Laboratory rat IVC rearing cage frame air pipe dust removal and disinfection device

Abstract

The invention discloses an experimental rat IVC rearing cage frame air pipe dust removal and disinfection device which comprises a walking vehicle, a water suction pump and a negative pressure pump, the water suction pump and the negative pressure pump are installed on one side of the upper end of the walking vehicle, a filtering assembly is arranged on one side of the upper end of the walking vehicle, an air inlet of the negative pressure pump is communicated with a negative pressure pipe, and a water storage barrel is arranged on one side of the upper end of the walking vehicle. A telescopic rod is arranged at the position, above the filtering assembly, of the upper end of the walking vehicle, a dust removal assembly is arranged at the front end of the telescopic rod, a disinfection assembly is arranged on the edge of the upper end of the dust removal assembly in a matched mode, and the upper end and the lower end of the rear end of the outer wall of the telescopic rod communicate with communicating pipes; the upper end of the filtering assembly communicates with an exhaust pipe, and a storage battery and a control panel are arranged on one side of the upper end of the walking vehicle. The dust removal device is convenient to use and efficient in dust removal effect, the cage frame pipeline can be fully cleaned, and the labor intensity of workers can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of cage pipe dust removal, in particular to a dust removal and disinfection device for an air duct of an IVC feeding cage for experimental mice and rats. Background Art

[0002] In the history of human life science development, experimental animals are an important part of life science research. The dedication of experimental animals has accelerated the process of human exploration of the mysteries of life and the revelation of disease mechanisms. They have made important contributions to human health and scientific development. At present, the mainstream breeding equipment for mice and rats in the industry is the independently ventilated cage (IVC, Individually Ventilated Cage) breeding equipment system. The IVC breeding system is an efficient and safe breeding equipment widely used in modern experimental animal science, specially designed for laboratory animals such as mice, rats and other rodents. The IVC breeding cage provides independent and uniform ventilation for each cage through a unique ventilation system, ensuring the air quality in the cage and reducing the risk of cross infection.

[0003] The IVC system consists of three parts: the IVC main unit, cage racks and cage boxes. The cage racks are equipped with cage box air intake and exhaust duct systems, which can be set to racks with different cage numbers according to needs. The cage box air inlet and outlet holes can be connected to the air inlet and outlet terminals of each cage box on the cage rack to ensure that the gas is evenly delivered to the cage box. After the air flow circulates in the cage, the exhaust gas in the cage is discharged through the cage box and cage rack exhaust ducts. In this way, the entire IVC system forms a one-way air flow, and the air in the cage remains clean, ensuring the breeding environment of SPF mice and rats.

[0004] In addition to the main unit, the cages and boxes of the above IVC feeding equipment systems need to be regularly replaced, cleaned and disinfected. For the cleaning of the horizontal and vertical air supply and exhaust ducts on the cages, especially the vertical and bottom exhaust ducts, the facility managers currently do not have special and efficient tools to fully clean and disinfect the ducts. In the long run, it is easy to cause experimental animal feed dust to accumulate in the ventilation ducts, which is easy to breed pathogenic microorganisms such as book lice and bacteria, greatly affecting the level of animal microbial control, and shortening the service life of the equipment, increasing hidden dangers to the normal operation of the experimental animal facilities, and using traditional cleaning equipment to clean the ducts has many inconveniences and will also increase the labor intensity of the staff. Summary of the invention

[0005] The invention aims to provide an experimental mouse and rat IVC feeding cage air duct dust removal and disinfection device, which is easy to use and has a high dust removal effect, can not only fully clean the cage pipes, but also reduce the labor intensity of workers.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] An experimental mouse and rat IVC cage air duct dust removal and disinfection device comprises a traveling vehicle, a water pump and a negative pressure pump installed on one side of the upper end of the traveling vehicle, a filter assembly is arranged on one side of the upper end of the traveling vehicle, the negative pressure pump is installed on one side of the filter assembly, the air inlet of the negative pressure pump is connected with a negative pressure pipe extending to the bottom of the inner wall of the filter assembly, a water storage bucket is arranged on one side of the negative pressure pump on the upper end of the traveling vehicle, the water pump is installed on one side of the water storage bucket, the water inlet of the water pump is connected with a water inlet pipe extending to the bottom of the inner wall of the water storage bucket, a telescopic rod is arranged on the upper end of the traveling vehicle above the filter assembly, the telescopic rod comprises an outer sleeve with an opening at the front end, a first driving motor installed at the rear end of the inner wall of the outer sleeve, an inner tube sliding along the length direction of the inner wall of the outer sleeve and extending out of the front end opening of the outer sleeve, a threaded rod arranged at the front end of the power output shaft of the first driving motor and threadedly connected with the rear end of the outer wall of the inner tube for controlling its sliding, and spaces are left between the left and right sides of the outer wall of the inner tube and the inner wall of the outer sleeve;

[0008] A dust removal assembly is provided at the front end of the inner tube, and a disinfection assembly is provided at the edge of the upper end of the dust removal assembly. The upper and lower ends of the rear end of the outer wall of the outer sleeve are connected with connecting pipes. The water outlet of the water pump is connected with a water outlet pipe that is connected to and detachably connected to the corresponding connecting pipe on one side of the outer sleeve. A disinfection pipe that is connected to and has an elastic and spiral shape is provided between the disinfection assembly and one end of the corresponding connecting pipe. The upper end of the filter assembly is connected with an exhaust pipe that is connected to and detachably connected to the corresponding connecting pipe on the other side of the outer sleeve. A dust removal pipe that is connected to and has an elastic and spiral shape is provided between the other side of the front end of the outer wall 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 assembly and the battery are electrically connected to the control panel.

[0009] By adopting the above technical solution, when using, first add an appropriate amount of disinfectant into the water storage barrel, then move the walking car to the front of the IVC cage that needs to be dusted, then the staff picks up the telescopic rod and extends it into the pipe to be dusted, then operates the control panel to let the first drive motor work, the first drive motor drives the threaded rod to rotate, and the inner tube slides forward along the inner wall of the outer sleeve to achieve the purpose of adjusting the telescopic rod, then let the dust removal component and the negative pressure pump work, the negative pressure pump draws negative pressure into the filter component through the negative pressure pipe, and the vacuum pipe and the dust removal pipe cooperate to pump the inner The front end of the pipe is evacuated, and then the dust removal component works to remove dust from the inner wall of the pipe. The dust falling from the inside of the pipe will be sucked into the filter component from the dust removal pipe. When the dust removal is completed, the telescopic rod is extended and the dust removal component is stopped. Then the water pump is started. The water pump draws disinfectant through the water inlet pipe and transports the disinfectant from the water outlet pipe and the disinfection pipe to the disinfection component for spraying. 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 the disinfection is completed, the next pipe can be dusted and disinfected.

[0010] The present invention is further configured as follows: the walking vehicle includes a base plate, a plurality of rollers rotatably connected to the bottom of the base plate and distributed in an array, and an armrest arranged between the left and right ends on one side of the upper end of the base plate, and the control panel is arranged on the inner wall of the upper end of the armrest.

[0011] The present invention is further configured as follows: limit blocks are relatively arranged on the left and right sides of the front end of the inner wall of the outer sleeve, and the left and right sides of the outer wall of the inner tube are recessed inward along its length direction to be provided with limit grooves slidably connected to the limit blocks, and the left and right sides of the outer wall of each limit block and its front end are rotatably connected to pulleys that contact the inner walls of the corresponding limit grooves.

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

[0013] The present invention is further configured as follows: the dust removal assembly includes a connecting frame, a second drive motor installed on the upper end of the connecting frame, and a dust removal brush arranged on the upper end of the power output shaft of the second drive motor.

[0014] The present invention is further configured as follows: the disinfection assembly includes a support frame, a first water pipe arranged at the upper end of the support frame, a plurality of atomizing nozzles inclined upward and outward and all connected to the upper end of the outer wall of the first water pipe, and a second water pipe arranged on one side of the inner wall of the first water pipe and connected thereto.

[0015] The present invention is further configured as follows: the filter assembly includes a box body with an opening at the front end, a box door hinged on one side of the opening end of the box body and sealed therewith, a slide rail arranged in a U shape on the inner wall of the box body and close to its bottom, and a dust removal plate that cooperates with the slide rail and is detachably connected thereto.

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

[0017] The present invention is further configured as follows: 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 assembly on the exhaust pipe can be increased, thereby improving the dust removal effect.

[0019] The present invention is further configured as follows: a disturbance component is provided at the bottom of the inner wall of the water storage barrel, the disturbance component includes a fixed frame, 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 pumps out disinfectant to disinfect the pipeline, the disinfectant can be stirred by the disturbance component.

[0021] The present invention is further configured as follows: the front end of the inner wall of the inner tube is connected to a collecting bucket which 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 more concentratedly suck 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] First, the present invention is easy to use and has a high dust removal effect, which can not only fully clean the cage pipes, but also reduce the labor intensity of the staff;

[0025] Secondly, the present invention can simultaneously disinfect the inner wall of the IVC cage pipe after removing dust from the inner wall, thereby reducing the corresponding operation steps and improving the 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 apply the disinfectant sprayed from the disinfection component to the inner wall of the cage pipe, thereby improving the disinfection effect on the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0030] Figure 4 It is a schematic diagram of the structure of the dust removal assembly of the present invention;

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

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

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

[0034] In the figure: 1. Traveling vehicle; 11. Bottom plate; 12. Roller; 13. Handrail; 14. Negative pressure pump; 15. Filter assembly; 16. Box body; 17. Box door; 18. Slide rail; 19. Dust removal plate; 2. Negative pressure pipe; 21. Suction pipe; 22. Suction bucket; 23. Water storage bucket; 24. Water pump; 25. Disturbance assembly; 26. Fixed frame; 27. Impeller; 28. Water inlet pipe; 32. Water outlet pipe; 33. Telescopic rod; 34. Outer sleeve; 35. The first driving motor; 36. inner tube; 37. threaded rod; 38. limit block; 39. pulley; 4. limit groove; 41. dust removal assembly; 42. connecting frame; 43. second driving motor; 44. dust removal brush; 45. disinfection assembly; 46. supporting frame; 47. first water pipe; 48. atomizing nozzle; 49. second water pipe; 5. connecting pipe; 51. dust removal pipe; 52. collecting bucket; 53. disinfection pipe; 54. battery; 55. control panel. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0036] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "back", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0037] Example, see Figure 1-7A dust removal and disinfection device for an air duct of an IVC cage for experimental mice and rats, comprising a traveling vehicle 1, a water pump 24 and a negative pressure pump 14 installed on one side of the upper end of the traveling vehicle 1, the traveling vehicle 1 comprising a bottom plate 11, four rollers 12 rotatably connected to the bottom of the bottom plate 11 and distributed in an array, a handrail 13 cooperatively arranged between the left and right ends of one side of the upper end of the bottom plate 11, a filter assembly 15 is arranged on one side of the upper end of the bottom plate 11, and the filter assembly 15 comprises a box body 16 with a front end opening, and a box door 17 hinged to one side of the open end of the box body 16 and sealed therewith. , a slide rail 18 arranged in a U shape on the inner wall of the box body 16 and close to its bottom, a dust removal plate 19 matched with the slide rail 18 and detachably connected thereto, the 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 box body 16, a water storage barrel 23 is arranged on one side of the negative pressure pump 14 at the upper end of the traveling vehicle 1, a disturbance assembly 25 is arranged at the bottom of the inner wall of the water storage barrel 23, and the disturbance assembly 25 includes a fixing frame 26 and an impeller 27 rotatably connected to the upper end of the inner wall of the fixing frame 26.

[0038] The water pump 24 is installed on one side of the water storage barrel 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 barrel 23. The lower end of the water inlet pipe 28 is located on one side of the fixing frame 26. The upper end of the bottom plate 11 is provided with a telescopic rod 33 above the filter assembly 15. The telescopic rod 33 includes an outer sleeve 34 with a front opening, a first drive motor 35 installed at the rear end of the inner wall of the outer sleeve 34, an inner tube 36 sliding along the inner wall of the outer sleeve 34 and extending out of the front end opening of the outer sleeve 34, and an inner tube 36 provided at the first drive motor. A threaded rod 37 for controlling the sliding of the power output shaft 35 is provided at the front end thereof and is threadedly connected to the rear end of the outer wall of the inner tube 36. Space is left between the left and right sides of the outer wall of the inner tube 36 and the inner wall of the outer sleeve 34. A limit block 38 is relatively arranged on the left and right sides of the front end of the inner wall of the outer sleeve 34. The left and right sides of the outer wall of the inner tube 36 are recessed inwardly along the length direction to provide a limit groove 4 slidably connected to the limit block 38. The left and right sides of the outer wall of each limit block 38 and its front end are rotatably connected to a pulley 39 in contact with the inner wall of the corresponding limit groove 4.

[0039] A dust removal assembly 41 is provided at the front end of the inner tube 36. The dust removal assembly 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 arranged at the upper end of the power output shaft of the second drive motor 43. A disinfection assembly 45 is provided at the edge of the upper end of the second drive motor 43. The disinfection assembly 45 includes a support frame 46, a first water pipe 47 arranged at the upper end of the support frame 46, a plurality of atomizing nozzles 48 inclined upward and outwardly arranged and all connected to the upper end of the outer wall of the first water pipe 47, and a second water pipe 49 arranged on one side of the inner wall of the first water pipe 47 and connected thereto. A connecting pipe 5 is connected to both upper and lower ends of the rear end of the outer wall of the outer sleeve 34, and the water 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 sleeve 34. A disinfection pipe 53 that is connected thereto and is elastic and spiral is provided between the disinfection assembly 45 and one end of the corresponding connecting pipe 5.

[0040] The upper end of the box body 16 is connected to an exhaust pipe 21 which is connected to the corresponding connecting pipe 5 on the other side of the outer sleeve 34 and is detachably connected thereto. The upper end of the inner wall of the box body 16 is provided with an exhaust hopper 22 which is larger at the top and smaller at the bottom and is connected to the exhaust pipe 21. A dust removal pipe 51 which is connected thereto and is elastic and spiral is provided between the other side of the front end of the outer wall of the inner tube 36 and one end of the corresponding connecting pipe 5. The dust removal pipe 51 and the disinfection pipe 53 are respectively 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 collecting hopper 52 which 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 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 armrest 13. The water pump 24, the negative pressure pump 14, the first drive motor 35, the second drive motor 43 and the battery 54 are all electrically connected to the control panel 55.

[0041] Usage: When in use, first add an appropriate amount of disinfectant into the water storage bucket 23, then use the roller 12 on the bottom plate 11 to move the walking vehicle 1 to the front of the IVC cage that needs to be dusted, then the staff picks up the telescopic rod 33 and extends it into the pipe to be dusted, and then operates the control panel 55 on the handrail 13. The battery 54 provides electricity to make the first drive motor work, and the first drive motor 35 drives the threaded rod 37 to rotate, so that the inner tube 36 slides forward along the inner wall of the outer sleeve 34 to achieve the purpose of adjusting the length of the telescopic rod 33. When the inner tube 36 is extended and retracted, the limit Under the limiting effect of the limit block 38, the positioning groove 4 will prevent the inner tube 36 from rotating with the threaded rod 37. At the same time, the pulley 39 on the limit block 38 can also improve the smoothness of the inner tube 36 when sliding in the outer sleeve 34. Then the dust removal component 41 and the negative pressure pump 14 are put into operation. The negative pressure pump 14 draws negative pressure into the box 16 of the filter component 15 through the negative pressure pipe 2, and the front end of the inner tube 36 is exhausted by the exhaust pipe 21 and the dust removal pipe 51. Then the first drive motor 35 on the connecting frame 42 starts to work and drives the dust removal brush 44 to rotate to remove dust from the inner wall of the pipeline.

[0042] During dust removal, the first drive motor 35 reverses to shorten the telescopic rod 33, and the dust falling from the inner wall of the pipe will be sucked into the dust removal pipe 51 from the front end of the collecting bucket 52 and then enter the box body 16 along the exhaust pipe 21. The exhaust bucket 22 can increase the suction force of the exhaust pipe 21 to a certain extent. The air carrying dust will pass through the dust removal plate 19 to block the dust, and the clean air will pass through the lower end of the dust removal plate 19 to ensure a continuous negative pressure state in the filter assembly 15. When the dust removal is completed, the telescopic rod 33 is extended and the dust removal assembly 41 is stopped, and then the water pump 24 is started. The water pump 24 pumps out the disinfectant through the water inlet pipe 28 and transports the disinfectant from the water outlet pipe 32 and the disinfection pipe 53 to the second water pipe 49 and the first water 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 will adhere to the inner wall of the cage frame pipe, and at the same time, the inner tube 36 of the telescopic rod 33 will gradually shrink, and the inner wall of the dust-removed pipe will be disinfected with the cooperation of the rotating dust removal brush 44. When the water pump 24 pumps out the disinfectant, since the water inlet pipe 28 is located on one side of the fixed frame 26 of the disturbance component 25, when the water pump 24 pumps water through the water inlet pipe 28, the water flow near the water inlet pipe 28 will be carried along, and 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 barrel 23 and form a vortex, thereby achieving stirring of the disinfectant. After the disinfection is completed, the next cage frame pipe can be dusted and disinfected. After use, the water outlet pipe 32 and the air exhaust pipe 21 are removed from the connecting pipe 5, and 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 a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A dust removal and disinfection device for the air duct of an IVC cage for experimental mice and rats, comprising 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), characterized in that: A filter assembly (15) is provided on one side of the upper end of the walking vehicle (1), the 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 barrel (23) is provided on the upper end of the walking vehicle (1) on one side of the negative pressure pump (14), the water pump (24) is installed on one side of the water storage barrel (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 barrel (23), the upper end of the walking vehicle (1) is connected to the filter assembly A telescopic rod (33) is arranged above the member (15), the telescopic rod (33) comprising an outer sleeve (34) with an opening at the front end, a first driving motor (35) installed at the rear end of the inner wall of the outer sleeve (34), an inner tube (36) sliding along the length direction of the inner wall of the outer sleeve (34) and extending out of the front end opening of the outer sleeve (34), and a threaded rod (37) arranged at the front end of the power output shaft of the first driving motor (35) and threadedly connected to the rear end of the outer wall of the inner tube (36) for controlling its sliding, and spaces are left between the left and right sides of the outer wall of the inner tube (36) and the inner wall of the outer sleeve (34); The front end of the inner tube (36) is provided with a dust removal component (41), and the edge of the upper end of the dust removal component (41) is provided with a disinfection component (45). The upper and lower ends of the rear end of the outer wall of the outer sleeve (34) are both connected with a connecting pipe (5). The water outlet of the water pump (24) is connected with a water outlet pipe (32) which is connected with and detachably connected to the corresponding connecting pipe (5) on one side of the outer sleeve (34). A disinfection pipe (53) which is elastic and spiral and is connected with the corresponding connecting pipe (5) is provided between the disinfection component (45) and one end of the corresponding connecting pipe (5). The upper end of the filter component (15) is provided with a connecting pipe (53) which is connected with the connecting pipe (5). An exhaust pipe (21) is connected to and detachably connected to a corresponding connecting pipe (5) on the other side of the outer sleeve (34); a dust removal pipe (51) is provided between the other side of the front end of the outer wall of the inner tube (36) and one end of the corresponding connecting pipe (5), both of which are connected to the inner tube (36) and are elastic and spiral; a battery (54) and a control panel (55) are provided on one side of the upper end of the traveling vehicle (1); the water pump (24), the negative pressure pump (14), the first drive motor (35), the dust removal assembly (41) and the battery (54) are all electrically connected to the control panel (55).

2. The dust removal and disinfection device for the air duct of the experimental mouse and rat IVC feeding cage according to claim 1, characterized in that: The walking vehicle (1) comprises 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) arranged between left and right ends on one side of the upper end of the base plate (11), and the control panel (55) is arranged 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 experimental mouse and rat IVC feeding cage according to claim 1, characterized in that: Limit blocks (38) are arranged opposite to each other on the left and right sides of the front end of the inner wall of the outer sleeve (34); limit grooves (4) are recessed inwardly along the length direction of the outer wall of the inner tube (36) and are slidably connected to the limit blocks (38); and pulleys (39) are rotatably connected to the inner walls of the corresponding limit grooves (4) on the left and right sides of the outer wall of each limit block (38) and its front end.

4. The dust removal and disinfection device for the air duct of the experimental mouse and rat IVC feeding cage according to claim 1, characterized in that: The dust removal component (41) comprises 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) arranged 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 experimental mouse and rat IVC feeding cage according to claim 1, characterized in that: The disinfection assembly (45) comprises a support frame (46), a first water pipe (47) arranged at the upper end of the support frame (46), a plurality of atomizing nozzles (48) arranged obliquely upward and outward and connected to the upper end of the outer wall of the first water pipe (47), and a second water pipe (49) arranged at one side of the inner wall of the first water pipe (47) and connected thereto.

6. The dust removal and disinfection device for the air duct of the experimental mouse and rat IVC feeding cage according to claim 1, characterized in that: The filter assembly (15) comprises a box body (16) with an opening at the front end, a box door (17) hinged to one side of the opening end of the box body (16) and sealed therewith, a slide rail (18) arranged in a U shape on the inner wall of the box body (16) and close to the bottom thereof, and a dust removal plate (19) cooperating with the slide rail (18) and detachably connected thereto.

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

8. The dust removal and disinfection device for the air duct of the IVC feeding cage for experimental mice and rats according to claim 1, characterized in that: A disturbance component (25) is provided at the bottom of the inner wall of the water storage barrel (23), and the disturbance component (25) comprises a fixing frame (26) and an impeller (27) rotatably connected to the upper end of the inner wall of the fixing frame (26), and the lower end of the water inlet pipe (28) is located at one side inside the fixing frame (26).

9. The device for dust removal and disinfection of air ducts of IVC cages for experimental mice and rats according to claim 1, characterized in that: The front end of the inner wall of the inner tube (36) is connected to a collecting bucket (52) which 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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