Fodder feeding device and method for fishery breeding

Abstract

The invention relates to the technical field of fishery breeding, in particular to a feed throwing device and method for fishery breeding, the device comprises a distributing assembly, a feeding assembly and a storage assembly installed on a floating ring, the storage assembly is used for storing bait, the bottom of the storage assembly is communicated with the top of the distributing assembly, and the top of the feeding assembly is communicated with the distributing assembly. A feeding assembly is installed at the bottom of the distributing assembly, the storage assembly comprises a hopper, a water pump is installed at the top of the hopper, the water inlet end of the water pump extends to the bottom end of the distributing assembly through a pipeline and then communicates with the outside, and the water outlet end of the water pump communicates with an inner cavity of the distributing assembly through a pipeline; circulating water is generated through the water pump, the feeding device is placed in a living area of prawns in water, for feeding, the situation that the prawns are grabbed by other fishes or sink to the bottom is reduced, meanwhile, the oxygen content of water is increased, and the cost of oxygen supply equipment is reduced; in the feeding process, bubbles are generated to lift up and float the fly maggots, the swimming characteristic of living bodies is generated, and prawns are attracted to prey quickly.

Description

Technical Field

[0001] The present invention relates to the technical field of fishery breeding, and in particular to a feed delivery device and method for fishery breeding. Background Art

[0002] Farming pomfret and shrimp in the same pond is a three-dimensional farming model based on the principle of niche complementarity. It maximizes the farming benefits by making full use of the space and bait resources at different levels of the water body. Pomfret mainly moves in the upper layer of the water body, with the characteristics of group activities and frequent activities during the day, while shrimp mainly moves in the lower water layer, with the habit of hiding during the day and coming out at night. They often lurk at the bottom of the pond during the day and forage at night. This same-pond farming model makes full use of the different levels of the water body, improves the farming benefits per unit water area, and the complementary feeding habits of the two organisms improves the feed utilization rate and forms a benign ecological chain. At the same time, the activities of pomfret can increase the dissolved oxygen in the water body, and the benthic activities of shrimp can turn over the bottom and improve the bottom environment. The complementary ecological habits of the two organisms reduce the risk of disease and maintain the stability of the farming environment.

[0003] As a high-quality bait for shrimp farming, fly maggots play multiple important roles. They are rich in nutrients such as high-quality protein, essential amino acids and unsaturated fatty acids, which are highly matched with the nutritional needs of shrimp and are beneficial to the growth, development and nutritional metabolism of shrimp. At the same time, they have good living dynamic characteristics and are naturally floating in the water. Their freshness and special smell can effectively stimulate the predatory behavior of shrimp, stimulate their foraging instincts, and increase their feeding rate. The body wall of fly maggots is relatively soft and easy for shrimp to digest and absorb. It can reduce fecal discharge, improve feed conversion efficiency, and reduce the risk of water pollution. In addition, the various bioactive substances contained in fly maggots can improve the immunity of shrimp, enhance disease resistance, and reduce the incidence of disease. The rational use of fly maggots as shrimp farming bait can not only improve the farming effect, but also have significant ecological and economic benefits.

[0004] A Chinese patent document (publication number: CN110754411B) discloses an automatic feeding machine for fishery farming, comprising a frame, a paddling mechanism, a direction control mechanism, a feeding mechanism, a buoyancy adjustment mechanism, a battery and a controller; the paddling mechanism is fixedly mounted on the frame symmetrically about the axis of the length direction of the frame, and the working end of the paddling mechanism contacts the water when working; the direction control mechanism is fixedly mounted on the central axis of the frame, and the working end of the direction control mechanism extends into the water when working; the feeding mechanism is fixedly mounted on the frame and the bottom passes through the frame; the buoyancy adjustment mechanism is fixedly mounted around the frame, and the battery is fixedly mounted on the frame; the technical solution solves the problem of uneven feeding of fish food in the prior art, the direction adjustment is convenient and controllable, the environmental requirements are low, the application range is wide, and it is suitable for both uniform feeding and concentrated feeding, avoiding waste of fish food.

[0005] In a mixed culture environment of pomfret and shrimp, when feeding fly maggots to shrimp, the fly maggots are directly thrown on the water surface, and other fish will snatch the maggots for food, or the fly maggots spread over a large area in the water, making it difficult for shrimp to eat them in time, resulting in a large amount of bait being deposited at the bottom of the pond and rotting, polluting the water quality; additional feeding equipment is required in the culture environment, increasing costs;

[0006] When feeding fly maggots, in order to save costs, maggots purchased in bulk are used for feeding. The fly maggots are transported frozen and no longer have the specific movement characteristics of living things. They lack appeal and are difficult to attract the attention of shrimps. Summary of the invention

[0007] In view of the shortcomings of the prior art, the present invention provides a feed delivery device and method for fishery breeding. A water pump is used to generate circulating water to place the feeding device in the living area of ​​prawns in the water. For feeding, the maggots are prevented from being snatched away by other fish or sinking to the bottom. At the same time, the oxygen content of the water body is increased, and the expenditure on oxygen supply equipment is reduced. During the feeding process, water bubbles are generated to lift the maggots and float them, generating the swimming characteristics of the living body, and attracting the prawns to quickly prey.

[0008] In order to achieve the above object, the present invention adopts the following technical solution:

[0009] A feed delivery device for fishery breeding, comprising a feed distribution component, a feed feeding component and a storage component installed on a floating ring, wherein the storage component is used to store bait, the bottom of the storage component is connected to the top of the feed distribution component, the feed feeding component is installed at the bottom of the feed distribution component, the storage component comprises a hopper, a water pump is installed on the top of the hopper, the water inlet end of the water pump extends to the bottom end of the feed distribution component through a pipeline and then communicates with the outside, and the water outlet end of the water pump is connected to the inner cavity of the feed distribution component through a pipeline; the feed distribution component comprises a cylinder, the bottom of the cylinder is sealed, a lifting rod is installed inside the cylinder, an opening and closing unit is arranged on the upper part of the lifting rod, the opening and closing unit controls the hopper to release bait at intervals, a pushing unit is arranged at the bottom of the lifting rod, and the pushing unit is connected through an outlet The bait inside the cylinder is transferred to the feeding assembly. During the bait transfer process, the pushing unit discharges the air inside the cylinder and avoids water backflow. The feeding assembly includes a rotating drum and a lifting unit. The rotating drum is rotatably installed at the bottom of the cylinder. An outer cavity is arranged on the inner wall of the rotating drum. The outer cavity is communicated with the outlet of the pushing unit. A plurality of inclined holes are opened on the outer cavity. The inclined holes connect the outer cavity with the outside. The openings of the inclined holes are arranged along the tangential direction of the rotating drum. The lifting unit includes a U-shaped frame, which is fixedly connected to the lifting rod. The rotating drum rotates under the reverse thrust of the water flow generated by the water pump, driving the U-shaped frame and the lifting rod to move up and down together, so that the pushing unit sends the bait and air inside the hopper to the outside of the rotating drum, so that the bait is in a floating state.

[0010] Preferably, a partition is arranged on the upper part of the cylinder to divide the interior into two downward channels, a limiting groove is opened inside the partition along the axial direction of the cylinder, a center cylinder is arranged in the middle part of the partition along the axial direction, and the center cylinder is connected with the interior of the limiting groove; an inner cylinder is fixedly arranged in the bottom cavity of the cylinder, the inner cylinder has a piston cylinder, and an inclined surface is arranged on the top of the inner cylinder; an outlet and an inlet are respectively opened on the side walls of the mixing chamber below the inner cylinder, and the inlet is connected with the water outlet end of the water pump.

[0011] Preferably, the lifting unit also includes a cam groove, which is opened on the outer circumference of the rotating drum, and the cam groove is a continuously closed curved groove. Guide rods are provided at both ends of the U-shaped frame, and the ends of the two guide rods away from the U-shaped rods are slidably installed inside the cam groove, and the cross bar of the U-shaped frame is slidably penetrated into the limiting through groove.

[0012] Preferably, the pushing unit includes a lower piston, a middle piston and an upper piston installed in the piston cylinder, the lower piston is fixedly installed on the bottom end of the lifting rod, the middle piston is slidably installed on the lifting rod, the upper piston is fixedly installed on the lifting rod, and the upper piston is located above the middle piston, a tension spring is installed between the bottom end of the upper piston and the top end of the middle piston, and a snap-fit ​​component is arranged between the middle piston and the inner cylinder.

[0013] Preferably, the buckle component includes a slide groove, a return spring, a locking rod, a U-shaped groove, a boss, a push rod, a first connecting rod, a balance rod, a roller, a second connecting rod and a pin shaft. A slide groove is provided on the side wall of the middle piston, and a U-shaped groove is provided on the inner wall of the inner cylinder. Both ends of the U-shaped groove are spaced apart along the axial direction of the cylinder body. The upper end opening of the U-shaped groove is arranged opposite to the slide groove, and a boss is arranged inside the lower end opening of the U-shaped groove; a push rod is slidably arranged in the upper end opening of the U-shaped groove, and a roller is arranged in the lower end opening of the U-shaped groove. A balance rod is installed in the vertical section of the U-shaped groove through a pin shaft, the top of the balance rod is hinged to the push rod through the first connecting rod, and the bottom of the balance rod is hinged to the roller through the second connecting rod; a return spring and a locking rod are installed inside the slide groove, and the locking rod slides against the inner wall of the inner cylinder.

[0014] Preferably, the opening and closing unit includes a first butterfly plate, a second butterfly plate, a third butterfly plate and an arc plate, the first butterfly plate and the second butterfly plate are arranged in an overlapping manner and are both fixedly installed on the top of the partition, the third butterfly plate is slidably installed between the first butterfly plate and the second butterfly plate, and the third butterfly plate is arranged at an angle to the upper and lower butterfly plates; an arc plate is fixed on the lifting rod, and extension plates are respectively arranged at the upper and lower ends of the arc plate, the extension plate is a rectangular structure, and the upper and lower extension plates are arranged perpendicular to each other; circular holes are provided in the middle of the first butterfly plate and the second butterfly plate, and the circular holes are used to accommodate the rotation of the arc plate and the extension plate; a flat hole is provided in the middle of the third butterfly plate, and a small circular hole is added in the middle of the flat hole to accommodate the up and down movement of the lifting rod, the arc plate and the extension plate. When the lifting rod moves up and down, the third butterfly plate is driven to rotate, and an opening or closing switch is formed between the third butterfly plate and the upper and lower butterfly plates.

[0015] Preferably, bearings and sealing rings are installed on the upper and lower parts of the rotating drum, and the two bearings are located on the outside of the sealing ring.

[0016] Preferably, a support plate is fixedly mounted at the middle of the top of the hopper, the water pump is fixedly mounted on the support plate, and cover plates are respectively mounted on both sides of the support plate.

[0017] Preferably, a water inlet pipeline and a water outlet pipeline are arranged from the hopper to the cylinder, and the water inlet pipeline and the water outlet pipeline are both transported through holes opened in the inner walls of the hopper and the cylinder.

[0018] Preferably, the method of feeding feed using the device comprises the following steps:

[0019] S1. Storage material preparation steps:

[0020] Open the covers on both sides of the hopper, place the fly maggots in the hopper, and then fix the covers; put the hopper of the device in a floating ring with an inner diameter larger than the outer diameter of the hopper, so that the hopper is located directly above the living area of ​​the shrimp, and the lower part of the device is immersed in water to a depth of 50-100 cm; start the water pump to feed the fly maggots;

[0021] S2, reciprocating steps:

[0022] The crossbar of the U-shaped frame is guided by the limit slot and cooperates with the sliding of the guide rods at both ends in the cam slot on the outer periphery of the drum to convert the rotary motion of the drum into a stable up and down reciprocating motion, driving the lifting rod and the U-shaped frame to reciprocate up and down together; the outer surface of the drum is provided with a cam slot, and the cam slot forms a continuous closed curve shape; the guide rods at both ends of the U-shaped frame are installed in the cam slot through rolling bearings; the crossbar of the U-shaped frame passes through the limit slot on the drum body; double-row angular contact ball bearings are installed at both ends of the drum, and nitrile rubber sealing rings are arranged on the outside of the bearings to ensure stability and sealing during rotation;

[0023] S3, material distribution control steps:

[0024] The lifting rod drives the arc plate and the extension plate to reciprocate up and down, and the arc plate and the extension plate move up and down in the third butterfly plate, driving the third butterfly plate to rotate within the range of 0-90 degrees, realizing the opening and closing of the opening and closing unit, and completing the feeding of fly maggots; the first butterfly plate and the second butterfly plate are fixedly installed at the bottom of the partition, so that the two butterfly plates are overlapped and form a fixed opening; the third butterfly plate is installed between the first butterfly plate and the second butterfly plate; the arc plate is fixedly set on the periphery of the lifting rod, and the upper and lower ends of the arc plate are respectively vertically extended to form a 90-degree extension plate, and the length of the extension plate matches the width of the third butterfly plate; when the lifting rod moves upward, the arc plate and the lower end extension plate contact the third butterfly plate and drive it to rotate 90 degrees, forming a quarter fan-shaped opening between the first butterfly plate and the second butterfly plate, so that the bait falls; the extension plate maintains vertical contact with the third butterfly plate to prevent the third butterfly plate from generating additional rotation;

[0025] S4, push delivery steps:

[0026] The working process of the push unit is divided into two stages: filling and pushing:

[0027] S41, filling stage: the upper piston and the middle piston are tightly fitted and located above the piston cylinder, and the lower piston is located at the bottom of the piston cylinder to form a seal; at this time, the bait falls into the piston cylinder through the opening and closing unit;

[0028] S42, pushing stage: the upper piston and the lower piston move downward synchronously driven by the lifting rod, and the middle piston is fixed to the inner wall of the piston cylinder by the buckle component to form a new sealing point;

[0029] S421, when the lock rod enters the U-shaped groove, the return spring pushes the lock rod to contact the inclined surface of the push rod; through the lever action of the balance bar, the roller extends into the piston cylinder;

[0030] S422, when the lower piston moves upward and touches the roller, the push rod is pushed in the opposite direction through the balance rod; the lock rod is compressed by the push rod and exits the U-shaped groove, releasing the middle piston;

[0031] At least one piston is always kept in contact with the cylinder wall in the piston cylinder to form a sealing structure to prevent water from flowing back;

[0032] S43, bait output step:

[0033] The water pump pumps the water flow into the mixing chamber through the outlet, and the middle piston pushes the fly maggots and air from the inside of the piston cylinder into the mixing chamber to mix with the water flow. After mixing, the maggots enter the outer chamber through the outlet and are finally discharged to the outside through the inclined hole. The discharged air and water flow mix to generate bubbles that lift the fly maggots to form a floating state, making the fly maggots show the dynamic characteristics of a living body.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] 1. The device of the present invention conveys water from the bottom of the device to the inside of the mixing chamber 26 through the water pump 13. The water flow in the mixing chamber 26 mixes the bait pushed out by the pushing unit with the air and then discharges them through the inclined hole 21. The reverse thrust formed causes the rotating drum 19 to rotate, driving the up and down reciprocating motion of the lifting component, driving the intermittent opening of the opening and closing unit to provide bait; the air and water flow discharged from the inclined hole 21 mix to generate bubbles to lift the bait to form a floating state, so that the feed presents the dynamic characteristics of a living body, which not only improves the predation efficiency of shrimps, increases the amount of exercise of shrimps, promotes meat growth, but also avoids the problem of feed sinking to the bottom and rotting to pollute the water quality. The water pump 13 conveys the water from the bottom of the device to the inside of the mixing chamber 26 through the pipeline, and then discharges it through the inclined hole 21. During the feeding process, a water flow circulation is formed in the living water area of ​​the shrimps, and the oxygen content of the water flow is increased, which is beneficial to the survival and growth of the shrimps.

[0036] 2. The cross bar of the U-shaped frame 18 of the lifting assembly of the present invention is guided by the limit groove 17, and cooperates with the sliding of the guide rods 22 at both ends in the cam groove 20 on the outer periphery of the rotating drum 19 to convert the rotational motion of the rotating drum 19 into a stable up and down reciprocating motion; by arranging a partition 35 on the upper part of the cylinder 16 to divide the interior into two downward channels, and opening a limit groove 17 and a center cylinder 34 inside the partition 35 along the axial direction of the cylinder, the effective separation of the falling of bait and mechanical movement is achieved; the lifting rod 29 and the arc plate 36 are installed in the center cylinder 34, and move with the U-shaped frame 18, driving the three pistons in the piston cylinder 33 to switch positions, pushing the bait to the mixing chamber 26 while expelling air to generate bubbles, so that the bait is in a floating state, simulating the dynamic characteristics of a living body.

[0037] 3. The opening and closing unit of the present invention adopts a three-piece butterfly plate structure with a specially designed arc plate to realize bait delivery; the first butterfly plate 37 and the second butterfly plate 38 are fixedly installed at the bottom of the partition 35 and leave a gap, and the circular holes in the middle of the two butterfly plates are used to accommodate the rotation of the arc plate 36 and the extension plate; the third butterfly plate 39 is installed between the two fixed butterfly plates, and the flat hole and the small circular hole opened in the middle cooperate with the movement of the lifting rod 29 and the arc plate 36. The arc plate 36 is designed to be inclined at 90 degrees, and the rectangular extension plates at the upper and lower ends are arranged perpendicular to each other. This structure ensures that the third butterfly plate 39 can stably rotate within the range of 0-90 degrees. When the lifting rod 29 rises, the arc plate 36 drives the third butterfly plate 39 to rotate 90 degrees to open the gap to allow the bait to fall. When the lifting rod 29 rises, the bait inside the hopper 11 is loosened and unblocked to avoid jamming; when it descends, the third butterfly plate 39 rotates in the opposite direction to close the gap and stop feeding; after the rotation is completed, the extension plate always remains in a vertical state to prevent the third butterfly plate 39 from rotating extra. The special design of the arc plate 36 and the extension plate ensures the stability and reliability of the opening and closing process, avoiding the problem of accidental leakage or blockage of bait. At the same time, the coordinated cooperation between the opening and closing unit and the lifting mechanism enables the bait to fall intermittently according to a predetermined rhythm, which not only ensures the uniformity of feeding, but also avoids excessive feeding of bait.

[0038] 4. The pushing unit of the present invention adopts a three-layer piston structure in cooperation with a snap-fit ​​component to achieve the dual functions of precise pushing of bait and bubble generation; the lower piston 30 and the upper piston 32 are fixed on the lifting rod 29, and the spacing between them is smaller than the axial distance of the piston cylinder 33, ensuring that there is always a piston in the cylinder to form a seal during operation; the conical design on the top of the upper piston 32 facilitates the rapid sliding of the bait, and the blind hole at the bottom provides installation space for the tension spring 51; the middle piston 31 can slide on the lifting rod 29, and is fixed and separated by the snap-fit ​​component.

[0039] The working process of the push unit is divided into two stages: filling and pushing. During filling, the upper piston 32 and the middle piston 31 are attached and located above the piston cylinder 33, and the lower piston 30 is sealed at the bottom of the cylinder; during pushing, the upper and lower pistons move downward synchronously, and the middle piston 31 is fixed to the piston cylinder 33 through the buckle component to form a new sealing point; the buckle component is composed of a slide groove 41, a return spring 42, a locking rod 43 and other structures, and the balance rod 48 drives the push rod 46 and the roller 49 to rotate to realize the locking function. When the locking rod 43 enters the U-shaped groove 44, the return spring 42 pushes the locking rod 43 to contact the push rod 46, and the roller 49 is extended through the lever action of the balance rod 48; when the lower piston 30 touches the roller 49, the reverse push causes the locking rod 43 to withdraw and release the middle piston 31.

[0040] This structural design ensures that there is always a piston in the piston cylinder 33 to form a seal, which not only prevents the water flow of the mixing chamber 26 from flowing back, but also pushes the air into the mixing chamber 26 together with the bait. The exhausted air forms bubbles under the action of the water flow, which lifts the bait and presents the dynamic characteristics of a living body, which not only promotes the rapid predation of shrimps and improves the breeding efficiency, but also prevents the bait from sinking to the bottom and rotting to pollute the water quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a three-dimensional diagram of the overall installation structure of the device of the present invention;

[0042] Figure 2 A three-dimensional diagram of the internal installation structure of the device of the present invention;

[0043] Figure 3 A stereoscopic diagram of the installation structure of the push unit of the device of the present invention;

[0044] Figure 4 The device of the present invention is attached Figure 3 A magnified view of the buckle part of "A" in the middle;

[0045] Figure 5 It is a three-dimensional schematic diagram of the split structure of the opening and closing unit of the device of the present invention;

[0046] Figure 6 It is a schematic diagram of the internal structure of the device of the present invention;

[0047] In the figure: hopper 11; support plate 12; water pump 13; water inlet pipe 14; water outlet pipe 15; cylinder 16; limit slot 17; U-shaped frame 18; rotating cylinder 19; cam slot 20; inclined hole 21; guide rod 22; bearing 23; sealing ring 24; annular groove 25; mixing chamber 26; inlet 27; outlet 28; lifting rod 29; lower piston 30; middle piston -31; upper piston-32; piston cylinder-33; center cylinder-34; partition-35; arc plate-36; first butterfly plate-37; second butterfly plate-38; third butterfly plate-39; inner cylinder-40; slide groove-41; return spring-42; lock rod-43; U-shaped groove-44; boss-45; push rod-46; first connecting rod-47; balance rod-48; roller-49; second connecting rod-50; tension spring-51. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0049] Contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0050] Figure 1-Figure 6 As shown in, a feed delivery device for fishery breeding includes a feed distribution component, a feed feeding component and a storage component installed on a floating ring, the storage component is used to store bait, the bottom of the storage component is connected to the top of the feed distribution component, the feed feeding component is installed at the bottom of the feed distribution component, the storage component includes a hopper 11, a water pump 13 is installed on the top of the hopper 11, the water inlet end of the water pump 13 extends to the bottom end of the feed distribution component through a pipeline and then communicates with the outside, and the water outlet end of the water pump 13 is connected to the inner cavity of the feed distribution component through a pipeline;

[0051] The material distribution assembly includes a cylinder 16, the bottom of the cylinder 16 is sealed, a lifting rod 29 is installed inside the cylinder 16, an opening and closing unit is arranged on the upper part of the lifting rod 29, the opening and closing unit controls the hopper 11 to release bait at intervals, and a pushing unit is arranged at the bottom of the lifting rod 29, the pushing unit transfers the bait inside the cylinder 16 to the feeding assembly through the outlet 28, and during the transfer of the bait, the pushing unit discharges the air inside the cylinder 16 and prevents water from backflowing;

[0052] The feeding assembly includes a rotating drum 19 and a lifting unit. The rotating drum 19 is rotatably mounted at the bottom of the cylinder 16. An annular groove 25 is arranged inside the rotating drum 19. The annular groove 25 is communicated with an outlet 28 of the pushing unit. A plurality of inclined holes 21 are opened on the annular groove 25. The inclined holes 21 connect the annular groove 25 with the outside. The openings of the inclined holes 21 are arranged along the tangent direction of the rotating drum 19. The lifting unit includes a U-shaped frame 18, which is fixedly connected to a lifting rod 29.

[0053] The drum 19 rotates under the reverse thrust of the water flow generated by the water pump 13, driving the U-shaped frame 18 and the lifting rod 29 to move up and down together, driving the pushing unit to send the bait and air inside the hopper 11 to the outside of the drum 19, so that the bait is in a floating state.

[0054] When in use, the hopper 11 of the device is sleeved in the floating ring, and then placed together in the living area of ​​the prawns, so that the lower part of the device is located in the water for feeding. One side of the water pump 13 can be equipped with a charging power supply, or an external power supply is used, and the circuit is waterproof.

[0055] The device of the present invention conveys water from the bottom of the device to the inside of the mixing chamber 26 through the water pump 13. The water flow in the mixing chamber 26 mixes the bait pushed out by the pushing unit with air and discharges them together through the inclined hole 21. The air and water flow mix to generate bubbles that lift the bait to form a floating state, making the feed present the dynamic characteristics of a living body, which not only improves the predation efficiency of the shrimp, increases the amount of exercise of the shrimp, promotes the growth of meat quality, but also avoids the problem of the feed sinking to the bottom and rotting to pollute the water quality. The water pump 13 conveys the water from the bottom of the device to the inside of the mixing chamber 26 through the pipeline, and then discharges it through the inclined hole 21. During the feeding process, a water flow circulation is formed in the living water area of ​​the shrimp, and the oxygen content of the water flow is increased, which is beneficial to the survival and growth of the shrimp.

[0056] Furthermore, a partition 35 is provided on the upper part of the cylinder 16 to divide the interior into two downward channels, a limiting groove 17 is provided inside the partition 35 along the axial direction of the cylinder, a center cylinder 34 is provided in the middle part of the partition 35 along the axial direction, and the center cylinder 34 is connected with the interior of the limiting groove 17; an inner cylinder 40 is fixed in the bottom cavity of the cylinder 16, the inner cylinder 40 has a piston cylinder 33, and an inclined surface is provided on the top of the inner cylinder 40; an outlet 28 and an inlet 27 are respectively provided on the side walls of the mixing chamber 26 below the inner cylinder 40, and the inlet 27 is connected with the water outlet end of the water pump 13.

[0057] See also Figure 2 The partition 35 divides the interior of the cylinder 16 into two descending channels, which is conducive to the bait inside the hopper 11 of the storage assembly falling into the pushing unit at the bottom of the cylinder 16;

[0058] A limiting groove 17 is provided inside the partition 35 along the axial direction of the cylinder body, and the cross bar of the U-shaped frame 18 is slidably installed in the limiting groove 17, which is conducive to the up and down reciprocating movement of the U-shaped frame 18; a central tube 34 is provided in the middle of the partition 35, and the central tube 34 is connected to the inside of the limiting groove 17, and the lifting rod 29, the arc plate 36 and the extension plate are installed in the central tube 34, which is conducive to the up and down reciprocating movement with the U-shaped frame 18;

[0059] An inner cylinder 40 is fixed in the bottom cavity of the cylinder 16, and the inner cylinder 40 can also be integrally formed with the cylinder 16. The piston cylinder 33 of the inner cylinder 40 is equipped with three pistons to switch positions, so that the air inside the cylinder 16 is discharged while pushing the bait. The discharged air forms bubbles with the water flow, and the generated bubbles lift the bait (such as maggots) to form a floating state, so that the bait (such as maggots) produces living dynamics, induces shrimps to prey quickly, enhances the adaptability of shrimps, improves motor function, promotes healthy and rapid growth, and improves the breeding quality; the bait (such as maggots) with living dynamics is preyed on in time when it is in a floating state in the water flow, which reduces sinking into the soil for further decomposition, and avoids pollution to the water body and the breeding environment.

[0060] See also Figure 2 and Figure 3 An inclined surface is provided at the top of the inner cylinder 40, which is conducive to the bait to slide down quickly into the piston cylinder 33. An outward expansion structure is provided at the opening of the piston cylinder 33, which is conducive to the piston entering the piston cylinder 33 from the outside, thereby increasing the range of deviation correction.

[0061] Furthermore, the lifting unit also includes a cam groove 20, which is opened on the outer periphery of the rotating drum 19, and the cam groove 20 is a continuously closed curved groove. Guide rods 22 are provided at both ends of the U-shaped frame 18, and the ends of the two guide rods 22 away from the U-shaped rods are slidably installed inside the cam groove 20, and the cross bar of the U-shaped frame 18 is slidably penetrated into the limiting through groove 17.

[0062] See also Figure 1 The cam groove 20 is arranged on the outer periphery of the rotating drum 19, and the guide rods 22 at both ends of the U-shaped frame 18 are slidably installed in the cam groove 20. When the rotating drum 19 rotates, the curved cam groove 20 drives the guide rods 22 on both sides to realize up and down reciprocating displacement; the guide rods 22 on both sides are always in the same high and low state in the cam groove 20, maintaining the stability of the reciprocating transmission, and the cross bar of the U-shaped frame 18 is slidably inserted into the limit groove 17 to realize stable up and down reciprocating motion.

[0063] Furthermore, the pushing unit includes a lower piston 30, a middle piston 31 and an upper piston 32 installed in the piston cylinder 33, the lower piston 30 is fixedly installed on the bottom end of the lifting rod 29, the middle piston 31 is slidably installed on the lifting rod 29, the upper piston 32 is fixedly installed on the lifting rod 29, and the upper piston 32 is located above the middle piston 31, a tension spring 51 is installed between the bottom end of the upper piston 32 and the top end of the middle piston 31, a blind hole (not shown in the figure) is opened at the bottom of the upper piston 32 to provide space for accommodating the tension spring 51, and a snap-fit ​​component is arranged between the middle piston 31 and the inner cylinder 40.

[0064] See also Figure 2 , Figure 3and Figure 6 When the lifting rod 29 moves up and down, it drives the three pistons to move up and down, wherein the upper piston 32 and the lower piston 30 are fixedly mounted on the lifting rod 29, and the distance between the upper piston 32 and the lower piston 30 is smaller than the axial distance of the piston cylinder 33, ensuring that during operation, there is always a piston located inside the piston cylinder 33, isolating the upper and lower parts of the cylinder 16, preventing the water at the bottom from flowing into the upper part, and ensuring that the air at the upper part can enter the mixing chamber 26 through the pushing unit and then be discharged, and the discharged air forms bubbles with the water flow, and the generated bubbles lift the bait (such as maggots) to form a floating state, so that the bait (such as maggots) produces a living body dynamic, inducing the shrimp to quickly prey.

[0065] The upper piston 32 fits tightly against the piston cylinder 33, and there is sufficient contact area between the two in the axial direction to ensure sealing and sliding stability; the top of the upper piston 32 is set to be conical. When the upper piston 32 is separated from the piston cylinder 33 and is located above it, when the bait falls on the conical top of the upper piston 32, it can quickly slide down into the piston cylinder 33.

[0066] When the pushing unit is working, the piston cylinder 33 has two states: filling bait and pushing bait;

[0067] When the bait is filled, the lifting rod 29 drives the three pistons to the upper position, the upper piston 32 and the middle piston 31 are in a close fit, and both are located above the top opening of the piston cylinder 33, and the lower piston 30 is located at the inner bottom of the piston cylinder 33 to form a sealed state; at this time, the lifting rod 29 drives the upper opening and closing unit to open, so that the bait in the hopper 11 falls into the piston cylinder 33;

[0068] When pushing bait, the lifting rod 29 drives the three pistons to the lower position, the upper piston 32 and the middle piston 31 are in a fitted state, and both are displaced downward in the piston cylinder 33, the lower piston 30 moves downward to fall off the piston cylinder 33, and the upper piston 32 and the middle piston 31 push the bait in the piston cylinder 33 into the mixing chamber 26; when the upper piston 32 and the middle piston 31 move downward together, the buckle parts between the middle piston 31 and the inner wall of the piston cylinder 33 form a fixed position, and at this time the middle piston 31 forms a sealing state with the piston cylinder 33;

[0069] When the pushing of the bait is completed, the lifting rod 29 moves upward, driving the upper piston 32 and the lower piston 30 to move upward together. At this time, the middle piston 31 is fixedly connected to the inner wall of the piston cylinder 33 by a snap-fit ​​component; when the lower piston 30 continues to move upward and touches the roller 49 of the snap-fit ​​component, the snap-fit ​​component releases the limiting connection to the middle piston 31, and under the action of the tension spring 51, the middle piston 31 and the upper piston 32 are fitted together, and the lower piston 30 and the inner wall of the piston cylinder 33 form a sealing state; this cycle is repeated to enter the next bait filling process.

[0070] Furthermore, the buckle component includes a slide groove 41, a return spring 42, a locking rod 43, a U-shaped groove 44, a boss 45, a push rod 46, a first connecting rod 47, a balance rod 48, a roller 49, a second connecting rod 50 and a pin; a slide groove 41 is provided on the side wall of the middle piston 31, and a U-shaped groove 44 is provided on the inner wall of the inner cylinder 40, and the two ends of the U-shaped groove 44 are spaced apart along the axial direction of the cylinder body 16, and the upper end opening of the U-shaped groove 44 is arranged opposite to the slide groove 41, and the lower end opening of the U-shaped groove A boss 45 is provided inside the opening; a push rod 46 is slidably provided in the upper opening of the U-shaped groove 44, a roller 49 is provided in the lower opening of the U-shaped groove 44, a balance rod 48 is installed in the vertical section of the U-shaped groove 44 through a pin shaft, the top of the balance rod 48 is hinged to the push rod 46 through a first connecting rod 47, and the bottom of the balance rod 48 is hinged to the roller 49 through a second connecting rod 50; a return spring 42 and a locking rod 43 are installed inside the slide groove 41, and the locking rod 43 slides against the inner wall of the inner tube 40.

[0071] See also Figure 4 In the embodiment, the balance bar 48 drives the push rod 46 and the roller 49 to rotate around the pin shaft. When the roller 49 is located at the lower end opening of the U-shaped groove 44, the push rod 46 is located at the upper end opening of the U-shaped groove 44. The bottom of the balance bar 48 abuts against the convex shoulder 45, restricting the second connecting rod 50 and the roller 49 from further penetrating into the U-shaped groove 44, and restricting the convex rod 46 from extending out of the U-shaped groove 44.

[0072] When the pushing unit is working, in the process of the lifting rod 29 driving the three pistons to move downward, when the locking rod 43 slides to the upper opening of the U-shaped groove 44, under the action of the return spring 42, the locking rod 43 is pushed into the upper opening of the U-shaped groove 44, and the locking rod 43 squeezes the push rod 46 and the first connecting rod 47 to move into the U-shaped groove 44, and under the action of the balance rod 48, the roller 49 and the second connecting rod 50 are driven to extend from the U-shaped groove 44;

[0073] During the upward movement of the lifting rod 29, the middle piston 31 slides in contact with the lifting rod 29, and the middle piston 31 stays at the position of the buckle component. The lifting rod 2 drives the upper piston 32 and the lower piston 30 to move upward together. When the outer wall of the lower piston 30 abuts the roller 49, the roller 49 and the second connecting rod 50 are squeezed into the U-shaped groove 44. Under the action of the balance rod 48, the first connecting rod 47 and the push rod 46 are driven to move toward the opening of the U-shaped groove 44, and the locking rod 43 is pushed out. At this time, the tension spring 51 pulls the middle piston 31 to the upper piston 32. Under the action of the snap-fit ​​component, the fixing and separation switching of the middle piston 31 is realized, and while the bait is pushed out, it is ensured that there is always a piston inside the piston cylinder 33, so as to separate the mixing chamber 26 and the piston cylinder 33, and prevent the water flow inside the mixing chamber 26 from entering the upper part of the piston cylinder 33, which is conducive to the pushing component to discharge the air along with the water flow, and generate bubbles to lift the bait (such as maggots), so as to form living dynamic bait (such as maggots), and the bait (such as maggots) is preyed in time when it is in a floating state in the water flow, which promotes the growth of shrimps while reducing the sinking and corruption of the bait to pollute the water quality.

[0074] Furthermore, the opening and closing unit includes a first butterfly plate 37, a second butterfly plate 38, a third butterfly plate 39 and an arc plate 36, wherein the first butterfly plate 37 and the second butterfly plate 38 are arranged in an overlapping manner and are both fixedly mounted on the top of the partition 35, the third butterfly plate 39 is slidably mounted between the first butterfly plate 37 and the second butterfly plate 38, and the third butterfly plate 39 is arranged at 90 degrees to the upper and lower butterfly plates; the arc plate 36 is fixedly mounted on the lifting rod 29, and extension plates are respectively arranged at the upper and lower ends of the arc plate 36, and the extension plates are rectangular parallelepiped. Structure, the upper and lower extension plates are vertically arranged at 90 degrees to each other; circular holes are provided in the middle of the first butterfly plate 37 and the second butterfly plate 38, and the circular holes are used to accommodate the rotation of the arc plate 36 and the extension plate; a flat hole is provided in the middle of the third butterfly plate 39, and a small circular hole is further provided in the middle of the flat hole to accommodate the up and down movement of the lifting rod 29, the arc plate 36 and the extension plate. When the lifting rod 29 moves up and down, the third butterfly plate 39 is driven to rotate, and an opening or closing switch is formed between the third butterfly plate 39 and the upper and lower butterfly plates.

[0075] See also Figure 2 and Figure 5 The first butterfly plate 37 and the second butterfly plate 38 are fixedly mounted inside the cylinder 16. The first butterfly plate 37 and the second butterfly plate 38 are located at upper and lower positions and retain a certain distance. The first butterfly plate 37 and the second butterfly plate 38 are located at the upper part of the partition 35 and have a notch. The notch enables the channels on both sides of the partition 35 to communicate with the hopper 11, which is beneficial for the bait in the hopper 11 to fall into the cylinder 16 through the notch.

[0076] A third butterfly plate 39 is rotatably installed between the first butterfly plate 37 and the second butterfly plate 38. The main body of the third butterfly plate 39 is located at the gap between the first butterfly plate 37 and the second butterfly plate 38 to prevent the bait from above from falling. When the lifting rod 29 rises and drives the arc plate 36 and the extension plate to move, the arc plate 36 and the extension plate move upward in the third butterfly plate 39, driving the third butterfly plate 39 to rotate 90 degrees to open the gap and allow the bait to fall. When the lifting rod 29 descends, the third butterfly plate 39 is rotated 90 degrees in the opposite direction to close the gap and prevent the bait from above from falling.

[0077] Among them, the arc plate 36 is inclined at 90 degrees, the extension plates at the upper and lower ends of the arc plate 36 are rectangular structures, and the upper and lower extension plates are vertically set at 90 degrees. When the third butterfly plate 39 completes a 90-degree rotation through the arc plate 36, the extension plate is in a vertical sliding state in the third butterfly plate 39 and will not change the angle of the third butterfly plate 39; the third butterfly plate 39 is kept converted between 0-90 degrees to open or close the bait port.

[0078] Furthermore, bearings 23 and sealing rings 24 are installed at the upper and lower parts of the rotating drum 19 , and the two bearings 23 are located outside the sealing ring 24 .

[0079] See also Figure 6 The bearing 23 is used to realize the stable rotation of the drum 19. At the same time, the sealing ring 24 is located on the inside to effectively prevent water and air leakage. This structural arrangement enables the bearing 23 to better withstand the rotation load, and the sealing ring 24 can fully play the sealing role, ensuring the stability and reliability of the rotation of the drum 19.

[0080] Furthermore, a support plate 12 is fixedly mounted at the middle of the top of the hopper 11 , the water pump 13 is fixedly mounted on the support plate 12 , and cover plates are respectively mounted on both sides of the support plate 12 .

[0081] See also Figure 1 The support plate 12 provides a stable installation foundation for the water pump 13. At the same time, the cover plate protects the bait inside the hopper 11 to prevent rainwater from entering or birds from snatching food. Bait can also be added by opening the cover plate.

[0082] Furthermore, a water inlet pipeline 14 and a water outlet pipeline 15 are provided from the hopper 11 to the cylinder 16 , and the water inlet pipeline 14 and the water outlet pipeline 15 are both transported through holes opened in the inner walls of the hopper 11 and the cylinder 16 .

[0083] The water pump 13 transports the water at the bottom of the device to the inside of the mixing chamber 26 through the pipeline, and then discharges it through the inclined hole 21. During the feeding process, water circulation is formed in the living water area of ​​the shrimp, and the oxygen content of the water flow is enhanced, which is beneficial to the survival and growth of the shrimp.

[0084] The method for feeding feed using the device comprises the following steps:

[0085] S1. Storage material preparation steps:

[0086] Open the covers on both sides of the hopper 11, place the fly maggots in the hopper 11, and then fix the covers; put the hopper 11 of the device in a floating ring whose inner diameter is larger than the outer diameter of the hopper 11, so that the hopper 11 is located directly above the living area of ​​the shrimp, and the lower part of the device is immersed in water to a depth of 50-100 cm; start the water pump 13 to feed the fly maggots;

[0087] S2, reciprocating steps:

[0088] The crossbar of the U-shaped frame 18 is guided by the limit slot 17 and cooperates with the sliding of the guide rods 22 at both ends in the cam slots 20 on the outer periphery of the rotating drum 19 to convert the rotational motion of the rotating drum 19 into a stable up and down reciprocating motion, driving the lifting rod 29 and the U-shaped frame 18 to reciprocate up and down together;

[0089] The outer surface of the rotating drum 19 is provided with a cam groove 20, which forms a continuous closed curve shape; the guide rods 22 at both ends of the U-shaped frame 18 are installed in the cam groove 20 through rolling bearings; the crossbar of the U-shaped frame 18 passes through the limit groove 17 on the cylinder body 16; double-row angular contact ball bearings 23 are installed at both ends of the rotating drum 19, and nitrile rubber sealing rings 24 are arranged on the outer side of the bearings 23 to ensure stability and sealing during rotation;

[0090] S3, material distribution control steps:

[0091] The lifting rod 29 drives the arc plate 36 and the extension plate to reciprocate up and down. The arc plate 36 and the extension plate move up and down in the third butterfly plate 39, driving the third butterfly plate 39 to rotate within the range of 0-90 degrees, realizing the opening and closing of the opening and closing unit, and completing the unloading of fly maggots;

[0092] A first butterfly plate 37 and a second butterfly plate 38 are fixedly installed at the bottom of the partition 35, so that the two butterfly plates are overlapped and form a fixed opening; a third butterfly plate 39 is installed between the first butterfly plate 37 and the second butterfly plate 38; an arc plate 36 is fixedly installed on the periphery of the lifting rod 29, and the upper and lower ends of the arc plate 36 are respectively vertically extended to form a 90-degree extension plate, and the length of the extension plate matches the width of the third butterfly plate 39; when the lifting rod 29 moves upward, the arc plate 36 and the lower end extension plate contact the third butterfly plate 39 and drive it to rotate 90 degrees, forming a quarter fan-shaped opening between the first butterfly plate 37 and the second butterfly plate 38, so that the bait falls; the extension plate maintains vertical contact with the third butterfly plate 39 to prevent the third butterfly plate 39 from generating additional rotation;

[0093] S4, push delivery steps:

[0094] The working process of the push unit is divided into two stages: filling and pushing:

[0095] S41, filling stage: the upper piston 32 and the middle piston 31 are tightly attached and located above the piston cylinder 33, and the lower piston 30 is located at the bottom of the piston cylinder 33 to form a seal; at this time, the bait falls into the piston cylinder 33 through the opening and closing unit;

[0096] S42, pushing stage: the upper piston 32 and the lower piston 30 move downward synchronously under the drive of the lifting rod 29, and the middle piston 31 is fixed to the inner wall of the piston cylinder 33 by the buckle component to form a new sealing point;

[0097] S421, when the lock rod 43 enters the U-shaped groove 44, the return spring 42 pushes the lock rod 43 to contact the inclined surface of the push rod 46; through the lever action of the balance rod 48, the roller 49 extends into the piston cylinder 33;

[0098] S422, when the lower piston 30 moves upward and touches the roller 49, the push rod 46 is pushed in the opposite direction through the balance rod 48; the lock rod 43 is compressed by the push rod 46 and exits the U-shaped groove 44, releasing the middle piston 31;

[0099] At least one piston is always kept in contact with the cylinder wall in the piston cylinder 33 to form a sealing structure to prevent water from flowing back;

[0100] S43, bait output step:

[0101] The water pump 13 pumps the water flow into the mixing chamber 26 through the outlet 28, and the middle piston 31 pushes the maggots and air from the inside of the piston cylinder 33 into the mixing chamber 26 to mix with the water flow. After mixing, the maggots enter the annular groove 25 through the outlet 28 and are finally discharged to the outside through the inclined hole 21; the discharged air and water flow mix to generate bubbles that lift the maggots to form a floating state, so that the maggots show the dynamic characteristics of a living body.

[0102] The present invention illustrates the technical concept of the present invention through the above embodiments, but the present invention is not limited to the above embodiments, that is, it does not mean that the present invention must rely on the above embodiments to be implemented. Those skilled in the art should understand that the relevant improvements to the present invention fall within the protection scope and disclosure scope of the present invention.

Claims

1. A feed delivery device for fishery breeding, comprising a feed distribution component, a feed feeding component and a storage component installed on a floating ring, wherein the storage component is used to store bait, and is characterized in that: The bottom end of the material storage component is connected to the top of the material distribution component, and the feeding component is installed at the bottom of the material distribution component. The material storage component includes a hopper (11), and a water pump (13) is installed on the top of the hopper (11). The water inlet end of the water pump (13) extends to the bottom end of the material distribution component through a pipeline and then communicates with the outside, and the water outlet end of the water pump (13) is connected to the inner cavity of the material distribution component through a pipeline; The material distribution component comprises a cylinder (16), the bottom of the cylinder (16) is sealed, a lifting rod (29) is installed inside the cylinder (16), an opening and closing unit is arranged on the upper part of the lifting rod (29), the opening and closing unit controls the hopper (11) to intermittently release bait, a pushing unit is arranged at the bottom of the lifting rod (29), the pushing unit transfers the bait inside the cylinder (16) to the feeding component through the outlet (28), and during the process of transferring the bait, the pushing unit discharges the air inside the cylinder (16) and prevents water from flowing back; The feeding assembly comprises a rotating drum (19) and a lifting unit. The rotating drum (19) is rotatably mounted at the bottom of the cylinder (16). An annular groove (25) is provided on the rotating drum (19). The annular groove (25) is communicated with an outlet (28) of the pushing unit. A plurality of inclined holes (21) are provided on the annular groove (25). The inclined holes (21) connect the annular groove (25) with the outside. The openings of the inclined holes (21) are arranged along the tangent direction of the rotating drum (19). The lifting unit comprises a U-shaped frame (18). The U-shaped frame (18) is fixedly connected to the lifting rod (29). The rotating drum (19) rotates under the reverse thrust of the water flow generated by the water pump (13), driving the U-shaped frame (18) and the lifting rod (29) to move up and down together, so that the pushing unit sends the bait and air inside the hopper (11) to the outside of the rotating drum (19), generating bubbles to make the bait float.

2. The feed delivery device for fishery breeding according to claim 1, characterized in that: A partition (35) is arranged at the upper part of the cylinder (16) to divide the interior into two downward passages, a limiting groove (17) is arranged inside the partition (35) along the axial direction of the cylinder, a center cylinder (34) is arranged in the middle part of the partition (35) along the axial direction, and the center cylinder (34) is connected to the interior of the limiting groove (17); an inner cylinder (40) is fixedly arranged in the bottom cavity of the cylinder (16), the inner cylinder (40) has a piston cylinder (33), and an inclined surface is arranged on the top of the inner cylinder (40); an outlet (28) and an inlet (27) are respectively arranged on the side walls of the mixing chamber (26) below the inner cylinder (40), and the inlet (27) is connected to the water outlet of the water pump (13).

3. The fishery feed delivery device according to claim 2, characterized in that: The lifting unit further comprises a cam groove (20), the cam groove (20) being arranged on the outer circumference of the rotating drum (19), the cam groove (20) being a continuously closed curved groove, guide rods (22) being arranged at both ends of the U-shaped frame (18), the ends of the two guide rods (22) being away from the U-shaped rods being slidably mounted inside the cam groove (20), and the cross bar of the U-shaped frame (18) being slidably arranged inside the limiting through groove (17).

4. The feed delivery device for fishery breeding according to claim 2, characterized in that: The pushing unit comprises a lower piston (30), a middle piston (31) and an upper piston (32) installed in a piston cylinder (33); the lower piston (30) is fixedly installed at the bottom end of a lifting rod (29); the middle piston (31) is slidably sleeved on the lifting rod (29); the upper piston (32) is fixedly installed on the lifting rod (29); and the upper piston (32) is located above the middle piston (31); a tension spring (51) is installed between the bottom end of the upper piston (32) and the top end of the middle piston (31); and a snap-fit ​​component is arranged between the middle piston (31) and the inner cylinder (40).

5. The fishery feed delivery device according to claim 4, characterized in that: The buckle component comprises a slide groove (41), a return spring (42), a locking rod (43), a U-shaped groove (44), a boss (45), a push rod (46), a first connecting rod (47), a balance rod (48), a roller (49), a second connecting rod (50) and a pin shaft. The side wall of the middle piston (31) is provided with a slide groove (41), and the inner wall of the inner cylinder (40) is provided with a U-shaped groove (44). The two ends of the U-shaped groove (44) are spaced apart along the axial direction of the cylinder body (16). The upper end opening of the U-shaped groove (44) is arranged opposite to the slide groove (41), and the inner wall of the lower end opening of the U-shaped groove is provided with a U-shaped groove (44). A boss (45) is arranged at the top of the U-shaped groove (44); a push rod (46) is slidably arranged in the upper opening of the U-shaped groove (44); a roller (49) is arranged in the lower opening of the U-shaped groove (44); a balance rod (48) is installed in the vertical section of the U-shaped groove (44) through a pin shaft; the top of the balance rod (48) is hinged to the push rod (46) through a first connecting rod (47); the bottom of the balance rod (48) is hinged to the roller (49) through a second connecting rod (50); a return spring (42) and a locking rod (43) are installed inside the slide groove (41); the locking rod (43) slides against the inner wall of the inner cylinder (40).

6. The fishery feed delivery device according to claim 2, characterized in that: The opening and closing unit comprises a first butterfly plate (37), a second butterfly plate (38), a third butterfly plate (39) and an arc plate (36); the first butterfly plate (37) and the second butterfly plate (38) are arranged in an overlapping manner and are both fixedly mounted on the top of the partition (35); the third butterfly plate (39) is slidably mounted between the first butterfly plate (37) and the second butterfly plate (38); and the third butterfly plate (39) is arranged vertically between the upper and lower butterfly plates; the arc plate (36) is fixedly mounted on the lifting rod (29); and extension plates are respectively arranged at the upper and lower ends of the arc plate (36); and the extension plates It is a rectangular parallelepiped structure, and the upper and lower extension plates are arranged perpendicular to each other; the first butterfly plate (37) and the second butterfly plate (38) are provided with circular holes in the middle, and the circular holes are used to accommodate the rotation of the arc plate (36) and the extension plate; the third butterfly plate (39) is provided with a flat hole in the middle, and a small circular hole is further provided in the middle of the flat hole to accommodate the up and down movement of the lifting rod (29), the arc plate (36) and the extension plate. When the lifting rod (29) moves up and down, the third butterfly plate (39) is driven to rotate, and an opening or closing switch is formed between the third butterfly plate (39) and the upper and lower butterfly plates.

7. The feed delivery device for fishery breeding according to claim 1, characterized in that: The upper and lower parts of the rotating drum (19) are both equipped with bearings (23) and sealing rings (24), and the two bearings (23) are both located outside the sealing rings (24).

8. The feed delivery device for fishery breeding according to claim 1, characterized in that: A support plate (12) is fixedly mounted at the middle of the top of the hopper (11), the water pump (13) is fixedly mounted on the support plate (12), and cover plates are respectively mounted on both sides of the support plate (12).

9. The feed delivery device for fishery breeding according to claim 1, characterized in that: A water inlet pipeline (14) and a water outlet pipeline (15) are provided in the direction from the hopper (11) to the cylinder (16), and the water inlet pipeline (14) and the water outlet pipeline (15) are both transported through holes opened in the inner walls of the hopper (11) and the cylinder (16).

10. A method for feeding feed using the device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Storage material preparation steps: Open the covers on both sides of the hopper (11), place the bait in the hopper (11), and then fix the covers; put the hopper (11) of the device in a floating ring whose inner diameter is larger than the outer diameter of the hopper (11), so that the hopper (11) is located directly above the living area of ​​the shrimp, and the lower part of the device is immersed in water to a depth of 50-100 cm; start the water pump (13) to feed the bait; S2, reciprocating steps: The crossbar of the U-shaped frame (18) is guided by the limit slot (17) and cooperates with the guide rods (22) at both ends to slide in the cam slots (20) on the outer periphery of the rotating drum (19), so as to convert the rotational motion of the rotating drum (19) into up and down reciprocating motion, thereby driving the U-shaped frame (18) and the lifting rod (29) to reciprocate up and down together; A cam groove (20) is provided on the outer surface of the rotating drum (19), and the cam groove (20) forms a continuous closed curve shape; guide rods (22) at both ends of the U-shaped frame (18) are installed in the cam groove (20) through rolling bearings; the crossbar of the U-shaped frame (18) passes through the limit groove (17) on the cylinder body (16); bearings (23) are installed at both ends of the rotating drum (19), and sealing rings (24) are arranged outside the bearings (23) to ensure stability and sealing during rotation; S3, material distribution control steps: The lifting rod (29) drives the arc plate (36) and the extension plate to reciprocate up and down, and the arc plate (36) and the extension plate move up and down in the third butterfly plate (39), driving the third butterfly plate (39) to rotate within the range of 0-90 degrees, thereby realizing the opening and closing of the opening and closing unit and completing the lowering of the bait; A first butterfly plate (37) and a second butterfly plate (38) are fixedly installed at the bottom of the partition (35) so that the two butterfly plates overlap and form a fixed opening; a third butterfly plate (39) is installed between the first butterfly plate (37) and the second butterfly plate (38); an arc plate (36) is fixedly installed on the periphery of the lifting rod (29), and two vertical extension plates are respectively extended from the upper and lower ends of the arc plate (36), and the length of the extension plate matches the width of the third butterfly plate (39); when the lifting rod (29) moves upward, the arc plate (36) and the lower end extension plate contact the third butterfly plate (39) and drive it to rotate, forming a fan-shaped opening between the first butterfly plate (37) and the second butterfly plate (38), so that the bait falls; the extension plate maintains vertical contact with the third butterfly plate (39) to prevent the third butterfly plate (39) from generating additional rotation; S4, push delivery steps: The working process of the push unit is divided into two stages: filling and pushing: S41, filling stage: the upper piston (32) and the middle piston (31) are tightly attached and located above the piston cylinder (33), and the lower piston (30) is located at the bottom of the piston cylinder (33) to form a seal; at this time, the bait falls into the piston cylinder (33) through the opening and closing unit; S42, pushing stage: the upper piston (32) and the lower piston (30) move downward synchronously under the drive of the lifting rod (29), and the middle piston (31) is fixed to the inner wall of the piston cylinder (33) by the snap-fit ​​component to form a new sealing point; S421, when the locking rod (43) enters the U-shaped groove (44) to form a locking and fixing state, the return spring (42) pushes the locking rod (43) to contact the push rod (46); through the lever action of the balance rod (48), the roller (49) extends into the piston cylinder (33); S422, when the fixed connection between the locking rod (43) and the U-shaped groove (44) is released, the lower piston (30) moves upward and touches the roller (49), and the push rod (46) is pushed in the opposite direction through the balance rod (48); the locking rod (43) is compressed by the push rod (46) and withdraws from the U-shaped groove (44), releasing the middle piston (31); at least one piston in the piston cylinder (33) is always kept in contact with the cylinder wall, forming a sealing structure to prevent water from flowing back; S43, bait output step: The water pump (13) pumps water into the mixing chamber 26 through the outlet (28), and the middle piston (31) pushes the fly maggots and air from the inside of the piston cylinder (33) into the mixing chamber (26) to mix with the water. After mixing, the maggots enter the annular groove (25) through the outlet (28) and are finally discharged to the outside through the inclined hole (21); the discharged air and water mix to generate bubbles that lift the bait to form a floating state, so that the bait presents the dynamic characteristics of a living body.

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