CN105265347B - The three-dimensional classification cultivation apparatus of indoor prawn and its breeding technique - Google Patents

Abstract

The present invention provides a kind of three-dimensional classification cultivation apparatus of indoor prawn and its breeding technique.Its breeding technique comprises the following steps, there is provided aquaculture pond and an outer aquaculture pond in one, the interior aquaculture pond and the outer aquaculture pond are formed using food grade plastic plate processing and fabricating；The interior aquaculture pond is suspended in the water body of the outer aquaculture pond, the bottom wall of the interior aquaculture pond is equipped with the first opening for being inlaid with steel wire and the second opening covered by removable cover；Shrimp seedling is launched into the interior aquaculture pond and is grown into rower extensive cultivation, the shrimp seedling after marking slightly is launched into the outer aquaculture pond and carries out forming cultivation；After the prawn of the outer aquaculture pond, which is formed, to be cultivated successfully, receipts shrimp is carried out by dredger or trapping, then shrimp seedling of the interior aquaculture pond mark after thick is gone to the outer aquaculture pond by the described second opening to carry out forming cultivation, the most backward interior aquaculture pond is launched new shrimp seedling and grown into rower extensive cultivation.

Description

Indoor three-dimensional grading culture device for prawns and its culture technology

technical field

The invention relates to the technical field of prawn cultivation, in particular to an indoor three-dimensional grading cultivation device for prawns and a cultivation process thereof.

Background technique

At present, with the increasing pollution of seawater, the diseases of prawn farming are also becoming more and more serious. The shrimp farming industry has begun to adopt indoor closed circulating water shrimp farming technology in order to provide a safer growth environment for shrimp, thereby increasing the breeding density and survival rate.

The mode that often adopts in the factory culture at present is: 1, build cement breeding pond and water inlet and outlet facilities. 2. Build a cement standard rough pool to standardize the seedlings. 3. Transfer the thick seedlings to the breeding pond during graded cultivation. The purpose of this graded culture is to make the shrimp grow up in a safer environment, so as to increase the survival rate in the culture pond, and at the same time increase the number of breeding stubbles in a year through graded culture, and increase the turnover rate of assets. The motivation is right, but it has not been able to be widely promoted. The important problems are: 1. The investment cost of building cement pools to prevent water leakage for a long time is too high. 2. When the shrimp seedlings are raised to a reasonable size in the standard thick pond and transferred to the pond, the stress of environmental changes is severe, which is not conducive to the continued growth of the shrimp seedlings. 3. It is inconvenient to transfer shrimp seedlings from standard coarse ponds to reasonable specifications, and it is difficult to quantify one standard coarse pond to several breeding ponds.

Contents of the invention

The object of the present invention is to overcome the defects of the prior art and provide an indoor three-dimensional grading cultivation device for prawns and a cultivation process thereof which are low in input cost, easy to operate, and can greatly increase the cultivation frequency of prawns.

The present invention is achieved like this:

An indoor three-dimensional grading culture device for prawns, characterized in that, the indoor three-dimensional grading culture device for prawns includes an inner culture pond and an outer culture pond; the inner culture pond and the outer culture pond respectively include a food-grade plastic plate bottom wall, The side wall of the food-grade plastic plate and the upper opening, one end of the side wall of the food-grade plastic plate abuts against the bottom wall of the food-grade plastic plate, and the other end surrounds the upper opening; the inner breeding pool is suspended on the outer In the water body of the culture pond; the bottom wall of the food-grade plastic plate of the inner culture pond is provided with a first opening and a second opening, the first opening is inlaid with a steel wire mesh, and the second opening is covered by a movable cover, so A movable handle is provided on the edge of the upper opening of the inner culture pond, and the movable handle is connected with the movable cover plate through a linkage rod; the indoor three-dimensional grading culture device for prawns also includes a springboard and a buoy; the buoy is adjacent to the inner culture. The edge of the upper opening of the pool is set on the outside, and the two ends of the buoy are conical structures; one end of the springboard is connected to the buoy, and the other end is connected to the edge of the upper opening of the outer culture pond.

As an improvement of the above-mentioned indoor three-dimensional grading culture device for prawns, both the inner culture pond and the outer culture pond are cylindrical structures.

As an improvement of the above-mentioned indoor three-dimensional grading culture device for prawns, the indoor three-dimensional grading culture device for prawns also includes a circulation equipment inlet pipe and a circulation water treatment equipment; the circulation equipment inlet pipe is respectively connected to the inner culture pond and the outer culture pond , and the water inlet pipe of the circulation equipment is provided with an inner culture pond inlet valve and an outer culture pond inlet gate valve; the food-grade plastic plate bottom wall of the outer culture pond is provided with a drainage outlet in the middle, and the circulating water treatment equipment One end is connected to the drainage and sewage outlet, and the other end is connected to the water inlet pipe of the circulation equipment.

As an improvement of the above-mentioned indoor three-dimensional grading culture device for prawns, the indoor three-dimensional grading culture device for prawns also includes a plurality of fixed support rods, and the multiple fixed support rods are respectively connected to the upper opening edge of the inner culture pond and the upper opening edge of the outer culture pond. between.

As an improvement of the above-mentioned indoor three-dimensional grading culture device for prawns, both ends of each fixed support rod are respectively connected to the upper opening edge of the inner culture pond and the upper opening edge of the outer culture pond through a movable hook structure.

As an improvement of the above-mentioned indoor three-dimensional grading culture device for prawns, a first edge reinforcement hoop is provided on the upper opening edge of the inner culture pond, and a second edge reinforcement hoop is arranged on the upper opening edge of the outer culture pond; the indoor three-dimensional classification culture of prawns The device also includes an aeration disk, the second edge reinforcement hoop is a trachea structure, and the aeration disk is connected to the second edge reinforcement hoop.

As an improvement of the above-mentioned indoor three-dimensional grading culture device for prawns, the indoor three-dimensional grading culture device for prawns also includes two automatic bait feeding devices and two air flotation pushing water devices, and the two automatic bait feeding devices are respectively adjacent to the outer edge of the upper opening of the inner culture pond and the outer edge of the upper opening of the outer culture pond; the two air flotation pushing water devices are respectively arranged adjacent to the inner edge of the upper opening of the inner culture pond and the inner edge of the upper opening of the outer culture pond.

An indoor three-dimensional grading culture process for prawns, comprising the steps of providing an inner culture pond and an outer culture pond, wherein the inner culture pond and the outer culture pond are all made of food-grade plastic plates; The culture pond is suspended in the water body of the outer culture pond, and the bottom wall of the inner culture pond is provided with a first opening inlaid with a wire mesh and a second opening covered by a movable cover plate; the shrimp seedlings are put into the inner The breeding pond is carried out standard rough culture, and the shrimp seedling after the standard thick is put into described outer culture pond to carry out cultivation; After the prawn cultivation in described outer culture pond is successfully cultivated, collect shrimp by fishing net or trapping, and then Transfer the roughened shrimp seedlings in the inner culture pond to the outer culture pond through the second opening for grow-out culture, and finally put new shrimp seedlings into the inner culture pond for standardized roughage culture.

As an improvement of the above-mentioned indoor three-dimensional grading cultivation process for prawns, it also includes the following steps, providing a circulating water treatment device, a drainage and sewage outlet is provided in the middle of the bottom wall of the outer culture pond, and one end of the circulating water treatment device is connected to the drainage and sewage The other end is respectively connected to the inner aquaculture pond and the outer aquaculture pond through the water inlet pipe of the circulating equipment, and the water body with dirt is discharged from the drainage and sewage outlet, and after being purified by the circulating water treatment equipment, it is then passed through the The water inlet pipe of the circulation equipment re-enters the inner culture pond and the outer culture pond respectively.

The beneficial effects of the present invention are: an indoor three-dimensional grading culture device for prawns provided by the present invention, which includes the inner culture pond and the outer culture pond, and the inner culture pond is suspended in the outer culture pond. Adopting the method of nesting ponds in such pools, although it seems that the inner culture ponds occupy part of the culture water body of the outer culture ponds, in fact, this hierarchical culture method helps to increase the culture density of the outer culture ponds, which is Because prawns are animals that love to climb and bottom, and the inner culture pond is relatively shallow and floats in the outer culture pond, so the inner culture pond does not occupy the bottom area of the outer culture pond, and will not It affects the bottom resting of prawns, and at the same time, the outer wall of the inner culture pond can be used as a place for prawns to climb, which increases the climbing place of prawns, thereby improving the culture density of the outer culture pond. In addition, adopting this method of nesting ponds within ponds can not only save land use, save water for cultivation and increase the frequency of cultivation, but also because the bottom wall of the food-grade plastic plate of the inner cultivation pond is provided with a first opening inlaid with steel wire mesh, The water bodies in the inner culture pond and the outer culture pond can communicate with each other, and the water environment is close, so that after the thickened shrimp seedlings are transferred from the inner culture pond to the outer culture pond, they can adapt to the surrounding environment more easily. Reduce stress and increase the survival rate of prawns after transfer to the pond. Therefore, the indoor prawn three-dimensional grading culture device can greatly increase the frequency of prawn cultivation, thereby greatly increasing the annual output of prawns. Also, because both the inner breeding pond and the outer breeding pond are designed and processed by food-grade plastic boards, the input cost is low, the operation is light, waterproof and durable, and there is no need to dealkalize the pond, which is environmentally friendly, safe and leak-proof. In addition, the present invention also provides an indoor prawn three-dimensional grading cultivation process based on the above-mentioned indoor prawn three-dimensional grading cultivation device.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic diagram of the overall structure of a preferred embodiment of the indoor three-dimensional grading cultivation device for prawns of the present invention.

Fig. 2 is a schematic diagram of the overall structure from another angle of the indoor three-dimensional grading culture device for prawns shown in Fig. 1 .

Fig. 3 is a block flow diagram of a preferred embodiment of the indoor prawn three-dimensional graded culture process of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in FIG. 1 and FIG. 2 , this embodiment provides an indoor three-dimensional grading culture device 1 for prawns. The indoor three-dimensional grading culture device 1 for prawns comprises an inner culture pond 11, an outer culture pond 12, a circulation equipment inlet pipe 13, two automatic bait feeding devices 14, a plurality of fixed poles 15, an aeration disc 16, two air flotation pushing water Device 17, springboard 18, buoy 19 and circulating water treatment equipment (not shown).

Specifically, the inner breeding pond 11 includes a food-grade plastic plate bottom wall 111, a food-grade plastic plate side wall 112, and an upper opening 113. One end of the food-grade plastic plate side wall 112 is connected to the food-grade plastic plate bottom wall 111. The other end surrounds the upper opening 113, which is similar to the structure of the inner culture pond 11. The outer culture pond 12 includes a food-grade plastic plate bottom wall 121, a food-grade plastic plate side wall 122 and an upper opening 123. One end of the food-grade plastic plate side wall 122 abuts against the food-grade plastic plate bottom wall 121 , and the other end encloses the upper opening 123 . The side walls 112, 122 of the food-grade plastic boards and the bottom walls 111, 121 of the food-grade plastic boards are all designed and processed by polypropylene food-grade plastic boards. Preferably, both the inner culture pond 11 and the outer culture pond 12 are of cylindrical structure. Through such structural design, on the one hand, the use strength of the material can be improved, and the resistance to water pressure of the same cost material can be increased. On the one hand, it helps the water swirl to collect sewage during the breeding process and save energy consumption.

The size of the inner culture pond 11 is much smaller than the size of the outer culture pond 12. In this embodiment, the surface area of the upper opening 113 of the inner culture pond 11 is about the same as that of the outer culture pond 12. 25% of the surface area of the upper opening 123 . The inner culture pond 11 is suspended in the water body of the outer culture pond 12, and the upper opening edge of the inner culture pond (not marked in the figure) and the upper opening edge of the outer culture pond (not marked in the figure) are connected with the Multiple fixed struts 15. Both ends of each of the fixed struts 15 are respectively connected to the upper opening edge of the inner culture pond and the upper opening edge of the outer culture pond through a movable hook structure (not shown). The inner aquaculture pond 11 is fixed in the outer aquaculture pond 12 by the plurality of fixed support rods 15 so as not to float so as not to affect the swirling flow of the water body.

The food-grade plastic bottom wall 111 of the inner breeding pond 11 is provided with a first opening and a second opening, wherein the first opening is inlaid with a steel wire mesh 1111, and the second opening is covered by a movable cover plate 1112, so A movable handle 1113 is provided on the edge of the upper opening of the inner culture pond, and the movable handle 1113 is connected with the movable cover plate 1112 through a linkage rod 1114 . The circulation equipment inlet pipe 13 communicates with the inner culture pond 11 and the outer culture pond 12 respectively, and the circulation equipment inlet pipe 13 is provided with an inner culture pond inlet valve 131 and an outer culture pond inlet valve 132 . The water inlet gate valve 131 of the inner culture pond and the water inlet gate valve 132 of the outer culture pond can control the water flow distribution of the inner culture pond 11 and the outer culture pond 12 respectively, so that the inner culture pond 11 and the outer culture pond The water in the culture pond 12 is both independent and connected.

The buoy 19 is arranged adjacent to the outer edge of the upper opening of the inner culture pond, and the two ends of the buoy 19 are tapered. One end of the springboard 18 is connected to the buoy 19, and the other end is connected to the upper opening edge of the outer culture pond. During the breeding process, the inner culture pond 11 and the outer culture pond 12 are all filled with water, so that the buoy 19 floats on the water surface. During the situation, it can be observed by the springboard 18. At this time, the buoyancy drum 19 has sufficient buoyancy support, and the other end of the springboard 18 is connected to the upper opening edge of the outer culture pond to keep stable and difficult to tilt. In addition, since both ends of the buoy 19 are tapered, the water swirl in the outer culture pond 12 will not be affected. Both the buoy 19 and the springboard 18 can be designed and manufactured by adopting polypropylene food-grade plastic board.

The bottom wall 121 of the food-grade plastic plate of the outer breeding pond 12 is provided with a drain outlet 1211 in the middle. One end of the circulating water treatment equipment is connected to the drainage outlet 1211 , and the other end is connected to the water inlet pipe 13 of the circulating equipment. The two automatic baiting devices 14 are arranged adjacent to the outer edge of the upper opening edge of the inner breeding pond and the outer edge of the upper opening edge of the outer breeding pond respectively, wherein the automatic baiting device 14 adjacent to the outer edge of the upper opening edge of the inner breeding pond is arranged on the buoy 19, it is used to automatically throw bait into the inner breeding pond 11 according to the preset time and amount; The bait is automatically thrown into the outer culture pond 12. The two air flotation pushing water devices 17 are arranged adjacent to the inside edge of the upper opening edge of the inner culture pond and the inner edge of the upper opening edge of the outer culture pond respectively, wherein the air flotation pushing water device 17 adjacent to the inner edge of the upper opening edge of the inner culture pond, That is to say, after the automatic baiting device 14 puts bait into the inner culture pond 11, the bait can be dispersed by promoting the swirling flow of the water body to feed the prawns, or the air volume can be increased after the prawns have finished eating and the feed can make the water body The swirl is intensified, and the residual bait and feces are swirled to the steel wire mesh 1111, and fall into the water body of the outer culture pond 12 through the steel wire mesh 1111; The water device 17 can feed the prawns by promoting the swirling flow of the water after the automatic baiting device 14 throws the bait into the outer culture pond 11, and the bait can be scattered to feed the prawns. The flow of air makes the swirl of the water body intensified, and the waste such as residual bait and feces is concentrated near the drainage and sewage outlet 1211. Finally, it is purified by the circulating water treatment equipment to obtain clean water and then passes through the water inlet pipe 13 of the circulating equipment. Respectively enter the inner culture pond 11 and the outer culture pond 12. In addition, the two automatic bait-throwing devices 14 can be designed and manufactured by adopting polypropylene food-grade plastic plates.

The aeration plate 16 is arranged on the inner side of the opening edge adjacent to the upper part of the outer culture pond, a first edge reinforcement hoop 1121 is arranged on the upper opening edge of the inner culture pond, and a second edge reinforcement hoop 1221 is arranged on the upper opening edge of the outer culture pond. Wherein, the second edge reinforcement hoop 1221 is a trachea structure, and the second edge reinforcement hoop 1221 is arranged in communication with the aeration pan 16 . During the breeding process, the aeration tray 16 can be properly aerated. In addition, the aeration pan 16 and the second edge reinforcement hoop 1221 can be designed and manufactured by using polypropylene food grade plastic plate.

During the culture process, the inner culture pond 11 cultures the shrimp seedlings until the standard thickness, and the outer culture pond 12 cultures the shrimp seedlings after the standard thickness until the final growth. After the outer culture pond 12 receives shrimp by fishing nets or trapping, when the shrimp seedlings in the inner culture pond 11 need to turn to the outer culture pond 12 when the thickened shrimps need to be turned to the outer culture pond 12, the fixed support rods 15 can be removed respectively, and the The inner culture pond 11 is hooked to the vicinity of the upper opening edge of the outer culture pond, and the movable cover 1112 is opened through the live handle 1113, so that the inner culture pond 11 communicates with the outer culture pond 12. Raise one end of the upper opening edge of the inner culture pond, so that the food-grade plastic plate bottom wall 111 of the inner culture pond 11 is supported and fixed on the springboard 18, so that the upper opening of the inner culture pond The other end of the edge and the second opening are all connected to the water body of the outer culture pond 12 due to an inclination, and then cast bait near the springboard 18, and after some time, the thick shrimp seedlings pass through the top of the inner culture pond. The other end of the edge of the opening and the second opening are transferred into the outer culture pond 12, and after the thickened shrimp seedlings are transferred into the outer culture pond 12, the movable cover plate 1112 is re-opened by the live handle 1113. After covering the second opening, and re-floating and stabilizing the inner culture pond 11 through a plurality of the fixed struts 15, the inner culture pond 11 is fed with shrimp fry again.

As shown in Fig. 3, the present embodiment also provides a kind of indoor prawn three-dimensional grading cultivation process based on the indoor prawn three-dimensional grading cultivation device 1, which includes the following steps:

Step S1, providing an inner culture pond and an outer culture pond, both of which are made of food-grade plastic plates;

Step S2, suspending the inner culture pond in the water body of the outer culture pond, the bottom wall of the inner culture pond is provided with a first opening inlaid with a steel wire mesh and a second opening covered by a movable cover;

Step S3, putting the shrimp seedlings into the inner culture pond for standard rough culture, and putting the standard coarse shrimp seedlings into the outer culture pond for grow-out culture;

Step S4, when the prawns in the outer aquaculture pond are successfully cultivated, the shrimps are harvested by fishing nets or trapping, and then the shrimp seedlings that have been marked thick in the inner aquaculture pond are transferred to the outer aquaculture pond through the second opening. The culture pond is grown and cultivated, and finally new shrimp seedlings are put into the inner culture pond to carry out standard coarse culture.

Further, the indoor three-dimensional grading cultivation process for prawns also includes the following steps: providing a circulating water treatment device, a drainage and sewage outlet is provided in the middle of the bottom wall of the outer breeding pond, and one end of the circulating water treatment equipment is connected to the drainage and sewage discharge The other end is respectively connected to the inner aquaculture pond and the outer aquaculture pond through the water inlet pipe of the circulation equipment, and the water body with waste such as residual bait and feces is discharged from the drainage and sewage outlet, and after being purified by the circulation water treatment equipment , and then re-enter the inner culture pond and the outer culture pond through the water inlet pipe of the circulation equipment.

An indoor three-dimensional grading culture device for prawns provided in this embodiment comprises the inner culture pond and the outer culture pond, and the inner culture pond is suspended in the outer culture pond. Adopting the method of nesting ponds in such pools, although it seems that the inner culture ponds occupy part of the culture water body of the outer culture ponds, in fact, this hierarchical culture method helps to increase the culture density of the outer culture ponds, which is Because prawns are animals that love to climb and bottom, and the inner culture pond is relatively shallow and floats in the outer culture pond, so the inner culture pond does not occupy the bottom area of the outer culture pond, and will not It affects the bottom resting of prawns, and at the same time, the outer wall of the inner culture pond can be used as a place for prawns to climb, which increases the climbing place of prawns, thereby improving the culture density of the outer culture pond. In addition, adopting this method of nesting ponds within ponds can not only save land use, save water for cultivation and increase the frequency of cultivation, but also because the bottom wall of the food-grade plastic plate of the inner cultivation pond is provided with a first opening inlaid with steel wire mesh, The water bodies in the inner culture pond and the outer culture pond can communicate with each other, and the water environment is close, so that after the thickened shrimp seedlings are transferred from the inner culture pond to the outer culture pond, they can adapt to the surrounding environment more easily. Reduce stress and increase the survival rate of prawns after transfer to the pond. Therefore, the indoor prawn three-dimensional grading culture device can greatly increase the frequency of prawn cultivation, thereby greatly increasing the annual output of prawns. Also, because both the inner breeding pond and the outer breeding pond are designed and processed by food-grade plastic boards, the input cost is low, the operation is light, waterproof and durable, and there is no need to dealkalize the pond, which is environmentally friendly, safe and leak-proof. In addition, this embodiment also provides an indoor three-dimensional grading cultivation process for prawns based on the above-mentioned indoor three-dimensional grading cultivation device for prawns.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (8)

1. An indoor three-dimensional grading culturing device for prawns, characterized in that, the indoor three-dimensional grading culturing device for prawns comprises an inner culture pond and an outer culture pond; the inner culture pond and the outer culture pond respectively comprise a food grade plastic plate bottom wall, the side wall of the food-grade plastic plate and the upper opening, one end of the side wall of the food-grade plastic plate is in contact with the bottom wall of the food-grade plastic plate, and the other end surrounds the upper opening; the inner breeding pool is suspended on the In the water body of the outer culture pond; the bottom wall of the food-grade plastic plate of the inner culture pond is provided with a first opening and a second opening, the first opening is inlaid with steel wire mesh, and the second opening is covered by a movable cover plate , the upper opening edge of the inner culture pond is provided with a movable handle, and the movable handle is connected with the movable cover plate through a linkage rod; the indoor three-dimensional grading culture device for prawns also includes a springboard and a buoy; the buoy is adjacent to The upper opening edge of the inner culture pond is arranged on the outside, and the two ends of the buoy are conical structures; one end of the springboard is connected to the buoy, and the other end is connected to the upper opening edge of the outer culture pond. The breeding ponds mentioned above are all cylindrical structures. 2. indoor prawn three-dimensional grading cultivation device as claimed in claim 1, is characterized in that, described indoor prawn three-dimensional grading cultivation device also comprises circulation equipment inlet pipe, circulation water treatment equipment; The inner culture pond and the outer culture pond, and the water inlet pipe of the circulation equipment is provided with an inner culture pond inlet valve and an outer culture pond inlet gate valve; the food-grade plastic plate bottom wall of the outer culture pond is provided with a drainage Sewage outlet, one end of the circulating water treatment equipment is connected to the drainage and sewage outlet, and the other end is connected to the water inlet pipe of the circulation equipment. 3. The indoor three-dimensional grading culture device for prawns as claimed in claim 1, wherein the indoor three-dimensional grading culture device for prawns also includes a plurality of fixed support rods, and the plurality of fixed support rods are respectively connected above the inner culture pond Between the edge of the opening and the edge of the opening above the outer breeding pond. 4. The indoor three-dimensional grading cultivation device for prawns as claimed in claim 3, wherein the two ends of each said fixed strut are respectively connected to the upper opening edge of the inner culture pond and the upper opening of the outer culture pond through a movable hook structure. edge connection. 5. The indoor three-dimensional grading culture device for prawns according to claim 1, wherein a first edge reinforcement hoop is provided on the opening edge above the inner culture pond, and a second edge reinforcement is arranged on the opening edge above the outer culture pond. hoop; the indoor three-dimensional grading culture device for prawns also includes an aeration plate, the second edge reinforcement hoop is a trachea structure, and the aeration plate is connected to the second edge reinforcement hoop. 6. indoor prawn three-dimensional grading cultivation device as claimed in claim 1, is characterized in that, described indoor prawn three-dimensional grading cultivation device also comprises two automatic bait throwing devices and two air flotation pushing water devices, two described automatic bait throwing devices The upper opening edge of the inner culture pond and the outer edge of the upper opening of the outer culture pond are arranged respectively; 7. A kind of indoor prawn three-dimensional graded cultivation technique, is characterized in that, comprises the following steps, An inner culture pond and an outer culture pond are provided, and the inner culture pond and the outer culture pond are all made of food-grade plastic plates; Suspending the inner culture pond in the water body of the outer culture pond, the bottom wall of the inner culture pond is provided with a first opening inlaid with a steel wire mesh and a second opening covered by a movable cover; Shrimp seedlings are put into the inner culture pond for standard rough culture, and the shrimp seedlings after the standard thickness are put into the outer culture pond for grow-out culture; When the prawns in the outer culture pond are grown and cultured successfully, collect the shrimp by fishing nets or trapping, and then transfer the thickened shrimp seedlings in the inner culture pond to the outer culture pond through the second opening Cultivation is carried out, and new shrimp seedlings are put into the inner culture pond at last to carry out standard rough cultivation. 8. The indoor prawn three-dimensional graded culture process as claimed in claim 7, is characterized in that, also comprises the following steps, a circulating water treatment equipment is provided, the bottom wall of the outer culture pond is provided with a drainage outlet in the middle, and the circulation One end of the water treatment equipment is connected to the drainage and sewage outlet, and the other end is respectively connected to the inner aquaculture pond and the outer aquaculture pond through the water inlet pipe of the circulation equipment, and the water body with dirt is discharged from the drainage and sewage outlet. After the purification treatment by the treatment equipment, the water re-enters the inner culture pond and the outer culture pond respectively through the water inlet pipe of the circulation equipment.