Cleaning device for air pipe of central air conditioner

Abstract

The utility model relates to the technical field of air pipes of central air conditioners, in particular to a cleaning device for the air pipes of the central air conditioners, which comprises a device body, universal cleaning mechanisms are arranged on the surfaces of connecting pieces, and convenient-to-replace mechanisms are arranged on the surfaces of cleaning brushes and moving columns. And incrustation scale scraping mechanisms are arranged in the fixed plate and on the surface of the scraping plate. According to the cleaning device, the inner walls of air conditioner air pipe bodies with different diameters can be cleaned when the cleaning device is used, the universality of the cleaning device is higher when the cleaning device is used, scale adhering to the inner walls of the air conditioner air pipe bodies can be scraped off when the cleaning device is used, the cleaning effect of the cleaning device is better when the cleaning device is used, and the cleaning efficiency is improved. According to the cleaning device, the use requirement of a user can be better met, the user can conveniently replace the cleaning brush when the cleaning device is used, the cleaning device is more convenient to operate, and operation is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of central air-conditioning ducts, in particular to a cleaning device for central air-conditioning ducts. Background Art

[0002] Central air conditioners are generally not turned on in spring and autumn, which will cause a lot of dust to accumulate in the air duct. If the dust in the duct is not dealt with in time, the dust will be blown into the room from the air duct after the central air conditioner is turned on, seriously affecting the health of indoor personnel. Excessive dust accumulation will also affect the heat exchange efficiency of the central air conditioner. A cleaning device for central air conditioner ducts is now needed.

[0003] First, since the diameters of the air-conditioning duct bodies are different, the versatility of the cleaning device is relatively high. The existing cleaning devices are usually unable to clean the air-conditioning duct bodies of different diameters when in use. This makes it impossible for the cleaning device to clean the inner walls of the air-conditioning duct bodies of different diameters when in use, which reduces the versatility of the cleaning device when in use; secondly, some scale will stick to the inner wall of the air-conditioning duct body, and the existing cleaning devices do not have the function of scraping off the scale stuck to the inner wall of the air-conditioning duct body when in use, which reduces the cleaning effect of the cleaning device when in use and cannot meet the user's use needs; thirdly, the cleaning device needs to replace the cleaning brush regularly when in use, and the existing cleaning devices often have complicated replacement steps for replacing the cleaning brush, which makes the cleaning device inconvenient and inconvenient to operate. Utility Model Content

[0004] The purpose of the utility model is to provide a cleaning device for central air-conditioning ducts, so as to solve the problems proposed in the above-mentioned background technology that the cleaning device cannot clean air-conditioning duct bodies of different diameters when used, does not have the function of scraping off scale stuck on the inner wall of the air-conditioning duct body, and the replacement steps of the cleaning brush are often cumbersome.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cleaning device for a central air-conditioning duct, comprising a device body, an air-conditioning duct body is arranged on the surface of the device body, a control button is installed on the surface of the air-conditioning duct body, a connecting piece is arranged on one side of the device body, a cleaning brush for cleaning the inner wall of the air-conditioning duct body is arranged inside the device body, the cleaning brushes are respectively located on both sides of the device body, a fixing plate is installed on the surface of the device body, and a scraper for scraping off the scale stuck on the inner wall of the air-conditioning duct body is arranged on the surface of the fixing plate Plate, the scraper plate and the inner wall of the fixed plate slide with each other, the interior of the device body is provided with a movable column, the surface of the connecting piece is provided with a universal cleaning mechanism, the interior of the universal cleaning mechanism includes a fixed frame, a guide slider and a universal cleaning part, the surface of the cleaning brush and the movable column are provided with a convenient replacement mechanism, the interior of the convenient replacement mechanism includes a connecting block, a first magnet, a second magnet, a positioning card and a fixing groove, the interior of the fixed plate and the surface of the scraper plate are provided with a scale scraping mechanism, the interior of the scale scraping mechanism includes a driving motor, a shaft and a scale scraping group.

[0006] Preferably, a rotating motor is installed on the surface of the connecting piece, the input end of the rotating motor is electrically connected to the output end of the control button, the output end of the rotating motor is installed with a rotating shaft through a coupling, and the surface of the rotating shaft is fixed to the surface of the device body, the moving column and the inner wall of the device body are slidably matched with each other and extend to the outside of the device body, the inner wall of the device body is installed with a compression spring, and one end of the compression spring is fixed to the surface of the moving column.

[0007] Preferably, the universal cleaning part is arranged on the surface of the connecting member, and the universal cleaning part is composed of a movable frame and an electric push plate. The surface of the connecting member is installed with fixed frames with equal intervals, and a movable frame is arranged inside the fixed frame, and one end of the movable frame extends to the outside of the fixed frame.

[0008] Preferably, the surface of the movable frame is installed with a guide slider, and the guide slider and the inner wall of the fixed frame are slidably matched with each other. An electric push plate is installed inside the fixed frame, and the input end of the electric push plate is electrically connected to the output end of the control button, and the output end of the electric push plate is fixed to the surface of the movable frame, and the surface of the movable frame is in contact with the inner wall of the air conditioning duct body.

[0009] Preferably, the surface of the movable column is installed with a connecting block, the inner wall of the cleaning brush is opened with a fixing groove, the fixing groove and the surface of the connecting block are slidably matched with each other, and the surface of the connecting block is installed with a positioning card for preventing the cleaning brush from loosening.

[0010] Preferably, the positioning card and the inner wall of the cleaning brush are engaged with each other, the surface of the movable column is installed with a second magnet, the inner wall of the cleaning brush is installed with a first magnet, and the surfaces of the first magnet and the second magnet are magnetically engaged with each other.

[0011] Preferably, the scale scraping group is arranged inside the fixed plate and on the surface of the scraper plate, and the scale scraping group is composed of a rotating screw, an adjusting screw barrel and a trough body. A driving motor is installed inside the fixed plate, and the input end of the driving motor is electrically connected to the output end of the control button. A rotating rod is installed at the output end of the driving motor through a coupling, and a rotating screw is arranged inside the fixed plate. The rotating screw and the inner wall of the fixed plate rotate with each other, and the surface of the rotating screw is fixed to the surface of the rotating rod.

[0012] Preferably, the surface thread sleeve of the rotating screw is provided with an adjusting screw barrel, and the adjusting screw barrel and the surface of the rotating screw are rotatably matched with each other. The inner wall of the fixed plate is provided with a groove body for guiding the scraper plate, and the groove body and the surface of the adjusting screw barrel are slidably matched with each other, and the surface of the adjusting screw barrel is fixed to the surface of the scraper plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the cleaning device for the central air-conditioning duct not only enables the cleaning device to clean the inner wall of the air-conditioning duct body of different diameters when in use, so that the cleaning device has higher versatility when in use, enables the cleaning device to scrape off the scale stuck on the inner wall of the air-conditioning duct body when in use, so that the cleaning effect of the cleaning device when in use is better and can better meet the use needs of the user, but also enables the user to replace the cleaning brush when in use, so that the cleaning device is more convenient and easy to operate;

[0014] 1. A universal cleaning mechanism is provided to control the operation of the electric push plate inside the fixed frame, and the mobile frame is driven to move under the action of the electric push plate, so that the mobile frame drives the guide slider to slide on the inner wall of the fixed frame, and the mobile frame is guided under the action of the guide slider, so that the surface of the mobile frame contacts the inner wall of the air duct body of the air conditioner, so that the cleaning device can smoothly enter the interior of the air duct body of the air conditioner, and the function of the cleaning device to clean the air duct bodies of different diameters is realized, so that the cleaning device can clean the inner wall of the air duct bodies of different diameters when in use, and the cleaning device has higher versatility when in use;

[0015] 2. A scale scraping mechanism is provided to control the operation of the driving motor inside the fixed plate. Under the action of the driving motor, the shaft body is driven to rotate. When the shaft body rotates, the shaft body drives the rotating screw to rotate inside the fixed plate. Under the cooperation of the thread of the rotating screw and the adjusting screw barrel, the adjusting screw barrel is driven to move inside the fixed plate. At this time, the adjusting screw barrel slides inside the groove body, and the adjusting screw barrel is guided under the action of the groove body, so that the adjusting screw barrel moves left and right inside the fixed plate. At this time, the adjusting screw barrel drives the scraper plate to move on the surface of the fixed plate to scrape off the scale on the inner wall of the air-conditioning duct body, thereby realizing the function of the cleaning device to scrape off the scale sticking to the inner wall of the air-conditioning duct body, so that the cleaning device can scrape off the scale sticking to the inner wall of the air-conditioning duct body when in use, so that the cleaning effect of the cleaning device is better when in use, and the use needs of the user can be better met;

[0016] 3. By providing a convenient replacement mechanism, the user pulls the cleaning brush, and the connecting block slides inside the fixed groove. Under the joint action of the connecting block and the fixed groove, the cleaning brush is guided. At this time, the connecting block drives the positioning card away from the inside of the cleaning brush. At this time, the cleaning brush drives the first magnet away from the surface of the second magnet, thereby removing the cleaning brush from the surface of the movable column, and replacing the cleaning brush in time, realizing the function of the cleaning device to conveniently replace the cleaning brush, thereby making it convenient for the user to replace the cleaning brush when using the cleaning device, making the cleaning device more convenient and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0019] Figure 3 For the utility model Figure 2 An enlarged structural diagram of the general cleaning mechanism;

[0020] Figure 4 For the utility model Figure 2 The enlarged structural diagram of the convenient replacement mechanism;

[0021] Figure 5 It is an enlarged structural schematic diagram of the scale scraping mechanism of the utility model.

[0022] In the figure: 1. device body; 101. air conditioning duct body; 102. control button; 103. rotating motor; 104. cleaning brush; 105. fixing plate; 106. scraper plate; 107. connecting piece; 108. moving column; 109. compression spring; 2. universal cleaning mechanism; 201. fixing frame; 202. guide slider; 203. universal cleaning part; 2031. moving frame; 2032. electric push plate; 3. convenient replacement mechanism; 301. connecting block; 302. first magnet; 303. second magnet; 304. positioning card; 305. fixing groove; 4. scale scraping mechanism; 401. driving motor; 402. shaft; 403. scale scraping group; 4031. rotating screw; 4032. adjusting screw barrel; 4033. groove body. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. In addition, the terms "first", "second", "third", "upper, lower, left, right", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. At the same time, in the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] The utility model provides a central air conditioning duct cleaning device with a structure as follows Figure 1 and Figure 2As shown, the device body 1 includes an air conditioning duct body 101, a control button 102 is installed on the surface of the air conditioning duct body 101, and the model of the control button 102 can be selected from the LA series. A connecting piece 107 is provided on one side of the device body 1, and a rotating motor 103 is installed on the surface of the connecting piece 107. The model of the rotating motor 103 can be selected from the JO series. The input end of the rotating motor 103 is electrically connected to the output end of the control button 102, and the output end of the rotating motor 103 is installed with a rotating shaft through a coupling, and the surface of the rotating shaft is fixed to the surface of the device body 1. The inside of the device body 1 is provided with a coupling for adjusting the air conditioning duct body. A cleaning brush 104 for cleaning the inner wall of the body 101 is provided, and the cleaning brushes 104 are respectively located on both sides of the device body 1. A fixing plate 105 is installed on the surface of the device body 1. A scraper plate 106 is provided on the surface of the fixing plate 105 for scraping off the scale stuck on the inner wall of the air-conditioning duct body 101. The scraper plate 106 and the inner wall of the fixing plate 105 slide with each other. A moving column 108 is provided inside the device body 1. The moving column 108 slides with the inner wall of the device body 1 and extends to the outside of the device body 1. A compression spring 109 is installed on the inner wall of the device body 1, and one end of the compression spring 109 is fixed to the surface of the moving column 108.

[0025] Furthermore, if Figure 2 and Figure 3 As shown, the surface of the connecting member 107 is provided with a universal cleaning mechanism 2, and the interior of the universal cleaning mechanism 2 includes a fixed frame 201, a guide slider 202 and a universal cleaning portion 203, and the universal cleaning portion 203 is provided on the surface of the connecting member 107, and the universal cleaning portion 203 is composed of a movable frame 2031 and an electric push plate 2032. The surface of the connecting member 107 is installed with fixed frames 201 at equal intervals, and the interior of the fixed frame 201 is provided with a movable frame 2031, and one end of the movable frame 2031 extends to the fixed frame 201. The outer side of the movable frame 2031 is installed with a guide slider 202 on the surface thereof. The guide slider 202 slides with the inner wall of the fixed frame 201 and is slidably matched with each other. An electric push plate 2032 is installed inside the fixed frame 201. The model of the electric push plate 2032 can be selected from the DG series. The input end of the electric push plate 2032 is electrically connected to the output end of the control button 102, and the output end of the electric push plate 2032 is fixed to the surface of the movable frame 2031. The surface of the movable frame 2031 is in contact with the inner wall of the air-conditioning duct body 101.

[0026] During implementation, the electric push plate 2032 inside the fixed frame 201 is controlled to work, and the movable frame 2031 is driven to move under the action of the electric push plate 2032, so that the movable frame 2031 drives the guide slider 202 to slide on the inner wall of the fixed frame 201, and the movable frame 2031 is guided under the action of the guide slider 202, so that the surface of the movable frame 2031 contacts the inner wall of the air-conditioning duct body 101, so that the cleaning device can smoothly enter the interior of the air-conditioning duct body 101, so as to realize the function of the cleaning device to clean the air-conditioning duct bodies 101 of different diameters.

[0027] Furthermore, if Figure 2 and Figure 4 As shown, the surfaces of the cleaning brush 104 and the movable column 108 are both provided with a convenient replacement mechanism 3, and the interior of the convenient replacement mechanism 3 includes a connecting block 301, a first magnet 302, a second magnet 303, a positioning card 304 and a fixing groove 305. The surface of the movable column 108 is installed with a connecting block 301, and the inner wall of the cleaning brush 104 is provided with a fixing groove 305. The fixing groove 305 and the surface of the connecting block 301 are slidably matched with each other, and the surface of the connecting block 301 is installed with a positioning card 304 for preventing the cleaning brush 104 from loosening. The positioning card 304 and the inner wall of the cleaning brush 104 are mutually engaged, and the second magnet 303 is installed on the surface of the movable column 108. The inner wall of the cleaning brush 104 is installed with the first magnet 302, and the surfaces of the first magnet 302 and the second magnet 303 are magnetically matched with each other.

[0028] During implementation, the user pulls the cleaning brush 104, and the connecting block 301 slides inside the fixed groove 305. The cleaning brush 104 is guided by the joint action of the connecting block 301 and the fixed groove 305. At this time, the connecting block 301 drives the positioning card 304 away from the inside of the cleaning brush 104. At this time, the cleaning brush 104 drives the first magnet 302 away from the surface of the second magnet 303, thereby removing the cleaning brush 104 from the surface of the movable column 108, and replacing the cleaning brush 104 in time to realize the function of replacing the cleaning brush 104 by the cleaning device.

[0029] Furthermore, if Figure 2 and Figure 5As shown, the interior of the fixed plate 105 and the surface of the scraper plate 106 are both provided with a scale scraping mechanism 4, the interior of the scale scraping mechanism 4 includes a driving motor 401, a shaft 402 and a scale scraping group 403, the scale scraping group 403 is arranged inside the fixed plate 105 and on the surface of the scraper plate 106, the scale scraping group 403 is composed of a rotating screw 4031, an adjusting screw barrel 4032 and a groove body 4033, the interior of the fixed plate 105 is installed with a driving motor 401, the input end of the driving motor 401 is electrically connected to the output end of the control button 102, and the output end of the driving motor 401 is installed with a coupling The rotating rod and the fixed plate 105 are provided with a rotating screw 4031 inside. The rotating screw 4031 and the inner wall of the fixed plate 105 are rotatably matched with each other. The surface of the rotating screw 4031 is fixed to the surface of the rotating rod. The surface of the rotating screw 4031 is threadedly sleeved with an adjusting screw barrel 4032. The adjusting screw barrel 4032 and the surface of the rotating screw 4031 are rotatably matched with each other. The inner wall of the fixed plate 105 is provided with a groove body 4033 for guiding the scraper plate 106. The groove body 4033 and the surface of the adjusting screw barrel 4032 are slidably matched with each other, and the surface of the adjusting screw barrel 4032 is fixed to the surface of the scraper plate 106.

[0030] During implementation, the driving motor 401 inside the fixed plate 105 is controlled to work, and the shaft 402 is driven to rotate under the action of the driving motor 401. When the shaft 402 rotates, the shaft 402 drives the rotating screw 4031 to rotate inside the fixed plate 105. Under the thread cooperation between the rotating screw 4031 and the adjusting screw barrel 4032, the adjusting screw barrel 4032 is driven to move inside the fixed plate 105. At this time, the adjusting screw barrel 4032 slides inside the groove 4033, and the adjusting screw barrel 4032 is guided under the action of the groove 4033, so that the adjusting screw barrel 4032 moves left and right inside the fixed plate 105. At this time, the adjusting screw barrel 4032 drives the scraper plate 106 to move on the surface of the fixed plate 105, and the scale on the inner wall of the air conditioning duct body 101 is scraped off, so as to realize the function of the cleaning device to scrape off the scale sticking to the inner wall of the air conditioning duct body 101.

[0031] Working principle: When in use, first place the device body 1 at the specified position, and the user adjusts the size of the cleaning device according to the diameter of the air-conditioning duct body 101. At this time, the user operates the control button 102, so that the control button 102 controls the electric push plate 2032 inside the fixed frame 201 to work, and the movable frame 2031 is driven to move under the action of the electric push plate 2032, so that the movable frame 2031 drives the guide slider 202 to slide on the inner wall of the fixed frame 201, and the movable frame 2031 is guided under the action of the guide slider 202, so that the surface of the movable frame 2031 contacts the inner wall of the air-conditioning duct body 101, so that the cleaning device can smoothly enter the interior of the air-conditioning duct body 101, so as to realize the function of the cleaning device to clean the air-conditioning duct bodies 101 of different diameters, so that the cleaning device can clean the inner wall of the air-conditioning duct bodies 101 of different diameters when in use, so that the cleaning device has higher versatility when in use.

[0032] Subsequently, the movable column 108 and the cleaning brush 104 are driven to move under the elastic force of the compression spring 109, so that the movable column 108 drives the cleaning brush 104 to move to contact the inner wall of the air-conditioning duct body 101, and the inner wall of the air-conditioning duct body 101 is cleaned under the action of the cleaning brush 104. Subsequently, the user operates the control button 102 again, so that the control button 102 controls the rotating motor 103 on the surface of the connecting piece 107 to work, and the rotating motor 103 drives the device body 1 to rotate inside the air-conditioning duct body 101. When the device body 1 rotates, the device body 1 drives the cleaning brush 104 to rotate inside the air-conditioning duct body 101, and the inner wall of the air-conditioning duct body 101 is rotated and cleaned under the action of the cleaning brush 104.

[0033] Subsequently, when the device body 1 rotates, the device body 1 drives the fixing plate 105 and the scraper plate 106 to rotate inside the air conditioning duct body 101, and scrapes off the scale stuck to the inner wall of the air conditioning duct body 101. Subsequently, the user operates the control button 102 again, so that the control button 102 controls the driving motor 401 inside the fixing plate 105 to work, and the shaft body 402 is driven to rotate under the action of the driving motor 401. When the shaft body 402 rotates, the shaft body 402 drives the rotating screw 4031 to rotate inside the fixing plate 105, and the adjusting screw barrel 4032 is driven to move inside the fixing plate 105 under the thread cooperation of the rotating screw 4031 and the adjusting screw barrel 4032. The adjusting screw 4032 moves, at this time, the adjusting screw 4032 slides inside the groove body 4033, and the adjusting screw 4032 is guided by the groove body 4033, so that the adjusting screw 4032 moves left and right inside the fixed plate 105. At this time, the adjusting screw 4032 drives the scraper plate 106 to move on the surface of the fixed plate 105, and scrapes off the scale on the inner wall of the air-conditioning duct body 101, so as to realize the function of the cleaning device to scrape off the scale sticking to the inner wall of the air-conditioning duct body 101, so that the cleaning device can scrape off the scale sticking to the inner wall of the air-conditioning duct body 101 when in use, so that the cleaning effect of the cleaning device when in use is better and can better meet the use needs of the user.

[0034] Subsequently, when the cleaning brush 104 has been used for a long time, the cleaning brush 104 needs to be replaced. At this time, the user pulls the cleaning brush 104, and the connecting block 301 slides inside the fixing groove 305. Under the joint action of the connecting block 301 and the fixing groove 305, the cleaning brush 104 is guided. At this time, the connecting block 301 drives the positioning card 304 away from the inside of the cleaning brush 104. At this time, the cleaning brush 104 drives the first magnet 302 away from the surface of the second magnet 303, thereby removing the cleaning brush 104 from the surface of the movable column 108, and replacing the cleaning brush 104 in time to realize the function of the cleaning device to facilitate the replacement of the cleaning brush 104, so that the user can replace the cleaning brush 104 when using the cleaning device, making the cleaning device more convenient and easy to operate, and finally completing the use of the cleaning device.

[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A cleaning device for a central air-conditioning duct, comprising a device body (1), characterized in that: An air conditioning duct body (101) is arranged on the surface of the device body (1), a control button (102) is installed on the surface of the air conditioning duct body (101), a connecting piece (107) is arranged on one side of the device body (1), a cleaning brush (104) for cleaning the inner wall of the air conditioning duct body (101) is arranged inside the device body (1), the cleaning brush (104) is respectively located on both sides of the device body (1), a fixing plate (105) is installed on the surface of the device body (1), a scraping plate (106) for scraping off scale adhering to the inner wall of the air conditioning duct body (101) is arranged on the surface of the fixing plate (105), the scraping plate (106) and the inner wall of the fixing plate (105) are slidably matched with each other, and a cleaning brush (104) is arranged inside the device body (1). A movable column (108) is arranged, the surface of the connecting member (107) is provided with a universal cleaning mechanism (2), the interior of the universal cleaning mechanism (2) includes a fixed frame (201), a guide slider (202) and a universal cleaning part (203), the surfaces of the cleaning brush (104) and the movable column (108) are provided with a convenient replacement mechanism (3), the interior of the convenient replacement mechanism (3) includes a connecting block (301), a first magnet (302), a second magnet (303), a positioning clamp (304) and a fixing groove (305), the interior of the fixing plate (105) and the surface of the scraper plate (106) are provided with a scale scraping mechanism (4), the interior of the scale scraping mechanism (4) includes a driving motor (401), a shaft (402) and a scale scraping group (403).

2. A cleaning device for central air conditioning duct according to claim 1, characterized in that: A rotating motor (103) is installed on the surface of the connecting member (107), and the input end of the rotating motor (103) is electrically connected to the output end of the control button (102). The output end of the rotating motor (103) is installed with a rotating shaft through a coupling, and the surface of the rotating shaft is fixed to the surface of the device body (1). The moving column (108) and the inner wall of the device body (1) are slidably matched and extend to the outside of the device body (1). The inner wall of the device body (1) is installed with a compression spring (109), and one end of the compression spring (109) is fixed to the surface of the moving column (108).

3. A cleaning device for central air conditioning duct according to claim 1, characterized in that: The universal cleaning part (203) is arranged on the surface of the connecting member (107), and the universal cleaning part (203) is composed of a movable frame (2031) and an electric push plate (2032). The surface of the connecting member (107) is installed with fixed frames (201) at equal intervals, and the movable frame (2031) is arranged inside the fixed frame (201), and one end of the movable frame (2031) extends to the outside of the fixed frame (201).

4. A cleaning device for central air conditioning duct according to claim 3, characterized in that: The surface of the movable frame (2031) is installed with a guide slider (202), and the guide slider (202) and the inner wall of the fixed frame (201) are slidably matched with each other. An electric push plate (2032) is installed inside the fixed frame (201), and the input end of the electric push plate (2032) is electrically connected to the output end of the control button (102), and the output end of the electric push plate (2032) is fixed to the surface of the movable frame (2031), and the surface of the movable frame (2031) is in contact with the inner wall of the air conditioning duct body (101).

5. A cleaning device for central air-conditioning duct according to claim 1, characterized in that: The surfaces of the movable columns (108) are all provided with connecting blocks (301), the inner walls of the cleaning brushes (104) are all provided with fixing grooves (305), the fixing grooves (305) and the surfaces of the connecting blocks (301) are slidably matched with each other, and the surfaces of the connecting blocks (301) are provided with positioning clamps (304) for preventing the cleaning brushes (104) from loosening.

6. A cleaning device for central air conditioning duct according to claim 5, characterized in that: The positioning clamp (304) and the inner wall of the cleaning brush (104) are mutually engaged, the surface of the movable column (108) is installed with a second magnet (303), the inner wall of the cleaning brush (104) is installed with a first magnet (302), and the surfaces of the first magnet (302) and the second magnet (303) are mutually magnetically engaged.

7. A cleaning device for central air-conditioning duct according to claim 1, characterized in that: The scale scraping group (403) is arranged inside the fixed plate (105) and on the surface of the scraper plate (106). The scale scraping group (403) is composed of a rotating screw (4031), an adjusting screw barrel (4032) and a trough body (4033). A driving motor (401) is installed inside the fixed plate (105). The input end of the driving motor (401) is electrically connected to the output end of the control button (102). The output end of the driving motor (401) is installed with a rotating rod through a coupling. A rotating screw (4031) is arranged inside the fixed plate (105). The rotating screw (4031) and the inner wall of the fixed plate (105) are rotatably matched with each other, and the surface of the rotating screw (4031) is fixed to the surface of the rotating rod.

8. A cleaning device for central air-conditioning duct according to claim 7, characterized in that: The surface of the rotating screw (4031) is threadedly sleeved with an adjusting screw barrel (4032), and the adjusting screw barrel (4032) and the surface of the rotating screw (4031) are rotatably matched with each other. The inner wall of the fixed plate (105) is provided with a groove body (4033) for guiding the scraper plate (106), and the groove body (4033) and the surface of the adjusting screw barrel (4032) are slidably matched with each other, and the surface of the adjusting screw barrel (4032) is fixed to the surface of the scraper plate (106).

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