Cyclone separation device, dust cup and cleaning apparatus

Abstract

The disclosure provides a cyclone separation device, a dust cup and a cleaning equipment, and belongs to the technical field of cleaning equipment. The cyclone separation device comprises a cyclone separator and a second-stage dust bucket, the cyclone separator comprises a shell, and the second-stage dust bucket comprises a first cover body; the shell is provided with a groove, and the first cover body is provided with a protrusion matched with the groove; the groove comprises an embedding part extending in the axial direction of the flange and a fitting part extending in the circumferential direction of the flange from one side of the embedding part, and a limiting part for limiting the axial displacement of the first cover body relative to the shell is formed between the fitting part and the end face of the flange. The cyclone separation device, the dust cup and the cleaning equipment provided by the disclosure provide a detachable connection structure based on insertion and rotation, the structure design provides a simple detachable connection mode between the second-stage dust bucket and the cyclone separator, the user can complete assembly by pressing and rotating, and vice versa, which has the advantages of simple assembly and rapid disassembly.

Description

Technical Field

[0001] This disclosure belongs to the field of cleaning equipment technology, specifically relating to a cyclone separator, a dust cup, and cleaning equipment. Background Technology

[0002] The dust cup is the core component of a vacuum cleaner, responsible for dust collection, and is widely used in cyclone vacuum cleaners. During vacuuming, the dust-laden airflow typically enters the dust cup tangentially, creating a high-speed rotating vortex within the cup. Under the influence of this rotating airflow, dust particles are thrown against the inner wall of the dust cup by centrifugal force, and then fall to the bottom due to gravity, thus achieving dust-air separation.

[0003] To improve dust removal efficiency, existing vacuum cleaners generally employ a two-stage dust-air separation structure: the first stage primarily intercepts larger solid debris and particles, such as hair and paper scraps; while the second stage, typically a cyclone separator, further separates finer particles and dust from the residual airflow, preventing them from entering the filter and causing blockages or reduced suction power. The cyclone separator usually includes a cyclone separator located in the suction airflow path and a connected second-stage dustbin. The second-stage dustbin is usually contained within the first-stage dustbin. The first-stage dustbin, as the initial collection unit in the dust-air path, receives and initially separates large particles carried in the dust-laden airflow, while the second-stage dustbin collects the finer dust particles after cyclone separation. Utility Model Content

[0004] The purpose of this disclosure is to provide a cyclone separator, dust cup, and cleaning equipment that allows for easy and quick disassembly of the second-stage dust bin, facilitating daily cleaning and maintenance.

[0005] To achieve the above objectives, the technical solution provided in this disclosure is as follows:

[0006] In a first aspect, this disclosure provides a cyclone separator device, comprising a detachably connected cyclone separator and a second-stage dust bin. The cyclone separator includes a housing, and the second-stage dust bin includes a first cover. One end of the housing has a flange protruding toward the second-stage dust bin, and the flange has a groove. The first cover has a protrusion that matches the groove. The groove includes an insert portion extending at least partially axially along the flange and a fitting portion extending at least partially circumferentially along the flange from one side of the insert portion. A limiting portion for restricting axial displacement of the first cover relative to the housing is formed between the fitting portion and the end face of the flange.

[0007] In one or more embodiments, the groove has a sidewall located on the side of the insert portion away from the mating portion, the sidewall extending obliquely from the end face of the flange; the distance from the sidewall to the mating portion gradually decreases along the extending direction of the sidewall.

[0008] In one or more embodiments, the protrusion has a guide ramp on a first end near the sidewall, the guide ramp being parallel to the sidewall.

[0009] In one or more embodiments, the second end of the protrusion away from the sidewall is provided with a first chamfer, the first chamfer being located at the corner of the second end near the limiting portion; and / or the corner of the limiting portion near the embedding portion is provided with a second chamfer.

[0010] In one or more embodiments, the fitting portion is provided with a retaining portion protruding from the bottom surface of the groove, and the protrusion is provided with a recessed portion corresponding to the retaining portion. The retaining portion engages with the recessed portion to restrict the relative rotation between the housing and the first cover.

[0011] In one or more embodiments, a guide portion protrudes from the side of the holding portion near the insert portion, and the protrusion height of the guide portion gradually increases along the direction in which the protrusion engages with the insert portion.

[0012] In one or more embodiments, the flange is annular, and a plurality of grooves are provided on the outer peripheral surface of the flange. A plurality of protrusions corresponding to the grooves are provided on the inner peripheral surface of the first cover. The protrusions protrude radially inward from the inner peripheral surface of the first cover by a predetermined height and extend circumferentially by a predetermined length.

[0013] In one or more embodiments, the housing includes a cylindrical main body and a first stepped portion, the first stepped portion extending axially and radially toward the inner side of the main body from one end of the main body near the first cover, and the flange extending axially toward the first cover from the end of the first stepped portion; the first cover has a second stepped portion at one end near the housing that is structurally complementary to the first stepped portion, and the second stepped portion and the first stepped portion are interlocked.

[0014] In one or more embodiments, the second-stage dust bin further includes a second cover and a filter screen, the filter screen being disposed between the first cover and the second cover, the first cover having a first limiting groove at one end near the filter screen, the second cover having a second limiting groove, and the two ends of the filter screen being respectively embedded in the first limiting groove and the second limiting groove.

[0015] In one or more embodiments, the second cover includes a dust collection bin, a skirt, and a connecting portion. The dust collection bin extends axially into the first cover, the skirt surrounds the outer periphery of the dust collection bin, and the connecting portion extends axially from the outer wall of the skirt toward the first cover. The connecting portion has a buckle portion at one end near the first cover, and the first cover has a slot portion at one end near the second cover. The buckle portion engages with the slot portion.

[0016] In one or more embodiments, the filter screen surrounds the outer periphery of the dust collection bin and is located between the first cover and the skirt, and the second limiting groove is provided on the outer wall of the skirt.

[0017] In one or more embodiments, the dust collection bin extends to form a cone at one end away from the first cover, the skirt surrounds the outer periphery of the cone, the cone is provided with a dust discharge port, and the dust discharge port is provided with a one-way cover that can be opened to the outside of the dust discharge port. The one-way cover has a connecting end and a free end. The connecting end is fixed to the inner wall of the dust discharge port. The one-way cover is partially thinned, and the free end can be flipped relative to the partially thinned part to open or close the dust discharge port.

[0018] Secondly, this disclosure provides a dust cup, which includes the aforementioned cyclone separator and a first-stage dust bin fitted around the periphery of the cyclone separator.

[0019] Thirdly, this disclosure provides a cleaning device including a main unit and the aforementioned dust cup removably disposed on the main unit.

[0020] Compared with existing technologies, the cyclone separator, dust cup, and cleaning equipment provided in this disclosure achieve a detachable connection structure based on insertion and rotation by providing a groove structure with an insert and fitting portion at one end of the cyclone separator housing, and a protrusion matching the groove on the first cover of the second-stage dust bin. This structural design provides a simple detachable connection between the second-stage dust bin and the cyclone separator, allowing users to assemble by pressing and rotating, and disassemble by pressing and rotating, offering advantages of easy assembly and quick disassembly. Based on this connection method, after multiple vacuuming sessions, users can remove the second-stage dust bin to clean the dust, thereby reducing filter clogging and maintaining stable vacuuming efficiency and user experience. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments recorded in this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the cyclone separator in one embodiment of the present disclosure;

[0023] Figure 2 for Figure 1 Exploded view of the cyclone separator;

[0024] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 for Figure 1 Cross-sectional view of the cyclone separator;

[0026] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0027] Figure 6 for Figure 4 Enlarged view of point C in the middle;

[0028] Figure 7 This is a three-dimensional structural diagram of the first cover in one embodiment of the present disclosure;

[0029] Figure 8 for Figure 7 Enlarged diagram of point D in the middle.

[0030] Explanation of key figure labels:

[0031] 1-Cyclone separator, 11-Housing shell, 111-Main body, 112-First step, 12-Flange, 121-Limiting part, 122-Second chamfer, 13-Groove, 131-Embedding part, 132-Fitting part, 133-Side wall, 134-Holding part, 135-Guide part, 2-Second stage dust bin, 21-First cover, 211-Second step, 212-First limiting groove, 213-Slot, 2 2-Protrusion, 221-First end, 222-Second end, 223-Guide slope, 224-First chamfer, 225-Recess, 23-Second cover, 231-Second limiting groove, 232-Dust collection bin, 233-Skirt, 234-Connecting part, 235-Snap-on part, 236-Conical part, 237-Dust discharge port, 24-Filter screen, 25-One-way cover, 251-Connecting end, 252-Free end. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0033] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0034] With the widespread use of vacuum cleaners, cyclone dust collection structures have become the mainstream configuration to improve dust removal efficiency and overall user experience. These devices create a rotating flow field within the dust cup, using centrifugal force to separate dust particles from the airflow, preventing rapid filter clogging. This is a structurally sound and highly efficient dust-air separation method. However, in practical use, traditional cyclone separators generally suffer from a significant problem: their dust collection unit, especially the second-stage dust bin for collecting fine dust, is often complex to connect to the cyclone separator. Users often find it difficult to quickly disassemble and reassemble during routine maintenance, leading to low cleaning efficiency, inconvenience, and a negative impact on the overall user experience. Especially after prolonged use, the fine particles accumulated in the second-stage dust bin, if not cleaned promptly, not only affect the filter's lifespan but may also cause a decrease in suction power or even an increase in motor load.

[0035] This disclosure is based on an analysis of the aforementioned existing problems. The inventors have noted that current industry focus on dust cup functionality is primarily on separation efficiency, with insufficient consideration given to ease of maintenance during use. Therefore, this disclosure aims to optimize the structural connection between the dust bin and the separator while maintaining the basic principles of cyclone separation. Through a simpler and more user-friendly connection method, it enables quick disassembly and repositioning of the dust bin after use, thereby improving equipment maintenance efficiency.

[0036] To achieve the above objectives, this disclosure presents a disassembly and assembly mechanism that differs from traditional connection mechanisms. The overall idea is to improve the fit of the connection structure, enabling tool-free disassembly and assembly of the second-stage dust bin during its connection with the cyclone separator. Specifically, this disclosure introduces a connection mechanism based on axial insertion and circumferential rotational engagement between the cyclone separator housing and the connecting components of the second-stage dust bin. This mechanism achieves rapid assembly and disassembly by setting a limiting structure on the housing and a matching fitting structure on the second-stage dust bin. The limiting structure not only facilitates user alignment and insertion but also ensures a stable connection through rotational locking, preventing loosening during use.

[0037] Please refer to Figures 1 to 5 As shown, a cyclone separator in one embodiment of this disclosure includes a detachably connected cyclone separator 1 and a second-stage dust bin 2. The cyclone separator 1 includes a housing 11, and the second-stage dust bin 2 includes a first cover 21. One end of the housing 11 has a flange 12 protruding toward the second-stage dust bin 2, and the flange 12 has a groove 13. The first cover 21 has a protrusion 22 that matches the groove 13. The groove 13 includes an insert portion 131 that extends at least partially axially along the flange 12 and a fitting portion 132 that extends at least partially circumferentially along the flange 12 from one side of the insert portion 131. A limiting portion 121 is formed between the fitting portion 132 and the end face of the flange 12 to limit the axial displacement of the first cover 21 relative to the housing 11.

[0038] The cyclone separator 1, as the main separation unit of the device, includes a housing 11, within which a cyclone cone (not shown in the attached diagram) is installed. The cyclone cone is the core component for achieving dust-gas separation; its geometry induces a rotating flow field when the airflow is drawn in. After the dust-laden airflow enters the housing 11, it is guided by the cyclone cone to form a high-speed vortex. Dust particles in the airflow are thrown against the inner wall of the cyclone cone under centrifugal force and settle downwards along the inner wall, eventually entering the second-stage dust bin 2 below.

[0039] To enable quick assembly and disassembly and stable connection of the second-stage dustbin 2, one end of the housing 11 is provided with an annular flange 12 protruding toward the second-stage dustbin 2. This flange 12 serves as an assembly positioning reference, and its outer wall is provided with multiple grooves 13. Correspondingly, the first cover 21 of the second-stage dustbin 2 is a cylindrical component, and its inner circumferential surface is provided with multiple protrusions 22 that correspond one-to-one with the positions and dimensions of the aforementioned grooves 13. The protrusions 22 protrude radially inward from the inner circumferential surface of the second-stage dustbin 2, with a moderate protrusion height to ensure a tight fit with the grooves 13, and extend a certain length circumferentially to match the locking area of ​​the fitting part 132.

[0040] During assembly, the user simply inserts the protrusion 22 on the first cover 21 along the groove 13 on the flange 12 of the housing 11. After a general axial insertion stroke (i.e., entering the insert portion 131 of the groove 13, the insertion direction of the protrusion 22 is determined by the specific shape of the insert portion 131), a certain angle of circumferential rotation is performed to allow the protrusion 22 to slide into the fitting portion 132 of the groove 13. A limiting portion 121 is provided between the fitting portion 132 and the end face of the flange 12, which can effectively stop the protrusion 22 axially after rotation, thereby achieving a reliable locking fit between the housing 11 and the first cover 21, preventing loosening during operation and facilitating subsequent disassembly and cleaning operations.

[0041] Specifically, the groove 13 consists of two parts: an insert portion 131 extending generally along the axial direction of the flange 12, and a fitting portion 132 extending generally circumferentially along the flange 12 from one side of the insert portion 131. The insert portion 131 provides initial space for the protrusion 22 to enter, allowing the first cover 21 to generally approach the housing 11 axially; the fitting portion 132 forms a locking area through its circumferential extension. When the first cover 21 rotates, the protrusion 22 slides from the insert portion 131 into the fitting portion 132, engaging with the limiting portion 121 formed by the end face of the flange 12 on one side of the fitting portion 132, thus restricting the axial displacement of the first cover 21 and locking the second-stage dust bin 2 onto the cyclone separator 1. For disassembly, simply rotate the first cover 21 in the opposite direction to return the protrusion 22 to the insert portion 131, and then pull it out in the opposite direction of insertion to complete the separation. This generally axial insert-and-circumferential-rotation connection mechanism is simple to operate and greatly improves the ease of disassembly.

[0042] In one exemplary embodiment, please refer to Figure 3 As shown, the groove 13 has a sidewall 133 located on the side of the insert portion 131 away from the fitting portion 132, and the sidewall 133 extends obliquely from the end face of the flange 12; along the extending direction of the sidewall 133, the distance from the sidewall 133 to the fitting portion 132 gradually decreases.

[0043] The sidewall 133 is located on the side of the insert 131 away from the fitting portion 132. As the boundary structure of the groove 13, it has a guiding and buffering function, optimizing the insertion process of the protrusion 22. The sidewall 133 extends inward from the end face of the flange 12 in an inclined direction, that is, it is arranged in a gradually tapering manner at a certain angle. Along the extension direction of the sidewall 133, the distance between it and the fitting portion 132 gradually decreases, forming a gradually narrowing spatial transition structure. Due to the inclined sidewall 133, the opening of the groove 13 entrance is wider, and the user does not need excessively high precision when aligning the protrusion 22 of the first cover 21.

[0044] When the user aligns the first cover 21 with the housing 11, the protrusion 22 must first be aligned and inserted into the embedding part 131 of the groove 13. Since there may be angular deviations or positional errors during operation, if the groove 13 has a uniform cross-section or straight wall structure, it can easily lead to jamming or difficulty in alignment of the protrusion 22 during insertion. However, by setting an inclined sidewall 133, even if the protrusion 22 is not completely aligned during initial alignment, it can be guided by the inclined sidewall 133 after gradually contacting it, allowing it to slide into the correct position and smoothly enter the embedding part 131.

[0045] Specifically, please refer to Figure 8 As shown, a guide ramp 223 is provided on the first end 221 of the protrusion 22 near the side wall 133, and the guide ramp 223 is parallel to the side wall 133. During assembly, the user usually aligns it axially and pushes it in, and then rotates it circumferentially to make the protrusion 22 fit into the groove 13 to complete the locking. If the front end of the protrusion 22 is a flat structure, once there is a slight axial or radial misalignment between it and the groove 13, interference, obstruction or jamming may easily occur in the initial stage of assembly. To this end, by providing a guide ramp 223 at the front end of the protrusion 22, when the protrusion 22 comes into contact with the inclined side wall 133 at the entrance of the groove 13, the ramp makes sliding contact with the ramp, guiding the protrusion 22 to automatically adjust its own posture, so that it gradually aligns with the insertion part 131 of the groove 13, and thus slides in smoothly.

[0046] Further, please refer to Figure 3 and Figure 8 As shown, the second end 222 of the protrusion 22 away from the sidewall 133 is provided with a first chamfer 224, which is located at the corner of the second end 222 near the limiting part 121; the limiting part 121 is provided with a second chamfer 122 at the corner of the end near the insertion part 131. In order to optimize the smoothness of assembly and anti-interference ability between the protrusion 22 and the groove 13 structure, especially during the rotation assembly stage, the protrusion 22 is guided to smoothly enter the fitting part 132, while avoiding jamming or local stress concentration caused by the meshing of the structural edges. A chamfer structure with rounded transition is introduced at the key corners.

[0047] Specifically, the second end 222 of the protrusion 22, i.e., the side away from the guide sidewall 133, has a first chamfer 224 in the corner area near the limiting part 121. This chamfer adopts a rounded transition design, so that the edge of the protrusion 22 is no longer an acute angle or a right angle, but transitions into a smooth curved surface, which has a good guiding and buffering effect. At the same time, the transition area between the fitting part 132 and the embedded part 131 in the groove 13, i.e., the end of the limiting part 121 near the embedded part 131, also has a second chamfer 122 corresponding to the first chamfer 224 of the protrusion 22. It is also arranged in the corner area of ​​the junction of the structure in a rounded transition form.

[0048] The two chamfered structures form a mutually facing fit in space, which can avoid edge interference or biting when the protrusion 22 rotates into the fitting part 132. Since the force and angle of the user rotating the first cover 21 may fluctuate during the assembly process, if the edge transition between the turning part of the groove 13 and the tail of the protrusion 22 is not properly handled, it may cause jamming, surface scratches, or even structural damage caused by material stress concentration. By setting the arc-shaped first chamfer 224, the protrusion 22 can transition by rolling or sliding when entering the turning point of the limiting part 121, and is naturally guided into the fitting part 132 by the change of the curvature of the contact surface; while the second chamfer 122 on the limiting part 121 provides a larger receiving space and contact containment, and can form a sliding adjustment even if the operating angle is not completely aligned, thereby ensuring smooth assembly.

[0049] In one exemplary embodiment, please refer to Figure 3 and Figure 8 As shown, at least one groove 13 on the flange 12 has a retaining portion 134 protruding from the bottom surface of the groove 13 in the fitting portion 132. The protrusion 22 corresponding to the groove 13 has a recess 225 corresponding to the retaining portion 134. The retaining portion 134 and the recess 225 engage to restrict the relative rotation between the housing 11 and the first cover 21.

[0050] To further enhance the connection stability between the first cover 21 and the cyclone separator housing 11, and to prevent relative rotation due to vibration or airflow impact during equipment operation, a protruding retaining part 134 is provided on the bottom surface of the fitting part 132 of the groove 13 in the structural design. Correspondingly, the protrusion 22 on the first cover 21 is provided with a recess 225 that matches the retaining part 134. The retaining part 134 and the recess 225 are arranged opposite to each other in the structure. When the protrusion 22 is inserted along the insertion part 131 and rotates into the fitting part 132 with the first cover 21, the retaining part 134 will align with the recess 225 and engage, thereby achieving mechanical locking of the rotation direction.

[0051] When the equipment is running at high speed or under sudden changes in suction, the pulsating airflow or mechanical vibration generated inside may be transmitted to the connecting part 234 of the second-stage dustbin 2. If the circumferential direction is not constrained, the protrusion 22 may undergo slight displacement within the fitting groove due to inertia, leading to loosening or accidental dislocation, affecting the dustbin's sealing performance and the equipment's operational stability. This potential rotational slippage is effectively blocked by the structural engagement between the retaining part 134 and the recessed part 225.

[0052] The retaining part 134 is preferably located at the end of the rotation path of the fitting part 132. Its shape can be designed as a hemispherical or beveled protrusion so that during assembly, when the protrusion 22 rotates in, it can overcome the resistance of the retaining part 134 and slide smoothly through. After reaching the final position, it is engaged in the recess 225, thereby forming a stable one-way self-locking state. The corresponding recess 225 is recessed into the surface of the protrusion 22, and the matching of structural depth and width achieves a tight engagement, preventing loosening.

[0053] Specifically, please refer to Figure 3 As shown, a guide portion 135 protrudes from the side of the holding portion 134 near the insert portion 131. The protrusion height of the guide portion 135 gradually increases along the direction in which the protrusion 22 and the insert portion 132 engage. The guide portion 135 is a sloping protrusion extending along the engagement direction of the protrusion 22 and the insert portion 132. Its height is lower at the starting end near the insert portion 131, gradually increases along the circumferential rotation direction, and finally transitions to a height slightly less than that of the holding portion 134.

[0054] During assembly, when the protrusion 22 of the first cover 21 is inserted from the insert portion 131 and rotates circumferentially into the fitting portion 132, the protrusion 22 needs to pass over the retaining portion 134 to complete the final rotational locking. If the retaining portion 134 is a steep protrusion, and the protrusion 22 directly contacts its front, a large force is required to press it over, which can easily cause assembly jamming, structural wear, or even deformation. However, by providing a gradually rising guide portion 135 in front of the retaining portion 134, the protrusion 22 first forms a gradual contact with the guide slope 223 during rotation, slides up along the slope, gradually climbs to the top of the retaining portion 134, and finally passes over the retaining portion 134 to enter the subsequent stable positioning area. In this process, the guide portion 135 provides a buffer uphill section, which greatly reduces the operating resistance during the user's assembly process, while protecting the edge structure of the protrusion 22 and the retaining portion 134 and extending their service life.

[0055] In one exemplary embodiment, please refer to Figure 4 , Figure 5 and Figure 7 As shown, the housing 11 includes a cylindrical main body 111 and a first stepped portion 112. The first stepped portion 112 extends axially and radially toward the inside of the main body 111 from one end of the main body 111 near the first cover 21. The flange 12 extends axially toward the first cover 21 from the end of the first stepped portion 112. The first cover 21 is provided with a second stepped portion 211 at one end near the housing 11, which is structurally complementary to the first stepped portion 112. The second stepped portion 211 and the first stepped portion 112 are interlocked to limit the radial displacement of the first cover 21 relative to the housing 11.

[0056] Specifically, the housing 11 is composed of an integrally formed cylindrical main body 111, with an inwardly offset first step 112 at one end near the first cover 21. This first step 112 extends axially from the inner wall of the main body 111 for a certain distance before turning radially inward. The first step 112 has at least one stepped structure formed by alternating axial and radial extensions, and finally forms an axially protruding flange 12 at its end, serving as the base for the rotating snap-fit ​​structure. Correspondingly, the lower end of the first cover 21 also has a second step 211 whose structural form matches the geometry of the first step 112. This second step 211 can be fitted into the first step 112 from the outside in during assembly, forming a dual axial and radial positioning fit between the two components.

[0057] By adopting this stepped structural fit, on the one hand, the first step 112 defines the radial envelope of the first cover 21, preventing lateral displacement after assembly; on the other hand, the increased contact surface of the stepped fit improves the structural support strength of the connection area and enhances the load-bearing capacity during rotational separation. Furthermore, this stepped fitting structure also possesses a self-aligning function. During assembly, due to the presence of the stepped structure, the first cover 21 can smoothly slide into the fitting position as it approaches the shell 11, reducing docking difficulties caused by human alignment deviations.

[0058] In one exemplary embodiment, please refer to Figure 1 , Figure 2 and Figure 4 As shown, the second-stage dust bin 2 also includes a second cover 23 and a filter screen 24. The filter screen 24 is located between the first cover 21 and the second cover 23. The first cover 21 has a first limiting groove 212 at one end near the filter screen 24, and the second cover 23 has a second limiting groove 231. The two ends of the filter screen 24 are respectively embedded in the first limiting groove 212 and the second limiting groove 231.

[0059] The filter screen 24 is positioned between the first cover 21 and the second cover 23, forming an intermediate filter layer between the cyclone channel and the first-stage dust bin to block large particles in the dust-laden airflow. To ensure the structural stability of the filter screen 24 under high suction power and long-term use, the device is designed with a double limiting mechanism. The first cover 21 has a first limiting groove 212 for embedding and fixing at the end near the filter screen 24, while the second cover 23 has a corresponding second limiting groove 231. Both ends of the entire filter screen 24 are firmly embedded in these two limiting grooves, forming a stable annular positioning structure.

[0060] This double-end limiting structure not only guides and positions the filter screen 24 during installation, but also prevents it from shifting, warping, or loosening due to airflow impact or structural vibration during actual use. The first limiting groove 212 is preferably a groove-shaped annular structure with a certain depth and width, which can match the structure of the edge of the filter screen 24 to achieve a fitting.

[0061] Specifically, please refer to Figure 2 , Figure 4 and Figure 6 As shown, the second cover 23 includes a dust collection bin 232, a skirt 233, and a connecting part 234. The dust collection bin 232 extends axially into the first cover 21. The skirt 233 surrounds the outer periphery of the dust collection bin 232. The connecting part 234 extends axially from the outer wall of the skirt 233 toward the first cover 21. The end of the connecting part 234 near the first cover 21 is provided with a buckle part 235. The end of the first cover 21 near the second cover 23 is provided with a slot part 213. The buckle part 235 engages with the slot part 213.

[0062] The dust collection bin 232 is a cylindrical component extending into the first cover 21, serving as the main holding space for collecting dust particles after cyclone separation. Its top is connected to the cyclone cone of the cyclone separator 1, and its bottom is provided with a dust discharge port 237. The skirt 233 is arranged around the outer periphery of the dust collection bin 232, and its structural height is slightly higher than the dust discharge port 237, which serves to prevent the garbage in the first-stage dust bin from moving upward.

[0063] The connecting portion 234 is a strip-shaped structure extending axially toward the first cover 21, with a snap-fit ​​portion 235 having a certain elastic deformation capability at its end near the first cover 21. Correspondingly, the first cover 21 has a corresponding slot portion 213 at its lower end near the second cover 23, matching the snap-fit ​​portion 235. This slot portion 213 can be an annular notch or multiple distributed notches, allowing the snap-fit ​​portion 235 to elastically deform and smoothly embed during insertion. During assembly, as the snap-fit ​​portion 235 aligns with the slot portion 213, the snap-fit ​​portion 235 expands outward under assembly force. After passing the edge of the slot portion 213, the snap-fit ​​structure regains its elasticity and snaps into the slot, thus completing the locking process.

[0064] Further, please refer to Figure 2 and Figure 4 As shown, the filter screen 24 surrounds the outer periphery of the dust collection bin 232 and is located between the first cover 21 and the skirt 233. The second limiting groove 231 is provided on the outer wall of the skirt 233. The filter screen 24 has a cylindrical structure and is installed around the outer periphery of the dust collection bin 232 to prevent large particles from entering the second-stage dust bin 2.

[0065] In one exemplary embodiment, please refer to Figure 4As shown, the dust collection bin 232 extends to form a cone 236 at the end away from the first cover 21, and a skirt 233 surrounds the outer periphery of the cone 236. The cone 236 is provided with a dust discharge port 237. A one-way cover 25 that can be opened to the outside of the dust discharge port 237 is provided at the dust discharge port 237. The one-way cover 25 has a connecting end 251 and a free end 252. The connecting end 251 is fixed to the inner wall of the dust discharge port 237. The one-way cover 25 is partially thinned. The free end 252 can be flipped relative to the partially thinned part to open or close the dust discharge port 237.

[0066] To achieve smoother dust particle settling and convenient dust removal, the dust collection bin 232 is designed with a downwardly tapered extension structure at the end furthest from the first cover 21, forming a cone 236. This cone 236 structure is geometrically contracted, providing a good concentrated deposition effect, allowing dust particles to naturally gather at the bottom of the bin under the combined action of their own gravity and centrifugal force, avoiding dispersion, accumulation, or floating and interference with the airflow path.

[0067] A skirt 233 is provided around the outer side of the cone 236. The skirt 233 is coaxially arranged with the cone 236, forming a protective outer cover. At the bottom end of the cone 236, a dust outlet 237 is provided. This dust outlet 237 serves as the dust outlet channel after dust collection, allowing dust particles to be discharged during manual or automated cleaning. To prevent airflow or dust from leaking back during vacuuming and to ensure the unidirectional nature of the cleaning operation, a one-way cover 25 is provided at the dust outlet 237. This cover has both automatic closing and external force opening functions.

[0068] One end of the one-way cover 25 is a connecting end 251, which can be fixed to the inner wall of the dust outlet 237 by screws, clips, or integral molding, so that the cover can only rotate around the fixed point. The cover body is made of flexible material, and a locally thinned structure is set between the connecting end 251 and the free end 252. This thinned part forms a flexible hinge, allowing the cover to bend locally under external force or air pressure. When the vacuum cleaner is running, the dust collection bin 232 is in a negative pressure state. The one-way cover 25 automatically adheres and closes to the dust outlet 237 under the action of the internal and external air pressure difference, forming a sealed state to prevent dust from blowing back or air leakage. When the user needs to clean the dust in the bin, he only needs to remove the dust collection bin 232 and gently push it open along the direction of the free end 252 of the cover to open the dust outlet 237 and complete the garbage emptying process. The operation is simple and quick.

[0069] In one embodiment of this disclosure, a dust cup is also provided. The dust cup is composed of a two-stage dust-gas separation unit, which includes the aforementioned cyclone separation device, specifically including a built-in cyclone separation device and a first-stage dust bin sleeved outside the device.

[0070] The cyclone separator is the core working unit of the dust cup. It contains a cyclone separator and a second-stage dust bin, which are used for cyclone separation and dust collection of fine dust particles. The first-stage dust bin is wrapped around the cyclone separator. As the first-stage processing unit in the dust-air path, it is mainly used to receive and initially separate large particles of debris such as hair, debris, and sand carried in the airflow.

[0071] In terms of structural configuration, the first-stage dust bin forms an annular cavity with the cyclone separator, allowing the inhaled dust-laden airflow to be tangentially guided and large particles to settle, thus filtering out large particles and preventing them from directly entering the cyclone cavity and affecting the stability of the cyclone or causing structural wear. The treated airflow is then guided into the internal cyclone cone area for secondary fine separation, where fine dust is thrown towards the cone part of the second-stage dust bin and settles under the action of the cyclone force.

[0072] In one embodiment of this disclosure, a cleaning device is also provided, comprising a main unit and a detachable dust cup mounted on the main unit. The main unit, serving as the power and control core of the cleaning device, integrates basic modules such as a motor, fan, battery pack, and control circuitry to provide suction drive, energy supply, and system operation control. The dust cup, serving as a functional module for dust collection and separation, is detachably installed at the suction port of the main unit, forming the initial segment of the airflow path.

[0073] In summary, the cyclone separator, dust cup, and cleaning device provided in this disclosure achieve a detachable connection structure based on insertion and rotation by providing a groove structure with an insert and fitting portion at one end of the cyclone separator housing, and a protrusion matching the groove on the first cover of the second-stage dust bin. This structural design provides a simple detachable connection between the second-stage dust bin and the cyclone separator, allowing users to assemble by pressing and rotating, and disassemble by pressing and rotating, offering advantages of easy assembly and quick disassembly. Based on this connection method, after multiple vacuuming sessions, users can remove the second-stage dust bin to clean the dust, thereby reducing filter clogging and maintaining stable vacuuming efficiency and user experience.

[0074] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0075] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cyclone separator, characterized in that, The device includes a detachably connected cyclone separator and a second-stage dust bin, wherein the cyclone separator includes a housing and the second-stage dust bin includes a first cover. One end of the housing has a flange protruding toward the second dustbin, and the flange has a groove. The first cover has a protrusion that matches the groove. The groove includes an insert portion extending at least partially axially along the flange and a fitting portion extending at least partially circumferentially along the flange from one side of the insert portion, wherein a limiting portion for limiting axial displacement of the first cover relative to the housing is formed between the fitting portion and the end face of the flange.

2. The cyclone separator according to claim 1, characterized in that, The groove has a sidewall located on the side of the insert portion away from the fitting portion, the sidewall extending obliquely from the end face of the flange; along the extending direction of the sidewall, the distance from the sidewall to the fitting portion gradually decreases.

3. The cyclone separator according to claim 2, characterized in that, The first end of the protrusion near the sidewall is provided with a guide slope, which is parallel to the sidewall.

4. The cyclone separator according to claim 3, characterized in that, The second end of the protrusion away from the sidewall is provided with a first chamfer, the first chamfer being located at the corner of the second end near the limiting part; and / or The limiting part has a second chamfer at one corner near the embedded part.

5. The cyclone separator according to claim 1, characterized in that, The fitting part is provided with a retaining part protruding from the bottom surface of the groove, and the protrusion is provided with a recessed part corresponding to the retaining part. The retaining part and the recessed part engage to restrict the relative rotation between the housing and the first cover.

6. The cyclone separator according to claim 5, characterized in that, The retaining part has a guide part protruding on the side near the embedding part, and the protrusion height of the guide part gradually increases along the direction in which the protrusion and the fitting part are fitted.

7. The cyclone separator according to claim 1, characterized in that, The flange is annular, and a plurality of grooves are provided on the outer peripheral surface of the flange. A plurality of protrusions corresponding to the grooves are provided on the inner peripheral surface of the first cover. The protrusions protrude radially inward from the inner peripheral surface of the first cover to a predetermined height and extend circumferentially to a predetermined length.

8. The cyclone separator according to claim 1, characterized in that, The housing includes a cylindrical main body and a first stepped portion. The first stepped portion extends axially and radially toward the inner side of the main body from one end of the main body near the first cover. The flange extends axially toward the first cover from the end of the first stepped portion. The first cover has a second stepped portion that is structurally complementary to the first stepped portion at one end near the housing. The second stepped portion and the first stepped portion are interlocked.

9. The cyclone separator according to claim 1, characterized in that, The second-stage dust bin also includes a second cover and a filter screen. The filter screen is disposed between the first cover and the second cover. The first cover has a first limiting groove at one end near the filter screen, and the second cover has a second limiting groove. The two ends of the filter screen are respectively embedded in the first limiting groove and the second limiting groove.

10. The cyclone separator according to claim 9, characterized in that, The second cover includes a dust collection bin, a skirt, and a connecting part. The dust collection bin extends axially into the first cover. The skirt surrounds the outer periphery of the dust collection bin. The connecting part extends axially from the outer wall of the skirt toward the first cover. The connecting part has a buckle at one end near the first cover. The first cover has a slot at one end near the second cover. The buckle engages with the slot.

11. The cyclone separator according to claim 10, characterized in that, The filter screen surrounds the outer periphery of the dust collection bin and is located between the first cover and the skirt. The second limiting groove is provided on the outer wall of the skirt.

12. The cyclone separator according to claim 10, characterized in that, The dust collection bin extends to form a cone at one end away from the first cover. The skirt surrounds the outer periphery of the cone. The cone is provided with a dust discharge port. The dust discharge port is provided with a one-way cover that can be opened to the outside of the dust discharge port. The one-way cover has a connecting end and a free end. The connecting end is fixed to the inner wall of the dust discharge port. The one-way cover is partially thinned. The free end can be flipped relative to the partially thinned part to open or close the dust discharge port.

13. A dust cup, characterized in that, The device includes the cyclone separator according to any one of claims 1 to 12, and a first-stage dust bin fitted around the periphery of the cyclone separator.

14. A cleaning device, characterized in that, It includes a main unit and a detachable dust cup as described in claim 13, which is mounted on the main unit.

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