A dust removal and disinfection device for the air duct of an IVC (In vitro cavitation) cage for laboratory mice and rats.

Abstract

This invention discloses a dust removal and disinfection device for the air ducts of IVC (In vitro cavitation) cages for laboratory mice and rats. The device includes a mobile cart, a water pump and a negative pressure pump installed on one side of the upper end of the cart, a filter assembly on one side of the upper end of the cart, a negative pressure pipe connected to the air inlet of the negative pressure pump, a water storage tank on one side of the upper end of the cart, a water inlet pipe connected to the water inlet of the water pump, a telescopic rod above the filter assembly on the upper end of the cart, a dust removal assembly at the front end of the telescopic rod, a disinfection assembly fitted to the upper edge of the dust removal assembly, connecting pipes at both the upper and lower ends of the rear end of the telescopic rod's outer wall, a water outlet pipe connected to the water outlet of the water pump, an air extraction pipe connected to the upper end of the filter assembly, and a battery and control panel on one side of the upper end of the cart. This invention is convenient to use and highly efficient in dust removal, not only thoroughly cleaning the cage ducts but also reducing the labor intensity of workers.

Description

Technical Field

[0001] This invention relates to the field of cage duct dust removal technology, and in particular to a dust removal and disinfection device for air ducts of laboratory mice and rats in IVC rearing cages. Background Technology

[0002] In the history of human life sciences, laboratory animals have been an important component of life science research. Their sacrifice has accelerated humanity's exploration of the mysteries of life and the unveiling of disease mechanisms, making significant contributions to human health and scientific development. Currently, the mainstream rearing equipment for mice and rats is the individually ventilated cage (IVC) system. The IVC system is a highly efficient and safe rearing device widely used in modern laboratory animal science, specifically designed for laboratory animals such as mice and rats. Through its unique ventilation system, the IVC cage provides independent and uniform ventilation to each cage, ensuring air quality and reducing the risk of cross-infection.

[0003] The IVC system consists of three parts: the IVC main unit, the cage rack, and the cage box. The cage rack is equipped with an air intake and exhaust pipe system for the cage box. It can be configured to accommodate different numbers of cages as needed. The air intake and exhaust ports of the cage box can be connected to the air intake and exhaust terminals of each cage box on the cage rack to ensure that the gas is delivered evenly into the cage box. After the airflow circulates inside the cage, the exhaust gas inside the cage is discharged outside through the exhaust pipes of the cage box and the cage rack. In this way, the entire IVC system forms a unidirectional airflow, keeping the air inside the cage clean and ensuring the breeding environment for SPF mice and rats.

[0004] In addition to the main unit, the cages and boxes in the above-mentioned IVC (Indoor Animal Housing) breeding equipment system all require regular replacement, cleaning, and disinfection. Currently, facility managers lack specialized and efficient tools to thoroughly clean and disinfect the horizontal and vertical air supply and exhaust ducts on the cages, especially the vertical and bottom exhaust ducts. Over time, this can easily lead to the accumulation of animal feed dust in the ventilation ducts, which can breed booklice, bacteria, and other pathogenic microorganisms, significantly affecting the level of animal microbial control and shortening the lifespan of the equipment. This increases the risk of problems in the normal operation of the laboratory animal facility. Furthermore, using traditional cleaning equipment to clean the ducts is inconvenient and increases the workload of staff. Summary of the Invention

[0005] The purpose of this invention is to provide a dust removal and disinfection device for the air ducts of laboratory mouse and rat IVC rearing cages. It is easy to use and has a high dust removal efficiency. It can not only thoroughly clean the cage ducts, but also reduce the labor intensity of the staff.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0007] A dust removal and disinfection device for the air duct of an IVC (In vitro cavitation) cage for laboratory mice and rats includes a trolley, a water pump and a negative pressure pump installed on one side of the upper end of the trolley, a filter assembly installed on one side of the upper end of the trolley, a negative pressure pump installed on one side of the filter assembly, an air inlet of the negative pressure pump connected to a negative pressure pipe extending to the bottom of the inner wall of the filter assembly, a water storage tank installed on one side of the negative pressure pump at the upper end of the trolley, a water pump installed on one side of the water storage tank, a water inlet connected to a water inlet pipe extending to the bottom of the inner wall of the water storage tank, and a telescopic rod installed above the filter assembly at the upper end of the trolley. The telescopic rod includes an outer tube with an open front end, a first drive motor installed at the rear end of the inner wall of the outer tube, an inner tube that slides along the length of the inner wall of the outer tube and extends out of the front opening of the outer tube, and a threaded rod for controlling its sliding, located at the front end of the power output shaft of the first drive motor and threadedly connected to the rear end of the outer wall of the inner tube. Space is left between the left and right sides of the outer wall of the inner tube and the inner wall of the outer tube.

[0008] A dust removal component is provided at the front end of the inner tube, and a disinfection component is provided at the upper edge of the dust removal component. Both the upper and lower ends of the outer wall of the outer tube are connected to connecting pipes. The outlet of the water pump is connected to a water outlet pipe that is connected to and detachably connected to a corresponding connecting pipe on one side of the outer tube. A flexible, spiral-shaped disinfection pipe is provided between the disinfection component and one end of the corresponding connecting pipe. The upper end of the filter component is connected to an air extraction pipe that is connected to and detachably connected to a corresponding connecting pipe on the other side of the outer tube. A flexible, spiral-shaped dust removal pipe is provided between the other side of the front end of the inner tube and one end of the corresponding connecting pipe. A battery and a control panel are provided on one side of the upper end of the traveling vehicle. The water pump, the negative pressure pump, the first drive motor, the dust removal component, and the battery are all electrically connected to the control panel.

[0009] By adopting the above technical solution, during use, first add an appropriate amount of disinfectant to the water storage tank, then move the mobile vehicle to the IVC cage that needs dust removal. Next, the operator picks up the telescopic rod and inserts it into the pipe to be dusted. Then, the control panel is operated to activate the first drive motor, which rotates the threaded rod, causing the inner tube to slide forward along the inner wall of the outer tube to adjust the telescopic rod. Then, the dust removal assembly and negative pressure pump are activated. The negative pressure pump draws negative pressure from the filter assembly through the negative pressure pipe, and the suction pipe and dust removal pipe work together to remove the internal... Air is drawn from the front end of the pipe, and then the dust removal component works to remove dust from the inner wall of the pipe. Dust falling from inside the pipe is drawn into the filter component through the dust removal pipe. After dust removal is completed, the telescopic rod is extended and the dust removal component stops working. Then the water pump is activated, drawing disinfectant through the inlet pipe and delivering it to the disinfection component through the outlet pipe and disinfection pipe. Then the telescopic rod is gradually retracted. With the cooperation of the dust removal component, the inner wall of the pipe after dust removal is disinfected. After disinfection is completed, the next pipe can be dusted and disinfected.

[0010] A further embodiment of the present invention is that the vehicle includes a base plate, a plurality of rollers rotatably connected to the bottom of the base plate and arranged in an array, and a handrail disposed between the left and right ends on one side of the upper end of the base plate, and the control panel is disposed on the inner wall of the upper end of the handrail.

[0011] A further feature of the present invention is that: limiting blocks are provided on the left and right sides of the front end of the inner wall of the outer tube, and limiting grooves that are slidably connected to the limiting blocks are provided on the left and right sides of the outer wall of the inner tube along its length direction. Each limiting block has pulleys rotatably connected to the inner wall of the corresponding limiting groove on its left and right sides and its front end.

[0012] By adopting the above technical solution, not only can the inner tube be prevented from rotating when adjusting the length of the telescopic rod, but the smoothness of the inner tube sliding along the inner wall of the outer tube can also be improved.

[0013] A further embodiment of the present invention is that the dust removal assembly includes a connecting frame, a second drive motor mounted on the upper end of the connecting frame, and a dust removal brush disposed on the upper end of the power output shaft of the second drive motor.

[0014] A further configuration of the present invention is as follows: the disinfection component includes a support frame, a first water guide pipe disposed on the upper end of the support frame, a plurality of atomizing nozzles that are inclined upward and outward and are all connected to the upper end of the outer wall of the first water guide pipe, and a second water guide pipe disposed on one side of the inner wall of the first water guide pipe and connected thereto.

[0015] A further embodiment of the present invention is that the filter assembly includes a housing with a front opening, a door hinged to and sealed to one side of the opening end of the housing, a slide rail arranged in a U-shape on the inner wall of the housing near its bottom, and a dust removal plate that cooperates with and is detachably connected to the slide rail.

[0016] By adopting the above technical solution, not only can dust falling from the inner wall of the pipe be collected, but dust will also be prevented from entering the negative pressure pump and affecting its normal operation.

[0017] A further feature of the present invention is that an air extraction hopper, which is larger at the top and smaller at the bottom, is provided at the upper end of the inner wall of the box.

[0018] By adopting the above technical solution, the suction force of the filter component on the air extraction pipe can be improved, thereby enhancing the dust removal effect.

[0019] A further feature of the present invention is that a disturbance component is provided at the bottom of the inner wall of the water storage tank, the disturbance component includes a fixed frame and an impeller rotatably connected to the upper end of the inner wall of the fixed frame, and the lower end of the water inlet pipe is located on one side inside the fixed frame.

[0020] By adopting the above technical solution, when the water pump draws disinfectant to disinfect the pipeline, the disturbance component can stir the disinfectant.

[0021] A further feature of the present invention is that the front end of the inner wall of the inner tube is connected to a collection hopper that is larger at the top and smaller at the bottom, and whose lower end is connected to the front end of the dust removal pipe.

[0022] By adopting the above technical solution, the dust removal pipe can concentrate on sucking the front end of the inner pipe, thereby improving the centralized treatment of dust.

[0023] In summary, the present invention has the following beneficial effects:

[0024] Firstly, this invention is easy to use and has a high dust removal efficiency. It can not only thoroughly clean the cage pipes, but also reduce the labor intensity of the workers.

[0025] Secondly, this invention can simultaneously disinfect the inner wall of the IVC cage pipe after dust removal, reducing the corresponding operation steps and improving work efficiency.

[0026] Thirdly, the dust removal brush of the present invention can not only remove dust from the inner wall of the cage pipe, but also evenly and comprehensively coat the inner wall of the cage pipe with the disinfectant sprayed from the disinfection component, thereby improving the disinfection effect of the pipe. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is mainly used to show the positional connection relationship of each component;

[0029] Figure 3 This is a schematic diagram of the structure of the filter component of the present invention;

[0030] Figure 4 This is a schematic diagram of the dust removal component of the present invention;

[0031] Figure 5 This is a schematic diagram of the structure of the disinfection component of the present invention;

[0032] Figure 6 This is a schematic diagram of the telescopic rod of the present invention;

[0033] Figure 7 It is mainly used to show the positional connection relationship between the dust removal pipe and the disinfection pipe.

[0034] In the diagram: 1. Walking vehicle; 11. Base plate; 12. Rollers; 13. Handrail; 14. Negative pressure pump; 15. Filter assembly; 16. Housing; 17. Door; 18. Slide rail; 19. Dust collection plate; 2. Negative pressure pipe; 21. Exhaust pipe; 22. Exhaust hopper; 23. Water storage tank; 24. Water pump; 25. Disturbance assembly; 26. Fixing frame; 27. Impeller; 28. Inlet pipe; 32. Outlet pipe; 33. Telescopic rod; 34. Outer sleeve; 35. 36. First drive motor; 37. Inner tube; 38. Threaded rod; 39. Limiting block; 40. Pulley; 41. Limiting groove; 42. Dust removal assembly; 43. Connecting frame; 44. Second drive motor; 45. Dust removal brush; 46. Disinfection assembly; 47. Support frame; 48. First water guide pipe; 49. Atomizing nozzle; 50. Second water guide pipe; 51. Connecting pipe; 52. Dust removal pipe; 53. Collection hopper; 54. Disinfection pipe; 55. Battery; 56. Control panel. Detailed Implementation

[0035] The present invention will be further described in detail below with reference to the accompanying drawings.

[0036] In the description of this invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] Example, refer to Figure 1-7A dust removal and disinfection device for the air duct of an IVC (In vitro ventilation) cage for laboratory mice and rats includes a trolley 1, a water pump 24 and a negative pressure pump 14 installed on one side of the upper end of the trolley 1. The trolley 1 includes a base plate 11, four rollers 12 rotatably connected to the bottom of the base plate 11 and arranged in an array, and handrails 13 arranged between the left and right ends on one side of the upper end of the base plate 11. A filter assembly 15 is provided on one side of the upper end of the base plate 11. The filter assembly 15 includes a box 16 with an opening at the front end and a door 17 hinged to and sealed to the opening end of the box 16. A U-shaped slide rail 18 is installed on the inner wall of the housing 16 near its bottom, and a dust removal plate 19 is fitted with and detachably connected to the slide rail 18. A negative pressure pump 14 is installed on one side of the filter assembly 15. The air inlet of the negative pressure pump 14 is connected to a negative pressure pipe 2 that extends to the bottom of the inner wall of the housing 16. A water storage tank 23 is installed on the upper end of the traveling vehicle 1 on one side of the negative pressure pump 14. A disturbance component 25 is installed at the bottom of the inner wall of the water storage tank 23. The disturbance component 25 includes a fixed frame 26 and an impeller 27 rotatably connected to the upper end of the inner wall of the fixed frame 26.

[0038] A water pump 24 is installed on one side of a water storage tank 23. The inlet of the water pump 24 is connected to an inlet pipe 28 that extends to the bottom of the inner wall of the water storage tank 23. The lower end of the inlet pipe 28 is located on one side inside the fixing frame 26. A telescopic rod 33 is installed on the upper end of the base plate 11 above the filter assembly 15. The telescopic rod 33 includes an outer sleeve 34 with an open front end, a first drive motor 35 installed on the rear end of the inner wall of the outer sleeve 34, an inner tube 36 that slides along the length of the inner wall of the outer sleeve 34 and extends out of the front opening of the outer sleeve 34, and a first drive motor 35 installed on the first drive motor. A threaded rod 37, which is threaded to the front end of the power output shaft and threaded to the rear end of the outer wall of the inner tube 36, is used to control its sliding. There is space between the left and right sides of the outer wall of the inner tube 36 and the inner wall of the outer tube 34. A limiting block 38 is provided on the left and right sides of the front end of the inner wall of the outer tube 34. A limiting groove 4, which is slidably connected to the limiting block 38, is provided on the left and right sides of the outer wall of the inner tube 36 along its length direction. A pulley 39 is rotatably connected to the inner wall of the corresponding limiting groove 4 on the left and right sides and the front end of the outer wall of each limiting block 38.

[0039] A dust removal component 41 is provided at the front end of the inner tube 36. The dust removal component 41 includes a connecting frame 42, a second drive motor 43 installed on the upper end of the connecting frame 42, and a dust removal brush 44 located on the upper end of the power output shaft of the second drive motor 43. A disinfection component 45 is provided at the upper edge of the second drive motor 43. The disinfection component 45 includes a support frame 46, a first water guide pipe 47 located on the upper end of the support frame 46, several atomizing nozzles 48 that are inclined upward and outward and are all connected to the upper end of the outer wall of the first water guide pipe 47, and a second water guide pipe 49 located on one side of the inner wall of the first water guide pipe 47 and connected to it. Both the upper and lower ends of the outer wall of the outer tube 34 are connected to a connecting pipe 5. The outlet of the water pump 24 is connected to a water outlet pipe 32 that is connected to and detachably connected to the corresponding connecting pipe 5 on one side of the outer tube 34. A disinfection pipe 53 that is elastic and spiral-shaped and connected to the corresponding connecting pipe 5 is provided between the disinfection component 45 and one end of the corresponding connecting pipe 5.

[0040] The upper end of the housing 16 is connected to a suction pipe 21 that is connected to and detachably connected to the corresponding connecting pipe 5 on the other side of the outer sleeve 34. The upper end of the inner wall of the housing 16 is provided with a suction hopper 22 that is larger at the top and smaller at the bottom and is connected to the suction pipe 21. The other side of the front end of the outer wall of the inner tube 36 is connected to one end of the corresponding connecting pipe 5 with a flexible and spiral dust removal pipe 51 that is connected to it. The dust removal pipe 51 and the disinfection pipe 53 are located in the space between the inner tube 36 and the outer sleeve 34. The front end of the inner wall of the inner tube 36 is connected to a collection hopper 52 that is larger at the top and smaller at the bottom and whose lower end is connected to the front end of the dust removal pipe 51. A storage battery 54 is provided on one side of the upper end of the bottom plate 11. A control panel 55 is provided on the inner wall of the upper end of the handrail 13. The water pump 24, the negative pressure pump 14, the first drive motor 35, the second drive motor 43 and the storage battery 54 are all electrically connected to the control panel 55.

[0041] Instructions for use: First, add an appropriate amount of disinfectant to the water storage tank 23. Then, use the rollers 12 on the base plate 11 to move the traveling vehicle 1 to the IVC cage that needs dust removal. Next, the operator picks up the telescopic rod 33 and inserts it into the pipe to be dusted. Then, operate the control panel 55 on the handle 13. The battery 54 provides power to the first drive motor. The first drive motor 35 drives the threaded rod 37 to rotate, allowing the inner tube 36 to slide forward along the inner wall of the outer tube 34 to adjust the length of the telescopic rod 33. When the inner tube 36 extends or retracts, the limit... The slot 4 will prevent the inner tube 36 from rotating with the threaded rod 37 under the restriction of the limiting block 38. At the same time, the pulley 39 on the limiting block 38 can also improve the smoothness of the inner tube 36 sliding in the outer tube 34. Then, the dust removal component 41 and the negative pressure pump 14 will work. The negative pressure pump 14 will draw the box 16 of the filter component 15 into negative pressure through the negative pressure pipe 2 and draw air from the front end of the inner tube 36 through the air extraction pipe 21 and the dust removal pipe 51. Then, the first drive motor 35 on the connecting frame 42 will work and drive the dust removal brush 44 to rotate to remove dust from the inner wall of the pipe.

[0042] During dust removal, the first drive motor 35 reverses to shorten the length of the telescopic rod 33. Dust falling from the inner wall of the pipe is sucked into the dust removal pipe 51 from the front end of the collection hopper 52 and then enters the housing 16 through the exhaust pipe 21. The exhaust hopper 22 can increase the suction power of the exhaust pipe 21 to a certain extent. The dust-laden air passes through the dust removal plate 19 to block the dust, while clean air passes through the lower end of the dust removal plate 19 to ensure a continuous negative pressure state in the filter assembly 15. After dust removal is completed, the telescopic rod 33 is extended and the dust removal assembly 41 stops working. Then, the water pump 24 is activated. The water pump 24 draws the disinfectant through the inlet pipe 28 and delivers the disinfectant through the outlet pipe 32 and the disinfection pipe 53 to the second water guide pipe 49 and the first water guide pipe 47 of the disinfection assembly 45 and sprays it out from the atomizing nozzle 48.

[0043] The disinfectant sprayed from the atomizing nozzle 48 adheres to the inner wall of the cage pipe, while the inner tube 36 of the telescopic rod 33 gradually contracts. With the help of the rotating dust removal brush 44, the inner wall of the pipe after dust removal is disinfected. When the water pump 24 draws the disinfectant, since the water inlet pipe 28 is located on one side of the fixing frame 26 of the disturbance component 25, the water flow near the water inlet pipe 28 will be carried along when the water pump 24 draws water through the water inlet pipe 28. At the same time, the impeller 27 will also start to rotate. The rotating impeller 27 will start to disturb the disinfectant at the bottom of the water storage tank 23 and form a vortex, thereby agitating the disinfectant. After disinfection, the next cage pipe can be dusted and disinfected. After use, the water outlet pipe 32 and the air extraction pipe 21 are removed from the connecting pipe 5. Then, the box door 17 is opened, the dust removal plate 19 is removed from the slide rail 18, the dust is cleaned, and then it is reinstalled into the slide rail 18.

[0044] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A dust removal and disinfection device for the air duct of an IVC (Indoor Cell) housing for laboratory mice and rats, comprising a mobile cart (1), a water pump (24) and a negative pressure pump (14) installed on one side of the upper end of the mobile cart (1), characterized in that: A filter assembly (15) is provided on one side of the upper end of the traveling vehicle (1). A negative pressure pump (14) is installed on one side of the filter assembly (15). The air inlet of the negative pressure pump (14) is connected to a negative pressure pipe (2) extending to the bottom of the inner wall of the filter assembly (15). A water storage tank (23) is provided on one side of the negative pressure pump (14) at the upper end of the traveling vehicle (1). A water pump (24) is installed on one side of the water storage tank (23). The water inlet of the water pump (24) is connected to a water inlet pipe (28) extending to the bottom of the inner wall of the water storage tank (23). The upper end of the traveling vehicle (1) is connected to the filter assembly. A telescopic rod (33) is provided above the component (15). The telescopic rod (33) includes an outer tube (34) with an open front end, a first drive motor (35) installed on the rear end of the inner wall of the outer tube (34), an inner tube (36) that slides along the length of the inner wall of the outer tube (34) and extends out of the front end opening of the outer tube (34), and a threaded rod (37) provided at the front end of the power output shaft of the first drive motor (35) and threadedly connected to the rear end of the outer wall of the inner tube (36) for controlling its sliding. There is space between the left and right sides of the outer wall of the inner tube (36) and the inner wall of the outer tube (34). The inner tube (36) is provided with a dust removal component (41) at its front end. A disinfection component (45) is provided at the upper edge of the dust removal component (41). Both the upper and lower ends of the outer wall of the outer tube (34) are connected to a connecting pipe (5). The outlet of the water pump (24) is connected to a water outlet pipe (32) that is connected to and detachably connected to the corresponding connecting pipe (5) on one side of the outer tube (34). A disinfection pipe (53) that is elastic and spiral-shaped and is connected to one end of the disinfection component (45) and the corresponding connecting pipe (5). The upper end of the filter component (15) is provided with a dust removal component (41) that is connected to and spiral-shaped. An air extraction pipe (21) is connected to and detachably connected to the corresponding connecting pipe (5) on the other side of the outer tube (34). A dust removal pipe (51) that is elastic and spiral-shaped and connected to the other side of the front end of the outer wall of the inner tube (36) is provided between it and one end of the corresponding connecting pipe (5). A storage battery (54) and a control panel (55) are provided on one side of the upper end of the vehicle (1). The water pump (24), the negative pressure pump (14), the first drive motor (35), the dust removal component (41) and the storage battery (54) are all electrically connected to the control panel (55).

2. The dust removal and disinfection device for the air duct of the IVC (In vitro cavitation) housing cage for laboratory mice and rats according to claim 1, characterized in that: The vehicle (1) includes a base plate (11), a plurality of rollers (12) rotatably connected to the bottom of the base plate (11) and arranged in an array, and a handrail (13) disposed between the left and right ends on one side of the upper end of the base plate (11). The control panel (55) is disposed on the inner wall of the upper end of the handrail (13).

3. The dust removal and disinfection device for the air duct of the IVC (In vitro cavitation) housing cage for laboratory mice and rats according to claim 1, characterized in that: Limiting blocks (38) are provided on the left and right sides of the front end of the inner wall of the outer tube (34). Limiting grooves (4) that are slidably connected to the limiting blocks (38) are provided on the left and right sides of the outer wall of the inner tube (36) along its length direction. Each limiting block (38) has a pulley (39) that is rotatably connected to the inner wall of the corresponding limiting groove (4) on the left and right sides and its front end.

4. The dust removal and disinfection device for the air duct of the IVC (In vitro cavitation) housing for laboratory mice and rats according to claim 1, characterized in that: The dust removal assembly (41) includes a connecting frame (42), a second drive motor (43) mounted on the upper end of the connecting frame (42), and a dust removal brush (44) disposed on the upper end of the power output shaft of the second drive motor (43).

5. The dust removal and disinfection device for the air duct of the IVC (In vitro cavitation) housing cage for laboratory mice and rats according to claim 1, characterized in that: The disinfection component (45) includes a support frame (46), a first water guide pipe (47) disposed on the upper end of the support frame (46), a plurality of atomizing nozzles (48) that are inclined upward and outward and are all connected to the upper end of the outer wall of the first water guide pipe (47), and a second water guide pipe (49) disposed on one side of the inner wall of the first water guide pipe (47) and connected to it.

6. The dust removal and disinfection device for the air duct of the IVC (In vitro cavitation) housing cage for laboratory mice and rats according to claim 1, characterized in that: The filter assembly (15) includes a box (16) with a front opening, a door (17) hinged to and sealed to one side of the opening of the box (16), a slide rail (18) arranged in a U-shape on the inner wall of the box (16) near its bottom, and a dust removal plate (19) that cooperates with and is detachably connected to the slide rail (18).

7. The dust removal and disinfection device for the air duct of an IVC (In vitro cavitation) housing cage for laboratory mice and rats according to claim 6, characterized in that: The upper end of the inner wall of the box (16) is provided with an air extraction hopper (22) that is larger at the top and smaller at the bottom.

8. The dust removal and disinfection device for the air duct of the IVC (In vitro cavitation) housing cage for laboratory mice and rats according to claim 1, characterized in that: The bottom of the inner wall of the water storage tank (23) is provided with a disturbance component (25). The disturbance component (25) includes a fixed frame (26) and an impeller (27) rotatably connected to the upper end of the inner wall of the fixed frame (26). The lower end of the water inlet pipe (28) is located on one side inside the fixed frame (26).

9. The dust removal and disinfection device for the air duct of an IVC (In vitro cavitation) housing cage for laboratory mice and rats according to claim 1, characterized in that: The inner wall of the inner tube (36) is connected to a collection hopper (52) that is larger at the top and smaller at the bottom, and whose lower end is connected to the front end of the dust removal pipe (51).

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