Fry screening and grading mesh screen device

Abstract

The utility model discloses a fry screening grading mesh screen device, including box body, drive component, sounding device, screen cloth component and lifting component, drive component is installed on box body, including drive handle and moving frame, through drive handle transmission connection moving frame, make it move along the inside wall of box body to drive fry, sounding device is provided on box body, the screen cloth component is provided with the screen cloth component, lifting component is provided with the screen cloth component. The screening frame is composed of a cam and a sounder, the cam abuts against the sounder to generate sound and assist in driving fry when rotating, the screen assembly is arranged in the box body and comprises a plurality of screens with different screening hole diameters and is used for screening the fry in a classified mode, and the lifting assembly is installed on the box body, connected with the screening frame and capable of driving the screening frame to move out of the box body. The device integrates the functions of driving, sound production assisting, screening and lifting, efficient and automatic screening and grading of the fish fries are achieved, the screening efficiency and accuracy are improved, and powerful technical support is provided for fish fry breeding.

Description

Technical Field

[0001] This utility model relates to the field of fish fry screening technology, specifically to a fish fry screening and grading mesh screen device. Background Technology

[0002] Fish fry grading and screening allows fish fry of similar size to be raised together, preventing larger fish from eating smaller ones and ensuring a higher survival rate. Grading and screening also ensures that the fish fry are of similar size, making more efficient use of space and feed, promoting rapid growth, increasing yield, and reducing farming costs. The screening process also removes weak or diseased individuals, reducing the risk of water pollution caused by disease.

[0003] In existing technologies, most fish fry grading and screening devices mainly rely on adjusting the size of the screen to passively separate fish of different sizes by passing them through the screen. This cannot achieve spontaneous size classification of fish. Therefore, in the traditional screening process, the small fish fry are easily impacted when they come into contact with the screen, which can damage the fish fry, reduce the survival rate of the fish fry, and affect the economic benefits of aquaculture. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of the aforementioned technologies by proposing a fish fry screening and grading net screen device, which aims to solve the above-mentioned technical problems.

[0005] This utility model provides a fish fry screening and grading mesh screen device, including a box and fish fry located inside the box, and also includes:

[0006] A driving assembly is installed on the housing. The driving assembly includes a drive handle and a moving frame. The drive handle and the moving frame are connected by a transmission. The drive handle drives the moving frame to move along the inner side wall of the housing.

[0007] A sound-generating device is mounted on the housing. The sound-generating device includes a cam and a sound generator. The cam and the sound generator abut against each other. Rotating the cam drives the sound generator to produce sound.

[0008] The screen assembly is located inside the box and includes several screens with different screen aperture sizes.

[0009] The lifting component is mounted on the housing and has a filter box attached to it. The lifting component drives the filter box to move out of the housing.

[0010] Preferably, the driving assembly further includes two screws, and grooves are provided on two opposite side walls of the top of the housing. The two screws are rotatably installed in the grooves, and one end of each screw passes through the housing. A first sprocket and a second sprocket are fixedly installed on the outer side of the two screws, respectively. A drive rod is fixedly installed on the outer side wall of the housing, and a third sprocket is rotatably installed on the drive rod. The first sprocket, the second sprocket, and the third sprocket are connected by chain drive.

[0011] Preferably, both screws are threaded to the outer sides with movable blocks, the movable blocks are slidably connected to the grooves, the two ends of the movable frame are fixedly connected to the two movable blocks respectively, the shape and size of the movable frame are adapted to the inner side wall of the box, and a water-permeable cloth is provided on the movable frame.

[0012] Preferably, cams are fixedly installed on the outer sides of both screws. The cams are located on the screws in the grooves. The bottom of the grooves has a mounting slot. The sound generator is installed in the mounting slot, and the sound generator abuts against the convex part of the cam.

[0013] Preferably, the screen assembly includes a first screen, a second screen, and a third screen. The two opposite inner sidewalls of the box are provided with sliding grooves in the vertical direction. The first screen, the second screen, and the third screen are all slidably installed in the sliding grooves. The apertures of the first screen, the second screen, and the third screen increase sequentially and are distributed in order. The first screen is close to the moving frame.

[0014] Preferably, the lifting assembly includes a reel winch, steel cables, and a drive motor. The reel winch is fixedly installed on the top of the housing, and the steel cables are movably connected to the four bottom corners of the screening frame. The drive motor drives the reel winch to rotate in order to lift the screening frame.

[0015] Preferably, the screening frame includes an upper frame and a lower frame, and the four corresponding corners of the upper frame and the lower frame are fixedly connected by connecting rods, with a filter screen fixedly installed between the four connecting rods.

[0016] Compared with existing technologies, it has the following beneficial effects:

[0017] This invention provides a fish fry screening and grading netting device. A drive handle moves a driving component within a box, gradually reducing the fish fry's space and driving them to the other side. Simultaneously, the driving component activates a sound-generating device, which transmits sound through the water, further driving the fry away from the sound source. During this movement, the smallest fry pass through the netting first and enter the screening frame. The first batch of fry is then removed by a lifting component. Subsequent fry of different sizes are graded and screened using this method until final screening is complete. This device design, by continuously compressing the fry's space and generating sound, forces them to move towards the screening frame and pass through the netting sequentially. This allows the fry to complete the grading and screening spontaneously, minimizing damage and improving their survival rate. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the right side of a fish fry screening and grading mesh screen device according to the present invention;

[0020] Figure 2 This is a schematic diagram of the left side of a fish fry screening and grading mesh screen device according to the present invention;

[0021] Figure 3 This is a schematic diagram of the driving component of a fish fry screening and grading mesh screen device according to the present invention;

[0022] Figure 4 This is a schematic diagram of the screening frame of a fish fry screening and grading mesh screen device according to the present invention.

[0023] In the diagram, 1. Box body; 2. Drive handle; 3. Moving frame; 4. Cam; 5. Sound generator; 6. Screw; 7. Groove; 8. First sprocket; 9. Second sprocket; 10. Drive rod; 11. Third sprocket; 12. Chain; 13. Moving block; 14. Permeable cloth; 15. Mounting groove; 16. First screen; 17. Second screen; 18. Third screen; 19. Slide groove; 20. Winding machine; 21. Steel cable; 22. Drive motor; 23. Upper frame; 24. Lower frame; 25. Connecting rod; 26. Filter screen. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0025] Example 1:

[0026] like Figures 1 to 4 As shown, this utility model provides a fish fry screening and grading mesh screen device, including a box 1 and fish fry located inside the box 1, and further including:

[0027] The driving assembly is installed on the housing 1. The driving assembly includes a drive handle 2 and a moving frame 3. The drive handle 2 and the moving frame 3 are connected by a transmission. The drive handle 2 drives the moving frame 3 to move along the inner wall of the housing 1.

[0028] A sound-generating device is installed on the housing 1. The sound-generating device includes a cam 4 and a sound generator 5. The cam 4 and the sound generator 5 abut against each other. Rotating the cam 4 drives the sound generator 5 to produce sound.

[0029] A screen assembly is installed inside the housing 1. The screen assembly includes several screens with different screen aperture sizes.

[0030] The lifting component is set on the housing 1, and a filter box is connected to the lifting component. The lifting component drives the filter box to move out of the housing 1.

[0031] In use, the drive handle 2 is manually rotated to move the movable frame 3 inside the box 1 along the inner wall of the box 1, gradually compressing the activity space of the fish fry. While the movable frame 3 is moving, it will drive the cam 4 to rotate and continuously abut against the sound generator 5, causing the sound generator 5 to emit sound and noise. Under the above stimulation, the fish fry will move away from the sound generator 5. The smaller fish fry will pass through all the screens first. When the fish fry enter the screening frame, the screen is removed from the box 1 by the lifting component, and the first batch of screened fish fry is taken out. Then the screen with smaller aperture is taken out from the box 1 to continue to compress the activity space of the fish fry until the second batch of fish fry is screened out. The above method is used until the grading and screening of fish fry is completed.

[0032] Example 2:

[0033] like Figures 1 to 4As shown, in conjunction with the technical solution of Embodiment 1, in this technical solution, the driving assembly further includes two screws 6. Grooves 7 are provided on two opposite side walls of the top of the housing 1. The two screws 6 are rotatably installed in the grooves 7, with one end of each screw 6 penetrating through the housing 1. A first sprocket 8 and a second sprocket 9 are fixedly installed on the outer sides of the two screws 6, respectively. A drive rod 10 is fixedly installed on the outer side wall of the housing 1, and a third sprocket 11 is rotatably installed on the drive rod 10. The first sprocket 8, the second sprocket 9, and the third sprocket 11 are connected by a chain 12. By rotating the third sprocket 11, the first sprocket 8 and the second sprocket 9, which are connected to it via the chain 12, are driven to rotate, thereby driving the two screws 6 to rotate.

[0034] Furthermore, each of the two screws 6 is threadedly connected to a movable block 13 on its outer side. The movable block 13 is slidably connected to the groove 7. Both ends of the movable frame 3 are fixedly connected to the two movable blocks 13 respectively. The shape and size of the movable frame 3 are adapted to the inner side wall of the box 1. A water-permeable cloth 14 is provided on the movable frame 3. The two screws 6 rotate in place at the connection with the box 1, driving the movable blocks 13 on them to move along the length of the screws 6. Since the movable blocks 13 are square and the groove 7 is also square, they are compatible with each other. Therefore, the movable blocks 13 will not rotate with the screws 6. While the two movable blocks 13 move synchronously, they drive the movable frame 3 fixedly connected to them to move and gradually compress the activity space of the fish fry.

[0035] Furthermore, cams 4 are fixedly installed on the outer sides of both screws 6. The cams 4 are located on the screws 6 within the grooves 7. The bottom of the grooves 7 has a mounting slot 15, and the sound generator 5 is installed in the mounting slot 15. The sound generator 5 abuts against the protrusion of the cam 4. When the screws 6 rotate, they drive the cams 4 on them to rotate synchronously. When the cams 4 rotate, the protrusions on them continuously abut against the sound generator 5 in the mounting slot 15. When the cam 4 abuts against the sound generator 5, the sound generator 5 emits a sound, further driving the fish fry to move away from the sound generator 5.

[0036] Furthermore, the screen assembly includes a first screen 16, a second screen 17, and a third screen 18. Two opposing inner sidewalls of the housing 1 are vertically oriented with sliding grooves 19. The first screen 16, second screen 17, and third screen 18 are all slidably installed within the sliding grooves 19. The apertures of the first screen 16, second screen 17, and third screen 18 increase sequentially and are distributed in order. The first screen 16 is located closer to the movable frame 3. The first screen 16, second screen 17, and third screen 18 can all be removed from the sliding grooves 19. After one screening is completed, the first screen 16 is removed from the housing 1. After the second screening is completed, the second screen 17 is removed from the housing 1. The above steps are repeated to gradually complete the screening of the fish fry.

[0037] Furthermore, the lifting assembly includes a winding machine 20, a steel cable 21, and a drive motor 22. The winding machine 20 is fixedly installed on the top of the housing 1. The steel cable 21 is movably connected to the four bottom corners of the screening frame. The drive motor 22 drives the winding machine 20 to rotate, thereby lifting the screening frame. The drive motor 22 drives the winding machine 20 to rotate, causing the steel cable 21 to wind around the body of the winding machine 20. During the retrieval process, the steel cable 21 gradually pulls the screening frame out of the housing 1.

[0038] Furthermore, the screening frame includes an upper frame 23 and a lower frame 24. The four corresponding corners of the upper frame 23 and the lower frame 24 are fixedly connected by connecting rods 25, and a filter screen 26 is fixedly installed between the four connecting rods 25. During the process of pulling the screening frame out of the box 1, some of the water in the screening frame will flow out along the filter screen 26, which ensures that the water is not too full and the fish fry will escape from the top of the screening frame, and also avoids the screening frame being completely empty of water, causing the fish fry to be in a dehydrated state and affecting their health.

[0039] The working principle of the fish fry screening and grading mesh screen device described in this application is as follows:

[0040] In use, manually turning the drive handle 2 drives the third sprocket 11 to rotate. Simultaneously, the rotation of the third sprocket 11 drives the first sprocket 8 and the second sprocket 9, which are connected to it via chain 12, to rotate. This further drives the two screws 6 to rotate. The rotation of the two screws 6 causes the threadedly connected moving block 13 to move along the groove 7 on the box 1. This further drives the moving frame 3, which is fixedly connected to the two moving blocks 13, to move within the box 1, gradually compressing the fish fry's activity space. While the two screws 6 rotate, the cam 4 on them also rotates with the screws 6, continuously abutting against the sound generator 5 in the mounting slot 15, causing the sound generator 5 to continuously emit sound, further forcing... The fish fry move away from the sound generator 5. Smaller fry will pass through the first screen 16, the second screen 17, and the third screen 18 in sequence and enter the screening frame. At this time, the drive motor 22 is started to drive the reel 20 to rotate and pull the screening frame out of the box 1. Some of the water in the screening frame will flow out from the filter screen 26, allowing the fish fry to swim in the water in the lower frame 24. Then the screening frame is put back into the box 1, and the first drying net is taken out of the box 1 to further compress the activity space of the fish fry and perform the second batch of screening. The above steps are gradually completed to complete the grading and screening of all fish fry. This device drives the fish fry to spontaneously pass through the filter screen in the above way, reducing the damage to the fish fry and improving the screening effect.

[0041] The above description is merely a preferred embodiment of this utility model and does not constitute any limitation on this utility model. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model, or modify it into equivalent embodiments, without departing from the scope of the technical solution of this utility model. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technology of this utility model without departing from the scope of the technical solution of this utility model shall fall within the protection scope of this technical solution.

Claims

1. A larva screening and grading net device comprising a box (1) and larvae in the box (1), characterized in that, Also include: The driving assembly is arranged on the box (1), the driving assembly includes driving handle (2) and moving frame (3), the transmission connection between driving handle (2) and moving frame (3), driving handle (2) drives moving frame (3) along the inside wall of the box (1) moves; Sound device, the sound device is arranged on the box (1), the sound device includes cam (4) and sounder (5), the cam (4) and the sounder (5) are mutually abutted, rotating the cam (4) drives the sounder (5) to sound; Screen assembly, the screen assembly is arranged in the box (1), the screen assembly includes several screen meshes with different screen aperture sizes; The lifting assembly is arranged on the box (1), the lifting assembly is connected with the screening frame, and the lifting assembly drives the screening frame to move out of the box (1).

2. A larval screening and grading net apparatus according to claim 1, wherein, The driving assembly further includes two screws (6), the box (1) top opposite two side walls are all provided with recess (7), two the screw (6) is respectively installed in the recess (7), two the screw (6) one end is all through the box (1), two the screw (6) outside is fixedly installed with first sprocket (8) and second sprocket (9) respectively, the outside wall of the box (1) is fixedly installed with drive rod (10), the third sprocket (11) is rotatably installed on the drive rod (10), the first sprocket (8) and the second sprocket (9) and the third sprocket (11) are drivenly connected by chain (12).

3. A larval screening and grading net apparatus according to claim 2, wherein, The outside of two the screw (6) is all threadedly connected with moving block (13), the moving block (13) and the recess (7) are slidably connected, the both ends of the moving frame (3) are fixedly connected with two the moving block (13), the shape and size of the moving frame (3) are compatible with the inside wall of the box (1), and the moving frame (3) is provided with water permeable cloth (14).

4. A larval screening and grading net apparatus according to claim 2, wherein, The outside of two the screw (6) is fixedly installed with cam (4), the cam (4) is located on the screw (6) in the recess (7), the bottom of the recess (7) is provided with installation groove (15), and the sounder (5) is installed in the installation groove (15). The sounder (5) and the convex part of the cam (4) are mutually abutted.

5. A larval screening and grading net apparatus according to claim 1, wherein, The screen assembly includes first screen (16), second screen (17) and third screen (18), the box (1) opposite two inside walls are provided with sliding groove (19) along the vertical direction, the first screen (16), second screen (17) and third screen (18) are slidably installed in the sliding groove (19), the aperture of the first screen (16), second screen (17) and third screen (18) increases in turn and is distributed in order, and the first screen (16) is close to the moving frame (3).

6. A larval screening and grading net apparatus according to claim 1, wherein, The lifting assembly comprises a winding wheel machine (20), a steel cable (21) and a driving motor (22), the winding wheel machine (20) is fixedly installed on the top of the box body (1), the steel cable (21) is movably connected with four bottom corners of the screening frame respectively, and the driving motor (22) drives the winding wheel machine (20) to rotate to lift the screening frame.

7. A larval screening and grading net apparatus according to claim 6, wherein, The screening frame comprises an upper frame body (23) and a lower frame body (24), four corners of the upper frame body (23) and the lower frame body (24) are fixedly connected through connecting rods (25), and a water filtering net (26) is fixedly installed between four connecting rods (25).

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