A fish killer

Abstract

The present application relates to aquatic product processing automation equipment technical field, disclose a kind of fish killing machine, including rack and sequentially link on rack's scale removing mechanism, cut abdomen mechanism, abdominal cavity mechanism and fish gall detection mechanism, abdominal cavity mechanism is equipped with abdominal block between cut abdomen mechanism.The present application is corrected by the first scale removing component and the second scale removing component cooperation guide roller posture to realize hierarchical progressive type dead angle free scale removing, solve single grade scale removing and reduce fish body deformation, abdominal block gradually opens fish abdomen incision to provide sufficient space for abdominal cavity, the arc-shaped petal of bionic petal structure is opened by centrifugal force self-adapting rotation, with flexible rotary scraping mode complete internal organs are taken out and sent into fish gall detection mechanism real-time online identification fish gall rupture, effectively avoid rigid abdominal cavity shovel and deformation fish abdominal wall interference leading to fish gall breakage, substantially reduce fish gall breakage rate, improve product quality and yield, adapt to large quantities of continuous flow line production use.

Description

Technical Field

[0001] This invention relates to the field of automated equipment for aquatic product processing, and in particular to a fish-killing machine. Background Technology

[0002] In the fish processing industry, fish killing is a crucial step in aquatic product processing. Currently, existing fish killing machines can perform continuous operations such as descaling, gutting, and eviscerating. They typically employ a production line frame consisting of a conveyor belt or guide trough, with multiple sets of rigid scraping rollers or grinding rollers arranged sequentially along the conveying direction to scrape and remove scales from the fish's surface. Subsequently, a rotating disc cutter or reciprocating cutter cuts the fish's belly. Finally, a rigid scraper or auger is used as the eviscerating tool to scrape or screw out the internal organs from the abdominal cavity along a fixed path. During operation, the fish is placed at the feeding end manually or by a robotic arm and passes through each station sequentially to complete the corresponding process. This structural form can replace some manual operations and improve processing efficiency to a certain extent.

[0003] However, when the fish is subjected to strong squeezing and scraping by rigid scraping rollers, the abdominal muscle tissue of the fish will become significantly relaxed and deformed. This will cause changes in the internal space of the fish's abdomen and the relative positions of the internal organs. If the rigid scraper or auger used in subsequent processes still follows the preset fixed path for scooping, the scooping tool is prone to interfering with the deformed inner wall of the fish's abdomen, resulting in incomplete scooping or internal organ residue. It is also very easy to scrape or squeeze the gallbladder. Once the gallbladder is ruptured, the bile leakage will contaminate the fish meat, causing it to taste bitter. If it cannot be detected and cleaned in time, it will seriously affect the quality of the finished product, making it difficult to guarantee the yield rate of the product. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a fish-killing machine.

[0005] The present invention provides a fish killing machine, including a frame and a descaling mechanism, a evisceration mechanism, a gutting mechanism and a fish gallbladder detection mechanism connected in sequence on the frame. A gutting mechanism and an evisceration mechanism are provided between the evisceration mechanism and the evisceration mechanism. The width of the gutting mechanism gradually increases along the fish conveying direction. The descaling mechanism is located at the feed end of the frame and includes a number of primary descaling components, guide rollers, and secondary descaling components arranged sequentially along the fish conveying direction. The primary descaling components scrape off the thick scales on the back and belly areas of the fish that are fed into the machine. After the fish is corrected in posture by the guide rollers, it is guided into the secondary descaling components, which remove the fine scales remaining in the dead corner areas of the tail and fin roots. The evisceration mechanism includes a fourth drive motor and an evisceration component connected to the output end of the fourth drive motor. The evisceration component is a biomimetic spiral structure, which includes a spiral disc connected to the output end of the fourth drive motor and multiple arc-shaped spirals arranged circumferentially along the spiral disc. The roots of the multiple arc-shaped spirals are all hinged to the side wall of the spiral disc. When the fourth drive motor drives the spiral disc to rotate, the multiple arc-shaped spirals rotate and open by centrifugal force to remove the fish's internal organs and send them into the fish gallbladder detection mechanism for real-time detection.

[0006] Furthermore, the primary descaling assembly includes two elastic descaling members symmetrically arranged at the feed end of the frame. One end of each elastic descaling member is rotatably connected to the frame, and the other end is connected to a first drive motor mounted on the frame.

[0007] Furthermore, the guide roller assembly includes two symmetrically arranged guide rollers, which are rotatably mounted on the frame.

[0008] Furthermore, the secondary descaling assembly includes two sets of descaling rollers arranged side by side, one set of the descaling rollers is connected to a second drive motor, and the two sets of descaling rollers are connected to each other by a synchronous belt mechanism.

[0009] Furthermore, the frame is also provided with a lead screw adjustment mechanism and a slider slide rail structure. The lead screw adjustment mechanism is used to drive the two sets of descaling rollers to slide along the slider slide rail structure to adjust the distance between the descaling rollers and the guide rollers.

[0010] Furthermore, the end of the arc-shaped petal furthest from its root has a blunt, rounded end structure.

[0011] Furthermore, the abdominal support block is U-shaped.

[0012] Furthermore, the fish gallbladder detection mechanism includes a detection box located on one side of the evisceration device. The detection box contains an ultraviolet lamp and a detection camera. The ultraviolet light emitted by the ultraviolet lamp irradiates the fish viscera removed by the evisceration device, exciting the fish bile to produce characteristic fluorescent signals. The detection camera is aimed at the area irradiated by the ultraviolet lamp to collect images of the fish viscera. The detection camera has a built-in vision module, which performs real-time recognition and analysis on the images of the fish viscera collected by the detection camera. When the characteristic fluorescent signal is recognized, it is determined that the fish gallbladder has ruptured.

[0013] Furthermore, the frame is also equipped with a conveying mechanism and a spraying mechanism; The conveying mechanism includes two conveyor belts mounted on the frame and arranged symmetrically, and the support block is mounted on the conveyor frame of the conveyor belts; The spraying mechanism includes multiple front spray pipes located above the descaling roller and the conveyor belt, and a rear spray head located at the end of the conveyor belt. The front spray pipes are used to spray and clean the fish body after descaling by the descaling roller and / or during the descaling process. The rear spray head is used to spray and clean the abdominal cavity of the fish body after it has been gutted by the gutting device. The multiple front spray pipes and the rear spray head are respectively connected to an external water source through corresponding water pumps.

[0014] Furthermore, a first camera and a second camera are respectively provided at the feed end and the discharge end of the frame. The first camera and the second camera are electrically connected to a controller installed on the frame. The controller is also electrically connected to the first drive motor, the second drive motor, the fourth drive motor, the ultraviolet lamp, the detection camera, the vision module and the water pump.

[0015] Compared with the prior art, the technical solution provided by this invention has the following advantages: This invention, by setting up a primary descaling component, a guide roller assembly, and a secondary descaling component connected in sequence, first scrapes away thick scales from the back and belly areas of the fish using the primary descaling component. Then, after the guide roller assembly corrects the conveying posture, the fish is fed into the secondary descaling component, where residual fine scales are removed from hard-to-reach areas such as the tail and fin roots. This achieves graded, progressive, and thorough descaling, effectively solving the problem of single-stage scraping failing to meet the descaling needs of different areas. It also reduces fish deformation. Furthermore, by setting a belly-supporting block with a gradually increasing width along the conveying direction between the abdominal cutting mechanism and the evisceration mechanism, the abdominal incision is gradually opened to both sides, fully exposing the abdominal cavity and providing sufficient space for subsequent evisceration. The machine features a space-saving design and a biomimetic vortex structure for the gutting device. Multiple arc-shaped vortexes hinged to the vortex disc rotate and open adaptively using centrifugal force when the gutting motor drives the disc to rotate. This allows the machine to gently scrape into the fish's belly, completely enveloping and rotating out the viscera. This effectively avoids the problem of traditional rigid gutting shovels interfering with the deformed inner wall of the fish's belly due to their fixed retrieval path and rigid movement, which can lead to the gallbladder being punctured or crushed. This significantly reduces the gallbladder breakage rate and minimizes bile leakage that contaminates the fish meat. The removed viscera are sent to a gallbladder testing facility for real-time detection, enabling online identification of gallbladder rupture without the need for manual post-processing. This effectively improves the quality and yield of the finished product from the automated fish-killing machine and makes it suitable for large-scale continuous production lines in aquatic product processing plants. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of a fish-killing machine provided in an embodiment of the present invention. Figure 1 ; Figure 2 A partial front view of the structure provided in an embodiment of the present invention; Figure 3This is a schematic diagram of the abdominal evacuation mechanism provided in an embodiment of the present invention; Figure 4 This is a partial structural schematic diagram provided for an embodiment of the present invention; Figure 5 A schematic diagram of the overall structure provided for an embodiment of the present invention. Figure 2 ; Figure 6 This is a schematic diagram of the detection box structure provided in an embodiment of the present invention; Figure 7 A flowchart of a fish gallbladder detection mechanism provided in an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached figures: 1. Rack; 2. Descaling mechanism; 21. Primary descaling assembly; 211. Elastic descaling component; 212. First drive motor; 22. Guide roller assembly; 221. Guide roller; 23. Secondary descaling assembly; 231. Descaling roller; 232. Second drive motor; 3. Seppuku mechanism; 31. Third drive motor; 32. Seppuku blade; 4. Abdominal evacuation mechanism; 41. Fourth drive motor; 42. Abdominal evacuation component; 421. Rotary disc; 422. Arc-shaped rotary disc; 5. Fish gallbladder testing mechanism; 51. Testing box; 511. Feed inlet; 512. Flip-top; 6. Conveying mechanism; 61. Conveyor belt; 7. Abdominal support block; 8. Sprinkler mechanism; 81. Front sprinkler pipe; 82. Rear sprinkler head; 9. First camera; 10. Second camera; 11. Controller. Detailed Implementation

[0018] The following detailed description of a specific embodiment of the present invention is provided in conjunction with the accompanying drawings. However, it should be understood that the scope of protection of the present invention is not limited to the specific embodiment.

[0019] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" 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 the technical solution of this invention 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 invention.

[0020] The present invention will be described below through several specific embodiments. To keep the following description of the embodiments clear and concise, detailed descriptions of known functions and components may be omitted. When any component of an embodiment of the present invention appears in more than one drawing, the component may be represented by the same reference numerals in each drawing.

[0021] like Figures 1-7 As shown, an embodiment of the present invention provides a fish-killing machine, including a frame 1 and a descaling mechanism 2, a blotting mechanism 3, a gutting mechanism 4 and a fish gallbladder detection mechanism 5 connected sequentially to the frame 1. A gutting mechanism 4 and a blotting mechanism 3 are provided with a blotting block 7 between them, and the width of the blotting block 7 gradually increases along the fish conveying direction. The descaling mechanism 2 is located at the feeding end of the frame 1. It includes a number of primary descaling components 21, guide roller group 22 and secondary descaling components 23 arranged sequentially along the fish body conveying direction. The primary descaling components 21 scrape off the thick scales on the back and belly areas of the fish body. After the fish body is corrected by the guide roller group 22, it is guided and fed into the secondary descaling components 23. The secondary descaling components 23 remove the fine scales remaining in the dead corner areas of the fish body tail and the base of the fins. The abdominal removal mechanism 4 includes a fourth drive motor 41 and an abdominal removal component 42 connected to the output end of the fourth drive motor 41. The abdominal removal component 42 is a biomimetic spiral structure. The biomimetic spiral structure includes a spiral disc 421 connected to the output end of the fourth drive motor 41 and multiple arc-shaped spirals 422 arranged around the circumference of the spiral disc 421. The roots of the multiple arc-shaped spirals 422 are all hinged to the side wall of the spiral disc 421. When the fourth drive motor 41 drives the spiral disc 421 to rotate, the multiple arc-shaped spirals 422 rotate and open by centrifugal force to remove the fish's internal organs and send them into the fish gallbladder detection mechanism 5 for real-time detection. After the fish is fed into the equipment, it first passes through the primary descaling component 21 to scrape off large areas of thick, dense scales on the back and belly. Then, after the fish's posture is corrected by the guide roller assembly 22, it is fed into the secondary descaling component 23. The secondary descaling component 23 then removes residual fine scales from hard-to-reach areas such as the tail and fin roots, achieving graded, progressive descaling without dead angles and reducing fish deformation. The descaled fish is then conveyed to the evisceration mechanism 3, where it cuts open the abdominal wall along the midline, breaking open the abdominal cavity. The fish then passes through gradually widening abdominal support blocks 7, which gradually open the abdominal incision to expose the abdominal cavity. Next, the fourth drive... The motor 41 drives the rotating disc 421 to rotate. Multiple arc-shaped discs 422, hinged to the side wall of the disc 421, adaptively rotate and open under centrifugal force. They extend into the fish's abdomen in a flexible scraping manner to completely wrap the fish intestines, gallbladder, and other internal organs and rotate them out. This effectively avoids the problem of gallbladder rupture caused by interference between the rigid abdominal cleaning component and the deformed inner wall of the fish's abdomen. The removed internal organs are sent to the gallbladder detection mechanism 5 for real-time detection to identify the gallbladder rupture. This effectively solves the problem of gallbladder rupture caused by interference between the existing rigid abdominal cleaning component and the deformed inner wall of the fish's abdomen. Thus, it realizes the fully automated operation from scaling to abdominal cleaning to gallbladder detection, improving the finished product quality and yield of the automated fish-killing machine.

[0022] Furthermore, such as Figures 1-7 As shown, the primary descaling assembly 21 includes two symmetrically arranged elastic descaling components 211 at the feed end of the frame 1. One end of the elastic descaling component 211 is rotatably connected to the frame 1, and the other end is connected to the first drive motor 212 mounted on the frame 1. The primary descaling assembly 21 uses the symmetrically arranged elastic descaling components 211 to perform highly adaptive scraping of the fish's body scales, eliminating thick scales in areas such as the back and belly of the fish. Furthermore, the elastic deformation of the elastic descaling components 211 can adaptively deform according to the fish's body contour during the scraping process, conforming to the curve of the fish's surface. This ensures thorough scraping while avoiding damage to the fish skin and flesh, thus ensuring thorough descaling without harming the fish.

[0023] Furthermore, such as Figures 1-7 As shown, the guide roller assembly 22 includes two symmetrically arranged guide rollers 221. The two guide rollers 221 are rotatably mounted on the frame 1. When the fish passes by, the two guide rollers 221 apply guiding force synchronously from both sides of the fish to correct the fish whose posture has shifted after passing through the first-stage descaling assembly 21, ensuring that the fish enters the second-stage descaling assembly 23 in a centered and straight posture, and avoiding blind spots in the second-stage descaling due to the fish's tilt.

[0024] Furthermore, such as Figures 1-7As shown, the secondary descaling assembly 23 includes two sets of descaling rollers 231 arranged side by side. One set of descaling rollers 231 is connected to a second drive motor 232. The two sets of descaling rollers 231 are connected by a synchronous belt mechanism. The two sets of descaling rollers 231 arranged side by side are connected by a synchronous belt mechanism and driven to rotate synchronously by the second drive motor 232. They simultaneously roll and scrape the scales from both sides of the fish body, thoroughly removing residual fine scales that are difficult to reach in the primary descaling, such as the tail and the base of the fins, eliminating dead angles in the descaling process, and thus ensuring that the scales on the surface of the fish body are completely removed.

[0025] Furthermore, such as Figures 1-7 As shown, the frame 1 is also equipped with a screw adjustment mechanism and a slider rail structure. The screw adjustment mechanism is used to drive the two sets of descaling rollers 231 to slide along the slider rail structure to adjust the distance between the descaling rollers 231 and the guide rollers 221. The screw adjustment mechanism drives the two sets of descaling rollers 231 to slide along the slider rail structure, which can adjust the distance between the descaling rollers 231 and the guide rollers 221. This allows the descaling position of the descaling rollers 231 to be adjusted according to the fish of different lengths, ensuring that areas such as the tail and the base of the fins can be effectively covered by the descaling rollers 231, thereby improving the adaptability of the equipment to fish of different sizes.

[0026] Furthermore, such as Figures 1-7 As shown, the end of the arc-shaped swirl 422 furthest from its root is a rounded blunt head structure. When it comes into contact with the inner wall of the fish's abdomen during the evisceration process, the rounded blunt head can prevent the sharp end from piercing the fish's abdomen or internal organs, while reducing hard interference with the inner wall. This allows the evisceration piece 42 to extend into and remove the internal organs in a flexible manner, effectively protecting the integrity of the fish body and reducing the risk of gallbladder rupture.

[0027] Furthermore, such as Figures 1-7 As shown, the abdominal support block 7 is U-shaped, with its two side walls contacting the two sides of the fish abdominal incision. During the forward transport of the fish, it gradually opens the incision to both sides. The U-shaped structure makes the opening force evenly distributed on both sides of the incision, avoiding local stress concentration that could tear the fish's abdomen, thus ensuring that the abdominal dissection operation is carried out smoothly.

[0028] Furthermore, such as Figures 1-7As shown, the fish gallbladder detection mechanism 5 includes a detection box 51 located on one side of the gutting component 42. The detection box 51 contains an ultraviolet lamp and a detection camera. The ultraviolet light emitted by the ultraviolet lamp irradiates the fish viscera removed by the gutting component 42, exciting the fish bile to produce characteristic fluorescent signals. The detection camera is aimed at the area irradiated by the ultraviolet lamp to collect images of the fish viscera. The detection camera has a built-in vision module that performs real-time recognition and analysis on the images of the fish viscera collected by the detection camera. When a characteristic fluorescent signal is detected, it is determined that the fish gallbladder has ruptured. Thus, after gutting, the condition of the fish gallbladder of each fish can be detected in real time. Contaminated fish can be accurately identified without manual visual inspection, allowing for the timely removal of problematic fish and preventing bile contamination of the fish meat from entering subsequent processing steps, thereby effectively ensuring the quality of the finished product and food safety.

[0029] Furthermore, such as Figures 1-7 As shown, the detection box 51 has a feed inlet 511 on the side near the gutting component 42. A flip cover 512 is connected to the feed inlet 511 via a rotating shaft. The fish viscera removed by the gutting component 42 enter the detection box 51 through the feed inlet 511. The flip cover 512 closes automatically under the action of gravity, blocking out external light and ensuring that the ultraviolet lamp 52 irradiation and the detection camera 53 collection are carried out stably in the dark box environment, avoiding interference from ambient light on the accuracy of fluorescence recognition.

[0030] Furthermore, such as Figures 1-7 As shown, the ventriloquism mechanism 3 includes a third drive motor 31 mounted on the frame 1 and a ventriloquism blade 32 connected to the output end of the third drive motor 31. The third drive motor 31 drives the ventriloquism blade 32 to rotate, precisely cutting open the outer wall of the fish belly along the midline of the fish belly to open the abdominal cavity, providing a foundation for subsequent abdominal support and ventriloquism operations, ensuring that the incision position is consistent and the depth is uniform, avoiding the skewed or uneven incision caused by manual ventriloquism, thereby ensuring the precise connection of subsequent processing steps.

[0031] Furthermore, such as Figures 1-7 As shown, the frame 1 is also equipped with a conveying mechanism 6 and a spraying mechanism 8; The conveying mechanism 6 includes two symmetrically arranged conveyor belts 61 mounted on the frame 1, and a belly-supporting block 7 mounted on the conveyor frame of the conveyor belts 61. The two conveyor belts 61 can stably convey the fish, ensuring that the fish flows smoothly between the scaling, gutting, and evisceration stations. At the same time, the belly-supporting block 7 mounted on the conveyor frame of the conveyor belts 61 allows the abdomen of the fish to be gradually opened during the conveying process, ensuring that the abdominal cavity is in a stable open state during the evisceration operation without the need for additional stations or stops, thereby improving the processing efficiency of the fish. The spraying mechanism 8 includes multiple front spray pipes 81 positioned above the descaling drum 231 and the conveyor belt 61, and a rear spray head 82 positioned at the end of the conveyor belt 61. The front spray pipes 81 are used to spray and clean the fish body after descaling by the descaling drum 231 and / or during the descaling process. The rear spray head 82 is used to spray and clean the abdominal cavity of the fish body after it has been gutted by the gutting device 42. The multiple front spray pipes 81 and the rear spray head 82 are respectively connected to an external water source through corresponding water pumps. The multiple front spray pipes 81 can spray and clean the fish body during the descaling process. After neutralization / or descaling, the fish surface is sprayed and cleaned to promptly remove scraped scales and mucus, preventing scale residue from affecting subsequent processing. Simultaneously, after gutting, the abdominal cavity is sprayed and cleaned through the rear spray head 82 to remove residual blood and impurities, ensuring the cleanliness of the fish's interior. Furthermore, multiple front spray pipes 81 and rear spray heads 82 are connected to an external water source via water pumps, enabling independent water supply control for each workstation. This maintains the cleanliness of the fish throughout the entire process of descaling, conveying, and gutting, effectively improving the hygiene conditions of fish processing and the quality of the finished product.

[0032] Furthermore, such as Figures 1-7 As shown, a first camera 9 and a second camera 10 are respectively installed at the feeding end and the discharging end of the frame 1. The first camera 9 and the second camera 10 are electrically connected to the controller 11 installed on the frame 1. The first camera 9 captures images of fish at the feeding end, identifies the posture and size of the fish, and transmits the images to the controller 11. The controller 11 automatically adjusts parameters such as the speed of the first drive motor 212, the second drive motor 232, and the speed of the conveyor belt 61 to match each mechanism with fish of different sizes. The second camera 10 captures images of fish at the discharging end, detects whether the fish is intact, and whether there are any residual scales or internal organs. The detection results are fed back to the controller 11. The controller 11 can adjust the operating parameters of each mechanism or issue rejection signals in a timely manner based on the feedback information, thereby controlling the quality in real time during the processing and preventing unqualified fish from flowing into subsequent processes. This effectively improves the automation level and yield of the fish-killing machine.

[0033] Furthermore, such as Figures 1-7As shown, the controller 11 is also electrically connected to the first drive motor 212, the second drive motor 232, the third drive motor 31, the fourth drive motor 41, the ultraviolet lamp, the detection camera, and the water pump. The controller 11 adjusts the start-stop, speed, and timing of each actuator according to the feedback signal of the vision module. When the fish viscera are placed inside the detection box 51, the vision module collects and detects the rupture of the fish gallbladder in real time. The vision module used in this embodiment is the K230 vision module. Relying on the built-in dual-core processor and high computing power KPU edge inference unit of the K230 vision module, it utilizes the physicochemical properties of the bilirubin derivatives contained in the fish bile to excite characteristic yellow-green biological fluorescence under 365nm ultraviolet irradiation to carry out non-contact online detection of the fish after the evisceration process. The vision module has low power consumption and local offline real-time signal processing capabilities, and can quickly collect and identify fluorescence feature signals. It abandons the traditional manual contact detection method and avoids the industry problems of secondary pollution of fish meat, low efficiency of manual detection, and inconsistent judgment standards caused by the detection process from the root. Under normal processing conditions, the K230 vision module does not detect the characteristic yellow-green fluorescence signal of bile, indicating that the fish gallbladder is intact and undamaged. It then outputs a normal operation electrical signal to the controller 11, which controls all motors of the machine to maintain continuous operation and complete the fully automated processing of fish scaling, gutting, evisceration, and conveyor transport. However, when the K230 vision module detects the characteristic yellow-green fluorescence signal, it determines that the target fish's gallbladder has ruptured, causing bile leakage and contamination of the fish meat. The K230 vision module immediately issues an emergency stop command to the controller 11, which simultaneously cuts off the power supply to all connected motors, causing the entire machine to stop immediately. Workers promptly remove the abnormal fish with ruptured gallbladders, thus preventing bile contamination of the fish meat and ensuring the quality of the finished product and food safety.

[0034] like Figures 1-7 As shown in the figure, the working principle of the fish-killing machine provided in this embodiment is as follows: After the fish is fed into the equipment, the first camera 9 at the feeding end first captures an image of the fish, identifies its posture and size, and transmits the image to the controller 11. The controller 11 then automatically adjusts parameters such as the speed of each drive motor and the speed of the conveyor belt 61 to match the different sizes of fish. The fish then enters the descaling mechanism 2. First, two elastic descaling elements 211 in the primary descaling assembly 21 scrape away large areas of thick, dense scales on the back and belly of the fish. During the scraping process, the elastic descaling elements 211 adapt to the fish's contour, conforming to the surface curve of the fish, ensuring thorough scaling while avoiding damage to the skin and flesh. Next, two guide rollers 221 in the guide roller assembly 22 apply guiding force simultaneously from both sides of the fish, further enhancing the scales after the primary descaling... The fish, whose posture has shifted after scaling, undergoes posture correction and is then fed into the secondary descaling assembly 23. The descaling roller 231 in the secondary descaling assembly 23 simultaneously scrapes and removes scales from both sides of the fish, thoroughly cleaning residual fine scales in hard-to-reach areas such as the tail and fin roots. Simultaneously, the front spray pipe 81 sprays and cleans the fish surface during and / or after descaling. The descaled fish is then conveyed onto the conveyor belt 61. During this process, the fish first passes through the evisceration mechanism 3. The third drive motor 31 drives the evisceration blade 32 to rotate and cut along the midline of the fish's abdomen, opening the abdominal cavity. After the abdominal cavity is opened, the fish passes through the abdominal support block 7, which expands the abdominal incision to expose the internal space of the abdominal cavity. Subsequently, the fourth drive motor 41 drives the rotating disc of the evisceration component 42. 421 rotates and opens, causing multiple arc-shaped petals 422 to adaptively rotate and open under centrifugal force, extending into the fish's abdomen in a flexible scraping manner to remove the intestines, gallbladder, and other internal organs. The removed internal organs are fed into the detection chamber 51 through the inlet 511. The ultraviolet light emitted by the ultraviolet lamp inside the chamber irradiates the removed fish internal organs, exciting the fish bile to produce a characteristic yellow-green fluorescent signal. The detection camera is aimed at the area irradiated by the ultraviolet lamp to collect images of the fish internal organs in real time. The K230 vision module utilizes the physicochemical properties of bilirubin derivatives in fish bile to excite characteristic yellow-green fluorescence under 365nm ultraviolet irradiation to perform real-time recognition and analysis of the images. When no characteristic fluorescence signal of bile is collected, it is determined that the fish gallbladder is intact and undamaged, and an output for normal operation is sent to the controller 11. The electrical signal controller 11 controls all motors in the machine to maintain continuous operation, sequentially completing the automated processing of fish scaling, gutting, eviscerating, and conveying. Simultaneously, the rear spray head 82 sprays and cleans the abdominal cavity of the fish after evisceration, removing residual blood and impurities to ensure cleanliness. When the K230 vision module detects a characteristic fluorescence signal, it determines that the gallbladder has ruptured and immediately sends an emergency stop command to the controller 11. The controller 11 simultaneously cuts off the power to all connected motors, and the entire machine immediately stops. Workers promptly remove any abnormal fish with ruptured gallbladders to prevent bile contamination of the fish meat in subsequent processing steps. The second camera 10 at the discharge end captures images of the finished fish to check for integrity and the presence of residual scales or impurities.The test results are fed back to controller 11, which adjusts the operating parameters of each mechanism or issues rejection signals based on the feedback. This allows for real-time quality control during processing, preventing substandard fish from entering subsequent processes and achieving fully automated operation from scaling to gutting and gallbladder testing.

[0035] The above inventions are merely a few specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A fish-killing machine, characterized in that, It includes a frame and a descaling mechanism, a blotting mechanism, a gutting mechanism, and a gallbladder detection mechanism connected in sequence on the frame. A blotting block is provided between the gutting mechanism and the blotting mechanism. The width of the blotting block gradually increases along the fish transport direction. The descaling mechanism is located at the feed end of the frame and includes a number of primary descaling components, guide rollers, and secondary descaling components arranged sequentially along the fish conveying direction. The primary descaling components scrape off the thick scales on the back and belly areas of the fish that are fed into the machine. After the fish is corrected in posture by the guide rollers, it is guided into the secondary descaling components, which remove the fine scales remaining in the dead corner areas of the tail and fin roots. The evisceration mechanism includes a fourth drive motor and an evisceration component connected to the output end of the fourth drive motor. The evisceration component is a biomimetic spiral structure, which includes a spiral disc connected to the output end of the fourth drive motor and multiple arc-shaped spirals arranged circumferentially along the spiral disc. The roots of the multiple arc-shaped spirals are all hinged to the side wall of the spiral disc. When the fourth drive motor drives the spiral disc to rotate, the multiple arc-shaped spirals rotate and open by centrifugal force to remove the fish's internal organs and send them into the fish gallbladder detection mechanism for real-time detection.

2. The fish-killing machine as described in claim 1, characterized in that, The primary descaling assembly includes two elastic descaling components symmetrically arranged at the feed end of the frame. One end of each elastic descaling component is rotatably connected to the frame, and the other end is connected to a first drive motor mounted on the frame.

3. The fish-killing machine as described in claim 2, characterized in that, The guide roller assembly includes two symmetrically arranged guide rollers, which are rotatably mounted on the frame.

4. The fish-killing machine as described in claim 3, characterized in that, The secondary descaling assembly includes two sets of descaling rollers arranged side by side. One set of descaling rollers is connected to a second drive motor, and the two sets of descaling rollers are connected by a synchronous belt mechanism.

5. The fish-killing machine as described in claim 4, characterized in that, The frame is also equipped with a lead screw adjustment mechanism and a slider slide rail structure. The lead screw adjustment mechanism is used to drive the two sets of descaling rollers to slide along the slider slide rail structure to adjust the distance between the descaling rollers and the guide rollers.

6. The fish-killing machine as described in claim 1, characterized in that, The end of the arc-shaped petal furthest from its root has a blunt, rounded end.

7. The fish-killing machine as described in claim 1, characterized in that, The abdominal support block is U-shaped.

8. The fish-killing machine as described in claim 5, characterized in that, The fish gallbladder detection mechanism includes a detection box located on one side of the evisceration device. The detection box contains an ultraviolet lamp and a detection camera. The ultraviolet light emitted by the ultraviolet lamp irradiates the fish viscera removed by the evisceration device, exciting the fish bile to produce characteristic fluorescent signals. The detection camera is aimed at the area irradiated by the ultraviolet lamp to collect images of the fish viscera. The detection camera has a built-in vision module, which performs real-time recognition and analysis on the images of the fish viscera collected by the detection camera. When the characteristic fluorescent signal is recognized, it is determined that the fish gallbladder has ruptured.

9. The fish-killing machine as described in claim 8, characterized in that, The frame is also equipped with a conveying mechanism and a spraying mechanism; The conveying mechanism includes two conveyor belts mounted on the frame and arranged symmetrically, and the support block is mounted on the conveyor frame of the conveyor belts; The spraying mechanism includes multiple front spray pipes located above the descaling roller and the conveyor belt, and a rear spray head located at the end of the conveyor belt. The front spray pipes are used to spray and clean the fish body after descaling by the descaling roller and / or during the descaling process. The rear spray head is used to spray and clean the abdominal cavity of the fish body after it has been gutted by the gutting device. The multiple front spray pipes and the rear spray head are respectively connected to an external water source through corresponding water pumps.

10. The fish-killing machine as described in claim 9, characterized in that, The feed end and discharge end of the frame are respectively equipped with a first camera and a second camera. The first camera and the second camera are electrically connected to a controller installed on the frame. The controller is also electrically connected to the first drive motor, the second drive motor, the fourth drive motor, the ultraviolet lamp, the detection camera, the vision module and the water pump.

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