Cold region crayfish water spray seedling cultivation device

Abstract

The utility model provides a cultivation device for crayfish fry in cold regions, and belongs to the technical field of aquaculture. The problem that an existing crayfish breeding device is high in cost is solved. The greenhouse comprises a greenhouse body, a soil pond, an oxygenation system and a water inlet and drainage system, the soil pond is arranged at the bottom in the greenhouse body, the oxygenation system and the water inlet and drainage system are installed in the greenhouse body, the oxygenation system comprises an oxygen disc, a main gas conveying pipeline and a flow dividing pipe, the main gas conveying pipeline is connected with the oxygen disc, the oxygen disc is installed in the greenhouse body, and the flow dividing pipe is connected with the main gas conveying pipeline. And a plurality of shunt pipes are uniformly mounted on the main gas pipeline. The method is mainly used for cultivating the crayfish fry.

Description

Technical Field

[0001] This utility model belongs to the field of aquaculture technology, and in particular relates to a device for cultivating crayfish fry in cold regions. Background Technology

[0002] Crayfish, scientifically known as Procambarus clarkii, belongs to the phylum Arthropoda, class Crustacea, order Decapoda, family Procambaridae, and genus Procambarus. It is one of the most widely farmed and economically valuable freshwater shrimp species in my country, ranking fourth in terms of production among freshwater aquaculture species. However, due to the limitations of cold climate conditions, crayfish cannot overwinter and reproduce naturally, and the shortage of seedlings is the main bottleneck restricting the development of the cold-region crayfish industry.

[0003] To address the issue of crayfish seedling supply, Northeast China has attempted to purchase large-sized seedlings from major crayfish-producing areas in the south. While the survival rate of the seedlings is high during transportation, it drops significantly after being released into ponds, failing to meet the demands of large-scale farming. Furthermore, local efforts have been made to build high-standard, insulated greenhouses for self-breeding. Although these experiments have achieved some success, the high construction and operating costs have prevented widespread adoption. Therefore, a low-cost, high-efficiency solution is urgently needed to overcome the technical bottleneck of crayfish seedling shortages in cold regions and promote the sustainable development of the industry. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model proposes a cold-region crayfish seedling cultivation device, aiming to solve the problems of low survival rate, high device cost, and difficulty in promotion of existing crayfish cultivation methods.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A device for cultivating water fry of crayfish in cold regions includes a greenhouse, an earthen pond, an aeration system, and an inlet and drainage system. The earthen pond is located at the bottom of the greenhouse, and the aeration system and the inlet and drainage system are installed inside the greenhouse.

[0007] Furthermore, the oxygenation system includes an oxygen disc, a Roots blower, a main gas supply pipeline, and branch pipes. Several branch pipes are evenly installed on the main gas supply pipeline, and an oxygen disc is installed at the outlet of each branch pipe. The oxygen disc is located inside the earthen pool. The main gas supply pipeline is connected to the Roots blower, which is installed inside the greenhouse.

[0008] Furthermore, ventilation curtains are installed on both sides of the greenhouse, and the ventilation curtains are connected to the film rolling mechanism.

[0009] Furthermore, the film rolling mechanism includes a crossbar and a film rolling device, with the ventilation curtain rolled onto the crossbar and the crossbar connected to the film rolling device.

[0010] Furthermore, the top of the greenhouse is equipped with a sunshade curtain, and both sides of the sunshade curtain are connected to a folding mechanism.

[0011] Furthermore, the folding mechanism includes a lead screw, a frame, and sliders. Two sliders are symmetrically installed inside the frame. The lead screw is installed inside the frame, and the two sliders are threadedly connected to the lead screw. The lead screw has double reverse-rotation threads on both sides.

[0012] Furthermore, the lead screw is connected to the motor.

[0013] Furthermore, sliding doors are installed at both ends of the greenhouse.

[0014] Furthermore, the water inlet and drainage system includes a water inlet pipe and a water outlet pipe, which are respectively installed at the water inlet and the water outlet of the greenhouse.

[0015] Furthermore, the greenhouse is supported by support pipes.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This utility model adopts a simple greenhouse structure and combines automated shading and ventilation design, which reduces construction and operation and maintenance costs.

[0018] 2. This utility model maintains dissolved oxygen and ecological balance in the water by integrating an oxygenation system and an aquatic plant planting module, providing shrimp larvae with ample attachment space and shelter, and significantly improving their environmental adaptability and survival rate.

[0019] 3. The modular structure design of this utility model facilitates large-scale promotion and is especially suitable for cold climate regions, providing efficient and flexible technical support for crayfish farming. Attached Figure Description

[0020] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0021] Figure 1 This is a schematic diagram of the structure of a cold-region crayfish fry cultivation device according to the present invention. Figure 1 ;

[0022] Figure 2 Schematic diagram of the installation of the crossbar and film winding machine

[0023] Figure 3 This is an internal schematic diagram of a cold-region crayfish seedling cultivation device according to the present invention;

[0024] Figure 4This is a schematic diagram of the installation of the sunshade curtain and its folding mechanism.

[0025] In the picture:

[0026] 1-Greenhouse, 2-Earth pool, 3-Diverter pipe, 4-Oxygen tray, 5-Roots blower, 6-Main gas pipeline, 7-Water inlet pipe, 8-Drainage pipe, 9-Sliding door, 10-Horizontal bar, 11-Support pipe, 12-Film rolling device, 13-Screw rod, 14-Shading curtain, 15-Frame, 16-Slider, 17-Motor. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present utility model can be combined with each other, and the described embodiments are only some embodiments of the present utility model, not all embodiments.

[0028] Detailed Implementation Method 1: See Figure 1-3 This embodiment describes a device for cultivating crayfish fry in cold regions, characterized by comprising a greenhouse 1, an earthen pond 2, an aeration system, and an inlet / outlet drainage system. The earthen pond 2 is located at the bottom of the greenhouse 1. The aeration system and the inlet / outlet drainage system are installed inside the greenhouse 1. The aeration system includes an oxygen disc 4, a Roots blower 5, a main air supply pipe 6, and branch pipes 3. Several branch pipes 3 are evenly installed on the main air supply pipe 6, and an oxygen disc 4 is installed at the outlet of each branch pipe 3. Oxygen tray 4 is located inside earthen pool 2. The main gas supply pipe 6 is connected to Roots blower 5. Roots blower 5 is installed inside greenhouse 1. Ventilation curtains are installed on both sides of greenhouse 1. The ventilation curtains are connected to film rolling mechanism. The film rolling mechanism includes crossbar 10 and film rolling device 12. The ventilation curtains are rolled up on the crossbar 10. The crossbar 10 is connected to film rolling device 12. A sunshade curtain 14 is installed on the top of greenhouse 1. Both sides of the sunshade curtain 14 are connected to folding mechanism.

[0029] The folding mechanism includes a lead screw 13, a frame 15, and sliders 16. Two sliders 16 are symmetrically installed inside the frame 15. The lead screw 13 is installed inside the frame 15. The two sliders 16 are threadedly connected to the lead screw 13. The lead screw 13 has double reverse-rotation threads on both sides. The lead screw 13 is connected to a motor 17.

[0030] Sliding doors 9 are installed at both ends of the greenhouse 1.

[0031] Greenhouse 1 is constructed with a rectangular frame made of lightweight steel. Ventilation curtains 8 are installed via side channels 7, and a mesh shade curtain 14 is installed via a top channel 10. An earthen pond 2, approximately 1.2 meters deep, is dug at the bottom of greenhouse 1. Cold-resistant aquatic plants such as Elodea are planted at the bottom of the pond. The main air supply pipe 6 is laid along the pond wall, with branch pipes 3 spaced 2 meters apart, each end connected to an oxygen tray 4 submerged at the bottom. The water inlet pipe connects to an external water source and is equipped with a filtration system. The drain pipe is located in a low-lying area of ​​the earthen pond, and the water level is controlled by a valve. After the shrimp larvae are released, the opening of the shade curtains is adjusted according to the water temperature. The aeration system is activated for 4-6 hours daily, and the water is changed regularly while monitoring water quality parameters. Using this device, 100,000 shrimp larvae were released, and the rearing period was 30 days. Results showed a survival rate of 85%, 40% higher than the traditional method, and a 30% reduction in energy costs, validating the practicality and economy of this device.

[0032] The specific embodiments of this utility model disclosed above are merely illustrative of the present utility model. These specific embodiments do not exhaustively describe all details, nor do they limit the utility model to only the described embodiments. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it.

Claims

1. A device for cultivating crayfish fry in cold regions, characterized in that: The system includes a greenhouse (1), an earthen pool (2), an oxygenation system, and an inlet / outlet drainage system. The bottom of the greenhouse (1) is equipped with an earthen pool (2). The oxygenation system and the inlet / outlet drainage system are installed inside the greenhouse (1). The oxygenation system includes an oxygen disc (4), a Roots blower (5), a main gas pipeline (6), and branch pipes (3). Several branch pipes (3) are evenly installed on the main gas pipeline (6), and an oxygen disc (4) is installed at the outlet of each branch pipe (3). 4) The oxygen tray (4) is located in the earthen pool (2). The main gas pipeline (6) is connected to the Roots blower (5). The Roots blower (5) is installed in the greenhouse (1). Ventilation curtains are installed on both sides of the greenhouse (1). The ventilation curtains are connected to the film rolling mechanism. The film rolling mechanism includes a crossbar (10) and a film rolling device (12). The ventilation curtain is rolled up on the crossbar (10). The crossbar (10) is connected to the film rolling device (12).

2. The device for cultivating Procambarus clarkii according to claim 1, wherein: The top of the greenhouse (1) is equipped with a sunshade curtain (14), and both sides of the sunshade curtain (14) are connected to the folding mechanism.

3. The device for cultivating Procambarus clarkii according to claim 2, wherein: The folding mechanism includes a lead screw (13), a frame (15), and sliders (16). Two sliders (16) are symmetrically installed inside the frame (15). The lead screw (13) is installed inside the frame (15). The two sliders (16) are threadedly connected to the lead screw (13). The lead screw (13) has double reverse spiral threads on both sides.

4. The device for cultivating Procambarus clarkii according to claim 3, wherein: The lead screw (13) is connected to the motor (17).

5. The device for cultivating Procambarus clarkii according to claim 1, wherein: Sliding doors (9) are provided at both ends of the greenhouse (1).

6. The device for cultivating Procambarus clarkii according to claim 1, wherein: The water inlet and drainage system includes an inlet pipe (7) and a drain pipe (8), which are respectively installed at the water inlet and the drain outlet of the greenhouse (1).

7. The device for cultivating Procambarus clarkii according to claim 1, wherein: The greenhouse (1) is supported by a support pipe (11).

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