Household air conditioner purification and ventilation device with self-cleaning function

Abstract

The invention discloses a household air conditioner purification and ventilation device with a self-cleaning function, and relates to the technical field of air conditioner purification and ventilation, the household air conditioner purification and ventilation device comprises a ventilation pipe and a driving mechanism, the ventilation pipe is provided with two filter screen frames which are arranged in a staggered mode, and the driving mechanism is installed on the side faces of the filter screen frames. The adjusting mechanism comprises a transmission part and two screw rods which are in threaded connection with the side faces of the two filter screen frames respectively, and the driving mechanism is matched with the transmission part to drive the two screw rods to rotate intermittently and drive one filter screen frame to move to the tail end of the stroke in the ventilation pipe; when the device cleans the filter screen or needs to replace the filter screen, the device can be effectively prevented from being shut down, the practicability is higher, through the arranged cleaning mechanism, the filter screen can be subjected to comprehensive dust removal, the filter screen can purify air better, a column brush is matched with protrusions on a scraper in a rotating mode to conduct scraping dust removal on the filter screen, and the cleaning efficiency is improved. And continuous operation of the device is facilitated, and the cleaning efficiency is higher.

Description

Technical Field

[0001] This invention relates to air conditioning purification and ventilation technology, specifically to a household air conditioning purification and ventilation device with self-cleaning function. Background Technology

[0002] A household air conditioner is an air conditioner installed in a resident's home. It is used to regulate indoor temperature and humidity and purify the air. It is an ideal high-end household appliance for modern families. There are many types of air conditioners, but most of them are window-type models. In order to purify and filter the air, most air conditioner units are equipped with filters inside to filter the air.

[0003] Existing household air conditioning purification and ventilation devices accumulate a lot of dust on their internal filters after a period of use, which greatly affects the air filtration efficiency. The filters need to be cleaned and replaced frequently. At the same time, the filtration equipment needs to be shut down when cleaning or replacing the filters, which makes the equipment unable to operate continuously, which is quite inconvenient. Summary of the Invention

[0004] The purpose of this invention is to provide a household air conditioning purification and ventilation device with self-cleaning function to overcome the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a household air conditioner purification and ventilation device with self-cleaning function, comprising a ventilation duct, on which two staggered filter frames are installed, and a drive mechanism. An adjustment mechanism is installed on the side of the filter frames, comprising a transmission component and two screws threadedly connected to the sides of the two filter frames respectively. The drive mechanism, in cooperation with the transmission component, drives the two screws to rotate intermittently, causing one filter frame to move to the end of its travel inside the ventilation duct, while the other filter frame moves down to a position where its top is flush with the bottom surface inside the ventilation duct. One side of the cleaning mechanism is connected to the transmission component. The cleaning mechanism includes a linkage component and a moving frame, on which two column brushes are symmetrically installed. The transmission component drives the moving frame to move laterally, and the drive mechanism synchronously cooperates with the linkage component to drive the column brushes to rotate.

[0006] Furthermore, the transmission component includes a starting component and a gear disk 1 slidably mounted on the outside of the two screws. A gear disk 2 is engaged on the lower side of each of the two gear disks. A main shaft is sleeved inside one of the gear disk 2. The starting component drives the two gear disks 1 to move up and down. After one gear disk 1 separates from its adjacent gear disk 2, the other gear disk 1 engages with its adjacent gear disk 2.

[0007] Furthermore, a support column is fixedly connected to the lower end of another gear disc, and a housing is rotatably connected to one end of the support column. The upper end of the housing is fixedly connected to a ventilation pipe.

[0008] Furthermore, the starting component includes a drive gear fixedly connected to one end of the main shaft, a rack meshing with one side of the drive gear, a slide plate fixedly connected to one side of the rack, a slide plate slidably connected to the inner wall of the ventilation pipe, and two top blocks arranged in opposite directions on the slide plate.

[0009] Furthermore, both of the geared discs are slidably connected to sliders on their outer sides, and the two sliders are rotatably connected to the same inclined plate on one side. A fixed rod is fixedly connected to the middle section of the inclined plate. One end of the fixed rod is rotatably connected to the inner wall of the housing, and the other end of the fixed rod is fixedly connected to a swing plate. A pull rod is fixedly installed on one side of the swing plate, and a tension spring is provided on one side of the pull rod. The pull rod is connected to a T-shaped plate through the tension spring. One side of the T-shaped plate is rotatably connected to the fixed rod, and protruding rods are provided on both sides of the T-shaped plate.

[0010] Furthermore, the drive mechanism includes a motor fixedly connected to the inner wall of the housing, one end of the main shaft passes through the interior of the adjacent screw and is fixedly connected to the output shaft of the motor, the top ends of both screws are rotatably connected to the inner wall of the housing, and the other end of the main shaft is connected to the support column via a transmission belt.

[0011] Furthermore, the linkage component includes a cam sleeved on the outside of the main shaft. One side of the cam abuts against a T-shaped frame. One end of the T-shaped frame is slidably connected to a limiting plate. One side of the limiting plate is fixedly connected to a ventilation pipe. One side of the limiting plate is fixedly connected to a spring. One end of the spring is fixedly connected to the T-shaped frame. One side of the T-shaped frame is fixedly connected to a toothed plate. One side of the toothed plate is slidably connected to a moving frame. The other side of the toothed plate meshes with two driven gears. One side of each of the two driven gears is fixedly connected to two column brushes.

[0012] Furthermore, the cleaning mechanism also includes a push plate rotatably connected to the inner wall of the housing. One end of the push plate is slidably connected to a pull rod, and the other end of the push plate is slidably connected to a crossbar. One end of the crossbar is fixedly connected to a movable frame, and one side of the movable frame is slidably connected to a ventilation pipe. Two scrapers are symmetrically arranged at the bottom of the ventilation pipe, and protrusions are evenly arranged on the two scrapers.

[0013] Compared with the prior art, the present invention provides a household air conditioner purification and ventilation device with self-cleaning function. After the filter frame moves upward to the end of its travel in the ventilation duct, the top block on the slide plate presses and pushes the protrusion on the T-shaped plate, thereby rotating the T-shaped plate. The swing plate is pulled to rotate by the tension spring, and the swing plate drives the inclined plate to rotate. The inclined plate causes two toothed discs to move one upward and one downward through the slider, thereby rotating another screw and driving another filter frame to move downward. Thus, when cleaning the filter or when the filter needs to be replaced, the device can be effectively prevented from stopping, making it more practical. The cleaning mechanism features a system where, as one filter frame moves upward, the adjacent column brush rotates to clean it. When the other filter frame moves downward, a swing plate rotates its connecting rod, which in turn rotates a push plate. This push plate then rotates a crossbar, which moves a moving frame. The moving frame then moves its column brush, causing the column brush next to the downward-moving filter frame to move to one side. The column brush continues to rotate, cleaning the filter. As the filter frame continues to move downward, the filter is thoroughly cleaned, resulting in better air purification. The other column brush is positioned close to its adjacent scraper, and its rotation, combined with the protrusions on the scraper, scrapes away dust, facilitating continuous operation and increasing cleaning efficiency. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 This is a schematic diagram of the front cross-sectional structure of the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention viewed from below; Figure 3 This is a schematic diagram of the rear cross-sectional structure of the present invention; Figure 4 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram showing the combination of the starting component, support column, and push plate of the present invention; Figure 6 This is a schematic diagram showing the assembly of the screw, main shaft, gear disc one, and gear disc two of the present invention.

[0016] Explanation of reference numerals in the attached figures: 1. Ventilation duct; 2. Filter frame; 3. Housing; 4. Adjustment mechanism; 40. Starting component; 401. Drive gear; 402. Rack; 403. Slide plate; 404. Top block; 405. Slider; 406. Inclined plate; 407. Fixed rod; 408. Swing plate; 409. Pull rod; 4091. T-shaped plate; 41. Transmission component; 411. Gear disc one; 412. Gear disc two; 413. Main shaft; 414. Support column; 42. Screw; 5. Cleaning mechanism; 51. Linkage component; 511. Cam; 512. T-shaped frame; 513. Spring; 514. Gear plate; 515. Driven gear; 52. Moving frame; 53. Column brush; 54. Push plate; 55. Crossbar; 56. Scraper; 6. Drive mechanism; 61. Motor. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0018] Example 1: Please see Figure 1-Figure 4 A household air conditioner purification and ventilation device with self-cleaning function includes a ventilation pipe 1, two staggered filter frames 2 are installed on the ventilation pipe 1, the filter frames 2 are slidably connected to the ventilation pipe 1, and the filter screens are installed inside the two filter frames 2. It also includes a drive mechanism 6. Adjustment mechanism 4 is installed on the side of filter frame 2. Adjustment mechanism 4 includes transmission component 41 and two screws 42 that are threaded to the sides of the two filter frames 2 respectively. The threads on the two screws 42 turn in opposite directions. Drive mechanism 6 cooperates with transmission component 41 to drive the two screws 42 to rotate intermittently. After one of the filter frames 2 moves to the end of its internal stroke in ventilation pipe 1, the other filter frame 2 moves down to a position where its top is flush with the bottom surface inside ventilation pipe 1. The transmission component 41 can be configured as two motors or rotary cylinders and an electric telescopic rod. The two motors or rotary cylinders are respectively connected to two screws 42. The two motors or rotary cylinders can control the two screws 42 to rotate, thereby controlling the up and down movement of the two filter frames 2. The cleaning mechanism 5 is connected to the transmission component 41 on one side. The cleaning mechanism 5 includes a linkage component 51 and a moving frame 52. Two column brushes 53 are symmetrically installed on the moving frame 52. The transmission component 41 drives the moving frame 52 to move laterally, and the drive mechanism 6 works in sync with the linkage component 51 to drive the column brushes 53 to rotate. The linkage component 51 includes a cam 511 sleeved on the outside of the main shaft 413. A T-shaped frame 512 is abutted on one side of the cam 511. A limit plate is slidably connected to one end of the T-shaped frame 512. One side of the limit plate is fixedly connected to the ventilation pipe 1. A spring 513 is fixedly connected to one side of the limit plate. One end of the spring 513 is fixedly connected to the T-shaped frame 512. A toothed plate 514 is fixedly connected to one side of the T-shaped frame 512. One side of the toothed plate 514 is slidably connected to the moving frame 52. Two driven gears 515 mesh on the other side of the toothed plate 514. One side of the two driven gears 515 is fixedly connected to the two column brushes 53 respectively. The two ends of the two column brushes 53 are rotatably connected to the moving frame 52 respectively. The cleaning mechanism 5 also includes a push plate 54 rotatably connected to the inner wall of the housing 3. One end of the push plate 54 is slidably connected to the pull rod 409, and the other end of the push plate 54 is slidably connected to a crossbar 55. One end of the crossbar 55 is fixedly connected to the movable frame 52, and one side of the movable frame 52 is slidably connected to the ventilation pipe 1. Two scrapers 56 are symmetrically arranged at the bottom of the ventilation pipe 1, and protrusions are evenly arranged on the two scrapers 56. The electric telescopic rod inside the transmission component 41 is fixedly installed on the movable frame 52, and the output end of the electric telescopic rod is fixedly connected to the toothed plate 514. The extension and retraction of the electric telescopic rod drives the toothed plate 514 to reciprocate along one side of the movable frame 52, thereby driving the toothed plate 54 to rotate the two driven gears 515, which in turn drives the two column brushes 53 to rotate.

[0019] Example 2: Please see Figures 1-6 A household air conditioner purification and ventilation device with self-cleaning function includes a ventilation pipe 1, two staggered filter frames 2 are installed on the ventilation pipe 1, the filter frames 2 are slidably connected to the ventilation pipe 1, and the filter screens are installed inside the two filter frames 2. It also includes a drive mechanism 6. Adjustment mechanism 4 is installed on the side of filter frame 2. Adjustment mechanism 4 includes transmission component 41 and two screws 42 that are threaded to the sides of the two filter frames 2 respectively. The threads on the two screws 42 turn in opposite directions. Drive mechanism 6 cooperates with transmission component 41 to drive the two screws 42 to rotate intermittently. After one of the filter frames 2 moves to the end of its internal stroke in ventilation pipe 1, the other filter frame 2 moves down to a position where its top is flush with the bottom surface inside ventilation pipe 1. The transmission component 41 may also include a starting component 40 and a gear disk 411 slidably mounted on the outside of the two screws 42. The lower sides of the two gear disks 411 are meshed with gear disks 412. A main shaft 413 is sleeved inside one of the gear disks 412. The starting component 40 drives the two gear disks 411 to move up and down. After one gear disk 411 separates from its adjacent gear disk 412, the other gear disk 411 meshes with its adjacent gear disk 412. The lower end of the other gear disk 412 is fixedly connected to a support column 414. One end of the support column 414 is rotatably connected to a housing 3. The upper end of the housing 3 is fixedly connected to the ventilation pipe 1. The starting component 40 includes a drive gear 401 fixedly connected to one end of the main shaft 413. A rack 402 meshes with one side of the drive gear 401. A slide plate 403 is fixedly connected to one side of the rack 402. One side of the slide plate 403 is slidably connected to the inner wall of the ventilation pipe 1. Two top blocks 404 are arranged in opposite directions on the slide plate 403. Slider blocks 405 are slidably connected to the outside of the two gear discs 411. The same inclined plate 406 is rotatably connected to one side of the two sliders 405. A fixed rod 407 is fixedly connected to the middle section of the inclined plate 406. One end of the fixed rod 407 is rotatably connected to the inner wall of the housing 3. The other end of the fixed rod 407 is fixedly connected to a swing plate 408. A pull rod 409 is fixedly installed on one side of the swing plate 408. A tension spring is provided on one side of the pull rod 409. A T-shaped plate 4091 is connected to the pull rod 409 through the tension spring. One side of the T-shaped plate 4091 is rotatably connected to the fixed rod 407. Protruding rods are provided on both sides of the T-shaped plate 4091. The drive mechanism 6 includes a motor 61 fixedly connected to the inner wall of the housing 3. One end of the main shaft 413 passes through the interior of the adjacent screw 42 and is fixedly connected to the output shaft of the motor 61. The top ends of the two screws 42 are rotatably connected to the inner wall of the housing 3. The other end of the main shaft 413 is connected to the support column 414 via a transmission belt. Both the main shaft 413 and the support column 414 are fitted with transmission wheels. The rotation of the main shaft 413 drives the drive gear 401 to rotate. The drive gear 401 meshes with the rack 402, thereby the rack 402 drives the slide plate 403 to move. When the filter frame 2 moves upward to the end of its stroke in the ventilation pipe 1, the top block 404 on the slide plate 403 presses and pushes the protrusion on the T-shaped plate 4091, thereby the T-shaped plate 4091 rotates and pulls the swing plate 408 to rotate through the tension spring. The swing plate 408 drives the inclined plate 406 to rotate. The inclined plate 406 causes the two gear discs 411 to move one upward and the other downward through the slider 405, thereby the other screw 42 rotates and drives the filter frame 2 connected to it to move downward. The cleaning mechanism 5 is connected to the transmission component 41 on one side. The cleaning mechanism 5 includes a linkage component 51 and a moving frame 52. Two column brushes 53 are symmetrically installed on the moving frame 52. The transmission component 41 drives the moving frame 52 to move laterally, and the drive mechanism 6 works in sync with the linkage component 51 to drive the column brushes 53 to rotate. The linkage component 51 includes a cam 511 sleeved on the outside of the main shaft 413. A T-shaped frame 512 is abutted on one side of the cam 511. A limit plate is slidably connected to one end of the T-shaped frame 512. One side of the limit plate is fixedly connected to the ventilation pipe 1. A spring 513 is fixedly connected to one side of the limit plate. One end of the spring 513 is fixedly connected to the T-shaped frame 512. A toothed plate 514 is fixedly connected to one side of the T-shaped frame 512. One side of the toothed plate 514 is slidably connected to the moving frame 52. Two driven gears 515 mesh on the other side of the toothed plate 514. One side of the two driven gears 515 is fixedly connected to the two column brushes 53 respectively. The two ends of the two column brushes 53 are rotatably connected to the moving frame 52 respectively. The cleaning mechanism 5 also includes a push plate 54 rotatably connected to the inner wall of the housing 3. One end of the push plate 54 is slidably connected to the pull rod 409, and the other end of the push plate 54 is slidably connected to a crossbar 55. One end of the crossbar 55 is fixedly connected to the movable frame 52, and one side of the movable frame 52 is slidably connected to the ventilation pipe 1. Two scrapers 56 are symmetrically arranged at the bottom of the ventilation pipe 1, and protrusions are evenly arranged on the two scrapers 56. The main shaft 413 drives the cam 511 to rotate, and the cam 511 squeezes and pushes the T-shaped frame 512. The main shaft 413 drives the cam 511 to rotate continuously. Under the action of the spring 513, the T-shaped frame 512 drives the toothed plate 514 to reciprocate along one side of the moving frame 52. Then the toothed plate 514 drives the two driven gears 515 to rotate, which in turn drives the two column brushes 53 to rotate.

[0020] Working principle: During use, when the filter screen needs cleaning, the motor 61 is started. The motor 61 drives the main shaft 413 to rotate, which in turn drives the connected gear disc 412 to rotate. At this time, the gear disc 412 meshes with its adjacent gear disc 411. The rotation of the gear disc 412 drives the gear disc 411 to rotate, which in turn drives the connected screw 42 to rotate. The filter screen frame 2 is slidably connected to the ventilation pipe 1, so the rotation of the screw 42 drives the connected filter screen frame 2 to move upward. The main shaft 413 drives the support column 414 to rotate via a transmission belt. The support column 414 drives another gear disc 412 to rotate. The rotation of the main shaft 413 drives the drive gear 401 to rotate. The moving gear 401 meshes with the rack 402, thereby the rack 402 drives the slide plate 403 to move. When the filter screen frame 2 moves upward to the end of its stroke in the ventilation pipe 1, the top block 404 on the slide plate 403 presses and pushes the protrusion on the T-shaped plate 4091, thereby rotating the T-shaped plate 4091 and pulling the swing plate 408 to rotate through the tension spring. The swing plate 408 drives the inclined plate 406 to rotate. The inclined plate 406 causes the two gear discs 411 to move one upward and the other downward through the slider 405, thereby rotating the other screw 42 and driving the filter screen frame 2 connected to it to move downward. Thus, when cleaning the filter screen or when the filter screen needs to be replaced, the device can be effectively prevented from stopping, making it more practical. Simultaneously, the main shaft 413 drives the cam 511 to rotate, and the cam 511 presses and pushes the T-shaped frame 512. The main shaft 413 drives the cam 511 to rotate continuously. Under the action of the spring 513, the T-shaped frame 512 drives the toothed plate 514 to reciprocate along one side of the moving frame 52. Then, the toothed plate 514 drives the two driven gears 515 to rotate, which in turn drives the two column brushes 53 to rotate. When one of the filter screen frames 2 moves upward, the column brush 53 adjacent to it rotates to clean it. When the other filter screen frame 2 moves downward, the swing plate 408 drives the pull rod 409 on it to rotate. 9. Pushing the push plate 54 to rotate, the push plate 54 rotates and pushes the crossbar 55, the crossbar 55 drives the moving frame 52 to move, and then the moving frame 52 drives the column brush 53 on it to move. The column brush 53 next to the downward moving filter screen frame 2 moves to one side, and the column brush 53 continues to rotate to clean the filter screen. As the filter screen frame 2 continues to move downward, the filter screen is thoroughly cleaned, making the filter screen better at purifying the air. Another column brush 53 is close to the adjacent scraper 56, and its rotation, together with the protrusion on the scraper 56, scrapes and cleans the dust, thus facilitating continuous operation of the device and making the cleaning efficiency higher.

[0021] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A household air conditioner purification and ventilation device with self-cleaning function, comprising a ventilation pipe (1), wherein two staggered filter frames (2) are installed on the ventilation pipe (1), characterized in that: It also includes a drive mechanism (6); Adjustment mechanism (4), the adjustment mechanism (4) is installed on the side of the filter frame (2), the adjustment mechanism (4) includes a transmission component (41) and two screws (42) respectively threaded to the sides of the two filter frames (2), the drive mechanism (6) cooperates with the transmission component (41) to drive the two screws (42) to rotate intermittently, and drive one of the filter frames (2) to move to the end of the stroke inside the ventilation pipe (1), and the other filter frame (2) moves down to the position where its top is flush with the bottom surface inside the ventilation pipe (1); The cleaning mechanism (5) is connected to the transmission component (41) on one side. The cleaning mechanism (5) includes a linkage component (51) and a moving frame (52). Two column brushes (53) are symmetrically installed on the moving frame (52). The transmission component (41) drives the moving frame (52) to move laterally, and the driving mechanism (6) works in sync with the linkage component (51) to drive the column brushes (53) to rotate.

2. A household air conditioning purification and ventilation device with self-cleaning function according to claim 1, characterized in that, The transmission component (41) includes a starting component (40) and a gear disk (411) slidably mounted on the outside of two screws (42). The two gear disks (411) are meshed with a gear disk (412) on their lower sides. A main shaft (413) is sleeved inside one of the gear disks (412). The starting component (40) drives the two gear disks (411) to move up and down. After one gear disk (411) separates from its adjacent gear disk (412), the other gear disk (411) meshes with its adjacent gear disk (412).

3. A household air conditioning purification and ventilation device with self-cleaning function according to claim 2, characterized in that, Another gear disc (412) has a support column (414) fixedly connected to its lower end. One end of the support column (414) is rotatably connected to a housing (3). The upper end of the housing (3) is fixedly connected to a ventilation pipe (1).

4. A household air conditioning purification and ventilation device with self-cleaning function according to claim 3, characterized in that, The starting component (40) includes a drive gear (401) fixedly connected to one end of the main shaft (413). A rack (402) meshes with one side of the drive gear (401). A slide plate (403) is fixedly connected to one side of the rack (402). One side of the slide plate (403) is slidably connected to the inner wall of the ventilation pipe (1). Two top blocks (404) are arranged in opposite directions on the slide plate (403).

5. A household air conditioning purification and ventilation device with self-cleaning function according to claim 4, characterized in that, Both of the two gear discs (411) are slidably connected to sliders (405) on the outside. The two sliders (405) are rotatably connected to the same inclined plate (406) on one side. A fixed rod (407) is fixedly connected to the middle section of the inclined plate (406). One end of the fixed rod (407) is rotatably connected to the inner wall of the housing (3). The other end of the fixed rod (407) is fixedly connected to a swing plate (408). A pull rod (409) is fixedly installed on one side of the swing plate (408). A tension spring is provided on one side of the pull rod (409). The pull rod (409) is connected to a T-shaped plate (4091) through the tension spring. One side of the T-shaped plate (4091) is rotatably connected to the fixed rod (407). Both sides of the T-shaped plate (4091) are provided with protruding rods.

6. A household air conditioning purification and ventilation device with self-cleaning function according to claim 5, characterized in that, The drive mechanism (6) includes a motor (61) fixedly connected to the inner wall of the housing (3). One end of the main shaft (413) passes through the interior of the adjacent screw (42) and is fixedly connected to the output shaft of the motor (61). The top ends of the two screws (42) are rotatably connected to the inner wall of the housing (3). The other end of the main shaft (413) is connected to the support column (414) via a transmission belt.

7. A household air conditioning purification and ventilation device with self-cleaning function according to claim 6, characterized in that, The linkage component (51) includes a cam (511) sleeved on the outside of the main shaft (413). A T-shaped frame (512) is abutted on one side of the cam (511). A limiting plate is slidably connected to one end of the T-shaped frame (512). A ventilation pipe (1) is fixedly connected to one side of the limiting plate. A spring (513) is fixedly connected to one side of the limiting plate. One end of the spring (513) is fixedly connected to the T-shaped frame (512). A toothed plate (514) is fixedly connected to one side of the T-shaped frame (512). A movable frame (52) is slidably connected to one side of the toothed plate (514). Two driven gears (515) mesh on the other side of the toothed plate (514). One side of each of the two driven gears (515) is fixedly connected to two column brushes (53).

8. A household air conditioning purification and ventilation device with self-cleaning function according to claim 7, characterized in that, The cleaning mechanism (5) also includes a push plate (54) rotatably connected to the inner wall of the housing (3). One end of the push plate (54) is slidably connected to the pull rod (409), and the other end of the push plate (54) is slidably connected to a crossbar (55). One end of the crossbar (55) is fixedly connected to the movable frame (52), and one side of the movable frame (52) is slidably connected to the ventilation pipe (1). Two scrapers (56) are symmetrically arranged at the bottom of the ventilation pipe (1), and protrusions are evenly arranged on the two scrapers (56).

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