A screening device for caviar production
By using a recognition camera and a defect-sorting mechanism to automatically select fish eggs, the problem of low efficiency in traditional manual sorting has been solved, achieving efficient and automated caviar production and improving production efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN DONGJIANG LAKE STURGEON TECHNOLOGY CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-06-05
AI Technical Summary
In traditional caviar production, manually sorting out spoiled fish eggs is inefficient and costly, making it difficult to meet the rapid sorting requirements of large-scale production.
Employing a recognition camera and a defective egg screening mechanism, the system automatically identifies and removes damaged fish eggs through the cooperation of a laser measuring device and a needle. A servo motor drives a threaded rod and an electric push rod to achieve precise positioning and movement of the needle, and a conveyor belt and collection box are used to achieve automated screening.
It improved screening efficiency, reduced labor costs, enabled rapid screening in large-scale production, and ensured product quality.
Smart Images

Figure CN224321878U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of caviar processing technology, and specifically discloses a screening device for caviar production. Background Technology
[0002] In the caviar production process, the quality of the fish eggs directly affects the quality of the caviar, so it is necessary to screen out the bad fish eggs from among the many fish eggs.
[0003] However, traditional screening methods often rely on manual labor, which involves observing and identifying damaged fish eggs (normal fish eggs are black, while damaged fish eggs are white) and then manually picking them out. This method is inefficient, labor-intensive, and causes fatigue due to long hours of work. It is also easy to miss some damaged fish eggs, making it difficult to meet the needs of rapid screening in large-scale production.
[0004] Therefore, a screening device for caviar production is needed to solve this problem. Utility Model Content
[0005] This invention proposes a screening device for caviar production. By setting up an identification camera and a defective egg screening mechanism, it can automatically screen out the defective fish eggs from a large number of fish eggs, solving the problems of low efficiency and high labor costs of manual screening.
[0006] This utility model is implemented as follows: a screening device for caviar production includes a conveyor belt, a feeding hopper connected to the upper end of the conveyor belt, and multiple defective roe screening mechanisms arranged at the upper end of the conveyor belt, the defective screening mechanisms including:
[0007] A support frame, in which a threaded rod is rotatably connected, and a servo motor is connected to the side end of the support frame, with the drive end of the servo motor connected to the threaded rod;
[0008] A movable box is slidably connected inside a support frame, and a connecting block is connected to the upper end of the movable box, with the connecting block threadedly connected to the outer end of a threaded rod.
[0009] An electric reciprocating push rod includes a drive motor, a drive plate, a connecting rod, and a pressing rod. The drive motor is connected inside the movable box, and its drive end is connected to the drive plate. The two ends of the connecting rod are rotatably connected to the side end of the drive plate and the upper end of the pressing rod, respectively.
[0010] A needle, which is connected to the lower end of a pressure rod, and barbs are provided on both sides of the needle tip at the lower end of the needle;
[0011] A laser measuring device is connected to the side of the support frame and projects a measuring laser onto the outside of the moving box.
[0012] An identification camera is installed at the upper end of the conveyor belt. The identification camera is based on a pre-established feature model of damaged fish eggs.
[0013] As a preferred embodiment of the screening device for caviar production according to this utility model, the surface of the conveyor belt is provided with anti-slip texture, and a drive roller and a support roller are provided inside the conveyor belt, with a drive device connected to the side end of the drive roller.
[0014] In a preferred embodiment of the screening device for caviar production according to this utility model, the lower end of the feeding hopper has a feeding port located on the upper surface of the conveyor belt, and a smoothing plate is connected to the upper end of the conveyor belt. The smoothing plate is located on the side of the feeding hopper, and there is a gap between its lower end and the conveyor belt. The height of the gap is slightly higher than the diameter of a single caviar grain.
[0015] As a preferred embodiment of the screening device for caviar production according to this utility model, the defective roe screening mechanism further includes a support frame, the lower end of which is connected to the side baffle of the conveyor belt, and a telescopic cylinder is connected between the support frame and the support frame.
[0016] As a preferred embodiment of the screening device for caviar production according to this utility model, the defective caviar screening mechanism further includes a second telescopic cylinder, which is connected to the lower end of a support frame. The lower end of the second telescopic cylinder is connected to a cleaning plate, and a rectangular groove is opened on the side of the cleaning plate, allowing the needle to be located within the rectangular groove.
[0017] As a preferred embodiment of the screening device for caviar production according to this utility model, a controller is provided at the outer end of the conveyor belt, which is connected to the defective roe screening mechanism and the identification camera respectively.
[0018] In a preferred embodiment of the screening device for caviar production according to this utility model, a collection box is connected to the outer end of the conveyor belt, and the collection box is located at the lower end of the cleaning plate.
[0019] The beneficial effects of this utility model are:
[0020] 1. This screening device for caviar production is equipped with a recognition camera that can analyze and identify spoiled fish eggs. A support frame, threaded rod, and servo motor drive a moving box. A drive motor, pressing rod, and piercing needle move the needle downwards. With the assistance of a laser measuring device, the position of the piercing needle is determined. The recognition camera then analyzes and identifies the location of the spoiled fish eggs. When the spoiled fish egg moves to the lower end of the support frame, the piercing needle moves to the upper end of the egg and then moves downwards to pierce it. The upward movement of the piercing needle moves the egg upwards, thus screening out the spoiled fish eggs from among many eggs, ensuring the overall quality of the product. The entire screening process is automated, reducing manual intervention, lowering labor costs, and improving production efficiency. It can meet the needs of rapid screening in large-scale production.
[0021] 2. The screening device for caviar production includes a first telescopic cylinder that raises the support frame, allowing the needles to move away from the top of the conveyor belt under the movement of the moving box. The needles are then moved to the top of the collection box. A second telescopic cylinder and a cleaning plate are also included. When the needles move to the top of the collection box, they also move into the rectangular slot of the cleaning plate. The second telescopic cylinder lowers the cleaning plate, which pushes the damaged fish eggs at the outer end of the needles, causing them to fall into the collection box. This device can automatically collect the damaged fish eggs. Attached Figure Description
[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0023] Figure 1 This is an overall structural diagram of a screening device for caviar production according to the present invention;
[0024] Figure 2 This is a structural diagram of the support frame of a screening device for caviar production according to the present invention;
[0025] Figure 3 This is a structural diagram of the threaded rod of a screening device for caviar production according to this utility model;
[0026] Figure 4 This is a structural diagram of the moving box of a screening device for caviar production according to this utility model;
[0027] Figure 5 This is a side view of the screening device for caviar production according to the present invention.
[0028] The markings in the diagram are: 1. Conveyor belt; 2. Feed hopper; 3. Support frame; 4. Threaded rod; 5. Servo motor; 6. Moving box; 7. Drive motor; 8. Pressing rod; 9. Needle; 10. Laser measuring device; 11. Recognition camera; 12. Flat plate; 13. Support frame; 14. Telescopic cylinder No. 1; 15. Telescopic cylinder No. 2; 16. Cleaning plate; 17. Collection box. Detailed Implementation
[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.
[0030] The laser measuring device 10, telescopic cylinder 14, and telescopic cylinder 15 in this utility model are all common sensors and electrical devices in the prior art. This application will not elaborate on their models or internal structures.
[0031] Please see Figure 1-5 A screening device for caviar production includes a conveyor belt 1, a feeding hopper 2 connected to the upper end of the conveyor belt 1, and multiple defective screening mechanisms arranged at the upper end of the conveyor belt 1. The defective screening mechanisms include:
[0032] Support frame 3, threaded rod 4 is rotatably connected inside support frame 3, servo motor 5 is connected to the side end of support frame 3, and the drive end of servo motor 5 is connected to threaded rod 4;
[0033] The movable box 6 is slidably connected inside the support frame 3. A connecting block is connected to the upper end of the movable box 6, and the connecting block is threadedly connected to the outer end of the threaded rod 4.
[0034] The electric reciprocating push rod includes a drive motor 7, a drive plate, a connecting rod, and a pressing rod 8. The drive motor 7 is connected inside the movable box 6 and its drive end is connected to the drive plate. The two ends of the connecting rod are rotatably connected to the side end of the drive plate and the upper end of the pressing rod 8, respectively.
[0035] Needle 9 is connected to the lower end of the pressure rod 8. The needle tip at the lower end of needle 9 is provided with barbs on both sides.
[0036] Laser measuring device 10 is connected to the side of support frame 3 and it projects the measuring laser onto the outer end of moving box 6.
[0037] An identification camera 11 is installed at the upper end of the conveyor belt 1. The identification camera 11 is based on a pre-established bad caviar feature model.
[0038] In this embodiment: the support frame 3 is used to support the threaded rod 4, and it can also constrain the moving box 6 so that it cannot rotate within the support frame 3. The servo motor 5 is started, which drives the threaded rod 4 to rotate. The rotation of the threaded rod 4 will drive the moving box 6 to move, thereby adjusting the position of the needle 9. The electric reciprocating push rod can drive the needle 9 to move down. Specifically, the drive motor 7 is started, which will drive the drive plate at its drive end to rotate. The drive plate, through the action of the connecting rod, will drive the pressing rod 8 to move up and down, thereby driving the needle 9 to move up and down. The barb at the lower end of the needle 9 can hook the fish egg after the needle 9 is inserted, thereby fixing it, so that the fish egg can be taken out from the conveyor belt 1. The laser measuring device 10 is used to measure and know the position of the needle 9. The recognition camera 11 can analyze and identify the damaged fish egg and determine its position.
[0039] As a technical optimization of this utility model, the surface of the conveyor belt 1 is provided with anti-slip texture, and the conveyor belt 1 is provided with a drive roller and a support roller, and the drive roller is connected to a drive device at its side end.
[0040] In this embodiment, the conveyor belt 1 can rotate through the driving device and the driving roller, thereby driving the fish eggs at its upper end to move.
[0041] As a technical optimization of this utility model, the lower end of the feeding hopper 2 has a feeding port located on the upper surface of the conveyor belt 1. The upper end of the conveyor belt 1 is connected to a flat plate 12, which is located on the side of the feeding hopper 2. There is a gap between the lower end of the flat plate 1 and the conveyor belt 1, and the height of the gap is slightly higher than the diameter of a single caviar grain.
[0042] In this embodiment, the smoothing plate 12 can smooth the fish eggs at the upper end of the conveyor belt 1, and can smooth the accumulated fish eggs into a single layer, thereby making it easier for the identification camera 11 to observe.
[0043] As a technical optimization of this utility model, the defective screening mechanism also includes a support frame 13, the lower end of which is connected to the side baffle of the conveyor belt 1, and a telescopic cylinder 14 is connected between the support frame 13 and the support frame 3.
[0044] In this embodiment: the support frame 13 is used to support the first telescopic cylinder 14 and the support frame 3. The first telescopic cylinder 14 can adjust the height of the support frame 3. When the support frame 3 is raised to the highest point, the lowest point of the needle 9 is higher than the side baffle of the conveyor belt 1, and the side baffle of the conveyor belt 1 will not be able to obstruct the movement of the needle 9. At this time, the moving box 6 will be able to drive the needle 9 away from the upper end of the conveyor belt 1.
[0045] As a technical optimization of this utility model, the defective screening mechanism also includes a second telescopic cylinder 15, which is connected to the lower end of the support frame 3. The lower end of the second telescopic cylinder 15 is connected to a cleaning plate 16, and a rectangular groove is opened on the side of the cleaning plate 16, so that the needle 9 can be located in the rectangular groove.
[0046] In this embodiment: the second telescopic cylinder 15 is used to drive the cleaning plate 16 to move. When the needle 9 leaves the upper end of the conveyor belt 1 under the drive of the moving box 6, the needle 9 will be able to be located in the rectangular groove of the cleaning plate 16, and the barb at the lower end of the needle 9 is parallel to the rectangular groove, so as not to hinder the movement of the cleaning plate 16.
[0047] As a technical optimization of this utility model, a controller is provided at the outer end of the conveyor belt 1, which is connected to the defective screening mechanism and the identification camera 11 respectively.
[0048] In this embodiment: the identification camera 11 analyzes and determines the location of the damaged fish eggs, and the controller controls the operation of the damaged fish egg screening mechanism based on the information from the identification camera 11, thereby automatically screening the damaged fish eggs.
[0049] As a technical optimization of this utility model, a collection box 17 is connected to the outer end of the conveyor belt 1, and the collection box 17 is located at the lower end of the cleaning plate 16.
[0050] In this embodiment: the collection box 17 is used to collect the fish eggs that have fallen off the cleaning plate 16.
[0051] The working principle and usage process of this utility model are as follows: Fish eggs are poured into the feeding hopper 2, and the fish eggs slide from the discharge port at the lower end of the feeding hopper 2 onto the conveyor belt 1, where they are carried away by the conveyor belt 1. Then, the fish eggs pass through the smoothing plate 12, which spreads the accumulated fish eggs into a single layer. The single layer of fish eggs continues to move to the lower end of the identification camera 11. The identification camera 11 analyzes and identifies the damaged fish eggs and observes their positions. Based on the information from the identification camera 11, the controller assigns the damaged fish eggs to the defective fish egg screening mechanism. When the damaged fish eggs move to the lower end of the support frame 3, the servo motor 5 drives the threaded rod 4 to rotate, causing the moving box 6 to drive the piercing needle 9. The needle 9 is moved to the top of the fish egg, and then the motor 7 is driven to run, causing the pressing rod 8 to reciprocate once. The needle 9 moves down to pierce the damaged fish egg, and moves up to move the damaged fish egg up, thus selecting the damaged fish egg from the many fish eggs. The first telescopic cylinder 14 drives the support frame 3 to rise, and the moving box 6 moves the needle 9 to the top of the collection box 17. At this time, the needle 9 will be located in the rectangular groove of the cleaning plate 16. Then the second telescopic cylinder 15 drives the cleaning plate 16 to move down, removing the fish egg at the outer end of the needle 9. The fish egg will fall into the collection box 17, and then the needle 9 returns to the initial position, ready for the next screening operation.
[0052] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0053] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.
Claims
1. A screening device for caviar production, comprising a conveyor belt (1), characterized in that: The upper end of the conveyor belt (1) is connected to a feeding hopper (2), and the upper end of the conveyor belt (1) is provided with multiple defective material screening mechanisms, including: A support frame (3) is provided, and a threaded rod (4) is rotatably connected inside the support frame (3). A servo motor (5) is connected to the side end of the support frame (3), and the drive end of the servo motor (5) is connected to the threaded rod (4). The movable box (6) is slidably connected inside the support frame (3). A connecting block is connected to the upper end of the movable box (6), and the connecting block is threadedly connected to the outer end of the threaded rod (4). The electric reciprocating push rod includes a drive motor (7), a drive plate, a connecting rod, and a pressing rod (8). The drive motor (7) is connected inside the movable box (6), and its drive end is connected to the drive plate. The two ends of the connecting rod are rotatably connected to the side end of the drive plate and the upper end of the pressing rod (8), respectively. A needle (9) is connected to the lower end of a pressure rod (8), and barbs are provided on both sides of the needle tip at the lower end of the needle (9); A laser measuring device (10) is connected to the side of the support frame (3) and it projects a measuring laser onto the outside of the moving box (6). The upper end of the conveyor belt (1) is provided with an identification camera (11), which is based on a pre-established feature model of broken fish eggs.
2. The screening device for caviar production according to claim 1, characterized in that: The surface of the conveyor belt (1) is provided with anti-slip texture, and the conveyor belt (1) is provided with a drive roller and a support roller, and the drive roller is connected to a drive device at its side end.
3. The screening device for caviar production according to claim 1, characterized in that: The lower end of the feeding hopper (2) has a feeding port located on the upper surface of the conveyor belt (1). The upper end of the conveyor belt (1) is connected to a flat plate (12). The flat plate (12) is located on the side of the feeding hopper (2). There is a gap between its lower end and the conveyor belt (1). The height of the gap is slightly higher than the diameter of a single caviar grain.
4. The screening device for caviar production according to claim 1, characterized in that: The defective screening mechanism also includes a support frame (13), the lower end of which is connected to the side baffle of the conveyor belt (1), and a telescopic cylinder (14) is connected between the support frame (13) and the support frame (3).
5. A screening device for caviar production according to claim 1, characterized in that: The defective screening mechanism also includes a second telescopic cylinder (15), which is connected to the lower end of a support frame (3). The lower end of the second telescopic cylinder (15) is connected to a cleaning plate (16), and a rectangular slot is provided on the side of the cleaning plate (16), in which the needle (9) can be located.
6. The screening device for caviar production according to claim 1, characterized in that: A controller is provided at the outer end of the conveyor belt (1), which is connected to the defective screening mechanism and the identification camera (11).
7. A screening device for caviar production according to claim 1, characterized in that: The outer end of the conveyor belt (1) is connected to a collection box (17), which is located at the lower end of the cleaning plate (16).