A floating sludge cleaning device for large water surfaces
By installing scum removal equipment with swallowing and collection mechanisms on the hull, the problems of environmental adaptability and cost-effectiveness of scum removal equipment in large-scale aquaculture have been solved, achieving low-cost and high-efficiency scum removal and aquatic ecological protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGXI ACADEMY OF FISHERY SCI
- Filing Date
- 2025-10-29
- Publication Date
- 2026-07-21
AI Technical Summary
Existing large-scale aquaculture scum removal equipment suffers from poor environmental adaptability, high operating costs, and poor functional synergy, making it difficult to simultaneously meet the demands for high efficiency, low cost, and eco-friendliness.
A scum removal device comprising an ingestion mechanism, a guide, and a collection mechanism has been designed and installed on the hull. The ingestion mechanism automatically collects scum, and the detachable design of the collection mechanism improves operational efficiency. It is suitable for multi-point decentralized cleaning in large-scale aquaculture.
It achieves low-cost and efficient scum removal, adapts to complex aquaculture environments, reduces additional energy and labor costs, avoids water hypoxia problems, and improves operational efficiency.
Smart Images
Figure CN224531625U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aquaculture technology, and in particular to a scum removal device for large-scale aquaculture. Background Technology
[0002] In aquaculture, large-scale aquaculture (such as reservoirs, lakes, and large ponds) has become an important model for large-scale aquatic product production due to its extensive area and large water volume. However, the aquaculture process continuously generates a large amount of scum, the main components of which include uneaten feed, fish excrement, aquatic plant remains (such as duckweed and water hyacinth fragments), dead microorganisms, and domestic waste from the outside. If this scum accumulates on the water surface for a long time, it will form a dense covering layer, which on the one hand hinders the gas exchange between the water and the air, causing a sharp drop in dissolved oxygen content and leading to problems such as fish surfacing and death; on the other hand, the scum is prone to fermentation and deterioration under high temperature conditions, releasing toxic and harmful substances such as ammonia nitrogen and hydrogen sulfide, disrupting the aquatic ecological balance, reducing the survival rate of aquaculture and the quality of aquatic products, and in severe cases, leading to large-scale aquaculture losses.
[0003] Therefore, scum removal is a crucial step in large-scale aquaculture. Existing technologies have developed various scum removal equipment, which can be mainly divided into the following categories: First, large scum removal vessels. These vessels typically have large collection hulls and power systems, making them suitable for large-area scum removal in open waters. However, they have significant drawbacks: they consume a lot of energy and have high operating costs when relying on fuel power. Furthermore, their large size makes them less maneuverable in shallow waters or areas with dense aquaculture cages, increasing the risk of collisions. Additionally, some scum removal vessels have complex unloading mechanisms, with single unloading times exceeding 15 minutes, leading to reduced operational efficiency and difficulty in handling concentrated scum outbreaks.
[0004] Secondly, there are weir-type skimmers (such as duck weir skimmers and floating suction oil skimmers). These devices achieve the suction and collection of scum through self-adjusting weir openings. They are relatively lightweight in structure, but they are less adaptable to different types of scum: they can only effectively handle light scum such as duckweed and oil. If they encounter heavy scum mixed with silt, branches, and gravel, the weir opening is prone to blockage and insufficient suction power. Moreover, most weir-type skimmers require an external fixed pump station and cannot move independently, which limits the cleaning range and makes it difficult to meet the cleaning needs of "multi-point dispersed scum" in large-scale aquaculture.
[0005] Thirdly, there are small surface harvesting robots. These devices are mostly battery-powered, highly flexible, and can operate in narrow areas such as around net cages. However, they generally suffer from insufficient battery life. Existing products typically run for less than 8 hours on a single charge, which cannot cover the full-day operation needs of large-scale aquaculture. At the same time, their functions are relatively limited, only able to cut and collect scum. The collected scum needs to be manually transported to the shore for processing, increasing additional labor costs. Furthermore, the need for dissolved oxygen replenishment during scum removal is not considered, which can easily lead to oxygen deficiency in localized areas after cleaning.
[0006] In summary, current large-scale aquaculture scum removal equipment generally suffers from technical pain points such as poor environmental adaptability (poor flexibility in shallow / dense water areas, insufficient adaptation to water level fluctuations), high operating costs (high energy consumption, frequent maintenance of vulnerable parts), and poor functional synergy (disconnection between cleaning and aeration / transfer). It is difficult to meet the "high efficiency, low cost, and eco-friendly" requirements of large-scale aquaculture. Therefore, developing a scum removal equipment that can adapt to complex aquaculture environments, has low energy consumption, and integrates multiple functions has become an urgent technical problem to be solved in this field. Utility Model Content
[0007] The purpose of this invention is to address the problems existing in the background technology by proposing a scum removal device for large-scale aquaculture.
[0008] The technical solution of this utility model is: a scum removal device for large-scale aquaculture, which is installed on the hull of a ship to perform scum removal operations. The device is characterized by comprising a swallowing mechanism, a guide, and a collection mechanism. The swallowing mechanism includes a triangular plate and a cover body arranged symmetrically. An installation rod is fixedly installed on the triangular plate, and the cover body is movably installed on the installation rod. A scum inlet is formed between the two covers. The triangular plate has a positioning groove. A telescopic component is fixedly installed inside the triangular plate. A stop is fixedly installed at the end of the positioning groove on the telescopic component. The stop does not include a force-bearing seat. A push rod is fixedly installed on the outside of the triangular plate. A slide for pushing the force-bearing seat is slidably installed on the push rod. The guide includes an L-shaped slide fixed to a triangular plate and arranged at an angle, and a guide seat fixed to the L-shaped slide. A connecting leg is fixedly installed on the guide seat and the connecting leg is installed on the hull. The collection mechanism includes a floating frame, a collection net, and floating plates. Both sides of the floating frame are equipped with positioning side plates that slide within positioning slots.
[0009] Preferably, the end of the L-shaped slide corresponds to the positioning groove, and the cross-sectional width of the L-shaped slide is greater than the cross-sectional width of the positioning groove.
[0010] Preferably, the upper part of the collection net is provided with several floating plates, the lower part of the collection net is provided with several counterweight plates, and the floating plates are provided with weight-increasing blocks.
[0011] Preferably, the telescopic component is embedded in the triangular plate body and located on the positioning groove side. The telescopic component includes a mounting cylinder fixed in the triangular plate body and a mounting column slidably installed in the mounting cylinder. A spring is fixedly installed between the mounting cylinder and the mounting column. The mounting column and the stop are fixedly connected.
[0012] Preferably, the scum removal device is equipped with an auxiliary rod for moving the slide and the collection mechanism.
[0013] Preferably, the end of the cover is provided with a connecting assembly, which includes a rotating rod hinged to the cover, and a mask is fixedly installed on the rotating rod.
[0014] Compared with existing technologies, the advantages of this invention are as follows: This solution forms a cleaning device through an ingestion mechanism, a guide, and a collection mechanism. This cleaning device can be adapted to existing ship hulls, has low manufacturing costs, and consumes no additional energy. Furthermore, in practical use, the scum can be automatically collected by moving the ship towards the scum surface, and the detachable design of the collection mechanism allows for continuous cleaning operations, greatly improving operational efficiency, while maintaining low cost and no impact on the environment. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the swallowing mechanism of this utility model; Figure 3 This is a schematic diagram of the installation structure of the telescopic component of this utility model; Figure 4 This is a schematic diagram of the structure of the telescopic component of this utility model; Figure 5 This is a schematic diagram of the connecting component of this utility model; Figure 6 This is a schematic diagram of the collection net of this utility model after it has been opened; Figure 7 This is a schematic diagram of the operation of this utility model; Figure 8 This is a magnified structural diagram of point B in section 7 of the figure.
[0016] Reference numerals: 1. Swallowing mechanism; 2. Guide; 3. Collection mechanism; 4. Connecting assembly; 11. Triangular plate; 12. Cover; 13. Mounting rod; 14. Positioning groove; 15. Stop; 16. Force-bearing seat; 17. Telescopic assembly; 171. Mounting cylinder; 172. Mounting column; 173. Spring; 18. Push rod; 19. Slide; 21. L-shaped slide; 22. Guide seat; 23. Connecting leg; 31. Floating frame; 32. Collection net; 33. Floating plate; 34. Positioning side plate; 41. Rotating rod; 42. Mask plate; 100. Auxiliary rod; 200. Floating plate; 300. Counterweight plate. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0018] See attached document Figures 1-8 A scum removal device for large-scale aquaculture, used for installation on a ship hull for scum removal operations, comprising a cleaning device consisting of an ingestion mechanism 1, a guide 2, and a collection mechanism 3; The swallowing mechanism 1 includes a triangular plate 11 and a cover 12 arranged symmetrically. An installation rod 13 is fixedly installed on the triangular plate 11, and the cover 12 is movably installed on the installation rod 13. A scum inlet is formed between the two covers 12. The triangular plate 11 has a positioning groove 14. A telescopic component 17 is fixedly installed inside the triangular plate 11. A stop 15 located at the end of the path of the positioning groove 14 is fixedly installed on the telescopic component 17. The stop 15 does not include a force-bearing seat 16. A push rod 18 is fixedly installed on the outside of the triangular plate 11. A slide 19 for pushing the force-bearing seat 16 is slidably installed on the push rod 18. Guide 2 includes an L-shaped slide 21 fixed on a triangular plate 11 and arranged at an inclination, and a guide seat 22 fixed on the L-shaped slide 21. A connecting leg 23 is fixedly installed on the guide seat 22 and the connecting leg 23 is installed on the hull. The collection mechanism 3 includes a floating frame 31, a collection net 32, and a floating plate 33. Both sides of the floating frame 31 are equipped with positioning side plates 34 that slide within the positioning groove 14.
[0019] It should be further noted that the end of the L-shaped slide 21 corresponds to the positioning groove 14, the cross-sectional width of the L-shaped slide 21 is greater than the cross-sectional width of the positioning groove 14, the upper part of the collection net 32 is provided with several floating plates 200, the lower part of the collection net 32 is provided with several counterweight plates 300, and the floating plate 33 is provided with weight-increasing blocks.
[0020] It should be further noted that the telescopic component 17 is embedded in the triangular plate body 11 and located on the side of the positioning groove 14. The telescopic component 17 includes a mounting cylinder 171 fixed in the triangular plate body 11 and a mounting column 172 slidably installed in the mounting cylinder 171. A spring 173 is fixedly installed between the mounting cylinder 171 and the mounting column 172. The mounting column 172 is fixedly connected to the stop seat 15. The scum cleaning equipment is equipped with an auxiliary rod 100 for pushing the slide seat 19 and the collection mechanism 3 to move.
[0021] To address the challenge of existing technologies that fail to simultaneously meet the demands of high efficiency, low cost, and eco-friendliness in large-scale aquaculture, this solution aims to provide a low-cost device that can be efficiently integrated with existing facilities and equipment, enabling rapid and efficient scum removal.
[0022] When implementing this solution, the first step is to install it on the hull of a vessel commonly used on large water surfaces, as such vessels are already common equipment on large water surfaces.
[0023] like Figure 7 As shown in the diagram, A represents the hull. Connecting leg 23 can be fixed to the hull with bolts, requiring only simple modifications to the hull, resulting in low cost. Furthermore, this solution is applicable to a wide range of scenarios, not just aquaculture, but also for river scum removal. Installation of the cleaning equipment requires a clean water surface. After installation, the vessel travels towards the scum-covered water surface, where cleaning operations can be performed.
[0024] Specifically, after the connecting leg 23 is installed, the swallowing mechanism 1 will extend out of the hull, with a portion of it submerged below the water surface, resulting in the scum inlet being half above and half below the water. Then, the collection mechanism 3 is installed by placing the positioning side plates 34 on two L-shaped slides 21. The ends of the L-shaped slides 21 are aligned with the inlet of the positioning slot 14, and the receiving surface of the L-shaped slides 21 is wide enough that the float 33 will move on the L-shaped slides 21. The auxiliary rod 100 is inserted into the collection mechanism 3 and contacts the float 33, allowing it to be pushed... The collecting mechanism 3 moves towards the positioning groove 14, or pushes the float frame 31. When it moves to the scum inlet, because the positioning groove 14 is narrow, the float 33 will not enter the positioning groove 14, while the positioning side plate 34 moves completely into the positioning groove 14. Then the auxiliary rod 100 continues to push the collecting mechanism 3 into the scum inlet and through it. After the collecting mechanism 3 passes through the scum inlet, the positioning side plate 34 moves to the end of the positioning groove 14 and abuts against the stop 15. At this time, the float 33 and the collecting net 32 will fall into the water, thus completing the installation of the collecting mechanism 3.
[0025] like Figure 7 As shown, Figure 7The collection net 32 is in the working state. During subsequent cleaning, because the float 33 can float on the water surface, and the weight of the float 33 is increased due to the weight-adding blocks, and the collection net 32 is equipped with a float plate 200 and a counterweight plate 300 at the top and bottom respectively, when the hull moves, the float 33 will pull the collection net 32 from the rear, the float plate 200 from the top, and the counterweight plate 300 from the bottom, causing the collection net 32 to be opened.
[0026] Subsequently, as the ship moves towards the scum surface, the scum it passes over is swallowed by the scum inlet, allowing it to enter the collection net 32 for collection. Furthermore, because the cover 12 is movably mounted on the mounting rod 13, specifically in this embodiment, the mounting rod 13 penetrates the cover 12 and is equipped with a rubber shock-absorbing pad that is sleeved on the mounting rod 13. In this embodiment, mounting rods 13 are provided on both sides of the triangular plate 11, and the two mounting rods 13 are at different heights, allowing the cover 12 to remain tilted. Thus, the scum inlet is funnel-shaped, and the cover 12 is also slidably mounted on the mounting rod 13. Therefore, when this inlet encounters large scum, it can be moved and adjusted without becoming blocked.
[0027] As the ship moves, once the collection net 32 is full of scum, the collection mechanism 3 needs to be disassembled and reinstalled. Therefore, several collection mechanisms 3 need to be configured in one operation.
[0028] When disassembling the collection mechanism 3, the auxiliary rod 100 moves in the guide seat 22, pushing the slide 19 to slide in the push rod 18. The slide 19 will move and contact the force-bearing seat 16. The auxiliary rod 100 requires a large pushing force, and external electric or hydraulic equipment can be used. When the auxiliary rod 100 is pushed to move the slide 19 and the force-bearing seat 16, the stop 15 will be driven to move, causing the stop 15 to pull the mounting column 172 out of the mounting cylinder 171. At this time, the spring 173 will be stretched. When the stop 15 moves, the stop 15 and the positioning groove 14 will no longer be in contact, and the stop 15 will no longer block the positioning side plate 34. As a result, due to the gravity in the collection net 32, the positioning side plate 34 will fall from the positioning groove 14. At this time, the collection mechanism 3 will be completely lowered. Since the float frame 31 will also float on the water surface, the entrance of the collection net 32 will be sealed. Then, the collection mechanism 3 can be retrieved by another hull and the scum can be transported out of the water.
[0029] After the collection mechanism 3 is installed again, the equipment can continue to operate, which greatly improves the efficiency of scum removal.
[0030] In addition, the end of the cover 12 in this solution is provided with a connecting component 4, which includes a rotating rod 41 hinged to the cover 12, and a mask 42 is fixedly installed on the rotating rod 41.
[0031] The scum collection route is as follows: scum is swallowed by the scum inlet, passes through it, and then enters the collection net 32 via the float frame 31 for collection. During this process, in order to ensure that there is no large gap between the float frame 31 and the cover 12 after the collection mechanism 3 is installed, and to prevent scum from getting stuck there, a connecting component 4 is provided.
[0032] Specifically, such as Figure 7 As shown, when the collection mechanism 3 is installed, when the floating frame 31 passes through the scum inlet, it will first push up the mask plate 42. Then, when the positioning side plate 34 enters the bottom of the positioning groove 14, the floating frame 31 will no longer be in contact with the mask plate 42, and the mask plate 42 will fall into the floating frame 31.
[0033] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A scum removal device for large-scale aquaculture, used for installation on a ship hull to perform scum removal operations, characterized in that, The cleaning equipment includes a swallowing mechanism (1), a guide (2), and a collection mechanism (3); The swallowing mechanism (1) includes a triangular plate (11) and a cover (12) arranged symmetrically. An installation rod (13) is fixedly installed on the triangular plate (11). The cover (12) is movably installed on the installation rod (13). A scum inlet is formed between the two covers (12). The triangular plate (11) has a positioning groove (14). A telescopic component (17) is fixedly installed inside the triangular plate (11). A stop (15) located at the end of the path of the positioning groove (14) is fixedly installed on the telescopic component (17). The stop (15) does not include the force-bearing seat (16). A push rod (18) is fixedly installed on the outside of the triangular plate (11). A slide (19) for pushing the force-bearing seat (16) is slidably installed on the push rod (18). The guide (2) includes an L-shaped slide (21) fixed on the triangular plate (11) and arranged in an inclined manner, and also includes a guide seat (22) fixed on the L-shaped slide (21), a connecting leg (23) fixedly installed on the guide seat (22), and the connecting leg (23) is installed on the hull; The collection mechanism (3) includes a floating frame (31), a collection net (32) and a floating plate (33). Both sides of the floating frame (31) are equipped with positioning side plates (34) that slide in the positioning groove (14).
2. The scum removal equipment for large-scale aquaculture according to claim 1, characterized in that, The L-shaped slide (21) corresponds to the end of the path and the positioning groove (14), and the cross-sectional width of the L-shaped slide (21) is greater than the cross-sectional width of the positioning groove (14).
3. The scum removal equipment for large-scale aquaculture according to claim 1, characterized in that, The upper part of the collection net (32) is provided with several floating plates (200), the lower part of the collection net (32) is provided with several counterweight plates (300), and the floating plates (33) are provided with weight-increasing blocks.
4. The scum removal equipment for large-scale aquaculture according to claim 1, characterized in that, The telescopic component (17) is embedded in the triangular plate body (11) and located on the side of the positioning groove (14). The telescopic component (17) includes a mounting cylinder (171) fixed in the triangular plate body (11) and a mounting post (172) slidably installed in the mounting cylinder (171). A spring (173) is fixedly installed between the mounting cylinder (171) and the mounting post (172). The mounting post (172) and the stop (15) are fixedly connected.
5. The scum removal equipment for large-scale aquaculture according to claim 1, characterized in that, The scum cleaning device is equipped with an auxiliary rod (100) for moving the slide (19) and the collection mechanism (3).
6. The scum removal equipment for large-scale aquaculture according to claim 1, characterized in that, The end of the cover (12) is provided with a connecting component (4), which includes a rotating rod (41) hinged to the cover (12) and a mask plate (42) is fixedly installed on the rotating rod (41).