A high-density lobster postlarvae marking device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI FENGHAO AGRI TECH CO LTD
- Filing Date
- 2025-07-18
- Publication Date
- 2026-07-07
AI Technical Summary
Traditional lobster seedling ponds suffer from problems such as high cannibalization rate, uneven oxygenation, and low survival rate, and frequent transfer of seedlings causes mechanical damage.
The cage features a combination of multi-layered perching netting, nano-aeration components, and heating elements, providing a three-dimensional climbing space, uniform oxygenation, and a constant temperature environment. The multi-layered perching netting reduces fighting, while the nano-aeration pipes create an upward water circulation, and the bottom heating elements maintain a suitable water temperature.
It reduces the residual food rate to below 5%, increases the survival rate to over 90%, increases the utilization rate per unit area by 3 times, improves the uniformity of dissolved oxygen by 80%, reduces energy consumption by 40%, and reduces the rate of mechanical damage.
Smart Images
Figure CN224460897U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aquaculture facilities technology, specifically to a high-density lobster seedling raising device. Background Technology
[0002] Nursery ponds are mainly used to temporarily raise lobster larvae (such as P5 larvae, with a body length of 0.3-0.5cm) in a suitable environment for a period of time (usually 20-30 days). By feeding them special feed, the larvae grow to a certain size (such as a body length of 3-4.5cm) and are then transferred to grow-out ponds for further rearing. This process helps to improve the survival rate of larvae and the efficiency of rearing.
[0003] Traditional lobster seedling ponds are usually open-air earthen ponds or cement ponds. The planar structure of the pond causes the seedlings to compete for habitat, resulting in a cannibalism rate of over 30%. Uneven oxygenation at the bottom of the pond leads to the accumulation of uneaten food and feces, causing ammonia nitrogen levels to exceed the standard. The survival rate of seedlings during the molting period is only 60%-70%, which depends on the ambient temperature. Frequent transfer of seedlings causes mechanical damage. Utility Model Content
[0004] This invention provides a high-density lobster larvae nursery device, which can solve the problems of high cannibalization rate, uneven oxygenation and low survival rate in traditional lobster nursery ponds.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A high-density lobster larvae raising device, comprising:
[0007] The box body has an opening at the top and a drain valve at the bottom.
[0008] A cage, which is suspended above the box, has a mesh density of 20-40 mesh.
[0009] Multiple layers of perching netting are evenly distributed from top to bottom inside the hanging cage, and one edge of each perching netting is fixed to the inner wall of the hanging cage.
[0010] A nano-oxygenation component is located at the bottom center of the chamber and is connected to an external air pump via an air supply pipe.
[0011] A heating component is installed inside the tank to control the water temperature inside the tank to maintain at 28-30℃.
[0012] As a further embodiment of this utility model: the nano oxygenation component includes a mesh frame fixedly disposed at the center of the bottom of the box and a nano aeration tube coiled within the mesh frame, the nano aeration tube being connected to an external air pump via an air delivery pipe.
[0013] As a further embodiment of this utility model: the heating assembly includes an electric heating plate attached to the bottom of the box and a heating strip surrounding the inner side wall of the box, and both the electric heating plate and the box are electrically connected to a temperature controller outside the box.
[0014] As a further embodiment of this utility model: a cross support frame is provided on the top of the box, and the cage is suspended below the cross support frame by a hook.
[0015] As a further embodiment of this utility model: the hook component includes a detachable hook head fixed to the top of the intersection of the cross support frame, an automatic telescopic boom fixed to the bottom of the hook head, the automatic telescopic boom being inserted into the through hole at the intersection of the cross support frame, and the four corners of the top of the cage being fixedly connected to the automatic telescopic boom via ropes.
[0016] As a further aspect of this utility model: the height of the cage is adjustable, with an adjustment range of 10cm in increments.
[0017] As a further embodiment of this utility model: the perching net is a rough-surfaced PP plastic net, and 4-6 layers of the perching net are arranged inside the hanging cage, with a layer spacing of 10-15cm.
[0018] As a further embodiment of this utility model: the nano-aeration tube is coiled into a concentric circle structure with a diameter of 20-30cm and a pore density of 50-80 pores / meter.
[0019] As a further embodiment of this utility model, the bottom mesh plate of the cage is a detachable structure.
[0020] As a further embodiment of this utility model: the top opening of the box is covered with a light shield, and the light transmittance of the light shield is ≤30%.
[0021] The beneficial effects of this utility model are:
[0022] (1) This utility model provides a biomimetic habitat by evenly arranging multiple layers of habitat netting in the hanging cage, which forms a three-dimensional climbing space in the hanging cage, reducing the fighting of crayfish seedlings, reducing the cannibalization rate by less than 5%, achieving a survival rate of ≥90%, and increasing the utilization rate per unit area by more than 3 times.
[0023] (2) This utility model sets up a heating component and a nano oxygenation component in the tank. Through bottom oxygenation and heating synergy, the nano aeration pipe continuously aerates to form a bottom-up water flow circulation. Combined with the bottom heating component, it generates uniform heat convection, maintains the water temperature in the tank at 28-30℃±0.5℃, avoids thermoclines, maintains dissolved oxygen at 6-8mg / L, increases dissolved oxygen uniformity by 80%, and reduces energy consumption by 40%. Attached Figure Description
[0024] The present invention will be further described below with reference to the accompanying drawings.
[0025] Figure 1 This is a schematic diagram of the structure of a high-density lobster seedling raising device according to this utility model;
[0026] Figure 2 This is a cross-sectional schematic diagram of a high-density lobster seedling raising device according to this utility model;
[0027] Figure 3 This is a top view schematic diagram of the box structure of this utility model.
[0028] In the diagram: 1. Box body; 2. Drain valve; 3. Hanging cage; 4. Perching net; 5. Nano oxygenation component; 51. Net frame; 52. Nano aeration pipe; 6. Heating component; 61. Electric heating plate; 62. Heating belt; 63. Thermostat; 7. Cross support frame; 71. Through hole; 8. Hook component; 81. Hook head; 82. Automatic telescopic boom; 9. Sunshade. Detailed Implementation
[0029] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0030] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model.
[0031] Furthermore, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0032] Please see Figure 1-3 As shown, this utility model embodiment provides a high-density lobster seedling raising device, including a box 1, a hanging cage 3, a habitat net 4, a nano oxygenation component 5, a heating component 6, and a light shield 9.
[0033] Please see Figure 2 As shown, the box 1 is made of food-grade PE (polyethylene) or PP (polypropylene) material, with a capacity of 800-1500L. The top of the box 1 has an opening, covered by a light-shielding cover 9 with a light transmittance of ≤30%. A drain valve 2 is located at the bottom of the box 1. The hanging cage 3 is suspended inside the upper part of the box 1. The mesh density of the hanging cage 3 is 20-40 mesh, which prevents lobster larvae from escaping while allowing food particles to pass through. Inside the hanging cage 3, 4-6 layers of perching netting 4 are evenly distributed from top to bottom, with a layer spacing of 10-15cm. One edge of the perching netting 4 is fixed to the inner wall of the hanging cage 3. The perching netting 4 is a rough-surfaced PP plastic mesh, taut and laid within a rigid frame to form the perching netting 4. The multi-layered perching net 4 forms a three-dimensional climbing space within the hanging cage 3, providing a biomimetic habitat, reducing competition among lobster larvae, lowering the cannibalism rate by less than 5%, achieving a survival rate of ≥90%, and increasing the utilization rate per unit area by more than 3 times.
[0034] Please see Figure 2 As shown, the nano-oxygenating component 5 is located at the bottom center of the tank 1. The nano-oxygenating component 5 includes a mesh frame 51 fixedly installed at the bottom center of the tank 1 and a nano-aeration tube 52 coiled inside the mesh frame 51. The nano-aeration tube 52 is connected to an external air pump through an air supply pipe. The nano-aeration tube 52 is coiled into a concentric circle structure with a diameter of 20-30cm. The air pore density on the nano-aeration tube 52 is 50-80 pores / meter. The external air pump delivers gas to the nano-aeration tube 52 through the air supply pipe. The nano-aeration tube 52 continuously aerates the water, maintaining the dissolved oxygen level at 6-8mg / L, and generating an upward water flow inside the tank 1.
[0035] Please see Figure 2 As shown, the heating component 6 is installed inside the housing 1. The heating component 6 includes an electric heating plate 61 attached to the bottom of the housing 1 and a heating band 62 surrounding the inner side wall of the housing 1. The electric heating plate 61 completely covers the bottom of the housing 1, and the heating band 62 surrounds the lower 1 / 3 area of the side wall in the height direction. The electric heating plate 61 and the housing 1 are electrically connected to a thermostat 63 outside the housing 1. The thermostat 63 controls the electric heating plate 61 and the heating band 62 to maintain the water temperature inside the housing 1 at 28-30℃±0.5℃.
[0036] Meanwhile, through bottom oxygenation and heating synergy, the nano-aeration pipe 52 forms a bottom-up water circulation, which, together with the bottom heating component 6, generates uniform thermal convection, avoids thermocline, and also increases dissolved oxygen uniformity by 80% and reduces energy consumption by 40%.
[0037] Please see Figure 2As shown, a cross-shaped support frame 7 is installed on the top of the housing 1, and the cage 3 is suspended below the cross-shaped support frame 7 by a hook 8. The hook 8 includes a detachable hook head 81 fixed to the top of the intersection of the cross-shaped support frame 7, with the bottom of the hook head 81 close to the top of the intersection of the cross-shaped support frame 7. An automatic telescopic rod 82 is fixed to the bottom of the hook head 81, and the automatic telescopic rod 82 is inserted into the through hole 71 at the intersection of the cross-shaped support frame 7. The four corners of the top of the cage 3 are fixedly connected to the automatic telescopic rod 82 by ropes. The automatic telescopic rod 82 allows the height of the cage 3 to be adjusted in increments of 10cm.
[0038] It should be noted that the bottom mesh panel of hanging cage 3 is a detachable structure. The bottom mesh panel can be detachably installed at the bottom of hanging cage 3 using conventional methods such as hinges, screws, or clips. By removing the bottom mesh panel of hanging cage 3 to transfer larger seedlings, the seedling separation efficiency is increased by 3 times, and the mechanical damage rate is less than 3%.
[0039] A method for raising lobster juveniles using a high-density seedling raising device according to this invention:
[0040] Stocking: Stock newly hatched lobster larvae into the hanging cage at a density of 200-300 larvae / L;
[0041] Feeding: Feed micro-particle feed 4-6 times a day, allowing it to settle naturally through the 3-mesh hanging cage;
[0042] Oxygenation and temperature control: The nano-aeration tube 52 continuously aerates the dissolved oxygen at 6-8 mg / L. The electric heating plate 61 and heating belt 62 are controlled by the thermostat 63 to maintain the water temperature in the tank 1 at 28-30℃.
[0043] Cleaning: Open the drain valve 2 at the bottom of the tank 1 every 48 hours to drain the sediment;
[0044] Transplanting: Every 15 days, raise the height of cage 3 by 10cm, remove the bottom mesh plate of cage 3, and transfer the larger seedlings.
[0045] The preferred embodiments of this utility model have been described in detail above and should not be considered as limiting the scope of this utility model. All equivalent changes and improvements made within the scope of the claims of this utility model should still fall within the patent coverage of this utility model.
Claims
1. A high-density lobster larvae raising device, characterized in that, include: Box (1), the box (1) has an opening at the top and a drain valve (2) at the bottom; A hanging cage (3) is suspended in the upper part of the box (1), and the mesh density of the hanging cage (3) is 20-40 mesh. Multiple layers of perching netting (4) are evenly distributed from top to bottom inside the hanging cage (3), and one edge of the perching netting (4) is fixed to the inner wall of the hanging cage (3); Nano oxygenation component (5) is located at the bottom center of the box (1) and is connected to an external air pump through an air supply pipe; Heating component (6) is disposed inside the tank (1) and is used to control the water temperature inside the tank (1) to maintain at 28-30℃.
2. The high-density lobster larvae raising device according to claim 1, characterized in that: The nano oxygenation component (5) includes a mesh frame (51) fixedly installed in the center of the bottom of the box (1) and a nano aeration tube (52) coiled in the mesh frame (51). The nano aeration tube (52) is connected to an external air pump through an air supply pipe.
3. The high-density lobster larvae raising device according to claim 1, characterized in that: The heating assembly (6) includes an electric heating plate (61) attached to the bottom of the box (1) and a heating band (62) surrounding the inner side wall of the box (1). The electric heating plate (61) and the box (1) are electrically connected to a thermostat (63) outside the box (1).
4. The high-density lobster larvae raising device according to claim 1, characterized in that: The top of the box (1) is provided with a cross support frame (7), and the cage (3) is suspended below the cross support frame (7) by a hook (8).
5. A high-density lobster larvae raising device according to claim 4, characterized in that: The hook component (8) includes a detachable hook head (81) fixed to the top of the intersection of the cross support frame (7). An automatic telescopic boom (82) is fixed to the bottom of the hook head (81). The automatic telescopic boom (82) is inserted into the through hole (71) at the intersection of the cross support frame (7). The top four corners of the cage (3) are fixedly connected to the automatic telescopic boom (82) by ropes.
6. A high-density lobster larvae raising device according to claim 5, characterized in that: The height of the cage (3) is adjustable, with an adjustment range of 10cm per increment.
7. A high-density lobster larvae raising device according to claim 1, characterized in that: The perching net (4) is a rough-surfaced PP plastic net. The cage (3) is equipped with 4-6 layers of the perching net (4) with a layer spacing of 10-15cm.
8. A high-density lobster larvae raising device according to claim 2, characterized in that: The nano-aeration tube (52) is coiled into a concentric circle structure with a diameter of 20-30cm and a pore density of 50-80 pores / meter.
9. A high-density lobster larvae raising device according to claim 1, characterized in that: The bottom mesh plate of the cage (3) is a detachable structure.
10. A high-density lobster larvae raising device according to any one of claims 1-9, characterized in that: The top opening of the box (1) is covered with a light shield (9), and the light transmittance of the light shield (9) is ≤30%.