Tail water comprehensive treatment device for eel culture

Abstract

The utility model relates to the technical field of tail water treatment equipment, in particular to a tail water comprehensive treatment device for eel culture, which comprises a fiber turntable filter body, a filter structure is arranged on the fiber turntable filter body, a connecting pipe is rotatably connected onto the fiber turntable filter body, and a plurality of mounting rings are mounted on the connecting pipe. A plurality of connecting rods are fixedly connected to the mounting ring, filter cloth is mounted on the connecting rods through a mounting frame, an adjusting frame is slidably connected to the fiber turntable filter body, an adjusting rod is slidably connected to the adjusting frame, a mounting rod is rotatably connected to the adjusting rod, a first screw rod is rotatably connected to the mounting rod, and two clamping plates are slidably connected to the mounting rod; and two fixing grooves are formed in the mounting frame. The adjusting rod ascends to drive the mounting rod and the mounting frame to move upwards, then the mounting rod is rotated to rotate the mounting frame to the outer side, the filter cloth is convenient to replace, after replacement is completed, the mounting frame is clamped through the clamping plates, the mounting rod descends, mounting is completed, filter cloth replacement is achieved, and the replacement efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of wastewater treatment devices, specifically a comprehensive wastewater treatment device for eel farming. Background Technology

[0002] During eel farming, a large amount of wastewater containing pollutants such as suspended solids, organic matter, and ammonia nitrogen is generated. Direct discharge of this wastewater would severely pollute the surrounding aquatic environment. Therefore, fiber disc filters are commonly used to treat the wastewater to effectively remove residual suspended solids and other impurities.

[0003] However, in existing fiber disc filters, multiple filter discs are typically densely arranged on a rotatable connecting pipe. This dense arrangement results in extremely limited internal space. When filter cloth replacement is needed, operators find it difficult to maneuver within this confined space, making the removal and installation of new filter cloth exceptionally challenging. This not only significantly reduces the ease of filter cloth replacement but also leads to low overall maintenance efficiency.

[0004] Therefore, it is necessary to design a wastewater treatment device that facilitates the disassembly and assembly of the filter cloth. Utility Model Content

[0005] Based on this, this solution provides a comprehensive wastewater treatment device for eel farming. By raising the adjusting rod, the mounting rod and mounting frame are moved upward. Then, by rotating the mounting rod, the mounting frame is turned to the outside to facilitate filter cloth replacement. After replacement, the mounting frame is clamped by the clamping plate, and the mounting rod is lowered to complete the installation, realizing automatic filter cloth replacement, improving replacement efficiency and ease of operation.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0007] A wastewater treatment device for eel farming includes a fiber disc filter body with a filtration structure. The filtration structure includes a connecting pipe rotatably connected to the fiber disc filter body. Multiple mounting rings are installed on the connecting pipe, and multiple connecting rods are fixedly connected to the mounting rings. Filter cloth is mounted on the connecting rods via a mounting frame. The mounting frame is lifted by a lifting structure, which includes an adjusting frame. The adjusting frame is slidably connected to the fiber disc filter body, and an adjusting rod is slidably connected to the adjusting frame. An installation rod is rotatably connected to the adjusting rod, and a first lead screw is rotatably connected to the installation rod. Two clamping plates are slidably connected to the installation rod, and the clamping plates are threadedly connected to the first lead screw. The mounting frame has two fixing grooves.

[0008] Optionally, in one embodiment of the present invention, two slide rods are fixedly connected to the mounting frame, the slide rods are slidably connected to the connecting rod, a third motor is installed on the fiber disc filter body, and the connecting pipe is fixedly connected to the output shaft of the third motor.

[0009] Optionally, in one embodiment of the present invention, an installation shaft is fixedly connected to the installation rod, the installation shaft is rotatably connected to the adjustment rod, a limit rod is fixedly connected to the installation rod, the limit rod is slidably connected to the adjustment frame, a hydraulic rod is installed on the adjustment frame, the adjustment rod is fixedly connected to the telescopic end of the hydraulic rod, a first motor is installed on the installation rod, the first lead screw is fixedly connected to the output shaft of the first motor, and a guide groove is provided on the installation rod for use with the clamping plate.

[0010] Optionally, in one embodiment of the present invention, the adjusting frame is adjusted by an adjusting structure, the adjusting structure including a second lead screw, the second lead screw being rotatably connected to the fiber disc filter body, and the mounting frame being threadedly connected to the second lead screw.

[0011] Optionally, in one embodiment of the present invention, a guide plate is fixedly connected to the fiber disc filter body, the adjusting frame is slidably connected to the guide plate, a second motor is installed on the fiber disc filter body, and the second lead screw is fixedly connected to the output shaft of the second motor.

[0012] Optionally, in one embodiment of the present invention, the mounting frame is mounted on the connecting rod by a mounting structure, the mounting structure including mounting blocks, two mounting blocks being slidably connected on the connecting rod, and the mounting blocks engaging with the sliding rod.

[0013] Optionally, in one embodiment of the present invention, the mounting block is provided with an inclined groove, a driving block is slidably connected to the mounting block, a guide post is fixedly connected inside the connecting rod, a fixed rod is slidably connected to the guide post, and the two driving blocks are fixedly connected to the fixed rod.

[0014] Optionally, in one embodiment of the present invention, a third lead screw is rotatably connected to the connecting rod, and the fixing rod is threadedly connected to the third lead screw.

[0015] Optionally, in one embodiment of the present invention, a turntable is fixedly connected to the third lead screw, the turntable is provided with a plurality of through holes, a guide block is fixedly connected to the mounting block, a guide rod is fixedly connected inside the connecting rod, and the guide block and the guide rod are slidably connected.

[0016] Optionally, in one embodiment of the present invention, a drive shaft is rotatably connected to the mounting rod, a plug rod is fixedly connected to the drive shaft, the plug rod is inserted into a through hole, a fourth motor is installed inside the mounting rod, and the drive shaft is fixedly connected to the output shaft of the fourth motor.

[0017] Compared with the prior art, the wastewater treatment device for eel farming provided by this utility model has the following characteristics:

[0018] The first motor drives the bidirectional lead screw to control the clamping plate to clamp the fixing groove on the filter cloth mounting frame. Then, the hydraulic rod drives the adjusting rod and the mounting rod to lift the filter cloth module vertically, avoiding heavy and dangerous operations such as manual climbing and disassembling bolts.

[0019] When the limit rod is released from the adjustment frame, the mounting rod can rotate around the mounting axis, easily rotating the filter cloth module to a spacious area outside the equipment, providing a safe and convenient working area for replacement operations.

[0020] The mounting blocks, drive blocks, inclined grooves, and third lead screw are configured such that the third lead screw is driven by a drive turntable, and the inclined groove mechanism allows the two mounting blocks to move synchronously towards or away from each other, achieving rapid engagement and disengagement with the slide rod. Guide blocks and guide rods ensure smooth and precise movement. This enables quick and reliable connection and separation between the filter cloth module and the connecting rod, shortening replacement time.

[0021] It utilizes dense fiber bundles to form a high-efficiency filter layer, effectively intercepting solid impurities in the eel tail water; a differential pressure sensor monitors the filtration resistance, and automatically starts backwashing when the set value is reached, ensuring stable filtration efficiency and preventing filter cloth clogging; a third motor drives the connecting pipe and all filter cloths to rotate at low speed, combined with high-pressure water backwashing, ensuring that all filter cloth surfaces are cleaned evenly and thoroughly, reducing cleaning dead corners and extending the service life of the filter cloths; the scraper inside the machine further assists in removing the filter cake, improving the self-cleaning effect. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0024] Figure 2 This is a schematic diagram of the connection structure between the connecting pipe and the fiber disc filter body in Embodiment 1 of this utility model;

[0025] Figure 3 for Figure 2 The diagram shows an enlarged view of the structure of region A.

[0026] Figure 4 for Figure 3 The diagram shows an enlarged view of the structure of region B.

[0027] Figure 5 This is a schematic diagram of the connection structure between the adjustment frame and the fiber disc filter body in Embodiment 1 of this utility model;

[0028] Figure 6 This is a schematic diagram of the connection structure between the mounting rod and the adjusting rod in Embodiment 1 of this utility model;

[0029] Figure 7 This is a schematic diagram of the connection structure between the mounting frame and the connecting rod in Embodiment 1 of this utility model.

[0030] Reference numerals in the attached drawings: 1. Fiber rotary filter body; 2. Lifting structure; 3. Adjusting frame; 4. Adjusting rod; 5. Mounting rod; 6. First lead screw; 7. Clamping plate; 8. Guide groove; 9. Fixing groove; 10. Mounting shaft; 211. Hydraulic rod; 210. Limiting rod; 211. First motor; 3. Adjusting structure; 4. Second lead screw; 5. Second motor; 6. Guide plate; 7. Filter structure; 8. Connecting pipe; 9. Mounting ring; 10. Connecting rod; 11. Mounting frame; 12. Filter cloth; 13. Slide rod; 14. Third motor; 15. Mounting structure; 16. Mounting block; 17. Inclined groove; 18. Drive block; 19. Guide column; 20. Fixing rod; 20. Third lead screw; 10. Rotary disc; 11. Through hole; 22. Drive shaft; 33. Insert rod; 44. Fourth motor; 55. Guide block; 56. Guide rod. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. The technical solutions of the present invention will be further described below with reference to the accompanying drawings of the embodiments. The present invention is not limited to the specific embodiments described below.

[0032] It should be understood that the same or similar reference numerals in the accompanying drawings of the embodiments correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "front," "rear," "left," "right," "top," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0033] Example 1

[0034] Because existing wastewater treatment devices are inconvenient to disassemble and assemble when the filter cloth needs to be replaced due to limited space, a wastewater treatment device that facilitates filter cloth replacement has been designed. The specific solution is as follows:

[0035] like Figure 1-7 As shown, a wastewater treatment device for eel farming includes a fiber disc filter body 1. The fiber disc filter body 1 has a filter structure 4, which includes a connecting pipe 401. The connecting pipe 401 is rotatably connected to the fiber disc filter body 1. Multiple mounting rings 402 are installed on the connecting pipe 401. Multiple connecting rods 403 are fixedly connected to the mounting rings 402. Filter cloth 405 is installed on the connecting rods 403 via a mounting frame 404. The mounting frame 404 is lifted by a lifting structure 2, which includes an adjusting frame 201. The adjusting frame 201 is slidably connected to the fiber disc filter body 1. An adjusting rod 202 is slidably connected to the adjusting frame 201. An mounting rod 203 is rotatably connected to the adjusting rod 202. A first lead screw 204 is rotatably connected to the mounting rod 203. Two clamping plates 205 are slidably connected to the mounting rod 203, and the clamping plates 205 are threadedly connected to the first lead screw 204. The mounting frame 404 has two fixing grooves 207.

[0036] Two sliding rods 406 are fixedly connected to the mounting frame 404. The sliding rods 406 are slidably connected to the connecting rod 403. A third motor 407 is installed on the fiber disc filter body 1. The connecting pipe 401 is fixedly connected to the output shaft of the third motor 407. A mounting shaft 208 is fixedly connected to the mounting rod 203. The mounting shaft 208 is rotatably connected to the adjusting rod 202. A limit rod 210 is fixedly connected to the mounting rod 203. The limit rod 210 is slidably connected to the adjusting frame 201. A hydraulic rod 209 is installed on the adjusting frame 201. The adjusting rod 202 is fixedly connected to the telescopic end of the hydraulic rod 209. A first motor 211 is installed on the mounting rod 203. A first lead screw 204 is fixedly connected to the output shaft of the first motor 211. When the first motor 211 is started, it drives the first lead screw. When the first lead screw 204 rotates, since the threads at both ends of the first lead screw 204 are in opposite directions, the first lead screw 204 drives the two clamping plates 205 to slide towards each other through the threads, so that the clamping plates 205 engage with the fixing groove 207. Then, the hydraulic rod 209 is activated, and its telescopic end extends, driving the adjusting rod 202 to move upward. The adjusting rod 202 drives the mounting rod 203 to move upward, and the mounting rod 203 drives the mounting frame 404 to move upward. At the same time, the mounting rod 203 drives the limiting rod 210 to move upward. When the bottom of the limiting rod 210 is higher than the adjusting frame 201, the mounting rod 203 can be rotated through the mounting shaft 208, so that the mounting frame 404 can be rotated to the outside, which facilitates the replacement of the mounting frame 404 and the filter cloth 405. The mounting rod 203 is provided with a guide groove 206 that cooperates with the clamping plate 205.

[0037] The adjusting frame 201 is adjusted by the adjusting structure 3, which includes a second lead screw 301. The second lead screw 301 is rotatably connected to the fiber disc filter body 1. The mounting frame 404 is threadedly connected to the second lead screw 301. A guide plate 303 is fixedly connected to the fiber disc filter body 1. The adjusting frame 201 is slidably connected to the guide plate 303. A second motor 302 is installed on the fiber disc filter body 1. When the second motor 302 is started, its output shaft drives the second lead screw 301 to rotate. The second lead screw 301 drives the adjusting frame 201 to slide on the guide plate 303 through the thread. The guide plate 303 makes the sliding of the adjusting frame 201 more stable. The position of the adjusting frame 201 can be easily adjusted by the second lead screw 301 so that the filter cloth 405 at different positions can be replaced. The second lead screw 301 is fixedly connected to the output shaft of the second motor 302.

[0038] Mounting frame 404 is mounted on connecting rod 403 via mounting structure 5. Mounting structure 5 includes mounting blocks 501. Two mounting blocks 501 are slidably connected to connecting rod 403. Mounting blocks 501 engage with slide rod 406. Mounting blocks 501 are provided with inclined grooves 502. Driving blocks 503 are slidably connected to mounting blocks 501. Guide posts 504 are fixedly connected inside connecting rod 403. Fixed rods 505 are slidably connected to guide posts 504. Two driving blocks 503 are fixedly connected to fixed rods 505. A third lead screw 506 is rotatably connected to connecting rod 403. Fixed rods 505 are threadedly connected to the third lead screw 506. Fixed rods 505 drive the two driving blocks 503 to slide in the inclined grooves 502, driving the two mounting blocks 501 to move towards each other. When mounting blocks 501 slide, guide blocks 512 are on guide rods 513. The mounting block 501 slides upwards, making the sliding of the mounting block 501 more stable until the mounting block 501 is no longer engaged with the slide rod 406. The two mounting blocks 501 are driven to slide by the drive block 503, which can quickly complete the disassembly and assembly between the mounting frame 404 and the connecting rod 403, improving the replacement efficiency. A turntable 507 is fixedly connected to the third lead screw 506. The turntable 507 has multiple through holes 508. A guide block 512 is fixedly connected to the mounting block 501. A guide rod 513 is fixedly connected inside the connecting rod 403. The guide block 512 and the guide rod 513 are slidably connected. A drive shaft 509 is rotatably connected to the mounting rod 203. An insertion rod 510 is fixedly connected to the drive shaft 509. The insertion rod 510 is inserted into the through hole 508. A fourth motor 511 is installed inside the mounting rod 203. The drive shaft 509 is fixedly connected to the output shaft of the fourth motor 511.

[0039] Working principle:

[0040] The aquaculture wastewater flows into the fiber disc filter 1 through the inlet. The dense fiber bundles on the filter cloth 405 form an effective filtration layer, intercepting suspended eel feces, uneaten feed, and other solid impurities in the water. As filtration continues, impurities gradually accumulate on the surface of the filter cloth 405, forming a filter cake. At this time, the equipment uses a differential pressure sensor to monitor the filtration resistance. When the resistance reaches the set value, the backwashing system is automatically activated. During backwashing, high-pressure water is sprayed from the inside of the filter cloth 405 to the outside, peeling off and discharging the filter cake. At the same time, the third motor 407 is started, and its output shaft drives the connecting pipe 401 to rotate. The connecting pipe 401 then drives the filter cloth 405 to rotate. The filter cloth 405 rotates at a low speed, ensuring that all filter cloths 405 can be evenly backwashed. The filtered clean water flows out from the outlet at the bottom of the equipment, achieving the purification treatment of eel aquaculture wastewater.

[0041] In addition, the scraper inside the fiber disc filter body 1 scrapes off the filter cake on the surface of the filter cloth 405, further improving the cleaning effect. When the filter cloth 405 needs to be replaced, the fourth motor 511 is started, and its output shaft drives the transmission shaft 509 to rotate, which in turn drives the insertion rod 510 to rotate. The insertion rod 510 drives the turntable 507 to rotate, and the turntable 507 drives the third lead screw 506 to rotate. When the third lead screw 506 rotates, it drives the fixed rod 505 to move downward through the thread. The fixed rod 505 is at the guide post 50 Under the action of 4, the movement is smooth. At the same time, the fixed rod 505 drives the two drive blocks 503 to slide in the inclined groove 502, driving the two mounting blocks 501 to move towards each other. When the mounting blocks 501 slide, the guide block 512 slides on the guide rod 513, so that the mounting blocks 501 slide smoothly until the mounting blocks 501 are no longer engaged with the slide rod 406. By driving the two mounting blocks 501 to slide through the drive block 503, the disassembly and assembly between the mounting frame 404 and the connecting rod 403 can be quickly realized, improving the replacement efficiency. For efficiency, at this time, the first motor 211 is started, the first lead screw 204 rotates, and the first lead screw 204 drives the two clamping plates 205 to slide towards each other through the thread, so that the clamping plates 205 are engaged with the fixing groove 207. Then, the hydraulic rod 209 is started, and its telescopic end extends, causing the adjusting rod 202 to move upward. The adjusting rod 202 drives the mounting rod 203 to move upward, and the mounting rod 203 drives the mounting frame 404 to move upward. At the same time, the mounting rod 203 drives the limiting rod 210 to move upward. When the limiting rod 210... When the bottom is higher than the adjustment frame 201, the mounting rod 203 can be rotated via the mounting shaft 208 to rotate the mounting frame 404 to the outside, making it easier to replace the mounting frame 404 and filter cloth 405. During replacement, the mounting frame 404 is clamped by the clamping plate 205, and the mounting rod 203 is lowered to complete the installation. By adjusting the rod 202 in conjunction with the mounting rod 203 and the clamping plate 205, the mounting frame 404 can be lifted and rotated to one side, which can automatically replace the filter cloth 405, improving the replacement efficiency and ease of operation.

[0042] To replace the filter cloth 405 in different positions, start the second motor 302, which drives the second lead screw 301 to rotate. The second lead screw 301 drives the adjusting frame 201 to slide on the guide plate 303 through the thread. The guide plate 303 makes the adjusting frame 201 slide smoothly. The position of the adjusting frame 201 can be easily adjusted by the second lead screw 301 so that the filter cloth 405 in different positions can be replaced.

[0043] The wastewater treatment device in this solution uses a first motor to drive a bidirectional lead screw to control the clamping plate to tighten the fixing groove on the filter cloth mounting frame. Then, a hydraulic rod drives an adjusting rod and a mounting rod to vertically lift the filter cloth module. This avoids the heavy and dangerous operations such as manual climbing and disassembling bolts.

[0044] Once the filter cloth is raised to a sufficient height, the limit rod disengages from the adjustment frame. The entire mounting rod can then rotate around the mounting axis, easily moving the filter cloth module to a spacious area outside the equipment. This provides a safe and convenient working area for replacement operations.

[0045] The mounting blocks, drive blocks, inclined grooves, and third lead screw are configured such that the third lead screw is driven by a drive turntable, and the inclined groove mechanism enables the two mounting blocks to move synchronously towards or away from each other, achieving rapid engagement and disengagement with the slide rod. Guide blocks and guide rods ensure smooth and precise movement. This makes the connection and separation of the filter cloth module and connecting rod quick and reliable, significantly reducing replacement time.

[0046] It utilizes dense fiber bundles to form a highly efficient filter layer, effectively intercepting solid impurities in the eel's tail water.

[0047] A differential pressure sensor is used to monitor the filtration resistance. When the set value is reached, backwashing is automatically started to ensure stable filtration efficiency and prevent filter cloth clogging.

[0048] The third motor drives the connecting pipe and all filter cloths to rotate at low speed, which, together with high-pressure water backwashing, ensures that all filter cloth surfaces are cleaned evenly and thoroughly, reducing cleaning dead corners and extending the service life of the filter cloths. The scraper inside the machine further assists in removing the filter cake and improves the self-cleaning effect.

[0049] Example 2

[0050] In this embodiment, the processing device has a structure that is basically the same as that of the processing device in Embodiment 1. The difference is that a turbidity sensor is installed on the water outlet side of the filter cloth 405. The turbidity sensor monitors the water quality in real time and dynamically adjusts the backwashing frequency and duration based on the real-time water quality data, thereby reducing energy consumption and extending the filter cloth life.

[0051] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A wastewater treatment device for eel farming, comprising a fiber disc filter body, characterized in that: The fiber disc filter body is equipped with a filter structure, which includes a connecting pipe. The connecting pipe is rotatably connected to the fiber disc filter body. Multiple mounting rings are installed on the connecting pipe. Multiple connecting rods are fixedly connected to the mounting rings. Filter cloth is mounted on the connecting rods via a mounting frame. The mounting frame is lifted by a lifting structure, which includes an adjusting frame. The adjusting frame is slidably connected to the fiber disc filter body. An adjusting rod is slidably connected to the adjusting frame. An installation rod is rotatably connected to the adjusting rod. A first lead screw is rotatably connected to the installation rod. Two clamping plates are slidably connected to the installation rod. The clamping plates are threadedly connected to the first lead screw. The mounting frame is provided with two fixing grooves.

2. The wastewater treatment device for eel farming according to claim 1, characterized in that: Two sliding rods are fixedly connected to the mounting frame, and the sliding rods are slidably connected to the connecting rod. A third motor is installed on the fiber disc filter body, and the connecting pipe is fixedly connected to the output shaft of the third motor.

3. The wastewater treatment device for eel farming according to claim 1, characterized in that: An installation shaft is fixedly connected to the installation rod, and the installation shaft is rotatably connected to the adjustment rod. A limit rod is fixedly connected to the installation rod, and the limit rod is slidably connected to the adjustment frame. A hydraulic rod is installed on the adjustment frame, and the adjustment rod is fixedly connected to the telescopic end of the hydraulic rod. A first motor is installed on the installation rod, and the first lead screw is fixedly connected to the output shaft of the first motor. The installation rod is provided with a guide groove that cooperates with the clamping plate.

4. The wastewater treatment device for eel farming according to claim 3, characterized in that: The adjustment frame is adjusted by an adjustment structure, which includes a second lead screw. The second lead screw is rotatably connected to the fiber disc filter body, and the mounting frame is threadedly connected to the second lead screw.

5. The wastewater treatment device for eel farming according to claim 4, characterized in that: A guide plate is fixedly connected to the fiber disc filter body, the adjustment frame is slidably connected to the guide plate, a second motor is installed on the fiber disc filter body, and the second lead screw is fixedly connected to the output shaft of the second motor.

6. The wastewater treatment device for eel farming according to claim 1, characterized in that: The mounting frame is mounted on the connecting rod via a mounting structure, which includes mounting blocks. Two mounting blocks are slidably connected to the connecting rod, and the mounting blocks engage with the sliding rod.

7. The wastewater treatment device for eel farming according to claim 6, characterized in that: The mounting block is provided with an inclined groove, and a driving block is slidably connected to the mounting block. A guide post is fixedly connected inside the connecting rod, and a fixed rod is slidably connected to the guide post. The two driving blocks are fixedly connected to the fixed rod.

8. The wastewater treatment device for eel farming according to claim 7, characterized in that: A third lead screw is rotatably connected to the connecting rod, and the fixing rod is threadedly connected to the third lead screw.

9. The wastewater treatment device for eel farming according to claim 8, characterized in that: A turntable is fixedly connected to the third lead screw, and the turntable has multiple through holes. A guide block is fixedly connected to the mounting block, and a guide rod is fixedly connected inside the connecting rod. The guide block and the guide rod are slidably connected.

10. The wastewater treatment device for eel farming according to claim 1, characterized in that: A drive shaft is rotatably connected to the mounting rod, and a plug rod is fixedly connected to the drive shaft. The plug rod is inserted into a through hole. A fourth motor is installed inside the mounting rod, and the drive shaft is fixedly connected to the output shaft of the fourth motor.

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