A shrimp shell collecting device for preventing live shrimp from escaping and automatically returning to a shrimp pond

Abstract

This invention discloses a shrimp shell collection device for preventing live shrimp from escaping and automatically returning them to the pond in a recirculating aquaculture shrimp pond. It relates to the field of aquaculture technology and includes an interception basket that is circulatedly connected to the bottom center of the aquaculture pond. The aquaculture pond is the aquaculture zone, and the interception basket is located within the aquaculture zone. Return baskets are located on both sides of the interception basket, with the top of the return baskets lower than the aquaculture pond and the interception basket. The interception basket contains an interception zone and a return water zone. Several interception plates are provided on both sides of the interception zone. The bottom of the aquaculture pond is connected to the interception zone, and a drain valve is installed on the connecting pipe between the aquaculture pond and the interception zone. This application achieves recirculating aquaculture shrimp farming by installing an interception basket at the top of the aquaculture pond in conjunction with the return baskets. Simultaneously, it effectively collects shrimp shells, dead shrimp, shrimp feces, and uneaten feed in a wastewater discharge trough for timely wastewater discharge. Controlling the water level at the top of the return baskets effectively prevents shrimp escape and enables automatic return of live shrimp to the pond, thereby reducing the labor intensity of workers, significantly saving production costs, and ensuring the survival rate of live shrimp.

Description

Technical Field

[0001] This invention belongs to the field of aquaculture technology, and in particular relates to a shrimp shell collection device for preventing live shrimp from escaping and automatically returning them to the pond in a recirculating aquaculture shrimp pond. Background Technology

[0002] In industrialized recirculating aquaculture systems for shrimp, the timely removal of shrimp shells, dead shrimp, uneaten feed, and feces from the aquaculture water, as well as the effective prevention of live shrimp from escaping, are the core technical aspects that ensure successful aquaculture.

[0003] One problem is that the recirculating aquaculture system for shrimp has small, easily clogged collection baskets. Once clogged, overflow can cause shrimp to escape, increasing the workload of production management. It is difficult to ensure the smooth discharge of shrimp shells, dead shrimp, uneaten feed, and feces from the aquaculture system while effectively preventing live shrimp from escaping and automatically returning them to the pond from the escape-proof baskets.

[0004] During operation, live shrimp left in the sewage collection area need to be manually removed periodically. This is not only labor-intensive, but the removal process can also cause mechanical damage to the shrimp, resulting in a low survival rate. In addition, the sewage discharge structure of the existing equipment is poorly designed, and sewage tends to accumulate at the bottom of the equipment, making it difficult to achieve complete discharge. This not only affects the quality of the aquaculture water, but also requires frequent shutdowns for manual cleaning, increasing the complexity of production management and operating costs.

[0005] The second problem is that recirculating aquaculture is an important model of modern intensive aquaculture, and its core lies in the recycling and real-time purification of water. Solid waste such as feces and uneaten feed at the bottom of the aquaculture ponds needs to be efficiently discharged through underground sewage pipes and enter water treatment equipment such as microfilters and protein skimmers. In traditional designs, the underground sewage pipe has a branch leading to an emergency ditch before connecting to the main return water pipe. During system operation, due to the hydraulic "short-circuit effect," some water always flows into the branch pipe in the ditch, causing solid particles to settle and accumulate in this low-speed section, eventually leading to blockages and the production of harmful substances. To remove these pollutants, workers must manually open the drain valve at the end of this branch pipe multiple times a day, a cumbersome and labor-intensive operation. Summary of the Invention

[0006] The purpose of this invention is to provide a shrimp shell collection device for preventing live shrimp from escaping and automatically returning them to the pond in a recirculating aquaculture system, so as to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a shrimp shell collection device for preventing live shrimp from escaping and automatically returning them to the pond in a recirculating aquaculture system. It includes an interception basket that is circulatedly connected to the bottom center of the aquaculture pond. The aquaculture pond is the aquaculture zone, and the interception basket is located within the aquaculture zone. Return baskets are located on both sides of the interception basket, with the top of the return baskets lower than the aquaculture pond and the interception basket itself. The interception basket contains an interception zone and a return water zone. Several interception plates are installed on both sides of the interception zone. The bottom of the aquaculture pond is connected to the interception zone, and a drain valve is installed on the pipe connecting the aquaculture pond and the interception zone.

[0008] Furthermore, the bottom of the interception zone is provided with an inlet pipe for guiding water from the aquaculture area into the interception zone.

[0009] Furthermore, the sewage discharge valve includes an underground sewage pipe installed below ground and connected to the bottom of the aquaculture pond. One end of the underground sewage pipe is connected to the aquaculture pond, and the other end is equipped with a flap check valve. One end of the flap check valve is connected to the water inlet pipe, and the other end is equipped with a pipe for connecting to the ditch in an area without easy sewage accumulation. The water inlet pipe is equipped with a rope for controlling the opening of the flap check valve.

[0010] Furthermore, one end of the pipeline in the non-soil-accumulation area is connected to a flap check valve, and the other end is equipped with a valve.

[0011] Furthermore, the flap check valve includes a valve body, one end of which is connected to the underground sewage pipe as an inlet, the other end of which is connected to the inlet pipe as outlet A, and the other end of which is connected to the pipe in an area without easy sewage accumulation as outlet B. The valve body has a lifting valve core inside the end near outlet B. The upper end of the lifting valve core is hinged to the valve body, and the lower end is provided with a fixing bolt for fixing a rope. One end of the rope is fixedly connected to the fixing bolt, and the other end passes through the side wall of the inlet pipe above the ground. The fixing bolt is provided with a limiting protrusion. The valve body is provided with a limiting block that cooperates with the limiting protrusion. A sealing gasket is provided at the end of the valve body leading to outlet B.

[0012] Furthermore, the interception zone and the return water zone are connected by a partition frame, which is equipped with a filter screen to prevent contamination from flowing through.

[0013] Furthermore, a sewage discharge trough is provided within the interception zone, and the sewage discharge trough is located at one end near the return water zone.

[0014] Furthermore, the bottom of the sewage discharge trough is provided with a sewage discharge pipe for discharging sewage.

[0015] Furthermore, a return water pipe for controlling the water level in the aquaculture area is provided at the bottom of the return water zone.

[0016] Furthermore, the return basket is a return area, the inner wall of the outer side of the return area is a slope, the opening of the interceptor plate near the interception area is the live shrimp inlet, the opening spacing of the live shrimp inlet is the spacing that the live shrimp can easily pass through, the opening of the interceptor plate near the return area is the live shrimp outlet, and the opening spacing of the live shrimp outlet is smaller than the opening spacing of the live shrimp inlet.

[0017] The present invention has the following beneficial effects: 1. This application achieves recirculating aquaculture for shrimp by installing interception baskets at the top of the aquaculture pond in combination with return baskets. At the same time, it effectively collects shrimp shells, dead shrimp, shrimp feces and uneaten feed in the sewage discharge trough for timely sewage discharge. Controlling the water level at the top of the return basket can effectively prevent shrimp from escaping and realize the automatic return of live shrimp to the pond, thereby reducing the labor intensity of workers, greatly saving production costs, and ensuring the survival rate of live shrimp.

[0018] 2. This application effectively eliminates the possibility of dirt entering from the source by using a flap check valve for physical isolation, thus completely solving the problem of easy dirt accumulation in this pipe section.

[0019] 3. This application transforms the daily high-frequency valve operation (several times a day) into a low-frequency operation performed only during pool cleaning, which greatly reduces labor costs and labor intensity.

[0020] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a perspective view of the interception basket and return basket structure of the present invention; Figure 3 This is a top view of the interception basket and return basket structure of the present invention; Figure 4 for Figure 3 Sectional view along AA; Figure 5 This is a schematic diagram of a partial cross-section of the present invention; Figure 6 for Figure 4 Enlarged view of section B in the middle; In the diagram: 1. Aquaculture pond; 2. Interception basket; 3. Return basket; 4. Interception plate; 5. Inlet pipe; 6. Sewage pipe A; 7. Return water pipe; 8. Underground sewage pipe; 9. Flip-type check valve; 10. Pipeline in areas without easy sewage accumulation; 11. Aquaculture area; 12. Valve; 13. Rope; 14. Ditch; 21. Interception area; 22. Sewage settling trough; 23. Return water area; 24. Separator; 31. Return area; 71. Water level pipe; 91. Valve body; 92. Inlet; 93. Outlet A; 94. Lifting valve core; 95. Outlet B; 96. Sealing gasket; 97. Fixing bolt; 98. Limiting protrusion; 99. Limiting block. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figure 1-6 As shown, this invention relates to a shrimp shell collection device for preventing live shrimp from escaping and automatically returning them to the pond in a recirculating aquaculture system. It includes an interception basket 2 that is circulatedly connected to the bottom center of a culture pond 1. The culture pond 1 contains a culture area 11, and the interception basket 2 is located within the culture area 11. Return baskets 3 are located on both sides of the interception basket 2. The top of the return baskets 3 is lower than the culture pond 1 and the interception basket 2. The interception basket 2 contains an interception area 21 and a return water area 23. Several interception plates 4 are provided on both side walls of the interception area 21. The bottom of the culture pond 1 is connected to the interception area 21, and a drain valve is provided on the connecting pipe between the culture pond 1 and the interception area 21. The height of the top of the interception basket 2 can be adjusted to be the same as or higher than the top of the culture pond 1, depending on actual needs.

[0025] The bottom of the interception zone 21 is provided with an inlet pipe 5 for guiding water from the aquaculture zone 11 into the interception zone 21. The sewage discharge pipe at the bottom of the aquaculture pond 1 is provided with a sewage discharge valve at the front end of the ditch, and the upper part of the sewage discharge valve is connected to the interception zone 21 of the interception basket 2 through the inlet pipe 5.

[0026] The sewage discharge valve includes an underground sewage pipe 8 installed below ground and connected to the bottom of the aquaculture pond 1. One end of the underground sewage pipe 8 is connected to the aquaculture pond 1, and the other end is equipped with a flap check valve 9. One end of the flap check valve 9 is connected to the water inlet pipe 5, and the other end is connected to a pipe 10 for connecting to the ditch 14 in a non-sewage-accumulating area. The water inlet pipe 5 is equipped with a rope 13 for controlling the opening of the flap check valve 9. The rope 13 is a flexible traction cable such as stainless steel wire rope, nylon rope, or polyethylene rope, and the free end of the rope 13 can be set in a position on the water inlet pipe 5 for easy manual operation.

[0027] One end of the pipeline 10 in the area without easy sewage accumulation is connected to the flap check valve 9, and the other end is equipped with a valve 12. The valve 12 is a ball valve or a gate valve; the valve 12 is normally closed during normal system operation and is only opened when the flap check valve 9 fails or when the aquaculture pond needs to be emptied.

[0028] The flap check valve 9 includes a valve body 91. One end of the valve body 91 is connected to the underground sewage pipe 8 as an inlet 92. The other end of the valve body 91 is connected to the inlet pipe 5 as an outlet A 93. The other end of the valve body 91 is connected to the pipe 10 in an area without easy sewage accumulation as an outlet B 95. The valve body 91 has a lifting valve core 94 inside near the outlet B 95. The upper end of the lifting valve core 94 is hinged to the valve body 91, and the lower end is provided with a fixing bolt 97 for fixing the rope 13. One end of the rope 13 is fixedly connected to the fixing bolt 97, and the other end passes through the side wall of the inlet pipe 5 located above the ground. The fixing bolt 97 is provided with a limiting protrusion 98. The valve body 91 is provided with a limiting block 99 that cooperates with the limiting protrusion 98. The valve body 91 is provided with a sealing gasket 96 at the end leading to the outlet B 95. The sealing gasket 96 is made of annular elastic material, and its size is adapted to the diameter of the outlet 95. It is used to form a seal with the outlet 95 when the lifting valve core 94 is closed. When the limiting protrusion 98 cooperates with the limiting block 99, it is used to limit the maximum opening stroke of the lifting valve core 94 and prevent excessive lifting.

[0029] The interception zone 21 and the return water zone 23 are connected by a partition frame 24, which is equipped with a filter screen to prevent contamination from flowing through.

[0030] The interception zone 21 is equipped with a sewage discharge trough 22, which is located at one end near the return water zone 23.

[0031] The bottom of the sewage discharge trough 22 is equipped with a sewage discharge pipe A6 for sewage discharge.

[0032] The bottom of the return water zone 23 is provided with a return water pipe 7, and a water level pipe 71 for controlling the water level of the aquaculture zone 11 is provided on the return water pipe 7.

[0033] The return basket 3 contains a return area 31. The inner wall of the return area 31 is sloped. The interceptor plate 4 has a V-shaped mesh structure. The opening of the interceptor plate 4 near the interception area 21 is the live shrimp inlet, with the opening spacing designed for easy passage of live shrimp. The opening of the interceptor plate 4 near the return area 31 is the live shrimp outlet, with the opening spacing of the outlet smaller than that of the inlet. The slope design facilitates the overflow or swimming of live shrimp up the slope into the aquaculture area 11.

[0034] When the recirculating aquaculture system is operating normally, the drain pipe A6 is closed, the return pipe 7 is open, and the water level in the interception basket 2 is lower than the top of the return basket 3. At this time, shrimp shells, dead shrimp, shrimp feces, uneaten feed, and a small number of live shrimp in the aquaculture pond 1 enter the interception zone 21 through the inlet pipe 5. Shrimp shells, dead shrimp, large particles of shrimp feces, and uneaten feed accumulate in the drain trough 22 of the interception zone 21; small particles of shrimp feces and uneaten feed pass through the filter screen and enter the return pipe 7; live shrimp pass through the interception plate 4 and enter the return zone 31. When live shrimp need to be automatically returned to the pond, the water level in the interception basket 2 can be controlled to be maintained at or slightly higher than the top of the return basket 3 by closing the return pipe 7 or adjusting the height of the water level pipe 71. This allows the live shrimp in the return zone 31 to swim back into the aquaculture pond 1, or they can be manually scooped from the return zone 31 into the aquaculture zone 11. When sewage needs to be discharged, the drain pipe A6 is opened to discharge the shrimp shells, dead shrimp, large particles of shrimp feces, and uneaten feed.

[0035] When the recirculating aquaculture system is operating normally, the flap check valve 9 is kept closed, thereby blocking the hydraulic connection between the underground sewage pipe 8 and the non-sludge-collecting area pipe 10 leading to the ditch 14 and the inlet pipe 5. This prevents the non-sludge-collecting area pipe 10 from participating in the circulating water flow within the system, thus avoiding the accumulation of waste generated by aquaculture in this pipe section. When it is necessary to empty the aquaculture pond 1, the flap check valve 9 is opened by pulling the rope 13, connecting the underground sewage pipe 8 with the non-sludge-collecting area pipe 10. Under the action of gravity, the aquaculture wastewater is discharged into the ditch 14 through the non-sludge-collecting area pipe 10. After the sewage discharge is completed, the rope 13 is released, and the flap check valve 9 automatically closes, re-blocking the connection between the non-sludge-collecting area pipe 10 and the inlet pipe 5. Rope 13 is a flexible rope. Rope 13 applies tension along the axial direction of the water inlet pipe 5, thereby driving the lifting valve core 94 to move upward. The lifting valve core 94 has a planar structure. Its upper end is hinged to the inner wall of the valve body 91, and its lower end is connected to rope 13. It can open and close the outlet 95 by lifting with external force and pressing down with its own weight.

[0036] This application achieves recirculating aquaculture of shrimp by installing an interception basket 2 at the top of the aquaculture pond 1 in combination with a return basket 3. At the same time, it effectively collects shrimp shells, dead shrimp, shrimp feces and uneaten feed in the sewage discharge trough 22 for timely sewage discharge. Controlling the water level at the top of the return basket 3 can effectively prevent shrimp from escaping and realize the automatic return of live shrimp to the pond, thereby reducing the labor intensity of workers, greatly saving production costs, and ensuring the survival rate of live shrimp.

[0037] This application effectively eliminates the possibility of contaminants entering the pipe section by physically isolating the flap check valve 9, thus completely solving the blockage problem. This application transforms the frequent daily valve operations (several times a day) into low-frequency operations only performed during pool cleaning, significantly reducing labor costs and intensity. This application simplifies the existing complex structure by combining the flap check valve 9 with the rope 13, effectively reducing manufacturing costs, facilitating installation and maintenance, and ensuring extremely high reliability, making it ideal for aquaculture environments. This application uses valve 12 as a backup emergency measure, allowing the system to continue operating normally even if the flap check valve 9 fails, improving system reliability and safety. The rope 13 is installed in a convenient and safe location for the operator; pulling the rope 13 from the side of the aquaculture pool 1 or in a passageway eliminates the need to bend over or search for tools, improving the work experience.

[0038] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A shrimp shell collection device for preventing live shrimp from escaping and automatically returning them to the pond in a recirculating aquaculture system, characterized in that: The system includes an interception basket (2) that is circulatedly connected to the bottom center of the aquaculture pond (1). The aquaculture pond (1) contains an aquaculture area (11). The interception basket (2) is located in the aquaculture area (11). There are return baskets (3) on both sides of the interception basket (2). The top of the return basket (3) is lower than that of the aquaculture pond (1) and the interception basket (2). The interception basket (2) contains an interception area (21) and a return water area (23). There are several interception plates (4) on both sides of the interception area (21). The bottom of the aquaculture pond (1) is connected to the interception area (21). A drain valve is provided on the pipeline connecting the aquaculture pond (1) and the interception area (21).

2. The shrimp shell collection device for preventing live shrimp from escaping and automatically returning them to the pond in a recirculating aquaculture system as described in claim 1, characterized in that, The bottom of the interception zone (21) is provided with an inlet pipe (5) for introducing water from the aquaculture zone (11) into the interception zone (21).

3. The shrimp shell collection device for preventing live shrimp from escaping and automatically returning them to the pond in a recirculating aquaculture system as described in claim 2, characterized in that, The drain valve includes an underground drain pipe (8) that is installed below ground and connected to the bottom of the breeding pond (1). One end of the underground drain pipe (8) is connected to the breeding pond (1), and the other end is equipped with a flap check valve (9). One end of the flap check valve (9) is connected to the water inlet pipe (5), and the other end is equipped with a pipe (10) for connecting to the ditch (14) in an area without easy sewage accumulation. The water inlet pipe (5) is equipped with a rope (13) for controlling the opening of the flap check valve (9).

4. The shrimp shell collection device for preventing live shrimp from escaping and automatically returning them to the pond in a recirculating aquaculture system as described in claim 3, characterized in that, One end of the pipeline (10) in the area without easy sewage accumulation is connected to the flap check valve (9), and the other end is equipped with a valve (12).

5. The shrimp shell collection device for preventing live shrimp from escaping and automatically returning them to the pond in a recirculating aquaculture system as described in claim 3, characterized in that, The flap check valve (9) includes a valve body (91), one end of which is connected to the underground sewage pipe (8) as an inlet (92), the other end of which is connected to the inlet pipe (5) as an outlet A (93), and the other end of which is connected to the pipe (10) in an area without easy sewage accumulation as an outlet B (95). A lifting valve core (94) is provided inside the valve body (91) near the outlet B (95). The upper end of the lifting valve core (94) is connected to the valve body (95). 91) The lower end of the hinge is provided with a fixing bolt (97) for fixing the rope (13). One end of the rope (13) is fixedly connected to the fixing bolt (97), and the other end passes through the side wall of the water inlet pipe (5) located above the ground. The fixing bolt (97) is provided with a limiting protrusion (98). The valve body (91) is provided with a limiting block (99) that cooperates with the limiting protrusion (98). The valve body (91) is provided with a sealing gasket (96) at the end leading to the outlet (95).

6. A shrimp shell collection device for preventing live shrimp from escaping and automatically returning them to the pond in a recirculating aquaculture shrimp pond according to any one of claims 1-5, characterized in that, The interception zone (21) and the return water zone (23) are connected by a partition frame (24), which is equipped with a filter screen to prevent contamination from spreading.

7. A shrimp shell collection device for preventing live shrimp from escaping and automatically returning them to the pond in a recirculating aquaculture shrimp pond according to any one of claims 1-5, characterized in that, The interception zone (21) is equipped with a sewage discharge trough (22), which is located at one end near the return water zone (23).

8. The shrimp shell collection device for preventing live shrimp from escaping and automatically returning them to the pond in a recirculating aquaculture shrimp pond according to claim 7, characterized in that, The bottom of the sewage discharge trough (22) is provided with a sewage discharge pipe (6) for sewage discharge.

9. A shrimp shell collection device for preventing live shrimp from escaping and automatically returning them to the pond in a recirculating aquaculture shrimp pond according to any one of claims 1-5, characterized in that, The bottom of the return water area (23) is provided with a return water pipe (7), and a water level pipe (71) for controlling the water level of the aquaculture area (11) is provided on the return water pipe (7).

10. A shrimp shell collection device for preventing live shrimp from escaping and automatically returning them to the pond in a recirculating aquaculture shrimp pond according to any one of claims 1-5, characterized in that, The return basket (3) contains a return area (31), and the inner wall of the outer side of the return area (31) is a slope. The opening of the interceptor plate (4) near the interception area (21) is the live shrimp entrance. The opening spacing of the live shrimp entrance is the spacing at which live shrimp can easily pass through. The opening of the interceptor plate (4) near the return area (31) is the live shrimp exit. The opening spacing of the live shrimp exit is smaller than the opening spacing of the live shrimp entrance.

Images