Dust collection device and cleaning system

Abstract

The utility model discloses a dust collecting device and a cleaning system, the dust collecting device comprises a shell and a dust collecting assembly, the shell is provided with a first cavity for accommodating a dust collecting bag, the dust collecting assembly comprises a cover body, a separating mechanism and a negative pressure mechanism, the cover body is communicated with the first cavity, the separating mechanism is installed in the cover body, the separating mechanism is provided with a separating cavity, the negative pressure mechanism is used for laying the dust collection bag and sucking a dust-air mixture in the cleaning equipment into the separation cavity, and the separation mechanism is used for performing centrifugal separation on the dust-air mixture so that separated dust can fall into the dust collection bag. The negative pressure mechanism is used for laying the dust collection bag, so that the dust collection device has an automatic bag laying function, manual operation of a user is not needed, and the use experience of the user can be improved.

Description

Technical Field

[0001] This utility model relates to the field of cleaning technology, and in particular to a dust collection device and cleaning system. Background Technology

[0002] As people's demands for quality of life continue to rise, more and more families are choosing to equip their homes with cleaning equipment such as robotic vacuum cleaners and sweeping machines. These devices can automatically perform heavy and dirty cleaning tasks, freeing up users' hands. Cleaning equipment sucks up dust, lint, and other dirt into an internal dust collection unit for storage. However, the storage capacity of the cleaning equipment itself is limited, and the dust collection unit needs to be emptied after several vacuuming sessions. To address this, base stations have emerged on the market. Base stations have a larger storage space to collect the dust stored by the cleaning equipment. However, the current process of collecting dust from cleaning equipment using base stations is rather cumbersome, and some base stations still require manual operation by the user, affecting the user experience. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a dust collection device that can automatically lay dust collection bags without manual operation by the user.

[0004] This utility model also proposes a cleaning system having the above-mentioned dust collection device.

[0005] According to a first aspect of the present invention, a dust collection device is used to collect dust and debris inside a cleaning device, the dust collection device comprising:

[0006] The housing has a first cavity for accommodating the dust collection bag; and

[0007] A dust collection assembly is installed in the housing. The dust collection assembly includes a cover, a negative pressure mechanism, and a separation mechanism. The cover communicates with the first cavity. The separation mechanism is installed in the cover and has a separation chamber. The negative pressure mechanism is used to line the dust collection bag and to draw the dust-air mixture in the cleaning equipment into the separation chamber. The separation mechanism is used to centrifuge the dust-air mixture so that the separated dust falls into the dust collection bag.

[0008] The dust collection device according to the embodiments of this utility model has at least the following beneficial effects:

[0009] The dust collection device of this application embodiment includes a dust collection component, which includes a negative pressure mechanism and a separation mechanism. The negative pressure mechanism is used to draw the dust-air mixture from the cleaning equipment into the separation chamber, and the separation mechanism separates the dust-air mixture, causing the separated dust particles to fall into the dust collection bag, thus achieving the dust collection function. Furthermore, the negative pressure mechanism is also used to line the dust collection bag, enabling the dust collection device to have an automatic bag-lining function, eliminating the need for manual operation by the user and improving the user experience. Moreover, by incorporating the negative pressure mechanism and the separation mechanism, the dust collection component of this application embodiment achieves both bag-lining and dust collection functions, meaning that two functions are realized with a single component, achieving multi-purpose functionality, simplifying the overall structure of the dust collection device, and reducing its production cost.

[0010] According to some embodiments of the present invention, the negative pressure mechanism includes a fan, and the fan has a first working mode and a second working mode;

[0011] In the first working mode, the cover is connected to the outside, and the fan is used to blow outside air toward the dust collection bag so that the dust collection bag opens; in the second working mode, the cover is connected to the cleaning equipment, and the fan is used to draw the dust-air mixture into the separation chamber and discharge the separated air outside the housing.

[0012] According to some embodiments of the present invention, the cover is provided with a fan cavity, the fan is installed in the fan cavity, the fan cavity is connected to the separation cavity, the cover is also provided with a first air passage hole and a second air passage hole, the separation cavity is used to communicate with the cleaning equipment through the first air passage hole, and the fan cavity is used to communicate with the outside through the second air passage hole;

[0013] In the first working mode, the fan blades rotate around the first direction so that outside air passes through the second air passage, the fan cavity, and the separation cavity in sequence and is blown onto the dust collection bag;

[0014] In the second operating mode, the fan blades rotate in a second direction to allow the dust-air mixture to enter the separation chamber from the first air passage and to allow the separated air to be discharged through the fan chamber and the second air passage, wherein the second direction is opposite to the first direction.

[0015] According to some embodiments of the present invention, the cover is provided with a first air passage, and the separation chamber is used to communicate with the cleaning equipment through the first air passage;

[0016] The dust collection assembly includes a baffle plate, which is movably disposed at the first air passage to block or expose the first air passage. In the first working mode, the baffle plate blocks the first air passage; in the second working mode, the baffle plate exposes the first air passage.

[0017] According to some embodiments of the present invention, the cover is provided with a first air passage, and the separation chamber is used to communicate with the cleaning equipment through the first air passage;

[0018] The baffle includes a first end and a second end. The first end is connected to the cover body, and the second end is a free end. The second end can move relative to the first end under the action of an external force. In the first working mode, the second end abuts against the limiting part; in the second working mode, the second end and the limiting part are spaced apart.

[0019] According to some embodiments of the present invention, the negative pressure mechanism includes a fan, the fan having a first working mode, in which the fan is used to draw the air between the cavity wall of the first cavity and the dust collection bag to the outside of the housing, so as to unfold the dust collection bag, and to draw the dust-air mixture in the cleaning equipment into the separation cavity, and to discharge the separated air to the outside of the housing.

[0020] According to some embodiments of the present invention, the cover is provided with a third air passage, and the separation chamber is used to communicate with the cleaning equipment through the third air passage;

[0021] The fan is located outside the cover, and the dust collection device further includes an exhaust pipe. The exhaust pipe includes a first pipe and a second pipe. The first pipe is located inside the cover and communicates with the separation chamber, and the second pipe is located outside the cover and communicates with the air inlet of the fan.

[0022] The housing is also provided with an exhaust duct, and the first cavity is connected to the second pipe through the exhaust duct.

[0023] According to some embodiments of the present invention, the separation mechanism includes an air guide tube and a centrifugal tube. One end of the air guide tube is closed, and the other end is provided with an exhaust port. The exhaust port is connected to the negative pressure mechanism. The wall of the air guide tube is provided with filter holes. The centrifugal tube is arranged along the circumference of the air guide tube and forms the separation chamber. One end of the centrifugal tube is open, and the other end is connected to the wall of the air guide tube.

[0024] According to some embodiments of the present invention, the dust collection device further includes a sealing assembly, the sealing assembly comprising:

[0025] A closing mechanism includes a fixed arm and a movable arm, with the dust collection bag passing between the fixed arm and the movable arm. The movable arm can move relative to the fixed arm to close the opening of the dust collection bag.

[0026] A sealing mechanism is used to seal the dust collection bag after the bag opening is closed.

[0027] According to some embodiments of the present invention, the fixed arm includes a first fixed arm and a second fixed arm, the extending direction of the first fixed arm intersects the extending direction of the second fixed arm, and the movable arm includes:

[0028] A first movable arm is disposed opposite to the first fixed arm, and the first movable arm is movable in a third direction to move closer to or away from the first fixed arm; and

[0029] The second movable arm is disposed opposite to the second fixed arm. The second movable arm can move along a fourth direction to approach or move away from the second fixed arm. The fourth direction intersects with the third direction.

[0030] According to some embodiments of the present invention, the sealing mechanism includes a heater. When the closing mechanism pulls the opening of the dust collection bag to fit against the heater, the heater heats up to perform heat-sealing on the dust collection bag.

[0031] According to some embodiments of the present invention, the dust collection device further includes a detector disposed in the first cavity. The detector is used to detect the amount of dust stored in the dust collection bag. The sealing component is configured to seal the dust collection bag when the detector detects that the amount of dust stored in the dust collection bag has reached a preset capacity.

[0032] The cleaning system according to a second aspect of the present invention includes cleaning equipment and a dust collection device as described in any of the above embodiments.

[0033] The cleaning system according to the embodiments of this utility model has at least the following beneficial effects:

[0034] The dust collection device according to the first embodiment includes a dust collection component comprising a negative pressure mechanism and a separation mechanism. The negative pressure mechanism draws the dust-air mixture from the cleaning equipment into the separation chamber, and the separation mechanism separates the dust-air mixture, causing the separated dust particles to fall into the dust collection bag, thus achieving the dust collection function. Furthermore, the negative pressure mechanism also lays the dust collection bag, enabling the dust collection device to have an automatic bag-laying function, eliminating the need for manual operation and improving the user experience. Moreover, by incorporating both the negative pressure mechanism and the separation mechanism, the dust collection component of this embodiment achieves both bag-laying and dust collection functions, realizing multiple uses with a single component, simplifying the overall structure of the dust collection device, and reducing its production cost.

[0035] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0037] Figure 1 This is a schematic diagram of the dust collection device according to the first embodiment of the present invention;

[0038] Figure 2 This is a schematic diagram of the dust collection device according to the second embodiment of the present invention;

[0039] Figure 3 This is a cross-sectional schematic diagram of the dust collection component according to the first embodiment of the present invention;

[0040] Figure 4 A schematic diagram of the first state of the dust collection device with bag laying according to the first embodiment of this utility model;

[0041] Figure 5 A schematic diagram of the second state of the dust collection device with bag laying according to the first embodiment of this utility model;

[0042] Figure 6 This is a schematic diagram of the third state of the dust collection device bag laying in the first embodiment of the present invention.

[0043] Figure 7 This is a schematic diagram of the dust collection device of the first embodiment of the present invention collecting dust and debris;

[0044] Figure 8 This is a schematic diagram showing the state of the baffle blocking the first air passage in the first embodiment of this utility model;

[0045] Figure 9 This is a schematic diagram showing the state of the baffle exposing the first air passage in the first embodiment of this utility model;

[0046] Figure 10 This is a schematic diagram of the closing mechanism according to an embodiment of the present utility model;

[0047] Figure 11 This is a schematic diagram of the closing mechanism from another perspective of an embodiment of the present utility model;

[0048] Figure 12 This is a schematic diagram illustrating the process of sealing the dust collection bag using the sealing assembly in an embodiment of the present invention;

[0049] Figure 13 This is a schematic diagram of the assembly of the dust collection device and cleaning equipment according to an embodiment of the present utility model.

[0050] Icon labels:

[0051] Dust collection device 10; housing 100; first cavity 100a; exhaust duct 100b; first partition 110; fourth air passage 111;

[0052] Sealing assembly 200; closing mechanism 210; fixing arm 211; first fixing arm 2111; second fixing arm 2112;

[0053] Movable arm 212; First movable arm 2121; Through slot 2121a; Second movable arm 2122;

[0054] Drive component 213; Transmission component 214; First transmission belt 2141; Second transmission belt 2142;

[0055] Sealing mechanism 220; heater 221;

[0056] Dust collection assembly 300; cover 310; first air passage 310a; second air passage 310b; dust collection hole 310c; fan cavity 310d; third air passage 310e; second partition 311; fifth air passage 3111; limiting part 312;

[0057] Negative pressure mechanism 320; Fan 321;

[0058] Separation mechanism 330; separation chamber 330a; centrifuge cylinder 331; air guide duct 332; exhaust port 3321; filter hole 3322; air guide plate 333;

[0059] Baffle 340; First end 341; Second end 342;

[0060] Detector 400; Storage bag box 500; Mounting base 600; Receiving slot 610; Drainage tube 700;

[0061] Exhaust duct 800; First duct 810; Second duct 820;

[0062] Cleaning equipment 20; dust cup 21; dust collection bag 30. Detailed Implementation

[0063] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0064] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model 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 utility model.

[0065] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0066] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0067] This application provides a dust collection device. Specifically, the dust collection device provided by this application is applied to cleaning equipment, which can be electrical appliances such as vacuum cleaners and robotic vacuum cleaners. Generally, cleaning equipment has limited storage capacity and requires periodic disposal of the stored dust. By configuring a dust collection device adapted to the cleaning equipment, the dust collection device automatically collects the stored dust, eliminating the need for user intervention and providing convenience. The following will describe in detail the application of the dust collection device to collecting dust from a vacuum cleaner as an example.

[0068] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the dust collection device according to the first embodiment of the present invention. Figure 2 This is a schematic diagram of the structure of a dust collection device according to a second embodiment of the present invention. In this embodiment, the dust collection device 10 includes a housing 100 and a dust collection assembly 300.

[0069] The housing 100 is used to form the outer contour of the main body of the dust collection device 10 so as to accommodate the electronic devices and functional components of the dust collection device 10. At the same time, the housing 100 is also used as the main mounting carrier of the dust collection device 10, which can provide positioning, support and connection for the electronic devices and functional components inside the dust collection device 10.

[0070] To collect dust transferred from the cleaning equipment, the housing 100 is provided with a first cavity 100a, which is used to accommodate a dust collection bag 30 (also referred to as a garbage bag). The dust collection device 10 stores the collected dust in the first cavity 100a through the dust collection bag 30. The dust collection bag 30 is configured as a disposable consumable. When it is full of dust, it can be directly removed and discarded without cleaning, thus improving the user experience. The dust collection bag 30 can be made of biodegradable materials such as polyethylene.

[0071] To facilitate the user in removing the dust bag 30, the dust collection device 10 may also include a door (not shown), and the housing 100 is provided with an opening (not shown) that communicates with the first cavity 100a. The door is movably connected to the housing 100 for closing or exposing the opening.

[0072] Dust collection component 300 is the core component of dust collection device 10. Please refer to the reference. Figure 1 and Figure 2 The dust collection assembly 300 includes a cover 310, a negative pressure mechanism 320, and a separation mechanism 330.

[0073] The cover 310 is installed on the housing 100 and is connected to the first cavity 100a. The cover 310 can be installed inside the housing 100 or outside the housing 100 (in which case the cover 310 forms part of the outer contour of the dust collection device 10). The accompanying drawings of this embodiment are only for illustrative purposes and should not be regarded as a limitation of this application.

[0074] The separation mechanism 330 is disposed within the cover 310, and the separation mechanism 330 has a separation chamber 330a. The negative pressure mechanism 320 is used to lay the dust collection bag 30 and to draw the dust-air mixture from the cleaning equipment into the separation chamber 330a. The separation mechanism 330 is used to centrifugally separate the dust-air mixture so that the separated dust particles fall into the dust collection bag 30. It should be noted that laying the bag (also known as bag covering) refers to the action of spreading the dust collection bag 30, so that the bag body of the dust collection bag 30 opens to form a sufficiently large receiving space to effectively collect dust particles.

[0075] Specifically, the negative pressure mechanism 320 can perform the dust collection bag 30 laying operation in the following two ways: one way is to continuously blow air into the dust collection bag 30, causing the dust collection bag 30 to expand as the air inside the dust collection bag 30 increases. The other way is to evacuate air from the first cavity 100a, causing the dust collection bag 30 to unfold under the action of negative pressure as the air between the cavity wall of the first cavity 100a and the dust collection bag 30 decreases.

[0076] It's easy to understand that the dust-air mixture refers to the mixture of dust and air within the cleaning equipment. When the negative pressure mechanism 320 draws dust from the cleaning equipment into the separation chamber 330a, air from the cleaning equipment is also drawn into the separation chamber 330a. If both air and dust enter the dust collection bag 30, the airflow will stir up the dust originally stored in the dust collection bag 30, and under the influence of the airflow, the dust will diffuse and adhere to the entire separation chamber 330a, affecting the dust collection effect. By setting up the separation mechanism 330, the separation mechanism 330 is used to separate the dust and air entering the separation chamber 330a, preventing air from entering the dust collection bag 30.

[0077] The separation mechanism 330 uses centrifugal separation technology to separate the dust-air mixture, instead of simply setting up a filter structure to filter the dust. This improves the separation effect of dust and avoids the situation where dust is discharged with the separated air and causes pollution, effectively ensuring the dust collection effect of the dust collection device 10.

[0078] The dust collection device 10 of this application embodiment includes a dust collection component 300, which includes a negative pressure mechanism 320 and a separation mechanism 330. The negative pressure mechanism 320 is used to draw the dust-air mixture in the cleaning equipment into the separation chamber 330a, and the separation mechanism 330 separates the dust-air mixture, causing the separated dust particles to fall into the dust collection bag 30, thus realizing the dust collection function. Furthermore, the negative pressure mechanism 320 is also used to line the dust collection bag 30, enabling the dust collection device 10 to have an automatic bag-lining function, eliminating the need for manual operation by the user and improving the user experience. Moreover, by setting up the negative pressure mechanism 320 and the separation mechanism 330, the dust collection component 300 of this application embodiment enables the dust collection device 10 to achieve both bag-lining and dust collection functions, that is, using only one component to achieve two functions, realizing multiple uses in one device, simplifying the overall structure of the dust collection device 10, and reducing the production cost of the dust collection device 10.

[0079] The dust collection device 10 of the first embodiment will now be described.

[0080] Please combine Figure 1 And refer to Figure 3 , Figure 3This is a cross-sectional schematic diagram of the dust collection assembly according to the first embodiment of the present invention. The negative pressure mechanism 320 includes a fan 321, which has a first working mode and a second working mode. In the first working mode, the cover 310 is connected to the outside, and the fan 321 is used to blow outside air toward the dust collection bag 30 to open the dust collection bag 30. In the second working mode, the cover 310 is connected to the cleaning equipment, and the fan 321 is used to draw the dust-air mixture in the cleaning equipment 20 into the separation chamber 330a, and to discharge the air separated by the separation mechanism 330 out of the housing. That is to say, in the first working mode, the dust collection device 10 performs bag laying operation through the fan 321, and in the second working mode, the dust collection device 10 performs dust suction operation through the fan 321, that is, the bag laying operation and the dust suction operation are performed step by step and independently.

[0081] In this embodiment, when the dust collection device 10 collects dust and debris from the cleaning equipment, the fan 321 first executes the first working mode to open the dust collection bag 30 to a sufficient extent. After the first working mode ends, the second working mode is executed to suck the dust and debris from the cleaning equipment into the dust collection bag 30. The bag laying operation and the dust suction operation are carried out independently, which can avoid the situation where the dust collection bag 30 is not opened in time, causing some dust and debris to be retained and accumulated in the separation chamber 330a.

[0082] In one embodiment, such as Figure 3 As shown, the cover 310 is provided with a fan chamber 310d, and a fan 321 is installed inside the fan chamber 310d. The fan chamber 310d is connected to the separation chamber 330a. The cover 310 is also provided with a first air passage 310a, a second air passage 310b, and a dust collection hole 310c. The separation chamber 330a is connected to the cleaning equipment through the first air passage 310a, and the separation chamber 330a is connected to the dust collection bag 30 through the dust collection hole 310c. The fan chamber 310d is connected to the outside through the second air passage 310b.

[0083] Please refer to Figures 4 to 6 , Figures 4 to 6 This diagram illustrates three states of the dust collection device's bag-laying process according to the first embodiment of this utility model. When the fan 321 is in the first working mode, the fan blades rotate in a first direction. At this time, the fan 321 blows air inward, allowing outside air to enter through the second air passage 310b and sequentially pass through the fan chamber 310d, separation chamber 330a, and dust collection hole 310c before being blown onto the dust collection bag 30. As air continues to blow onto the dust collection bag 30, the airflow exerts a downward pushing effect on the dust collection bag 30, gradually expanding it. Under the action of the airflow, the dust collection bag 30 deforms from its initial flat state into a concave shape. As more and more air is blown into the dust collection bag 30, it moves deeper into the first cavity 100a, causing the dust collection bag 30 to move close to the bottom of the first cavity 100a and fully open, thereby achieving the automatic bag-laying function.

[0084] Please refer to Figure 7 , Figure 7 This is a schematic diagram of the dust collection device in the first embodiment of the present invention. When the fan 321 is in the second working mode, the fan blades of the fan 321 rotate around a second direction, which is opposite to the first direction. At this time, the fan 321 blows air outward, and the fan 321 draws the dust-air mixture in the cleaning equipment into the separation chamber 330a through the first air passage 310a. Through the separation mechanism 330, the dust-air mixture is separated, and the separated dust falls into the dust collection bag 30 through the dust drop hole 310c. The separated air is discharged through the fan chamber 310d and the second air passage 310b under the suction force of the fan 321.

[0085] For ease of explanation, the rotation of the fan blades of fan 321 in the first direction is defined as forward rotation of fan 321, and the rotation of the fan blades in the second direction is defined as reverse rotation of fan 321. When the dust collection device 10 is performing bag laying operations, fan 321 rotates forward, allowing outside air to enter the separation chamber 330a through the second air passage 310b and fan chamber 310d. When the dust collection device 10 is performing dust suction operations, fan 321 rotates in reverse, allowing the air separated by the separation mechanism 330 in the separation chamber 330a to be discharged through the fan chamber 310d and second air passage 310b. Thus, this embodiment achieves both bag laying and dust suction operations by controlling the rotation direction of the fan blades of fan 321, realizing both functions of the dust collection device 10 with only one fan 321, simplifying the structure of the dust collection device 10 and reducing its production cost.

[0086] Furthermore, by setting the fan 321 to rotate in both directions, this embodiment allows the two working modes of bag laying and dust collection to share the second air passage 310b for air intake or exhaust respectively, and the two working modes share a portion of the air path: separation chamber 330a - fan chamber 310d - second air passage 310b. Therefore, it is not necessary to set more air passages for the dust collection device 10, and the air path design of the dust collection device 10 is simplified, further simplifying the overall structure of the dust collection device 10.

[0087] When laying the dust collection bag 30, the first air passage 310a must be closed to prevent dust and debris from the cleaning equipment from entering the separation chamber 330a and to prevent air from being blown into the cleaning equipment. In one embodiment, please refer to... Figure 3 The dust collection assembly 300 includes a baffle 340, which is movably disposed at the first air passage 310a to block or expose the first air passage 310a. The baffle 340 may be rotatably disposed at the first air passage 310a or slidably disposed at the first air passage 310a, and the embodiments of this application do not limit this.

[0088] Please combine Figure 3 And refer to Figure 8 and Figure 9 , Figure 8 This is a schematic diagram showing the state of the baffle blocking the first air passage in an embodiment of this utility model. Figure 9 This is a schematic diagram showing the state of the baffle exposing the first air passage in an embodiment of the present invention. Specifically, in the first working mode, as... Figure 8 As shown, the baffle 340 blocks the first air passage 310a, isolating the separation chamber 330a from the cleaning equipment and preventing communication between them. This ensures that when the fan 321 blows outside air into the separation chamber 330a, the air will not enter the cleaning equipment through the first air passage 310a, preventing the dust stored inside the cleaning equipment from being disturbed by the air. At this time, the air can only be blown towards the dust collection bag 30 through the dust collection hole 310c, causing the dust collection bag 30 to open under the airflow, thus achieving the bag-laying function. In the second working mode, as... Figure 9 As shown, the baffle 340 exposes the first air passage 310a. At this time, the separation chamber 330a is connected to the inside of the cleaning equipment, so that the fan 321 can draw the dust and air inside the cleaning equipment into the separation chamber 330a through the first air passage 310a, and collect the dust through the separation action of the separation mechanism 330.

[0089] Please refer to Figure 8 The baffle 340 includes a first end 341 and a second end 342, which can be two ends that are opposite to each other along the length or width of the baffle 340. The first end 341 is connected to the cover 310, and the second end 342 is a free end that can move relative to the first end 341 under the action of an external force.

[0090] The baffle 340 can be made of elastic materials such as rubber. Specifically, when the baffle 340 is subjected to wind force, the second end 342 moves relative to the first end 341 in the direction of airflow, causing the baffle 340 to bend and deform along the airflow direction. This causes the second end 342 to move closer to or further away from the first air passage 310a, thereby blocking or exposing the first air passage 310a. In this way, the baffle 340 can move relative to the first air passage 310a under the action of wind force to block or expose the first air passage 310a, eliminating the need for a drive structure to move the baffle 340 and simplifying the overall structure of the dust collection device 10.

[0091] In one embodiment, please continue to refer to Figure 8The cover 310 is provided with a limiting part 312, which is located on the side edge of the first air passage 310a. In the first working mode, the fan 321 blows outside air into the separation chamber 330a. The airflow direction received by the second end 342 of the baffle 340 is from the separation chamber 330a toward the cleaning equipment, so that the second end 342 is kept in contact with the limiting part 312 under the action of the wind, thereby blocking the first air passage 310a and preventing airflow from entering the cleaning equipment from the first air passage 310a. In the second working mode, the fan 321 discharges the air in the separation chamber 330a, generating a negative pressure in the separation chamber 330a. The second end 342 of the baffle 340 is pulled under the action of the negative pressure, so that the second end 342 is spaced apart from the limiting part 312, thereby exposing the first air passage 310a. At this time, the dust-air mixture in the cleaning device is sucked into the separation chamber 330a. The airflow direction of the second end 342 is towards the separation chamber 330a from the self-cleaning device, so that the second end 342 is kept spaced apart from the limiting part 312 under the action of the wind.

[0092] The dust collection device 10 of the second embodiment will now be described.

[0093] Please refer to Figure 2 The negative pressure mechanism 320 includes a fan 321. The fan 321 has a first working mode. In the first working mode, the fan 321 is used to draw the air between the cavity wall of the first cavity 100a and the dust collection bag 30 to the outside of the housing 100, so that the dust collection bag 30 unfolds under negative pressure. It is also used to draw the dust-air mixture in the cleaning equipment into the separation chamber 330a, and to discharge the air separated by the separation mechanism 330 to the outside of the housing. That is to say, when the fan 321 is in the first working mode, it not only performs the bag laying operation on the dust collection bag 30, but also performs the dust suction operation. In this embodiment, the bag laying operation and the dust suction operation are performed simultaneously.

[0094] In this embodiment, the bag-laying and vacuuming operations of the dust collection device 10 are performed simultaneously, eliminating the need to switch the operating modes of the fan 321. This improves dust collection efficiency, enabling the dust collection device 10 to quickly collect dust and debris from the cleaning equipment, thus enhancing the user experience. Furthermore, because the bag-laying and vacuuming operations are performed in the same operating mode, there is no need to change the rotation direction of the fan 321's blades, simplifying the control program of the dust collection device 10 and making its operation more reliable.

[0095] Please continue to refer to this. Figure 2The cover 310 is provided with a third air passage 310e, and the separation chamber 330a is used to communicate with the cleaning equipment through the third air passage 310e. The fan 321 is located outside the cover 310. The dust collection device 10 also includes an exhaust pipe 800, which passes through the cover 310. The exhaust pipe 800 includes a first pipe 810 and a second pipe 820 that are connected to each other. The first pipe 810 is located inside the cover 310 and communicates with the separation chamber 330a. The second pipe 820 is located outside the cover 310 and communicates with the air inlet of the fan 321.

[0096] Specifically, when the fan 321 is running in the first working mode, it generates suction force, which draws the dust and debris in the cleaning equipment into the separation chamber 330a through the third air passage 310e. After centrifugal separation by the separation mechanism 330, the separated air enters the exhaust pipe 800 under the suction force of the fan 321 and is discharged from the air outlet of the fan 321.

[0097] The housing 100 is also provided with an exhaust duct 100b, and the first cavity 100a is connected to the second pipe 820 through the exhaust duct 100b.

[0098] In one embodiment, such as Figure 2 As shown, a first partition 110 can be provided inside the housing 100. The first partition 110 divides the bottom space inside the housing 100 into a first cavity 100a and an exhaust duct 100b. The first partition 110 is provided with a fourth air passage 111, and the exhaust duct 100b is connected to the first cavity 100a through the fourth air passage 111. When the fan 321 is running, it generates suction force, causing the air between the cavity wall of the first cavity 100a and the dust collection bag 30 to be drawn into the exhaust duct 100b through the fourth air passage 111. After passing through the exhaust duct 100b, the air enters the second pipe 820 and is discharged from the air outlet of the fan 321. During this process, due to the negative pressure formed in the exhaust duct 100b, the dust collection bag 30 unfolds under the action of suction, gradually approaches the cavity wall of the first cavity 100a, and can adhere to the cavity wall of the first cavity 100a, thereby realizing the bag laying function.

[0099] Please refer to the reference. Figure 2 and Figure 3 The separation mechanism 330 includes an air guide tube 332 and a centrifuge tube 331. One end of the air guide tube 332 is closed, and the other end is provided with an exhaust port 3321. The exhaust port 3321 is used to communicate with the negative pressure mechanism 320. The tube wall of the air guide tube 332 is provided with filter holes 3322. The centrifuge tube 331 is arranged along the circumference of the air guide tube 332 and forms a separation chamber 330a. One end of the centrifuge tube 331 is open, and the other end is connected to the tube wall of the air guide tube 332.

[0100] Among them, for the dust collection device 10 of the first embodiment, such as Figure 3As shown, the cover 310 is provided with a second partition 311, which divides the cover 310 into two chambers. The separation mechanism 330 is installed in one chamber, and the negative pressure mechanism 320 is installed in the other chamber. The second partition 311 is provided with a fifth air passage 3111. The exhaust port 3321 of the air duct 332 is connected to the negative pressure mechanism 320 (i.e., the fan 321) through the fifth air passage 3111.

[0101] For the dust collection device 10 of the second embodiment, as Figure 2 As shown, one end of the air guide duct 332 with an exhaust port 3321 is connected to the first pipe 810 of the exhaust pipe 800, so that the exhaust port 3321 is connected to the pipe opening of the first pipe 810, thereby the air guide duct 332 is indirectly connected to the negative pressure mechanism 320 through the exhaust pipe 800.

[0102] The separation process will now be described in detail using the dust collection device 10 of the first embodiment as an example. Please refer to the references below. Figure 3 and Figure 9 The centrifuge cylinder 331 has a ventilation hole (not shown) on its wall facing the first air passage 310a. When the fan 321 is in the second working mode, the baffle 340 exposes the first air passage 310a. The fan 321 draws the dust-air mixture in the cleaning equipment into the separation chamber 330a of the centrifuge cylinder 331 through the first air passage 310a and the ventilation hole. Because the airflow is blocked by the air guide duct 332, the airflow rotates and flows along the wall of the air guide duct 332. That is, the air guide duct 332 guides the airflow to centrifuge along the wall of the air guide duct 332. During the rotational motion, dust particles in the airflow are subjected to centrifugal force and rotate along the wall of the centrifuge cylinder 331. Air can be drawn into the air duct 332 through the filter holes 3322, thereby separating dust particles from air. As the fan 321 continues to run, the separated dust particles are gradually thrown out from the opening of the centrifuge cylinder 331 under the action of centrifugal force and fall into the dust collection bag 30 under the action of gravity. The separated air is drawn into the fan 321 through the exhaust port 3321 of the air duct 332 and discharged through the fan 321.

[0103] In one embodiment, the separation mechanism 330 may further include multiple air guide plates 333, which are disposed inside the air guide tube 332. The multiple air guide plates 333 are evenly arranged around the axis of the air guide tube 332. The air guide plates 333 may be arc-shaped plates, so that the air entering the air guide tube 332 still undergoes centrifugal rotation under the guidance of the air guide plates 333, and is finally sucked into the fan 321 through the exhaust port 3321. In this way, by setting multiple air guide plates 333, the centrifugal effect of the separation mechanism 330 can be improved, thereby better separating dust and air.

[0104] The centrifuge cylinder 331 can be tilted downwards. During the separation process, the dust particles rotating along the wall of the centrifuge cylinder 331 tend to move downwards, making it easier for the dust particles to be thrown out of the centrifuge cylinder 331 under the combined action of centrifugal force and gravity.

[0105] The dust collection device 10 also includes a bag storage box 500, in which dust collection bags 30 are pre-stored. The dust collection bags 30 are configured as continuous bags without breaks. The bag storage box 500 is annular, and the bottom of the bag storage box 500 has an annular slot for the dust collection bags 30 to extend out. The bag storage box 500 is located below the dust collection hole 310c. During the process of laying the dust collection bags 30, under the action of the fan 321, outside air passes through the separation chamber 330a and the dust collection hole 310c in sequence and blows onto the dust collection bags 30. Under the continuous action of the wind, the dust collection bags 30 continuously extend out of the annular slot and expand until the dust collection bags 30 almost fill the entire first chamber 100a.

[0106] When the dust bag 30 is full of dust and debris, it can be sealed using a sealing structure. In one embodiment, the dust collection device 10 further includes a sealing component 200, which is disposed in the first cavity 100a and is used to seal the dust bag 30. The sealing component 200 automatically seals and packages the dust bag 30 filled with dust and debris, eliminating the need for manual operation by the user, freeing their hands, preventing hand contamination, and improving the user experience. Furthermore, since the sealing component 200 is located within the first cavity 100a, it performs the sealing operation within the housing 100, eliminating the need to open the housing 100. Dust generated during the sealing process will not escape outside the housing 100, preventing secondary pollution to the external environment.

[0107] It is readily understood that the sealing assembly 200 needs to first close the dust bag 30 and then seal it. The sealing assembly 200 may include a closing mechanism and a sealing mechanism. In one embodiment, please refer to... Figure 10 and Figure 11 , Figure 10 This is a schematic diagram of the closing mechanism provided in an embodiment of the present utility model. Figure 11 This is a schematic diagram of the closing mechanism from another perspective of an embodiment of the present utility model. The closing mechanism 210 includes a fixed arm 211 and a movable arm 212. The dust collection bag 30 is inserted between the fixed arm 211 and the movable arm 212. The movable arm 212 can move relative to the fixed arm 211 to drive the opening of the dust collection bag 30 to close.

[0108] Please combine Figure 10 And refer to Figure 12 , Figure 12This is a schematic diagram of the sealing assembly of this utility model sealing the dust collection bag. Specifically, when closing the dust collection bag 30, the movable arm 212 is driven to move closer to the fixed arm 211, reducing the distance between the fixed arm 211 and the movable arm 212. This reduces the size of the through hole formed between the fixed arm 211 and the movable arm 212. When the through hole shrinks, the movable arm 212 causes the opening of the dust collection bag 30 to deform and close synchronously until the opening of the dust collection bag 30 is closed and fitted together, thereby realizing the closing operation of the dust collection bag 30. Then, the dust collection bag 30 is sealed. For example, the dust collection bag 30 can be sealed by heat fusion. During the sealing operation, the fixed arm 211 and the movable arm 212 need to remain stationary so that the opening of the dust collection bag 30 is kept closed. After the sealing operation is completed, the movable arm 212 is driven to move away from the fixed arm 211 so that the through hole between the fixed arm 211 and the movable arm 212 returns to its initial size so that the next dust collection bag 30 can be laid.

[0109] Understandably, the sealing component 200 needs to be positioned on the side of the bag box 500 away from the dust collection component 300, such as... Figure 2 As shown, the sealing assembly 200 is located on the lower side of the dust collection bag box 500. After the dust collection bag 30 is opened, the fixed arm 211 and the movable arm 212 are located on the outer side of the dust collection bag 30 and close to the opening of the dust collection bag 30.

[0110] The fixed arm 211 can be one or more; similarly, the movable arm 212 can be one or more.

[0111] In one embodiment, to better facilitate the closing of the dust collection bag 30 and prevent dust and debris from leaking out, please refer to [the relevant documentation / reference needed]. Figure 10 and Figure 11 The fixing arm 211 includes a first fixing arm 2111 and a second fixing arm 2112, wherein the extending directions of the first fixing arm 2111 and the extending directions of the second fixing arm 2112 intersect each other. In one embodiment, the first fixing arm 2111 and the second fixing arm 2112 may be arranged at a 90° angle to each other.

[0112] The movable arm 212 includes a first movable arm 2121 and a second movable arm 2122. The first movable arm 2121 is disposed opposite to the first fixed arm 2111, and the first movable arm 2121 can move along a third direction to approach or move away from the first fixed arm 2111. The second movable arm 2122 is disposed opposite to the second fixed arm 2112, and the second movable arm 2122 can move along a fourth direction to approach or move away from the second fixed arm 2112. The fourth direction is intersected with the third direction.

[0113] Among them, the first movable arm 2121 can be parallel to the first fixed arm 2111, and the second movable arm 2122 can be parallel to the second fixed arm 2112. When the included angle between the first fixed arm 2111 and the second fixed arm 2112 is 90°, in the initial state, the first fixed arm 2111, the first movable arm 2121, the second fixed arm 2112, and the second movable arm 2122 enclose a rectangle, so that the through hole is also rectangular (or in the shape of a "mouth"), enabling the four sides of the bag mouth of the dust collection bag 30 to be surrounded and constrained by the four arm bodies. The third direction is perpendicular to the extension direction of the first fixed arm 2111, and the fourth direction is perpendicular to the extension direction of the second fixed arm 2112. Thus, during the movement of the first movable arm 2121 and the second movable arm 2122, the distance between each part of the first movable arm 2121 and the first fixed arm 2111 decreases by the same value, and the distance between each part of the second movable arm 2122 and the second fixed arm 2112 decreases by the same value, which can better drive the dust collection bag 30 to close. Each part of the first movable arm 2121 and each part of the second movable arm 2122 exert an almost consistent restraining effect on the dust collection bag 30, preventing the dust and debris in the dust collection bag 30 from leaking out.

[0114] Since the above four arm bodies enclose a rectangle, one end of the first movable arm 2121 is close to the second fixed arm 2112. To make the first movable arm 2121 move more smoothly, one end of the first movable arm 2121 can be slidably connected to the second fixed arm 2112. In one embodiment, the second fixed arm 2112 can be designed to be columnar or rod-shaped. One end of the first movable arm 2121 is provided with a first guiding hole (not labeled), and the second fixed arm 2112 passes through the first guiding hole and is slidably matched with it. Then, the first movable arm 2121 can slide along the second fixed arm 2112 under an external force, making the second fixed arm 2112 serve as the movement guide rod of the first movable arm 2121, which can play a guiding and limiting role to guide the smooth sliding of the first movable arm 2121.

[0115] Similarly, one end of the second movable arm 2122 can also be slidably connected to the first fixed arm 2111. The first fixed arm 2111 can be designed to be columnar or rod-shaped. One end of the second movable arm 2122 is provided with a second guiding hole (not labeled), and the first fixed arm 2111 passes through the second guiding hole and is slidably matched with it.

[0116] Since the movement directions of the first movable arm 2121 and the second movable arm 2122 cross, to avoid interference between the first movable arm 2121 and the second movable arm 2122 during movement, such as Figure 10As shown, the first movable arm 2121 is provided with a through groove 2121a, which extends along the length of the first movable arm 2121. One end of the second movable arm 2122 is disposed in the through groove 2121a. When the second movable arm 2122 moves toward the second fixed arm 2112, one end of the second movable arm 2122 slides in the through groove 2121a, which will not affect the movement of the first movable arm 2121 itself. Thus, the first movable arm 2121 and the second movable arm 2122 do not need to be stacked as two-layer structures, which can reduce the height of the closing mechanism 210, reduce the space occupied by the sealing assembly 200 in the internal space of the housing 100, and thus reduce the volume of the dust collection device 10.

[0117] Of course, in another alternative embodiment, the second movable arm 2122 may be provided with a through groove, which extends along the length of the second movable arm 2122, and one end of the first movable arm 2121 may be disposed in the through groove.

[0118] To achieve automatic closing of the dust bag 30, please refer to the following instructions. Figure 10 and Figure 11 The closing mechanism 210 also includes a drive component 213 and a transmission component 214 connected to the drive component 213. The drive component 213 is a drive motor, and the transmission component 214 includes a first transmission belt 2141 and a second transmission belt 2142. The first transmission belt 2141 is driveably connected to the first movable arm 2121, and the second transmission belt 2142 is driveably connected to the second movable arm 2122. The first transmission belt 2141 and the second transmission belt 2142 are connected via a first transmission post (not shown). One end of the first transmission belt 2141 is connected to the drive motor, and the other end of the second transmission belt 2142 is fitted onto the outer peripheral wall of the first transmission post. The second transmission belt 2142 and the first transmission belt 2141 are stacked along the height direction, with one end of the second transmission belt 2142 fitted onto the first transmission post and the other end fitted onto the second transmission post (not shown).

[0119] Specifically, during the sealing operation of the dust collection bag 30 by the sealing mechanism 210, the drive motor rotates forward, driving the first transmission belt 2141 to rotate. The first transmission belt 2141 drives the first movable arm 2121 to move towards the first fixed arm 2111. Simultaneously, the first transmission belt 2141 drives the first transmission column to rotate synchronously, causing the first transmission column to drive the second transmission belt 2142 to rotate synchronously. This, in turn, causes the second transmission belt 2142 to drive the second movable arm 2122 to move towards the second fixed arm 2112. Correspondingly, after sealing and packing the dust collection bag 30, controlling the drive motor to reverse will return the first movable arm 2121 and the second movable arm 2122 to their initial positions. Further details are omitted here.

[0120] like Figure 12As shown, the sealing mechanism 220 includes a heater 221. When the movable arm 212 moves to bring the opening of the dust collection bag 30 together with the heater 221, the heater 221 heats up to perform a heat-sealing process on the dust collection bag 30. In one embodiment, the heater 221 is an electric heater, such as a thermoelectric resistor. To facilitate wiring of the heater 221, it can be mounted on the fixed arm 211.

[0121] Please refer to Figure 3 The dust collection device 10 also includes a detector 400, which is disposed within the first cavity 100a. The detector 400 is used to detect the amount of dust stored in the dust collection bag 30, so that when the amount of dust stored in the dust collection bag 30 reaches a preset capacity, the sealing assembly 200 seals the dust collection bag 30. It is understood that the preset capacity refers to the maximum storage capacity of the dust collection bag 30 set in advance. The preset capacity can be a default value stored in the control system of the dust collection device 10, or it can be modified according to the user's needs.

[0122] The detector 400 can be of various types. For example, it can determine the actual storage capacity of dust in the dust collection bag 30 by detecting the total weight of the dust collection bag 30, or it can determine the actual storage capacity of dust in the dust collection bag 30 by detecting the height of the dust.

[0123] In one embodiment, to improve the accuracy of detecting the amount of dust stored in the dust collection bag 30, the detector 400 is an infrared ranging sensor. Specifically, during the detection process, the detector 400 emits infrared light into the dust collection bag 30 and receives the reflected light signal reflected back by the dust in the dust collection bag 30. By acquiring the time of the emitted and reflected light signals, the closest distance between the detector 400 and the dust in the dust collection bag 30 can be calculated, thereby determining whether the dust in the dust collection bag 30 has reached the preset capacity.

[0124] Please refer to Figure 13 , Figure 13 This is a schematic diagram of the assembly of the dust collection device and cleaning equipment according to an embodiment of the present invention. The vacuum cleaner includes a dust cup 21, in which the dust collected by the vacuum cleaner is stored. It is understood that a dust cup bottom cover (not shown) is provided at the bottom of the dust cup 21, which can be opened to facilitate the handling of dust in the dust cup 21.

[0125] To better collect the dust stored inside the vacuum cleaner, the dust collection device 10 also includes a mounting base 600, which is fixed to the housing 100. The mounting base 600 is provided with a receiving groove 610. When collecting the dust stored inside the vacuum cleaner, at least a portion of the vacuum cleaner dust cup 21 is inserted into the receiving groove 610. Understandably, at least the portion of the dust cup 21 near the bottom cover is located within the receiving groove 610.

[0126] Therefore, by setting up the mounting base 600, which has a receiving groove 610, when collecting dust stored in the vacuum cleaner, at least a portion of the vacuum cleaner's dust cup 21 is inserted into the receiving groove 610. When the dust cup bottom cover is opened, the dust in the dust cup 21 can completely fall into the receiving groove 610, preventing dust from leaking into the indoor space and improving dust collection. Furthermore, the mounting base 600 provides support for the vacuum cleaner, offering a dedicated placement location. After each vacuuming operation, the vacuum cleaner can be placed on the mounting base 600, ensuring proper placement without affecting the cleanliness of the indoor space.

[0127] The mounting base 600 is also equipped with a drainage pipe 700. One end of the drainage pipe 700 is connected to the receiving groove 610, and the other end extends into the housing 100 and is connected to the first air passage 310a of the cover 310. The drainage pipe 700 can guide the dust falling from the dust cup 21 into the dust collection assembly 300 for separation.

[0128] This application also provides a cleaning system, including a cleaning device 20 and a dust collection device 10 based on the above embodiments. The cleaning device 20 can be a vacuum cleaner, a sweeper, or the like.

[0129] Since the cleaning system adopts all the technical solutions of the dust collection device 10 in the above embodiments, it has at least all the beneficial effects brought about by the technical solutions in the above embodiments.

[0130] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A dust collection device, characterized in that, The dust collection device is used to collect dust and debris from cleaning equipment, and includes: The housing has a first cavity for accommodating the dust collection bag; and A dust collection assembly is installed in the housing. The dust collection assembly includes a cover, a negative pressure mechanism, and a separation mechanism. The cover communicates with the first cavity. The separation mechanism is installed in the cover and has a separation chamber. The negative pressure mechanism is used to line the dust collection bag and to draw the dust-air mixture in the cleaning equipment into the separation chamber. The separation mechanism is used to centrifuge the dust-air mixture so that the separated dust falls into the dust collection bag.

2. The dust collection device according to claim 1, characterized in that, The negative pressure mechanism includes a fan, which has a first working mode and a second working mode. In the first working mode, the cover is connected to the outside, and the fan is used to blow outside air toward the dust collection bag so that the dust collection bag opens. In the second working mode, the cover is connected to the cleaning equipment, and the fan is used to draw the dust-air mixture into the separation chamber and discharge the separated air out of the housing.

3. The dust collection device according to claim 2, characterized in that, The cover is provided with a fan cavity, the fan is installed in the fan cavity, the fan cavity is connected to the separation cavity, the cover is also provided with a first air passage hole and a second air passage hole, the separation cavity is used to connect with the cleaning equipment through the first air passage hole, and the fan cavity is used to connect with the outside through the second air passage hole; In the first working mode, the fan blades rotate around the first direction so that outside air passes through the second air passage, the fan cavity, and the separation cavity in sequence and is blown onto the dust collection bag; In the second operating mode, the fan blades rotate in a second direction to allow the dust-air mixture to enter the separation chamber from the first air passage and to allow the separated air to be discharged through the fan chamber and the second air passage, wherein the second direction is opposite to the first direction.

4. The dust collection device according to claim 2, characterized in that, The cover is provided with a first air passage, and the separation chamber is used to communicate with the cleaning equipment through the first air passage; The dust collection assembly also includes a baffle, which is movably disposed at the first air passage to block or expose the first air passage. In the first working mode, the baffle covers the first air passage. In the second operating mode, the baffle exposes the first air passage.

5. The dust collection device according to claim 4, characterized in that, The cover is provided with a limiting part, which is located on the side edge of the first air passage; The baffle includes a first end and a second end. The first end is connected to the cover body, and the second end is a free end. The second end moves relative to the first end under the action of an external force. In the first working mode, the second end abuts against the limiting part; in the second working mode, the second end and the limiting part are spaced apart.

6. The dust collection device according to claim 1, characterized in that, The negative pressure mechanism includes a fan, which has a first working mode. In the first working mode, the fan is used to draw the air between the cavity wall of the first cavity and the dust collection bag to the outside of the housing so that the dust collection bag can be unfolded, and to draw the dust-air mixture in the cleaning equipment into the separation cavity and to discharge the separated air to the outside of the housing.

7. The dust collection device according to claim 6, characterized in that, The cover is provided with a third air vent, and the separation chamber is used to communicate with the cleaning equipment through the third air vent. The fan is located outside the cover, and the dust collection device further includes an exhaust pipe. The exhaust pipe includes a first pipe and a second pipe. The first pipe is located inside the cover and communicates with the separation chamber, and the second pipe is located outside the cover and communicates with the air inlet of the fan. The housing is also provided with an exhaust duct, and the first cavity is connected to the second pipe through the exhaust duct.

8. The dust collection device according to any one of claims 1 to 7, characterized in that, The separation mechanism includes an air guide tube and a centrifuge tube. One end of the air guide tube is closed, and the other end is provided with an exhaust port. The exhaust port is connected to the negative pressure mechanism. The wall of the air guide tube is provided with filter holes. The centrifuge tube is arranged along the circumference of the air guide tube and forms the separation chamber. One end of the centrifuge tube is open, and the other end is connected to the wall of the air guide tube.

9. The dust collection device according to any one of claims 1 to 7, characterized in that, The dust collection device further includes a sealing assembly, which comprises: A closing mechanism includes a fixed arm and a movable arm, with the dust collection bag passing between the fixed arm and the movable arm. The movable arm can move relative to the fixed arm to close the opening of the dust collection bag. A sealing mechanism is used to seal the dust collection bag after the bag opening is closed.

10. The dust collection device according to claim 9, characterized in that, The fixed arm includes a first fixed arm and a second fixed arm, wherein the extending direction of the first fixed arm intersects the extending direction of the second fixed arm, and the movable arm includes: A first movable arm is disposed opposite to the first fixed arm, and the first movable arm is movable in a third direction to move closer to or away from the first fixed arm; and The second movable arm is disposed opposite to the second fixed arm. The second movable arm can move along a fourth direction to approach or move away from the second fixed arm. The fourth direction intersects with the third direction.

11. The dust collection device according to claim 9, characterized in that, The sealing mechanism includes a heater, which heats up to perform heat-sealing on the dust collection bag when the closing mechanism causes the bag opening of the dust collection bag to close.

12. The dust collection device according to claim 9, characterized in that, The dust collection device further includes a detector disposed in the first cavity. The detector is used to detect the amount of dust stored in the dust collection bag. The sealing component is configured to seal the dust collection bag when the detector detects that the amount of dust stored in the dust collection bag has reached a preset capacity.

13. A cleaning system, characterized in that, Includes cleaning equipment and dust collection devices as described in any one of claims 1 to 12.

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