Suction device and cleaning apparatus

Abstract

The application relates to a suction device and a cleaning device. The suction device comprises a casing with an air inlet and an air outlet, the casing internally comprising a dust collection space; a power element; a cyclone separator, the inlet of which is communicated with the air inlet; a filter module comprising a filter, the outlet of the cyclone separator being communicated with the filter; a cleaning element with a cleaning fluid inlet; a dust discharge valve; in a cleaning mode, the cleaning fluid inlet and the dust discharge valve are in a first state, external air flow can enter through the air inlet and sequentially flow through the cyclone separator, the filter, the power element and the air outlet; in a self-cleaning mode, the cleaning fluid inlet and the dust discharge valve are in a second state, air flow from the power element and / or external air flow entering from an internal-external communication port can sequentially flow through the cleaning fluid inlet, the filter and the dust discharge valve into the dust collection space, and the direction of the air flow flowing through the filter is opposite to the filtering direction. The suction device can realize self-cleaning without dismounting the filter module, thereby reducing the labor maintenance cost.

Description

Technical Field

[0001] This application relates to the field of cleaning equipment technology, and in particular to suction devices and cleaning equipment. Background Technology

[0002] In suction devices, the filter is a core component that ensures the safe operation of the motor and improves filtration efficiency. It prevents motor damage by intercepting particulate matter in the airflow and ensures clean exhaust air. However, existing filters have long faced the problem of dust accumulation and clogging, requiring users to frequently disassemble and clean them, which is cumbersome and significantly increases labor maintenance costs. Utility Model Content

[0003] Therefore, it is necessary to provide a suction device and a cleaning equipment to achieve self-cleaning without removing the filter module, thereby reducing manual maintenance costs.

[0004] A suction device, the suction device comprising:

[0005] The housing has an air inlet and an exhaust outlet, and the interior of the housing includes a dirt collection space.

[0006] A power unit, installed inside the housing, is used to provide suction power;

[0007] A cyclone separator is installed inside the housing, and the inlet of the cyclone separator is connected to the air inlet;

[0008] A filter module is installed inside the housing, the filter module includes a filter, and the outlet of the cyclone separator is connected to the filter;

[0009] A cleaning component, installed within the housing, and having a cleaning fluid inlet; and

[0010] A dust discharge valve is installed inside the housing; the suction device has a cleaning mode and a self-cleaning mode;

[0011] In the cleaning mode, the cleaning fluid inlet and the dust discharge valve are in the first state, and the external airflow can enter through the air inlet and flow through the cyclone separator, the filter, the power component and the exhaust port in sequence, and the direction of the airflow through the filter is the filtration direction;

[0012] In the self-cleaning mode, the cleaning fluid inlet and the dust discharge valve are in the second state. The airflow from the power component and / or the external airflow entering from the internal and external connection port can flow sequentially through the cleaning fluid inlet, the filter and the dust discharge valve into the dirt collection space, and the direction of the airflow through the filter is opposite to the filtration direction.

[0013] In some embodiments, in the first state, the cleaning fluid inlet and the dust discharge valve are closed, and in the second state, the cleaning fluid inlet and the dust discharge valve are open.

[0014] Alternatively, the degree of opening of the cleaning fluid inlet and the dust discharge valve in the first state is less than the degree of opening of the cleaning fluid inlet and the dust discharge valve in the second state;

[0015] Alternatively, within a preset duration, the cleaning fluid inlet and the dust exhaust valve intermittently open and close, and within the preset duration, the total opening time of the cleaning fluid inlet and the dust exhaust valve in the first state is less than the total opening time of the cleaning fluid inlet and the dust exhaust valve in the second state.

[0016] In some embodiments, the housing includes a liner, one side of which has the dirt collection space, the cyclone separator and the dust discharge valve are mounted on the liner, and the other side of the liner has a transition channel communicating between the outlet of the cyclone separator and the filter; in the cleaning mode, the negative pressure of the transition channel is greater than the negative pressure of the dirt collection space, so as to close the dust discharge valve; in the self-cleaning mode, the negative pressure of the transition channel is less than the negative pressure of the dirt collection space, so as to open the dust discharge valve.

[0017] In some embodiments, the dust discharge valve includes a cover plate rotatably connected to the liner, the liner having a dust discharge port communicating with the transition channel and the dirt collection space; in the cleaning mode, the cover plate blocks the dust discharge port; in the self-cleaning mode, the cover plate rotates relative to the liner to separate from the dust discharge port.

[0018] In some embodiments, the liner includes a liner base plate and a liner protrusion plate connected to each other. The transition channel and the dirt collection space are respectively disposed on both sides of the liner base plate. The cyclone separator is installed on the liner base plate. The liner protrusion plate protrudes outward from the side of the liner base plate opposite to the transition channel. The liner protrusion plate surrounds a dust discharge chamber communicating with the transition channel. The dust discharge port is opened on the liner protrusion plate. The cover plate is rotatably connected to the liner protrusion plate.

[0019] In some embodiments, the cross-sectional area of ​​the dust discharge chamber gradually decreases in the direction away from the transition channel.

[0020] In some embodiments, the cyclone separator and the liner protrusions are arranged at intervals in a first direction, which is perpendicular to the height direction of the suction device.

[0021] In some embodiments, the projection of the cyclone separator along the height direction of the suction device is located in the central region of the sludge collection space.

[0022] In some embodiments, the housing includes a main frame and a base. The main frame has an inner cavity, an air inlet, and an exhaust outlet. The power unit and the filter module are mounted in the inner cavity. The base includes a receiving cavity with an opening. The liner extends into the receiving cavity through the opening and is connected to the base. The base is connected to the main frame.

[0023] In some embodiments, the receiving cavity includes the transition channel and the sludge collection space, the liner bottom plate is provided with a primary flow inlet communicating with the air inlet and the inlet of the cyclone separator, and a primary flow outlet communicating with the outlet of the cyclone separator and the transition channel, and the main frame is provided with a secondary flow inlet communicating with the transition channel and the filter.

[0024] In some embodiments, the liner includes a protective plate connected to the liner base plate, the protective plate and the cyclone separator both extending from the liner base plate toward the sludge collection space, and the protective plate surrounding the outside of the cyclone separator to form an annular separation channel between them, the primary flow inlet communicating with the separation channel, the cyclone separator having a mesh communicating with its internal cavity and the separation channel, the internal cavity communicating with the primary flow outlet.

[0025] In some embodiments, the main frame includes a surrounding panel extending toward and abutting against the liner base plate, the surrounding panel dividing the side of the receiving cavity away from the sludge collection space into the transition channel and the peripheral space, the primary flow inlet being located on the side of the peripheral space, and the primary flow outlet being located on the side of the transition channel.

[0026] In some embodiments, the projection of the secondary inlet into the height direction of the suction device and the projection of the dust discharge chamber into the height direction of the suction device at least partially overlap.

[0027] In some embodiments, the liner is attached to the base, and the base is snapped into the main frame.

[0028] In some embodiments, the cavity wall of the receiving cavity is provided with a support platform, and the liner is supported on the support platform.

[0029] In some embodiments, the housing is provided with a liquid level sensor, which includes a floating element and a sensing element. The floating element is able to float on the liquid surface. When the floating element rises to a preset position with the liquid surface, it can trigger the sensing element to generate a trigger signal.

[0030] In some embodiments, a through hole is provided on the bottom plate of the liner, and the liquid level sensor extends into the sludge collection space through the through hole.

[0031] In some embodiments, the through hole is located on the side where the peripheral space is located.

[0032] In some embodiments, one of the floating element and the sensing element is a magnetic element and the other is a magnetic sensor.

[0033] In some embodiments, the power component and the filter module are arranged at intervals along a first direction, which is perpendicular to the height direction of the suction device; the filter module is installed at an angle so that the angle between the filtration direction and the first direction is an acute angle.

[0034] In some embodiments, the plane containing the secondary inlet is set at an angle to the plane perpendicular to the height direction.

[0035] In some embodiments, the cleaning component is located between the power component and the filter module in the first direction, and the three components form a triangular space.

[0036] In some embodiments, the cleaning component, the power component, and the filter module form a right-angled triangular space, with the filter module located on the hypotenuse of the right-angled triangle.

[0037] In some embodiments, a shielding member is provided between the power component and the filter module, and the shielding member has a communication port connected to the inlet of the power component, the communication port facing the outlet end face of the filter.

[0038] In some embodiments, the housing has a mounting port on one side along the first direction, and the filter module is detachably installed in the housing through the mounting port along the first direction.

[0039] In some embodiments, the filter module includes a filter housing and a snap-fit ​​member resiliently connected to the filter housing, the filter being mounted within the filter housing, and the snap-fit ​​member being configured to be operably resiliently movable to snap onto or detach from the housing.

[0040] In some embodiments, one of the filter housing and the housing along the second direction is provided with a guide groove, and the other is provided with a guide block. When the filter module is installed on the housing along the first direction through the mounting port, the guide block slides in the guide groove. The second direction, the first direction, and the height direction of the suction device are perpendicular to each other.

[0041] In some embodiments, the housing is provided with the guide groove, and the size of the guide groove gradually decreases in the direction in which the filter module slides into the housing.

[0042] In some embodiments, the housing includes a main frame, the filter module, the power component and the cleaning component are all installed in the main frame, the main frame has a secondary flow inlet communicating with the outlet of the cyclone separator and the inlet end face of the filter, and an inlet seal is installed at the secondary flow inlet.

[0043] In some embodiments, the projected area of ​​the secondary inlet along the height direction of the suction device is less than half the projected area of ​​the inlet end face along the filtration direction, and the inlet seal extends in a plane perpendicular to the height direction.

[0044] In some embodiments, the filter module includes a filter housing, a filter, and a filter seal. The filter is installed inside the filter housing, and the filter seal is disposed between the two. The housing has a rib extending toward the outlet end face of the filter. The rib abuts against one side of the filter seal, and the other side of the filter seal is in a concave-convex fit with the filter housing.

[0045] In some embodiments, a dust discharge channel is formed between the filter housing and the inlet end face, which is inclined relative to the first direction and aligned with the secondary flow inlet.

[0046] In some embodiments, the air inlet, the power unit, and the filter module are arranged at intervals along the first direction.

[0047] In some embodiments, a valve body is movably connected to the cleaning component, the valve body being movable relative to the cleaning component to block or open the cleaning fluid inlet.

[0048] In some embodiments, the valve body is configured to move relative to the cleaning element by magnetic force.

[0049] In some embodiments, the dust discharge valve is installed on the cyclone separator, and the projections of the two in the height direction of the suction device at least partially overlap. In the self-cleaning mode, the airflow can sequentially flow through the cleaning fluid inlet, the filter, the cyclone separator, and the dust discharge valve into the dirt collection space.

[0050] A cleaning device comprising the suction device described above.

[0051] The aforementioned suction device and cleaning equipment, in self-cleaning mode, utilize airflow generated by the device's own power or introduced external airflow to perform reverse blowing (opposite to normal filtration direction), effectively removing dust accumulated on the filter surface. Simultaneously, the opening of the dust discharge valve provides a dedicated discharge channel for the blown-off dust, allowing it to fall directly into the dust collection space, thus preventing secondary adhesion of dust to the filter and ensuring cleaning effectiveness. This design achieves fully automated in-situ cleaning of the filter, eliminating the need for manual disassembly and maintenance by the user. It solves the problem of frequent cleaning caused by dust accumulation and clogging in existing technologies, significantly reducing the user's operational burden and maintenance costs, and improving the long-term operational reliability and ease of use of the equipment. Attached Figure Description

[0052] Figure 1 This is a schematic diagram of a suction device in one embodiment of this application.

[0053] Figure 2 This is an exploded view of the suction device in one embodiment of this application.

[0054] Figure 3 This is an exploded view of the suction device in one embodiment of this application from another perspective.

[0055] Figure 4 This is a schematic diagram of the base in one embodiment of this application.

[0056] Figure 5 This is a schematic diagram of a liner module in one embodiment of this application.

[0057] Figure 6 This is a cross-sectional view of the suction device in one embodiment of this application (cleaning mode, with a cyclone filter installed).

[0058] Figure 7 This is a cross-sectional view of the suction device in one embodiment of this application (self-cleaning mode, with a cyclone filter installed).

[0059] Figure 7a for Figure 7 A magnified view of a portion of the image.

[0060] Figure 8 This is a schematic diagram of a filter module in one embodiment of this application.

[0061] Figure 9 This is a schematic diagram of a filter and a filter seal in one embodiment of this application.

[0062] Figure 10 This is a schematic diagram of a filter in one embodiment of this application.

[0063] Figure 11 for Figure 6 A magnified view of a portion of the filter module.

[0064] Figure 12 This is a partial cross-sectional view (cleaning mode) of the guide channel and secondary flow inlet in one embodiment of this application.

[0065] Figure 13 This is a partial sectional view of the connection between the main frame, base and liner in one embodiment of this application.

[0066] Figure 14 This is a cross-sectional view of the suction device in another embodiment of this application (cleaning mode, with dust bag installed).

[0067] Figure 15 This is a schematic diagram of a suction device in another embodiment of this application.

[0068] Figure label:

[0069] 100. Main body; 110. Main frame; 111. Inner cavity; 112. Air inlet; 113. Exhaust outlet; 114. Annular groove; 115. Secondary flow inlet; 116. Enclosure panel; 117. Triangular space; 118. Mounting port; 119. Guide groove; 1110. Rib plate; 1120. First locking block; 1130. Storage cavity; 1140. Handle; 1150. Lock; 1160. Control panel; 120. Power component; 130. Filter module; 131. Filter; 1311. Filter section; 1312. Bracket; 13121. Support bar; 131 22. Frame; 13123. Handle; 1313. Inlet end face; 1314. Outlet end face; 132. Filter housing; 1321. Guide block; 1322. Protrusion; 1323. Second operating groove; 133. Snap-fit ​​element; 1331. Second snap-fit ​​block; 1332. First operating groove; 134. Elastic element; 135. Dust exhaust channel; 140. Air inlet pipe; 150. Cleaning element; 151. Cleaning fluid inlet; 161. Floating element; 162. Floating element housing; 170. Shielding element; 171. Connecting port; 180. Valve body; 200. Liner module; 210 211. Liner; 2112. Liner base plate; 2113. Primary flow inlet; 2114. Primary flow outlet; 2115. Slot; 2116. Through hole; 2117. Liner side plate; 2118. Flanged plate; 212. Extension; 2132. Hook-on part; 21321. Hook-on surface; 2133. Protective plate; 214. Primary flow pipe; 215. Liner protrusion; 216. Dust outlet; 2162. Dust discharge chamber; 2163. Baffle; 220. Pre-separation mechanism; 220a. Cyclone separator; 221. Mesh cover; 2211. Mesh; 2212. Internal cavity; 2213. Separation channel; 222. Cover skirt; 223. Abutment part; 220b. Dust bag; 230. Dust discharge valve; 231. Cover plate; 300. Base; 310. Receiving cavity; 311. Opening; 312. Transition channel; 313. Sludge collection space; 314. Peripheral space; 320. Base bottom plate; 330. Base side plate; 331. Locking block; 340. Support platform; 350. Flip plate; 410. Annular seal; 420. Enclosure seal; 430. Pipe seal; 440. Inlet seal; 450. Filter seal; 451. Recess. Detailed Implementation

[0070] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0071] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0072] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0073] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0074] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0075] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If 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. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0076] See Figure 1 and Figure 2 One embodiment of this application provides a suction device comprising a main body 100, a liner module 200, and a base 300. See also... Figures 1 to 3 ,as well as Figure 6 The main body 100 includes a main frame 110, a power component 120, and a filter module 130. The main frame 110 has an inner cavity 111, an air inlet 112, and an exhaust outlet 113. The power component 120 and the filter module 130 are installed in the inner cavity 111. (See reference...) Figure 2 and Figure 3 The liner module 200 includes a liner 210 and a pre-separation mechanism 220 connected thereto. (See also...) Figure 2 , Figure 3 and Figure 6 The base 300 includes a receiving cavity 310 with an opening 311. A liner module 200 extends into the receiving cavity 310 through the opening 311, and the liner 210 is connected to the base 300 (e.g., the liner 210 is hooked onto or snapped into the base 300). The base 300 is snapped into the main frame 110. See also... Figure 1 and Figure 6 The suction device has a cleaning mode. In the cleaning mode, the power unit 120 can provide suction power so that the external airflow flows sequentially through the air inlet 112, the pre-separation mechanism 220, the filter module 130, the power unit 120 and the exhaust port 113.

[0077] In the suction device described in the above embodiments, when the liner 210 is attached to the base 300, the pre-separation mechanism 220 is integrated with the liner 210 into a single operable liner module 200. Utilizing the attachment design of the base 300's receiving cavity 310 and the snap-fit ​​connection between the base 300 and the main frame 110, a highly modular assembly structure relying on simple mechanical connections (attachment + snap-fit) is constructed. This structure allows the pre-separation mechanism 220 (as part of the liner module 200) to be disassembled and assembled without any tools, requiring only basic hook-in / out and snap-fit / unlock actions, greatly simplifying the operation. Therefore, this solution effectively overcomes the cumbersome disassembly and assembly of the pre-separation mechanism 220 in the prior art, significantly improving the convenience and efficiency of daily maintenance for users, ultimately achieving the beneficial effect of enhancing the user experience.

[0078] Furthermore, since the pre-separation mechanism 220 is integrated into the liner module 200, and the liner module 200 extends into the receiving cavity 310, the pre-separation mechanism 220 can be accommodated in the existing space (receiving cavity 310) without having to increase the height dimension specifically for installing the pre-separation mechanism 220, which is beneficial for the miniaturization design of the device.

[0079] From the perspective of the attached diagram, the height direction of the suction device is vertical, the first direction is front-back, and the second direction is left-right.

[0080] From the perspective of the attached drawings, in the usage state, the opening 311 of the receiving cavity 310 is located at its top, and the liner module 200 extends downward into the receiving cavity 310 through the opening 311 and is attached to the base 300. The main body 100 is installed above the base 300 and closes the opening 311 of the receiving cavity 310.

[0081] See Figure 2 and Figure 6 In some embodiments, the cavity wall of the receiving cavity 310 is provided with a support platform 340, and the liner 210 is supported on the support platform 340. That is, the liner 210 is supported on the support platform 340 on one hand and hung on the base 300 on the other hand, which can improve the installation stability and firmness of the liner module 200.

[0082] Preferably, in some embodiments, the cavity wall of the receiving cavity 310 is provided with a plurality of support platforms 340, and the liner 210 is supported on the plurality of support platforms 340. In this way, the installation stability of the liner module 200 can be further improved. For example, in the embodiment shown in the figure, the front and rear cavities of the receiving cavity 310 are both provided with support platforms 340 to support the front and rear ends of the liner 210 respectively.

[0083] See Figure 2 , Figure 3 and Figure 6In some embodiments, the base 300 includes a base bottom plate 320 and a base side plate 330 connected to each other. The base side plate 330 extends from the base bottom plate 320 toward the side closer to the main body 100. The base bottom plate 320 and the base side plate 330 enclose a receiving cavity 310. A support platform 340 is provided on the base side plate 330.

[0084] Specifically, from the perspective of the attached drawings, the base side plate 330 extends upward from the base bottom plate 320. The aforementioned support platform 340 protrudes from the inner wall of the base side plate 330. The liner module 200 extends downward through the opening 311 into the inner side of the base side plate 330 and is placed on the support platform 340 protruding from the inner wall of the base side plate 330 to support the liner module 200. In other embodiments, the support platform 340 may also be formed by protruding upward from the base bottom plate 320.

[0085] See Figure 2 , Figure 3 and Figure 6 In some embodiments, the liner 210 includes a liner side plate 212 and a liner bottom plate 211. The liner side plate 212 extends from the liner bottom plate 211 toward the side closer to the main body 100. The liner bottom plate 211 is supported on the support platform 340, and the liner side plate 212 is attached to the base side plate 330.

[0086] Specifically, from the perspective of the attached drawings, the liner side plate 212 extends upward from the liner bottom plate 211. The top end of the liner side plate 212 is attached to the top end of the base side plate 330, thereby suspending the liner module 200 from the base side plate 330. At the same time, the support platform 340 also supports the liner bottom plate 211, thereby improving the installation stability and firmness of the liner module 200. In addition, the outer side wall of the liner side plate 212 is attached to the inner side wall of the base side plate 330, thereby guiding the liner module 200 when it is installed into the receiving cavity 310 and improving the stability after installation.

[0087] See Figure 2 , Figure 6 and Figure 13 In some embodiments, the liner 210 includes a flange 213 connected to the liner side plate 212, the flange 213 having a mounting surface 21321 extending toward the side opposite to the receiving cavity 310, the mounting surface 21321 being supported on the base side plate 330.

[0088] Specifically, from the perspective of the attached drawings, the flange 213 is connected to the top of the liner side plate 212. The two can be integrally formed, or they can be assembled by means of bonding or other methods. The mounting surface 21321 extends outward away from the receiving cavity 310, thereby being able to support the top of the base side plate 330. The mounting surface 21321 can be a horizontal surface or an inclined surface at a certain angle relative to the horizontal surface. When it is an inclined surface, it is preferably a downward inclined surface in the direction gradually away from the receiving cavity 310 (outward), which can reduce the risk of slipping off the top of the base side plate 330.

[0089] See Figure 2 , Figure 6 and Figure 13 In some embodiments, the flange 213 includes an extension 2131 and a hooking portion 2132. The extension 2131 extends from the liner side plate 212 toward the side closer to the main body 100, and the hooking portion 2132 extends from the extension 2131 toward the side away from the receiving cavity 310. The end face of the hooking portion 2132 away from the main body 100 is the hooking surface 21321.

[0090] Specifically, from the perspective of the attached drawings, the extension 2131 extends upward from the top of the liner side plate 212, the hooking part 2132 extends outward from the top of the extension 2131, and the bottom surface of the hooking part 2132 is the hooking surface 21321.

[0091] In other embodiments, the flange 213 may also be U-shaped, that is, in Figure 13 Based on the structure shown, a connecting part is added, extending downward from the outer end of the hook part 2132. This connecting part, along with the extension part 2131 and the hook part 2132, forms a U-shaped groove, into which the top end of the base side plate 330 extends. In this way, the relative displacement between the base side plate 330 and the liner side plate 212 can be better limited by the U-shaped groove, resulting in higher installation stability.

[0092] See Figure 2 , Figure 6 and Figure 13 In some embodiments, the flange 213 is annular, encircling the lining side plate 212. From the perspective of the accompanying drawings, this means that the top edge of the lining side plate 212 is suspended from the base side plate 330 by the flange 213, thus further improving the stability of the connection. Of course, in other embodiments, the flange 213 is not annular; the lining side plate 212 may be suspended from the base side plate 330 only by the flange 213 located in a portion of its area.

[0093] See Figure 2 , Figure 6 and Figure 13In some embodiments, an annular groove 114 is provided on one end of the main frame 110 near the base 300, and the base side plate 330 and the flange plate 213 extend into the annular groove 114 and are sealed to the groove wall of the annular groove 114.

[0094] Specifically, from the perspective of the attached drawings, the bottom end of the main frame 110 is provided with an annular groove 114 formed by an upward indentation. The top part of the base side plate 330 and the flange plate 213 extend into the annular groove 114, and the two are sealed to the groove wall of the annular groove 114, thereby improving the airtightness of the joint.

[0095] Furthermore, in some embodiments, an annular seal 410 is provided within the annular groove 114.

[0096] Specifically, from the perspective of the attached drawing, the top ends of the base side plate 330 and the flange plate 213 abut against the annular seal 410, thereby achieving a seal at the joint.

[0097] In some embodiments, the flange 213 is a flexible seal. This also achieves sealing at the joint. Preferably, an annular seal 410 is provided within the annular groove 114, and the flange 213 is a flexible seal, thus further improving sealing reliability.

[0098] See Figure 2 , Figure 3 and Figure 6 In some embodiments, the pre-separation mechanism 220 is installed on the side of the liner base plate 211 away from the main body 100, and the end of the pre-separation mechanism 220 away from the main body 100 abuts against the base plate 320.

[0099] Specifically, from the perspective of the attached drawings, the pre-separation mechanism 220 is installed below the liner base plate 211, and the bottom end of the pre-separation mechanism 220 abuts against the inner wall of the base plate 320. In this embodiment, the pre-separation mechanism 220 installed on the liner base plate 211 is also supported by the base plate 320, which can limit the downward displacement of the liner 210. At the same time, in conjunction with the aforementioned liner base plate 211 being supported on the support platform 340 and the liner side plate 212 being hung on the base side plate 330, the installation stability and firmness of the liner module 200 can be further improved.

[0100] See Figure 2 and Figure 6 In some embodiments, the pre-separation mechanism 220 is a cyclone separator 220a, which performs the initial filtration and separation of the airflow entering through the air inlet 112 by means of cyclone separation.

[0101] See Figure 2 , Figure 3 , Figure 5 and Figure 6In some embodiments, the receiving cavity 310 includes a transition channel 312 and a sludge collection space 313 separated by the liner 210 on both sides. The cyclone separator 220a is installed in the sludge collection space 313. The liner 210 is provided with a primary flow inlet 2111 communicating with the air inlet 112 and the sludge collection space 313, and a primary flow outlet 2112 communicating with the cyclone separator 220a and the transition channel 312. The main frame 110 is provided with a secondary flow inlet 115 communicating with the transition channel 312.

[0102] Specifically, from the perspective of the attached drawings, the transition channel 312 is located above the liner bottom plate 211, the sludge collection space 313 is located below the liner bottom plate 211, and the opening 311 of the receiving cavity 310 is blocked by the main body 100, that is, the transition channel 312 is located between the liner bottom plate 211 and the main body 100. The liner 210 is provided with a primary flow inlet 2111 connecting the air inlet 112 and the sludge collection space 313. Therefore, the external airflow flowing in from the air inlet 112 can flow into the sludge collection space 313 through the primary flow inlet 2111 and undergo cyclone filtration by the cyclone separator 220a installed in the sludge collection space 313. The liner 210 is provided with a primary flow outlet 2112 connecting the cyclone separator 220a and the transition channel 312. Therefore, the airflow after cyclone filtration by the cyclone separator 220a can flow into the transition channel 312 through the primary flow outlet 2112. The main frame 110 is provided with a secondary flow inlet 115 connected to the transition channel 312. Therefore, the airflow flowing into the transition channel 312 can flow into the inner cavity 111 through the secondary flow inlet 115 and be filtered again by the filter module 130 installed in the inner cavity 111. In this way, the liner 210 realizes the installation of the cyclone separator 220a and the directional guidance of the airflow, so that the airflow can complete two filtration separations in sequence.

[0103] See Figure 2 , Figure 3 and Figure 6 In some embodiments, an annular separation channel 2213 is formed between the cyclone separator 220a and the liner 210, the primary flow inlet 2111 is connected to the separation channel 2213, the cyclone separator 220a has a mesh 2211 connecting its internal cavity 2212 and the separation channel 2213, and the internal cavity 2212 is connected to the primary flow outlet 2112.

[0104] Specifically, the separation channel 2213 is located within the sludge collection space 313. The primary flow inlet 2111 is connected to the separation channel 2213 within the sludge collection space 313. Therefore, the airflow flowing in through the primary flow inlet 2111 can flow into the separation channel 2213. Since the separation channel 2213 is annular, when the airflow flows within it, large dust particles will be separated and fall off to the outside due to centrifugal force. The separated airflow can pass through the mesh 2211 provided on the cyclone separator 220a and reach the internal cavity 2212 of the cyclone separator 220a. Since the internal cavity 2212 is connected to the primary flow outlet 2112, and the primary flow outlet 2112 is connected to the transition channel 312, the airflow reaching the internal cavity 2212 can flow out through the primary flow outlet 2112 to the transition channel 312, and then flow into the inner cavity 111 through the secondary flow inlet 115.

[0105] See Figure 2 , Figure 3 , Figure 5 and Figure 6 In some embodiments, the liner 210 includes a liner base plate 211 and a guard plate 214. The transition channel 312 and the sludge collection space 313 are respectively disposed on both sides of the liner base plate 211. The liner base plate 211 is provided with a primary flow inlet 2111 and a primary flow outlet 2112. The guard plate 214 and the cyclone separator 220a both extend from the liner base plate 211 toward the sludge collection space 313, and the guard plate 214 surrounds the outside of the cyclone separator 220a to form a separation channel 2213 between the two.

[0106] Specifically, from the perspective of the attached drawings, both the protective plate 214 and the cyclone separator 220a extend downward from the liner base plate 211, and the cyclone separator 220a is aligned with the primary flow outlet 2112, so that the airflow flowing out of the internal cavity 2212 of the cyclone separator 220a can flow to the transition channel 312 through the primary flow outlet 2112. The protective plate 214 is annular and can be integrally formed with the liner base plate 211. The annular space constructed between the protective plate 214 and the cyclone separator 220a is the separation channel 2213. The bottom end of the separation channel 2213 is open, and the airflow entering the primary flow inlet 2111 can flow into the separation channel 2213 for cyclone separation. The separated large particles of dust will fall back to the bottom of the dirt collection space 313 from the bottom opening of the separation channel 2213.

[0107] See Figure 2 , Figure 3 and Figure 6In some embodiments, the cyclone separator 220a includes a mesh cover 221 and a skirt 222. The mesh cover 221 is connected to the liner base plate 211, and the skirt 222 is connected to the side of the mesh cover 221 away from the liner base plate 211. The mesh cover 221 has an internal cavity 2212 and mesh holes 2211. A protective plate 214 surrounds the outside of the mesh cover 221. In the direction away from the mesh cover 221, the skirt 222 is a cone with a gradually increasing diameter.

[0108] Specifically, from the perspective of the attached drawing, the mesh cover 221 is annular and has multiple through-holes 2211, with a hollow interior forming an internal cavity 2212. The mesh cover 221 extends downward from the bottom plate 211 of the liner, and the skirt 222 extends downward from the bottom end of the mesh cover 221. The mesh cover 221 and the skirt 222 can be assembled by means of bonding, welding, etc. In the downward direction, the skirt 222 is a cone shape with a gradually increasing diameter. Thus, the skirt 222 and the protective plate 214 together form the bottom opening of the aforementioned separation channel 2213. By setting the skirt 222 to a cone shape that is smaller at the top and larger at the bottom, it can block dust particles that fall to the bottom of the collection space 313, making it difficult for them to re-enter the separation channel 2213.

[0109] See Figure 2 , Figure 3 and Figure 6 In some embodiments, the cyclone separator 220a includes an abutment 223 connected to one end of the skirt 222 away from the mesh cover 221, the abutment 223 abutting against the base 300.

[0110] Specifically, from the perspective of the attached drawings, the abutment 223 extends downward from the bottom end of the cover skirt 222, and the bottom end of the abutment 223 abuts against the inner wall of the base plate 320. The pre-separation mechanism 220 (cyclone separator 220a) installed on the liner base plate 211 is supported on the base plate 320 by the abutment 223, which can limit the downward displacement of the liner 210. At the same time, in conjunction with the aforementioned liner base plate 211 being supported on the support platform 340 and the liner side plate 212 being hung on the base side plate 330, the installation stability and firmness of the liner module 200 can be further improved. In addition, since the guard plate 214 surrounds the outside of the mesh cover 221, the bottom opening of the separation channel 2213 formed between the two is usually small, and the cover skirt 222 is usually made of flexible material, making it difficult for users to apply force by inserting their fingers into the separation channel 2213 or by directly grasping and rotating the flexible cover skirt 222 when disassembling the cyclone separator 220a. In this embodiment, the abutment 223 is a rigid structure (e.g., made of plastic material), which provides clear and stable support and force points, making the disassembly and assembly process of the cyclone separator 220a more labor-saving and convenient.

[0111] See Figure 5 and Figure 6In some embodiments, the liner 210 includes a primary inflow pipe 215 connected between the liner base plate 211 and the guard plate 214, the primary inflow pipe 215 being connected to the primary inflow inlet 2111 and the separation channel 2213.

[0112] Specifically, from the perspective of the attached drawing, the primary inflow pipe 215 protrudes from the bottom end of the liner base plate 211, with one end connected to the primary inflow inlet 2111 and the other end connected to an opening in the protective plate 214, thus connecting to the separation channel 2213. The extension direction of the primary inflow pipe 215 is set at an angle relative to the radial direction of the protective plate 214, so that the airflow flowing out of the primary inflow pipe 215 flows tangentially into the separation channel 2213, which is beneficial for the airflow to form a cyclone after flowing into the separation channel 2213, thereby facilitating cyclone separation.

[0113] See Figure 3 and Figure 6 In some embodiments, the main frame 110 includes a surrounding plate 116 extending toward and abutting against the liner bottom plate 211. The surrounding plate 116 divides the side of the receiving cavity 310 away from the sludge collection space 313 into a transition channel 312 and an outer space 314. The primary flow inlet 2111 is located on the side where the outer space 314 is located, and the primary flow outlet 2112 is located on the side where the transition channel 312 is located.

[0114] Specifically, from the perspective of the attached drawings, the enclosure 116 is a ring-shaped structure with its ends connected, extending downwards and with its bottom end abutting against the liner bottom plate 211. The opening 311 of the receiving cavity 310 is blocked by the main body 100, and the space between the liner bottom plate 211 and the main body 100 is divided by the enclosure 116 into a transition channel 312 and an outer space 314. Because the transition channel 312 and the outer space 314 are separated, it is ensured that the airflow flowing to the primary flow inlet 2111 can only flow into the separation channel 2213, and after being filtered by the cyclone separator 220a, it can flow into the transition channel 312 through the primary flow outlet 2112, instead of directly reaching the primary flow outlet 2112 from the primary flow inlet 2111, thus ensuring the reliability of the airflow during the initial filtration and separation.

[0115] See Figure 2 , Figure 3 and Figure 6 In some embodiments, the liner base plate 211 is provided with a slot 2113, and the surrounding plate 116 is inserted into the slot 2113 and sealed to the slot wall of the slot 2113.

[0116] Specifically, from the perspective of the attached drawings, the top of the liner base plate 211 is recessed downwards to form a slot 2113; or, the top of the liner base plate 211 has two annular plates protruding upwards, with the slot 2113 formed between the two annular plates. The bottom end of the surrounding plate 116 is inserted into the slot 2113, and the two are sealed together to ensure airtightness at the joint.

[0117] More specifically, the slot 2113 is provided with a retaining plate seal 420, and the bottom end of the retaining plate 116 abuts against the retaining plate seal 420 to achieve a seal.

[0118] See Figure 2 , Figure 3 and Figure 6 In some embodiments, the suction device includes an air inlet pipe 140 connected between the main frame 110 and the liner base plate 211. One end of the air inlet pipe 140 is connected to the air inlet 112, and the other end extends into the peripheral space 314 and is connected to the primary inlet 2111.

[0119] Specifically, from the perspective of the attached drawings, the upper region of the intake pipe 140 is located within the inner cavity 111 of the main frame 110, while the bottom region protrudes downwards and extends into the peripheral space 314, connecting to the primary inlet 2111. In this way, the airflow flowing into the main frame 110 from the intake port 112 can be guided to the separation channel 2213 via the intake pipe 140. Of course, in other embodiments, the intake port 112 can also be directly located on the base 300.

[0120] See Figure 6 In some embodiments, the intake pipe 140 and the liner base plate 211 are sealed together at the primary inlet 2111.

[0121] Specifically, a pipe seal 430 is provided between the air intake pipe 140 and the primary flow inlet 2111 to achieve a seal and ensure airtightness at this location.

[0122] In the foregoing embodiments, the pre-separation mechanism 220 is a cyclone separator 220a, which performs initial filtration and separation of the airflow entering through the air inlet 112 by means of cyclone separation. In other embodiments, the pre-separation mechanism 220 may also perform initial filtration and separation in other ways, for example, see [reference needed]. Figure 14 The pre-separation mechanism 220 can also be a dust bag 220b. In this case, the dust bag 220b is directly installed in the receiving cavity 310 without the aid of the liner module 200. The airflow entering through the air inlet 112 flows into the dust bag 220b through the air inlet pipe 140. After initial filtration and separation, large dust particles will be collected inside the dust bag 220b. The airflow after initial filtration exits the dust bag 220b and is filtered again by the filter module 130. See also... Figure 4 A flip plate 350 is elastically connected to the base side plate 330, and the flip plate 350 can rotate up and down relative to the base side plate 330. Under the action of the spring elastic force, the flip plate 350 tends to flip upwards and maintain a horizontal position. (See reference...) Figure 14 When the receiving cavity 310 is filled with the dust bag 220b, the flip plate 350 is located on top of the dust bag 220b, limiting the position of the top of the dust bag 220b. (See reference...) Figure 6 When the liner module 200 and the cyclone separator 220a are installed in the receiving cavity 310, the tilting plate 350 is abutted by the liner module 200 and rotates downward. For example, in the embodiment shown in the figures, the tilting plate 350 is abutted by the primary inflow pipe 215 and rotates downward.

[0123] Alternatively, in some embodiments, neither the cyclone separator 220a nor the dust bag 220b may be installed, and the liquid may be drawn in solely by the suction device.

[0124] As previously stated, the base 300 is snapped into the main frame 110. (See also...) Figure 1 and Figure 2 In some embodiments, the main frame 110 has a latch 1150, and the base 300 has a locking block 331. The latch 1150 engages with the locking block 331 to achieve a snap-fit ​​fixation between the base 300 and the main frame 110. Preferably, the main frame 110 has two oppositely arranged latches 1150, and the base 300 has two oppositely arranged locking blocks 331, with each latch 1150 engaging with a corresponding locking block 331. This improves the snap-fit ​​strength and prevents loosening.

[0125] Of course, in other embodiments, the base 300 and the main frame 110 may also adopt other common snap-fit ​​structures.

[0126] See Figure 1 , Figure 3 , Figure 6 , Figure 7 and Figure 7a In some embodiments, the main body 100 further includes a cleaning component 150 installed in the inner cavity 111. The cleaning component 150 has a cleaning fluid inlet 151. A dust discharge valve 230 is also installed on the liner 210. The filter module 130 includes a filter 131. The suction device also has a self-cleaning mode. In the self-cleaning mode, the cleaning fluid inlet 151 and the dust discharge valve 230 are open. The airflow from the power component 120 and / or the external airflow entering from the internal and external communication port (e.g., the exhaust port 113, or other openings that can communicate with the external space) can flow sequentially through the cleaning fluid inlet 151, the filter 131 and the dust discharge valve 230 into the dirt collection space 313. The direction of the airflow through the filter 131 is opposite to the direction of the airflow through the filter 131 in the cleaning mode.

[0127] In some embodiments, in cleaning mode, the negative pressure of transition channel 312 is greater than the negative pressure of dirt collection space 313, so that dust discharge valve 230 is closed; in self-cleaning mode, the negative pressure of transition channel 312 is less than the negative pressure of dirt collection space 313, so that dust discharge valve 230 is opened.

[0128] In some embodiments, the dust discharge valve 230 includes a cover plate 231 rotatably connected to the liner 210, and the liner 210 is provided with a dust discharge port 2161 communicating with the transition channel 312 and the dirt collection space 313; in the cleaning mode, the cover plate 231 blocks the dust discharge port 2161; in the self-cleaning mode, the cover plate 231 rotates relative to the liner 210 to separate from the dust discharge port 2161.

[0129] In some embodiments, the liner 210 includes a liner protrusion 216 connected to the liner base plate 211. The liner protrusion 216 protrudes outward from the side of the liner base plate 211 away from the transition channel 312. The liner protrusion 216 surrounds a dust discharge chamber 2162 communicating with the transition channel 312. A dust discharge port 2161 is opened on the liner protrusion 216. The cover plate 231 is rotatably connected to the liner protrusion 216.

[0130] In some embodiments, the cross-sectional area of ​​the dust discharge chamber 2162 gradually decreases in the direction away from the transition channel 312.

[0131] The specific structure and installation method of components such as cleaning component 150, dust discharge valve 230, and liner protrusion 216 in the above embodiments, as well as the operation mode of the suction device in self-cleaning mode, will be further described in subsequent embodiments.

[0132] See Figure 3 ,as well as Figures 6 to 8 An embodiment of this application provides a suction device including a housing, a power unit 120, a cyclone separator 220a, a filter module 130, a cleaning component 150, and a dust discharge valve 230. The housing has an air inlet 112 and an exhaust outlet 113, and the interior of the housing includes a sludge collection space 313. The power unit 120 is installed inside the housing and provides suction power. The cyclone separator 220a is installed inside the housing (e.g., in the sludge collection space 313), and its inlet is connected to the air inlet 112. The filter module 130 is installed inside the housing and includes a filter 131; the outlet of the cyclone separator 220a is connected to the filter 131. The cleaning component 150 is installed inside the housing and has a cleaning fluid inlet 151. The dust discharge valve 230 is installed inside the housing. The suction device has a cleaning mode and a self-cleaning mode. In the cleaning mode, the cleaning fluid inlet 151 and the dust discharge valve 230 are closed, and the outside airflow can enter through the air inlet 112 and flow sequentially through the cyclone separator 220a, the filter 131, the power unit 120, and the exhaust port 113. The direction of the airflow through the filter 131 is the filtration direction (see...). Figure 11In self-cleaning mode, the cleaning fluid inlet 151 and the dust discharge valve 230 are opened, and the airflow from the power unit 120 and / or the external airflow from the internal and external communication ports (such as the exhaust port 113, or other openings that can communicate with the external space) can flow sequentially through the cleaning fluid inlet 151, the filter 131 and the dust discharge valve 230 into the dirt collection space 313, and the direction of the airflow through the filter 131 is opposite to the filtration direction.

[0133] In the above embodiment, the suction device, in self-cleaning mode, utilizes airflow generated by its own power or introduced external airflow to perform reverse blowing (opposite to the normal filtration direction), effectively removing dust accumulated on the surface of the filter 131. Simultaneously, the opening of the dust discharge valve 230 provides a dedicated discharge channel for the blown-off dust, allowing it to fall directly into the dirt collection space 313, thus preventing secondary adhesion of dust to the filter 131 and ensuring cleaning effectiveness. This design fully realizes in-situ automated cleaning of the filter 131, eliminating the need for manual disassembly and maintenance by the user. It solves the problem of frequent cleaning caused by dust accumulation and clogging in existing technologies, significantly reducing the user's operational burden and maintenance costs, and improving the long-term operational reliability and ease of use of the equipment.

[0134] Specifically, the housing includes the aforementioned main frame 110, liner 210, and base 300, and the connection structure between the three and the internal spatial communication method are the same as in the aforementioned embodiment. The structure and installation method of the power component 120, cyclone separator 220a, and filter module 130 are also the same as in the aforementioned embodiment.

[0135] In some embodiments, in a first state, the cleaning fluid inlet 151 and the dust discharge valve 230 are closed, and in a second state, the cleaning fluid inlet 151 and the dust discharge valve 230 are open.

[0136] Alternatively, in some embodiments, the opening degree of the cleaning fluid inlet 151 and the dust exhaust valve 230 in the first state is less than that in the second state. It should be noted that the opening degree of the cleaning fluid inlet 151 and the dust exhaust valve 230 in the first state should not be too large to avoid affecting the cleaning effect; the maximum opening degree can be 10%. The opening degree of the dust exhaust valve 230 is also the opening degree of the dust exhaust port 2161.

[0137] Alternatively, in some embodiments, the cleaning fluid inlet 151 and the dust exhaust valve 230 are intermittently opened and closed within a preset time period. Furthermore, within this preset time period, the total open time of the cleaning fluid inlet 151 and the dust exhaust valve 230 in the first state is less than the total open time of the cleaning fluid inlet 151 and the dust exhaust valve 230 in the second state. It should be noted that the total open time of the cleaning fluid inlet 151 and the dust exhaust valve 230 in the first state should not be too long to avoid affecting the cleaning effect; the ratio of the total open time in the first state to the total open time in the second state can not exceed 0.2.

[0138] See Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 7a In some embodiments, the housing includes a liner 210, one side of which has a dirt collection space 313. A cyclone separator 220a and a dust discharge valve 230 are mounted on the liner 210, and the other side of the liner 210 has a transition channel 312 communicating between the outlet of the cyclone separator 220a and the filter 131. In cleaning mode, the negative pressure in the transition channel 312 is greater than the negative pressure in the dirt collection space 313, causing the dust discharge valve 230 to close; in self-cleaning mode, the negative pressure in the transition channel 312 is less than the negative pressure in the dirt collection space 313, causing the dust discharge valve 230 to open.

[0139] In cleaning mode, the cleaning fluid inlet 151 is closed, and the transition channel 312 is closer to the dirt collection space 313 in the airflow path. Therefore, the negative pressure in the transition channel 312 is greater than the negative pressure in the dirt collection space 313, causing the dust discharge valve 230 to close. In self-cleaning mode, the cleaning fluid inlet 151 is open, and external airflow can flow in from the internal and external connection port (e.g., exhaust port 113, or other openings that can communicate with the external space), causing the negative pressure in the transition channel 312 to decrease and become less than the negative pressure in the dirt collection space 313, thereby causing the dust discharge valve 230 to open.

[0140] In cleaning mode, the dust discharge valve 230 is closed, and the outside airflow can enter through the air inlet 112 and flow through the cyclone separator 220a for initial filtration and separation. Then it flows through the filter 131 for secondary filtration and separation. After two filtrations, the clean airflow flows through the power component 120 and is discharged from the suction device through the exhaust port 113. In this way, dust can be vacuumed when used with the suction head or floor brush and other components, and the separation and filtration of the sucked-in dirty airflow can be completed. In self-cleaning mode, the cleaning fluid inlet 151 and the dust discharge valve 230 are open, and the airflow of the aforementioned cleaning mode still exists. At the same time, the airflow from the power unit 120 and / or the external airflow drawn in from the internal and external connection ports (such as the exhaust port 113, or other openings that can communicate with the external space) can flow in reverse through the cleaning fluid inlet 151 to the filter 131 and backflush the filter 131 to remove the dust attached to its surface, thereby achieving self-cleaning of the filter 131. After the airflow backflushes the filter 131, it enters the dirt collection space 313 through the dust discharge valve 230, thereby discharging the back-blown dust into the dirt collection space 313 to prevent it from re-attaching to the filter 131, ensuring a better self-cleaning effect.

[0141] See Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 7a In some embodiments, the dust discharge valve 230 includes a cover plate 231 rotatably connected to the liner 210, and the liner 210 is provided with a dust discharge port 2161 communicating with the transition channel 312 and the dirt collection space 313; in the cleaning mode, the cover plate 231 blocks the dust discharge port 2161; in the self-cleaning mode, the cover plate 231 rotates relative to the liner 210 to separate from the dust discharge port 2161.

[0142] Specifically, from the perspective of the attached drawings, the cover plate 231 is positioned below the liner 210. When the cover plate 231 rotates upwards, it blocks the dust discharge port 2161; when the cover plate 231 rotates downwards, it separates from the dust discharge port 2161 to open the dust discharge port 2161. Additionally, multiple baffles 2163 are provided at the dust discharge port 2161 to prevent the cover plate 231 from excessively rotating upwards (if the cover plate 231 is made of a flexible material such as silicone, the baffles 2163 are needed to prevent the cover plate 231 from excessively rotating upwards). When the cover plate 231 blocks the dust discharge port 2161, it contacts the baffles 2163. In other embodiments, the cover plate 231 can also be positioned above the liner 210, separating from the dust discharge port 2161 when the cover plate 231 rotates upwards.

[0143] See Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 7aIn some embodiments, the liner 210 includes a liner base plate 211 and a liner protrusion plate 216 connected to each other. The transition channel 312 and the dirt collection space 313 are respectively disposed on both sides of the liner base plate 211. The cyclone separator 220a is installed on the liner base plate 211. The liner protrusion plate 216 protrudes outward from the side of the liner base plate 211 away from the transition channel 312. The liner protrusion plate 216 surrounds a dust discharge chamber 2162 connected to the transition channel 312. A dust discharge port 2161 is opened on the liner protrusion plate 216. The cover plate 231 is rotatably connected to the liner protrusion plate 216.

[0144] Specifically, from the perspective of the attached drawings, the transition channel 312 is located above the liner base plate 211, and the dirt collection space 313 is located below the liner base plate 211. The cyclone separator 220a is installed below the liner base plate 211. The liner protrusion 216 protrudes outward from the bottom end of the liner base plate 211, and the top of the dust discharge chamber 2162 communicates with the transition channel 312. By setting the dust discharge chamber 2162, in self-cleaning mode, the airflow of the backflushing filter 131 can first be gathered when flowing through the transition channel 312 to the dust discharge chamber 2162, and then enter the dirt collection space 313 through the dust discharge port 2161.

[0145] See Figures 1 to 3 ,as well as Figure 6 , Figure 7 and Figure 7a In some embodiments, the housing includes a main frame 110 and a base 300. The main frame 110 has an inner cavity 111 and an air inlet 112 and an exhaust outlet 113 communicating with the inner cavity 111. A cleaning component 150, a power component 120, and a filter module 130 are installed in the inner cavity 111. The base 300 includes a receiving cavity 310 with an opening 311. A liner 210 extends into the receiving cavity 310 through the opening 311 and is connected to the base 300. The base 300 is connected to the main frame 110.

[0146] The specific connection structures in the above embodiments have been described in the foregoing embodiments, and can be referred to the foregoing embodiments.

[0147] See Figures 1 to 3 ,as well as Figure 6 , Figure 7 and Figure 7a In some embodiments, the receiving cavity 310 includes a transition channel 312 and a sludge collection space 313. The liner bottom plate 211 is provided with a primary flow inlet 2111 that connects to the air inlet 112 and the inlet of the cyclone separator 220a, and a primary flow outlet 2112 that connects to the outlet of the cyclone separator 220a and the transition channel 312. The main frame 110 is provided with a secondary flow inlet 115 that connects to the transition channel 312 and the filter 131.

[0148] The specific connection structures in the above embodiments have been described in the foregoing embodiments, and can be referred to the foregoing embodiments.

[0149] See Figure 2 , Figure 6 , Figure 7 and Figure 7a In some embodiments, the liner 210 includes a protective plate 214 connected to the liner bottom plate 211. Both the protective plate 214 and the cyclone separator 220a extend from the liner bottom plate 211 toward the sludge collection space 313, and the protective plate 214 surrounds the outside of the cyclone separator 220a to form an annular separation channel 2213 between them. The primary flow inlet 2111 is connected to the separation channel 2213. The cyclone separator 220a has a mesh 2211 that connects its internal cavity 2212 and the separation channel 2213. The internal cavity 2212 is connected to the primary flow outlet 2112.

[0150] The specific connection structure in the above embodiments has been described in the foregoing embodiments, and can be referred to the foregoing embodiments. It should be noted that the bottom area of ​​the separation channel 2213 is the inlet of the cyclone separator 220a; the outlet of the cyclone separator 220a is the internal cavity 2212.

[0151] See Figure 3 , Figure 6 , Figure 7 and Figure 7a In some embodiments, the main frame 110 includes a surrounding plate 116 extending toward and abutting against the liner bottom plate 211. The surrounding plate 116 divides the side of the receiving cavity 310 away from the sludge collection space 313 into a transition channel 312 and an outer space 314. The primary flow inlet 2111 is located on the side where the outer space 314 is located, and the primary flow outlet 2112 is located on the side where the transition channel 312 is located.

[0152] The specific connection structures in the above embodiments have been described in the foregoing embodiments, and can be referred to the foregoing embodiments.

[0153] In self-cleaning mode, the airflow from the backflushing filter 131 flows through the transition channel 312 to the dust discharge chamber 2162 for accumulation, then passes through the dust discharge port 2161 into the bottom of the dirt collection space 313, and then enters the separation channel 2213. After that, the direction of the airflow is basically the same as in the aforementioned cleaning mode (the difference is that after flowing out of the power component 120, it may not be discharged directly from the exhaust port 113, but instead reaches the filter 131 from the cleaning fluid inlet 151 to backflushing it).

[0154] See Figure 1 , Figure 6 , Figure 7 , Figure 7a and Figure 13 In some embodiments, the liner 210 is attached to the base 300, and the base 300 is snapped onto the main frame 110.

[0155] The specific connection structures in the above embodiments have been described in the foregoing embodiments, and can be referred to the foregoing embodiments.

[0156] See Figure 2 , Figure 6 , Figure 7 and Figure 7a In some embodiments, the cavity wall of the receiving cavity 310 is provided with a support platform 340, and the liner 210 is supported on the support platform 340.

[0157] The specific connection structures in the above embodiments have been described in the foregoing embodiments, and can be referred to the foregoing embodiments.

[0158] See Figure 3 , Figure 6 , Figure 7 and Figure 7a In some embodiments, the cross-sectional area of ​​the dust discharge chamber 2162 gradually decreases in the direction away from the transition channel 312.

[0159] Specifically, from the perspective of the attached diagram, the cross-sectional area of ​​the dust discharge chamber 2162 gradually decreases from top to bottom. This arrangement facilitates the further accumulation of dust-laden airflow here, which is then concentrated and discharged into the dirt collection space 313 through the dust discharge port 2161.

[0160] In some embodiments, the projection of the secondary inlet 115 in the height direction of the suction device and the projection of the dust discharge chamber 2162 in the height direction of the suction device at least partially overlap.

[0161] In this way, it can be ensured that the backflush airflow flowing through the secondary inlet 115 and the dust falling off the backflush can accurately enter the dust discharge chamber 2162, and then be discharged into the dirt collection space 313 from the dust discharge port 2161. Preferably, the projection of the secondary inlet 115 in the height direction of the suction device is located within the projection range of the dust discharge chamber 2162 in the height direction of the suction device.

[0162] See Figure 2 , Figure 6 , Figure 7 and Figure 7a In some embodiments, the cyclone separator 220a and the liner protrusion 216 are arranged at intervals in a first direction, which is perpendicular to the height direction of the suction device.

[0163] Specifically, from the perspective of the attached figure, the secondary inlet 115 is located directly below the filter 131, and the liner protrusion 216 is located directly below the secondary inlet 115; the cyclone separator 220a is located in front of the liner protrusion 216, and the projections of the two on the horizontal plane do not overlap.

[0164] In some embodiments, the projection of the cyclone separator 220a along the height direction of the suction device is located in the central region of the sludge collection space 313. This arrangement avoids the tilting plate 350 while preventing the cyclone separator 220a from being too close to the edge, which could cause filtered debris to get stuck between the cyclone separator 220a and the base side plate 330.

[0165] See Figure 15 In other embodiments, the dust discharge valve 230 is installed on the cyclone separator 220a, and the projections of the two in the height direction of the suction device at least partially overlap. In self-cleaning mode, the airflow can flow sequentially through the cleaning fluid inlet 151, the filter 131, the cyclone separator 220a and the dust discharge valve 230 into the bottom of the dirt collection space 313.

[0166] This embodiment is equivalent to moving the cyclone separator 220a in the previous embodiment to the rearward side, directly below the secondary inlet 115. Specifically, from the perspective of the attached drawings, the dust discharge valve 230 is installed below the cyclone separator 220a, and the bottom of the cyclone separator 220a has a dust discharge port. In self-cleaning mode, the airflow from the backflushing filter 131 flows into the cyclone separator 220a through the primary inlet 2111, passes through the dust discharge port at its bottom, and enters the bottom of the dirt collection space 313 through the dust discharge valve 230. Afterward, the airflow can flow back in from the inlet of the cyclone separator 220a (the bottom end of the separation channel 2213). In the above embodiment, the airflow can pass through the cyclone separator 220a in reverse, thus allowing the cyclone separator 220a to be backflushed, blowing the dust attached to its surface to the bottom of the dirt collection space 313.

[0167] See Figure 2 , Figure 3 and Figure 6 In some embodiments, a liquid level sensor is provided on the housing. The liquid level sensor includes a floating element 161 and a sensing element. The floating element 161 can float on the liquid surface. When the floating element 161 floats to a preset position with the liquid surface, it can trigger the sensing element to generate a trigger signal.

[0168] Furthermore, in some embodiments, a through hole 2114 is provided on the liner bottom plate 211, through which the liquid level sensor extends into the sludge collection space 313.

[0169] Specifically, a liquid level sensor is provided on the main frame 110. The liquid level sensor extends downward into the collection space 313 through the through hole 2114. The liquid level sensor includes a floating component 161 and a floating component housing 162 that are movably connected. The floating component 161 is installed inside the floating component housing 162, which has a perforated hole at the bottom and is fixedly connected to the main frame 110. When this suction device is used in wet cleaning equipment such as floor scrubbers, liquid accumulates in the collection space 313. When the liquid level rises to a certain height, the liquid will enter the floating component housing 162 through the perforated hole at the bottom of the floating component housing 162 and push the floating component 161 upward by buoyancy. The sensor is communicatively connected to the controller of the suction device. When the floating component 161 rises to a preset position, it can trigger the sensor to send a trigger signal to the controller. The controller controls the corresponding components (such as a voice prompt or a light display on the screen) to remind the user that there is too much liquid in the collection space 313 and it needs to be emptied. Simultaneously, the controller will stop the power unit 120 from providing suction power, thus stopping the suction device from operating. This prevents excessive liquid accumulation in the collection space 313 from damaging components such as the power unit 120 and the filter 131.

[0170] Preferably, the through hole 2114 is located on the side where the peripheral space 314 is located. In this way, the sealing performance of the fluid channel will not be affected by the provision of the through hole 2114.

[0171] Furthermore, in some embodiments, one of the floating element 161 and the sensing element is a magnetic element and the other is a magnetic sensor.

[0172] For example, the floating element 161 is a magnet, and the sensing element is a magnetic sensor. When the floating element 161 rises with the liquid level to a preset position, it will enter the sensing range of the magnetic sensor. The magnetic sensor can detect the magnet and generate a trigger signal.

[0173] Alternatively, in some embodiments, one of the floating element 161 and the sensing element is an ultrasonic transmitter and the other is an ultrasonic receiver. Alternatively, in some embodiments, one of the floating element 161 and the sensing element is a light transmitter and the other is a light receiver.

[0174] Alternatively, in some embodiments, one of the floating element 161 and the sensing element includes a first electrical connection terminal and the other includes a second electrical connection terminal. When the floating element 161 floats to a preset position with the liquid surface, a trigger signal is generated when the first electrical connection terminal and the second electrical connection terminal come into contact with each other.

[0175] If the suction device is used in dusty environments such as construction sites, it may cause sparking issues due to the large amount of dust it draws in during operation, especially with the aforementioned electrical connection triggering method. Therefore, the aforementioned non-contact triggering method (magnetic induction, ultrasonic waves, or light emission, etc.) should be preferred.

[0176] See Figure 6 , Figure 7 , Figure 7a and Figure 11 In some embodiments, the power unit 120 and the filter module 130 are arranged at intervals along a first direction, which is perpendicular to the height direction of the suction device; the filter module 130 is installed at an angle so that the angle between the filtration direction and the first direction is an acute angle.

[0177] Specifically, from the perspective of the attached drawings, the power component 120 is located at the front of the filter module 130, and the filter module 130 is installed at an angle, which saves installation space. Furthermore, it reduces scratching of the filter module 130 during assembly and disassembly. Preferably, the filter module 130 is installed at a 45-degree angle, that is, the angle between the filtration direction and the first direction is 45 degrees, which maximizes the saving of installation space.

[0178] Furthermore, in some embodiments, the air inlet 112, the power unit 120, and the filter module 130 are arranged at intervals along a first direction. This arrangement allows the airflow to have a longer path in cleaning mode, optimizing the filtration effect. Especially when the dust bag 220b is installed, the longer airflow path allows the dust bag 220b to open more fully, thus making the airflow through the dust bag 220b smoother.

[0179] See Figure 6 , Figure 7 , Figure 7a and Figure 11 In some embodiments, the cleaning component 150 is located in a first direction between the power component 120 and the filter module 130, and the three components form a triangular space 117.

[0180] Specifically, from the perspective of the attached diagram, the cleaning component 150 is located above the filter module 130 and the power component 120, and is positioned between the filter module 130 and the power component 120 in the front-to-back direction. In self-cleaning mode, the airflow from the cleaning fluid inlet 151 on the cleaning component 150 reaches the triangular space 117, and then flows through the filter 131 to backflush it. By positioning the cleaning component 150 at the top and arranging it in a triangular pattern with the filter module 130 and the power component 120, the amount of airflow flowing from the cleaning fluid inlet 151 to the triangular space 117 that flows into the power component 120 can be minimized (in reality, a small portion will flow into the power component 120), allowing this portion of airflow to backflush the filter 131 as much as possible, thus optimizing the self-cleaning effect.

[0181] See Figure 6 , Figure 7 , Figure 7a and Figure 11In some embodiments, the cleaning component 150, the power component 120, and the filter module 130 form a right-angled triangular space, with the filter module 130 located on the hypotenuse of this right-angled triangle. This further reduces the airflow from the cleaning fluid inlet 151 to the triangular space 117 flowing into the power component 120 (to flow into the power component 120, it needs to turn forward, while flowing through the filter 131 only requires downward flow), resulting in better self-cleaning performance.

[0182] See Figure 6 , Figure 7 , Figure 7a and Figure 11 In some embodiments, a shielding member 170 is provided between the power component 120 and the filter module 130. The shielding member 170 is provided with a connecting port 171 that is connected to the inlet of the power component 120 and faces the outlet end face 1314 of the filter 131.

[0183] Specifically, from the perspective of the attached drawings, a baffle 170 is installed at the air inlet end of the power unit 120. By setting the baffle 170, the airflow flowing from the clean fluid inlet 151 to the triangular space 117 can be blocked, further reducing its inflow into the power unit 120. The connecting port 171 on the baffle 170 faces the outlet end face 1314 of the filter 131, ensuring that the clean airflow filtered by the filter 131 can smoothly flow into the inlet of the power unit 120 through the connecting port 171 after exiting from the outlet end face 1314.

[0184] See Figure 3 , Figure 6 and Figure 12 In some embodiments, the housing has an installation port 118 on one side along the first direction, and the filter module 130 is detachably installed in the housing through the installation port 118 along the first direction.

[0185] Specifically, as shown in the attached drawings, the rear side wall of the main frame 110 has an installation port 118 communicating with the inner cavity 111, and the filter module 130 is installed in the inner cavity 111 through the installation port 118. Since the filter module 130 can be detached and installed through the installation port 118, it is convenient to clean or replace it regularly to ensure a better filtration effect.

[0186] See Figure 3 , Figure 6 and Figure 12 In some embodiments, the filter module 130 includes a filter housing 132 and a snap-fit ​​member 133 resiliently connected to the filter housing 132, the filter 131 being installed within the filter housing 132, and the snap-fit ​​member 133 being configured to be operably resiliently movable to snap onto or detach from the housing.

[0187] Specifically, the filter module 130 includes an elastic element 134, one end of which is connected to the snap-fit ​​element 133, and the other end is connected to the filter housing 132. The main frame 110 includes a first snap-fit ​​block 1120, and the snap-fit ​​element 133 includes a second snap-fit ​​block 1331. Under the restoring force of the elastic element 134, the first snap-fit ​​block 1120 and the second snap-fit ​​block 1331 engage to prevent the filter module 130 from exiting the mounting port 118. The snap-fit ​​element 133 includes an exposed first operating groove 1332, and the filter housing 132 also has a second operating groove 1323. When removing the filter module 130 from the mounting port 118, the user only needs to insert two fingers into the first operating groove 1332 and the second operating groove 1323 respectively, and press down on the groove wall of the first operating groove 1332 to push the second locking block 1331 downward, thereby releasing the engagement between the second locking block 1331 and the first locking block 1120. At this time, the filter module 130 can be removed from the mounting port 118.

[0188] See Figure 6 , Figure 8 and Figure 12 In some embodiments, one of the ends of the filter housing 132 along the second direction and the housing is provided with a guide groove 119, and the other is provided with a guide block 1321. When the filter module 130 is installed on the housing along the first direction through the mounting port 118, the guide block 1321 slides in the guide groove 119. The second direction, the first direction and the height direction of the suction device are perpendicular to each other.

[0189] When the filter module 130 is installed, the guide block 1321 slides in the guide groove 119, which can guide and position the filter module 130 during installation, which is conducive to quick installation and ensures installation accuracy.

[0190] See Figure 6 , Figure 8 and Figure 12 In some embodiments, the housing is provided with a guide groove 119, and the size of the guide groove 119 gradually decreases in the direction in which the filter module 130 slides into the housing.

[0191] Specifically, from the perspective of the attached drawings, guide blocks 1321 are provided at both ends of the filter housing 132, and guide grooves 119 are provided at corresponding positions on the main frame 110. The size of the guide grooves 119 gradually decreases in the direction in which the filter module 130 slides into the housing, that is, the guide grooves 119 are similar to a trumpet shape. This arrangement facilitates the guide blocks 1321 entering the guide grooves 119, improving installation efficiency. Furthermore, after installation, the guide blocks 1321 abut against the groove wall of the guide grooves 119 to improve installation stability.

[0192] See Figure 6 and Figure 12In some embodiments, the housing includes a main frame 110, and the filter module 130, power component 120 and cleaning component 150 are all installed inside the main frame 110. The main frame 110 has a secondary flow inlet 115 that connects the outlet of the cyclone separator 220a and the inlet end face 1313 of the filter 131. An inlet seal 440 is installed at the secondary flow inlet 115.

[0193] Specifically, the secondary flow inlet 115 is located at the bottom of the filter 131. The airflow reaching the transition channel 312 flows upward into the secondary flow inlet 115 and enters the filter housing 132. Then, it flows from the inlet end face 1313 of the filter 131 towards the outlet end face 1314, completing the secondary filtration of the airflow. By providing an inlet seal 440 at the secondary flow inlet 115, the airtightness at this location can be improved.

[0194] See Figure 11 Preferably, a dust discharge channel 135 inclined relative to the first direction is constructed between the filter housing 132 and the inlet end face 1313, and the dust discharge channel 135 is aligned with the secondary flow inlet 115. This arrangement ensures that the backflushing airflow flows from the inlet end face 1313 into the dust discharge channel 135, and then accurately into the secondary flow inlet 115.

[0195] See Figure 6 and Figure 12 In some embodiments, the projected area of ​​the secondary inlet 115 along the height direction of the suction device is less than half the projected area of ​​the inlet end face 1313 along the filtration direction, and the inlet seal 440 extends in a plane perpendicular to the height direction (i.e., the inlet seal 440 is installed horizontally).

[0196] Understandably, if the inlet seal 440 is installed at an angle similar to that of the filter module 130, the installation space can be reduced, and the scratches that the filter module 130 may experience during installation and removal can be minimized. However, if the installation space is limited and the inlet seal 440 can only be installed horizontally, designing the area of ​​the secondary flow inlet 115 to be smaller (less than half the area of ​​the inlet end face 1313) can also reduce the scratches that the filter module 130 may experience during installation and removal (because the inlet seal 440, which may cause scratches, is smaller).

[0197] In other embodiments, the plane containing the secondary inlet 115 is angled to the plane perpendicular to the height direction. That is, the secondary inlet 115 is inclined. For example, the plane containing the secondary inlet 115 is parallel to the inlet end face 1313.

[0198] See Figures 6 to 9In some embodiments, the filter module 130 includes a filter housing 132, a filter 131, and a filter seal 450. The filter 131 is installed inside the filter housing 132, and the filter seal 450 is provided between the two. The housing is provided with a rib plate 1110 extending toward the outlet end face 1314 of the filter 131. The rib plate 1110 abuts against one side of the filter seal 450, and the other side of the filter seal 450 is in concave-convex fit with the filter housing 132.

[0199] Specifically, the filter seal 450 is fitted over the filter 131. By placing the filter seal 450 between the filter 131 and the filter housing 132, the airtightness at the joint can be enhanced. The main frame 110 is provided with a stiffener 1110 extending toward the outlet end face 1314, and the filter seal 450 has a recess 451 on the other side. The filter housing 132 includes a protrusion 1322 that extends into the recess 451. In this way, the stiffener 1110 abuts against one side of the filter seal 450, while the other side of the filter seal 450 forms a labyrinthine sealing structure with a convex-concave fit through the protrusion 1322 extending into the recess 451, which can improve the airtightness of this area.

[0200] See Figures 8 to 10 In some embodiments, the filter 131 includes a support 1312 and a filter section 1311 mounted on the support 1312. The support 1312 is fixedly mounted on the filter housing 132. The filter section 1311 can be HEPA. Specifically, the support 1312 includes a support bar 13121 and a frame 13122 connected together, wherein the frame 13122 surrounds the outside of the filter section 1311, and the support bar 13121 is disposed at the outlet end face 1314 of the filter section 1311. The support bar 13121 and the frame 13122 can form a support for the filter section 1311, making it less prone to deformation. In addition, a handle 13123 is also provided on the support bar 13121 to facilitate user gripping the handle 13123 for disassembly and assembly operations.

[0201] See Figures 6 to 7a In some embodiments, a valve body 180 is movably connected to the cleaning component 150, and the valve body 180 is movable relative to the cleaning component 150 to block or open the cleaning fluid inlet 151.

[0202] Specifically, from the perspective of the attached drawings, the valve body 180 is located above the cleaning fluid inlet 151. The valve body 180 can move downward relative to the cleaning component 150 to block the cleaning fluid inlet 151; the valve body 180 can also move upward relative to the cleaning component 150 to open the cleaning fluid inlet 151.

[0203] In some embodiments, the valve body 180 is configured to move relative to the cleaning member 150 by magnetic force. For example, the valve body 180 is a magnet, and an electromagnet is provided, which drives the valve body 180 to move up and down by the magnetic force between the electromagnet and the valve body 180. Alternatively, in other embodiments, a driving member such as a cylinder may be provided to drive the valve body 180 to move up and down.

[0204] See Figure 1 The cleaning device provided in one embodiment of this application includes the suction device in any of the foregoing embodiments.

[0205] In some embodiments, the cleaning equipment may be a vacuum cleaner, a floor scrubber, etc.

[0206] In some embodiments, the top of the main frame 110 is further provided with a recessed storage cavity 1130, which can store cables and the like. The storage cavity 1130 is also provided with a protruding handle 1140, so that the user can hold the suction device by the handle 1140. The front side wall of the main frame 110 is also provided with an operation panel 1160 for user operation.

[0207] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0208] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A suction device, characterized in that, The suction device includes: a housing having an air inlet (112) and an exhaust outlet (113), the interior of which includes a dirt collection space (313); a power unit (120) installed inside the housing and used to provide suction power; a cyclone separator (220a) installed inside the housing, with the inlet of the cyclone separator (220a) connected to the air inlet (112); a filter module (130) installed inside the housing, the filter module (130) including a filter (131), the outlet of the cyclone separator (220a) connected to the filter (131); a cleaning unit (150) installed inside the housing and having a cleaning fluid inlet (151); and a dust discharge valve (230) installed inside the housing; the suction device has a cleaning mode and a self-cleaning mode; in the cleaning mode, the cleaning fluid inlet (151) and the dust discharge valve (230) are in a first state, and the outside air... The airflow can enter through the air inlet (112) and flow sequentially through the cyclone separator (220a), the filter (131), the power unit (120), and the exhaust port (113), and the airflow direction through the filter (131) is the filtration direction; in the self-cleaning mode, the cleaning fluid inlet (151) and the dust discharge valve (230) are in the second state, and the airflow from the power unit (120) and / or the external airflow entering from the internal and external connection port can flow sequentially through the cleaning fluid inlet (151), the filter (131), and the dust discharge valve (230) into the dirt collection space (313), and the airflow direction through the filter (131) is opposite to the filtration direction; a valve body (180) is movably connected to the cleaning unit (150), and the valve body (180) can move relative to the cleaning unit (150) to block or open the cleaning fluid inlet (151).

2. The suction device according to claim 1, characterized in that, The valve body (180) is configured to move relative to the cleaning element (150) by magnetic force.

3. The suction device according to claim 1, characterized in that, The dust discharge valve (230) is installed on the cyclone separator (220a), and their projections in the height direction of the suction device at least partially overlap. In the self-cleaning mode, the airflow can flow sequentially through the cleaning fluid inlet (151), the filter (131), the cyclone separator (220a) and the dust discharge valve (230) into the bottom of the dirt collection space (313).

4. The suction device according to claim 1, characterized in that, In the first state, the cleaning fluid inlet (151) and the dust exhaust valve (230) are closed; in the second state, the cleaning fluid inlet (151) and the dust exhaust valve (230) are open; or, in the first state, the degree of opening of the cleaning fluid inlet (151) and the dust exhaust valve (230) is less than the degree of opening of the cleaning fluid inlet (151) and the dust exhaust valve (230) in the second state; or, within a preset time period, the cleaning fluid inlet (151) and the dust exhaust valve (230) are intermittently opened and closed, and within the preset time period, the total opening time of the cleaning fluid inlet (151) and the dust exhaust valve (230) in the first state is less than the total opening time of the cleaning fluid inlet (151) and the dust exhaust valve (230) in the second state.

5. The suction device according to claim 1, characterized in that, The housing includes a liner (210), one side of which has a dirt collection space (313). The cyclone separator (220a) and the dust discharge valve (230) are installed on the liner (210). The other side of the liner (210) has a transition channel (312) connecting the outlet of the cyclone separator (220a) and the filter (131). In the cleaning mode, the negative pressure of the transition channel (312) is greater than the negative pressure of the dirt collection space (313), so that the dust discharge valve (230) is closed. In the self-cleaning mode, the negative pressure of the transition channel (312) is less than the negative pressure of the dirt collection space (313), so that the dust discharge valve (230) is opened.

6. The suction device according to claim 5, characterized in that, The dust discharge valve (230) includes a cover plate (231) rotatably connected to the liner (210). The liner (210) is provided with a dust discharge port (2161) communicating with the transition channel (312) and the dirt collection space (313). In the cleaning mode, the cover plate (231) blocks the dust discharge port (2161). In the self-cleaning mode, the cover plate (231) rotates relative to the liner (210) to separate from the dust discharge port (2161).

7. The suction device according to claim 6, characterized in that, The lining (210) includes a lining base plate (211) and a lining protrusion plate (216) connected to each other. The transition channel (312) and the dirt collection space (313) are respectively located on both sides of the lining base plate (211). The cyclone separator (220a) is installed on the lining base plate (211). The lining protrusion plate (216) protrudes outward from the side of the lining base plate (211) away from the transition channel (312). The lining protrusion plate (216) surrounds a dust discharge chamber (2162) connected to the transition channel (312). The dust discharge port (2161) is opened on the lining protrusion plate (216). The cover plate (231) is rotatably connected to the lining protrusion plate (216).

8. The suction device according to claim 7, characterized in that, The housing includes a main frame (110) and a base (300). The main frame (110) has an inner cavity (111), an air inlet (112), and an exhaust outlet (113). The power unit (120) and the filter module (130) are installed in the inner cavity (111). The base (300) includes a receiving cavity (310) with an opening (311). The liner (210) extends into the receiving cavity (310) through the opening (311) and is connected to the base (300). The base (300) is connected to the main frame (110).

9. The suction device according to claim 8, characterized in that, The liner (210) is attached to the base (300), and the base (300) is snapped into the main frame (110).

10. The suction device according to claim 9, characterized in that, The cavity wall of the receiving cavity (310) is provided with a support platform (340), and the liner (210) is supported on the support platform (340).

11. The suction device according to claim 8, characterized in that, The receiving cavity (310) includes the transition channel (312) and the sludge collection space (313). The liner bottom plate (211) is provided with a primary flow inlet (2111) that connects the air inlet (112) and the inlet of the cyclone separator (220a), and a primary flow outlet (2112) that connects the outlet of the cyclone separator (220a) and the transition channel (312). The main frame (110) is provided with a secondary flow inlet (115) that connects the transition channel (312) and the filter (131).

12. The suction device according to claim 11, characterized in that, The power unit (120) and the filter module (130) are arranged at intervals along a first direction, which is perpendicular to the height direction of the suction device; the filter module (130) is installed at an angle so that the angle between the filtration direction and the first direction is an acute angle.

13. The suction device according to claim 12, characterized in that, The plane containing the secondary inlet (115) is set at an angle to the plane perpendicular to the height direction.

14. The suction device according to claim 12, characterized in that, The cleaning component (150) is located between the power component (120) and the filter module (130) in the first direction, and the three components form a triangular space (117).

15. The suction device according to claim 14, characterized in that, The cleaning component (150), the power component (120), and the filter module (130) form a right-angled triangular space, with the filter module (130) located on the hypotenuse of the right-angled triangle.

16. The suction device according to claim 15, characterized in that, A shield (170) is provided between the power component (120) and the filter module (130). The shield (170) is provided with a connecting port (171) that connects to the inlet of the power component (120). The connecting port (171) faces the outlet end face (1314) of the filter (131).

17. The suction device according to claim 15, characterized in that, The housing has an installation port (118) on one side along the first direction, and the filter module (130) is detachably installed in the housing through the installation port (118) along the first direction.

18. The suction device according to claim 17, characterized in that, The filter module (130) includes a filter housing (132) and a snap-fit ​​(133) elastically connected to the filter housing (132). The filter (131) is installed inside the filter housing (132). The snap-fit ​​(133) is configured to be operably elastically movable to snap onto or detach from the housing.

19. The suction device according to claim 18, characterized in that, Of the filter housing (132) and the housing, one end along the second direction is provided with a guide groove (119), and the other end is provided with a guide block (1321). When the filter module (130) is installed on the housing along the first direction through the mounting port (118), the guide block (1321) slides in the guide groove (119). The second direction, the first direction, and the height direction of the suction device are perpendicular to each other.

20. The suction device according to claim 19, characterized in that, The housing is provided with the guide groove (119), and the size of the guide groove (119) gradually decreases in the direction in which the filter module (130) slides into the housing.

21. The suction device according to claim 15, characterized in that, The housing includes a main frame (110), and the filter module (130), the power component (120) and the cleaning component (150) are all installed in the main frame (110). The main frame (110) has a secondary flow inlet (115) that connects the outlet of the cyclone separator (220a) and the inlet end face (1313) of the filter (131). An inlet seal (440) is installed at the secondary flow inlet (115).

22. The suction device according to claim 21, characterized in that, The projected area of ​​the secondary inlet (115) along the height direction of the suction device is less than half the projected area of ​​the inlet end face (1313) along the filtration direction, and the inlet seal (440) extends in a plane perpendicular to the height direction.

23. The suction device according to claim 21, characterized in that, The filter module (130) includes a filter housing (132), a filter (131), and a filter seal (450). The filter (131) is installed inside the filter housing (132), and the filter seal (450) is provided between the two. The housing is provided with a rib plate (1110) extending toward the outlet end face (1314) of the filter (131). The rib plate (1110) abuts against one side of the filter seal (450), and the other side of the filter seal (450) is in concave-convex fit with the filter housing (132).

24. The suction device according to claim 23, characterized in that, A dust discharge channel (135) inclined relative to the first direction is formed between the filter housing (132) and the inlet end face (1313), and the dust discharge channel (135) is aligned with the secondary flow inlet (115).

25. The suction device according to claim 23, characterized in that, The air inlet (112), the power unit (120), and the filter module (130) are arranged at intervals along the first direction.

26. The suction device according to claim 11, characterized in that, The liner (210) includes a guard plate (214) connected to the liner bottom plate (211). The guard plate (214) and the cyclone separator (220a) both extend from the liner bottom plate (211) toward the sludge collection space (313). The guard plate (214) surrounds the outside of the cyclone separator (220a) to form an annular separation channel (2213) between them. The primary flow inlet (2111) is connected to the separation channel (2213). The cyclone separator (220a) has a mesh (2211) connecting its internal cavity (2212) and the separation channel (2213). The internal cavity (2212) is connected to the primary flow outlet (2112).

27. The suction device according to claim 11, characterized in that, The main frame (110) includes a surrounding plate (116) extending toward and abutting against the liner bottom plate (211). The surrounding plate (116) divides the side of the receiving cavity (310) away from the sludge collection space (313) into the transition channel (312) and the peripheral space (314). The primary flow inlet (2111) is located on the side where the peripheral space (314) is located, and the primary flow outlet (2112) is located on the side where the transition channel (312) is located.

28. The suction device according to claim 27, characterized in that, The housing is equipped with a liquid level sensor, which includes a floating element (161) and a sensing element. The floating element (161) can float on the liquid surface. When the floating element (161) floats to a preset position with the liquid surface, it can trigger the sensing element to generate a trigger signal.

29. The suction device according to claim 28, characterized in that, A through hole (2114) is provided on the bottom plate (211) of the liner, and the liquid level sensor extends into the dirt collection space (313) through the through hole (2114).

30. The suction device according to claim 11, characterized in that, The projection of the secondary inlet (115) in the height direction of the suction device and the projection of the dust discharge chamber (2162) in the height direction of the suction device at least partially overlap.

31. The suction device according to claim 7, characterized in that, In the direction away from the transition channel (312), the cross-sectional area of ​​the dust discharge chamber (2162) gradually decreases.

32. The suction device according to claim 7, characterized in that, The cyclone separator (220a) and the liner protrusion (216) are arranged at intervals in a first direction, which is perpendicular to the height direction of the suction device.

33. A cleaning device, characterized in that, The cleaning equipment includes the suction device according to any one of claims 1 to 32.

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