An air suction type picking device for shellfish

Abstract

This utility model relates to the field of agricultural machinery and equipment technology, and discloses a shellfish air-suction picking device, including a tiller pulled by a tractor and a picking component. The picking component includes a collection module and a sorting module. The collection module includes a scoop-shaped outer shell, with parallel feeding rollers and conveying rollers inside the shell. A suction pipe is located inside the shell, and a vortex air pump connected to the suction pipe is located at the top of the shell. The sorting module includes a coaxially arranged screen cylinder and screen cylinder shell. A screening motor is connected to the top of the screen cylinder via a coupling. The screen cylinder shell is connected to the vortex air pump via an air supply pipe. This utility model uses the feeding rollers and conveying rollers in the collection module, combined with the negative pressure suction force generated by the vortex air pump, to transport shellfish. During sorting, centrifugal force is used to separate impurities. This achieves mechanized, low-damage, and efficient harvesting of shellfish, reducing harvesting costs, saving water resources, maintaining the ecological balance of the aquaculture area, and ensuring the sustainable development of the shellfish aquaculture industry.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery and equipment technology, specifically to a shellfish air suction picking device. Background Technology

[0002] Shellfish, a type of mollusc, come in many varieties, including common ones such as ark shells, salamanders, snails, whelks, clams, and hard clams. Shallow-sea aquaculture is a part of the marine aquaculture industry, referring to the use of soft mud or sandy areas in the intertidal zone near the sea, which are leveled and dammed for seawater cultivation, mainly shellfish farming. Currently, my country has a wide variety of shellfish farming, with more than 30 species. With the increasing scale of shellfish farming, such as hard clams, the harvesting methods urgently need to be mechanized and automated. In China's traditional harvesting methods, it mainly relies on fishermen manually harvesting, which requires a high level of physical strength from the harvesters. Furthermore, the high cost and low efficiency of manual harvesting are problems that urgently need to be solved.

[0003] The applicant's previous Chinese utility model patent application, CN221329915U, disclosed a combine harvester for harvesting four-cornered clams in tidal flats. This harvesting mechanism includes a harvesting device and a tracked driving mechanism. The harvesting device uses a spiral roller brush to excavate the tidal flat substrate and shellfish, which are then sieved through a first and second screening frame to separate the shellfish from the tidal flat substrate during harvesting. However, the resistance between the harvesting device and the tidal flat substrate is significant during the harvesting process, and the harvesting efficiency still needs further improvement. In addition, high-pressure water jet or submersible harvesters are also used in large-scale shellfish harvesting. These methods utilize high-speed water currents or swirling currents to flush clams buried on beaches for harvesting. However, this harvesting method has several problems. First, the captured shellfish are prone to breakage, which reduces harvesting efficiency and affects product quality. In addition, the harvesting process uses a large amount of water, and the water flow carries silt and sand, causing the silt and sand in the aquaculture area to spread to deeper waters, resulting in thinning of the bottom sediment in shallow sea aquaculture areas and seriously damaging the ecological environment. This has impacted the sustainable development of the shellfish aquaculture industry. Utility Model Content

[0004] The purpose of this invention is to provide a shellfish air suction picking device to solve the problems mentioned in the background art.

[0005] This application provides a shellfish pneumatic suction picking device, including a tiller towed by a tractor, and a picking assembly detachably connected to the tiller. The picking assembly includes a collection module and a sorting module. The collection module includes a scoop-shaped outer shell, with a feeding roller and a conveying roller arranged parallel to each other on opposite sides of the inner side of the outer shell. A suction pipe is provided on the inner side of the outer shell facing the tiller end, and a vortex air pump connected to the suction pipe is provided at the top of the outer shell. The sorting module includes a screen cylinder and a screen cylinder shell arranged coaxially. A screening motor is provided at the top of the screen cylinder and connected to it via a coupling. The screen cylinder shell is connected to the vortex air pump via an air supply pipe.

[0006] In one possible implementation, the outer casing includes a set of parallel left and right baffles, a bottom plate is provided between the opposite surfaces of the left and right baffles near the bottom end, the left and right baffles are curved at the ends away from the tiller, and a rear baffle is provided between the left and right baffles and perpendicular to the bottom plate. The rear baffle is curved and has a material pipe opening that cooperates with the suction pipe on the side of the rear baffle near the left baffle.

[0007] In one possible implementation, the base plate is hollow, and multiple pads are arranged parallel to each other along the length of the base plate at the bottom end of the base plate. The pads have a triangular cross-section, and a partition plate extends upward through the base plate at the top of the pads near the tiller side.

[0008] In one possible implementation, the feeding roller is rotatably engaged with the left and right baffles via bearings, and a plurality of circumferentially arranged feeding plates are provided on the outer side of the feeding roller. The feeding roller is provided with a pulley at the end away from the right baffle and is connected to the conveying roller via a synchronous belt.

[0009] In one possible implementation, the conveying roller is rotatably coupled with the left and right baffles via bearings, and spiral conveying blades are provided on the outside of the conveying roller, extending from the end of the left baffle to the side of the suction pipe.

[0010] In one possible implementation, the suction pipe includes a set of parallel, S-shaped upper top plate and lower bottom plate, with baffles on both sides of the upper arc-shaped section of the upper top plate and lower bottom plate.

[0011] In one possible implementation, a mounting plate is screwed to the top of the outer casing, a vortex air pump is screwed to the top of the mounting plate, the air outlet of the vortex air pump is connected to the tiller through an air supply pipe, a hinge rod is provided on the mounting plate near the tiller end, auxiliary wheels are also provided on both sides of the outer casing, and a conveyor motor is provided at the top of the mounting plate, the conveyor motor is poweredly connected to the conveyor roller through a transmission belt.

[0012] In one possible implementation, the sorting module includes an installation frame with auxiliary wheels on both sides of the frame, a screen cylinder and a screen cylinder shell forming a screening box, and a discharge motor at the top of the installation frame; it also includes a conveying pipe that connects the screen cylinder to the suction pipe, and a rotary discharge valve is provided at the connection between the conveying pipe and the screen cylinder, and the rotary discharge valve is connected to the discharge motor through a coupling.

[0013] In one possible implementation, the screening motor has a rotating shaft extending downward through a coupling into the screen cylinder. The rotating shaft is coaxially arranged with the screen cylinder. An auxiliary sleeve is provided on the outside of the rotating shaft. The auxiliary sleeve is conical, and multiple circumferentially spaced paddles are provided on the outer side of the auxiliary sleeve.

[0014] In one possible implementation, the opening of the screen cylinder gradually decreases from bottom to top along the axial direction, so that the distance between the screen cylinder and the auxiliary sleeve remains constant; the screen cylinder shell is cylindrical or the opening gradually decreases from bottom to top along the axial direction, and a spiral scraper is provided on the inner side of the screen cylinder shell.

[0015] This invention offers the following advantages over existing technologies: In the collection module, the material-feeding roller and conveying roller work together, combined with the negative pressure suction force generated by the vortex air pump to transport shellfish, reducing squeezing damage during transport. In the sorting module, the material-feeding blades drive the shellfish to adhere to the inner wall of the screen cylinder, using centrifugal force to separate impurities. Simultaneously, the spiral scraper works with the rotating screen cylinder to scrape away mud, preventing screen blockage and ensuring screening efficiency. The temporary storage box facilitates centralized shellfish collection, and the vortex air pump's airflow assists the soil turner in loosening mud and sand, further improving operational efficiency. Through the coordinated operation of these components, the drawbacks of traditional harvesting and existing mechanical harvesting are effectively solved, achieving mechanized, low-damage, and efficient shellfish harvesting. This reduces harvesting costs, conserves water resources, maintains the ecological balance of the aquaculture area, and ensures the sustainable development of the shellfish farming industry. Attached Figure Description

[0016] Figure 1 This is an isometric drawing of the shellfish air suction picking device of this utility model; Figure 2 This is a schematic diagram of the pickup component of this utility model; Figure 3 This is a schematic diagram of the conveyor roller of this utility model; Figure 4 This is a schematic diagram of the suction tube of this utility model; Figure 5 This is a schematic diagram of the sieve cylinder shell of this utility model; Figure 6 This utility model Figure 5 AA diagram; Figure 7 This is a schematic diagram of the sieve cylinder of this utility model; Figure 8 This is a schematic diagram of the auxiliary sleeve of this utility model.

[0017] In the diagram: 1. Tractor; 2. Tiller; 3. Pickup assembly; 31. Collection module; 311. Outer shell; 3111. Left baffle; 3112. Right baffle; 3113. Base plate; 3114. Pad strip; 3115. Divider plate; 3116. Rear baffle; 3117. Material pipe opening; 3118. Synchronous belt; 3119. Mounting plate; 312. Feed roller; 3121. Feed plate; 313. Suction pipe; 3131. Top plate; 3132. Bottom plate; 3133. Enclosure plate; 314. Vortex air pump; 315. Hinge rod; 316. Auxiliary wheel; 317. Conveyor roller; 3171. Conveyor blade; 32. Sorting module; 321. Screen cylinder; 322. Screen cylinder shell; 3221. Scraper; 323. Screening motor; 3231. Rotating shaft; 3232. Auxiliary sleeve; 3233. Paddle; 324. Air supply pipe; 325. Mounting frame; 326. Screening box; 327. Unloading motor; 328. Conveying pipe; 3281. Rotary unloading valve; 329. Temporary storage box; 330. Conveying motor. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] like Figure 1-8 The illustrated shellfish pneumatic suction picking device includes a tiller 2 towed by a tractor 1, and a picking assembly 3 detachably connected to the tiller 2. The picking assembly 3 includes a collection module 31 and a sorting module 32. The collection module 31 includes a scoop-shaped outer shell 311. A feeding roller 312 and a conveying roller 317 are arranged parallel to each other on opposite sides of the inner side of the outer shell 311. A suction pipe 313 is provided on the inner side of the outer shell 311 facing the tiller 2. A vortex air pump 314 connected to the suction pipe 313 is provided at the top of the outer shell 311. The sorting module 32 includes a screen cylinder 321 and a screen cylinder shell 322 arranged coaxially. A screening motor 323 is provided at the top of the screen cylinder 321 and connected to it via a coupling. The screen cylinder shell 322 is connected to the vortex air pump 314 via an air supply pipe 324.

[0020] In this embodiment, the tractor 1 provides the power for the movement of the entire device, the soil turner 2 is used to turn the shellfish buried in the mud and sand of the shallow sea aquaculture area to the surface, providing a foundation for subsequent collection operations. The soil turning depth can be adjusted according to the burial depth of the shellfish to avoid excessive soil turning and damage to the bottom structure of the aquaculture area; the collection component 3 can be flexibly disassembled and assembled according to actual harvesting needs, which facilitates the transportation, maintenance and replacement of parts of the device, and reduces the maintenance cost and storage space occupation during the use of the equipment.

[0021] The picking component 3 includes a collection module 31 and a sorting module 32. The collection module 31 is mainly used to separate the shellfish turned out by the turner 2 from the mud and sand and transport them to a designated location, reducing the retention of shellfish in the mud and sand. The sorting module 32 is used to finely screen the collected shellfish, separating the shellfish from impurities such as mud, sand, gravel, and broken shells, ensuring the purity and quality of the harvested shellfish and meeting the requirements of subsequent processing or sales.

[0022] The collection module 31 includes a scoop-shaped outer shell 311. The scoop-shaped structure can expand the contact area between the outer shell 311 and the turned-out material, and more efficiently receive the shellfish and mud-sand mixture turned out by the tiller 2. The feeding roller 312 and the conveying roller 317 work together to form a continuous material transfer path, realizing the stable transfer of shellfish from the receiving area of ​​the outer shell 311 to the subsequent conveying channel. The inner side of the outer shell 311 facing the tiller 2 is provided with a suction pipe 313. One end of the suction pipe 313 is connected to the outer shell 311, and the other end is connected to the distribution pipe. The sorting module 32 is connected to guide the shellfish conveyed by the conveyor roller 317 to the sorting module 32; the top of the outer shell 311 is equipped with a vortex air pump 314 that is connected to the suction pipe 313. When the vortex air pump 314 is working, it can generate a stable negative pressure environment in the suction pipe 313. The negative pressure adsorption force is used to assist the conveying of shellfish in the suction pipe 313. Compared with the traditional mechanical pushing conveying, it can significantly reduce the friction and collision between shellfish and the inner wall of the pipe, reduce shellfish damage, improve shellfish conveying efficiency, and avoid material blockage in the pipe.

[0023] Please see the appendix Figure 2 As shown, the outer casing 311 includes a set of parallel left baffles 3111 and right baffles 3112. A bottom plate 3113 is provided between the opposite surfaces of the left baffles 3111 and right baffles 3112 near the bottom end. The left baffles 3111 and right baffles 3112 are curved at the ends away from the tiller. It also includes a rear baffle 3116 located between the left baffles 3111 and right baffles 3112 and perpendicular to the bottom plate 3113. The rear baffle 3116 is curved, and a material pipe opening 3117 that cooperates with the suction pipe 313 is provided on the side of the rear baffle 3116 near the left baffle 3111.

[0024] The base plate 3113 is hollow, and multiple pads 3114 are arranged parallel to each other along the length of the base plate 3113 at the bottom end of the base plate 3113. The pads 3114 have a triangular cross section, and a partition plate 3115 extends upward from the top of the pads 3114 near the side of the turner 2, passing through the base plate 3113.

[0025] In this embodiment, the left baffle 3111 and the right baffle 3112 are vertically arranged on both sides of the subsequent bottom plate 3113, forming a protective structure on both sides of the outer shell 311. This prevents the shellfish and mud mixture inside the outer shell 311 from leaking out from both sides, ensuring the integrity of the collection process, and preventing external debris from entering the interior of the outer shell 311 and affecting material processing. The bottom plate 3113 provides a stable bearing base for the turned-out material inside the outer shell 311. Its length and width are designed according to the turning width of the turner 2 and the amount of shellfish turned out, ensuring that it can fully support the turned-out material. The left baffle 3111 and the right baffle 3112, which are away from the turner 2 and the rear baffle 3116, are curved. The curved shape is adapted to the outer diameter of the conveying roller 317, further optimizing the material flow path inside the outer shell 311, so that the turned-out material can be more smoothly transferred to the suction pipe 313 by the feeding roller 312.

[0026] The perforated base plate 3113 allows the material-pushing roller 312 to allow mud and sand to leak out through the perforations during the material-pushing process, achieving initial separation of shellfish from some of the mud and sand, reducing the workload of the subsequent sorting module 32. The pad strip 3114 welded to the bottom of the base plate 3113 reduces the contact area between the base plate 3113 and the ground, reducing the frictional resistance when the picking component 3 moves. The partition plate 3115 can divide the turned-out material on the base plate 3113 into multiple areas, preventing a large amount of turned-out material from accumulating in one area and causing excessive load on the material-pushing roller 312. At the same time, it prevents shellfish from squeezing and colliding with each other during movement, reducing the shellfish breakage rate.

[0027] The feeding roller 312 is rotatably engaged with the left baffle 3111 and the right baffle 3112 via bearings. Multiple circumferentially arranged feeding plates 3121 are provided on the outer side of the feeding roller 312. A pulley is provided at the end of the feeding roller 312 away from the right baffle 3112 and is connected to the conveying roller 317 via a synchronous belt 3118. A pulley is provided at the end of the conveying roller 317 away from the left baffle 3111.

[0028] In this embodiment, a plurality of circumferentially arranged material-pushing plates 3121 are provided on the outer side of the material-pushing roller 312. The plurality of circumferentially arranged material-pushing plates 3121 can evenly push the shellfish on the bottom plate 3113 toward the conveying roller 317 during the rotation of the material-pushing roller 312, so as to avoid the shellfish from being stuck on the bottom plate 3113. At the same time, a gap of 1-2cm is left between the material-pushing roller 312 and the conveying roller 317 to avoid interference during the movement. The synchronous belt 3118 drive can ensure that the rotation speed of the material-pushing roller 312 and the conveying roller 317 is consistent, ensuring that the shellfish pushed by the material-pushing roller 312 can be received and conveyed by the conveying roller 317 in time, avoiding the accumulation and blockage of materials between the two, and improving the continuity and stability of material conveying.

[0029] The conveying roller 317 is rotatably engaged with the left baffle 3111 and the right baffle 3112 via bearings. A spiral conveying blade 3171 is provided on the outer side of the conveying roller 317, and the conveying blade 3171 extends from the end of the left baffle 3111 to the side of the suction pipe 313.

[0030] In this embodiment, the spiral conveying blade 3171 extends from the left baffle 3111 to the suction pipe 313. When the conveying roller 317 rotates, the spiral conveying blade 3171 can generate a conveying force along the axis of the conveying roller 317, which gradually conveys the shellfish pushed by the feeding roller 312 from the left baffle 3111 to the suction pipe 313. The conveying process is stable and can effectively prevent the shellfish from being damaged by violent impact during the conveying process. At the same time, the spiral structure can adapt to shellfish of different sizes, ensuring that shellfish of various sizes can be conveyed smoothly.

[0031] The suction pipe 313 includes a set of parallel S-shaped upper top plate 3131 and lower bottom plate 3132, with baffles 3133 on both sides of the upper arc-shaped section of the upper top plate 3131 and the lower bottom plate 3132.

[0032] Among them, the lower arc-shaped sections of the upper top plate 3131 and the lower bottom plate 3132 have no baffles 3133 on both sides, and the left baffle 3111 is closely attached to the upper top plate 3131 and the lower bottom plate 3132.

[0033] In this embodiment, the S-shaped structure can extend the airflow path inside the suction pipe 313, making the negative pressure generated by the vortex air pump 314 more evenly distributed inside the suction pipe 313, enhancing the adsorption effect on shellfish, while avoiding excessively fast airflow speed that could cause the shellfish to collide violently with the pipe wall of the suction pipe 313.

[0034] The lower arc-shaped section without baffle 3133 can reduce the flow resistance of airflow in the suction pipe 313, and prevent the fine mud and sand carried by the airflow from accumulating and clogging the suction pipe 313 at the baffle 3133. At the same time, it is convenient to observe the shellfish transportation situation inside the suction pipe 313, and promptly detect and deal with abnormal problems in the transportation process. The left baffle 3111 is tightly fitted with the upper top plate 3131 and the lower bottom plate 3132. The tight fit can ensure the sealing performance between the suction pipe 313 and the outer shell 311, prevent negative pressure from leaking from the fit, and ensure that the negative pressure strength in the suction pipe 313 meets the shellfish adsorption and transportation requirements.

[0035] A mounting plate 3119 is screwed to the top of the outer casing 311. A vortex air pump 314 is screwed to the top of the mounting plate 3119. The air outlet of the vortex air pump 314 is connected to the tiller 2 through an air supply pipe 324. A hinge rod 315 is provided on the end of the mounting plate 3119 near the tiller 2. Auxiliary wheels 316 are also provided on both sides of the outer casing 311. A conveyor motor 330 is provided on the top of the mounting plate 3119. The conveyor motor is poweredly connected to the conveyor roller 317 through a transmission belt.

[0036] In this embodiment, the air outlet of the vortex air pump 314 is connected to the soil turner 2 through the air supply pipe 324. After the airflow generated by the vortex air pump 314 completes the adsorption of shellfish, it is transported to the soil turner 2 through the air supply pipe 324. This can help the soil turner 2 loosen the mud and sand in the aquaculture area, improve the soil turning efficiency of the soil turner 2, and at the same time realize the recycling of airflow, reducing the impact of direct airflow emissions on the environment.

[0037] Among them, the auxiliary wheel 316 can support the weight of the outer shell 311, reduce the friction between the base plate 3113 and the ground when the outer shell 311 moves, and make the overall movement of the device smoother. At the same time, the auxiliary wheel 316 can rotate flexibly with the undulation of the ground, improving the adaptability of the device on uneven ground.

[0038] The sorting module 32 includes a mounting frame 325, with auxiliary wheels 316 on both sides of the mounting frame 325. The screen cylinder 321 and the screen cylinder shell 322 constitute a screening box 326. The top of the mounting frame 325 is equipped with a discharge motor 327. It also includes a conveying pipe 328 that connects the screen cylinder 321 to the suction pipe 313. A rotary discharge valve 3281 is provided at the connection between the conveying pipe 328 and the screen cylinder 321. The rotary discharge valve 3281 is connected to the discharge motor 327 through a coupling.

[0039] The mounting frame 325 includes a temporary storage box 329, which is connected to the screen cylinder 321 via a pipe.

[0040] In this embodiment, the mounting frame 325 provides a mounting support base for the various components of the sorting module 32. The sorting module 32 includes a screen cylinder 321 and a screen cylinder shell 322 arranged coaxially to avoid collision and friction between the screen cylinder 321 and the screen cylinder shell 322, ensuring the stability of the screening process. The screen cylinder 321 and the screen cylinder shell 322 constitute a screening box 326, which provides a closed working space for shellfish screening and prevents impurities from splashing and polluting the surrounding environment during the screening process. The top of the mounting frame 325 is equipped with a discharge motor 327 and a conveying motor 330. The discharge motor 327 provides power for subsequent discharge operations, and the conveying motor 330 is powered by the conveying roller 317 through a transmission belt to provide stable power for the rotation of the conveying roller 317.

[0041] The conveying pipe 328 serves as a channel for transporting shellfish from the collection module 31 to the sorting module 32. Its two ends are sealed to the suction pipe 313 and the screen cylinder 321 respectively to prevent shellfish from leaking out during the conveying process. A rotary discharge valve 3281 is provided at the connection between the conveying pipe 328 and the screen cylinder 321. The rotary discharge valve 3281 is connected to the discharge motor 327 through a coupling. The discharge motor 327 drives the rotary discharge valve 3281 to rotate. The valve core of the rotary discharge valve 3281 is directly connected to the output shaft of the discharge motor 327 through a coupling. This allows the material above to fall continuously into the screen cylinder 321, and the precise dynamic seal between its rotor and the shell effectively blocks the atmospheric pressure environment below and the negative pressure airflow above, maintaining the stability of the negative pressure in the suction pipe 313.

[0042] The screening motor 323 extends downward through a coupling to a shaft 3231 that penetrates into the screen cylinder 321. The shaft 3231 is coaxially arranged with the screen cylinder 321. An auxiliary sleeve 3232 is provided on the outside of the shaft 3231. The auxiliary sleeve 3232 is conical. Multiple paddles 3233 are provided on the outer side of the auxiliary sleeve 3232 at equal intervals along the circumference.

[0043] The opening of the sieve cylinder 321 gradually decreases from bottom to top along the axial direction, so that the distance between the sieve cylinder 321 and the auxiliary sleeve 3232 remains constant (within the error range); the sieve cylinder shell 322 is cylindrical or the opening gradually decreases from bottom to top along the axial direction, and a spiral scraper 3221 is provided on the inner side of the sieve cylinder shell 322.

[0044] In this embodiment, the conical auxiliary sleeve 3232 is adapted to the structure of the screen cylinder 321. The paddle 3233 on the auxiliary sleeve 3232 accelerates and scatters the falling material, so that the shellfish are fully dispersed and evenly thrown towards the inner wall of the screen cylinder 321. Under the action of centrifugal force, mud and sand particles and water droplets smaller than the screen cylinder aperture are quickly thrown out of the screen cylinder 321 and hit the inner wall of the screen cylinder shell 322, ensuring that the shellfish are fully separated from the impurities. The mud and sand that lose kinetic energy slide down the inner wall of the screen cylinder shell 322 to the beach under the action of gravity. In order to better facilitate the sliding of mud and sand, the screen cylinder shell 322 is also conical and has a large tilt angle (80-89 degrees). At the same time, the paddle 3233 can also prevent the shellfish from accumulating in the screen cylinder 321, ensuring that each shellfish can fully contact the screen holes of the screen cylinder 321, thereby improving the screening efficiency and screening accuracy.

[0045] During operation: First, the picking component 3 is connected and fixed to the tiller 2 through a detachable structure. The hinge rod 315 is adjusted to keep the bottom plate 3113 of the outer shell 311 at a suitable distance from the ground of the aquaculture area, ensuring that the auxiliary wheel 316 can stably support the outer shell 311 and the sorting module 32. Then, the tractor 1, tiller 2, vortex air pump 314, screening motor 323, unloading motor 327 and conveying motor 330 are started. The tractor 1 pulls the tiller 2 to move in the aquaculture area. The tiller 2 turns out the shellfish buried in the mud and sand. The collection module 31 follows closely behind. The scoop-shaped outer shell 311 gathers the turned-out mixture into it.

[0046] The conveyor motor 330 drives the conveyor roller 317 to rotate via the transmission belt. The conveyor roller 317 drives the feeding roller 312 to rotate synchronously via the synchronous belt 3118. The feeding plate 3121 on the outer side of the feeding roller 312 pushes the shellfish on the bottom plate 3113 toward the conveyor roller 317. When the conveyor roller 317 rotates, the spiral conveying blades 3171 on its outer side spirally convey the shellfish to the suction pipe 313. The vortex air pump 314 works in the suction pipe 313 to generate negative pressure. Under the action of negative pressure adsorption force, the shellfish are sucked into the suction pipe 313 and conveyed through the conveying pipe 328 to the connection between the screen cylinder 321 and the conveying pipe 328. The unloading motor 327 drives the rotary unloading valve 3281 to rotate, sending the shellfish evenly and orderly into the screen cylinder 321.

[0047] The screening motor 323 drives the rotating shaft 3231 to rotate, and the rotating shaft 3231 drives the auxiliary sleeve 3232 and the paddle 3233 to rotate synchronously. The paddle 3233 accelerates the shellfish in the screening cylinder 321 so that they can adhere to the inner wall of the screening cylinder 321. Under the action of centrifugal force, impurities such as mud, sand and gravel are thrown out through the screen holes of the screening cylinder 321 onto the inner wall of the screening cylinder shell 322. In order to prevent the screening cylinder 321 from being adhered to by mud, the screening cylinder 321 cooperates with the spiral scraper 3221 on the inner side of the screening cylinder shell 322 when rotating, so that the spiral scraper 3221 scrapes the mud off the screening cylinder 321 and prevents the screening cylinder 321 from being blocked. The screened shellfish enter the temporary storage box 329 in the installation frame 325 through the pipe for temporary storage. After the shellfish in the temporary storage box 329 accumulate to a certain amount, the staff can collect the shellfish in the temporary storage box 329, completing the material collection link of a shellfish harvesting operation.

[0048] Throughout the entire operation, the airflow generated by the vortex air pump 314 is transported to the soil turner 2 through the air pipe 324 after the material is sucked up, which helps the soil turner 2 loosen the mud and sand and improve the soil turning efficiency.

[0049] In summary, this embodiment, through the cooperation of the collection module 31 and the sorting module 32, achieves efficient collection, transportation and screening of shellfish, effectively reduces the breakage rate during shellfish harvesting, reduces water consumption, avoids damage to the bottom sediment and ecological environment of the aquaculture area, reduces labor costs, improves harvesting efficiency, and provides strong support for the sustainable development of the shellfish aquaculture industry.

[0050] The terms or phrases used in this application have the following meanings: In this application, "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features; in this application, "one or more" refers to any one, any two, or any two or more of the listed items, where "more than" refers to any two or any two or more; in this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate the orientation or positional relationship. Based on the orientation or positional relationship in actual application, this is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the components referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on this application. In this application, unless otherwise expressly specified and limited, the terms "installation", "connection", "joining", "fixing", etc. should be interpreted broadly. For example, they can refer to fixed connection, detachable connection, or integral connection. They can refer to mechanical connection or adhesive connection. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0051] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. An air suction type picking-up device for shellfish, comprising a plough pulled by a tractor, and further comprising a picking-up assembly detachably connected to the plough, characterized in that: The picking component includes a collection module and a sorting module; The collection module includes a scoop-shaped outer shell, with a material-pulling roller and a conveying roller arranged in parallel axes between opposite faces inside the outer shell, a suction pipe inside the outer shell facing the tiller end, and a vortex air pump connected to the suction pipe at the top of the outer shell. The sorting module includes a screen cylinder and a screen cylinder shell arranged coaxially. A screening motor is provided at the top of the screen cylinder and connected to it via a coupling. The screen cylinder shell is connected to a vortex air pump via an air supply pipe.

2. The shellfish air-suction picking device according to claim 1, characterized in that: The outer shell includes a set of parallel left and right baffles, a bottom plate is provided between the opposite surfaces of the left and right baffles near the bottom end, the left and right baffles are curved at the ends away from the tiller, and also includes a rear baffle located between the left and right baffles and perpendicular to the bottom plate. The rear baffle is curved and has a material pipe opening that cooperates with the suction pipe on the side of the rear baffle near the left baffle.

3. The shellfish air-suction picking device according to claim 2, characterized in that: The base plate is hollow, and multiple pads are arranged parallel to each other along the length of the base plate at the bottom end of the base plate. The pads have a triangular cross-section, and a partition plate extends upward from the top of the pads near the tiller side, passing through the base plate.

4. The shellfish air-suction picking device according to claim 3, characterized in that: The feeding roller is rotatably coupled with the left and right baffles via bearings. Multiple circumferentially arranged feeding plates are provided on the outer side of the feeding roller. A pulley is provided on the end of the feeding roller away from the right baffle and is connected to the conveying roller via a synchronous belt.

5. The shellfish air-suction picking device according to claim 4, characterized in that: The conveying roller is rotatably coupled with the left and right baffles via bearings. Spiral conveying blades are provided on the outer side of the conveying roller, extending from the left baffle end to the suction pipe side.

6. The shellfish air-suction picking device according to claim 5, characterized in that: The suction pipe includes a set of parallel S-shaped upper top plate and lower bottom plate, with baffles on both sides of the upper arc-shaped section of the upper top plate and lower bottom plate.

7. The shellfish air-suction picking device according to claim 6, characterized in that: A mounting plate is screwed to the top of the outer shell, and a vortex air pump is screwed to the top of the mounting plate. The air outlet of the vortex air pump is connected to the tiller through an air supply pipe. A hinge rod is provided on the mounting plate near the tiller end. Auxiliary wheels are also provided on both sides of the outer shell. A conveyor motor is provided at the top of the mounting plate, and the conveyor motor is poweredly connected to the conveyor roller through a transmission belt.

8. The shellfish air suction picking device according to claim 7, characterized in that: The sorting module includes an installation frame with auxiliary wheels on both sides. The screen cylinder and screen cylinder shell form a screening box, and a discharge motor is installed at the top of the installation frame. It also includes a conveying pipe that connects the screen cylinder to the suction pipe. A rotary discharge valve is installed at the connection between the conveying pipe and the screen cylinder. The rotary discharge valve is connected to the discharge motor through a coupling.

9. The shellfish air-suction picking device according to claim 8, characterized in that: The screening motor extends downward through a coupling and has a rotating shaft that penetrates into the screen cylinder. The rotating shaft is coaxially arranged with the screen cylinder. An auxiliary sleeve is provided on the outside of the rotating shaft. The auxiliary sleeve is conical and has multiple circumferentially spaced paddles on its outer side.

10. The shellfish air-suction picking device according to claim 9, characterized in that: The opening of the screen cylinder gradually decreases from bottom to top along the axial direction, so that the distance between the screen cylinder and the auxiliary sleeve remains constant; the screen cylinder shell is cylindrical or the opening gradually decreases from bottom to top along the axial direction, and a spiral scraper is provided on the inner side of the screen cylinder shell.

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