Procambarus clarkii multi-station ultrasonic-assisted cleaning and bacteria reduction integrated production line

Abstract

The present application is suitable for small lobster cleaning technical field, provide small lobster multi-station ultrasonic wave auxiliary cleaning bacteria reduction integrated production line, including small lobster cleaning conveying part, small lobster cleaning conveying part includes cleaning conveying belt including a plurality of unit transmission cleaning box; Unit transmission cleaning box includes sealing net cover and cleaning net box body, sealing net cover contains cleaning net A and cleaning net box body contains cleaning net B adopt the same structure, cleaning net A is composed of a plurality of cleaning rods; The cleaning rod includes a cleaning rod body and a plurality of bristles, the cleaning rod body is internally provided with a liquid guide cavity A, the bristles are internally provided with a liquid guide cavity B, and a plurality of liquid outlets are formed in the bristles; After the periodic introduction of cleaning fluid with different speeds into the liquid guide cavity A, the soft bristles will swing during the discharge of the cleaning fluid with different speeds through the liquid guide cavity B and the liquid outlet, and the small lobsters are accurately cleaned; The damage rate of the small lobsters is reduced as much as possible, and the processing quality of the small lobsters is improved.

Description

Technical Field

[0001] This invention relates to the field of crayfish cleaning technology, and in particular to an integrated production line for multi-station ultrasonic-assisted cleaning and sterilization of crayfish. Background Technology

[0002] Crayfish are an important freshwater economic shrimp species in my country, widely popular among consumers for their delicious meat and rich nutrition. However, crayfish are omnivorous, feeding on aquatic plants, algae, aquatic insects, and animal carcasses, and primarily inhabit mudflats, swamps, shallow rice paddies, and ponds. Due to their living habits and growing environment, crayfish easily accumulate large amounts of mud, algae, and other impurities on their bodies, and their gills and body folds become breeding grounds for microorganisms (including various bacteria and parasites). Related studies have shown that untreated crayfish initially carry a high bacterial load. Therefore, thoroughly cleaning and sterilizing crayfish before consumption or further processing is an indispensable key step in ensuring food safety and improving product quality.

[0003] To address the challenges and inefficiencies of cleaning crayfish, various cleaning and sterilization technologies have been developed in recent years. Traditional manual scrubbing methods are extremely inefficient and inconsistent in their cleaning standards. Against this backdrop, ultrasonic cleaning technology, due to its high efficiency and ability to reach all surfaces, has been introduced into the crayfish processing industry. Its principle utilizes the "cavitation effect" generated by ultrasound in liquids; high-frequency sound waves create numerous tiny bubbles in the liquid, and the shock waves generated when these bubbles burst effectively remove dirt from the surface. Furthermore, to further improve food safety, sterilization technologies are often combined with cleaning processes. For example, some studies have used ultrasound in conjunction with slightly acidic electrolyzed water for live purification of crayfish, significantly reducing the total bacterial count. Patents also disclose the use of ultrasound-assisted cleaning agents, which can reduce the initial bacterial load of crayfish by 3-4 logarithms. These technologies provide an important technological foundation for the automated and large-scale cleaning and sterilization of crayfish.

[0004] Despite advancements in cleaning efficiency and sterilization effects, existing technologies still have many shortcomings in practical applications, particularly the physical damage caused to crayfish during the cleaning process. Many cleaning devices still rely on mechanical rotation, agitation, or strong water flow to agitate the crayfish. During this process, a large number of crayfish collide and squeeze each other, and their claws and other appendages are easily separated from their bodies under stress. The loss of claws not only affects the commercial value of the crayfish as a whole product but may also lead to energy loss, reduced mobility, and increased susceptibility to disease. Although some patents, such as "A Fully Automatic Crayfish Cleaning Machine Based on Ultrasonic Technology" (application number 202210155747.9), have made some improvements in cleaning technology, their disclosed solution involves driving multiple sets of cleaning belts to rotate, causing adjacent belts rotating in opposite directions to clamp the crayfish in the middle and subject them to "reciprocating rolling friction" to remove dirt. This wide-ranging, relative rolling friction cleaning method poses a high risk of limb breakage, as the crayfish's slender claws can easily get caught or trapped between the nearby cleaning zones when they struggle and are disturbed. Therefore, developing a new cleaning device that can efficiently clean and reduce bacteria while minimizing crayfish limb damage has become a pressing technical challenge in this field. Summary of the Invention

[0005] The purpose of this invention is to provide an integrated production line for multi-station ultrasonic-assisted cleaning and sterilization of crayfish, aiming to solve the problems in the background art.

[0006] Specifically: A multi-station ultrasonic-assisted cleaning and sterilization integrated production line for crayfish includes a crayfish cleaning conveyor. The crayfish cleaning conveyor is equipped with several ultrasonic cleaning boxes and several cleaning and sterilization boxes. A material cabinet is installed at one end of the crayfish cleaning conveyor for loading and unloading materials. The ultrasonic cleaning boxes and cleaning and sterilization boxes are used for ultrasonic cleaning and sterilization of the crayfish. The crayfish cleaning conveyor is used for conveying and cleaning the crayfish. The crayfish cleaning conveyor includes a shell and a cleaning conveyor belt movably installed inside the shell. The cleaning conveyor belt includes several interconnected unit conveying cleaning boxes. Each unit conveying cleaning box includes a sealing mesh cover and a cleaning mesh box body. The boxes are assembled together by rotation. The cleaning net box is used to hold crayfish, and the sealing net cover is used to seal the cleaning net box. The sealing net cover contains cleaning net A, and the cleaning net box contains cleaning net B. Cleaning net A and cleaning net B have the same structure. Cleaning net A is composed of several cleaning rods. Each cleaning rod includes a cleaning rod body and several bristles distributed on the cleaning rod body. The cleaning rod body has a liquid guiding cavity A, and the bristles have a liquid guiding cavity B. Liquid guiding cavities A and B are interconnected, and the bristles have several liquid outlets. After cleaning liquid at different speeds is periodically introduced into liquid guiding cavity A, the cleaning liquid at different speeds will cause the soft bristles to swing as it is discharged through liquid guiding cavity B and liquid outlets, thus precisely cleaning the crayfish.

[0007] In a preferred embodiment, the crayfish cleaning conveyor has a water storage tank and a wastewater tank at the bottom of the shell at the lower end of the cleaning conveyor belt. The water storage tank is used to hold the cleaning liquid, and the wastewater tank is used to hold the wastewater after cleaning the crayfish. The unit conveying cleaning box also includes a cleaning liquid adjusting component, which is assembled at the end of the cleaning net box body. The cleaning liquid adjusting component is used to draw the cleaning liquid from the water storage tank and provide the cleaning liquid to the sealing net cover and the cleaning net box body.

[0008] The cleaning fluid regulating device includes a cleaning fluid regulating tank, inside which is installed a water pump with adjustable flow rate. Two delivery pipes are connected to the water pump, one of which is connected to the sealing mesh cover to provide cleaning fluid to the sealing mesh cover, and the other is connected to the cleaning mesh box to provide cleaning fluid to the cleaning mesh box. A suction pipe is installed at the bottom of the cleaning fluid regulating tank, and a suction head is installed at its end, which is placed inside the water storage tank.

[0009] In a preferred embodiment, the sealing mesh cover further includes an outer fixing frame, which is rotatably assembled onto the cleaning mesh box body via several hinges; the cleaning mesh A is assembled inside the outer fixing frame; a limit lock is provided at the end of the outer fixing frame away from the hinges, which is used to unlockably limit the sealing mesh cover and the cleaning mesh box body together.

[0010] In a preferred embodiment, the cleaning net box further includes a front baffle, a support plate, and two side baffles, which are arranged in parallel and distributed on both sides of the cleaning net B; the support plate is located at the end of the cleaning net B; the front baffle, the cleaning net B, the support plate, and the two side baffles form a trough with a one-way opening.

[0011] The cleaning mesh box also includes two connecting plates A and two telescopic connectors. The two connecting plates A are located on one side of the cleaning mesh box, and the two telescopic connectors are located on the other side of the cleaning mesh box. Two adjacent unit conveying cleaning boxes are connected by connecting plates A and telescopic connectors.

[0012] The telescopic connector includes an elastic telescopic rod. One end of the elastic telescopic rod is rotatably mounted on a connecting plate B via a hinge A. The connecting plate B is integrally fixed to the front baffle. A steering groove is provided on the inner side of the front baffle of the connecting plate B. The other end of the elastic telescopic rod is rotatably mounted on a mounting plate via a hinge B. The mounting plate is detachably mounted on the connecting plate A of the adjacent unit's conveyor cleaning box via bolts. The side wall of the elastic telescopic rod is rotatably mounted on a chain via a pivot. The chain is powered by a sprocket and transmitted to a motor. The motor drives the cleaning conveyor belt to move via the chain and sprocket.

[0013] The hinge body A and hinge body B adopt the same structure. Hinge body A includes a U-shaped plate and a rotating plate. The rotating plate is rotatably assembled on the U-shaped plate through a positioning post. The elastic telescopic rod includes an outer tube and an inner rod. The inner rod is movably inserted inside the outer tube. A spring is installed inside the outer tube and the spring is connected to the end of the inner rod.

[0014] In a preferred embodiment, the cleaning rod can be replaced with a flexible cleaning rod, which includes an inlet pipe A and an inlet pipe B, both made of rigid material. Each inlet pipe A and inlet pipe B is independently equipped with a solenoid valve. Inlet pipe A is inserted and fixed inside inlet pipe B. A plurality of flexible airbags are sequentially fitted around the outside of inlet pipe B, and these flexible airbags are connected together and arranged in an array along inlet pipe B, with each flexible airbag operating independently. Inlet pipe A provides cleaning fluid to the odd-numbered flexible airbags via a conduit. The conduit passes through inlet pipe B but is not connected to it. Inlet pipe B provides cleaning fluid to the even-numbered flexible airbags.

[0015] The unit flexible airbag includes an airbag body with a cavity inside. The surface of the airbag body is provided with a number of flexible protrusions, which are arranged in an array on the airbag body. The surface of the airbag body is also provided with a number of bristles, and the bristles are provided with a liquid guiding cavity B. The cavity and the liquid guiding cavity B are interconnected, and the bristles are provided with a number of liquid outlets.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. After the crayfish are laid flat inside the cleaning net box, the cleaning net box is sealed by the sealing net cover. This limits the contact area between the sealing net cover and the cleaning net box after the crayfish are laid flat inside. This increases the contact area between the crayfish and the cleaning net A contained in the sealing net cover, as well as the cleaning net B contained in the cleaning net box. This is beneficial for cooperating with the ultrasonic cleaning and sterilization cleaning of the ultrasonic cleaning box, improving the cleaning effect and efficiency. At the same time, it also avoids the crayfish from stacking, colliding and squeezing with each other, which would cause the claws and other appendages to easily separate from the body after being subjected to force.

[0018] After periodically introducing cleaning fluid at different speeds into the liquid guiding chamber A of the cleaning rod, the cleaning fluid at different speeds will cause the soft bristles to swing as it is discharged through the liquid guiding chamber B on the bristles and the outlet. The swinging bristles will clean the crayfish. Combined with the cleaning fluid sprayed from the outlet, the bristles covering the bottom of the crayfish will swing in a small range without damaging the crayfish. Then, the sprayed cleaning fluid will clean the crayfish and wash away impurities. Furthermore, since the crayfish between the flat limiting sealing net cover and the cleaning net box will move synchronously with the cleaning net box, the crayfish will be relatively stationary with the cleaning net box. The soft bristles will swing in a small range but will clean the crayfish all around, thereby minimizing the damage rate of the crayfish and improving the processing quality of the crayfish.

[0019] 2. By laying each crayfish flat and confining it between the sealed net cover and the cleaning net box, each crayfish maintains an independent and relatively fixed posture throughout the cleaning process. This avoids the claw hooking and collision squeezing caused by crayfish stacking and rolling together in traditional cleaning equipment. At the same time, the flat laying and confining structure creates a uniform and controllable contact surface between the crayfish and cleaning nets A and B. This contact surface not only provides a stable and repeatable acoustic coupling interface for the subsequent energy transmission of ultrasonic cavitation effect (avoiding the disordered absorption and attenuation of ultrasonic energy by multiple layers of crayfish in a stacked state), but also creates spatial conditions for uniform contact between the sterilizing liquid in the cleaning sterilization box and the crayfish's body surface. This allows the superimposed effect of ultrasonic cleaning and the chemical action of the sterilizing liquid to act on each crayfish synchronously and evenly, achieving a dual improvement in cleaning efficiency and sterilization rate.

[0020] 3. While serving as a structural support for the cleaning net, the cleaning rod also incorporates two internal liquid guiding chambers, A and B, forming a dual-function integrated channel for cleaning fluid delivery and power conversion. This means that as the cleaning fluid exits from the outlet on the bristles, it achieves targeted spraying and simultaneously drives the active oscillation of the soft bristles through the fluid pulsation energy generated by the periodic variable-speed flow. This cleaning method, which uses the cleaning fluid's own flow energy to drive the bristle oscillation, completely eliminates the need for additional power mechanisms (such as motor-driven rotating brush rollers) in traditional cleaning equipment. The technology that drives the movement of the bristles enables a small-area, high-frequency, low-amplitude gentle cleaning of the crayfish's body surface without the need for any external transmission components. At the same time, since the oscillation frequency and amplitude of the bristles are directly coupled with the flow rate of the cleaning solution, when the flow rate change cycle matches the frequency of the ultrasonic waves in the ultrasonic cleaning box, the mechanical oscillation of the bristles and the ultrasonic cavitation effect will resonate and superimpose, which will accelerate the removal of stubborn dirt attached to the folds and joint crevices of the crayfish's body surface under the dual physical action, greatly improving the cleaning depth and efficiency.

[0021] 4. Because the crayfish remain relatively stationary with respect to the cleaning net throughout the cleaning process, the periodically sprayed variable-speed cleaning fluid from the outlet drives the brush bristles to oscillate, simultaneously creating a dynamic and controllable micro-turbulent flow field inside the cleaning net. This micro-turbulent flow field allows the sprayed cleaning fluid to continuously flush away loosened dirt from the crayfish's surface and remove it promptly, preventing secondary pollution caused by repeated accumulation of dirt around the crayfish. Furthermore, the flexible fluid shear force generated by the micro-turbulent flow field, combined with the mechanical oscillation of the brush bristles, creates a three-dimensional cleaning field within the enclosed space formed by cleaning nets A and B. That is, the upper surface of the crayfish is cleaned from above... The brushes and sprays of washing net A cover the crayfish's surface, while the brushes and sprays of washing net B below cover the surface. The sides and gaps between the claws are cleaned by the cleaning liquid flowing in a micro-turbulent flow field. This cleaning mode, with simultaneous action from top to bottom and coordinated action of liquid flow and brushes, allows crayfish to be cleaned from all angles without turning or moving. At the same time, because the swaying amplitude of the brushes is precisely controlled within a small range by the flow rate of the cleaning liquid, large swaying is avoided from clamping or entanglement of the claws. Thus, while achieving efficient cleaning, the integrity of the crayfish's limbs is protected to the greatest extent. This is fundamentally different from the limb damage caused by the relative movement of crayfish in traditional equipment.

[0022] 5. Several interconnected unit conveyor cleaning boxes form a continuous and independent crayfish cleaning unit array on the cleaning conveyor belt. Each cleaning box is opened sequentially and crayfish are laid out flat when the material cabinet is loaded. They then pass through an ultrasonic cleaning box and a cleaning and sterilization box in sequence. This layout, combining intermittent stepping transmission with multi-station sequential processing, ensures that each unit conveyor cleaning box has the same dwell time in each station (ultrasonic cleaning box or cleaning and sterilization box), thus ensuring that each batch of crayfish receives the exact same ultrasonic cleaning duration and sterilization solution treatment time, achieving high uniformity in batch cleaning. More importantly, because the unit conveyor cleaning box has an independent sealed structure, the cleaning solution from the previous station will not mix with the cleaning solution when it moves between different ultrasonic cleaning boxes. The sterilization solution at the next station is cross-mixed, thus completely avoiding liquid crosstalk between the ultrasonic cleaning station and the sterilization cleaning station. This ensures both the stability of the ultrasonic cleaning parameters and the constant concentration of the sterilization solution. In addition, the material cabinet simultaneously performs loading and unloading functions at the same location. This ensures that when each cleaning net returns to the material cabinet after completing the entire cleaning process, the residual dirt from the previous cleaning has been completely removed during the ultrasonic cleaning and sterilization cleaning process, preventing secondary contamination of the next batch of crayfish to be cleaned. This systematic combination design of "loading and unloading at the same station + sequential processing at multiple stations + independent sealing of units" achieves the organic unity of cleaning, sterilization, and batch self-cleaning functions, greatly improving the consistency of cleaning quality and operational stability of the entire production line under continuous operation.

[0023] 6. Using inlet tube A, cleaning fluid is supplied to the odd-numbered flexible airbags among several unit flexible airbags via a conduit. The cleaning fluid first enters the cavity of the unit flexible airbag, inflating it (at this time, the speed at which the cleaning fluid is discharged from the bristles on the airbag is less than the speed at which it enters the airbag through the conduit); while the unit flexible airbags at even-numbered positions are not inflated with cleaning fluid; subsequently, the unit flexible airbags at odd-numbered positions stop being inflated with cleaning fluid, as the cleaning fluid is discharged from the bristles. The volume of each flexible air bladder decreases, while the even-numbered flexible air bladders begin to fill with cleaning fluid. The even-numbered flexible air bladders then inflate and expand. This alternating process allows the flexible cleaning rod to use several flexible air bladders to gently rub the crayfish in a small area while providing comprehensive cleaning. Combined with the oscillating brush bristles and the cleaning fluid sprayed from the outlet, this process ensures effective cleaning while minimizing damage to the crayfish and improving the processing quality.

[0024] 7. The double-layered nested structure of inlet tube A, which is inserted and fixed inside inlet tube B, allows two completely independent liquid supply pipeline systems to be integrated within a single flexible cleaning rod. These two pipeline systems serve the unit flexible airbags at odd and even positions, respectively. This structural design of "one cleaning rod, two independent pipelines, and two sets of alternating airbags" ensures that the cleaning fluid not only serves as a cleaning medium but also as a driving medium, enabling the periodic inflation and deflation of the airbags. More importantly, both inlet tube A and inlet tube B are made of rigid materials, a feature that... The flexible cleaning rod maintains sufficient rigidity in its overall structure to keep the mesh shape of the cleaning net A stable. At the same time, through several independent flexible airbags, it achieves flexible contact and deformation kneading in local areas. Thus, it achieves an organic unity of overall rigid support and local flexible action on the same cleaning rod. This ensures that the cleaning net A will not deform or collapse due to stress during long-term operation, and also avoids the hard structure from scratching or squeezing the surface of the crayfish. This is a structural and functional synergy effect that cannot be achieved simultaneously by a single rigid cleaning rod or a single flexible airbag structure.

[0025] 8. When the cavity of the unit flexible airbag is filled with cleaning fluid, the cleaning fluid first inflates the airbag. Because the discharge speed from the outlet on the bristles is less than the filling speed, the airbag will store a certain amount of cleaning fluid for a short time and remain in an inflated state. At this time, several flexible ridges on the surface of the airbag will protrude outward as the airbag expands, forming multiple points of contact with the crayfish's body surface. When the filling stops, the stored cleaning fluid is discharged through the fluid guiding cavity B inside the bristles and the outlet, and the airbag gradually contracts and returns to its original position. At the same time, the discharged cleaning fluid is directly sprayed onto the crayfish's body surface. This process of "first inflating and rubbing, then contracting and spraying" is called "inflating and rubbing, then contracting and spraying". The operating mode allows each unit of flexible airbag to simultaneously complete both mechanical kneading and liquid spraying actions within a single work cycle. The alternating liquid filling operation at odd and even positions creates an alternating cooperative relationship between adjacent airbags, with one airbag expanding and kneading while the other contracts and sprays cleaning liquid onto the crayfish. Then, the two roles are reversed, and this alternation is repeated, achieving seamless connection and cyclical alternation of kneading and spraying cleaning actions at the same workstation, which greatly improves the cleaning efficiency and uniformity of a single workstation.

[0026] 9. Because the crayfish remains relatively stationary within the cleaning net throughout the cleaning process, the flexible airbags on the flexible cleaning rod alternately fill with liquid in odd and even numbers, creating a localized but comprehensive rubbing motion around the crayfish. At this time, the brush's oscillating brushing and the spraying from the liquid outlet work synergistically. This mechanical flexible cleaning process, combined with the ultrasonic cavitation effect in the subsequent ultrasonic cleaning box, creates a graded cleaning synergy effect of "first mechanical loosening, then ultrasonic peeling." That is, the rubbing of the flexible airbags and the brushing of the bristles first loosen and peel off large particles of mud and sand and attached substances from the crayfish's surface. Subsequently, the shock waves generated by ultrasonic cavitation finely peel off stubborn dirt remaining in the folds, joint gaps, and base of the claws. Simultaneously, because the liquid outlets in the bristles continuously spray cleaning liquid during the rubbing process, this liquid... The ultrasonic waves generate more cavitation bubbles, which are more evenly distributed, further enhancing the cleaning effect of the ultrasonic waves. When the antibacterial solution in the cleaning and sterilization tank comes into contact with the crayfish after mechanical and ultrasonic cleaning, the effective components in the solution can more fully contact the crayfish's body surface and gills to exert their antibacterial effect because the dirt on the body surface has been largely removed. This five-fold synergistic effect of "flat laying and limiting to maintain relative stillness, flexible airbags alternating rubbing, brush spraying and simultaneous cleaning, ultrasonic cavitation peeling and full contact of antibacterial solution" allows the crayfish to complete the entire process from physical decontamination to ultrasonic fine cleaning and then to chemical sterilization without significant movement or turning. This achieves the optimal balance between maximizing the cleaning and sterilization effect and minimizing damage to the crayfish's limbs, greatly improving the processing quality of the crayfish. Attached Figure Description

[0027] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0028] Figure 1 This is a schematic diagram of the integrated production line for multi-station ultrasonic-assisted cleaning and sterilization of crayfish according to the present invention.

[0029] Figure 2 for Figure 1 Cross-sectional view of the crayfish cleaning conveyor;

[0030] Figure 3 for Figure 2 A schematic diagram of the structure of the cleaning box for the middle unit;

[0031] Figure 4 for Figure 3 A schematic diagram of the structure of the cleaning box after it has been flipped over in the middle unit;

[0032] Figure 5 for Figure 3 A schematic diagram of the structure of the middle unit's conveyor cleaning box after it has been opened;

[0033] Figure 6 for Figure 3 Schematic diagram of the structure of the central sealing mesh cover;

[0034] Figure 7 for Figure 3 A schematic diagram of the structure of the cleaning mesh box;

[0035] Figure 8 for Figure 7 Enlarged structural diagram at point A in the middle;

[0036] Figure 9 for Figure 3 A schematic diagram of the assembly structure of several unit conveying cleaning boxes;

[0037] Figure 10 This is a schematic diagram of the cleaning rod in one embodiment of the present invention;

[0038] Figure 11 for Figure 10 Enlarged structural diagram at point B;

[0039] Figure 12 for Figure 11 A demonstration image showing the bristles of the brush filled with cleaning fluid;

[0040] Figure 13 This is a schematic diagram of the flexible cleaning rod in another embodiment of the present invention;

[0041] Figure 14 for Figure 13 Enlarged structural diagram at point C;

[0042] Figure 15 for Figure 14 A schematic diagram of the structure of a flexible airbag in a medium-sized unit.

[0043] In the picture:

[0044] 100. Material cabinet; 110. Control panel; 120. Unloading box; 130. Loading box;

[0045] 200. Crayfish cleaning conveyor; 210. Cleaning conveyor belt; 220. Unit conveying cleaning box; 230. Sealing mesh cover; 231. Outer fixing frame; 232. Cleaning net A; 233. Limit lock; 240. Cleaning net box body; 241. Support plate; 242. Side baffle; 243. Connecting plate A; 244. Cleaning net B; 245. Telescopic connector; 246. Cleaning rod; 247. Flexible cleaning rod; 250. Cleaning fluid regulating component; 251. Liquid delivery pipe; 252. Cleaning... Liquid control box, 253, liquid suction pipe, 254, liquid suction head; 2451, connecting plate B, 2452, hinge body A, 2453, elastic telescopic rod, 2454, hinge body B, 2455, mounting plate, 2456, steering groove; 2461, cleaning rod body, 2462, brush bristles, 2463, liquid outlet; 2471, unit flexible airbag, 2472, liquid inlet pipe A, 2473, liquid inlet pipe B, 2474, cavity; 24711, airbag body, 24712, flexible protrusion;

[0046] 300. Ultrasonic cleaning box;

[0047] 400. Clean the sterilization chamber. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0049] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0050] Example 1

[0051] Please see Figure 1 This embodiment provides a multi-station ultrasonic-assisted cleaning and sterilization integrated production line for crayfish, mainly to solve the problem that many cleaning devices still rely on mechanical rotation, stirring, or strong water flow to agitate crayfish. During this process, a large number of crayfish collide and squeeze each other, and their claws and other appendages are easily separated from their bodies under stress. The loss of claws not only affects the commercial value of the crayfish as a whole product, but may also lead to energy loss, decreased mobility, and increased susceptibility to disease. The device includes a crayfish cleaning conveyor 200, which is equipped with several ultrasonic cleaning boxes 300 and several cleaning and sterilization boxes 400. A material cabinet 100 is installed at the end of the crayfish cleaning conveyor 200. The material cabinet 100 is used for loading and unloading materials into the crayfish cleaning conveyor 200. The ultrasonic cleaning boxes 300 and the cleaning and sterilization boxes 400 are used for ultrasonic cleaning and sterilization of the crayfish. The crayfish cleaning conveyor 200 is used for conveying and cleaning the crayfish.

[0052] Therefore, after the material cabinet 100 loads the crayfish cleaning conveyor 200, the crayfish cleaning conveyor 200 will intermittently move the crayfish after it is started, and they will enter several ultrasonic cleaning boxes 300 and several cleaning and sterilization boxes 400 in sequence. After the crayfish are ultrasonically cleaned and sterilized by the ultrasonic cleaning boxes 300 and the cleaning and sterilization boxes 400, they will be conveyed back to the material cabinet 100 by the crayfish cleaning conveyor 200, and then unloaded by the material cabinet 100.

[0053] Furthermore, a control panel 110 is installed at the front end of the material cabinet 100, and a feeding box 130 is installed on the material cabinet 100 below the control panel 110. The feeding box 130 is used to feed the crayfish cleaning conveyor 200. A discharging box 120 is installed on the material cabinet 100 on the side of the feeding box 130. The discharging box 120 is used to unload the crayfish cleaning conveyor 200.

[0054] It should be noted that the ultrasonic cleaning box 300 and the cleaning and sterilization box 400 are both existing technologies. Their detailed structures can be found in existing literature and journals, and they can also be purchased directly on the market, or assembled from parts purchased on the market, etc. They are not the technologies to be protected by this invention, and will not be described in detail here, nor are they shown in the accompanying drawings.

[0055] Please continue reading. Figures 2-5 and Figure 9 The crayfish cleaning conveyor 200 includes a shell and a cleaning conveyor belt 210 movably installed inside the shell (specifically, the shell has several notches, which correspond to several ultrasonic cleaning boxes 300 and several cleaning and sterilization boxes 400, and the shell communicates with the ultrasonic cleaning boxes 300 and the cleaning and sterilization boxes 400 through the notches). The cleaning conveyor belt 210 includes several interconnected unit conveying cleaning boxes 220; each unit conveying cleaning box 220 includes a sealing mesh cover 230 and a cleaning mesh box body 240, which are rotatably assembled together (specifically, the sealing mesh cover 230 can be flipped open on the cleaning mesh box body 240, see [reference]). Figure 5 The cleaning net box 240 is used to hold crayfish, and the sealing net cover 230 is used to seal the cleaning net box 240.

[0056] Therefore, during the intermittent transmission process of the crayfish cleaning conveyor belt 210 when the crayfish cleaning conveyor 200 starts, the sealing net cover 230 is flipped over and the cleaning net box 240 is opened. The cleaning net box 240 has an upward one-way opening. After the crayfish are laid flat inside the cleaning net box 240, the sealing net cover 230 is flipped over again to seal the cleaning net box 240. This achieves the goal of limiting the sealing net cover 230 and the cleaning net box 240 after the crayfish are laid flat inside the cleaning net box 240.

[0057] Please continue reading. Figure 6 , Figure 7 , Figures 10-12 The sealing mesh cover 230 includes a cleaning mesh A232, and the cleaning mesh box 240 includes a cleaning mesh B244. The cleaning mesh A232 and the cleaning mesh B244 adopt the same structure. The cleaning mesh A232 is composed of several cleaning rods 246.

[0058] It should be explained that the distribution of the cleaning rods 246 can be a side-by-side array with equal spacing, or a multi-row, multi-column array, etc. The specific arrangement is not limited, as long as it can be used to hold crayfish and drain the cleaning liquid and impurities. Here, the preferred distribution of the cleaning rods 246 is a side-by-side array with equal spacing.

[0059] The cleaning rod 246 includes a cleaning rod body 2461 and several bristles 2462 distributed on the cleaning rod body 2461. The cleaning rod body 2461 has a liquid guiding cavity A inside, and the bristles 2462 have a liquid guiding cavity B inside. The liquid guiding cavity A and the liquid guiding cavity B are interconnected. Several liquid outlets 2463 are opened on the bristles 2462. After cleaning liquid at different speeds is periodically introduced into the liquid guiding cavity A, the cleaning liquid at different speeds will drive the soft bristles 2462 to swing as it is discharged through the liquid guiding cavity B and the liquid outlets 2463, thus accurately cleaning the crayfish.

[0060] Therefore, after the crayfish are laid flat inside the cleaning net box 240, the cleaning net box 240 is sealed by the sealing net cover 230; this achieves the limitation between the sealing net cover 230 and the cleaning net box 240 after the crayfish are laid flat inside the cleaning net box 240; it increases the contact surface between the crayfish and the cleaning net A232 included in the sealing net cover 230 and the cleaning net B244 included in the cleaning net box 240, which is beneficial for cooperating with the ultrasonic cleaning of the ultrasonic cleaning box 300 and the sterilization cleaning of the cleaning sterilization box 400, improving the cleaning effect and efficiency, while also avoiding the crayfish from stacking, colliding and squeezing each other, causing the claws and other appendages to easily separate from the body after being subjected to force;

[0061] After periodically introducing cleaning fluid at different speeds into the liquid guiding chamber A of the cleaning rod 2461, the cleaning fluid at different speeds will cause the soft bristles 2462 to swing as it is discharged through the liquid guiding chamber B on the bristles 2462 and the liquid outlet 2463. The swinging bristles 2462 will clean the crayfish. Combined with the cleaning fluid sprayed from the liquid outlet 2463, the bristles 2462 covering the bottom of the crayfish will swing in a small range without damaging the crayfish. The sprayed cleaning fluid will then clean the crayfish and wash away impurities. Furthermore, since the crayfish between the flat limiting sealing net cover 230 and the cleaning net box 240 will move synchronously with the cleaning net box 240, the crayfish will remain relatively stationary with the cleaning net box 240. The soft bristles 2462 will swing in a small range but will clean the crayfish all around, thereby minimizing the damage rate of the crayfish and improving the processing quality of the crayfish.

[0062] In summary: By laying each crayfish flat and confining it between the sealing net cover 230 and the cleaning net box 240, each crayfish maintains an independent and relatively fixed posture throughout the cleaning process, avoiding the claw hooking and collision squeezing caused by crayfish stacking and rolling together in traditional cleaning equipment. At the same time, the flat laying and confining structure creates a uniform and controllable contact surface between the crayfish and the cleaning nets A232 and B244. This contact surface not only provides a stable and repeatable acoustic coupling interface for the subsequent energy transmission of ultrasonic cavitation effect (avoiding the disordered absorption and attenuation of ultrasonic energy by multiple layers of crayfish in the stacked state), but also creates spatial conditions for uniform contact between the sterilizing liquid in the cleaning sterilization box 400 and the crayfish surface. This allows the superimposed effect of ultrasonic cleaning and the chemical action of the sterilizing liquid to act synchronously and uniformly on each crayfish, achieving a dual improvement in cleaning efficiency and sterilization rate.

[0063] The cleaning rod 246, while serving as a structural support for the cleaning net, also incorporates two internal liquid guiding chambers, A and B, forming a dual-function integrated channel for cleaning fluid delivery and power conversion. This means that as the cleaning fluid exits from the outlet 2463 on the bristles 2462, it achieves targeted spraying and simultaneously drives the active oscillation of the soft bristles 2462 through the fluid pulsation energy generated by the periodic variable-speed flow. This cleaning method, which uses the flow energy of the cleaning fluid itself to drive the bristle oscillation, completely eliminates the need for additional power mechanisms (such as motor-driven rotation) required in traditional cleaning equipment. The technology of using a brush roller to drive the movement of the bristles achieves flexible cleaning of the crayfish's body surface in a small area, with high frequency and low amplitude, without the need to add any external transmission components. At the same time, since the oscillation frequency and amplitude of the bristles 2462 are directly coupled with the change in the flow rate of the cleaning liquid, when the flow rate change cycle matches the frequency of the ultrasonic waves in the ultrasonic cleaning box 300, the mechanical oscillation of the bristles and the ultrasonic cavitation effect will resonate and superimpose, which will accelerate the removal of stubborn dirt attached to the folds and joint crevices of the crayfish's body surface under the dual physical action, greatly improving the cleaning depth and efficiency.

[0064] Because the crayfish remain relatively stationary with respect to the cleaning net box 240 throughout the cleaning process, the periodically sprayed variable-speed cleaning fluid from the outlet 2463 drives the brush bristles 2462 to oscillate, simultaneously creating a dynamic and controllable micro-turbulent flow field inside the cleaning net box 240. This micro-turbulent flow field, on the one hand, allows the sprayed cleaning fluid to continuously flush away the loosened dirt on the crayfish's surface and remove it in time, preventing secondary pollution caused by repeated accumulation of dirt around the crayfish; on the other hand, the flexible fluid shear force generated by the micro-turbulent flow field, combined with the mechanical oscillation of the brush bristles 2462, forms a three-dimensional cleaning field within the enclosed space formed by the cleaning nets A232 and B244; that is, the crayfish's upper... The surface is covered by the brush and spray action of the upper cleaning net A232, the lower surface is covered by the brush and spray action of the lower cleaning net B244, and the sides and gaps between the claws are cleaned by the cleaning liquid flowing in the micro-turbulent flow field. This cleaning mode of simultaneous action from top to bottom and coordinated action of liquid flow and brush bristles allows crayfish to be cleaned in all directions without turning or moving. At the same time, because the swing amplitude of the brush bristles 2462 is precisely controlled within a small range by the flow rate of the cleaning liquid, large swings are avoided from clamping or entanglement of the claws. Thus, while achieving efficient cleaning, the integrity of the crayfish's limbs is protected to the greatest extent. This is fundamentally different from the limb damage caused by the relative movement of crayfish in traditional equipment.

[0065] Several interconnected unit conveyor cleaning boxes 220 form a continuous and independent crayfish cleaning unit array on the cleaning conveyor belt 210. Each cleaning net box 240 is opened sequentially and crayfish are laid out flat when the material cabinet 100 is loaded. The crayfish then pass through the ultrasonic cleaning box 300 and the cleaning and sterilization box 400 in sequence. This layout, combining intermittent stepping drive with multi-station sequential processing, ensures that each unit conveyor cleaning box 220 has the same dwell time at each station (ultrasonic cleaning box 300 or cleaning and sterilization box 400), thereby ensuring that each batch of crayfish receives the exact same ultrasonic cleaning duration and sterilization solution treatment time, achieving a high degree of uniformity in batch cleaning. More importantly, because the unit conveyor cleaning box 220 has an independent sealed structure, its movement between different ultrasonic cleaning boxes 300... The cleaning solution from the previous station will not cross-mix with the sterilization solution from the next station, thus completely avoiding liquid crosstalk between the ultrasonic cleaning station and the sterilization cleaning station. This ensures both the stability of the ultrasonic cleaning parameters and the constant concentration of the sterilization solution. In addition, the material cabinet 100 simultaneously performs loading and unloading functions at the same location. This ensures that when each cleaning net box 240 returns to the material cabinet 100 after completing the entire cleaning process, the residual dirt from the previous cleaning has been completely removed during the ultrasonic cleaning and sterilization cleaning processes, preventing secondary contamination of the next batch of crayfish to be cleaned. This systematic combination design of "loading and unloading at the same station + sequential processing at multiple stations + independent sealing of units" achieves the organic unity of cleaning, sterilization, and batch self-cleaning functions, significantly improving the consistency of cleaning quality and operational stability of the entire production line under continuous operation.

[0066] Example 2

[0067] This embodiment is based on Embodiment 1 and further specifies the crayfish cleaning conveyor 200.

[0068] Please see Figures 2-4 The crayfish cleaning conveyor 200 has a water storage tank and a wastewater tank at the bottom of the shell at the lower end of the cleaning conveyor belt 210. The water storage tank is used to hold the cleaning liquid, and the wastewater tank is used to hold the wastewater after the crayfish are cleaned.

[0069] The unit conveying cleaning box 220 also includes a cleaning fluid adjusting component 250, which is assembled at the end of the cleaning mesh box body 240. The cleaning fluid adjusting component 250 is used to draw cleaning fluid from the water storage tank and provide cleaning fluid to the sealing mesh cover 230 and the cleaning mesh box body 240.

[0070] For further details, please refer to Figure 4The cleaning fluid regulating component 250 includes a cleaning fluid regulating tank 252, inside which a water pump is installed. The water pump is a water pump with adjustable flow rate. Two liquid delivery pipes 251 are connected to the water pump. One liquid delivery pipe 251 is connected to the sealing mesh cover 230 to provide cleaning fluid to the sealing mesh cover 230, and the other liquid delivery pipe 251 is connected to the cleaning mesh box body 240 to provide cleaning fluid to the cleaning mesh box body 240 (specifically, the liquid guiding cavity A of the cleaning rod body 2461 is connected to the liquid delivery pipe 251).

[0071] It should be noted that the water pump and its power supply wiring method are existing technologies. Their detailed structures can be found in existing literature and journals, and they can also be purchased directly on the market, or components can be purchased on the market to assemble them, etc. They are not what this invention is meant to protect, and will not be described in detail here, nor are they shown in the accompanying drawings.

[0072] A suction pipe 253 is installed at the bottom of the cleaning fluid adjustment tank 252. A suction head 254 is installed at the end of the suction pipe 253. The suction head 254 is placed inside the water storage tank (during the cleaning conveyor belt 210 moves several unit conveying cleaning boxes 220, the cleaning fluid adjustment component 250 can move along the water storage tank using the suction head 254).

[0073] Therefore, during the process of the cleaning conveyor belt 210 driving several unit conveying cleaning boxes 220 to move, the cleaning fluid adjusting component 250 can move along the water storage tank using the liquid extraction head 254, ensuring that the liquid extraction head 254 is always inside the water storage tank. After the water pump with adjustable flow rate is started, the cleaning fluid inside the water storage tank can be drawn into the liquid extraction pipe 253 and sent into the sealing mesh cover 230 and the cleaning mesh box body 240 by the two liquid delivery pipes 251.

[0074] Please see Figure 3 , Figure 4 and Figure 6 The sealing mesh cover 230 also includes an outer fixing frame 231, which is rotatably mounted on the cleaning mesh box body 240 via several hinges; the cleaning mesh A232 is mounted inside the outer fixing frame 231.

[0075] A limit lock 233 is provided at the end of the outer fixed frame 231 away from the hinge. The limit lock 233 is used to lock the sealing mesh cover 230 and the cleaning mesh box body 240 together in an unlockable manner.

[0076] Please see Figure 7The cleaning net box 240 also includes a front baffle, a support plate 241, and two side baffles 242. The two side baffles 242 are distributed in parallel and are located on both sides of the cleaning net B244. The support plate 241 is located at the end of the cleaning net B244. The front baffle, the cleaning net B244, the support plate 241, and the two side baffles 242 form a trough with a one-way opening.

[0077] Please see Figure 3 , Figures 7-9 The cleaning mesh box 240 also includes two connecting plates A243 and two telescopic connectors 245. The two connecting plates A243 are located on one side of the cleaning mesh box 240, and the two telescopic connectors 245 are located on the other side of the cleaning mesh box 240. The two adjacent unit conveying cleaning boxes 220 are connected by the connecting plates A243 and the telescopic connectors 245.

[0078] Please see Figures 7-9 The telescopic connector 245 includes an elastic telescopic rod 2453. One end of the elastic telescopic rod 2453 is rotatably mounted on a connecting plate B2451 via a hinge A2452. The connecting plate B2451 is integrally fixed to the front baffle. A steering groove 2456 is provided on the front baffle on the inner side of the connecting plate B2451. The other end of the elastic telescopic rod 2453 is rotatably mounted on a mounting plate 2455 via a hinge B2454. The mounting plate 2455 is detachably mounted on the connecting plate A243 of the adjacent unit conveying cleaning box 220 via bolts. The side wall of the elastic telescopic rod 2453 is rotatably mounted on a chain via a rotating shaft. The chain is powered by a sprocket and driven by a motor. The motor drives the cleaning conveyor belt 210 to move via the chain and sprocket.

[0079] It should be noted that the motor, chain, and sprocket are all existing technologies, and their detailed structures can be found in existing literature and journals. They can also be purchased directly from the market, or assembled from parts purchased from the market. They are not the subject of this invention and will not be described in detail here, nor are they shown in the accompanying drawings.

[0080] Please see Figures 7-9 The hinge body A2452 and hinge body B2454 adopt the same structure. The hinge body A2452 includes a U-shaped plate and a rotating plate. The rotating plate is rotatably assembled on the U-shaped plate through a positioning post.

[0081] The elastic telescopic rod 2453 includes an outer tube and an inner rod. The inner rod is movably inserted inside the outer tube. A spring is installed inside the outer tube and is connected to the end of the inner rod.

[0082] Example 3

[0083] This embodiment is another embodiment of the cleaning rod 246 of Embodiment 1.

[0084] Please see Figures 13-15 The cleaning rod 246 can be replaced with a flexible cleaning rod 247. The flexible cleaning rod 247 includes an inlet pipe A2472 and an inlet pipe B2473. Both inlet pipes A2472 and B2473 are made of rigid materials. Both inlet pipes A2472 and B2473 are independently equipped with solenoid valves. The inlet pipe A2472 is inserted and fixed inside the inlet pipe B2473. Several flexible airbags 2471 are sequentially sleeved on the outside of the inlet pipe B2473. The flexible airbags 2471 are sequentially connected together and arranged in an array along the inlet pipe B2473. The flexible airbags 2471 are independent of each other.

[0085] The inlet tube A2472 provides cleaning fluid to the odd-numbered flexible airbags 2471 among a plurality of flexible airbags 2471 via a conduit; the conduit passes through the inlet tube B2473 but is not connected to the inlet tube B2473; the inlet tube B2473 provides cleaning fluid to the even-numbered flexible airbags 2471 among a plurality of flexible airbags 2471.

[0086] For further details, please refer to Figure 14 and Figure 15 The unit flexible airbag 2471 includes an airbag body 24711, with a cavity 2474 reserved inside the airbag body 24711. The surface of the airbag body 24711 is provided with a plurality of flexible protrusions 24712, which are arranged in an array on the airbag body 24711. The surface of the airbag body 24711 is also provided with a plurality of bristles 2462, and a liquid guiding cavity B is opened inside the bristles 2462. The cavity 2474 and the liquid guiding cavity B are interconnected. A plurality of liquid outlets 2463 are opened on the bristles 2462.

[0087] Therefore, using the inlet pipe A2472, cleaning fluid is supplied to the odd-numbered flexible airbags 2471 among a plurality of flexible airbags 2471 via a conduit. The cleaning fluid first enters the cavity 2474 of the flexible airbag 2471, inflating the airbag body 24711 (at this time, the speed at which the cleaning fluid is discharged from the bristles 2462 on the airbag body 24711 is less than the speed at which it enters the airbag body 24711 through the conduit); while the flexible airbags 2471 in even-numbered positions are not filled with cleaning fluid; thereafter, the flexible airbags 2471 in odd-numbered positions stop being filled with cleaning fluid, because the bristles 2462 on the airbag body 24711... 62. When the cleaning fluid is discharged, the volume of the unit flexible air bladder 2471 in odd-numbered positions decreases, while the volume of the unit flexible air bladder 2471 in even-numbered positions begins to increase as the cleaning fluid is filled in. This operation is repeated alternately to achieve the goal of the flexible cleaning rod 247 using several unit flexible air bladders 2471 to rub the crayfish in a small area while covering the crayfish all around for cleaning. Combined with the oscillating brush bristles 2462 to brush the crayfish and the cleaning fluid sprayed from the outlet 2463, the cleaning effect is ensured while reducing the damage rate of the crayfish and improving the processing quality of the crayfish.

[0088] In summary: The double-layered nested structure of the inlet tube A2472, which is inserted and fixed inside the inlet tube B2473, allows two completely independent liquid supply pipeline systems to be integrated within a single flexible cleaning rod 247. These two pipeline systems serve the unit flexible airbags 2471 at odd and even positions, respectively. This structural design of "one cleaning rod, two independent pipelines, and two sets of alternating airbags" ensures that the cleaning fluid not only serves as a cleaning medium but also as a driving medium, enabling the periodic inflation and deflation of the airbags 24711. More importantly, both inlet tubes A2472 and B2473 are made of rigid materials. The material's properties allow the flexible cleaning rod 247 to maintain sufficient rigidity in its overall structure to ensure the stability of the mesh shape of the cleaning net A232. At the same time, through several independent flexible airbags 2471, flexible contact and deformation kneading are achieved locally. This achieves an organic unity of overall rigid support and local flexible action on the same cleaning rod, ensuring that the cleaning net A232 will not deform or collapse due to stress during long-term operation, and avoiding scratches or compression of the crayfish's body surface by the rigid structure. This is a structural and functional synergy that cannot be achieved simultaneously by a single rigid cleaning rod or a single flexible airbag structure.

[0089] When the cavity 2474 of the unit flexible airbag 2471 is filled with cleaning fluid, the cleaning fluid first inflates the airbag 24711. Because the discharge speed of the liquid outlet 2463 on the bristles 2462 is less than the filling speed, the airbag 24711 will store a certain amount of cleaning fluid for a short time and remain in an inflated state. At this time, several flexible protrusions 24712 on the surface of the airbag 24711 will bulge outward as the airbag 24711 expands, forming multiple points of contact with the crayfish's body surface. When the filling stops, the stored cleaning fluid is discharged through the liquid guiding cavity B inside the bristles 2462 and the liquid outlet 2463. The airbag 24711 gradually contracts and returns to its original position, while the discharged cleaning fluid is directly sprayed onto the crayfish. On the body surface; this working mode of "first inflating and kneading, then contracting and spraying liquid" allows each unit of flexible airbag 2471 to simultaneously complete the two actions of mechanical kneading and liquid spraying within a single working cycle. The alternating liquid filling operation at odd and even positions creates an alternating cooperative relationship of "one inflating and kneading, one contracting and spraying" between adjacent airbags. When the airbag at the odd position inflates, it performs local kneading on the crayfish, while the airbag at the even position contracts and sprays cleaning liquid onto the crayfish. Then the two roles are reversed, and this alternation is repeated, achieving seamless connection and cyclical alternation of kneading and spraying cleaning actions at the same work station, greatly improving the cleaning efficiency and cleaning uniformity of a single work station.

[0090] Because the crayfish remains relatively stationary with respect to the cleaning net box 240 throughout the cleaning process, the flexible air bladders 2471 on the flexible cleaning rod 247 alternately fill with liquid in odd and even numbers, creating a localized but all-round rubbing motion around the crayfish. At this time, the oscillating brushing of the bristles 2462 and the spraying cleaning from the liquid outlet 2463 work synergistically. This mechanical flexible cleaning process, together with the ultrasonic cavitation effect in the subsequent ultrasonic cleaning box 300, forms a graded cleaning synergistic effect of "first mechanical loosening, then ultrasonic peeling". That is, the rubbing of the flexible air bladders 2471 and the brushing of the bristles 2462 first loosen and peel off large particles of mud and sand and attached substances on the surface of the crayfish. Then, the shock waves generated by ultrasonic cavitation finely peel off stubborn dirt remaining in the folds, joint gaps and base of the claws. At the same time, due to the rubbing of the liquid outlet 2463 in the bristles 2462, the crayfish is cleaned by the oscillating brush. During the process, cleaning fluid is continuously sprayed out. Under the action of ultrasound, these fluids generate more cavitation bubbles, which are more evenly distributed, further enhancing the cleaning effect of ultrasound. When the sterilizing fluid in the cleaning and sterilization chamber 400 comes into contact with the crayfish after mechanical and ultrasonic cleaning, the effective components in the sterilizing fluid can come into more thorough contact with the crayfish's body surface and gills and exert a sterilization effect because the dirt on the body surface has been largely removed. This five-fold synergistic effect of "flat laying and limiting to maintain relative stillness, flexible airbags alternating rubbing, brush spraying and simultaneous cleaning, ultrasonic cavitation peeling and full contact of sterilizing fluid" allows the crayfish to complete the entire process from physical decontamination to ultrasonic fine cleaning and then to chemical sterilization without large-scale movement or turning. It achieves the optimal balance between maximizing the cleaning and sterilization effect and minimizing damage to the crayfish's limbs, greatly improving the processing quality of crayfish.

[0091] In the description of this invention, unless otherwise stated, "a number" means two or more. It should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0092] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A multi-station ultrasonic-assisted cleaning and sterilization integrated production line for crayfish, comprising a crayfish cleaning conveyor (200), wherein the crayfish cleaning conveyor (200) is equipped with several ultrasonic cleaning boxes (300) and several cleaning and sterilization boxes (400), and a material cabinet (100) is installed at the end of the crayfish cleaning conveyor (200). The material cabinet (100) is used for loading and unloading materials into the crayfish cleaning conveyor (200). The ultrasonic cleaning boxes (300) and the cleaning and sterilization boxes (400) are used for ultrasonic cleaning and sterilization cleaning of crayfish. The crayfish cleaning conveyor (200) is used for conveying and cleaning crayfish; characterized in that, The crayfish cleaning conveyor (200) includes a housing and a cleaning conveyor belt (210) movably installed inside the housing. The cleaning conveyor belt (210) includes several interconnected unit conveying cleaning boxes (220). The unit conveying cleaning box (220) includes a sealing mesh cover (230) and a cleaning mesh box body (240). The sealing mesh cover (230) and the cleaning mesh box body (240) are rotatably assembled together. The cleaning mesh box body (240) is used to hold crayfish, and the sealing mesh cover (230) is used to seal the cleaning mesh box body (240). The sealing mesh cover (230) includes a cleaning mesh A (232), and the cleaning mesh box body (240) includes a cleaning mesh B (244). The cleaning mesh A (232) and the cleaning mesh B (244) adopt the same structure. The cleaning mesh A (232) is composed of several cleaning rods (246). The cleaning rod (246) includes a cleaning rod body (2461) and several bristles (2462) distributed on the cleaning rod body (2461). The cleaning rod body (2461) has a liquid guiding cavity A inside, and the bristles (2462) have a liquid guiding cavity B inside. The liquid guiding cavity A and the liquid guiding cavity B are interconnected. Several liquid outlets (2463) are opened on the bristles (2462). After the cleaning liquid at different speeds is periodically introduced into the liquid guiding cavity A, the cleaning liquid at different speeds will drive the soft bristles (2462) to swing during the discharge process through the liquid guiding cavity B and the liquid outlets (2463), thus accurately cleaning the crayfish.

2. The integrated production line for multi-station ultrasonic-assisted cleaning and sterilization of crayfish according to claim 1, characterized in that, The crayfish cleaning conveyor (200) has a water storage tank and a wastewater tank at the bottom of the shell at the lower end of the cleaning conveyor belt (210). The water storage tank is used to hold the cleaning liquid, and the wastewater tank is used to hold the wastewater after the crayfish are cleaned. The unit transfer cleaning box (220) also includes a cleaning fluid adjusting component (250), which is assembled at the end of the cleaning mesh box body (240); the cleaning fluid adjusting component (250) is used to draw cleaning fluid from inside the water storage tank and to provide cleaning fluid to the sealing mesh cover (230) and the cleaning mesh box body (240).

3. The integrated production line for multi-station ultrasonic-assisted cleaning and sterilization of crayfish according to claim 2, characterized in that, The cleaning fluid regulating component (250) includes a cleaning fluid regulating tank (252), which is equipped with a water pump. The water pump is a water pump with adjustable flow rate. Two liquid delivery pipes (251) are connected to the water pump. One liquid delivery pipe (251) is connected to the sealing mesh cover (230) to provide cleaning fluid to the sealing mesh cover (230), and the other liquid delivery pipe (251) is connected to the cleaning mesh box body (240) to provide cleaning fluid to the cleaning mesh box body (240). A suction pipe (253) is installed at the bottom of the cleaning fluid adjustment tank (252). A suction head (254) is installed at the end of the suction pipe (253) and is placed inside the water storage tank.

4. The integrated production line for multi-station ultrasonic-assisted cleaning and sterilization of crayfish according to claim 1, characterized in that, The sealing mesh cover (230) also includes an outer fixing frame (231), which is rotatably mounted on the cleaning mesh box body (240) via several hinges; the cleaning mesh A (232) is mounted inside the outer fixing frame (231); A limit lock (233) is provided at the end of the outer fixed frame (231) away from the hinge. The limit lock (233) is used to lock the sealing mesh cover (230) and the cleaning mesh box body (240) together in an unlockable manner.

5. The integrated production line for multi-station ultrasonic-assisted cleaning and sterilization of crayfish according to claim 4, characterized in that, The cleaning net box body (240) also includes a front baffle, a support plate (241) and two side baffles (242). The two side baffles (242) are distributed in parallel and are located on both sides of the cleaning net B (244). The support plate (241) is located at the end of the cleaning net B (244). The front baffle, the cleaning net B (244), the support plate (241) and the two side baffles (242) form a trough with a one-way opening.

6. The integrated production line for multi-station ultrasonic-assisted cleaning and sterilization of crayfish according to claim 5, characterized in that, The cleaning mesh box body (240) also includes two connecting plates A (243) and two telescopic connectors (245). The two connecting plates A (243) are located on one side of the cleaning mesh box body (240), and the two telescopic connectors (245) are located on the other side of the cleaning mesh box body (240). Two adjacent unit conveying cleaning boxes (220) are connected by connecting plates A (243) and telescopic connectors (245).

7. The integrated production line for multi-station ultrasonic-assisted cleaning and sterilization of crayfish according to claim 6, characterized in that, The telescopic connector (245) includes an elastic telescopic rod (2453). One end of the elastic telescopic rod (2453) is rotatably mounted on the connecting plate B (2451) via a hinge body A (2452). The connecting plate B (2451) is integrally fixed on the front baffle. A steering groove (2456) is provided on the front baffle inside the connecting plate B (2451). The other end of the elastic telescopic rod (2453) is rotatably mounted on the mounting plate (2455) via a hinge body B (2454). The mounting plate (2455) is detachably mounted on the connecting plate A (243) of the adjacent unit conveying cleaning box (220) via bolts. The side wall of the elastic telescopic rod (2453) is rotatably mounted on the chain via a rotating shaft. The chain is powered by a sprocket and driven by a motor. The motor drives the cleaning conveyor belt (210) to move via the chain and sprocket.

8. The integrated production line for multi-station ultrasonic-assisted cleaning and sterilization of crayfish according to claim 7, characterized in that, The hinge body A (2452) and hinge body B (2454) adopt the same structure. The hinge body A (2452) includes a U-shaped plate and a rotating plate. The rotating plate is rotatably assembled on the U-shaped plate through a positioning post. The elastic telescopic rod (2453) includes an outer tube and an inner rod. The inner rod is movably inserted inside the outer tube. A spring is installed inside the outer tube and is connected to the end of the inner rod.

9. The integrated production line for multi-station ultrasonic-assisted cleaning and sterilization of crayfish according to any one of claims 1-8, characterized in that, The cleaning rod (246) can be replaced by a flexible cleaning rod (247). The flexible cleaning rod (247) includes an inlet pipe A (2472) and an inlet pipe B (2473). Both the inlet pipe A (2472) and the inlet pipe B (2473) are made of rigid materials. Both the inlet pipe A (2472) and the inlet pipe B (2473) are independently equipped with solenoid valves. The inlet pipe A (2472) is inserted and fixed inside the inlet pipe B (2473). Several unit flexible airbags (2471) are sequentially sleeved on the outside of the inlet pipe B (2473). The several unit flexible airbags (2471) are sequentially connected together and arrayed along the inlet pipe B (2473). The several unit flexible airbags (2471) are independent of each other. The inlet tube A (2472) provides cleaning fluid to the odd-numbered flexible airbags (2471) among a plurality of flexible airbags (2471) via a conduit; the conduit passes through the inlet tube B (2473) but is not connected to the inlet tube B (2473); the inlet tube B (2473) provides cleaning fluid to the even-numbered flexible airbags (2471) among a plurality of flexible airbags (2471).

10. The integrated production line for multi-station ultrasonic-assisted cleaning and sterilization of crayfish according to claim 9, characterized in that, The unit flexible airbag (2471) includes an airbag body (24711), an internal cavity (2474) of the airbag body (24711), and a number of flexible protrusions (24712) arranged on the surface of the airbag body (24711). The number of flexible protrusions (24712) are arranged in an array on the airbag body (24711). The surface of the airbag body (24711) is also provided with a number of bristles (2462). A liquid guiding cavity B is opened inside the bristles (2462). The cavity (2474) and the liquid guiding cavity B are interconnected. A number of liquid outlets (2463) are opened on the bristles (2462).

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