A fish waste collection device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SOUTH CHINA AGRICULTURAL UNIVERSITY
- Filing Date
- 2025-08-13
- Publication Date
- 2026-07-21
Smart Images

Figure CN224522139U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aquaculture equipment technology, specifically to a fish feces collection device. Background Technology
[0002] The effective collection and removal of fish waste is a common and challenging problem in existing aquaculture systems. Traditional methods relying on natural sedimentation and water exchange are inefficient and cannot meet the needs of high-density aquaculture. Although some systems employ methods such as collection ponds, sedimentation tanks, or manual cleaning, these often suffer from drawbacks such as high labor intensity and low automation. Especially for large-scale aquaculture ponds or complex aquaculture facilities, achieving targeted and efficient collection of fish waste, preventing it from remaining suspended in the water for extended periods or accumulating in hard-to-clean corners, has become a bottleneck for improving water quality management efficiency, promoting fish waste recycling, and reducing operating costs. Utility Model Content
[0003] In view of the shortcomings of the existing technology, this utility model proposes a fish feces collection device to solve the problem of cumbersome, time-consuming and labor-intensive operation of fish feces collection.
[0004] The technical solution of this utility model is as follows:
[0005] A fish feces collection device includes:
[0006] The container is capable of floating on water.
[0007] The first filter screen is disposed in the housing and is inclined to the horizontal direction;
[0008] The second filter screen is located below the first filter screen and is parallel to the first filter screen. A drain outlet is provided on the lower side of the box.
[0009] A water pump, wherein the water pump is connected to an inlet and an outlet, and the outlet is located above the first filter screen;
[0010] In addition, there is a manure collection box and a scraper. The manure collection box is supported at the lower ends of the first and second filter screens. The scraper has a filter screen passing area. When the scraper slides along the filter screen, the first and second filter screens pass through the filter screen passing area at the same time, so that the trapped material on their surfaces is scraped into the manure collection box under the force of the scraper.
[0011] Optionally, the outer surface of the container is equipped with a rubber airbag, which allows the container to float on the water surface.
[0012] Optionally, the mesh size of the first filter screen is larger than that of the second filter screen.
[0013] Optionally, the water outlet passes through the side panel of the tank and is located above the first filter screen.
[0014] Optionally, a third filter screen is installed at the water inlet.
[0015] Optionally, the first filter screen and the second filter screen share a manure collection box, the manure collection box is equipped with a water baffle, and the water baffle is driven by a first power source.
[0016] Optionally, the first and second filters share a scraper, which is driven by a second power source.
[0017] Optionally, the first power source includes a shaft and a telescopic cylinder. When the telescopic cylinder extends or retracts, it drives the shaft to open and close the water baffle. The second power source includes a motor, a lead screw, and a nut. The nut is fixed to the scraper, and the lead screw is parallel to the filter screen. When the motor drives the lead screw to rotate, the nut drives the scraper to move along the filter screen.
[0018] Optionally, the bottom of the tank is provided with a drain hole for draining the water pumped into the tank.
[0019] Optionally, a solar panel is installed on the top of the enclosure, and a battery is installed inside the enclosure to provide power for the water pump and scraper.
[0020] As can be seen from the above technical solution, the beneficial technical effects of this utility model are as follows:
[0021] With its simple structure and convenient operation, the fish manure collection device can be automated. After placing the device in the aquaculture area, staff only need to clean the manure collection box regularly to ensure continuous operation, reducing labor costs and effectively controlling management costs.
[0022] It can effectively collect fish feces in the water, prevent fish from destroying the feces while swimming, and avoid fish feces decomposing in the water and polluting the water quality.
[0023] It uses clean energy, does not pollute natural water bodies, does not harm fish, can be used continuously, and has strong applicability. Attached Figure Description
[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0025] Figure 1 This is a schematic diagram of the overall design of this utility model;
[0026] Figure 2 This utility model Figure 1 Enlarged diagram of point A in the diagram;
[0027] Figure 3 This is a schematic diagram of the scraper of this utility model.
[0028] Figure label:
[0029] 1. Housing; 2. First filter screen; 3. Second filter screen; 4. Drain hole; 5. Water pump; 6. Outlet; 7. Inlet; 8. Manure collection box; 9. Scraper; 10. Rubber airbag; 11. Third filter screen; 12. Water baffle; 13. Shaft; 14. Telescopic cylinder; 15. Motor; 16. Lead screw; 17. Nut; 18. Solar panel; 19. Battery; 901. Filter screen passage area. Detailed Implementation
[0030] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.
[0031] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.
[0032] Example 1
[0033] Box 1 is made of wood and is capable of floating on water.
[0034] First filter screen 2, the first filter screen 2 is disposed in the housing 1 and is inclined to the horizontal direction;
[0035] The second filter 3 is located below the first filter 2 and is parallel to the first filter 2. A drain outlet is provided on the lower side of the box.
[0036] A water pump 5 is connected to an inlet 7 and an outlet 6, with the outlet 6 located above the first filter screen 2.
[0037] In addition, there is a manure collection box 8 and a scraper 9. The manure collection box 8 is supported at the lower end of the first filter screen 2 and the second filter screen 3. The scraper is provided with a filter screen passing area 901. When the scraper 9 slides along the filter screen, the first filter screen 2 and the second filter screen 3 pass through the filter screen passing area 901 at the same time, so that the trapped material on their surfaces is scraped onto the manure collection box 8 under the action of the scraper 9.
[0038] The working process of this device is as follows:
[0039] When the device is placed in the aquaculture area, the water pump 5 starts operating under the power source. Water containing fish feces is drawn from the inlet 7 of the pump pipe to the outlet 6, and then enters the tank 1. It is filtered through the first filter screen 2 and the second filter screen 3 in sequence, and then flows back into the water through the drain hole 4 at the bottom of the tank 1. Larger fish feces particles remain on the first filter screen 2, while smaller fish feces particles remain on the second filter screen 3. After the fish feces accumulate to a certain extent (or after a set period of time), the scraper 9, powered by the power source, starts moving from the higher side of the first filter screen 2 and the second filter screen 3 in a direction parallel to the filter screen. The edge of the scraper 9, which passes through the filter screen 901, adheres to the filter screen. Under the force of the scraper 9, the fish feces move along the slope of the first filter screen 2 and the second filter screen 3 towards the feces collection box 8, and finally fall into the feces collection box 8.
[0040] In this embodiment, the manure collection box 8 and the water outlet 6 of the water pump are located at opposite ends of the filter screen. The area of the filter screen is much larger than the diameter of the water outlet 6 of the water pump, and the filter screen can also be set to be very long. This can prevent the water flowing out of the water outlet 6 from entering the manure collection box 8 and avoid fish feces from coming into contact with the water again.
[0041] This fish waste collection device offers significant benefits. Firstly, the casing (1) can be made of wood, ensuring stable buoyancy on the water surface, adapting to various aquaculture environments, and is cost-effective, readily available, and easy to manufacture. The collection process is efficient and convenient; through regular, repeated operation, fish waste can be continuously collected, effectively reducing waste accumulation in the aquaculture area, minimizing water pollution from harmful substances produced during waste decomposition, providing a healthier and more suitable living environment for fish, and contributing to improved fish growth rates and aquaculture efficiency.
[0042] In some possible implementations, the bottom of the housing 1 is equipped with a rubber air bladder 10, which allows the housing 1 to float on the water surface. When the device is placed in a fish farming area, the entire device is supported by buoyancy and floats on the water because the bottom air bladder is filled with air. When the water surface fluctuates, the device can move with the water surface, so the water pump 5 can pump water over a wider area, which is beneficial for the full and effective collection of fish feces in the water.
[0043] Specifically, the mesh size of the first filter screen 2 is larger than that of the second filter screen 3. When water enters the tank 1, it is first filtered by the first filter screen 2. Larger fish feces particles remain on the first filter screen 2, while smaller fish feces particles continue to fall with the water and are filtered by the second filter screen 3, remaining on top of it. The different mesh sizes of the filter screens allow for the grading and screening of fish feces, which helps prevent fish feces from accumulating and clogging the filter screens, making collection more efficient and reducing the failure rate and management costs of the device.
[0044] Furthermore, the water outlet 6 of the pumping pipe passes through the side panel of the tank 1 and is located above the first filter screen 2. The water inlet 7 of the pumping pipe is equipped with a third filter screen 11 to prevent fish and impurities from entering the pumping pipe. When the water pump 5 starts working, water containing fish waste will flow into the tank 1 through the inlet 7 and the outlet 6. The third filter screen 11 installed at the inlet 7 helps to intercept some small fish and shrimp in the aquaculture water and prevents some aquatic plants, algae or other impurities in the water from entering the tank 1, thus avoiding their accumulation on the filter screen and causing it to become clogged.
[0045] In use, the first filter screen 2 and the second filter screen 3 share a single manure collection box 8. The manure collection box 8 is equipped with a water-blocking gate 12, which is driven by a power source. This manure collection box 8 facilitates the timely and accurate collection of fish feces filtered out by the filters, separating and storing the fish feces from the water, preventing them from decomposing under the influence of water pumped into the tank 1 and causing more serious pollution. Simultaneously, the water-blocking gate 12 helps prevent splashed water from entering the manure collection box 8, preventing fish feces from re-contacting the water and causing pollution. The power source consists of a shaft 13 and a telescopic cylinder 14. When the telescopic cylinder 14 extends or retracts, it drives the shaft 13 to open and close the water-blocking gate 12. After collecting fish feces for a certain period, the manure collection box can be removed for cleaning.
[0046] As a further improvement to the above solution, the first filter screen 2 and the second filter screen 3 share a scraper 9, which is driven by a power source. The power source includes a motor 15, a lead screw 16, and a nut 17. The nut 17 is fixed to the scraper 9, and the lead screw 16 is parallel to the filter screen. When the motor 15 drives the lead screw 16 to rotate, the nut 17 drives the scraper 9 to move along the filter screen. This device has a simple structure, is not prone to failure, and is easy to maintain. The scraper 9 can promptly and thoroughly clean the fish feces remaining on the filter screen, preventing excessive accumulation and clogging of the filter screen. If necessary, bristles can be provided on the surface of the scraper 9 that contacts the filter screen to prevent the scraper 9 from damaging the fish feces during movement.
[0047] Furthermore, the bottom of the tank 1 is provided with a drain hole 4 to discharge the water pumped into the tank 1 by the water pump 5. This facilitates the timely discharge of water from the tank 1, prevents water accumulation from overflowing the manure collection box 8, and allows the filtered water to return to the aquaculture area, thereby reducing the concentration of water pollution and benefiting the survival of fish.
[0048] A solar panel 18 is installed on top of the housing 1, and a battery 19 is installed inside the housing 1 to provide power to the water pump 5 and the scraper 9. The solar panel 18, as a core energy component, directly utilizes natural sunlight for photovoltaic conversion, providing green electricity for the entire system, significantly reducing carbon emissions during operation, and embodying the concepts of energy self-sufficiency and environmental protection. Benefiting from solar power, the water pump 5 operates with clean energy, reducing long-term operating costs, facilitating continuous operation of the device, reducing manual management costs, and contributing to environmental protection.
[0049] The entire device constitutes a low-energy, low-emission, and highly adaptable fecal collection solution.
[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.
Claims
1. A fish feces collection device, characterized in that, include: The container is capable of floating on water. The first filter screen is disposed in the housing and is inclined to the horizontal direction; The second filter screen is located below the first filter screen and is parallel to the first filter screen. A drain outlet is provided on the lower side of the box. A water pump, wherein the water pump is connected to an inlet and an outlet, and the outlet is located above the first filter screen; In addition, there is a manure collection box and a scraper. The manure collection box is supported at the lower ends of the first and second filter screens. The scraper has a filter screen passing area. When the scraper slides along the filter screen, the first and second filter screens pass through the filter screen passing area at the same time, so that the trapped material on their surfaces is scraped into the manure collection box under the force of the scraper.
2. The fish feces collection device as described in claim 1, characterized in that, The box is equipped with rubber airbags on the outside, which allows the box to float on the water.
3. The fish feces collection device as described in claim 1, characterized in that, The mesh size of the first filter screen is larger than that of the second filter screen.
4. The fish feces collection device as described in claim 1, characterized in that, The water outlet passes through the side panel of the tank and is located above the first filter screen.
5. The fish feces collection device as described in claim 1, characterized in that, A third filter screen is installed at the water inlet.
6. The fish feces collection device as described in claim 1, characterized in that, The first filter screen and the second filter screen share a manure collection box, which is equipped with a water baffle, and the water baffle is driven by a first power source.
7. The fish feces collection device as described in claim 1, characterized in that, The first and second filters share a scraper, which is driven by a second power source.
8. A fish feces collection device as described in claim 6, characterized in that, The first power source includes a shaft and a telescopic cylinder. When the telescopic cylinder extends or retracts, the shaft drives the water baffle to open and close.
9. A fish feces collection device as described in claim 7, characterized in that, The second power source includes a motor, a lead screw, and a nut. The nut is fixed to the scraper, and the lead screw is parallel to the filter screen. When the motor drives the lead screw to rotate, the nut drives the scraper to move along the filter screen.
10. A fish feces collection device as described in claim 1, characterized in that, The container is equipped with a solar panel on top and a battery inside to provide power to the water pump and scraper.