An aquaculture seedling rearing pond fry collection device

Abstract

The present invention provides a fry collection device for an aquaculture fry rearing pond that does not damage the fry, comprising a frame, a first tempered glass, a first hose, a lifting mechanism, and a blocking mechanism. The front and rear sides of the frame are both connected with the first tempered glass, the upper and lower parts on the left side of the frame are connected with the first hose, a lifting mechanism for fishing out the fry from inside the frame is provided on the frame, and a blocking mechanism for closing the fry fishing frame is provided on the lifting mechanism. First, the fry in the frame is fished up by the first storage frame, and then the drainage square through hole at the bottom of the first storage frame is sealed by a sliding baffle, so that there is a shallow layer of water left in the first storage frame, enabling the fry to be in a state of not lacking water during collection, thus the fry is not easily damaged and the survival rate of the fry is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of seedling cultivation, and particularly to a fry collection device for an aquaculture seedling pond. Background Art

[0002] With the continuous improvement of people's living standards, the demand for products such as fish, meat, and eggs is also increasing. Therefore, the aquaculture industry is developing better and better, and the breeding technology is constantly innovating. Cultivating fry in an aquaculture seedling pond is an important link and key technology in aquaculture. When the fry reach the market standard, they need to be caught in time and then put into the adult fish pond for feeding.

[0003] A patent with the patent publication number CN218999254U discloses a fry collection device for an aquaculture seedling pond, which includes a collection box and a driving component. A seedling pond discharge pipe is provided on the collection box, and the seedling pond discharge pipe is located above the collection box. A lifting filter plate is provided inside the collection box, and the lifting filter plate is in contact with the inner walls on both sides of the collection box and is not fixed.

[0004] The above-mentioned fry collection device for an aquaculture seedling pond drives the lifting filter plate to rise by controlling the driving motor, and the filter plate takes out the fry. However, this device needs to first drain the water inside the collection box, and then lift the filter plate to lift the fry. At this time, the fry are in a water-deficient state, which is likely to cause damage to the fry and affect the survival rate of the fry. Therefore, it is necessary to develop a fry collection device for an aquaculture seedling pond that does not damage the fry. Summary of the Invention

[0005] In order to overcome the defect that it is necessary to first drain the inside of the collection box and then lift the filter plate to lift the fry. At this time, the fry are in a water-deficient state, which is likely to cause damage to the fry and affect the survival rate of the fry, the present invention provides a fry collection device for an aquaculture seedling pond that does not damage the fry.

[0006] A fry collection device for an aquaculture seedling pond includes a frame, a first tempered glass, a first hose, a lifting mechanism, and a blocking mechanism. The first tempered glass is connected to both the front and rear sides of the frame. A first hose is connected between the upper and lower parts on the left side of the frame. A lifting mechanism for fishing out the fry from the inside is provided on the frame, and a blocking mechanism is provided on the lifting mechanism.

[0007] In one embodiment, the lifting mechanism includes a fixed frame, a biaxial motor, wire reels, rollers, wire ropes, a first storage frame, a second toughened glass, and a filter screen. Fixed frames are connected to the lower parts of the left and right sides of the frame. Biaxial motors are installed in the fixed frames. The output shafts on the front and rear sides of the biaxial motors are connected to wire reels through couplings. Rollers are rotatably connected symmetrically in the front and rear on the left and right sides of the upper part of the frame. A first storage frame for collecting seedlings from inside is slidably connected between the front, rear, left, and right inner walls of the frame. The bottom of the first storage frame is arranged in a downward slope shape from right to left for facilitating the outflow of seedlings along the water flow direction. A discharge hole for discharging seedlings is opened in the left part of the first storage frame. Rectangular through holes for draining water are opened on the front and rear sides of the bottom of the first storage frame. Wire ropes are symmetrically connected in the front and rear on the left and right sides of the upper part of the first storage frame. The wire ropes are wound around the adjacent rollers, and the other ends of the wire ropes are wound around the adjacent wire reels. Second toughened glasses are connected to the front and rear sides of the first storage frame. Filter screens are connected to the rectangular through holes on the bottom wall of the first storage frame.

[0008] In one embodiment, the blocking mechanism includes a floating plate, sliding rods, a first fixed guide rail, a sliding baffle, a fixed block, a first slider, a first rotating rod, and a first connecting rod. Sliding rods are symmetrically slidably connected in the front and rear on the left and right sides of the bottom of the first storage frame. A floating plate is connected between the lower parts of the sliding rods. First fixed guide rails are connected to the left and right sides of the bottom of the first storage frame. A sliding baffle for controlling the opening and closing of the rectangular through holes at the bottom of the first storage frame is slidably connected between the first fixed guide rails. Fixed blocks are connected to the left and right sides of the middle part on the upper side of the floating plate. A first slider is slidably connected between the fixed blocks. A first rotating rod is rotatably connected between the upper part of the first slider and the bottom of the first storage frame. A first connecting rod is rotatably connected between the lower part of the first rotating rod and the middle part of the front side of the sliding baffle.

[0009] In one embodiment, a placement mechanism for containing the fished seedlings is further included. The placement mechanism includes a diversion frame and a second storage frame. A diversion frame is connected to the upper part of the left side of the frame. A second storage frame for containing seedlings is slidably connected in the diversion frame.

[0010] In one embodiment, a diversion hole for draining water is opened in the upper part of the front wall of the second storage frame. The diversion frame is connected to the frame through a first hose.

[0011] In one embodiment, it further includes an opening and closing mechanism for controlling the opening and closing of the discharge hole on the left side of the first storage box. The opening and closing mechanism includes a second rotating rod, a torsion spring, a second connecting rod, and a second slider. The upper left side of the first storage box is rotatably connected to the second rotating rod. A torsion spring is connected between the rear part of the second rotating rod and the first storage box. The torsion spring is wound around the second rotating rod. The lower inner part of the second rotating rod is slidably connected with the second slider. The lower left side of the first storage box is rotatably connected to the second connecting rod. The upper part of the second connecting rod is also rotatably connected to the second slider. When the second connecting rod moves downward with the first storage box, it contacts the left inner wall of the frame.

[0012] In one embodiment, it further includes a pushing mechanism for pushing out the seedlings remaining in the first storage box. The pushing mechanism includes a sliding frame, a sponge block, and a magnet. The sliding frame is slidably connected between the front and rear inner walls of the first storage box. A sponge block for cleaning the seedlings is slidably connected inside the sliding frame. A magnet is installed on the upper part of the right inner wall of the first storage box. In the normal state, the magnet attracts the sliding frame.

[0013] In one embodiment, it further includes an oxygenation mechanism for supplying oxygen to the diversion box for containing seedlings. The oxygenation mechanism includes an air pump, a second hose, a connecting pipe, a second fixed guide rail, and a sliding plate. The air pump is installed in the middle of the left side of the frame. The rear part of the air pump is connected with the second hose. The other end of the second hose is connected with the connecting pipe. The second fixed guide rails are connected to the rear parts of the left and right inner walls of the second storage box respectively. A sliding plate is slidably connected between the second fixed guide rails. The upper part of the sliding plate is connected with a third hose. The third hose passes through the top wall of the second storage box and is threadedly connected with the connecting pipe.

[0014] Compared with the prior art, the present invention has the following advantages: 1. The present invention first picks up the seedlings in the frame through the first storage box, and then seals the drainage square through hole at the bottom of the first storage box with the sliding baffle, leaving a shallow layer of water in the first storage box, so that the seedlings can be in a state of not lacking water when being collected. Therefore, the seedlings are not easily damaged and the survival rate of the seedlings is improved.

[0015] 2. The present invention collects the seedlings through the second storage box, and the seedlings can also not be separated from the water after collection, so that the seedlings are not damaged and the survival rate of the seedlings is improved.

[0016] 3. The present invention controls the discharge hole on the left side of the first storage box through the second rotating rod, so that the seedlings in the first storage box are in an appropriate amount of water, avoiding premature exhaustion of the water in the first storage box and improving the survival rate of the seedlings.

[0017] 4. The present invention quickly and comprehensively scrapes the remaining seedlings into the second storage box through the sponge block, avoiding water shortage of the seedlings and improving the survival rate of the seedlings.

[0018] 5. The present invention supplies oxygen to the seedlings in the second storage box through an air pump, avoiding damage to the high-density seedlings due to oxygen deficiency when the water volume is small, and improving the survival rate of the seedlings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the first three-dimensional structure schematic diagram of the present invention.

[0020] Figure 2 It is the second three-dimensional structure schematic diagram of the present invention.

[0021] Figure 3 It is the third three-dimensional structure schematic diagram of the present invention.

[0022] Figure 4 It is the first partial three-dimensional structure schematic diagram of the lifting mechanism of the present invention.

[0023] Figure 5 It is the second partial three-dimensional structure schematic diagram of the lifting mechanism of the present invention.

[0024] Figure 6 It is the first partial three-dimensional structure schematic diagram of the blocking mechanism of the present invention.

[0025] Figure 7 It is the second partial three-dimensional structure schematic diagram of the blocking mechanism of the present invention.

[0026] Figure 8 It is the third partial three-dimensional structure schematic diagram of the blocking mechanism of the present invention.

[0027] Figure 9 It is the first partial three-dimensional structure schematic diagram of the placing mechanism of the present invention.

[0028] Figure 10 It is the second partial three-dimensional structure schematic diagram of the placing mechanism of the present invention.

[0029] Figure 11 It is the first partial three-dimensional structure schematic diagram of the opening and closing mechanism of the present invention.

[0030] Figure 12 It is the second partial three-dimensional structure schematic diagram of the opening and closing mechanism of the present invention.

[0031] Figure 13 It is the first partial three-dimensional structure schematic diagram of the pushing mechanism of the present invention.

[0032] Figure 14 It is the second partial three-dimensional structure schematic diagram of the pushing mechanism of the present invention.

[0033] Figure 15 It is the third partial three-dimensional structure schematic diagram of the pushing mechanism of the present invention.

[0034] Figure 16 This is the first partial three-dimensional structure schematic diagram of the oxygenation mechanism of the present invention.

[0035] Figure 17 This is the second partial three-dimensional structure schematic diagram of the oxygenation mechanism of the present invention.

[0036] The labels in the figure are: 1-frame, 2-first tempered glass, 3-first hose, 4-lifting mechanism, 41-fixed frame, 42-biaxial motor, 43-wire reel, 44-roller, 45-pull wire, 46-first storage box, 47-second tempered glass, 48-filter screen, 5-blocking mechanism, 51-floating plate, 52-slide bar, 53-first fixed guide rail, 54-sliding baffle, 55-fixed block, 56-first slider, 57-first rotating rod, 58-first connecting rod, 6-placement mechanism, 61-guiding frame, 62-second storage box, 63-guiding hole, 7-opening and closing mechanism, 71-second rotating rod, 72-torsion spring, 73-second connecting rod, 74-second slider, 8-pushing mechanism, 81-slide carriage, 82-sponge block, 83-magnet, 9-oxygenation mechanism, 91-air pump, 92-second hose, 93-connecting pipe, 94-second fixed guide rail, 95-slide plate, 96-third hose. Detailed implementation manners

[0037] First of all, it should be pointed out that in different described embodiments, the same components are provided with the same reference numerals or the same component names. Among them, the disclosed content included in the entire specification can be meaningfully applied to the same components with the same reference numerals or the same component names. The positional descriptions selected in the specification, such as up, down, lateral, etc., also refer to the directly described and shown drawings and are meaningfully applied to the new positions when the positions change. Embodiment 1

[0038] An aquaculture seedling collection device for a seedling rearing pond, as Figure 1 , Figure 2 and Figure 3 shown, includes a frame 1, a first tempered glass 2, a first hose 3, a lifting mechanism 4 and a blocking mechanism 5. The number of the first tempered glasses 2 is two, and the first tempered glasses 2 are respectively connected to the front and rear sides of the frame 1. The first hose 3 is connected between the upper and lower parts on the left side of the frame 1. A lifting mechanism 4 is provided on the frame 1. The lifting mechanism 4 can be used to fish out the seedlings from the frame 1, and a blocking mechanism 5 is provided on the lifting mechanism 4.

[0039] As Figure 1 , Figure 2 , Figure 4 and Figure 5As shown in the figure, the lifting mechanism 4 includes a fixed frame 41, a biaxial motor 42, a wire reel 43, a roller 44, a wire 45, a first storage frame 46, a second tempered glass 47 and a filter screen 48. There are two fixed frames 41, which are respectively fixedly connected to the lower parts of the left and right sides of the frame 1. There are two biaxial motors 42, which are respectively installed in the fixed frames 41. There are four wire reels 43, and every two wire reels 43 are respectively connected to the output shafts on the front and rear sides of the biaxial motor 42 through couplings. There are four rollers 44, and the left and right sides of the upper part of the frame 1 are both rotatably connected to the rollers 44 in a front-back symmetric manner, which are used to collect the seedlings. The first storage frame 46 is slidably connected between the front, rear, left and right inner walls of the frame 1. The bottom of the first storage frame 46 is arranged in a downhill trend from right to left to facilitate the seedlings to flow out along the water flow direction. The left part of the first storage frame 46 is provided with a discharge hole for the seedlings to emerge. Rectangular through holes for draining water are opened on the front and rear sides of the bottom of the first storage frame 46. There are four wires 45, which are respectively connected to the front and rear sides of the left and right parts of the first storage frame 46. The wires 45 are all wound around the adjacent rollers 44, and the other ends of the wires 45 are all wound around the adjacent wire reels 43. There are two second tempered glasses 47, which are respectively connected to the front and rear sides of the first storage frame 46. Filter screens 48 are connected to the rectangular through holes on the bottom wall of the first storage frame 46.

[0040] As Figure 2 , Figure 6 , Figure 7 and Figure 8 shown in the figure, the blocking mechanism 5 includes a floating plate 51, a sliding rod 52, a first fixed guide rail 53, a sliding baffle 54, a fixed block 55, a first slider 56, a first rotating rod 57 and a first connecting rod 58. The left and right sides of the bottom of the first storage frame 46 are both slidably connected to the sliding rods 52 in a front-back symmetric manner. The floating plate 51 is connected between the lower parts of the sliding rods 52. There are two first fixed guide rails 53, which are respectively connected to the left and right sides of the bottom of the first storage frame 46. The sliding baffle 54 is slidably connected between the first fixed guide rails 53, and the sliding baffle 54 is used to control the opening and closing of the rectangular through holes at the bottom of the first storage frame 46. There are two fixed blocks 55, which are respectively connected to the left and right sides of the middle part of the upper side of the floating plate 51. The first slider 56 is slidably connected between the fixed blocks 55. The first rotating rod 57 is rotatably connected between the upper part of the first slider 56 and the bottom of the first storage frame 46. The first connecting rod 58 is rotatably connected between the lower part of the first rotating rod 57 and the middle part of the front side of the sliding baffle 54.

[0041] Initially, the first storage frame 46 and the floating plate 51 sink to the bottom of the frame 1. When it is necessary to collect seedlings, the staff first starts the double-axis motor 42 and controls the output shaft of the double-axis motor 42 to rotate outward, thereby driving the winding wheel 43 to rotate outward, and the rotating winding wheel 43 reels the pull line 45. When reeling, the pull line 45 drives the roller 44 to rotate, and then the first storage frame 46 is pulled up through the pull line 45, and then the first storage frame 46 drives the floating plate 51, the sliding baffle 54, the fixed block 55, the first slider 56, the first rotating rod 57, the first connecting rod 58 and the seedlings to rise from the water. Under the action of buoyancy, the floating plate The upper side of the first storage frame 46 is fitted with the bottom of the first storage frame 46. When the discharge hole on the left part of the first storage frame 46 is located above the frame 1, the staff puts the holding tool on the lower left of the discharge hole, and the floating plate 51 is just separated from the water surface. Then, under the action of the gravity of the floating plate 51, the floating plate 51 moves downward relative to the first storage frame 46, thereby driving the fixed block 55 and the first sliding block 56 to move downward, and the first sliding block 56 slides backward, thereby driving the first rotating rod 57 and the first connecting rod 58 to rotate inward, and then the first connecting rod 58 pulls the sliding baffle 54 backward, and the sliding baffle 54 seals the rectangular through hole in the bottom wall of the first storage frame 46, so that the first A shallow layer of water can be retained in the storage frame 46, so that the seedlings flow into the containing tool from the discharge hole along the direction of the water flow. When all the seedlings flow into the containing tool, the output shaft of the dual-axis motor 42 is controlled to rotate inward, thereby driving the winding wheel 43 to rotate inward, and the rotating winding wheel 43 releases the pulling line 45. Subsequently, under the gravity of the first storage frame 46, the first storage frame 46 drives the floating plate 51 to move downward and sink into the water of the frame 1, and under the action of buoyancy, the floating plate 51 fits with the bottom of the first storage frame 46, thereby driving the fixing block 55 and the first sliding block 56 to move upward relatively, thereby The rod 58 drives the sliding baffle 54 to slide forward, and the sliding baffle 54 no longer seals the rectangular through hole on the bottom wall of the first storage frame 46, so that the water in the frame 1 passes through the filter net 48 on the rectangular through hole and enters the first storage frame 46. When the floating plate 51 contacts the bottom wall of the first storage frame 46, the dual-axis motor 42 is turned off. In summary, the seedlings in the frame 1 are first scooped up through the first storage frame 46, and then the drainage rectangular through hole at the bottom of the first storage frame 46 is sealed by the sliding baffle 54, so that a shallow layer of water remains in the first storage frame 46, so that the seedlings can be kept in a state of not lacking water when being collected, so the seedlings are not easily damaged, thereby improving the survival rate of the seedlings. Example 2

[0042] On the basis of Example 1, Figure 1 , Figure 2 , Figure 9 and Figure 10As shown, it further includes a placement mechanism 6 which can be used to hold the salvaged fry. The placement mechanism 6 includes a diversion frame 61 and a second storage frame 62. The diversion frame 61 is fixedly connected to the upper left part of the frame 1 and is used to hold the fry. The second storage frame 62 for holding the fry is slidably connected within the diversion frame 61. A diversion hole 63 for draining water is opened in the upper part of the front wall of the second storage frame 62. The diversion frame 61 is communicated with the frame 1 through a first hose 3.

[0043] When collecting fry, first place the cleaned second storage frame 62 into the diversion frame 61. When the fry flows into the second storage frame 62 from the discharge hole along the water flow direction, if there is too much water in the second storage frame 62, the water will flow from the diversion hole 63 into the diversion frame 61 and then flow into the frame 1 through the first hose 3. When all the fry in the first storage frame 46 has flowed into the second storage frame 62, the staff takes out the second storage frame 62 and puts the fry in the second storage frame 62 into the adult fish pond for breeding. In summary, the fry is collected through the second storage frame 62, and the fry can also not be separated from the water after collection, so that the fry is not damaged and the survival rate of the fry is improved.

[0044] As Figure 1 、 Figure 2 、 Figure 11 and Figure 12 As shown, it further includes an opening and closing mechanism 7 which can be used to control the opening and closing of the discharge hole on the left part of the first storage frame 46. The opening and closing mechanism 7 includes a second rotating rod 71, a torsion spring 72, a second connecting rod 73 and a second slider 74. The second rotating rod 71 is rotatably connected to the upper left part of the first storage frame 46. The torsion spring 72 is connected between the rear part of the second rotating rod 71 and the first storage frame 46 and is wound around the second rotating rod 71. The second slider 74 is slidably connected to the lower inner part of the second rotating rod 71. The second connecting rod 73 is rotatably connected to the lower left part of the first storage frame 46. The upper part of the second connecting rod 73 is also rotatably connected to the second slider 74. When the second connecting rod 73 moves downward along with the first storage frame 46, it contacts the left inner wall of the frame 1.

[0045] When the first storage box 46 sinks to the bottom of the frame 1, the torsion spring 72 is in a twisted state. The second rotating rod 71 seals the discharge hole on the left side of the first storage box 46. When the first storage box 46 moves upward, it drives the second rotating rod 71 and the second connecting rod 73 to move upward. When the discharge hole on the left side of the first storage box 46 is above the frame 1, under the action of the torsion spring 72, the second rotating rod 71 rotates leftward to open the discharge hole, and then drives the second connecting rod 73 to rotate leftward through the second slider 74, so that the seedlings can flow into the second storage box 62 along the water flow. When the second connecting rod 73 moves downward with the first storage box 46 and contacts the left inner wall of the frame 1, the left inner wall of the frame 1 resists the second connecting rod 73 to make it rotate rightward, and then drives the second rotating rod 71 to rotate rightward through the second slider 74. The second rotating rod 71 seals the discharge hole on the left side of the first storage box 46 again, and the torsion spring 72 returns to the twisted state. To sum up, the discharge hole on the left side of the first storage box 46 is controlled by the second rotating rod 71, so that the seedlings in the first storage box 46 are in an appropriate amount of water, avoiding premature exhaustion of the water in the first storage box 46 and improving the survival rate of the seedlings.

[0046] As Figure 1 , Figure 2 , Figure 13 , Figure 14 and Figure 15 shown, it further includes a pushing mechanism 8. The pushing mechanism 8 can be used to push out the seedlings remaining in the first storage box 46. The pushing mechanism 8 includes a sliding frame 81, a sponge block 82 and a magnet 83. The sliding frame 81 is slidably connected between the front and rear inner walls of the first storage box 46. The sponge block 82 for cleaning the seedlings is slidably connected in the sliding frame 81. The magnet 83 is installed on the upper part of the right inner wall of the first storage box 46. In the normal state, the magnet 83 attracts the sliding frame 81.

[0047] When there are still some seedlings remaining in the first storage box 46, the staff manually moves the sliding frame 81 to the left, driving the sponge block 82 to move to the left. The sponge block 82 scrapes the seedlings to the discharge hole on the left side of the first storage box 46 for discharge. When the sliding frame 81 moves to the left side of the first storage box 46, since the bottom wall of the first storage box 46 is set with the left side lower and the right side higher, the sponge block 82 will slide out of the sliding frame 81 a little downward. After all the seedlings are scraped, the sliding frame 81 is moved to the right until it contacts the magnet 83. Under the action of the magnetic force, the magnet 83 attracts the sliding frame 81. To sum up, the remaining seedlings are quickly and comprehensively scraped into the second storage box 62 by the sponge block 82, avoiding water shortage of the seedlings and improving the survival rate of the seedlings.

[0048] As Figure 1 , Figure 2 , Figure 16 and Figure 17As shown in the figure, it further includes an oxygenation mechanism 9 which can be used to supply oxygen into the diversion frame 61 for holding fry. The oxygenation mechanism 9 includes an air pump 91, a second hose 92, a connecting pipe 93, a second fixed guide rail 94 and a sliding plate 95. The air pump 91 is installed in the middle of the left side of the frame 1. The second hose 92 is connected to the rear of the air pump 91. The other end of the second hose 92 is connected to a connecting pipe 93. The number of the second fixed guide rails 94 is two, and the second fixed guide rails 94 are respectively fixedly connected to the rear parts of the left and right inner walls of the second storage box 62. The sliding plate 95 is slidably connected between the second fixed guide rails 94. A third hose 96 is connected to the upper part of the sliding plate 95. The third hose 96 passes through the top wall of the second storage box 62 and is threadedly connected to the connecting pipe 93.

[0049] After the cleaned second storage box 62 is placed into the diversion frame 61, first pull out the third hose 96 from the second storage box 62 and install it together with the connecting pipe 93. After the installation is completed, under the action of its own gravity, the sliding plate 95 slides to the bottom of the second storage box 62. Then turn on the air pump 91, and the air pump 91 supplies oxygen to the fry in the second storage box 62 through the second hose 92, the third hose 96 and the sliding plate 95. When the staff wants to take out the second storage box 62, first turn off the air pump 91, and then twist the connecting pipe 93 to separate the connecting pipe 93 from the third hose 96. To sum up, the air pump 91 supplies oxygen to the fry in the second storage box 62, avoiding damage to the high-density fry due to lack of oxygen when the water volume is small and improving the survival rate of the fry.

[0050] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An aquaculture seedling collection device for a nursery pond, comprising a frame (1), a first tempered glass (2) and a first hose (3). The first tempered glass (2) is connected to both the front and rear sides of the frame (1), and the first hose (3) is connected between the upper and lower parts on the left side of the frame (1). Characterized in that, a lifting mechanism (4) and a blocking mechanism (5). A lifting mechanism (4) for fishing out the seedlings from the inside is provided on the frame (1), and a blocking mechanism (5) is provided on the lifting mechanism (4); The lifting mechanism (4) includes a fixed frame (41), a bi-axial motor (42), a wire reel (43), a roller (44), a wire (45), a first storage frame (46), a second tempered glass (47) and a filter net (48). A first storage frame (46) for collecting seedlings from the inside is slidably connected between the front, rear, left and right inner walls of the frame (1). The bottom of the first storage frame (46) is arranged in a downhill shape from right to left for facilitating the seedlings to flow out along the water flow direction. A discharge hole for the seedlings to emerge is opened in the left part of the first storage frame (46). Rectangular through holes for draining water are opened on both the front and rear sides of the bottom of the first storage frame (46), and filter nets (48) are connected to the rectangular through holes; The blocking mechanism (5) includes a floating plate (51), a sliding rod (52), a first fixed guide rail (53), a sliding baffle (54), a fixed block (55), a first slider (56), a first rotating rod (57) and a first connecting rod (58). Sliding rods (52) are symmetrically connected in the front and rear directions on both the left and right sides of the bottom of the first storage frame (46). A floating plate (51) is connected between the lower parts of the sliding rods (52). First fixed guide rails (53) are connected to both the left and right sides of the bottom of the first storage frame (46). A sliding baffle (54) for controlling the opening and closing of the rectangular through holes at the bottom of the first storage frame (46) is slidably connected between the first fixed guide rails (53). Fixed blocks (55) are connected to both the left and right sides of the middle part on the upper side of the floating plate (51). A first slider (56) is slidably connected between the fixed blocks (55). A first rotating rod (57) is rotatably connected between the upper part of the first slider (56) and the bottom of the first storage frame (46). A first connecting rod (58) is rotatably connected between the lower part of the first rotating rod (57) and the middle part on the front side of the sliding baffle (54); It further includes an opening and closing mechanism (7) for controlling the opening and closing of the discharge hole on the left side of the first storage box (46). The opening and closing mechanism (7) includes a second rotating rod (71), a torsion spring (72), a second connecting rod (73), and a second slider (74). The upper left side of the first storage box (46) is rotatably connected to the second rotating rod (71). A torsion spring (72) is connected between the rear part of the second rotating rod (71) and the first storage box (46). The torsion spring (72) is wound around the second rotating rod (71). The lower inner part of the second rotating rod (71) is slidably connected to the second slider (74). The lower left side of the first storage box (46) is rotatably connected to the second connecting rod (73). The upper part of the second connecting rod (73) is also rotatably connected to the second slider (74). When the second connecting rod (73) moves downward with the first storage box (46), it contacts the left inner wall of the frame (1).

2. The fry collection device for an aquaculture fry pond according to claim 1, characterized in that, Fixed frames (41) are connected to the lower parts of the left and right sides of the frame (1). Biaxial motors (42) are installed in the fixed frames (41). The output shafts on the front and rear sides of the biaxial motors (42) are connected to wire reels (43) through couplings. The left and right sides of the upper part of the frame (1) are symmetrically rotatably connected to rollers (44) in the front and rear. The left and right sides of the upper part of the first storage box (46) are symmetrically connected to stay wires (45) in the front and rear. The stay wires (45) are wound around the adjacent rollers (44), and the other ends of the stay wires (45) are wound around the adjacent wire reels (43). Second tempered glasses (47) are connected to the front and rear sides of the first storage box (46).

3. The fry collection device for an aquaculture fry pond according to claim 2, characterized in that, It further includes a placement mechanism (6) for containing the fished fry. The placement mechanism (6) includes a diversion frame (61) and a second storage box (62). The diversion frame (61) is connected to the upper left side of the frame (1). A second storage box (62) for containing fry is slidably connected in the diversion frame (61).

4. The fry collection device for an aquaculture fry pond according to claim 3, characterized in that, A diversion hole (63) for draining water is opened in the upper part of the front wall of the second storage box (62). The diversion frame (61) is communicated with the frame (1) through a first hose (3).

5. The fry collection device for an aquaculture fry pond according to claim 4, characterized in that, It further includes a pushing mechanism (8) for pushing the fry remaining in the first storage box (46). The pushing mechanism (8) includes a sliding frame (81), a sponge block (82), and a magnet (83). The sliding frame (81) is slidably connected between the front and rear inner walls of the first storage box (46). A sponge block (82) for cleaning the fry is slidably connected in the sliding frame (81). A magnet (83) is installed on the upper part of the right inner wall of the first storage box (46). In the normal state, the magnet (83) attracts the sliding frame (81).

6. The fry collection device for an aquaculture fry pond according to claim 5, characterized in that, It further includes an oxygenation mechanism (9) for supplying oxygen into the diversion frame (61) for containing fry. The oxygenation mechanism (9) includes an air pump (91), a second hose (92), a connecting pipe (93), a second fixed guide rail (94) and a sliding plate (95). The air pump (91) is installed in the middle of the left side of the frame (1). The rear of the air pump (91) is connected to the second hose (92). The other end of the second hose (92) is connected to the connecting pipe (93). The rear parts of the left and right inner walls of the second storage frame (62) are both connected to the second fixed guide rail (94). A sliding plate (95) is slidably connected between the second fixed guide rails (94). The upper part of the sliding plate (95) is connected to a third hose (96). The third hose (96) passes through the top wall of the second storage frame (62) and is threadedly connected to the connecting pipe (93).

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