Crayfish seed screening device for crayfishes

Abstract

The utility model discloses a shrimp seed screening device for crayfishes, relates to the technical field of shrimp seed screening, solves the problems that an existing device is poor in screening effect and low in collecting efficiency, and adopts the following scheme that a first inner cylinder is fixedly installed in an outer cylinder. Through the arrangement of a first inner cylinder, a second inner cylinder, a first screening hole and a second screening hole, shrimp seeds are placed in a third screening cavity, small and extremely small shrimp seeds enter a second screening cavity through the second screening hole, large shrimp seeds are left in the third screening cavity, and then extremely small shrimp seeds enter a first screening cavity through the first screening hole; and meanwhile, through the arrangement of the screening pipe, the control valve and the water suction pump, the control valve and the water suction pump are started, the shrimp seeds can rapidly enter the collecting box through the screening pipe to be classified and collected under the action of the gravity of the shrimp seeds and the water suction pump, and the screening and collecting efficiency is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to shrimp fry screening technical field, concretely is a kind of crayfish shrimp fry screening device. BACKGROUND

[0002] Breeder often screens shrimp fry, to reach the shrimp fry of different length is separated effect, it is convenient to batch culture in later period, the shrimp fry screening device commonly used at present stage, mostly only single screening can be carried out, the quality of screening is relatively rough, and the shrimp fry separated out is difficult to collect, needs separate step to carry out the separate collection of shrimp fry, more time is consumed, and efficiency is lower.

[0003] Through the search, the application book with patent application No. CN213549113U discloses a screening device for shrimp fry culture, which comprises a screening box body, left and right sides of the inner cavity of the screening box body are respectively provided with a left filter plate and a right partition plate, a screening cavity is formed around the gap cavity between the left filter plate and the right partition plate, an oxygenation aeration pipe is installed at the middle position of the screening cavity, and left and right side walls of the screening box body are respectively provided with a left screening outlet pipe and a right screening outlet pipe.

[0004] However, due to the setting of the left filter plate, the shrimp fry can only be divided into two sizes, the screening is not fine, and the screening effect is poor. In addition, due to the setting of the partition plate and the screening outlet pipe, after screening is completed, the partition plate is pulled out, and then the shrimp fry is discharged through the screening outlet pipe. The horizontal placement of the screening outlet pipe causes some shrimp fry to remain in the screening cavity and not to be easily discharged from the screening outlet pipe, resulting in low collection efficiency of the shrimp fry.

[0005] Therefore, we propose a crayfish shrimp fry screening device. UTILITY MODEL CONTENTS

[0006] In view of the deficiencies of the prior art, the utility model provides a crayfish shrimp fry screening device, which solves the problems of poor screening effect and low collection efficiency of the existing device.

[0007] To achieve the above purpose, the utility model realizes the following technical scheme: a crayfish shrimp fry screening device, comprising an outer cylinder, four groups of support columns are fixedly installed on the bottom surface of the outer cylinder;

[0008] A first inner cylinder with a suitable size is fixedly installed in the inner part of the outer cylinder, first screening holes are evenly distributed on the outer wall of the first inner cylinder, a first screening cavity is formed between the first inner cylinder and the outer cylinder, a second inner cylinder is fixedly installed in the inner part of the first inner cylinder, second screening holes are evenly distributed on the outer wall of the second inner cylinder, a second screening cavity is formed between the second inner cylinder and the first inner cylinder, and a third screening cavity is formed in the inner part of the second inner cylinder;

[0009] The bottom surface of the outer cylinder is fixedly provided with three groups of screening pipes in communication with the first screening cavity, the second screening cavity and the third screening cavity respectively, the bottom end of the screening pipe is fixedly provided with a collecting box in communication, a control valve is fixedly provided on the outer wall of the screening pipe, and a water suction pump is assembled in the collecting box.

[0010] Preferably, an oxygenation seat is assembled above the outer cylinder, the bottom surface of the oxygenation seat is fixedly provided with oppositely-arranged oxygenation pipes, oxygenation holes are uniformly formed in the outer wall of the oxygenation pipe, and the oxygenation seat is connected with the outer cylinder through a connecting block, so that oxygen can be provided for the prawn larvae, thereby improving the survival rate of the prawn larvae.

[0011] Preferably, the bottom surface of the oxygenation seat is fixedly provided with three groups of oxygenation pipes in positionally opposite and specificationally matched relationship with the first screening cavity, the second screening cavity and the third screening cavity, so that oxygen can be provided for the three groups of screening cavities, thereby improving the oxygen-providing efficiency.

[0012] Preferably, an oxygen tank is assembled on the top surface of the oxygenation seat, so that the deficiency of external oxygen can be prevented, and the oxygen-providing effect is improved.

[0013] Preferably, the outer cylinder and the first inner cylinder are made of transparent glass material, so that the screening condition of the prawn larvae can be observed, and external light is also conducive to the screening of the prawn larvae.

[0014] Preferably, a drain port is fixedly provided on the front side of the collecting box, and an obstruction net is assembled in the drain port, so that the water in the collecting box can be drained, and the prawn larvae can also be prevented from being drained together with the water.

[0015] 1. The prawn larvae screening device for small crayfish, through the arrangement of the first inner cylinder, the second inner cylinder, the first screening hole and the second screening hole, the prawn larvae are placed in the third screening cavity, the smaller and the smallest prawn larvae enter the second screening cavity through the second screening hole, the larger prawn larvae remain in the third screening cavity, and then the smallest prawn larvae enter the first screening cavity through the first screening hole, so that the prawn larvae are screened into three specifications, and the screening effect is good.

[0016] 2. Meanwhile, through the arrangement of the screening pipe, the control valve and the water suction pump, the vertical screening pipe is in communication with the three groups of screening cavities respectively, the control valve and the water suction pump are opened, and the prawn larvae can quickly enter the collecting box through the screening pipe for classified collection under the action of the self-gravity and the water suction pump, and the screening and collecting efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the whole utility model;

[0018] Figure 2 It is a structural schematic view of the screening pipe of the utility model;

[0019] Figure 3 This is a schematic diagram of the inner cylinder of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the oxygenation tube of this utility model.

[0021] In the diagram: 1. Outer cylinder; 2. Support column; 3. First inner cylinder; 4. First screening hole; 5. First screening chamber; 6. Second inner cylinder; 7. Second screening hole; 8. Second screening chamber; 9. Third screening chamber; 10. Screening tube; 11. Collection box; 12. Control valve; 13. Drain outlet; 14. Oxygenating seat; 15. Oxygen tank; 16. Connecting block; 17. Oxygenating pipe; 18. Oxygenating hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1:

[0024] like Figures 1-4 As shown: A first inner cylinder 3 of the same specifications is fixedly installed inside the outer cylinder 1. The outer wall of the first inner cylinder 3 is provided with evenly distributed first screening holes 4. A first screening cavity 5 is formed between the first inner cylinder 3 and the outer cylinder 1. A second inner cylinder 6 is fixedly installed inside the first inner cylinder 3. The outer wall of the second inner cylinder 6 is provided with evenly distributed second screening holes 7. A second screening cavity 8 is formed between the second inner cylinder 6 and the first inner cylinder 3. A third screening cavity 9 is formed inside the second inner cylinder 6. By setting up the first inner cylinder 3, the second inner cylinder 6, the first screening holes 4 and the second screening holes 7, shrimp larvae are placed in the third screening cavity 9. Smaller and very small shrimp larvae enter the second screening cavity 8 through the second screening holes 7, larger shrimp larvae remain in the third screening cavity 9, and then very small shrimp larvae enter the first screening cavity 5 through the first screening holes 4, thereby screening the shrimp larvae into three sizes with good screening effect.

[0025] Example 2:

[0026] like Figures 2-4As shown: the bottom surface of the outer cylinder 1 is fixedly installed with three groups of screening pipes 10 communicated with the first screening cavity 5, the second screening cavity 8 and the third screening cavity 9 respectively, the bottom end of the screening pipe 10 is fixedly installed with a collecting box 11 communicated, the outer wall of the screening pipe 10 is fixedly installed with a control valve 12, and the collecting box 11 is assembled with a water suction pump, through the setting of the screening pipe 10, the control valve 12 and the water suction pump, the vertical screening pipe 10 is communicated with the three groups of screening cavities respectively, the control valve 12 and the water suction pump are opened, and the fry can quickly pass through the screening pipe 10 into the collecting box 11 for classified collection under the action of the self gravity and the water suction pump, and the screening and collecting efficiency is high.

[0027] Embodiment 3:

[0028] As Figures 2-3 shown: the upper part of the outer cylinder 1 is assembled with an oxygenation seat 14, the bottom surface of the oxygenation seat 14 is fixedly installed with opposite oxygenation pipes 17, the outer wall of the oxygenation pipe 17 is uniformly provided with oxygenation holes 18, and the oxygenation seat 14 is connected with the outer cylinder 1 through the connecting block 16, so that oxygen can be provided for the fry, thereby improving the survival rate of the fry.

[0029] The working principle and use process of the utility model are as follows: when the device needs to work, the fry is placed in the third screening cavity 9, and the oxygenation seat 14 is opened at the same time, a certain amount of oxygen is provided for the fry through the oxygenation pipe 17 and the oxygenation hole 18, the activity of the fry is ensured, the smaller and extremely small fry enters the second screening cavity 8 through the second screening hole 7, the larger fry stays in the third screening cavity 9, then the extremely small fry enters the first screening cavity 5 through the first screening hole 4, so that the fry is screened into three specifications, after the screening is completed, the vertical screening pipe 10 is communicated with the three groups of screening cavities respectively, the control valve 12 and the water suction pump are opened, and the fry can quickly pass through the screening pipe 10 into the collecting box 11 for classified collection under the action of the self gravity and the water suction pump, and the screening and collecting efficiency is high.

[0030] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, and it is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0031] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature described. The specification can include implicit combinations of explicitly mentioned features and / or explicit combinations of implicitely mentioned features. Each embodiment depends on the explicit combinations of features and / or the implicit combinations of features made specifically within that embodiment, and each such embodiment can be combined with every other such embodiment to create further embodiments.

Claims

1. A crayfish for shrimp screening device, comprising an outer cylinder (1), the bottom surface of the outer cylinder (1) is fixedly installed with four groups of supporting columns (2); characterized in that The inside of the outer cylinder (1) is fixedly installed with a first inner cylinder (3) with appropriate specifications, a plurality of first screening holes (4) are uniformly arranged on the outer wall of the first inner cylinder (3), a first screening cavity (5) is formed between the first inner cylinder (3) and the outer cylinder (1), a second inner cylinder (6) is fixedly installed in the inside of the first inner cylinder (3), a plurality of second screening holes (7) are uniformly arranged on the outer wall of the second inner cylinder (6), a second screening cavity (8) is formed between the second inner cylinder (6) and the first inner cylinder (3), and a third screening cavity (9) is formed in the inside of the second inner cylinder (6); The bottom surface of the outer cylinder (1) is fixedly installed with three groups of screening pipes (10) respectively connected with the first screening cavity (5), the second screening cavity (8) and the third screening cavity (9), the bottom end of the screening pipe (10) is fixedly installed with a collecting box (11) in communication, the outer wall of the screening pipe (10) is fixedly installed with a control valve (12), and the collecting box (11) is provided with a water suction pump.

2. The device for screening of shrimp fry for use in crayfish farming according to claim 1, characterized in that: An oxygenation seat (14) is arranged above the outer cylinder (1), the bottom surface of the oxygenation seat (14) is fixedly installed with position-opposed oxygenation pipes (17), the outer wall of the oxygenation pipe (17) is uniformly provided with oxygenation holes (18), and the oxygenation seat (14) is connected with the outer cylinder (1) through a connecting block (16).

3. The device for screening of shrimp fry for use in crayfish farming according to claim 2, characterized in that: The bottom surface of the oxygenation seat (14) is fixedly installed with three groups of oxygenation pipes (17) with appropriate specifications and position-opposed to the first screening cavity (5), the second screening cavity (8) and the third screening cavity (9).

4. The device for screening of shrimp fry for use in crayfish farming according to claim 2, characterized in that: The top surface of the oxygenation seat (14) is provided with an oxygen tank (15).

5. The crayfish fry screening device of claim 1, wherein: The outer cylinder (1) and the first inner cylinder (3) are made of transparent glass material.

6. The device for screening of shrimp fry for use in crayfish farming according to claim 1, characterized in that: A drain port (13) is fixedly installed on the front side of the collecting box (11), and a blocking net is arranged in the drain port (13).

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