A sponge city water purification device

Abstract

The present invention discloses a sponge city water purification device, which relates to the field of environmental science and engineering technology. The device comprises an ecological floating island, a water collection pipe and a treatment tank. A collection device, a treatment device and an auxiliary device are arranged under the ecological floating island. By setting the collection device, a breeding plate is arranged on the ecological floating island to cultivate ecological plants. The ecological plants can directly or indirectly absorb and utilize nutrients such as dissolved nitrogen and phosphorus in the water body, or convert them into non-toxic intermediate metabolites and store them in plant cells, thereby achieving the purpose of removing some pollutants in the water. The water body after being decontaminated by the ecological plants will enter the water collection pipe. The discard ball can reduce the workload and cost of subsequent purification treatment, and can also reduce the cost of maintenance and management. The reciprocating baffle can make the water flow entering the purification device pass through various parts of the purification device more evenly, thereby improving the overall purification effect.

Description

Technical Field

[0001] The present invention relates to the field of environmental science and engineering technology, and in particular to a sponge city water purification device. Background Art

[0002] The design and application of sponge city water purification devices stem from a deep understanding of and proactive response to the water environment challenges facing modern cities. With the rapid development of urbanization, a series of water environmental issues, such as urban waterlogging, water resource shortages, water pollution, and ecosystem degradation, have become increasingly prominent. The goal is to achieve the natural accumulation, infiltration, and purification of rainwater, thereby enhancing the self-repairing capacity of the urban water environment.

[0003] Patent publication number CN209242769U relates to the field of environmental science and engineering technology. The patent discloses a water purification device for a sponge city, comprising a floating platform, a solar power storage structure, and a second mesh cover. A mesh frame is provided in the center of the floating platform, and the solar power storage structure is installed on the right side of the mesh frame. Electric telescopic rods are provided at the four corners of the lower end surface of the floating platform, and a pad is provided between the floating platform and the electric telescopic rods. The lower end surface of the floating platform is surrounded by a first mesh cover, and a second mesh cover is provided directly below the first mesh cover. The water purification device of the sponge city has a more reasonable overall structure. It is equipped with an ecological floating bed for cultivating water-purifying aquatic plants, which can reduce eutrophication of the water body, purify water quality, beautify the water environment, and make the water clear. At the same time, a mesh cover with easily adjustable height is provided for cultivating fish. The water purification plants on the ecological floating bed and the fish under the ecological floating bed are used to ecologically restore the water body, purifying the water quality on the one hand and also having ornamental and economic value on the other.

[0004] The above patent, on the one hand, purifies the water quality, and on the other hand, it also has ornamental and economic value. However, the following problems still exist: when the water flow cannot be controlled, the water will flow through the treatment tank quickly, resulting in the inability of various purification measures to fully act on the water body. This may cause a large amount of pollutants to pass through the system without being effectively treated, reducing the purification efficiency of the entire device. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention provides a sponge city water purification device to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a sponge city water purification device, including an ecological floating island, a water collection pipe and a treatment tank, the water collection pipe is arranged below the ecological floating island, the treatment tank is arranged below the water collection pipe, and a collection device, a treatment device and an auxiliary device are arranged below the ecological floating island; wherein, the collection device includes a breeding plate, a fixed rod, a float, a discard ball, a water tank, a water filling port, a baffle, an electric push rod, a connecting button, a circular groove block, a rotating motor and a round rod, the breeding plate is arranged on the top of the ecological floating island, and ecological plants are arranged inside the breeding plate, the fixed rod is slidably installed on the inner wall of the water collection pipe, the float is fixedly installed on the circumferential surface of the fixed rod, the discard ball is fixedly installed on the circumferential surface of the fixed rod, and the water tank is arranged on the top of the ecological floating island. The water after being decontaminated by the ecological plants will enter the water collection pipe. When the water flow is relatively slow, part of the water will enter the water collection pipe at the discard ball. After entering the water tank, when the water flow is turbulent, the float will move upward with the water level, and the movement of the float drives the fixed rod to move, and the movement of the fixed rod drives the discard ball to move. At this time, the discard ball blocks the discard outlet, and the water inlet is arranged on the top of the treatment tank, and the water inlet is connected to the treatment tank, and the baffle is rotatably mounted on the inner wall of the water inlet, and the fixed end of the electric push rod is fixedly mounted on the surface of the water inlet, one side of the connecting button is fixedly mounted on the output end of the electric push rod, and the circular groove block is fixedly mounted on the surface of the baffle close to the electric push rod, and the other side of the connecting button is slidably mounted on the inner wall of the circular groove block, and the fixed end of the rotating motor is fixedly mounted on the top of the treatment tank, and the round rod is rotatably mounted on the surface of the treatment tank, and the round rod is connected to the output end of the rotating motor through a No. 1 belt, and is extended by the output end of the electric push rod to drive the connecting button to move, and the movement of the connecting button drives the circular groove block to rotate, and the rotation of the circular groove block drives the baffle to rotate back and forth.

[0007] According to the above technical solution, the bottom of the ecological floating island is connected to the water collection pipe, and the water after the ecological plants are decontaminated will enter the water collection pipe. The water collection pipe is connected to the water inlet, and water enters the water inlet through the water collection pipe.

[0008] According to the above technical solution, the processing device includes a fixed block, a rotating rod and a filter plate. The fixed block is fixedly passed through the inner and outer walls of the processing tank. The rotating rod is rotatably installed on the inner wall of the fixed block. The filter plate is fixedly installed on the surface of the rotating rod. When the rotating rod is rotated counterclockwise, the rotating rod rotates and drives the filter plate to rotate. The rotation of the filter plate causes the accumulated impurities to fall downward due to gravity.

[0009] According to the above technical solution, the processing device also includes a ratchet wheel and a limit rod, the ratchet wheel fixing button is installed on the circumferential surface of the rotating rod, the limit rod is slidably installed on the surface of the fixed block, and a No. 1 spring is provided between the limit rod and the fixed block, and the limit rod is driven to reset by the provided No. 1 spring. The bottom of the limit rod is set as an inclined surface. After the filter plate is reset, when the rotating rod is reversed due to an external force, the ratchet wheel will contact the non-inclined surface of the limit rod. At this time, the ratchet wheel cannot rotate, that is, the rotating rod cannot rotate.

[0010] According to the above technical solution, the processing device also includes a medicine tank, a crushing piece, a conveying pipe and a scraper rod. The medicine tank is fixedly installed on the surface of the processing tank, the crushing piece is fixedly installed on the circumferential surface of the round rod, the conveying pipe connects the medicine tank and the processing tank, and the scraper rod is fixedly installed on the circumferential surface of the round rod. When medicine is added to the medicine tank, the crushing piece is driven to rotate by the rotation of the round rod. The rotation of the crushing piece will break up the agglomerated medicine. The rotation of the round rod drives the scraper to rotate at the same time. The broken medicine is collected by the scraper and enters the processing tank through the conveying pipe.

[0011] According to the above technical solution, the processing device also includes gear 1 and gear 2. Gear 1 is fixedly installed at the bottom of the scraper rod, and gear 2 is rotatably installed on the inner wall of the processing tank. Gear 1 is engaged with gear 2. The rotation of the scraper drives gear 1 to rotate, and the rotation of gear 1 drives gear 2 to rotate.

[0012] According to the above technical solution, the auxiliary device includes a tripod, a rotating shaft, a stirring blade and a stirring plate. The tripod is fixedly mounted on the inner wall of gear 2, the rotating shaft is fixedly mounted on the inner wall of the tripod, a reciprocating spiral groove is provided on the circumferential surface of the rotating shaft, the rotation of the tripod drives the rotating shaft to rotate, the rotation of the rotating shaft drives the stirring blade to rotate, the stirring plate is threadedly mounted on the circumferential surface of the rotating shaft, the rotation of the rotating shaft drives the reciprocating spiral groove to rotate, and the rotation of the reciprocating spiral groove causes the stirring plate to move back and forth up and down.

[0013] According to the above technical solution, the auxiliary device also includes a fixed plate, a brush, an output port and a drain port. The fixed plate is fixedly installed on the top of the rotating shaft. The brush is arranged on the surface of the fixed plate close to the tripod. The output port is arranged on the circumferential surface of the treatment tank. The drain port is arranged on the circumferential surface of the treatment tank. The output port is connected with the treatment tank. The circumferential surface of the output port is provided with valve 1. The drain port is connected with the treatment tank. The circumferential surface of the drain port is provided with valve 2. Impurities dropped from the filter plate are discharged through the drain port, and the mixed water is discharged through the output port.

[0014] The present invention provides a sponge city water purification device. It has the following beneficial effects:

[0015] (1) This invention, through the setting of a collection device, sets up an ecological floating island on the water surface, and sets up a breeding plate on the ecological floating island to cultivate ecological plants. The ecological plants can directly or indirectly absorb and utilize the nutrients such as dissolved nitrogen and phosphorus in the water body, assimilate and utilize them as components of the plant body, and can also convert pollutants into carbon dioxide and water through volatilization, metabolism or mineralization, or convert them into non-toxic intermediate metabolites and store them in plant cells, thereby achieving the purpose of removing some pollutants in the water. The water body after the ecological plants are decontaminated will enter the water collection pipe. When the water flow is relatively slow, part of the water will enter the water collection pipe at the waste flow ball and then enter the water tank. When the water flow is turbulent, the waste flow ball will block the waste flow outlet, which can reduce the workload and cost of subsequent purification treatment, and also reduce the cost of maintenance and management. The reciprocating baffle makes the water flow entering the purification device pass through each part of the purification device more evenly, thereby improving the overall purification effect. The water enters the treatment tank through the water filling port.

[0016] (2) In this invention, water enters the treatment tank and is filtered through the filter plate through the treatment device. After long-term use, the filter plate will accumulate impurities, which will reduce the filtering effect of the filter plate. The counterclockwise rotation of the rotating rod causes the accumulated impurities to fall downward by gravity. Traditional filter plate cleaning requires disassembly, which is not only time-consuming and labor-intensive, but may also affect the normal operation of the water purification device. In this way, the filter plate can be cleaned without disassembling it, which simplifies the cleaning process and improves the cleaning efficiency. When the rotating rod is reversed due to an external force, the filter plate can be prevented from rotating by accidental touch by the ratchet wheel and the limit rod. The medicine is added to the medicine tank, and the crushed medicine is collected by the scraper through the round rod and the crushing piece and enters the treatment tank through the conveying pipe. After the medicine is stirred and crushed, the particles become smaller, the surface area increases, and the contact area with water increases, thereby accelerating the dissolution rate, which helps the medicine to react with the pollutants in the water faster and improve the purification efficiency.

[0017] (3) This invention, through the setting of auxiliary devices, makes the reagent and water body fully mixed through gear 2, tripod, rotating shaft and stirring blade. The rotation of the rotating shaft drives the reciprocating spiral groove to rotate, and the rotation of the reciprocating spiral groove makes the stirring plate move up and down. The movement of the stirring plate makes the reagent deposited on the bottom of the inner wall of the treatment tank be drained to the working range of the stirring blade. During the rotation of the tripod, there may be objects remaining on the top of the tripod and unable to fall off. At this time, the impurities on the surface are brushed off by the rotating shaft, fixed plate and brush to prevent these impurities from accumulating and clogging the connection between the rotating shaft and the tripod. The impurities dropped from the filter plate are discharged through the sewage outlet, and the mixed water body is discharged through the output port. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 Schematic diagram of the internal structure of the water collecting pipe of the present invention;

[0020] Figure 3 This is a schematic diagram of the internal structure of the treatment tank of the present invention;

[0021] Figure 4 For the present invention Figure 3 A schematic diagram of the structure of part A in the middle;

[0022] Figure 5 This is a schematic diagram of the position structure of the filter plate and the rotating motor of the present invention;

[0023] Figure 6 For the present invention Figure 5 A magnified schematic diagram of the structure of part B;

[0024] Figure 7 This is a schematic diagram of the position structure of the rotating shaft and the tripod of the present invention;

[0025] Figure 8 For the present invention Figure 7 A magnified schematic diagram of the structure of part C in the middle;

[0026] Figure 9 For the present invention Figure 7 Schematic diagram of the enlarged structure of part D.

[0027] In the figure: 1. Ecological floating island; 2. Breeding plate; 3. Water collection pipe; 4. Fixed rod; 5. Float; 6. Discard ball; 7. Water tank; 8. Treatment tank; 9. Water filling port; 10. Baffle; 11. Electric push rod; 12. Connecting button; 13. Round groove block; 14. Rotating motor; 15. Round rod; 20. Fixed block; 21. Rotating rod; 22. Filter plate; 23. Ratchet wheel; 24. Limit rod; 25. Medicine tank; 26. Crushing piece; 27. Delivery pipe; 28. Scraper rod; 29. Gear 1; 210. Gear 2; 30. Tripod; 31. Rotating shaft; 32. Agitating piece; 33. Agitating plate; 34. Fixed plate; 35. Brush; 36. Output port; 37. Sewage outlet. DETAILED DESCRIPTION

[0028] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 4One embodiment of the present invention is: a sponge city water purification device, including an ecological floating island 1, a water collection pipe 3 and a treatment tank 8, the water collection pipe 3 is arranged below the ecological floating island 1, and the treatment tank 8 is arranged below the water collection pipe 3. A collection device is arranged below the ecological floating island 1, and the collection device includes a breeding plate 2, a fixed rod 4, a float 5, a discard ball 6, a water tank 7, a water inlet 9, a baffle 10, an electric push rod 11, a connecting button 12, a circular groove block 13, a rotating motor 14 and a round rod 15. The breeding plate 2 is arranged on the top of the ecological floating island 1, and ecological plants are arranged inside the breeding plate 2. By arranging the ecological floating island 1 on the water surface and arranging the breeding plate 2 on the ecological floating island 1 to cultivate ecological plants, the ecological plants can directly or indirectly absorb and utilize nutrients such as dissolved nitrogen and phosphorus in the water body, and assimilate and utilize them as components of the plant body. The fixed rod 4 is slidably installed on the inner wall of the water collection pipe 3, and the float 5 is fixedly installed On the circumferential surface of the fixed rod 4, the discard ball 6 is fixedly installed on the circumferential surface of the fixed rod 4, the water tank 7 is arranged on the top of the ecological floating island 1, the water filling port 9 is arranged on the top of the treatment tank 8, the water filling port 9 is connected to the treatment tank 8, the baffle 10 is rotatably installed on the inner wall of the water filling port 9, the fixed end of the electric push rod 11 is fixedly installed on the surface of the water filling port 9, one side of the connecting button 12 is fixedly installed on the output end of the electric push rod 11, the circular groove block 13 is fixedly installed on the surface of the baffle 10 close to the electric push rod 11, and the other side of the connecting button 12 is slidably installed on the inner wall of the circular groove block 13, the fixed end of the rotating motor 14 is fixedly installed on the top of the treatment tank 8, the round rod 15 is rotatably installed on the surface of the treatment tank 8, and the round rod 15 is transmission-connected to the output end of the rotating motor 14 through the No. 1 belt. The water flow entering the purification device passes through various parts of the purification device more evenly through the reciprocating baffle 10, thereby improving the overall purification effect.

[0030] The bottom of the ecological floating island 1 is connected to the water collecting pipe 3, and the water after the ecological plants are decontaminated will enter the water collecting pipe 3. The water collecting pipe 3 is connected to the water inlet 9, and the water enters the water inlet 9 through the water collecting pipe 3.

[0031] When this embodiment is working, an ecological floating island 1 is set on the water surface, and a breeding plate 2 is set on the ecological floating island 1 to cultivate ecological plants. The ecological plants can directly or indirectly absorb and utilize nutrients such as dissolved nitrogen and phosphorus in the water body, assimilate and utilize them as components of the plant body, and can also convert pollutants into carbon dioxide and water through volatilization, metabolism or mineralization, or convert them into non-toxic intermediate metabolites and store them in plant cells, thereby achieving the purpose of removing some pollutants in the water. The water body after the ecological plant decontamination will enter the water collection pipe 3. When the water flow is relatively slow, part of the water will enter the water collection pipe 3 at the waste flow ball 6 and then enter the water tank 7. When the water flow is turbulent, the float 5 will move upward with the water level, and the float 5 will move upward. The movement drives the fixed rod 4 to move, and the movement of the fixed rod 4 drives the discard ball 6 to move. At this time, the discard ball 6 blocks the discard port, which can reduce the workload and cost of subsequent purification treatment, and also reduce the cost of maintenance and management. The output end of the rotating motor 14 rotates to drive the No. 1 belt to drive the round rod 15 to rotate, and water enters the water filling port 9 through the water collecting pipe 3. The output end of the electric push rod 11 extends to drive the connecting button 12 to move, and the movement of the connecting button 12 drives the circular groove block 13 to rotate. The rotation of the circular groove block 13 drives the baffle 10 to reciprocate. The reciprocating rotation of the baffle 10 makes the water flow entering the purification device pass through each part of the purification device more evenly, thereby improving the overall purification effect. Water enters the treatment tank 8 through the water filling port 9.

[0032] See also Figures 1-9 On the basis of the above embodiment, in another embodiment of the present invention, a processing device and an auxiliary device are provided under the ecological floating island 1. The processing device includes a fixed block 20, a rotating rod 21 and a filter plate 22. The fixed block 20 is fixedly penetrated through the inner and outer walls of the processing tank 8. The rotating rod 21 is rotatably installed on the inner wall of the fixed block 20. The filter plate 22 is fixedly installed on the surface of the rotating rod 21. After long-term use, debris will accumulate on the filter plate 22, which will reduce the filtering effect of the filter plate 22. When the rotating rod 21 is rotated counterclockwise, the rotating rod 21 rotates and drives the filter plate 22 to rotate. The rotation of the filter plate 22 causes the accumulated impurities to fall downward by gravity. In this way, cleaning can be carried out without removing the filter plate 22, which simplifies the cleaning process and improves the cleaning efficiency.

[0033] The processing device also includes a ratchet wheel 23 and a limit rod 24. The fixing button of the ratchet wheel 23 is installed on the circumferential surface of the rotating rod 21. The limit rod 24 is slidably installed on the surface of the fixed block 20. A No. 1 spring is provided between the limit rod 24 and the fixed block 20. The limit rod 24 is reset by the provided No. 1 spring. The bottom of the limit rod 24 is provided as an inclined surface. In this way, the filter plate 22 can be prevented from being accidentally touched.

[0034] The treatment device also includes a medicine tank 25, a crushing piece 26, a conveying pipe 27 and a scraper rod 28. The medicine tank 25 is fixedly mounted on the surface of the treatment tank 8, the crushing piece 26 is fixedly mounted on the circumferential surface of the round rod 15, the conveying pipe 27 connects the medicine tank 25 and the treatment tank 8, and the scraper rod 28 is fixedly mounted on the circumferential surface of the round rod 15. After the medicine is stirred and broken, the particles become smaller, the surface area increases, and the contact area with water increases, thereby accelerating the dissolution rate, which helps the medicine to react with pollutants in the water faster and improve the purification efficiency.

[0035] The processing device also includes gear 1 29 and gear 2 210. Gear 1 29 is fixedly mounted on the bottom of the scraper rod 28, and gear 2 210 is rotatably mounted on the inner wall of the processing tank 8. Gear 1 29 is engaged with gear 2 210, and the rotation of gear 1 29 causes gear 2 210 to rotate.

[0036] The auxiliary device includes a tripod 30, a rotating shaft 31, a stirring blade 32 and a stirring plate 33. The tripod 30 is fixedly mounted on the inner wall of gear 2 210, the rotating shaft 31 is fixedly mounted on the inner wall of the tripod 30, and a reciprocating spiral groove is provided on the circumferential surface of the rotating shaft 31. The stirring blade 32 is fixedly mounted on the circumferential surface of the rotating shaft 31. The reagent and the water are fully mixed by the rotating stirring blade 32. The stirring plate 33 is threadedly mounted on the circumferential surface of the rotating shaft 31. The movement of the stirring plate 33 allows the reagent deposited at the bottom of the inner wall of the treatment tank 8 to be drained into the working range of the stirring blade 32.

[0037] The auxiliary device also includes a fixed plate 34, a brush 35, an output port 36 and a drain port 37. The fixed plate 34 is fixedly mounted on the top of the rotating shaft 31. The brush 35 is arranged on the surface of the fixed plate 34 close to the tripod 30. The output port 36 is arranged on the circumferential surface of the treatment tank 8. The drain port 37 is arranged on the circumferential surface of the treatment tank 8. The output port 36 is connected to the treatment tank 8. The circumferential surface of the output port 36 is provided with a valve 1. The drain port 37 is connected to the treatment tank 8. The circumferential surface of the drain port 37 is provided with a valve 2. The impurities on the surface are brushed off by the contact between the brush 35 and the tripod 30 to prevent these impurities from accumulating and causing blockage at the connection between the rotating shaft 31 and the tripod 30. The impurities dropped from the filter plate 22 are discharged through the drain port 37, and the mixed water is discharged through the output port 36.

[0038] The filter plate 22 is then pulled back to the filter housing 22, and the filter housing 22 is then pulled back to the filter housing 22. The filter housing 22 is then pulled back to the filter housing 22, and the filter housing 22 is then pulled back to the filter housing 22. When the rotating rod 21 is reversed by accidental touch, the ratchet wheel 23 will contact the non-inclined surface of the limit rod 24. At this time, the ratchet wheel 23 cannot rotate, that is, the rotating rod 21 cannot rotate. In this way, the filter plate 22 is prevented from being accidentally touched. When adding medicine to the medicine tank 25, the crushing piece 26 is driven to rotate by the rotation of the round rod 15. The rotation of the crushing piece 26 will break up the agglomerated medicine. The rotation of the round rod 15 drives the scraper 28 to rotate. The broken medicine is collected by the scraper 28 and enters the processing tank 8 through the conveying pipe 27. The rotation of the scraper 28 drives the gear 1 29 to rotate. The rotation of the gear 1 29 drives the gear 2 210 to rotate. After the medicine is stirred and broken, the particles become smaller, the surface area increases, and the contact area with water increases, thereby accelerating the dissolution rate, which helps the medicine to react with the pollutants in the water faster and improve the purification efficiency.

[0039] The rotation of gear 210 drives the tripod 30 to rotate, and the rotation of the tripod 30 drives the rotating shaft 31 to rotate. The rotation of the rotating shaft 31 drives the stirring blade 32 to rotate, and the rotating stirring blade 32 is used to mix the medicine with the water. The rotation of the rotating shaft 31 drives the reciprocating spiral groove to rotate. The rotation of the reciprocating spiral groove causes the stirring plate 33 to move up and down. The movement of the stirring plate 33 causes the medicine deposited on the bottom of the inner wall of the processing tank 8 to be drained into the working range of the stirring blade 32. During the rotation of the tripod 30, there may be objects remaining on the top of the tripod 30 and unable to fall. At this time, the rotation of the rotating shaft 31 drives the fixed plate 34 to rotate, and the rotation of the fixed plate 34 drives the brush 35 to move. The brush 35 contacts the tripod 30 to brush off impurities on the surface, preventing these impurities from accumulating and causing blockage at the connection between the rotating shaft 31 and the tripod 30. The impurities dropped by the filter plate 22 are discharged through the sewage outlet 37, and the mixed water is discharged through the output port 36.

[0040] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A sponge city water purification device, comprising an ecological floating island (1), a water collection pipe (3) and a treatment tank (8), characterized in that: The water collecting pipe (3) is arranged below the ecological floating island (1), the treatment tank (8) is arranged below the water collecting pipe (3), and a collecting device, a treatment device and an auxiliary device are arranged below the ecological floating island (1); The collecting device comprises a culture plate (2), a fixed rod (4), a floating ball (5), a flow-discarding ball (6), a water tank (7), a water inlet (9), a baffle (10), an electric push rod (11), a connecting button (12), a circular groove block (13), a rotating motor (14) and a circular rod (15); the culture plate (2) is arranged on the top of the ecological floating island (1); ecological plants are arranged inside the culture plate (2); the fixed rod (4) is slidably mounted on the inner wall of the water collecting pipe (3); the floating ball (5) is fixedly mounted on the circumferential surface of the fixed rod (4); the flow-discarding ball (6) is fixedly mounted on the circumferential surface of the fixed rod (4); the water tank (7) is arranged on the top of the ecological floating island (1); the water inlet (9) is arranged on the inner wall of the treatment tank (8); The water inlet (9) is connected to the treatment tank (8), the baffle (10) is rotatably mounted on the inner wall of the water inlet (9), the fixed end of the electric push rod (11) is fixedly mounted on the surface of the water inlet (9), one side of the connecting button (12) is fixedly mounted on the output end of the electric push rod (11), the circular groove block (13) is fixedly mounted on the surface of the baffle (10) close to the electric push rod (11), the other side of the connecting button (12) is slidably mounted on the inner wall of the circular groove block (13), the fixed end of the rotating motor (14) is fixedly mounted on the top of the treatment tank (8), the round rod (15) is rotatably mounted on the surface of the treatment tank (8), and the round rod (15) is transmission-connected to the output end of the rotating motor (14) through a No. 1 belt; The bottom of the ecological floating island (1) is connected to a water collecting pipe (3), and the water collecting pipe (3) is connected to a water inlet (9); The processing device comprises a fixed block (20), a rotating rod (21) and a filter plate (22), wherein the fixed block (20) is fixedly inserted through the inner and outer walls of the processing tank (8), the rotating rod (21) is rotatably mounted on the inner wall of the fixed block (20), and the filter plate (22) is fixedly mounted on the surface of the rotating rod (21); The processing device further comprises a ratchet wheel (23) and a limiting rod (24), wherein the fixing button of the ratchet wheel (23) is mounted on the circumferential surface of the rotating rod (21), and the limiting rod (24) is slidably mounted on the surface of the fixing block (20), a spring No. 1 is provided between the limiting rod (24) and the fixing block (20), and the bottom of the limiting rod (24) is provided as an inclined surface; The processing device further comprises a medicine tank (25), a crushing piece (26), a conveying pipe (27) and a scraper rod (28), wherein the medicine tank (25) is fixedly mounted on the surface of the processing tank (8), the crushing piece (26) is fixedly mounted on the circumferential surface of the round rod (15), the conveying pipe (27) connects the medicine tank (25) and the processing tank (8), and the scraper rod (28) is fixedly mounted on the circumferential surface of the round rod (15); The processing device further includes a gear 1 (29) and a gear 2 (210), wherein the gear 1 (29) is fixedly mounted on the bottom of the scraper rod (28), and the gear 2 (210) is rotatably mounted on the inner wall of the processing tank (8), and the gear 1 (29) is meshed with the gear 2 (210); The auxiliary device comprises a tripod (30), a rotating shaft (31), a stirring blade (32) and a stirring plate (33), wherein the tripod (30) is fixedly mounted on the inner wall of the gear 2 (210), the rotating shaft (31) is fixedly mounted on the inner wall of the tripod (30), a reciprocating spiral groove is provided on the circumferential surface of the rotating shaft (31), the stirring blade (32) is fixedly mounted on the circumferential surface of the rotating shaft (31), and the stirring plate (33) is threadedly mounted on the circumferential surface of the rotating shaft (31).

2. A sponge city water purification device according to claim 1, characterized in that: The auxiliary device further comprises a fixing plate (34), a brush (35), an output port (36) and a drain port (37), wherein the fixing plate (34) is fixedly mounted on the top of the rotating shaft (31), the brush (35) is arranged on the surface of the fixing plate (34) close to the tripod (30), the output port (36) is arranged on the circumferential surface of the processing tank (8), the drain port (37) is arranged on the circumferential surface of the processing tank (8), the output port (36) is communicated with the processing tank (8), and the circumferential surface of the output port (36) is provided with a valve 1, the drain port (37) is communicated with the processing tank (8), and the circumferential surface of the drain port (37) is provided with a valve 2.

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