Multifunctional filter valve for water treatment

Abstract

The application belongs to the technical field of water treatment equipment, and particularly relates to a multifunctional filtering valve for water treatment, which comprises a valve body and a movable valve sheet. The valve body is provided with a water inlet, a water outlet, a sewage outlet, a first filter core interface and a second filter core interface. The valve body has an outer valve cavity and an inner valve cavity. The inner valve cavity comprises a central sewage chamber and a plurality of chambers with equal central angles arranged along the circumference of the central sewage chamber, i.e. a forward washing chamber, a working chamber, a backwashing chamber and a blind chamber. A valve body separation beam is arranged in the backwashing chamber to separate the backwashing chamber into first and second water outlets with the same central angle. A central groove and a plurality of water inlet through holes with equal central angles arranged along the circumference of the central groove are arranged on the movable valve sheet. The movable valve sheet further comprises a first groove, a second groove and a third groove. A movable valve sheet separation beam is arranged in the second groove to separate the second groove into a sewage blind groove and a third blind groove with the same central angle. A movable valve sheet blind plate is arranged in the water inlet through hole to shield the second water outlet chamber. The application provides a filtering valve with a brand-new four-part structure. In the design of the same effective area of the valve body, a more excellent forward and backwashing effect is achieved.

Description

Technical Field

[0001] This invention belongs to the technical field of water treatment equipment, and particularly relates to a multifunctional filter valve for water treatment. Background Technology

[0002] In recent years, with the increasing application of control valves with planar sealing structures in the water treatment field, the market has recognized the structure of planar valves. Modern industrial and domestic water treatment systems mostly use control valve bodies to switch flow paths. Control valves in filtration systems need to perform functions such as filtration, backwashing, and forward washing. The non-filtration processes such as backwashing and forward washing in a filtration system are collectively referred to as the cleaning process. Existing water treatment filter valves mainly change the direction of water flow to achieve operation, backwashing, and forward washing functions, or simply operation and backwashing functions. Filter valves are generally used in industrial water treatment equipment such as carbon filters and sand filters, and are widely used in domestic water treatment equipment to remove impurities, residual chlorine, heavy metals, etc., improving the quality of people's water.

[0003] Chinese invention patent application CN114517842A discloses a multifunctional filter valve for water treatment, which includes a valve body and a moving valve plate. The moving valve plate is divided into three equal parts in the circumferential direction and has a water passage hole, a first groove and a second groove in the circumferential direction. The moving valve plate has a third groove at the center position. The first groove is divided into three mutually separated blind grooves, a first blind groove and a second blind groove, which are arranged on the same central axis. The third blind groove is used to discharge sewage after forward washing and backwashing. However, with the addition of the first and second partition beams, the area of ​​the third blind groove accounts for a small proportion of the effective area of ​​the entire valve body. Summary of the Invention

[0004] Therefore, the purpose of this invention is to provide a novel multifunctional water treatment filter valve with a new structure, which, compared with the valve core of similar filter valves in the same effective area size, can achieve a larger sewage discharge area ratio and improve the cleaning effect.

[0005] To solve the above problems, the water treatment multifunctional filter valve provided by the present invention adopts the following technical solution:

[0006] A multi-functional water treatment filter valve includes a valve body and a movable valve plate installed in the valve body. The side wall of the valve body is provided with an inlet, an outlet and a drain outlet. The bottom of the valve body is provided with a first filter element interface for communicating with the filter tank and a second filter element interface for communicating with the central pipe.

[0007] The valve body has an outer valve cavity and an inner valve cavity arranged coaxially. The inner valve cavity includes a central drain chamber. The area of ​​the inner valve cavity outside the central drain chamber is divided into four equal parts by a circumference angle. The inner valve cavity has a forward washing chamber, a working chamber, a backwash chamber, and a blind chamber with equal central angles around the circumference of the central drain chamber. The backwash chamber is provided with a valve body partition beam to divide the backwash chamber into a first water outlet chamber and a second water outlet chamber with the same central angle. The forward washing chamber and the working chamber are both connected to the first filter element interface. The first water outlet chamber is connected to the second filter element interface. The second water outlet chamber is connected to the water outlet. The central drain chamber is connected to the drain outlet.

[0008] The movable valve plate is provided with a central groove. The area of ​​the movable valve plate outside the central groove is divided into four equal parts at a circumferential angle. It includes a water inlet hole, a first groove, a second groove, and a third groove arranged along the circumferential direction of the central groove and each occupying one part. The first groove and the second groove are each provided with a movable valve plate partition beam arranged with the same central axis to divide the first groove into a first blind groove and a second blind groove with the same central angle, and to divide the second groove into a sewage blind groove and a third blind groove with the same central angle. The sewage blind groove communicates with the central groove. The water inlet hole is provided with a movable valve plate blind plate that can cover the second water outlet chamber.

[0009] Furthermore, the forward washing chamber and the reverse washing chamber are located on both sides of the working chamber and are adjacent to the working chamber; the water inlet is opposite to the sewage blind trough, and the pipe at the sewage outlet passes through the blind chamber and connects to the central sewage chamber.

[0010] In another embodiment, the working chamber and the forward washing chamber are located on both sides of the backwash chamber and are adjacent to the backwash chamber; the water inlet is arranged adjacent to the sewage blind trough, and the pipe at the sewage outlet passes through the forward washing chamber and is connected to the central sewage discharge chamber.

[0011] Furthermore, the valve body is also provided with a fixed valve plate, and the moving valve plate is rotatably sealed with the fixed valve plate. The fixed valve plate has a central through hole, and the area of ​​the fixed valve plate outside the central through hole is divided into four equal parts at an angle, including a first water passage hole, a second water passage hole, a third water passage hole, and a fourth water passage hole arranged along the circumference of the central through hole, each occupying an equal proportion. The third water passage hole is provided with a fixed valve plate partition beam to divide the third water passage hole into a first water outlet through hole and a second water outlet through hole with the same central angle. The first water outlet through hole corresponds vertically to and communicates with the first water outlet chamber, the second water outlet through hole corresponds vertically to and communicates with the second water outlet chamber, the first water passage hole corresponds vertically to and communicates with the front washing chamber, the second water passage hole corresponds vertically to and communicates with the working chamber, and the fourth water passage hole corresponds vertically to the blind chamber.

[0012] Furthermore, the fourth water passage is provided with a fixed valve plate blind plate, which corresponds vertically to the sewage blind channel when the valve body is in the working state, so as to block the sewage blind channel.

[0013] Furthermore, the tops of the forward washing chamber, working chamber, backwash chamber, and blind chamber are flush, the top of the central drain chamber protrudes upwards outside the working chamber, and the central through hole is fitted outside the central drain chamber.

[0014] Furthermore, the valve body is a one-piece molded structure.

[0015] The beneficial effects of the multifunctional water treatment filter valve of the present invention are:

[0016] This invention provides a novel multi-functional water treatment filter valve with optimized and innovative valve body and moving valve plate. While achieving normal filtration, backwashing, and forward washing functions, the valve body and moving valve plate are divided into four equal sections. The new four-compartment structure and improved drainage design result in a larger drainage blind channel area and a greater wastewater discharge flow rate. This allows for a larger volume of water entering the filter tank within the same time frame, making it easier to clean the filter media and achieving superior forward and backwashing effects. Furthermore, the four-compartment flow channel design of this multi-functional water treatment filter valve allows for a more reasonable balance between inlet / outlet water flow and wastewater discharge. Attached Figure Description

[0017] The above and other objects, features, and advantages of exemplary embodiments of the present invention will become readily apparent upon reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of the invention are illustrated by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0018] Figure 1 This is a three-dimensional structural schematic diagram of a first embodiment of the multifunctional water treatment filter valve of the present invention;

[0019] Figure 2 for Figure 1 A three-dimensional structural diagram of the middle valve body;

[0020] Figure 3 for Figure 2 A bottom view;

[0021] Figure 4 This is a schematic diagram of the fixed valve plate of the multi-functional water treatment filter valve in Example 1;

[0022] Figure 5 This is a schematic diagram of the fixed valve plate of the water treatment multi-functional filter valve in Example 1 being installed on the valve body;

[0023] Figure 6 This is a schematic diagram of the moving valve plate of the multi-functional water treatment filter valve in Example 1 from one perspective.

[0024] Figure 7This is a schematic diagram of the moving valve plate of the multi-functional water treatment filter valve in Example 1 from another perspective.

[0025] Figure 8 This is a plan view showing the relative positional relationship between the moving valve plate and the valve body when the multi-functional water treatment filter valve in the first embodiment is in the filtration state;

[0026] Figure 9 This is a cross-sectional schematic diagram showing the relative positional relationship between the moving valve plate and the valve body when the multi-functional water treatment filter valve in the first embodiment is in the filtration state.

[0027] Figure 10 This is a plan view showing the relative positional relationship between the moving valve plate and the valve body when the multi-functional water treatment filter valve in Example 1 is in the backwashing state;

[0028] Figure 11 This is a cross-sectional schematic diagram showing the relative positional relationship between the moving valve plate and the valve body when the water treatment multifunctional filter valve is in the backwashing state in Example 1.

[0029] Figure 12 This is a plan view showing the relative positional relationship between the moving valve plate and the valve body when the multi-functional water treatment filter valve in Example 1 is in the positive washing state;

[0030] Figure 13 This is a cross-sectional schematic diagram showing the relative positional relationship between the moving valve plate and the valve body when the multi-functional water treatment filter valve in Example 1 is in the positive washing state;

[0031] Figure 14 This is a schematic diagram of the valve body structure of the multi-functional water treatment filter valve in Example 2;

[0032] Figure 15 This is a schematic diagram of the fixed valve plate of the multi-functional water treatment filter valve in Example 2;

[0033] Figure 16 This is a schematic diagram of the moving valve plate of the multi-functional water treatment filter valve in Example 2;

[0034] Figure 17 This is a plan view showing the relative positional relationship between the moving valve plate and the valve body when the water treatment multifunctional filter valve is in the filtration state in Example 2;

[0035] Figure 18 This is a cross-sectional schematic diagram showing the relative positional relationship between the moving valve plate and the valve body when the multi-functional water treatment filter valve in Example 2 is in the filtration state.

[0036] Figure 19 This is a plan view showing the relative positional relationship between the moving valve plate and the valve body when the water treatment multifunctional filter valve is in the backwashing state in Example 2;

[0037] Figure 20This is a cross-sectional schematic diagram showing the relative positional relationship between the moving valve plate and the valve body when the water treatment multifunctional filter valve is in the backwashing state in Example 2;

[0038] Figure 21 This is a plan view showing the relative positional relationship between the moving valve plate and the valve body when the water treatment multifunctional filter valve is in the positive washing state in Example 2;

[0039] Figure 22 This is a cross-sectional schematic diagram showing the relative positional relationship between the moving valve plate and the valve body when the water treatment multifunctional filter valve is in the positive washing state in Example 2.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Valve body; 2. Moving valve plate; 3. Fixed valve plate; 4. Drive unit; 5. Inlet; 6. Outlet; 7. Drain outlet; 8. Outer valve cavity; 9. Central drain chamber; 10. Positive wash chamber; 11. Working chamber; 12. First outlet chamber; 13. Second outlet chamber; 14. Blind chamber; 15. Valve body partition beam; 16. First filter element interface; 17. Second filter element interface; 18. Central groove; 19. 20. Inlet through hole; 21. Blind plate of moving valve plate; 22. Separating beam of moving valve plate; 23. First blind groove; 24. Second blind groove; 25. Drain blind groove; 26. Third blind groove; 27. Central through hole; 28. First water passage hole; 29. ​​Second water passage hole; 30. Separating beam of fixed valve plate; 31. First water outlet through hole; 32. Second water outlet through hole; 33. Blind plate of fixed valve plate; 34. Fourth water passage hole. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 invention without creative effort are within the scope of protection of the present invention.

[0043] The principles and spirit of the present invention will be explained in detail below with reference to several representative embodiments.

[0044] Example 1 of the multifunctional water treatment filter valve provided by the present invention:

[0045] like Figure 1 As shown, the water treatment multifunctional filter valve includes a valve body 1, a drive device 4 mounted on the valve body 1, and a fixed valve plate 3 and a movable valve plate 2 installed inside the valve body 1. The drive device 4 is existing technology and is used to drive the movable valve plate 2 to rotate.

[0046] like Figure 2 and Figure 3As shown, the valve body 1 is a one-piece molded structure. The side wall of the valve body 1 is provided with an inlet 5, an outlet 6, and a drain port 7. The inlet 5 and outlet 6 are coaxially arranged and located on opposite radial sides of the valve body 1. The drain port 7 is located between the inlet 5 and outlet 6. The bottom of the valve body 1 is provided with a first filter element interface 16 and a second filter element interface 17. The first filter element interface 16 is used to communicate with the filter tank, and the second filter element interface 17 is used to communicate with the central pipe.

[0047] The valve body 1 has an outer valve chamber 8 and an inner valve chamber arranged coaxially. The outer valve chamber 8 is connected to the water inlet 5. The inner valve chamber includes a central drain chamber 9. The area outside the central drain chamber 9 is divided into four equal parts, including a forward washing chamber 10, a working chamber 11, a backwash chamber, and a blind chamber 14, each occupying an equal part along the circumference of the central drain chamber 9. The forward washing chamber 10 and the backwash chamber are located on both sides of the working chamber 11 and are adjacent to it. The top surfaces of the forward washing chamber 10, the working chamber 11, the backwash chamber, and the blind chamber 14 are on the same horizontal plane. The top of the central drain chamber 9 protrudes upwards beyond the forward washing chamber 10, the working chamber 11, the backwash chamber, and the blind chamber 14. The backwash chamber is equipped with a valve body partition beam 15, which extends vertically and divides the backwash chamber into a first outlet chamber 12 and a second outlet chamber 13, which are concentric and fan-shaped. The first outlet chamber 12 is adjacent to the central drain chamber 9. The forward wash chamber 10 and the working chamber 11 are both connected to the first filter element interface 16. The first outlet chamber 12 is connected to the second filter element interface 17. The second outlet chamber 13 is connected to the outlet 6. The pipe at the drain outlet 7 passes through the blind chamber 14 and is connected to the central drain chamber 9.

[0048] like Figure 4 and Figure 5As shown, the fixed valve plate 3 has a central through hole 27. The area of ​​the fixed valve plate 3 outside the central through hole 27 is divided into four equal parts at an angle, namely, a first water passage hole 28, a second water passage hole 29, a third water passage hole, and a fourth water passage hole 34 arranged sequentially along the circumference of the central through hole 27 and occupying an equal proportion. Among them, the third water passage hole and the fourth water passage hole 34 are provided with fixed valve plate partition beams 30 with the same central axis. The fixed valve plate partition beams 30 in the third water passage hole divide the third water passage hole into a first water outlet through hole 31 and a second water outlet through hole 32 with the same central angle. The first water outlet through hole 31 is adjacent to the central through hole 27 and corresponds vertically to and communicates with the first water outlet chamber 12. The second water outlet through hole 32 corresponds vertically to and communicates with the second water outlet chamber 13. The fourth water passage 34 corresponds vertically to the blind chamber 14. The fixed valve plate partition beam 30 inside the fourth water passage 34 divides the fourth water passage 34 into two areas. The area adjacent to the central through hole 27 is equipped with a fixed valve plate blind plate 33, and the area away from the central through hole 27 is used for water passage. The first water passage 28 corresponds vertically to and communicates with the positive washing chamber 10, and the second water passage 29 corresponds vertically to and communicates with the working chamber 11. During installation, the central through hole 27 on the fixed valve plate 3 is fitted outside the central drain chamber 9 of the inner valve cavity.

[0049] like Figure 6 and Figure 7 As shown, the movable valve plate 2 has a central groove 18. The area of ​​the movable valve plate 2 outside the central groove 18 is divided into four equal parts at a circumferential angle, including a water inlet hole 19, a first groove, a second groove, and a third groove 26 arranged along the circumference of the central groove 18, each occupying one part. The first groove and the third groove are located on both sides of the second groove and are adjacent to the second groove. The water inlet hole is opposite to the second groove. Specifically, the first groove, the second groove, and the water inlet hole 19 are all provided with movable valve plate partition beams 21 with the same central axis. The movable valve plate partition beam 21 in the first groove divides the first groove into a first blind groove 22 and a second blind groove 23 with the same central angle; the movable valve plate partition beam 21 in the second groove divides the second groove into a sewage blind groove 24 and a third blind groove 25 with the same central angle. The sewage blind groove 24 communicates with the central groove 18. The water inlet hole 19 is arranged opposite to the sewage blind channel 24. The moving valve plate partition beam 21 in the water inlet hole 19 divides the water inlet hole 19 into two areas. The area adjacent to the central groove 18 is the water inlet area of ​​the water inlet hole 19, and the area away from the central groove 18 is provided with a moving valve plate blind plate 20 that can cover the second water outlet chamber 13.

[0050] When the movable valve plate 2 rotates within the valve body 1, it forms a sealing fit with the fixed valve plate 3. The drive device 4 drives the movable valve plate 2 to rotate at different angles, enabling the valve body 1 to perform filtration, backwashing, and forward washing functions. The functions are implemented as follows:

[0051] like Figure 8 and Figure 9As shown, the multi-functional water treatment filter valve is in the filtration state. At this time, the first groove blocks the forward washing chamber 10 and the first water passage 28 in the vertical direction. The working chamber 11, the inlet hole 19, and the second water passage 29 are vertically aligned and connected. The third groove 26 blocks the backwash chamber and the third water passage in the vertical direction. The first outlet chamber 12 and the first outlet hole 31 are vertically aligned and connected. The second outlet chamber 13 and the second outlet hole 32 are vertically aligned and connected. The fixed valve plate blind plate 33 is vertically aligned with the sewage blind trough 24 to block the sewage blind trough 24. At this time, the flow path of the raw water is as follows: inlet 5 → outer valve chamber 8 → inlet hole 19 → second water passage 29 → working chamber 11 → first filter element interface 16 → filter tank → central pipe → second filter element interface 17 → first outlet chamber 12 → first outlet hole 31 → third groove 26 → second outlet hole 32 → second outlet chamber 13 → outlet 6.

[0052] like Figure 10 and Figure 11 As shown, the water treatment multi-functional filter valve is in the backwashing state. The moving valve plate 2 rotates 90° counterclockwise compared to the filtration state. At this time, the second groove blocks the forward washing chamber 10 and the first water passage 28 in the vertical direction, and the first groove blocks the working chamber 11 and the second water passage 29 in the vertical direction. The water inlet areas of the first water outlet chamber 12, the first water outlet through hole 31 and the water inlet through hole 19 are vertically aligned and connected. The moving valve plate blind plate 20 blocks the second water outlet chamber 13 and the second water outlet through hole 32 in the vertical direction. The third groove 26 blocks the blind chamber 14 and the entire fourth water passage 34 in the vertical direction. At this time, the flow path of the raw water is as follows: inlet 5 → outer valve chamber 8 → inlet through hole 19 → first outlet through hole 31 → first outlet chamber 12 → second filter element interface 17 → central pipe → filter tank → first filter element interface 16 → forward washing chamber 10 → first water passage hole 28 → sewage blind trough 24 → central sewage discharge chamber 9 → sewage outlet 7.

[0053] like Figure 12 and Figure 13As shown, the water treatment multi-functional filter valve is in the forward washing state. The moving valve plate 2 rotates 270° counterclockwise compared to the filtration state. At this time, the forward washing chamber 10, the first water passage hole 22 and the water inlet hole 19 are vertically aligned and connected. The sewage blind groove 24, the first water outlet chamber 12 and the first water outlet hole 31 are vertically aligned. The third blind groove 25 blocks the second water outlet chamber 13 and the second water outlet hole 32 in the vertical direction. The third groove 26 blocks the working chamber 11 and the second water passage hole 29 in the vertical direction. The first blind groove 22 in the first groove blocks the fixed valve plate blind plate 33 in the vertical direction. The second blind groove 23 in the first groove blocks the water passage area of ​​the fourth water passage hole 34 in the vertical direction. At this time, the flow path of the raw water is as follows: inlet 5 → outer valve chamber 8 → inlet through hole 19 → first water passage hole 28 → front washing chamber 10 → first filter element interface 16 → filter tank → central pipe → second filter element interface 17 → first outlet chamber 12 → first outlet through hole 31 → sewage blind trough 24 → central sewage discharge chamber 9 → sewage outlet 7.

[0054] Embodiment 2 of the multifunctional water treatment filter valve provided by the present invention:

[0055] The main difference between this embodiment and Example 1 lies in the structure of the valve body, the stationary valve plate, and the moving valve plate. In this embodiment, as... Figure 14 As shown, the working chamber 11 and the forward washing chamber 10 in the valve body 1 are located on both sides of the backwash chamber and are adjacent to it. The pipe at the drain outlet 7 passes through the forward washing chamber 10 and connects to the central drain chamber 9. Figure 15 As shown, the first water passage hole 28 and the second water passage hole 29 on the fixed valve plate 3 are arranged opposite to each other, and the third water passage hole and the fourth water passage hole 34 are arranged opposite to each other. The first water passage hole 28 and the second water passage hole 29 are located on both sides of the third water passage hole, respectively. At this time, a fixed valve plate partition beam 30 is only provided in the third water passage hole to divide the third water passage hole into a first water outlet hole 31 and a second water outlet hole 32 with the same central angle. No fixed valve plate partition beam 30 is provided in the fourth water passage hole 34. Figure 16 As shown, the water inlet hole 19 and the first groove on the moving valve plate 2 are located on both sides of the second groove and are adjacent to the second groove. At this time, the water inlet hole 19 and the sewage blind groove 24 are adjacent to each other, and the sewage blind groove 24 and the third groove are in a relative position.

[0056] like Figure 17 and Figure 18As shown, the multi-functional water treatment filter valve is in the filtration state. At this time, the first groove blocks the forward washing chamber 10 and the first water passage 28 in the vertical direction, and the working chamber 11, the inlet hole 19, and the second water passage 29 are vertically aligned and connected; the third groove 26 blocks the backwash chamber and the third water passage in the vertical direction, the first outlet chamber 12 and the first outlet hole 31 are vertically aligned and connected, the second outlet chamber 13 and the second outlet hole 32 are vertically aligned and connected, and the sewage blind trough 24 is vertically aligned with the blind chamber 14. At this time, the flow path of the raw water is as follows: inlet 5 → outer valve chamber 8 → inlet hole 19 → second water passage 29 → working chamber 11 → first filter element interface 16 → filter tank → central pipe → second filter element interface 17 → first outlet chamber 12 → first outlet hole 31 → third groove 26 → second outlet hole 32 → second outlet chamber 13 → outlet 6.

[0057] like Figure 19 and Figure 20 As shown, the water treatment multi-functional filter valve is in the backwash state. The moving valve plate 2 rotates 90° counterclockwise compared to the filtration state. At this time, the first groove blocks the blind chamber 14 and the fourth water passage 34 in the vertical direction; the second groove blocks the working chamber 11 and the second water passage 29 in the vertical direction; the third groove 26 blocks the forward wash chamber 10 and the first water passage 28 in the vertical direction; the water inlet areas of the first water outlet chamber 12, the first water outlet through hole 31 and the water inlet through hole 19 are vertically aligned and connected, and the moving valve plate blind plate 20 blocks the second water outlet chamber 13 and the second water outlet through hole 32 in the vertical direction. At this time, the flow path of the raw water is as follows: inlet 5 → outer valve chamber 8 → inlet hole 19 → first outlet hole 31 → first outlet chamber 12 → second filter element interface 17 → central pipe → filter tank → first filter element interface 16 → working chamber 11 → second water passage hole 29 → sewage blind channel 24 → central sewage discharge chamber 9 → sewage outlet 7.

[0058] like Figure 21 and Figure 22 As shown, the multi-functional water treatment filter valve is in the forward washing state. The moving valve plate 2 rotates 180° counterclockwise compared to the filtration state. At this time, the forward washing chamber 10, the first water passage hole 28, and the water inlet hole 19 are vertically aligned and connected. The drain blind trough 24, the first water outlet chamber 12, and the first water outlet hole 31 are vertically aligned. The third blind trough 25 blocks the second water outlet chamber 13 and the second water outlet hole 32 in the vertical direction. The first groove blocks the working chamber 11 and the second water passage hole 29 in the vertical direction. The third groove 26 blocks the blind chamber 14 and the fourth water passage hole 34 in the vertical direction. At this time, the flow path of the raw water is as follows: water inlet 5 → outer valve chamber 8 → water inlet hole 19 → first water passage hole 28 → forward washing chamber 10 → first filter element interface 16 → filter tank → central pipe → second filter element interface 17 → first water outlet chamber 12 → first water outlet hole 31 → drain blind trough 24 → central drain chamber 9 → drain outlet 7.

[0059] Embodiment 3 of the multifunctional water treatment filter valve provided by the present invention:

[0060] Its main difference from Example 1 is:

[0061] In Example 1, a fixed valve plate is provided to prevent the moving valve plate from directly wearing against the end face of the inner valve cavity in the valve body. In this example, no fixed valve plate is provided, and the moving valve plate directly contacts the end face of the inner valve cavity when rotating. In this case, to prevent wear, wear-resistant treatment can be applied to the end face of the inner valve cavity of the valve body and the moving valve plate, for example, by coating with a wear-resistant agent. Additionally, in other examples, when a fixed valve plate is provided, a blind plate may not be provided on the fixed valve plate.

[0062] Example 4 of the multifunctional water treatment filter valve provided by the present invention:

[0063] Its main difference from Example 1 is:

[0064] In Example 1, the tops of the forward wash chamber, working chamber, backwash chamber, and blind chamber are flush, while the top of the central drain chamber protrudes upwards outside the working chamber. In this example, the tops of the forward wash chamber, working chamber, backwash chamber, blind chamber, and central drain chamber are all flush. In this case, the fixed valve plate is in close contact with the end face of the inner valve cavity, and the fixed valve plate is only engaged in the valve body by the locking block on it.

[0065] It should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-functional water treatment filter valve, comprising a valve body and a movable valve plate installed within the valve body, wherein the side wall of the valve body is provided with an inlet, an outlet, and a drain outlet, and the bottom of the valve body is provided with a first filter element interface for communication with a filter tank and a second filter element interface for communication with a central pipe, characterized in that, The valve body has an outer valve cavity and an inner valve cavity arranged coaxially. The inner valve cavity includes a central drain chamber. The area of ​​the inner valve cavity outside the central drain chamber is divided into four equal parts by a circumference angle. The inner valve cavity has a forward washing chamber, a working chamber, a backwash chamber, and a blind chamber with equal central angles around the circumference of the central drain chamber. The backwash chamber is provided with a valve body partition beam to divide the backwash chamber into a first water outlet chamber and a second water outlet chamber with the same central angle. The forward washing chamber and the working chamber are both connected to the first filter element interface. The first water outlet chamber is connected to the second filter element interface. The second water outlet chamber is connected to the water outlet. The central drain chamber is connected to the drain outlet. The movable valve plate is provided with a central groove. The area of ​​the movable valve plate outside the central groove is divided into four equal parts at a circumferential angle. It includes a water inlet hole, a first groove, a second groove, and a third groove arranged along the circumferential direction of the central groove and each occupying one part. The first groove and the second groove are each provided with a movable valve plate partition beam arranged with the same central axis to divide the first groove into a first blind groove and a second blind groove with the same central angle, and to divide the second groove into a sewage blind groove and a third blind groove with the same central angle. The sewage blind groove communicates with the central groove. The water inlet hole is provided with a movable valve plate blind plate that can cover the second water outlet chamber.

2. The multi-functional water treatment filter valve according to claim 1, characterized in that, The forward washing chamber and the reverse washing chamber are located on both sides of the working chamber and are adjacent to the working chamber; the water inlet is opposite to the sewage blind trough, and the pipe at the sewage outlet passes through the blind chamber and connects to the central sewage chamber.

3. The multi-functional water treatment filter valve according to claim 1, characterized in that, The working chamber and the forward washing chamber are located on both sides of the backwash chamber and are adjacent to the backwash chamber; the water inlet is arranged adjacent to the sewage blind trough, and the pipe at the sewage outlet passes through the forward washing chamber and is connected to the central sewage discharge chamber.

4. The multi-functional water treatment filter valve according to any one of claims 1-3, characterized in that, The valve body is also provided with a fixed valve plate, and the moving valve plate is rotatably sealed with the fixed valve plate. The fixed valve plate has a central through hole, and the area of ​​the fixed valve plate outside the central through hole is divided into four equal parts at an angle, including a first water passage hole, a second water passage hole, a third water passage hole, and a fourth water passage hole arranged along the circumference of the central through hole, each accounting for an equal proportion. The third water passage hole is provided with a fixed valve plate partition beam to divide the third water passage hole into a first water outlet through hole and a second water outlet through hole with the same central angle. The first water outlet through hole corresponds vertically to and communicates with the first water outlet chamber, the second water outlet through hole corresponds vertically to and communicates with the second water outlet chamber, the first water passage hole corresponds vertically to and communicates with the front washing chamber, the second water passage hole corresponds vertically to and communicates with the working chamber, and the fourth water passage hole corresponds vertically to the blind chamber.

5. The multi-functional water treatment filter valve according to claim 4, characterized in that, The fourth water passage is equipped with a fixed valve plate blind plate. When the valve body is in the working state, the fixed valve plate blind plate corresponds vertically to the sewage blind channel to block the sewage blind channel.

6. The multi-functional water treatment filter valve according to claim 4, characterized in that, The tops of the forward washing chamber, working chamber, reverse washing chamber, and blind chamber are flush, while the top of the central drain chamber protrudes upwards outside the working chamber, and the central through hole is fitted outside the central drain chamber.

7. The multifunctional water treatment filter valve according to any one of claims 1-3, characterized in that, The valve body is a one-piece molded structure.

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