A device for cleaning the inner wall of a ventilator threaded tube

By designing an internal wall cleaning device for the spray pipe and drive mechanism, the problem of difficult drainage of cleaning fluid from the inner wall of the threaded pipe was solved, achieving a more efficient internal wall cleaning effect and ensuring thorough cleaning of the threaded pipe.

CN224346572UActive Publication Date: 2026-06-12NANNING TRADITIONAL CHINESE MEDICINE HOSPITAL

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NANNING TRADITIONAL CHINESE MEDICINE HOSPITAL
Filing Date
2025-06-18
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

In existing technologies, it is difficult to completely drain the liquid after cleaning the inner wall of the ventilator's threaded tubing, resulting in residual dirt and poor cleaning effect.

Method used

Design an inner wall cleaning device including a spray pipe, a clamping assembly, a liquid outlet, a liquid inlet structure, and a drive mechanism. The spray pipe is axially rotatable and is equipped with a nozzle and a brush. The threaded pipe is fixed by the clamping assembly, and the drive mechanism drives the spray pipe to rotate to flush the inner wall.

🎯Benefits of technology

It accelerates the discharge of cleaning fluid from the inner wall of the threaded pipe, improves the cleaning effect of the inner wall, and ensures the thorough cleaning of the threaded pipe.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224346572U_ABST
    Figure CN224346572U_ABST
Patent Text Reader

Abstract

The utility model belongs to the technical field of medical instrument cleaning equipment, concretely relates to a breathing machine screw pipe's inner wall cleaning device, including spray pipe, clamping assembly, liquid outlet, liquid inlet structure and drive mechanism, wherein spray pipe can be axially rotatable and be provided in screw pipe, the outer wall of spray pipe is equipped with multiple rows of shower nozzle and brush, is used for the inner wall of screw pipe is washed, clamping assembly is respectively established at the both ends of spray pipe, is used for clamping fixed screw pipe's both ends, liquid outlet is established on clamping assembly and is linked with screw pipe, and one end of liquid inlet structure is rotatably connected with spray pipe, and is used for conveying cleaning fluid to spray pipe, drive mechanism is detachably connected with the other end of spray pipe, and spray pipe is driven to rotate axially through drive mechanism, realizes the inner wall of screw pipe and is washed, can accelerate internal cleaning fluid discharge, improves the inner wall cleaning effect of screw pipe.
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Description

Technical Field

[0001] This utility model belongs to the technical field of medical device cleaning equipment, specifically relating to a device for cleaning the inner wall of a ventilator threaded tube. Background Technology

[0002] A ventilator is an important medical device that can prevent and treat respiratory failure, reduce complications, and save and prolong patients' lives. Therefore, cleaning and disinfecting ventilators and related accessories is crucial, especially thoroughly cleaning the ventilator's tubing, which can effectively control the occurrence of ventilator-associated pneumonia.

[0003] The patent with publication number CN115069691A discloses a special cleaning device for the threaded tube of a ventilator, including a disinfection box, an inlet tube and an outlet tube respectively connected to the disinfection box, a cap on the top of the disinfection box, an inner tube cleaning mechanism and a lifting mechanism. The lifting mechanism can move the cap closer to or away from the disinfection box. The inlet sealing end and the power mechanism are located at both ends of the disinfection box. The inlet sealing end is connected to the inlet tube. The inner tube cleaning mechanism includes a bracket and a cleaning brush. The cleaning brush is mounted on a support shaft, which is hung on the bracket. The power mechanism is used to drive the support shaft to rotate. The outer tube cleaning mechanism is used to clean the outer wall of the threaded tube. The inlet sealing end can deliver cleaning fluid or clean water into the threaded tube and the disinfection box to clean the threaded tube, and can also fix the threaded tube. The cleaning brush of the inner tube cleaning mechanism can be removed to facilitate the insertion of the cleaning brush into the threaded tube.

[0004] However, the aforementioned patent delivers cleaning fluid or water into the threaded tube and disinfection box through the liquid inlet seal. The liquid after cleaning in the threaded tube cannot be completely discharged, and stains are easily left in the grooves on the inner wall of the threaded tube. Therefore, the inner tube cleaning mechanism needs to be improved. Utility Model Content

[0005] In view of the shortcomings of the existing technology, this utility model proposes an inner wall cleaning device for the threaded tube of a ventilator. By flushing the inner wall of the threaded tube, the internal cleaning fluid can be discharged more quickly, thereby improving the cleaning effect of the inner wall of the threaded tube.

[0006] To solve the above-mentioned technical problems, this utility model provides a device for cleaning the inner wall of a ventilator threaded tube, comprising:

[0007] A spray pipe is rotatably inserted into a threaded pipe. The outer wall of the spray pipe is provided with multiple rows of nozzles and brushes at intervals for flushing the inner wall of the threaded pipe.

[0008] Clamping components are respectively disposed at both ends of the spray pipe for clamping and fixing the two ends of the threaded pipe;

[0009] The liquid outlet is located on the clamping assembly and is connected to the threaded tube;

[0010] The liquid inlet structure is rotatably connected to one end of the spray pipe and is used to deliver cleaning liquid to the spray pipe;

[0011] A drive mechanism, detachably connected to the other end of the spray pipe, is used to drive the spray pipe to rotate axially.

[0012] Preferably, in the above scheme, the clamping assembly includes an inner tube, an outer tube, clamping plates, and a ring sleeve. The end of the threaded tube is sleeved between the inner tube and the outer tube. A plurality of clamping plates are arranged in a circumferential array at one end of the outer tube. One end of the ring sleeve is threadedly connected to one end of the outer tube, and the other end is sleeved outside the clamping plate and abuts against the outer wall of the clamping plate. When the ring sleeve moves toward the other end of the outer tube, it can squeeze the clamping plate to bend inward, so that the end of the threaded tube is clamped and fixed on the inner tube.

[0013] Preferably, in the above scheme, the driving mechanism includes a driving component and a transmission component. One end of each of the plurality of spray pipes is rotatably connected to the liquid inlet structure, and the other end is detachably connected to the transmission component. The driving component drives the spray pipes to rotate axially through the transmission component.

[0014] Preferably, in the above scheme, the liquid inlet structure includes a liquid storage box and a matching infusion connector and interface. The interface is located on the side of the liquid storage box and is detachably connected to the infusion connector. One end of each of the multiple spray pipes is rotatably connected to the liquid storage box and communicates with each other.

[0015] Preferably, in the above scheme, the driving component includes a driving gear, the transmission component includes a transmission gear and a plurality of driven gears, the driving gear meshes with the transmission gear, the transmission gear meshes with the plurality of driven gears respectively, and the driven gear is detachably connected to the other end of the spray pipe.

[0016] Preferably, in the above scheme, the spray pipe includes a liquid inlet and a polygonal prism. The liquid inlet is located at one end of the spray pipe and is connected to the liquid inlet structure. The polygonal prism is located at the other end of the spray pipe. The driven gear has a groove that matches the polygonal prism. The polygonal prism and the groove are detachably connected.

[0017] Preferably, the above solution further includes a cabinet and unit frames, with multiple unit frames vertically spaced apart inside the cabinet. The drive assembly and the infusion connector are respectively located on the inner wall of the cabinet, and the transmission assembly and the liquid storage box are respectively installed at both ends of the unit frames.

[0018] Preferably, in the above solution, the cabinet includes shelves and limiting blocks. The shelves match the unit frame and are inclinedly arranged on the side wall of the cabinet. The limiting blocks are located at the front end of the shelves near both ends of the unit frame to prevent the unit frame from moving forward.

[0019] Preferably, in the above scheme, the cabinet further includes a drainage trough and a drainage outlet, the horizontal height of one end of the shelf is lower than the horizontal height of the other end, the drainage trough is located at one end of the shelf and below the liquid outlet, and the drainage outlet is located in the middle of the bottom wall of the cabinet.

[0020] Preferably, the above solution further includes a rinsing mechanism disposed on the inner wall of the cabinet for rinsing the outer wall of the threaded pipe.

[0021] Compared with existing technologies, this utility model has the following beneficial effects:

[0022] 1. A device for cleaning the inner wall of a ventilator threaded tube according to the present invention includes a spray pipe, a clamping assembly, a liquid outlet, a liquid inlet structure, and a driving mechanism. The spray pipe is axially rotatable and inserted into the threaded tube. The outer wall of the spray pipe is provided with multiple rows of nozzles and brushes at intervals for flushing the inner wall of the threaded tube. The clamping assembly is respectively located at both ends of the spray pipe for clamping and fixing the two ends of the threaded tube. The driving mechanism drives the spray pipe to rotate axially to flush the inner wall of the threaded tube, which can accelerate the discharge of internal cleaning fluid and improve the cleaning effect of the inner wall of the threaded tube.

[0023] 2. The clamping assembly of this utility model includes an inner tube, an outer tube, clamping plates, and a ring sleeve. The end of the threaded tube is sleeved between the inner tube and the outer tube. Multiple clamping plates are arranged in a circumferential array at one end of the outer tube. One end of the ring sleeve is threadedly connected to one end of the outer tube, and the other end is sleeved outside the clamping plates and abuts against the outer wall of the clamping plates. When the ring sleeve moves to the other end of the outer tube, it can squeeze the clamping plates to bend inward, so that the end of the threaded tube is clamped and fixed on the inner tube.

[0024] 3. In this utility model, multiple unit frames are vertically spaced and installed inside the cabinet. The drive component and infusion connector are respectively located on the inner wall of the cabinet, and the transmission component and liquid storage box are respectively installed at both ends of the unit frame. Using unit frames makes assembly and transportation more convenient.

[0025] 4. The cabinet in this utility model includes shelves and limiting blocks. The shelves match the unit frame and are inclinedly set on the side wall of the cabinet to facilitate the accelerated discharge of cleaning fluid in the threaded pipe. The limiting blocks are set at the front end of the shelves near both ends of the unit frame to prevent the unit frame from moving forward and to ensure that the drive gear meshes with the transmission gear and that the infusion connector and interface are completely connected and sealed. Attached Figure Description

[0026] Figure 1This is a schematic diagram of the structure of a ventilator threaded tube cleaning device according to the present invention.

[0027] Figure 2 This utility model Figure 1 A magnified view of part A in the image.

[0028] Figure 3 This is a schematic diagram of the internal structure of the cabinet of this utility model.

[0029] Figure 4 This utility model Figure 3 A magnified view of part B in the image.

[0030] Figure 5 This is a schematic diagram of the empty structure of the unit frame of this utility model.

[0031] Figure 6 This is a first-view assembly structure diagram of the unit frame of this utility model.

[0032] Figure 7 This is a schematic diagram of the assembly structure of the unit frame of this utility model from a second perspective.

[0033] Figure 8 This is a schematic diagram of the external structure of the transmission component of this utility model.

[0034] Figure 9 This is a schematic diagram of the assembly structure of the transmission gear and driven gear of this utility model.

[0035] Figure 10 This is a schematic diagram of the structure of the spray pipe of this utility model.

[0036] Figure 11 This is a schematic diagram of the assembly structure of the spray pipe and threaded pipe of this utility model.

[0037] Figure 12 This is a first-view structural schematic diagram of the liquid inlet structure of this utility model.

[0038] Figure 13 This is a second-view structural schematic diagram of the liquid inlet structure of this utility model.

[0039] Among them, 1-spray pipe, 11-spray head, 12-brush, 13-liquid inlet, 14-polygonal prism, 2-threaded pipe, 3-clamping assembly, 31-inner pipe, 32-outer pipe, 33-clamping plate, 34-ring sleeve, 4-liquid outlet, 5-liquid inlet structure, 51-liquid storage box, 52-infusion connector, 53-interface, 6-drive mechanism, 61-drive assembly, 611-drive gear, 62-transmission assembly, 621-transmission gear, 622-driven gear, 7-cabinet, 71-shelf, 72-limiting block, 73-drainage trough, 74-drain outlet, 8-unit frame, 9-rinsing mechanism. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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 utility model 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 utility model.

[0042] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first," "second," and "third" are used in the description, they are for descriptive purposes and to distinguish technical features, and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will now be described based on its overall structure.

[0044] like Figure 1 , Figure 10 and Figure 11As shown, this utility model discloses an inner wall cleaning device for a ventilator threaded tube, including a spray pipe 1, a clamping assembly 3, a liquid outlet 4, a liquid inlet structure 5, and a driving mechanism 6. The spray pipe 1 is axially rotatable and inserted into the threaded tube 2. Multiple rows of nozzles 11 and brushes 12 are spaced apart on the outer wall of the spray pipe 1 for flushing the inner wall of the threaded tube 2. The clamping assembly 3 is located at both ends of the spray pipe 1 for clamping and fixing both ends of the threaded tube 2. The liquid outlet 4 is located on the clamping assembly 3 and communicates with the threaded tube 2 for discharging the cleaning fluid from the threaded tube 2 to the outside. The liquid inlet structure 5 is rotatably connected to one end of the spray pipe 1 and is used to supply cleaning fluid to the spray pipe 1. The driving mechanism 6 is detachably connected to the other end of the spray pipe 1 for driving the spray pipe 1 to rotate axially. In this embodiment, the driving mechanism 6 drives the spray pipe 1 to rotate axially, thereby flushing the inner wall of the threaded tube 2, accelerating the discharge of internal cleaning fluid, and improving the cleaning effect of the inner wall of the threaded tube 2.

[0045] It is worth noting that one end of the spray pipe 1 is rotatably sealed to the liquid inlet structure 5, which facilitates the liquid inlet structure 5 to deliver the cleaning liquid into the spray pipe 1. The drive mechanism 6 is detachably connected to the other end of the spray pipe 1, which facilitates the assembly or disassembly of the threaded pipe 2 from the other end of the spray pipe 1.

[0046] like Figure 8 , Figure 12 and Figure 13 As shown, the clamping assembly 3 includes an inner tube 31, an outer tube 32, clamping plates 33, and a ring 34. The end of the threaded tube 2 is sleeved between the inner tube 31 and the outer tube 32. Multiple clamping plates 33 are arranged in a circumferential array at one end of the outer tube 32. One end of the ring 34 is threaded to one end of the outer tube 32, and the other end is sleeved outside the clamping plates 33 and abuts against the outer wall of the clamping plates 33. When the ring 34 moves to the other end of the outer tube 32, it can squeeze the clamping plates 33 to bend inward, so that the end of the threaded tube 2 is clamped and fixed on the inner tube 31. Specifically, the clamping plates 33 can be made of rubber material in a wedge shape. The other end of the ring 34 is set with a narrowed opening that matches the wedge shape. Tightening the ring 34 can squeeze the clamping plates 33 to bend inward and clamp and fix the end of the threaded tube 2. Loosening the ring 34 can cause the clamping plates 33 to spring back outward, releasing the clamping of the end of the threaded tube 2.

[0047] like Figure 3 , Figure 6 and Figure 7 As shown, the driving mechanism 6 in this embodiment includes a driving component 61 and a transmission component 62. One end of each of the plurality of spray pipes 1 is rotatably connected to the liquid inlet structure 5, and the other end is detachably connected to the transmission component 62. The driving component 61 drives the spray pipes 1 to rotate axially through the transmission component 62. Further reference Figure 2 , Figure 9The drive assembly 61 includes a drive gear 611, and the transmission assembly 62 includes a transmission gear 621 and a plurality of driven gears 622. The drive gear 611 meshes with the transmission gear 621, and the transmission gears 621 mesh with the plurality of driven gears 622 respectively. The driven gears 622 are detachably connected to the other end of the spray pipe 1. (Continue to refer to...) Figure 10 , Figure 11 The spray pipe 1 includes a liquid inlet 13 and a polygonal prism 14. The liquid inlet 13 is located at one end of the spray pipe 1 and is connected to the liquid inlet structure 5. The polygonal prism 14 is located at the other end of the spray pipe 1. The driven gear 622 has a groove that matches the polygonal prism 14, and the polygonal prism 14 is detachably connected to the groove. It is worth noting that the drive mechanism 6 in this embodiment is equipped with a motor for driving the drive gear 611 to rotate. By setting the transmission gear 621 to mesh with multiple driven gears 622 respectively, multiple spray pipes 1 can be driven to rotate axially at the same time, and multiple threaded pipes 2 can be cleaned simultaneously.

[0048] like Figure 4 , Figure 7 and Figure 12 As shown, the liquid inlet structure 5 in this embodiment includes a liquid storage box 51 and matching inlet connectors 52 and 53. The 53 is located on the side of the liquid storage box 51 and is detachably connected to the inlet connector 52. One end of each of the multiple spray pipes 1 is rotatably connected to the liquid storage box 51 and communicates with each other. Specifically, the inlet connector 52 is shaped like a gourd spout, and the 53 is a rubber structure matching the gourd spout, facilitating insertion and removal between the inlet connector 52 and the 53. When the inlet connector 52 injects cleaning fluid into the liquid storage box 51, the 53 provides a good seal. It should be understood that this device typically includes a control system, and the inlet connector 52 is equipped with a switch assembly electrically connected to the control system. The inlet connector 52 is connected to the pipeline conveying the cleaning fluid, and the flow rate is controlled by the control system.

[0049] like Figure 1 , Figure 3 and Figure 5 As shown, this embodiment also includes a cabinet 7 and unit frames 8. Multiple unit frames 8 are vertically spaced within the cabinet 7. The drive assembly 61 and the infusion connector 52 are respectively located on the inner wall of the cabinet 7, and the transmission assembly 62 and the liquid storage box 51 are respectively installed at both ends of the unit frames 8. Specifically, the cabinet 7 includes shelves 71 and limiting blocks 72. The shelves 71 match the unit frames 8 and are inclinedly arranged on the side wall of the cabinet 7 to facilitate the accelerated discharge of cleaning fluid from the threaded tube 2. The limiting blocks 72 are located at the front end of the shelves 71 near both ends of the unit frames 8 to prevent the unit frames 8 from moving forward.

[0050] Continue to refer to Figure 6 , Figure 7In this embodiment, the transmission assembly 62 includes four driven gears 622, which can simultaneously drive the four spray pipes 1 to rotate axially and clean the four threaded pipes 2. During use, first ensure that the inlet 13 ends of the four spray pipes 1 are rotatably and sealingly connected to the storage box 51. Then, insert the threaded pipe 2 through the polygonal prism 14 end of the spray pipe 1 and use the clamping assembly 3 on the storage box 51 to fix one end of the threaded pipe 2. Next, assemble the transmission assembly 62 onto the polygonal prism 14 end of the spray pipe 1, ensuring that the polygonal prism 14 is inserted into the groove of the driven gear 622, and use the clamping assembly 62... The clamping assembly 3 fixes the other end of the threaded tube 2. The assembled transmission assembly 62, spray pipe 1, threaded tube 2 and liquid storage box 51 are then assembled into the unit frame 8 to form a cleaning unit that is easy to disassemble or install. Finally, the assembled unit frame 8 is placed on the shelf 71 and moved into position where the drive gear 611 meshes with the transmission gear 621 and the infusion connector 52 and interface 53 are fully connected and sealed. The limiting block 72 is used to prevent the unit frame 8, transmission assembly 62 and liquid storage box 51 from moving forward, but it will not affect the normal picking and putting operation of the unit frame 8.

[0051] Continue to refer to Figure 3 , Figure 4 The cabinet 7 also includes a drainage trough 73 and a drain outlet 74. The horizontal height of one end of the shelf 71 is lower than that of the other end. The drainage trough 73 is located at one end of the shelf 71 and below the liquid outlet 4. The drain outlet 74 is located in the middle of the bottom wall of the cabinet 7. Specifically, the infusion connector 52 is located near the shelf 71 at the lower horizontal height. When the assembled unit frame 8 is placed on the shelf 71, one end of the unit frame 8 containing the liquid storage box 51 tilts downward. The cleaning fluid in the threaded tube 2 is discharged from the liquid outlet 4 near the liquid storage box 51 and flows through the drainage trough 73 below before flowing from the rear side wall to the bottom drain outlet.

[0052] In addition, this embodiment also includes a rinsing mechanism 9, which is located on the inner wall of the cabinet 7 and is used to rinse the outer wall of the threaded pipe 2. Specifically, the rinsing mechanism 9 may include rotating nozzles located on the top wall and the rear side wall, which can spray cleaning fluid onto the outer wall of the threaded pipe 2.

[0053] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A device for cleaning the inner wall of a ventilator threaded tubing, characterized in that, include: A spray pipe is rotatably inserted into a threaded pipe. The outer wall of the spray pipe is provided with multiple rows of nozzles and brushes at intervals for flushing the inner wall of the threaded pipe. Clamping components are respectively disposed at both ends of the spray pipe for clamping and fixing the two ends of the threaded pipe; The liquid outlet is located on the clamping assembly and is connected to the threaded tube; The liquid inlet structure is rotatably connected to one end of the spray pipe and is used to deliver cleaning liquid to the spray pipe; A drive mechanism, detachably connected to the other end of the spray pipe, is used to drive the spray pipe to rotate axially.

2. The device for cleaning the inner wall of a ventilator threaded tube according to claim 1, characterized in that, The clamping assembly includes an inner tube, an outer tube, clamping plates, and a ring sleeve. The end of the threaded tube is sleeved between the inner tube and the outer tube. A plurality of clamping plates are arranged in a circumferential array at one end of the outer tube. One end of the ring sleeve is threaded to one end of the outer tube, and the other end is sleeved outside the clamping plate and abuts against the outer wall of the clamping plate. When the ring sleeve moves toward the other end of the outer tube, it can squeeze the clamping plate to bend inward, so that the end of the threaded tube is clamped and fixed on the inner tube.

3. The device for cleaning the inner wall of a ventilator threaded tube according to claim 1, characterized in that, The driving mechanism includes a driving component and a transmission component. One end of each of the multiple spray pipes is rotatably connected to the liquid inlet structure, and the other end is detachably connected to the transmission component. The driving component drives the spray pipes to rotate axially through the transmission component.

4. The device for cleaning the inner wall of a ventilator threaded tube according to claim 3, characterized in that, The liquid inlet structure includes a liquid storage box and matching infusion connectors and interfaces. The interfaces are located on the side of the liquid storage box and are detachably connected to the infusion connectors. One end of each of the multiple spray pipes is rotatably connected to the liquid storage box and communicates with each other.

5. The device for cleaning the inner wall of a ventilator threaded tube according to claim 3, characterized in that, The drive assembly includes a drive gear, and the transmission assembly includes a transmission gear and a plurality of driven gears. The drive gear meshes with the transmission gear, and the transmission gear meshes with the plurality of driven gears respectively. The driven gears are detachably connected to the other end of the spray pipe.

6. The device for cleaning the inner wall of a ventilator threaded tube according to claim 5, characterized in that, The spray pipe includes a liquid inlet and a polygonal prism. The liquid inlet is located at one end of the spray pipe and is connected to the liquid inlet structure. The polygonal prism is located at the other end of the spray pipe. The driven gear has a groove that matches the polygonal prism. The polygonal prism and the groove are detachably connected.

7. The device for cleaning the inner wall of a ventilator threaded tube according to claim 4, characterized in that, It also includes a cabinet and unit frames, with multiple unit frames vertically spaced apart inside the cabinet. The drive assembly and the infusion connector are respectively located on the inner wall of the cabinet, and the transmission assembly and the liquid storage box are respectively installed at both ends of the unit frames.

8. The device for cleaning the inner wall of a ventilator threaded tube according to claim 7, characterized in that, The cabinet includes shelves and limiting blocks. The shelves match the unit frame and are inclinedly arranged on the side wall of the cabinet. The limiting blocks are located at the front end of the shelves near both ends of the unit frame to prevent the unit frame from moving forward.

9. The device for cleaning the inner wall of a ventilator threaded tube according to claim 8, characterized in that, The cabinet also includes a drainage trough and a drain outlet. The horizontal height of one end of the shelf is lower than the horizontal height of the other end. The drainage trough is located at one end of the shelf and below the liquid outlet. The drain outlet is located in the middle of the bottom wall of the cabinet.

10. The device for cleaning the inner wall of a ventilator threaded tube according to claim 7, characterized in that, It also includes a rinsing mechanism, located on the inner wall of the cabinet, for rinsing the outer wall of the threaded pipe.