A sea cucumber cultivation corrugated board cleaning device and a matching breeding basket

Abstract

The application discloses a kind of sea cucumber cultivation corrugated board cleaning equipment and matching rearing basket, belong to aquaculture equipment technical field.Cleaning equipment includes cleaning tank body, upper hanging component, pull-down component, tangential air distribution component and pulse reversing air path component;Matching rearing basket is vertical grid structure, and top frame, longitudinal grid and transverse package strip constitute corrugated board plug-in site.The application adopts upper hanging flexible suspension, pull-down symmetric elastic reset suspension layout, cooperates left and right double-way arc tangential air distribution structure, relies on tangential pulse airflow to form horizontal cyclone, promotes rearing basket reciprocating twist swing, and combines air wash and inertia shake-off dual action to strip dirt.

Description

Technical Field

[0001] This invention belongs to the field of aquaculture equipment technology, specifically relating to a corrugated plate cleaning device for sea cucumber farming and a matching seedling basket, mainly used for batch cleaning of corrugated plates for sea cucumber seedling cultivation. Background Technology

[0002] Corrugated boards for sea cucumber seedling cultivation are attachment substrates used in the sea cucumber seedling production process. They are corrugated plastic boards primarily used for sea cucumber seedlings to attach and grow. During the cultivation period, the surface of the corrugated boards will gradually accumulate dirt such as sludge, diatom biofilm, uneaten feed, and aquaculture excrement. If not cleaned thoroughly, this will directly affect the water quality of the seedling cultivation area and increase the risk of seedling diseases. Therefore, the corrugated boards need to be cleaned regularly.

[0003] Currently, there are two main technical solutions for cleaning corrugated plates used in sea cucumber seedling cultivation: The first category is roller brush type single-piece cleaning equipment, typically represented by the invention patents authorized by announcement numbers CN114769193B and CN116967190B. Among them, CN114769193B adopts a rotating cleaning roller structure with an axially reciprocating cleaning strip. The circumferential rotation of the cleaning roller, combined with the axial reciprocating motion of the cleaning strip, performs contact wiping cleaning on the single corrugated plate that is conveyed in. CN116967190B is equipped with a brush roller that can move laterally back and forth. With the water washing devices on both sides of the cleaning table, the brush roller itself is rinsed and cleaned simultaneously during the cleaning of the corrugated plate.

[0004] This type of solution has several inherent drawbacks: First, it uses single corrugated plates as cleaning components, relying on a conveyor mechanism to feed each plate individually. However, in actual production, corrugated plates are rotated by vertically inserting whole baskets. When using the equipment, manual unpacking, cleaning, and repacking of each plate is required, making labor costs far higher than the cleaning operation itself. This results in extremely low batch processing efficiency and cannot match the production pace of centralized batch cleaning in seedling farms. Second, the equipment integrates numerous precision mechanical components such as gear and worm gear drives, lifting mechanisms, and linear motion modules. In the rough production environment of seedling farms with high salt spray, high humidity, and abundant sludge, metal parts are prone to corrosion, and the transmission structure is easily jammed by sludge, leading to a high equipment failure rate and difficult daily maintenance. Third, the contact roller brush can only form effective positive pressure contact with the crest areas of the corrugated plate. The recessed areas at the bottom of the corrugations cannot obtain sufficient cleaning force, making it difficult to completely remove stubborn dirt such as firmly attached diatomaceous earth biofilms, resulting in obvious cleaning dead zones.

[0005] The second type is the whole-basket lifting and washing method (commonly known in the industry as "basket rushing"), which is mostly used in small and medium-sized seedling farms. In this method, the whole basket with corrugated plates is immersed in a clean water tank. The basket is then moved up and down rapidly in a vertical direction by manual labor or a simple lifting device. The relative impact between the water and the corrugated plates washes away the sludge, diatom biofilm, uneaten feed, and aquaculture manure accumulated on the surface of the plates.

[0006] While this method allows for batch processing of entire baskets without disassembling the corrugated sheets, it still has significant shortcomings in terms of actual cleaning effect and work efficiency: First, the cleaning effect is highly dependent on the operator's strength and experience. The up-and-down movement and speed lack standardized control, resulting in significant differences in the scouring force experienced by different batches and locations of the corrugated sheets, leading to poor cleaning quality stability. Second, the water flow mainly washes along the vertical front of the sheets, making it difficult to effectively penetrate the recessed areas at the bottom of the corrugations and the deep gaps between adjacent sheets. The firmly attached diatomaceous earth biofilm cannot be fully removed, resulting in incomplete overall cleaning and only achieving a rough wash of surface dirt. Third, the dirt detached during the cleaning process remains suspended in the water within the tank, with no real-time drainage path. As the cleaning progresses, the turbidity of the water continuously increases, making it easy for the detached dirt to re-adhere to the surface of the corrugated sheets, causing secondary pollution. Fourth, the manual lifting operation is extremely labor-intensive, resulting in high labor costs for batch cleaning and very limited improvement in overall work efficiency.

[0007] In summary, existing corrugated plate cleaning technology cannot simultaneously achieve batch processing efficiency, thorough cleaning, and economical equipment operation, making it difficult to meet the actual production needs of sea cucumber seedling farms. Summary of the Invention

[0008] To address the aforementioned shortcomings of existing technologies, the present invention aims to provide a corrugated plate cleaning device and matching corrugated plate basket for sea cucumber farming. This device completely breaks away from the conventional single-piece contact cleaning technique, enabling batch cleaning of the entire corrugated plate basket without disassembling the plates or using contact consumables. Through innovative fluid structure and reverse utilization of the structure of the parts being cleaned, it improves cleaning uniformity and the ability to remove stubborn scale, while maintaining the advantages of minimalist structure and low operating costs, making it suitable for the actual production environment of aquaculture seedling farms.

[0009] To achieve the above objectives, the present invention adopts the following technical solution: On one hand, the present invention provides a corrugated plate cleaning device for sea cucumber farming, comprising: The cleaning tank is used to hold the cleaning water. The upper suspension assembly flexibly connects to the upper end of the seedling basket with a full-wave pattern plate, without restricting the circumferential rotation of the seedling basket or the vertical displacement of the seedling basket; A pull-down assembly is elastically connected to the lower end of the seedling basket, allowing the seedling basket to float in the water within the cleaning tank. The pull-down assembly includes two symmetrically arranged plastic-coated stainless steel tension springs or food-grade seawater-resistant rubber bands. The two tension springs or rubber bands are respectively obliquely positioned on both sides of the lower part of the seedling basket. The upper ends of the tension springs or rubber bands are hooked to the lower corner of the side wall of the seedling basket, and the lower ends are hooked to the lower part of the inner wall of the cleaning tank. Under normal conditions, both tension springs or rubber bands are in a slightly stretched state, keeping the seedling basket in a centered position. A tangential air distribution assembly is arranged along the inner wall of the cleaning tank and includes multiple sets of air jet nozzles. The air jet nozzles are tangentially arranged around the circumference of the tank. The tangential air distribution assembly includes a left arc-shaped air distribution pipe and a right arc-shaped air distribution pipe arranged symmetrically. The two sets of air distribution pipes are attached to the lower part of the inner wall of the cleaning tank. The air jet nozzles on the two sets of air distribution pipes have opposite tangential directions, corresponding to clockwise and counterclockwise swirling flow, respectively. The axis of the air jet nozzles is at an elevation angle of 20° to 30° with the horizontal plane, and the airflow has both horizontal tangential thrust and upward lifting force. The pulse reversing air path assembly is located outside the cleaning tank and connected to the tangential air distribution assembly air path. It is used to periodically and alternately output reverse airflow. The ejected airflow forms a horizontal vortex in the water, which pushes the seedling basket to twist around the vertical central axis to one side. At the same time, the pull-down assembly stretches and stores energy synchronously. When the vortex reverses direction, the pull-down assembly releases elastic potential energy, which, together with the thrust of the reverse vortex, drives the seedling basket to swing back quickly, forming a reciprocating twisting and swinging motion to shake off the dirt attached to the surface of the corrugated plate.

[0010] Furthermore, the pulse reversing air circuit assembly includes a high-pressure air source and a pneumatic timed reversing valve. The air inlet of the pneumatic timed reversing valve is connected to the high-pressure air source, and the two air outlets are respectively connected to the left arc-shaped air distribution pipe and the right arc-shaped air distribution pipe. The periodic automatic switching of the swirl direction is achieved by alternately connecting the two sets of air distribution pipes at a time.

[0011] Furthermore, an ozone generator is connected in series in the air path of the pulse reversing air path assembly to simultaneously disinfect and sterilize the water and corrugated plate during the cleaning process.

[0012] Furthermore, the hanging assembly includes a cantilever frame, a hook, and four hanging ropes. The cantilever frame is fixedly mounted on one side of the top of the cleaning tank. The hook is attached to the cantilever end of the cantilever frame. The upper ends of the four hanging ropes are connected to the hook, and the lower ends are respectively connected to the four corners of the top of the seedling basket, so that the seedling basket is kept in a horizontal and centered hanging state.

[0013] Furthermore, the bottom of the cleaning tank is provided with a conical sedimentation zone, and the bottom end of the conical sedimentation zone is provided with a drain outlet for intermittently discharging the deposited heavy dirt; the lower side wall of the cleaning tank is provided with a seawater inlet, and the upper side wall is provided with an integrated overflow circulation outlet; the lower part of the integrated overflow circulation outlet is a pumping section, and the upper part is a sawtooth overflow weir, which are respectively connected to the return water end and the inlet end of the filter device to form a seawater circulation filtration loop, so as to simultaneously realize water circulation purification and scum overflow discharge.

[0014] Furthermore, the seawater inlet is tangentially arranged along the inner wall of the cleaning tank, and the water flow direction is consistent with the swirling direction on the same side, which helps to enhance the swirling effect inside the tank.

[0015] Furthermore, the cleaning tank is also filled with a number of suspended cleaning media, the density of which is similar to that of the cleaning water, and can move synchronously with the swirling flow; the suspended cleaning media are food-grade hollow plastic balls or short cylindrical particles, the outer diameter of which is larger than the minimum gap between the corrugated plates.

[0016] On the other hand, the present invention also provides a seedling basket adapted to the corrugated plate cleaning equipment for sea cucumber farming, comprising a top frame, multiple longitudinal grid strips and two transverse wrapping strips; The projection of the top frame is rectangular, with a width greater than or equal to the width of the corrugated plate and a length greater than or equal to the sum of the thickness of the multiple corrugated plates and the gaps between them. The multiple longitudinal grid bars are U-shaped with a larger top and a smaller bottom. The upper ends are fixed to the long side of the top frame at equal intervals. Two adjacent longitudinal grid bars form a corrugated plate insertion groove. The corrugated plate is vertically inserted into the insertion groove from inside the top frame and fixed. A uniform water passage gap is left between adjacent corrugated plates. The two horizontal strips are U-shaped, wider at the top and narrower at the bottom. The upper end is fixedly connected to the short side of the top frame at equal intervals, and the bottom horizontal edge is fixedly connected to the bottom horizontal edge of all the vertical strips.

[0017] Furthermore, the spacing between two adjacent longitudinal grid bars is matched with the wave height of the corrugated plate. After the corrugated plate is inserted, the direction of the corrugations forms an oblique angle with the swirling direction in the groove, so that the crests of the corrugations can cut the rising bubbles to generate microbubbles, thereby enhancing the cleaning effect at the bottom of the valley.

[0018] Furthermore, the top frame is equipped with hanging ring structures at the four corners, which can be connected to hooks via hanging ropes for easy attachment to the cleaning tank or seedling pond; the corners of the two outermost longitudinal gratings of the seedling basket are convenient for attaching tension springs or rubber bands.

[0019] Compared with the prior art, the present invention has the following outstanding substantive features and significant progress: The whole-basket hanging cleaning method significantly improves efficiency. It is directly compatible with the existing standard hanging baskets in the seedling farm. The whole basket can be hung in for cleaning without disassembling and loading each piece individually. The cleaning time for a single basket is only 3 to 5 minutes. The batch processing efficiency is an order of magnitude higher than the existing single-piece roller brush equipment, which greatly saves labor costs and matches the production rhythm of centralized cleaning.

[0020] Dual-path air distribution + symmetrical elastic reset for more thorough cleaning through reciprocating swirl. Utilizing a symmetrical arc-shaped tangential air distribution structure, coupled with symmetrical pull-down elastic reset components on both sides, the swirling thrust and spring rebound force create a stable reciprocating torsional torque. Unlike ordinary aeration and static rinsing, this system relies on inertial centrifugal force to shovel away stubborn dirt between plates and at the bottom of valleys. Combined with the continuous scouring of tangential air waves, the removal effect on deposits such as diatomaceous earth biofilms is significantly better than unidirectional water flow cleaning, greatly improving cleaning depth and uniformity. This structure requires no additional drive motor, relying entirely on the airflow and elastic components to achieve reciprocating motion—a concept that is not immediately obvious.

[0021] Tangential water inlet enhances synergistic effect, further improving flow field intensity. The seawater inlet adopts a tangential water inlet design, where the inlet water flow and the swirling airflow on the same side are superimposed in the same direction. This not only helps to strengthen the overall swirling intensity within the tank and improve the power and swaying effect of the basket's twisting, but also prevents the inlet water from directly hitting the bottom of the tank and stirring up the deposited sludge, ensuring the cleanliness of the water in the cleaning area and further improving cleaning efficiency and cleaning stability.

[0022] With no bottom moving parts, operational reliability is significantly improved. The bottom turntable, bearings, and other moving mechanisms are completely eliminated, and there are no precision parts inside the tank that are prone to jamming or corrosion, thus completely avoiding the potential for sludge stagnation and seawater corrosion. The only vulnerable part is the spring, which is inexpensive and easy to replace. The equipment has high reliability in long-term operation and is suitable for extensive aquaculture environments with high salinity and abundant mud.

[0023] The small-angle reciprocating swing eliminates the risk of rope entanglement at the source. Instead of continuous 360° rotation, it adopts a small-angle reciprocating twist of ±20°~30°, which solves the technical problem of rope twisting and entanglement caused by continuous rotation of the hanging basket. The suspension structure is stable and reliable, and can directly use the existing lifting equipment and turnover baskets in the seedling farm without additional modifications.

[0024] The corrugated self-increasing efficiency solves the industry problem of valley cleaning. By utilizing the wave structure of the corrugated plate itself, the crests and edges cut the rising air bubbles to form a large number of microbubbles. The microbubbles collapse at the valley bottom to generate micro-jet flow. Combined with the Venturi effect of the corrugated grooves, the flow velocity at the valley bottom is enhanced, turning the industry's recognized cleaning dead zone into a cleaning efficiency point, and achieving deep cleaning of the valley bottom without additional consumables.

[0025] Integrated cleaning and disinfection, meeting the requirements for seedling cultivation and disease prevention. An ozone generator is connected in series in the air circuit, and the cleaning operation simultaneously completes the comprehensive disinfection and sterilization of the water and corrugated plates, effectively killing harmful organisms such as Vibrio and parasite eggs. No additional disinfection process or equipment is required, and cleaning and disease prevention treatment are completed in one step, meeting the strict hygiene requirements of sea cucumber seedling cultivation.

[0026] Layered sewage discharge and circulating filtration completely eliminate secondary pollution. The layered sewage discharge system, consisting of bottom sedimentation discharge, top scum overflow, and mid-layer water circulation filtration, ensures that detached dirt is immediately removed from the cleaning area. Combined with an external filtration device, the water is continuously purified, preventing secondary dirt adhesion at the source. The non-contact cleaning process eliminates the risk of contamination from brushes and other consumables, meeting the hygiene requirements for seedling cultivation.

[0027] With its extremely simple structure and low implementation cost, the core power source only requires a high-pressure air source. It has no motor, transmission, or complex electronic control components, and its manufacturing and maintenance costs are significantly lower than existing roller brush equipment, making it perfectly suited to the investment level and usage needs of small and medium-sized seedling farms. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the cleaning equipment of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of the cleaning tank after partial cross-section; Figure 3 for Figure 1 Top view; Figure 4 This is a schematic diagram of the structure of the seedling basket of the present invention; Figure 5 This is a schematic diagram of the structure of the seedling basket after the corrugated plate is inserted.

[0029] In the diagram: 100-Cleaning tank, 101-Conical sedimentation zone, 102-Drain outlet, 103-Seawater inlet, 104-Overflow circulation integrated outlet; 200-Lifting assembly, 201-Cantilever hanger, 202-Lifting rope, 203-Hook; 300-Pull-down assembly, 301-Tension spring; 400-Tangential air distribution assembly, 401-Air jet nozzle, 402-Left arc-shaped air distribution pipe, 403-Right arc-shaped air distribution pipe; 500-Seedling basket, 501-Top frame, 502-Longitudinal grating, 503-Transverse wrapping strip. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0031] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0032] Example 1: Basic Corrugated Plate Cleaning Equipment for Sea Cucumber Farming As shown in Figures 1 to 5, the sea cucumber farming corrugated plate cleaning equipment described in this embodiment includes a cleaning tank 100, an upper lifting assembly 200, a lowering assembly 300, a tangential air distribution assembly 400, and a pulse reversing air path assembly.

[0033] Specific structure and implementation parameters of each component 1.1 Cleaning tank 100 The cleaning tank 100 is made of food-grade PP sheet welded together, or fiberglass can be used. The overall shape is a vertical square tank, and the top opening size is designed according to the standard seedling basket size 500. The standard size is 1200mm long, 1000mm wide, and 800mm high. The tank wall thickness is 15~20mm, which has sufficient structural strength and seawater corrosion resistance.

[0034] The bottom of the cleaning tank 100 is set as a conical sludge settling area 101 with a cone angle of 60°~90°, which facilitates the accumulation of heavy dirt along the cone wall. The bottom end of the conical sludge settling area 101 is provided with a drain port 102, which is equipped with a DN80~DN100 manual butterfly valve or ball valve for intermittent discharge of deposited heavy sludge, residual bait and other large particles of dirt.

[0035] A seawater inlet 103 with a diameter of DN50 is provided on the lower side wall of the cleaning tank 100 and above the conical sedimentation zone 101. The water inlet 103 is tangentially arranged along the tank wall and is consistent with the direction of the vortex formed by the airflow on the same side. The water inlet can form a superposition effect with the airflow vortex, which helps to enhance the overall vortex intensity in the tank, while avoiding the water from directly hitting the bottom of the tank and stirring up the deposited sludge, thus ensuring the cleanliness of the water in the cleaning area.

[0036] The upper side wall of the cleaning tank 100 is equipped with an integrated overflow circulation outlet 104 with a pipe diameter of DN65. The lower part of the outlet is a pumping section, located 100-150mm below the normal liquid level, used to pump mid-layer clean water into an external filtration device. The upper part is a sawtooth overflow weir, with the top of the weir flush with the highest designed liquid level, used to overflow lightweight biofilm debris and scum floating on the water surface. An external mesh filter or sand filter is connected to the outlet, and the filtered water flows back to the seawater inlet 103, forming a closed-loop seawater circulation filtration circuit.

[0037] Four support legs are welded to the bottom of the cleaning tank 100. The support legs are made of galvanized steel pipes wrapped with PP material, which raises the tank as a whole, making it easier to operate the bottom drain valve and connect the pipeline.

[0038] 1.2 Suspension assembly 200 The lifting assembly 200 includes a cantilever frame 201, four lifting ropes 202, and a hook 203.

[0039] The cantilever hanger 201 is made of welded stainless steel square tubing and is fixedly installed on one long side of the top of the cleaning tank 100. The cantilever end extends upward toward the center of the tank to ensure that the suspension point is located directly above the center of the tank.

[0040] Hook 203 is made of stainless steel lifting hook and is attached to the lifting hole at the cantilever end of the cantilever frame 201. It can be flexibly picked up and put down and is compatible with the transportation habits of the existing lifting equipment in the nursery.

[0041] The hanging rope 202 is made of plastic-coated stainless steel wire rope with a diameter of 4-6mm. It is resistant to seawater corrosion and has high strength. The upper ends of the four hanging ropes 202 are tied together to the hook 203, and the lower ends are respectively connected to the four corners of the top frame 501 of the seedling basket 500. The length of the hanging rope 202 ensures that after the seedling basket 500 is completely immersed in the water, the top is 50-100mm from the liquid surface and the bottom is 150-200mm from the bottom of the tank, leaving sufficient space for swing and flow.

[0042] The flexible suspension characteristics of the upper suspension component 200 do not restrict the circumferential rotation of the seedling basket 500, while limiting its vertical displacement by the length of the suspension rope, ensuring that the basket is always at the optimal cleaning water level.

[0043] 1.3 Drop-down component 300 The pull-down assembly 300 includes two symmetrically arranged plastic-coated stainless steel tension springs 301, which can also be replaced by food-grade seawater-resistant rubber bands, suitable for small, lightweight baskets.

[0044] Two tension springs 301 are respectively diagonally arranged on the lower left and right sides of the seedling basket 500, in a symmetrical arrangement; the upper end of the tension spring 301 is hooked at the lower corner of the outermost longitudinal grid 502 of the seedling basket 500, and the lower end is hooked on the fixed seat at the lower part of the inner wall of the cleaning tank 100. The fixed seat is a PP seat with a hanging ring, which is welded or bolted to the inner wall of the tank.

[0045] Under normal conditions, both tension springs 301 are in a slightly stretched state with an initial tension of 50~100N, ensuring that the seedling basket 500 can be stably kept in the center of the trough whether it is empty or fully loaded, without tilting.

[0046] The stiffness coefficient of the tension spring 301 is matched according to the total weight of the fully loaded seedling basket 500, usually selected as 100~200N / m, to ensure that the swirling thrust can push the basket to twist 20°~30°, and at the same time provide sufficient angular acceleration when rebounding to form an effective swinging effect.

[0047] 1.4 Tangential air distribution assembly 400 The tangential air distribution assembly 400 includes a left arc-shaped air distribution pipe 402 and a right arc-shaped air distribution pipe 403, both made of UPVC or stainless steel with a diameter of DN25. They are attached to the lower part of the inner wall of the cleaning tank 100, at a height of 100~150mm from the bottom of the tank.

[0048] The left arc-shaped air distribution pipe 402 and the right arc-shaped air distribution pipe 403 are symmetrically arranged along the inner wall of the tank, each in a semi-circular arc shape with an arc of approximately 150°~180°; multiple sets of air jet nozzles 401 are evenly arranged on the two air distribution pipes, with a nozzle spacing of 80~100mm.

[0049] The exhaust direction of the jet nozzle 401 is tangentially arranged along the circumference of the tank, and the axis is at an elevation angle of 20°~30° with the horizontal plane; the nozzle tangential of the left arc-shaped air distribution pipe 402 corresponds to the clockwise direction, and the nozzle tangential of the right arc-shaped air distribution pipe 403 corresponds to the counterclockwise direction; when air is supplied through a single air distribution pipe, a spiral upward swirling flow in the corresponding direction can be formed in the tank.

[0050] The jet nozzle 401 has an orifice diameter of 1.5~2.5mm. When the working air pressure is 0.2~0.3MPa, it can generate dense medium and large bubbles, which have both horizontal thrust and upward buoyancy.

[0051] 1.5 Pulse-commutated airflow path assembly The pulse reversing air circuit assembly is located outside the cleaning tank 100 and includes a high-pressure air source, a pneumatic timed reversing valve and an ozone generator.

[0052] The high-pressure air source uses a vortex air pump or air compressor, with an output air pressure of 0.2~0.4MPa and an air volume matched according to the tank volume, usually 2~5m³ / min.

[0053] The pneumatic timed reversing valve adopts a two-position five-way pneumatic reversing valve, which is used in conjunction with a timer relay to achieve automatic reversing; the air inlet of the reversing valve is connected to a high-pressure air source, and the two air outlets are respectively connected to the left arc-shaped air distribution pipe 402 and the right arc-shaped air distribution pipe 403 through pipelines.

[0054] The reversing cycle can be adjusted according to cleaning needs, and is usually set to 20~40 seconds / cycle, that is, after 20~40 seconds of ventilation on one side, it automatically switches to the other side to achieve periodic automatic switching of the vortex direction.

[0055] An ozone generator is connected in series in the air circuit, and the ozone concentration is controlled at 0.5~1mg / L. During the cleaning process, ozone is mixed into the water with the airflow and diffused evenly, simultaneously disinfecting and sterilizing the water and corrugated plate, killing Vibrio and parasite eggs, and meeting the requirements for seedling prevention.

[0056] 1.6 500 seedling baskets included As shown in Figures 4 and 5, the seedling basket 500 is made of food-grade PP material through one-piece injection molding or welding, including a top frame 501, multiple longitudinal grid strips 502 and two transverse wrapping strips 503.

[0057] The top frame 501 is a rectangular frame with a standard size of 1000mm in length and 800mm in width. The width is greater than the width of the corrugated plate, and the length can accommodate 20 to 30 vertically inserted corrugated plates. A water passage gap of 8 to 12mm is reserved between adjacent corrugated plates.

[0058] The longitudinal grid bars 502 are U-shaped with a larger top and a smaller bottom. The upper end is welded and fixed to the long side of the top frame 501 at equal intervals. The spacing matches the wave height of the corrugated plate, which is usually 30~40mm. A corrugated plate insertion groove is formed between two adjacent longitudinal grid bars 502. The corrugated plate can be vertically inserted into the groove from the top and fixed without additional fasteners.

[0059] The horizontal wrapping strip 503 is also U-shaped, wider at the top and narrower at the bottom, and is set on the front and rear sides of the basket. The upper end is fixed to the short side of the top frame 501, and the bottom horizontal edge is welded and fixed to the bottom horizontal edge of all the longitudinal grid strips 502 to strengthen the overall structural strength of the basket and prevent the basket from expanding and deforming after the plate is inserted.

[0060] The seedling basket 500 is shaped like a truncated cone, wider at the top and narrower at the bottom, which makes it easy to stack empty baskets and reduces water flow resistance, while also facilitating twisting and swinging.

[0061] After the corrugated plate is inserted, the direction of the corrugations forms an oblique angle of 30° to 45° with the direction of the swirling flow in the groove, so that the crests and edges of the corrugations can effectively cut the rising bubbles and generate microbubbles to enhance the effect.

[0062] Working principle and complete cleaning process The core cleaning principle of this embodiment is "pulse vortex drive + symmetrical elastic energy storage and rebound + reciprocating torsional detachment + self-excited microbubble enhancement + layered synchronous sewage discharge + synchronous disinfection and sterilization". The complete working process is as follows: (1) Loading the entire basket: The seedling basket 500 filled with corrugated plates is hoisted as a whole to the top of the cleaning tank 100 using the existing lifting equipment. The hook 203 is hung on the cantilever frame 201 so that the seedling basket 500 is stably immersed in the water and suspended in the center. The two tension springs 301 are respectively attached to the lower corner hanging points on both sides of the seedling basket 500 to complete the loading. Clean seawater is injected into the tank to the designed liquid level, and the circulation filtration system is turned on.

[0063] (2) Forward torsional energy storage stage: The high-pressure gas source and ozone generator are started. The pneumatic timer reversing valve first connects the left arc-shaped gas distribution pipe 402. The airflow mixed with ozone is sprayed out obliquely upward in a clockwise direction through the jet nozzle 401, forming a clockwise spiral upward vortex in the tank. At the same time, the tangential water intake of the seawater inlet 103 flows in in the same direction, further strengthening the vortex intensity. The horizontal tangential thrust of the vortex acts on the side wall grid of the seedling basket 500, pushing the seedling basket 500 to rotate clockwise by 20°~30° around the vertical central axis. During this process, the tension spring 301 on the right side is stretched to store energy, and the spring on the left side is correspondingly relaxed.

[0064] Simultaneously, the spiraling airflow continuously washes over the surface of the corrugated sheet, loosening surface sludge and loose dirt. The crests and edges of the corrugated sheet continuously cut through the rising large air bubbles, breaking them into numerous micron-sized microbubbles. These microbubbles seep into the gaps between the sheets and the bottom of the corrugations, generating localized microjet streams upon collapse, initially peeling away the diatomaceous earth biofilm attached to the bottom of the valleys. As the airflow flows along the corrugated grooves, it generates a Venturi effect, causing a sudden increase in local flow velocity at the bottom of the valleys, further enhancing the flushing effect on the dirt. Ozone diffuses evenly with the water flow, continuously disinfecting and sterilizing the water and the surface of the sheets.

[0065] (3) Reverse rebound and detachment stage: After the set reversing cycle is reached, the pneumatic timed reversing valve automatically switches, disconnects the left arc-shaped air distribution pipe 402 and connects the right arc-shaped air distribution pipe 403, and the swirling flow in the groove instantly switches to the counterclockwise direction.

[0066] At this moment, the stretched right-side tension spring 301 quickly releases its elastic potential energy, causing the seedling basket 500 to swing back rapidly in a counterclockwise direction; at the same time, the counterclockwise vortex applies a reverse tangential thrust, which, together with the spring force, forms a resultant force, causing the seedling basket 500 to obtain instantaneous angular acceleration and produce a strong torsional swinging effect.

[0067] Under the instantaneous inertial centrifugal force, the loose dirt and biofilm on the surface of the corrugated plate, in the gaps between the plates, and in the bottom of the corrugations are thrown out along with the water, achieving deep stripping; at the same time, the reverse swirling flow washes the surface of the corrugated plate from the opposite direction, further stripping away the dirt in the dead corners that are difficult to reach by the forward water flow.

[0068] (4) Circulating cleaning: The airflow continuously and periodically changes direction, and the seedling basket 500 continuously rotates and swings back and forth at ±20°~30°; the corrugated plate alternately faces the airflow, and dirt from all angles can be effectively washed and shaken off. As the cleaning proceeds, the surface mud is removed first, and the stubborn dirt in the inner layer is gradually loosened and peeled off. Usually, a single basket can be thoroughly cleaned and disinfected in 3~5 minutes.

[0069] (5) Synchronous sewage discharge and water purification: During the cleaning process, the detached heavy sludge and large particles of dirt sink down along the tank wall and accumulate in the cone-shaped sedimentation zone 101. The sewage outlet 102 can be opened periodically to discharge them in a concentrated manner. Light biofilm debris and scum float to the liquid surface with the rising water flow, and flow over the sawtooth overflow weir with the water flow into the outlet. They are then intercepted by the circulating water into the filtration device. The middle layer of clean water is filtered and then flows tangentially from the seawater inlet 103 into the return tank, forming a continuous water circulation, keeping the water in the cleaning area clean at all times, and avoiding secondary adhesion of dirt.

[0070] (6) Whole basket discharge: After cleaning, turn off the gas source, ozone generator and circulation system, remove the tension spring 301, and use the lifting equipment to lift the whole basket of seedlings 500 out to drain. It can then be directly transported back to the seedling workshop for use without the need for individual sorting and additional disinfection.

[0071] Example 2: Enhanced cleaning equipment with added suspended cleaning media The main structure of this embodiment is exactly the same as that of embodiment 1. The difference is that the cleaning tank 100 is also filled with a number of suspended cleaning media to further enhance the mechanical grinding and turbulent flow effects. It is suitable for heavy-duty cleaning scenarios with thick dirt adhesion and stubborn biofilm.

[0072] Implementation parameters of suspended cleaning media The suspended cleaning medium uses food-grade PP hollow plastic balls, or short cylindrical particles, with a height-to-diameter ratio of 1:1 to 1.5:1. The overall density is controlled at 1.02 to 1.05 g / cm³ through the hollow structure, which is similar to the density of seawater. It can be uniformly suspended in the water and move synchronously with the swirling current, without floating on the surface or sinking to the bottom in large quantities.

[0073] The outer diameter of the suspended particles is 15~20mm, which is larger than the minimum gap between the corrugated plates by 8~12mm, ensuring that they will not get stuck in the gaps between the plates and the bottom of the corrugations, thus avoiding residual dirt and the growth of bacteria.

[0074] The filling volume should be 5% to 10% of the effective water volume of the cleaning tank. If the filling rate is too high, it will consume the swirling kinetic energy, weaken the torsion amplitude of the basket, and reduce the main cleaning effect.

[0075] Efficiency Enhancement Working Principle During the cleaning process, the suspended cleaning medium undergoes irregular motion with the swirling flow and the reciprocating swaying of the basket, enhancing cleaning through a triple action: First, there is the micro-collision grinding effect: the particles continuously collide and scrape the surface of the corrugated plate, directly acting on areas where the pure fluid scouring force is insufficient, such as the bottom of the corrugations and the gaps between the plates, forming a mechanical grinding and peeling effect on stubborn diatom biofilm, which can improve the overall cleaning efficiency by more than 30%.

[0076] Secondly, the secondary breakup of bubbles: During the movement of particles, they continuously cut and collide with rising bubbles, further breaking large bubbles into finer micro-nano bubbles, increasing the micro-jet action points, and enhancing the deep cleaning effect at the bottom of the valley.

[0077] Thirdly, the turbulent flow effect: the irregular movement of particles breaks the laminar flow state of the swirling flow, increases the intensity of water turbulence, eliminates the cleaning blind spots with low flow velocity between plates, and improves the uniformity of cleaning the entire basket.

[0078] The remaining structure and working process are exactly the same as in Example 1. This example can achieve a significant improvement in cleaning effect by adding low-cost media, and is suitable for cleaning needs in heavy-duty scenarios.

[0079] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention; any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A corrugated plate cleaning device for sea cucumber farming, characterized in that, include: The cleaning tank (100) is used to hold cleaning water. The upper suspension assembly (200) flexibly connects to the upper end of the seedling basket (500) with the full-wave pattern plate, without restricting the circumferential rotation of the seedling basket (500) or the vertical displacement of the seedling basket (500); A pull-down assembly (300) is elastically connected to the lower end of the seedling basket (500), allowing the seedling basket (500) to float in the water within the cleaning tank (100). The pull-down assembly (300) includes two symmetrically arranged plastic-coated stainless steel tension springs (301) or food-grade seawater-resistant rubber bands. The two tension springs (301) or rubber bands are respectively obliquely arranged on both sides of the lower part of the seedling basket (500). The upper end of the tension springs (301) or rubber bands is attached to the lower corner of the side wall of the seedling basket (500), and the lower end is attached to the lower part of the inner wall of the cleaning tank (100). Under normal conditions, both tension springs (301) or rubber bands are in a slightly stretched state, keeping the seedling basket (500) in a centered position. A tangential air distribution assembly (400) is arranged along the inner wall of the cleaning tank (100) and includes multiple sets of air jet nozzles (401). The air jet nozzles (401) are arranged tangentially along the circumference of the tank. The tangential air distribution assembly (400) includes a left arc-shaped air distribution pipe (402) and a right arc-shaped air distribution pipe (403) arranged symmetrically on the left and right sides. The two sets of air distribution pipes are attached to the lower part of the inner wall of the cleaning tank (100). The air jet nozzles (401) on the two sets of air distribution pipes have opposite tangential directions, corresponding to clockwise swirling and counterclockwise swirling respectively. The axis of the air jet nozzles (401) is at an elevation angle of 20°~30° with the horizontal plane, and the airflow has both horizontal tangential thrust and upward lifting force. The pulse reversing air path assembly is located outside the cleaning tank (100) and connected to the air path of the tangential air distribution assembly (400). It is used to periodically and alternately output reverse airflow. The ejected airflow forms a horizontal vortex in the water, which pushes the seedling basket to twist around the vertical central axis on one side. At the same time, the pull-down assembly (300) stretches and stores energy synchronously. When the vortex reverses, the pull-down assembly (300) releases elastic potential energy, which, together with the thrust of the reverse vortex, drives the seedling basket to swing back quickly, forming a reciprocating twisting and swinging motion to shake off the dirt attached to the surface of the corrugated plate.

2. The corrugated plate cleaning equipment for sea cucumber farming according to claim 1, characterized in that: The pulse reversing air circuit assembly includes a high-pressure air source and a pneumatic timed reversing valve. The air inlet of the pneumatic timed reversing valve is connected to the high-pressure air source, and the two air outlets are respectively connected to the left arc-shaped air distribution pipe (402) and the right arc-shaped air distribution pipe (403). The periodic automatic switching of the swirl direction is achieved by alternately connecting the two sets of air distribution pipes at timed intervals.

3. The corrugated plate cleaning equipment for sea cucumber farming according to claim 2, characterized in that: An ozone generator is connected in series in the air path of the pulse reversing air path assembly, which is used to simultaneously disinfect and sterilize the water and corrugated plate during the cleaning process.

4. The corrugated plate cleaning equipment for sea cucumber farming according to claim 1, characterized in that: The upper suspension assembly (200) includes a cantilever bracket (201), a hook (203), and four suspension ropes (202). The cantilever bracket (201) is fixedly mounted on one side of the top of the cleaning tank (100). The hook (203) is attached to the cantilever end of the cantilever bracket (201). The upper ends of the four suspension ropes (202) are connected to the hook (203), and the lower ends are respectively connected to the four corners of the top of the seedling basket (500), so that the seedling basket (500) is kept in a horizontal and centered suspended state.

5. The corrugated plate cleaning equipment for sea cucumber farming according to claim 1, characterized in that: The bottom of the cleaning tank (100) is provided with a conical sedimentation zone (101), and the bottom end of the conical sedimentation zone (101) is provided with a drain outlet (102) for intermittent discharge of deposited heavy dirt; the lower side wall of the cleaning tank (100) is provided with a seawater inlet (103), and the upper side wall is provided with an overflow circulation integrated outlet (104); the lower part of the overflow circulation integrated outlet (104) is a pumping section, and the upper part is a sawtooth overflow weir, which are respectively connected to the return water end and the inlet end of the filter device to form a seawater circulation filter circuit, so as to realize water circulation purification and scum overflow discharge simultaneously.

6. The corrugated plate cleaning equipment for sea cucumber farming according to claim 5, characterized in that: The seawater inlet (103) is tangentially arranged along the inner wall of the cleaning tank (100), and the water flow direction is consistent with the swirling direction on the same side, which is used to help enhance the swirling effect in the tank.

7. The corrugated plate cleaning equipment for sea cucumber farming according to claim 1, characterized in that: The cleaning tank (100) is also filled with a number of suspended cleaning media. The density of the suspended cleaning media is similar to that of the cleaning water and can move synchronously with the swirling flow. The suspended cleaning media are food-grade hollow plastic balls or short cylindrical particles with an outer diameter larger than the minimum gap between the corrugated plates.

8. A seedling basket (500) adapted to the corrugated plate cleaning equipment for sea cucumber farming according to any one of claims 1-7, characterized in that: It includes a top frame (501), multiple vertical grid strips (502), and two horizontal wrapping strips (503); The projection of the top frame (501) is rectangular, with a width greater than or equal to the width of the corrugated plate and a length greater than or equal to the sum of the thickness of the multiple corrugated plates and the gaps between them. The multiple longitudinal grid bars (502) are U-shaped with a larger top and a smaller bottom. The upper end is fixed to the long side of the top frame (501) at equal intervals. Two adjacent longitudinal grid bars (502) form a corrugated plate insertion groove. The corrugated plate is vertically inserted into the insertion groove from the top frame (501) and fixed. A uniform water passage gap is left between adjacent corrugated plates. The two horizontal strips (503) are U-shaped with the top being larger than the bottom. The upper end is fixedly connected to the short side of the top frame (501) at equal intervals, and the bottom horizontal side is fixedly connected to the bottom horizontal side of all the longitudinal strips (502).

9. The seedling basket according to claim 8, characterized in that: The spacing between two adjacent longitudinal grid bars (502) matches the wave height of the corrugated plate. After the corrugated plate is inserted, the direction of the corrugations forms an oblique angle with the swirling direction in the groove, so that the crest edges of the corrugations can cut the rising bubbles to generate microbubbles, thereby enhancing the cleaning effect of the valley bottom.

10. The seedling basket according to claim 8, characterized in that: The top frame (501) is equipped with a hanging ring structure at the four corners, which can be connected to the hook (203) by the hanging rope (202) for easy hanging to the cleaning tank or seedling pond; the corners of the two outermost longitudinal grid bars (502) of the seedling basket are convenient for hanging tension springs (301) or rubber bands.

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