Automatic hibernation sequencing and feeding pipeline for crabs

Abstract

The utility model discloses a kind of crab automatic dormancy sequencing feeding assembly line, belong to crab sorting technical field, in turn including automatic dormancy device, sequencing feeding device and grading sorting device. Crab is carried out low-temperature treatment by low-temperature dormancy cavity and dormancy conveyor belt to automatic dormancy device, so that it enters quiet state, reduces stress reaction. Sequencing feeding device includes the feeding conveyor belt of the link of dormancy conveyor belt and is equipped with the guide structure of inclined guide surface, and single-column sequencing passage is formed between guide structure and feeding conveyor belt, realizes the ordered output of crab. Grading sorting device is equipped with image acquisition module, control system and actuating mechanism, generates sorting instruction according to shape feature data automatically, accurately push crab to corresponding sorting passage. The assembly line realizes the automation of live crab sorting whole process, improves processing efficiency and classification accuracy, solves the problem of low efficiency and poor precision of traditional manual sorting.

Description

Technical Field

[0001] This utility model belongs to the field of crab sorting technology, specifically relating to an automatic hibernation sorting and feeding production line for crabs. Background Technology

[0002] Currently, the sorting and processing of swimming crabs still heavily relies on manual labor, especially in the live crab sorting stage, which suffers from high labor intensity, low efficiency, and easy damage to the crabs. Although fishery automation technology has developed in recent years, automated sorting equipment for swimming crabs still faces the following technical bottlenecks:

[0003] 1. Problem of dynamic interference from live crabs:

[0004] Existing sorting devices are mainly designed for frozen crabs. For live crabs, it is difficult to capture clear images stably due to their dynamic behavior, which makes real-time target detection difficult and makes it difficult to sort live crabs.

[0005] 2. Mechanical structure and adaptability defects:

[0006] Complex mechanical structures: For example, using robotic arms to sort crabs. Such structures have high maintenance costs and a failure rate that may affect sorting efficiency.

[0007] Hardware performance bottleneck: Existing systems rely on high-performance processors for real-time image processing, but insufficient hardware configuration can lead to increased data response latency, which seriously affects sorting efficiency.

[0008] 3. Lack of flexibility and scalability:

[0009] Existing sorting equipment is often designed for specific types or grades of crabs, and is not very adaptable to other varieties or new classification needs. In addition, when the market adjusts the sorting standards or grading, the equipment may need to undergo major hardware or software modifications, lacking the ability to flexibly respond to changes. Summary of the Invention

[0010] This invention addresses the aforementioned problems in the existing technology by proposing an automated hibernation sorting and feeding production line for crabs that integrates low-temperature hibernation control, dynamic sorting and feeding, and adaptive sorting.

[0011] This utility model can be achieved through the following technical solutions:

[0012] An automated crab dormancy sorting and feeding production line includes an automated dormancy device, a sorting and feeding device, and a grading and sorting device connected in sequence.

[0013] The automatic sleep device includes:

[0014] Low-temperature hibernation chamber, used for low-temperature hibernation treatment of crabs;

[0015] A hibernation conveyor belt is installed in the low-temperature hibernation chamber and used to transport crabs;

[0016] The sorting and feeding device includes:

[0017] A feeding conveyor belt, which is connected to the dormant conveyor belt;

[0018] A guiding structure is provided on the feeding conveyor belt. The guiding structure has an inclined guiding surface, which forms an acute angle with the conveying direction of the conveyor belt. The side of the feeding conveyor belt away from the dormant conveyor belt forms a sorting channel with the guiding structure for single-row sorting and output of crabs.

[0019] The grading and sorting device includes:

[0020] Image acquisition module, which is used to acquire the external features data of crabs;

[0021] The control system is communicatively connected to the image acquisition module, and generates sorting instructions based on the shape feature data output by the image acquisition module.

[0022] The actuator, based on instructions from the control system, pushes crabs of different sizes to their corresponding sorting channels.

[0023] As a further improvement of this utility model, the low-temperature hibernation chamber is configured as an ice-water pool, the middle part of the ice-water pool is recessed to form a sinking trough for containing the ice-water mixture, and the inlet end and outlet end of the sinking trough are respectively provided with inclined guide plates.

[0024] As a further improvement of this utility model, the dormant conveyor belt includes a horizontal conveying section and an inclined conveying section. The horizontal conveying section is located in the sinking trough, and the inclined conveying section is located on top of the inclined guide plate at the outlet end of the ice water pool.

[0025] As a further improvement of this utility model, a protective net is provided inside the ice water pool, and the protective net is located on top of the dormant conveyor belt.

[0026] As a further improvement of this utility model, ice-returning grooves are provided on both sides of the ice water pool, the ice-returning grooves are connected to the low-temperature hibernation chamber, and ice-proof nets are provided on the connecting surfaces of the two.

[0027] As a further improvement of this utility model, the dormancy conveyor belt is connected to a geared motor, and the conveying speed of the dormancy conveyor belt is adjusted by the geared motor so that the soaking time of each crab reaches the preset dormancy time threshold.

[0028] As a further improvement of this utility model, the feeding conveyor belt includes at least two conveyor belt groups arranged side by side along its width direction, and the inclined guide surface of the guide structure extends to the last conveyor belt of the conveyor belt group.

[0029] As a further improvement of this utility model, the guide structure is configured as an inclined guard plate, and the inclination angle of the inclined guide surface is set between 60° and 68°.

[0030] As a further improvement of this utility model, the image acquisition module adopts an industrial camera, which is installed on the truss on the exit side of the sorting channel, and the lens of the industrial camera is facing the feeding conveyor belt.

[0031] As a further improvement of this utility model, the actuator is configured as a pusher cylinder, which is arranged at intervals along the side of the feeding conveyor belt on the outlet side of the sorting channel, and the push rod stroke of the pusher cylinder covers the width direction of the feeding conveyor belt.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. Applicable to live crab sorting: Utilizing low-temperature dormancy treatment technology, the quality of crabs is effectively reduced due to excessive stress or physical damage during the sorting process. This method ensures that the crabs remain calm during the sorting process, thereby improving the accuracy and reliability of sorting.

[0034] 2. Improve sorting efficiency: The entire process is highly automated, which greatly speeds up the overall processing speed from fishing to sorting. Compared with the traditional manual sorting method, not only is the efficiency greatly improved, but the accuracy is also significantly enhanced, solving the problems of low efficiency and inaccurate classification in the past.

[0035] 3. Sorting and output one by one: Based on the biological characteristics of crabs, the running speed of the feeding conveyor belt is reasonably set. Combined with the tilt angle of the inclined guide surface of the guide structure (slanted baffle), the congestion, accumulation and jamming problems that may occur during the sorting process of crabs are effectively solved. It can not only meet the sorting efficiency requirement of at least 20 swimming crabs per minute, but also maintain a smooth transition when swimming crabs slide into the conveyor belt, preventing material stagnation or jumping caused by too slow or too fast speed, and also avoiding damage caused by crabs squeezing each other.

[0036] 4. Enhanced flexibility and scalability: The design fully considers the changing needs of different varieties and classifications. By simply adjusting the low-temperature treatment time and the size of the sorting channel, it can adapt to different crab species. This design concept not only improves the system's flexibility but also ensures its long-term sustainability and market competitiveness, providing convenience for future upgrades and expansion.

[0037] 5. High system stability: The system integrates mechanical structure and control system to ensure collaborative work between modules, reduce failure rate, improve overall system stability, optimize the design of key components, and ensure structural strength and durability. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the structure of the automatic hibernation sorting and feeding production line for crabs according to this utility model;

[0039] Figure 2 This is a schematic diagram of the automatic sleep device of this utility model;

[0040] Figure 3 This is a force analysis diagram of the guide structure of this utility model.

[0041] In the diagram, 100 is the automatic sleep device; 110 is the ice water pool; 120 is the sleep conveyor belt; 121 is the geared motor; 130 is the protective net; 140 is the ice trough; 150 is the ice-blocking net; and 160 is the hopper.

[0042] 200. Sorting and feeding device; 210. Feeding conveyor belt; 211. Primary conveyor belt; 212. Secondary conveyor belt; 213. Tertiary conveyor belt; 220. Guiding structure; 221. Inclined guide surface; 230. Sorting channel;

[0043] 300. Grading and sorting device; 310. Image acquisition module; 320. Pushing cylinder. Detailed Implementation

[0044] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. The technical methods of the present invention will be further described, but the present invention is not limited to these embodiments.

[0045] like Figures 1-3 As shown, this utility model provides an automatic hibernation and sorting feeding production line for crabs, including an automatic hibernation device 100, a sorting and feeding device 200, and a grading and sorting device 300 connected in sequence.

[0046] Automatic sleep device 100 includes:

[0047] The low-temperature hibernation chamber is used to put crabs into a low-temperature hibernation state. The chamber is filled with an ice-water mixture, and the temperature and soaking time are precisely controlled to ensure that the crabs enter a state of cold anesthesia.

[0048] The hibernation conveyor belt 120 is installed in the low-temperature hibernation chamber and is used to transport crabs.

[0049] The sorting and feeding device 200 includes:

[0050] The feeding conveyor belt 210 is connected to the dormant conveyor belt 120;

[0051] The guide structure 220 is installed on the feeding conveyor belt 210. The guide structure 220 has an inclined guide surface 221, which forms an acute angle with the conveying direction of the conveyor belt. The side of the feeding conveyor belt 210 away from the dormant conveyor belt 120 forms a sorting channel 230 between the guide structure 220 and the guide structure 220 for single-row sorting of crabs. This single-row output method can reduce the damage to crabs caused by mutual squeezing and facilitate subsequent sorting.

[0052] The grading and sorting device 300 includes:

[0053] Image acquisition module 310, which is used to acquire the external features data of crab;

[0054] The control system is communicatively connected to the image acquisition module 310. The control system generates sorting instructions based on the shape feature data output by the image acquisition module 310.

[0055] The actuator, based on instructions from the control system, pushes crabs of different sizes to the corresponding sorting channels, ensuring that each crab is correctly classified according to its size.

[0056] The overall process can be summarized as follows:

[0057] 1. Low-temperature hibernation: Pour the crabs into the low-temperature hibernation chamber of the automatic hibernation device 100. The device forms an ice-water mixture by adding ice cubes and an appropriate amount of water in advance, so that the swimming crabs are immersed in the 0℃ environment for about 35 seconds to achieve a cold anesthesia state.

[0058] 2. Single-column sorting output: After being anesthetized, the crabs are transported by the feeding conveyor belt. After being blocked by the guide structure 220, the crabs can finally be sorted and output in a single column from the sorting channel 230.

[0059] 3. Image acquisition and analysis: The image acquisition module 310 scans the crabs output from the sorting channel 230 one by one, captures their high-definition images and transmits them to the central processing unit to determine the size grade of the crabs.

[0060] 4. Intelligent classification: Once the size grade of the crabs is determined, the control system immediately activates the corresponding cylinder action to push the swimming crabs to the corresponding production line according to their grade. There are three production lines that receive swimming crabs of different size grades to ensure accurate classification.

[0061] Compared to existing sorting methods, this assembly line design offers at least the following advantages:

[0062] 1. Applicable to live crab sorting: Utilizing low-temperature dormancy treatment technology, this method effectively reduces the quality decline of crabs caused by excessive stress or physical damage during sorting. This method ensures the crabs remain calm during the sorting process, thereby improving the accuracy and reliability of sorting.

[0063] 2. Improve sorting efficiency: The entire process is highly automated, which greatly speeds up the overall processing speed from fishing to sorting. Compared with the traditional manual sorting method, not only is the efficiency greatly improved, but the accuracy is also significantly enhanced, solving the problems of low efficiency and inaccurate classification in the past.

[0064] 3. Reduce operating costs: With the improvement of automation level, the demand for manpower is significantly reduced, which directly reduces labor costs. In addition, through the optimization of hardware configuration and simplification of mechanical structure, maintenance costs are also effectively controlled, further enhancing economic benefits.

[0065] 4. Enhanced flexibility and scalability: The design fully considers the changing needs of different varieties and classifications. By simply adjusting the low-temperature treatment time and the size of the sorting channel 230, it can adapt to different crab species. This design concept not only improves the flexibility of the system, but also ensures its long-term sustainability and market competitiveness, and provides convenience for future upgrades and expansion.

[0066] 5. High system stability: The system integrates mechanical structure and control system to ensure collaborative work between modules, reduce failure rate, improve overall system stability, optimize the design of key components, and ensure structural strength and durability.

[0067] It should also be noted that there are currently no devices on the market for anesthetizing and putting swimming crabs to hibernation. For reference, fish are generally anesthetized using two methods: hypothermia and electroanesthesia.

[0068] For hypothermic anesthesia, fish are placed in cold water, and as their body temperature gradually decreases, they reach a state of anesthesia. This process avoids the direct use of chemical anesthetics and instead uses low temperature to safely and harmlessly render the fish unconscious.

[0069] For electroanesthesia, the nervous system of fish, including neurons in the brain and spinal cord, is highly sensitive to external electrical stimulation. When a pre-set current passes through the water, it penetrates the fish's body and interferes with the transmission of nerve signals. Specifically, a current of appropriate intensity can temporarily block or reduce the excitability of sensory and motor nerves, thereby inhibiting the fish's sensory abilities and muscle coordination, allowing it to quickly enter a state of anesthesia. This process is significantly faster than traditional chemical anesthesia methods, typically requiring only a few seconds to a dozen seconds for the fish to exhibit signs of partial or complete loss of balance, such as ceasing to swim actively and becoming lethargic, without undergoing a lengthy drug absorption process.

[0070] A significant advantage of electroanesthesia is its rapid recovery. Once the power is turned off and the electric field disappears, the fish's nervous system function will recover naturally within a short time. Generally, within one minute, the fish can resume normal swimming and other physiological activities.

[0071] However, considering that swimming crabs generally live at depths of about 50-100m below sea level, their daily living temperature is between 10 and 20 degrees Celsius, and their survival off the shore requires constant oxygenation and has relatively strict requirements for water temperature, they can usually only survive for less than 48 hours without continuous oxygen supply, which shows how vulnerable they are compared to fish.

[0072] Studies on the low-temperature adaptability of swimming crabs have shown that they can only move when disturbed at 10 degrees Celsius. At 5 degrees Celsius, they are already in a state of cold anesthesia, becoming immobile and dying after 12 hours of cold stress. This demonstrates that the low-temperature anesthesia using an ice-water mixture fully meets the index parameters, and is safe and pollution-free, avoiding physical damage caused by direct contact between the experimental subjects and ice, and protecting the integrity of the experimental subjects.

[0073] While electro-anesthesia for hibernation is fast and efficient, it is also expensive. The key concern is that swimming crabs are quite fragile, and electro-anesthesia may cause metabolic disorders that could lead to their death. Ultimately, after experimental verification, and considering that the device is compatible with fishing boats, which have their own ice makers, no additional power supply is needed. Simply add ice to the ice water tank, which is convenient and quick.

[0074] Therefore, the automatic hibernation device in this embodiment adopts an ice water anesthesia hibernation scheme.

[0075] To support the above argument, experimental data on hypothermic quiescence of swimming crabs are attached:

[0076]

[0077] The test results show that:

[0078] 1. The time it takes for a swimming crab to enter a dormant state is not directly related to its size;

[0079] 2. Swimming crabs can enter a dormant state when soaked in ice water. They can fully enter dormancy after soaking for 35 seconds, and the recovery time is 2 minutes, which meets the processing needs of large-scale market supply of swimming crabs.

[0080] Furthermore, the following is a detailed description of the automatic sleep device 100:

[0081] Preferably, the low-temperature hibernation chamber is configured as an ice-water pool 110. The middle part of the ice-water pool 110 is recessed to form a sinking trough for containing the ice-water mixture. The inlet and outlet ends of the sinking trough are respectively provided with inclined guide plates. By simply pouring a batch of crabs into the ice-water pool 110 along the inlet end, the crabs can be subjected to low-temperature anesthesia in the ice-water pool 110.

[0082] Preferably, the dormant conveyor belt 120 includes a horizontal conveying section and an inclined conveying section. The horizontal conveying section is located in the sinking tank, and the inclined conveying section is located on top of the inclined guide plate at the outlet end of the ice water pool 110. The dormant conveyor belt 120 gradually outputs the crabs in the sinking tank to the outside.

[0083] Preferably, a protective net 130 is provided inside the ice water pool 110, and the protective net 130 is located on top of the dormant conveyor belt 120.

[0084] Preferably, ice-falling troughs 140 are provided on both sides of the ice water pool 110, the ice-falling troughs 140 are connected to the low-temperature hibernation chamber, and ice-proof nets 150 are provided on the connecting surfaces of the two.

[0085] Before use, pour ice water into the ice water pool 110 to reach the designated water level. Pour ice blocks into the ice pouring troughs 140 on both sides, and then pour the swimming crabs into the ice water pool 110. The device starts operating, the conveyor belt runs, and the live crabs begin to soak in the ice water. At this time, the total water level in the ice water pool 110 is about 30cm, and the swimming crabs are submerged to a depth of 15cm. The conveyor belt moves at a speed of 1.4 meters per minute. As the dormant conveyor belt 120 continues to operate, the swimming crabs gradually emerge from the ice water pool 110 and enter the slide 160. Guided by the slide 160, the swimming crabs are smoothly transported to the next processing stage.

[0086] Another noteworthy feature is that the dormancy conveyor belt 120 is connected to a geared motor 121. The conveying speed of the dormancy conveyor belt 120 can be adjusted by the geared motor 121, achieving stepped speed regulation from 0.3m to 3m / min, so that the soaking time of each crab reaches the preset dormancy time threshold.

[0087] As an example, after the ice water mixture is poured into the ice water pool 110, the total water level is about 30cm, and the swimming crabs are submerged to a depth of 15cm. According to the experimental data of freezing anesthesia and hibernation, the swimming crabs need to be immersed in ice water for about 35 seconds. Therefore, taking the design transmission speed as the median value of 1.4m / min, we can obtain the transmission distance of the swimming crabs in the ice water by substituting it into formula 1-1.

[0088] (1-1)

[0089] To prevent leakage caused by the spindle contacting the liquid surface, the spindle is raised to more than 10cm above the liquid surface. At the same time, a 30-degree upward inclined surface is designed to facilitate the feeding of swimming crabs. The length ratio of the inclined surface to the flat surface is 5:5, that is, the length of the upward inclined conveyor belt is 50cm, the length of the flat conveyor belt is 50cm, and the length of the inclined conveyor belt inside the liquid surface is 30cm.

[0090] The automatic sleep production line has a frame length of 130cm, a width of 75cm, and a height of 45cm. The belt width is 70cm, and the height from the belt to the 130cm safety net is 15cm. The total volume of the device, substituted into formula 3-2, is:

[0091] (3-2)

[0092] Taking a standard 300g swimming crab as an example, substituting into volume formula 3-3, we get:

[0093] (3-3)

[0094] Calculations show that the device can hold a maximum of about 160 swimming crabs, with a total weight of 48kg. This meets the design standard that at least 20 swimming crabs can be sorted per minute. At the same time, it is much smaller than the deck size of the crab cage boat (15m*4m), which meets the actual design requirements.

[0095] Furthermore, the following is a detailed description of the sorting and feeding device 200:

[0096] Preferably, the feeding conveyor belt 210 includes at least two conveyor belt groups arranged side by side along its width direction, and the inclined guide surface 221 of the guide structure 220 extends to the last conveyor belt of the conveyor belt group.

[0097] For example, in this embodiment, a three-stage conveyor belt 213 structure is adopted. After the swimming crabs have been put into hibernation, they slide one by one from the hopper 160 onto the first-stage conveyor belt 211. The first-stage conveyor belt 211 has a relatively fast belt speed, which allows for the rapid processing of a batch of swimming crabs. When the swimming crabs encounter the guide structure 220 (such as the inclined baffle), they will slide quickly into the second-stage conveyor belt 212 along the inclined guide surface 221. The swimming crabs pass through the inclined guard plate again and smoothly enter the third-stage conveyor belt 213. Finally, they are discharged from the sorting channel 230. At this time, the swimming crabs have been sorted neatly one by one and discharged one by one, and are about to enter the next process.

[0098] It should be noted that, in order to ensure that the swimming crabs on the feeding conveyor belt 210 do not become congested and can be smoothly output one by one along the sorting channel 230, the running speed of the feeding conveyor belt 210 and the inclination angle of the inclined guide surface 221 of the guide structure 220 need to be reasonably designed, as detailed below:

[0099] For example, the primary conveyor belt 211 is 1m long and 60cm wide. Due to the presence of the inclined baffle, its actual effective length is around 60cm. It can accommodate 5 swimming crabs at a time. In order to meet the overall design requirements, it can sort at least 20 swimming crabs per minute.

[0100] Therefore, the running length of the conveyor belt within one minute shall not be less than 4m. Considering that the swimming crabs slide from the hopper 160 into the primary conveyor belt 211, and the primary conveyor belt 211 is relatively narrow, in order to prevent the swimming crabs from congesting, a running speed of 6m / min is selected. Therefore, the speed of all feeding conveyor belts 210 is designed to be 6m / min.

[0101] based on Figure 3 As shown, the angle of the inclined baffle is determined by force analysis. The conveyor belt feeding speed is 6m / min. Substitute the values ​​into formulas 1-4 and 1-5 to calculate the impact force F and the friction force f, respectively.

[0102] (1-4)

[0103] In the formula:

[0104] M — Mass of the swimming crab, kg;

[0105] ∆V — Change in velocity, m / s;

[0106] ∆T — Collision time, s;

[0107] (1-5)

[0108] In the formula:

[0109] FN — Normal force, N;

[0110] μ — friction factor, 0.2 for smooth belts;

[0111] (3-6)

[0112] (3-7)

[0113] F2 and FC are opposing forces and cancel each other out. For the crab to move downwards, F1b must be greater than f, and by calculating α, we get:

[0114] (1-8)

[0115] Therefore, the angle of the inclined guide surface 221 of the inclined baffle is set to 65 degrees.

[0116] Based on the design speed of the feeding conveyor belt 210 being 6 m / min, and the angle of the inclined guide surface 221 of the inclined baffle being set to 65 degrees, in the actual experiment, because the swimming crab's body has a certain curvature at both the front and back, the swimming crab will generate a certain relative sliding and rolling motion to reach the next level conveyor belt 211, and finally output a single crab, which meets the design requirements.

[0117] By rationally setting the operating speed of the feeding conveyor belt 211 to 6m / min, and combining it with the design scheme of the inclined baffle at an angle of 65°, the problems of congestion, accumulation and jamming that may occur during the sorting process of swimming crabs are effectively solved. This speed can not only meet the sorting efficiency requirement of at least 20 swimming crabs per minute, but also maintain a smooth transition when the swimming crabs slide into the conveyor belt, preventing material stagnation or jumping caused by too slow or too fast speed.

[0118] Additionally, it should be noted that the design of the operating speed of the feeding conveyor belt 210 and the angle design of the inclined guide surface 221 of the inclined baffle are essential for achieving the single output of crabs, as explained below:

[0119] First, a reasonable conveyor belt speed can ensure that the swimming crabs transition smoothly between each processing stage, avoiding collisions caused by excessive speed or blockages caused by excessively slow speed. The appropriate speed also helps to reduce physical damage to the crabs during the transmission process.

[0120] Secondly, the design of the guide angle takes into account the curvature characteristics of the swimming crab's body. When designing the guide angle, it is necessary to take into account the rolling and sliding phenomena that the crab may produce during movement. A reasonable angle design helps the crab to slide smoothly along the guide surface according to its own shape characteristics, further ensuring the crab's safety and integrity.

[0121] Overall, the design of conveyor belt speed and guide angle is crucial for achieving efficient, safe, and precise automated processing of swimming crabs. The selection of these parameters requires comprehensive consideration of the biological characteristics of the crabs, the actual needs of mechanical operation, and the overall coordination of the system to achieve optimal working results.

[0122] Conversely, if the speed of the feeding conveyor belt 210 and the guiding angle of the inclined baffle are not specifically designed, when feeding and sorting specific species such as crabs, it is very easy to cause conveying congestion and crab damage due to the biological characteristics of the crabs themselves.

[0123] Furthermore, the following is a detailed description of the grading and sorting device 300:

[0124] Preferably, the image acquisition module 310 uses an industrial camera, which is installed on the truss on the exit side of the sorting channel 230, and the lens of the industrial camera is facing the feeding conveyor belt 210. Based on image recognition, the male and female are determined and the size is determined, laying the foundation for subsequent sorting.

[0125] Preferably, the actuator is a pusher cylinder 320, which is arranged at intervals along the side of the feeding conveyor belt 210 on the exit side of the sorting channel 230. The push rod stroke of the pusher cylinder 320 covers the width direction of the feeding conveyor belt 210, ensuring that the pusher cylinder 320 can smoothly push the crab into the next production line or container.

[0126] The specific sorting process is explained below:

[0127] 1. The arranged swimming crabs are transported by a conveyor belt, and industrial cameras mounted on the truss scan each crab one by one, accurately capturing high-definition images. These images are then transmitted to the central processing unit for rapid calculation and analysis. The size and grade of each crab can be determined in just a few milliseconds, with high accuracy and an extremely low error rate.

[0128] 2. Once the grade is determined, the system immediately activates and responds. Through intelligent control logic, the pusher cylinders 320 operate, and these pusher cylinders 320 push the swimming crabs precisely to the corresponding grade's production line according to the grade's pushing force. There are three production lines in total, and each production line represents a grade, ensuring that each swimming crab is correctly classified.

[0129] 3. At the end of each production line, there is a dedicated conveyor belt that receives swimming crabs of the corresponding grade. The conveyor belt of the first-level production line receives the largest swimming crabs, the second level receives slightly smaller ones, the third level receives medium-sized ones, and the smallest swimming crabs are on the third-level line.

[0130] This layout ensures high efficiency throughout the entire production line, allowing each swimming crab to be sorted and classified quickly and accurately.

[0131] By introducing industrial camera image recognition technology and pneumatic actuators, a highly efficient, accurate, and stable automated sorting system has been built, which fully meets the needs of modern fisheries for high-quality and high-efficiency processing.

[0132] In summary, this embodiment presents a novel automated dormancy sorting and feeding production line for swimming crabs. By integrating an advanced sorting and feeding system with low-temperature dormancy automated mechanical operation, this production line can achieve automatic freezing and anesthesia, orderly arrangement, and precise feeding of swimming crabs, thereby improving sorting and picking efficiency, reducing manual labor intensity, and lowering production costs. At the same time, by precisely controlling freezing conditions, it ensures the quality of swimming crabs, enhances the economic benefits of the overall processing chain, and greatly improves the automation level of the production process and product quality.

[0133] This intelligent sorting production line features efficient sorting capabilities, precise feeding and classification, high flexibility and scalability, and high stability and reliability. Through automated assembly line operations, it achieves efficient and precise sorting of swimming crabs, which not only significantly improves the processing efficiency of swimming crabs, but also effectively reduces labor costs, improves production safety, and lowers production costs.

[0134] Furthermore, a unique dormancy mechanism was designed to address the biological characteristics of swimming crabs, ensuring they remain quiet during sorting and facilitating accurate machine identification and handling. Simultaneously, machine vision technology was incorporated to achieve automatic identification, location, and classification of swimming crabs, ensuring sorting accuracy and efficiency. The system's intelligence level is continuously being improved.

[0135] The entire system emphasizes precise design and dimensional parameter calculation to ensure efficient and accurate processing of swimming crabs, improving processing efficiency, reducing the difficulty of manual operation, and bringing significant improvements and convenience to the swimming crab processing industry.

[0136] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of any combination of the above technical features. The above are specific embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

[0137] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0138] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0139] The technical solutions of the various embodiments of this utility model can be combined with each other, but only if they can be implemented by those skilled in the art. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

[0140] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An automatic hibernation sorting and feeding production line for crabs, characterized in that, It includes an automatic sleep device, a sorting and feeding device, and a grading and sorting device connected in sequence, among which, The automatic sleep device includes: Low-temperature hibernation chamber, used for low-temperature hibernation treatment of crabs; A hibernation conveyor belt is installed in the low-temperature hibernation chamber and used to transport crabs; The sorting and feeding device includes: A feeding conveyor belt, which is connected to the dormant conveyor belt; A guiding structure is provided on the feeding conveyor belt. The guiding structure has an inclined guiding surface, which forms an acute angle with the conveying direction of the conveyor belt. The side of the feeding conveyor belt away from the dormant conveyor belt forms a sorting channel with the guiding structure for single-row sorting and output of crabs. The grading and sorting device includes: Image acquisition module, which is used to acquire the external features data of crabs; The control system is communicatively connected to the image acquisition module, and generates sorting instructions based on the shape feature data output by the image acquisition module. The actuator, based on instructions from the control system, pushes crabs of different sizes to their corresponding sorting channels.

2. The automatic hibernation sorting and feeding production line for crabs according to claim 1, characterized in that, The low-temperature hibernation chamber is configured as an ice-water pool, with a recessed middle section forming a sinkhole for containing the ice-water mixture. The inlet and outlet ends of the sinkhole are respectively provided with inclined guide plates.

3. The automatic hibernation sorting and feeding production line for crabs according to claim 2, characterized in that, The dormant conveyor belt includes a horizontal conveying section and an inclined conveying section. The horizontal conveying section is located in the sinking trough, and the inclined conveying section is located on top of the inclined guide plate at the outlet end of the ice water pool.

4. The automatic hibernation sorting and feeding production line for crabs according to claim 2, characterized in that, The ice water pool is equipped with a protective net, which is located on top of the dormant conveyor belt.

5. The automatic hibernation sorting and feeding production line for crabs according to claim 2, characterized in that, Ice-returning troughs are provided on both sides of the ice water pool. The ice-returning troughs are connected to the low-temperature hibernation chamber, and ice-proof nets are provided on the connecting surfaces of the two.

6. The automatic hibernation sorting and feeding production line for crabs according to claim 1, characterized in that, The hibernation conveyor belt is connected to a geared motor, which adjusts the conveying speed of the hibernation conveyor belt so that the soaking time of each crab reaches the preset hibernation time threshold.

7. The automatic hibernation sorting and feeding production line for crabs according to claim 1, characterized in that, The feeding conveyor belt includes at least two conveyor belt groups arranged side by side along its width direction, and the inclined guide surface of the guide structure extends to the last conveyor belt of the conveyor belt group.

8. The automatic hibernation sorting and feeding production line for crabs according to claim 1, characterized in that, The guide structure is configured as an inclined guard plate, and the inclination angle of the inclined guide surface is set between 60° and 68°.

9. The automatic hibernation sorting and feeding production line for crabs according to claim 1, characterized in that, The image acquisition module uses an industrial camera, which is installed on the truss on the exit side of the sorting channel, and the lens of the industrial camera is facing the feeding conveyor belt.

10. The automatic hibernation sorting and feeding production line for crabs according to claim 1, characterized in that, The actuator is configured as a pusher cylinder, which is arranged at intervals along the side of the feeding conveyor belt on the exit side of the sorting channel, and the push rod stroke of the pusher cylinder covers the width direction of the feeding conveyor belt.

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