CN111587827A

CN111587827A - Self-floating fry rearing box

Info

Publication number: CN111587827A
Application number: CN202010413658.0A
Authority: CN
Inventors: 王振吉; 王国杰; 张保太; 祁得林
Original assignee: QINGHAI FISHERY ENVIRONMENTAL MONITORING STATION
Current assignee: QINGHAI FISHERY ENVIRONMENTAL MONITORING STATION
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2020-08-28

Abstract

The invention discloses a self-floating fry rearing box which comprises a box body, wherein the box body is of a cylindrical structure with an opening at the top, and a buoyancy system is arranged on the circumference of the outer side of the top of the box body; the box body is of a mesh-shaped structure, a plurality of water baffles are arranged on the outer side wall of the box body, and the included angle between each water baffle and the box body in the vertical direction is the same; the top of the buoyancy system is provided with a mounting plate, and the area of the mounting plate is less than or equal to half of the cross sectional area of the top of the buoyancy system; the mounting plate is provided with an automatic bait casting device; the bottom of the box body can be detachably connected with a collecting box. The self-floating fry rearing box can simultaneously achieve the functions of floating, penetrating and automatic rotation. Meanwhile, automatic bait feeding can be realized, and the using effect in the cultivation of the salmon and trout floating fries is obvious; in addition, the residual bait and excrement generated in the fry breeding process can be treated in a centralized manner, so that the fry breeding device is convenient to clean and does not influence water quality.

Description

Self-floating fry rearing box

Technical Field

The invention relates to the technical field of fry rearing, in particular to a self-floating fry rearing box.

Background

The Qinghai province becomes the most important salmon and trout cage culture base in China, with the continuous increase of culture scale, the yield is continuously improved (accounting for more than 30% of China), the demand for the eye-catching eggs of the triploid rainbow trout is increased more and more every year (reaching 1000 ten thousand eggs in 2019), and the method is totally imported at present, so that the method has great potential influence on the development and biological safety of the salmon and trout culture industry in our province. In order to reduce the degree of import dependence to the maximum extent, improve the self-supply rate of the triploid eggs of the domestic salmon and trout, and develop the rainbow trout polyploidy seed production and breeding test.

In traditional fry rearing process, salmon trout floating fry swims in the fry rearing jar occasionally because the physique is relatively weak in earlier stage, occasionally can sting and lodge in rearing jar bottom, remains bait with the residue and mixes together easily, and the operation is more troublesome when clearing up the residue and remaining bait, causes the fry to be injured easily.

In addition, the existing salmon and trout floating fries are mostly fed by artificial untimely feeding in the breeding process, automatic feeding is not realized, on one hand, a large amount of labor force is consumed, and on the other hand, if the feeding is not timely, the growth of the salmon and trout is influenced.

Disclosure of Invention

Aiming at the problems, the invention aims to provide the fry rearing box with self-floating property, self-rotation property and permeability, and the fry rearing box also has an automatic bait throwing function, can collect residual baits and is convenient to clean.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

the utility model provides a from floating formula fry artificial containers, includes the box, its characterized in that: the box body is of a cylindrical structure with an opening at the top, and a buoyancy system is arranged on the circumference of the outer side of the top of the box body; the box is of a mesh structure, a plurality of water baffles are arranged on the outer side wall of the box, and included angles of the water baffles in the vertical direction of the box are the same.

Furthermore, a mounting plate is arranged at the top of the buoyancy system, and the area of the mounting plate is less than or equal to half of the cross section area of the top of the buoyancy system; the mounting plate is provided with an automatic bait casting device.

Furthermore, the automatic bait casting device comprises a power box and a bait casting box, wherein a motor and a lead screw are installed in the power box, one end of the lead screw is connected with the output end of the motor, and the other end of the lead screw is rotatably connected with the inner side wall of the power box;

the screw rod is sleeved with a nut matched with the screw rod, the bottom of the nut is fixedly connected with a vertical rod, one side of the vertical rod, close to the motor, is connected with a telescopic rod, one end of the telescopic rod is connected with the vertical rod, and the other end of the telescopic rod is installed on the inner side wall of the power box;

a push rod is fixedly connected to one side, far away from the motor, of the vertical rod, the push rod penetrates through the power box and the bait casting box and extends into the bait casting box, a feed casting device is fixedly connected to the end portion of the push rod, and the feed casting device is located in the bait casting box;

a battery is also arranged in the power box and provides power for the motor; the lateral wall of the power box is provided with a controller and a timer, and the controller is electrically connected with the motor and the timer respectively.

Furthermore, a conical feed inlet is formed in the top of the bait casting box, a boss is formed in the bottom of the bait casting box, the feed casting device is located on the boss and comprises a left baffle, a right baffle, a front baffle, a rear baffle and a bottom baffle, the left baffle, the right baffle, the front baffle and the rear baffle which are adjacent to each other are fixedly connected, the left side of the bottom baffle is movably connected with the bottom of the left baffle, the right side of the bottom baffle is in contact with the right baffle but not connected with the right baffle, and the push rod is fixedly connected with the left baffle;

a slope-shaped opening is formed in the position, close to the right side, of the boss, a discharge hole is formed in the bottom of the bait casting box, and the slope-shaped opening is communicated with the discharge hole; and the mounting plate is provided with a feeding opening corresponding to the discharge opening.

Further, the bottom baffle is of an arc-shaped structure, and the arc-shaped structure can be attached to the slope-shaped opening.

Furthermore, the telescopic rod comprises a first cylinder, one end of the first cylinder is provided with a second cylinder in an inserting manner, and one end of the second cylinder, which is positioned inside the first cylinder, is fixedly connected with a first limiting ring;

the other end of the second barrel is provided with a cross rod in an inserting mode, and the cross rod is located at one end, inside the second barrel, of the second barrel and is fixedly connected with a second limiting ring.

Furthermore, the bottom of the box body is detachably connected with a collecting box.

Furthermore, a conical guide cylinder is fixedly connected to the bottom of the box body, a guide cavity is enclosed by the guide cylinder and the bottom of the box body, and the bottom of the guide cylinder is of an opening structure;

the opening is fixedly connected with a connecting cylinder, and the collecting box is detachably connected with the connecting cylinder; the flow guide cavity, the connecting cylinder and the collecting box are communicated with each other.

Furthermore, a circle of outer edge is arranged on the circumference of the outer side of the bottom of the connecting cylinder, and the outer diameter of the outer edge is the same as that of the collecting box;

two first mounting grooves are symmetrically formed in the outer edge close to the edge, butterfly bolts are connected in the first mounting grooves in a threaded mode, limiting balls are fixedly connected to the bottoms of the butterfly bolts, and the diameters of the limiting balls are smaller than those of the butterfly bolts;

collect on the box wall of box be equipped with two with the corresponding second mounting groove of first mounting groove, every two springs, every are installed to the symmetry on the inside wall of second mounting groove the free end of spring is connected with the limiting plate, the up end of limiting plate, lower terminal surface with the limiting plate is kept away from a side of spring is the radius angle and connects, just the lower terminal surface of limiting plate with the distance of second mounting groove bottom with the diameter of spacing ball is the same.

Furthermore, the box body is made of a dense-hole aluminum plate.

The invention has the beneficial effects that: compared with the prior art, the invention has the improvement that,

1. the self-floating type fry rearing box disclosed by the invention can float in the rearing tank, the collecting box is arranged at the bottom of the box body, residual baits and excrement generated in the fry rearing process can be collected in a centralized manner, the collecting box is detachably connected, the residual baits and the excrement in the collecting box can be cleaned conveniently, the cleaning process is more convenient, the fry cannot be injured, and the water quality in the rearing tank cannot be influenced.

2. The self-floating fry rearing box adopts the dense-hole aluminum plate, has good permeability, improves the water flow exchange rate in the rearing box, and can ensure that residual baits and excrement can fall into the collecting box at the bottom.

3. The self-floating type fry rearing box adopts a cylindrical structure, can automatically rotate along with water flow by arranging the water baffle, freely rotates and moves in a 360-degree dead angle-free manner, promotes water body exchange and sedimentation of residual baits in residues, and achieves the purposes of heterotopic cultivation and partition cleaning.

4. The top of the self-floating type fry rearing box is provided with the automatic bait casting device, and the timer is provided with the timing bait casting device, so that compared with manual bait casting, the self-floating type fry rearing box saves time and labor, and can more accurately control the bait casting time and bait casting amount.

Drawings

Fig. 1 is a schematic structural view of the self-floating fry rearing box of the present invention.

Fig. 2 is a schematic structural view of the automatic bait casting device of the invention.

Fig. 3 is a schematic structural diagram of the feeding box of the invention during feeding.

Fig. 4 is a top view of the inner structure of the bait casting box of the invention.

Fig. 5 is a schematic view of the telescopic rod structure of the present invention.

FIG. 6 is a top view of the case structure of the present invention.

FIG. 7 is a schematic view showing the connection between the collecting box and the bottom of the box body according to the present invention.

FIG. 8 is a schematic view of the connection cartridge and the collection cassette of the present invention in positional relationship.

FIG. 9 is an enlarged view of a portion A of FIG. 8 according to the present invention.

FIG. 10 is a schematic diagram of a stopper structure according to the present invention.

Wherein: 1-box body, 2-buoyancy system, 3-water baffle, 4-collection box, 41-second installation groove, 42-spring, 43-limit plate, 5-guide cylinder, 51-guide cavity, 6-connecting cylinder, 61-outer edge, 62-first installation groove, 63-butterfly bolt, 7-installation plate, 8-power box, 81-motor, 82-lead screw, 83-nut, 84-vertical rod, 85-telescopic rod, 851-first cylinder, 852-second cylinder, 853-first limit ring, 854-cross rod, 855-second limit ring, 86-push rod, 87-battery, 9-bait casting box, 91-feed inlet, 92-boss, 921-left baffle, 922-right baffle, 923-front baffle, 924-rear baffle, 925-bottom baffle, 93-slope opening, 94-discharge port, 100-controller and 200-timer.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following further describes the technical solution of the present invention with reference to the drawings and the embodiments.

Referring to the attached drawings 1-10, the self-floating fry rearing box comprises a box body 1, wherein the box body 1 is of a cylindrical structure with an open top, and the box body 1 is made of a dense-hole aluminum plate; guaranteed the inside and outside permeability of self-floating fry incubator on the one hand, improved the rivers exchange rate, can make the residue that produces in the box 1 simultaneously remain bait and excrement and urine and fall out box 1, convenient clearance can not hurt the fry when the residue remains bait and excrement and urine in the clearance, and on the other hand can prevent that box 1 from being in the aquatic for a long time and can not rust.

Furthermore, a buoyancy system 2 is arranged on the circumference of the outer side of the top of the box body 1, the top and the bottom of the buoyancy system 2 are both of an open structure, the buoyancy system 2 has a certain width, the opening of the bottom of the buoyancy system 2 is a PE plate with the same size as the opening of the top of the box body 1, the inner diameter of the buoyancy system 2 is 1000mm, the outer edge width of the buoyancy system is 100mm, and the outer edge height of the buoyancy system is 100mm, and a buoyancy material is filled in the PE plate, so that the buoyancy requirement can be met, and water quality cannot be polluted; the box body 1 is a dense-hole aluminum plate with the diameter of 1000mm, the height of 305mm and the thickness of 2mm, and micropores with the diameter of 1.8mm are densely distributed on the dense-hole aluminum plate

Furthermore, a plurality of water baffles 3 are arranged on the outer side wall of the box body 1, and included angles between each water baffle 3 and the box body 1 in the vertical direction are the same, preferably 45 degrees. Place box 1 in fry rearing jar, buoyancy system 2 guarantees that box 1 is in the showy state, and breakwater 3 can make fry rearing case get up along with rivers autogiration, has promoted the subsides of water exchange and the surplus bait of residue, and box 1 structure is cylindrical structure simultaneously, can make fry rearing case 360 degrees free rotation at dead angles remove in fry rearing jar, reaches the purpose that the dystopy was cultivated, the subregion was cleared up. Simultaneously, can place a plurality of fry artificial containers simultaneously in same cultivation jar, cultivate the fry of different varieties or different test sample, solve the not enough problem of fry artificial containers, improve the utilization ratio of fry artificial containers. The water baffle 3 is a PE (polyethylene) water baffle with the height of 300mm, the width of 200mm and the thickness of 5mm, and is preferably 8. The box body 1 and the water baffle 3 are made of food-grade PE plates, so that the box is suitable for long-term soaking, convenient to connect and clean, and has no adverse effect on fish culture and water quality.

Furthermore, an installation plate 7 is arranged at the top of the buoyancy system 2, the area of the installation plate 7 is less than or equal to half of the cross section area of the top of the buoyancy system 2, so that illumination required in the fry breeding process is not influenced, and the putting and fishing of the fry are not influenced; the mounting panel 7 can be located the central point of buoyancy system 2 puts, guarantees the balance of whole fry artificial containers, install automatic feeding device on the mounting panel 7.

Specifically, the automatic bait casting device comprises a power box 8 and a bait casting box 9, a motor 81 and a lead screw 82 are installed in the power box 8, the motor 81 is a forward and reverse rotating motor, one end of the lead screw 82 is connected with the output end of the motor 81 through a coupler, the other end of the lead screw 82 is rotatably connected with the inner side wall of the power box 8, a bearing is arranged at the tail cone position of the power box 8 corresponding to the lead screw 82, and the lead screw 82 is rotatably connected with the bearing; the screw rod 82 is sleeved with a nut 83 matched with the screw rod, and the motor 81 drives the nut 83 on the screw rod 82 to move left and right when rotating.

Further, the bottom welded fastening of nut 83 has montant 84, montant 84 is close to one side of motor 81 is connected with telescopic link 85, the one end of telescopic link 85 with montant 84 is connected, the other end of telescopic link 85 is installed on the inside wall of headstock 8, telescopic link 85 is located the below of motor 81, nut 83 moves when moving about and drives montant 84 moves about, and telescopic link 85 also stretches out and draws back thereupon, and telescopic link 85 can play support and stabilizing action to montant 84, because telescopic link 85 installs on the inside wall of headstock 8, and telescopic link 85 can only stretch out and draw back in the left-right direction, consequently, can effectually prevent that montant 84 from taking place to rock or slight rotation at the in-process that removes.

Further, a push rod 86 is fixedly welded on one side of the vertical rod 84, which is far away from the motor 81, the push rod 86 penetrates through the power box 8 and the feeding box 9 and extends into the feeding box 9, and the end of the push rod 86 is fixedly connected with a feed feeding device which is positioned in the feeding box 9;

further, a battery mounting box is further arranged in the power box 8, a battery 87 is mounted in the battery mounting box, the battery 87 is electrically connected with the motor 81, and the battery 87 provides power for the motor 81; the power box 8 is provided with heat dissipation holes at positions corresponding to the motor 81, so that heat dissipation of the motor 81 in the operation process is guaranteed. The outer side wall of the power box 8 is provided with a controller 100 and a timer 200, and the controller 100 is electrically connected with the motor 81 and the timer 200 respectively.

Further, the top of box 9 of feeding is equipped with conical feed inlet 91, feed inlet 91 is located box 9 of feeding is close to left position department, box 9's of feeding bottom is equipped with boss 92, the device of feeding is located on the boss 92, the device of feeding includes left baffle 921, right baffle 922, preceding baffle 923, backplate 924 and end baffle 925, in order to alleviate the quality of fry incubator, left baffle 921, right baffle 922, preceding baffle 923, backplate 924 and end baffle 925 all adopt the plastic material of light, left baffle 921 and right baffle 922 and preceding baffle 923 and backplate 924 all bond fixedly, the left side of end baffle 925 with the bottom of left baffle 921 is articulated, the right side of end baffle 925 with right baffle 925 contacts but not throw-in, feed inlet 91 is located left baffle 921, right baffle 922, preceding baffle 923, The push rod 86 is fixed to the left baffle 921 by adhesion directly above the closed space formed by the rear baffle 924 and the bottom baffle 925. Add the bait from feed inlet 91 to the closed space that left baffle 921, right baffle 922, preceding baffle 923, backplate 924 and end baffle 925 formed, push rod 86 promotes left baffle 921 and removes to promote the whole closed space of placing the fodder to move together on boss 92.

Further, a slope-shaped opening 93 is formed in the position, close to the right side, of the boss 92, a discharge hole 94 is formed in the bottom of the bait casting box 9, the slope-shaped opening 93 is communicated with the discharge hole 94, and a feeding hole corresponding to the discharge hole 94 is formed in the mounting plate 7. When the left baffle 921 moves to the edge of the slope-shaped opening 93, the bottom baffle 925 starts to rotate downwards along the slope-shaped opening 93 due to the unsupported action of the boss 92, a gap is formed between the bottom baffle 925 and the right baffle 922, and bait falls from the gap and then falls into the box body 1 from the discharge hole 94 and the feeding hole on the mounting plate 7.

Preferably, the bottom baffle 925 is an arc-shaped structure, the arc-shaped structure can be attached to the slope-shaped opening 93, and when the material is fed, the bottom baffle 925 is completely opened to be attached to the slope-shaped opening 93, so that the feeding speed can be increased.

Further, the telescopic rod 85 comprises a first cylinder 851, a second cylinder 852 is inserted into one end of the first cylinder 851, and a first limit ring 853 is fixedly connected to one end of the second cylinder 852, which is located inside the first cylinder 851; the other end of second barrel 852 alternates and is provided with horizontal pole 854, horizontal pole 854 is located the inside one end fixedly connected with second spacing ring 855 of second barrel 852, the other end of horizontal pole 854 with montant 84 welded fastening.

Further, the bottom of the box body 1 is detachably connected with a collecting box 4.

Specifically, a conical guide cylinder 5 is bonded to the bottom of the box body 1, a guide cavity 51 is defined by the guide cylinder 5 and the bottom of the box body 1, the bottom of the guide cylinder 5 is of an open structure, a connecting cylinder 6 is bonded to the opening, and the collecting box 4 is detachably connected with the connecting cylinder 6; the diversion cavity 51, the connecting cylinder 6 and the collecting box 4 are communicated with each other. Guide cylinder 5 and connecting cylinder 6 are platelike structure, and in order to alleviate the total mass of fry incubator, connecting cylinder 6, collection box 4 also all adopt plastics material. The residue is remained bait and excrement and urine and is entered into through draft tube 5 and connecting cylinder 6 after falling from the mesh of box 1 bottom and collect the box, avoids the residue to remain bait and excrement and urine and falls into to cultivate the jar, and the clearance is inconvenient on the one hand, and on the other hand also can pollute the quality of water in cultivating the jar. Simultaneously, collect box 4 and can dismantle with connecting cylinder 6 and be connected, when collecting that the residue remains bait and excrement and urine in the box 4 more, only need to collect box 4 and dismantle, can clear up, collect box 4 for having the open-top's of certain wall thickness plastic box.

Specifically, the circumference of the outer side of the bottom of the connecting cylinder 6 is provided with a circle of outer edge 61, the connecting cylinder 6 and the outer edge 61 are integrally formed, and the outer diameter of the outer edge 61 is the same as that of the collecting box 4.

Two first mounting grooves 62 are symmetrically arranged on the outer edge 61 close to the edge, a butterfly bolt 63 is connected in the first mounting grooves 62 in a threaded manner, a limiting ball 64 is bonded to the bottom of the butterfly bolt 63, and the diameter of the limiting ball 64 is smaller than that of the butterfly bolt 63;

collect on the box wall of box 4 be equipped with two with the corresponding second mounting groove 41 of first mounting groove 62, every two springs 42, every are installed to the symmetry on the inside wall of second mounting groove 41 the free end of spring 42 is connected with limiting plate 43, the up end of limiting plate 43, lower terminal surface with limiting plate 43 keeps away from a side of spring 42 is the radius angle and connects, just the lower terminal surface of limiting plate 43 with the distance of second mounting groove 41 bottom with spacing ball 64's diameter is the same. Twist butterfly bolt 63, when spacing ball 64 reachd limiting plate 43 top, continue to twist butterfly bolt 63, spring 42 is compressed under the effect of external force, the distance increase between limiting plate 43, spacing ball 64 moves down between limiting plate 43, when spacing ball 64 moves to limiting plate 43 below, just fall into the hole that limiting plate 43 and second mounting groove 41 bottom formed, spring 42 resumes deformation, under the effect that does not have other external forces, limiting plate 43 and second mounting groove 41 are spacing the top and the bottom of spacing ball 64 respectively. When the collecting box 4 needs to be disassembled, the butterfly bolt 63 is reversely screwed, and the limiting ball 64 extrudes the limiting plate 43 and the spring 42, so that the limiting ball 64 can pass through the limiting plate 43, and the disassembling purpose is achieved. The upper end face and the lower end face of the limiting plate 43 are connected with one side face, away from the spring 42, of the limiting plate 43 through a fillet, and the limiting plate 43 and the spring are conveniently extruded by the limiting ball 64 in the up-and-down moving process.

When the self-floating fry rearing box is actually used, the fry rearing box is placed in a rearing tank, the feed is put into the feeding box from the feed inlet of the feeding box, the time of the timer 200 is set, when one time arrives, the controller 200 controls the motor 81 to work, the motor 81 drives the screw rod 82 to rotate, the nut 83 on the screw rod 82 drives the vertical rod 84 to move rightwards, thereby pushing the push rod 86 to move to the right, the push rod 86 pushes the left baffle 921 and the front baffle 923, the rear baffle 924, the right baffle 922 and the bottom baffle 925 to move together to the right on the boss 92, when the left baffle 921 moves to the edge of the slope-shaped opening 93, the bottom baffle 925 starts to rotate downwards along the slope-shaped opening 93 due to the unsupported action of the boss 92, a gap is formed between the bottom baffle 925 and the right baffle 922, and the bait falls from the gap and then falls into the box body 1 from the discharge hole 94 and the feeding hole on the mounting plate 7. Because the motor 81 is a forward and reverse rotating motor, when the motor 81 is forward and reverse, the left baffle 921, the front baffle 923, the rear baffle 924, the right baffle 922 and the bottom baffle 925 are pulled to move leftwards on the boss 92, and after the bottom baffle 925 rotates to the boss 92, a closed space is formed between the bottom baffle 925 and the right baffle 922, and feeding is stopped.

Under the effect of buoyancy system 2, box 1 is located the showy state, carries out the water body exchange with in cultivating the jar, and can rotate freely in cultivating the jar, and the residue that produces in the box 1 remains bait and excrement and urine and falls into draft tube 5 through the mesh structure of box 1 bottom, then enters into collection box 4 through connecting cylinder 6. When the residual bait and the excrement are more in the collecting box, the collecting box 4 is only required to be disassembled to clean, the butterfly bolt 63 is screwed when the collecting box is disassembled, and the limiting plate 43 and the spring 42 are extruded by the limiting ball 64, so that the limiting ball 64 can pass through the limiting plate 43, and the disassembling purpose is achieved. Collect 4 clean-up backs of box, install the bottom at connecting cylinder 6 with collecting box 4 again, specifically do, reverse twist moves butterfly bolt 63, when spacing ball 64 reachd limiting plate 43 top, continue to twist moves butterfly bolt 63, spring 42 is compressed under the effect of external force, the distance increase between limiting plate 43, spacing ball 64 moves down between limiting plate 43, when spacing ball 64 moved to limiting plate 43 below, just fall into the hole that limiting plate 43 and second mounting groove 41 bottom formed, spring 42 resumes deformation, under the effect of not having other external forces, limiting plate 43 and second mounting groove 41 carry on spacingly to the top and the bottom of spacing ball 64 respectively, will collect box 4 and fix the below at connecting cylinder 6.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a from floating formula fry artificial containers, includes box (1), its characterized in that: the box body (1) is of a cylindrical structure with an opening at the top, and a buoyancy system (2) is arranged on the circumference of the outer side of the top of the box body (1); the water-retaining box is characterized in that the box body (1) is of a mesh-shaped structure, a plurality of water-retaining plates (3) are arranged on the outer side wall of the box body (1), and included angles of the water-retaining plates (3) in the vertical direction of the box body (1) are the same.

2. The self-floating fry rearing box according to claim 1, characterized in that: the top of the buoyancy system (2) is provided with a mounting plate (7), and the area of the mounting plate (7) is less than or equal to half of the cross section area of the top of the buoyancy system (2); the mounting plate (7) is provided with an automatic bait casting device.

3. The self-floating fry rearing box according to claim 2, characterized in that: the automatic bait casting device comprises a power box (8) and a bait casting box (9), a motor (81) and a lead screw (82) are installed in the power box (8), one end of the lead screw (82) is connected with the output end of the motor (81), and the other end of the lead screw (82) is rotatably connected with the inner side wall of the power box (8);

a nut (83) matched with the lead screw (82) is sleeved on the lead screw (82), the bottom of the nut (83) is fixedly connected with a vertical rod (84), one side, close to the motor (81), of the vertical rod (84) is connected with a telescopic rod (85), one end of the telescopic rod (85) is connected with the vertical rod (84), and the other end of the telescopic rod (85) is installed on the inner side wall of the power box (8);

a push rod (86) is fixedly connected to one side, far away from the motor (81), of the vertical rod (84), the push rod (86) penetrates through the power box (8) and the bait casting box (9) and extends into the bait casting box (9), a feed feeding device is fixedly connected to the end portion of the push rod (86), and the feed feeding device is located in the bait casting box (9);

a battery (87) is further arranged in the power box (8), and the battery (87) provides power for the motor (81); install controller (100) and timer (200) on the lateral wall of headstock (8), controller (100) respectively with motor (81) and timer (200) electric connection.

4. The self-floating fry rearing box according to claim 3, characterized in that: the top of box of feeding (9) is equipped with conical feed inlet (91), the bottom of box of feeding (9) is equipped with boss (92), the fodder device of throwing something and feeding is located on boss (92), the fodder device of throwing something and feeding includes left baffle (921), right baffle (922), preceding baffle (923), backplate (924) and end baffle (925), equal fixed connection between left baffle (921), right baffle (922), preceding baffle (923) and backplate (924) of mutual adjacent relation, the left side of end baffle (925) with the bottom swing joint of left baffle (921), the right side of end baffle (925) with right baffle (925) contact nevertheless do not connect with, push rod (86) with left baffle (921) fixed connection;

a slope-shaped opening (93) is formed in the position, close to the right side, of the boss (92), a discharge hole (94) is formed in the bottom of the bait casting box (9), and the slope-shaped opening (93) is communicated with the discharge hole (94); and the mounting plate (7) is provided with a feeding opening corresponding to the discharge hole (94).

5. The self-floating fry rearing box according to claim 4, characterized in that: the bottom baffle (925) is of an arc-shaped structure, and the arc-shaped structure can be attached to the slope-shaped opening (93).

6. The self-floating fry rearing box according to claim 5, characterized in that: the telescopic rod (85) comprises a first cylinder (851), one end of the first cylinder (851) is provided with a second cylinder (852) in a penetrating manner, and one end, located inside the first cylinder (851), of the second cylinder (852) is fixedly connected with a first limiting ring (853);

the other end of second barrel (852) alternates and is provided with horizontal pole (854), horizontal pole (854) are located the inside one end fixedly connected with second spacing ring (855) of second barrel (852).

7. The self-floating fry rearing box according to claim 1, characterized in that: the bottom of the box body (1) is detachably connected with a collecting box (4).

8. The self-floating fry rearing box according to claim 7, characterized in that: the bottom of the box body (1) is fixedly connected with a conical guide cylinder (5), the guide cylinder (5) and the bottom of the box body (1) enclose a guide cavity (51), and the bottom of the guide cylinder (5) is of an open structure;

the opening is fixedly connected with a connecting cylinder (6), and the collecting box (4) is detachably connected with the connecting cylinder (6); the flow guide cavity (51), the connecting cylinder (6) and the collecting box (4) are communicated with each other.

9. The self-floating fry rearing box according to claim 8, characterized in that: a circle of outer edge (61) is arranged on the circumference of the outer side of the bottom of the connecting cylinder (6), and the outer diameter of the outer edge (61) is the same as that of the collecting box (4);

two first mounting grooves (62) are symmetrically formed in the outer edge (61) close to the edge, a butterfly bolt (63) is connected to the first mounting grooves (62) in a threaded mode, a limiting ball (64) is fixedly connected to the bottom of the butterfly bolt (63), and the diameter of the limiting ball (64) is smaller than that of the butterfly bolt (63);

collect on the box wall of box (4) be equipped with two with first mounting groove (62) corresponding second mounting groove (41), every two springs (42), every are installed to the symmetry on the inside wall of second mounting groove (41) the free end of spring (42) is connected with limiting plate (43), the up end of limiting plate (43), lower terminal surface with limiting plate (43) are kept away from a side of spring (42) is the radius angle and connects, just the lower terminal surface of limiting plate (43) with the distance of second mounting groove (41) bottom with the diameter of spacing ball (64) is the same.

10. The self-floating fry rearing box according to claim 1, characterized in that: the box body (1) adopts a dense-hole aluminum plate.