Self-cleaning device, cleaning apparatus and cleaning system

Abstract

The self-cleaning device, the cleaning device and the cleaning system provided by the present disclosure belong to the field of cleaning devices. The self-cleaning device comprises a switching assembly arranged at a communication air duct between a dust collection pipeline and a dust cup, and used for switching an opening state and a closing state of the communication air duct; wherein, in a base station dust collection working condition, the switching assembly makes the communication air duct in the opening state, so that a suction air flow formed by the base station at least flows through the communication air duct and the dust cup and then enters the base station; in a self-cleaning working condition, the switching assembly makes the communication air duct in the closing state, so that the suction air flow formed by the base station at least flows through a dust-air separation assembly and the dust cup and then enters the base station, to strip off particulate matters adhered to the dust-air separation assembly. The self-cleaning device, the cleaning device and the cleaning system provided by the present disclosure not only can complete the conventional dust cup dust collection function, but also can realize automatic cleaning of the dust-air separation assembly inside the cleaning device, thereby reducing the burden of manual disassembly and cleaning of the user.

Description

Technical Field

[0001] This disclosure belongs to the field of cleaning equipment technology, specifically relating to a self-cleaning device, cleaning equipment, and cleaning system. Background Technology

[0002] With the widespread adoption of cleaning equipment such as cordless and handheld vacuum cleaners, products equipped with automatic dust collection base stations have gradually become an important development trend in the market. After cleaning the floor, users can place the cleaning equipment at the base station. The base station's built-in fan activates, creating a negative pressure suction airflow that transfers dust, debris, hair, and other particulate matter collected in the dust cup to the dust bag or dust collection chamber inside the base station. This type of structure reduces the frequency of manual dust emptying and improves the convenience of daily use, thus it is widely used in various types of household cleaning equipment.

[0003] Existing vacuum cleaners typically include a dust cup, suction pipe, and a dust-air separation component. This component separates and filters the dust-laden airflow entering the device during operation, trapping particulate matter at the front and allowing cleaner air to continue to the rear stages. Over time, the dust cup accumulates visible debris, and fine dust, lint, and other suspended contaminants gradually adhere to the surface and internal channels of the dust-air separation component. This accumulation is particularly pronounced in scenarios involving repeated inhalation of fine dust, powder, or fibrous debris. Summary of the Invention

[0004] In existing automated dust collection base stations, the primary target of operation is usually limited to the debris inside the dust cup. That is, the suction airflow generated by the base station is mainly used to remove debris from the dust cup and transfer it inside the base station, making it difficult to effectively clean the dust-air separation components inside the cleaning equipment. Since the dust-air separation components are not the key components in the base station's dust collection process, the dust adhering to them often cannot be removed along with the empty dust cup. This results in the base station completing the automatic transfer of debris from the dust cup, but the dust-air separation components remaining in a dust-accumulated state.

[0005] In the above situations, in order to maintain the normal performance of the cleaning equipment, users usually still need to perform manual maintenance on the dust-air separation components periodically, such as disassembling the relevant parts and performing tapping, brushing, or washing. This maintenance method is not only cumbersome and time-consuming, but also diminishes the automated user experience that the automatic dust collection base station should have.

[0006] Meanwhile, long-term dust accumulation in the dust-air separation components can also affect the smooth flow of air, leading to decreased separation efficiency, increased ventilation resistance, and deterioration of overall performance stability during subsequent use of the cleaning equipment. Therefore, while existing automatic dust collection base stations can solve the problem of dust cup waste transfer to some extent, they still have significant shortcomings in the cleaning and maintenance of the dust-air separation components inside the cleaning equipment.

[0007] To address the above-mentioned technical problems, the purpose of this disclosure is to provide a self-cleaning device, cleaning equipment, and cleaning system that can achieve self-cleaning of the dust and gas separation components of the cleaning equipment, thereby reducing the burden of manual cleaning for users.

[0008] To achieve the above objectives, the technical solution provided in this disclosure is as follows:

[0009] Firstly, this disclosure provides a self-cleaning device for cleaning equipment. The cleaning equipment includes a dust cup, a dust-air separation component, and a suction pipe. The self-cleaning device includes a switching component located at the connecting ventilation duct between the suction pipe and the dust cup, used to switch the open and closed states of the connecting ventilation duct. In base station dust collection mode, the switching component keeps the connecting ventilation duct open, allowing airflow to pass through at least the connecting ventilation duct and the dust cup before entering the base station. In self-cleaning mode, the switching component keeps the connecting ventilation duct closed, allowing airflow to pass through at least the dust-air separation component and the dust cup before entering the base station, thereby removing particulate matter attached to the dust-air separation component. By switching the open and closed states of the connecting ventilation duct using the switching component, the cleaning equipment can switch airflow paths between dust cup dust collection and dust-air separation component self-cleaning modes when working with a base station. This not only enables automatic transfer of debris from the dust cup but also automatic removal of particulate matter attached to the dust-air separation component, improving cleaning depth and reducing manual maintenance burden.

[0010] In one or more embodiments, the switching component includes a cover movable relative to the connecting ventilation duct, moving the cover opening or closing the connecting ventilation duct. By configuring the cover to be movable relative to the connecting ventilation duct, the opening and closing of the connecting ventilation duct has an easily implementable structural basis, thereby improving the reliability of duct switching and the accuracy of airflow path control.

[0011] In one or more embodiments, the self-cleaning device includes a drive assembly for driving the cover, the drive assembly including a drive member and a transmission member, the transmission member connecting the drive member and the cover. By providing a drive assembly for driving the cover and adopting a separate structure for the drive member and the transmission member, it is beneficial to improve the stability and controllability of the cover opening and closing action.

[0012] In one or more embodiments, the driving component includes a motor and a reduction gear set, the output shaft of the motor is connected to the input gear of the reduction gear set, and the transmission component is connected to the output gear of the reduction gear set. By using a motor and a reduction gear set as the driving component, the power output by the motor is reduced in speed before being transmitted to the subsequent transmission structure, which helps to obtain torque and speed more suitable for the cover plate's movement requirements, thereby improving the smoothness of the movement and the reliability of the drive.

[0013] In one or more embodiments, the transmission component includes a transmission gear and a screw. The transmission gear meshes with the output gear. The transmission gear has a threaded hole adapted to the screw. The screw is screwed into the threaded hole and connected to the cover plate. By setting the transmission gear and screw, and utilizing the threaded engagement between the threaded hole and the screw to convert rotational motion into linear motion, the cover plate can be driven to move more stably, thereby improving the position control accuracy during the opening or closing of the ventilation duct.

[0014] In one or more embodiments, the self-cleaning device further includes a dust-scraping assembly connected to the screw. The dust-scraping assembly includes a connecting ring and a scraper blade disposed on the connecting ring. The connecting ring is connected to the screw and can move with the screw to drive the scraper blade to scrape the filter screen of the dust-gas separation assembly. By providing a dust-scraping assembly connected to the screw, the screw can drive the cover plate to move while simultaneously driving the scraper blade to scrape the filter screen, thereby further realizing mechanical dust scraping of the filter screen on the basis of airflow self-cleaning and improving the cleaning effect on the dust-gas separation assembly.

[0015] In one or more embodiments, the cover plate is connected to the connecting ring and can move with the connecting ring. By connecting the cover plate to the connecting ring and moving synchronously with the connecting ring, the movement of the cover plate and the movement of the dust scraping assembly are linked, which helps to simplify the structure, reduce the driving links, and improve the coordination between air duct switching and filter dust scraping.

[0016] In one or more embodiments, the transmission component further includes a guide rod connected to the connecting ring. The guide rod is arranged along the axial direction of the screw and is used to guide the movement of the connecting ring. By providing a guide rod connected to the connecting ring to guide its movement, the connecting ring has a more stable motion trajectory when moving with the screw, thereby helping to reduce swaying and jamming, and improving the accuracy of the cover opening and closing and the scraping action of the scraper.

[0017] Secondly, this disclosure provides a cleaning device, including a main unit, a dust cup, a dust-air separation component, a suction pipe, and the aforementioned self-cleaning device. The dust cup can be connected to a base station, and the main unit provides negative pressure during operation to create an intake airflow passing through the suction pipe, dust cup, dust-air separation component, and main unit. By applying the aforementioned self-cleaning device to the cleaning device, the device not only possesses conventional suction functions but also achieves dust collection in the dust cup and self-cleaning of the dust-air separation component when connected to a base station, thereby improving the overall ease of use.

[0018] In one or more embodiments, the dust cup includes a receiving cavity, and the suction pipe is connected to the receiving cavity via a connecting ventilation duct; the dust-air separation assembly includes a filter screen, a cyclone separator, and a filter element arranged along the flow direction of the suction airflow, the filter screen and the cyclone separator being disposed in the receiving cavity, and the filter element being disposed in the flow channel between the cyclone separator and the main unit. By defining the arrangement relationship of the receiving cavity, filter screen, cyclone separator, and filter element, a clearer step-by-step processing path is formed within the cleaning equipment, thereby facilitating waste collection, particle separation, and subsequent filtration, improving the overall separation and filtration effect of the machine, and providing a structural basis for subsequent self-cleaning.

[0019] In one or more embodiments, the dust-gas separation assembly further includes a support bracket disposed within the receiving cavity, the filter screen and the cyclone separator supported by the support bracket, and a switching component of the self-cleaning device movably connected to the support bracket, and the switching component being movable along the axial direction of the dust cup. By providing a support bracket to support the filter screen and the cyclone separator, and by movably connecting the switching component to the support bracket and allowing it to move along the axial direction of the dust cup, the stability of the internal component installation and the accuracy of the switching component's movement are improved, ensuring reliable duct switching and the coordination between the dust-gas separation assembly.

[0020] In one or more embodiments, the main unit is provided with an exhaust channel for venting the cleaning equipment during operation; in self-cleaning mode, the switching component moves axially along the dust cup to close the connecting ventilation duct, allowing the suction airflow generated by the base station to flow through the exhaust channel, filter element, cyclone separator, filter screen, and receiving cavity before entering the base station. By limiting the suction airflow to flow through the exhaust channel, filter element, cyclone separator, filter screen, and receiving cavity before entering the base station in self-cleaning mode, the suction airflow can flush and clean each level of the dust-air separation component, improving the internal deep self-cleaning effect.

[0021] Thirdly, this disclosure provides a cleaning system including a base station and the aforementioned cleaning equipment, wherein the base station is used to interface with the cleaning equipment. By constructing a cleaning system including the aforementioned base station and cleaning equipment, the base station and the cleaning equipment form a cooperative relationship, enabling the cleaning equipment to not only complete cleaning operations independently but also to automatically collect dust and perform self-cleaning after returning to its original position with the help of the base station.

[0022] The self-cleaning device, cleaning equipment, and cleaning system disclosed herein utilize a switching component installed at the ventilation duct connecting the suction pipe and dust cup of the cleaning equipment. This allows the cleaning equipment to switch airflow paths under different operating conditions after docking with a base station. During base station dust collection, the ventilation duct remains open, allowing the suction airflow generated by the base station to effectively act on the dust cup, achieving automatic collection of debris. During self-cleaning, the ventilation duct is closed, and the suction airflow is guided through the dust-air separation component and the dust cup before entering the base station, thereby removing particulate matter adhering to the dust-air separation component. This not only performs the conventional dust cup collection function but also automatically cleans the dust-air separation component inside the cleaning equipment, reducing the burden of manual disassembly and cleaning for users, improving the product experience, and helping to maintain the cleanliness of the dust-air separation component and the long-term performance stability of the cleaning equipment. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments recorded in this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a cleaning system according to an embodiment of the present disclosure;

[0025] Figure 2 This is a partial cross-sectional view of a cleaning system according to an embodiment of the present disclosure;

[0026] Figure 3 This is a partial cross-sectional view of the cleaning device with the ventilation duct open in one embodiment of this disclosure;

[0027] Figure 4 This is a partial cross-sectional view of the cleaning equipment with the ventilation duct closed in one embodiment of this disclosure;

[0028] Figure 5 This is a schematic diagram of the structure of a self-cleaning device in one embodiment of the present disclosure.

[0029] Explanation of key figure labels:

[0030] 100-Cleaning system, 101-Base station, 102-Cleaning equipment, 103-Self-cleaning device, 1-Switching component, 11-Cover, 2-Drive component, 21-Driver, 211-Motor, 212-Reduction gear set, 213-Input gear, 214-Output gear, 22-Transmission component, 221-Transmission gear, 222-Screw, 223-Guide rod, 3-Dust scraping component, 31-Connecting ring, 32-Scraper, 4-Main unit, 41-Exhaust channel, 5-Dust cup, 51-Receiving cavity, 52-Connecting ventilation duct, 6-Dust-air separation component, 61-Filter screen, 62-Cyclone separator, 63-Filter element, 64-Flow channel, 65-Bracket, 7-Dust suction pipe. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0032] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0033] It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. In the embodiments shown in this disclosure, directional representations such as up, down, left, right, front, and back are relative and are used to explain the relative structure and movement of different components in this disclosure. These representations are appropriate when the components are in the positions shown in the figures. However, if the description of the component positions changes, then these representations are considered to change accordingly.

[0034] While existing technologies can automate the transfer of waste from dust cups using base stations, thus alleviating the burden of manual dust emptying for users to some extent, this type of automation mainly works in areas where waste accumulates easily. For components within the cleaning equipment responsible for gas-solid separation, filtration, and purification, fine dust, fiber particles, and other residues inevitably accumulate after repeated use. Because these contaminants are located within the internal flow path of the cleaning equipment, they are neither easily removed during regular dust collection nor effectively treated under current base station operating modes, ultimately requiring users to frequently disassemble and manually clean internal components.

[0035] Based on the above understanding, the inventors realized that the crux of the existing technology lies not simply in insufficient cleaning capacity, but more in the relatively singular action path and target of the base station during operation. In other words, the negative pressure capacity generated by the base station is not inherently unusable; the key is how to make it correspond to different flow paths and cleaning targets at different stages. If the cleaning equipment, when working with the base station, can no longer simply perform a single waste transfer action, but instead completes dust cup emptying and internal dust removal at different stages according to a predetermined logic, then the function of the base station can be expanded from a simple dust collection terminal to also possess the attributes of a self-cleaning and maintenance terminal for dust and gas separation components.

[0036] Specifically, the technical approach of this disclosure lies in reconstructing the processing flow after the cleaning equipment is connected to the base station from a single process into a phased composite process. In the first phase, the system maintains its ability to process conventional waste collection targets to ensure that the pollutants collected in the cleaning equipment can be smoothly transferred to the base station. In subsequent phases, by actively adjusting the internal airflow relationship, the airflow used for dust collection (which can be provided by the base station, the cleaning equipment host, or other suction equipment) is transformed from being mainly directed towards the waste storage area to being able to act on the internal dust and gas treatment area, thereby loosening, peeling off, and migrating particulate matter that has been attached to the relevant parts for a long time.

[0037] Furthermore, this disclosure does not merely view internal cleaning as a simple addition of the existing dust collection function, but emphasizes the inherent synergistic relationship between different processing stages. On the one hand, after the cleaning equipment is returned to the base station, it can still prioritize the transfer of existing waste to ensure that basic functions are not affected; on the other hand, after completing this basic process, the system can use the same power source to further clean the internal dust and gas treatment area, thereby avoiding long-term accumulation of internal dust.

[0038] Please refer to Figure 1 and Figure 2 As shown, a cleaning system 100 in one embodiment of this disclosure includes a base station 101 and a cleaning device 102, wherein the base station 101 is used to dock with the cleaning device 102.

[0039] The base station 101 serves as an external cooperating component corresponding to the cleaning equipment 102. It is used to receive the cleaning equipment 102 when it is not in operation and to form a docking relationship with the cleaning equipment 102. The cleaning equipment 102 serves as the main body for performing cleaning operations. When it is separated from the base station 101, it can independently complete environmental cleaning. After being returned to the base station 101, it can use the base station 101 to carry out subsequent maintenance.

[0040] The base station 101 and the cleaning equipment 102 have a mutually compatible docking relationship in their structural layout. This docking relationship serves two purposes: firstly, it supports, positions, and constrains the cleaning equipment 102, ensuring that it is in a predetermined cooperative position when docking with the base station 101; secondly, it provides the basis for establishing a functional connection between the base station 101 and the cleaning equipment 102. After docking with the base station 101, the cleaning equipment 102 can transition from its independent operation to a collaborative processing state involving the base station 101.

[0041] In one exemplary embodiment, please refer to Figure 1 and Figure 2 As shown, the cleaning device 102 includes a main unit 4, a dust cup 5, a dust-air separation component 6, a suction pipe 7, and a self-cleaning device 103. The dust cup 5 can be connected to the base station 101. The main unit 4 is used to provide negative pressure when the cleaning device 102 is working, so as to form a suction airflow that flows through the suction pipe 7, the dust cup 5, the dust-air separation component 6, and the main unit 4.

[0042] The components of the cleaning equipment 102 are arranged around the flow path of the dust-laden airflow inside the cleaning equipment 102, and together they form an overall structure that takes into account both cleaning operations and subsequent maintenance needs. The main unit 4, as the power core of the cleaning equipment 102, is used to provide negative pressure when the cleaning equipment 102 is working. After the negative pressure is formed, the external dust-laden airflow enters the suction pipe 7 under the action of pressure difference, and continues to enter the dust cup 5 and the dust-air separation component 6 along the preset flow direction, and finally flows to the main unit 4, thereby forming a suction airflow that flows through the suction pipe 7, dust cup 5, dust-air separation component 6 and main unit 4.

[0043] The suction duct 7 is located at the front of the intake airflow and mainly serves to introduce dust-laden airflow from the external environment into the cleaning device 102. Its structure is connected to the suction port of the cleaning device 102 and the subsequent dust cup 5, allowing the airflow to be transmitted smoothly after entering the cleaning device 102. By arranging the suction duct 7 upstream of the dust cup 5, the airflow to be treated can be introduced first through the suction duct 7, and then the dust cup 5 can collect the garbage and particulate matter carried in the airflow.

[0044] The dust cup 5 is located downstream of the suction pipe 7. On the one hand, it serves as a waste collection space to contain pollutants such as dust, debris, and hair in the intake airflow. On the other hand, it serves as an intermediate flow area during the airflow process, allowing the airflow to undergo preliminary settling, collection, or filtration after carrying particulate matter into the air. This allows the airflow to pass through the waste collection area before entering the subsequent dust-air separation component 6, thus enabling larger particles to preferentially enter the interior of the dust cup 5.

[0045] The dust cup 5 can interface with the base station 101. In addition to its regular garbage collection function, the dust cup 5 also serves as the component that establishes a functional connection between the cleaning equipment 102 and the base station 101. After completing the cleaning operation, the cleaning equipment 102 can enter a post-return collaborative processing state by utilizing the interface established between the dust cup 5 and the base station 101.

[0046] The dust-air separation component 6 is used to further process the dust-laden airflow entering the dust cup 5. After the initial settling of the waste, the dust-laden airflow still carries fine particles and suspended impurities. If it enters the main unit 4 directly without further separation and filtration, it will not only affect the working environment of the main unit 4. Therefore, the dust-air separation component 6 plays a role in separating, intercepting, or purifying the remaining particles in the airflow, making the airflow to the main unit 4 relatively cleaner.

[0047] The dust-air separation component 6 is positioned in the air passage between the dust cup 5 and the main unit 4. This arrangement facilitates the collection of large particles by the pre-stage dust cup 5 and protects the main unit 4 from direct dust intrusion, thus creating a progressively finer internal airflow treatment relationship. The main unit 4 is located at the end of the entire intake airflow path, serving not only as the source of negative pressure but also as the power source for maintaining the continuous operation of the entire intake path. Because the main unit 4 is at the end of the intake airflow, the structural relationships and arrangement of the pre-stage components revolve around the negative pressure generated by the main unit 4. This layout allows the intake airflow to pass through each functional part along a predetermined path, thereby improving the stability of the entire machine's operation.

[0048] The self-cleaning device 103 is installed in the cleaning equipment 102 and works in conjunction with the main unit 4, dust cup 5, dust-air separation component 6, and suction pipe 7 to enable the cleaning equipment 102 to not only perform routine vacuuming operations but also to perform internal maintenance functions in specific scenarios. Since the dust cup 5 and dust-air separation component 6 may accumulate a certain amount of dust and residual particles after long-term operation, relying solely on regular airflow is insufficient to maintain the internal components in an ideal state. Therefore, the self-cleaning device 103 installed in the cleaning equipment 102 enables the entire machine to possess internal self-maintenance capabilities in addition to performing basic cleaning operations.

[0049] In one exemplary embodiment, please refer to Figure 2 and Figure 3 As shown, the dust cup 5 includes a receiving cavity 51, and the dust suction pipe 7 is connected to the air inlet through the connecting ventilation duct 52; the dust-air separation assembly 6 includes a filter screen 61, a cyclone separator 62 and a filter element 63 arranged along the flow direction of the suction airflow. The filter screen 61 and the cyclone separator 62 are located in the receiving cavity 51, and the filter element 63 is located in the flow channel 64 between the cyclone separator 62 and the main unit 4.

[0050] The aforementioned structural design forms an air intake path connecting the suction pipe 7, the connecting ventilation duct 52, and the receiving cavity 51. This arrangement allows dust-laden airflow from the external environment to be drawn in through the suction pipe 7 under the negative pressure generated by the main unit 4, and then continue through the connecting ventilation duct 52 into the receiving cavity 51 of the dust cup 5. The establishment of a corresponding relationship between the suction pipe 7 and the receiving cavity 51 of the dust cup 5 via the connecting ventilation duct 52 provides a stable airflow transmission path between the suction pipe 7 and the dust cup 5, and also provides a structural basis for subsequent opening and closing control of the connecting ventilation duct 52.

[0051] The dust-air separation assembly 6 includes a filter screen 61, a cyclone separator 62, and a filter element 63 arranged along the direction of the intake airflow. That is, after the airflow enters the receiving cavity 51 of the dust cup 5, it does not flow directly to the main unit 4, but passes through the filter screen 61, the cyclone separator 62, and the filter element 63, so that the particulate matter entrained in the airflow is gradually intercepted or separated.

[0052] The filter screen 61 is located at the front end of the dust-air separation assembly 6 and inside the receiving cavity 51. The airflow entering the receiving cavity 51 first interacts with the filter screen 61. This arrangement is beneficial for blocking and initially filtering larger, more varied, or easily entangled particles in the airflow, preventing such particles from directly entering the subsequent separation area, thereby reducing the processing burden on the subsequent cyclone separator 62 and filter element 63.

[0053] Cyclone separator 62 is located downstream of filter 61 along the direction of the intake airflow and is also located inside the receiving cavity 51. The airflow, after preliminary treatment by filter 61, continues to enter cyclone separator 62. Through the rotating flow state formed inside cyclone separator 62, the fine particles still entrained in the airflow are further separated under the action of centrifugal force, inertia, and flow field distribution. The pre-filter 61 pre-treats larger particles and easily entangled impurities, which can reduce the possibility of large particles directly entering cyclone separator 62, allowing cyclone separator 62 to more concentratedly process smaller particles that are difficult to settle naturally, thereby helping to stabilize the separation effect of cyclone separator 62.

[0054] The filter element 63 (which can be a HEPA or other high-efficiency filter) is located in the flow channel 64 between the cyclone separator 62 and the main unit 4, meaning that the filter element 63 is located in the post-filtration stage of the entire dust and gas separation assembly 6. Although the airflow processed by the filter screen 61 and the cyclone separator 62 has completed the pre-filtration and cyclone separation, finer particles may still remain. By further installing the filter element 63 in the flow channel 64 between the cyclone separator 62 and the main unit 4, more refined filtration can be performed on the airflow that is about to enter the main unit 4, thereby reducing the possibility of fine dust entering the interior of the main unit 4.

[0055] In one exemplary embodiment, please refer to Figures 2 to 5 As shown, the self-cleaning device 103 includes a switching component 1, which is located at the connecting ventilation duct 52 between the dust collection pipe 7 and the dust cup 5, and is used to switch the open and closed states of the connecting ventilation duct 52. Specifically, in the dust collection mode of the base station 101, the switching component 1 keeps the connecting ventilation duct 52 in the open state, allowing airflow to pass through at least the connecting ventilation duct 52 and the dust cup 5 before entering the base station 101; in the self-cleaning mode, the switching component 1 keeps the connecting ventilation duct 52 in the closed state, allowing airflow to pass through at least the dust-air separation component 6 and the dust cup 5 before entering the base station 101, thereby removing particulate matter attached to the dust-air separation component 6.

[0056] By installing a switching component 1 at the connecting ventilation duct 52 between the suction pipe 7 and the dust cup 5, the suction airflow after the base station 101 and the cleaning equipment 102 are connected can flow along different paths under different operating conditions. This allows the suction capacity of the base station 101 to be used for dust collection in the dust cup 5 and further for the self-cleaning of the dust-air separation component 6. The switching component 1 is located at the connection point between the suction pipe 7 and the dust cup 5, in the transition passage area between the suction pipe 7 and the dust cup 5. It corresponds to both the on / off state of the connecting ventilation duct 52 and is related to the flow path of the suction airflow of the base station 101.

[0057] The connecting ventilation duct 52 serves as a connecting passage between the dust suction pipe 7 and the dust cup 5. On the one hand, it undertakes the function of normal airflow transmission, and on the other hand, it is the object of the switching component 1 to implement the opening and closing control. Whether the connecting ventilation duct 52 is in the open state determines whether the suction airflow generated by the base station 101 can preferentially enter the base station 101 through the existing path between the dust suction pipe 7 and the dust cup 5. Whether the connecting ventilation duct 52 is in the closed state determines whether the suction airflow is forced to change its flow path and instead passes through the dust-air separation component 6, thereby acting on the particulate matter attached to the dust-air separation component 6.

[0058] In the dust collection mode of base station 101, this mode can be understood as the cleaning equipment 102 having completed docking with base station 101, and the current processing objective being to transfer and recycle the dust, debris, and other waste accumulated inside the dust cup 5. In this scenario, the switching component 1 keeps the connecting ventilation duct 52 open. At this time, the suction pipe 7 and the dust cup 5 remain connected, and the suction airflow generated by base station 101 or other suction equipment can flow through the connecting ventilation duct 52 and the dust cup 5 before entering base station 101.

[0059] Since the ventilation duct 52 is unobstructed, the suction airflow can act on the inside of the dust cup 5, thereby carrying away the debris inside the dust cup 5 and transporting it to the base station 101. Thus, the switching component 1 plays a role in maintaining the unobstructed flow of the normal dust collection path during the dust collection operation of the base station 101. The dust cup 5, as the debris collection area, is discharged under the action of the suction airflow. During this process, the suction pipe 7, together with the dust cup 5, forms the initial path of the suction airflow, enabling the base station 101 to successfully complete the dust collection process of the dust cup 5.

[0060] In self-cleaning mode, this mode can be understood as the cleaning device 102 being connected to the base station 101. However, the goal of the base station 101 in cooperation with the cleaning device 102 has changed from collecting dust in the dust cup 5 to cleaning the dust-air separation component 6. In this scenario, the switching component 1 closes the connecting ventilation duct 52, cutting off or restricting the original connection path between the suction pipe 7 and the dust cup 5. The suction airflow generated by the base station 101 or other suction devices can no longer preferentially enter the dust cup 5 along the suction pipe 7 and the connecting ventilation duct 52. Instead, it flows through the dust-air separation component 6 and the dust cup 5 before entering the base station 101.

[0061] Because the switching component 1 controls the closure of the ventilation duct 52, the flow path of the suction airflow is redistributed, and the dust-air separation component 6 becomes the component through which the suction airflow passes. During the process of the suction airflow passing through the dust-air separation component 6, the particles attached to the dust-air separation component 6 are driven, loosened, or peeled off by the airflow, and finally enter the dust cup 5 and the base station 101 with the airflow, thereby achieving the cleaning of the dust-air separation component 6.

[0062] In one exemplary embodiment, please refer to Figure 3 and Figure 4 As shown, the dust-air separation assembly 6 also includes a bracket 65 disposed in the receiving cavity 51, a filter 61 and a cyclone separator 62 supported on the bracket 65, and a switching assembly 1 of the self-cleaning device 103 is movably connected to the bracket 65, and the switching assembly 1 can move along the axial direction of the dust cup 5.

[0063] The bracket 65 serves to support, position, and connect the components. On one hand, it provides a mounting base for the filter 61 and cyclone separator 62, ensuring they maintain a predetermined spatial relationship within the dust cup 5's receiving cavity 51. On the other hand, it provides a basis for the switching assembly 1 to move within the receiving cavity 51, giving it a clear direction and trajectory. The filter 61, as a pre-filter, and the cyclone separator 62, as a subsequent separation component, are both mounted on the bracket 65. This bracket allows for a relatively stable sequential arrangement, ensuring that the intake airflow passes through the appropriate treatment area within the receiving cavity 51.

[0064] Since the bracket 65 already has a stable relative position with the filter 61 and the cyclone separator 62, using the bracket 65 as the moving reference of the switching component 1 helps to maintain a stable position of the switching component 1 relative to the filter 61, the cyclone separator 62, and the connecting ventilation duct 52, avoiding the impact of accumulated assembly deviations on the accuracy of opening or closing the connecting ventilation duct 52. At the same time, the bracket 65 is usually located in a relatively central position inside the receiving cavity 51. Using the bracket 65 as the basis for the movable connection also facilitates the arrangement and guidance of the switching component 1 within a compact space, thereby improving the overall structural integration.

[0065] The switching component 1 can move along the axial direction of the dust cup 5 to open or close the connecting ventilation duct 52. The direction of movement of the switching component 1 corresponds to the extension direction of the main body of the dust cup 5. This arrangement helps to make full use of the relatively regular axial space inside the dust cup 5, allowing the switching component 1 to achieve relatively smooth linear displacement within the limited receiving cavity 51. At the same time, the axial movement method is usually easy to match with the blocking or opening action of the air duct opening. The switching component 1 can correspond to the open and closed states of the connecting ventilation duct 52 at different axial positions, thereby realizing the switching control of the airflow path.

[0066] Specifically, please refer to Figure 1 and Figure 2 As shown, the host 4 is provided with an exhaust channel 41 for the cleaning equipment 102 to exhaust air when it is working; in the self-cleaning mode, the switching component 1 moves along the axial direction of the dust cup 5 to close the ventilation duct 52 so that the suction airflow formed by the base station 101 can flow through the exhaust channel 41, filter element 63, cyclone separator 62, filter screen 61 and receiving cavity 51 before entering the base station 101.

[0067] The exhaust channel 41 is used to discharge the airflow from the main unit 4 to the external environment when the cleaning device 102 is in normal operating condition. The exhaust channel 41 provides an outlet path for gas exchange with the external environment while the main unit 4 generates negative pressure and drives the intake airflow. Normally, the exhaust channel 41 mainly serves to discharge airflow, but in self-cleaning mode, the role of the exhaust channel 41 in the entire airflow path changes, from the original exhaust end to the intake end of the suction airflow formed by the base station 101 into the cleaning device 102. That is, the exhaust channel 41 does not only serve the exhaust needs in normal operating condition, but under specific operating conditions, it can also form a reverse-extending self-cleaning airflow path together with the dust cup 5, filter 61, cyclone separator 62 and filter element 63, thereby giving the cleaning device 102 the ability to perform further internal self-cleaning after returning to the base station 101.

[0068] In self-cleaning mode, the switching component 1 moves axially along the dust cup 5, causing the connecting ventilation duct 52 to be closed. The connecting ventilation duct 52, which was originally located between the suction pipe 7 and the dust cup 5, is blocked, preventing the suction airflow generated by the base station 101 from entering the receiving cavity 51 via the connecting ventilation duct 52 along the suction pipe 7. That is, by closing the original priority path, the suction airflow generated by the base station 101 is forced to flow along another preset path, thus making the dust-air separation component 6 the necessary area for this suction airflow.

[0069] After the ventilation duct 52 is closed, the suction airflow generated by the base station 101 can flow through the exhaust channel 41, filter element 63, cyclone separator 62, filter screen 61, and the receiving cavity 51 of the dust cup 5 before entering the base station 101. The exhaust channel 41 is located at the front end of this path, and the suction airflow generated by the base station 101 first enters the cleaning device 102 through the exhaust side corresponding to the host 4. The filter element 63 is located between the exhaust channel 41 and the cyclone separator 62, so the airflow first flows through the filter element 63 after entering. Under normal working conditions, the filter element 63 is mainly used to block fine particles from migrating to the host 4 side; while under self-cleaning conditions, the filter element 63 becomes the filtering part of the suction airflow, so that the fine dust attached to the filter element 63 can be loosened and removed under the scouring action of the airflow.

[0070] The suction airflow generated by base station 101 continues to flow through cyclone separator 62 after passing through filter element 63. In normal operation, cyclone separator 62 primarily utilizes a rotating flow field to centrifugally separate particulate matter in the airflow. However, in self-cleaning mode, cyclone separator 62 becomes one of the objects to be cleaned. As the airflow passes through cyclone separator 62, it washes and carries away particulate matter adhering to the wall of cyclone separator 62, the turning area of ​​flow channel 64, or other separation areas, gradually removing the fine dust that was originally deposited or attached.

[0071] As the airflow continues to pass through the filter screen 61, dust, lint, or other particles adhering to the surface of the filter screen 61 can also be carried away by the suction effect. As a pre-filter component, the filter screen 61 is prone to dust accumulation after long-term use. However, in self-cleaning mode, incorporating the filter screen 61 into the suction airflow path formed by the base station 101 helps to improve the problem of adhering contamination on the filter screen 61, thereby maintaining the air permeability and overall filtration status of the filter screen 61.

[0072] The suction airflow generated by base station 101 enters the receiving cavity 51 after passing through filter element 63, cyclone separator 62 and filter screen 61. The receiving cavity 51 serves to receive and collect the detached particles in this process. That is to say, after the dust on the aforementioned components is detached by the airflow, it can enter the receiving cavity 51 with the airflow and then be further transported to base station 101.

[0073] In one exemplary embodiment, please refer to Figures 3 to 5 As shown, the switching component 1 includes a cover 11 that is movable relative to the connecting ventilation duct 52, and the movable cover 11 can open or close the connecting ventilation duct 52.

[0074] The cover 11 is movable relative to the connecting ventilation duct 52, meaning there is a positional change relationship between the cover 11 and the connecting ventilation duct 52. This positional change relationship corresponds to the cover 11 opening up or blocking the connecting ventilation duct 52. When the cover 11 moves to a position that avoids the connecting ventilation duct 52, the connecting ventilation duct 52 is in an open state. At this time, the dust suction pipe 7 and the dust cup 5 can remain connected through the connecting ventilation duct 52, and the airflow can pass along this path. When the cover 11 moves to a position corresponding to the connecting ventilation duct 52, the cover 11 blocks or closes the connecting ventilation duct 52, and the connecting ventilation duct 52 is in a closed state. The airflow passage that originally passed through this location is therefore blocked or restricted.

[0075] The connecting ventilation duct 52 itself is an existing airflow passage between the suction pipe 7 and the dust cup 5. By controlling the opening and closing of this passage, it can be determined whether the airflow can pass through along the normal path. Therefore, placing the cover 11 at this position can effectively control the overall airflow path with minimal structural modifications. In addition, as a planar or plate-shaped shielding component, the cover 11 can easily establish a correspondence with the contour range of the air duct opening, thereby minimizing interference with airflow when open and effectively covering or blocking the connecting ventilation duct 52 when closed.

[0076] In one exemplary embodiment, please refer to Figures 3 to 5 As shown, the self-cleaning device 103 includes a drive assembly 2 for driving the cover plate 11. The drive assembly 2 includes a drive member 21 and a transmission member 22, and the transmission member 22 connects the drive member 21 and the cover plate 11.

[0077] The cover plate 11 can form a controlled motion structure with the help of the drive assembly 2. The drive member 21, the transmission member 22 and the cover plate 11 are in a cooperative relationship along the power output direction. The drive member 21 is the power generating part, which is used to output the driving force required to drive the cover plate 11 to move; the transmission member 22 plays the role of connection, force transmission and motion conversion; the cover plate 11 is the final actuating part, which moves relative to the connecting ventilation duct 52 after receiving the force transmitted by the transmission member 22, so as to realize the opening or closing of the connecting ventilation duct 52.

[0078] The driving component 21 mainly provides the driving source, and its function is to overcome the frictional resistance, fitting resistance or other constraints that the cover plate 11 may encounter during the movement, so that the cover plate 11 can complete the position switching at a predetermined time. The transmission component 22 further transmits the power output by the driving component 21 to the cover plate 11, and according to the installation method and movement requirements of the cover plate 11, makes the driving force act on the cover plate 11 in a suitable form.

[0079] This configuration means that the installation position and output form of the drive component 21 are not necessarily consistent with the specific movement path of the cover plate 11. If the drive component 21 acts directly on the cover plate 11, it is easily limited by factors such as layout space, installation direction and mismatch of movement form. By setting the transmission component 22 between the two, a more flexible connection relationship can be established between the drive component 21 and the cover plate 11, so as to facilitate the rational organization of the power path according to the overall layout of the machine.

[0080] Specifically, please refer to Figures 3 to 5 As shown, the drive unit 21 includes a motor 211 and a reduction gear set 212. The output shaft of the motor 211 is connected to the input gear 213 of the reduction gear set 212, and the transmission unit 22 is connected to the output gear 214 of the reduction gear set 212.

[0081] The motor 211 serves as the power source in the drive unit 21, outputting initial torque and rotational motion. Its output shaft acts as the power transmission component, connecting to the input gear 213 of the reduction gear set 212, allowing the rotational driving force generated by the motor 211 to be input to the reduction gear set 212. The front end of the reduction gear set 212 establishes a power connection with the output shaft of the motor 211 via the input gear 213, while its rear end establishes a transmission connection with the transmission unit 22 via the output gear 214.

[0082] The motor 211 is generally suitable for outputting continuous rotary motion, but the speed directly output by the motor 211 is relatively high. The cover plate 11 and its related components require a more stable, controlled motion with a certain driving force during actual operation. If the output of the motor 211 is directly transmitted to the subsequent transmission component 22, it is easy to cause the action to be too fast, the force to be unstable, or the control precision to be insufficient.

[0083] By setting a reduction gear set 212 between the motor 211 and the transmission component 22, the speed and torque output by the motor 211 can be redistributed using the gear transmission relationship, making the power transmitted to the transmission component 22 more suitable for the subsequent action execution requirements. In other words, the reduction gear set 212 not only undertakes the power transmission function, but also the power regulation function, making the output characteristics of the entire driving process more in line with the requirements of action stability and driving force when the cover 11 opens or closes the ventilation duct 52.

[0084] Specifically, please refer to Figures 3 to 5 As shown, the transmission component 22 includes a transmission gear 221 and a screw 222. The transmission gear 221 meshes with the output gear 214. The transmission gear 221 is provided with a screw hole that is adapted to the screw 222. The screw 222 is screwed into the screw hole and connected to the cover plate 11.

[0085] The output gear 214 is located on the power output side of the reduction gear set 212. The transmission gear 221 meshes with the output gear 214, allowing the torque output by the reduction gear set 212 to be further transmitted to the transmission gear 221. After receiving the torque, the transmission gear 221 rotates. The screw 222 and the transmission gear 221 establish a kinematic connection through the threaded engagement between the screw hole and the screw 222. Therefore, the rotation of the transmission gear 221 can be further converted into the displacement of the screw 222 along its own axial direction. The screw 222 is also connected to the cover plate 11, so the linear motion of the screw 222 can directly drive the cover plate 11 to move, allowing the cover plate 11 to switch between predetermined positions, ultimately realizing the opening or closing of the ventilation duct 52.

[0086] The cover plate 11 corresponds to the opening and closing action of the ventilation duct 52. Its motion requirement is usually a relatively stable displacement along a predetermined direction, while the power output by the motor 211 and the reduction gear set 212 is essentially a rotational motion. If the cover plate 11 is directly driven by a rotating component, it is often difficult to match the motion mode of the cover plate 11. Therefore, a combination structure of transmission gear 221 and screw 222 is introduced into the transmission component 22, which can convert the rotational output that is easier to obtain in the front stage into a linear motion that is more suitable for controlling the opening and closing of the cover plate 11 in the rear stage.

[0087] The transmission gear 221 meshes with the output gear 214, which facilitates power transmission in a limited space. It also helps to coordinate the speed and force state of subsequent actions according to the gear transmission relationship. The transmission gear 221 is provided with a screw hole that matches the screw 222, which further enables the transmission gear 221 to both transmit torque and trigger the screw drive, thereby reducing intermediate conversion links and making the entire transmission path more compact.

[0088] When the transmission gear 221 rotates, the screw 222 moves axially under the side effect of the thread, and the cover plate 11 moves synchronously with the screw 222. Therefore, the displacement direction and amount of the cover plate 11 can correspond to the rotation state of the transmission gear 221. Compared with simple lever-type push or flexible part traction, the threaded engagement between the screw 222 and the screw hole is more conducive to ensuring the smoothness of the cover plate 11's movement and the accuracy of position control. This allows the cover plate 11 to more accurately complete the blocking or opening action when approaching the connecting ventilation duct 52, thereby improving the reliability of the switching between the open and closed states of the connecting ventilation duct 52.

[0089] In one exemplary embodiment, please refer to Figures 2 to 5 As shown, the self-cleaning device 103 also includes a dust scraping assembly 3 connected to the screw 222. The dust scraping assembly 3 includes a connecting ring 31 and a scraper 32 disposed on the connecting ring 31. The connecting ring 31 is connected to the screw 222 and can move with the screw 222 to drive the scraper 32 to scrape the filter screen 61 of the dust-air separation assembly 6.

[0090] The dust scraping assembly 3 is integrated into the motion system driven by the screw 222. This allows the screw 222 to not only drive the cover plate 11 but also to synchronously drive the dust scraping assembly 3. This, combined with the control of the ventilation duct 52 by the switching assembly 1, mechanically cleans the filter 61 of the dust-air separation assembly 6. In other words, the self-cleaning device 103 does not merely achieve internal cleaning through airflow path switching; it further combines the dust scraping assembly 3 with mechanical cleaning of the filter 61. This results in a self-cleaning process that integrates both airflow cleaning and mechanical cleaning, thereby improving the overall cleaning effect on the dust-air separation assembly 6.

[0091] The connecting ring 31 can obtain stable displacement drive from the screw 222 and synchronously generate corresponding displacement when the screw 222 moves in a predetermined direction. Since the screw 222 itself has formed a relatively clear axial motion path through the pre-stage transmission structure, setting the connecting ring 31 to be connected to the screw 222 facilitates the movement of the connecting ring 31 in the same direction as the screw 222, thereby providing a stable motion basis for the scraping action of the scraper 32 relative to the filter screen 61. Structurally, the connecting ring 31 plays the role of receiving and transmitting. On the one hand, it establishes a connection with the screw 222 to receive the driving force transmitted from the screw 222; on the other hand, it serves as the mounting base for the scraper 32, further transmitting the displacement of the screw 222 to the scraper 32.

[0092] The filter screen 61 typically has a certain contour range and force requirements. If a single component is directly driven by the screw 222 to act on the filter screen 61, it is easy to cause the action position to be limited or the force to be uneven. By using the connecting ring 31 to support the scraper 32, the scraper 32 can form a more suitable spatial arrangement around the area where the filter screen 61 is located. This allows the scraper 32 to approach or contact the surface of the filter screen 61 in a predetermined posture and along a predetermined path as it moves with the connecting ring 31, which is more conducive to achieving stable scraping. The connecting ring 31 itself can also limit, support, and hold the scraper 32 in position, making it less likely for the scraper 32 to wobble significantly during movement, thereby ensuring the reliability of the scraping action.

[0093] During long-term use, filter screen 61 tends to accumulate a large amount of particulate matter, especially some dust with strong adhesion or that is not easily removed by airflow alone, which often remains on the surface or in the pore area of ​​filter screen 61. By using scraper blades 32 to scrape filter screen 61, the attached layer on filter screen 61 can be acted upon, causing the accumulated particles to loosen or detach, thereby improving the dust accumulation on the surface of filter screen 61. Compared with cleaning methods that rely solely on suction airflow to rinse, scraper blades 32 directly contact filter screen 61 and perform mechanical scraping, which is more effective in removing firmly attached dust, thus further enhancing the cleaning ability of self-cleaning device 103 on filter screen 61.

[0094] Specifically, please refer to Figures 3 to 5 As shown, the cover plate 11 is connected to the connecting ring 31 and can move with the connecting ring 31, so that when the connecting ring 31 is driven by the screw 222 and undergoes displacement, it can synchronously drive the cover plate 11 to move in a predetermined direction. In the whole structure, the connecting ring 31 not only undertakes the installation and force transmission of the scraping assembly 3, but also further becomes the bearing foundation of the cover plate 11, so that a mechanical linkage relationship is established between the cover plate 11 and the scraping assembly 3.

[0095] The screw 222, acting as a pre-stage displacement output component, transmits axial movement to the connecting ring 31. As the connecting ring 31 moves synchronously with the screw 222, it further transmits this displacement to the cover plate 11, causing a positional change in the cover plate 11 relative to the ventilation duct 52. The advantage of this design is that it eliminates the need for a separate moving base or additional linkage components for the cover plate 11, allowing it to complete its movement via the connecting ring 31. This reduces intermediate transmission links and simplifies the overall structural relationship. Furthermore, since the connecting ring 31 already engages with the scraper blade 32, connecting the cover plate 11 to the connecting ring 31 allows the cover plate 11 and the scraper blade 32 to share the same motion base. This ensures a high degree of consistency in time and path between the duct switching action and the filter screen 61 scraping action, facilitating coordinated operation during the self-cleaning process.

[0096] This design, on the one hand, fully utilizes the stable guiding and displacement capabilities of the connecting ring 31, ensuring a reliable motion reference for the cover plate 11 during movement and preventing potential swaying, jamming, or inaccurate positioning when the cover plate 11 moves alone; on the other hand, it establishes a rigid or stable connection between the cover plate 11 and the connecting ring 31, guaranteeing a synchronous response from the cover plate 11 when the connecting ring 31 moves, thereby improving the accuracy of switching between the opening and closing states of the ventilation duct 52. Especially in cleaning equipment 102 with relatively limited internal space, using the connecting ring 31 to simultaneously support both the scraper 32 and the cover plate 11 helps reduce the number of parts, compress layout space, and improve the integration of internal mechanisms.

[0097] Further, please refer to Figures 3 to 5 As shown, the transmission component 22 also includes a guide rod 223 connected to the connecting ring 31. The guide rod 223 is arranged along the axial direction of the screw 222 and is used to guide the movement of the connecting ring 31.

[0098] The connecting ring 31 is connected to the screw 222 on one hand to receive the axial driving force transmitted by the screw 222, and on the other hand to the guide rod 223, thus moving in a predetermined direction under the guidance of the guide rod 223. With this configuration, the movement of the connecting ring 31 no longer relies solely on the single-point force transmission of the screw 222, but forms a composite cooperation relationship of screw 222 driving and guide rod 223 guiding, enabling the connecting ring 31 to maintain a relatively stable posture and trajectory when moving with the screw 222. The guide rod 223 is arranged along the axial direction of the screw 222, ensuring that the extension direction of the guide rod 223 is consistent with the target movement direction of the connecting ring 31. This allows the guide rod 223 to provide guiding constraints to the connecting ring 31 without changing its main movement direction, preventing the connecting ring 31 from swaying, rotating, or tilting during movement.

[0099] The guide rod 223 primarily serves a guiding function, restricting the degree of freedom of the connecting ring 31 through its connection with the connecting ring 31. The connecting ring 31 not only receives the driving force of the screw 222 but also serves as the mounting base for subsequent actuators. Since the connecting ring 31 integrates components such as the scraper 32 and the cover 11, the connecting ring 31 needs to generate displacement during movement and maintain a relatively stable spatial posture to ensure that the scraper 32 is accurately positioned relative to the filter screen 61 and that the opening or closing action of the cover 11 relative to the ventilation duct 52 is reliable.

[0100] Therefore, although relying solely on the screw 222 can provide axial movement, in actual structures, the connecting ring 31 may still tend to wobble due to force eccentricity, uneven distribution of component center of gravity, or changes in contact resistance. By adding a guide rod 223 and arranging it along the axial direction of the screw 222, auxiliary support and path limitation can be provided to the connecting ring 31 in the same direction as the drive, making the connecting ring 31 more likely to move smoothly along a predetermined straight line.

[0101] In summary, the self-cleaning device, cleaning equipment, and cleaning system provided in this disclosure, by incorporating a switching component at the ventilation duct connecting the suction pipe and dust cup of the cleaning equipment, enable the cleaning equipment to switch airflow paths under different operating conditions after docking with a base station. During base station dust collection, the ventilation duct remains open, allowing the suction airflow generated by the base station to effectively act on the dust cup, thus achieving automatic collection of debris within the dust cup. During self-cleaning, the ventilation duct is closed, and the suction airflow is guided through the dust-air separation component and the dust cup before entering the base station, thereby stripping particles adhering to the dust-air separation component. Therefore, it not only performs the conventional dust cup collection function but also automatically cleans the dust-air separation component inside the cleaning equipment, reducing the burden of manual disassembly and cleaning for users, improving the product experience, and helping to maintain the cleanliness of the dust-air separation component and the long-term performance stability of the cleaning equipment.

[0102] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0103] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A self-cleaning device for cleaning equipment, the cleaning equipment comprising a dust cup, a dust-air separation assembly, and a suction pipe, characterized in that, The self-cleaning device includes: A switching component is located at the connecting ventilation duct between the suction pipe and the dust cup, and is used to switch the open and closed states of the connecting ventilation duct. In the base station dust collection mode, the switching component keeps the connecting ventilation duct open so that the airflow can flow through at least the connecting ventilation duct and the dust cup and enter the base station; In self-cleaning mode, the switching component closes the ventilation duct so that airflow can pass through at least the dust-air separation component and the dust cup and enter the base station to remove particulate matter attached to the dust-air separation component.

2. The self-cleaning device according to claim 1, characterized in that, The switching component includes a cover that is movable relative to the connecting ventilation duct, and moving the cover can open or close the connecting ventilation duct.

3. The self-cleaning device according to claim 2, characterized in that, The self-cleaning device includes a drive assembly for driving the cover, the drive assembly including a drive member and a transmission member, the transmission member connecting the drive member and the cover.

4. The self-cleaning device according to claim 3, characterized in that, The driving component includes a motor and a reduction gear set. The output shaft of the motor is connected to the input gear of the reduction gear set, and the transmission component is connected to the output gear of the reduction gear set.

5. The self-cleaning device according to claim 4, characterized in that, The transmission component includes a transmission gear and a screw. The transmission gear meshes with the output gear. The transmission gear has a screw hole that matches the screw. The screw is screwed into the screw hole and connected to the cover plate.

6. The self-cleaning device according to claim 5, characterized in that, The self-cleaning device further includes a dust scraping assembly connected to the screw. The dust scraping assembly includes a connecting ring and a scraper blade disposed on the connecting ring. The connecting ring is connected to the screw and can move with the screw to drive the scraper blade to scrape the filter screen of the dust-air separation assembly.

7. The self-cleaning device according to claim 6, characterized in that, The cover plate is connected to the connecting ring and can move with the connecting ring.

8. The self-cleaning device according to claim 6, characterized in that, The transmission component further includes a guide rod connected to the connecting ring, the guide rod being arranged along the axial direction of the screw and used to guide the movement of the connecting ring.

9. A cleaning device, characterized in that, The device includes a main unit, a dust cup, a dust-air separation component, a suction pipe, and a self-cleaning device as described in any one of claims 1 to 8. The dust cup is capable of docking with a base station, and the main unit is used to provide negative pressure when the cleaning device is in operation to form an intake airflow passing through the suction pipe, dust cup, dust-air separation component, and main unit.

10. The cleaning equipment according to claim 9, characterized in that, The dust cup includes a receiving cavity, and the dust suction pipe is connected to the receiving cavity through a connecting ventilation duct; the dust-air separation assembly includes a filter screen, a cyclone separator, and a filter element arranged along the flow direction of the suction airflow, the filter screen and the cyclone separator are disposed in the receiving cavity, and the filter element is disposed in the flow channel between the cyclone separator and the main unit.

11. The cleaning equipment according to claim 10, characterized in that, The dust-air separation assembly further includes a support frame disposed within the receiving cavity, the filter screen and the cyclone separator being supported on the support frame, and the switching component of the self-cleaning device being movably connected to the support frame, and the switching component being movable along the axial direction of the dust cup.

12. The cleaning equipment according to claim 11, characterized in that, The main unit is provided with an exhaust channel for the cleaning equipment to exhaust air during operation; In self-cleaning mode, the switching component moves along the axial direction of the dust cup to close the ventilation duct, so that the suction airflow generated by the base station can flow through the exhaust channel, filter element, cyclone separator, filter screen and receiving cavity before entering the base station.

13. A cleaning system, characterized in that, It includes a base station and the cleaning equipment according to any one of claims 9 to 12, wherein the base station is used to dock with the cleaning equipment.

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