A dead fish collection device
By designing a dead fish collection device that uses circulating water to guide dead fish to a fish-water separation tank and then to a collection tank, the problem of difficult collection of diseased and dead fish is solved, achieving a highly efficient and energy-saving dead fish collection effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO ZHIHUIYU TECHNOLOGY CO LTD
- Filing Date
- 2025-09-08
- Publication Date
- 2026-07-24
AI Technical Summary
Under current technology, it is difficult to detect and collect dead fish in a timely manner, especially in turbid waters where they cannot be cleaned properly, leading to water pollution and the spread of diseases. Moreover, manual collection is time-consuming and labor-intensive.
Design a dead fish collection device that uses circulating water to guide dead fish to a fish-water separation tank through a guide bucket and guide pipe, separates them using a rotating wheel, and allows them to slide into the collection tank through the fish outlet, reducing manual operation.
This method enables efficient collection of dead fish, reduces workload, saves energy, improves collection efficiency, and avoids water pollution and disease transmission.
Smart Images

Figure CN224539178U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aquaculture technology, specifically to a dead fish collection device. Background Technology
[0002] Collecting dead fish is an important daily activity in aquaculture production. If dead fish are not removed in a timely manner, they will pollute the water, spread diseases, and endanger the safety of farmed animals. However, newly dead fish sink to the bottom and do not immediately float to the surface, making them difficult to spot. Currently, the main method of collection is manual, which is time-consuming, labor-intensive, and costly. In particular, in turbid water, it is difficult to identify dead fish, and there is also the problem of incomplete collection.
[0003] To address the aforementioned problems, we propose a dead fish collection device. Utility Model Content
[0004] To address the problems in the background art, this utility model provides a dead fish collection device.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A dead fish collection device includes a rearing tank and a fish-water separation tank. A guide hopper is located at the bottom of the rearing tank, and a guide pipe is connected to the bottom of the guide hopper. The outlet end of the guide pipe is connected to the fish-water separation tank. The fish-water separation tank is located on the upper left side of the rearing tank. A circular separation chamber is located in the center of the inner cavity of the fish-water separation tank. A rotating wheel is movably installed in the center of the inner side of the separation chamber. A filter plate is located in the center of the bottom end of the separation chamber. A fish outlet is located in the center of the left end of the separation chamber, and the fish outlet is connected to a collection tank via a pipe.
[0006] Preferably, a water outlet pipe is installed at the bottom center of the fish-water separation tank, and the filter plate is located at the inlet end of the water outlet pipe.
[0007] Preferably, a perforated frame is fixedly installed at the bottom of the breeding box, the perforated frame is located at the inlet end of the guide pipe, and a fish repellent is installed on the perforated frame.
[0008] Preferably, the collection box is located at the bottom of the fish-water separation box, and a filter screen is provided in the middle of the inner side of the collection box.
[0009] Preferably, the bottom of the collection box is provided with a connecting pipe, and the end of the connecting pipe is connected to the water outlet pipe.
[0010] Compared with the prior art, the beneficial effects of this utility model are: This proposed dead fish collection device utilizes circulating water flow. Dead fish are collected and guided through a guide bucket and pipe. Simultaneously, the circulating water drives a rotating wheel, separating and filtering the dead fish from the circulating water. Finally, the dead fish are moved to the outlet and slide out, falling into a collection tank for further collection. This facilitates the removal of dead fish by staff, eliminating the need to retrieve them from the rearing tank, reducing workload and increasing collection efficiency. Furthermore, the entire process is powered by the circulating water flow, thus saving energy. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the overall structure of the fish-water separation box in this utility model.
[0012] In the diagram: 1. Breeding box; 2. Flow guide hopper; 3. Hollow frame; 4. Fish drive; 5. Flow guide pipe; 6. Fish-water separation box; 7. Separation chamber; 8. Rotary wheel; 9. Filter plate; 10. Water outlet pipe; 11. Fish outlet; 12. Collection box; 13. Filter screen; 14. Connecting pipe. Detailed Implementation
[0013] The technical solution in this application embodiment aims to solve the problems mentioned in the background technology. The overall idea is as follows: It mainly utilizes the flow of circulating water as power. During the flow of circulating water, dead fish are guided and collected through the guide bucket 2, and then guided to the separation chamber 7 through the guide pipe 5. At this time, under the action of the circulating water flow, the rotor 8 rotates, moving the dead fish from the inlet end to the outlet end of the separation chamber 7, and finally sliding out from the fish outlet 11, thus falling into the collection box 12 for temporary collection and storage. Workers only need to pick up and process the dead fish in the collection box 12, without having to retrieve them from the breeding box 1, reducing workload and improving the efficiency of dead fish collection. Furthermore, the entire process relies entirely on the flow of circulating water for power, thus saving energy.
[0014] Example: Refer to Figure 1 - Figure 3As shown, a dead fish collection device in this embodiment includes a breeding tank 1 and a fish-water separation tank 6. A guide bucket 2 is provided at the bottom of the breeding tank 1, and a guide pipe 5 is connected to the bottom of the guide bucket 2. The outlet end of the guide pipe 5 is connected to the fish-water separation tank 6. The fish-water separation tank 6 is located on the upper left side of the breeding tank 1. A circular separation chamber 7 is provided in the middle of the inner cavity of the fish-water separation tank 6. A rotating wheel 8 is movably installed in the middle of the inner side of the separation chamber 7. A filter plate 9 is provided in the middle of the bottom end of the separation chamber 7. A water outlet pipe 10 is installed in the middle of the bottom end of the fish-water separation tank 6. The filter plate 9 is located at the inlet end of the water outlet pipe 10. A fish outlet 11 is provided in the middle of the left end of the separation chamber 7. The fish outlet 11 is connected to a collection tank 12 through a pipe.
[0015] The rotating wheel 8 is mainly driven by the flow of circulating water to rotate, thereby scraping the dead fish that fall into the separation chamber 7. When the dead fish move to the fish outlet 11, they will fall into the collection box 12.
[0016] Collection box 12 is used to collect and gather the separated dead fish, so that the staff can handle the dead fish without having to take them out of the breeding box 1.
[0017] In some examples, a perforated frame 3 is fixedly installed at the bottom of the breeding tank 1. The perforated frame 3 is located at the inlet end of the guide pipe 5. A fish repellent 4 is installed on the perforated frame 3. The fish repellent 4 is mainly used to drive away healthy fish and prevent them from swimming to the guide pipe 5 and being carried into the guide pipe 5 by the water flow.
[0018] In some examples, the collection box 12 is located at the bottom of the fish-water separation box 6, and a filter screen 13 is provided in the middle of the inner side of the collection box 12. The filter screen 13 is mainly used to filter and separate dead fish and the water that falls with the dead fish.
[0019] In some examples, the bottom of the collection tank 12 is provided with a connecting pipe 14, the end of which is connected to the outlet pipe 10. The connection pipe 14 allows the water in the collection tank 12 to be guided to the outlet pipe 10 for collection and diversion.
[0020] The working principle of this utility model is as follows: During use, an external circulating water tank needs to be installed at the end of the outlet pipe 10. It is mainly used to transport circulating water to the breeding tank 1. After the circulating water enters the breeding tank 1, once the water level in the breeding tank 1 exceeds the fish-water separation tank 6, the circulating water will be guided to the fish-water separation tank 6 through the guide pipe 5, and then through the filter plate 9. Finally, it will be discharged from the outlet pipe 10 and flow back into the external circulating water tank for treatment, thus forming a circulating flow.
[0021] When dead fish appear in the breeding tank 1, they initially sink to the bottom. At this time, the dead fish are guided by the guide bucket 2, causing them to gather at the bottom of the guide bucket 2 and fall into the guide pipe 5. Then, they follow the flow of circulating water into the fish-water separation tank 6. When the dead fish flow into the separation chamber 7 with the circulating water, the circulating water will drive the rotating wheel 8 to rotate. The rotation of the rotating wheel 8 will scrape the dead fish, causing them to move from the inlet end of the separation chamber 7 to the outlet end, and finally slide out from the fish outlet 11, falling into the collection tank 12 for temporary collection and storage. The circulating water flows back into the external circulating water tank through the filter plate 9 at the bottom of the separation chamber 7 and the water outlet pipe 10, forming a circulation.
[0022] Furthermore, to prevent healthy fish from entering the guide pipe 5, this utility model provides a perforated frame 3 at the bottom of the breeding box 1, and a fish repellent 4 is installed on the perforated frame 3. The fish repellent 4 is mainly used to repel fish and prevent healthy fish from swimming to the bottom and entering the guide pipe 5. The perforated frame 3 is mainly used to fix the fish repellent 4 in place, and the holes in the perforated frame 3 need to be large enough to allow dead fish to fall smoothly through the perforated frame 3 into the guide pipe 5 for diversion and transportation.
[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A dead fish collection device, characterized in that, It includes a breeding tank (1) and a fish-water separation tank (6). The bottom of the breeding tank (1) is provided with a guide bucket (2), and the bottom of the guide bucket (2) is connected to a guide pipe (5). The outlet end of the guide pipe (5) is connected to the fish-water separation tank (6). The fish-water separation box (6) is located on the upper left side of the breeding box (1). A circular separation chamber (7) is provided in the middle of the inner cavity of the fish-water separation box (6). A rotating wheel (8) is movably installed in the middle of the inner side of the separation chamber (7). A filter plate (9) is provided in the middle of the bottom end of the separation chamber (7). A fish outlet (11) is provided in the middle of the left end of the separation chamber (7). The fish outlet (11) is connected to a collection box (12) through a pipe.
2. The dead fish collection device according to claim 1, characterized in that, The fish-water separation box (6) is equipped with a water outlet pipe (10) at the bottom center, and the filter plate (9) is located at the inlet end of the water outlet pipe (10).
3. The dead fish collection device according to claim 2, characterized in that, The bottom of the breeding box (1) is fixedly installed with a hollow frame (3), which is located at the inlet end of the guide pipe (5). A fish repellent (4) is installed on the hollow frame (3).
4. A dead fish collection device according to claim 3, characterized in that, The collection box (12) is located at the bottom of the fish-water separation box (6), and a filter screen (13) is provided in the middle of the inner side of the collection box (12).
5. A dead fish collection device according to claim 4, characterized in that, The bottom of the collection box (12) is provided with a connecting pipe (14), and the end of the connecting pipe (14) is connected to the water outlet pipe (10).