Efficient cleaning equipment and cleaning method for grading and protecting shells of mussels

Abstract

The invention relates to the technical field of mussel cleaning, in particular to efficient cleaning equipment and a cleaning method for grading and shell protection of mussels. Comprising a machine frame, a cleaning pool and a conveying belt are arranged on the machine frame, the conveying belt is provided with a horizontal conveying section submerged below the liquid level of the cleaning pool and a climbing section penetrating out of the liquid level in an upward inclined mode, a grading mechanism is arranged on the front half portion of the horizontal conveying section and comprises a vibration material frame and a net bag arranged in the vibration material frame, and a height adjusting frame is arranged on the machine frame. A vibration generator is arranged on the height adjusting frame, the net bag is composed of a fixed net and a movable net, an inner frame is arranged in the vibration material frame and can drive the movable net to be close to or away from the fixed net, and a material falling net gap is formed between the fixed net and the movable net. By adjusting the blanking net gap between the movable net and the fixed net, stage-by-stage release of mussels is achieved, extrusion damage is avoided, then dirt in the mussels is removed under the cleaning action of pre-cleaning, aeration turning and washing and variable-frequency spraying, and the cleaning effect is improved.

Description

Technical Field

[0001] This invention relates to the field of mussel cleaning technology, specifically to a high-efficiency cleaning device and method for grading and protecting mussels. Background Technology

[0002] In mussel processing, existing cleaning equipment mostly uses fixed mesh vibrating screens or drum structures, which cannot effectively classify mussels according to size. Mixing mussels of different sizes during washing leads to smaller mussels being easily crushed by larger mussels, resulting in a low yield. The lack of differentiated rinsing intensity for different sizes of mussels often results in small mussels being broken and larger mussels not being properly cleaned, further reducing cleaning efficiency.

[0003] A currently disclosed Chinese patent, CN221829939U, describes an automatic cleaning device for reducing mussel breakage. The device includes a cleaning box, a cleaning mechanism, a spraying mechanism, and a transport mechanism. The cleaning mechanism is located inside the cleaning box, and the spraying mechanism is positioned above it. The transport mechanism is positioned below the cleaning mechanism. The cleaning mechanism includes a power unit and cleaning rollers. The power unit drives the cleaning rollers to rotate. Several cleaning rollers are arranged inside the cleaning box, and adjacent cleaning rollers rotate in opposite directions. Several cleaning brush assemblies are arranged in a ring on each cleaning roller, and these brush assemblies are retractable.

[0004] According to the aforementioned patent, it achieves non-destructive cleaning of mussels of different sizes through an adjustable flexible cleaning brush and a reverse-rotating cleaning roller. However, although non-destructive cleaning is achieved through the retractable brush and reverse roller, the lack of size grading function means that subsequent mixing of mussels of different sizes can still easily lead to crushing and damage, affecting the cleaning effect.

[0005] Therefore, there is a need for a high-efficiency cleaning device that can automatically sort mussels by size and then match the cleaning intensity to different sizes to protect the shells, avoiding squeezing and damage caused by washing mussels of different sizes together, and achieving automated cleaning with graded shell protection, high efficiency, low loss and high output. Summary of the Invention

[0006] To address the problems existing in the prior art, a high-efficiency cleaning device for grading and protecting mussels is provided. By adjusting the gap between the moving and fixed nets, mussels are released in stages to avoid crushing and damage. Subsequently, the dirt inside the mussels is removed through pre-cleaning, aeration and turning, and variable frequency spraying, thus improving the cleaning effect.

[0007] To address the problems of existing technologies, this invention provides a high-efficiency cleaning and grading device for mussels, comprising a frame, a cleaning tank, and a conveyor belt. The conveyor belt has a horizontal conveying section submerged below the liquid surface in the cleaning tank and an upward-sloping climbing section extending out of the liquid surface. The front half of the horizontal conveying section is equipped with a grading mechanism for releasing mussels from small to large into the cleaning tank in stages. The grading mechanism is located above the horizontal conveying section and includes a vibrating material frame and a net bag disposed therein. The frame is equipped with a height adjustment mechanism for mounting the vibrating material frame. The frame and the four corners of the vibrating material frame are equipped with vibration springs between them and the height adjustment frame. The height adjustment frame is equipped with a vibration generator to drive the vibrating material frame to reciprocate. The mesh bag consists of a fixed mesh and a moving mesh. The fixed mesh is fixedly set at the bottom of the vibrating material frame. There is an inner frame inside the vibrating material frame. The moving mesh is fixedly set on the inner frame. The inner frame can drive the moving mesh to move closer to or away from the fixed mesh. A material drop mesh gap is formed between the fixed mesh and the moving mesh. As the moving mesh gradually moves upward away from the fixed mesh, the material drop mesh gap gradually increases, forming a continuously adjustable grading channel from small to large.

[0008] Preferably, the fixed mesh is composed of several first mesh lines that are equally spaced along the edge of the vibrating material frame, and the moving mesh is composed of several second mesh lines that are equally spaced along the edge of the inner frame. The first and second mesh lines are parallel and staggered to form several uniformly open material drop mesh gaps.

[0009] Preferably, an elastic protective strip is provided between the inner frame and the vibrating material frame to close the gap generated when the two move relative to each other. The elastic protective strip is arranged around the inner frame and fixedly connected between the inner frame and the vibrating material frame.

[0010] Preferably, a set of pre-cleaning pipes for preliminary rinsing of mussels during the grading process is provided around the vibrating feed frame, and the pre-cleaning pipes are inclined toward the inside of the vibrating feed frame.

[0011] Preferably, guide rods extend vertically downward from all four corners of the inner frame, and a step is provided at the bottom of the vibrating material frame to support the inner frame. A guide opening is provided on the step for the guide rods to pass through, and a linear actuator is provided on the vibrating material frame to drive the inner frame to move up and down.

[0012] Preferably, the linear actuator includes pull ropes disposed at the four corners of the inner frame and an electric reel connected to the upper end of the pull ropes, and a compression spring for assisting the inner frame to return to its downward position is fixedly connected between each guide rod and the step.

[0013] Preferably, the rear half of the horizontal conveying section is equipped with an aeration pipe for stirring up the water flow, and the front half of the climbing section is equipped with a flushing nozzle for controlling the water flow intensity according to the size of the mussels.

[0014] Preferably, the frame is equipped with a visual sensor for identifying the size of mussels, which works in conjunction with the rinsing nozzle.

[0015] Preferably, the conveyor belt surface is provided with a number of push plates at equal intervals along its length to prevent mussels from remaining in the washing pool.

[0016] This invention also provides a highly efficient cleaning method for mussel grading and shell protection, comprising the following steps:

[0017] S1. Start the vibrating material frame, adjust the gap between the moving net and the stationary net to the minimum, and put in the mixed mussels;

[0018] S2. Gradually increase the mesh size of the feed net so that the mussels fall into the washing pool in order from small to large and move forward with the conveyor belt;

[0019] S3. After being aerated and turned over, the mussels enter the climbing section. The visual sensor identifies the size, and the control system adjusts the water pressure of the rinsing nozzles to perform graded rinsing and complete the shell cleaning.

[0020] The advantages of this application compared to the prior art are:

[0021] 1. This invention achieves continuously adjustable mesh spacing for material feeding through the relative movement of the moving and stationary meshes. Combined with the vibration of the vibrating material frame, mussels are released in stages according to size, from smallest to largest, completely solving the problem of crushing and damage caused by mixing different sizes during washing. The parallel and intersecting first and second mesh lines ensure uniform mesh spacing expansion, making the grading process stable and reliable.

[0022] During this process, the elastic protective belt dynamically seals the gap between the inner frame and the vibrating material frame, effectively preventing mussels from getting stuck. Simultaneously, during the grading process, the pre-cleaning pipe sprays water to remove mud and sand from the mussels' surface in advance, improving overall cleaning efficiency.

[0023] 2. This invention utilizes air bubbles to create underwater turbulence through an aeration pipe, causing mussels to tumble and effectively removing surface mud and sand for initial cleaning. Subsequently, in the ascending section, a visual sensor is used to identify the size of the mussels online and adjust the water pressure of the rinsing nozzles in real time, achieving differentiated rinsing by using low pressure to protect the shells of small mussels and high pressure for strong washing of large mussels.

[0024] The combined operation of aeration and loosening of dirt with visually guided precision spraying forms an efficient cleaning process that ensures thorough cleaning while maximizing the protection of the mussel shells' integrity, thus improving cleaning quality and automation levels.

[0025] 3. This invention effectively overcomes the problem of mussels becoming stuck and accumulating in the washing pool due to buoyancy by using push plates on the surface of the conveyor belt. The push plates continuously move forward as the conveyor belt runs, forcibly driving floating or poorly sliding mussels to move at a uniform speed, preventing them from spinning in place in the horizontal conveying section.

[0026] Several push plates create a continuous pushing effect, ensuring that mussels of all sizes can be transported to the climbing section in an orderly and stable manner, guaranteeing the continuity and rhythm consistency of the cleaning process, and improving the automation level and overall cleaning efficiency of the equipment. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of an efficient cleaning device for grading and protecting mussels according to the present invention.

[0028] Figure 2 This is a partial plan sectional view of an efficient cleaning device for grading and protecting mussels according to the present invention.

[0029] Figure 3 This is a partial three-dimensional structural cross-sectional view of an efficient cleaning device for grading and protecting mussels according to the present invention.

[0030] Figure 4 This is a three-dimensional structural diagram of the grading mechanism of an efficient cleaning and grading device for mussels, with the top surface facing outwards.

[0031] Figure 5 This is a three-dimensional structural diagram of the grading mechanism of an efficient cleaning and grading device for mussels, with the bottom surface facing outwards, according to the present invention.

[0032] Figure 6 This is a planar sectional view of a grading mechanism for a high-efficiency cleaning and grading device for mussels, according to the present invention.

[0033] Figure 7 This is a three-dimensional structural cross-sectional view of the top surface of a grading mechanism for a high-efficiency cleaning and grading device for mussels, according to the present invention.

[0034] Figure 8 This is a three-dimensional structural cross-sectional view of the bottom surface of a grading mechanism for a high-efficiency cleaning and grading device for mussels, according to the present invention.

[0035] Figure 9 This is the invention Figure 6 Enlarged diagram of point A.

[0036] Figure 10 This is the invention Figure 6 Enlarged diagram of point B.

[0037] The diagram is labeled as follows: 1. Frame; 2. Cleaning tank; 3. Conveyor belt; 31. Horizontal conveying section; 311. Aeration pipe; 32. Climbing section; 321. Flushing nozzle; 33. Push plate; 4. Grading mechanism; 41. Vibrating material frame; 411. Pre-cleaning pipe; 412. Step; 42. Net bag; 421. Fixed net; 4211. First net line; 422. Moving net; 4221. Second net line; 423. Drop net gap; 5. Height adjustment frame; 51. Vibration spring; 52. Vibration generator; 6. Inner frame; 61. Elastic protective belt; 62. Guide rod; 621. Compression spring; 63. Pull rope. Detailed Implementation

[0038] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0039] See Figures 1-5 As shown, a high-efficiency cleaning and grading device for mussels includes a frame 1, a cleaning tank 2 and a conveyor belt 3 on the frame 1. The conveyor belt 3 has a horizontal conveying section 31 that is submerged below the liquid surface in the cleaning tank 2 and an upward-sloping climbing section 32 that extends out of the liquid surface. The front half of the horizontal conveying section 31 is equipped with a grading mechanism 4 for releasing mussels from small to large into the cleaning tank 2 in stages. The grading mechanism 4 is located above the horizontal conveying section 31 and includes a vibrating material frame 41 and a net bag 42 disposed therein. A height adjustment frame 5 is provided on the frame 1 for mounting the vibrating material frame 41. The four corners of the vibrating material frame 41 are connected to the height adjustment frame. Vibration springs 51 are provided between each of the 5. A vibration generator 52 is provided on the height adjustment frame 5 to drive the vibrating material frame 41 to reciprocate. The net bag 42 is composed of a fixed net 421 and a moving net 422. The fixed net 421 is fixedly set at the bottom of the vibrating material frame 41. An inner frame 6 is provided inside the vibrating material frame 41. The moving net 422 is fixedly set on the inner frame 6. The inner frame 6 can drive the moving net 422 to move closer to or away from the fixed net 421. A material drop gap 423 is formed between the fixed net 421 and the moving net 422. When the moving net 422 gradually moves upward away from the fixed net 421, the material drop gap 423 gradually increases, forming a continuously adjustable grading channel from small to large.

[0040] At the start of the mussel cleaning operation, mussels of different sizes are fed into a vibrating material frame 41 located above the horizontal conveyor section 31 of the conveyor belt 3, at which point the grading process officially begins. Initially, the control system sets the moving net 422 to its lowest position to ensure that mussels of all sizes are temporarily contained in the vibrating material frame 41, preventing ungraded material from falling prematurely.

[0041] Subsequently, the vibration generator 52 is activated, causing the entire vibrating material frame 41 to generate high-frequency reciprocating vibration on the height adjustment frame 5. This vibration is transmitted and buffered by the vibration springs 51 set at the four corners, causing the mussels in the vibrating material frame 41 to continuously jump, roll, and separate from each other under the action of vibration, effectively breaking them up and providing a uniform and loose material base for subsequent grading. While the vibration continues, the control system starts to lift the inner frame 6. Since the moving net 422 is fixed on the inner frame 6, it rises synchronously, causing the vertical distance between the moving net 422 and the fixed net 421 fixed at the bottom of the vibrating material frame 41 to gradually increase, so that the smaller mussels fall into the washing tank 2 first, followed by the larger mussels.

[0042] When the feed mesh 423 only allows the smallest mussels to pass through, under the combined effects of gravity and continuous vibration, these small mussels are the first to pass through the feed mesh 423 and fall into the horizontal conveyor section 31 of the washing pool 2 below, and are carried away by the conveyor belt 3 into the subsequent washing process. Medium and large mussels, because their size is larger than the current feed mesh 423, are still trapped in the vibrating feed frame 41 and continue to be vibrated and loosened.

[0043] As the inner frame 6 rises, the mesh opening 423 continues to widen. When it reaches a size large enough for medium-sized mussels to pass through, the batch of mussels begins to fall in an orderly fashion. Finally, when the mesh opening 423 expands to its maximum set value, all the remaining large mussels are released. The entire process achieves dynamic grading, releasing mussels from small to large, completely avoiding crushing and breakage caused by mixing different sizes. After one batch is graded, the moving mesh 422 resets, ready for the next cycle.

[0044] See Figures 4-9 As shown, the fixed mesh 421 is composed of several first mesh lines 4211 that are equally spaced along the edge of the vibrating material frame 41, and the moving mesh 422 is composed of several second mesh lines 4221 that are equally spaced along the edge of the inner frame 6. The first mesh lines 4211 and the second mesh lines 4221 are parallel and staggered to form several uniformly open material drop mesh gaps 423.

[0045] Initially, the moving net 422 is positioned close to the fixed net 421, with each second net line 4221 precisely aligned with the gap between two adjacent first net lines 4211. This results in multiple rectangular drop net gaps 423 of uniform size and opening between the first net lines 4211 and the adjacent second net lines 4221 on both sides. At this point, the drop net gaps 423 are at their minimum, and the mussels are completely trapped.

[0046] When graded release is required, the inner frame 6 drives the moving mesh 422 to rise, and the second mesh line 4221 moves upward as a whole. Since the position of the first mesh line 4211 is fixed, as the moving mesh 422 rises, the lateral distance between each second mesh line 4221 and the first mesh lines 4211 on the upper and lower sides increases synchronously, resulting in a uniform expansion of the width of all material dropping mesh gaps 423. During this process, the material dropping mesh gaps 423 always maintain a parallel, symmetrical, and consistent opening shape, without any local narrowing or misalignment and blockage.

[0047] As the gap 423 of the discharge net gradually expands, mussels smaller than the current size of the gap 423 are the first to pass through the gap 423 and fall under the action of vibration and gravity. Then, larger mussels pass through in turn, realizing continuous and stable release according to size from small to large.

[0048] See Figures 4-8 and Figure 10 As shown, an elastic protective belt 61 is provided between the inner frame 6 and the vibrating material frame 41 to close the gap generated when the two move relative to each other. The elastic protective belt 61 is arranged around the inner frame 6 and fixedly connected between the inner frame 6 and the vibrating material frame 41.

[0049] When the inner frame 6 moves up and down relative to the vibrating material frame 41, a dynamic gap is generated between the two. At this time, the elastic protective belt 61 stretches or compresses synchronously with its own elasticity and flexibility, always closely fitting the connection area between the inner frame 6 and the vibrating material frame 41.

[0050] During the ascent of the inner frame 6, the elastic protective band 61 is stretched but remains continuously closed. When the inner frame 6 descends and resets, the elastic protective band 61 retracts under the action of elastic restoring force, maintaining its original shape. Throughout the entire reciprocating motion, the elastic protective band 61 continuously and effectively seals the gap between the inner frame 6 and the vibrating material frame 41, preventing mussels from entering or getting stuck in the gap during vibration, thus ensuring the stability of the grading mechanism 4.

[0051] See Figures 4-8 As shown, a set of pre-cleaning pipes 411 are provided around the vibrating material frame 41 for preliminary rinsing of mussels during the grading process. The pre-cleaning pipes 411 are inclined toward the inside of the vibrating material frame 41.

[0052] When the mussels are put into the vibrating feed frame 41 and the grading process begins, cleaning water is simultaneously introduced into the pre-cleaning pipe 411. The water is sprayed out at an angle from the pipe opening, forming a water curtain that propels the water into the vibrating feed frame 41. The sprayed water first impacts the surface of the mussels accumulated on the net bag 42, washing away the attached mud, sand, and some impurities.

[0053] As the vibrating feed frame 41 continues to vibrate under the drive of the vibration generator 52, the water flow from the pre-cleaning pipe 411 can alternately rinse the various surfaces of the mussels from multiple directions. During the grading process of the moving net 422 gradually rising and the gap 423 of the falling feed net gradually widening, the pre-cleaning continues, so that the mussels have completed the initial cleaning before falling into the cleaning pool 2, thus improving the overall cleaning efficiency.

[0054] See Figures 4-8 As shown, guide rods 62 extend vertically downward from the four corners of the inner frame 6. The bottom of the vibrating material frame 41 is provided with a step 412 for supporting the inner frame 6. A guide opening is provided on the step 412 for the guide rods 62 to pass through. The vibrating material frame 41 is provided with a linear actuator for driving the inner frame 6 to move up and down.

[0055] When it is necessary to adjust the material drop mesh gap 423, the linear actuator is activated, and an upward force is applied to the inner frame 6 by retracting or extending the pull rope 63 or the telescopic push rod, which drives the inner frame 6 to move upward along the axis of the guide rod 62. At this time, the moving mesh 422 rises accordingly, causing the material drop mesh gap 423 to gradually expand.

[0056] Throughout the lifting process, the guide rod 62 and the guide opening form a guiding structure, which restricts the horizontal displacement of the inner frame 6, prevents it from shaking or deflecting, and ensures that the relative movement between the moving net 422 and the fixed net 421 remains stable. This enables the material dropping net gap 423 to open and close evenly and synchronously, ensuring grading accuracy and operational reliability.

[0057] See Figures 6-8 As shown, the linear actuator includes pull ropes 63 located at the four corners of the inner frame 6 and electric reels connected to the upper ends of the pull ropes 63. Each guide rod 62 is fixedly connected to the step 412 with a compression spring 621 for assisting the inner frame 6 to return to its downward position.

[0058] The electric reel is not shown in the figure.

[0059] When it is necessary to widen the gap 423 of the material drop net, the electric reel synchronously winds up the pull ropes 63 at the four corners, applying an upward pulling force to the inner frame 6, overcoming the elastic force of the compression spring 621, and driving the inner frame 6 to rise smoothly along the guide rod 62, thereby increasing the distance between the moving net 422 and the fixed net 421.

[0060] When the grading is completed and the moving net 422 needs to be returned to its original position, the electric reel begins to release the pull rope 63, and under the force of the compression spring 621, pushes the inner frame 6 downward as a whole, assisting the moving net 422 in completing the reset action.

[0061] See Figure 2 and Figure 3 As shown, the rear half of the horizontal conveying section 31 is equipped with an aeration pipe 311 for stirring the water flow, and the front half of the climbing section 32 is equipped with a flushing nozzle 321 for controlling the water flow intensity according to the size of the mussels.

[0062] As the mussels enter the rear half of the horizontal conveying section 31 along the conveyor belt 3, the aeration pipe 311 begins to operate. An external air source introduces compressed air into the aeration pipe 311 through a pipe, continuously releasing gas and forming a large number of fine bubbles in the water. This causes the surrounding water to surge violently, forming a uniform turbulent field. As the mussels are pushed by the pusher plate 33, they are subjected to multi-directional disturbances and impacts, effectively breaking up and peeling away the mud, sand, and impurities attached to the shell surface, achieving preliminary physical cleaning.

[0063] Subsequently, the mussels are conveyed upwards by conveyor belt 3 into the first half of the climbing section 32. At this point, the mussels have emerged from the water, and the rinsing nozzles 321 are activated, spraying high-pressure water directly onto the mussels' surfaces. The rinsing nozzles 321 have adjustable water pressure, allowing for differentiated rinsing of mussels of different sizes. Smaller mussels are rinsed with lower water pressure to avoid damaging their shells, while larger mussels are rinsed with higher water pressure to ensure that dirt deep within crevices is thoroughly removed.

[0064] The aeration and spraying processes work in stages. First, underwater churning loosens the dirt, and then high-pressure rinsing above the water precisely removes it, achieving a continuous cleaning process that is efficient and protects the shell.

[0065] See Figure 3 As shown, the frame 1 is equipped with a visual sensor for identifying the size of mussels, which works in conjunction with the rinsing nozzle 321.

[0066] The vision sensor is not shown in the figure.

[0067] As the mussels move upwards along the conveyor belt 3 to the front half of the climbing section 32, the imaging area of ​​the vision sensor covers the detection area in front of the washing nozzles 321 on the surface of the conveyor belt 3. It continuously collects image information of the passing mussels, capturing their shape and size characteristics, and transmits the image data to the control system in real time.

[0068] The system's built-in image processing algorithm analyzes the captured images to accurately identify the size category of each mussel. The identification result is immediately converted into a control signal to adjust the water supply pressure of the corresponding rinsing nozzle 321. When a small mussel is detected, the system instructs to reduce the water pressure to prevent shell damage. When a large mussel is detected, the system automatically increases the water pressure to ensure sufficient rinsing force to remove stubborn dirt from crevices. This dynamic and continuous online identification and response ensures that the rinsing intensity is always matched to the mussel size, guaranteeing both cleaning effectiveness and mussel integrity.

[0069] See Figure 2 and Figure 3 As shown, the surface of the conveyor belt 3 is provided with several push plates 33 at equal intervals along its length to prevent mussels from being stuck in the cleaning pool 2.

[0070] When mussels fall into the horizontal conveyor section 31 of the washing pool 2, they float with the water flow and come into contact with the conveyor belt 3. Due to the buoyancy of the water, some mussels may hang on the water surface or only slightly touch the surface of the conveyor belt 3, making it difficult for them to be naturally moved forward, which can easily cause them to stagnate and accumulate. At this time, as the conveyor belt 3 continues to run, the pusher plate 33 moves forward in sequence, and its edge gradually approaches and gently pushes the stagnant mussels.

[0071] The pusher plate 33 steadily propels the mussels forward, ensuring they do not spin in place within the washing tank 2. Throughout the entire journey of the horizontal conveying section 31, each batch of mussels moves at a uniform speed and in an orderly manner toward the ascending section 32, ensuring the continuity and stability of the washing process.

[0072] A method for efficient cleaning of mussels for grading and shell protection, applied to the aforementioned efficient cleaning equipment for mussel grading and shell protection, includes the following steps:

[0073] S1. Start the vibrating material frame 41, adjust the material drop gap 423 between the moving net 422 and the fixed net 421 to the minimum, and put in the mixed mussels;

[0074] S2. Gradually increase the mesh size of the feed net 423 so that the mussels fall into the washing pool 2 in order from small to large and move forward with the conveyor belt 3;

[0075] S3. After being aerated and turned over, the mussels enter the climbing section 32. The visual sensor identifies the size, and the control system adjusts the water pressure of the rinsing nozzle 321 to perform graded rinsing and complete the shell cleaning.

[0076] This invention achieves continuously adjustable mesh size 423 for material feeding through the relative movement of the moving mesh 422 and the fixed mesh 421. Combined with the vibration of the vibrating material frame 41, mussels are released in stages according to size, from smallest to largest, effectively avoiding crushing and damage caused by mixing different sizes during washing. The parallel and intersecting first mesh line 4211 and second mesh line 4221 ensure uniform mesh size expansion and accurate and stable grading. During the grading process, the pre-cleaning pipe 411 sprays water synchronously to remove surface mud from the mussels in advance, improving cleaning efficiency.

[0077] After the mussels are graded, the aeration pipe 311 at the horizontal conveyor section 31 uses bubble disturbance to create underwater turbulence, causing the mussels to tumble and shed attached impurities, achieving preliminary cleaning. As the mussels move along the conveyor belt 3 to the climbing section 32, visual sensors identify the mussel size online and intelligently adjust the water pressure of the rinsing nozzles 321, achieving differentiated treatment of small mussels with low-pressure shell protection and large mussels with high-pressure intensive washing, balancing cleanliness and integrity. This achieves fully automated operation from grading, pre-washing, main washing to conveying, improving cleaning efficiency, yield, and the level of equipment intelligence.

[0078] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A high-efficiency cleaning device for grading and protecting mussels, comprising a frame, a cleaning tank and a conveyor belt on the frame, the conveyor belt having a horizontal conveying section submerged below the liquid surface of the cleaning tank and an upward climbing section extending out of the liquid surface; Its features are, The front half of the horizontal conveying section is equipped with a grading mechanism for releasing mussels from small to large to the washing tank in stages. The grading mechanism is located above the horizontal conveying section and includes a vibrating material frame and a net bag disposed therein. The frame is equipped with a height adjustment frame for mounting the vibrating material frame. Vibration springs are installed between the four corners of the vibrating material frame and the height adjustment frame. The height adjustment frame is equipped with a vibration generator for driving the vibrating material frame to reciprocate. The net bag consists of a fixed net and a moving net. The fixed net is fixedly installed at the bottom of the vibrating material frame, and there is an inner frame inside the vibrating material frame, on which the moving net is fixedly installed. The inner frame can move the moving screen closer to or away from the fixed screen, forming a material drop gap between the fixed and moving screens. As the moving screen gradually moves upward away from the fixed screen, the material drop gap gradually increases, forming a continuously adjustable grading channel from small to large.

2. The high-efficiency cleaning equipment for grading and protecting mussels according to claim 1, characterized in that, The fixed mesh consists of several first mesh lines that are equally spaced along the edge of the vibrating material frame, and the moving mesh consists of several second mesh lines that are equally spaced along the edge of the inner frame. The first and second mesh lines are parallel and staggered to form several uniformly open material drop mesh gaps.

3. The high-efficiency cleaning equipment for grading and protecting the shells of mussels according to claim 2, characterized in that, An elastic protective belt is provided between the inner frame and the vibrating material frame to close the gap generated when the two move relative to each other. The elastic protective belt is set around the inner frame and fixedly connected between the inner frame and the vibrating material frame.

4. The high-efficiency cleaning equipment for grading and protecting mussels according to claim 3, characterized in that, A set of pre-cleaning pipes is provided around the vibrating feed frame for preliminary rinsing of mussels during the grading process. The pre-cleaning pipes are inclined toward the inside of the vibrating feed frame.

5. The high-efficiency cleaning equipment for grading and protecting mussels according to claim 1, characterized in that, Guide rods extend vertically downward from the four corners of the inner frame. The bottom of the vibrating material frame is provided with steps to support the inner frame. Guide openings are provided on the steps for the guide rods to pass through. A linear actuator is provided on the vibrating material frame to drive the inner frame to move up and down.

6. The high-efficiency cleaning equipment for grading and protecting mussels according to claim 5, characterized in that, The linear actuator includes pull ropes located at the four corners of the inner frame and electric reels connected to the upper ends of the pull ropes. Each guide rod is fixedly connected to a compression spring to assist the inner frame in resetting downwards.

7. The efficient cleaning equipment for grading and protecting mussels according to claim 1, characterized in that, The rear half of the horizontal conveying section is equipped with aeration pipes to churn the water, while the front half of the climbing section is equipped with flushing nozzles to control the water flow intensity according to the size of the mussels.

8. The high-efficiency cleaning equipment for grading and protecting the shells of mussels according to claim 7, characterized in that, The frame is equipped with a visual sensor for identifying the size of mussels, which works in conjunction with the rinsing nozzle.

9. The high-efficiency cleaning equipment for grading and protecting the shells of mussels according to claim 1, characterized in that, The conveyor belt surface is provided with several push plates at equal intervals along its length to prevent mussels from getting stuck in the washing pool.

10. A method for efficient cleaning and grading mussels, applied to the efficient cleaning and grading equipment for mussels described in any one of claims 1-9, characterized in that, Includes the following steps: S1. Start the vibrating material frame, adjust the gap between the moving net and the stationary net to the minimum, and put in the mixed mussels; S2. Gradually increase the mesh size of the feed net so that the mussels fall into the washing pool in order from small to large and move forward with the conveyor belt; S3. After being aerated and turned over, the mussels enter the climbing section. The visual sensor identifies the size, and the control system adjusts the water pressure of the rinsing nozzles to perform graded rinsing and complete the shell cleaning.

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