Water treatment filtering equipment

Abstract

The utility model relates to water treatment filtering equipment which comprises a valve body and a movable valve plate, a water inlet, a water outlet and a sewage draining exit are formed in the side wall of the valve body, and the valve body is provided with a valve outer cavity, a valve inner cavity, a first filter element connector and a second filter element connector which are coaxially arranged; an annular sealing ring is embedded in the end, close to the valve outer cavity, of the water outlet, the valve inner cavity comprises a center sewage discharging cavity, blind cavities, a first water passing cavity and a second water passing cavity, the blind cavities are arranged in the circumferential direction of the center sewage discharging cavity, the corresponding central angles of the blind cavities are all 120 degrees, and the horizontal section area of the first water passing cavity is equal to that of the second water passing cavity. The movable valve block is provided with a center blind groove, a water inlet through hole, a water outlet conduction blind groove and a sewage discharge conduction blind groove, the water inlet through hole, the water outlet conduction blind groove and the sewage discharge conduction blind groove are arranged along the circumference of the center blind groove, the horizontal section area of the water inlet through hole is the same as that of the first water passing cavity, and the movable valve block is provided with a water outlet communication port communicated with the water outlet conduction blind groove. According to the utility model, equivalent and efficient distribution of effective water passing areas of the water inlet part, the water outlet part and the pollution discharge part can be realized, and the use cost is lower.

Description

Technical Field

[0001] This utility model belongs to the field of water treatment technology, specifically relating to a water treatment filtration device. Background Technology

[0002] Current water treatment filtration equipment often adopts the form of a planar control valve, which is installed after the corresponding treatment tank during use. It mainly includes a valve body, a moving valve plate, and a drive device. The drive device drives the moving valve plate to rotate to switch the flow channels, thereby realizing the functions of filtration, backwashing, and forward washing of the filtration system.

[0003] The existing water treatment filtration equipment structures are shown in Chinese Patent No. CN218031518U (authorization announcement number) and Chinese Patent No. CN114517842A (application publication number). Although both of these multi-functional water treatment filter valves are based on a three-part valve body structure, either the effective utilization area ratio of the inlet, outlet, and drain sections is too low, or the effective utilization area ratio of the inlet and outlet sections is high while the effective utilization area ratio of the drain section is low. These structures cannot achieve efficient allocation and cannot maximize the utilization area of ​​the inlet, outlet, and drain sections. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a water treatment filtration device to solve the technical problem that existing water treatment filtration devices cannot efficiently allocate the effective usable area of ​​the inlet, outlet and sewage discharge sections.

[0005] To solve the above problems, the water treatment filtration equipment provided by this utility model adopts the following technical solution:

[0006] Water treatment filtration equipment includes a valve body and a rotating valve plate mounted in the valve body. The valve body has an inlet, an outlet and a drain outlet on its side wall. The valve body has a valve outer cavity, a valve inner cavity, a first filter element interface and a second filter element interface arranged coaxially. The first filter element interface is used to communicate with the filter tank and the second filter element interface is used to communicate with the central pipe.

[0007] An annular sealing ring is embedded at one end of the outlet near the outer cavity of the valve. The annular sealing ring is used to make frictional contact with the outer peripheral side wall of the moving valve plate.

[0008] The valve cavity includes a central drain cavity and blind cavities with corresponding central angles of 120° arranged along the circumference of the central drain cavity, a first water passage cavity and a second water passage cavity. The horizontal cross-sectional areas of the first water passage cavity and the second water passage cavity are equal. The first water passage cavity is connected to the first filter element interface, the second water passage cavity is connected to the second filter element interface, and the central drain cavity is connected to the drain outlet.

[0009] The moving valve plate has a central blind groove at its center. The horizontal cross-sectional area of ​​the part of the moving valve plate outside the central blind groove is divided into three equal parts, which are arranged along the circumference of the central blind groove: an inlet through hole, an outlet guide blind groove, and a sewage guide blind groove. The horizontal cross-sectional area of ​​the inlet through hole is the same as the horizontal cross-sectional area of ​​the first water passage cavity. The sewage guide blind groove is connected to the central blind groove. An outlet connection port that communicates with the outlet guide blind groove is opened on the outer peripheral side wall of the moving valve plate.

[0010] Furthermore, the moving valve plate is an integral structure, including an integrally formed valve plate blind plate and a tubular outer shell, a first partition plate, and a second partition plate located below the valve plate blind plate. The first partition plate is an arc-shaped plate with an opening on one side, arranged coaxially with the tubular outer shell, and the central angle corresponding to the opening of the first partition plate is 120°. The second partition plate is disposed between the first partition plate and the tubular outer shell, and three second partition plates are evenly distributed around the circumference of the first partition plate, wherein two adjacent second partition plates are connected at the opening of the first partition plate. The valve plate blind plate is an arc-shaped plate with a central angle of 240°. The water outlet is disposed on the tubular outer shell.

[0011] Furthermore, the tubular outer shell is also provided with a water inlet, which is connected to the water inlet hole.

[0012] Furthermore, there are two water inlet ports, and the distance between the two water inlet ports is greater than the opening width of the water outlet.

[0013] Preferably, the two water inlet ports extend to the end faces of the two second partitions in the circumferential direction of the tubular outer shell.

[0014] Furthermore, a fixed valve plate is snapped onto the upper end face of the valve cavity. The fixed valve plate rotates and seals with the moving valve plate. The fixed valve plate is provided with a central hole, a first water passage hole, a second water passage hole, and a third water passage hole that correspond one-to-one with the central sewage cavity, the first water passage cavity, the second water passage cavity, and the blind cavity. The horizontal cross-sectional areas of the first water passage hole, the second water passage hole, and the third water passage hole are the same and are all equal to the horizontal cross-sectional area of ​​the first water passage cavity.

[0015] Furthermore, the inlet and outlet are arranged symmetrically about the axis of the valve cavity, and the drain outlet is located below the middle position of the line connecting the inlet and outlet.

[0016] Furthermore, the valve body is formed by injection molding.

[0017] The beneficial effects of this utility model are:

[0018] 1. This utility model, by setting an annular sealing ring at the outlet of the valve body and opening an outlet connection port on the moving valve plate, perfectly utilizes the ability of the moving valve plate itself to connect the outlet connection port and the outlet during rotation, as well as the ability of the moving valve plate itself to block the outlet during rotation, thus avoiding the need for a corresponding electric valve at the outlet and reducing operating costs. On the other hand, it perfectly utilizes the outlet connection port on the moving valve plate, allowing the outlet connection port to serve as the inlet port during forward washing. In this way, during forward washing and filtration, raw water enters the treatment tank from the first water passage chamber. During backwashing, raw water enters the central pipe from the second water passage chamber. The horizontal cross-sectional areas of the first and second water passage chambers are the same, which achieves an equal distribution of the effective area for sewage discharge, the effective area for inlet, and the effective area for outlet. That is, the water volume in the inlet, outlet, and sewage discharge sections is also the same, achieving a maximum and reasonable distribution of water flow.

[0019] 2. Compared with existing water treatment filtration devices, the present invention has the same inlet water volume, outlet water volume and sewage discharge volume, achieving efficient distribution. Under the condition of achieving the same filtration capacity, the present invention has a smaller size and lower manufacturing cost.

[0020] 3. This utility model can achieve the functions of filtration, backwashing and forward washing in the valve body cavity through only two water-passing chambers. Compared with the existing water treatment filtration devices that must be equipped with three water-passing chambers in the valve body cavity, the structure of this utility model is simpler and the concept is more ingenious. Attached Figure Description

[0021] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0022] Figure 1 This is a three-dimensional structural diagram of the water treatment filtration device of this utility model. Figure 1 ;

[0023] Figure 2 This is a three-dimensional structural diagram of the water treatment filtration device of this utility model. Figure 2 (Display driver);

[0024] Figure 3 This is a top view of the valve body in the water treatment filtration device of this utility model;

[0025] Figure 4 This is a bottom view of the valve body in the water treatment filtration device of this utility model;

[0026] Figure 5 This is a cross-sectional view of the valve body in the water treatment filtration device of this utility model. Figure 1 ;

[0027] Figure 6 This is a cross-sectional view of the valve body in the water treatment filtration device of this utility model. Figure 2 ;

[0028] Figure 7 A schematic diagram showing the valve plate fixed to the valve body;

[0029] Figure 8 This is a schematic diagram of the structure of the fixed valve plate in the water treatment filtration equipment of this utility model;

[0030] Figure 9 This is a three-dimensional structural diagram of the moving valve plate in the water treatment filtration equipment of this utility model;

[0031] Figure 10 This is a bottom view of the moving valve plate;

[0032] Figure 11 This is a cross-sectional view of the moving valve plate;

[0033] Figure 12 This is a schematic diagram of the water treatment filtration device of this utility model in the filtration state.

[0034] Figure 13 for Figure 12 A sectional view;

[0035] Figure 14 This is a schematic diagram of the water treatment filtration device of this utility model in the backwashing state.

[0036] Figure 15 for Figure 14 A sectional view;

[0037] Figure 16 This is a schematic diagram of the water treatment filtration device of this utility model in the forward washing state;

[0038] Figure 17 for Figure 16 A sectional view.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Valve body; 2. Moving valve plate; 3. Fixed valve plate; 4. Inlet; 5. Outlet; 6. Drain outlet; 7. First filter element interface; 8. Second filter element interface; 9. Blind cavity; 10. Central drain cavity; 11. First water passage cavity; 12. Second water passage cavity; 13. First water passage hole; 14. Second water passage hole; 15. Third water passage hole; 16. Tubular outer shell; 17. Valve plate blind plate; 18. First partition plate; 19. Second partition plate; 2 0. Central blind groove; 21. Sewage discharge blind groove; 22. Water outlet blind groove; 23. Water inlet hole; 24. Water inlet connection port; 25. Water outlet connection port; 26. Drive device; 27. Display screen; 28. Intermediate ring plate; 29. ​​Drain pipe; 30. Valve body partition plate; 31. Valve outer cavity; 32. Annular sealing ring; 33. Outer ring beam; 34. Inner ring beam; 35. Valve plate partition beam; 36. Central hole; 37. Flexible mounting component. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0042] The principles and spirit of this utility model will be explained in detail below with reference to several representative embodiments.

[0043] Example 1 of the water treatment filtration device provided by this utility model:

[0044] like Figure 1 and Figure 2 As shown, the water treatment filtration equipment includes a valve body 1, a fixed valve plate 3 fixed inside the valve body 1, a movable valve plate 2 that rotates and seals with the fixed valve plate 3, a display screen 27 mounted on the valve body 1, and a drive device 26 mounted on the valve body 1. The drive device 26 is existing technology and is used to drive the movable valve plate 2 to rotate. It mainly consists of a motor, transmission gears, and a transmission rod; its structure will not be described in detail here.

[0045] Valve body 1 is molded by injection molding, such as Figure 3 and Figure 4 As shown, the valve body 1 has an outer valve cavity 31 and an inner valve cavity arranged coaxially. The bottom of the valve body 1 is also provided with a first filter element interface 7 and a second filter element interface 8 arranged coaxially with the inner valve cavity. The first filter element interface 7 is located radially outside the second filter element interface 8. The first filter element interface 7 is used to communicate with the filter tank, and the second filter element interface 8 is used to communicate with the central tube.

[0046] The valve body 1 has an inlet 4, an outlet 5, and a drain 6 on its side wall. The inlet 4 and outlet 5 are arranged symmetrically about the axis of the valve cavity. The drain 6 is located below the midpoint of the line connecting the inlet 4 and outlet 5. Figure 5 As shown, both the inlet 4 and the outlet 5 are connected to the valve outer cavity 31. An elastic mounting member 37 is embedded at the end of the outlet 5 near the valve outer cavity 31. A water flow hole for water supply is fixed on the elastic mounting member 37. An annular sealing ring 32 is embedded at the end of the elastic mounting member 37. The annular sealing ring 32 is partially located in the valve outer cavity 31 and is used for frictional contact with the outer peripheral wall of the moving valve plate 2. After prolonged use, the annular sealing ring 32 can be disassembled and replaced.

[0047] like Figure 3 and Figure 6 As shown, a columnar intermediate ring plate 28 is provided inside the valve body 1. The space inside the intermediate ring plate 28 forms the valve inner cavity, and the space between the intermediate ring plate 28 and the inner wall of the valve body 1 forms the aforementioned valve outer cavity 31. A drain pipe 29 is coaxially provided at the center of the intermediate ring plate 28, and the space inside the drain pipe 29 forms the central sewage discharge chamber 10. Three valve body partition plates 30 are provided between the intermediate ring plate 28 and the drain pipe 29, and are equally spaced along the circumference of the drain pipe 29. The three valve body partition plates 30 divide the space between the intermediate ring plate 28 and the drain pipe 29 into a blind cavity 9, a first water passage chamber 11, and a second water passage chamber 12, each with a corresponding central angle of 120°. The horizontal cross-sectional area of ​​the first water passage chamber 11 and the second water passage chamber 12 are equal. The pipe at the sewage outlet 6 passes through the blind cavity 9 and connects to the central sewage discharge chamber 10. The first water passage chamber 11 connects to the first filter element interface 7, and the second water passage chamber 12 connects to the second filter element interface 8.

[0048] The valve plate 3 is a one-piece structure, such as Figure 8 As shown, the system includes an outer ring beam 33 and an inner ring beam 34 arranged coaxially, and three valve plate partition beams 35 equally spaced along the circumference of the inner ring beam 34, connecting the outer ring beam 33 and the inner ring beam 34. The inner hole of the inner ring beam 34 forms the central hole 36 of the fixed valve plate 3. The three valve plate partition beams 35 divide the space between the inner ring beam 34 and the outer ring beam 35 into a first water passage hole 13, a second water passage hole 14, and a third water passage hole 15, each with a corresponding central angle of 120° and an equal horizontal cross-sectional area. The horizontal cross-sectional area of ​​the first water passage hole 13 is the same as the horizontal cross-sectional area of ​​the first water passage cavity 11. During installation, as follows... Figure 7As shown, the inner ring beam 34 of the fixed valve plate 3 is sleeved and fixed outside the drain pipe 29, the valve plate partition beam 35 is placed on the upper end of the corresponding valve body partition 30, and the outer ring beam 33 is placed on the middle ring plate 28, thereby realizing the fixation of the fixed valve plate 3 in the valve body 1. At this time, the central hole 36 corresponds to and is connected to the central sewage chamber 10, the first water passage hole 13 corresponds to and is connected to the first water passage chamber 11, the second water passage hole 14 corresponds to and is connected to the second water passage chamber 12, and the third water passage hole 15 corresponds to and is connected to the blind cavity 9.

[0049] The movable valve plate 2 is positioned above the fixed valve plate 3, and is in frictional contact with the fixed valve plate 3, with a sealed fit between them. The fixed valve plate 3 provides lubrication, reducing wear on the movable valve plate 2 during rotation.

[0050] The moving valve plate 2 is an integral structure, such as Figure 9 , Figure 10 and Figure 11 As shown, the device includes a valve plate blind plate 17 and a tubular outer shell 16 integrally formed with and located below the valve plate blind plate 17, a first partition plate 18, and a second partition plate 19. The first partition plate 18 is an arc-shaped plate with an opening on one side and is arranged coaxially with the tubular outer shell 16. The central angle corresponding to the opening of the first partition plate 18 is 120°. The second partition plate 19 is disposed between the first partition plate 18 and the tubular outer shell 16. Three second partition plates 19 are evenly distributed around the circumference of the first partition plate 18, and two adjacent second partition plates 19 are connected at the opening of the first partition plate 18. The valve plate blind plate 17 is an arc-shaped plate with a central angle of 240°, which blocks two-thirds of the space inside the tubular outer shell 16. This causes a central blind groove 20 to be formed inside the moving valve plate 2, along with inlet holes 23, outlet guide blind grooves 22, and drain guide blind grooves 21, each with a central angle of 120°, arranged along the circumference of the central blind groove 20. The drain guide blind groove 21 is connected to the central blind groove 20. The horizontal cross-sectional areas of the inlet holes 23, outlet guide blind grooves 22, and drain guide blind grooves 21 are all the same and equal to the horizontal cross-sectional areas of the first water passage chamber 11 and the second water passage chamber 12.

[0051] like Figure 9 and Figure 11 As shown, the tubular outer shell 16 is provided with two water inlet ports 24 and one water outlet port 25. The two water inlet ports 24 extend circumferentially from the tubular outer shell 16 to the end faces of the two second partition plates 19, respectively. Both water inlet ports 24 are connected to the water inlet through-hole 23, and the water outlet port 25 is connected to the water outlet guide blind groove 22. The two water inlet ports 24 can increase the water inlet speed. The distance between the two water inlet ports 24 should be greater than the opening width of the water outlet 5, so that during backwashing, the portion of the tubular outer shell 16 between the two water inlet ports 24 can effectively block the water outlet 5.

[0052] The drive unit 26 drives the movable valve plate 2 to rotate counterclockwise, which enables the valve body 1 to perform filtration, backwashing, and forward washing functions. The various working states of the valve body 1 are as follows:

[0053] like Figure 12 and Figure 13 As shown, valve body 1 is in the filtration state. At this time, the inlet hole 23 corresponds vertically to the first water passage chamber 11, the outlet guide blind groove 22 corresponds vertically to the second water passage chamber 12, the sewage guide blind groove 21 corresponds vertically to the blind chamber 9, and the outlet connection port 25 is connected to the outlet 5. The flow path of the raw water is as follows: inlet 4 → valve outer cavity → inlet connection port 24 and inlet hole 23 → first water passage hole 13 → first water passage chamber 11 → first filter element interface 7 → filter tank → central pipe → second filter element interface 8 → second water passage chamber 12 → second water passage hole 14 → outlet guide blind groove 22 → outlet connection port 25 → outlet 5.

[0054] After the drive device 26 drives the valve plate 2 to rotate 120° counterclockwise compared to its position in the filtration state, the valve body enters the backwash state, such as... Figure 14 and Figure 15 As shown. At this time, the inlet hole 23 corresponds vertically to the second water passage chamber 12, the drain guide blind groove 21 corresponds vertically to the first water passage chamber 11, the outlet guide blind groove 22 corresponds vertically to the blind cavity 9, and the part of the tubular outer shell 16 located between the two inlet ports 24 blocks the outlet 5, and the outlet port 25 connects to the blind cavity 9. By rotating the moving valve plate 2 itself, the water flow path between the outlet 5 and the second water passage chamber 12 can be isolated and connected, eliminating the need for an external electric valve at the outlet 5 and reducing the operating cost. In the backwash state, the flow path of the raw water is as follows: inlet 4 → valve outer cavity → inlet port 24 and inlet hole 23 → second water passage hole 14 → second filter element interface 8 → central pipe → filter tank → first filter element interface 7 → first water passage chamber 11 → first water passage hole 13 → drain guide blind groove 21 → central hole 36 → central drain chamber 10 → drain port 6.

[0055] After the drive device 26 drives the valve plate 2 to rotate 240° counterclockwise compared to its position in the filtration state, the valve body enters the forward rinsing state, such as... Figure 16 and Figure 17As shown. At this time, the inlet hole 23 corresponds vertically to the blind cavity 9, the drain guide blind groove 21 corresponds vertically to the second water passage cavity 12, the outlet guide blind groove 22 corresponds vertically to the first water passage cavity 11, and the tubular outer shell 16 corresponding to the drain guide blind groove 21 blocks the outlet 5, and the outlet connection port 25 connects to the first water passage cavity 11. In the forward washing state, the flow path of the raw water is: inlet 4 → valve outer cavity → outlet connection port 25 → first water passage hole 13 → first water passage cavity 11 → first filter element interface 7 → filter tank → central pipe → second filter element interface 8 → second water passage cavity 12 → second water passage hole 14 → drain guide blind groove 21 → central hole 36 → central drain cavity 10 → drain port 6.

[0056] Under its specific operating conditions, the water treatment filtration equipment of this utility model can divide the effective water flow area of ​​the valve cavity into three equal parts, so that the water flow rate of the inlet, outlet and sewage discharge parts is the same. This is a function that previous water treatment filtration equipment of the same type did not have and could not achieve.

[0057] Example 2 of the water treatment filtration device provided by this utility model:

[0058] The main difference between this embodiment and Embodiment 1 is that in Embodiment 1, a fixed valve plate is provided in the valve body to lubricate the moving valve plate. In this embodiment, the moving valve plate is in direct sealing contact with the end face of the valve cavity, and no fixed valve plate is provided. In this case, in order to reduce the wear of the moving valve plate, a corresponding lubricant can be applied between the moving valve plate and the end face of the valve cavity, or the end face of the valve cavity can be made smoother.

[0059] Example 3 of the water treatment filtration equipment provided by this utility model:

[0060] The main difference between this embodiment and Embodiment 1 is that in Embodiment 1, a water inlet port is provided on the moving valve plate. In this embodiment, no water inlet port is provided on the moving valve plate; only a water inlet through hole is provided. Of course, in other embodiments, when a water inlet port is provided, only one water inlet port may be provided. Also, in other embodiments, the water inlet port may be a complete opening, meaning that one side of the water inlet port does not extend to the corresponding second partition.

[0061] Example 4 of the water treatment filtration device provided by this utility model:

[0062] The main difference between this embodiment and Embodiment 1 is that in Embodiment 1, the inlet and outlet are arranged symmetrically about the axis of the valve cavity, and the axis of the inlet coincides with the axis of the outlet. In this embodiment, the inlet and outlet are arranged asymmetrically, and the axis of the inlet and the axis of the outlet form a set angle.

[0063] The embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A water treatment filtration device, comprising a valve body and a movable valve plate rotatably mounted within the valve body, wherein the valve body has an inlet, an outlet, and a drain outlet on its side wall; the valve body has a coaxially arranged external valve cavity, an internal valve cavity, a first filter element interface, and a second filter element interface, wherein the first filter element interface is used to communicate with a filter tank, and the second filter element interface is used to communicate with a central pipe, characterized in that: An annular sealing ring is embedded at one end of the outlet near the outer cavity of the valve. The annular sealing ring is used to make frictional contact with the outer peripheral side wall of the moving valve plate. The valve cavity includes a central drain cavity and blind cavities with corresponding central angles of 120° arranged along the circumference of the central drain cavity, a first water passage cavity and a second water passage cavity. The horizontal cross-sectional areas of the first water passage cavity and the second water passage cavity are equal. The first water passage cavity is connected to the first filter element interface, the second water passage cavity is connected to the second filter element interface, and the central drain cavity is connected to the drain outlet. The moving valve plate has a central blind groove at its center. The horizontal cross-sectional area of ​​the part of the moving valve plate outside the central blind groove is divided into three equal parts, which are arranged along the circumference of the central blind groove: an inlet through hole, an outlet guide blind groove, and a sewage guide blind groove. The horizontal cross-sectional area of ​​the inlet through hole is the same as the horizontal cross-sectional area of ​​the first water passage cavity. The sewage guide blind groove is connected to the central blind groove. An outlet connection port that communicates with the outlet guide blind groove is opened on the outer peripheral side wall of the moving valve plate.

2. The water treatment filtration equipment according to claim 1, characterized in that, The moving valve plate is an integral structure, including an integrally formed valve plate blind plate and a tubular outer shell, a first partition plate, and a second partition plate located below the valve plate blind plate. The first partition plate is an arc-shaped plate with an opening on one side, arranged coaxially with the tubular outer shell, and the central angle corresponding to the opening of the first partition plate is 120°. The second partition plate is located between the first partition plate and the tubular outer shell, and three second partition plates are evenly distributed around the circumference of the first partition plate, of which two adjacent second partition plates are connected to the opening of the first partition plate. The valve plate blind plate is an arc-shaped plate with a central angle of 240°. The water outlet is located on the tubular outer shell.

3. The water treatment filtration equipment according to claim 2, characterized in that, The tubular outer shell is also provided with a water inlet, which is connected to the water inlet hole.

4. The water treatment filtration equipment according to claim 3, characterized in that, There are two water inlet ports, and the distance between the two water inlet ports is greater than the opening width of the water outlet.

5. The water treatment filtration device according to claim 4, characterized in that, Two water inlet ports extend circumferentially from the tubular outer shell to the end faces of the two second partitions.

6. The water treatment filtration device according to any one of claims 1-5, characterized in that, A fixed valve plate is snapped onto the upper end face of the valve cavity. The fixed valve plate rotates and seals with the moving valve plate. The fixed valve plate is provided with a central hole, a first water passage hole, a second water passage hole, and a third water passage hole that correspond one-to-one with the central sewage cavity, the first water passage cavity, the second water passage cavity, and the blind cavity. The horizontal cross-sectional areas of the first water passage hole, the second water passage hole, and the third water passage hole are the same and are all equal to the horizontal cross-sectional area of ​​the first water passage cavity.

7. The water treatment filtration device according to any one of claims 1-5, characterized in that, The inlet and outlet are arranged symmetrically about the axis of the valve cavity, and the drain outlet is located below the middle position of the line connecting the inlet and outlet.

8. The water treatment filtration device according to any one of claims 1-5, characterized in that, The valve body is formed by injection molding.

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