Graded screening device for skipjack
By designing a skipjack tuna grading and sorting device that includes a conveyor belt, length sensor, and cylinder control, the problem of low efficiency in manual grading was solved, and automated grading and efficient sorting of skipjack tuna were achieved.
Patent Information
- Application Number
- CN202520271488.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-02-20
AI Technical Summary
In current technology, the grading and sorting of skipjack tuna mainly relies on manual operation, which is inefficient, labor-intensive and has low accuracy.
A grading and screening device was designed, which includes a conveyor belt, a length sensor, a discharge guide plate, and cylinder control. The length sensor detects the size of the skipjack tuna, and the cylinder controls the lifting and lowering of the distribution baffle and the coordination of the discharge guide plate to achieve automatic grading of the skipjack tuna.
It has enabled automated grading of skipjack tuna, improving work efficiency and sorting accuracy, and simplifying the operation process.
Smart Images
Figure CN223775436U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a grading and screening device for skipjack tuna. Background Technology
[0002] Skipjack tuna, also known as bonito, belongs to the superorder Perciformes, suborder Tunaeidae, and genus Skipjack tuna. It is a pelagic fish that lives in the upper layers of the ocean, distributed across a wide range of tropical, subtropical, and temperate waters in the Pacific, Atlantic, and Indian Oceans. Skipjack tuna are relatively small, generally around 60cm in length, with the largest not exceeding 100cm. They are highly nutritious. Various processing techniques exist for preparing skipjack tuna. Grading the fish by size is a crucial pre-processing step. Currently, fish grading and sorting are mostly done manually, relying on workers' experience and visual inspection, which is inefficient, labor-intensive, and has low accuracy. Utility Model Content
[0003] To address the shortcomings mentioned above, this utility model provides a grading and screening device for skipjack tuna.
[0004] To achieve the above objectives, this utility model provides a grading and screening device for skipjack tuna, including a conveyor belt, a length sensor located above the right side of the conveyor belt, and a discharge guide plate located on the right side of the conveyor belt. The discharge guide plate is inclined downward from left to right. A primary material distribution baffle and a secondary material distribution baffle are arranged horizontally at intervals above the discharge guide plate. The upper parts of the primary material distribution baffle and the secondary material distribution baffle are respectively connected to a first cylinder and a second cylinder. A primary material frame, a secondary material frame, and a tertiary material frame are arranged sequentially below the discharge guide plate. The position of the primary material frame corresponds to the position of the primary material distribution baffle, and the position of the secondary material frame corresponds to the position of the secondary material distribution baffle.
[0005] Skipjack tuna are placed at intervals on the conveyor belt and moved from left to right. When the skipjack tuna moves to below the length sensor, the length sensor detects the size of the skipjack tuna. Then, the primary material distribution baffle and the secondary material distribution baffle, together with the discharge guide plate, move the skipjack tuna out to the corresponding material frame.
[0006] As a further improvement of this utility model, the primary material distribution baffle is inclined, the primary material distribution baffle is inclined from back to front and to the right, the left side of the primary material distribution baffle forms a guide slope, the front side of the primary material distribution baffle extends beyond the edge of the discharge guide plate and extends to the top of the primary material frame, and the secondary material distribution baffle has the same structure as the primary material distribution baffle.
[0007] As a further improvement of this utility model, the three-stage material frame is located at the lower right of the discharge guide plate.
[0008] As a further improvement of this utility model, both the first cylinder and the second cylinder are mounted on the upper fixed seat.
[0009] As a further improvement of this utility model, side baffles are symmetrically provided on the front and rear sides of the conveyor belt.
[0010] The beneficial effects of this utility model are as follows:
[0011] The device first uses a length sensor to detect the length of the skipjack tuna on the conveyor belt online. The length sensor feeds back the detection signal to the first cylinder and the second cylinder. The first cylinder and the second cylinder control the raising and lowering of the primary and secondary distribution baffles according to the signal. The skipjack tuna is graded and discharged by the inclined discharge guide plate in conjunction with the primary and secondary distribution baffles. The device has a simple structure, is easy to operate, and improves work efficiency. Attached Figure Description
[0012] Figure 1 This is a front view of a skipjack tuna grading and sorting device according to the present invention.
[0013] Figure 2 This is a cross-sectional view of the primary material distribution baffle 6;
[0014] Figure 3 This is a top view of a skipjack tuna grading and sorting device according to the present invention.
[0015] In the diagram: 1. Conveyor belt; 2. Side baffle; 3. Skipjack tuna; 4. Length sensor; 5. Discharge guide plate; 6. Primary material distribution baffle; 61. Guide slope; 7. First cylinder; 8. Secondary material distribution baffle; 9. Second cylinder; 10. Upper fixed seat; 11. Primary material frame; 12. Secondary material frame; 13. Tertiary material frame. Detailed Implementation
[0016] like Figure 1 , Figure 3 As shown, the skipjack tuna grading and screening device of this utility model includes a conveyor belt 1, a length sensor 4 located on the upper right side of the conveyor belt 1, and a discharge guide plate 5 located on the right side of the conveyor belt 1. Side baffles 2 are symmetrically arranged on the front and rear sides of the conveyor belt 1. The discharge guide plate 5 is inclined downward from left to right. A primary material distribution baffle 6 and a secondary material distribution baffle 8 are arranged horizontally at intervals above the discharge guide plate 5. The upper parts of the primary material distribution baffle 6 and the secondary material distribution baffle 8 are respectively connected to a first cylinder 7 and a second cylinder 9. The first cylinder 7 and the second cylinder 9 are both mounted on an upper fixed base 10. A primary material frame 11, a secondary material frame 12, and a tertiary material frame 13 are arranged sequentially below the discharge guide plate 5. The position of the primary material frame 11 corresponds to the position of the primary material distribution baffle 6, and the position of the secondary material frame 12 corresponds to the position of the secondary material distribution baffle 8. The primary material distribution baffle 6 is inclined and tilted from back to front to the right. A guide slope 61 is formed on the left side of the primary material distribution baffle 6 (see Figure 2 The front side of the first-level material distribution baffle 6 extends beyond the edge of the discharge guide plate 5 and extends above the first-level material frame 11. The second-level material distribution baffle 8 has the same structure as the first-level material distribution baffle 6. The third-level material frame 13 is located at the lower right of the discharge guide plate 5.
[0017] Skipjack tuna 3 is placed at intervals on conveyor belt 1 and moved from left to right. When the skipjack tuna 3 moves to below the length sensor 4, the length sensor 4 detects the size of the skipjack tuna 3, and then the primary material distribution baffle 6 and the secondary material distribution baffle 8, together with the discharge guide plate 5, move the skipjack tuna 3 out to the corresponding material frame.
[0018] The device first uses a length sensor to detect the length of the skipjack tuna on the conveyor belt online. The length sensor feeds back the detection signal to the first cylinder and the second cylinder. The first cylinder and the second cylinder control the raising and lowering of the primary and secondary distribution baffles according to the signal. The skipjack tuna is graded and discharged by the inclined discharge guide plate in conjunction with the primary and secondary distribution baffles. The device has a simple structure, is easy to operate, and improves work efficiency.
[0019] In practical use, for ease of understanding of this utility model, it will be described in conjunction with the accompanying drawings;
[0020] In this embodiment, the size and shape of the skipjack tuna are proportional. The skipjack tuna are divided into three grades and discharged to facilitate subsequent processing. Those weighing less than 1.8 kg are grade one, those weighing 1.8 to 3.6 kg are grade two, and those weighing more than 3.6 kg are grade three.
[0021] During operation, skipjack tuna are placed at intervals on the conveyor belt and moved from left to right. When a skipjack tuna moves under a length sensor, it passes through the light curtain formed by the sensor, allowing the length of the skipjack tuna to be measured and its overall size determined. The length sensor then feeds back the detection signal to the first and second cylinders. When the skipjack tuna is less than 1.8 kg (Grade 1), the first cylinder receives a working signal and moves the primary distribution baffle downwards until its lower part contacts the discharge guide plate. The skipjack tuna slides down the discharge guide plate and then slides down the primary distribution baffle to the primary material frame. When the skipjack tuna is in the second grade (1.8-3.6kg), the second cylinder receives a working signal and moves the secondary distribution baffle downward until the lower part of the secondary distribution baffle contacts the discharge guide plate. The skipjack tuna then slides down the discharge guide plate and then slides down the secondary distribution baffle to the secondary material frame. When the skipjack tuna is in the third grade (greater than 3.6kg), the skipjack tuna slides directly down the discharge guide plate to the tertiary material frame.
[0022] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A device for grading of skipjack tuna, characterized by: The length sensor (4) is arranged above the right part of the conveying belt (1), the discharge guide plate (5) is arranged on the right side of the conveying belt (1), the discharge guide plate (5) is inclined downward from left to right, a first material distribution baffle (6) and a second material distribution baffle (8) are arranged above the discharge guide plate (5) in a horizontal direction, the upper parts of the first material distribution baffle (6) and the second material distribution baffle (8) are connected with a first air cylinder (7) and a second air cylinder (9) respectively, a first material frame (11), a second material frame (12) and a third material frame (13) are sequentially arranged below the discharge guide plate (5), the position of the first material frame (11) corresponds to the first material distribution baffle (6), and the position of the second material frame (12) corresponds to the second material distribution baffle (8). The bonitos (3) are arranged on the conveying belt (1) in an interval and move from left to right, when the bonitos (3) move below the length sensor (4), the size of the bonitos (3) is detected by the length sensor (4), and then the bonitos (3) are moved out to the corresponding material frame by the first material distribution baffle (6), the second material distribution baffle (8) and the discharge guide plate (5).
2. A skipper grading apparatus according to claim 1, characterised in that: The first material distribution baffle (6) is inclined, the first material distribution baffle (6) is inclined from back to front and right, the left side of the first material distribution baffle (6) forms a guide inclined surface (61), the front side of the first material distribution baffle (6) exceeds the edge of the discharge guide plate (5) and extends above the first material frame (11), and the second material distribution baffle (8) is consistent with the first material distribution baffle (6) in structure.
3. A device for grading of skipjack as claimed in claim 1, wherein: The third material frame (13) is arranged below and right of the discharge guide plate (5).
4. A device for grading of skipjack as claimed in claim 1, wherein: The first air cylinder (7) and the second air cylinder (9) are both installed on the upper fixed seat (10).
5. A device for grading of skipjack as claimed in claim 1, wherein: The conveying belt (1) is symmetrically provided with side baffles (2) on the front and rear sides.