A backwashing self-cleaning device for nitrification-denitrification filters

Abstract

This utility model provides a backwashing self-cleaning device for nitrification-denitrification filters, relating to the technical field of filter cleaning equipment. It includes a fixed frame, inside which a filter tank is installed. A water outlet plate is installed on one side of the filter tank. By setting up the fixed frame, filter tank, and water storage box, water is stored through a dosing cleaning chamber and a cleaning water chamber. Opening a fourth valve allows water to be transported to the water storage box through an inlet pipe. Opening a second valve activates a first water pump, drawing water through a pumping pipe to a flushing outlet. The flushing water then enters the filter box, undergoes primary filtration through a filter screen, and then enters the filter tank for secondary filtration. The water is subsequently discharged through a discharge pipe and a drainage pipe, forming a cycle. Four casters drive the entire device for easy movement to the desired work location, improving the flexibility of the equipment during operation and meeting the needs of different work locations.

Description

Technical Field

[0001] This utility model relates to the technical field of filter bed cleaning equipment, and in particular to a backwashing self-cleaning device for nitrification and denitrification filter beds. Background Technology

[0002] With the rapid development of environmental protection and water treatment technologies, nitrification-denitrification filters have been widely used in water treatment and wastewater treatment. Nitrification-denitrification filters are typically used to remove nitrogenous pollutants from water, such as ammonia nitrogen (NH3-N) and nitrate nitrogen (NO3-N), achieving purification through nitrification and denitrification processes. The nitrification-denitrification process mainly involves the metabolic action of microorganisms to convert ammonia nitrogen into nitrate, and then denitrification to reduce nitrate back to nitrogen gas, ultimately achieving the goal of nitrogen removal.

[0003] However, during the operation of nitrification-denitrification filters, the filter media often becomes clogged or over-accumulated due to suspended solids in the water, bacterial biofilm adhesion, and sludge generated during denitrification. This leads to decreased filtration efficiency and even equipment performance loss. Therefore, backwashing technology, as one of the important maintenance measures in filters, has become crucial to ensuring the efficient operation of filters.

[0004] In practice, most existing technologies require manual backwashing, which is time-consuming and labor-intensive, wastes flushing water, and pollutes the surrounding environment when the water is directly discharged. Long-term outdoor operation also consumes a lot of electricity, increasing the overall cost of use and installation and causing many inconveniences.

[0005] Therefore, this utility model provides a backwashing self-cleaning device for nitrification and denitrification filter beds. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a backwashing self-cleaning device for nitrification and denitrification filter beds.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a backwashing self-cleaning device for nitrification-denitrification filter tanks, including a fixed frame,

[0008] A filter tank is installed inside the fixed frame, a water outlet plate is installed on one side of the filter tank, and a discharge pipe is fixedly connected to the outside of the water outlet plate.

[0009] A water storage box is installed inside the fixed frame and above the filter tank. Two first water pumps are installed on the top of the water storage box. The output end of each first water pump is fixedly connected to a water pumping pipe. One end of each water pumping pipe extends into the water storage box. A flushing outlet is installed on one side of each first water pump. A cleaning water tank is installed on one side of each first water pump. A chemical dosing cleaning tank is installed on the top of the cleaning water tank. Equally spaced connecting pipes are installed on one side of the chemical dosing cleaning tank. One end of each connecting pipe is fixedly connected to an inlet pipe extending into the water storage box. A water replenishment pipe is installed on the other side of each water replenishment pipe. A sixth valve is fixedly connected to the outside of each water replenishment pipe. The sixth valve is used to control the opening and closing of the corresponding water replenishment pipe, thereby replenishing the required cleaning water into the water storage box.

[0010] A filter box is installed on one side of the filter tank, and an internal cavity is opened inside the filter tank. A fixed frame is installed on the top of the filter tank, and a filter cylinder is installed inside the fixed frame. Dosing chambers are installed at equal intervals on one side of the fixed frame. In actual operation, the sixth valve is opened, and water is introduced into the dosing and cleaning chamber through the water supply pipe. Water can be added by connecting the water supply pipe through the connecting hose. Water is stored in the dosing and cleaning chamber and the cleaning water chamber. The fourth valve is opened, and water is transported into the water storage box through the water inlet pipe. The second valve is opened, and the first water pump starts, drawing water through the water pumping pipe to the flushing outlet. The water enters the filter box through the flushing outlet, undergoes one filtration through the filter screen, and then enters the filter tank. It is then discharged through the discharge pipe and the drainage pipe to form a cycle.

[0011] The filter tank is equipped with second water pumps that are equidistantly distributed on the side away from the filter box. The output end of each second water pump is connected to a conveying pipe. A filter tank is installed at one end of each conveying pipe. A drain pipe is installed on the outside of each filter tank. A bottom storage compartment is installed at the bottom of each filter tank.

[0012] In a preferred embodiment, a heating plate extending into the water storage box is installed at one bottom end of each of the two water pumping pipes. An inlet is installed inside the water storage box on one side of the heating plate. A storage box is fixedly connected to the side of the filter box away from the filter bed. Symmetrically distributed support columns are fixedly connected to the bottom of the storage box. One bottom end of each support column is connected to a fixed frame. The support columns support the storage box and the filter box. One side of the filter box is connected to the filter bed. A filter screen is installed at the connection between the filter box and the filter bed to perform primary filtration on the water entering the filter bed. A first valve is fixedly connected to the outside of the discharge pipe, and a second valve is fixedly connected to the outside of each of the water pumping pipes. Each side is fixedly connected to a fourth valve, and the outer side of each drainage pipe is fixedly connected to a third valve. The third valve is used to control the opening and closing of the corresponding drainage pipe. A pressure relief pipe is installed at the bottom of the water storage box, and a fifth valve is fixedly connected to the outer side of the pressure relief pipe. The fifth valve is used to control the opening and closing of the pressure relief pipe, ensuring that the pressure relief pipe assists the water storage box in rapid drainage, ensuring that the bottom storage chamber drains normally to the outside, and ensuring the first drainage operation inside the filter tank. The fourth valve is used to control the opening and closing of the corresponding water inlet pipe, ensuring that the water inlet pipe normally supplies water to the inside of the water storage box. The second valve is used to control the opening and closing of the corresponding water pumping pipe, ensuring that the water pumping pipe pumps water from inside the water storage box. The first valve is used to control the opening and closing of the discharge pipe, ensuring the second drainage operation inside the filter tank.

[0013] In a preferred embodiment, fixed side plates are fixedly connected to both sides of the fixed frame. Equally spaced positioning bolts are threaded into the interior of each of the two fixed side plates. The fixed side plates and positioning bolts cooperate to limit the connection between the fixed frame and the work site, thereby ensuring the overall stability of the equipment during subsequent operation of the power equipment. A top positioning plate is fixedly connected to one side of the water storage box. Two adjusting rods are fixedly connected to the top of the top positioning plate. Solar photovoltaic panels are installed on the top of each of the two adjusting rods. A charging controller is installed between the two adjusting rods. An inverter is installed on one side of the charging controller. The energy storage tank provides power to the power equipment. When working outdoors, solar energy is collected by the solar photovoltaic panels, converted into electrical energy by the charging controller, and stored in the energy storage tank, forming a cycle.

[0014] In a preferred embodiment, a moisture-proof base plate is fixedly connected to the bottom of the fixed frame, and casters are fixedly connected to all four sides of the bottom of the moisture-proof base plate. The moisture-proof base plate is used to provide auxiliary support for the filter tank, and the four casters are used to drive the entire equipment to move easily to the required work location, which improves the flexibility of the equipment during operation and meets the needs of different work locations.

[0015] In a preferred embodiment, a control panel is fixedly connected to the outside of the filter tank. The first valve, the energy storage tank, the solar photovoltaic panel, the charging controller, the inverter, the first water pump, the second valve, the heating plate, the third valve, the second water pump, and the fourth valve are all electrically connected to the control panel. The control panel is used to control the operation of the first valve, the energy storage tank, the solar photovoltaic panel, the charging controller, the inverter, the first water pump, the second valve, the heating plate, the third valve, the second water pump, and the fourth valve, thereby realizing unified management of electrical equipment.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0017] By setting up a fixed frame, filter tank, and water storage box, during actual operation, the sixth valve is opened to draw water into the chemical dosing and cleaning chamber through the water supply pipe. Water replenishment can be performed by connecting a hose to the water supply pipe. Water is stored in the chemical dosing and cleaning chamber and the cleaning water tank. The fourth valve is opened to deliver water to the water storage box through the inlet pipe. The second valve is opened, and the first water pump operates, drawing water through the pumping pipe to the flushing outlet. The water then enters the filter box and undergoes primary filtration through the filter screen before entering the filter tank for secondary filtration. The water is then discharged through the discharge and drainage pipes, forming a cycle. The third valve controls the opening and closing of the corresponding drainage pipe. A pressure relief pipe is installed at the bottom of the water storage box, and the energy storage tank is used to supply power to the electrical equipment. Power supply is guaranteed. When operating outdoors, solar photovoltaic panels collect solar energy, which is converted into electricity by the charging controller and stored in the battery compartment, forming a cycle. Support columns support the storage box and filter box. One side of the filter box is connected to the filter pool. A filter screen is installed at the connection between the filter box and the filter pool to perform primary filtration of the water entering the filter pool. Fixed side plates and positioning bolts work together to limit the connection between the fixed frame and the work site, thereby ensuring the stability of the overall equipment when the power equipment is running. A moisture-proof bottom plate is used to provide auxiliary support for the filter pool. Four omnidirectional wheels are used to drive the entire equipment to move easily to the required work site, improving the flexibility of the equipment during operation and meeting the needs of different work sites. Attached Figure Description

[0018] Figure 1 This utility model provides an overall structural schematic diagram of a backwashing self-cleaning device for nitrification-denitrification filters.

[0019] Figure 2 This utility model provides an internal schematic diagram of the overall structure of a backwashing self-cleaning device for nitrification and denitrification filters.

[0020] Figure 3 A schematic diagram of the enlarged structure of a backwashing self-cleaning device for nitrification-denitrification filters provided by this utility model. Figure 1 ;

[0021] Figure 4 A schematic diagram of the enlarged structure of a backwashing self-cleaning device for nitrification-denitrification filters provided by this utility model. Figure 2 ;

[0022] Figure 5 This utility model provides an accessory for a backwashing self-cleaning device for nitrification and denitrification filters. Figure 4 Enlarged schematic diagram of the structure at point A in the diagram;

[0023] Figure 6 This utility model provides an accessory for a backwashing self-cleaning device for nitrification and denitrification filters. Figure 2 Enlarged schematic diagram of the structure at point B in the diagram.

[0024] Legend:

[0025] 1. Fixed frame; 11. Fixed side plate; 12. Positioning bolts; 13. Casters; 14. Drain pipe; 15. First valve; 16. Water outlet plate; 17. Moisture-proof base plate;

[0026] 2. Filter bed; 21. Control panel; 22. Filter box; 23. Storage box; 24. Filter screen; 25. Internal cavity; 26. Fixing frame; 27. Filter cartridge; 28. Chemical dosing chamber; 29. ​​Support column;

[0027] 3. Top positioning plate; 31. Energy storage compartment; 32. Adjustment rod; 33. Solar photovoltaic panel; 34. Charging controller; 35. Inverter;

[0028] 4. Water storage box; 41. First water pump; 42. Pumping pipe; 43. Second valve; 44. Heating plate; 45. Water inlet; 46. Pressure relief pipe; 47. Flushing outlet;

[0029] 5. Filter tank; 51. Conveying pipeline; 52. Drainage pipeline; 53. Third valve; 54. Bottom storage compartment; 55. Second water pump;

[0030] 6. Cleaning water tank; 61. Chemical dosing cleaning tank; 62. Connecting pipe; 63. Inlet pipe; 64. Fourth valve. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] like Figures 1-6 As shown, this embodiment provides a technical solution: a backwashing self-cleaning device for nitrification-denitrification filter, including a fixed frame 1, a filter tank 2 installed inside the fixed frame 1, an outlet plate 16 installed on one side of the filter tank 2, and a discharge pipe 14 fixedly connected to the outside of the outlet plate 16.

[0033] In this scheme, a water storage box 4 is installed inside the fixed frame 1 and above the filter tank 2. Two first water pumps 41 are installed on the top of the water storage box 4. The output end of each first water pump 41 is fixedly connected to a water pumping pipe 42. One end of each water pumping pipe 42 extends into the water storage box 4. A flushing outlet 47 is installed on one side of each first water pump 41. A cleaning water tank 6 is installed on one side of the first water pump 41. A chemical dosing cleaning tank 61 is installed on the top of the cleaning water tank 6. A connecting pipe 62 is installed on one side of the chemical dosing cleaning tank 61. One end of each connecting pipe 62 is fixedly connected to an inlet pipe 63 extending into the water storage box 4. A water replenishment pipe is installed on the other side of the chemical dosing cleaning tank 61. A sixth valve is fixedly connected to the outside of each water replenishment pipe. The sixth valve is used to control the opening and closing of the corresponding water replenishment pipe, thereby replenishing the required cleaning water into the water storage box 4.

[0034] In this scheme, a filter box 22 is installed on one side of the filter pool 2. The filter pool 2 has an internal cavity 25. A fixing frame 26 is installed on the top of the filter pool 2. A filter cylinder 27 is installed inside the fixing frame 26. A dosing chamber 28 is installed on one side of the fixing frame 26 at equal intervals. In actual operation, the sixth valve is opened, and water is connected to the dosing cleaning chamber 61 through the water supply pipe. Water supply can be carried out by connecting the water supply pipe through the connecting hose. Water is stored in the dosing cleaning chamber 61 and the cleaning water chamber 6. The fourth valve 64 is opened, and water is transported to the water storage box 4 through the water inlet pipe 63 for storage. The second valve 43 is opened, and the first water pump 41 is started. Water is pumped to the flushing outlet 47 through the water pumping pipe 42. Water enters the filter box 22 through the flushing outlet 47 and is filtered once through the filter screen 24. Then it enters the filter pool 2 and is discharged through the discharge pipe 14 and the drainage pipe 52 to form a cycle.

[0035] In this scheme, second water pumps 55 are installed at equal intervals on the side of filter tank 2 away from filter box 22. The output end of each second water pump 55 is connected to a conveying pipe 51. A filter tank 5 is installed at one end of each conveying pipe 51. A drain pipe 52 is installed on the outside of each filter tank 5. A bottom storage compartment 54 is installed at the bottom of each filter tank 5.

[0036] Going a step further, such as Figures 1-5As shown: In this scheme, heating plates 44 extending into the water storage box 4 are installed at the bottom end of both water pumping pipes 42. Water inlets 45 are installed inside the water storage box 4 and on one side of the heating plates 44. A storage box 23 is fixedly connected to the side of the filter box 22 away from the filter pool 2. Symmetrically distributed support columns 29 are fixedly connected to the bottom of the storage box 23. One bottom end of each support column 29 is connected to the fixed frame 1. The support columns 29 are used to support the storage box 23 and the filter box 22. One side of the filter box 22 is connected to the filter pool 2. A filter screen 24 is installed at the connection between the filter box 22 and the filter pool 2 to perform a primary filtration treatment on the water entering the filter pool 2.

[0037] In this scheme, a first valve 15 is fixedly connected to the outside of the discharge pipe 14, a second valve 43 is fixedly connected to the outside of each of the pumping pipes 42, a fourth valve 64 is fixedly connected to the outside of each of the inlet pipes 63, and a third valve 53 is fixedly connected to the outside of each of the drain pipes 52. The third valve 53 is used to control the opening and closing of the corresponding drain pipe 52. A pressure relief pipe 46 is installed at the bottom of the water storage box 4, and a fifth valve is fixedly connected to the outside of the pressure relief pipe 46. The fifth valve is used to control the opening and closing of the pressure relief pipe 46, ensuring that the pressure relief pipe 46 assists the water storage box 4 in rapid drainage, ensuring that the bottom storage chamber 54 drains normally to the outside, and ensuring the first drainage operation inside the filter tank 2. The fourth valve 64 is used to control the opening and closing of the corresponding inlet pipe 63, ensuring that the inlet pipe 63 normally supplies water to the inside of the water storage box 4. The second valve 43 is used to control the opening and closing of the corresponding pumping pipe 42, ensuring that the pumping pipe 42 pumps water from inside the water storage box 4. The first valve 15 is used to control the opening and closing of the discharge pipe 14, ensuring the second drainage operation inside the filter tank 2.

[0038] Going a step further, such as Figures 1-5 As shown: In this scheme, fixed side plates 11 are fixedly connected to both sides of the fixed frame 1. The interior of the two fixed side plates 11 is threaded with equally spaced positioning bolts 12. The fixed side plates 11 and the positioning bolts 12 cooperate to limit the connection between the fixed frame 1 and the work site, thereby ensuring the stability of the overall equipment when the power equipment is in operation.

[0039] In this solution, a moisture-proof base plate 17 is fixedly connected to the bottom of the fixed frame 1. All four sides of the bottom of the moisture-proof base plate 17 are fixedly connected to casters 13. The moisture-proof base plate 17 is used to provide auxiliary support for the filter tank 2. The four casters 13 are used to drive the whole equipment to move easily to the required work location, which improves the flexibility of the equipment during operation and meets the needs of different work locations.

[0040] Going a step further, such as Figures 1-6As shown, in this scheme, a top positioning plate 3 is fixedly connected to one side of the water storage box 4. Two adjusting rods 32 are fixedly connected to the top of the top positioning plate 3. A solar photovoltaic panel 33 is installed on the top of each of the two adjusting rods 32. A charging controller 34 is installed between the two adjusting rods 32. An inverter 35 is installed on one side of the charging controller 34. The energy storage tank 31 is used to provide power to the electrical equipment. When working outdoors, the solar photovoltaic panel 33 collects solar energy, which is converted into electrical energy by the charging controller 34 and stored in the energy storage tank 31 to form a cycle.

[0041] In this scheme, a control panel 21 is fixedly connected to the outside of the filter tank 2. The first valve 15, the energy storage tank 31, the solar photovoltaic panel 33, the charging controller 34, the inverter 35, the first water pump 41, the second valve 43, the heating plate 44, the third valve 53, the second water pump 55, and the fourth valve 64 are all electrically connected to the control panel 21. The control panel 21 is used to control the operation of the first valve 15, the energy storage tank 31, the solar photovoltaic panel 33, the charging controller 34, the inverter 35, the first water pump 41, the second valve 43, the heating plate 44, the third valve 53, the second water pump 55, and the fourth valve 64, thereby realizing unified management of electrical equipment.

[0042] Working principle:

[0043] like Figures 1-6 As shown:

[0044] By setting up a fixed frame 1, a filter tank 2, and a water storage box 4, when in use, the control panel 21 is opened. Water supply pipes are installed on the other side of the dosing and cleaning chamber 61. A sixth valve is fixedly connected to the outside of each water supply pipe. The sixth valve controls the opening and closing of the corresponding water supply pipe, thereby replenishing the required cleaning water into the water storage box 4. In actual operation, the sixth valve is opened, and water is supplied to the dosing and cleaning chamber 61 through the water supply pipe. Water supply can be performed by connecting a hose to the water supply pipe. Water is stored in the dosing and cleaning chamber 61 and the cleaning water tank 6. The fourth valve 64 is opened, and water is transported to the water storage box 4 through the inlet pipe 63. The second valve 43 is opened, and the first water pump 41 operates, pumping water through the pumping pipe 42 to the rinsing area. Water flows into the filter box 22 through the outlet 47, undergoes primary filtration through the filter screen 24, and then enters the filter pool 2 for secondary filtration. The water is then discharged through the discharge pipe 14 and the drain pipe 52, forming a cycle. The third valve 53 controls the opening and closing of the corresponding drain pipe 52. A pressure relief pipe 46 is installed at the bottom of the water storage box 4, and a fifth valve is fixedly connected to the outside of the pressure relief pipe 46. The fifth valve controls the opening and closing of the pressure relief pipe 46, ensuring rapid drainage of the water storage box 4, ensuring normal drainage from the bottom storage chamber 54 to the outside, and ensuring primary drainage of the filter pool 2. The fourth valve 64 controls the opening and closing of the corresponding inlet pipe 63, ensuring the smooth operation of the inlet pipe 63. Normal water intake is introduced into the water storage box 4. The second valve 43 controls the opening and closing of the corresponding pumping pipe 42, ensuring that the pumping pipe 42 pumps water from inside the water storage box 4. The first valve 15 controls the opening and closing of the discharge pipe 14, ensuring secondary drainage inside the filter tank 2. The energy storage tank 31 provides power to the electrical equipment. When operating outdoors, solar energy is collected by the solar photovoltaic panel 33, converted into electrical energy by the charging controller 34, and stored in the energy storage tank 31, forming a cycle. The control panel 21 controls the first valve 15, the energy storage tank 31, the solar photovoltaic panel 33, the charging controller 34, the inverter 35, the first water pump 41, the second valve 43, the heating plate 44, and the third valve 53. The operation of the second water pump 55 and the fourth valve 64 enables unified management of the power equipment. The support column 29 is used to support the storage box 23 and the filter box 22. One side of the filter box 22 is connected to the filter pool 2. A filter screen 24 is installed at the connection between the filter box 22 and the filter pool 2 to perform primary filtration of the water entering the filter pool 2. The fixed side plate 11 and the positioning bolt 12 work together to limit the connection between the fixed frame 1 and the work site, thereby ensuring the stability of the overall equipment when the power equipment is in operation. The moisture-proof bottom plate 17 is used to provide auxiliary support for the filter pool 2. The four casters 13 are used to drive the overall equipment to move easily to the required work site, improving the flexibility of the equipment during operation and meeting the needs of different work sites.

[0045] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A backwashing self-cleaning device for nitrification-denitrification filters, comprising a fixed frame (1), characterized in that, A filter tank (2) is installed inside the fixed frame (1), and a water outlet plate (16) is installed on one side of the filter tank (2). A discharge pipe (14) is fixedly connected to the outside of the water outlet plate (16). A water storage box (4) is installed inside the fixed frame (1) and above the filter tank (2). Two first water pumps (41) are installed on the top of the water storage box (4). The output end of each of the first water pumps (41) is fixedly connected to a water pumping pipe (42). One end of each water pumping pipe (42) extends into the water storage box (4). A flushing outlet (47) is installed on one side of each of the first water pumps (41). A cleaning water tank (6) is installed on one side of the first water pumps (41). A chemical cleaning tank (61) is installed on the top of the cleaning water tank (6). A connecting pipe (62) is installed on one side of the chemical cleaning tank (61). A connecting pipe (62) is evenly distributed. One end of each connecting pipe (62) is fixedly connected to an inlet pipe (63) extending into the water storage box (4). A filter box (22) is installed on one side of the filter pool (2). A second water pump (55) is installed on the side of the filter pool (2) away from the filter box (22) at equal intervals. The output end of the second water pump (55) is connected to a conveying pipe (51). A filter tank (5) is installed at one end of the conveying pipe (51). A drain pipe (52) is installed on the outside of the filter tank (5).

2. The backwash self-cleaning apparatus for a nitritation denitrification filter according to claim 1, characterized by: A heating plate (44) extending into the water storage box (4) is installed at one end of the bottom of each of the two water pumping pipes (42). A water inlet (45) is installed inside the water storage box (4) and on one side of the heating plate (44). A storage box (23) is fixedly connected to the side of the filter box (22) away from the filter pool (2). Symmetrically distributed support columns (29) are fixedly connected to the bottom of the storage box (23). One end of the bottom of each support column (29) is connected to the fixed frame (1).

3. The backwashing self-cleaning device for nitrification-denitrification filter beds according to claim 2, characterized in that: A fixed frame (26) is installed on the top of the filter tank (2). A filter cylinder (27) is installed inside the fixed frame (26). A dosing chamber (28) is installed on one side of the fixed frame (26) at equal intervals. A first valve (15) is fixedly connected to the outside of the discharge pipe (14). A second valve (43) is fixedly connected to the outside of the water pumping pipe (42). A fourth valve (64) is fixedly connected to the outside of the water inlet pipe (63). A third valve (53) is fixedly connected to the outside of the drainage pipe (52). The third valve (53) is used to control the opening and closing of the corresponding drainage pipe (52). A pressure relief pipe (46) is installed at the bottom of the water storage box (4). A fifth valve is fixedly connected to the outside of the pressure relief pipe (46).

4. The backwashing self-cleaning device for nitrification-denitrification filter beds according to claim 3, characterized in that: Both sides of the fixed frame (1) are fixedly connected to fixed side plates (11), and the interior of the two fixed side plates (11) is threaded with equally spaced positioning bolts (12).

5. The backwashing self-cleaning device for nitrification-denitrification filter according to claim 3, characterized in that: A top positioning plate (3) is fixedly connected to one side of the water storage box (4). Two adjusting rods (32) are fixedly connected to the top of the top positioning plate (3). A solar photovoltaic panel (33) is installed on the top of each of the two adjusting rods (32). A charging controller (34) is installed between the two adjusting rods (32). An inverter (35) is installed on one side of the charging controller (34).

6. The backwashing self-cleaning device for nitrification-denitrification filters according to claim 1, characterized in that: The bottom of the fixed frame (1) is fixedly connected to a moisture-proof base plate (17), and the bottom of the moisture-proof base plate (17) is fixedly connected to casters (13) on all four sides.

7. The backwashing self-cleaning device for nitrification-denitrification filter according to claim 5, characterized in that: The filter tank (2) is fixedly connected to a control panel (21). The first valve (15), the energy storage tank (31), the solar photovoltaic panel (33), the charging controller (34), the inverter (35), the first water pump (41), the second valve (43), the heating plate (44), the third valve (53), the second water pump (55), and the fourth valve (64) are all electrically connected to the control panel (21).

Images