The water purification equipment can be a water purifier, a drinking water purifier, or a direct drinking water machine, etc.

[0032] Please see Figures 1 to 5 In one embodiment of the present invention, the wastewater valve 10 includes a valve body 100 and a flow guide 400; the valve body 100 has an inlet channel 120 and an outlet channel 130, and a valve cavity 110 is formed inside the valve body 100; the flow guide 400 is disposed in the valve cavity 110 and defines a high-pressure cavity 111 and a low-pressure cavity 112 in the valve cavity 110, the high-pressure cavity 111 is connected to the inlet channel 120, and the low-pressure cavity 112 is connected to the outlet channel 130; the flow guide 400 is spirally arranged and forms a throttling channel 140, the throttling channel 140 connects the high-pressure cavity 111 and the low-pressure cavity 112, the throttling channel 140 has an inlet end 141 and an outlet end 142, and the cross-sectional area of ​​the inlet end 141 is larger than the cross-sectional area of ​​the outlet end 142.

[0033] Specifically, the valve body 100 is provided with an inlet channel 120 and an outlet channel 130, which are formed by an inlet pipe and an outlet pipe, respectively, for connecting to an external water circuit. Wastewater flows into the valve body 100 through the inlet channel 120 and flows out through the outlet channel 130. The valve body 100 can be made of rigid materials such as ABS, HIPS, PP, PC, and POM, or metal or alloy materials. In this embodiment, the valve body 100 is made of POM material. POM material has high strength and precision, is lightweight, and has a low cost. Furthermore, as a material for the valve body 100, it is not easily rusted.

[0034] Please see Figure 2 and Figure 3 The valve body 100 also contains a valve cavity 110. A flow guide 400 is installed within the valve cavity 110, dividing it into a high-pressure cavity 111 and a low-pressure cavity 112. The high-pressure cavity 111 is connected to the inlet channel 120, and the low-pressure cavity 112 is connected to the outlet channel 130. The flow guide 400 also forms a throttling channel 140, which connects the high-pressure cavity 111 and the low-pressure cavity 112. The throttling channel 140 increases the resistance encountered by wastewater in the wastewater valve 10, thereby reducing the wastewater flow velocity and achieving a throttling effect.

[0035] It should be noted that the guide member 400 is arranged in a spiral shape, and the spiral-shaped throttling member forms a throttling channel 140. The throttling channel 140 has an inlet end 141 and an outlet end 142. The cross-sectional area of ​​the inlet end 141 is larger than that of the outlet end 142. It should be noted that, in the direction of wastewater flow, the cross-sectional area of ​​the throttling channel 140 can gradually decrease, or it can decrease first, then increase, and then decrease again; there is no specific limitation on this. In this embodiment, the cross-sectional area of ​​the throttling channel 140 is arranged to gradually decrease. During the throttling process, the cross-sectional area of ​​the throttling channel 140 gradually decreases, which helps to alleviate pressure drop and reduce noise.

[0036] Please see Figure 2 In one embodiment, the wastewater valve 10 further includes a valve core assembly 200, which has a filtering position and a flushing position and is movable between the filtering position and the flushing position; the wastewater valve 10 also includes a sealing membrane, the membrane assembly 300 being disposed in the valve body 100 and defining the high-pressure chamber 111, the low-pressure chamber 112, and a pressure control chamber 113 communicating with the high-pressure chamber 111 within the valve body 100; the valve core assembly 200 is movably disposed within the pressure control chamber 113; wherein,

[0037] When the valve core assembly 200 is in the filtration position, the diaphragm assembly 300 connects the high-pressure chamber 111 and the pressure control chamber 113, and cuts off the connection between the low-pressure chamber 112 and the pressure control chamber 113. The valve core is pressed against the diaphragm assembly 300 by the liquid in the pressure control chamber 113.

[0038] When the valve core assembly 200 is in the flushing position, the valve core connects the pressure control chamber 113 to the high-pressure chamber 111 and the low-pressure chamber 112 respectively.

[0039] Specifically, the diaphragm assembly 300 is used to block the top surface 430 of the flow guide 400, thereby dividing the valve chamber 110 into a high-pressure chamber 111, a low-pressure chamber 112 and a pressure control chamber 113. The wastewater valve 10 has a throttling mode and a flushing mode.

[0040] When the wastewater valve 10 is in throttling mode, the valve core assembly 200 is in the filtering position, the solenoid valve is not energized, and wastewater flows into the high-pressure chamber 111 through the inlet channel 120. The diaphragm assembly 300 blocks the top surface 430 of the guide member 400, ensuring that wastewater only passes through the throttling channel 140. Wastewater flows from the inlet channel 120 of the valve body 100 into the high-pressure chamber 111, then through the throttling channel 140 into the low-pressure chamber 112, and finally is discharged through the outlet channel 130.

[0041] When the wastewater valve 10 is in flushing mode, the valve core assembly 200 is in the flushing position, the solenoid valve is energized, and the diaphragm assembly 300 separates from the guide member 400. During flushing, raw water enters the high-pressure chamber 111 from the inlet channel 120 of the valve body 100, and then continues to flow along the throttling channel 140 between the spiral guide members 400 due to the inertia of the water flow. During this process, most of the raw water enters the low-pressure chamber 112 through the gap between the diaphragm assembly 300 and the spiral guide member 400, a small portion of the raw water enters the low-pressure chamber 112 through the outlet of the throttling channel 140, and finally all the raw water is discharged through the outlet channel 130 of the valve body 100. The raw water flowing through the throttling channel 140 can replace the high-concentration wastewater remaining in the throttling channel 140 with low-concentration raw water, significantly reducing the clogging of the solenoid valve caused by scale precipitation, thereby extending the service life of the solenoid valve.

[0042] The wastewater valve 10 with the spiral guide 400 described above does not require additional parts for anti-clogging function, making assembly simple and cost-effective.

[0043] Please see Figures 3 to 5 In one embodiment, the flow guide 400 has opposing inner sidewalls 410 and outer sidewalls 420, which form at least a portion of the throttling channel 140. Specifically, the throttling channel 140 is formed between the inner sidewall 410 and the outer sidewall of the helical flow guide 400.

[0044] Furthermore, the shortest distance between the inner wall 410 and the outer wall 420 forming at least part of the throttling channel 140 ranges from 0.2mm to 1.5mm. It should be noted that the throttling channel 140 has an inlet end 141 and an outlet end 142, with the cross-sectional area of ​​the inlet end 141 being larger than that of the outlet end 142. In the direction of wastewater discharge, the cross-sectional area of ​​the throttling channel 140 gradually decreases, thus increasing the resistance encountered by the wastewater in the wastewater valve 10, thereby reducing the wastewater flow velocity and achieving a throttling effect. Simultaneously, the gradually decreasing cross-sectional area of ​​the throttling channel 140 helps to alleviate pressure drop and reduce noise. The shortest distance between the inner wall 410 and the outer wall 420 refers to the narrowest part of the throttling channel 140, i.e., the width of the outlet end of the throttling channel 140. Within this distance range, the throttling channel 140 can achieve a better throttling effect. The shortest distance range can be, for example, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, or 1.5mm.

[0045] Please see Figures 3 to 5 In one embodiment, the cross-sectional area of ​​the throttling channel 140 gradually decreases from the inlet end 141 to the outlet end 142. During the throttling process, the cross-sectional area of ​​the throttling channel 140 gradually decreases, which helps to alleviate pressure drop and reduce noise.

[0046] Please see Figure 4 and Figure 6 In one embodiment, the throttling channel 140 is provided with a flow-slowing slope 143. In the direction from the bottom of the valve chamber 110 to its opening, the flow-slowing slope 143 extends obliquely from the inlet end 141 to the outlet end 142. This design allows for a significant difference in the cross-sectional area between the inlet end 141 and the outlet end of the throttling channel 140, further improving the throttling effect of the throttling channel 140. It also helps to mitigate pressure drop and reduce noise. The flow-slowing slope 143 can be understood as extending obliquely from the inlet end 141 to the outlet end 142 of the throttling channel 140, so that the cross-sectional area of ​​the throttling channel 140 gradually decreases from the inlet end 141 to the outlet end 142.

[0047] Further, the angle between the surface of the flow-retarding slope 143 and the bottom of the valve cavity 110 ranges from 30° to 70°. Specifically, the angle can be, for example, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, or 70°. Preferably, the angle between the surface of the flow-retarding slope 143 and the bottom of the valve cavity 110 ranges from 50° to 60°.

[0048] Please see Figure 3 and Figure 5 In one embodiment, the flow guide 400 has a top surface 430 that is away from the bottom of the valve chamber 110, and the top surface 430 is parallel to the bottom of the valve chamber 110. Specifically, the top surface 430 of the flow guide 400 is parallel to the bottom of the valve chamber 110 to ensure that the diaphragm assembly 300 can seal the top surface 430 of the flow guide 400, separating the valve chamber 110 into the high-pressure chamber 111, the low-pressure chamber 112, and the pressure control chamber 113 connected to the high-pressure chamber 111; at the same time, it also prevents wastewater from flowing directly from the high-pressure chamber 111 to the low-pressure chamber 112 without flowing through the throttling channel 140 in the throttling mode.

[0049] Please see Figure 4 In one embodiment, the inlet end 141 is positioned close to the outlet end 142 of the inlet channel 120. Specifically, the inlet end 141 of the throttling channel 140 is positioned close to and corresponding to the outlet end of the inlet channel 120 to ensure that after the wastewater flows from the inlet channel 120 into the high-pressure chamber 111, it can directly flow into the throttling channel 140, shortening the flow path of the wastewater in the high-pressure chamber 111. At the same time, due to the inertial impact of the water flow, the inlet end 141 is positioned close to the outlet end 142 of the inlet channel 120, making it easier for the raw water flowing through the throttling channel 140 to replace the high-concentration wastewater remaining in the throttling channel 140 with low-concentration raw water, significantly reducing the clogging of the solenoid valve caused by scale precipitation, thereby extending the service life of the solenoid valve.

[0050] Please see Figure 2 In one embodiment, the wastewater valve 10 further includes a coil assembly 500, which is mounted on the valve body 100 and located on the outer periphery of the valve core assembly 200. When the inductor coil of the coil assembly 500 is energized, it has a driving force to move the valve core assembly 200 between a flushing position and a filtering position.

[0051] Preferably, the wastewater valve 10 further includes a return spring 600, which is disposed within the pressure control chamber 113 and located within the inductor coil. The return spring 600 abuts against one end of the valve core assembly 200. When the inductor coil is energized, it generates an electromagnetic force that drives the valve core assembly 200 to move. When the inductor coil is energized, the valve core assembly 200, under the action of the electromagnetic force generated by the inductor coil, squeezes the return spring 600, thereby causing the diaphragm assembly 300 to separate from the guide member 400, and switching the wastewater valve 10 to the flushing mode.

[0052] When the inductor coil is de-energized, the valve core assembly 200 moves closer to the guide member 400 under the elastic force of the return spring 600, causing the valve core assembly 200 to press against the diaphragm assembly 300. This, in turn, causes the diaphragm assembly 300 to press against the top surface 430 of the guide member 400, switching the wastewater valve 10 to throttling mode. Normally, the wastewater valve 10 is in throttling mode during operation.

[0053] The technical solution of this invention involves providing a spiral-shaped guide member 400 within the valve body 100, forming a throttling channel 140. The high-pressure chamber 111 and the low-pressure chamber 112 are connected through the throttling channel 140, and the cross-sectional area of ​​the throttling channel 140 gradually decreases in the water outlet direction. When the wastewater valve 10 is in flushing mode, the raw water used for flushing enters the high-pressure chamber 111 from the inlet channel 120 of the valve body 100, and then continues to flow along the throttling channel 140 between the spiral-shaped guide members 400 due to the inertia of the water flow. During this process, the raw water flowing through the throttling channel 140 can replace the high-concentration wastewater remaining in the throttling channel 140 with low-concentration raw water, significantly reducing the blockage of the solenoid valve caused by scale precipitation, thereby extending the service life of the solenoid valve.

[0054] This invention also proposes a water purification device, which includes the aforementioned wastewater valve. The specific structure of the wastewater valve is as described in the above embodiments. Since this water purification device adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here. The water purification device can be any one of a water purifier, a drinking water purifier, or a direct drinking water machine.

[0055] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A wastewater valve, used in water purification equipment, characterized in that, The wastewater valve includes: The valve body has an inlet channel and an outlet channel, and a valve cavity is formed inside the valve body; The valve core assembly is movably disposed within the valve body; A diaphragm assembly is disposed within the valve body; and A flow guide is disposed in the valve cavity, defining a high-pressure chamber and a low-pressure chamber within the valve cavity. The high-pressure chamber is connected to the inlet channel, and the low-pressure chamber is connected to the outlet channel. The flow guide is spirally shaped and forms a throttling channel, which connects the high-pressure chamber and the low-pressure chamber. The throttling channel has an inlet end and an outlet end, with the cross-sectional area of ​​the inlet end being larger than that of the outlet end. The flow guide has opposing inner and outer sidewalls, and the throttling channel is formed between the inner and outer sidewalls of the spiral-shaped flow guide. The throttling channel is provided with a flow-slowing slope, which extends obliquely from the inlet end to the outlet end in the direction from the bottom of the valve cavity to the opening of the valve cavity.

2. The wastewater valve as described in claim 1, characterized in that, The shortest distance between the inner wall and the outer wall forming at least part of the throttling channel ranges from 0.2 mm to 1.5 mm.

3. The wastewater valve as described in claim 1, characterized in that, The cross-sectional area of ​​the throttling channel gradually decreases from the inlet end to the outlet end.

4. The wastewater valve as described in claim 1, characterized in that, The angle between the surface of the slow-flow slope and the bottom of the valve cavity ranges from 30° to 70°.

5. The wastewater valve as described in any one of claims 1 to 4, characterized in that, The flow guide has a top surface that is away from the bottom of the valve cavity, and the top surface is parallel to the bottom of the valve cavity.

6. The wastewater valve as described in any one of claims 1 to 4, characterized in that, The inlet end is located near the outlet end of the water inlet channel.

7. The wastewater valve as described in any one of claims 1 to 4, characterized in that, The wastewater valve also includes a valve core assembly, which is movably disposed within the valve body between a filtration position and a flushing position.

8. A water purification device, characterized in that, Includes the wastewater valve as described in any one of claims 1 to 7.

Images