An apparatus and method for breeding a ghost shrimp

Abstract

The present application belongs to the technical field of shrimp breeding, and particularly relates to a kind of prawn breeding equipment and method, including breeding box and shrimp discharging mechanism, and the shrimp discharging mechanism includes isolation box, overflow pipe and bellows, a plurality of escape holes are formed in the circumference of the isolation box, and the isolation box is coaxially arranged inside the breeding box and coaxially arranged with the shrimp discharging port; the bellows is coaxially arranged inside the isolation box, the bottom end of the bellows is in communication with the shrimp discharging port, the upper end of the bellows is in communication with the overflow pipe, and a plurality of overflow holes are uniformly distributed in the height direction of the circumference of the overflow pipe; the upper end of the overflow pipe extends to the upper side of the isolation box and is connected with the lifting mechanism, and the lifting mechanism is used to adjust the height of the overflow pipe. Through the linkage of air disc and overflow pipe lifting, the precise collection mode of "high-level fine flow + high-level bubble" and the powerful tank cleaning mode of "low-level strong discharge + low-level bubble" are realized, the separation efficiency of parent shrimp and juvenile shrimp is improved under the condition of solving the problem of dissolved oxygen, and the survival rate of juvenile shrimp is further improved.

Description

Technical Field

[0001] This invention belongs to the field of shrimp farming technology, and in particular relates to a crayfish breeding equipment and method. Background Technology

[0002] The core of a successful crayfish breeding system lies in creating a stable, safe, and suitable environment for the growth of both broodstock and juvenile crayfish. Currently, large-scale, high-efficiency crayfish breeding commonly uses a "zoning management" model. Its core idea is "dedicated ponds for specific purposes, phased management," which greatly improves the survival rate and uniformity of crayfish larvae growth. The key step involves transferring berried female crayfish to independent breeding tanks, and after hatching, separating the juvenile crayfish from the predatory females.

[0003] Common techniques for separating juvenile shrimp mainly rely on two principles:

[0004] Physical escape method: An escape hole of a specific size is made in the bottom or side wall of the breeding box to allow the juvenile shrimp to pass through while blocking the mother shrimp.

[0005] Overflow method: By continuously feeding water and draining water through an overflow pipe, a weak water flow is used to carry the suspended juvenile shrimp out for collection.

[0006] Deficiencies of existing technology:

[0007] (1) Low separation efficiency:

[0008] The single physical escape hole relies on the random swimming of juvenile shrimp, making it difficult to effectively collect juvenile shrimp in the corners of the box and hiding places, resulting in "collection dead zones".

[0009] The overflow method with a single flow rate makes it difficult to balance "not harming shrimp" and "efficiently removing shrimp". If the water flow is too slow, the shrimp cannot be removed effectively; if it is too fast, it will impact and damage juvenile and female shrimp, and may even cause female shrimp to "kick their eggs". The entire separation process is passive, resulting in a long separation cycle and low efficiency.

[0010] (2) The survival rate of juvenile shrimp is greatly affected by human operation:

[0011] Traditional fixed designs cannot dynamically adjust the environment according to different incubation stages (such as early incubation and late incubation) and the behavior of juvenile shrimp, and lack refined management methods.

[0012] Overflow shrimp discharge requires the installation of an oxygenation system, which results in a complex overall breeding equipment structure and a single function. It only solves the dissolved oxygen problem and cannot help improve the separation efficiency of mother shrimp and juvenile shrimp, further reducing the survival rate of juvenile shrimp. Summary of the Invention

[0013] In view of the technical problems existing in the background art, the present invention provides a crayfish breeding device and method.

[0014] To achieve the above object, the technical scheme provided by the present application is as follows:

[0015] The shrimp breeding device comprises a breeding box and a shrimp discharging mechanism arranged in the breeding box,

[0016] The shrimp discharging mechanism comprises an isolation box, an overflow pipe and a corrugated pipe, a plurality of escape holes are formed in the circumference of the isolation box, the isolation box is arranged in the breeding box and coaxially arranged with the shrimp discharging port; the corrugated pipe is coaxially arranged in the isolation box, the bottom end of the corrugated pipe is connected and communicated with the shrimp discharging port, the upper end of the corrugated pipe is connected and communicated with the overflow pipe, and a plurality of overflow holes are uniformly distributed in the height direction of the circumference of the overflow pipe;

[0017] The upper end of the overflow pipe extends to the upper side of the isolation box and is connected with a lifting mechanism, and the lifting mechanism is used for adjusting the height of the overflow pipe.

[0018] Optionally, the shrimp discharging mechanism further comprises a gas disc, the gas disc is arranged in the shape of a ring; the upper and lower ends of the corrugated pipe are respectively integrally provided with a connecting pipe, and the gas disc is arranged on the outer wall of the connecting pipe at the bottom side of the corrugated pipe.

[0019] Optionally, the shrimp discharging mechanism further comprises a gas disc, the gas disc is arranged in the shape of a ring; the upper and lower ends of the corrugated pipe are respectively integrally provided with a connecting pipe, and the gas disc is arranged on the outer wall of the connecting pipe at the bottom side of the corrugated pipe.

[0020] Optionally, the shrimp breeding device further comprises a seed shrimp box, a filter box and a breeding box, one side of the seed shrimp box is provided with the breeding box, a plurality of layers of breeding boxes are arranged on the upper side of the middle of the seed shrimp box, and the upper end of the breeding box is provided with the filter box; the filter box is provided with a first water pump and a second water pump, the filter box is divided into a sewage chamber and a clean water chamber by a partition plate, the first water pump draws water in the seed shrimp box to the sewage chamber in the filter box through a pipeline, the second water pump draws water in the clean water chamber in the filter box to the breeding box through a pipeline, the water in the breeding box is overflowed to the breeding box through the shrimp discharging mechanism, and the water in the breeding box is overflowed to the seed shrimp box through the overflow.

[0021] Optionally, the breeding box is provided with two layers, each layer of breeding boxes comprises a plurality of breeding boxes arranged in two rows in a symmetrical manner, one side of the breeding box is provided with a side opening, a side cover plate is detachably arranged on the side opening, an inlet pipe is arranged on the side cover plate, and the outer side of the side cover plate faces the inner cavity of the seed shrimp box.

[0022] Optionally, the upper end of the breeding box is sequentially provided with a first mounting groove, a second mounting groove and a third mounting groove, the bottom side of the breeding box is provided with a sewage outlet, a plurality of sewage pipes are arranged in the first mounting grooves of the breeding boxes, and a plurality of sewage branch pipes connected with the sewage outlets at the bottom side of the upper breeding boxes are arranged on the sewage pipes; a plurality of shrimp discharge pipes are arranged in the second mounting grooves of the breeding boxes, and a plurality of shrimp discharge branch pipes connected with the shrimp discharge outlets at the bottom side of the upper breeding boxes are arranged on the shrimp discharge pipes; a plurality of water inlet pipes are arranged in the third mounting grooves of the breeding boxes, and a plurality of water inlet branch pipes communicated with the lower breeding boxes are arranged on the water inlet pipes.

[0023] Optionally, the lifting mechanism comprises a lifting cylinder, a mounting plate and hollow shafts, the lifting cylinder is fixed on both sides of the filter box, the lifting cylinder is connected with the mounting plate for transmission, the mounting plate is symmetrically provided with two mounting arms which are away from each other at the top and bottom, the two mounting arms at the top and bottom are in V shape, and the mounting arms on both sides are connected through four hollow shafts; the upper end of the overflow pipe is integrally provided with a guide pipe, the upper end of the guide pipe is provided with a sleeve, and the hollow shafts are sleeved on the inner wall of the sleeve; the hollow shafts at the top and bottom are arranged in the second mounting grooves of the corresponding breeding boxes, and the hollow shaft at the bottom is located at the bottom side of the upper shrimp discharge pipe.

[0024] Optionally, the upper end of the gas disc is connected with an air inlet branch pipe, the air inlet branch pipe penetrates the isolation box upwards and is connected with the sleeve pipe, a plurality of air outlet through holes are uniformly distributed on the hollow shafts, the positions of the air outlet through holes correspond to the sleeve pipe, and one end of the plurality of hollow shafts is connected with the oxygenator through an air inlet main pipe.

[0025] Optionally, the bottom side of the breeding box is sequentially provided with a fourth mounting groove and a fifth mounting groove, the fourth mounting groove and the third mounting groove are oppositely arranged, and the fifth mounting groove and the second mounting groove are oppositely arranged.

[0026] A method for breeding crayfishes, comprising the following steps:

[0027] S1, the female crayfishes to be spawned are placed in a seed crayfish box for breeding, and the female crayfishes carrying eggs in the seed crayfish box are put into the multi-layer breeding boxes on the upper side of the seed crayfish box through the crayfish inlet pipe, and the female crayfishes are located in the breeding boxes outside the isolation box for hatching; during the period, the water inlet pipe continuously supplies water, the overflow pipe keeps high position and continuously overflows to discharge water, and the liquid level height in the breeding box is limited;

[0028] S2, the combination of the mild mode and the strong discharge mode discharges the juvenile crayfishes:

[0029] Mild mode discharge of crayfishes: in a high-position overflow mode, the gentle water flow generated by the overflow pipe is used to gently overflow the daily hatched and fragile juvenile crayfishes to the breeding box;

[0030] Strong discharge mode: the height of overflow pipe is temporarily reduced by lifting mechanism, the water area and drainage speed are instantaneously increased, and the strong discharge of shrimps to the cultivation box is realized;

[0031] The gentle mode is used continuously during the whole breeding process, and the strong mode is avoided during the initial breeding period and is periodically used during the middle and late breeding period.

[0032] S3, the air disc actively guides the shrimps:

[0033] Precise collection of shrimps: when the shrimps are discharged in the gentle mode, the air disc is lifted to the high position with the overflow pipe, a strong "oxygen-rich bubble flow" area is formed below the overflow port, the oxygen-seeking and flow-seeking properties of the juvenile shrimps are utilized, the juvenile shrimps are actively attracted to the overflow port, and the juvenile shrimps are discharged.

[0034] Bottom driving: when the shrimps are discharged in the strong mode, the air disc is lowered to the low position with the overflow pipe, the bubble column penetrating through the water body is utilized to stir the bottom of the box, the hidden juvenile shrimps are "driven" out, and the complete discharge is realized in cooperation with the strong mode.

[0035] The present application has the following advantages and beneficial effects:

[0036] The present application separates and discharges the juvenile shrimps and the female shrimps through the design of the liftable and multi-mode overflow system, improves the separation efficiency, and ensures the survival rate of the juvenile shrimps.

[0037] Gentle mode: high overflow, only a small amount of overflow holes at the top work, gentle water flow is generated, is suitable for daily incubation and gentle collection of fragile juvenile shrimps, and avoids impact damage to the juvenile shrimps and the female shrimps.

[0038] Strong discharge mode: the height of the overflow pipe is temporarily reduced, the water area and drainage speed are instantaneously increased, the scouring force is formed, the efficient discharge is realized, the discharge efficiency is greatly improved, and the juvenile shrimps, residual feed and feces in the dead angle of the bottom side of the cultivation box can be regularly removed.

[0039] In addition to oxygen supply, the present application combines the nano air disc with a liftable overflow pipe through the height-adjustable nano air disc behavior guiding system, so that the nano air disc and the overflow pipe cooperate to realize the function of attracting and discharging shrimps.

[0040] Precise collection of shrimps: when the shrimps are discharged in the gentle mode, the air disc is lifted to the high position with the overflow pipe, a strong "oxygen-rich bubble flow" area is formed below the overflow port, the oxygen-seeking and flow-seeking properties of the juvenile shrimps are utilized, the juvenile shrimps are actively attracted to the overflow port, and the juvenile shrimps are discharged.

[0041] Bottom driving: when the shrimps are discharged in the strong mode, the air disc is lowered to the low position with the overflow pipe, the bubble column penetrating through the water body is utilized to stir the bottom of the box, the hidden juvenile shrimps are "driven" out, and the complete discharge is realized in cooperation with the strong mode.

[0042] Through multi-mode linkage: according to different hatching stages (such as just hatched and late hatching) and the behavior dynamics of juvenile shrimps, the environment is adjusted, an oxygenation system is set when shrimps are discharged by overflow method, the air disc and the overflow pipe are linked up and down, the precise collection mode of "high-level fine flow + high-level bubbles" and the powerful tank cleaning mode of "low-level strong discharge + low-level bubbles" are realized, the separation efficiency of mother shrimps and juvenile shrimps is improved under the solution of dissolved oxygen, and the survival rate of juvenile shrimps is further improved.

[0043] Through "bubble active guidance" and "hydraulic mode switching", the separation of juvenile shrimps is changed from passive waiting to active driving and attraction, and the collection dead angle is basically eliminated.

[0044] The survival rate of juvenile shrimps is significantly improved: the mild mode ensures the stability of the environment in the early hatching stage; the powerful and adjustable oxygenation system guarantees sufficient water dissolved oxygen; the active and rapid separation mechanism greatly shortens the time of juvenile shrimps and mother shrimps coexisting, and fundamentally reduces the risk of being preyed upon.

[0045] The present application integrates multiple functional modules such as oxygenation, flow regulation, water level control, behavior guidance and physical separation in a simple mechanical system, avoids complex electrical control, has low failure rate, is easy to maintain, and is very suitable for popularization and application in large-scale breeding farms.

[0046] In summary, the present scheme no longer regards the breeding tank as a simple container, but turns it into an "intelligent environment" that can dynamically interact with the biological behavior of paddle shrimps. It successfully solves the problems of separation efficiency and survival rate that have long plagued the paddle shrimp breeding industry through ingenious mechanical design. BRIEF DESCRIPTION OF DRAWINGS

[0047] Figure 1 is a structural view of a paddle shrimp breeding device in the present application;

[0048] Figure 2 is a structural view of a paddle shrimp breeding device in the present application;

[0049] Figure 3 is a front view of a paddle shrimp breeding device in the present application;

[0050] Figure 4 is a left view of Figure 3 ;

[0051] Figure 5 is a cross-sectional view of Figure 3 along the direction of A-A;

[0052] Figure 6 is a cross-sectional view of Figure 4 along the direction of B-B;

[0053] Figure 7 is a layout structural view of a double-layer breeding tank in the present application;

[0054] Figure 8 This is the second structural diagram of the double-layer breeding box in this invention;

[0055] Figure 9 This is the third structural diagram of the double-layer breeding box in this invention;

[0056] Figure 10 for Figure 7 Top view;

[0057] Figure 11 This is a cross-sectional view of the breeding box and the shrimp arranging mechanism in this invention;

[0058] Figure 12 This is the fourth diagram showing the arrangement of the double-layer breeding box in this invention;

[0059] Figure 13 This is the fifth diagram showing the arrangement of the double-layer breeding box in this invention;

[0060] Figure 14 for Figure 13 A magnified view of a portion of point a.

[0061] Figure 15 This is one of the structural diagrams of the breeding box in this invention;

[0062] Figure 16 This is the second structural diagram of the breeding box in this invention;

[0063] Figure 17 This is a structural diagram of the hydroponic box in this invention;

[0064] Figure 18 This is a structural diagram of the shrimp-discharging mechanism in this invention;

[0065] Figure 19 This is one of the cross-sectional views of the shrimp arranging mechanism in this invention;

[0066] Figure 20 This is a second cross-sectional view of the shrimp-discharging mechanism in this invention;

[0067] Figure 21 This is the third cross-sectional view of the shrimp arranging mechanism in this invention.

[0068] Attached reference numerals: 1-Shrimp box, 11-Incubation box, 12-Second water pump, 13-First water pump, 14-Aerator, 15-Main air inlet pipe, 2-Filter box, 21-Baffle, 22-Mounting frame, 23-First filter layer, 24-Second filter layer, 25-Hydroculture box, 251-Hydroculture frame, 252-Side hole, 3-Breeding box, 31-First mounting slot, 32-Second mounting slot, 33-Third mounting slot, 34-Fourth mounting slot, 35-Fifth mounting slot, 36-Shrimp discharge port, 37- Sewage outlet, 38-side opening, 4-side cover plate, 41-shrimp inlet pipe, 5-lifting cylinder, 51-mounting plate, 52-mounting arm, 53-hollow shaft, 6-isolation box, 61-escape hole, 62-positioning pipe, 7-corrugated pipe, 71-connecting pipe, 72-overflow pipe, 721-overflow round hole, 722-overflow strip hole, 73-guide pipe, 74-sleeve, 741-sealing ring, 75-air plate, 751-air inlet branch pipe, 8-water inlet pipe, 81-vertical pipe, 82-shrimp discharge pipe, 83-sewage discharge pipe. Detailed Implementation

[0069] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0070] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0071] Example 1

[0072] like Figures 1-21 As shown, a crayfish breeding device includes a breeding box 3 and a shrimp discharge mechanism disposed inside the breeding box 3. The bottom side of the breeding box 3 is provided with a shrimp discharge port 36 for discharging the juvenile shrimp hatched by the mother shrimp out of the breeding box 3.

[0073] like Figures 7-21As shown, the shrimp discharging mechanism includes an isolation box 6, an overflow pipe 72 and a bellows 7. The isolation box 6 is arranged inside the breeding tank 3, and a plurality of escape holes 61 are arranged on the circumference of the isolation box 6, which allow the juvenile shrimp to pass freely but block the adult shrimp. The isolation box 6 is coaxially arranged with the shrimp discharging port 36, and a positioning pipe 62 is arranged on the bottom side of the isolation box 6 and is matched with the inner wall of the shrimp discharging port 36. The bellows 7 is arranged coaxially inside the isolation box 6 and is flexible and elastic. The bottom end of the bellows 7 is connected to the shrimp discharging port 36, and the upper end of the bellows 7 is connected to the overflow pipe 72. A plurality of overflow holes are uniformly distributed along the height direction on the circumference of the overflow pipe 72, which allow the juvenile shrimp to pass freely.

[0074] Referring to Figure 19 , as one of the modes, the overflow hole is an overflow circular hole 721, which is uniformly distributed along the height direction on the circumference of the overflow pipe 72.

[0075] Referring to Figure 20 , as another mode, the overflow hole is an overflow strip hole 722, which is vertically arranged along the height direction of the overflow pipe 72 and is uniformly distributed in the circumferential direction of the overflow pipe 72.

[0076] The upper end of the overflow pipe 72 extends to the upper side of the isolation box 6 and is connected to a lifting mechanism. The lifting mechanism is used to adjust the height of the overflow pipe 72, so as to adjust the water area and the drainage speed of the overflow pipe 72.

[0077] The present application separates and discharges juvenile shrimp and adult shrimp through the design of a liftable and multi-mode overflow system, which improves the separation efficiency while ensuring the survival rate of juvenile shrimp.

[0078] Gentle mode: high overflow, only a small amount of top overflow holes work, generating gentle water flow, suitable for daily incubation and gentle collection of fragile juvenile shrimp, avoiding impact damage to juvenile shrimp and adult shrimp.

[0079] Strong discharge mode: temporarily reduce the height of the overflow pipe 72, instantaneously increase the water area and the drainage speed, form a scouring force, realize efficient discharge, greatly improve the discharge efficiency, and can periodically remove juvenile shrimp, residual feed and feces in the dead angle at the bottom side of the breeding tank 3.

[0080] Example 2

[0081] As Figures 11-19As shown, as a preferred mode of the present application, the shrimp discharging mechanism further comprises an air disc 75, which is arranged in a ring shape; the upper and lower ends of the corrugated pipe 7 are respectively integrally provided with a connecting pipe 71, the outer wall of the connecting pipe 71 is smooth, and the air disc 75 is arranged on the outer wall of the connecting pipe 71 at the bottom side of the corrugated pipe 7. In this case, the air disc 75 is fixed to the bottom side of the isolation box 6, oxygen is supplied through the air disc 75, a strong “oxygen-rich bubble flow” area is created below the overflow pipe 72 and outside the corrugated pipe 7, the oxygen-seeking and flow-seeking behaviors of the juvenile shrimp are utilized to actively attract the juvenile shrimp in the breeding tank 3 into the isolation box 6 and to the overflow port for discharge; at the same time, the juvenile shrimp hidden in the tank can be “driven out” by agitating the bottom of the tank through the bubble column penetrating the water body, and the strong discharge mode is used to achieve complete discharge.

[0082] As shown, Figure 21 As shown, as another preferred mode of the present application, the shrimp discharging mechanism further comprises an air disc 75, which is arranged in a ring shape; the upper and lower ends of the corrugated pipe 7 are respectively integrally provided with a connecting pipe 71, and the air disc 75 is arranged on the outer wall of the connecting pipe 71 at the upper side of the corrugated pipe 7. In this case, the air disc 75 is movably arranged and synchronously adjusted in height with the overflow pipe 72.

[0083] The present application uses a height-adjustable nano air disc 75 as a guide system to achieve oxygen supply and, in combination with a liftable overflow pipe 72, to achieve the function of attracting and discharging shrimp.

[0084] Precise shrimp collection: when discharging shrimp in a gentle mode, the air disc 75 is lifted to a high position with the overflow pipe 72 to create a strong “oxygen-rich bubble flow” area directly below the overflow port, the oxygen-seeking and flow-seeking behaviors of the juvenile shrimp are utilized to actively attract them to the overflow port, greatly improving the collection targeting, and the efficiency of discharging shrimp in the gentle mode can be greatly improved.

[0085] Bottom driving: when discharging shrimp in a strong mode, the air disc 75 is lowered to a low position with the overflow pipe 72, the bubble column penetrating the water body is used to agitate the bottom of the tank to “drive out” the hidden juvenile shrimp, and the strong discharge mode is used to achieve complete discharge. In the driving process, the overflow pipe 72 is repeatedly lifted and lowered, the corrugated pipe 7 is repeatedly lifted and lowered, the outer side of the corrugated structure is protruded (acting as stirring blades), and the air disc 75 is repeatedly lifted and lowered, the juvenile shrimp is disturbed in the height direction, and efficient and complete discharge is achieved.

[0086] Through multi-mode linkage: according to different incubation stages (such as just hatched and late hatching) and the behavior dynamics of juvenile shrimps, the environment is adjusted, an oxygenation system is set when shrimps are overflowed, the air disc 75 and the overflow pipe 72 are linked up and down, the precise collection mode of "high-level fine flow + high-level bubbles" and the powerful tank cleaning mode of "low-level strong discharge + low-level bubbles" are realized, under the solution of dissolved oxygen, the separation efficiency of mother shrimps and juvenile shrimps is improved, and the survival rate of juvenile shrimps is further improved.

[0087] Through "bubble active guidance" and "hydraulic mode switching", the separation of juvenile shrimps is changed from passive waiting to active driving and attraction, and the collection dead angle is basically eliminated.

[0088] Significantly improve the survival rate of juvenile shrimps: the mild mode ensures the stability of the environment in the early stage of hatching; the powerful and adjustable oxygenation system guarantees sufficient water dissolved oxygen; the active and rapid separation mechanism greatly shortens the time of juvenile shrimps and mother shrimps together, and fundamentally reduces the risk of being preyed upon.

[0089] The present application integrates multiple functional modules such as oxygenation, flow regulation, water level control, behavior guidance and physical separation in a simple mechanical system, avoids complex electrical control, has low failure rate, is easy to maintain, and is very suitable for popularization and application in large-scale breeding farms.

[0090] In summary, this scheme no longer regards the breeding tank 3 as a simple container, but turns it into an "intelligent environment" that can dynamically interact with the biological behavior of paddle shrimps. It successfully solves the separation efficiency and survival rate problem that has long plagued the paddle shrimp breeding industry through ingenious mechanical design.

[0091] Example 3

[0092] As Figures 1-6As shown, the prawn breeding device provided by the present application further comprises a seed prawn box 1, a filter box 2 and a breeding box 11, the seed prawn box 1 is provided with the breeding box 11 on one side, the seed prawn box 1 is provided with a plurality of layers of breeding boxes 3 on the upper side in the middle, the breeding box 3 is provided with the filter box 2 on the upper end, and the filter box 2 is supported and fixed on the seed prawn box 1 through the mounting frame 22 at the bottom end. The filter box 2 is provided with a first water pump 13 and a second water pump 12, the filter box 2 is divided into a sewage cavity and a clean water cavity by the partition plate 21, the first water pump 13 purifies the water in the seed prawn box 1 by pumping the water into the sewage cavity in the filter box 2 through the pipeline, and the second water pump 12 pumps the clean water in the clean water cavity in the filter box 2 into the breeding box 3 through the vertical pipe 81 to provide the water source for breeding in the breeding box 3. The water in the breeding box 3 overflows to the breeding box 11 through the prawn discharging mechanism, the breeding box 11 is used for temporarily breeding the juvenile prawns discharged from the breeding box 3, and the water in the breeding box 11 overflows to the seed prawn box 1 in the form of overflow. Through the compact design of the seed prawn box 1, the filter box 2, the breeding box and the breeding box 11, the recycling of the water source is realized, the female prawns to be spawned are placed in the seed prawn box 1, the female prawns carrying eggs are placed in the breeding box 3 for breeding, the juvenile prawns are separated from the female prawns and placed in the breeding box 11 for temporary breeding, and the "zoning management" mode is adopted, that is, "special pool for special purpose and stage management", which can greatly improve the survival rate and growth uniformity of the prawn larvae.

[0093] As shown in Figure 5 , Figure 6 and Figure 17 , the filter box 2 is sequentially filled with a first filter layer 23 and a second filter layer 24, and a plurality of water culture boxes 25 are floatingly arranged in the sewage cavity and used for planting vegetables and the like. The water culture box 25 is detachably provided with a water culture frame 251 in the middle, and a plurality of side holes 252 are uniformly distributed around the water culture box 25, which are used to reduce the weight of the whole water culture box 25 and allow the water outlet pipeline of the first water pump 13 to extend into the filter box 2 through the side hole 252 of one of the water culture boxes 25.

[0094] Embodiment 4

[0095] As shown in Figures 1-21 , in the present application, the breeding box 3 is provided with at least two layers, each layer of the breeding box 3 comprises a plurality of breeding boxes 3 arranged in two rows and symmetrically, one side of the breeding box 3 is provided with a side opening 38, a side cover plate 4 is detachably arranged on the side opening 38, the side cover plate 4 is provided with an inlet pipe 41, and the outer side of the side cover plate 4 faces the inner cavity of the seed prawn box 1, so that the female prawns in the seed prawn box 1 can be put into the breeding box 3 through the inlet pipe 41 for breeding. When the breeding box 3 is installed, the upper and lower two layers of breeding boxes 3 are pressed and buckled to each other.

[0096] Further, the upper end of the breeding tank 3 is sequentially provided with a first mounting groove 31, a second mounting groove 32 and a third mounting groove 33, the bottom side of the breeding tank 3 is provided with a pollution discharge port 37, a plurality of pollution discharge pipes 83 are arranged in the first mounting groove 31 of the breeding tank 3, a plurality of pollution discharge branch pipes connected with the pollution discharge port 37 at the bottom side of the upper breeding tank 3 are arranged on the pollution discharge pipe 83, that is, the pollution discharge pipe 83 at the bottom side of the upper breeding tank 3 is accommodated in the first mounting groove 31 of the lower breeding tank 3, and compact installation is realized. A plurality of shrimp discharge pipes 82 are arranged in the second mounting groove 32 of the breeding tank 3, a plurality of shrimp discharge branch pipes connected with the shrimp discharge port 36 at the bottom side of the upper breeding tank 3 are arranged on the shrimp discharge pipe 82, that is, the shrimp discharge pipe 82 at the bottom side of the upper breeding tank 3 is accommodated in the second mounting groove 32 of the lower breeding tank 3, and compact installation is realized; a plurality of water inlet pipes 8 are arranged in the third mounting groove 33 of the breeding tank 3, a plurality of water inlet branch pipes communicated with the lower breeding tank 3 are arranged on the water inlet pipe 8, that is, the water inlet pipe 8 of the breeding tank 3 is accommodated in the third mounting groove 33 of the breeding tank 3, and compact installation is realized. This structure realizes compact installation and layout of the multi-layer breeding tank 3, and realizes compact installation of the pollution discharge pipe 83, the shrimp discharge pipe 82 and the water inlet pipe 8.

[0097] As shown in Figures 7-14 , in the present application, the lifting mechanism includes a lifting cylinder 5, a mounting plate 51 and a hollow shaft 53, the lifting cylinder 5 is fixed on both sides of the filter tank 2, the lifting cylinder 5 is fixed on the mounting frame 22, the lifting cylinder 5 is connected and driven with the mounting plate 51, two mounting arms 52 symmetrically arranged at both ends of the mounting plate 51 are away from each other, the two mounting arms 52 are in V shape, used for avoiding the shrimp discharge pipe 82. The two mounting arms 52 on both sides are connected by four hollow shafts 53; the upper end of the overflow pipe 72 is integrally provided with a guide pipe 73, the upper end of the guide pipe 73 is provided with a sleeve 74, the hollow shaft 53 is sleeved on the inner wall of the sleeve 74; the upper and lower two hollow shafts 53 are arranged in the second mounting groove 32 of the corresponding breeding tank 3, and the bottom hollow shaft 53 is located at the bottom side of the upper shrimp discharge pipe 82 (refer to Figure 13 ). This structure design realizes compact installation of the hollow shaft 53, and the hollow shaft 53 can be lifted in the second mounting groove 32 to adjust the height of the overflow pipe 72. During the lifting process of the mounting plate 51, the mounting arm 52 can avoid the collision and interference of the shrimp discharge pipe 82, the water inlet pipe 8 and the pollution discharge pipe 83, so that the synchronous adjustment of the overflow pipe 72 in all breeding tanks 3 can be realized, and efficient shrimp discharge can be realized.

[0098] Further, the bottom side of the breeding box 3 is sequentially provided with a fourth mounting groove 34 and a fifth mounting groove 35, the fourth mounting groove 34 and the third mounting groove 33 are oppositely arranged, and the fifth mounting groove 35 and the second mounting groove 32 are oppositely arranged. The design of the fifth mounting groove 35 can allow the hollow shaft 53 to adjust the position in it, reserve a larger adjustment stroke, and make the overflow pipe 72 have a larger adjustment stroke.

[0099] Further, the upper end of the air disc 75 is connected with a flexible air inlet branch pipe 751, the air inlet branch pipe 751 penetrates the isolation box 6 upwards and is connected with the sleeve 74, the two sides of the sleeve 74 are provided with sealing rings 741, the sealing rings 741 are tightly attached to the outer wall of the hollow shaft 53 to strengthen the sealing, the hollow shaft 53 is uniformly provided with a plurality of air outlet holes, the positions of the air outlet holes correspond to the sleeve 74, and one end of the plurality of hollow shafts 53 is connected with the oxygenator 14 through the air inlet main pipe 15. The design uses the hollow shaft 53 as a gas source flow pipeline, the oxygenator 14 supplies gas into the hollow shaft 53 through the air inlet main pipe 15, and then the gas enters the air inlet branch pipe 751 at the position of the sleeve 74 to reach the air disc 75, so that a compact gas supply pipeline layout is realized.

[0100] Embodiment 5

[0101] A method for breeding Acheen shrimp, comprising the following steps:

[0102] S1, placing the female shrimp to be spawned in the seed shrimp box 1 for breeding, and placing the female shrimp carrying eggs in the seed shrimp box 1 into the multi-layer breeding box 3 on the upper side of the seed shrimp box 1 through the shrimp feeding pipe 41, and the female shrimp is located in the breeding box 3 outside the isolation box 6 for hatching; during the period, the water inlet pipe 8 continuously feeds water, the overflow pipe 72 keeps high position to continuously overflow and drain water, and the liquid level height in the breeding box 3 is limited to L1;

[0103] S2, combination of gentle mode and strong drainage mode to drain juvenile shrimp:

[0104] Gentle mode for draining shrimp: using the way of high overflow, using the gentle water flow generated by the overflow pipe 72 to gently overflow the daily hatching and fragile juvenile shrimp to the cultivation box 11;

[0105] Strong drainage mode for draining shrimp: using the lifting mechanism to temporarily reduce the height of the overflow pipe 72 in a short time, instantaneously increasing the water area and the drainage speed, and realizing the strong drainage of the shrimp to the cultivation box 11;

[0106] The gentle mode for draining shrimp lasts throughout the breeding process, the strong mode for draining shrimp avoids the initial breeding period, and the strong mode for draining shrimp is periodically carried out in the middle and late breeding period;

[0107] S3, air disc 75 actively guiding the drainage of shrimp:

[0108] Precise collection shrimp: when shrimp is discharged in gentle mode, the air disc 75 rises with the overflow pipe 72 to a high position, directly creating a strong "oxygen-rich bubble flow" area below the overflow port, using the oxygenotaxis and rheotaxis of juvenile shrimp to actively attract them to the overflow port for discharge;

[0109] Bottom driving: when shrimp is discharged in strong discharge mode, the air disc 75 descends with the overflow pipe 72 to a low position, using the bubble column penetrating through the water body to agitate the bottom of the tank and "drive out" the juvenile shrimp hiding there, achieving complete discharge in combination with the strong discharge mode. Moreover, the height position of the overflow pipe 72 can be controlled to reciprocate, constantly changing the height position of the overflow pipe 72, reciprocating the air disc 75, and reciprocating the bellows 7, constantly using the reciprocating of the bellows 7, in combination with the outward convex corrugated structure (acting as stirring blades) and the constantly reciprocating air disc 75, both of which disturb all the surrounding water body in the height direction, fully disturbing the juvenile shrimp, achieving efficient and complete discharge. When shrimp is discharged in strong discharge mode, the isolation tank 6 is set outside to block the position of the mother shrimp, which is far away from the overflow pipe 72, so as not to affect the mother shrimp.

[0110] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A crayfish breeding device, characterized in that: It includes a breeding box and a shrimp discharge mechanism installed inside the breeding box, wherein the bottom side of the breeding box is provided with a shrimp discharge port. The shrimp discharge mechanism includes an isolation box, an overflow pipe, and a corrugated pipe. The isolation box has several escape holes around its circumference and is located inside the breeding box and coaxially arranged with the shrimp discharge port. The corrugated pipe is coaxially arranged inside the isolation box. The bottom end of the corrugated pipe is connected to the shrimp discharge port, and the upper end of the corrugated pipe is connected to the overflow pipe. The overflow pipe has several overflow holes evenly distributed along its height direction. The upper end of the overflow pipe extends to the upper side of the isolation box and is connected to the lifting mechanism, which is used to adjust the height of the overflow pipe. The shrimp retrieval mechanism also includes an air plate, which is ring-shaped; the upper and lower ends of the corrugated pipe are integrally provided with connecting pipes, and the air plate is disposed on the outer wall of the connecting pipe on the upper side of the corrugated pipe.

2. The crayfish breeding equipment according to claim 1, characterized in that: It also includes a broodstock box, a filter box, and a rearing box. A rearing box is set on one side of the broodstock box, and several layers of breeding boxes are set on the upper middle side of the broodstock box. A filter box is set on the upper end of the breeding box. A first water pump and a second water pump are set on the filter box. The filter box is divided into a sewage chamber and a clean water chamber by a partition. The first water pump pumps water from the broodstock box to the sewage chamber in the filter box through a pipe. The second water pump pumps water from the clean water chamber in the filter box to the breeding box through a pipe. The water in the breeding box overflows to the rearing box through a shrimp discharge mechanism. The water in the rearing box overflows to the broodstock box through an overflow mechanism.

3. The crayfish breeding equipment according to claim 2, characterized in that: The breeding box has two layers, and each layer of the breeding box includes several breeding boxes arranged symmetrically in two rows. One side of the breeding box is provided with a side opening, and a side cover is detachably provided on the side opening. A shrimp inlet pipe is provided on the side cover, and the outer side of the side cover faces the inner cavity of the broodstock box.

4. The crayfish breeding equipment according to claim 3, characterized in that: The breeding box has a first mounting slot, a second mounting slot, and a third mounting slot sequentially opened at its upper end. A drain outlet is provided on the bottom side of the breeding box. A drain pipe is provided in the first mounting slot of several breeding boxes, and several drain branch pipes connected to the drain outlet on the bottom side of the upper breeding box are provided on the drain pipe. A shrimp discharge pipe is provided in the second mounting slot of several breeding boxes, and several shrimp discharge branch pipes connected to the shrimp discharge outlet on the bottom side of the upper breeding box are provided on the shrimp discharge pipe. A water inlet pipe is provided in the third mounting slot of several breeding boxes, and several water inlet branch pipes connected to the lower breeding box are provided on the water inlet pipe.

5. The crayfish breeding equipment according to claim 1, characterized in that: The lifting mechanism includes a lifting cylinder, a mounting plate, and hollow shafts. The lifting cylinder is fixed on both sides of the filter box and is connected to the mounting plate for transmission. Two mounting arms are symmetrically arranged at both ends of the mounting plate, which are far apart from each other. The two mounting arms are V-shaped and connected to each other by four hollow shafts. The upper end of the overflow pipe is integrally provided with a guide tube, and the upper end of the guide tube is provided with a sleeve. The hollow shafts are sleeved on the inner wall of the sleeve. The hollow shafts of the upper and lower layers are respectively arranged in the second mounting slots of the corresponding breeding boxes, and the hollow shaft of the bottom layer is located on the bottom side of the upper shrimp discharge pipe.

6. The crayfish breeding equipment according to claim 5, characterized in that: The upper end of the air plate is connected to an air inlet branch pipe, which passes upward through the isolation box and is connected to the sleeve. Several air outlet holes are evenly distributed on the hollow shaft, and the positions of the air outlet holes correspond to the sleeve. One end of the several hollow shafts is connected to the aerator through the main air inlet pipe.

7. The crayfish breeding equipment according to claim 5, characterized in that: The bottom side of the breeding box is provided with a fourth mounting slot and a fifth mounting slot in sequence. The fourth mounting slot and the third mounting slot are arranged opposite to each other, and the fifth mounting slot and the second mounting slot are arranged opposite to each other.

8. A breeding method using the crayfish breeding equipment according to any one of claims 6-7, characterized in that, Includes the following steps: S1. Place the female shrimp waiting to lay eggs in the broodstock box for rearing, and then transfer the female shrimp carrying eggs in the broodstock box into the multi-layer breeding box on the upper side of the broodstock box through the shrimp inlet pipe. The female shrimp are incubated in the breeding box outside the isolation box. During this period, the water inlet pipe continuously supplies water, and the overflow pipe is kept at a high level to continuously overflow and drain water, limiting the liquid level in the breeding box. S2 combines gentle and strong expulsion modes to expel juvenile shrimp: Gentle shrimp discharge mode: Using a high-level overflow method, the gentle water flow generated by the overflow pipe gently overflows and discharges the daily hatching and fragile juvenile shrimp into the rearing tank. Forced drainage mode for shrimp discharge: By using the lifting mechanism to briefly lower the height of the overflow pipe, the water flow area and drainage speed are instantly increased, so as to forcefully discharge shrimp into the breeding tank. The mild mode of shrimp expulsion continues throughout the entire breeding process, while the strong mode of shrimp expulsion avoids the early stage of breeding and periodically carries out strong shrimp expulsion in the middle and late stages of breeding. S3, air-plate actively guides shrimp placement: Precise shrimp collection: In the gentle mode, when shrimp are discharged, the air plate rises to a high position with the overflow pipe, creating an "oxygen-rich bubble flow" area below the overflow port. By utilizing the oxygen-attracting and flow-attracting properties of juvenile shrimp, they are actively attracted to the overflow port for discharge. Bottom Driving: During the strong discharge mode, the air plate descends to a low position along with the overflow pipe, using the air bubbles that penetrate the water to stir the bottom of the tank, driving out the hidden juvenile shrimp, and achieving complete discharge in conjunction with the strong discharge mode.

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