A device for removing meat from a shellfish shell

Abstract

This invention relates to the field of aquatic product processing machinery and equipment, and particularly to a shellfish meat extraction device. The device includes a frame, on which a feeding and shaping unit, a swing-opening shell unit, a shell-meat separation unit, a skirt-meat separation unit, and a control system are sequentially arranged vertically. The discharge end of the feeding and shaping unit is located above the feed end of the swing-opening shell unit. The swing-opening shell unit includes a counter-rotating cylindrical turntable with multiple circumferentially spaced positioning grooves on the turntable, forming protrusions between adjacent positioning grooves. The bottom surface of the positioning grooves extends downwards at an angle from the center of the turntable to the edge. The shell-meat separation unit is located below the discharge end of the swing-opening shell unit; the skirt-meat separation unit is located below the discharge end of the shell-meat separation unit; and the control system is electrically connected to each unit. This invention achieves automated shellfish meat extraction through a swing-opening, gentle shell opening and multi-stage separation, offering advantages such as low breakage rate, high efficiency, and low cost.

Description

Technical Field

[0001] This invention relates to the field of aquatic product processing machinery and equipment, and in particular to a shellfish meat extraction device. Background Technology

[0002] Shellfish (such as scallops, clams, and mussels) are an important aquaculture crop in coastal areas of my country. In particular, the adductor muscle (scallop adductor muscle) of scallops has high nutritional value and commands a good market price after drying. Currently, most shellfish meat processing relies on manual labor, including manually opening the shells, manually removing the meat, and separating the skirt from the viscera. However, manual meat extraction suffers from high labor intensity, low production efficiency, and continuously rising labor costs. More importantly, manual operation is significantly affected by individual skill and fatigue levels; during shell opening, impact or compression easily causes tearing and damage to the shellfish meat, severely reducing raw material utilization and finished product quality.

[0003] The existing scallop meat extraction equipment is mostly large-scale industrial production lines that use violent shell-opening methods such as steaming and softening, high-pressure spraying, and vibration to remove the shells. The equipment is bulky, expensive (hundreds of thousands of yuan per set), and occupies a large area. It is only suitable for large-scale processing enterprises and cannot be adapted to small and micro-scale scenarios such as coastal aquaculture farmers, small processing plants, and family workshops, which constitute the majority of the industry.

[0004] In addition, such equipment has drawbacks such as strong impact force when opening the shell, high rate of shell meat breakage, and high energy consumption. There is a lack of small automated shellfish meat extraction devices on the market that are compact, inexpensive, gentle in opening, and can extract meat completely. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention provides a shellfish meat extraction device, comprising a frame, and further comprising a feeding and shaping unit, a shell-opening unit, a shell-meat separation unit, a skirt-meat separation unit, and a control system, which are sequentially arranged on the frame in a vertical direction. The feeding and shaping unit is used for automatic feeding and posture correction of shellfish, and its discharge end is located above the feeding end of the opening shell unit. The shell-opening unit is used to open shells of mollusks by a screw-opening method. It includes a cylindrical turntable that rotates in opposite directions. Multiple positioning grooves are arranged circumferentially on the cylindrical turntable, and a protrusion is formed between adjacent positioning grooves. The bottom surface of the positioning groove extends downward at an incline from the center of the turntable to the edge. The shell-meat separation unit is used to separate the shell from the meat after the shell has been opened, and it is located below the discharge end of the rotating shell-opening unit. The skirt meat separation unit is used to separate the adductor muscle from the skirt viscera, and it is located below the discharge end of the shell meat separation unit; The control system is electrically connected to the feeding and shaping unit, the shell-opening unit, the shell-meat separation unit, and the skirt-meat separation unit, respectively, and is used to control the coordinated operation of each unit.

[0006] Furthermore, the feeding and shaping unit also includes an inclined vibrating hopper, a moisture-proof vibrating motor electrically connected to the vibrating hopper, a guide plate connected to the discharge port of the vibrating hopper, and a guide limiting groove disposed at the outlet end of the guide plate; the moisture-proof vibrating motor drives the vibrating hopper to vibrate, so that the shellfish automatically completes posture correction under the action of vibration by relying on their own geometric asymmetry, and is discharged in a single row and uniform posture along the guide limiting groove, and enters the opening shell unit through the guide plate.

[0007] Preferably, this device is used for scallops with asymmetrical shells.

[0008] Furthermore, the inclination angle of the vibrating hopper is 10°-20°, and its vibration frequency is 30-50Hz; the inner wall of the vibrating hopper is polished, and the surface material in contact with the shellfish is made of stainless steel or wear-resistant engineering plastic.

[0009] Furthermore, in the shell-opening unit, the positioning grooves on the pair of cylindrical turntables are arranged opposite each other at the feeding end and together form a feeding port for receiving shellfish. The rotary shell-opening unit also includes a geared drive motor and a synchronous transmission mechanism. The geared drive motor drives the cylindrical turntable to rotate in opposite directions through the synchronous transmission mechanism. During rotation, the protrusion abuts against and limits the first shell of the shellfish, while the second shell of the shellfish is located in the positioning groove. As the cylindrical turntable rotates relative to the first shellfish, the protrusion and the inclined bottom surface of the positioning groove work together to force the second shellfish to gradually open relative to the first shellfish, thereby realizing the rotary shell-opening of the shellfish.

[0010] Furthermore, the cylindrical turntable is injection molded from wear-resistant food-grade engineering plastic, and its surface is provided with a flexible passivation layer; the radius of the positioning groove ranges from 3cm to 6cm, which is used to adaptively accommodate shellfish of different sizes; the rotation speed of the cylindrical turntable is 90r / min-120r / min. The outside of the rotating shell opening unit is also provided with a splash guard, which is located around the pair of cylindrical turntables.

[0011] Furthermore, the shell-meat separation unit includes an inclined perforated separation ramp, an adjustable frequency vibration motor electrically connected to the perforated separation ramp, and a drawer-type shell collection trough located below the output end of the perforated separation ramp; a shell meat guide channel is provided below the perforated separation ramp to guide the shell meat into the shell meat separation unit.

[0012] Furthermore, the angle of the perforated separation bevel is 15°-25°, the diameter of the hole is 6-10mm, and the edge of the hole is smooth and burr-free.

[0013] Furthermore, the skirt meat separation unit includes a pair of food-grade rubber rollers rotating in opposite directions, a rubber roller drive motor driving the pair of food-grade rubber rollers to rotate in opposite directions, and a collection trough disposed below the rubber rollers for collecting the skirt and adductor muscle; a gap is formed between the rubber rollers to allow the skirt viscera to pass through, and the rubber rollers are used to smoothly convey the adductor muscle forward by rotating, so that the adductor muscle slides into the collection trough, while the skirt viscera fall into the collection trough through the gap.

[0014] Furthermore, the rubber roller is integrally molded from liquid silicone with a Shore A hardness of 50°-70°; the surface of the rubber roller is provided with concave spiral stripes; and the linear velocity of the rubber roller is 3.5 cm / s.

[0015] Furthermore, the skirt meat separation unit also includes an adjustment mechanism for adjusting the distance between the pair of rubber rollers. The adjustment mechanism includes an adjustment bolt disposed on the rubber roller bearing seat. The relative distance between the rubber rollers is changed by tightening or loosening the adjustment bolt. The adjustment mechanism adjusts the distance between the rubber rollers in the range of 0.5cm-1cm.

[0016] Compared with existing technologies, the shellfish meat extraction device provided by this invention integrates the entire shellfish meat extraction process into a compact device by employing a feeding and shaping unit, a shell-opening unit, a shell-meat separation unit, and a skirt-meat separation unit arranged sequentially in a vertical direction. This achieves automated continuous operation, significantly reducing manual labor intensity and improving processing efficiency. Specifically, the shell-opening unit uses a pair of opposing rotating cylindrical turntables. The turntables have positioning grooves and protrusions, with the bottom surface of the grooves extending inclined from the center to the edge. During operation, the protrusions hold one shell of the shellfish, while the other shell falls into the inclined groove. As the turntables rotate relative to each other, the inclined bottom surface generates a gradually increasing opening torque, gently opening the shell along the natural seam. This avoids the impact and strong compression of traditional shell-opening methods, significantly reducing the shellfish meat breakage rate and ensuring the integrity and appearance of the shellfish meat. Furthermore, the shell-meat separation unit and the skirt-meat separation unit sequentially receive materials, respectively achieving automatic separation of the shell and shellfish meat, and fine sorting of the adductor muscle and skirt viscera, resulting in high separation purity and low loss. The machine has a compact structure, small footprint, and low cost, making it suitable for small and micro-sized scenarios such as farmers and small processing plants, and has good promotional value. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the overall structure of the shellfish meat extraction device provided by the present invention; Figure 2 Another structural schematic diagram of the shellfish meat extraction device provided by the present invention; Figure 3 This is a top view of the shellfish meat extraction device provided by the present invention; Figure 4 This is a schematic diagram of the shell and meat separation unit structure of the shell and meat extraction device provided by the present invention; Figure 5 A schematic diagram of a single cylindrical turntable structure of the shellfish meat extraction device provided by the present invention; Figure 6 This is a schematic diagram of the skirt meat separation unit structure of the shellfish meat extraction device provided by the present invention.

[0019] Figure label: 1-Frame; 2-Feeding and shaping unit; 3-Swivel shell opening unit; 4-Shell-meat separation unit; 5-Skirt-meat separation unit; 6-Single-chip microcomputer control box; 7-Vibrating hopper; 8-Guide plate; 9-Guide limiting groove; 11-Cylindrical turntable; 12-Positioning groove; 13-Protrusion; 14-Feed inlet; 15-Reduction drive motor; 16-Synchronous transmission mechanism; 17-Splashproof cover; 21-Perforated separation slope; 22-Adjustable frequency vibration motor; 23-Drawer-type shell collecting trough; 24-Shell meat guiding channel; 25-Food-grade rubber roller; 26-Collection trough; 27-Concave spiral stripes; 28-Adjusting mechanism; 29-Rubber roller bearing seat; 30-Rubber roller drive motor. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] To address the problems of high impact during shell opening, high meat breakage rate, and poor equipment adaptability in existing technologies, this invention provides a shellfish meat extraction device. This device employs a rotary, gentle shell opening mechanism and multi-stage separation technology, which significantly reduces meat breakage rate and improves meat purity and processing efficiency. Specific embodiments and accompanying drawings are described below. Figure 1-6 Please provide a detailed explanation.

[0023] Please see Figure 1 The shell meat extraction device provided in this embodiment includes at least a frame 1, and a feeding and shaping unit 2, a shell opening unit 3, a shell meat separation unit 4, a skirt meat separation unit 5 and a control system 6 arranged sequentially along the vertical direction on the frame 1.

[0024] In practical implementation, the frame 1, serving as the supporting foundation for the entire device, can be constructed from welded stainless steel square tubing with anodized surface treatment, ensuring both structural strength and meeting the corrosion resistance requirements of the aquatic product processing environment. The feeding and shaping unit 2, the rotating shell-opening unit 3, the shell-meat separation unit 4, and the skirt-meat separation unit 5 are arranged vertically from top to bottom, forming a compact, linear assembly line with a small footprint, facilitating handling and installation. The feeding and shaping unit 2 is used for automatic feeding and posture correction of the cooked shellfish. Its discharge end is located above the feed end of the rotating shell-opening unit 3, ensuring that the shellfish smoothly fall into the shell-opening station by gravity.

[0025] Please see Figure 4-5 The shell-opening unit 3 is used for opening shells of mollusks by a rotary mechanism. It includes a pair of opposing rotating cylindrical turntables 11. Multiple positioning grooves 12 are spaced circumferentially on each cylindrical turntable 11, with protrusions 13 formed between adjacent positioning grooves 12. The bottom surface of each positioning groove 12 extends downwards at an angle from the center of the turntable to the edge. This inclined bottom surface structure allows the shell of the mollusk to experience a gradually increasing opening torque as the turntable rotates, achieving a gentle shell opening.

[0026] The shell-meat separation unit 4 is used to separate the shell from the shell meat after it has been opened. It is located below the discharge end of the opening shell-opening unit 3 and directly receives the mixture after the shell has been opened. The skirt meat separation unit 5 is used to separate the adductor muscle from the skirt and viscera. It is located below the discharge end of the shell-meat separation unit 4 and performs fine sorting of the separated shell meat mixture. The control system 6 is electrically connected to the feeding and shaping unit 2, the opening shell-opening unit 3, the shell-meat separation unit 4, and the skirt meat separation unit 5, respectively, and is used to control the coordinated action of each unit to achieve one-button start and fully automatic continuous operation. Through the coordinated cooperation of the above components, the device can open the shells of shellfish in a gentle opening manner, avoiding damage to the shell meat and laying the foundation for subsequent efficient separation.

[0027] In practical implementation, the control system 6 uses a single-chip microcomputer control box, which is fixedly installed on the frame 1. The control box panel is equipped with operation buttons and status indicator lights. The control system 6 is electrically connected to the moisture-proof vibration motor of the feeding and shaping unit 2, the reduction drive motor 15 of the shell opening unit 3, the adjustable frequency vibration motor 22 of the shell and meat separation unit 4, and the rubber roller drive motor 30 of the skirt and meat separation unit 5. After the user starts the system with one button on the operation panel, the control system 6 controls the sequential actions of each unit according to the preset timing. The control system 6 can also adjust the vibration frequency of the vibrating hopper 7, the vibration intensity of the perforated separation slope 21, and the rotation speed of the rubber roller 25 according to the material characteristics to adapt to the processing needs of shellfish of different sizes, especially suitable for scallops. At the same time, the control system 6 is equipped with an emergency stop button and an overload protection module, which automatically cuts off the power and stops the machine when the equipment jams or malfunctions, ensuring operational safety.

[0028] Optionally, please refer to Figure 2-3 The feeding and shaping unit 2 further includes an inclined vibrating hopper 7, a moisture-proof vibrating motor electrically connected to the vibrating hopper 7, a guide plate 8 connected to the discharge port of the vibrating hopper 7, and a guide limiting groove 9 disposed at the outlet end of the guide plate 8. In specific implementation, the vibrating hopper 7 is installed at an inclination, and its inclination angle can be adjusted according to the characteristics of the material. The moisture-proof vibrating motor is fixedly installed on the frame 1 and electrically connected to the vibrating hopper 7. After starting, it drives the hopper to generate high-frequency, low-amplitude vibration. After the shellfish are poured into the hopper in batches, they automatically complete posture correction under the action of vibration, relying on their own geometric asymmetry and center of gravity shift, and the direction of the shell opening tends to be consistent. Shellfish that do not conform to a stable posture will flow back to the rear end of the hopper during vibration to reorder, ensuring that the shellfish discharged in the end have a uniform posture. The guide limiting groove 9 is set at the outlet end of the guide plate 8. Its width is adapted to the size of the shellfish, so that the shellfish are discharged in a single row with uniform spacing. They smoothly enter the opening unit 3 through the guide plate 8 without stacking, jamming, or deviation, effectively ensuring the accuracy of the subsequent opening process.

[0029] Optionally, the inclination angle of the vibrating hopper 7 is 10°-20°, and its vibration frequency is 30-50Hz. The inner wall of the vibrating hopper 7 is polished, and the surface material in contact with shellfish is made of stainless steel or wear-resistant engineering plastic. In specific implementations, setting the inclination angle of the vibrating hopper 7 to 15° and the vibration frequency to 40Hz can achieve better feeding results. The polishing treatment of the inner wall can reduce the frictional resistance of the material and prevent shellfish meat from sticking to the wall. The stainless steel or wear-resistant engineering plastic material meets food-grade hygiene standards, is easy to rinse and disinfect, and will not cause secondary pollution to the shellfish.

[0030] Optionally, such as Figure 4-5 As shown, in the rotating shell-opening unit 3, a pair of positioning grooves 12 on the cylindrical turntables 11 are arranged opposite each other at the feeding end and together form a feeding port 14 for receiving shellfish; the rotating shell-opening unit 3 also includes a reduction drive motor 15 and a synchronous transmission mechanism 16. The reduction drive motor 15 drives the cylindrical turntables 11 to rotate relative to each other in opposite directions through the synchronous transmission mechanism 16; during rotation, the protrusion 13 abuts against and limits the first shell of the shellfish, while the second shell of the shellfish is located in the positioning groove 12. As the cylindrical turntables 11 rotate relative to each other, the protrusion 13 and the inclined bottom surface of the positioning groove 12 work together to force the second shell to gradually open relative to the first shell, so as to realize the rotating shell-opening of the shellfish.

[0031] In practice, the power output of the reduction drive motor 15 is transmitted to two cylindrical turntables 11 via a synchronous transmission mechanism 16 (in this embodiment, chain drive is used, which is existing technology; those skilled in the art can implement this based on existing chain drive technology, and it will not be elaborated here), causing the two turntables to rotate at the same linear velocity but in opposite directions. When the shellfish falls into the feed inlet 14, the two cylindrical turntables 11 rotate, one shell is held and fixed by the protrusion 13, and the other shell falls into the inclined bottom surface of the positioning groove 12. As the turntables rotate, the inclined bottom surface gradually lifts the second shell, generating a slow and uniform opening torque, which opens the shell along the natural seam. The entire shell-opening process is without impact or compression, and the shellfish meat integrity rate is significantly higher than that of traditional violent shell-opening methods.

[0032] Optionally, the cylindrical turntable 11 is injection molded from wear-resistant food-grade engineering plastic, and its surface is provided with a flexible passivation layer; the radius of the positioning groove 12 ranges from 3cm to 6cm, which is used to adaptively accommodate shellfish of different sizes; the rotation speed of the cylindrical turntable 11 is 90r / min to 120r / min; the outside of the opening unit 3 is also provided with an anti-splash shield 17, which is located around the pair of cylindrical turntables 11. In specific implementation, the turntables injection molded from engineering plastic are lightweight and have high strength, and the flexible passivation layer on the surface can further reduce the risk of scratching the shells and shellfish meat. The radius of the positioning groove 12 is set to 3-6cm, which can cover the size range of mainstream species such as scallops, bay scallops, oysters, and clams, so as to achieve adaptive centering and clamping. The rotation speed of the cylindrical turntable 11 is controlled at about 106.5r / min, which ensures the shell opening efficiency and avoids excessive centrifugal force due to excessive rotation speed. The splash guard 17 prevents shell fragments from flying out during the opening process and also provides safety protection.

[0033] Optionally, please refer to Figure 2 The shell-meat separation unit 4 includes an inclined perforated separation ramp 21, an adjustable frequency vibration motor 22 electrically connected to the perforated separation ramp 21, and a drawer-type shell collection trough 23 located below the output end of the perforated separation ramp 21. Below the perforated separation ramp 21 is a shell meat guiding channel 24 for guiding the shell meat into the skirt meat separation unit 5. In practice, the perforated separation ramp 21 is installed at an angle, and the mixture after shell opening falls onto the ramp. The adjustable frequency vibration motor 22 drives the ramp to generate controllable vibration, causing the material to be conveyed downwards under the combined action of gravity and vibration. Smaller shell meat and skirts pass through the perforations of the ramp and fall into the shell meat guiding channel 24 below, while larger shells slide along the ramp into the drawer-type shell collection trough 23 at the end, achieving automatic shell-meat separation. The shell meat guiding channel 24 concentrates the falling shell meat and guides it to the entrance of the skirt meat separation unit 5, preventing material spillage or deviation.

[0034] Optionally, the angle of the perforated separating inclined surface 21 is 15°-25°, the aperture is 6-10mm, and the edge of the aperture is smooth and burr-free. In specific implementations, setting the angle of the perforated separating inclined surface 21 to 20° and the aperture to 8mm can achieve better separation results. An aperture that is too small will cause the shellfish meat to clog, while an aperture that is too large will cause the shellfish to fall out accidentally. The edge of the aperture is precision-punched with laser and deburred to ensure that it does not snag the shellfish meat and guarantees smooth passage of the material.

[0035] Optionally, please refer to Figure 6The skirt meat separation unit 5 includes a pair of opposing rotating food-grade rubber rollers 25, a collection groove 26 disposed below the rubber rollers 25 for collecting the skirt and adductor muscle, and a rubber roller drive motor 30 for driving the pair of food-grade rubber rollers 25 to rotate in opposite directions. A gap is formed between the rubber rollers 25 to allow the skirt viscera to pass through. The rubber rollers 25 are used to smoothly convey the adductor muscle forward by rotating, allowing the adductor muscle to slide into the collection groove 26, while the skirt viscera fall into the collection groove 26 through the gap. In specific implementation, the collection groove 26 can be set as two independent chambers or partitions, respectively receiving the adductor muscle and the skirt viscera. The size of the gap between the rubber rollers 25 is adjusted according to the thickness of the skirt, so that the soft skirt and viscera pass through the gap under the action of gravity and fall into the skirt collection area, while the compact adductor muscle is clamped by the friction of the rubber rollers 25 surface and conveyed forward, finally falling into the adductor muscle collection area. This structure utilizes the difference in physical properties between the adductor muscle and the skirt to achieve flexible separation without damaging the adductor muscle.

[0036] Optionally, the rubber roller 25 is integrally molded from liquid silicone with a Shore A hardness of 50°-70°; the surface of the rubber roller 25 is provided with concave spiral stripes 27; the linear speed of the rubber roller 25 is 3.5 cm / s. In specific implementation, a liquid silicone rubber roller with a Shore A hardness of 60° is used, which is moderately soft and hard, providing sufficient friction without damaging the clam meat. The concave spiral stripes 27 increase the contact area between the rubber roller and the material, while the spiral structure guides the material forward along the axial direction, avoiding material accumulation. The low-speed operation of 3.5 cm / s ensures a stable and controllable separation process and a high clam integrity rate.

[0037] Optionally, the skirt meat separation unit 5 further includes an adjustment mechanism 28 for adjusting the distance between the pair of rubber rollers 25. The adjustment mechanism 28 includes an adjustment bolt mounted on the rubber roller bearing seat 29. Tightening or loosening the adjustment bolt changes the relative distance between the rubber rollers 25. The adjustment mechanism 28 adjusts the distance between the rubber rollers 25 within a range of 0.5cm-1cm. In practice, the user can manually tighten or loosen the adjustment bolt according to the skirt thickness of different shellfish species. Tightening the bolt reduces the distance between the rubber rollers 25, suitable for small-sized shellfish; loosening the bolt increases the distance, suitable for large-sized shellfish. This adjustment mechanism 28 has a simple structure and is easy to operate, allowing for quick adjustment without the need for special tools, significantly improving the versatility of the device.

[0038] In summary, the shellfish meat extraction device provided in this embodiment achieves fully automated operation of the entire process of shellfish processing after steaming, from feeding, shell opening, shell-meat separation to skirt-meat separation, through the coordinated operation of a feeding and shaping unit, a rotating shell-opening unit, a shell-meat separation unit, and a control system arranged sequentially along the vertical direction. Specifically, the use of opposing rotating cylindrical turntables and a positioning groove structure on the inclined bottom surface gently opens the shellfish shells, effectively avoiding damage to the shellfish meat. The perforated separation ramp and graded separation by rubber rollers significantly improve the purity and integrity rate of the extracted adductor muscle. This device is compact, occupies little space, is low in cost, and is easy to operate, making it widely applicable to small-scale scenarios such as coastal aquaculture farmers and small processing plants, and possesses extremely high practical value and promising prospects for promotion.

[0039] Although this document frequently uses terms such as frame, feeding and shaping unit, opening and shell-opening unit, shell-meat separation unit, skirt-meat separation unit, cylindrical turntable, positioning groove, protrusion, perforated separation slope, and rubber roller, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention. It should be noted that the specific structures and parameters (such as tilt angle, rotational speed, hardness, etc.) of the units described in this embodiment are merely examples, and those skilled in the art can make reasonable adjustments according to the actual material characteristics and processing requirements, all of which fall within the protection scope of this invention.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A shellfish meat extraction device, comprising a frame, characterized in that: It also includes a feeding and shaping unit, a shell opening unit, a shell-meat separation unit, a skirt-meat separation unit, and a control system, which are arranged sequentially along the vertical direction on the frame. The feeding and shaping unit is used for automatic feeding and posture correction of shellfish, and its discharge end is located above the feeding end of the opening shell unit. The shell-opening unit is used to open shells of mollusks by a screw-opening method. It includes a cylindrical turntable that rotates in opposite directions. Multiple positioning grooves are arranged circumferentially on the cylindrical turntable, and a protrusion is formed between adjacent positioning grooves. The bottom surface of the positioning groove extends downward at an incline from the center of the turntable to the edge. The shell-meat separation unit is used to separate the shell from the meat after the shell has been opened, and it is located below the discharge end of the rotating shell-opening unit. The skirt meat separation unit is used to separate the adductor muscle from the skirt viscera, and it is located below the discharge end of the shell meat separation unit; The control system is electrically connected to the feeding and shaping unit, the shell-opening unit, the shell-meat separation unit, and the skirt-meat separation unit, respectively, and is used to control the coordinated operation of each unit.

2. The shellfish meat extraction device according to claim 1, characterized in that: The feeding and shaping unit also includes an inclined vibrating hopper, a moisture-proof vibrating motor electrically connected to the vibrating hopper, a guide plate connected to the discharge port of the vibrating hopper, and a guide limiting groove disposed at the outlet end of the guide plate; the moisture-proof vibrating motor drives the vibrating hopper to vibrate, so that the shellfish automatically completes posture correction under the action of vibration by relying on their own geometric asymmetry, and is discharged in a single row and uniform posture along the guide limiting groove, and enters the opening shell unit through the guide plate.

3. The shellfish meat extraction device according to claim 2, characterized in that: The inclination angle of the vibrating hopper is 10°-20°, and its vibration frequency is 30-50Hz. The inner wall of the vibrating hopper is polished, and the surface material that comes into contact with the shellfish is made of stainless steel or wear-resistant engineering plastic.

4. The shellfish meat extraction device according to claim 1, characterized in that: In the aforementioned shell-opening unit, the positioning grooves on a pair of cylindrical turntables are positioned opposite each other at the feeding end and together form a feeding port for receiving shellfish. The rotary shell-opening unit also includes a geared drive motor and a synchronous transmission mechanism. The geared drive motor drives the cylindrical turntable to rotate in opposite directions through the synchronous transmission mechanism. During rotation, the protrusion abuts against and limits the first shell of the shellfish, while the second shell of the shellfish is located in the positioning groove. As the cylindrical turntable rotates relative to the first shellfish, the protrusion and the inclined bottom surface of the positioning groove work together to force the second shellfish to gradually open relative to the first shellfish, thereby realizing the rotary shell-opening of the shellfish.

5. The shellfish meat extraction device according to claim 4, characterized in that: The cylindrical turntable is injection molded from wear-resistant food-grade engineering plastic, and its surface is provided with a flexible passivation layer; the radius of the positioning groove ranges from 3cm to 6cm, which is used to adaptively accommodate shellfish of different sizes; the rotation speed of the cylindrical turntable is 90r / min-120r / min. The outside of the rotating shell opening unit is also provided with a splash guard, which is located around the pair of cylindrical turntables.

6. The shellfish meat extraction device according to claim 1, characterized in that: The shell-meat separation unit includes an inclined perforated separation ramp, an adjustable frequency vibration motor electrically connected to the perforated separation ramp, and a drawer-type shell collection trough located below the output end of the perforated separation ramp; a shell meat guide channel is provided below the perforated separation ramp to guide the shell meat into the shell meat separation unit.

7. The shellfish meat extraction device according to claim 6, characterized in that: The angle of the perforated separation bevel is 15°-25°, the diameter of the hole is 6-10mm, and the edge of the hole is smooth and burr-free.

8. The shellfish meat extraction device according to claim 1, characterized in that: The skirt meat separation unit includes a pair of food-grade rubber rollers rotating in opposite directions, a rubber roller drive motor driving the pair of food-grade rubber rollers to rotate in opposite directions, and a collection trough disposed below the rubber rollers for collecting the skirt and adductor muscle; a gap is formed between the rubber rollers to allow the skirt viscera to pass through, and the rubber rollers are used to smoothly convey the adductor muscle forward by rotating, so that the adductor muscle slides into the collection trough, while the skirt viscera fall into the collection trough through the gap.

9. The shellfish meat extraction device according to claim 8, characterized in that: The rubber roller is integrally molded from liquid silicone, with a Shore A hardness of 50°-70°; the surface of the rubber roller is provided with concave spiral stripes; the linear velocity of the rubber roller is 3.5 cm / s.

10. The shellfish meat extraction device according to claim 8, characterized in that: The skirt meat separation unit also includes an adjustment mechanism for adjusting the distance between a pair of rubber rollers. The adjustment mechanism includes an adjustment bolt disposed on the rubber roller bearing seat. The relative distance between the rubber rollers is changed by tightening or loosening the adjustment bolt. The adjustment mechanism adjusts the distance between the rubber rollers in the range of 0.5cm-1cm.

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