A screening device for fish fry farming

Abstract

The utility model relates to aquatic breeding technical field discloses a screening device for fry culture, including support frame, the support frame bottom fixedly connected with base, support frame inner chamber fixedly connected with work bin, the work bin inner chamber is provided with drainage component, and the screening component includes the limiting rod fixedly connected in the work bin inner chamber, the motor fixedly connected in the limiting rod top and the pivot rotationally connected in the work bin inner chamber bottom, and the screening component is used for guiding the swimming direction of fry. The utility model discloses an improved drainage component, dynamic water flow guiding design, and the motor drives the pivot to drive the stirring vane to form the gentle water flow disturbance, effectively avoids the physical damage of traditional mechanical screening to fry. Multistage screen cloth adopts the inclined layered arrangement, and the fixed support of limiting rod cooperates, so that fry completes the grading screening under the action of natural water flow, and the whole process does not need forced extrusion or friction.

Description

Technical Field

[0001] This utility model relates to the field of aquaculture technology, and in particular to a screening device for fish fry rearing. Background Technology

[0002] Fish fry refer to small fish that have just hatched. During the breeding and raising process, because different fish grow at different rates, it is necessary to regularly screen each batch of fish fry and raise them separately according to different sizes. This can improve the survival rate of fish fry and prevent large fish from preying on small fish or attacking each other, thus avoiding property loss.

[0003] Regarding the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: Current fish fry screening equipment generally suffers from serious mechanical damage to fish fry during operation. Some commercially available equipment generates excessive mechanical vibration amplitude during operation, causing direct friction and collision between the screen and the fish fry's body surface, which can easily cause scale loss and damage to the body surface mucosa. Fish fry are prone to getting stuck in the mechanical gaps during transportation, resulting in squeezing injuries. This is especially true for fish fry in the early development stage, whose body surface is delicate and bones are fragile. The rigid sorting mechanism used in existing equipment often causes irreversible mechanical damage, which seriously affects the survival rate and growth performance of fish fry in the later stages.

[0004] To address these issues, we provide a screening device for fish fry rearing. Utility Model Content

[0005] The technical problem to be solved by this invention is that the existing technology has the disadvantage of mechanically damaging fish fry. To address this, we propose a screening device for fish fry farming.

[0006] To achieve the above objectives, this application adopts the following technical solution: a screening device for fish fry farming, comprising a support frame, a base fixedly connected to the bottom of the support frame, and a working chamber fixedly connected to the inner cavity of the support frame; the inner cavity of the working chamber is provided with a flow guiding component, the screening component including a limiting rod fixedly connected to the inner cavity of the working chamber, a motor fixedly connected to the top of the limiting rod, and a rotating shaft rotatably connected to the bottom of the inner cavity of the working chamber, the screening component being used to guide the swimming direction of the fish fry; the inner cavity of the working chamber is provided with a collection component, the collection component including a first screen fixedly connected to the bottom of the inner cavity of the working chamber, a stirring blade fixedly connected to the rotating surface, and a discharge port opened at the bottom of the inner cavity of the working chamber, the collection component being used to collect the screened material.

[0007] Preferably, a cover is fixedly connected to the top of the working chamber, and a feed inlet is provided on the top of the cover.

[0008] Preferably, a temperature-regulating water tank is provided on the top of the compartment cover, and the input end of the temperature-regulating water tank is connected to a water inlet pipe.

[0009] Preferably, the input end of the temperature-regulating water tank is connected to a water supply pipe, the output end of the water supply pipe is connected to an annular water tank, and the bottom of the annular water tank is connected to a nozzle.

[0010] Preferably, a second screen is fixedly connected to the surface of the limiting rod, and a third screen is fixedly connected to the surface of the limiting rod.

[0011] Preferably, a fourth screen is fixedly connected to the surface of the limiting rod, and a receiving box is provided on the top of the base.

[0012] Preferably, a valve is installed on the surface of the discharge port, and the valve is used to control the flow rate of the discharge port.

[0013] The technical effects and advantages of this utility model are as follows: 1. This utility model, through an improved flow guiding component and dynamic water flow guidance design, uses a motor-driven rotating shaft to generate gentle water flow disturbances with stirring blades, effectively avoiding physical damage to fish fry caused by traditional mechanical screening. The multi-stage screen adopts an inclined layered arrangement, combined with the fixed support of the limiting rod, allowing the fish fry to complete the grading and screening under the action of natural water flow. The entire process does not require forced squeezing or friction. This structure can adjust the water flow intensity according to the characteristics of different fish fry varieties, ensuring screening efficiency while maximizing the protection of the physiological health of the fish fry. Compared with traditional vibrating screens, this guided screening is more in line with the natural behavioral characteristics of fish fry and significantly reduces stress response during the screening process.

[0014] 2. This utility model achieves an efficient and continuous screening and collection process through an improved collection component. The spiral arrangement of the stirring blades promotes the flow of fish fry, and the adjustable discharge valve enables precise collection control. The adjustable design of the discharge port ensures the stability of the collection process. This component is particularly suitable for high-value fish fry varieties that are sensitive to damage, and it greatly improves operational efficiency while ensuring screening quality. Attached Figure Description

[0015] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a three-dimensional diagram of a screening device for fish fry rearing.

[0016] Figure 2 This is a schematic diagram of the surface structure of the second screen in a screening device for fish fry farming.

[0017] Figure 3 This is a schematic diagram of the surface structure of the rotating shaft in a screening device for fish fry farming.

[0018] Figure 4This is a schematic diagram of the surface structure of a limiting rod in a screening device for fish fry farming.

[0019] Figure 5 This is a schematic diagram of the surface structure of the temperature-regulating water tank in a screening device for fish fry rearing.

[0020] Legend: 1. Support frame; 2. Base; 3. Working chamber; 4. Limiting rod; 5. Motor; 6. Rotating shaft; 7. First screen; 8. Agitator blade; 9. Discharge port; 10. Chamber cover; 11. Feed inlet; 12. Temperature regulating water tank; 13. Water inlet pipe; 14. Water delivery pipe; 15. Annular water tank; 16. Nozzle; 17. Second screen; 18. Third screen; 19. Fourth screen; 20. Receiving box; 21. Valve. Detailed Implementation

[0021] Based on the technical solution of this utility model, without changing the essential spirit of this utility model, those skilled in the art can propose various interchangeable structural methods and implementation methods. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model, and should not be regarded as the entirety of this utility model or as a limitation or restriction of the technical solution of this utility model.

[0022] Example 1 Please see Figures 1-5 This utility model is a screening device for fish fry farming, including a support frame 1, a base 2 fixedly connected to the bottom of the support frame 1, a working chamber 3 fixedly connected to the inner cavity of the support frame 1, a flow guiding component provided in the inner cavity of the working chamber 3, a limiting rod 4 fixedly connected to the inner cavity of the working chamber 3, a motor 5 fixedly connected to the top of the limiting rod 4, and a rotating shaft 6 rotatably connected to the bottom of the inner cavity of the working chamber 3. The screening component is used to guide the swimming direction of the fish fry. A collecting component is provided in the inner cavity of the working chamber 3, including a first screen 7 fixedly connected to the bottom of the inner cavity of the working chamber 3, a stirring blade 8 fixedly connected to the rotating surface, and a discharge port 9 opened at the bottom of the inner cavity of the working chamber 3. The collecting component is used to collect the screened material.

[0023] Specifically: support frame 1 is used to support working chamber 3, limit rod 4 is used to limit the parts inside working chamber 3, motor 5 rotates to drive rotating shaft 6 to rotate, first screen 7 is used to prevent fish fry from entering stirring blade 8 when discharging screened fish fry, stirring blade 8 and rotating shaft 6 can not only guide water flow but also speed up the process when fish fry are discharged from outlet 9.

[0024] Example 2 Please see Figures 1-5Based on embodiment 1, a cover 10 is fixedly connected to the top of the working chamber 3. A feed inlet 11 is opened on the top of the cover 10. A temperature-regulating water tank 12 is set on the top of the cover 10. A water inlet pipe 13 is connected to the input end of the temperature-regulating water tank 12. A water delivery pipe 14 is connected to the input end of the temperature-regulating water tank 12. An annular water trough 15 is connected to the output end of the water delivery pipe 14. A nozzle 16 is connected to the bottom of the annular water trough 15. A second screen 17, a third screen 18, and a fourth screen 19 are fixedly connected to the surface of the limiting rod 4. A receiving box 20 is set on the top of the base 2. A valve 21 is installed on the surface of the discharge port 9. The valve 21 is used to control the flow rate of the discharge port 9.

[0025] Specifically: the cover 10 is used to prevent dust from entering the working chamber 3; the feed inlet 11 is used to put the unscreened fish fry into the working chamber 3; the temperature regulating water tank 12 can regulate the water temperature to a temperature suitable for the fish fry; the water inlet pipe 13 is used to guide the water flow into the temperature regulating water tank 12; the water delivery pipe 14 is used to guide the water flow after temperature adjustment into the annular water tank 15 and inject the water flow into the inner cavity of the working chamber 3 through the nozzle 16; the second screen 17 is used to screen out larger fish fry; the third screen 18 is used to select fish fry of normal size; and the fourth screen 19 is used to screen out smaller fish fry. Through the triple screening design, fish fry can be classified and raised more finely; the receiving box 20 is used to collect the screened fish fry; and the valve 21 is used to prevent the fish fry from being damaged due to the water flow being too fast when the fish fry are discharged from the discharge port 9.

[0026] Working principle: When the user needs to screen fish fry, first start the temperature regulating water tank 12. When the temperature regulating water tank 12 adjusts the water temperature to the temperature suitable for the fish fry, the water is introduced into the annular water tank 15 through the water supply pipe 14, and then injected into the working chamber 3 through the nozzle 16. After the water level reaches the working height, the fish fry are put in through the feed inlet 11. Then start the motor 5. The output end of the motor 5 drives the rotating shaft 6 to rotate. The rotating shaft 6 drives the stirring blade 8 to rotate, thereby guiding the water flow. After the fish fry screening is completed, open the valve 21 so that the screened fish fry enter the collection box from the discharge outlet 9 along the water flow, thus completing the entire screening work.

[0027] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A screening device for fish fry rearing, characterized in that, Includes a support frame (1), with a base (2) fixedly connected to the bottom of the support frame (1), and a working chamber (3) fixedly connected to the inner cavity of the support frame (1); The working chamber (3) is equipped with a flow-guiding component. The screening component includes a limiting rod (4) fixedly connected to the inner cavity of the working chamber (3), a motor (5) fixedly connected to the top of the limiting rod (4), and a rotating shaft (6) rotatably connected to the bottom of the inner cavity of the working chamber (3). The screening component is used to guide the swimming direction of the fish fry. The working chamber (3) is equipped with a collection component, which includes a first screen (7) fixedly connected to the bottom of the working chamber (3), a stirring blade (8) fixedly connected to the rotating surface, and a discharge port (9) opened at the bottom of the working chamber (3). The collection component is used to collect the screened material.

2. The screening device for fish fry rearing according to claim 1, characterized in that: The top of the working chamber (3) is fixedly connected to a chamber cover (10), and the top of the chamber cover (10) is provided with a feed inlet (11).

3. The screening device for fish fry rearing according to claim 2, characterized in that: A temperature-regulating water tank (12) is provided on the top of the cover (10), and the input end of the temperature-regulating water tank (12) is connected to a water inlet pipe (13).

4. The screening device for fish fry rearing according to claim 3, characterized in that: The temperature-regulating water tank (12) has an input end connected to a water supply pipe (14), and the output end of the water supply pipe (14) is connected to an annular water tank (15). The bottom of the annular water tank (15) is connected to a nozzle (16).

5. The screening device for fish fry rearing according to claim 1, characterized in that: The limiting rod (4) is fixedly connected to a second screen (17), and the limiting rod (4) is fixedly connected to a third screen (18).

6. The screening device for fish fry rearing according to claim 1, characterized in that: The limiting rod (4) is fixedly connected to a fourth screen (19), and the base (2) is provided with a receiving box (20) on top.

7. The screening device for fish fry rearing according to claim 1, characterized in that: A valve (21) is installed on the surface of the discharge port (9), and the valve (21) is used to control the flow rate of the discharge port (9).

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