Filtering and circulating purification device for mandarin fish culture water body

By designing a threaded rod and gear structure to expand the filtration range, and by using rust-proof toothed plates and rust-proof gears to adjust the length of the U-shaped rod, the problem of limited filtration range in existing devices has been solved, enabling continuous and large-scale purification of aquaculture ponds and adapting to the needs of different water depths.

CN224219229UActive Publication Date: 2026-05-12TIANJIN FISHERIES RES INST (TIANJIN FISHERIES TECH EXTENSION STATION BOHAI SEA FISHERIES RES CENT OF CHINESE ACAD OF FISHERIES SCI)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TIANJIN FISHERIES RES INST (TIANJIN FISHERIES TECH EXTENSION STATION BOHAI SEA FISHERIES RES CENT OF CHINESE ACAD OF FISHERIES SCI)
Filing Date
2025-06-24
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

Existing water filtration and purification devices have limited filtration and purification range during use, and the purified water is easily pumped back into the device, resulting in poor purification effect.

Method used

A structure including a threaded rod, a first toothed plate, a first gear, a rotating shaft, and a rotating rod is designed. The threaded rod is driven to rotate by a waterproof motor, which in turn drives the first toothed plate and the first gear to rotate, changing the water pumping and draining positions and expanding the filtration range. The length of the U-shaped rod can be adjusted to adapt to different water depths through the meshing structure of the rust-proof toothed plate and the rust-proof gear. Combined with the design of rust-proof locking blocks and rust-proof springs, the device can be flexibly fixed.

Benefits of technology

The filtration range has been expanded, preventing the purified water from being pumped back into the device, thus enabling continuous and wide-range filtration and purification of aquaculture ponds, adapting to aquaculture environments of different water depths.

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Abstract

The utility model relates to the technical field of water filtering devices, and discloses a water filtering, circulating and purifying device for mandarin fish culture, which comprises a U-shaped rod, the upper surface of the U-shaped rod is fixedly connected with a hollow box, and the right surface of the hollow box is fixedly provided with a waterproof motor. Through the arrangement of the threaded rod, the first toothed plate, the first gear, the rotating shaft and the rotating rod, when the waterproof motor starts to operate, the threaded rod starts to rotate, at the moment, the first toothed plate starts to move under the driving of the threaded rod, and the first gear is driven by the movement of the first toothed plate; in the process, the water pumping position of the water pumping pipe and the water drainage position of the water drainage pipe can be changed, and therefore the whole water pumping and filtering range of the waterproof water pump is enlarged; and the situation that water just filtered by the filter screen is rapidly pumped into the waterproof water pump again by the water pumping pipe is avoided.
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Description

Technical Field

[0001] This utility model relates to the technical field of water filtration devices, and more specifically, to a water filtration, circulation and purification device for mandarin fish farming. Background Technology

[0002] Fish farming is a production method that involves artificially controlling the aquatic environment to breed, cultivate, and harvest fish. It mainly includes pond farming, cage farming, and recirculating aquaculture systems. It requires scientific management of water quality, feeding of nutritious feed, and disease control. It is characterized by short production cycles and high economic benefits. It can provide a high-quality protein source and alleviate pressure on wild fishery resources, making it an important part of modern agriculture.

[0003] To prevent fish fry from dying due to poor water quality during mandarin fish farming, operators typically install water filtration and circulation purification devices in the ponds. However, while these devices offer basic water filtration, they are usually fixed within the pond, limiting their filtration range and making it easy for purified water to be pumped back into the system. Therefore, improvements are needed. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a water filtration and circulation purification device for mandarin fish farming, which has the advantage of a large purification range.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a water filtration and circulation purification device for mandarin fish farming, comprising a U-shaped rod, a hollow box fixedly connected to the upper surface of the U-shaped rod, a waterproof motor fixedly installed on the right surface of the hollow box, a threaded rod fixedly sleeved at the other end of the output shaft of the waterproof motor, the left end of the threaded rod penetrating the hollow box and extending to the left surface of the hollow box, a first toothed plate located inside the hollow box being threadedly sleeved on the outer surface of the threaded rod, a first gear meshing with the outer surface of the first toothed plate, the upper and lower outer surfaces of the first toothed plate and the first gear being movably connected to the inner surface of the hollow box, a rotating shaft movably sleeved at the middle of the upper surface of the hollow box, the bottom end of the rotating shaft penetrating the hollow box and the first gear in sequence and extending to the lower surface of the first gear, the outer surface of the rotating shaft being fixedly sleeved with the inner surface of the first gear, a rotating rod fixedly sleeved on the upper side of the outer surface of the rotating shaft, and a waterproof water pump fixedly installed at the left end of the upper surface of the rotating rod.

[0006] As a preferred embodiment of this utility model, a pumping pipe is fixedly connected to the rear side of the outer surface of the waterproof water pump, and a drain pipe is fixedly connected to the lower surface of the waterproof water pump. The bottom end of the drain pipe passes through the rotating rod and extends to the bottom of the rotating rod. A fixed threaded pipe is movably sleeved on the lower side of the outer surface of the drain pipe. The upper surface of the fixed threaded pipe is fixedly connected to the lower surface of the rotating rod. A filter box is threadedly sleeved on the outer surface of the fixed threaded pipe, and a filter screen is fixedly connected to the outer surface of the filter box.

[0007] As a preferred embodiment of this utility model, the inner surface of the U-shaped rod is movably connected to an anti-rust toothed plate, and the outer surfaces of the front and rear sides of the anti-rust toothed plate are fixedly connected to limiting strips located inside the U-shaped rod. The outer surface of the limiting strips is movably connected to the inner surface of the U-shaped rod. The bottom end of the anti-rust toothed plate is fixedly connected to a counterweight plate, and the upper surface of the counterweight plate is movably connected to a long rivet. The bottom end of the long rivet penetrates the counterweight plate and extends to the bottom of the counterweight plate.

[0008] As a preferred technical solution of this utility model, the outer surface of the anti-rust toothed plate is meshed with an anti-rust gear, the inner surface of the anti-rust gear is fixedly sleeved with a rotating shaft located on the right side of the U-shaped rod, and the front and rear sides of the outer surface of the rotating shaft are movably sleeved with connecting plates, and the left end of the connecting plate is fixedly connected to the right surface of the U-shaped rod.

[0009] As a preferred technical solution of this utility model, an anti-rust tooth block is meshed on the upper side of the outer surface of the anti-rust gear, and sliding blocks are fixedly connected to the outer surfaces of the front and rear sides of the anti-rust tooth block. A limiting plate is movably connected to the outer surface of the sliding block, and the left surface of the limiting plate and the right surface of the U-shaped rod are fixedly connected.

[0010] As a preferred embodiment of this utility model, a connecting plate is fixedly connected to the top of the limiting plate, and a rust-proof spring is fixedly connected to the lower surface of the connecting plate. The bottom end of the rust-proof spring is fixedly connected to the upper surface of the rust-proof locking block.

[0011] As a preferred technical solution of this utility model, L-shaped plates are fixedly connected to the outer surfaces of both the front and rear sides of the U-shaped rod. A resin protective shell is movably connected to the inner surface between the L-shaped plate and the U-shaped rod. A resin bolt is movably sleeved on the outer surface of the L-shaped plate. The other end of the resin bolt passes through the L-shaped plate and the resin protective shell in sequence and extends into the interior of the resin protective shell. The outer surface of the resin bolt and the inner surface of the resin protective shell are threaded together.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model, by setting up a threaded rod, a first toothed plate, a first gear, a rotating shaft, and a rotating rod, allows the threaded rod to rotate when the waterproof motor starts running. At this time, the first toothed plate will move under the drive of the threaded rod, and the movement of the first toothed plate will drive the first gear. This causes the first gear, rotating shaft, and rotating rod to rotate as a whole. During this process, the water pumping position of the pumping pipe and the water draining position of the draining pipe will change, thereby expanding the overall water pumping and filtration range of the waterproof water pump and preventing the water that has just been filtered by the filter screen from being quickly pumped back into the waterproof water pump through the pumping pipe.

[0014] 2. This utility model, by setting up an anti-rust toothed plate, a limiting strip, an anti-rust gear, an anti-rust locking tooth block, and an anti-rust spring, allows the operator to remove the resin bolt and resin protective shell and pull the anti-rust locking tooth block upwards. When the anti-rust locking tooth block and the anti-rust gear can no longer contact each other, the rotational lock of the anti-rust gear on the anti-rust locking tooth block is released. At this time, the operator rotates the rotating shaft and the anti-rust gear. Since the anti-rust gear and the anti-rust toothed plate mesh with each other, the entire anti-rust toothed plate will begin to move downwards under the drive of the anti-rust gear. This changes the overall length of the U-shaped rod and the anti-rust toothed plate, thus making the U-shaped rod and the overall anti-rust toothed plate suitable for aquaculture ponds of different depths. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the back of this utility model;

[0017] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 4 This is a cross-sectional view of the hollow box of this utility model.

[0019] Figure 5 This is a cross-sectional structural diagram of the resin bolt of this utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the rust-proof spring of this utility model;

[0021] Figure 7 for Figure 3 A magnified schematic diagram of the partial structure at point A in the middle;

[0022] Figure 8 for Figure 3 A magnified schematic diagram of the structure at point B in the middle.

[0023] In the diagram: 1. U-shaped rod; 2. Hollow box; 3. Waterproof motor; 4. Threaded rod; 5. No. 1 toothed plate; 6. No. 1 gear; 7. Rotating shaft; 8. Waterproof water pump; 9. Pumping pipe; 10. Drainage pipe; 11. Fixed threaded pipe; 12. Filter box; 13. Filter screen; 14. Rust-proof toothed plate; 15. Limiting strip; 16. Counterweight plate; 17. Long rivet; 18. Rust-proof gear; 19. Rotating shaft; 20. Connecting plate; 21. Rust-proof locking tooth block; 22. Sliding block; 23. Limiting plate; 24. Connecting plate; 25. Rust-proof spring; 26. L-shaped plate; 27. Resin protective shell; 28. Resin bolt; 29. ​​Rotating rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1 to 8 As shown, this utility model provides a water filtration and circulation purification device for mandarin fish farming, including a U-shaped rod 1. A hollow box 2 is fixedly connected to the upper surface of the U-shaped rod 1. A waterproof motor 3 is fixedly installed on the right surface of the hollow box 2. A threaded rod 4 is fixedly sleeved at the other end of the output shaft of the waterproof motor 3. The left end of the threaded rod 4 passes through the hollow box 2 and extends to the left surface of the hollow box 2. A first toothed plate 5 located inside the hollow box 2 is threadedly sleeved on the outer surface of the threaded rod 4. The outer surface of the first toothed plate 5 is engaged with... There is a first gear 6, a first gear plate 5, and the outer surfaces of the upper and lower sides of the first gear 6 are movably connected to the inner surface of the hollow box 2. A rotating shaft 7 is movably sleeved in the middle of the upper surface of the hollow box 2. The bottom end of the rotating shaft 7 passes through the hollow box 2 and the first gear 6 in sequence and extends to the lower surface of the first gear 6. The outer surface of the rotating shaft 7 is fixedly sleeved with the inner surface of the first gear 6. A rotating rod 29 is fixedly sleeved on the upper side of the outer surface of the rotating shaft 7. A waterproof water pump 8 is fixedly installed on the left end of the upper surface of the rotating rod 29.

[0026] When the operator starts the waterproof motor 3, the threaded rod 4 will rotate, causing the first gear plate 5 to move to the left. Since the first gear plate 5 and the first gear 6 are meshed, the movement of the first gear plate 5 will drive the first gear 6, thereby causing the first gear 6, the rotating shaft 7 and the rotating rod 29 to start rotating as a whole.

[0027] Among them, a water pumping pipe 9 is fixedly connected to the rear side of the outer surface of the waterproof water pump 8, and a drain pipe 10 is fixedly connected to the lower surface of the waterproof water pump 8. The bottom end of the drain pipe 10 passes through the rotating rod 29 and extends to the bottom of the rotating rod 29. A fixed threaded pipe 11 is movably sleeved on the lower side of the outer surface of the drain pipe 10. The upper surface of the fixed threaded pipe 11 is fixedly connected to the lower surface of the rotating rod 29. A filter box 12 is threadedly sleeved on the outer surface of the fixed threaded pipe 11. A filter screen 13 is fixedly connected to the outer surface of the filter box 12.

[0028] When the waterproof water pump 8 is running, water near the bottom of the water pumping pipe 9 will be drawn and enter the interior of the filter box 12 through the water pumping pipe 9, the waterproof water pump 8 and the drain pipe 10. At this time, the dirt in the water will be filtered by the filter screen 13 and left inside the filter box 12. The operator can improve the overall water purification and filtration capacity of the filter box 12 by placing filter media such as activated carbon inside the filter box 12.

[0029] The inner surface of the U-shaped rod 1 is movably connected to a rust-proof toothed plate 14. The outer surfaces of the front and rear sides of the rust-proof toothed plate 14 are fixedly connected to a limiting strip 15 located inside the U-shaped rod 1. The outer surface of the limiting strip 15 is movably connected to the inner surface of the U-shaped rod 1. The bottom end of the rust-proof toothed plate 14 is fixedly connected to a counterweight plate 16. The upper surface of the counterweight plate 16 is movably connected to a long rivet 17. The bottom end of the long rivet 17 penetrates the counterweight plate 16 and extends to the bottom of the counterweight plate 16.

[0030] The design of the limiting strip 15 restricts the movement direction of the anti-rust toothed plate 14, while the design of the long rivet 17 and the counterweight plate 16 allows the operator to drive the long rivet 17 deep into the soil at the bottom of the pool, thereby fixing the counterweight plate 16 and the U-shaped rod 1 in the pool.

[0031] Among them, the outer surface of the anti-rust tooth plate 14 is meshed with an anti-rust gear 18, and the inner surface of the anti-rust gear 18 is fixedly sleeved with a rotating shaft 19 located on the right side of the U-shaped rod 1. Both the front and rear sides of the outer surface of the rotating shaft 19 are movably sleeved with a sleeve plate 20, and the left end of the sleeve plate 20 is fixedly connected to the right surface of the U-shaped rod 1.

[0032] The design of the anti-rust toothed plate 14 and the anti-rust gear 18 allows the anti-rust toothed plate 14 to move downwards as a whole under the meshing action of the anti-rust gear 18 when the operator rotates the rotating shaft 19 and the anti-rust gear 18.

[0033] Among them, the upper side of the outer surface of the anti-rust gear 18 is meshed with an anti-rust tooth block 21, and the outer surfaces of the front and rear sides of the anti-rust tooth block 21 are fixedly connected with sliding blocks 22. The outer surface of the sliding block 22 is movably connected with a limit plate 23, and the left surface of the limit plate 23 is fixedly connected to the right surface of the U-shaped rod 1.

[0034] The design of the anti-rust tooth block 21 ensures that when the anti-rust tooth block 21 and the anti-rust gear 18 are engaged, the anti-rust gear 18 and the rotating shaft 19 cannot rotate.

[0035] The top of the limiting plate 23 is fixedly connected to the connecting plate 24, the lower surface of the connecting plate 24 is fixedly connected to the anti-rust spring 25, and the bottom end of the anti-rust spring 25 is fixedly connected to the upper surface of the anti-rust tooth block 21.

[0036] The design of the anti-rust spring 25 allows the anti-rust locking block 21 to move downward under the elastic force of the anti-rust spring 25, thereby automatically restoring the meshing between the anti-rust locking block 21 and the anti-rust gear 18.

[0037] The outer surfaces of the front and rear sides of the U-shaped rod 1 are fixedly connected to L-shaped plates 26. The inner surfaces of the L-shaped plates 26 and the U-shaped rod 1 are movably connected to resin protective shells 27. The outer surfaces of the L-shaped plates 26 are movably fitted with resin bolts 28. The other end of the resin bolts 28 passes through the L-shaped plates 26 and the resin protective shells 27 in sequence and extends into the interior of the resin protective shells 27. The outer surfaces of the resin bolts 28 and the inner surfaces of the resin protective shells 27 are threaded together.

[0038] The design of the resin protective shell 27 serves to shield the anti-rust tooth block 21, thereby preventing fish in the pond from accidentally hitting the anti-rust tooth block 21 and causing the anti-rust tooth block 21 to disengage from the anti-rust gear 18.

[0039] Working principle and usage process of this utility model:

[0040] First, the operator removes the resin bolt 28 and the resin protective shell 27, and then pulls the anti-rust locking block 21 upward so that the anti-rust locking block 21 is no longer engaged with the anti-rust gear 18. At this time, the rotation lock of the anti-rust gear 18 is released. Then, the operator rotates the rotating shaft 19 and the anti-rust gear 18. At this time, the anti-rust tooth plate 14 will start to move downward under the engagement of the anti-rust gear 18. This makes the overall length of the U-shaped rod 1 and the anti-rust tooth plate 14 gradually increase until the overall length of the U-shaped rod 1 is sufficient to ensure that the filter screen 13 is above the water surface and the bottom end of the water pumping pipe 9 is below the water surface.

[0041] Then, the operator reinstalls the resin protective shell 27 and resin bolts 28, and fixes the counterweight plate 16 to the bottom of the pool using long rivets 17. The operator then starts the waterproof motor 3 and the waterproof water pump 8. The operation of the waterproof motor 3 causes the threaded rod 4 to rotate. At this time, the first toothed plate 5 will move under the drive of the threaded rod 4. Simultaneously, the movement of the first toothed plate 5 will drive the first gear 6, thereby causing the first gear 6, the rotating shaft 7, and the rotating rod 29 to rotate as a whole. This causes the water pumping position of the water pumping pipe 9 and the water draining position of the drain pipe 10 to move in the pool. The operation of the waterproof water pump 8 causes the water near the bottom of the water pumping pipe 9 to enter the interior of the filter box 12 through the water pumping pipe 9, the waterproof water pump 8, and the drain pipe 10. At this time, the impurities in the water will be filtered by the filter screen 13 and left inside the filter box 12, while the water will flow out directly after filtration and return to the pool, thereby achieving large-scale continuous filtration and purification of the water in the aquaculture pool.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water filtration and circulation purification device for mandarin fish farming, comprising a U-shaped rod (1), characterized in that: A hollow box (2) is fixedly connected to the upper surface of the U-shaped rod (1). A waterproof motor (3) is fixedly installed on the right surface of the hollow box (2). A threaded rod (4) is fixedly sleeved on the other end of the output shaft of the waterproof motor (3). The left end of the threaded rod (4) passes through the hollow box (2) and extends to the left surface of the hollow box (2). A first gear plate (5) located inside the hollow box (2) is threaded onto the outer surface of the threaded rod (4). A first gear (6) is meshed with the outer surface of the first gear plate (5). The first gear plate (5) and the first gear (6) are connected to each other. The outer surfaces of the gear (6) on both the upper and lower sides are movably connected to the inner surface of the hollow box (2). A rotating shaft (7) is movably sleeved in the middle of the upper surface of the hollow box (2). The bottom end of the rotating shaft (7) passes through the hollow box (2) and the first gear (6) in sequence and extends to the lower surface of the first gear (6). The outer surface of the rotating shaft (7) and the inner surface of the first gear (6) are fixedly sleeved. A rotating rod (29) is fixedly sleeved on the upper side of the outer surface of the rotating shaft (7). A waterproof water pump (8) is fixedly installed on the left end of the upper surface of the rotating rod (29).

2. The water filtration and circulation purification device for mandarin fish farming according to claim 1, characterized in that: A water pumping pipe (9) is fixedly connected to the rear side of the outer surface of the waterproof water pump (8). A drain pipe (10) is fixedly connected to the lower surface of the waterproof water pump (8). The bottom end of the drain pipe (10) passes through the rotating rod (29) and extends to the bottom of the rotating rod (29). A fixed threaded pipe (11) is movably sleeved on the lower side of the outer surface of the drain pipe (10). The upper surface of the fixed threaded pipe (11) is fixedly connected to the lower surface of the rotating rod (29). A filter box (12) is threadedly sleeved on the outer surface of the fixed threaded pipe (11). A filter screen (13) is fixedly connected to the outer surface of the filter box (12).

3. The water filtration and circulation purification device for mandarin fish farming according to claim 1, characterized in that: The inner surface of the U-shaped rod (1) is movably connected to a rust-proof toothed plate (14). The outer surfaces of the front and rear sides of the rust-proof toothed plate (14) are fixedly connected to a limiting strip (15) located inside the U-shaped rod (1). The outer surface of the limiting strip (15) and the inner surface of the U-shaped rod (1) are movably connected. The bottom end of the rust-proof toothed plate (14) is fixedly connected to a counterweight plate (16). The upper surface of the counterweight plate (16) is movably connected to a long rivet (17). The bottom end of the long rivet (17) penetrates the counterweight plate (16) and extends to the bottom of the counterweight plate (16).

4. The water filtration and circulation purification device for mandarin fish farming according to claim 3, characterized in that: The outer surface of the anti-rust toothed plate (14) is meshed with an anti-rust gear (18). The inner surface of the anti-rust gear (18) is fixedly sleeved with a rotating shaft (19) located on the right side of the U-shaped rod (1). The front and rear sides of the outer surface of the rotating shaft (19) are movably sleeved with a sleeve plate (20). The left end of the sleeve plate (20) is fixedly connected to the right surface of the U-shaped rod (1).

5. A water filtration and circulation purification device for mandarin fish farming according to claim 4, characterized in that: The upper side of the outer surface of the anti-rust gear (18) is meshed with an anti-rust tooth block (21). The outer surfaces of the front and rear sides of the anti-rust tooth block (21) are fixedly connected with sliding blocks (22). The outer surface of the sliding block (22) is movably connected with a limiting plate (23). The left surface of the limiting plate (23) and the right surface of the U-shaped rod (1) are fixedly connected.

6. A water filtration and circulation purification device for mandarin fish farming according to claim 5, characterized in that: The top of the limiting plate (23) is fixedly connected to a connecting plate (24), and the lower surface of the connecting plate (24) is fixedly connected to an anti-rust spring (25). The bottom end of the anti-rust spring (25) is fixedly connected to the upper surface of the anti-rust tooth block (21).

7. The water filtration and circulation purification device for mandarin fish farming according to claim 1, characterized in that: L-shaped plates (26) are fixedly connected to the outer surfaces of both the front and rear sides of the U-shaped rod (1). A resin protective shell (27) is movably connected to the inner surface between the L-shaped plate (26) and the U-shaped rod (1). A resin bolt (28) is movably sleeved on the outer surface of the L-shaped plate (26). The other end of the resin bolt (28) passes through the L-shaped plate (26) and the resin protective shell (27) in sequence and extends into the interior of the resin protective shell (27). The outer surface of the resin bolt (28) and the inner surface of the resin protective shell (27) are threaded together.