A device for removing spines for reducing the loss of vacuum-packed frozen seafood

By designing an automated deboning device that utilizes a motor to drive the rotation of the blade mesh and the reciprocating motion of the blades, the problem of low efficiency in manual deboning has been solved. This achieves efficient removal of sharp spines from the surface of seafood and expands the applicability of the device, while avoiding production waste and cross-contamination.

CN120660745BActive Publication Date: 2026-07-14CHUZHOU UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHUZHOU UNIV
Filing Date
2025-07-15
Publication Date
2026-07-14

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Abstract

The application discloses a kind of reduce the loss of frozen seafood vacuum packaging and use the device of removing thorn, it is related to seafood removing thorn technical field, the device includes box, removing thorn subassembly, drive assembly, the box one side is open and has feed inlet, the opposite side wall of the box is connected with rotary plate by bearing, two The rotary plate between fixedly connected with knife net, the inner wall of the box is fixedly connected with fixed frame;The removing thorn subassembly is arranged between two rotary plates, for improving the removing thorn effect of device;The drive assembly is arranged on fixed frame, for driving removing thorn subassembly to rotate and remove thorn.The application is rotated by motor drive knife net, reciprocating motion is coordinated trapezoidal blade and arc blade, realize the automatic removal of shrimp crab and other seafood surface sharp thorn, change the problem of low efficiency of traditional manual removing thorn, can match modern packaging line speed, avoid the production capacity waste caused by labor shortage in fishing season.
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Description

Technical Field

[0001] This invention relates to the field of seafood deboning technology, specifically a deboning device for reducing losses during vacuum packaging of frozen seafood. Background Technology

[0002] Currently, there is no precedent in the industry for removing the spines from shrimp and crab seafood before packaging. Vacuum packaging is also difficult for seafood with spines, such as crabs, and non-vacuum environments significantly shorten shelf life. The sharp spines on the surface of crustaceans like crabs and lobsters, such as the hard spines at the joints of their claws, are highly hard and irregularly distributed, easily piercing packaging materials under the negative pressure of vacuum packaging. The rostrum of shrimp heads becomes more brittle after freezing, making them prone to breakage and embedding in the packaging during vacuum sealing, causing leakage.

[0003] Current mainstream deboning methods rely on manual operation, with workers using handheld tools such as tweezers or scissors for surface treatment. This is extremely inefficient and cannot keep up with the speed of modern packaging lines. During peak seasons, such as the fishing season, labor shortages further amplify the bottleneck, leading to wasted production capacity. When handling frozen seafood manually, bacteria carried by the human body or incomplete cleaning of tools can cause cross-contamination, which is detrimental to the preservation of aquatic products.

[0004] Based on this, a de-sting device for reducing losses during vacuum packaging of frozen seafood is now provided, which can eliminate the drawbacks of existing devices. Summary of the Invention

[0005] The purpose of this invention is to provide a de-spiking device for reducing losses during vacuum packaging of frozen seafood, thereby solving the problem of low efficiency in manually removing surface spikes from crustaceans such as crabs and lobsters in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A de-sting device for reducing losses during vacuum packaging of frozen seafood includes a box, a de-sting assembly, and a drive assembly. The box has an inlet on one side, and rotating plates are connected to opposite side walls of the box via bearings. A blade mesh is fixedly connected between the two rotating plates, and a fixing frame is fixedly connected to the inner wall of the box.

[0008] The puncture removal assembly is positioned between the two rotating plates to improve the puncture removal effect of the device;

[0009] The drive assembly is mounted on a fixed frame and is used to drive the spiking removal assembly to rotate and remove spiking.

[0010] Based on the above technical solutions, the present invention also provides the following optional technical solutions:

[0011] In one alternative: the drive assembly includes a third gear and a gear ring; the fixed frame is equipped with a motor, a bevel gear set, and a third gear; the motor drives the bevel gear set to rotate via a belt drive; the side wall of the housing is rotatably equipped with a third gear via a shaft; the bevel gear set is connected to the third gear and drives the third gear to rotate; one of the rotating plates is fixedly connected to a gear ring, and the third gear meshes with the gear ring.

[0012] In one alternative embodiment: the burr removal assembly includes a first rack, a second rack, and a second gear. A plurality of guide rails are fixedly connected to the periphery of the blade net. A first rack is slidably disposed on the sidewall of each guide rail. A plurality of fourth gears are rotatably disposed on the periphery of the blade net via a rotating shaft. The fourth gears mesh with the first rack. A plurality of second racks are disposed on the periphery of the blade net. The fourth gears mesh with the second racks. The plurality of second racks are connected by hinges. Each of the plurality of second racks is fixedly connected to an arc-shaped blade. Each of the plurality of first racks is fixedly connected to a trapezoidal blade. The shape of the blade net corresponds to the shapes of the trapezoidal and arc-shaped blades. The blade net is slidably connected to the trapezoidal and arc-shaped blades.

[0013] In one alternative: a number of second rack sidewalls are fixed with handles by bolts, the motor output end is fixedly connected with a second gear, the fixing frame is rotatably provided with two symmetrical first gears via a rotating shaft, the upper surfaces of the two first gears are fixedly connected with eccentric rods, the two first gears mesh with the second gears, the two eccentric rods are slidably engaged with a moving frame, and the moving frame is slidably connected to the handle.

[0014] In one alternative: one end of the first rack is connected to the rotating plate via a V-shaped spring, and the other end is connected to the gear ring via a V-shaped spring; one end of the arc-shaped blade is connected to the rotating plate via a W-shaped spring, and the other end is connected to the gear ring via a W-shaped spring.

[0015] In one alternative: the opposite sidewalls of the housing are each provided with a number of rollers that rotate via a pivot, and the rollers abut against the rotating plate.

[0016] In one alternative: the lower surface of the housing is provided with a plurality of casters, and each of the casters is provided with a wheel lock.

[0017] In one alternative: the inner wall of the blade mesh is fixedly connected with four circumferentially distributed inclined plates.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. This invention uses a motor to drive the blade mesh to rotate, combined with the reciprocating motion of trapezoidal and arc-shaped blades, to achieve automated removal of sharp spines from the surface of seafood such as shrimp and crab. This changes the problem of low efficiency in traditional manual desting, can be matched with the speed of modern packaging lines, and avoids production waste caused by labor shortages during peak fishing seasons.

[0020] 2. The inclined plate on the inner wall of the blade mesh of the present invention can transport seafood into the box when the motor rotates forward, and transport the deboned seafood out when it rotates backward, ensuring that the seafood moves in an orderly manner in the device, which not only ensures the smooth progress of the deboning process, but also facilitates unloading and improves the working efficiency of the device.

[0021] 3. The knife net used in this invention is an ultra-thin knife net. When the whiskers or pierces of seafood enter the knife net, they will be cut by the trapezoidal and arc-shaped blades that reciprocate at high frequency. The trapezoidal blades are suitable for small shrimp seafood, and the arc-shaped blades are suitable for large crab seafood. This device is applicable to a wide variety of seafood and has a wide range of applications.

[0022] 4. In this invention, the first rack is connected to the rotating plate and the toothed ring via a V-shaped spring, and the arc-shaped blade is connected to the rotating plate and the toothed ring via a W-shaped spring. This elastic connection method can play a buffering role during the puncture removal process, reduce the wear of the device components, and extend the service life of the device. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the internal structure of the housing of the present invention.

[0025] Figure 3 This is a schematic diagram of the puncture removal component of the present invention.

[0026] Figure 4 This is a front view of the puncture removal component of the present invention.

[0027] Figure 5 This is a schematic diagram of the first rack structure of the present invention.

[0028] Figure 6 This is a schematic diagram of the second rack structure of the present invention.

[0029] Figure 7 This is a schematic diagram of the disassembly of the arc-shaped blade of the present invention.

[0030] Figure label annotations: 1. Box body, 2. Moving wheel, 3. Rotating plate, 4. Inclined plate, 5. First gear, 6. Roller, 7. Handle, 8. Moving frame, 9. Fixing frame, 10. Motor, 11. Eccentric rod, 12. Second gear, 13. Belt drive component, 14. Bevel gear set, 15. Third gear, 16. Gear ring, 17. Hinge, 18. Blade net, V-type spring, 19. V-type spring, W-type spring, 20. W-type spring, 21. First rack, 22. Guide rail, 23. Fourth gear, 24. Second rack, 25. Trapezoidal blade, 26. Arc blade. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0032] In one embodiment, such as Figures 1-7 As shown, a de-sting device for reducing the loss of vacuum packaging of frozen seafood includes a box body 1, a de-sting component, and a drive component. The box body 1 has an open feed port on one side. The opposite side walls of the box body 1 are connected to rotating plates 3 by bearings. A blade mesh 18 is fixedly connected between the two rotating plates 3. A fixing frame 9 is fixedly connected to the inner wall of the box body 1.

[0033] The puncture removal assembly is positioned between the two rotating plates 3 to improve the puncture removal effect of the device;

[0034] The drive assembly is mounted on the fixed frame 9 and is used to drive the spiking removal assembly to rotate and remove spiking.

[0035] In one embodiment, the drive assembly includes a third gear 15 and a gear ring 16. A motor 10, a bevel gear set 14, and a third gear 15 are mounted on a fixed frame 9. The motor 10 drives the bevel gear set 14 to rotate via a belt drive 13. The third gear 15 is rotatably mounted on the side wall of the housing 1 via a shaft. The bevel gear set 14 is connected to the third gear 15, driving the third gear 15 to rotate. A gear ring 16 is fixedly connected to a rotating plate 3, and the third gear 15 meshes with the gear ring 16.

[0036] The motor 10 is started, and the motor 10 drives the bevel gear set 14 to rotate through the belt drive 13. The bevel gear set 14 drives the third gear 15 to rotate, the third gear 15 drives the gear ring 16 to rotate, the gear ring 16 drives the rotating plate 3 to rotate, and the rotating plate 3 drives the knife net 18 to rotate. When the sharp spikes of the shrimp and crab enter the mesh of the knife net 18, the knife net 18 can rotate and remove the spikes from the shrimp and crabs put into the box 1.

[0037] In one embodiment, the burr removal assembly includes a first rack 21, a second rack 24, and a second gear 12. A plurality of guide rails 22 are fixedly connected to the periphery of the blade net 18. The first rack 21 is slidably disposed on the sidewall of the guide rail 22. A plurality of fourth gears 23 are rotatably disposed on the periphery of the blade net 18 via a rotating shaft. The fourth gears 23 mesh with the first rack 21. A plurality of second racks 24 are disposed on the periphery of the blade net 18. The fourth gears 23 mesh with the second racks 24. The plurality of second racks 24 are connected by hinges 17. Each of the plurality of second racks 24 is fixedly connected to an arc-shaped blade 26. Each of the plurality of first racks 21 is fixedly connected to a trapezoidal blade 25. The shape of the blade net 18 corresponds to the shape of the trapezoidal blade 25 and the arc-shaped blade 26. The blade net 18 is slidably connected to the trapezoidal blade 25 and the arc-shaped blade 26.

[0038] While the blade net 18 rotates to remove barbs, the handle 7 drives the second toothed rack 24 to move laterally back and forth. The second toothed rack 24 drives the curved blade 26 to move back and forth. The curved blade 26 cooperates with the blade net 18. The curved blade 26 fits tightly with the shape of the blade net 18, cutting the barbs that have entered the blade net 18. Because the curved blade 26 and the corresponding blade net have a small contact area with the seafood, greater pressure can be generated under the action of gravity, making it easier to process large-volume seafood with hard shells such as crabs.

[0039] It can effectively remove the bones from some types of crab seafood, and has a good bone-removing effect;

[0040] While the second rack 24 moves laterally back and forth, it drives the first rack 21 to reciprocate through the fourth gear 23. The first rack 21 drives the arc-shaped blade 26 to reciprocate. The arc-shaped blade 26 works with the blade net 18 to de-skewer and cut seafood. The trapezoidal blade 25 and the corresponding blade net 18 have a large contact area with the seafood, making them suitable for processing small-sized seafood with many whiskers, such as shrimp.

[0041] In one embodiment, a number of second racks 24 are fixed with handles 7 by bolts on their sidewalls. The output end of the motor 10 is fixedly connected to a second gear 12. The fixed frame 9 is rotatably provided with two symmetrical first gears 5 via a rotating shaft. An eccentric rod 11 is fixedly connected to the upper surface of each of the two first gears 5. Both first gears 5 mesh with the second gear 12. The two eccentric rods 11 are slidably engaged with a movable frame 8. The movable frame 8 is slidably connected to the handle 7.

[0042] Motor 10 drives the second gear 12 to rotate, the second gear 12 drives the two first gears 5 to rotate in the same direction, the first gears 5 drive the two eccentric rods 11 to rotate, the two eccentric rods 11 are initially in the same position, the two eccentric rods 11 drive the moving frame 8 to move, and the moving frame 8 drives the handle 7 to move left and right laterally.

[0043] In one embodiment, one end of the first rack 21 is connected to the rotating plate 3 via a V-shaped spring 19, and the other end is connected to the gear ring 16 via a V-shaped spring 19. One end of the arc-shaped blade 26 is connected to the rotating plate 3 via a W-shaped spring 20, and the other end is connected to the gear ring 16 via a W-shaped spring 20.

[0044] The first rack is connected to the rotating plate and the toothed ring via a V-shaped spring, and the arc-shaped blade is connected to the rotating plate and the toothed ring via a W-shaped spring. This elastic connection method can play a buffering role during the puncture removal process, reduce the wear of the device components, and extend the service life of the device.

[0045] In one embodiment, the opposite sidewalls of the housing 1 are each equipped with a plurality of rollers 6 that rotate via a pivot, and the rollers 6 abut against the rotating plate 3. This makes the rotation of the rotating plate 3 more stable.

[0046] In one embodiment, a plurality of casters 2 are provided on the lower surface of the housing 1, and each caster 2 is provided with a wheel lock.

[0047] It facilitates the movement of the device.

[0048] In one embodiment, four circumferentially distributed inclined plates 4 are fixedly connected to the inner wall of the blade mesh 18.

[0049] Live fish, shellfish, and other seafood naturally secrete a layer of mucus on their bodies. If a large amount of seafood enters this device, the mucus lubricates the seafood, and gravity causes the seafood to gradually spread out inside the device, or even slide off. When the device starts the deboning process, the seafood may even spill out of the device due to its rotation. In this invention, loading and unloading are done on the same side. Four inclined plates 4 are installed on the surface of the roller-type blade mesh 18 inside the housing 1. During loading, the blade mesh 18 drives the inclined plates 4 to rotate, causing the seafood to move inward along the inclined trajectory of the inclined plates 4 as it is turned. This ensures that the seafood is constantly turned inward within the roller-type blade mesh 18 and does not spill outward. During unloading, simply reversing the motor 10 allows the deboned seafood to be easily unloaded along the trajectory of the inclined plates 4 by rotating the roller-type blade mesh 18 and the inclined plates 4, effectively improving the unloading efficiency of the device.

[0050] The above embodiments disclose a deburring device for reducing losses during vacuum packaging of frozen seafood. Its specific working principle and process are as follows:

[0051] S1: Start motor 10. Motor 10 drives bevel gear set 14 to rotate through belt drive component 13. Bevel gear set 14 drives third gear 15 to rotate. Third gear 15 drives gear ring 16 to rotate. Gear ring 16 drives rotating plate 3 to rotate. Rotating plate 3 drives knife net 18 to rotate. When the sharp spikes of shrimp and crabs enter the mesh of knife net 18, knife net 18 can rotate and remove the spikes from shrimp and crabs put into box 1.

[0052] When the motor 10 drives the blade net 18 to rotate in the forward direction, under the action of the inclined plate 4, similar to the principle of a screw rod, the shrimp and crabs can be transported into the box 1.

[0053] S2: While the blade mesh 18 is rotating to remove thorns, the motor 10 drives the second gear 12 to rotate, the second gear 12 drives the two first gears 5 to rotate in the same direction, the first gears 5 drive the two eccentric rods 11 to rotate, the two eccentric rods 11 are initially in the same position, the two eccentric rods 11 drive the moving frame 8 to move, the moving frame 8 drives the handle 7 to move horizontally left and right, the handle 7 drives the second rack 24 to move horizontally back and forth left and right, the second rack 24 drives the arc blade 26 to move back and forth, the arc blade 26 cooperates with the blade mesh 18, the arc blade 26 fits the shape of the blade mesh 18 tightly, and cuts the thorns that have entered the blade mesh 18. Because the arc blade 26 and the corresponding shaped blade mesh have a small contact area with the seafood, greater pressure can be generated under the action of gravity, which is convenient for processing large-volume seafood with hard shells such as crabs;

[0054] It can effectively remove the bones from some types of crab seafood, and has a good bone-removing effect;

[0055] While the second rack 24 moves laterally back and forth, it drives the first rack 21 to reciprocate through the fourth gear 23. The first rack 21 drives the arc-shaped blade 26 to reciprocate. The arc-shaped blade 26 works with the blade net 18 to de-skewer and cut seafood. The trapezoidal blade 25 and the corresponding blade net 18 have a large contact area with the seafood, making them suitable for processing small-sized seafood with many whiskers, such as shrimp.

[0056] The knife net 18 used in this invention is an ultra-thin knife net. When the whiskers or pierces of seafood enter the knife net 18, they will be cut by the trapezoidal blade 25 and the arc-shaped blade 26 with high-frequency reciprocating motion. The trapezoidal blade 25 is suitable for small shrimp seafood, and the arc-shaped blade 26 is suitable for large crab seafood. This device is suitable for a wide variety of seafood and has a wide range of applications.

[0057] S3: After the seafood products are deboned, control the motor 10 to rotate in the opposite direction, which drives the blade net 18 to rotate in the opposite direction. Under the action of the inclined plate 4, the deboned shrimp and crabs are transported from the inside of the box 1 to the outside, making it convenient for staff to pick them up.

[0058] Live fish, shellfish, and other seafood naturally secrete a layer of mucus on their bodies. If a large amount of seafood enters this device, the mucus lubricates the seafood, and gravity causes the seafood to gradually spread out inside the device, or even slide off. When the device starts the deboning process, the seafood may even spill out of the device due to its rotation. In this invention, loading and unloading are done on the same side. Four inclined plates 4 are installed on the surface of the roller-type blade mesh 18 inside the housing 1. During loading, the blade mesh 18 drives the inclined plates 4 to rotate, causing the seafood to move inward along the inclined trajectory of the inclined plates 4 as it is turned. This ensures that the seafood is constantly turned inward within the roller-type blade mesh 18 and does not spill outward. During unloading, simply reversing the motor 10 allows the deboned seafood to be easily unloaded along the trajectory of the inclined plates 4 by rotating the roller-type blade mesh 18 and the inclined plates 4, effectively improving the unloading efficiency of the device.

[0059] For ease of use and maintenance, the present invention is provided with a handle 7, which can drive the blades to reciprocate when in working condition; when the blades need to be replaced and disassembly is required, the bolts can be loosened, and the handle 7 can be rotated 90 degrees to remove a pair of hinges 17, so that all the curved blades 26 can be easily removed together, just like removing a chain. This quick-release design saves time and effort.

[0060] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A deburring device for reducing losses during vacuum packaging of frozen seafood, characterized in that, Includes a box body (1), a burr removal assembly, and a drive assembly. The box body (1) has an open feed port on one side. The opposite side walls of the box body (1) are connected to rotating plates (3) via bearings. A blade net (18) is fixedly connected between the two rotating plates (3). A fixing frame (9) is fixedly connected to the inner wall of the box body (1). The puncture removal assembly is disposed between the two rotating plates (3) to improve the puncture removal effect of the device; The drive assembly is mounted on the fixed frame (9) and is used to drive the puncture removal assembly to rotate and remove punctures; The burr removal assembly includes a first rack (21), a second rack (24), and a second gear (12). Several guide rails (22) are fixedly connected to the periphery of the blade net (18). The first rack (21) is slidably mounted on the sidewall of each guide rail (22). Several fourth gears (23) are rotatably mounted on the periphery of the blade net (18) via a rotating shaft. The fourth gears (23) mesh with the first rack (21). Several second racks (24) are mounted on the periphery of the blade net (18). The fourth gear (23) meshes with the second rack (24), and several second racks (24) are connected by hinges (17). Several second racks (24) are fixedly connected with arc-shaped blades (26), and several first racks (21) are fixedly connected with trapezoidal blades (25). The shape of the blade net (18) corresponds to the shape of the trapezoidal blades (25) and the arc-shaped blades (26). The blade net (18) is slidably connected to the trapezoidal blades (25) and the arc-shaped blades (26). A handle (7) is fixed to the side wall of several second racks (24) by bolts. The second gear (12) is fixedly connected to the output end of the motor (10). The fixing frame (9) is rotatably provided with two symmetrical first gears (5) through a rotating shaft. An eccentric rod (11) is fixedly connected to the upper surface of the two first gears (5). The two first gears (5) mesh with the second gear (12). The two eccentric rods (11) are slidably engaged with a moving frame (8). The moving frame (8) is slidably connected to the handle (7). One end of the first rack (21) is connected to the rotating plate (3) via a V-shaped spring (19), and the other end is connected to the gear ring (16) via a V-shaped spring (19). One end of the arc-shaped blade (26) is connected to the rotating plate (3) via a W-shaped spring (20), and the other end is connected to the gear ring (16) via a W-shaped spring (20).

2. The deburring device for reducing losses during vacuum packaging of frozen seafood according to claim 1, characterized in that, The drive assembly includes a third gear (15) and a gear ring (16). The fixed frame (9) is equipped with a motor (10), a bevel gear set (14), and a third gear (15). The motor (10) drives the bevel gear set (14) to rotate via a belt drive (13). The side wall of the housing (1) is provided with a third gear (15) via a shaft. The bevel gear set (14) is connected to the third gear (15) to drive the third gear (15) to rotate. One of the rotating plates (3) is fixedly connected to a gear ring (16), and the third gear (15) meshes with the gear ring (16).

3. The deburring device for reducing losses during vacuum packaging of frozen seafood according to claim 1, characterized in that, The box (1) has several rollers (6) on its opposite side walls that are rotatably mounted on a pivot, and the rollers (6) abut against the rotating plate (3).

4. The de-sting device for reducing losses during vacuum packaging of frozen seafood according to claim 1, characterized in that, The lower surface of the box (1) is provided with a number of movable wheels (2), and each of the movable wheels (2) is provided with a wheel lock.

5. A de-sting device for reducing losses during vacuum packaging of frozen seafood according to claim 1, characterized in that, The inner wall of the blade mesh (18) is fixedly connected to four circumferentially distributed inclined plates (4).