Urban and rural small and micro water body biological filter

Abstract

The utility model discloses a kind of urban and rural small micro water body biological filter, belong to sewage treatment technical field.It include aeration tank, a hollow internally arranged mounting frame is arranged in aeration tank, the upper surface of aeration tank is relatively fixedly installed with locating block, the opposite side of two locating blocks is fixedly connected with support box, mounting block is fixedly connected with mounting block on mounting frame, mounting block is fixedly connected with limit slide column on the side away from mounting frame, limit slide column is equipped with limit slide cylinder, limit slide cylinder and limit slide column are connected along the axial sliding, lifting mechanism is arranged in support box, lifting mechanism is used to drive limit slide cylinder to move up and down.The utility model can drive mounting frame, mounting pipe and aeration head to move up and out of aeration tank by starting rotating motor, so as to be convenient for the replacement of aeration head, so that aeration head does not need to climb into aeration tank to replace, so that aeration head is more convenient and fast, higher safety, reduce the difficulty of biological filter maintenance.

Description

Technical Field

[0001] This utility model relates to a biological filter for small urban and rural water bodies, belonging to the field of wastewater treatment technology. Background Technology

[0002] In urban and rural environmental governance, water quality improvement and ecological restoration of small water bodies are important aspects. Small water bodies in urban and rural areas, such as ditches, streams, and ponds, are widely distributed and closely connected with residents' lives. Their water quality directly affects the surrounding ecological environment and the quality of life of residents. To effectively control pollution in small water bodies in urban and rural areas, biological filters have advantages such as good treatment effect, stable operation, and strong resistance to shock loads, making them particularly suitable for the treatment needs of small water bodies in urban and rural areas.

[0003] In the operation of a biological filter, the aeration system is a key component. Aeration provides the necessary dissolved oxygen for microorganisms by forcibly introducing air into the wastewater to support their aerobic metabolic activities. Sufficient dissolved oxygen can promote the decomposition of organic matter and nitrification of ammonia nitrogen by microorganisms, thereby significantly improving the removal efficiency of pollutants. Traditional aeration methods mostly use fixed aeration heads, which distribute air evenly into the tank through pipes. The aeration heads are submerged in wastewater for a long time and are prone to clogging or damage, resulting in a decrease in aeration efficiency and requiring manual replacement. Since the aeration heads are usually fixed at the bottom of the tank, replacement requires manual entry into the tank, which is not only labor-intensive, but also poses safety hazards, especially in deep tanks or with poor water quality, thus increasing the difficulty of maintaining the biological filter. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a biological filter for small urban and rural water bodies. It solves the problem that in the prior art, the aeration heads are usually fixed at the bottom of the pool, and replacement requires manual entry into the pool, which is not only labor-intensive, but also poses safety hazards, especially in deep pools or in cases of poor water quality, thus increasing the difficulty of maintaining the biological filter.

[0005] The technical problem to be solved by this utility model is achieved by the following technical solution: a biological filter for small urban and rural water bodies, including an aeration tank, an installation frame with a hollow interior is provided in the aeration tank, a positioning block is fixedly installed on the upper surface of the aeration tank, a support box is fixedly connected to the opposite sides of the two positioning blocks, an installation block is fixedly connected to the installation frame, a limiting slide column is fixedly connected to the side of the installation block away from the installation frame, a limiting slide cylinder is provided on the outer sleeve of the limiting slide column, and the limiting slide cylinder and the limiting slide column are slidably connected along the axial direction;

[0006] The support box is equipped with a lifting mechanism, which is used to drive the limit slide to move up and down;

[0007] The positioning block is equipped with a drive mechanism, which is used to drive the lifting mechanism to operate.

[0008] The limiting slide is equipped with a positioning mechanism, which is used to fix the limiting slide post inside the limiting slide.

[0009] The aeration tank is equipped with multiple installation pipes, each with an aeration head. An installation mechanism is installed on the installation frame to mount the installation pipes onto the frame.

[0010] By adopting the above technical solution, when the starting motor drives the worm gear to rotate, the worm gear drives the worm wheel meshing with it to rotate. The worm wheel synchronously drives the rotating rod and the take-up reel to rotate. During the rotation of the take-up reel, the pull rope wound on it is wound up or released. When the take-up reel winds up the pull rope, the pull rope drives the limiting slide cylinder to move upward, thereby synchronously driving the limiting slide column, mounting block, mounting frame, mounting pipe, and aeration head to move upward. When the take-up reel drives the pull rope to release, the limiting slide column, mounting block, mounting frame, mounting pipe, and aeration head move downward under their own gravity. Thus, starting the rotating motor can drive the mounting frame, mounting pipe, and aeration head upward out of the aeration tank, which facilitates the replacement of the aeration head. This eliminates the need to climb into the aeration tank to replace the aeration head, making the replacement of the aeration head more convenient, faster, and safer, thereby reducing the difficulty of maintaining the biological filter.

[0011] The present invention is further configured such that: the lowering mechanism includes a rotating rod rotatably disposed between the inner walls of opposite sides of the support box, a take-up wheel is fixedly connected to the rotating rod, a pull rope is wound on the take-up wheel, and the end of the pull rope away from the take-up wheel passes through the support box and is fixedly connected to the upper side of the limiting slide cylinder.

[0012] The drive mechanism includes a rotating motor fixedly installed on the side of the positioning block away from the support box. The output end of the rotating motor passes through the support box and is powered by a worm gear. A worm wheel that meshes with the worm gear is fixedly connected to the rotating rod.

[0013] Vertical blocks are fixedly connected to the inner walls of both sides of the aeration tank. The two vertical blocks are arranged opposite each other, and slide rail grooves are opened on the opposite sides of the two vertical blocks. A support frame is fixedly installed on the limiting slide cylinder, and a limiting wheel that abuts against the slide rail groove is rotatably connected to the support frame.

[0014] By adopting the above technical solution, the limiting wheel is slidably connected in the slide rail groove to restrict the installation frame, so that the installation frame can only move up and down, and avoids the installation frame from swaying back and forth or left and right during the up and down movement.

[0015] When the start-up motor drives the worm gear to rotate, the worm gear drives the meshing worm wheel to rotate. The worm wheel synchronously drives the rotating rod and the take-up reel to rotate. During the rotation of the take-up reel, the pull rope wound on it is either wound up or released. When the take-up reel winds up the pull rope, the pull rope drives the limiting slide cylinder to move upward, thereby synchronously driving the limiting slide column, mounting block, mounting frame, mounting pipe, and aeration head to move upward. When the take-up reel drives the pull rope to release, the limiting slide column, mounting block, mounting frame, mounting pipe, and aeration head move downward under their own weight. Thus, starting the start-up motor can drive the mounting frame, mounting pipe, and aeration head upward out of the aeration tank, making it easier to replace the aeration head. This eliminates the need to climb into the aeration tank to replace the aeration head, making replacement more convenient, faster, and safer, thereby reducing the difficulty of maintaining the biological filter.

[0016] The present invention is further configured such that: the positioning mechanism includes a positioning groove formed on the limiting slide column, a slider inserted into the positioning groove is slidably connected to the limiting slide cylinder, a positioning block is fixedly connected to the side of the slider away from the limiting slide column, and a spring is fixedly installed between the positioning block and the limiting slide cylinder.

[0017] By adopting the above technical solution, since the limiting slide cylinder is slidably sleeved on the limiting slide column, and the limiting slide column is cylindrical and the limiting slide cylinder is slidably connected to the mounting block, the limiting slide cylinder and the mounting block cooperate to restrict the limiting slide column, so that the limiting slide column can only move along the axis of the limiting slide cylinder and will not move up and down or rotate. Furthermore, the slider inserted into the positioning groove has a fixing effect on the limiting slide column, so that the limiting slide column cannot slide in the limiting slide cylinder, thereby preventing the mounting frame from swaying back and forth in the aeration tank, and also ensuring the stability and safety of the mounting frame moving up and down.

[0018] When the rotating motor is started, it moves the mounting frame upward out of the aeration tank. Pulling out the positioning block causes the slider to slide out of the positioning groove. At this time, the spring is stretched, releasing the positioning of the limiting slide column. Pulling out the mounting frame can then move the limiting slide column out of the limiting slide cylinder. At this point, the lower surface of the mounting frame slides into contact with the upper surface of the aeration tank, providing some support to the mounting frame. This causes the aeration head located in the middle to gradually move towards the edge of the aeration tank, facilitating the replacement of the aeration head in the middle and making the replacement of the aeration head more labor-saving and efficient.

[0019] The present invention is further configured as follows: the installation mechanism includes a threaded pipe fixedly connected to the inner wall of one side of the installation frame and communicating with the interior of the installation frame; a first thread is provided at the end of the installation pipe near the threaded pipe; a positioning pipe communicating with the interior of the installation frame is fixedly connected to the inner wall of the side of the installation frame opposite to the positioning cylinder; the end of the installation pipe away from the positioning cylinder is slidably inserted into the positioning pipe; a positioning cylinder is threadedly connected to the first thread; the end of the positioning cylinder is threadedly connected to the threaded pipe; a limit ring is fixedly connected to the installation pipe; a rubber ring is fixedly connected to the side of the limit ring near the positioning pipe; an aeration pipe communicating with the interior of the installation frame is fixedly installed on the installation frame; and a drain pipe communicating with the interior of the aeration tank is fixedly connected to one side of the aeration tank.

[0020] By adopting the above technical solution, during installation, first insert the end of the installation tube furthest from the first thread into the positioning tube, so that the end of the positioning tube abuts against the rubber ring. Then, grip the installation tube tightly and rotate the positioning cylinder, so that the positioning cylinder moves along the axis of the installation tube during rotation. During the rotation, the positioning cylinder is threadedly connected to the threaded tube. At this time, grip the positioning cylinder to fix it. Then rotate the installation tube, so that the installation tube moves away from the positioning cylinder during rotation. During this process, the rubber ring and the limiting ring are driven, so that the rubber ring abuts tightly against the positioning tube, so that the end of the installation tube inserted into the positioning tube is sealed. At this time, the positioning cylinder is threadedly connected to the threaded tube and the first thread, connecting the other end of the installation tube to the threaded tube. When the filtered sewage injected into the aeration tank submerges the aeration head, installation tube, and installation frame, air is injected into the installation frame through the aeration pipe. The air is discharged through the installation frame, installation tube, and aeration head, realizing the introduction of air into the sewage, providing the necessary dissolved oxygen for microorganisms to support their metabolic activities, thereby achieving the biological purification of sewage.

[0021] When the installation tube or aeration head is blocked or damaged, grip the installation tube and then rotate the positioning cylinder to disengage the positioning cylinder from the first thread, thereby pulling the end of the installation tube out of the positioning tube, completing the disassembly of the installation tube and aeration head. Disassembly is convenient and quick, which facilitates the replacement of the installation tube and aeration head.

[0022] The beneficial effects of this utility model are: starting the rotating motor can drive the mounting frame, mounting pipe and aeration head to move upward out of the aeration tank, thereby facilitating the replacement of the aeration head. This eliminates the need to climb into the aeration tank to replace the aeration head, making the replacement of the aeration head more convenient, faster and safer, and reducing the difficulty of maintaining the biological filter. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the rotating rod structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the mounting frame structure of this utility model;

[0026] Figure 4 This is a schematic diagram of the vertical block structure of this utility model;

[0027] Figure 5 For the present utility model Figure 1 Enlarged view of point A;

[0028] Figure 6 This is a schematic diagram of the threaded pipe structure of this utility model.

[0029] In the picture:

[0030] 1. Aeration tank; 2. Drain pipe; 3. Positioning block; 4. Support box; 5. Rotating motor; 6. Mounting frame; 7. Mounting pipe; 8. Aeration head; 9. Take-up reel; 10. Worm gear; 11. Worm; 12. Rotating rod; 13. Pull rope; 14. Vertical block; 15. Limiting wheel; 16. Slide rail groove; 17. Support frame; 18. Limiting slide cylinder; 19. Mounting block; 20. Limiting slide column; 21. Positioning groove; 22. Positioning block; 23. Sliding block; 24. Spring; 25. Positioning tube; 26. Limiting ring; 27. Rubber ring; 28. First thread; 29. ​​Positioning cylinder; 30. Threaded pipe; 31. Aeration pipe. Detailed Implementation

[0031] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this utility model, the following details... Figure 1-6 As shown, this utility model is further illustrated.

[0032] like Figure 1-6 As shown, this utility model is a biological filter for small urban and rural water bodies, including an aeration tank 1 with a hollow mounting frame 6 inside. Positioning blocks 3 are fixedly mounted on the upper surface of the aeration tank 1. Support boxes 4 are fixedly connected to opposite sides of the two positioning blocks 3. Mounting blocks 19 are fixedly connected to the mounting frame 6. A limiting slide column 20 is fixedly connected to the side of the mounting block 19 away from the mounting frame 6. A limiting slide cylinder 18 is fitted over the limiting slide column 20, and the limiting slide cylinder 18 and the limiting slide column 20 are slidably connected axially. A sliding groove is formed through the limiting slide cylinder 18, and the mounting block 19 is slidably connected to the sliding groove. A lifting mechanism is provided inside the support box 4 to move the limiting slide cylinder 18 up and down. A driving mechanism is provided on the positioning blocks 3 to drive the lifting mechanism. A positioning mechanism is provided on the limiting slide cylinder 18 to fix the limiting slide column 20 inside the limiting slide cylinder 18.

[0033] like Figure 3As shown, the aeration tank 1 is equipped with multiple installation pipes 7, and aeration heads 8 are installed on the installation pipes 7. The installation frame 6 is equipped with an installation mechanism, which is used to install the installation pipes 7 on the installation frame 6.

[0034] Under the action of the installation mechanism, the installation pipe 7 can be installed on the installation frame 6, so that the installation frame 6 and the installation pipe 7 are connected. When the installation frame 6 is at the bottom of the aeration tank 1, the filtered sewage is injected into the aeration tank 1. By injecting air into the installation frame 6, the air is circulated into the filtered sewage through the installation pipe 7 and the aeration head 8, providing the necessary dissolved oxygen for the microorganisms to support their metabolic activities, thereby achieving biological purification of sewage. When it is necessary to replace the installation pipe 7 and the aeration head 8, the drive mechanism is started to drive the lifting mechanism to rotate. During the rotation of the lifting mechanism, the installation frame 6 moves up and down. When the installation frame 6 moves upward out of the aeration tank 1, the installation pipe 7 and the aeration head 8 move upward out of the aeration tank 1, which facilitates the replacement of the aeration head 8. The replacement of the aeration head 8 does not require climbing into the aeration tank 1, making the replacement of the aeration head 8 more convenient, faster and safer, thereby reducing the difficulty of maintaining the biological filter.

[0035] like Figure 1-4 As shown, the lifting mechanism includes a rotating rod 12 rotatably disposed between the inner walls of opposite sides of the support box 4. A take-up reel 9 is fixedly connected to the rotating rod 12, and a pull rope 13 is wound on the take-up reel 9. A fixing groove is provided through the lower surface of the support box 4. The inner end of the pull rope 13 is fixedly connected to the take-up reel 9. The end of the pull rope 13 away from the take-up reel 9 extends out of the support box 4 through the fixing groove and is fixedly connected to the upper side of the limiting slide cylinder 18. The end of the pull rope 13 away from the take-up reel 9 extends out of the support box 4 and is fixedly connected to the upper side of the limiting slide cylinder 18.

[0036] like Figure 1-2 As shown, the drive mechanism includes a rotating motor 5 fixedly installed on the side of the positioning block 3 away from the support box 4. The output end of the rotating motor 5 passes through the support box 4 and is powered by a worm gear 11. A worm wheel 10 that meshes with the worm gear 11 is fixedly connected to the rotating rod 12.

[0037] like Figure 1-2 As shown, vertical blocks 14 are fixedly connected to the inner walls of opposite sides of the aeration tank 1. The two vertical blocks 14 are arranged opposite each other, and slide rail grooves 16 are opened on the opposite sides of the two vertical blocks 14. A support frame 17 is fixedly installed on the limiting slide cylinder 18. A limiting wheel 15 that abuts against the slide rail groove 16 is rotatably connected to the support frame 17. The front and rear sides of the limiting wheel 15 are slidably connected to the inner walls of opposite sides of the slide rail groove 16.

[0038] The limiting wheel 15 is slidably connected in the slide rail groove 16 to restrict the installation frame 6, so that the installation frame 6 can only move up and down, and avoids the installation frame 6 from swaying back and forth or left and right during the up and down movement.

[0039] When the starting motor 5 drives the worm gear 11 to rotate, the worm gear 11 drives the worm wheel 10 meshing with it to rotate. The worm wheel 10 synchronously drives the rotating rod 12 and the take-up reel 9 to rotate. During the rotation of the take-up reel 9, it winds up or releases the pull rope 13 wound on it. When the take-up reel 9 winds up the pull rope 13, the pull rope 13 drives the limiting slide cylinder 18 to move upward, thereby synchronously driving the limiting slide column 20, the mounting block 19, the mounting frame 6, the mounting pipe 7, and the aerator head 8 to move upward. The aeration head moves upward; when the take-up reel 9 drives the pull rope 13 to release, it moves downward under the weight of the limit slide column 20, mounting block 19, mounting frame 6, mounting pipe 7 and aeration head 8. This starts the rotating motor 5, which can drive the mounting frame 6, mounting pipe 7 and aeration head 8 upward out of the aeration tank 1. This makes it easier to replace the aeration head 8, so that it does not need to climb into the aeration tank 1 to replace the aeration head 8. This makes replacing the aeration head 8 more convenient, faster and safer, and reduces the difficulty of maintaining the biological filter.

[0040] like Figure 4-6 As shown, the positioning mechanism includes a positioning groove 21 formed on the limiting slide post 20, a slider 23 slidably connected to the limiting slide cylinder 18 and inserted into the positioning groove 21, a positioning block 22 fixedly connected to the side of the slider 23 away from the limiting slide post 20, and a spring 24 fixedly installed between the positioning block 22 and the limiting slide cylinder 18.

[0041] Because the limiting slide cylinder 18 is slidably sleeved on the limiting slide column 20, and the limiting slide column 20 is cylindrical and the limiting slide cylinder 18 is slidably connected to the mounting block 19, the limiting slide cylinder 18 and the mounting block 19 cooperate to restrict the limiting slide column 20, so that the limiting slide column 20 can only move along the axis of the limiting slide cylinder 18 and will not move up or down or rotate. Furthermore, the slider 23 is inserted into the positioning groove 21 to fix the limiting slide column 20, so that the limiting slide column 20 cannot slide in the limiting slide cylinder 18, thereby preventing the mounting frame 6 from swaying back and forth in the aeration tank 1, and also ensuring the stability and safety of the mounting frame 6 moving up and down.

[0042] When the rotating motor 5 is started, it drives the mounting frame 6 to move upward out of the aeration tank 1. The positioning block 22 is pulled out, causing the positioning block 22 to drive the slider 23 to slide out of the positioning groove 21. At this time, the spring 24 is stretched, and the positioning of the limiting slide column 20 is released. Pulling the mounting frame 6 can drive the limiting slide column 20 to slide out of the limiting slide cylinder 18. At this time, the lower surface of the mounting frame 6 is slidably connected to the upper surface of the aeration tank 1. The aeration tank 1 provides some support for the mounting frame 6. At this time, the aeration head 8 located in the middle position is gradually moved towards the edge of the aeration tank 1, which facilitates the replacement of the aeration head 8 located in the middle, making the replacement of the aeration head 8 more labor-saving and efficient.

[0043] like Figure 3-6 As shown, the installation mechanism includes a threaded pipe 30 fixedly connected to the inner wall of one side of the installation frame 6 and communicating with the interior of the installation frame 6. The end of the installation pipe 7 near the threaded pipe 30 is provided with a first thread 28, which can be matched with the thread of the threaded pipe 30. The inner wall of the installation frame 6 opposite to the positioning cylinder 29 is fixedly connected to a positioning pipe 25 communicating with the interior of the installation frame 6. The end of the installation pipe 7 away from the positioning cylinder 29 is slidably inserted into the positioning pipe 25. The positioning cylinder 29 is threadedly connected to the first thread 28. The end of the positioning cylinder 29 away from the positioning pipe 25 is threadedly connected to the threaded pipe 30. A limit ring 26 is fixedly connected to the installation pipe 7. A rubber ring 27 is fixedly connected to the side of the limit ring 26 near the positioning pipe 25. An aeration pipe 31 communicating with the interior of the installation frame 6 is fixedly installed on the installation frame 6. A drain pipe 2 communicating with the interior of the aeration tank 1 is fixedly connected to one side of the aeration tank 1. A valve is provided on the drain pipe 2.

[0044] During installation, first insert the end of the installation tube 7 away from the first thread 28 into the positioning tube 25, so that the end of the positioning tube 25 abuts against the rubber ring 27. Then, grip the installation tube 7 and rotate the positioning cylinder 29, causing the positioning cylinder 29 to move along the axis of the installation tube 7 during rotation. During rotation, the positioning cylinder 29 is threadedly connected to the threaded tube 30. At this point, grip the positioning cylinder 29 to fix it in place. Then, rotate the installation tube 7, causing it to move away from the positioning cylinder 29 during rotation. During this process, the rubber ring 27 and the limiting ring 26 are moved, causing the rubber ring 27 to be tightly attached to the positioning tube 25. The abutment allows the end of the installation pipe 7 inserted into the positioning pipe 25 to be sealed. At this time, the positioning cylinder 29 is threadedly connected to the threaded pipe 30 and the first thread 28 to connect the other end of the installation pipe 7 to the threaded pipe 30. When the filtered sewage injected into the aeration tank 1 covers the aeration head 8, the installation pipe 7 and the installation frame 6, air is injected into the installation frame 6 through the aeration pipe 31. The air is discharged through the installation frame 6, the installation pipe 7 and the aeration head 8, thus introducing air into the filtered sewage and providing the necessary dissolved oxygen for the microorganisms to support their metabolic activities, thereby achieving the biological purification of sewage.

[0045] When the installation tube 7 or the aeration head 8 is blocked or damaged, hold the installation tube 7 tightly and then rotate the positioning cylinder 29 so that the positioning cylinder 29 disengages from the first thread 28, thereby pulling the end of the installation tube 7 out of the positioning tube 25, completing the disassembly of the installation tube 7 and the aeration head 8. The disassembly is convenient and quick, which facilitates the replacement of the installation tube 7 and the aeration head 8.

[0046] In this design, the threads between the threaded tube 30 and the positioning cylinder 29, and between the first thread 28 and the positioning cylinder 29, are strong sealing threads, such as 55° sealing pipe threads, which makes the sealing between the mounting tube 7 and the threaded tube 30 stronger. A sealing ring is fixedly connected to the inner wall of the positioning tube 25, which is also used to increase the sealing between the mounting tube 7 and the positioning tube 25.

[0047] In this scheme, a hose is fixedly connected to the upper end of the aeration pipe 31, and an air pump is installed outside the aeration tank 1. The output end of the air pump is fixedly connected to the end of the hose away from the aeration pipe 31.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A biological filter for small urban and rural water bodies, comprising an aeration tank (1), characterized in that: The aeration tank (1) is provided with a hollow mounting frame (6). Positioning blocks (3) are fixedly installed on the upper surface of the aeration tank (1). Support boxes (4) are fixedly connected to the opposite sides of the two positioning blocks (3). Mounting blocks (19) are fixedly connected to the mounting frame (6). A limiting slide column (20) is fixedly connected to the side of the mounting block (19) away from the mounting frame (6). A limiting slide cylinder (18) is provided on the outer sleeve of the limiting slide column (20). The limiting slide cylinder (18) and the limiting slide column (20) are slidably connected along the axial direction. The support box (4) is equipped with a lifting mechanism, which is used to drive the limiting slide (18) to move up and down; The positioning block (3) is equipped with a drive mechanism, which is used to drive the lifting mechanism to operate; A positioning mechanism is provided on the limiting slide cylinder (18), which is used to fix the limiting slide column (20) inside the limiting slide cylinder (18); The aeration tank (1) is equipped with multiple installation pipes (7), and an aeration head (8) is installed on the installation pipe (7). The installation frame (6) is equipped with an installation mechanism, which is used to install the installation pipe (7) on the installation frame (6).

2. The small and micro urban and rural water body biofilter according to claim 1, characterized in that: The lifting mechanism includes a rotating rod (12) rotatably disposed between the inner walls of opposite sides of the support box (4). A take-up reel (9) is fixedly connected to the rotating rod (12). A pull rope (13) is wound on the take-up reel (9). The end of the pull rope (13) away from the take-up reel (9) passes through the support box (4) and is fixedly connected to the upper side of the limiting slide cylinder (18).

3. The small and micro urban-rural water body biofilter according to claim 2, characterized in that: The drive mechanism includes a rotating motor (5) fixedly installed on the side of the positioning block (3) away from the support box (4). The output end of the rotating motor (5) passes through the support box (4) and is powered by a worm gear (11). A worm wheel (10) that meshes with the worm gear (11) is fixedly connected to the rotating rod (12).

4. The small and micro urban and rural water body biofilter according to claim 1, characterized in that: The aeration tank (1) has vertical blocks (14) fixedly connected to the inner walls on both sides. The two vertical blocks (14) are arranged opposite each other. Slide rail grooves (16) are opened on the opposite sides of the two vertical blocks (14). A support frame (17) is fixedly installed on the limiting slide cylinder (18). A limiting wheel (15) that abuts against the slide rail groove (16) is rotatably connected to the support frame (17).

5. The urban and rural small and micro water body biofilter according to claim 1, characterized in that: The positioning mechanism includes a positioning groove (21) on the limiting slide column (20), a slider (23) inserted into the positioning groove (21) is slidably connected on the limiting slide cylinder (18), a positioning block (22) is fixedly connected to the side of the slider (23) away from the limiting slide column (20), and a spring (24) is fixedly installed between the positioning block (22) and the limiting slide cylinder (18).

6. The small and micro urban and rural water body biofilter according to claim 1, characterized in that: The installation mechanism includes a threaded pipe (30) fixedly connected to the inner wall of one side of the installation frame (6) and communicating with the interior of the installation frame (6). The end of the installation pipe (7) near the threaded pipe (30) is provided with a first thread (28). The inner wall of the installation frame (6) opposite to the positioning cylinder (29) is fixedly connected to a positioning pipe (25) communicating with the interior of the installation frame (6). The end of the installation pipe (7) away from the positioning cylinder (29) is slidably inserted into the positioning pipe (25). The positioning cylinder (29) is threadedly connected to the first thread (28). The end of the positioning cylinder (29) is threadedly connected to the threaded pipe (30). A limit ring (26) is fixedly connected to the installation pipe (7). A rubber ring (27) is fixedly connected to the side of the limit ring (26) near the positioning pipe (25). An aeration pipe (31) communicating with the interior of the installation frame (6) is fixedly installed on the installation frame (6). A drain pipe (2) communicating with the interior of the aeration tank (1) is fixedly connected to one side of the aeration tank (1).

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