Sediment precipitation and separation system for aquaculture

Abstract

The invention relates to the field of aquaculture, and particularly discloses an aquaculture bottom mud precipitation separation system which comprises a water pool main body used for storing aquaculture farmers or tail water and a bottom cleaning device arranged at the inner bottom of the water pool main body, and the bottom cleaning device is used for scraping the bottom of the bottom wall of the water pool main body; a jacket cavity is arranged on the outer side of the water tank main body, a filtering main body is arranged in the jacket cavity, a sewage discharging cavity and a water return cavity are arranged at the bottom of the jacket cavity, at least one sewage discharging opening capable of being controlled to be opened and closed is formed in the sewage discharging cavity, a water filtering opening is formed in the water return cavity, and the water filtering opening is communicated with the water outlet end of the filtering main body; a pumping-in device and a pumping-out device are arranged on the side wall of the pool body, the pumping-out device is used for pumping water in the pool body into the jacket cavity, and the pumping-in device is connected with the water return cavity and used for pumping water in the water return cavity into the pool body. The circulation and reutilization of the water body in aquaculture are improved, and the treatment of the bottom mud in aquaculture is more optimized.

Description

Technical Field

[0001] The invention relates to the technical field of aquaculture, and in particular to a sedimentation and separation system for aquaculture bottom mud. Background Art

[0002] In aquaculture systems, the accumulation and treatment of sediment is one of the core issues affecting water quality management and aquaculture efficiency. Existing sediment treatment methods mostly rely on a multi-stage sedimentation tank step-by-step separation process, that is, by connecting multiple sedimentation tanks in series, the sediment particles of different particle sizes are gradually separated using the principle of gravity sedimentation. However, this model has significant defects: first, the series connection of multiple tanks requires a large amount of land area, and the construction and maintenance costs are high; second, the step-by-step sedimentation process relies on natural sedimentation, the separation efficiency is low, and it is difficult to adapt to the large amount of sediment load generated by high-density aquaculture. More prominently, the existing sedimentation tanks generally lack automated dredging devices, and the sludge accumulated at the bottom of the tank needs to be shut down regularly and cleaned by manual or mechanical discharge. Not only is the operation cumbersome and labor-intensive, it may also cause secondary pollution and interrupt the aquaculture cycle. In addition, there is a bottleneck in the return water design of the system. The treated supernatant is easily disturbed during the return process and carries residual suspended matter, which affects the stability of water quality. At the same time, the recycling rate of water resources is low, which makes it difficult to meet the water-saving needs of green aquaculture.

[0003] In summary, existing sludge treatment technologies have obvious shortcomings in terms of system integration, degree of automation and water circulation efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a sedimentation and separation system for aquaculture to solve the technical problems in the prior art due to the obvious shortcomings of the existing sediment treatment technology in terms of system integration, degree of automation and water circulation efficiency.

[0005] In order to solve the above technical problems, the present invention specifically provides the following technical solutions: A sedimentation and separation system for aquaculture, comprising a water pool body for aquaculture or tailwater storage, and a bottom cleaning device arranged at the inner bottom of the water pool body, the bottom cleaning device being used to scrape the bottom wall of the water pool body; A jacket cavity is arranged outside the water pool body, a filter body is arranged in the jacket cavity, a sewage cavity and a water return cavity are arranged at the bottom of the jacket cavity, and at least one sewage outlet that can be controlled to open and close is arranged on the sewage cavity, and a water filter outlet is arranged on the water return cavity, and the water filter outlet is connected to the water outlet end of the filter body; A pumping device and a pumping device are arranged on the side wall of the water pool body. The pumping device is used to pump the water in the water pool body into the jacket cavity. The pumping device is connected to the return water cavity and is used to pump the water in the return water cavity into the water pool body.

[0006] As a preferred solution of the present invention, the jacket cavity comprises an arc-shaped cavity, the pumping device is arranged on a side wall at one end of the arc-shaped cavity, and the pumping device has a plurality of water inlets, the plurality of water inlets are arranged on the side wall of the water pool body along the axial direction of the water pool body, and the top of the arc-shaped cavity is open to form an arc-shaped opening; The filter body is arranged inside the arc-shaped cavity, the filter body cooperates with the arc-shaped cavity, and a buffer cavity is formed between the end of the filter body and the inner wall of the arc-shaped cavity near the pumping device; The sewage outlet is arranged at the bottom of the buffer chamber.

[0007] 3. The sedimentation and separation system for aquaculture according to claim 1, characterized in that: A mesh plate is arranged in the buffer chamber, an opening and closing valve plate installed on the sewage outlet is arranged at the bottom of the mesh plate, and a first driving part is connected to the top of the mesh plate. The first driving part is used to drive the mesh plate close to the filter body and synchronously drive the opening and closing valve plate to open the sewage outlet.

[0008] As a preferred solution of the present invention, the bottom cleaning device comprises a scraper arranged obliquely and a second driving part driving the scraper to scrape the bottom wall of the pool body; The scraper includes a wedge panel body, one side of the wedge panel body forms a scraping edge that contacts the bottom surface of the pool body, and the other side has guide edges arranged in an array at equal intervals along the length direction of the wedge panel body. The second driving part is located inside the bottom wall of the pool body, and the output shaft of the second driving part is connected to the end of the wedge panel body. The second driving part drives the wedge panel body to rotate in a circle to scrape the bottom wall of the pool body.

[0009] As a preferred solution of the present invention, a guide plate is obliquely arranged at the rear side of the scraper in the rotation direction, and the inclination direction of the guide plate is opposite to the inclination direction of the scraper, and the end of the guide plate is connected to the second driving part; The radial distance of the guide plate along the water pool body is smaller than the radius of the water pool body.

[0010] As a preferred solution of the present invention, an inner tube is arranged inside the wedge panel body along the length direction of the wedge panel body, and a nozzle is arranged on the guide edge, and the nozzle is connected to the inner tube; A sliding seat is mounted on the output shaft of the second driving part, and the sliding seat rotates synchronously with the output shaft. A supply cavity connected to the inner tube is arranged in the sliding seat, and the supply cavity is connected to an external supply source. The material body provided by the supply source includes flocculant.

[0011] As a preferred solution of the present invention, the filter body includes a fixed section and a deformable section, the outer side of the fixed section is connected to the inner wall of the arc-shaped cavity through a frame, and one side of the deformable section is connected to the fixed section; Wherein, the water filter port is arranged on the bottom wall of the arc-shaped cavity at the bottom of the fixed section.

[0012] As a preferred solution of the present invention, the diameter of the filter holes in the filter body gradually decreases in the direction approaching the water filter outlet.

[0013] As a preferred solution of the present invention, a portion of the sewage discharge chamber away from the sewage discharge port is provided with a discharge port, and the discharge port is connected to a secondary sedimentation tank.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention integrates the aquaculture pond or tailwater treatment pond with the sedimentation separation pond by arranging water filtration and sedimentation separation at the bottom of the pond, and arranges a bottom cleaning device in the pond to scrape the bottom of the pond, so that the sediment in the pond can be pumped, transferred, filtered and separated, and the filtered return water can enter the pond again for reciprocating circulation, avoiding the need for natural sedimentation in multiple sedimentation tanks for general pond sediment treatment, thereby improving the water quality management efficiency in aquaculture. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0016] Figure 1 It is a schematic diagram of a partial structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the overall external structure of an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a bottom cleaning device according to an embodiment of the present invention disposed in a water pool body; Figure 4 Schematic diagram of the structure of a scraper according to an embodiment of the present invention.

[0017] The numbers in the figure represent the following: 1-Pool body; 2-Bottom cleaning device; 21-Scraper; 22-Second driving part; 23-Scraper edge; 24-Guide edge; 25-Guide plate; 26-Inner tube; 27-Sliding seat; 3-Jacket cavity; 31-Arc cavity; 32-Arc opening; 33-Buffer cavity; 34-Grid plate; 35-First driving part; 4-Pumping device; 5-Sewage cavity; 51-Sewage outlet; 52-Opening and closing valve plate; 53-Discharge outlet; 54-Secondary sedimentation tank; 6-Filter body; 61-Fixed section; 62-Deformation section; 63-Frame; 7-Return water cavity; 71-Filter outlet; 8-Pumping device. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figures 1 to 4 As shown, the present invention provides a sedimentation and separation system for aquaculture, including a pool body 1 for aquaculture or tail water storage, and a bottom cleaning device 2 arranged at the inner bottom of the pool body 1, and the bottom cleaning device 2 is used to scrape the bottom wall of the pool body 1.

[0020] A jacket cavity 3 is arranged on the outside of the pool body 1, a filter body 6 is arranged in the jacket cavity 3, a sewage cavity 5 and a water return cavity 7 are arranged at the bottom of the jacket cavity 3, and at least one sewage outlet 51 that can be controlled to open and close is arranged on the sewage cavity 5, and a water filter outlet 71 is arranged on the water return cavity 7, and the water filter outlet 71 is connected to the water outlet end of the filter body 6.

[0021] A pumping device 8 and a pumping device 4 are provided on the side wall of the pool body 1. The pumping device is used to pump the water in the pool body 1 to the jacket cavity 3. The pumping device 8 is connected to the return water cavity 7 and is used to pump the water in the return water cavity 7 into the pool body 1.

[0022] The present invention integrates the aquaculture pond or tailwater treatment pond, that is, the pond main body 1, with the sedimentation separation tank by arranging water filtration and sedimentation separation at the bottom of the pond, and arranges the sewage discharge chamber 5 and the return water chamber 7 at the bottom of the pond main body 1 in a ring-shaped arrangement, and arranges a bottom cleaning device in the pond main body to scrape the bottom of the pond. Of course, in this embodiment, the pond main body 1 can be specifically a cylindrical structure, so that the sediment in the pond can be pumped, transferred, filtered and separated, and the filtered return water can enter the pond and then circulate back and forth, avoiding the general pond bottom sludge treatment requiring multiple sedimentation tanks for natural sedimentation, thereby improving the water quality management efficiency in aquaculture.

[0023] This embodiment provides a specific embodiment of a jacket cavity 3: It includes an arc-shaped cavity 31, on the side wall of one end of the arc-shaped cavity 31, a pumping device 4 is arranged, and the pumping device 4 has multiple water inlets 91, and the multiple water inlets 91 are arranged on the side wall of the pool body 1 along the axial direction of the pool body 1, and the top of the arc-shaped cavity 31 is open to form an arc-shaped opening 32.

[0024] A filter body 6 is arranged inside the arc cavity 31, and the filter body 6 cooperates with the arc cavity 31, and a buffer cavity 33 is formed between the end of the filter body 6 and the inner wall of the arc cavity 31 near the pumping device 4. A sewage outlet 51 is arranged at the bottom of the buffer cavity 33.

[0025] Problems that need to be solved in this embodiment also include that the filter body 6 needs to be cleaned and replaced after filtering for a period of time. For this purpose, a mesh plate 34 is provided in the buffer chamber 33, and an opening and closing valve plate 52 installed on the sewage outlet 51 is provided at the bottom of the mesh plate 34. The top of the mesh plate 34 is connected to a first driving unit 35, and the first driving unit 35 is used to drive the mesh plate 34 to approach the filter body 6, and synchronously drive the opening and closing valve plate 52 to open the sewage outlet 51.

[0026] That is, after the filter body 6 has worked for a period of time, the filter body 6 has reached a full load state. At this time, the bottom mud is more adsorbed on the filter body 6. Then, the pumping device 4 will stop pumping the water, and the first driving part 35 will drive the grid plate 34 to move toward the filter body 6 and then compress the filter body 6, so that the bottom mud in the filter body 6 overflows into the buffer chamber 33, wherein the buffer chamber 33 is not a cavity with a fixed volume.

[0027] The first driving part 35 in this embodiment can be a hydraulic cylinder or a linear motor, and its purpose is to drive the grid plate 34 to press against the filter body 6 in a vertical state. In this embodiment, the force structure of the grid plate 34 is not further designed.

[0028] In order to clearly explain the working principle of the bottom cleaning device 2 , the bottom cleaning device 2 specifically includes an inclined scraper 21 and a second driving part 22 for driving the scraper 21 to scrape the bottom wall of the pool body 1 .

[0029] This embodiment provides a specific embodiment of a scraper 21: It includes a wedge panel body, one side of the wedge panel body forms a scraping edge 23 that contacts the bottom surface of the pool body, and the other side has guide edges 24 arranged in an array at equal intervals along the length direction of the wedge panel body. The second driving part 22 is located inside the bottom wall of the pool body 1, and the output shaft of the second driving part 22 is connected to the end of the wedge panel body. The second driving part 22 drives the wedge panel body to rotate in a circle to scrape the bottom wall of the pool body 1.

[0030] A guide plate 25 is obliquely arranged on the rear side of the rotation direction of the scraper 21, and the inclination direction of the guide plate 25 is opposite to the inclination direction of the scraper 21. The end of the guide plate 25 is connected to the second driving part 22. When the second driving part 22 drives the scraper 21 to rotate in a circle, the mixed fluid of the bottom mud and the water body will be guided by the scraping edge 23 of the wedge plate body to flow along the surface of the scraper 21, and will be further divided by the guide edge 24, that is, the bottom mud and water body scraped by the scraper 21 will flow between the two guide edges 24, and the bottom mud and water body will flow toward the bottom wall of the pool body 1 after passing the guide edge 24, and then flow to the angle area formed by the guide plate 25 and the bottom wall of the pool body 1.

[0031] The guide plate 25 in this embodiment has an increased inclination angle component from the center of the pool body 1 toward the side wall of the pool body 1, further optimizing the vertical upward vortex generated between the end of the guide plate 25 and the side of the pool body 1.

[0032] The guide plate 25 can generate resistance to the water body, and the function of the guide plate 25 is to guide the mixed fluid to the inner wall side of the pool body 1, so that it can be absorbed and pumped out by the pumping device 4 located on the side wall of the pool body 1. The purpose of the guide plate 25 being shorter than the radius of the pool body 1 is to form an upward vortex between the end of the guide plate 25 and the inner wall of the pool body 1, so that the water body mixed with the bottom mud can diffuse into the interior of the pool body 1 as much as possible, and be pumped out by the pumping device 4 as soon as possible, that is, the liquid of the bottom mud part is guided to the side of the pool body 1.

[0033] In the above process, the radial distance of the guide plate 25 along the pool body 1 is smaller than the radius of the pool body 1 , and the second driving part 22 is specifically a servo motor, which is connected to the end of the scraper 21 through a reducer.

[0034] An inner tube 26 is arranged inside the wedge panel body along the length direction of the wedge panel body, specifically a hollow cylindrical straight tube. One end of the inner tube 26 is connected to the sliding seat 27 and communicated with the sliding seat 27. A nozzle is arranged on the guide edge 24 and communicated with the inner tube 26.

[0035] In the present embodiment, in order to install and connect the wedge panel body, a sliding seat 27 is mounted on the output shaft of the second driving part 22. The sliding seat 27 is specifically a rotating water joint structure, and its purpose is to supply water to the inner tube 26. A partial structure of the sliding seat 27 rotates synchronously with the output shaft. A supply cavity connected to the inner tube 26 is provided in the sliding seat 27. The supply cavity is connected to an external feed source. The material provided by the feed source includes flocculant, so that the flocculant can be sprayed out through the inner tube 26 and the nozzle, and mixed with the bottom mud and water between the two guide edges 24, and can be fully combined with the bottom mud.

[0036] Furthermore, this embodiment provides a specific implementation of the filter body 6: It includes a fixed section 61 and a deformable section 62 . The outer side of the fixed section 61 is connected to the inner wall of the arc-shaped cavity 31 through a frame 63 , and one side of the deformable section 62 is connected to the fixed section 61 .

[0037] The water filter port 71 is disposed on the bottom wall of the arc-shaped cavity 31 at the bottom of the fixed section 61 .

[0038] In the direction approaching the water filter outlet 71, the aperture of the filter holes in the filter body 6 gradually decreases, the filter aperture of the fixed section 61 remains consistent, and the shape is relatively fixed, which can ensure the stability of the water flow between the filter body 6 and the water filter outlet 71, and the purpose of the deformation section 62 is to be able to be compressed and restored to a state of deformation.

[0039] When the water carrying the bottom mud in the buffer chamber 33 is filtered by the deformable section 62, the large-aperture filtration enables the bottom mud to be adsorbed by the deformable section 62, while not affecting the flow of the filtered water by the fixed section 61 to the water filter outlet 71 within a certain period of time.

[0040] When the deformation section 62 is squeezed by the mesh plate 34, the bottom mud adsorbed by the deformation section 62 can be discharged. If the filter aperture of the deformation section 62 is small, the bottom mud will accumulate on the end surface of the deformation section 62 facing the buffer chamber 33, and after squeezing, the filter aperture is blocked, and it is not convenient to squeeze out the adsorbed bottom mud, that is, it is easy to accumulate inside the deformation section 62.

[0041] Among them, the reason why the deformation section 62 is not fixed in the arc cavity 31 is that it can be squeezed and deformed by the mesh plate 34, and during the extrusion process, the deformation section 62 can also be squeezed with the inner wall of the arc cavity 31 to resist further extrusion of the mesh plate 34 and limit further deformation of the deformation section 62. The bottom mud adsorbed in the deformation section 62 is passed from the mesh plate 34 into the buffer cavity 33 and then falls into the sewage outlet 51.

[0042] Furthermore, in this embodiment, the filter body 6 can be disassembled as a whole after being squeezed through the arc-shaped opening, thereby avoiding the disadvantage that the filter body can only be replaced after the water in the filter cavity is completely drained in the prior art.

[0043] In this embodiment, an annular secondary sedimentation tank 54 can be further built outside the sewage cavity 5, that is, an annular groove with a diameter larger than the sewage cavity 5. The secondary sedimentation tank 54 is embedded in the ground and covered by a cover plate to facilitate later cleaning.

[0044] By setting a discharge outlet 53 in the part of the sewage chamber 5 away from the sewage outlet 51, the discharge outlet 53 is connected to the secondary sedimentation tank 54, and the sediment in the sewage chamber 5 enters the secondary sedimentation tank 54. The secondary sedimentation tank 54 is similar to an extension of the sewage chamber 5, which is convenient for the staff to monitor the quality of the sludge separation.

[0045] Of course, in this embodiment, the water naturally precipitated and stratified in the sludge after separation in the secondary sedimentation tank 54 can be transferred to the return water chamber 7 to further perform sludge separation and return water utilization.

[0046] At the same time, the integration of the sewage discharge chamber 5 and the secondary sedimentation tank 54 with the water tank body 1 in this embodiment can avoid occupying a large amount of land area.

[0047] It is further explained that the pumping device 4 and the pumping device 8 in this embodiment are specifically vertical pumps, which have multiple water suction ports and multiple water outlets and can be distributed along the axial direction of the pool body 1.

[0048] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A sedimentation and separation system for aquaculture, characterized in that: It comprises a water pool body (1) for aquaculture or tail water storage, and a bottom cleaning device (2) arranged at the inner bottom of the water pool body (1), wherein the bottom cleaning device (2) is used to scrape the bottom wall of the water pool body (1); A jacket cavity (3) is arranged outside the pool body (1), a filter body (6) is arranged inside the jacket cavity (3), a sewage discharge cavity (5) and a water return cavity (7) are arranged at the bottom of the jacket cavity (3), and at least one sewage discharge port (51) that can be controlled to open and close is arranged on the sewage discharge cavity (5), and a water filter port (71) is arranged on the water return cavity (7), and the water filter port (71) is connected to the water outlet end of the filter body (6); A pumping device (8) and a pumping device (4) are provided on the side wall of the water pool body (1); the pumping device is used to pump water in the water pool body (1) into the jacket cavity (3); and the pumping device (8) is connected to the return water cavity (7) and is used to pump water in the return water cavity (7) into the water pool body (1).

2. The sedimentation and separation system for aquaculture according to claim 1, characterized in that: The jacket cavity (3) comprises an arc-shaped cavity (31), the pumping device (4) is arranged on a side wall at one end of the arc-shaped cavity (31), and the pumping device (4) has a plurality of water inlets (91), the plurality of water inlets (91) are arranged on the side wall of the water pool body (1) along the axial direction of the water pool body (1), and the top of the arc-shaped cavity (31) is open to form an arc-shaped opening (32); The filter body (6) is arranged inside the arc-shaped cavity (31), the filter body (6) cooperates with the arc-shaped cavity (31), and a buffer cavity (33) is formed between the end of the filter body (6) and the inner wall of the arc-shaped cavity (31) near the pumping device (4); The sewage outlet (51) is arranged at the bottom of the buffer chamber (33).

3. The sedimentation and separation system for aquaculture according to claim 1, characterized in that: A mesh plate (34) is arranged in the buffer chamber (33); an opening and closing valve plate (52) mounted on the sewage outlet (51) is arranged at the bottom of the mesh plate (34); a first driving unit (35) is connected to the top of the mesh plate (34); the first driving unit (35) is used to drive the mesh plate (34) to approach the filter body (6) and synchronously drive the opening and closing valve plate (52) to open the sewage outlet (51).

4. The sedimentation and separation system for aquaculture according to claim 1, characterized in that: The bottom cleaning device (2) comprises a scraper (21) arranged obliquely and a second driving part (22) driving the scraper (21) to scrape the bottom wall of the pool body (1); The scraper (21) comprises a wedge panel body, one side of the wedge panel body being arranged as a scraping edge (23) contacting the bottom surface of the pool body, and the other side of the wedge panel body being arranged in an array with equal intervals along the length direction of the wedge panel body, the second driving part (22) being located inside the bottom wall of the pool body (1), and the output shaft of the second driving part (22) being connected to the end of the wedge panel body, the second driving part (22) driving the wedge panel body to rotate in a circle to scrape the bottom wall of the pool body (1).

5. The sedimentation and separation system for aquaculture according to claim 4, characterized in that: A guide plate (25) is obliquely arranged at the rear side of the scraper (21) in the rotation direction, and the inclination direction of the guide plate (25) is opposite to the inclination direction of the scraper (21), and the end of the guide plate (25) is connected to the second driving part (22); The radial distance of the guide plate (25) along the water pool body (1) is smaller than the radius of the water pool body (1).

6. The sedimentation and separation system for aquaculture according to claim 4, characterized in that: An inner tube (26) is arranged inside the wedge panel body along the length direction of the wedge panel body, and a nozzle is arranged on the guide edge (24), the nozzle being connected to the inner tube (26); A sliding seat (27) is mounted on the output shaft of the second driving part (22), and the sliding seat (27) rotates synchronously with the output shaft. A supply cavity connected to the inner tube (26) is arranged in the sliding seat (27), and the supply cavity is connected to an external supply source. The material body provided by the supply source includes a flocculant.

7. The sedimentation and separation system for aquaculture according to claim 3, characterized in that: The filter body (6) comprises a fixed section (61) and a deformable section (62); the outer side of the fixed section (61) is connected to the inner wall of the arc-shaped cavity (31) via a frame (63); and one side edge of the deformable section (62) is connected to the fixed section (61); Wherein, the water filter port (71) is arranged on the bottom wall of the arc-shaped cavity (31) located at the bottom of the fixed section (61).

8. The sedimentation and separation system for aquaculture according to claim 7, characterized in that: In a direction approaching the water filter port (71), the diameter of the filter holes in the filter body (6) gradually decreases.

9. The sedimentation and separation system for aquaculture according to claim 1, characterized in that: A portion of the sewage discharge chamber (5) away from the sewage discharge port (51) is provided with a discharge port (53), and the discharge port (53) is connected to a secondary sedimentation tank (54).

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