Energy-saving mussel meat and shell separating device

Abstract

The application relates to an energy-saving mussel meat and shell separating device and relates to the technical field of food processing machinery. The device comprises a bottom plate, a support column, a first frame body, a second frame body, a supporting plate, an extrusion plate, a gas cylinder, a motor, a rocker arm and a connecting rod mechanism. The motor drives the rocker arm to rotate through a belt, and the connecting rod mechanism drives the supporting plate and the extrusion plate to move horizontally and reciprocally in a sliding groove, and the gas cylinder controls the second frame body to ascend and descend to adjust the distance between the extrusion plate and the supporting plate. The application can realize efficient and energy-saving separation of mussel meat and shells, can reduce energy consumption through integrated driving of a single power source, and can improve stroke matching of moving parts to improve separation efficiency.

Description

Technical Field

[0001] This application relates to the field of food processing machinery technology, specifically to an energy-saving mussel meat-shell separation device. Background Technology

[0002] Mussels are an important marine economic shellfish, and the separation of meat and shell is a core step in their processing. Traditional methods mainly rely on manual operation or semi-automated equipment. In existing technologies, a common approach uses a multi-motor driven mechanical structure for separation. Independent power sources control the movement of a support platform and a kneading component. The support platform has positioning protrusions, and the kneading component is equipped with rolling elements. Both apply pressure vertically and coordinate horizontal reciprocating motion to complete the separation. This approach converts rotational motion into linear motion through a motor-driven crank-connecting rod mechanism, causing relative displacement between the kneading component and the support platform. Simultaneously, pneumatic components are used to adjust the spacing between the components to accommodate different product specifications.

[0003] However, in the existing technology, the distributed power system leads to redundancy in the energy transfer path, resulting in high energy consumption during equipment operation, and the insufficient stroke matching of moving parts affects the separation efficiency. Summary of the Invention

[0004] This application provides an energy-saving mussel meat-shell separation device that can solve the technical problems of high energy consumption and insufficient stroke matching of moving parts during the mussel meat-shell separation process.

[0005] To achieve the above objectives, this application provides the following technical solution: This application provides an energy-saving mussel meat-shell separation device, which includes a base plate, base feet, support columns, receiving box, first frame, second frame, tray, squeezing and rubbing plate, compression spring, guide rod, cylinder, motor, drive wheel, belt, rocker arm, first connecting rod, and second connecting rod; The base is set at the four corners of the base plate, the support is fixedly set on the base plate and the four support are set in parallel, the first frame is fixedly set on the top of the support, the receiving box is supported on the base plate and located below the first frame, the four corners of the first frame are respectively set with compression springs, and the top of the compression springs is fixedly set with the second frame. The cylinder is fixedly mounted on the first frame, the output end of the cylinder is connected to the second frame, the guide rod is fixedly mounted on the first frame and is positioned opposite to the cylinder, the second frame is provided with a guide hole, the guide rod cooperates with the guide hole, and the extension and retraction of the output end of the cylinder drives the second frame to move up and down along the length of the guide rod. The motor is fixedly mounted on the base plate. The output end of the motor is connected to the drive wheel, which is connected to the belt. The belt is connected to the rocker arm. The motor drives the drive wheel to rotate, and the belt drives the rocker arm to rotate. The bottom of the rocker arm is rotatably connected to the base plate, and the top of the rocker arm is rotatably connected to the support frame located on the upper part of the second frame. The first frame and the second frame have inner sliding grooves. The tray is slidably connected to the sliding groove of the first frame, and the squeezing and rubbing plate is slidably connected to the sliding groove of the second frame. One end of the first connecting rod is rotatably connected to the lower part of the rocker arm, and the other end of the first connecting rod is rotatably connected to the bottom of the tray. One end of the second connecting rod is rotatably connected to the upper part of the rocker arm, and the other end of the second connecting rod is rotatably connected to the top of the squeezing and rubbing plate. Under the rotational movement of the rocker arm, the tray and the squeezing and rubbing plate are driven to move within the first frame and the second frame respectively through the first connecting rod and the second connecting rod.

[0006] In one optional embodiment, the pallet is provided with ribs, and multiple ribs are spaced apart along the length of the pallet. The ribs protrude in the direction toward the second frame. Rollers are provided at the bottom of the squeezing plate, and multiple rollers are spaced apart along the length of the squeezing plate. The two ends of the rollers are rotatably connected to the squeezing plate.

[0007] In one optional embodiment, the rocker arm includes a first vertical rod and a second vertical rod. The first vertical rod is located at the lower part of the rocker arm and one end of the first connecting rod is rotatably connected to the first vertical rod. The second vertical rod is located at the upper part of the rocker arm and one end of the second connecting rod is rotatably connected to the second vertical rod. The radial dimension between the axis of the first vertical rod and the rotation center of the rocker arm is a first distance, and the radial dimension between the axis of the second vertical rod and the rotation center of the rocker arm is a second distance. The second distance is greater than the first distance, and the first distance is greater than 0.

[0008] In one alternative embodiment, along the length of the extrusion plate, the outer diameter of the roller located in the middle of the extrusion plate is larger than the outer diameter of the rollers located at both ends of the extrusion plate.

[0009] In one alternative embodiment, the length of the groove in the first frame is greater than the length of the tray, and the length of the groove in the second frame is greater than the length of the squeezing board.

[0010] In one alternative embodiment, the outer diameter of the roller is larger than the spacing between adjacent ribs.

[0011] In one alternative embodiment, the chute is arranged horizontally, the support plate and the extrusion plate are both arranged horizontally, and the roller and the rib are arranged opposite each other.

[0012] This application provides an energy-saving mussel meat-shell separation device. The device uses a motor as a single power source to drive a drive wheel to rotate, which in turn drives a rocker arm via a belt drive. The rotational motion is then converted into horizontal reciprocating movement of a support plate and a squeezing plate within a chute via a first and second connecting rod, respectively. This achieves a high degree of integration of the power transmission path, significantly reducing equipment operating energy consumption. The output end of a cylinder extends and retracts, driving the second frame to rise and fall along a guide rod, allowing the squeezing plate to move closer to or further away from the support plate. This adapts to mussels of different sizes and precisely adjusts the squeezing pressure, improving the stroke matching of moving parts. The support plate and squeezing plate move synchronously in opposite directions under the rotation of the rocker arm, forming a continuous squeezing action. This ensures stable support of the mussel shell while applying effective force to the meat, avoiding incomplete separation due to movement mismatch. The first frame is connected to the second frame via a compression spring, and the combination of the guide rod and guide hole ensures the smoothness of the lifting motion, further improving the reliability of the equipment operation. This design fundamentally optimizes energy utilization efficiency by using a single motor to drive multiple components in tandem, while ensuring the stability and adaptability of the separation process. Attached Figure Description

[0013] Figure 1 This application provides a schematic diagram of the structure of an energy-saving mussel meat-shell separation device. Figure 2 Another structural schematic diagram of an energy-saving mussel meat-shell separation device provided in this application; Figure 3 Another structural schematic diagram of an energy-saving mussel meat-shell separation device provided in this application; Figure 4 This is a schematic diagram of the structure of an energy-saving mussel meat-shell separation device provided in this application from another angle. Detailed Implementation

[0014] [Numbering and Naming] Base Plate 11, Foot 12, Support 13, Receiving Box 14, First Frame 21, Second Frame 22, Support Plate 31, Protruding Rib 32, Extrusion Board 33, Roller 34, Compression Spring 15, Guide Rod 16, Cylinder 17, Motor 41, Drive Wheel 42, Belt 43, Rocker Arm 44, First Vertical Rod 441, Second Vertical Rod 442, First Connecting Rod 23, Second Connecting Rod 24 The present invention will now be described in further detail with reference to embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it.

[0015] In the mussel processing industry, existing meat-shell separation processes mostly rely on manual shelling or high-energy-consuming hydraulic / pneumatic stamping equipment, resulting in problems such as high labor intensity, low separation efficiency, high mussel meat breakage rate, and high energy consumption per unit processing area. Although some mechanical kneading devices incorporate motor drive, they generally use multiple motors 41 to independently control the tray 31 and the kneading components, leading to complex transmission structures, cumulative energy consumption, poor synchronization, and difficulty in adapting to the differences in shell thickness and flexibility of mussels of different sizes. The above-mentioned technological status indicates an urgent need for an energy-saving mussel meat-shell separation device with high structural integration, a single power source, adjustable pressure, reliable motion coordination, and suitability for large-scale production.

[0016] See Figures 1-4 As shown, this application provides an energy-saving mussel meat-shell separation device, including: a base plate 11, a base foot 12, a support column 13, a receiving box 14, a first frame 21, a second frame 22, a support plate 31, a squeezing and rubbing plate 33, a compression spring 15, a guide rod 16, a cylinder 17, a motor 41, a drive wheel 42, a belt 43, a rocker arm 44, a first connecting rod 23, and a second connecting rod 24; The base feet 12 are set at the four corners of the base plate 11, the support columns 13 are fixedly set on the base plate 11, and the four support columns 13 are arranged in parallel. The first frame 21 is fixedly set on the top of the support columns 13. The receiving box 14 is supported on the base plate 11 and located below the first frame 21. The four corners of the first frame 21 are respectively provided with compression springs 15, and the top of the compression springs 15 is fixedly set with the second frame 22. The cylinder 17 is fixedly mounted on the first frame 21. The output end of the cylinder 17 is connected to the second frame 22. The guide rod 16 is fixedly mounted on the first frame 21 and is positioned opposite to the cylinder 17. The second frame 22 is provided with a guide hole. The guide rod 16 cooperates with the guide hole. The extension and retraction movement of the output end of the cylinder 17 drives the second frame 22 to move up and down along the length direction of the guide rod 16. The motor 41 is fixedly mounted on the base plate 11. The output end of the motor 41 is connected to the drive wheel 42, the drive wheel 42 is connected to the belt 43, and the belt 43 is connected to the rocker arm 44. The motor 41 drives the drive wheel 42 to rotate, and the belt 43 drives the rocker arm 44 to rotate. The bottom of the rocker arm 44 is rotatably connected to the base plate 11, and the top of the rocker arm 44 is rotatably connected to the support frame located on the upper part of the second frame 22. The inner side of the frame of the first frame 21 and the second frame 22 has a sliding groove. The support plate 31 is slidably connected to the sliding groove of the first frame 21, and the squeezing and rubbing plate 33 is slidably connected to the sliding groove of the second frame 22. One end of the first connecting rod 23 is rotatably connected to the lower part of the rocker arm 44, and the other end of the first connecting rod 23 is rotatably connected to the bottom of the support plate 31. One end of the second connecting rod 24 is rotatably connected to the upper part of the rocker arm 44, and the other end of the second connecting rod 24 is rotatably connected to the top of the squeezing and rubbing plate 33. Under the rotational movement of the rocker arm 44, the support plate 31 and the squeezing and rubbing plate 33 are driven to move within the first frame 21 and the second frame 22 respectively through the first connecting rod 23 and the second connecting rod 24.

[0017] The base plate 11 is a rectangular steel plate or cast iron plate with a thickness of 15 mm to 30 mm, used to support all structural components and provide an installation reference surface; the four corners are provided with feet 12, which are adjustable height threaded feet or rubber shock-absorbing pads, used to level the machine and absorb operating vibrations; the support column 13 is a cylindrical or square tubular metal rod made of Q235 steel or aluminum alloy, and the four support columns 13 are parallel to each other and set at the same height, forming a vertical load-bearing frame; the first frame 21 is a rigid rectangular frame welded from profiles, fixed to the top of the support column 13, and serves as the installation base for the upper functional modules.

[0018] The receiving box 14 is used to collect the mussel meat and shell fragments that fall after separation. It is an open-top stainless steel box, supported on the base plate 11 and directly below the first frame 21. Its opening size is larger than the projected area of ​​the support plate 31 to ensure unobstructed material drop. The compression spring 15 is set at the four corners of the first frame 21. Its axis is vertical. One end is fixed to the bottom surface of the first frame 21, and the other end is fixed to the top surface of the second frame 22. It is used to provide initial pre-pressure when the cylinder 17 is not activated and to buffer the impact when the second frame 22 descends into place. The compression spring 15 is a cylindrical helical compression spring made of 60Si2Mn, with a free height of 80 mm to 120 mm and a spring stiffness of 5 N / mm to 15 N / mm.

[0019] Cylinder 17 is a double-acting, single-piston rod standard cylinder with a rated working pressure of 0.4 MPa to 0.7 MPa. Its cylinder flange is fixed to the bottom surface of the first frame 21, and the piston rod extends downward and is fixed to the top surface of the second frame 22. The guide rod 16 is a smooth shaft structure with surface hardening treatment. Both ends are fixed to the first frame 21 through bearing seats and are symmetrically arranged with cylinder 17 to ensure that the second frame 22 can be raised and lowered smoothly without deflection. The second frame 22 is a rectangular frame with a similar outline to the first frame 21. Guide holes are opened on it, and linear bearings are embedded in the guide holes and slide with the guide rod 16. When the output end of cylinder 17 extends and retracts, the second frame 22 rises and falls along the axial direction of the guide rod 16, with a lifting stroke of 20 mm to 50 mm. The lifting and lowering movement of the second frame 22 directly drives the extrusion plate 33 installed on it to move closer to or away from the support plate 31, realizing dynamic adjustment of the vertical extrusion pressure applied to the mussel.

[0020] The motor 41 is a three-phase asynchronous motor or a permanent magnet synchronous servo motor 41 with a rated power of 0.75 kW to 2.2 kW, and is fixed on the base plate 11; its output shaft is connected to the drive wheel 42, which is a pulley or sprocket, made of HT250 cast iron or PA66+GF30 engineering plastic; the belt 43 is a synchronous belt or V-belt, and its tension can be adjusted by adjusting the position of the motor 41 mounting plate.

[0021] The other end of the belt 43 is connected to the rocker arm 44, which swings back and forth in the horizontal plane around its bottom rotation center, with an swing angle range of ±15° to ±30°. The bottom of the rocker arm 44 is rotatably connected to the lug on the base plate 11 via a pin, and the top is rotatably connected to the support frame on the upper part of the second frame 22 via a pin. The support frame is an L-shaped reinforcing plate fixed to the top surface of the second frame 22. This connection method allows the top of the rocker arm 44 to rise and fall synchronously with the second frame 22 during the swinging process, while the bottom remains in a fixed spatial position, thereby ensuring the stability of the linkage kinematic relationship.

[0022] The inner sides of the first frame 21 and the second frame 22 are provided with sliding grooves, which are T-shaped grooves, dovetail grooves, or rectangular through grooves. The cross-sectional dimensions are designed to match the thickness of the support plate 31 and the extrusion plate 33. The support plate 31 is slidably connected to the sliding groove of the first frame 21. The support plate 31 is a long strip steel plate with flanges on both sides in the width direction that are embedded in the sliding groove to achieve guidance and limiting. The extrusion plate 33 is slidably connected to the sliding groove of the second frame 22, and its structural form corresponds to that of the support plate 31. One end of the first connecting rod 23 is rotatably connected to the lower part of the rocker arm 44 by a pin, and the other end is rotatably connected to the bottom center position of the support plate 31 by a pin. Its length is 180 mm to 260 mm. One end of the second connecting rod 24 is rotatably connected to the upper part of the rocker arm 44 by a pin, and the other end is rotatably connected to the top center position of the extrusion plate 33 by a pin. Its length is 220 mm to 300 mm. mm; During the reciprocating swing of the rocker arm 44 around the bottom rotation center, the first connecting rod 23 converts the arc motion of the lower part of the rocker arm 44 into the horizontal reciprocating linear motion of the support plate 31 in the groove, and the second connecting rod 24 simultaneously converts the arc motion of the upper part of the rocker arm 44 into the opposite horizontal reciprocating linear motion of the squeezing and kneading plate 33 in the groove; the two motions are opposite in direction and have equal strokes, forming the basis of the opposing kneading action.

[0023] The upper and lower parts of the rocker arm 44 are equipped with rotating connection points with different radial distances, so that the first link 23 and the second link 24 can obtain different lever ratios under the same rocker arm 44 swing angle. This coordinates the movement phase and relative speed of the support plate 31 and the squeezing plate 33 without changing the output of the motor 41, thereby improving the kneading effectiveness. At the same time, the cylinder 17 independently adjusts the height of the squeezing plate 33, so that the vertical pressure and the horizontal kneading motion are decoupled and controllable, avoiding overpressure damage or underpressure incomplete separation due to shell thickness differences.

[0024] The working process and principle of this application are as follows: After the motor 41 is started, the drive wheel 42 drives the rocker arm 44 to swing back and forth around its bottom rotation center via the belt 43; the lower part of the rocker arm 44 pushes the tray 31 to move horizontally back and forth along the slide groove of the first frame 21 via the first connecting rod 23, and the upper part of the rocker arm 44 pulls the squeezing and rubbing plate 33 to move horizontally back and forth in the opposite direction along the slide groove of the second frame 22 via the second connecting rod 24; at this time, the tray 31 and the squeezing and rubbing plate 33 form a relative shearing and squeezing compound motion; at the same time, according to the specifications of the mussels to be processed, the second frame 22 is raised and lowered by the cylinder 17, which drives the squeezing and rubbing plate 33 to move closer to the tray 31, so that the distance between the two is reduced to the mussel shell thickness + reserved gap (0.5 mm ~ 2 mm). (mm), the compression spring 15 is further compressed to provide auxiliary pre-tightening force; the mussel is placed between the tray 31 and the squeezing plate 33. Under the combined action of horizontal relative motion and vertical pressure, the shell is subjected to periodic rolling, shearing and slight displacement, and the internal adhesion stress is gradually released, finally achieving the separation of meat and shell without damage; the separated mussel meat falls from the gap between the tray 31 and the squeezing plate 33 into the receiving box 14.

[0025] Through the above technical solution, this application achieves the following beneficial effects: A single motor 41 drives the rocker arm 44 via a belt 43, and drives the support plate 31 and the squeezing plate 33 to perform opposite horizontal reciprocating motions via the first connecting rod 23 and the second connecting rod 24 respectively. This eliminates the need for separate drive sources for the support plate 31 and the squeezing plate 33, significantly reducing the overall energy consumption and electrical control complexity. The cylinder 17 independently controls the lifting and lowering of the second frame 22, driving the squeezing plate 33 to move precisely vertically along the guide rod 16. This allows for flexible adaptation to the shell thickness differences of different mussel sizes without changing the operating parameters of the motor 41, improving the versatility of the device. Both the support plate 31 and the squeezing plate 33 are guided by sliding grooves to achieve motion constraints, and the position of the connecting rod connection point is geometrically optimized, ensuring a definite motion trajectory and high repeatability, avoiding structural damage caused by motion interference or off-center loading. The base 12, support column 13, first frame 21, and second frame 22 constitute a multi-level rigid support system, and the compression spring 15 provides buffering and pre-tensioning, resulting in smooth operation, low vibration, and long service life of the entire machine.

[0026] The application also provides an energy-saving mussel meat-shell separation device, wherein a rib 32 is provided on the tray 31, and multiple ribs 32 are spaced apart along the length of the tray 31. The ribs 32 protrude in the direction toward the second frame 22. A roller 34 is provided at the bottom of the squeezing and rubbing plate 33, and multiple rollers 34 are spaced apart along the length of the squeezing and rubbing plate 33. The two ends of the rollers 34 are rotatably connected to the squeezing and rubbing plate 33.

[0027] The support plate 31 supports the mussel shells to be separated and works in conjunction with the extrusion plate 33 during its downward movement to complete the separation of the meat and shell. The support plate 31 can be a stamped or injection-molded metal part, and its surface flatness can be set according to actual processing requirements, for example, the flatness tolerance can be controlled within ±0.1 mm. The ribs 32 are strip-shaped protrusions spaced along the length of the support plate 31 and protruding towards the second frame 22. Their cross-sectional shape can be rectangular, trapezoidal, semi-circular, or arc-shaped. For example, they can be rectangular ribs 32 with a height of 2 mm to 5 mm and a width of 3 mm to 8 mm. The center-to-center distance between adjacent ribs 32 can be set to 20 mm to 40 mm based on the average shell length of the mussel. mm; the function of the rib 32 is to form a line contact support ridge on the edge of the mussel shell, restrict the lateral slippage of the shell during the downward movement of the extrusion plate 33, improve the positioning stability of the shell, and provide a rigid reaction surface for the subsequent kneading of the roller 34; the rib 32 and the support plate 31 are integrally formed structures, and can also be fixed to the surface of the support plate 31 by welding, riveting or threaded connection; the rib 32 and the roller 34 at the bottom of the extrusion plate 33 are arranged opposite to each other, and the overlapping area of ​​their projections in the vertical direction constitutes the effective kneading working area.

[0028] The extrusion plate 33 is used to apply a reciprocating rolling and kneading force to the flesh inside the mussel shell supported by the support plate 31. The extrusion plate 33 can be an aluminum alloy casting or an engineering plastic molding part, and its overall thickness can be set to 15 mm to 30 mm according to the structural strength requirements. The roller 34 can refer to a cylindrical rotating roller installed at the bottom of the extrusion plate 33 and arranged at intervals along its length. Its two ends are rotatably connected to the extrusion plate 33 through bearings or bushings. The outer circumferential surface of the roller 34 contacts the mussel flesh and generates rolling friction.

[0029] The diameter of the roller 34 can be 8 mm to 20 mm, the length can be 10 mm to 25 mm, and the material can be rubber-coated metal core, polyurethane elastomer, or stainless steel polished surface. The function of the roller 34 is to transform the translation of the squeezing and rubbing plate 33 into rolling, squeezing, shearing and kneading the mussel meat, avoiding the tearing or residue of the meat caused by traditional flat plate squeezing.

[0030] When the squeezing plate 33 descends to near the support plate 31, a small gap (e.g., 0.5 mm to 2 mm) is formed between the lower edge of the roller 34 and the top of the rib 32. During the horizontal reciprocating motion of the squeezing plate 33, the roller 34 makes rolling contact with the top of the rib 32 with its outer circumference, thereby applying periodic and discontinuous local pressure to the mussel meat, causing the meat to peel off from the shell. The roller 34 and the squeezing plate 33 are rotatably connected through the shaft holes at both ends and the embedded bearing. The bearing type can be a deep groove ball bearing, an oilless lubricating bushing, or a self-lubricating bushing. This application embodiment does not make any special limitation on this.

[0031] Specifically, when the cylinder 17 drives the second frame 22 to move the squeezing and rubbing plate 33 down to the preset position, the motor 41 starts and drives the support plate 31 and the squeezing and rubbing plate 33 to perform reciprocating linear motion in the horizontal direction synchronously via the drive wheel 42, belt 43, rocker arm 44, and linkage mechanism. At this time, the roller 34 at the bottom of the squeezing and rubbing plate 33 continuously rolls and contacts the top of the rib 32 on the support plate 31 during the horizontal movement. Since the rib 32 has a directional protruding structure, the rolling path of the roller 34 is constrained to the extension direction of the rib 32, so that the kneading action is concentrated in the area where the mussel meat is located.

[0032] Meanwhile, the ribs 32 provide multi-point line support to the bottom of the mussel shell, suppressing warping and displacement of the shell during the kneading process, and ensuring that the rollers 34 always act on the interface between the flesh and the shell. This fit makes the kneading action both positioning stability and mechanical gentleness, which improves separation efficiency and reduces the flesh damage rate.

[0033] Through the above technical solutions, this application achieves the following: because the tray 31 is provided with ribs 32 that are spaced apart along the length direction and protrude toward the second frame 22, it provides directional line contact support for the mussel shell, thereby enhancing the positioning stability of the shell during the kneading process; because multiple rollers 34 that are spaced apart along the length direction and rotatably connected at both ends are provided at the bottom of the squeezing plate 33, the translational motion is transformed into a rolling kneading action, reducing the risk of shear damage to the mussel meat; because the ribs 32 and the rollers 34 are spatially opposite to each other and form a rolling contact cooperation relationship, a support-rolling cooperative mechanism is constructed, so that the kneading force is precisely applied to the meat-shell interface, improving the separation integrity and operational consistency.

[0034] This application also provides an energy-saving mussel meat-shell separation device. The rocker arm 44 includes a first vertical rod 441 and a second vertical rod 442. The first vertical rod 441 is located at the lower part of the rocker arm 44 and one end of the first connecting rod 23 is rotatably connected to the first vertical rod 441. The second vertical rod 442 is located at the upper part of the rocker arm 44 and one end of the second connecting rod 24 is rotatably connected to the second vertical rod 442. The radial dimension between the axis of the first vertical rod 441 and the rotation center of the rocker arm 44 is a first distance, and the radial dimension between the axis of the second vertical rod 442 and the rotation center of the rocker arm 44 is a second distance. The second distance is greater than the first distance, and the first distance is greater than 0.

[0035] The rocker arm 44 is a lever-type transmission component made of rigid material, used to convert the rotational motion driven by the motor 41 into the reciprocating translational motion of the support plate 31 and the extrusion plate 33. Its overall shape is Y-shaped, T-shaped or segmented bent structure, and the specific shape can be set according to the installation space and force requirements. This application embodiment does not make any special limitation on this. The first vertical rod 441 is a vertical support rod extending downward from the main body of the rocker arm 44. Its axis maintains a fixed first distance from the rotation center of the rocker arm 44. The first distance is set to 10 mm to 50 mm according to the actual transmission ratio requirements, for example, 20 mm, 30 mm or 40 mm.

[0036] The second vertical rod 442 is a vertical support rod extending upward from the main body of the rocker arm 44. Its axis maintains a fixed second distance from the rotation center of the rocker arm 44. This second distance is greater than the first distance, for example, 1.2 to 2.0 times the first distance, specifically set to 35 mm to 90 mm, for example, 60 mm or 75 mm. The first distance is greater than 0, ensuring that the first vertical rod 441 does not coincide with the rotation center, thereby ensuring that the first connecting rod 23 has an effective swing stroke. The second distance is greater than the first distance, so that under the same angular displacement, the linear displacement amplitude of the end of the second vertical rod 442 is greater than that of the end of the first vertical rod 441, thereby enabling the extrusion plate 33 driven by the second connecting rod 24 to obtain a larger horizontal stroke, while the stroke of the support plate 31 driven by the first connecting rod 23 is relatively small.

[0037] The first vertical rod 441 forms a revolute joint with the first connecting rod 23, converting the rotational motion of the lower part of the rocker arm 44 into the reciprocating translational motion of the support plate 31 along the slide groove direction; the second vertical rod 442 forms a revolute joint with the second connecting rod 24, converting the rotational motion of the upper part of the rocker arm 44 into the reciprocating translational motion of the extrusion plate 33 along the slide groove direction; the two are coaxially arranged on the same rocker arm 44 body, but are located at different radial positions of the rotation center, forming an asymmetrical drive layout; the first vertical rod 441 and the second vertical rod 442 are connected by an intermediate connecting section, which can be a straight rod section, an arc section, or a transition section with reinforcing ribs, and its structural form can be selected according to the strength and rigidity requirements, for example, it can be made of Q235 steel plate by bending and welding, or machined from aluminum alloy profiles; the axes of the first vertical rod 441 and the second vertical rod 442 are both perpendicular to the rotation plane of the rocker arm 44, and the two are arranged in parallel to ensure that the first connecting rod 23 and the second connecting rod 24 do not interfere with each other during the movement.

[0038] Specifically, when the motor 41 drives the rocker arm 44 to rotate around its bottom rotation center, the first vertical rod 441 makes a circular motion with its first distance as the radius, driving the first connecting rod 23 to push the pallet 31 to move back and forth along the slide groove in the first frame 21 with a small stroke; at the same time, the second vertical rod 442 makes a circular motion with the same angular velocity with its second distance as the radius, driving the second connecting rod 24 to push the squeezing and rubbing plate 33 to move back and forth along the slide groove in the second frame 22 with a large stroke; since the second distance is greater than the first distance, when the angular displacements of the two are the same, the linear displacement increment of the end of the second vertical rod 442 is always greater than that of the end of the first vertical rod 441, thereby creating a relative displacement difference between the squeezing and rubbing plate 33 and the pallet 31. This displacement difference forms a periodic kneading action when the roller 34 interacts with the rib 32.

[0039] As an optional embodiment, the specific implementation of the solution in this application is as follows: During operation, the motor 41 starts and drives the rocker arm 44 to rotate at a constant speed of 15 rpm to 30 rpm via the drive wheel 42 and belt 43; every time the rocker arm 44 completes a 360° rotation, the first vertical rod 441 drives the first connecting rod 23 to push the support plate 31 to complete a reciprocating motion of ±8 mm in the slide groove of the first frame 21, and the second vertical rod 442 simultaneously drives the second connecting rod 24 to push the extrusion plate 33 to complete a reciprocating motion of ±15 mm in the slide groove of the second frame 22.

[0040] At this time, a relative misalignment of 7 mm is formed between the roller 34 at the bottom of the squeezing and rubbing plate 33 and the rib 32 on the support plate 31. Under the action of this misalignment, the mussels placed between the support plate 31 and the squeezing and rubbing plate 33 are subjected to the combined mechanical action of the rolling and squeezing of the roller 34 and the scraping and shearing of the rib 32, so as to achieve efficient separation of meat and shell. Throughout the process, the small stroke of the support plate 31 maintains the stable support of the shell base, and the large stroke of the squeezing and rubbing plate 33 enhances the rubbing coverage and impact intensity. The two work together to improve the separation efficiency and energy utilization rate.

[0041] Through the above technical solution, this application achieves the following: because the rocker arm 44 is provided with a first vertical rod 441 and a second vertical rod 442, and the second distance between the axis of the second vertical rod 442 and the rotation center is greater than the first distance of the first vertical rod 441, the stroke of the squeezing and rubbing plate 33 driven by the second connecting rod 24 is greater than the stroke of the support plate 31 driven by the first connecting rod 23 when the rocker arm 44 rotates with the same angular displacement; because a controllable relative displacement difference is formed between the squeezing and rubbing plate 33 and the support plate 31, a periodic misaligned rubbing action is generated between the roller 34 and the rib 32; because this misaligned action is directly applied to the contact surface of the mussel individual, the peeling strength and separation integrity of the meat-shell interface are improved; and because the stroke differentiation configuration avoids ineffective large stroke drive and redundant energy consumption, it further reflects the energy-saving design intention.

[0042] Along the length of the extrusion plate 33, the outer diameter of the roller 34 located in the middle of the extrusion plate 33 is larger than the outer diameter of the rollers 34 located at both ends of the extrusion plate 33.

[0043] The squeezing plate 33 can refer to a plate-shaped moving component used to apply periodic rolling and squeezing action to the mussels placed on the tray 31 to achieve separation of the meat and shell. It moves back and forth in the horizontal direction under the linkage of the lifting and lowering of the second frame 22 driven by the cylinder 17 and the rocker arm 44. The squeezing plate 33 can be a metal plate, an engineering plastic plate or a composite material plate. Its thickness can be set according to the actual load-bearing requirements, for example, it can be selected in the range of 8 mm to 25 mm. This application embodiment does not make any special limitation in this regard. The length direction of the squeezing plate 33 is consistent with the mussel placement direction, that is, it is arranged along the long axis of the mussel shell. Its overall length can be adapted to the design of 120–200 mm according to the common mussel specifications (such as shell length 60–100 mm), and its width can be set to 80–150 mm according to the overall structural space of the device.

[0044] The bottom of the extrusion plate 33 is provided with multiple rollers 34, which are arranged at intervals along the length of the extrusion plate 33. The center distance between adjacent rollers 34 can be set according to the spacing of the ribs 32, for example, 30–60 mm. The extrusion plate 33 is slidably connected to the second frame 22 through a sliding groove. The sliding groove is set in the horizontal direction to ensure that the extrusion plate 33 maintains a stable posture without tilting or twisting during movement. In the working state, the extrusion plate 33 is set opposite to the ribs 32 on the support plate 31, and the two form an embedded fit relationship. The rollers 34 and the ribs 32 have overlapping projection areas in the vertical direction, so that the rollers 34 can roll along the surface of the ribs 32 and apply radial pressure as the extrusion plate 33 moves.

[0045] Roller 34 can refer to a cylindrical roller that is installed at the bottom of the extrusion plate 33 and can rotate freely around its own axis. It is used to convert the translational motion of the extrusion plate 33 into a rolling and kneading action on the surface of the mussel shell. The roller 34 can be a solid metal roller, a hollow aluminum alloy roller, or a rubber roller covered with an elastic layer. The outer surface can have a smooth, knurled, or micro-textured structure to enhance friction adaptability.

[0046] The two ends of the roller 34 are rotatably connected to the extrusion plate 33 via a rotating shaft. The rotating shaft can be installed by interference fit, snap ring limit or bearing support. The specific form can be selected according to the service life and maintenance requirements. The axis of the roller 34 is parallel to the width direction of the extrusion plate 33, and the axes of all rollers 34 are coplanar to ensure synchronous contact and uniform force.

[0047] Along the length of the extrusion plate 33, the outer diameter of the roller 34 located in the middle of the extrusion plate 33 is larger than that of the rollers 34 located at both ends of the extrusion plate 33. This structure forms a gradual diameter distribution along the length direction. The outer diameter of the middle roller 34 is Φ22 mm–Φ30 mm, and the outer diameter of the rollers 34 at both ends is Φ14 mm–Φ20 mm. The difference between the outer diameters of the middle and the rollers 34 is Φ4 mm–Φ10 mm. This difference is matched and set according to the typical ratio (1.3–1.6 times) of the thickness of the middle part of the mussel to the thickness of the edge. This gradual outer diameter distribution allows the middle roller 34 to contact the thickest central part of the mussel first during the pressing process of the extrusion plate 33 and apply greater local pressure, while the rollers 34 at both ends adapt to the thinner edge area of ​​the mussel shell, realizing a spatial gradient distribution of pressure.

[0048] The outer diameter of the roller 34 matches the spacing between adjacent ribs 32, and the outer diameter of the roller 34 is larger than the spacing between adjacent ribs 32, thereby ensuring that the roller 34 can effectively embed into the gap between the ribs 32 during rolling and apply sufficient squeezing and shearing action to the mussel adductor muscle connecting tissue; the gradual outer diameter structure of the roller 34 does not change the overall motion trajectory and driving logic of the squeezing plate 33, but only adjusts the contact depth and force at each position through geometric size differences.

[0049] Specifically, when the second frame 22 moves downward under the drive of the cylinder 17, causing the squeezing plate 33 to move closer to the support plate 31, the middle roller 34, with its larger outer diameter, contacts the surface of the support plate 31 first and, during the continued downward pressure, is the first to embed into the gap between adjacent ribs 32. At this time, the middle roller 34 applies concentrated and deep radial compression to the main body of the mussel (especially the adductor muscle attachment area), causing plastic deformation and local fracture of the connecting tissue between the shell and the flesh. Meanwhile, the rollers at both ends, with their smaller outer diameters, have a shallower contact depth under the same downward displacement, applying only moderate pressure to the edge area of ​​the mussel shell to avoid tearing of the flesh due to overload.

[0050] Subsequently, as the rocker arm 44 drives the squeezing plate 33 to reciprocate in the horizontal direction via the second link 24, each roller 34 rolls along the surface of the rib 32 in sequence. The middle roller 34, with its larger outer diameter, maintains a stronger embedding depth and kneading intensity, while the rollers at both ends maintain a gentle and adaptable movement. This creates a pressure gradient field along the length of the mussel, allowing the kneading action to transition naturally from strong to weak, thus improving the targeting and uniformity of the separation action.

[0051] As an optional embodiment, the specific implementation of this application is as follows: The cleaned mussels are laid flat on the surface of the tray 31, with the long axis of their shells aligned with the length of the tray 31; the cylinder 17 is activated, causing the second frame 22 to lower the squeezing and rubbing plate 33 to a preset height. At this point, the central roller 34 is embedded in the gap of the rib 32, while the two end rollers 34 have not yet fully contacted or have only slightly contacted the top of the rib 32; then the motor 41 is activated, driving the squeezing and rubbing plate 33 to reciprocate linearly in the horizontal direction via the drive wheel 42, belt 43, rocker arm 44, and second connecting rod 24; during the movement, the central roller 34 continuously rolls within the gap of the rib 32 and applies high-intensity rubbing, focusing on damaging the main connecting area of ​​the adductor muscle in the middle of the mussel; the two end rollers 34 roll on the top of the rib 32, assisting in loosening the shell edge area; the entire process requires no additional heating or chemical treatment, and the efficient and low-damage separation of the meat and shell is achieved solely through the mechanical cooperation between the gradually changing outer diameter roller 34 and the rib 32.

[0052] Through the above technical solution, this application achieves the following: Because the outer diameter of the middle roller 34 is larger than that of the two end rollers 34 in the length direction of the squeezing plate 33, the middle roller 34 preferentially contacts and deeply embeds into the gap of the rib 32 during the squeezing plate 33 pressing down, applying greater kneading pressure to the thickest central area of ​​the mussel, thereby more effectively breaking the main connecting tissue of the adductor muscle; at the same time, because the outer diameter of the two end rollers 34 is smaller, the contact depth is shallower under the same pressing stroke, thus avoiding tearing of the flesh in the edge area due to excessive pressure; thus, through the spatial differential design of the outer diameter of the rollers 34, a gradient distribution of kneading force along the length direction of the mussel is achieved, improving the thoroughness of flesh-shell separation and the integrity of the flesh.

[0053] The length of the groove in the first frame 21 is greater than the length of the pallet 31. The groove serves as a guide rail for the pallet 31, and its total length extending horizontally is greater than the maximum outline dimension of the pallet 31 in the direction of movement. This dimensional relationship ensures that when the pallet 31 moves back and forth along the groove under the drive of the first link 23, both ends of the pallet 31 are always within the effective constraint range of the groove, thus avoiding the pallet 31 from leaving the groove or rigidly colliding with the end of the groove due to the travel limit.

[0054] The dimensional difference can be set according to the actual assembly tolerance, the range of change of the linkage transmission angle and the magnitude of the motion inertia, for example, it can be 5 mm to 20 mm, or 3 mm or 25 mm. This application embodiment does not make any special limitation on this. The dimensional relationship, together with the rotation angle of the rocker arm 44, the length of the first linkage 23 and the connection position, determines the actual stroke of the pallet 31. Its function is to provide redundant guide space for the pallet 31 so that the pallet 31 can still stably complete the horizontal reciprocating motion when the cylinder 17 is not in motion or when the second frame 22 is at different height positions.

[0055] The length of the groove inside the second frame 22 is greater than the length of the extrusion plate 33. The groove serves as a guide track for the extrusion plate 33, and its total length extending horizontally is greater than the maximum outline dimension of the extrusion plate 33 in the direction of movement. This dimensional relationship ensures that when the extrusion plate 33 moves back and forth along the groove under the drive of the second connecting rod 24, its two ends are always effectively limited by the side wall of the groove, preventing the extrusion plate 33 from deflecting, lifting, or partially dislodging during high-frequency reciprocating motion.

[0056] The dimensional difference can be set according to the arrangement density of the rollers 34, the protrusion height of the ribs 32, and the alignment tolerance required for their meshing. For example, it can be 6 mm to 22 mm, or 4 mm or 30 mm. This embodiment does not impose any special limitation on this. The dimensional relationship works in conjunction with the swing amplitude of the second connecting rod 24 and the radial installation position of the second vertical rod 442 to ensure that the extrusion plate 33 can maintain a stable relative motion trajectory with the support plate 31 under different height conditions. Its function is to maintain the dynamic alignment relationship between the extrusion plate 33 and the support plate 31, so that the rollers 34 and the ribs 32 continuously form a controllable extrusion-rubbing engagement state throughout the entire stroke.

[0057] Specifically, the length of the groove and the length of the corresponding plate (support plate 31 or extrusion plate 33) maintain a positive difference, so that when the rocker arm 44 is at its limit rotation angle, the first link 23 can still drive the support plate 31 to a position near but not in contact with the end of the groove, and the second link 24 can also drive the extrusion plate 33 to a position near but not in contact with the end of the groove. At this time, the support plate 31 and the extrusion plate 33 still retain structural interference margin in the horizontal direction, avoiding movement jamming caused by manufacturing errors, installation deviations or long-term wear. At the same time, this dimensional relationship allows the extrusion plate 33 to complete the entire movement within its own groove when the groove reference plane of the extrusion plate 33 is slightly parallel offset relative to the groove reference plane of the support plate 31 during the lifting and lowering process of the second frame 22 driven by the cylinder 17, without relying on the absolute coplanarity accuracy of the two sets of grooves.

[0058] As an optional embodiment, the specific implementation of the solution in this application is as follows: In the initial assembly stage of the equipment, based on the rated speed of the motor 41, the designed rotation angle of the rocker arm 44 (e.g., ±15°), and the length ratio of the first connecting rod 23 to the second connecting rod 24 (e.g., 1:1.3), the theoretical maximum stroke of the pallet 31 is calculated to be 82 mm, and the theoretical maximum stroke of the extrusion plate 33 is 106 mm; accordingly, the length of the slide groove in the first frame 21 is set to 100 mm, and the length of the slide groove in the second frame 22 is set to 125 mm.

[0059] The length of the support plate 31 is 75 mm, and the length of the squeezing and rubbing plate 33 is 98 mm. In actual operation, when the rocker arm 44 rotates 15° counterclockwise from the initial horizontal position, the support plate 31 is driven to move to the right to a distance of 7 mm from the right end of the chute, and the squeezing and rubbing plate 33 is driven to move to the left to a distance of 9 mm from the left end of the chute. The same applies when rotating in the opposite direction. There is no contact, no abnormal noise, and no deviation throughout the process. The roller 34 and the rib 32 always maintain an engaged state, realizing the continuous and stable separation of the mussel meat and shell.

[0060] Through the above technical solution, this application achieves the following: Since the length of the groove in the first frame 21 is greater than the length of the pallet 31, the reciprocating motion of the pallet 31 driven by the first connecting rod 23 has a stroke buffer space, avoiding motion restriction caused by dead points of the connecting rod mechanism or assembly errors; Since the length of the groove in the second frame 22 is greater than the length of the extrusion plate 33, the reciprocating motion of the extrusion plate 33 driven by the second connecting rod 24 has structural fault tolerance, ensuring the continuous meshing of the roller 34 and the rib 32 under different height working conditions; The two work together to ensure that the whole machine can maintain the integrity and stability of the mechanical motion chain under the dual action coupling of the cylinder 17 adjusting the height and the motor 41 driving the horizontal movement.

[0061] The outer diameter of the roller 34 is larger than the spacing between adjacent ribs 32. The outer diameter of the roller 34 can refer to the maximum cross-sectional diameter of the roller 34 in the direction perpendicular to its axis. This dimension is used to characterize whether the roller 34 can achieve interference fit contact during relative movement with the ribs 32. The spacing between adjacent ribs 32 can refer to the horizontal distance between the nearest edges of two adjacent ribs 32 arranged along the length direction on the same pallet 31. This distance determines the space width between the ribs 32 that the roller 34 can pass through.

[0062] The outer diameter of the roller 34 is larger than the spacing between the adjacent ribs 32, indicating that during the process of the squeezing and rubbing plate 33 descending and closing with the support plate 31, the roller 34 needs to pass through the gap between the ribs 32 by elastic deformation or by forcing the mussel tissue to deform. This allows the roller 34 to apply continuous and stable radial compression and circumferential kneading action to the mussel meat within the narrow slit area formed by the roller 34 and the ribs 32. This dimensional relationship ensures that the roller 34 always forms mechanical interference with the areas on both sides of the ribs 32 during the movement, avoiding the dispersion of kneading force or local pressure loss due to excessive gaps, and ensuring that the kneading action covers the entire effective working surface of the support plate 31.

[0063] The outer diameter of the roller 34 can be set according to the actual specifications of the mussels being processed, the hardness of the shells, and the toughness of the meat. For example, it can be 8mm, 10mm, or 12mm. The spacing between adjacent ribs 32 can be set according to the overall size of the tray 31, the number of ribs 32, and the arrangement density. For example, it can be 6mm, 7mm, or 9mm. Provided that the outer diameter of the roller 34 is greater than the spacing between adjacent ribs 32, the difference between the two can be 0.5mm, 1.0mm, or 1.5mm.

[0064] The dimensional fit between the roller 34 and the adjacent rib 32, together with the extrusion plate 33 and the support plate 31 connected thereto, constitute a dynamic kneading unit: when the extrusion plate 33 moves down along the slide groove of the second frame 22 under the drive of the second connecting rod 24, the roller 34 first contacts the top edge of the rib 32 and continues to press in the normal direction as it moves down; since the outer diameter of the roller 34 is larger than the gap, it must cross the side wall of the rib 32 and press the mussel tissue between them, so that the mussel meat is repeatedly sheared, stretched and squeezed between the edge of the rib 32 and the curved surface of the roller 34; this process does not rely on additional power input, and can be achieved by the mechanical reciprocating motion driven by the rocker arm 44, which meets the energy-saving design goal.

[0065] Specifically, this dimensional relationship constrains the spatial matching state between the roller 34 and the rib 32, transforming the squeezing and rubbing action from surface contact sliding to line-surface composite embedded kneading, thereby increasing the effective number of actions per unit stroke while maintaining structural simplicity. As the roller 34 passes through the gap of a single set of ribs 32, its surface forms a composite motion trajectory of continuous rolling and local indentation with the mussel meat, significantly enhancing the ability to peel off the muscle fibers attached to the inner wall of the shell.

[0066] The specific implementation of the scheme in this application is as follows: the mussels to be processed are evenly laid on the surface of the tray 31, the motor 41 is started, and the rocker arm 44 is driven by the drive wheel 42 and the belt 43 to swing back and forth around the bottom rotation center; the upper part of the rocker arm 44 pushes the squeezing plate 33 to move downward along the slide groove of the second frame 22 through the second connecting rod 24, while the lower part pulls the tray 31 to move forward slightly along the slide groove of the first frame 21 through the first connecting rod 23.

[0067] When the squeezing and rubbing plate 33 descends to its lowest position, each roller 34 aligns with the gap between adjacent ribs 32. Because the outer diameter of the roller 34 is larger than the gap, the edge of the roller 34 is forcibly embedded into the groove area formed by the ribs 32, applying vertical compressive stress and horizontal shear stress to the mussel meat held therein. Then the rocker arm 44 swings in the opposite direction, the squeezing and rubbing plate 33 moves upward to reset, and the roller 34 disengages from the gap between the ribs 32, completing one rubbing cycle. The above process is repeated until the mussel meat is fully separated from the shell and falls into the receiving box 14 below.

[0068] Through the above technical solution, this application achieves the following: Since the outer diameter of the roller 34 is larger than the spacing between adjacent ribs 32, the roller 34 can be forcibly embedded into the gap between the ribs 32 during the downward closing process of the squeezing plate 33, forming an interference contact, thereby avoiding blind spots in the kneading process; Since this dimensional relationship works synergistically with the structure of the central roller 34 having a larger outer diameter in this application, the kneading pressure in the central area is higher and the action is deeper, further enhancing the peeling effect on strongly attached tissues such as the mussel adductor muscle; Since this dimensional relationship is achieved only through geometric parameter constraints, there is no need to add sensors, controllers or additional actuators, thus maintaining the simplicity of the overall structure and low energy consumption while ensuring the separation effect.

[0069] The chute is set horizontally, and both the support plate 31 and the extrusion plate 33 are set horizontally. The roller 34 and the rib 32 are set opposite each other. The chute being set horizontally can mean that the chute provided inside the first frame 21 and the second frame 22 extends parallel to the horizontal reference plane, and is used to provide a horizontal guide path for the support plate 31 and the extrusion plate 33. The chute can be a T-shaped chute, a dovetail chute, or a rectangular through chute, with the chute openings facing each other. Its cross-sectional dimensions are adapted to the sliding parts of the support plate 31 and the extrusion plate 33 to ensure smooth sliding and guiding accuracy.

[0070] The length direction of the chute is consistent with the length direction of the support plate 31 and the extrusion plate 33, and its length dimension is greater than the length dimension of the support plate 31 and the extrusion plate 33, thus reserving sufficient travel space for their reciprocating motion in the horizontal direction. The chute setting method constrains the movement trajectory of the support plate 31 and the extrusion plate 33 to the same horizontal plane, avoiding uneven loading, jamming or local stress concentration caused by tilting, which is conducive to improving the accuracy of motion repeatability and positioning and structural durability.

[0071] Both the tray 31 and the squeezing plate 33 are arranged horizontally. This means that the overall installation posture of the tray 31 is such that its bearing surface is parallel to the horizontal reference plane, and the overall installation posture of the squeezing plate 33 is such that the plane containing the axis of the bottom roller 34 is parallel to the horizontal reference plane. The upper surface of the tray 31 is used to support the mussels to be separated, and its horizontal arrangement ensures that the mussels do not roll or slip and become unstable during movement.

[0072] The horizontal arrangement of the extrusion plate 33 ensures that the rotation axes of each roller 34 are parallel to each other and perpendicular to the direction of movement, thus ensuring that the meshing contact force between the roller 34 and the rib 32 is evenly distributed in the vertical direction. The horizontal posture of the support plate 31 and the extrusion plate 33 is achieved through their cooperation with the corresponding slide groove, and is maintained by the rigid frame structure of the first frame 21 and the second frame 22. This horizontal arrangement does not rely on an additional leveling mechanism and can be finely adjusted by adjusting the machining tolerance of the bottom surface of the slide groove or by adding shims according to actual assembly requirements. This application embodiment does not impose any special limitations on this.

[0073] The rollers 34 and the ribs 32 are arranged opposite each other. This means that each roller 34 at the bottom of the extrusion plate 33 is directly opposite the gap area between adjacent ribs 32 on the support plate 31 in the vertical projection direction. That is, the projection of the central axis of each roller 34 on the horizontal plane falls within the gap area enclosed by the center lines of two adjacent ribs 32. This relative arrangement allows the rollers 34 to be inserted into the gap of the ribs 32 one after another and roll and rub along its length direction when the extrusion plate 33 moves horizontally back and forth, forming a continuous action mechanism of rolling-insertion-release.

[0074] The outer diameter of the roller 34 is larger than the spacing between adjacent ribs 32, ensuring that the roller 34 generates a moderate interference squeeze when entering the gap, thereby enhancing the mechanical disturbance strength on the mussel shell. The relative position of the roller 34 and the rib 32 is jointly guaranteed by the coaxial installation accuracy of the second frame 22 and the first frame 21, the consistency of the slide groove processing, and the synchronous displacement relationship between the two under the drive of the rocker arm 44. This relative setting is not limited to complete center alignment and is allowed to float within ±2 mm, as long as the edge of the roller 34 can cover the gap of the rib 32 and does not rigidly interfere with the body of the rib 32. This application embodiment does not impose any special limitations on this.

[0075] Specifically, when the cylinder 17 drives the second frame 22 to rise and fall to the working position, the motor 41 starts and drives the rocker arm 44 to rotate. The first connecting rod 23 and the second connecting rod 24 respectively drive the support plate 31 and the extrusion plate 33 to perform synchronous reciprocating motion in opposite directions in their respective horizontal slides. Since the slides are set in the horizontal direction, the support plate 31 and the extrusion plate 33 always maintain a horizontal posture, and their motion trajectories are coplanar and parallel.

[0076] Under this premise, the roller 34 at the bottom of the squeezing and rubbing plate 33 is always aligned with the gap between the ribs 32 on the support plate 31. When the squeezing and rubbing plate 33 moves forward, the roller 34 is inserted into the gap and applies periodic rolling pressure to the mussel shell. When it moves backward, it causes the shell to lift slightly and releases stress. Combined with the reverse movement of the support plate 31, it forms a shearing-rubbing composite mechanical action. Throughout the process, the spatial relative relationship between the roller 34 and the ribs 32 is maintained stably, without any misalignment, scraping or detachment, ensuring the continuity and effectiveness of the rubbing action.

[0077] The cleaned mussels are evenly laid on the upper surface of the tray 31. The cylinder 17 is activated to lower the second frame 22 to a predetermined height, so that a preset gap (e.g., 3-5 mm) is formed between the bottom roller 34 of the squeezing and rubbing plate 33 and the rib 32 of the tray 31. (mm); then the motor 41 is started, and the drive wheel 42 drives the rocker arm 44 to swing back and forth at a constant angular velocity via the belt 43. The rocker arm 44 pushes the tray 31 to move horizontally back and forth along the slide groove of the first frame 21 via the first connecting rod 23. At the same time, it pulls the squeezing and rubbing plate 33 to move horizontally back and forth along the slide groove of the second frame 22 via the second connecting rod 24. In a single reciprocating cycle, the roller 34 with the larger outer diameter in the middle first contacts and embeds into the gap of the rib 32, applying concentrated rolling pressure to the mussel shell. The rollers 34 with smaller outer diameters at both ends participate in the kneading in subsequent strokes. Since all kinematic pairs are designed based on the horizontal reference plane, the axis of the roller 34 and the direction of the rib 32 are always orthogonal and coincident in projection, thereby achieving uniform and thorough kneading and peeling of the circumferential shell of the mussel. The separated meat falls into the receiving box 14 below.

[0078] Through the above technical solutions, this application achieves the following: because the chute is set in the horizontal direction, the movement of the support plate 31 and the squeezing plate 33 is strictly constrained within the same horizontal plane, avoiding instability and local wear caused by tilting; because both the support plate 31 and the squeezing plate 33 are set in a horizontal manner, the mussels maintain a stable posture during the support and squeezing process, preventing slippage or overturning that would cause insufficient separation; because the roller 34 and the rib 32 are set opposite to each other, and the outer diameter of the roller 34 is larger than the distance between adjacent ribs 32, the roller 34 can be stably embedded in the gap and apply effective squeezing force, causing the mussel shell to undergo micro-cracks and loosening under periodic mechanical disturbance, ultimately achieving efficient separation of meat and shell.

[0079] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An energy-saving mussel meat-shell separation device, characterized in that, It includes: Base plate, base, support column, receiving box, first frame, second frame, support plate, extrusion plate, compression spring, guide rod, cylinder, motor, drive wheel, belt, rocker arm, first connecting rod, second connecting rod; The base feet are located at the four corners of the base plate, the support columns are fixedly installed on the base plate and the four support columns are arranged in parallel, the first frame is fixedly installed on the top of the support columns, the receiving box is supported on the base plate and located below the first frame, the compression springs are respectively installed at the four corners of the first frame, and the second frame is fixedly installed on the top of the compression springs. The cylinder is fixedly mounted on the first frame, the output end of the cylinder is connected to the second frame, the guide rod is fixedly mounted on the first frame and is positioned opposite to the cylinder, the second frame is provided with a guide hole, the guide rod cooperates with the guide hole, and the extension and retraction of the output end of the cylinder drives the second frame to move up and down along the length direction of the guide rod; The motor is fixedly mounted on the base plate. The output end of the motor is connected to the drive wheel, the drive wheel is connected to the belt, and the belt is connected to the rocker arm. The motor drives the drive wheel to rotate and drives the rocker arm to rotate under the transmission of the belt. The bottom of the rocker arm is rotatably connected to the base plate, and the top of the rocker arm is rotatably connected to the support frame set on the upper part of the second frame. The first frame and the second frame have inner sliding grooves. The pallet is slidably connected to the sliding groove of the first frame, and the squeezing and rubbing plate is slidably connected to the sliding groove of the second frame. One end of the first connecting rod is rotatably connected to the lower part of the rocker arm, and the other end of the first connecting rod is rotatably connected to the bottom of the pallet. One end of the second connecting rod is rotatably connected to the upper part of the rocker arm, and the other end of the second connecting rod is rotatably connected to the top of the squeezing and rubbing plate. Under the rotational movement of the rocker arm, the pallet and the squeezing and rubbing plate are driven to move within the first frame and the second frame respectively through the first connecting rod and the second connecting rod.

2. The energy-saving mussel meat-shell separation device according to claim 1, characterized in that, The pallet is provided with raised ribs, and multiple raised ribs are spaced apart along the length of the pallet. The raised ribs protrude in the direction toward the second frame. The bottom of the extrusion plate is provided with rollers, and multiple rollers are spaced apart along the length of the extrusion plate. The two ends of the rollers are rotatably connected to the extrusion plate.

3. The energy-saving mussel meat-shell separation device according to claim 1, characterized in that, The rocker arm includes a first vertical rod and a second vertical rod. The first vertical rod is located at the lower part of the rocker arm and one end of the first connecting rod is rotatably connected to the first vertical rod. The second vertical rod is located at the upper part of the rocker arm and one end of the second connecting rod is rotatably connected to the second vertical rod. The radial dimension between the axis of the first vertical rod and the rotation center of the rocker arm is a first distance, and the radial dimension between the axis of the second vertical rod and the rotation center of the rocker arm is a second distance. The second distance is greater than the first distance, and the first distance is greater than 0.

4. The energy-saving mussel meat-shell separation device according to claim 2, characterized in that, Along the length of the extrusion plate, the outer diameter of the roller located in the middle of the extrusion plate is larger than the outer diameter of the rollers located at both ends of the extrusion plate.

5. The energy-saving mussel meat-shell separation device according to claim 1, characterized in that, The length of the groove in the first frame is greater than the length of the tray, and the length of the groove in the second frame is greater than the length of the extrusion plate.

6. The energy-saving mussel meat-shell separation device according to claim 4, characterized in that, The outer diameter of the roller is greater than the spacing between adjacent ribs.

7. The energy-saving mussel meat-shell separation device according to claim 4, characterized in that, The chute is arranged horizontally, the support plate and the extrusion plate are both arranged horizontally, and the roller and the rib are arranged opposite each other.

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