A flexible adjustable fish fry counter

Abstract

The present application relates to the technical field of fishery breeding equipment, and particularly relates to a flexible adjustable fry counter. The fry counter comprises a base, an inlet channel, a counting channel and an outlet channel. One end of the base is fixedly connected with two rotating grooves. The side edges of the outlet channel are fixedly provided with rotating shafts. The rotating shafts are rotatably connected with the corresponding rotating grooves. The outlet channel is inwardly extended at one end to be provided with a first inner edge. The present application enables the channel to stably expand and contract, reduces the interference on the fry, thereby better protecting the fry and reducing the counting error of the counter body on the fry. The present application enables the device to be better fixed through the structural design of the limiting structure, is simple to operate, enables the channel to be stopped at the desired position, and makes the device adjustment more flexible. The present application can prevent the speed from being too fast or too slow, facilitates the fry counting, and further improves the accuracy of the fry counting.

Description

Technical Field

[0001] This invention relates to the field of aquaculture equipment technology, and in particular to a flexibly adjustable fish fry counter. Background Technology

[0002] A fish fry counter is a technological device used to automatically detect and record the number of fish fry. This technology is relevant to the modernization and intelligent development of aquaculture, aiming to improve production efficiency, reduce costs, and enhance management efficiency. A fish fry counter utilizes advanced sensors, image processing, and data analysis technologies to achieve real-time monitoring and statistical analysis of the number of fish fry in a water area.

[0003] Chinese Patent Application No. CN202110701760.5 discloses a high-throughput online fish fry counting device and method. The device includes a fish fry observation channel, a camera, a support frame, and a fish fry buffer track. An outlet is located at the beginning of the fish fry buffer track. The fish fry observation channel is inclined and fixed in the middle of the support frame and connected to the fish fry buffer track via a curved track. The end of the fish fry observation channel is connected to a fish fry outlet section, which is located at the lower part of the support frame. The top of the fish fry buffer track is open, while the tops of the curved track, the fish fry observation channel, and the fish fry outlet section are all closed. This patent uses a smooth curved track and inclined channel for fish fry separation, which not only increases the fish fry throughput speed, increasing the fish fry throughput per unit time by several times, but also reduces scratches and damage to the fish fry. It enables real-time online continuous counting of large batches of fish fry, improving fish fry counting efficiency and effectively reducing the impact of false detections and missed detections on counting accuracy.

[0004] During the counting of fish fry, the speed at which the fish fry pass through the counter is one of the key factors affecting the accuracy of the counting. How to accurately control the speed at which the fish fry pass through the counter has become the direction of research. At the same time, the process of adjusting the counter device is cumbersome and inefficient, and the adjustment process will affect the flow of fish fry, thus indirectly affecting the accuracy of the counting. Summary of the Invention

[0005] To address the aforementioned deficiencies or improvement needs of existing technologies, this invention provides a flexibly adjustable fish fry counter. This invention allows the channel to extend and retract smoothly, reducing interference with the fish fry and thus better protecting them and minimizing counting errors by the counter itself. The invention's limiting structure design allows for better fixation of the device, simplifies operation, and enables the channel to stop at the desired position, making the device more flexible in its adjustment. This invention prevents the speed from being too fast or too slow, facilitating fish fry counting and improving the accuracy of fish fry counting.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A flexibly adjustable fish fry counter includes a base, a fish inlet channel, a counting channel, and a fish outlet channel; one end of the base is fixedly connected to two rotating slots, and each side end of the fish outlet channel is fixedly provided with a rotating shaft, the rotating shaft being rotatably connected to the corresponding rotating slot; one end of the fish outlet channel extends inwardly and is provided with a first inner edge;

[0008] One port of the counting channel extends outward and has a first outer edge, while the other port of the counting channel extends inward and has a second inner edge; the first outer edge is located inside the fish outlet channel and is slidably connected to the fish outlet channel; the top of the counting channel is connected to a conical channel, and a counter body is installed on the top of the conical channel;

[0009] One end of the fish inlet channel extends outward and is provided with a second outer edge, which is located inside the counting channel and slidably connected to the counting channel. The other end of the fish inlet channel is set upward. The side wall of the fish inlet channel is connected to the base through a limiting structure.

[0010] Furthermore, two first n-shaped slides are symmetrically and fixedly connected to the middle of the base, and a first sliding block is fixedly provided on the side of each counting channel. The first sliding block is located in the corresponding first n-shaped slide and is slidably connected to the first n-shaped slide. Two second n-shaped slides are symmetrically and fixedly connected to the end of the base away from the rotating groove. A connecting plate is fixedly connected to the side wall of each fish inlet channel. A second sliding block is fixedly provided on the connecting plate. The second sliding block is located in the corresponding second n-shaped slide and is slidably connected to the second n-shaped slide.

[0011] Furthermore, a pair of lugs are fixedly connected to the bottom of the counting channel, and a transmission gear is rotatably connected to the lugs; a first toothed plate is fixedly connected to the bottom of the fish outlet channel, and a second toothed plate is fixedly connected to the bottom of the fish inlet channel via a connecting frame; the first toothed plate is located above the transmission gear and meshes with the transmission gear, and the second toothed plate is located below the transmission gear and meshes with the transmission gear; a support frame is also fixed to the bottom of the counting channel, and the second toothed plate is located inside the support frame and abuts against the support frame.

[0012] Furthermore, the limiting structure includes a rotating shaft, on which a rope shaft is fixedly connected; a support plate is fixedly connected to one end of the base near the second n-shaped slide, one end of the rotating shaft is rotatably connected to the support plate via a bearing, and a crossbar is fixedly connected to the other end of the rotating shaft, with a rotating handle fixedly connected to one end of the crossbar;

[0013] The top of the second n-shaped slide is provided with a through hole, and each of the second sliding blocks is fixedly connected with a transmission steel rope. The transmission steel rope passes through the corresponding through hole and is fixedly wound around the rope shaft. The winding directions of the two transmission steel ropes are opposite.

[0014] Furthermore, the rotating shaft is a hollow structure, and a limiting shaft is movably inserted inside the rotating shaft. Two through slots are symmetrically opened on the side wall of the rotating shaft located between the support plate and the rope shaft. Fixing rods are symmetrically provided on the side wall of the limiting shaft. The fixing rods pass through the corresponding through slots and are jointly fixedly connected to the limiting ring.

[0015] Furthermore, the outer surface of the limiting ring is evenly provided with a plurality of second rotating grooves, and a retaining strip is rotatably connected in the second rotating groove via a bearing. A torsion spring is provided in the second rotating groove, and the torsion spring is fixedly connected to the second rotating groove and the retaining strip respectively. An abutment block is fixedly connected to one side of the second rotating groove. The outer end of the retaining strip has a curved surface structure.

[0016] The support plate has a slot on its side wall near the rope shaft, and a plurality of limiting protrusions are evenly and continuously provided on the inner side wall of the slot. The limiting protrusions are curved.

[0017] When the limiting ring is in the slot, the curved surface of the locking strip abuts against the curved surface of the limiting protrusion and the curved surfaces are in the same direction. When the rope shaft is rotated to raise the second sliding block, the curved surface of the locking strip slides on the curved surface of the limiting protrusion of the slot through the rotation of the torsion spring. When the rope shaft is released, the limiting ring rotates in the opposite direction to reset the torsion spring, and the locking strip abuts against the abutment block, so that the locking strip is locked between the adjacent limiting protrusions of the slot, thereby limiting and fixing.

[0018] Furthermore, a water tank is fixedly connected to the side of the fish inlet channel away from the second outer edge. The top of the water tank is open, and multiple water inlet holes are horizontally and evenly opened at the lower end of the side wall of the water tank. The water inlet holes are connected to the fish inlet channel.

[0019] Furthermore, the water tank has symmetrically arranged slots inside, and a throttling structure is inserted into each slot. The throttling structure includes a throttling plate, which is inserted into the slot, with one side of the throttling plate abutting against the inner wall of the water tank. The side of the throttling plate has multiple through holes, each corresponding to a water inlet hole. The throttling plate has a hollow interior, and a control plate is inserted through it. The control plate has multiple throttling holes, each corresponding to a through hole. Two symmetrically arranged sealing grooves are formed on the side wall of the water tank, and the control plate extends out of the water tank through the corresponding sealing groove.

[0020] Furthermore, sealing strips are provided at both ends of the throttling plate where it connects to the water tank.

[0021] Furthermore, a pulley is installed at the bottom of the base, and a handle is fixedly connected to the outer wall of the second n-shaped slide.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) The present invention uses a sliding connection between the fish inlet channel, the counting channel and the fish outlet channel to allow the channels to expand and contract without the risk of leakage. By cooperating with the first n-type slide and the second n-type slide, the fish inlet channel, the counting channel and the fish outlet channel can expand and contract proportionally. At the same time, through the meshing of the first tooth plate, the second tooth plate and the transmission gear, the fish inlet channel, the counting channel and the fish outlet channel can expand and contract smoothly, reducing interference to the fish fry, thereby better protecting the fish fry and reducing the counting error of the counter body for the fish fry.

[0024] (2) Through the design of the limiting structure, when it is necessary to lift and extend the channel, the limiting shaft is pushed to make the limiting ring enter the slot, and the curved surface of the locking bar abuts against the curved surface of the limiting protrusion and the curved surfaces are in the same direction; by shaking the rotating handle, the transmission steel rope is wound around the rope shaft, thereby lifting the second sliding block, and thus lifting and extending the channel; due to the action of the torsion spring, the curved surface of the locking bar will slide on the curved surface of the limiting protrusion of the slot, so that the slot does not affect the rope shaft winding; when the channel has reached the designated position, the rope shaft is released, and at this time, due to the gravity of the channel, the rope shaft will be pulled in the opposite direction. Rotation causes the limiting ring to rotate in the opposite direction, resetting the torsion spring. After the torsion spring resets, the locking strip rotates and abuts against the abutment block. The outer end of the locking strip is engaged between adjacent limiting protrusions in the slot. Since the slot is fixed, the gravity of the channel acts on the abutment block, locking strip, and slot, preventing it from falling down, thus achieving limiting and fixing. When it is necessary to lower the channel, simply pull the limiting shaft to move the limiting ring out of the slot, and then crank the rotating handle in the opposite direction. This invention, through the structural design of the limiting structure, enables the device to be better fixed, is simple to operate, allows the channel to stop at the desired position, and makes the device adjustment more flexible.

[0025] (3) Through the structural design of the water tank, the water inlet can be flexibly adjusted by the cooperation of the throttling plate and the control plate. The water flow can be adjusted by simply pulling the control plate. At the same time, the height of the channel can be adjusted so that the fish fry pass through the counting channel at a suitable speed, preventing the speed from being too fast or too slow, which facilitates the counting of fish fry and improves the accuracy of the counting. At the same time, the multi-hole design makes the water flow of the device more uniform, thereby forming a stable water flow and improving the stability of the speed.

[0026] (4) The present invention reduces the risk of water leakage while controlling the flow rate through the structural design of the control plate and the throttling plate, and achieves multiple sealing effects with the use of the sealing strip. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a flexibly adjustable fish fry counter according to the present invention;

[0028] Figure 2 This is a schematic diagram of the dispersed structure of a flexibly adjustable fish fry counter according to the present invention;

[0029] Figure 3 This is a schematic diagram of the base structure of a flexibly adjustable fish fry counter according to the present invention;

[0030] Figure 4 This is a schematic diagram of the limiting structure of a flexibly adjustable fish fry counter according to the present invention. Figure 1 ;

[0031] Figure 5 This is a schematic diagram of the limiting structure of a flexibly adjustable fish fry counter according to the present invention. Figure 2 ;

[0032] Figure 6 This is a schematic diagram of the counting channel structure of a flexibly adjustable fish fry counter according to the present invention;

[0033] Figure 7 This is a schematic diagram of the fish outlet channel structure of a flexibly adjustable fish fry counter according to the present invention;

[0034] Figure 8 This is a schematic diagram of the fish inlet channel structure of a flexibly adjustable fish fry counter according to the present invention;

[0035] Figure 9 This is a schematic diagram of the tank dispersion structure of a flexibly adjustable fish fry counter according to the present invention;

[0036] Figure 10 This is a schematic diagram of the water tank structure of a flexibly adjustable fish fry counter according to the present invention.

[0037] The attached figures are labeled as follows:

[0038] Base 100; Rotating groove 120; First n-shaped slide 130; Second n-shaped slide 140; Support plate 150; Slot 151; Pulley 160; Fish outlet channel 200; First toothed plate 220; Rotating shaft 230; First inner edge 240; Counting channel 300; First outer edge 320; Conical channel 330; Ear edge 340; Transmission gear 341; Support frame 350; First sliding block 360; Second inner edge 370; Fish inlet channel 400; Second outer edge 420; Connection Plate 430; Second sliding block 431; Connecting frame 440; Second toothed plate 450; Water tank 500; Water inlet 520; Connecting groove 530; Slot 540; Throttling plate 550; Through hole 551; Control plate 560; Throttling hole 561; Limiting structure 600; Rope shaft 610; Transmission steel rope 611; Rotating shaft 620; Through groove 621; Crossbar 622; Rotating handle 623; Limiting shaft 630; Limiting ring 631; Abutting block 632; Locking strip 633; ​​Counter body 700. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Example

[0041] like Figures 1-10 As shown, a flexibly adjustable fish fry counter includes a base 100, a fish inlet channel 400, a counting channel 300, and a fish outlet channel 200. Two rotating slots 120 are fixedly connected to one end of the base 100, and rotating shafts 230 are fixedly provided on the side ends of the fish outlet channel 200. The rotating shafts 230 are rotatably connected to the corresponding rotating slots 120. A first inner edge 240 extends inward from one end of the fish outlet channel 200.

[0042] One port of the counting channel 300 extends outward and is provided with a first outer edge 320, and the other port of the counting channel 300 extends inward and is provided with a second inner edge 370; the first outer edge 320 is located inside the fish outlet channel 200 and is slidably connected to the fish outlet channel 200; the top of the counting channel 300 is connected to a conical channel 330, and a counter body 700 is installed on the top of the conical channel 330;

[0043] One end of the fish inlet channel 400 extends outward and is provided with a second outer edge 420. The second outer edge 420 is located inside the counting channel 300 and is slidably connected to the counting channel 300. The other end of the fish inlet channel 400 is arranged facing upward. The side wall of the fish inlet channel 400 is connected to the base 100 through a limiting structure 600.

[0044] Fish fry are added from the upward-facing port of the fish inlet channel 400. The fish fry flow into the counting channel 300 and the fish outlet channel 200 in sequence. When passing through the counting channel 300, the fish fry are counted by the counter body 700. After the count is completed, the fish fry finally flow out from the fish outlet channel 200.

[0045] The structural design of the outer and inner edges allows the channels to be interlocked without falling apart.

[0046] It is worth noting that the counter body 700 is based on existing mature technology, such as the Bioscanner counter, which can count fish fry. The counter body 700 can be powered by an external power source, which will not be described in detail here.

[0047] Furthermore, two first n-shaped slide rails 130 are symmetrically fixedly connected to the middle of the base 100, and first sliding blocks 360 are fixedly provided on the sides of the counting channel 300. The first sliding blocks 360 are located in the corresponding first n-shaped slide rails 130 and are slidably connected to the first n-shaped slide rails 130. Two second n-shaped slide rails 140 are symmetrically fixedly connected to the end of the base 100 away from the rotating groove 120. Connecting plates 430 are fixedly connected to the side walls of the fish inlet channel 400. Second sliding blocks 431 are fixedly provided on the connecting plates 430. The second sliding blocks 431 are located in the corresponding second n-shaped slide rails 140 and are slidably connected to the second n-shaped slide rails 140.

[0048] Furthermore, a pair of ear-shaped supports 340 are fixedly connected to the bottom of the counting channel 300, and a transmission gear 341 is rotatably connected to the ear-shaped supports 340; a first toothed plate 220 is fixedly connected to the bottom of the fish outlet channel 200, and a second toothed plate 450 is fixedly connected to the bottom of the fish inlet channel 400 through a connecting bracket 440; the first toothed plate 220 is located above the transmission gear 341 and meshes with the transmission gear 341, and the second toothed plate 450 is located below the transmission gear 341 and meshes with the transmission gear 341; a support frame 350 is also fixedly connected to the bottom of the counting channel 300, and the second toothed plate 450 is located inside the support frame 350 and abuts against the support frame 350.

[0049] This invention utilizes a sliding connection between the fish inlet channel 400, the counting channel 300, and the fish outlet channel 200 to allow the channels to expand and contract without the risk of leakage. By cooperating with the first n-shaped slide rail 130 and the second n-shaped slide rail 140, the fish inlet channel 400, the counting channel 300, and the fish outlet channel 200 can expand and contract proportionally. Simultaneously, through the meshing of the first toothed plate 220, the second toothed plate 450, and the transmission gear 341, the fish inlet channel 400, the counting channel 300, and the fish outlet channel 200 can expand and contract smoothly, reducing interference with the fish fry and thus better protecting the fish fry and reducing the counting error of the counter body 700.

[0050] Furthermore, the limiting structure 600 includes a rotating shaft 620, on which a rope shaft 610 is fixedly connected; a support plate 150 is fixedly connected to one end of the base 100 near the second n-shaped slide 140; one end of the rotating shaft 620 is rotatably connected to the support plate 150 via a bearing; and a crossbar 622 is fixedly connected to the other end of the rotating shaft 620. A rotating handle 623 is fixedly connected to one end of the crossbar 622.

[0051] The top of the second n-shaped slide 140 is provided with a through hole, and each of the second sliding blocks 431 is fixedly connected with a transmission steel rope 611. The transmission steel rope 611 passes through the corresponding through hole and is fixedly wound around the rope shaft 610. The winding directions of the two transmission steel ropes 611 are opposite.

[0052] Furthermore, the rotating shaft 620 is a hollow structure, and a limiting shaft 630 is movably inserted inside the rotating shaft 620. Two through slots 621 are symmetrically opened on the side wall of the rotating shaft 620 located between the support plate 150 and the rope shaft 610. Fixing rods are symmetrically provided on the side wall of the limiting shaft 630. The fixing rods pass through the corresponding through slots 621 and are fixedly connected to the limiting ring 631.

[0053] Furthermore, the outer surface of the limiting ring 631 is evenly provided with a plurality of second rotating grooves, and a retaining strip 633 is rotatably connected in the second rotating groove through a bearing. A torsion spring is provided in the second rotating groove, and the torsion spring is fixedly connected to the second rotating groove and the retaining strip 633 respectively. An abutment block 632 is fixedly connected to one side of the second rotating groove. The outer end of the retaining strip 633 has a curved surface structure.

[0054] The support plate 150 has a slot 151 on its side wall near the rope shaft 610. The inner side wall of the slot 151 has a plurality of limiting protrusions that are uniformly and continuously provided, and the limiting protrusions are curved.

[0055] When the limiting ring 631 is located in the slot 151, the curved surface of the locking strip 633 abuts against the curved surface of the limiting protrusion and the curved surfaces are in the same direction. When the rope shaft 610 is rotated to raise the second sliding block 431, the curved surface of the locking strip 633 slides on the curved surface of the limiting protrusion in the slot 151 through the rotation of the torsion spring. When the rope shaft 610 is released, the limiting ring 631 rotates in the opposite direction to reset the torsion spring, and the locking strip 633 abuts against the abutment block 632, so that the locking strip 633 is locked between the adjacent limiting protrusions in the slot 151, thereby limiting and fixing.

[0056] This invention utilizes the design of the limiting structure 600. When the channel needs to be lifted and extended, pushing the limiting shaft 630 causes the limiting ring 631 to enter the slot 151. The curved surface of the locking bar 633 abuts against the curved surface of the limiting protrusion, and the curved surfaces are in the same direction. By cranking the rotating handle 623, the transmission steel rope 611 is wound around the rope shaft 610, thereby lifting the second sliding block 431 and thus lifting and extending the channel. Due to the action of the torsion spring, the curved surface of the locking bar 633 will slide on the curved surface of the limiting protrusion in the slot 151, so that the slot 151 does not affect the winding of the rope shaft 610. When the channel has reached the designated position, the rope shaft 610 is released. At this time, due to the gravity of the channel, the rope shaft 610 will be pulled in the opposite direction. The rotation causes the limiting ring 631 to rotate in the opposite direction, resetting the torsion spring. After the torsion spring resets, the locking strip 633 rotates and abuts against the abutment block 632. The outer end of the locking strip 633 is engaged between adjacent limiting protrusions in the slot 151. Since the slot 151 is fixed, the gravity of the channel acts on the abutment block 632, the locking strip 633, and the slot 151, preventing it from falling off, thus achieving limiting and fixing. When it is necessary to lower the channel, simply pull the limiting shaft 630 to move the limiting ring 631 out of the slot 151, and then shake the rotating handle 623 in the opposite direction. This invention, through the structural design of the limiting structure 600, enables the device to be better fixed, is simple to operate, allows the channel to stop at the desired position, and makes the device adjustment more flexible.

[0057] Furthermore, a water tank 500 is fixedly connected to the side of the fish inlet channel 400 away from the second outer edge 420. The top of the water tank 500 is open, and a plurality of water inlet holes 520 are horizontally and evenly opened at the lower end of the side wall of the water tank 500. The water inlet holes 520 are connected to the fish inlet channel 400.

[0058] Furthermore, the water tank 500 has symmetrically arranged slots 540 inside, and a throttling structure is inserted into the slot 540. The throttling structure includes a throttling plate 550, which is inserted into the slot 540. One side of the throttling plate 550 abuts against the inner wall of the water tank 500. The side of the throttling plate 550 has multiple through holes 551, which correspond one-to-one with the water inlet holes 520. The interior of the throttling plate 550 is hollow, and a control plate 560 is inserted through the interior of the throttling plate 550. The control plate 560 has multiple throttling holes 561, which correspond one-to-one with the through holes 551. Two symmetrically arranged sealing connection grooves 530 are opened on the side wall of the water tank 500, and the control plate 560 extends out of the water tank 500 through the corresponding sealing connection grooves 530.

[0059] This invention, through the structural design of the water tank 500, and the cooperation between the throttling plate 550 and the control plate 560, allows the water inlet 520 to flexibly adjust the water flow rate simply by pulling the control plate 560. Simultaneously, the height adjustment of the channel ensures that the fish fry pass through the counting channel 300 at a suitable speed, preventing them from being too fast or too slow, thus facilitating fish fry counting and improving the accuracy of the counting. Furthermore, the multi-hole design makes the water flow more uniform, forming a stable water flow and improving the stability of the speed.

[0060] Furthermore, sealing strips are provided at both ends of the throttling plate 550 where it connects to the water tank 500. The sealing connection groove 530 can also be sealed by the sealing strips.

[0061] The present invention, through the structural design of the control plate 560 and the throttling plate 550, enables the device to reduce the risk of water leakage while controlling the flow rate, and at the same time, the use of the sealing strip enables the device to achieve multiple sealing effects.

[0062] Furthermore, a pulley 160 is installed at the bottom of the base 100, and a handle 170 is fixedly connected to the outer wall of the second n-shaped slide 140. The pulley 160 and the handle 170 can better control the movement of the counter device.

[0063] The above description is a further detailed explanation of the present invention in conjunction with specific implementation examples. It should not be considered that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all such deductions or substitutions should be considered to fall within the protection scope of the present invention.

[0064] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A flexibly adjustable fish fry counter, characterized in that, It includes a base (100), a fish inlet channel (400), a counting channel (300), and a fish outlet channel (200); one end of the base (100) is fixedly connected to two rotating slots (120), and each side end of the fish outlet channel (200) is fixedly provided with a rotating shaft (230), and the rotating shaft (230) is rotatably connected to the corresponding rotating slot (120); one end of the fish outlet channel (200) extends inward and is provided with a first inner edge (240); One end of the counting channel (300) extends outward and is provided with a first outer edge (320), and the other end of the counting channel (300) extends inward and is provided with a second inner edge (370); the first outer edge (320) is located inside the fish outlet channel (200) and is slidably connected to the fish outlet channel (200); the top of the counting channel (300) is connected to a conical channel (330), and a counter body (700) is installed on the top of the conical channel (330); One end of the fish inlet channel (400) extends outward and is provided with a second outer edge (420). The second outer edge (420) is located inside the counting channel (300) and is slidably connected to the counting channel (300). The other end of the fish inlet channel (400) is arranged facing upward. The side wall of the fish inlet channel (400) is connected to the base (100) through a limiting structure (600). Two first n-shaped slides (130) are symmetrically fixedly connected to the middle of the base (100). A first sliding block (360) is fixedly provided on the side of the counting channel (300). The first sliding block (360) is located in the corresponding first n-shaped slide (130) and is slidably connected to the first n-shaped slide (130). Two second n-shaped slides (140) are symmetrically fixedly connected to the end of the base (100) away from the rotating groove (120). A connecting plate (430) is fixedly connected to the side wall of the fish inlet channel (400). A second sliding block (431) is fixedly provided on the connecting plate (430). The second sliding block (431) is located in the corresponding second n-shaped slide (140) and is slidably connected to the second n-shaped slide (140). The limiting structure (600) includes a rotating shaft (620), on which a rope shaft (610) is fixedly connected; a support plate (150) is fixedly connected to one end of the base (100) near the second n-shaped slide (140); one end of the rotating shaft (620) is rotatably connected to the support plate (150) through a bearing; a crossbar (622) is fixedly connected to the other end of the rotating shaft (620); and a rotating handle (623) is fixedly connected to one end of the crossbar (622). The top of the second n-type slide (140) is provided with a through hole, and the second sliding block (431) is fixedly connected with a transmission steel rope (611). The transmission steel rope (611) passes through the corresponding through hole and is fixedly wound around the rope shaft (610). The two transmission steel ropes (611) are wound in opposite directions. The rotating shaft (620) is a hollow structure. A limiting shaft (630) is movably inserted inside the rotating shaft (620). Two through slots (621) are symmetrically opened on the side wall of the rotating shaft (620) located between the support plate (150) and the rope shaft (610). Fixed rods are symmetrically provided on the side wall of the limiting shaft (630). The fixed rods pass through the corresponding through slots (621) and are fixedly connected to the limiting ring (631). The outer side of the limiting ring (631) is evenly provided with a plurality of second rotating grooves. A retaining strip (633) is rotatably connected in the second rotating groove through a bearing. A torsion spring is provided in the second rotating groove. The torsion spring is fixedly connected to the second rotating groove and the retaining strip (633) respectively. An abutment block (632) is fixedly connected to one side of the second rotating groove. The outer end of the retaining strip (633) has a curved surface structure. The support plate (150) has a slot (151) on its side wall near the rope shaft (610). The inner side wall of the slot (151) is provided with a plurality of limiting protrusions, which are curved. When the limiting ring (631) is located in the slot (151), the curved surface of the locking strip (633) abuts against the curved surface of the limiting protrusion and the curved surfaces are in the same direction; when the rope shaft (610) is rotated to raise the second sliding block (431), the curved surface of the locking strip (633) slides on the curved surface of the limiting protrusion of the slot (151) through the rotation of the torsion spring; when the rope shaft (610) is released, the limiting ring (631) rotates in the opposite direction to reset the torsion spring, and the locking strip (633) abuts against the abutment block (632), so that the locking strip (633) is locked between the adjacent limiting protrusions of the slot (151), thereby performing limiting and fixing.

2. The flexibly adjustable fish fry counter according to claim 1, characterized in that, A pair of earpieces (340) are fixedly connected to the bottom of the counting channel (300), and a transmission gear (341) is rotatably connected to the earpieces (340); a first toothed plate (220) is fixedly connected to the bottom of the fish outlet channel (200), and a second toothed plate (450) is fixedly connected to the bottom of the fish inlet channel (400) through a connecting frame (440); the first toothed plate (220) is located above the transmission gear (341) and meshes with the transmission gear (341), and the second toothed plate (450) is located below the transmission gear (341) and meshes with the transmission gear (341); a support frame (350) is also fixedly connected to the bottom of the counting channel (300), and the second toothed plate (450) is located inside the support frame (350) and abuts against the support frame (350).

3. The flexibly adjustable fish fry counter according to claim 1, characterized in that, A water tank (500) is fixedly connected to the side of the fish inlet channel (400) away from the second outer edge (420). The top of the water tank (500) is open, and multiple water inlet holes (520) are evenly and horizontally opened at the lower end of the side wall of the water tank (500). The water inlet holes (520) are connected to the fish inlet channel (400).

4. The flexibly adjustable fish fry counter according to claim 3, characterized in that, The water tank (500) has symmetrically arranged slots (540) inside, and a throttling structure is inserted into the slot (540). The throttling structure includes a throttling plate (550), which is inserted into the slot (540). One side of the throttling plate (550) abuts against the inner wall of the water tank (500). The side of the throttling plate (550) has multiple through holes (551), and each through hole (551) corresponds to a water inlet (520). The throttling plate (550) has a hollow structure inside, and a control plate (560) is inserted through the throttling plate (550). The control plate (560) has multiple throttling holes (561), and the throttling holes (561) correspond one-to-one with the through holes (551). Two sealing connection grooves (530) are symmetrically opened on the side wall of the water tank (500), and the control plate (560) extends out of the water tank (500) through the corresponding sealing connection groove (530).

5. The flexibly adjustable fish fry counter according to claim 4, characterized in that, Both ends of the throttling plate (550) are equipped with sealing strips at the connection points between them and the water tank (500).

6. The flexibly adjustable fish fry counter according to claim 1, characterized in that, The bottom of the base (100) is equipped with a pulley (160), and a handle (170) is fixedly connected to the outer wall of the second n-shaped slide (140).

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