Pet purifier with self-cleaning function

Abstract

The utility model relates to a pet purifier with a self-cleaning function, which is characterized in that attachments such as pet hair and scurf attached to an annular filter screen are actively intercepted and continuously and automatically cleared through a self-cleaning module arranged on the front side of a purification module, and are collected into a dust collection module; large-particle attachments such as pet hair are effectively prevented from directly entering and blocking the post-stage purification module, so that the effective service life of the purification module is prolonged, the purification efficiency of the purification module on particles and peculiar smell is kept for a long time, the maintenance burden of a user for frequently detaching, cleaning or replacing a filter screen is relieved, and the user experience is improved. And the replacement frequency of the core filter screen is reduced, so that the use cost of a user is effectively reduced, and the practicability of the product and the user experience are improved.

Description

Technical Field

[0001] This application relates to the field of air purifier technology, and in particular to a pet air purifier with a self-cleaning function. Background Technology

[0002] With the improvement of people's living standards and increasing attention to indoor air quality, air purifiers have become common appliances in many homes and offices. In particular, for families with pets, pet hair, dander, and pet odors are major factors affecting indoor air quality. Therefore, pet air purifiers specifically designed for pet environments have emerged, their main function being to effectively remove pet hair and dust from the air and eliminate odors.

[0003] Existing pet air purifiers typically employ a multi-layered filter structure to handle pet hair. A common practice is to create a specific spacing (e.g., 3-5mm) between the ribs of the outer filter, allowing pet hair to pass through and enter the purifier, where it is then intercepted and filtered by a finer internal filter or filtration module (such as a filter layer containing activated carbon). However, despite the interception by the inner filter, some fine hair and dander can still penetrate and adhere to the core filtration module. Over time, this accumulated hair clogs the micropores of the filtration module, reducing its filtration efficiency for particulate matter and severely impacting its odor-absorbing function, leading to a significant decline in the overall performance of the purifier. Furthermore, to maintain the purifier's effectiveness, users need to regularly disassemble, clean, or wash the outer and inner filters. When hair contamination is severe, these filters may even need to be replaced, undoubtedly increasing the user's operating costs and maintenance burden. Utility Model Content

[0004] To address the aforementioned issues, this application provides a pet purifier with a self-cleaning function that can actively intercept and automatically scrape off collected pet hair, maintain long-lasting purification performance, and reduce user maintenance burden and usage costs.

[0005] To achieve the above objectives, this application designs a pet air purifier with a self-cleaning function, comprising:

[0006] A rack, within which a purification module is installed;

[0007] The self-cleaning module is located on the air inlet side of the frame and in front of the purification module. The self-cleaning module includes a mounting frame, an annular filter, and a drive mechanism. The annular filter is rotatably mounted on the mounting frame, and the drive mechanism is used to drive the annular filter to rotate on the mounting frame.

[0008] The dust collection module is at least partially disposed within the frame and located below the self-cleaning module. The scraper is disposed on the dust collection module or the frame and extends along the width direction of the annular filter screen, closely adhering to the mesh surface of the annular filter screen. It is used to continuously scrape off the adhering substances on the annular filter screen during the rotation of the annular filter screen, and to cause the adhering substances to fall into the inner cavity of the dust collection module.

[0009] Preferably, the driving mechanism includes a first roller, a second roller, a third roller, and a motor. The second roller and the third roller are rotatably mounted on opposite edges of the upper and lower sides of the mounting frame, respectively. The first roller is rotatably mounted on the frame and arranged side by side behind the second roller. The annular filter screen is sleeved on the second roller and the third roller, and the inner side of the annular filter screen is clamped between the first roller and the second roller. The motor is driven by the second roller to drive the annular filter screen to rotate.

[0010] Preferably, the drive mechanism further includes a first gear, a second gear, and a third gear, the output shaft of the motor is connected to the first gear, the first gear meshes with the second gear, the second gear is connected to the first roller and meshes with the third gear, and the third gear is connected to the second roller.

[0011] Preferably, the first roller, the second roller, and the third roller have the same radial cross-sectional structure, each comprising:

[0012] The shaft body has a radial cross-section that is an irregular shape or a regular polygonal structure.

[0013] A hard rubber layer is sleeved on the outer peripheral surface of the shaft body, the inner peripheral surface of the hard rubber layer is in close contact with the outer peripheral surface of the shaft body, and the outer peripheral surface of the hard rubber layer is irregularly shaped;

[0014] A soft rubber layer is fitted onto the outer periphery of the hard rubber layer.

[0015] Preferably, bearings are respectively sleeved at both ends of the third roller, and a slider is connected to the outer ring of the bearing. The mounting frame is provided with a groove that cooperates with the slider. A spring that abuts against the slider and is in a compressed state is provided in the groove. The bearing, slider and spring constitute a self-tensioning structure that automatically tensions the annular filter screen.

[0016] Preferably, the dust collection module has a breathable dust collection bag inside its cavity, which is used to collect the adhering material scraped off and falling from the annular filter by the scraper; the frame has a fan chamber located at the rear of the purification module, and a fan is installed inside the fan chamber; the dust collection module has ventilation holes; the frame is rotatably connected to the bottom of the fan chamber with an opening and closing cover; the frame forms a connecting channel between the opening and closing cover and the ventilation holes, allowing the inner cavity of the dust collection module to communicate with the fan chamber; the opening and closing cover is used to open and close the connecting channel.

[0017] Preferably, the dust collection module includes a blade holder and a dust collection box. The blade holder is fixedly connected to the frame and located below the self-cleaning module. The dust collection box is installed on the frame in a pull-out manner and located below the blade holder. The blade holder has a collection port at its top, and the scraper is obliquely fixed to the top of the blade holder, with a portion of the scraper extending above the collection port. The front side of the top of the dust collection box has a dust collection inlet suitable for connecting to the collection port, and the ventilation hole is located at the rear side of the top of the dust collection box.

[0018] Preferably, the dust collection box includes a box body and a pressure plate detachably disposed on the box body, wherein the dust collection inlet and the ventilation hole are both opened on the pressure plate; the lower surface of the pressure plate is provided with a mounting part surrounding the dust collection inlet, the outer peripheral wall of the mounting part is provided with a protruding ring, and the opening of the dust collection bag is provided with an elastic stretch band, the opening of the dust collection bag is sleeved on the protruding ring of the mounting part through the elastic stretch band.

[0019] Preferably, the frame is provided with a hollow first elastic element at the connection between the fan chamber and the ventilation hole, and the periphery of the bottom end of the first elastic element is provided with a first elastic sealing lip that rolls outward, and the first elastic sealing lip forms a sealing contact with the opening edge of the ventilation hole; a second elastic element is provided at the opening of the dust collection port facing the dust collection box, and the periphery of the bottom end of the second elastic element is provided with a second elastic sealing lip that rolls outward, and the second elastic sealing lip forms a sealing contact with the opening edge of the dust collection inlet.

[0020] Preferably, the dust collection box is a fully transparent structure; or, at least one of the front panel, left panel, and right panel of the dust collection box is a transparent structure or at least one of them is provided with a transparent observation window.

[0021] The self-cleaning pet air purifier designed in this application actively intercepts and continuously removes pet hair, dander, and other adhering substances from the annular filter via a self-cleaning module located in front of the purification module. This process collects the residue in the dust collection module, effectively preventing large particles like pet hair from directly entering and clogging the subsequent purification module. This extends the effective lifespan of the purification module and maintains its purification efficiency against particulate matter and odors over a long period. It also reduces the maintenance burden on users by minimizing the need for frequent disassembly, cleaning, or filter replacement. Furthermore, the reduced frequency of core filter replacement effectively lowers user costs, enhancing the product's practicality and user experience. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of a pet air purifier with self-cleaning function provided in an embodiment of this application.

[0023] Figure 2 yes Figure 1 Exploded view.

[0024] Figure 3 This is a vertical cross-sectional view of a pet purifier with self-cleaning function provided in an embodiment of this application.

[0025] Figure 4 yes Figure 3 Enlarged diagram of point A in the middle.

[0026] Figure 5 This is an exploded view of the self-cleaning module provided in the embodiments of this application.

[0027] Figure 6 This is a schematic diagram of the self-tensioning structure provided in the embodiments of this application.

[0028] Figure 7 This is a perspective cross-sectional view of the self-cleaning module provided in the embodiments of this application.

[0029] The components include: frame 10, purification module 11, fan chamber 12, fan 13, opening and closing cover 14, rotating shaft 141, self-cleaning module 20, mounting bracket 21, slide 211, annular filter 22, drive mechanism 23, first roller 231, second roller 232, third roller 233, motor 234, first gear 235, second gear 236, third gear 237, dust collection module 30, dust collection bag 31, ventilation hole 32, knife holder 33, collection port 331, dust collection box 34, dust collection inlet 341, box body 342, pressure plate 343, mounting part 344, convex ring 345, scraper 40, shaft body 50, hard rubber layer 51, soft rubber layer 52, bearing 53, slider 54, spring 55, self-tensioning structure 56, first elastic element 60, first elastic sealing lip 61, second elastic element 70, and second elastic sealing lip 71. Detailed Implementation

[0030] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0031] like Figure 1 , Figure 2 As shown in the figure, the pet air purifier with self-cleaning function described in this embodiment aims to solve the problems of inconvenient maintenance, easy clogging of filter components by pet hair and other deposits, and purification efficiency failure in related technologies. The pet air purifier mainly includes a frame 10, a self-cleaning module 20, a dust collection module 30, and a scraping component 40.

[0032] Specifically, the frame 10 serves as the overall support structure for the purifier. It can be integrally molded from high-strength engineering plastic using injection molding or assembled from metal sheets to ensure structural stability and durability. The frame 10 houses the purification module 11. In practice, the frame 10 contains an air duct that guides airflow. The purification module 11 is positioned within this duct and can utilize a combination of high-resistance HEPA and activated carbon filters to deeply purify fine particulate matter and odor molecules in the air.

[0033] like Figures 3 to 5 As shown, the self-cleaning module 20 is located on the air inlet side of the frame 10 and in front of the purification module 11, serving as the first physical barrier for air entering the duct, effectively intercepting attachments such as pet hair and lint, thus reducing the filtration burden on the subsequent purification module 11. The self-cleaning module 20 mainly includes a mounting frame 21, an annular filter 22, and a drive mechanism 23. The annular filter 22 is rotatably mounted on the mounting frame 21, and the drive mechanism 23 drives the annular filter 22 to rotate on the mounting frame 21. Specifically, the self-cleaning module 20 can be vertically positioned at the air inlet of the duct, making the annular filter 22 vertical, or it can be positioned at a slight angle to the vertical direction, such as an angle between 0.5 and 3 degrees. In this embodiment, the annular filter 22 can be an endless ring-shaped structure made of nylon mesh, plastic mesh with a certain pore size, or other flexible materials suitable for efficiently intercepting pet hair, dander, and other attachments.

[0034] The dust collection module 30 is at least partially disposed within the frame 10 and located below the self-cleaning module 20. It is primarily used to collect deposits scraped off the annular filter 22. Specifically, the dust collection module 30 has an opening on the side facing the self-cleaning module 20 to receive fallen deposits. Furthermore, for ease of cleaning, the dust collection module 30 can be designed as a box-like structure that can be pulled out of the frame 10, a collection chamber with a flip-open top cover, or a cavity with an openable panel on the side, allowing users to easily remove or open it to empty the collected deposits.

[0035] The scraper 40 is mounted on the dust collection module 30 or the frame 10 to ensure stable engagement with the rotating annular filter screen 22. The scraper 40 extends along the width of the annular filter screen 22 and fits tightly against its surface. It continuously scrapes away deposits adhering to the annular filter screen 22 as it rotates, causing the deposits to fall into the inner cavity of the dust collection module 30. Specifically, the scraper 40 can be an elastic scraper strip, such as a silicone strip with good elasticity and wear resistance, to gently scrape the filter screen surface. Alternatively, a brush strip with dense bristles can be used to enhance the removal of fine fibrous deposits while protecting the filter screen surface from excessive wear.

[0036] In this way, the drive mechanism 23 drives the annular filter screen 22 to rotate periodically or continuously, and the fixed scraper 40 continuously scrapes and cleans the surface of the filter screen, and automatically collects the scraped-off attachments into the dust collection module 30. This achieves automatic cleaning of the pre-filter screen, avoids clogging caused by the accumulation of attachments, effectively protects the core purification module 11 in the downstream stage, extends its service life, and effectively reduces the frequency and difficulty of manual cleaning by the user.

[0037] In some embodiments, such as Figure 3 , Figure 4 , Figure 5 As shown, the drive mechanism 23 includes a first roller 231, a second roller 232, a third roller 233, and a motor 234. The second roller 232 and the third roller 233 are rotatably mounted on the opposite edges of the upper and lower sides of the mounting frame 21, respectively. The first roller 231 is rotatably mounted on the frame 10 and arranged side by side behind the second roller 232. An annular filter screen 22 is sleeved on the second roller 232 and the third roller 233. The inner side of the annular filter screen 22 is clamped between the first roller 231 and the second roller 232, so that the inner side of the annular filter screen 22 is more firmly clamped and driven synchronously, improving the friction transmission efficiency and effectively avoiding slippage that may occur under high load or humid environments. The motor 234 is connected to the second roller 232 to drive the annular filter screen 22 to rotate. In specific implementation, the annular filter screen 22 is detachably sleeved on the second roller 232 and the third roller 233 to form a circulation path. Its overall shape can be as follows: Figure 3 The ring-shaped structure shown resembles a flat runway. It forms an arc-shaped segment around the second roller 232 and the third roller 233, while a straight segment with relatively parallel front and rear sides is formed between the two rollers. The drive mechanism 23 can be a motor, which drives the second roller 232 to rotate at a preset speed through a gear transmission assembly or a synchronous belt transmission assembly, thereby driving the annular filter screen 22 to rotate continuously and cyclically on the mounting frame 21.

[0038] In some embodiments, such as Figure 5 As shown, the drive mechanism 23 also includes a first gear 235, a second gear 236, and a third gear 237. The output shaft of the motor 234 is connected to the first gear 235, which meshes with the second gear 236. The second gear 236 is connected to the first roller 231 and meshes with the third gear 237, which is connected to the second roller 232. This gear transmission structure is compact and can effectively distribute the power of the motor to the second roller 232 and the third roller 233, ensuring their synchronous counter-rotation and providing a solid power foundation for the stable operation of the annular filter 22.

[0039] In some embodiments, such as Figure 4 As shown, the first roller 231, the second roller 232, and the third roller 233 have the same radial cross-sectional structure, each including a shaft 50, a hard rubber layer 51, and a soft rubber layer 52. Specifically, the radial cross-section of the shaft 50 is an irregular structure or a regular polygonal structure. This irregular structure can be a regular hexagon or other non-standard circular cross-section to form a reliable torque transmission and axial fixation with the hard rubber layer 51. The hard rubber layer 51 is sleeved on the outer peripheral surface of the shaft 50, and the inner peripheral surface of the hard rubber layer 51 is in close contact with the outer peripheral surface of the shaft 50. The outer peripheral surface of the hard rubber layer 51 is irregularly shaped, for example, it can be machined with circumferential ribs, teeth, or other irregular surfaces to form a stable mechanical interlock and bonding force with the outermost soft rubber layer 52. The soft rubber layer 52 is sleeved on the outer peripheral surface of the hard rubber layer 51. The soft rubber layer 52, as the outermost layer that directly contacts the roller and the annular filter screen 22, is preferably made of soft rubber or elastomer material with a high coefficient of friction, good elasticity and certain wear resistance, in order to prevent the soft rubber layer 52 from sliding or peeling off on the hard rubber layer 51.

[0040] In some embodiments, such as Figure 5 , Figure 6 As shown, bearings 53 are respectively sleeved at both ends of the third roller 233. A slider 54 is connected to the outer ring of the bearing 53. The mounting frame 21 is provided with a groove 211 that cooperates with the slider 54. A spring 55 is provided in the groove 211 that abuts against the slider 54 and is in a compressed state. The bearings 53, slider 54 and spring 55 constitute a self-tensioning structure 56 that automatically tensions the annular filter screen 22. The main function of the self-tensioning structure 56 is to apply a continuous force to the third roller 233 through elastic force, which can stretch the annular filter screen 22, so that it can dynamically adjust its position according to the actual length of the annular filter screen 22, thereby maintaining the preset tension of the filter screen.

[0041] In specific implementation, such as Figure 6As shown, the two ends of the third roller 233 are connected and fixed to the inner ring of the bearing 53 through its shaft 50. One end of the spring 55 acts on the slider 54, and the other end abuts against the fixed end wall of the slide groove 211. The pre-compression elastic force of the spring 55 continuously pushes the slider 54 together with the bearing 53 to drive the third roller 233 to move away from the second roller 232, thereby applying and maintaining tension on the annular filter screen 22 sleeved therebetween.

[0042] In some embodiments, such as Figure 3 , Figure 4 , Figure 7 As shown, the dust collection module 30 has a breathable dust collection bag 31 inside its cavity. The dust collection bag 31 is used to collect the attached materials scraped off and falling from the annular filter screen 22 by the scraper 40. The frame 10 has a fan chamber 12 located behind the purification module 11. The fan chamber 12 contains a fan 13, and the dust collection module 30 has ventilation holes 32. During operation, the fan 13 in the fan chamber 12 drives the air to flow sequentially through the self-cleaning module 20 and the purification module 11 in the air duct according to a predetermined flow direction, and finally delivers clean air from the exhaust port of the air duct.

[0043] This structural design generates a negative pressure environment within the fan chamber 12 when the fan 13 rotates. This negative pressure acts on the inner cavity of the dust collection module 30 through the ventilation holes 32, creating a negative pressure environment inside the dust collection module 30 as well. This helps to actively draw the debris scraped off by the scraper 40 into the breathable dust collection bag 31, preventing the debris from escaping. Furthermore, by connecting the fan chamber 12 and the inner cavity of the dust collection module 30, the required negative pressure can be created within the dust collection module 30 without the need for an additional independent suction device. This not only simplifies the overall internal structure of the equipment, making it more compact, but also reduces manufacturing costs and potential failure points. When the contaminants collected in the dust collection bag 31 reach a certain amount, the user can remove and discard the full dust collection bag 31 and replace it with a new one. The entire maintenance process is simple, quick, and hygienic. In another embodiment, the dust collection bag 31 can also be made of a waterproof and washable material. In this case, after the user takes out the dust collection bag 31, he / she can empty the attached material inside, and then clean and dry the dust collection bag 31 before reinstalling it back into the dust collection module 30, thereby realizing the reuse of the dust collection bag 31 and reducing the cost of consumables.

[0044] Furthermore, the frame 10 forms a connection channel between the opening / closing cover 14 and the ventilation hole 32, allowing the inner cavity of the dust collection module 30 to communicate with the fan chamber 12. The opening / closing cover 14 is used to open and close the connection channel. In a specific implementation, such as... Figure 4As shown, the hinged cover 14 can be a plate structure whose shape is adapted to the area to be covered at the bottom of the fan chamber 12. The hinged cover 14 is pivotally connected to the inner or outer wall of the bottom of the fan chamber 12 via a pivot 141 on one side. That is, through the pivot 141, the hinged cover 14 can rotate around its axis, thereby switching between the closed and open positions to open and close the connection channel. Of course, in addition to the above-mentioned rotary design, the hinged cover 14 can also be height-adjustable; for example, the hinged cover 14 can achieve its height-adjusting action through a guide rail and a small lead screw motor. Regardless of the activity method used, the key is that when the opening and closing cover 14 is driven to its closed position, its main body can effectively cut off the connection channel to block the airflow between the inner cavity of the dust collection module 30 and the fan chamber 12, so as to prevent the air from drifting into the fan chamber 12 through the ventilation hole 32 or escaping through the top opening of the dust collection module 30 due to the slight disturbance of the ambient airflow or the movement of the purifier itself when the purifier is turned off or in standby mode.

[0045] In some embodiments, such as Figure 2 , Figure 4 , Figure 7 As shown, the dust collection module 30 includes a blade holder 33 and a dust collection box 34. The blade holder 33 is fixedly connected to the frame 10 and located below the self-cleaning module 20. The dust collection box 34 is installed on the frame 10 in a pull-out manner and located below the blade holder 33. The blade holder 33 has a collection port 331 at its top, and the scraper 40 is obliquely fixed to the top of the blade holder 33. The angle between the scraper 40 and the vertical direction, i.e., the inclination angle, can be set from 5 degrees to 40 degrees, specifically 5 degrees, 10 degrees, 15 degrees, 20 degrees, 25 degrees, 30 degrees, 35 degrees, 40 degrees, etc. Furthermore, a portion of the scraper 40 extends above the collection port 331, ensuring that the scraped material falls into the collection port 331. The front of the top of the dust collection box 34 is provided with a dust collection inlet 341 suitable for connecting to the collection port 331, allowing the scraped material to be effectively collected by the dust bag 31. A ventilation hole 32 is located on the rear side of the top of the dust collection box 34. Using this structural design, the scraper 40, together with the blade holder 33 serving as its mounting base, is securely fixed to the frame 10, ensuring the long-term accuracy and stability of the relative position between the scraper 40 and the annular filter 22, avoiding positional shifts caused by frequent disassembly and assembly, thus ensuring continuous and effective cleaning. Simultaneously, the dust collection box 34, which bears and processes the attached material and therefore requires relatively frequent maintenance, can be easily and completely removed from the frame 10 body for maintenance, offering high ease of use.

[0046] In some embodiments, such as Figure 2 , Figure 4 , Figure 7As shown, the dust collection box 34 includes a box body 342 and a pressure plate 343 detachably disposed on the box body 342. The dust collection inlet 341 and the ventilation hole 32 are both opened on the pressure plate 343 so that they can be removed and cleaned separately. The lower plate surface of the pressure plate 343 is provided with a mounting part 344 surrounding the dust collection inlet 341. The outer peripheral wall of the mounting part 344 is provided with a protruding ring 345. The opening of the dust collection bag 31 is provided with an elastic telescopic strap. The opening of the dust collection bag 31 is sleeved on the protruding ring 345 of the mounting part 344 through the elastic telescopic strap. In a specific implementation, the mounting part 344 can be designed as a short tubular structure that surrounds the opening edge of the dust collection inlet 341 and extends into the dust collection box 34. The convex ring 345 is arranged around the outer wall of the mounting part 344 to form an annular groove with the pressure plate 343. In conjunction with this, an elastic elastic band is sewn or fixed at the bag opening of the dust collection bag 31. The elastic elastic band gives the bag opening of the dust collection bag 31 a certain tightening force. When the user installs the dust collection bag 31, the bag opening can be opened and put over the mounting part 344. The elastic elastic band will tighten and be stuck into the groove due to its own elastic restoring force, thereby effectively preventing the dust collection bag 31 from slipping off the mounting part 344 due to gravity or accidental disturbance.

[0047] In some embodiments, such as Figure 4 As shown, the frame 10 has a hollow first elastic element 60 at the connection between the fan chamber 12 and the ventilation hole 32. The periphery of the bottom end of the first elastic element 60 has a first elastic sealing lip 61 that rolls outward. The first elastic sealing lip 61 forms a sealing contact with the opening edge of the ventilation hole 32. In this way, the top end of the first elastic element 60 is fixedly connected to the bottom wall of the fan chamber 12 and keeps it airtight, so that its hollow channel is connected to the internal space of the fan chamber 12. The first elastic sealing lip 61 at its bottom end has a certain flexibility and a preset deformation. When the dust collection box 34 is pushed into the frame 10 and reaches its predetermined working position, the first elastic sealing lip 61 forms a sealing contact with the opening edge of the ventilation hole 32, ensuring that the negative pressure generated by the fan 13 can act more effectively on the inside of the dust collection box 34, assisting in dust collection.

[0048] Similarly, such as Figure 4 , Figure 7 As shown, a second elastic element 70 is provided at the opening of the dust collection port 331 facing the dust collection box 34. A second elastic sealing lip 71, rolled outwards, is provided around the bottom edge of the second elastic element 70, forming a sealing contact with the opening edge of the dust collection inlet 341. In this embodiment, the structures of the second elastic element 70 and the second elastic sealing lip 71 are the same as those of the first elastic element 60 and the first elastic sealing lip 61, respectively.

[0049] In some embodiments, the dust collection box 34 is a fully transparent structure; or, at least one of the front panel, left panel, and right panel of the dust collection box 34 is a transparent structure or at least one of them is provided with a transparent observation window, so that users can conveniently visually judge the capacity status of the deposits inside the dust collection box 34 without interfering with the normal operation of the purifier or without frequently disassembling parts.

[0050] The pet air purifier with self-cleaning function provided in this application actively intercepts and continuously removes pet hair, dander, and other adhering substances from the annular filter via its self-cleaning module located in front of the purification module. This process collects these substances into the dust collection module, effectively preventing large particles such as pet hair from directly entering and clogging the subsequent purification module. This extends the effective working life of the purification module and maintains its purification efficiency against particulate matter and odors over a long period. It reduces the maintenance burden on users by requiring frequent disassembly, cleaning, or replacement of the filter. Furthermore, the reduced frequency of core filter replacement effectively lowers user costs, enhancing the product's practicality and user experience.

[0051] In the description of this application, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0052] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0053] Finally, it should be noted that the above descriptions are merely preferred embodiments of this application and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A pet air purifier with self-cleaning function, characterized in that, include: A rack, within which a purification module is installed; The self-cleaning module is located on the air inlet side of the frame and in front of the purification module. The self-cleaning module includes a mounting frame, an annular filter, and a drive mechanism. The annular filter is rotatably mounted on the mounting frame, and the drive mechanism is used to drive the annular filter to rotate on the mounting frame. The dust collection module is at least partially disposed within the frame and located below the self-cleaning module. The scraper is disposed on the dust collection module or the frame and extends along the width direction of the annular filter screen, closely adhering to the mesh surface of the annular filter screen. It is used to continuously scrape off the adhering substances on the annular filter screen during the rotation of the annular filter screen, and to cause the adhering substances to fall into the inner cavity of the dust collection module.

2. The pet air purifier with self-cleaning function according to claim 1, characterized in that, The driving mechanism includes a first roller, a second roller, a third roller, and a motor. The second roller and the third roller are rotatably mounted on opposite edges of the upper and lower sides of the mounting frame, respectively. The first roller is rotatably mounted on the frame and arranged side by side behind the second roller. The annular filter screen is sleeved on the second roller and the third roller, and the inner side of the annular filter screen is clamped between the first roller and the second roller. The motor is connected to the second roller for driving the annular filter screen to rotate.

3. The pet air purifier with self-cleaning function according to claim 2, characterized in that, The drive mechanism further includes a first gear, a second gear, and a third gear. The output shaft of the motor is connected to the first gear, the first gear meshes with the second gear, the second gear is connected to the first roller and meshes with the third gear, and the third gear is connected to the second roller.

4. The pet air purifier with self-cleaning function according to claim 2, characterized in that, The first, second, and third rollers have the same radial cross-sectional structure, each including: The shaft body has a radial cross-section that is an irregular shape or a regular polygonal structure. A hard rubber layer is sleeved on the outer peripheral surface of the shaft body, the inner peripheral surface of the hard rubber layer is in close contact with the outer peripheral surface of the shaft body, and the outer peripheral surface of the hard rubber layer is irregularly shaped; A soft rubber layer is fitted over the outer periphery of the hard rubber layer.

5. The pet air purifier with self-cleaning function according to claim 2, characterized in that, Bearings are respectively sleeved at both ends of the third roller, and a slider is connected to the outer ring of the bearing. The mounting frame is provided with a groove that cooperates with the slider. A spring that abuts against the slider and is in a compressed state is provided in the groove. The bearing, slider and spring constitute a self-tensioning structure that automatically tensions the annular filter screen.

6. The pet air purifier with self-cleaning function according to claim 1, characterized in that, The dust collection module has a breathable dust collection bag inside its cavity, which is used to collect the attached material that is scraped off and falls from the annular filter by the scraper. The frame has a fan chamber located at the rear of the purification module, and a fan is installed inside the fan chamber. The dust collection module has ventilation holes. The frame is rotatably connected to the bottom of the fan chamber with an opening and closing cover. The frame forms a connecting channel between the opening and closing cover and the ventilation holes, which connects the inner cavity of the dust collection module with the fan chamber. The opening and closing cover is used to open and close the connecting channel.

7. The pet air purifier with self-cleaning function according to claim 6, characterized in that, The dust collection module includes a blade holder and a dust collection box. The blade holder is fixedly connected to the frame and located below the self-cleaning module. The dust collection box is installed on the frame in a pull-out manner and located below the blade holder. The blade holder has a collection port at its top, and the scraper is obliquely fixed to the top of the blade holder, with a portion of the scraper extending above the collection port. The front side of the top of the dust collection box has a dust collection inlet suitable for communicating with the collection port, and the ventilation hole is located at the rear side of the top of the dust collection box.

8. The pet air purifier with self-cleaning function according to claim 7, characterized in that, The dust collection box includes a box body and a pressure plate detachably disposed on the box body. The dust collection inlet and the ventilation hole are both opened on the pressure plate. The lower surface of the pressure plate is provided with a mounting part surrounding the dust collection inlet. A protruding ring is provided on the outer peripheral wall of the mounting part. An elastic stretch band is provided at the bag opening of the dust collection bag. The bag opening of the dust collection bag is sleeved on the protruding ring of the mounting part through the elastic stretch band.

9. The pet air purifier with self-cleaning function according to claim 7, characterized in that, The frame is provided with a hollow first elastic element at the connection between the fan chamber and the ventilation hole. The periphery of the bottom end of the first elastic element is provided with a first elastic sealing lip that rolls outward. The first elastic sealing lip forms a sealing contact with the opening edge of the ventilation hole. The opening of the dust collection port facing the dust collection box is provided with a second elastic element. The periphery of the bottom end of the second elastic element is provided with a second elastic sealing lip that rolls outward. The second elastic sealing lip forms a sealing contact with the opening edge of the dust collection inlet.

10. The pet air purifier with self-cleaning function according to any one of claims 7-9, characterized in that, The dust collection box is a completely transparent structure; or, at least one of the front panel, left panel, and right panel of the dust collection box is a transparent structure or at least one of them is provided with a transparent observation window.

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