CN112741043A

CN112741043A - Fry rearing is with adding material heat preservation device

Info

Publication number: CN112741043A
Application number: CN202011588654.2A
Authority: CN
Inventors: 侯长旺; 宋泽君; 冯江华
Original assignee: Anhui Huangquefan Modern Agricultural Development Co ltd
Current assignee: Anhui Huangquefan Modern Agricultural Development Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-05-04

Abstract

The invention discloses a material adding and heat insulating device for fry cultivation, which comprises a fry cultivation box body, wherein a perspective window is embedded in the front end face of the fry cultivation box body, an electronic display screen is arranged on the perspective window, a fry outlet pipe is further arranged in the center of the bottom face of the fry cultivation box body in a penetrating mode, a first through stop valve is arranged on the fry outlet pipe, a fry throwing disc is connected to one side of the upper end of the fry cultivation box body in a penetrating mode, a mounting frame is fixedly connected to the center of the outer top face of the fry cultivation box body through screws, cylindrical holes are formed in the front side and the rear side of the top face of the mounting frame in a penetrating mode, and a food throwing barrel. The device has reasonable design and stable operation, realizes the scattered feeding of the fry by multi-point feeding when in use, well avoids the phenomena of fry robbing and eating death and uneven feeding, and adopts a water circulation mode to maintain the constant temperature of the device, thereby achieving the purposes of oxygenation and constant temperature and providing certain guarantee for the high-quality cultivation of the fry.

Description

Fry rearing is with adding material heat preservation device

Technical Field

The invention relates to the technical field of fry rearing equipment, in particular to a feeding and heat-insulating device for fry rearing.

Background

The fry breeding method includes the steps of putting hatched fries into a water tank of a constant temperature control workshop, keeping water temperature, salinity and pH value within a certain range, feeding the fries for 10-15 days by using a fluid liquid, then feeding opening baits, feeding the fries for 1-2 months, and breeding the fries for 1-2 months.

Through retrieval, the patent of application number 201510909858.4 discloses a fry rearing device, which comprises a pool body, an isolation ring, a water passing ring, a water pump, a connecting pipe, an annular pipe and an inclined jet pipe; the isolation ring is fixed at the bottom of the tank body, the water passing ring is fixed at the top of the isolation ring and consists of a perforated plate, and the isolation ring and the water passing ring divide the interior of the tank body into a circulating ring cavity and an incubation cavity surrounded by the circulating ring cavity; the water pump is fixed in the circulating cavity, the water outlet of the water pump is connected with the connecting pipe, the circular pipe is arranged along the bottom edge of the hatching cavity, and the connecting pipe penetrates through the isolation ring and is communicated with the circular pipe; the plurality of oblique injection pipes are uniformly arranged on the ring pipe, the axes of the plurality of oblique injection pipes are intersected, and the intersection point of the axes of the plurality of oblique injection pipes is superposed with the central point of the hatching cavity; the water-passing device also comprises a plurality of accommodating barrels and hanging hooks arranged at the tops of the accommodating barrels, and the hanging hooks are clamped at the tops of the water-passing rings; a plurality of buckets that hold evenly arrange in hatching the intracavity, hold and have the clearance between the bucket.

Above-mentioned device can ensure that the mobility of water is dead in order to reduce the fry, and it throws and feeds when the fry is raised and adopt the single-point to feed more and feed when in actual use, extrudees each other when the fry is edible, and it causes the fry to feed easily and eats inequality and death, has influenced the quality that the fry was fed greatly, can't satisfy people's operation requirement, so research a fry is cultivated with adding material heat preservation device is very necessary.

Disclosure of Invention

The invention aims to solve the problems of labor consumption and low efficiency in the prior art, and provides a feeding and heat-insulating device for fry breeding.

In order to achieve the purpose, the invention adopts the following technical scheme:

a feeding and heat-insulating device for fish fry cultivation comprises a fry culturing box body, wherein a perspective window is embedded in the front end face of the fry culturing box body, an electronic display screen is arranged on the perspective window, a fry outlet pipe is further penetrated and arranged in the center of the bottom face of the fry culturing box body, a first opening and closing valve is arranged on the fry outlet pipe, a fry throwing disc is penetrated and connected to one side of the upper end of the fry culturing box body, a mounting frame is fixedly connected to the center of the outer top face of the fry culturing box body through screws, cylindrical holes are respectively penetrated and arranged in the front side and the back side of the top face of the mounting frame, the inner walls of the cylindrical holes in the front end and the back end are respectively fixedly connected with a food throwing barrel and a liquid injection barrel through screws, sealing plugs are fixed through screws on the inner walls of the upper ends of the food throwing barrel and the liquid injection barrel, a food throwing pipe is further penetrated and connected between the bottom side of the food throwing pipe and the outer, one end of the liquid injection pipe, which is far away from the liquid injection barrel, is fixedly provided with a liquid injection nozzle, one side of the outer end of the seedling box body is also provided with a heat exchange box body, a water pumping pipe is connected between one side of the top surface of the heat exchange box body and the outer wall of the upper side of the liquid injection barrel in a penetrating manner, a control valve I and a water pump are installed on the water pumping pipe, a water changing pipe is further connected between the middle part of the top surface of the heat exchange box body and the bottom side of the seedling box body in a penetrating manner, a communicating valve II is installed on the water changing pipe, a separation net is further arranged outside one end of the water changing pipe, the separation net is fixedly connected on the inner side wall of the seedling box body, the other side of the top surface of the heat exchange box body is further connected with a water passing pipe in a penetrating manner, a control valve, still install logical check valve three on the aqueduct, temperature measurement appearance and oxygen content measuring apparatu are installed respectively to the box upper end inner wall both sides of growing seedlings, the play seedling pipe downside still is provided with transports the subassembly, and the box upper end outside of growing seedlings still runs through the bucket and has seted up the oxygenation hole.

Preferably, the transportation subassembly is including transporting the ware body, transports the ware body bottom surface front and back side and has all seted up the mounting groove, and the side inner wall all rotates around in the mounting groove and installs the walking roller, it still has the push handle through the screw rigid coupling to transport ware body one end lateral wall, transports ware body top surface still rigid coupling have the railing, and the railing deviates from and transports the equal rigid coupling of ware body center one end and has the peg.

Preferably, the walking roller is equipped with a plurality of and evenly distributed and is transporting ware body bottom surface front and back side position, and the string post is equipped with many and evenly distributed and goes on transporting ware body outer top surface, and transports four corners of ware body top surface and all is provided with the string post, adjacent two distance between the string post is greater than the diameter of string post.

Preferably, throw seedling dish including carrying the section and putting in the section, and put in the section inner bottom and personally submit the isosceles trapezoid shape setting, carry the section inner bottom and personally submit the rectangle shape setting, and carry section one end rigid coupling and be close to isosceles trapezoid minor face side end face in putting in the section, throw seedling dish by the outer side direction of seedling box inboard slope setting down of growing seedlings.

Preferably, throw the esophagus and annotate the liquid pipe and all be equipped with many, and throw esophagus and annotate liquid pipe one end and all be cyclic annular evenly distributed at seedling raising box body outside and middle part position.

Preferably, sealing rings are fixed at the joint of the water pumping pipe, the water changing pipe, the water passing pipe and the heat exchange box body and the joint of the water changing pipe, the water guiding pipe and the seedling raising box body.

Preferably, the cleaning spray heads are arranged on the inner wall of the hollow ring in a plurality of and uniformly distributed modes, the inner bottom surface of the seedling box body is arranged in a conical mode, and the cleaning spray heads are arranged in a downward inclined mode.

Preferably, the heating plate is provided with a plurality of blocks which are uniformly distributed on the inner bottom surface of the heat exchange box body, and the heating plate is vertically arranged.

Preferably, the output ends of the oxygen content measuring instrument and the temperature measuring instrument are connected to the input end of the electronic display screen.

Preferably, the plurality of oxygenation holes are uniformly distributed on the outer wall of the upper end of the seedling box body.

Compared with the prior art, the invention provides a material adding and heat insulating device for fry breeding, which has the following beneficial effects:

1. the device is reasonable in design and stable in operation, scattered feeding of the fry is realized through multi-point feeding when the device is used, the phenomena of robbery of the fry and death and uneven feeding are well avoided, the temperature of the device is kept constant by adopting a water circulation mode, and therefore the purposes of oxygenation and constant temperature are achieved, and a certain guarantee is provided for high-quality cultivation of the fry;

2. when fish fries are cultivated, the temperature and the oxygen content of water in the fry rearing box body are monitored in real time through the temperature measuring instrument and the oxygen content measuring instrument, when the temperature and the oxygen content are reduced, the water is heated by the heating piece, then the water is pumped into the liquid injection barrel by the water pump and is sprayed out of the liquid injection nozzle through the liquid injection pipe, and the water absorbs certain air in the falling process, so that the purposes of oxygenation and constant temperature are achieved, and the survival rate of the fish fries is well guaranteed;

3. in the early stage of feeding, the sealing plug is opened to pour the liquid into the liquid injection barrel, and at the moment, the liquid overflows from the liquid injection nozzle and falls into the seedling box body under the action of gravity, so that stagnant liquid is put in multiple points;

4. after the fry are cultivated and grown, the first control valve is closed, and the third opening and closing valve is opened, so that water is sprayed out from the cleaning spray head under the action of the water pump, thereby realizing the self-cleaning operation of the fry raising box body, well avoiding the death phenomenon of next cultivated fry caused by the mildew of retentate, and ensuring the quality of the fry raised for many times;

5. after the cultivation is finished, the control valve II is opened to discharge a part of water, then the opening stop valve I is opened to enable the fry to fall into the transfer vessel body, the transfer vessel body is pulled out after the collection is finished, then the plastic net is used for surrounding the transfer vessel body, and the transfer vessel body is pushed to achieve the transfer operation of the fry.

Drawings

Fig. 1 is a schematic front structural view of a feeding and heat-insulating device for fry rearing according to the present invention;

FIG. 2 is a front cross-sectional view of a feeding and heat-insulating device for fry rearing according to the present invention;

FIG. 3 is a top view of the feeding and heat-insulating device for fry rearing according to the present invention;

FIG. 4 is a mounting diagram of a cleaning nozzle on a hollow ring in the feeding and heat-insulating device for fry rearing according to the present invention;

FIG. 5 is a schematic structural diagram of a transfer assembly in the feeding and heat-insulating device for fry rearing according to the present invention;

fig. 6 is a plan view of a railing in the feeding and heat-insulating device for fry rearing according to the present invention;

fig. 7 is a schematic structural diagram of a feeding tray in the feeding and heat-insulating device for fry rearing according to the present invention.

In the figure: the device comprises a seedling raising box body 1, a perspective window 2, a seedling emergence pipe 3, a first through-stop valve 4, a seedling throwing disc 5, a mounting frame 6, a feeding barrel 7, a liquid injection barrel 8, a sealing plug 9, a feeding pipe 10, a feeding funnel 11, a liquid injection pipe 12, a liquid injection nozzle 13, a heat exchange box body 14, a water pumping pipe 15, a first control valve 16, a water pump 17, a water exchange pipe 18, a second through-stop valve 19, a separation net 20, a water through pipe 21, a second control valve 22, a hollow ring 23, a cleaning nozzle 24, a water guide pipe 25, a third through-stop valve 26, a heating plate 27, a temperature measuring instrument 28, an oxygen content measuring instrument 29, a transfer assembly 30, an oxygen increasing hole 31, a conveying section 51, a throwing section 52, a transfer dish body 301, a walking roller 302, a pushing handle 303, a railing 304.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example one

Referring to fig. 1-7, a feeding and heat-insulating device for fish fry cultivation comprises a fry raising box body 1, a perspective window 2 is embedded in the front end surface of the fry raising box body 1, an electronic display screen is installed on the perspective window 2, a fry outlet pipe 3 is also penetratingly arranged at the central position of the bottom surface of the fry raising box body 1, a through valve 4 is installed on the fry outlet pipe 3, a fry throwing disc 5 is penetratingly connected to one side of the upper end of the fry raising box body 1, a mounting frame 6 is fixedly connected to the central position of the outer top surface of the fry raising box body 1 through screws, cylindrical holes are respectively penetratingly arranged at the front side and the rear side of the top surface of the mounting frame 6, a food throwing barrel 7 and a liquid injecting barrel 8 are respectively fixedly connected to the inner walls of the two cylindrical holes at the front end and the rear end through screws, threads are respectively arranged on the inner walls of the upper ends of the food throwing barrel 7 and the liquid injecting barrel 8 and are fixedly provided with, a liquid injection pipe 12 is also communicated and connected between the bottom side of the liquid injection barrel 8 and the outer side of the top surface of the seedling box body 1, one end of the liquid injection pipe 12, which is far away from the liquid injection barrel 8, is fixed with a liquid injection nozzle 13, the feeding pipe 10 and the liquid injection pipe 12 are both arranged obliquely downwards from the center side of the seedling box body 1 to the outer side of the seedling box body 1, so that fluid liquid and feed can be smoothly guided into the seedling box body 1, one side of the outer end of the seedling box body 1 is also provided with a heat exchange box body 14, a water pumping pipe 15 is communicated and connected between one side of the top surface of the heat exchange box body 14 and the outer wall of the upper side of the liquid injection barrel 8, a control valve I16 and a water pump 17 are installed on the water pumping pipe 15, a water change pipe 18 is communicated and connected between the middle of the top surface of the heat exchange box body 14 and the bottom side of the seedling box body 1, install control valve two 22 on the

water service pipe

21, 1 lower extreme inner wall of box of growing seedlings still is fixed with hollow ring 23, hollow ring 23 inner wall is installed and is washd shower nozzle 24, hollow ring 23 top surface is close to 14 one side of heat transfer box and still has through-connected with aqueduct 25, the aqueduct 25 other end passes box of growing seedlings 1 and through-connected on drinking-water pipe 15 lateral wall, still install logical check valve three 26 on the aqueduct 25, temperature measurement appearance 28 and oxygen content measurement appearance 29 are installed respectively to box of growing seedlings 1 upper end inner wall both sides, 3 downside of the pipe of emerging still is provided with transport subassembly 30, the box of growing seedlings 1 upper end outside still passes through the bucket and has seted.

When in use, firstly, the seedling box body 1 is filled with water, then the fish fry is guided into the seedling box body 1 through the seedling throwing disc 5, at the moment, the temperature measuring instrument 28 and the oxygen content measuring instrument 29 monitor the temperature and the oxygen content of the water in the seedling box body 1 in real time, when the temperature and the oxygen content are reduced, the heating sheet 27 heats the water, then the water pump 17 pumps the water into the liquid injection barrel 8 and the water is sprayed out from the liquid injection nozzle 13 through the liquid injection pipe 12, the water absorbs certain air in the falling process, thereby realizing the purposes of oxygenation and constant temperature, after the cultivation is finished, the second control valve 22 is opened to discharge a part of water, then the first opening stop valve 4 is opened to enable the fry to fall into the transfer assembly 30 to be transferred, the third opening stop valve 26 is opened and the first control valve 16 is closed, at the moment, water is sprayed out from the cleaning spray head 24 under the action of the water pump 17, and therefore the self-cleaning operation of the fry rearing box body 1 is achieved.

Example two

As shown in fig. 5 and 6, this embodiment is substantially the same as embodiment 1, and preferably, the transfer assembly 30 includes a transfer dish body 301, mounting grooves have been all opened to the front and back sides of the bottom surface of the transfer dish body 301, the inner wall of the front and back sides in the mounting grooves is all rotated and installed with a walking roller 302, the side wall of one end of the transfer dish body 301 is further fixedly connected with a pushing handle 303 through a screw, the top surface of the transfer dish body 301 is further fixedly connected with a rail 304, and the rail 304 deviates from the center of the transfer dish body 301 and is fixedly connected with a.

Walking roller 302 is equipped with a plurality ofly and evenly distributed is in transporting ware body 301 bottom surface front and back side position, and string post 305 is equipped with many and evenly distributed and goes on transporting the outer top surface of ware body 301, and transports four corners of ware body 301 top surface and all is provided with string post 305, and distance between two adjacent string posts 305 is greater than the diameter of string post 305.

In this embodiment, after accomplishing to cultivate, open two 22 of control valves and partly with the water discharge, then through opening open only valve 4 and make the fry fall into the transportation ware body 301, will transport the ware body 301 and pull out after collecting the completion, then will transport ware body 301 with the plastic net and enclose all around, transport the operation of transporting that ware body 301 realized the fry in the promotion, easy and simple to handle, fine assurance the efficiency and the survival rate that the fry transported.

EXAMPLE III

As shown in fig. 2 and 7, in this embodiment, basically the same as that in embodiment 1, preferably, the seedling throwing tray 5 includes a conveying section 51 and a throwing section 52, an inner bottom of the throwing section 52 is in an isosceles trapezoid shape, an inner bottom of the conveying section 51 is in a rectangular shape, one end of the conveying section 51 is fixedly connected to an end surface of the throwing section 52 close to a short side of the isosceles trapezoid, and the seedling throwing tray 5 is inclined downward from an outer side of the seedling raising box 1 to an inner side of the seedling raising box 1.

In this embodiment, put in 52 inner bottoms of section and be isosceles trapezoid shape setting to the emergence of the phenomenon that drops when avoiding the fry to put in greatly, the fine survival rate when having guaranteed the fry and putting in increases the putting in space of fry.

Example four

As shown in FIGS. 1 to 3, in this embodiment, basically the same as that of embodiment 1, preferably, a plurality of feeding pipes 10 and liquid pouring pipes 12 are provided, and one ends of the feeding pipes 10 and the liquid pouring pipes 12 are uniformly distributed at the outer side and the middle position of the seedling raising box 1 in a ring shape.

In this embodiment, throw edible pipe 10 and annotate the one end of liquid pipe 12 and all be cyclic annular evenly distributed in the box 1 outside of growing seedlings and middle part position to realize that the multiple spot is annotated liquid and throw the material operation, fine avoidance fry snatch the emergence of eating the phenomenon of dying to finish.

EXAMPLE five

As shown in fig. 1 and 2, in this embodiment, basically the same as embodiment 1, sealing rings are preferably fixed at the junctions of the pumping pipe 15, the water change pipe 18 and the water passing pipe 21 with the heat exchange box body 14 and at the junctions of the water change pipe 18 and the water guiding pipe 25 with the seedling raising box body 1.

In this embodiment, sealing rings are fixed at the joints of the water pumping pipe 15, the water changing pipe 18 and the water passing pipe 21 and the heat exchange box body 14 and at the joints of the water changing pipe 18 and the water guiding pipe 25 and the seedling raising box body 1, so that the sealing performance of the device is well ensured.

EXAMPLE six

As shown in fig. 2 and 4, this embodiment is substantially the same as embodiment 1, and preferably, the cleaning nozzle 24 is provided in plurality and uniformly distributed on the inner wall of the hollow ring 23.

The inner bottom surface of the seedling box body 1 is arranged in a conical shape, and the cleaning spray heads 24 are all arranged in a downward inclined mode.

In this embodiment, the cleaning nozzles 24 are provided in plural and inclined downward, so that the water sprayed from the cleaning nozzles 24 can smoothly wash the bottom surface of the seedling box 1.

EXAMPLE seven

As shown in fig. 1, this embodiment is substantially the same as embodiment 1, and preferably, the output terminals of the oxygen content measuring instrument 29 and the temperature measuring instrument 28 are connected to the input terminal of the electronic display screen.

In this embodiment, the output ends of the oxygen content measuring instrument 29 and the temperature measuring instrument 28 are both connected to the input end of the electronic display screen, so as to facilitate real-time observation of the temperature and the oxygen content in the seedling raising box 1.

Example eight

As shown in fig. 1 and 2, this embodiment is substantially the same as embodiment 1, and preferably, the oxygenation holes 29 are provided in plurality and uniformly distributed on the outer wall of the upper end of the seedling box 1, so that the ball can smoothly flow into the seedling box 1.

The heating plate 27 is provided with a plurality of blocks and is uniformly distributed on the bottom surface in the heat exchange box body 14, and the heating plate 27 is vertically arranged, so that the rapid heating of water is realized, and the water changing efficiency of the device is greatly improved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. A material adding and heat insulating device for fry breeding comprises a fry breeding box body (1), wherein a perspective window (2) is embedded in the front end face of the fry breeding box body (1), and an electronic display screen is installed on the perspective window (2), and is characterized in that a fry outlet pipe (3) is further arranged at the center position of the bottom face of the fry breeding box body (1) in a penetrating mode, a first through stop valve (4) is installed on the fry outlet pipe (3), and a fry throwing disc (5) is connected to one side of the upper end of the fry breeding box body (1) in a penetrating mode;

the seedling raising box body (1) is characterized in that a mounting frame (6) is fixedly connected to the center of the outer top surface of the seedling raising box body (1) through screws, cylindrical holes are formed in the front side and the rear side of the top surface of the mounting frame (6) in a penetrating mode, the inner walls of the front end and the rear end of each cylindrical hole are fixedly connected with a feeding barrel (7) and a liquid injection barrel (8) through screws respectively, threads are arranged on the inner walls of the upper ends of the feeding barrel (7) and the liquid injection barrel (8) in a penetrating mode, a sealing plug (9) is fixed through the threads, a feeding pipe (10) is further connected between the bottom side of the feeding barrel (7) and the middle of the top surface of the seedling raising box body (1) in a penetrating mode, a liquid injection nozzle (13) is fixed to one end, away from the liquid injection barrel (8), of the feeding pipe (10), away from the feeding barrel (7), is fixed with a feeding funnel (11), a liquid injection nozzle (12) is, a water pumping pipe (15) is connected between one side of the top surface of the heat exchange box body (14) and the outer wall of the upper side of the liquid injection barrel (8) in a penetrating manner, a control valve I (16) and a water pump (17) are installed on the water pumping pipe (15), a water changing pipe (18) is further connected between the middle of the top surface of the heat exchange box body (14) and the bottom side of the seedling raising box body (1) in a penetrating manner, a through valve II (19) is installed on the water changing pipe (18), a separation net (20) is further arranged on the outer side of one end of the water changing pipe (18), the separation net (20) is fixedly connected to the inner side wall of the seedling raising box body (1), a water passing pipe (21) is further connected to the other side;

seedling box (1) lower extreme inner wall still is fixed with hollow ring (23), and hollow ring (23) inner wall is installed and is washd shower nozzle (24), and hollow ring (23) top surface is close to heat transfer box (14) one side and still has through connection have aqueduct (25), and aqueduct (25) other end passes seedling box (1) and through connection on drinking-water pipe (15) lateral wall, still install logical check valve three (26) on aqueduct (25), the bottom still rigid coupling has heating plate (27) in heat transfer box (14), seedling box (1) upper end inner wall both sides are installed respectively with temperature measuring apparatu (28) and oxygen content measuring apparatu (29), play seedling pipe (3) downside still is provided with transport subassembly (30), and the seedling box (1) upper end outside still runs through the bucket and has seted up oxygenation hole (31).

2. The feeding and heat preserving device for fry rearing according to claim 1, wherein the transfer assembly (30) comprises a transfer dish body (301), mounting grooves are formed in the front side and the rear side of the bottom surface of the transfer dish body (301), the inner walls of the front side and the rear side in the mounting grooves are rotatably provided with walking rollers (302), the side wall of one end of the transfer dish body (301) is further fixedly connected with a pushing handle (303) through screws, the top surface of the transfer dish body (301) is further fixedly connected with a railing (304), and one end of the railing (304) deviating from the center of the transfer dish body (301) is fixedly connected with a hanging column (305).

3. The feeding and heat-insulating device for fry rearing according to claim 2, wherein the plurality of traveling rollers (302) are uniformly distributed at the front and rear positions of the bottom surface of the transfer dish body (301), the plurality of hanging columns (305) are uniformly distributed on the outer top surface of the transfer dish body (301), the hanging columns (305) are arranged at four corners of the top surface of the transfer dish body (301), and the distance between two adjacent hanging columns (305) is greater than the diameter of the hanging columns (305).

4. The feeding and heat-insulating device for fry rearing according to claim 1, characterized in that the fry rearing is with adding material heat-insulating device, the fry rearing tray (5) includes the conveying section (51) and the throwing section (52), and the inner bottom of the throwing section (52) is in the shape of an isosceles trapezoid, the inner bottom of the conveying section (51) is in the shape of a rectangle, and one end of the conveying section (51) is fixedly connected to the side end face of the throwing section (52) close to the short side of the isosceles trapezoid, and the fry rearing tray (5) is arranged by inclining downwards from the outside of the fry rearing box (1) to the inside of the fry box (1).

5. The feeding and heat-insulating device for fry rearing according to claim 1, characterized in that a plurality of feeding pipes (10) and liquid injection pipes (12) are provided, and one ends of the feeding pipes (10) and the liquid injection pipes (12) are uniformly distributed on the outer side and the middle position of the fry rearing box body (1) in an annular shape.

6. The feeding and heat-insulating device for fry rearing according to claim 1, characterized in that sealing rings are fixed at the junctions of the water pumping pipe (15), the water changing pipe (18) and the water passing pipe (21) with the heat exchange box body (14) and the junctions of the water changing pipe (18) and the water conducting pipe (25) with the fry rearing box body (1).

7. The feeding and heat-insulating device for fry rearing according to claim 1, characterized in that the cleaning nozzles (24) are provided in plurality and evenly distributed on the inner wall of the hollow ring (23), the inner bottom surface of the fry rearing case (1) is arranged in a cone shape, and the cleaning nozzles (24) are all arranged in a downward inclined manner.

8. The feeding and heat-insulating device for fry rearing according to claim 1, characterized in that the heating plates (27) are provided with a plurality of blocks and are uniformly distributed on the inner bottom surface of the heat exchange box body (14), and the heating plates (27) are all vertically arranged.

9. The feeding and heat-insulating device for fry rearing according to claim 1, characterized in that the output terminals of the oxygen content measuring instrument (29) and the temperature measuring instrument (28) are connected to the input terminal of an electronic display screen.

10. The feeding and heat-insulating device for fry rearing according to claim 1, characterized in that the plurality of oxygenation holes (29) are uniformly distributed on the outer wall of the upper end of the fry rearing case (1).