Siniperca chuatsi roe collecting device

Abstract

The mandarin fish egg collecting device comprises an egg laying box horizontally arranged on the ground, and a water inlet is formed in one side of the egg laying box; two flotation devices are symmetrically arranged in the oviposition box, and an adjustable flow guide device is fixed below each flotation device; a separating inclined plate is horizontally arranged in the middle of the interior of the spawning box, a collecting device is fixed to the upper portion of the separating inclined plate, a collecting groove is fixed to one side of the collecting device, and a water outlet is formed in the lower portion of the end of the collecting groove; the two same flotation devices and the adjustable flow guide device are adopted, low-damage stripping and precise flotation separation are achieved, and the problems that in a traditional collection mode, the roe damage rate is high, and impurity separation is not thorough are solved; a flotation device and a separation inclined plate are further adopted, and automatic separation of healthy roes, excrement and unfertilized roes is achieved by means of buoyancy difference.

Description

Technical Field

[0001] This invention belongs to the field of aquaculture technology, specifically a mandarin fish egg collection device. Background Technology

[0002] As a valuable freshwater economic fish species, the efficiency of mandarin fish reproduction and egg collection directly affects the aquaculture benefits. This fish species has unique spawning habits, typically completing the spawning process under the stimulation of flowing water. After being laid, the eggs scatter in the water and, due to their near-water density, exhibit a semi-buoyant state. Notably, the eggs are slightly sticky when freshly laid, easily adhering to the spawning ovaries, aquatic plants, or the surface of pond facilities. This characteristic means that collection currently still mainly relies on manual methods.

[0003] However, existing manual collection methods have a series of obvious drawbacks, severely restricting the collection efficiency and subsequent hatching results of fish eggs. This method is labor-intensive and inefficient; workers must repeatedly chase and collect eggs in the pond with nets or hoses, resulting in slow collection speed and a high risk of missing the optimal collection time, leading to the loss of a large number of viable eggs. Furthermore, because it is difficult to maintain uniform force, the nets easily cause physical damage to the fragile fish eggs through squeezing and collisions, thus affecting their normal development and hatching rate. In addition, fish eggs scattered at the bottom or in corners of the pond are difficult to collect completely, resulting in resource waste; the stirring of the pond bottom during egg collection also introduces contaminants into the egg colony, polluting the eggs and increasing the workload of subsequent cleaning and sorting. More importantly, frequent movement of personnel in the spawning pond severely disturbs the parent fish, interfering with or even interrupting their spawning behavior, further negatively impacting reproductive management.

[0004] Therefore, it is necessary to provide a mandarin fish egg collection device to solve the problems mentioned in the background art. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solution: a mandarin fish egg collection device, which includes a spawning box horizontally set on the ground, and an inlet on one side of the spawning box; two flotation devices are symmetrically arranged inside the spawning box, and an adjustable flow guide device is fixed below each flotation device;

[0006] A separation ramp is horizontally installed in the middle of the spawning box. A collection rack is installed above the separation ramp. A collection trough is fixed on one side of the collection rack. An outlet is opened at the lower end of the collection trough.

[0007] Furthermore, as a preferred embodiment, the flotation device includes a first motor vertically fixed above the spawning tank, a flotation tube fixed inside the spawning tank on one side of the first motor, and a first belt drive between the flotation tube and the first motor; a rotating shaft coaxially arranged inside the flotation tube, the upper end of the rotating shaft being fixed to the output end of the first belt drive, and a propeller fixed to the lower end of the rotating shaft; a gas-liquid shared pipe is arranged on the outer circumferential side wall of the flotation tube; an aeration disc is arranged at the lower end of the flotation tube, and the aeration disc is fixedly connected to an adjustable flow guide device.

[0008] Furthermore, as a preferred embodiment, artificial aquatic plants are evenly arranged along the circumference on the upper surface of the aeration disc, and aeration ports are evenly opened around each of the artificial aquatic plants on the aeration disc.

[0009] Furthermore, as a preferred embodiment, the adjustable flow guiding device includes a flow guiding frame fixed to the aeration disc, with a worm gear ring rotatably connected below the flow guiding frame; flow guiding blades are arranged in a circumferential array within the flow guiding frame, with the lower ends of the flow guiding blades extending into the worm gear ring; the upper surface of the flow guiding frame is uniformly provided with sliding grooves along the circumference, and a sliding rod is slidably disposed inside each of the sliding grooves; a connecting plate is provided between each sliding rod and the corresponding flow guiding blade, with both ends of the connecting plate connected to the sliding rod and the flow guiding blade respectively; a fixing rod is provided between adjacent sliding grooves on the lower surface of the flow guiding frame; each fixing rod is rotatably connected to the corresponding flow guiding blade.

[0010] Each of the guide vanes is fixedly provided with a slide rail below it. One end of the slide rail is fixedly connected to the worm gear ring, and the other end of the slide rail is slidably connected to the adjacent slide rail. A worm is provided on the outside of the worm gear ring to mesh with it. The worm is rotatably connected to the spawning box, and a handwheel is provided at one end of the worm.

[0011] Furthermore, as a preferred embodiment, a limit block is provided at the connection between the guide frame and the worm gear ring.

[0012] Furthermore, as a preferred embodiment, the angle between the separation ramp and the lower surface of the spawning box is set to 60°.

[0013] Furthermore, as a preferred embodiment, the collection rack includes a second motor fixed to one side above the spawning tank, a reducer is provided on one side of the second motor, and the output shaft of the second motor is connected to the reducer; a rotating scraper is rotatably provided on the upper end face of the spawning tank away from the flotation device, and a second belt drive device is provided between the rotating scraper and the reducer.

[0014] Furthermore, as a preferred embodiment, a collection trough fixed to the spawning box is provided on one side of the rotating scraper; a push screw is horizontally arranged inside the collection trough, one end of the push screw is rotatably connected to the collection trough, and a third motor is provided at the other end of the push screw; an outlet is provided below the end of the collection trough away from the third motor.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] This invention employs two identical flotation devices and an adjustable flow guide device. During the spawning induction process of broodstock, water is introduced into the shared gas-liquid pipeline, and the rotating propeller generates an upward, gentle water flow, stimulating the broodstock to spawn. During the vortex buffer separation process, the first motors in the two flotation devices rotate in opposite directions, generating two opposing vortices within the spawning tank to wash over the fish eggs, placing them in a semi-floating state. During the buoyancy separation and collection process, air bubbles are introduced into the shared gas-liquid pipeline. These bubbles are evenly distributed within the spawning tank via an aeration plate and the adjustable flow guide device, and the rotating propeller generates an upward, gentle water flow, driving the bubbles to form an upward airlift water flow. This achieves low-damage stripping and precise flotation separation, solving the problems of high fish egg damage rate and incomplete impurity separation in traditional collection methods.

[0017] This invention employs a flotation device and a separation ramp. By utilizing the difference in buoyancy, healthy fish eggs float to the surface and enter the collection tank, while feces and unfertilized eggs slide down the slope of the separation ramp and accumulate at the bottom of the spawning box, thus achieving automatic separation of healthy fish eggs from feces and unfertilized eggs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is an internal schematic diagram of the overall structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the flotation device in this invention;

[0021] Figure 4 This is a schematic diagram of the adjustable flow guiding device in this invention;

[0022] Figure 5 This is a schematic diagram of the bottom structure of the adjustable flow guiding device in this invention;

[0023] Figure 6 This is a top view of the adjustable flow guiding device in this invention;

[0024] Figure 7 This is a schematic diagram of the adjustable flow guiding device under different working states in this invention;

[0025] Figure 8 This is a schematic diagram of the internal structure of the flotation device and the adjustable flow guiding device in this invention;

[0026] In the diagram: 1. Spawning box; 2. Flotation device; 21. First motor; 22. First belt drive; 23. Flotation tube; 24. Gas-liquid shared pipeline; 25. Shaft; 26. Propeller; 3. Adjustable flow guide device; 31. Flow guide frame; 32. Worm gear ring; 33. Flow guide blade; 34. Slide groove; 35. Slide rod; 36. Fixed rod; 37. Slide rail; 38. Worm; 39. Handwheel; 310. Connecting plate; 4. Separation inclined plate; 5. Collection rack; 51. Second motor; 52. Reducer; 53. Second belt drive; 54. Rotating scraper; 6. Collection trough; 61. Push screw; 62. Third motor; 7. Aeration disc; 71. Aeration port; 8. Artificial aquatic plants. Detailed Implementation

[0027] Please see Figures 1-8 In this embodiment of the invention, a mandarin fish egg collection device includes a spawning box 1 horizontally set on the ground, with an inlet 11 on one side of the spawning box 1; two flotation devices 2 are symmetrically arranged inside the spawning box 1, and an adjustable flow guiding device 3 is fixed below each flotation device 2.

[0028] A separation ramp 4 is horizontally installed in the middle of the spawning box 1. A collection rack 5 is installed above the separation ramp 4. A collection trough 6 is fixed on one side of the collection rack 5. An outlet (not shown in the figure) is opened at the lower end of the collection trough 6.

[0029] In this embodiment, the flotation device 2 includes a first motor 21 vertically fixed above the spawning tank 1. A flotation tube 23 fixed inside the spawning tank 1 is provided on one side of the first motor 21. A first belt drive device 22 is provided between the flotation tube 23 and the first motor 21. A rotating shaft 25 is coaxially provided inside the flotation tube 23. The upper end of the rotating shaft 25 is fixed to the output end of the first belt drive device 22. A propeller 26 is fixed to the lower end of the rotating shaft 25. A gas-liquid common pipe 24 is provided on the outer circumferential side wall of the flotation tube 23. An aeration disc 7 is provided at the lower end of the flotation tube 23. The aeration disc 7 is fixedly connected to the adjustable flow guide device 3. When the first motor 21 is started, the first motor 21 drives the rotating shaft 25 to rotate via the first belt drive device 22. The rotating shaft 25 drives the propeller 26 to rotate synchronously.

[0030] During the spawning induction process of the parent fish, water is introduced into the gas-liquid shared pipe 24, and the propeller 26 rotates to generate an upward gentle water flow. The parent fish complete spawning under the stimulation of the flowing water. During the swirling buffer separation process, the first motors 21 in the two flotation devices 2 rotate in opposite directions, generating two vortices with opposite directions in the spawning box 1 to wash the fish eggs, making them in a semi-floating state. During the buoyancy separation and collection process, air bubbles are introduced into the gas-liquid shared pipe 24. The air bubbles are evenly distributed inside the spawning box 1 through the aeration plate 7 and the adjustable flow guide device 3. The propeller 26 rotates to generate an upward gentle water flow, which drives the air bubbles to form an upward airlift water flow.

[0031] In a preferred embodiment, artificial aquatic plants 8 are evenly arranged along the circumference of the upper surface of the aeration disc 7. The artificial aquatic plants 8 are equipped with slow-release pheromones, which release chemical signals while providing physical cover for the parent fish, thus doubly inducing the parent fish to spawn. The freshly laid fish eggs attach to the artificial aquatic plants 8. Aeration ports 71 are evenly opened around each artificial aquatic plant 8 in the aeration disc 7. The rotation of the propeller 26 generates an upward flow of warm water that washes over the artificial aquatic plants 8 through the aeration ports 71, providing a suitable environment for the parent fish to spawn, allowing them to complete spawning under the stimulation of the flowing water. After spawning, the artificial aquatic plants 8 are continuously washed, causing the fish eggs to leave the artificial aquatic plants 8 and be in a semi-floating state.

[0032] In this embodiment, the adjustable flow guiding device 3 includes a flow guiding frame 31 fixed to the aeration disc 7, and a worm gear ring 32 rotatably connected to the lower part of the flow guiding frame 31; flow guiding blades 33 are arranged in a circumferential array inside the flow guiding frame 31, and the lower ends of the flow guiding blades 33 extend into the interior of the worm gear ring 32; the upper surface of the flow guiding frame 31 is evenly provided with sliding grooves 34 along the circumference, and each sliding groove 34 is slidably provided with a sliding rod 35 inside; each sliding rod 35 is provided with a connecting plate 310 between the corresponding flow guiding blade 33, and the two ends of the connecting plate 310 are respectively connected to the sliding rod 35 and the flow guiding blade 33; a fixing rod 36 is provided between adjacent sliding grooves 34 on the lower surface of the flow guiding frame 31; each fixing rod 36 is rotatably connected to the corresponding flow guiding blade 33.

[0033] Each guide vane 33 is fixedly provided with a slide rail 37 below it. One end of the slide rail 37 is fixedly connected to the worm gear ring 32, and the other end of the slide rail 37 is slidably connected to the adjacent slide rail 37. A worm 38 is provided on the outside of the worm gear ring 32 to mesh with it. The worm 38 is rotatably connected to the spawning box 1, and a handwheel 39 is provided at one end of the worm 38.

[0034] During the spawning induction process of parent fish, the handwheel 39 is turned, which drives the worm 38 to rotate synchronously. The worm 38 drives the worm wheel ring 32 that meshes with it to rotate. The worm wheel ring 32 drives the slide rail 37 to rotate, and the adjacent slide rails 37 slide relative to each other. The slide rail 37 drives the guide vane 33 to rotate, so that the two adjacent guide vanes 33 are in close contact. The propeller 26 inside the guide vane 37 rotates to generate an upward gentle water flow.

[0035] During the swirling buffer separation process, the handwheel 39 is rotated in the opposite direction, which drives the worm 38 to rotate synchronously. The worm 38 drives the worm wheel ring 32 that meshes with it to rotate, and the worm wheel ring 32 drives the slide rail 37 to rotate. Adjacent slide rails 37 slide relative to each other, and the slide rail 37 drives the guide vanes 33 to rotate, so that a swirling channel is formed between two adjacent guide vanes 33. The first motors 21 in the two flotation devices 2 rotate in opposite directions. The propeller 26 rotates to generate an upward gentle water flow, while generating two vortices with opposite directions in the spawning box 1 to wash the fish eggs, so that they are in a semi-floating state.

[0036] By rotating the handwheel 39 in the forward or reverse direction, the angle of the guide vane 33 can be adjusted so that it can perform corresponding functions at different stages: during the spawning induction process of parent fish, the guide vane 33 is in a closed state, thus providing a suitable environment for the propeller 26 to rotate and generate an upward gentle water flow; during the swirling buffer separation and buoyancy sorting collection process, the guide vane 33 turns to an open state, forming two vortices with opposite directions in the spawning box 1 to wash the fish eggs, while evenly diffusing the air bubbles into the entire spawning box 1 to form an upward airlift water flow.

[0037] In this embodiment, a limiting block (not shown in the figure) is provided at the connection between the flow guide 31 and the worm gear ring 32. The limiting block is used to ensure that the worm gear ring 32 is always connected to the flow guide 31 during rotation.

[0038] In this embodiment, the angle between the separation inclined plate 4 and the lower surface of the spawning box 1 is set to 60°. On the one hand, the separation inclined plate 4 can effectively isolate the parent fish and the fish eggs. On the other hand, during the buoyancy separation and collection process, the buoyancy difference is used to make the healthy fish eggs float to the collection tank 6, and the feces and unfertilized eggs slide down the inclined surface of the separation inclined plate 4 and accumulate at the bottom of the spawning box, so as to realize the automatic separation of healthy fish eggs from feces and unfertilized eggs.

[0039] In this embodiment, the collection rack 5 includes a second motor 51 fixed to one side above the spawning box 1. A reducer 52 is provided on one side of the second motor 51, and the output shaft of the second motor 51 is connected to the reducer 52. A rotating scraper 54 is rotatably provided on the side of the upper end face of the spawning box 1 away from the flotation device 2. A second belt drive device 53 is provided between the rotating scraper 54 and the reducer 52. When the second motor 51 is started, the second motor 51 drives the rotating scraper 54 to rotate slowly through the reducer 52 and the second belt drive device 53. The rotating scraper 54 separates the healthy fish eggs above the inclined plate 4 and sends them into the collection tank 6.

[0040] In a preferred embodiment, a collection trough 6 fixed to the spawning box 1 is provided on one side of the rotating scraper 54; a push screw 61 is horizontally arranged inside the collection trough 6, one end of the push screw 61 is rotatably connected to the collection trough 6, and a third motor 62 is provided at the other end of the push screw 61; a water outlet is opened below the end of the collection trough 6 away from the third motor 62; when the third motor 62 is started, the third motor 62 drives the push screw 61 to rotate synchronously, and sends the healthy fish eggs inside the collection trough 6 out from the water outlet.

[0041] Specifically, the fish egg collection process consists of the following three steps:

[0042] 1. Induction of spawning in broodstock

[0043] Turning the handwheel 39 causes the worm gear 38 to rotate synchronously, which in turn drives the meshing worm wheel ring 32 to rotate. The worm wheel ring 32 drives the slide rail 37 to rotate, and adjacent slide rails 37 slide relative to each other. The slide rail 37 drives the guide vanes 33 to rotate, so that two adjacent guide vanes 33 are in close contact. The first motor 21 is started, and the first motor 21 drives the rotating shaft 25 to rotate via the first belt drive device 22. The rotating shaft 25 drives the propeller 26 to rotate synchronously. Water is introduced into the gas-liquid common pipe 24. The rotation of the propeller 26 inside the guide vanes 37 generates an upward gentle water flow that washes over the artificial aquatic plants 8 through the aeration port 71, providing a suitable environment for the broodstock to spawn. The artificial aquatic plants 8 are equipped with slow-release pheromones, which release chemical signals while providing physical cover for the broodstock, thus doubly inducing the broodstock to spawn. The broodstock completes spawning under the stimulation of the flowing water, and the freshly laid eggs attach to the artificial aquatic plants 8.

[0044] 2. Swirl buffer separation

[0045] Reverse rotation of handwheel 39 causes worm gear 38 to rotate synchronously, which in turn drives worm wheel ring 32 to rotate. Worm wheel ring 32 drives slide rail 37 to rotate, and adjacent slide rails 37 slide relative to each other. Slide rail 37 drives guide vanes 33 to rotate, forming a vortex channel between two adjacent guide vanes 33. This causes the first motors 21 in the two flotation devices 2 to rotate in opposite directions. The propeller 26 rotates to generate an upward, gentle water flow, while simultaneously generating two vortices with opposite directions in the spawning tank 1 to wash over the fish eggs, keeping them in a semi-floating state.

[0046] 3. Buoyancy-based sorting and collection

[0047] Air bubbles are introduced into the gas-liquid shared pipe 24. The air bubbles are evenly distributed inside the spawning tank 1 via the aeration plate 7 and the adjustable flow guide device 3. The propeller 26 rotates to generate an upward gentle water flow, which drives the air bubbles to form an upward airlift water flow. Utilizing the buoyancy difference, healthy fish eggs float to the surface and enter the collection tank 6, while feces and unfertilized eggs slide down the inclined surface of the separation plate 4 and accumulate at the bottom of the spawning tank, thus achieving automatic separation of healthy fish eggs from feces and unfertilized eggs.

[0048] Start the second motor 51 and the third motor 62. The second motor 51 drives the rotating scraper 54 to rotate slowly through the reducer 52 and the second belt drive device 53. The rotating scraper 54 separates the healthy fish eggs above the inclined plate 4 and sends them into the collection tank 6. The third motor 62 drives the push screw 61 to rotate synchronously and sends the healthy fish eggs in the collection tank 6 out of the outlet.

[0049] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for collecting mandarin fish eggs, characterized in that: It includes a spawning tank (1) set horizontally on the ground, with an inlet (11) on one side of the spawning tank (1); two flotation devices (2) are symmetrically arranged inside the spawning tank (1), and an adjustable flow guide device (3) is fixed below each flotation device (2). A separation ramp (4) is horizontally arranged in the middle of the spawning box (1). A collection rack (5) is arranged above the separation ramp (4). A collection trough (6) is fixed on one side of the collection rack (5). An outlet is opened at the lower end of the collection trough (6).

2. The mandarin fish egg collection device according to claim 1, characterized in that: The flotation device (2) includes a first motor (21) vertically fixed above the spawning tank (1), a flotation tube (23) fixed inside the spawning tank (1) on one side of the first motor (21), a first belt drive device (22) between the flotation tube (23) and the first motor (21); a rotating shaft (25) is coaxially arranged inside the flotation tube (23), the upper end of the rotating shaft (25) is fixed to the output end of the first belt drive device (22), and a propeller (26) is fixed to the lower end of the rotating shaft (25); a gas-liquid common pipe (24) is arranged on the outer circumferential side wall of the flotation tube (23); an aeration disc (7) is arranged at the lower end of the flotation tube (23), and the aeration disc (7) is fixedly connected to the adjustable guide device (3).

3. The mandarin fish egg collection device according to claim 2, characterized in that: Artificial aquatic plants (8) are evenly arranged along the circumference on the upper surface of the aeration disc (7), and aeration ports (71) are evenly opened around each of the artificial aquatic plants (8) on the aeration disc (7).

4. The mandarin fish egg collection device according to claim 3, characterized in that: The adjustable flow guiding device (3) includes a flow guiding frame (31) fixed to the aeration disc (7), and a worm gear ring (32) rotatably connected to the bottom of the flow guiding frame (31); the flow guiding frame (31) has a circumferential array of flow guiding blades (33), and the lower end of the flow guiding blades (33) extends into the worm gear ring (32); the upper surface of the flow guiding frame (31) is evenly provided with sliding grooves (34) along the circumference, and each sliding groove (34) is slidably provided with a sliding rod (35); each sliding rod (35) is provided with a connecting plate (310) between it and the corresponding flow guiding blade (33), and the two ends of the connecting plate (310) are respectively connected to the sliding rod (35) and the flow guiding blade (33); a fixing rod (36) is provided between adjacent sliding grooves (34) on the lower surface of the flow guiding frame (31); each fixing rod (36) is rotatably connected to the corresponding flow guiding blade (33). Each of the guide vanes (33) is fixedly provided with a slide rail (37) below it. One end of the slide rail (37) is fixedly connected to the worm gear ring (32), and the other end of the slide rail (37) is slidably connected to the adjacent slide rail (37). A worm (38) is provided on the outside of the worm gear ring (32) and meshes with it. The worm (38) is rotatably connected to the spawning box (1), and a handwheel (39) is provided at one end of the worm (38).

5. The mandarin fish egg collection device according to claim 4, characterized in that: A limit block is provided at the connection between the flow guide (31) and the worm gear ring (32).

6. The mandarin fish egg collection device according to claim 1, characterized in that: The angle between the separation inclined plate (4) and the lower surface of the spawning box (1) is set to 60°.

7. The mandarin fish egg collection device according to claim 6, characterized in that: The collection rack (5) includes a second motor (51) fixed on one side above the spawning box (1), a reducer (52) is provided on one side of the second motor (51), and the output shaft of the second motor (51) is connected to the reducer (52); a rotating scraper (54) is rotatably provided on the side of the upper end face of the spawning box (1) away from the flotation device (2), and a second belt drive device (53) is provided between the rotating scraper (54) and the reducer (52).

8. The mandarin fish egg collection device according to claim 7, characterized in that: A collection trough (6) fixed to the spawning box (1) is provided on one side of the rotating scraper (54); a push screw (61) is horizontally arranged inside the collection trough (6), one end of the push screw (61) is rotatably connected to the collection trough (6), and a third motor (62) is provided at the other end of the push screw (61); a water outlet is provided below the end of the collection trough (6) away from the third motor (62).

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