A device for hatching of the fertilized eggs of the rice field eel based on double-acting cylinder

Abstract

The utility model discloses a kind of based on double-acting cylinder's ricefield eel fertilized egg hatching device, it is related to aquaculture equipment technical field, by hatching frame, lifting frame, hatching net, air compressor, PLC controller, air pipe, signal line, two-position five-way solenoid valve composition, lifting frame is located on hatching frame, hatching net is connected in the lower portion of lifting frame and is in hatching barrel, air pipe is connected two-position five-way solenoid valve after from air compressor, then connect double-acting cylinder, signal line connects PLC controller and two-position five-way solenoid valve and then controls movement action.The device can be automated, realize fertilized egg to carry out sustained, uniform lifting, effectively promote dissolved oxygen, prevent water mould, to improve hatching rate.

Description

Technical Field

[0001] This utility model relates to the field of aquaculture equipment technology, specifically to a device for hatching fertilized eel eggs based on a double-acting cylinder. Background Technology

[0002] The swamp eel is a high-value aquaculture species. The hatching of its fertilized eggs is a crucial step in the farming process. Under natural conditions, fertilized swamp eel eggs typically hatch in foam nests expelled by the parent eels. The parent eels create micro-flows in the nest through body movements, providing ample dissolved oxygen for the fertilized eggs and preventing mold growth, thus significantly improving the hatching rate.

[0003] Currently, the factory-scale artificial hatching of fertilized eel eggs mostly uses still water incubation, which involves placing the fertilized eggs in static incubation net cages or trays. This method has obvious drawbacks: still water can easily lead to oxygen deficiency in the fertilized eggs; dirt can easily adhere to the surface of the fertilized eggs, promoting the growth of water mold; and the eggs pile up together, resulting in uneven dissolved oxygen and a low hatching rate.

[0004] Therefore, there is an urgent need to develop a device that can automatically simulate natural water flow and effectively improve the hatching rate of fertilized eel eggs. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a hatching device for fertilized eel eggs based on a double-acting cylinder. This device is automated, enabling continuous and uniform lifting and lowering of fertilized eggs, effectively increasing dissolved oxygen and preventing water mold, thereby improving the hatching rate.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A hatching device for fertilized eel eggs based on a double-acting cylinder consists of a hatching rack, a lifting rack, a hatching net, an air compressor, a PLC controller, an air pipe, a signal line, and a two-position five-way solenoid valve. The lifting rack is located on the hatching rack, and the hatching net is connected below the lifting rack and inside the hatching tank. The air pipe goes out from the air compressor and connects to the two-position five-way solenoid valve, and then connects to the double-acting cylinder. The signal line connects the PLC controller to the two-position five-way solenoid valve to control the movement.

[0007] The incubation rack includes a base, an incubation bucket, and a cylinder fixing block. The incubation bucket is located on the base, and the cylinder fixing block is welded and fixed to the center of the base.

[0008] The lifting frame includes a crossbeam and a double-acting cylinder, with the center of the crossbeam connected to the double-acting cylinder.

[0009] The incubation net includes a screen, connecting rods, and springs. The bottom of the screen has a porous structure, and a 20-60 mesh screen is optional. Three connecting rods are distributed at 270°, with an L-shaped bottom. One end of each connecting rod is fixed to a crossbeam, and a spring is fitted onto the connecting rod. The opening faces the operator, and the outer edge of the screen rests on the L-shape of the connecting rod, held in place by the spring to prevent movement.

[0010] Furthermore, the center of the crossbeam is welded and fixed to the double-acting cylinder, ensuring the stability of the lifting and lowering movement and preventing the screen from tilting when it rises and falls in the water. Furthermore: the incubation tub can be made of transparent material to facilitate observation of the internal water level and incubation progress; Furthermore, depending on the actual situation, different models of cylinders can be selected to manage multiple incubation racks.

[0011] During operation, the device is set up according to its location. With the supporting water and air supply systems in place, a small flow of tap water is injected into the incubation tank. The outer edge of the screen is placed on the L-shaped connecting rod, and a spring presses down on the outer edge of the screen to fix it in place. The device is then started, and the air compressor begins to generate gas. A timer is set in the PLC controller, such as 3 minutes for each action. After the timer expires, the PLC controller sends an action signal to the two-position five-way solenoid valve via a signal line. The two-position five-way solenoid valve actuates, switching the gas direction in the air pipe. The double-acting cylinder extends, causing the crossbeam and incubation screen to move upwards, slowly lifting the fertilized eggs. After 3 minutes, the PLC controller generates an action signal, the two-position five-way solenoid valve actuates, switching the gas direction in the air pipe again. The double-acting cylinder retracts, causing the crossbeam and incubation screen to move downwards, causing the fertilized eggs to sink. This process repeats, with the fertilized eggs moving up and down, simulating natural movement.

[0012] Compared with the prior art, the present invention has the following beneficial effects: High degree of automation, saving time and labor: The cylinder is automatically controlled by the PLC controller, eliminating the need for frequent manual operation and greatly reducing labor intensity.

[0013] The incubation environment is excellent: the fertilized eggs in the incubation net are continuously and evenly raised and lowered, which effectively increases the movement of the fertilized eggs, increases the contact with fresh water, improves the dissolved oxygen exchange efficiency, and can effectively wash the surface of the fertilized eggs to prevent the growth of water mold.

[0014] Adjustable parameters and wide applicability: Additional cylinders can be added, thereby increasing the number of controlled hatching screens and improving work efficiency.

[0015] High hatching rate: By improving dissolved oxygen in the water, the core problem of still-water hatching is solved, thus significantly improving the hatching rate of fertilized eel eggs and the survival rate of juvenile eels. The hatching net can also preferably be a stainless steel flour sieve with a bottom of 10-40 mesh to reduce mold growth. Attached Figure Description

[0016] Figure 1 An axial view of a fertilized eel egg incubation device based on a double-acting cylinder; Figure 2 A front view of a device for incubating fertilized eel eggs based on a double-acting cylinder; Figure 3 A schematic diagram of an incubation net for an eel fertilized egg incubation device based on a double-acting cylinder; Legend: 1. Hatching rack; 2. Lifting frame; 3. Hatching net; 4. Air compressor; 5. PLC controller; 6. Air pipe; 7. Signal line; 8. Two-position five-way solenoid valve; 11. Base; 12. Hatching bucket; 13. Cylinder fixing block; 21. Crossbeam; 22. Double-acting cylinder; 31. Screen; 32. Connecting rod; 33. Spring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Example 1 Please see Figure 1-3 When in operation, the device is set up according to the position. Under the matching water supply pipe and air supply pipe system, a small flow of tap water is injected into the incubation tank 12. The outer edge of the screen 31 is placed on the L-shape of the connecting rod 32. The spring 33 presses the outer edge of the screen 31 to fix the screen 31. The device is started and the air compressor 4 starts to work and generate gas. A timer is set in the PLC controller 5, such as 3 minutes for each action. After the timer expires, the PLC controller 5 transmits an action signal to the two-position five-way solenoid valve 8 via signal line 7. The two-position five-way solenoid valve 8 actuates, switching the gas direction in the air pipe 6. The double-acting cylinder 22 extends, thereby driving the crossbeam 21 and the incubation net 3 to move upward, and the fertilized eggs are slowly lifted upward. After 3 minutes, the PLC controller 5 generates an action signal, the two-position five-way solenoid valve 8 actuates, switching the gas direction in the air pipe 6. The double-acting cylinder 22 retracts, thereby driving the crossbeam 21 and the incubation net 3 to move downward, and the fertilized eggs sink downward. This process is repeated, and the fertilized eggs move up and down, simulating natural movement.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hatching device for fertilized eel eggs based on a double-acting cylinder, comprising a hatching rack (1), a lifting rack (2), a hatching net (3), an air compressor (4), a PLC controller (5), an air pipe (6), a signal line (7), and a two-position five-way solenoid valve (8). The lifting rack (2) is located on the hatching rack (1), and the hatching net (3) is connected below the lifting rack (2) and is located inside the hatching bucket (12). The air pipe (6) is connected to the two-position five-way solenoid valve (8) after exiting the air compressor (4), and then connected to the double-acting cylinder (22). The signal line (7) connects the PLC controller (5) to the two-position five-way solenoid valve (8) to control the movement.

2. The fertilized eel egg hatching device based on a double-acting cylinder according to claim 1, wherein the hatching rack (1) includes a base (11), a hatching bucket (12), and a cylinder fixing block (13), the hatching bucket (12) is located on the base (11), and the cylinder fixing block (13) is welded and fixed to the center of the base (11).

3. The fertilized eel egg hatching device based on a double-acting cylinder according to claim 1, wherein the lifting frame (2) includes a crossbeam (21) and a double-acting cylinder (22), and the center of the crossbeam (21) is connected to the double-acting cylinder (22).

4. The hatching device for fertilized eel eggs based on a double-acting cylinder according to claim 1, wherein the hatching net (3) includes a screen (31), a connecting rod (32), and a spring (33). The bottom of the screen (31) is a porous structure, and the three connecting rods (32) are distributed at 270° with an L-shaped bottom. One end of the connecting rod (32) is fixed on the crossbeam (21), and the spring (33) is sleeved on the connecting rod (32). The opening direction faces the operator, and the outer edge of the screen (31) is placed on the L-shape of the connecting rod (32). The spring (33) presses it down to prevent it from moving.

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