Cleaning machine for air return duct of spinning central air conditioner

Abstract

The utility model relates to a cleaning machine used for a spinning central air conditioner air return duct, the inner wall of the air return duct at least comprises two opposite side wall faces and a bottom face located between the two side wall faces, the cleaning machine comprises a driving winding mechanism, the driving winding mechanism is arranged outside the air return duct and connected with a driving rope, the driving rope extends into the air return duct, and the driving winding mechanism is connected with the bottom face. The driving winding mechanism is used for winding the driving rope so that the driving rope can move in the air return duct. The sweeping mechanism is arranged on the bottom face of the air return duct and connected with the driving rope, and the sweeping mechanism reciprocates in the front-back direction of the air return duct under traction of the driving rope so as to sweep the inner wall of the air return duct; and the guide assembly is arranged in the air return duct to guide the moving direction of the driving rope. According to the cleaning machine, manual operation is omitted, automatic cleaning can be achieved, production is not affected, the cleaning mechanism in the air return duct does not need to be powered on, and potential safety hazards do not exist.

Description

Technical Field

[0001] The utility model relates to the technical field of central air conditioners in textile mills, and particularly to a cleaning machine for the air return ditch of a textile central air conditioner. Background Art

[0002] The air return ditch of the air conditioner in a spinning mill is an important part of the air duct system in the factory. Due to being set on the ground and in a low negative pressure environment all year round, tiny cotton fiber generated during the production process of textile equipment will gradually accumulate in the air return ditch over time. If not removed in time, it will form a fire safety hazard. At the same time, since the air return ditches are interconnected and spread throughout all production workshops of the spinning mill, once a fire breaks out, it will spread to all production workshops in a short time, causing extremely serious and major safety accidents. Currently, in textile mills, the air return ditches are mainly cleaned regularly by manpower in a timely manner.

[0003] What is special about a textile mill is that the air and workshops in the textile mill are filled with combustible cotton fluffs, especially in the air return ditch where the space is narrow and there is an accumulation of cotton fluffs. Therefore, due to high fire prevention requirements, no electrically charged devices can be used in the air return ditch of a textile mill. However, in the prior art, devices such as the invention application number CN202010508244.6 of "A Cleaning Device for the Air Outlet Duct of a Central Air Conditioner" and the invention application number CN201820548154.8 of "A Cleaning Robot for Air Conditioner Ducts" are all duct cleaning devices based on built-in electric drive devices. Their characteristics are that they are simple, flexible, easy to use, and applicable to different duct paths. Their disadvantages are that they use electrical appliances for driving inside the duct and place the electrical appliances under ducts with high fire prevention requirements, which poses a fire safety hazard.

[0004] Based on this, it is necessary to design a cleaning machine that uses a mechanical transmission method to drive a cleaning mechanism to clean cotton fibers in the ditch, avoiding the potential fire hazard of electric sparks caused by electrical appliances and saving labor costs at the same time. Content of the Utility Model

[0005] Based on this, the purpose of the utility model is to overcome the deficiencies of the prior art and provide a cleaning machine for the air return ditch of a textile central air conditioner.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A cleaning machine for the air return ditch of a textile central air conditioner, the inner wall of the air return ditch at least includes two opposite side wall surfaces and a bottom surface located between the two side wall surfaces, and the cleaning machine includes:

[0008] A driving winding mechanism is arranged outside the return air duct and connected with a driving cable. The driving cable extends into the return air duct. The driving winding mechanism is used for winding the driving cable so that the driving cable moves in the return air duct.

[0009] A cleaning mechanism is arranged on the bottom surface of the return air duct and connected with the driving cable. The cleaning mechanism is driven by the driving cable and reciprocates in the front-back direction of the return air duct to clean the inner wall of the return air duct.

[0010] A guiding component is arranged in the return air duct to guide the moving direction of the driving cable.

[0011] As can be seen from the above settings, the driving winding mechanism of the cleaning machine in this embodiment is arranged in an environment with low fire protection requirements outside the return air duct. Through a mechanical method of driving the driving cable to move in the guiding component outside, the power is transmitted to the cleaning mechanism in the return air duct, so that the cleaning mechanism reciprocates in the return air duct to clean the inner wall of the return air duct. This not only eliminates manual operation and can automatically clean without affecting production, but also the cleaning mechanism in the return air duct does not need to be electrified, thus there is no potential safety hazard.

[0012] As an implementation manner, the cleaning mechanism includes a vehicle frame, side brushes, a cotton shoveling frame and a linkage member. The two side brushes are respectively arranged on opposite sides of the vehicle frame for cleaning the two side wall surfaces. The cotton shoveling frame is rotatably connected to the vehicle frame and is located between the two side brushes. A first bottom brush is arranged at the bottom end of the cotton shoveling frame. The linkage member is arranged on the vehicle frame and links the cotton shoveling frame. The driving cable is connected to the linkage member.

[0013] When the driving cable pulls the linkage member forward, the linkage member drives the cotton shoveling frame to rotate relative to the vehicle frame, so that the first bottom brush contacts the bottom surface and the cleaning mechanism is pulled forward.

[0014] When the driving cable pulls the linkage member backward, the linkage member drives the cotton shoveling frame to rotate relative to the vehicle frame, so that the first bottom brush leaves the bottom surface and the cleaning mechanism is pulled backward.

[0015] As an implementation manner, the cleaning mechanism further includes a front positioning plate and a first elastic member. The front positioning plates are respectively hinged to opposite sides of the front part of the vehicle frame. The front positioning plates have front side pressing wheels. The side brushes are installed on the front positioning plates. The first elastic member is used to apply an elastic force to the front positioning plates so that the front positioning plates rotate towards the side wall surfaces they approach until the front side pressing wheels abut against the side wall surfaces.

[0016] As an implementation manner, the driving cable rope includes a first cable rope and a second cable rope. While the driving winding mechanism winds up the first cable rope, it releases the second cable rope. While the driving winding mechanism releases the first cable rope, it winds up the second cable rope. When the first cable rope is wound up, it can pull the cleaning mechanism to move forward. When the second cable rope is wound up, it can pull the cleaning mechanism to move backward.

[0017] As an implementation manner, the linkage member includes a pull rod seat, a sliding pull rod, a connecting frame, and a connecting rod. The pull rod seat is fixedly arranged on the vehicle frame. The sliding pull rod is slidably arranged on the pull rod seat. The front end of the sliding pull rod is connected to the first cable rope, and the rear end is connected to the connecting frame. One end of the connecting rod is hinged to the connecting frame, and the other end is hinged to the top end of the cotton shoveling frame. The connecting frame is connected to the second cable rope.

[0018] As an implementation manner, the connecting frame is connected to the second cable rope through a cable tightener.

[0019] As an implementation manner, the cleaning mechanism further includes a rear positioning plate and a second elastic member. One of the opposite sides at the rear of the vehicle frame is hinged with a rear positioning plate. The rear positioning plate has a rear side pressing wheel. The second elastic member is used to apply an elastic force to the rear positioning plate so that the rear positioning plate rotates towards the side wall surface it approaches until the rear side pressing wheel abuts against the side wall surface.

[0020] As an implementation manner, the guiding assembly includes a top pulley mechanism and a bottom pulley mechanism. The top pulley mechanism is arranged at the front and rear ends above the air return ditch. The bottom pulley mechanism is arranged at the front and rear ends below the air return ditch. The driving cable rope passes through the top pulley mechanism and the bottom pulley mechanism and then is connected to the cleaning mechanism.

[0021] As an implementation manner, the top pulley mechanism includes a first pulley frame, a first pulley, a cotton scraping piece, and a pressing piece. The first pulley is rotatably connected to the first pulley frame. The pressing piece presses the cotton scraping piece on the first pulley frame and encloses a rope passing hole. The driving cable rope passes through the rope passing hole and then is wound around the first pulley.

[0022] As an implementation manner, the bottom pulley mechanism includes a second pulley frame, a second pulley, a flexible shaft, and a brush disc. The second pulley and the brush disc are rotatably connected to the second pulley frame. The two ends of the flexible shaft are respectively connected to the second pulley and the brush disc. When the second pulley rotates, it drives the brush disc to rotate through the flexible shaft. The driving cable rope passes through the brush disc and then is wound around the second pulley.

[0023] For better understanding and implementation, the present invention will be described in detail below with reference to the accompanying drawings. Description of the Drawings

[0024] Figure 1 Schematic diagram of the air return channel and the cleaning machine in the embodiment of the present application;

[0025] Figure 2 is Figure 1 Schematic diagram of the structure when a part of the middle air return channel is cut open;

[0026] Figure 3 Schematic diagram of the cleaning machine in the embodiment of the present application;

[0027] Figure 4 Schematic diagram of the driving winding mechanism in the embodiment of the present application;

[0028] Figure 5 Schematic diagram of the cleaning mechanism from one perspective in the embodiment of the present application;

[0029] Figure 6 Schematic diagram of the cleaning mechanism from another perspective in the embodiment of the present application;

[0030] Figure 7 Schematic diagram of the top pulley mechanism in the embodiment of the present application;

[0031] Figure 8 Schematic diagram of the bottom pulley mechanism in the embodiment of the present application;

[0032] Figure 9 Schematic diagram of the steering pulley mechanism in the embodiment of the present application;

[0033] Explanation of reference numerals:

[0034] 1. Driving winding mechanism; 10. Driving cable; 101. First cable; 102. Second cable; 19. Mounting bracket; 11. Motor; 12. Gearbox; 13. Travel controller; 14. Transparent observation window; 15. Main winding cylinder; 16. Chain and sprocket; 17. Auxiliary winding cylinder; 18. Anti - detachment cable pressing rod; 2. Cleaning mechanism; 21. Frame; 22. Side brush; 23. Cotton shoveling frame; 231. First bottom brush; 24. Linkage member; 241. Pull rod seat; 242. Sliding pull rod; 243. Connecting frame; 2431. Cable tightener; 244. Connecting rod; 25. Front positioning plate; 251. Front side pressing wheel; 252. Second bottom brush; 26. First elastic member; 27. Rear positioning plate; 271. Rear side pressing wheel; 28. Second elastic member; 3. Guide assembly; 31. Top pulley mechanism; 311. First pulley frame; 312. First pulley; 313. Cotton scraping piece; 314. Pressing piece; 315. Cable passing hole; 32. Bottom pulley mechanism; 321. Second pulley frame; 322. Second pulley; 323. Flexible shaft; 324. Brush disc; 33. Steering pulley mechanism; 4. Air return channel; 41. Side wall surface; 42. Bottom surface. Detailed implementation manners

[0035] To further illustrate each embodiment, the present utility model provides attached drawings. These attached drawings are part of the disclosure of the present utility model, mainly used to illustrate the embodiments, and can cooperate with the relevant descriptions in the specification to explain the operating principle of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present utility model.

[0036] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the attached drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0037] Please refer to Figures 1 to 8 , this embodiment provides a cleaning machine for the return air duct 4 of a textile central air conditioner. The cleaning machine in this embodiment includes a driving winding mechanism 1, a cleaning mechanism 2, and a guiding assembly 3. Among them, in the prior art, the return air duct 4 is usually a long strip channel structure, and the inner wall of the return air duct 4 that needs to be cleaned at least includes two opposite side wall surfaces 41 and a bottom surface 42 located between the two side wall surfaces 41.

[0038] The driving winding mechanism 1 of this embodiment is arranged outside the return air duct 4 and is connected with a driving cable 10. The driving cable 10 extends into the return air duct 4, and the driving winding mechanism 1 is used to wind the driving cable 10 so that the driving cable 10 moves in the return air duct 4.

[0039] The cleaning mechanism 2 is arranged on the bottom surface 42 of the return air duct 4 and is connected with the driving cable 10. The cleaning mechanism 2 is driven by the driving cable 10 to reciprocate along the front and back directions of the return air duct 4 to clean the inner wall of the return air duct 4.

[0040] The guiding assembly 3 is arranged in the return air duct 4 to guide the moving direction of the driving cable 10, so that the driving cable 10 can drive the cleaning mechanism 2 to reciprocate along the front and back directions of the return air duct 4 when moving.

[0041] As can be seen from the above settings, the driving and winding mechanism 1 of the cleaning machine in this embodiment is arranged in an environment with low fire protection requirements outside the return air duct 4. By mechanically driving the driving cable 10 to move under the guidance of the guiding component 3 outside, the power is transmitted to the cleaning mechanism 2 in the return air duct 4, so that the cleaning mechanism 2 reciprocates in the return air duct 4 to clean the inner wall of the return air duct 4. This not only eliminates manual operation and can automatically clean without affecting production, but also the cleaning mechanism 2 in the return air duct 4 does not need to be electrified, thus eliminating potential safety hazards.

[0042] Among them, the driving and winding mechanism 1 can have various setting methods as long as it can play the role of winding the driving cable 10. Preferably, in this embodiment, the driving and winding mechanism 1 includes a mounting bracket 19 and a motor 11, a gearbox 12, a stroke controller 13, a transparent observation window 14, a main winding cylinder 15, a chain and sprocket 16, a secondary winding cylinder 17 and an anti-off cable pressing rod 18 arranged on the mounting bracket 19. The motor 11 is drivingly connected to the main winding cylinder 15 through the gearbox 12. The main winding cylinder 15 is drivingly connected to the secondary winding cylinder 17 through the chain and sprocket 16. The main winding cylinder 15 and the secondary winding cylinder 17 wind the driving cable 10. The stroke controller 13 is electrically connected to the motor 11 to control the forward and reverse rotation of the motor 11. The transparent observation window 14 is installed on the mounting bracket 19 at a position corresponding to the main winding cylinder 15 for the operator to observe the condition of the main winding cylinder 15. The anti-off cable pressing rod 18 can press the driving cable 10 on the main winding cylinder 15 and the secondary winding cylinder 17 to prevent cable detachment.

[0043] Specifically, in this embodiment, the driving cable 10 is a steel cable. The driving cable 10 includes a first cable 101 and a second cable 102. The first cable 101 is connected to the main winding cylinder 15, and the second cable 102 is connected to the secondary winding cylinder 17. When the motor 11 is energized to rotate forward, it is output to the main winding cylinder through the gearbox 12 to make it rotate forward. At the same time, the secondary winding cylinder is synchronously rotated through the chain and sprocket 16. At this time, the first cable 101 is wound and tightened by the main winding cylinder 15, and the second cable 102 is released and relaxed by the secondary winding cylinder 17. When the motor 11 is energized to rotate reversely, it is output to the main winding cylinder through the gearbox 12 to make it rotate reversely. At the same time, the secondary winding cylinder is synchronously rotated through the chain and sprocket 16. At this time, the first cable 101 is released and relaxed by the main winding cylinder 15, and the second cable 102 is wound and tightened by the secondary winding cylinder 17. That is to say, when the driving and winding mechanism 1 winds the first cable 101, it can release the second cable 102, and when the driving and winding mechanism 1 releases the first cable 101, it can wind the second cable 102. When the first cable 101 is wound, it can pull the cleaning mechanism 2 to move forward along the return air duct 4, and when the second cable 102 is wound, it can pull the cleaning mechanism 2 to move backward along the return air duct 4.

[0044] Preferably, in this embodiment, the cleaning mechanism 2 includes a vehicle frame 21, side brushes 22, a cotton shoveling frame 23, and a linkage member 24. Four wheels are provided at the four corners of the vehicle frame 21 for easy movement. The two side brushes 22 are respectively arranged on the opposite sides of the vehicle frame 21 for cleaning the two side wall surfaces 41. The cotton shoveling frame 23 is rotatably connected to the vehicle frame 21 and is located between the two side brushes 22. A first bottom brush 231 is provided at the bottom end of the cotton shoveling frame 23. The linkage member 24 is arranged on the vehicle frame 21 and links the cotton shoveling frame 23. The driving cable 10 is connected to the linkage member 24, so as to traction the entire cleaning mechanism 2 to move forward and backward by traction the linkage member 24.

[0045] Wherein, when the driving cable 10 (the first cable 101) traction the linkage member 24 forward, the linkage member 24 drives the cotton shoveling frame 23 to rotate forward relative to the vehicle frame 21, so that the first bottom brush 231 contacts the bottom surface 42, and the cleaning mechanism 2 is traction forward to move for cleaning;

[0046] When the driving cable 10 (the second cable 102) traction the linkage member 24 backward, the linkage member 24 drives the cotton shoveling frame 23 to rotate backward relative to the vehicle frame 21, so that the first bottom brush 231 leaves the bottom surface 42, and the cleaning mechanism 2 is traction backward to return to the initial position.

[0047] It can be seen from the above settings that when the cleaning mechanism 2 moves forward for cleaning, the side brushes 22 can sweep the cotton wadding on the side wall surface 41 and gather it towards the cotton shoveling frame 23 between the two side brushes 22. The cotton shoveling frame 23 rotates forward so that the first bottom brush 231 at its bottom end can clean the cotton wadding on the bottom surface 42, so that the cotton wadding gathers on the cotton shoveling frame 23. When the cleaning mechanism 2 moves to the front end of the air return ditch 4, the worker can directly pick up the cotton wadding. After the cleaning is completed, the cleaning mechanism 2 moves backward to return to the initial position. At this time, the cotton shoveling frame 23 rotates backward so that the first bottom brush 231 at its bottom end rises and moves away from the bottom surface 42, thereby preventing the cotton wadding from being swept back to the initial position and avoiding repeated cleaning, greatly improving the cleaning efficiency. In this embodiment, the cleaning mechanism 2 can utilize the traction force of the driving cable 10 through the linkage of the linkage member 24, so that the first bottom brush 231 of the cotton shoveling frame 23 lowers for cleaning when moving forward and rises when moving backward without sweeping back.

[0048] Specifically, the linkage member 24 of this embodiment includes a rod seat 241, a sliding rod 242, a connecting frame 243 and a connecting rod 244. The rod seat 241 is fixedly arranged on the frame 21. The sliding rod 242 can be slidably arranged on the rod seat 241. The rod seat 241 has a front limit structure and a rear limit structure (not shown) for limiting the sliding rod 242. When the sliding rod 242 abuts against the front limit structure, it cannot continue to slide forward. Similarly, when the sliding rod 242 abuts against the rear limit structure, it cannot continue to slide backward. The front end of the sliding rod 242 is connected to the first cable 101, and the rear end is connected to the connecting frame 243. One end of the connecting rod 244 is hinged to the connecting frame 243, and the other end is hinged to the top of the cotton shoveling frame 23. The connecting frame 243 is connected to the second cable 102.

[0049] With such an arrangement, when the starting motor 11 is energized and rotates forward, the output to the main cable drum is transmitted through the gearbox 12 to make it rotate forward, and at the same time, the auxiliary cable drum is also synchronously rotated forward through the chain sprocket 16; further, the first cable 101 is wound and tightened and the second cable 102 is released and loosened, and the first cable 101 pulls the sliding rod 242 forward a short distance, at which time the connecting frame 243 moves accordingly to push the connecting rod 244 upward, and the cotton shoveling frame 23 rotates forward around the axis and is basically in a vertical state, and the first bottom brush 231 installed at its bottom end contacts the bottom surface 42 of the return air ditch 4; further, after the sliding rod 242 slides forward to abut the front limit structure, it supports the frame 21 to move the entire cleaning mechanism 2 forward to perform a cleaning movement.

[0050] After the forward cleaning work is completed, the stroke controller 13 reverses the motor 11, the main winding drum and the auxiliary winding drum reverse, the second cable 102 is wound and tightened, and the first cable 101 is released and relaxed, and the second cable 102 pulls the sliding rod 242 back a short distance through the connecting frame 243. At this time, the connecting rod 244 is lowered downward, and the cotton shoveling frame 23 rotates backward around the axis and is lifted up to a basically horizontal state. The first bottom brush 231 is out of contact with the bottom surface 42 of the return air ditch 4 at a height of about 7 cm; finally, after the sliding rod 242 slides backward to abut the rear limit structure, it supports the frame 21 and moves the entire cleaning mechanism 2 backward to the starting position.

[0051] The linkage component 24 arranged above is cleverly designed and has a simple structure, and can efficiently drive the movement of the cotton scraping frame 23 and the movement of the entire cleaning mechanism 2.

[0052] In order to better control the movement direction of the frame 21 and make it more stable during movement, with the function of adapting to the groove width of the self-adaptive return air groove 4 and automatic centering, preferably, the cleaning mechanism 2 further includes a front positioning plate 25 and a first elastic member 26. The front positioning plate 25 is hinged to each of the opposite sides of the front part of the frame 21. The front positioning plate 25 has a front side pressing wheel 251. The side brush 22 is installed on the front positioning plate 25. The first elastic member 26 is used to apply an elastic force to the front positioning plate 25 so that the front positioning plate 25 rotates towards the side wall surface 41 it approaches until the front side pressing wheel 251 abuts against the side wall surface 41. Through the cooperation of the front positioning plate 25 and the first elastic member 26, the front positioning plate 25 has a tendency to rotate towards the side wall surface 41 it approaches, so that the front side pressing wheel 251 always abuts against the side wall surface 41. In this way, both sides of the cleaning mechanism 2 have the front side pressing wheels 251 pressing against the side wall surface 41, and it can move more smoothly during movement, adapt to the return air grooves 4 with different groove widths, and make the entire frame 21 located at the middle position of the return air groove 4.

[0053] Among them, the first elastic member 26 is a spring, which can be sleeved on a screw. The screw is fixed on the frame 21. One end of the spring abuts against the head of the screw, and the other end abuts against the front positioning plate 25, so as to provide an elastic force to the front positioning plate 25.

[0054] Preferably, a second bottom brush 252 is further provided at the bottom end of the front positioning plate 25. The second bottom brush 252 can clean the cotton wadding on the bottom surface 42 of the return air groove 4 to clean the places that the first bottom brush 231 cannot clean, and improve the overall cleaning effect.

[0055] Furthermore, the cleaning mechanism 2 further includes a rear positioning plate 27 and a second elastic member 28. The rear positioning plate 27 is hinged to each of the opposite sides of the rear part of the frame 21. The rear positioning plate 27 has a rear side pressing wheel 271. The second elastic member 28 is used to apply an elastic force to the rear positioning plate 27 so that the rear positioning plate 27 rotates towards the side wall surface 41 it approaches until the rear side pressing wheel 271 abuts against the side wall surface 41. The principle and function of the rear positioning plate 27 and the second elastic member 28 can refer to the above-mentioned front positioning plate 25 and the first elastic member 26. In this way, the front side pressing wheel 251 and the rear side pressing wheel 271 respectively press against the side wall surface 41 on the front and rear sides of the cleaning mechanism 2. It can move more smoothly during movement, adapt to the return air grooves 4 with different groove widths, and make the entire frame 21 located at the middle position of the return air groove 4. Among them, the second elastic member 28 is a spring, which can be sleeved on a screw. The screw is fixed on the frame 21. One end of the spring abuts against the head of the screw, and the other end abuts against the rear positioning plate 27, so as to provide an elastic force to the rear positioning plate 27.

[0056] Preferably, the connecting frame 243 is connected to the second cable 102 through a cable tightener 2431. The cable tightener 2431 is a common structure in the prior art. Such a setting can adjust the tightness of the cable to avoid the difficulty of the movement of the cleaning mechanism 2 caused by inappropriate tightness of the cable.

[0057] Preferably, the guiding assembly 3 includes a top pulley mechanism 31 and a bottom pulley mechanism 32. The top pulley mechanism 31 is arranged at the front and rear ends above the return air duct 4, and the bottom pulley mechanism 32 is arranged at the front and rear ends below the return air duct 4. The driving cable 10 is connected to the cleaning mechanism 2 after passing through the top pulley mechanism 31 and the bottom pulley mechanism 32, so that the arrangement of the driving cable 10 in the return air duct 4 is more reasonable.

[0058] Specifically, the top pulley mechanism 31 includes a first pulley frame 311, a first pulley 312, a cotton scraping piece 313 and a pressing piece 314. The first pulley 312 is rotatably connected to the first pulley frame 311. The pressing piece 314 presses the cotton scraping piece 313 against the first pulley frame 311 and encloses a cable passing hole 315. The driving cable 10 passes through the cable passing hole 315 and then is wound around the first pulley 312. When the driving cable 10 passes through the cable passing hole 315, the cotton scraping piece 313 can scrape the cotton flocs on the cable to avoid the jamming failure caused by the cotton flocs entering the pulley and the winding drum.

[0059] Specifically, the bottom pulley mechanism 32 includes a second pulley frame 321, a second pulley 322, a flexible shaft 323 and a brush disc 324. The second pulley 322 and the brush disc 324 are rotatably connected to the second pulley frame 321. The two ends of the flexible shaft 323 are respectively connected to the second pulley 322 and the brush disc 324. When the second pulley 322 rotates, the brush disc 324 is driven to rotate through the flexible shaft 323. The driving cable 10 passes through the brush disc 324 and then is wound around the second pulley 322. The brush disc 324 can scrape the cotton flocs on the cable to avoid the jamming failure caused by the cotton flocs entering the pulley and the winding drum. When the driving cable 10 passes through the second pulley 322, the second pulley can be driven, so as to drive the brush disc 324 to rotate through the flexible shaft 323. In this way, the cleaning of the cable cotton flocs is realized through a pure mechanical structure, which is safe and efficient.

[0060] Preferably, in this embodiment, the guiding assembly 3 further includes a plurality of steering pulley mechanisms 33 arranged above the return air duct 4. The steering pulley mechanisms 33 can guide the direction of the driving cable 10. The plurality of steering pulley mechanisms 33 are located between the top pulley mechanisms 31. This makes the overall arrangement more reasonable and better guides the driving cable 10.

[0061] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model.

Claims

1. A cleaning machine for a return air ditch of a textile central air conditioner, wherein the inner wall of the return air ditch comprises at least two opposite side walls and a bottom surface located between the two side walls, characterized in that: The cleaning machine comprises: A driving winding mechanism is arranged outside the return air ditch and connected with a driving rope, the driving rope extends into the return air ditch, and the driving winding mechanism is used to wind the driving rope to move the driving rope in the return air ditch; A cleaning mechanism is arranged on the bottom surface of the return air ditch and connected to the driving cable. The cleaning mechanism moves back and forth along the front and rear directions of the return air ditch under the traction of the driving cable to clean the inner wall of the return air ditch; A guide assembly is arranged in the return air ditch to guide the moving direction of the driving cable.

2. The cleaning machine for the return air ditch of a textile central air conditioner according to claim 1 is characterized in that: The cleaning mechanism comprises a frame, side brushes, a cotton scraping frame and a linkage component, wherein the two side brushes are respectively arranged on opposite sides of the frame for cleaning the two side wall surfaces, the cotton scraping frame is rotatably connected to the frame and is located between the two side brushes, a first bottom brush is arranged at the bottom end of the cotton scraping frame, the linkage component is arranged on the frame and links the cotton scraping frame, and the driving cable is connected to the linkage component; When the driving cable pulls the linkage member forward, the linkage member drives the cotton scraping frame to rotate relative to the frame, so that the first bottom brush contacts the bottom surface and the cleaning mechanism is pulled forward; When the driving cable pulls the linkage component backward, the linkage component drives the cotton scraping frame to rotate relative to the frame, so that the first bottom brush leaves the bottom surface and the cleaning mechanism is pulled to move backward.

3. The cleaning machine for the return air ditch of a textile central air conditioner according to claim 2 is characterized in that: The cleaning mechanism also includes a front positioning plate and a first elastic member. The front positioning plate is hinged on each of the opposite sides of the front of the frame. The front positioning plate has a front pressure wheel. The side brush is installed on the front positioning plate. The first elastic member is used to apply an elastic force to the front positioning plate so that the front positioning plate rotates toward the side wall surface it is close to until the front pressure wheel abuts against the side wall surface.

4. The cleaning machine for the return air ditch of a textile central air conditioner according to claim 2 is characterized in that: The driving cable includes a first cable and a second cable. The driving winding mechanism reels the first cable while releasing the second cable. The driving winding mechanism releases the first cable while reeling in the second cable. When the first cable is reeled in, the cleaning mechanism can be pulled forward. When the second cable is reeled in, the cleaning mechanism can be pulled backward.

5. The cleaning machine for the return air ditch of a textile central air conditioner according to claim 4 is characterized in that: The linkage component includes a pull rod seat, a sliding pull rod, a connecting frame and a connecting rod. The pull rod seat is fixedly arranged on the frame, and the sliding pull rod can be slidably arranged on the pull rod seat forward and backward. The front end of the sliding pull rod is connected to the first cable, and the rear end is connected to the connecting frame. One end of the connecting rod is hinged to the connecting frame, and the other end is hinged to the top of the cotton shoveling frame. The connecting frame is connected to the second cable.

6. The cleaning machine for the return air ditch of a textile central air conditioner according to claim 5 is characterized by: The connecting frame is connected to the second cable via a rope tightener.

7. The cleaning machine for the return air ditch of a textile central air conditioner according to claim 3 is characterized by: The cleaning mechanism also includes a rear positioning plate and a second elastic member. The rear positioning plate is hinged on each of the opposite sides of the rear of the frame. The rear positioning plate has a rear pressure wheel. The second elastic member is used to apply an elastic force to the rear positioning plate so that the rear positioning plate rotates toward the side wall surface it is close to until the rear pressure wheel abuts against the side wall surface.

8. The cleaning machine for the return air ditch of a textile central air conditioner according to any one of claims 1 to 7, characterized in that: The guide assembly includes a top pulley mechanism and a bottom pulley mechanism, wherein the top pulley mechanism is arranged at the front and rear ends above the return air ditch, and the bottom pulley mechanism is arranged at the front and rear ends below the return air ditch, and the driving cable is connected to the cleaning mechanism after passing through the top pulley mechanism and the bottom pulley mechanism.

9. The cleaning machine for the return air ditch of a textile central air conditioner according to claim 8, characterized in that: The top pulley mechanism includes a first pulley frame, a first pulley, a cotton scraping sheet and a pressing sheet. The first pulley is rotatably connected to the first pulley frame. The pressing sheet presses the cotton scraping sheet onto the first pulley frame and surrounds a rope hole. The driving rope passes through the rope hole and is then wound around the first pulley.

10. The cleaning machine for the return air ditch of a textile central air conditioner according to claim 8, characterized in that: The bottom pulley mechanism includes a second pulley frame, a second pulley, a flexible shaft and a brush disc. The second pulley and the brush disc are rotatably connected to the second pulley frame. The two ends of the flexible shaft are respectively connected to the second pulley and the brush disc. When the second pulley rotates, the brush disc is driven to rotate through the flexible shaft. The driving cable passes through the brush disc and is wound around the second pulley.

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