An animal cage disinfecting and cleaning system applied to a biosafety laboratory

Abstract

The application is an animal cage disinfecting and cleaning system applied to a biosafety laboratory, comprising a cage negative pressure cabinet system, a cage electric lifting transfer vehicle, a cage double-station cleaning system, a disinfectant solution preparation system, a sewage treatment system and a central control system; the cage double-station cleaning system comprises a soaking disinfecting and cleaning station and a rinsing station, each of the soaking disinfecting and cleaning station and the rinsing station is provided with a set of sewage treatment system, each of the soaking disinfecting and cleaning station and the rinsing station is connected with the disinfectant solution preparation system, and the cage negative pressure cabinet system, the cage double-station cleaning system, the disinfectant solution preparation system and the sewage treatment system are connected with the central control system. The application can clean and disinfect the cages in the biosafety laboratory, reduces the safety risk caused by the contaminated objects entering and leaving the laboratory, greatly reduces the labor intensity of the staff, reduces the infection risk of the staff in actual operation, and effectively ensures the safety of the biosafety laboratory.

Description

Technical Field

[0001] This invention relates to the field of biosafety laboratory equipment maintenance technology, and in particular to a disinfection and cleaning system for animal cages used in biosafety laboratories. Background Technology

[0002] The P3 (ABSL-3) laboratory is the core facility for conducting experiments involving highly pathogenic microorganisms, and the negative pressure monkey cage is a key piece of equipment for housing infectious laboratory monkeys. The negative pressure monkey cage confines pathogenic microorganisms within an isolated space using a negative pressure environment. However, the excrement and secretions of laboratory monkeys easily adhere to the inner walls, crevices, and removable parts of the cages. If cleaning is not thorough, residual pathogens may spread through aerosols or cause cross-infection through cage reuse. The quality of cage cleaning directly affects the prevention and control of pathogen leakage risks, the health of laboratory animals, and the reliability of experimental data.

[0003] Currently, there are no specific standards in China for cleaning negative pressure monkey cages in P3 laboratories. The operating procedures vary among laboratories, and some institutions have problems such as incomplete cleaning, non-standard disinfection procedures, and insufficient prevention and control of aerosol leaks, resulting in prominent potential biosafety hazards.

[0004] The standard procedure is as follows: operators must wear level 2 biosafety protective clothing, gas masks, puncture-resistant gloves, and non-slip shoe covers, and enter the cleaning area after passing through an air shower; neutral detergent and glutaraldehyde compound solution or 500mg / L chlorine-containing disinfectant are used for manual cleaning with soft brushes, high-pressure spray guns, etc.; after disassembling the cage parts, visible excrement and food residue are removed first, and then the gaps are scraped.

[0005] Because negative pressure monkey cages are large and heavy (up to 50 kg per cage), the above operations require at least two researchers. High-pressure washing within the rearing area requires a large space and easily generates a large amount of aerosols; high-temperature sterilization followed by transferring the cages out of the rearing area for cleaning can easily lead to unnecessary contamination. Even with high-temperature sterilization, manual cleaning is still difficult to completely remove residual feces, and multiple studies have shown that pathogenic microorganisms can still be detected in uncleaned residual feces, posing a safety hazard.

[0006] Therefore, there is an urgent need for an automated system that can disinfect and clean monkey cages within the animal husbandry area to reduce the labor intensity and infection risk of personnel and improve the cleaning effect. Summary of the Invention

[0007] The present invention aims to address the shortcomings of the prior art by providing an animal cage disinfection and cleaning system for use in biosafety laboratories.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A disinfection and cleaning system for animal cages used in biosafety laboratories includes an electric lifting and transfer cart for cages, a dual-station cage cleaning system, a disinfectant preparation system, a wastewater treatment system, and a central control system.

[0010] The cage dual-station cleaning system includes an immersion disinfection cleaning station and a rinsing station. Both the immersion disinfection cleaning station and the rinsing station are equipped with a wastewater treatment system. Both the immersion disinfection cleaning station and the rinsing station are connected to the disinfectant preparation system. The cage dual-station cleaning system, the disinfectant preparation system, and the wastewater treatment system are all connected to the central control system.

[0011] The cage dual-station cleaning system includes an immersion disinfection cleaning tank and a rinsing tank. Both the immersion disinfection cleaning tank and the rinsing tank are equipped with a lifting cylinder frame at the rear. The lifting cylinder frame contains a lifting cylinder, and the piston rod of the lifting cylinder is connected to an L-shaped bracket. The L-shaped bracket is located directly above the corresponding immersion disinfection cleaning tank or rinsing tank. Several rollers are symmetrically installed on the front and rear sides of the upper surface of the L-shaped bracket. The cage to be cleaned is placed on one of the rollers of the L-shaped bracket. The front upper part of the immersion disinfection cleaning tank and the rinsing tank is equipped with a cage translation component.

[0012] The cage translation assembly includes a guide rail fixed to the front of the soaking disinfection and cleaning tank and the rinsing tank. A lever bracket and a movable bracket are slidably installed on the guide rail. A lever is installed on the lever bracket, and the lever is located on one side of one of the L-shaped brackets. A first translation cylinder is installed on the movable bracket, and the piston rod end of the first translation cylinder is connected to the lever bracket. A second translation cylinder is fixed to the front of the rinsing tank, and the piston rod end of the second translation cylinder is connected to the movable bracket. Dustproof covers are installed on the outside of the guide rail, lever bracket, movable bracket, first translation cylinder, and second translation cylinder.

[0013] The L-shaped bracket has a cover plate installed on the upper part, and the bottom of the cover plate is equipped with a sealing strip.

[0014] The rinsing tank is equipped with several compressed air nozzles, which are connected to external compressed air pipelines.

[0015] The immersion disinfection and cleaning pool and the rinsing pool are equipped with exhaust vents on the upper rear side. The exhaust vents are connected to the filter box through exhaust pipes, and the filter box is equipped with an exhaust fan.

[0016] The immersion disinfection and cleaning tank is equipped with an ultrasonic generator.

[0017] The disinfectant preparation system includes a disinfectant concentrate tank and a disinfectant preparation tank. The disinfectant concentrate tank is connected to the disinfectant preparation tank via a metering diaphragm pump and pipeline. The disinfectant preparation tank is equipped with a stirring motor, which is connected to a stirring shaft located inside the disinfectant preparation tank. The stirring shaft is equipped with stirring blades. The disinfectant preparation tank is connected to a cage dual-station cleaning system via a delivery pump and pipeline.

[0018] The wastewater treatment system includes two sets of two-stage wastewater treatment units. Each set of two-stage wastewater treatment units includes a stainless steel bag filter. The inlet of the stainless steel bag filter is connected to the drain outlet of the cage dual-station cleaning system through a diaphragm pump. The outlet of the stainless steel bag filter is connected to the circulation return water inlet and the drain pipe of the cage dual-station cleaning system, respectively. The stainless steel bag filter is also connected to a backwash filter.

[0019] The central control system consists of a host computer, a communication module, and a PLC. The host computer is connected to the PLC through the communication module.

[0020] The beneficial effects of this invention are: this invention can clean and disinfect cages in biosafety laboratories, reducing the safety risks caused by contaminants entering and leaving the laboratory, greatly reducing the labor intensity of staff, and also reducing the risk of infection for staff during actual operation, effectively ensuring the safety of biosafety laboratories. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention in one direction;

[0022] Figure 2 This is a schematic diagram of the structure from another direction of the present invention;

[0023] Figure 3 This is a schematic diagram of the cage translation component in this invention;

[0024] In the diagram: 1-Cage negative pressure cabinet system; 2-Cage electric lifting and transfer cart; 3-Cage dual-station cleaning system; 31-Immersion disinfection and cleaning tank; 32-Rinsing tank; 33-Lifting cylinder frame; 34-L-shaped bracket; 35-Roller; 36-Guide rail; 37-Toggle lever bracket; 38-Moving bracket; 39-Toggle lever; 310-First translation cylinder; 311-Second translation cylinder; 312-Cover plate; 313-Exhaust pipe; 314-Filter box; 315-Dustproof cover; 4-Disinfectant solution preparation system; 41-Disinfectant concentrate tank; 42-Disinfectant solution preparation tank; 43-Metering diaphragm pump; 44-Agitator motor; 5-Sewage treatment system; 51-Stainless steel bag filter; 52-Diaphragm pump; 53-Backwash filter; 6-Central control system; 61-Host computer; 7-Cage;

[0025] The following will describe in detail, with reference to the accompanying drawings, embodiments of the present invention. Detailed Implementation

[0026] The principles and features of the present invention are described below with reference to the accompanying drawings. The embodiments given are for illustrative purposes only and are not intended to limit the scope of the invention. The invention is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0029] like Figures 1-3 As shown, an animal cage disinfection and cleaning system for use in a biosafety laboratory includes an electric cage lifting and transfer cart 2, a dual-station cage cleaning system 3, a disinfectant preparation system 4, a wastewater treatment system 5, and a central control system 6. The dual-station cage cleaning system 3, the disinfectant preparation system 4, and the wastewater treatment system 5 are all connected to the central control system 6, which controls and records data uniformly.

[0030] The central control system 6 consists of a host computer 61, a communication module, and a PLC. The host computer 61 is connected to the PLC via the communication module. The host computer uses a 2.4G 30M 16C 1700PI9-12900 processor 16G industrial machine, running Windows 11 Enterprise Edition LTSC operating system. The communication module uses a network switch and a Xunrao S7 configuration gateway. The PLC can be a commonly used model on the market, such as the Siemens S71500, and can record information such as cage number 7, cleaning time, operator, disinfectant type and concentration, and test results, establishing a ledger for easy problem traceability.

[0031] The cage dual-station cleaning system 3, disinfectant preparation system 4, and sewage treatment system 5 are all connected to the PLC of the hollow system 6 via communication.

[0032] When cleaning a single cage 7, it must be removed from the cage negative pressure cabinet system 1. Each cage 7 weighs 50KG. To reduce labor intensity, an electric forklift, namely the cage electric lifting and transfer vehicle 2, is used as the transfer tool.

[0033] The electric lifting and transfer trolley for cages is made of 304 stainless steel, with a DC servo motor and stainless steel lead screw as the lifting device. The height of the forks can be accurately controlled by a limit switch. Mechanical positioning and limit devices are installed on the forks to effectively ensure the insertion depth. A fork insertion depth position sensor is installed. When the forks are inserted into the insertion hole of the cage 7, a positioning signal is given. The locking mechanism on the forks can lock the locking device installed on the cage 7, which can effectively ensure the stability and reliability of the cage 7 during the transfer process. The cage 7 is removed by manually operating the forklift and moved to the starting position of the cage dual-station cleaning system 3.

[0034] The cage dual-station cleaning system 3 includes an immersion disinfection cleaning station and a rinsing station. Both the immersion disinfection cleaning station and the rinsing station are equipped with a wastewater treatment system 5. Both the immersion disinfection cleaning station and the rinsing station are connected to the disinfectant preparation system 4. The cage dual-station cleaning system 3, the disinfectant preparation system 4, and the wastewater treatment system 5 are all connected to the central control system 6.

[0035] The cage dual-station cleaning system 3 is made of high-quality 316L stainless steel, including an immersion disinfection cleaning station 31 and a rinsing station 32.

[0036] The soaking disinfection and cleaning tank 31 is a soaking disinfection and cleaning station. Different types of disinfectant can be injected into this station as needed. Soaking softens animal feces, allowing the disinfectant to fully penetrate the crevices and ensure thorough disinfection. The soaking disinfection and cleaning tank 31 is equipped with an ultrasonic generator, providing ultrasonic cleaning functionality. Using medium-frequency ultrasound, it can thoroughly clean crevices. A work cycle of soaking-ultrasonic cleaning-soaking-again ultrasonic cleaning ensures high-quality cleaning with no residue, while simultaneously breaking down the feces for thorough disinfection.

[0037] Rinse tank 32 is a rinsing station that can clean residual disinfectant and a small amount of residual dirt from the surface of cage 7. This station uses a spray rinsing method, with spray nozzles evenly distributed around the perimeter and bottom of the tank. Heated and softened water is sprayed out by a high-pressure pump for all-around cleaning. After cleaning, compressed air nozzles are installed inside to blow and dry the surface. The compressed air nozzles are connected to external compressed air pipelines.

[0038] The rear side of the soaking disinfection and cleaning pool 31 and the rinsing pool 32 are equipped with lifting cylinder frames 33. Lifting cylinders are installed in the lifting cylinder frames 33, and the piston rods of the lifting cylinders are connected to L-shaped brackets 34. The L-shaped brackets 34 are located directly above the corresponding soaking disinfection and cleaning pool 31 or rinsing pool 32. Several rollers 35 are symmetrically installed on the front and rear sides of the upper surface of the L-shaped brackets 34. The cage 7 to be cleaned is placed on one of the rollers 35 of the L-shaped bracket 34. The lifting cylinder drives the L-shaped bracket 34 to rise and fall along the lifting track, thereby driving the cage 7 to rise or fall.

[0039] A cover plate 312 is installed on the upper part of the L-shaped bracket 34, and a sealing strip is provided at the bottom of the cover plate 312. When the L-shaped bracket 34 is lowered, the cover plate 312 can seal the cleaning tank opening. The sealing strip at the bottom of the cover plate 312 can ensure a certain degree of airtightness and prevent water vapor aerosol evaporation.

[0040] A cage translation assembly is installed on the upper front side of the soaking disinfection and cleaning tank 31 and the rinsing tank 32. The cage translation assembly includes a guide rail 36 fixed to the front side of the soaking disinfection and cleaning tank 31 and the rinsing tank 32. A lever bracket 37 and a moving bracket 38 are slidably installed on the guide rail 36. A lever 39 is installed on the lever bracket 37 and is located on one side of one of the L-shaped brackets 34. A first translation cylinder 310 is installed on the moving bracket 38. The piston rod end of the first translation cylinder 310 is connected to the lever bracket 37. A second translation cylinder 311 is fixed to the front side of the rinsing tank 32. The piston rod end of the second translation cylinder 311 is connected to the moving bracket 38. Dustproof covers 315 are installed on the outside of the guide rail 36, lever bracket 37, moving bracket 38, first translation cylinder 310, and second translation cylinder 311.

[0041] The cage translation component can drive the lever 39 to push the cage 7 from the soaking disinfection and cleaning pool 31 to the rinsing pool 32, completing the change of work station.

[0042] The soaking disinfection and cleaning tank 31 and the rinsing tank 32 are both controlled by PLC of the central control system 6. The soaking disinfection, cleaning and rinsing time and temperature can be adjusted and controlled as needed.

[0043] To prevent the spread of aerosols generated by water mist during the cleaning machine's operation, exhaust vents are provided on the upper rear side of the immersion disinfection cleaning tank 31 and the rinsing tank 32. These exhaust vents are connected to a filter box 314 via an exhaust pipe 313, and the filter box 314 is equipped with an exhaust fan. Aerosols generated during cleaning are purified by the filter box 314.

[0044] The disinfectant preparation system 4 includes a disinfectant concentrate tank 41 and a disinfectant preparation tank 42. The disinfectant concentrate tank 41 is connected to the disinfectant preparation tank 42 via a metering diaphragm pump 43 and a pipeline. A stirring motor 44 is installed on the disinfectant preparation tank 42, and the stirring motor 44 is connected to a stirring shaft. The stirring shaft is located inside the disinfectant preparation tank 42 and is equipped with stirring blades. The disinfectant preparation tank 42 is connected to the cage dual-station cleaning system 3 via a delivery pump and a pipeline.

[0045] The disinfectant preparation system 4 can prepare different concentrations of disinfectant solution according to needs. It can add the drug quantitatively according to the original concentration, prepare the solution, stir it evenly, and output it to the soaking disinfection and cleaning tank 31 and the rinsing tank 32. It has the communication function of the central control system 6 and displays the operation status of the solution and the system.

[0046] The wastewater treatment system 5 includes two sets of two-stage wastewater treatment units. Each set of two-stage wastewater treatment units includes a stainless steel bag filter 51. The inlet of the stainless steel bag filter 51 is connected to the discharge port of the cage dual-station cleaning system 3 via a diaphragm pump 52. The outlet of the stainless steel bag filter 51 is connected to the circulation return port and the discharge pipe of the cage dual-station cleaning system 3, respectively. The stainless steel bag filter 51 is also connected to a backwash filter 53. Wastewater is pumped into the stainless steel bag filter 51 by the diaphragm pump 52, which can circulate and filter disinfectant and discharge waste liquid. In addition, it also has a backwash filter 53, which can rinse and filter the previous stage filter. Specific Implementation Example 1:

[0048] This embodiment takes the disinfection and cleaning of a negative pressure monkey cage in an ABSL-3 laboratory as an example.

[0049] Before the experiment began, the experimental monkeys were transferred to the backup cage negative pressure cabinet system 1. The operator selected the cleaning program through the host computer 61 of the central control system 6 and set parameters such as the type of disinfectant (e.g., 500mg / L chlorine-containing disinfectant), soaking time (15 minutes), ultrasonic cleaning time (5 minutes), and rinsing water temperature (45℃).

[0050] The disinfectant preparation system 4 operates automatically: the original solution in the disinfectant stock solution tank 41 is quantitatively delivered to the disinfectant preparation tank 42 by the metering diaphragm pump 43, and purified water is injected at the same time to control the ratio. After the stirring motor 44 drives the stirring blade to stir evenly, the disinfectant is injected into the soaking disinfection and cleaning tank 31 by the delivery pump.

[0051] The operator uses the electric lifting and transfer cart 2 to remove the negative pressure monkey cage, weighing approximately 50 kg, from the negative pressure cage cabinet system 1. The operator moves the negative pressure monkey cage to the starting position of the dual-station cage cleaning system 3 and places it on the rollers 35 of the L-shaped bracket 34 above the immersion disinfection cleaning tank 31.

[0052] The lifting cylinder inside the lifting cylinder frame 33 lowers the L-shaped support 34, completely immersing the negative pressure monkey cage in the disinfectant solution of the immersion disinfection and cleaning tank 31. Simultaneously, the cover plate 312 seals the tank opening, and the sealing strip ensures airtightness. The exhaust fan starts, creating a localized slight negative pressure within the tank through the exhaust pipe 313 and the filter box 314 to prevent aerosol leakage. After 15 minutes of immersion disinfection, the ultrasonic generator is activated, using medium-frequency ultrasonic cleaning for 5 minutes to remove dirt from crevices. This is followed by another 5 minutes of immersion and ultrasonic cleaning, and then another 5 minutes of ultrasonic cleaning. After completing the immersion disinfection and cleaning, the lifting cylinder raises the L-shaped support 34, exposing the negative pressure monkey cage above the liquid surface.

[0053] The second translation cylinder 311 drives the moving bracket 38 to move along the guide rail 36, and the first translation cylinder 310 drives the lever bracket 37 to make the lever 39 contact one side of the negative pressure monkey cage. The second translation cylinder 311 and the first translation cylinder 310 work together to move the negative pressure monkey cage from the L-shaped bracket 34 above the soaking disinfection and cleaning pool 31 to the L-shaped bracket 34 above the rinsing pool 32.

[0054] Inside the rinsing tank 32, the L-shaped support 34 descends again, and the cover 312 closes. A high-pressure pump heats softened water to 45°C and sprays it through nozzles around the tank and at the bottom, performing a full-range high-pressure rinse of the negative pressure monkey cage for 3 minutes. After rinsing, the L-shaped support 34 rises, and compressed air nozzles blow and dry the surface of the negative pressure monkey cage for 2 minutes.

[0055] During the cleaning process, the wastewater treatment systems 5 at the two workstations operate independently. Each workstation's diaphragm pump 52 pumps wastewater into the inlet of the stainless steel bag filter 51, filtering out feces and solid residue. The purified liquid can be either returned to the cleaning tank for recycling or directly discharged into the sewage pipe as needed. The backwash filter 53 periodically backwashes the stainless steel bag filter 51 to ensure filtration efficiency.

[0056] After cleaning, operators use the electric cage lifting and transfer cart 2 to transport the cleaned negative pressure monkey cages back to the negative pressure cage cabinet system 1. The central control system 6 automatically records the negative pressure monkey cage number, cleaning time, operator, type and concentration of disinfectant, and operating parameters at each stage, and generates a traceable report.

[0057] Actual operation tests showed that the surface of the cleaned negative pressure monkey cage was free of visible dirt, no pathogenic microorganisms were detected in the microbial sampling, no leaks were found in the indoor aerosol monitoring, and the system operated stably and reliably.

[0058] This invention eliminates the need to remove the cage 7 from the animal feeding area, thus avoiding the risk of pollution leakage during transportation.

[0059] This invention realizes a fully automated process of soaking, ultrasonic cleaning, rinsing, and air drying, eliminating the need for operators to directly contact the contaminated cages 7 and significantly reducing biosafety risks.

[0060] This invention enables mechanized transport, reducing labor intensity: the electric lifting and transfer vehicle 2 for cages, in conjunction with the cylinder lateral movement mechanism, allows a single person to complete the transport and workstation switching of 50kg cages 7.

[0061] This invention utilizes a micro-negative pressure and high-efficiency filtration to control aerosols: the local micro-negative pressure exhaust in the cleaning tank and the filter box 314 effectively prevent aerosols from spreading into the room during the cleaning process.

[0062] This invention provides a dual-modal wastewater treatment solution to avoid pipeline blockage: a dual-mode self-circulating filtration and discharge system, combined with a backwashing function, enables the recycling of disinfectant and the effective interception of solid waste.

[0063] The central control system 6 of this invention automatically records key information such as cage number 7, cleaning time, operator, and disinfectant concentration, meeting the traceability requirements of high-level laboratories.

[0064] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A disinfection and cleaning system for animal cages used in biosafety laboratories, characterized in that, Includes cage electric lifting and transfer vehicle (2), cage dual-station cleaning system (3), disinfectant preparation system (4), sewage treatment system (5) and central control system (6); The cage dual-station cleaning system (3) includes an immersion disinfection cleaning station and a rinsing station. Both the immersion disinfection cleaning station and the rinsing station are equipped with a sewage treatment system (5). Both the immersion disinfection cleaning station and the rinsing station are connected to the disinfectant preparation system (4). The cage dual-station cleaning system (3), the disinfectant preparation system (4), and the sewage treatment system (5) are all connected to the central control system (6).

2. The animal cage disinfection and cleaning system for a biosafety laboratory according to claim 1, characterized in that, The cage dual-station cleaning system (3) includes an immersion disinfection cleaning tank (31) and a rinsing tank (32). The rear side of the immersion disinfection cleaning tank (31) and the rinsing tank (32) are equipped with a lifting cylinder frame (33). The lifting cylinder frame (33) is equipped with a lifting cylinder and the piston rod of the lifting cylinder is connected to an L-shaped bracket (34). The L-shaped bracket (34) is located directly above the corresponding immersion disinfection cleaning tank (31) or rinsing tank (32). Several rollers (35) are symmetrically installed on the front and rear sides of the upper surface of the L-shaped bracket (34). The cage (7) to be cleaned is placed on the roller (35) of one of the L-shaped brackets (34). The front upper part of the immersion disinfection cleaning tank (31) and the rinsing tank (32) is equipped with a cage translation component.

3. The animal cage disinfection and cleaning system for a biosafety laboratory according to claim 2, characterized in that, The cage translation assembly includes a guide rail (36) fixed to the front of the soaking disinfection and cleaning tank (31) and the rinsing tank (32). A lever bracket (37) and a moving bracket (38) are slidably installed on the guide rail (36). A lever (39) is installed on the lever bracket (37). The lever (39) is located on one side of one of the L-shaped brackets (34). A first translation cylinder (310) is installed on the moving bracket (38). The piston rod end of the first translation cylinder (310) is connected to the lever bracket (37). A second translation cylinder (311) is fixed to the front of the rinsing tank (32). The piston rod end of the second translation cylinder (311) is connected to the moving bracket (38). Dustproof covers (315) are installed on the outside of the guide rail (36), lever bracket (37), moving bracket (38), first translation cylinder (310), and second translation cylinder (311).

4. The animal cage disinfection and cleaning system for a biosafety laboratory according to claim 3, characterized in that, The L-shaped bracket (34) is equipped with a cover plate (312) on the upper part, and a sealing strip is provided at the bottom of the cover plate (312).

5. The animal cage disinfection and cleaning system for a biosafety laboratory according to claim 4, characterized in that, The rinsing tank (32) is equipped with several compressed air nozzles, which are connected to external compressed air pipes.

6. The animal cage disinfection and cleaning system for a biosafety laboratory according to claim 5, characterized in that, The immersion disinfection and cleaning pool (31) and rinsing pool (32) are equipped with exhaust vents on the upper rear side. The exhaust vents are connected to the filter box (314) through the exhaust pipe (313). The filter box (314) is equipped with an exhaust fan.

7. The animal cage disinfection and cleaning system for a biosafety laboratory according to claim 6, characterized in that, The immersion disinfection and cleaning pool (31) is equipped with an ultrasonic generator.

8. The animal cage disinfection and cleaning system for a biosafety laboratory according to claim 1, characterized in that, The disinfectant preparation system (4) includes a disinfectant stock tank (41) and a disinfectant preparation tank (42). The disinfectant stock tank (41) is connected to the disinfectant preparation tank (42) via a metering diaphragm pump (43) and a pipeline. A stirring motor (44) is installed on the disinfectant preparation tank (42). The stirring motor (44) is connected to a stirring shaft. The stirring shaft is located inside the disinfectant preparation tank (42). The stirring shaft is equipped with stirring blades. The disinfectant preparation tank (42) is connected to the cage dual-station cleaning system (3) via a delivery pump and a pipeline.

9. The animal cage disinfection and cleaning system for a biosafety laboratory according to claim 1, characterized in that, The wastewater treatment system (5) includes two sets of two-stage wastewater treatment units. Each set of two-stage wastewater treatment units includes a stainless steel bag filter (51). The inlet of the stainless steel bag filter (51) is connected to the drain outlet of the cage dual-station cleaning system (3) through a diaphragm pump (52). The outlet of the stainless steel bag filter (51) is connected to the circulating return water port and the drain pipe of the cage dual-station cleaning system (3) respectively. The stainless steel bag filter (51) is also connected to a backwash filter (53).

10. The animal cage disinfection and cleaning system for a biosafety laboratory according to claim 1, characterized in that, The central control system (6) consists of a host computer (61), a communication module and a PLC. The host computer (61) is connected to the PLC through the communication module.

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