Breeding tail water treatment shore-based ecological ditch

Abstract

The invention discloses a breeding tail water treatment shore-based ecological ditch which comprises a ditch and a plurality of filter dams arranged in the ditch, and the multiple filter dams divide the ditch into a water inlet adjusting area, a sedimentation area and a rapid biological filter area which are communicated in sequence in the tail water flow direction; the water inlet adjusting area is used for adjusting the tail water flow speed and eliminating the influence of turbulent flow. The settlement area is used for enabling particulate matters in the tail water to quickly settle or be attached to the surface of a support object which is arranged in the settlement area in advance; the support comprises a plurality of mounting rods which are parallel to one another and stretch across the top of the settlement area in the water flow direction, the axial direction of the mounting rods is parallel to the extending direction of the ditch, a plurality of brush rods are hung on the mounting rods in the axial direction, and the bottom ends of the brush rods extend to the bottom of the settlement area; according to the device, the positioning device is arranged in the settling area, so that the brush rod can be efficiently and conveniently disassembled and assembled on the mounting rod, and the brush rod can be conveniently disassembled, assembled, cleaned, maintained or replaced subsequently.

Description

Technical Field

[0001] The invention relates to the technical field of aquaculture tailwater treatment, and in particular to a shore-based ecological ditch for aquaculture tailwater treatment. Background Art

[0002] The treatment process of aquaculture tailwater treatment system in the prior art is usually: sedimentation → aeration → filtration → aquatic plant purification → discharge or reuse. In this treatment process, the purpose of aquatic plant purification is to purify the nutrients in the water body, which is more suitable for lake and river water purification. The treatment speed of tailwater generated by the aquaculture process is slow, which affects the reuse speed of the tailwater, and the aquatic plant purification pool occupies a large area.

[0003] The Chinese utility model patent with announcement number CN219689524U discloses a shore-based ecological ditch for aquaculture tailwater treatment, including an inlet regulation area, a sedimentation area, a rapid biological filtration area, a multi-dimensional catalytic area, a sand filtration area, and filter dams arranged between the areas. The shore-based ecological ditch pumps the aquaculture tailwater to the inlet regulation area through a water pump, and then enters each water treatment area in turn for physical treatment, biological treatment and multi-dimensional catalysis, and then is filtered and discharged or reused through the sand filtration area. The shore-based ecological ditch uses non-vehicle pond embankments to build tailwater treatment facilities according to local conditions, without occupying additional land, and can be equipped with a cover with sufficient compressive strength, without affecting pedestrians and fishery production. In addition, the comprehensive application of physical, biological and multi-dimensional catalytic methods can quickly purify pollution without adding chemical agents, and the purified tailwater can be used as circulating water to supplement the aquaculture pond, saving water and electricity.

[0004] The above patent technology does not specifically disclose the installation method of the brush rod on the mounting rod, and the traditional installation method is mostly to fix it directly with screws. This method is not only time-consuming and labor-intensive, but also inconvenient to disassemble, maintain or replace the brush rod at a later stage, which is very inconvenient. Summary of the invention

[0005] In order to solve the technical problems raised in the above background technology, the present invention provides a shore-based ecological ditch for aquaculture tailwater treatment.

[0006] The present invention is implemented by the following technical scheme: a shore-based ecological ditch for aquaculture tailwater treatment, comprising a ditch and a plurality of filter dams arranged in the ditch, wherein the plurality of filter dams divide the ditch along the tailwater flow direction to form a water inlet regulation area, a sedimentation area, and a rapid biological filtration area which are connected in sequence;

[0007] The water inlet regulating area is used to adjust the tailwater flow rate and eliminate the influence of turbulence;

[0008] The settling area is used to allow particulate matter in the tail water to settle quickly or adhere to the surface of a support pre-set in the settling area;

[0009] The rapid biological filtration area is used to remove material sediment and nutrients in the tail water;

[0010] The support includes a plurality of mounting rods which are parallel to each other and cross the top of the sedimentation area along the water flow direction, the axial direction of the mounting rods is parallel to the extension direction of the ditch, and a plurality of brush rods are suspended axially on the mounting rods, and the bottom ends of the brush rods extend to the bottom of the sedimentation area;

[0011] The brush rod is suspended and mounted on the mounting rod through a positioning device.

[0012] As a further improvement of the above scheme, an aeration device is installed at the bottom of the rapid biological filtration area, and the aeration device is used to spray air upward from the bottom to make the water fully contact with the air for stirring, thereby preventing the deposition of substances in the water;

[0013] The rapid biological filtration area located above the aeration device is filled with a light bio-affinity filler, and the light bio-affinity filler is used for bacteria to attach to remove nutrients in the water body.

[0014] As a further improvement of the above solution, the lightweight filler includes one or more of polyurethane, polyvinyl chloride, polymer fiber, polystyrene, and polypropylene.

[0015] As a further improvement of the above scheme, the positioning device includes a positioning rod, a first insertion hole is vertically opened on the mounting rod for the positioning rod to be inserted, a first connecting rod is detachably provided at the bottom of the positioning rod, the bottom of the first connecting rod is concentrically fixed to the top of the corresponding brush rod, and a locking mechanism is provided on the mounting rod, which can lock and fix the top of the positioning rod to the mounting rod.

[0016] As a further improvement of the above scheme, the locking mechanism includes a pressure plate, which is arranged above the positioning rod, and two opposite clamping arms are rotatably arranged at the bottom of the pressure plate, and a positioning space for the top of the positioning rod to be extended is formed between the two clamping arms, and a clamping block is arranged on the opposite sides of the two clamping arms, and a clamping groove matching the clamping block is opened on the outer wall of the positioning rod, and a pressure ring is arranged on the top wall of the mounting rod, and the pressure ring has a through hole for the top of the positioning rod to pass through, and the inner peripheral side of the ring wall of the pressure ring close to the top has a first slope that converges downward and centripetally, and the two clamping arms have a second slope on the separated sides.

[0017] The two clamp arms are guided downward by the pressure plate, so that the second slope of the clamp arm contacts the first slope of the pressure ring, and the two clamp arms are deflected and brought closer to each other, so that the two clamping blocks are respectively clamped into the two clamping grooves.

[0018] As a further improvement of the above solution, the top of the clamp arm is installed on the bottom wall of the pressure plate through a coil spring and a reel. When the clamp arm does not touch the pressure ring, the two clamp arms are separated from each other and the coil spring is in a non-deformed state.

[0019] As a further improvement of the above scheme, a base block is fixed on one side of the outer wall of the mounting rod, and a cylinder parallel to the positioning rod is provided on the base block. A second connecting rod that can move axially relative to the cylinder is slidably inserted on the top of the cylinder, and the top of the second connecting rod is fixed on the bottom wall of the pressure plate.

[0020] As a further improvement of the above scheme, a first fixed ring through which the positioning rod can pass is concentrically fixed to the top of the mounting rod, a second fixed ring is concentrically fixed to the outside of the first fixed ring, and a movable ring through which the pressure ring can pass is rotatably inserted at the top position of the inner circumference of the second fixed ring.

[0021] Two first limiting grooves extending inwardly and bending in a centripetal direction are relatively formed on the circumferential direction of the ring wall of the moving ring, and two second limiting grooves extending in a radial direction are relatively formed on the circumferential direction of the ring wall of the first fixed ring, a limiting rod parallel to the positioning rod is slidably clamped on the first limiting groove, the bottom of the limiting rod is slidably clamped in the second limiting groove, a top rod parallel to the extension direction of the groove body of the second limiting groove is provided on the outer wall of the limiting rod, a pressure-bearing rod is axially provided at the bottom of the pressure ring, and the pressure-bearing rod has an oblique groove that is pressed and slidably matched with the top rod; a telescopic rod is provided between the bottom of the pressure ring and the top of the mounting rod, and a third spring is sleeved on the outer side of the telescopic rod;

[0022] By guiding the movable ring to rotate, the limiting rod drives the push rod to contact the inclined groove wall of the pressure-bearing rod under the common limiting action of the first limiting groove and the second limiting groove, forcing the pressure ring to move in the axial direction of the positioning rod towards the clamping arm.

[0023] As a further improvement of the above scheme, a spiral track groove is axially opened on the inner side of the cylinder, a pin is provided on the outer wall of the second connecting rod and is slidably engaged with the track groove, a first gear is sleeved and fixed on the outer peripheral side of the cylinder, and a second gear that cooperates with the first gear is sleeved and fixed on the outer peripheral side of the movable ring.

[0024] As a further improvement of the above scheme, a second insertion hole is provided at the bottom of the positioning rod for inserting the top of the first connecting rod, a clamping rod is radially inserted on the outer wall of the bottom of the positioning rod, and a clamping hole matching the clamping rod is provided on the outer wall of the first connecting rod.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The shore-based ecological ditch for treating aquaculture tailwater of the present invention can efficiently and conveniently complete the disassembly and assembly of the brush rod on the mounting rod by arranging a positioning device in the sedimentation area, so as to facilitate the subsequent disassembly, assembly, cleaning, maintenance or replacement of the brush rod, and is stable and reliable after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure of the installation rod and the positioning rod in the middle settlement area in a combined state;

[0029] Figure 3 for Figure 2 A schematic diagram of the main structure of the middle mounting rod and the positioning rod in a combined state;

[0030] Figure 4 for Figure 3 A schematic diagram of a partial cross-sectional structure between the middle mounting rod and the positioning rod in a combined state;

[0031] Figure 5 for Figure 4 The enlarged structural diagram at A in the middle;

[0032] Figure 6 for Figure 4 A schematic diagram of the cross-sectional structure between the middle clamp arm and the positioning rod in an unlocked state;

[0033] Figure 7 for Figure 6 The enlarged structural diagram at B in the middle;

[0034] Figure 8 for Figure 4 A schematic diagram of the cross-sectional structure when the bottom of the second connecting rod is axially inserted into the cylinder;

[0035] Fig. 9 for Figure 2 Schematic diagram of the top view of the middle moving ring;

[0036] Fig.10 for Figure 2 Schematic diagram of the structure of the first fixed ring viewed from above.

[0037] Description of main symbols:

[0038] 1. Ditch; 2. Filtration dam; 3. Water inlet regulation area; 4. Sedimentation area; 5. Rapid biological filtration area; 6. Mounting rod; 7. Brush rod; 8. Positioning rod; 9. First connecting rod; 10. First plug hole; 11. Pressure plate; 12. Clamp arm; 13. Block; 14. Slot; 15. Base block; 16. Cylinder; 17. Second connecting rod; 18. Pressure ring; 19. First gear; 20. Second gear; 21. Moving ring; 211. First limiting groove; 22. First fixed ring; 221. Second limiting groove; 23. Second fixed ring; 24. Limiting rod; 25. Ejector rod; 26. Pressure rod; 27. Inclined groove; 28. Telescopic rod; 29. ​​Second plug hole; 30. Clamping rod; 31. Clamping hole; 32. Track groove; 33. Ejector pin; 34. Wire wheel. DETAILED DESCRIPTION

[0039] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0040] Example 1

[0041] Please combine Figure 1 The shore-based ecological ditch for aquaculture tailwater treatment includes a ditch 1 and a plurality of filter dams 2 arranged in the ditch 1. The plurality of filter dams 2 divide the ditch 1 along the tailwater flow direction to form a water inlet regulation area 3, a sedimentation area 4, and a rapid biological filtration area 5 which are connected in sequence.

[0042] The water inlet regulation area 3 is used to adjust the tailwater flow rate and eliminate the influence of turbulence;

[0043] The settling area 4 is used to allow the particulate matter in the tail water to settle quickly or adhere to the surface of the support pre-set in the settling area 4;

[0044] The rapid biological filtration zone 5 is used to remove material sediment and nutrients in the tail water.

[0045] The filter dam 2 of this embodiment can be composed of a plurality of gabions, and the gabions are filled with porous fillers. The porous fillers can not only prevent the material from running to other areas, but also facilitate the accumulation of the porous fillers and the gabions to form a dam body.

[0046] An aeration device is installed at the bottom of the rapid biological filtration area 5, and the aeration device is used to spray air upward from the bottom to make the water and air fully contact for stirring, thereby preventing the sedimentation of substances in the water;

[0047] The rapid biological filtration zone 5 located above the aeration device is filled with a bio-affinity lightweight filler, and the bio-affinity lightweight filler is used for bacteria to attach to remove nutrients in the water body.

[0048] The biocompatible lightweight filler includes one or more of polyurethane, polyvinyl chloride, polymer fiber, polystyrene, and polypropylene.

[0049] The filtration dam 2 separates the ditch 1 into a water inlet regulation area 3, a sedimentation area 4, and a rapid biological filtration area 5 which are interconnected in sequence. It can combine the advantages of ecological ditches, three pools and two dams, and an integrated equipment management model to form a shore-based ecological ditch system for aquaculture tailwater treatment with clear regional division of labor and integrating physical and biological treatments.

[0050] The treatment process of aquaculture tail water is as follows: the aquaculture tail water first enters the water inlet regulation area 3, where the flow rate is regulated and disturbances are eliminated; then it enters the sedimentation area 4, where large particles in the water body quickly settle or attach to the support, and the water body is initially purified; the water after initial purification enters the rapid biological filtration area 5, where small particles in the water are intercepted by the bio-affinity lightweight filler, and the microorganisms in the water attach to the surface of the bio-affinity lightweight filler. The nitrifying bacteria and other microorganisms attached to the bio-affinity lightweight filler can remove nutrients such as ammonia nitrogen in the water body, and the aeration equipment can not only remove volatile substances in the water, but also increase the dissolved oxygen content of the water body and improve the purification ability of microorganisms. After the water flows through the rapid biological filtration area 5 for filtration, it can be directly discharged or reused. At the same time, the filter dam 2 between the two adjacent areas can also purify the water body, further improving the effect of water purification.

[0051] Example 2

[0052] Please combine Figures 1 to 10 This embodiment is a preferred embodiment of embodiment 1. The support of this embodiment includes multiple mounting rods 6 which are parallel to each other and cross the top of the sedimentation area 4 along the water flow direction. The axial direction of the mounting rod 6 is parallel to the extension direction of the ditch 1. Multiple brush rods 7 are suspended axially on the mounting rod 6. The bottom ends of the brush rods 7 extend to the bottom of the sedimentation area 4, and a brush array can be formed in the entire sedimentation area 4. The water flow is fully in contact with the brush array, so that the flow rate is greatly slowed down. The bristles on the brush rods 7 can have sufficient time to absorb tiny impurities in the water, and achieve ideal physical filtration and biological filtration effects by absorbing suspended objects in the water.

[0053] Specifically, the brush rod 7 is suspended and mounted on the mounting rod 6 through a positioning device.

[0054] The positioning device includes a positioning rod 8, and a first insertion hole 10 is vertically opened on the mounting rod 6 for the positioning rod 8 to be inserted through. A first connecting rod 9 is detachably provided at the bottom of the positioning rod 8, and the bottom of the first connecting rod 9 is concentrically fixed to the top of the corresponding brush rod 7. A locking mechanism is provided on the mounting rod 6, and the locking mechanism can lock and fix the top of the positioning rod 8 on the mounting rod 6.

[0055] The locking mechanism includes a pressure plate 11, which is arranged above the positioning rod 8. Two opposite clamping arms 12 are rotatably arranged at the bottom of the pressure plate 11. A positioning space is formed between the two clamping arms 12 for the top of the positioning rod 8 to extend into. Blocks 13 are arranged on the opposite sides of the two clamping arms 12. A clamping groove 14 matching the block 13 is opened on the outer wall of the positioning rod 8. A pressure ring 18 is arranged on the top wall of the mounting rod 6. The pressure ring 18 has a through hole (not marked) for the top of the positioning rod 8 to pass through. The inner peripheral side of the ring wall of the pressure ring 18 close to the top has a first slope (not marked) that converges downward and centripetally. The two clamping arms 12 have a second slope (not marked) on the separated sides.

[0056] The two clamping arms 12 are guided downward by the pressure plate 11, so that the second slope of the clamping arm 12 contacts the first slope of the pressure ring 18, forcing the two clamping arms 12 to deflect and close to each other. At the same time, when the top of the positioning rod 8 enters the positioning space, the two clamping blocks 13 are respectively inserted into the two clamping grooves 14, thereby completing the locking and positioning of the positioning rod 8 on the mounting rod 6.

[0057] The top of the clamp arm 12 is installed on the bottom wall of the pressure plate 11 through a coil spring and a reel. When the clamp arm 12 does not contact the pressure ring 18, the two clamp arms 12 are separated from each other and the coil spring is in a non-deformed state. When the clamp arm 12 is squeezed by the pressure ring 18 and deflected centripetally, the coil spring is compressed and deformed.

[0058] A base block 15 is fixed to one side of the outer wall of the mounting rod 6 , and a cylinder 16 parallel to the positioning rod 8 is arranged on the base block 15 , and a second connecting rod 17 which can move axially relative to the cylinder 16 is slidably inserted on the top of the cylinder 16 , and the top of the second connecting rod 17 is fixed to the bottom wall of the pressure plate 11 .

[0059] A first fixed ring 22 through which the positioning rod 8 can pass is concentrically fixed to the top of the mounting rod 6, a second fixed ring 23 is concentrically fixed to the outside of the first fixed ring 22, and a movable ring 21 through which the pressure ring 18 can pass is rotatably inserted at the top position of the inner circumference of the second fixed ring 23, and the movable ring 21 is located above the first fixed ring 22.

[0060] Two first limiting grooves 211 extending inwardly and bending are relatively formed on the circumferential direction of the ring wall of the moving ring 21, and two second limiting grooves 221 extending in radial direction are relatively formed on the circumferential direction of the ring wall of the first fixed ring 22. A limiting rod 24 parallel to the positioning rod 8 is slidably clamped on the first limiting groove 211, and the bottom of the limiting rod 24 is slidably clamped in the second limiting groove 221. A top rod 25 parallel to the extension direction of the second limiting groove 221 is provided on the outer wall of the limiting rod 24. A pressure rod 26 is axially arranged at the bottom of the pressure ring 18, and the pressure rod 26 has an oblique groove 27 that contacts and slides with the top rod 25. A telescopic rod 28 is arranged between the bottom of the pressure ring 18 and the top of the mounting rod 6, and a third spring (not shown) is sleeved on the outer side of the telescopic rod 28.

[0061] By guiding the movable ring 21 to rotate, the limiting rod 24 drives the push rod 25 to contact the groove wall of the inclined groove 27 of the pressure-bearing rod 26 under the common limiting action of the first limiting groove 211 and the second limiting groove 221, forcing the pressure ring 18 to move in the axial direction of the positioning rod 8 toward the direction close to the clamping arm 12 (the third spring is stretched and deformed), so as to facilitate the subsequent contact and pressure fit between the pressure ring 18 and the clamping arm 12.

[0062] A spiral track groove 32 is axially opened on the inner side of the cylinder 16, and a pin 33 is provided on the outer wall of the second connecting rod 17 to slide and engage with the track groove 32. The first gear 19 is sleeved and fixed on the outer peripheral side of the cylinder 16, and the second gear 20 that cooperates with the first gear 19 is sleeved and fixed on the outer peripheral side of the movable ring 21.

[0063] When the pressure plate 11 drives the second connecting rod 17 to move downward, the ejector pin 33 will continuously rub and squeeze the groove wall of the axial spiral track groove 32, forcing the cylinder 16 to rotate in one direction. The cylinder 16 drives the movable ring 21 to rotate through the first gear 19 and the second gear 20.

[0064] A second insertion hole 29 is provided at the bottom of the positioning rod 8 for inserting the top of the first connecting rod 9, and a clamping rod 30 is radially inserted on the outer wall of the positioning rod 8 near the bottom. A clamping hole 31 matching with the clamping rod 30 is provided on the outer wall of the first connecting rod, which can facilitate the disassembly and assembly of the brush rod 7 on the positioning rod 8 through the first connecting rod 9.

[0065] A second spring (not shown) is sleeved on the outer side of the clamping rod 30 , and a wire wheel 34 is provided at the bottom of the second connecting rod 17 . A pull rope is wound around the wire wheel 34 , and one end of the pull rope is fixed to the outer wall of the clamping rod 30 .

[0066] Initially, the clamp arms 12 are in a state of being separated from each other, the pull rope is in a state of being wound and tensioned on the pulley 34, and the end of the clamp rod 30 is separated from the second insertion hole 29, and the second spring is in a state of being stretched and deformed.

[0067] When the clamp arms 12 are in a state of being close to each other, the pull rope is in a tensioned state on the reel 34, and the end of the clamp rod 30 extends into the second insertion hole 29 to be clamped into the clamp hole 31, and the second spring is in a non-deformed state.

[0068] In this embodiment, only by moving the pressure plate 11 downward, the clamping arm 12 can be driven downward to allow the top of the positioning rod 8 to enter the positioning space, and the pressure ring 18 can be moved upward to force the clamping arms 12 to close and thus fix the positioning rod 8 on the mounting rod 6. At the same time, the cylinder 16 can drive the wire wheel 34 to release the wire, so that the clamping rod 30 can be clamped into the clamping hole 31 to indirectly realize the installation and fixation of the brush rod 7 on the mounting rod 6.

[0069] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A shore-based ecological ditch for aquaculture tailwater treatment, characterized in that: It comprises a ditch and a plurality of filter dams arranged in the ditch, wherein the plurality of filter dams divide the ditch along the flow direction of tailwater to form a water inlet regulation area, a sedimentation area, and a rapid biological filtration area which are connected in sequence; The water inlet regulating area is used to adjust the tailwater flow rate and eliminate the influence of turbulence; The settling area is used to allow particulate matter in the tail water to settle quickly or adhere to the surface of a support pre-set in the settling area; The rapid biological filtration area is used to remove material sediment and nutrients in the tail water; The support includes a plurality of mounting rods which are parallel to each other and cross the top of the sedimentation area along the water flow direction, the axial direction of the mounting rods is parallel to the extension direction of the ditch, and a plurality of brush rods are suspended axially on the mounting rods, and the bottom ends of the brush rods extend to the bottom of the sedimentation area; The brush rod is suspended and mounted on the mounting rod through a positioning device.

2. The shore-based ecological ditch for aquaculture tailwater treatment according to claim 1, characterized in that: An aeration device is installed at the bottom of the rapid biological filtration area, and the aeration device is used to spray air upward from the bottom to make the water fully contact with the air for stirring, thereby preventing the sedimentation of substances in the water; The rapid biological filtration area located above the aeration device is filled with a light bio-affinity filler, and the light bio-affinity filler is used for bacteria to attach to remove nutrients in the water body.

3. The shore-based ecological ditch for aquaculture tailwater treatment according to claim 2, characterized in that: The lightweight filler includes one or more of polyurethane, polyvinyl chloride, polymer fiber, polystyrene, and polypropylene.

4. The shore-based ecological ditch for aquaculture tailwater treatment according to claim 1, characterized in that: The positioning device includes a positioning rod, a first insertion hole is vertically opened on the mounting rod for the positioning rod to be inserted through, a first connecting rod is detachably provided at the bottom of the positioning rod, the bottom of the first connecting rod is concentrically fixed to the top of the corresponding brush rod, and a locking mechanism is provided on the mounting rod, which can lock and fix the top of the positioning rod to the mounting rod.

5. The shore-based ecological ditch for aquaculture tailwater treatment according to claim 4, characterized in that: The locking mechanism includes a pressure plate, which is arranged above the positioning rod. Two opposite clamping arms are rotatably arranged at the bottom of the pressure plate. A positioning space is formed between the two clamping arms for the top of the positioning rod to extend into. Blocks are arranged on the opposite sides of the two clamping arms. A clamping groove matching the block is provided on the outer wall of the positioning rod. A pressure ring is arranged on the top wall of the mounting rod. The pressure ring has a through hole for the top of the positioning rod to pass through. The inner peripheral side of the ring wall of the pressure ring close to the top has a first slope that converges downward and centripetally, and the two clamping arms have a second slope on the separated sides. The two clamp arms are guided downward by the pressure plate, so that the second slope of the clamp arm contacts the first slope of the pressure ring, and the two clamp arms are deflected and brought closer to each other, so that the two clamping blocks are respectively clamped into the two clamping grooves.

6. The shore-based ecological ditch for aquaculture tailwater treatment according to claim 5, characterized in that: The top of the clamp arm is installed on the bottom wall of the pressure plate through a coil spring and a coil shaft. When the clamp arm does not contact the pressure ring, the two clamp arms are in a state of separation from each other, and the coil spring is in a non-deformed state.

7. The shore-based ecological ditch for aquaculture tailwater treatment according to claim 5, characterized in that: A base block is fixed on one side of the outer wall of the mounting rod, and a cylinder parallel to the positioning rod is arranged on the base block. A second connecting rod which can move axially relative to the cylinder is slidably inserted on the top of the cylinder, and the top of the second connecting rod is fixed on the bottom wall of the pressure plate.

8. The shore-based ecological ditch for aquaculture tailwater treatment according to claim 7, characterized in that: A first fixed ring through which the positioning rod can pass is coaxially fixed to the top of the mounting rod, a second fixed ring is coaxially fixed to the outside of the first fixed ring, and a movable ring through which the pressure ring can pass is rotatably inserted at the top position of the inner circumference of the second fixed ring. Two first limiting grooves extending inwardly and bending in a centripetal direction are relatively formed on the circumferential direction of the ring wall of the moving ring, and two second limiting grooves extending in a radial direction are relatively formed on the circumferential direction of the ring wall of the first fixed ring, a limiting rod parallel to the positioning rod is slidably clamped on the first limiting groove, the bottom of the limiting rod is slidably clamped in the second limiting groove, a top rod parallel to the extension direction of the groove body of the second limiting groove is provided on the outer wall of the limiting rod, a pressure-bearing rod is axially provided at the bottom of the pressure ring, and the pressure-bearing rod has an oblique groove that is pressed and slidably matched with the top rod; a telescopic rod is provided between the bottom of the pressure ring and the top of the mounting rod, and a third spring is sleeved on the outer side of the telescopic rod; By guiding the movable ring to rotate, the limiting rod drives the push rod to contact the inclined groove wall of the pressure-bearing rod under the common limiting action of the first limiting groove and the second limiting groove, forcing the pressure ring to move in the axial direction of the positioning rod towards the clamping arm.

9. The shore-based ecological ditch for aquaculture tailwater treatment according to claim 8, characterized in that: A spiral track groove is axially opened inside the cylinder, a pin is provided on the outer wall of the second connecting rod for sliding engagement with the track groove, a first gear is sleeved and fixed on the outer peripheral side of the cylinder, and a second gear that cooperates with the first gear is sleeved and fixed on the outer peripheral side of the movable ring.

10. The shore-based ecological ditch for aquaculture tailwater treatment according to claim 9, characterized in that: The bottom of the positioning rod is provided with a second insertion hole for inserting the top of the first connecting rod, the outer wall of the positioning rod near the bottom is radially provided with a clamping rod, and the outer wall of the first connecting rod is provided with a clamping hole matched with the clamping rod.

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