Water tank and cleaning equipment

Abstract

The invention provides a water tank and cleaning equipment, and belongs to the field of cleaning equipment. The water tank comprises a tank body, a sewage suction pipeline and a winding assembly, the box body is provided with a solid-liquid separation cavity for separating solid-state dirt from liquid-state dirt; the dirt suction pipeline is arranged on the box body and communicates with the solid-liquid separation cavity, and dirt can enter the solid-liquid separation cavity through the dirt suction pipeline under the action of sucked air flow; the winding assembly is arranged on a suction path where dirt enters the solid-liquid separation cavity through the dirt suction pipeline, the winding assembly comprises an impeller capable of rotating under the action of suction airflow, and the impeller can wind fibrous dirt sucked along with the suction airflow when rotating. According to the water tank and the cleaning equipment provided by the invention, a winding traction effect can be applied to fibrous dirt such as hair, so that the fibrous dirt is more easily captured and gathered into a bundle in the process of entering the water tank, the residual probability of the fibrous dirt at the inlet of the dirt suction pipeline is reduced, and the suction effect is improved.

Description

TECHNICAL FIELD

[0001] The present disclosure belongs to the technical field of cleaning equipment, and particularly relates to a water tank and a cleaning equipment. BACKGROUND

[0002] In the existing cleaning equipment, a water tank is usually provided for the cleaning accessory to collect and store the dirt and sewage generated in the wet cleaning process. In order to facilitate the entry of dirt into the water tank and reduce the risk of residue in the interior of the cleaning head, the industry generally provides a dirt suction pipeline on the water tank, which is in communication with the dirt suction channel of the cleaning equipment, so that the suction airflow formed by the main machine or the negative pressure unit can suction the ground dirt, sewage and hair and other impurities into the water tank, and the preliminary separation and accommodation of the solid dirt and the liquid dirt are completed in the interior of the water tank.

[0003] However, in actual use scenarios, the floor cleaning operation is often accompanied by continuous suction of fiber-like dirt such as hair, thread and fiber scraps. Such dirt has the characteristics of different lengths, great flexibility, easy entanglement and easy hitching, and is prone to shape stretching and swinging during airflow traction, so that it is attached and retained at the key position of the suction path. SUMMARY

[0004] In the process of suctioning hair by the existing water tank of the cleaning accessory, hair residues are easily generated at the inlet of the dirt suction pipeline of the water tank, and the common performance is that part of the hair is located outside the inlet of the dirt suction pipeline, and the other part enters the interior of the dirt suction pipeline, forming a half-suction state. Due to the friction and hitching of the hair at the edge of the inlet with the structural member, and the softness and easy bending of the hair body, the traction force of the airflow on the hair is difficult to completely bring it into the interior of the pipeline in a short time, so that the suction process is not complete, and further causes poor suction effect.

[0005] This residue phenomenon not only causes the hair to be repeatedly pulled and swung at the inlet position, affecting the smoothness of the subsequent dirt flow, but also may cause the hair to gradually gather and interweave at the inlet, forming a local hitching edge or hitching bridge structure, and further increasing the flow resistance of the dirt suction path.

[0006] Based on the above analysis, the purpose of the present disclosure is to provide a water tank and a cleaning equipment which can reduce the probability of hair residues outside the dirt suction pipeline of the water tank in the process of dirt suction of the water tank.

[0007] To achieve the above purpose, the technical scheme provided by the present disclosure is as follows:

[0008] In a first aspect, the present disclosure provides a water tank, comprising a tank body, a suction pipe and a winding assembly; the tank body has a solid-liquid separation cavity for separating solid waste and liquid waste; the suction pipe is arranged in the tank body and communicates with the solid-liquid separation cavity, under the action of suction airflow, the waste can enter the solid-liquid separation cavity through the suction pipe; the winding assembly is arranged on the suction path of the waste entering the solid-liquid separation cavity through the suction pipe, the winding assembly comprises an impeller which can rotate under the action of suction airflow, and the impeller can wind the fibrous waste sucked by the suction airflow when rotating. By arranging the impeller which can be driven to rotate by the suction airflow on the suction path of the waste entering the solid-liquid separation cavity, the fibrous waste such as hair is wound and pulled, and the probability of half-suction residual of the fibrous waste such as hair is reduced.

[0009] In one or more embodiments, the winding assembly comprises a base which is detachably connected with the tank body or the suction pipe, and the impeller is rotatably arranged in the base. The detachable connection of the base with the tank body or the suction pipe and the rotatable arrangement of the impeller in the base modularize the winding assembly, facilitate the removal and cleaning of the wound waste, and reduce the maintenance difficulty.

[0010] In one or more embodiments, the base is fixedly provided with a rotating shaft, the impeller is provided with a shaft sleeve which is adapted to the rotating shaft, and the shaft sleeve is rotatably sleeved on the rotating shaft. The coaxial rotation of the rotating shaft and the shaft sleeve provides the impeller with a rotation axis and stable support, so that the impeller is more easily started and kept rotating stably.

[0011] In one or more embodiments, a bearing is arranged between the rotating shaft and the shaft sleeve, and the bearing comprises an inner ring and an outer ring which can rotate relative to each other, the inner ring is fixedly connected with the rotating shaft, and the outer ring is fixedly connected with the shaft sleeve. The arrangement of the bearing between the rotating shaft and the shaft sleeve and the fixed relationship between the inner ring and the outer ring reduce the risk of rotation friction and jamming, and improve the coaxiality and durability.

[0012] In one or more embodiments, the shape of the impeller is frustoconical, and the outer diameter of the impeller gradually decreases in the direction away from the base along the axis of the impeller. The frustoconical shape of the impeller and the gradual decrease of the outer diameter in the direction away from the base are conducive to guiding and gathering the fibrous waste during rotation and reducing the tendency of accumulation and blockage.

[0013] In one or more embodiments, the impeller comprises a plurality of blades arranged along the circumference of the impeller, and the windward surface of the blade is at least partially located on the flow path of the suction airflow, so that the suction airflow can act on the windward surface of the blade to form a driving force for rotating the impeller. Through the arrangement of the circumferential blades and the windward surface on the airflow path, the effective work and driving torque of the suction airflow on the impeller are enhanced, and the starting property and continuous rotation stability of the impeller are improved.

[0014] In one or more embodiments, at least part of the outer side of the blade is provided with a brush portion protruding radially outwardly along the impeller, the brush portion comprising a plurality of bristles arranged in an axial direction along the impeller. The blade outer side is provided with a radially outwardly protruding brush portion, which can improve the ability to capture, adhere and drive fibrous dirt such as hair.

[0015] In one or more embodiments, the solid-liquid separation chamber is provided with an air inlet communicating with the dirt suction duct, the winding assembly is arranged in the solid-liquid separation chamber and is arranged adjacent to the air inlet, and the air inlet is provided with a flow guide portion for guiding the suction airflow to flow tangentially to the impeller. The winding assembly is arranged in the solid-liquid separation chamber and adjacent to the air inlet, and the airflow is guided by the flow guide portion to act tangentially on the impeller, which can improve the efficiency of the pneumatic drive and effectively wind the fibrous dirt at the initial stage of entering the solid-liquid separation chamber.

[0016] In one or more embodiments, the tank is provided with a dirt suction opening communicating with the dirt suction duct, the winding assembly is arranged in the dirt suction duct and is arranged adjacent to the dirt suction opening, the dirt suction duct is provided with an interface adapted to the winding assembly, and the winding assembly is detachably arranged in the interface. The winding assembly is arranged in the dirt suction duct and is arranged adjacent to the dirt suction opening, and is detachably installed through the interface, so that the fibrous dirt is pre-wound at the upstream stage of entering the water tank, the residual dirt suction opening / entrance area is inhibited, and maintenance and replacement are facilitated.

[0017] In one or more embodiments, the water tank further comprises a negative pressure channel for communicating the negative pressure unit with the solid-liquid separation chamber, and the negative pressure provided by the negative pressure unit is transmitted to the solid-liquid separation chamber and the dirt suction duct through the negative pressure channel to form the suction airflow. The negative pressure channel is arranged to communicate the negative pressure unit with the solid-liquid separation chamber, so that the negative pressure is more stably transmitted to the solid-liquid separation chamber and the dirt suction duct, which is conducive to quickly establishing and maintaining the suction airflow.

[0018] In one or more embodiments, the solid-liquid separation chamber is provided with a solid-liquid separation member, and the solid-liquid separation member is used for solid-liquid separation of the dirt sucked into the solid-liquid separation chamber through the dirt suction duct. The solid-liquid separation member is arranged in the solid-liquid separation chamber to perform solid-liquid separation on the mixed dirt entering the solid-liquid separation chamber, which can reduce the risk of blockage caused by the migration of solid dirt with the airflow.

[0019] In one or more embodiments, the side wall and / or the bottom wall of the solid-liquid separation piece is provided with a filtering hole for filtering solid dirt; and / or the bottom of the solid-liquid separation piece is provided with a support portion supported on the bottom wall of the solid-liquid separation cavity to form a spacing space for containing sewage between the bottom wall of the solid-liquid separation piece and the bottom wall of the solid-liquid separation cavity. The filtering hole is used to achieve the interception of solid dirt and the discharge of sewage, and the support portion is used to form the spacing space for containing sewage, so that the sewage containing is more stable and less splashing and entrainment.

[0020] In a second aspect, the present disclosure provides a cleaning device, which comprises a main machine, a cleaning head, and the aforementioned water tank, the water tank being detachably mounted on the cleaning head, and the main machine comprising a negative pressure unit for providing negative pressure to the water tank and the cleaning head. The aforementioned water tank is integrated into the cleaning device comprising the main machine and the cleaning head, and the main machine negative pressure unit simultaneously provides negative pressure to the water tank and the cleaning head, thereby ensuring that the air flow of the whole machine is stable, and the cleaning performance of the fiber-shaped dirt suction and collection can be improved.

[0021] The water tank and the cleaning device provided by the present disclosure are characterized in that the winding assembly is arranged on the suction path of the water tank, so that the air flow drives the impeller of the winding assembly to rotate while guiding the dirt into the solid-liquid separation cavity through the dirt suction pipeline, thereby continuously winding and pulling the fiber-shaped dirt such as hair, so that the fiber-shaped dirt is more easily captured and gathered into a bundle during the process of entering the water tank, the probability of the fiber-shaped dirt remaining at the entrance of the dirt suction pipeline is reduced, and the suction effect is improved. Since the fiber-shaped dirt is reduced, the local resistance of the suction path is less likely to increase, the suction force attenuation and suction fluctuation caused by the accumulation of hair hanging on the edge can be reduced, which helps to keep the dirt continuously and smoothly entering the water tank, thereby improving the overall cleaning effect and use experience of the cleaning device in the hair-containing working condition. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments described in the present disclosure, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0023] Figure 1 Structure schematic diagram of the water tank in an embodiment of the present disclosure;

[0024] Figure 2 Structure schematic diagram of the water tank in an embodiment of the present disclosure;

[0025] Figure 3 Structure schematic diagram of the water tank in an embodiment of the present disclosure; Figure 2 Cross-sectional view of the water tank in the embodiment shown;

[0026] Figure 4 For Figure 2 Structure diagram of the winding assembly in the embodiment shown in FIG. 1;

[0027] Figure 5 For Figure 2 Sectional view of the winding assembly in the embodiment shown in FIG. 1;

[0028] Figure 6 Structure diagram of the solid-liquid separation member in an embodiment of the present disclosure;

[0029] Figure 7 Structure diagram of part of the water tank in another embodiment of the present disclosure;

[0030] Figure 8 For Figure 7 Exploded diagram of the siphon pipe and the winding assembly in the embodiment shown in FIG. 1.

[0031] Explanation of main reference signs:

[0032] 1 - tank, 11 - solid-liquid separation chamber, 111 - air inlet, 12 - siphon inlet, 2 - siphon pipe, 21 - interface, 3 - winding assembly, 31 - impeller, 311 - shaft sleeve, 312 - blade, 313 - windward surface, 32 - base, 33 - rotating shaft, 34 - bearing, 35 - brush part, 351 - brush hair, 4 - flow guide part, 5 - negative pressure channel, 6 - solid-liquid separation member, 61 - filter hole, 62 - support part, 7 - spacing space. DETAILED DESCRIPTION

[0033] In order to make the person skilled in the art better understand the technical solutions in the present disclosure, the technical solutions in the embodiments of the present disclosure will be described clearly and completely below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present disclosure.

[0034] Unless otherwise explicitly stated, in the entire specification and claims, the term “comprise” or its variants such as “contain” or “include” and the like will be understood to include the stated element or component, without excluding other elements or components.

[0035] It is to be understood that where an element such as a layer, region or substrate is described as being "on" another element, it can be directly on the other element or intervening elements can also be present. Where an element such as a layer, region or substrate is described as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. In the embodiments shown in the figures, the direction of the various components in the figures is relative, and is used to explain the structure and movement of the different components in the disclosure. These indications are appropriate when the components are in the positions shown in the figures. However, if the position of the components changes, it is considered that these indications will also change accordingly.

[0036] In the wet cleaning scene, the floor cleaning accessory usually needs to suck the ground dirt, sewage and fibrous impurities such as hair into the water tank for collection under the action of negative pressure suction. After analyzing the suction path and the shape characteristics of the dirt of the existing products, the inventor found that the key to unstable cleaning effect is not always insufficient negative pressure capacity, but often appears in the entering way of fibrous dirt at the key position of the suction path.

[0037] Fibrous dirt is soft, slender and easy to bend, and is easy to hitch and rub with the edge of the inlet during air flow traction, forming a semi-suction state of partial entry and partial retention. Once such residues occur, subsequent dirt will further entangle and adhere with the residual fibrous dirt, increasing the suction resistance and fluctuating the suction efficiency, thereby causing poor cleaning effect and increasing the maintenance frequency.

[0038] Based on the above understanding, the technical implementation idea of the present disclosure is to change the fibrous dirt from the state of being passively dragged into the suction airflow to the state of being wrapped and dragged during the suction process, so as to reduce the probability of fibrous dirt hitching, hanging and semi-suction residue at the water tank inlet position.

[0039] Specifically, the technical solution provided by the present disclosure utilizes the suction airflow formed by the cleaning equipment to construct a structural unit on the suction path that can convert the kinetic energy of the suction airflow into a wrapping action, so that the structural unit generates continuous wrapping traction under the action of the suction airflow, and applies the wrapping traction to the fibrous dirt on the suction path. In this way, the fibrous dirt can be captured and gradually gathered during the suction process, avoiding hitching with the edge of the water tank inlet in a loose and dragging form, thereby inhibiting the incomplete suction phenomenon of partial entry and partial retention of fibrous dirt such as hair.

[0040] Please refer to Figure 1 , Figure 2 , Figure 7 and Figure 8As shown, the water tank in an embodiment of the present disclosure includes a tank body 1, a suction pipe 2 and a winding assembly 3; the tank body 1 has a solid-liquid separation cavity 11 for separating solid waste and liquid waste; the suction pipe 2 is arranged on the tank body 1 and is used to connect the suction passage of the cleaning head of the cleaning equipment and the solid-liquid separation cavity 11, under the action of the suction airflow, the waste can enter the solid-liquid separation cavity 11 from the suction passage of the cleaning head through the suction pipe 2; the winding assembly 3 is arranged on the suction path (including the space through which the suction airflow flows and which is defined by the solid-liquid separation cavity 11 and the suction pipe 2) of the waste entering the solid-liquid separation cavity 11 through the suction pipe 2, the winding assembly 3 includes an impeller 31 which can rotate under the action of the suction airflow, and the impeller 31 can wind the fibrous waste sucked by the suction airflow when rotating.

[0041] The tank body 1 forms a solid-liquid separation cavity 11 inside for separating solid waste and liquid waste, and the solid-liquid separation cavity 11 serves as a collection space and a separation space after the waste enters, so that the waste flow can obtain a relatively stable accommodation environment after entering the water tank and has the basic conditions for subsequent solid-liquid separation.

[0042] The suction pipe 2 is arranged on the tank body 1, one end of the suction pipe 2 is used to connect the suction passage of the cleaning head of the cleaning equipment, and the other end is connected with the solid-liquid separation cavity 11, thereby establishing a communication path between the suction passage of the cleaning equipment and the solid-liquid separation cavity 11 in structure, so that the waste can be introduced into the inside of the water tank from the cleaning head side along the path.

[0043] The negative pressure unit of the cleaning equipment can provide negative pressure to the solid-liquid separation cavity 11, and the negative pressure formed by the negative pressure unit can be transmitted to the suction pipe 2 through the solid-liquid separation cavity 11, so as to form a suction airflow in the suction pipe 2 which points to the solid-liquid separation cavity 11. Based on the suction airflow, the waste water, solid waste and fibrous waste such as hair generated in the ground cleaning process can enter the suction pipe 2 from the suction passage of the cleaning head under the traction of the negative pressure, and further enter the solid-liquid separation cavity 11, realizing the transfer and collection of the waste from the cleaning head to the water tank.

[0044] The winding assembly 3 is arranged on the suction path of the waste entering the solid-liquid separation cavity 11 through the suction pipe 2, and the winding assembly 3 is in the effective action area of the suction airflow, so that the suction airflow can produce a driving action on the winding assembly 3 when flowing through the winding assembly 3. The winding assembly 3 includes an impeller 31 which can rotate under the action of the suction airflow, and the impeller 31 produces a rotary motion under the impact or tangential action of the suction airflow, so as to convert the kinetic energy of the suction airflow into the rotary kinetic energy of the impeller 31.

[0045] During rotation, the impeller 31 can entangle the fibrous dirt that is drawn into the water tank by the airflow. When the fibrous dirt enters the suction path, it is no longer solely dependent on the traction of the airflow to be drawn in. Instead, it can be pulled and entangled by the rotation of the impeller 31, making it easier for the fibrous dirt to be captured and migrate towards the solid-liquid separation chamber 11 in a bundle or clump form.

[0046] Because fibrous dirt is long, soft, easy to bend, and easy to get stuck, it is easy to get stuck near the inlet of the suction pipe 2 and form a semi-suction state where some of it enters and some of it is retained when suction is used alone. This results in hair remaining on the outside of the suction pipe 2, which leads to poor suction effect.

[0047] After the winding assembly 3 is arranged on the suction path, the rotation of the impeller 31 can continuously apply winding traction to the fibrous dirt, so that the fibrous dirt can be removed from the hanging position at the inlet edge more quickly when it enters the suction pipe 2 and moves towards the solid-liquid separation chamber 11. This reduces the probability of fibrous dirt forming a hanging edge residue at the inlet of the suction pipe 2, thereby avoiding the situation where part of the hair is located outside the inlet of the suction pipe 2 and part of it enters the inside of the suction pipe 2, thus improving the suction capacity of fibrous dirt.

[0048] The winding assembly 3 uses the intake airflow to rotate the impeller 31 and wind and pull fibrous dirt. Without changing the basic dirt suction method of the cleaning equipment, it can effectively improve the problem of fibrous dirt being easily left at the inlet of the suction pipe 2 and being incompletely sucked in, and improve the collection and cleaning effect of the water tank on fibrous dirt such as hair.

[0049] In one exemplary embodiment, please refer to Figure 3 , Figure 7 and Figure 8 As shown, the winding assembly 3 includes a base 32 that is detachably connected to the housing 1 or the suction pipe 2, and an impeller 31 is rotatably disposed on the base 32.

[0050] The base 32 is designed to be detachably connected to the housing 1 or the suction pipe 2, so that the winding assembly 3 can be installed as a detachable module on the suction path of the waste entering the solid-liquid separation chamber 11 through the suction pipe 2. The detachable connection between the base 32 and the housing 1 or the suction pipe 2 allows the base 32 to obtain stable positioning and support in the assembled state, thereby providing a mounting base for the rotation of the impeller 31. At the same time, when maintenance is required, the base 32 can be removed from the housing 1 or the suction pipe 2 by disconnecting the connection.

[0051] The impeller 31 and the base 32 form a rotational fit, allowing the impeller 31 to rotate relative to the base 32 under the action of the intake airflow. The base 32 remains relatively fixed under the support of the housing 1 or the suction pipe 2, thus limiting the rotation area of ​​the impeller 31 within a preset suction path range. This prevents the transmission of loads or vibrations generated during the rotation of the impeller 31 from causing the winding assembly 3 to loosen or shift within the housing 1 or the suction pipe 2. By integrating the rotational support of the impeller 31 and the mounting interface of the housing 1 or the suction pipe 2 onto the base 32, the base 32 can perform positioning, limiting, and load-bearing functions during assembly.

[0052] During the suction of fibrous dirt, the rotation of impeller 31 will continuously generate a winding and pulling effect on fibrous dirt such as hair. As the cleaning operation progresses, the fibrous dirt will inevitably gradually become entangled and accumulate on the surface of impeller 31 or in the vicinity of impeller 31. If the winding component 3 is not removable, the user often needs to disassemble the housing 1 or the suction pipe 2 to clean the impeller 31. This is not only cumbersome to operate, but also easy to cause incomplete maintenance or inconvenience in cleaning, which in turn affects the subsequent winding effect and suction smoothness.

[0053] The base 32 is designed to be detachably connected to the housing 1 or the suction pipe 2, so that the impeller 31 can be removed together with the base 32. During routine maintenance, the user only needs to disconnect the base 32 from the housing 1 or the suction pipe 2 and remove it to expose the impeller 31 and the dirt rolled on it to the outside, which is convenient for cleaning the impeller 31 and avoids excessive accumulation of fibrous dirt on the impeller 31, which would increase the rotation resistance of the impeller 31, reduce the rotation efficiency, or even cause jamming.

[0054] Specifically, please refer to Figure 4 and Figure 5 As shown, the base 32 is fixedly provided with a rotating shaft 33, and the impeller 31 is provided with a bushing 311 adapted to the rotating shaft 33. The bushing 311 is rotatably sleeved on the rotating shaft 33.

[0055] The rotating shaft 33 is fixedly mounted on the base 32 as a rotational support component for the impeller 31, ensuring that the rotating shaft 33 remains positionally stable relative to the base 32 when the winding assembly 3 is assembled, thereby providing a rotational reference for the rotation of the impeller 31. The impeller 31 is provided with a bushing 311 adapted to the rotating shaft 33. The inner contour of the bushing 311 matches the outer contour of the rotating shaft 33, enabling the impeller 31 to establish a coaxial fit with the rotating shaft 33 through the bushing 311.

[0056] While the bushing 311 is guided axially by the rotating shaft 33 and supported radially by the rotating shaft 33, the bushing 311 can generate a smooth relative rotation with respect to the rotating shaft 33, so that the impeller 31 can rotate around the axis of the rotating shaft 33 under the action of the intake airflow, while the base 32 remains relatively fixed to the rotating shaft 33. Thus, in terms of structure, a cooperative relationship is formed in which the base 32 provides fixed support, the rotating shaft 33 provides the rotation axis 33, the bushing 311 achieves rotatable engagement, and the impeller 31 completes rotation and winding.

[0057] During operation, the intake airflow passes through the winding assembly 3 along the intake path and drives the impeller 31. The impeller 31 rotates around the shaft 33 and winds up the incoming fibrous waste. The shaft 33 is fixed on the base 32 and can withstand the radial load and axial disturbance generated when the impeller 31 rotates. The load is transferred to the installation position of the housing 1 or the suction pipe 2 through the base 32, so that the winding assembly 3 can maintain overall structural stability. The bushing 311, as the adapter between the impeller 31 and the shaft 33, not only ensures that the impeller 31 has sufficient guidance and support when rotating, but also allows the impeller 31 to remain rotatable even when winding fibrous waste and the load gradually increases, thereby reducing the probability of fibrous waste remaining at key positions in the intake path.

[0058] Further, please refer to Figure 4 and Figure 5 As shown, a bearing 34 is provided between the rotating shaft 33 and the bushing 311. The bearing 34 includes an inner ring and an outer ring that can rotate relative to each other. The inner ring is fixedly connected to the rotating shaft 33, and the outer ring is fixedly connected to the bushing 311.

[0059] The bearing 34 is located at the mating interface between the rotating shaft 33 and the bushing 311, so that the relative rotation of the impeller 31 when it rotates around the rotating shaft 33 is borne by the bearing 34, thereby converting the sliding friction between the rotating shaft 33 and the bushing 311 into rolling friction or low-friction rotation between the inner and outer rings of the bearing 34.

[0060] The bearing 34 includes an inner ring and an outer ring that can rotate relative to each other. The inner ring is fixedly connected to the rotating shaft 33, and the outer ring is fixedly connected to the bushing 311, thus forming a coaxial force transmission and rotational support structure relationship between the rotating shaft 33, the inner ring, the outer ring, and the bushing 311. Since the inner ring is fixedly connected to the rotating shaft 33, it can remain relatively stationary with the rotating shaft 33 after the winding assembly 3 is assembled, and together with the rotating shaft 33, it serves as a rotation reference. The outer ring is fixedly connected to the bushing 311, and it can rotate together with the bushing 311. Thus, when the bushing 311 and the impeller 31 rotate under the drive of the intake airflow, the outer ring of the bearing 34 rotates synchronously with the bushing 311, while the inner ring of the bearing 34 remains stationary or relatively fixed to the rotating shaft 33.

[0061] In wet cleaning scenarios, the suction path not only experiences airflow impact but also includes the entry of sewage, fine solid particles, and fibrous contaminants. As the impeller 31 winds up the fibrous contaminants, it gradually develops an uneven peripheral load, and the accumulation of the wound material can lead to a gradual increase in the rotational resistance of the impeller 31. If the rotation between the shaft 33 and the bushing 311 is achieved solely through a simple sleeve connection, the contact surface between the shaft 33 and the bushing 311 is prone to increased friction, accelerated wear, and even jamming under conditions of uneven load, contaminant intrusion, and humidity, making it difficult for the impeller 31 to be reliably driven by the suction airflow and to rotate continuously.

[0062] By setting a bearing 34 between the rotating shaft 33 and the bushing 311, the force and friction of the impeller 31 during rotation can be concentrated at the relative rotation interface inside the bearing 34, reducing the starting torque and operating torque requirements. This makes it easier for the impeller 31 to start and maintain a more stable speed under the action of the intake airflow, thereby ensuring that the winding assembly 3 continuously generates a winding and traction effect on fibrous dirt such as hair.

[0063] In one exemplary embodiment, please refer to Figure 4 and Figure 5 As shown, the impeller 31 has a frustum shape, and its outer diameter gradually decreases along the axis of the impeller 31 away from the base 32.

[0064] The impeller 31 forms a frustum-shaped rotating body structure with a tapered outer contour around its axis. Along the axis of the impeller 31 away from the base 32, the outer diameter of the impeller 31 gradually decreases, so that the impeller 31 forms a relatively large end on the side close to the base 32 and a relatively small end on the side away from the base 32.

[0065] The frustum-shaped structure matches the working environment of the winding assembly 3 located on the suction path. On the one hand, the larger outer circumferential radius formed by the larger end allows the suction airflow to obtain a larger effective lever arm when acting on the impeller 31, thereby improving the driving efficiency of the suction airflow on the impeller 31, reducing the aerodynamic conditions required for the impeller 31 to start, and improving the continuous rotation capability of the impeller 31 under fluctuating suction airflow. On the other hand, the tapered structure with a gradually decreasing outer diameter makes it easier for fibrous dirt such as hair entering the suction path to be guided and gathered along the outer circumference of the impeller 31 as it contacts the impeller 31 and rotates with it. Under the guidance of the frustum-shaped impeller 31, the fibrous dirt tends to gather towards the smaller end with a smaller outer diameter, thus changing from a loose dragging form to a more compact winding form, reducing the probability of fibrous dirt forming edge residue.

[0066] Meanwhile, the outer diameter of the impeller 31 gradually decreases in the direction away from the base 32, so that the impeller 31 has more structural strength and support space in the area close to the base 32. The impeller 31 and the rotating support structure such as the bushing 311 and the bearing 34 can obtain a more stable force structure at the larger outer diameter end, reducing the risk of local deformation caused by off-center load or accumulation of entangled material when the impeller 31 rotates. This is conducive to maintaining the coaxiality and stability of the impeller 31 rotating around the axis of the impeller 31.

[0067] In one exemplary embodiment, please refer to Figure 3 and Figure 4 As shown, the impeller 31 includes a plurality of blades 312 arranged circumferentially along the impeller 31. The windward surface 313 of the blades 312 is at least partially located in the flow path of the intake airflow, so that the intake airflow can act on the windward surface 313 of the blades 312 to generate a driving force for the impeller 31 to rotate.

[0068] Multiple blades 312 are spaced apart around the axis of the impeller 31 and together constitute the aerodynamic force-bearing structure of the impeller 31. This gives the impeller 31 not only a rotating body shape within the suction path but also a force-bearing surface that effectively interacts with the intake airflow. After the impeller 31 is assembled into the suction path, the windward surface 313 of the blades 312 is located in the effective flow area of ​​the intake airflow, allowing the intake airflow to impact, deflect, or exert pressure difference effects on the windward surface 313 during its flow.

[0069] Since the windward surface 313 of the blades 312 is at least partially arranged in the flow path of the intake airflow, the intake airflow can continuously act on the windward surface 313 and apply a circumferential aerodynamic component to the blades 312, thereby generating a driving torque on the impeller 31 that drives the impeller 31 to rotate around its axis. The circumferential arrangement of multiple blades 312 ensures that at least some blades 312 remain within the action area of ​​the intake airflow at any rotation angle. The driving torque can be continuously generated and tend to stabilize within the rotation cycle of the impeller 31, avoiding intermittent drive or speed fluctuations caused by relying on a single force surface. This allows the impeller 31 to start more easily and maintain continuous rotation under the intake airflow conditions provided by the cleaning equipment.

[0070] The circumferential arrangement of multiple blades 312 also enables the impeller 31 to maintain a more uniform force distribution when it is wrapped with fibrous dirt and the load gradually increases, reducing the risk of rotational eccentricity and radial runout caused by unilateral force, thereby helping to maintain the rotational stability of the impeller 31 and reduce the probability of jamming.

[0071] Specifically, please refer to Figure 4 and Figure 5As shown, at least some of the blades 312 have a brush portion 35 that protrudes radially outward along the impeller 31 on the outer surface. The brush portion 35 includes a plurality of bristles 351 arranged at intervals along the axial direction of the impeller 31.

[0072] The brush portion 35 protrudes outward along the radial direction of the impeller 31, positioning it further outward and thus making it easier to contact fibrous contaminants such as hair entering the suction path. The brush portion 35 can rotate synchronously with the blade 312, enabling it to exert a continuous traction force on the fibrous contaminants during the rotation of the impeller 31.

[0073] The brush section 35 includes a plurality of bristles 351 arranged at intervals along the axial direction of the impeller 31, so that the brush section 35 forms a plurality of contact zones in the axial direction of the impeller 31. After entering the suction path, fibrous dirt can be captured, attached and driven to be rolled up by the bristles 351 at different axial positions, avoiding the risk of local entanglement or blockage caused by the concentrated accumulation of fibrous dirt at only a single axial position.

[0074] Fiber-like dirt such as hair is soft and long. When it enters the suction path, it is easy to swing with the airflow and rub against the surrounding structure. If the rigid surface of the blade 312 is used to make friction contact with the fibrous dirt, the fibrous dirt may slip, brush past or detach after a short contact, resulting in insufficient winding and traction. It may still form a residual state of partly entering and partly remaining near the inlet of the suction pipe 2.

[0075] After the brush portion 35 protrudes radially outward, the bristles 351 form a flexible protruding structure, which can provide more attachment points and frictional contact length when fibrous dirt approaches the outer periphery of the impeller 31. The fibrous dirt is more easily captured by the bristles 351 and rolled into the rotating area of ​​the impeller 31. As the impeller 31 continues to rotate, the bristles 351 sweep and pull the fibrous dirt. Under the drive of the bristles 351, the fibrous dirt gradually adheres to and wraps around the outer periphery of the impeller 31. The winding process is thus more stable and complete, making it easier for the fibrous dirt to migrate towards the solid-liquid separation chamber 11 with the intake airflow and completely enter the interior of the water tank.

[0076] In one exemplary embodiment, please refer to Figure 2 , Figure 3 and Figure 7 As shown, the solid-liquid separation chamber 11 is provided with an air inlet 111 that is connected to the suction pipe 2, and the box body 1 is provided with a suction port 12 that is connected to the suction pipe 2 and the suction channel of the cleaning equipment.

[0077] The air inlet 111 is connected to the suction pipe 2, allowing the suction airflow and the dirt it carries to enter the solid-liquid separation chamber 11, thus forming a continuous flow interface between the suction pipe 2 and the solid-liquid separation chamber 11. The air inlet 111 is located at the connection point of the solid-liquid separation chamber 11 corresponding to the suction pipe 2, and the opening direction of the air inlet 111 matches the extension direction of the suction pipe 2, allowing the airflow in the suction pipe 2 to enter the solid-liquid separation chamber 11 with minimal flow loss, and guiding sewage, solid dirt, and fibrous dirt such as hair into the solid-liquid separation chamber 11 for collection and containment.

[0078] The suction port 12 connects the suction pipe 2 and the suction channel of the cleaning equipment, allowing the water tank to form a sealed suction port with the suction channel of the cleaning equipment after assembly. The suction port 12, serving as the connection between the water tank and the cleaning equipment, is located on the outer wall of the tank body 1 and connects to one end of the suction pipe 2. The other end connects to the suction channel of the cleaning equipment, thus structurally linking the suction channel, suction port 12, suction pipe 2, and air inlet 111 of the cleaning equipment into a complete suction path.

[0079] exist Figure 2 and Figure 3 In the embodiment shown, the winding assembly 3 is arranged in the solid-liquid separation chamber 11 and adjacent to the air inlet 111. The suction airflow formed in the suction pipe 2 carries sewage, solid waste and fibrous waste such as hair into the solid-liquid separation chamber 11. The arrangement of the winding assembly 3 near the air inlet 111 enables the fibrous waste to be captured by the impeller 31 and subjected to winding traction as soon as it enters the solid-liquid separation chamber 11 and before it diffuses and disperses in the chamber. This reduces the probability of fibrous waste getting stuck, swinging back or getting stuck around the air inlet 111, at the end of the suction pipe 2 or in the entrance area of ​​the solid-liquid separation chamber 11.

[0080] Since the winding assembly 3 is located inside the solid-liquid separation chamber 11, the solid-liquid separation chamber 11 can provide a relatively open working space for the impeller 31 to rotate. When the impeller 31 rotates under the action of the intake airflow, it is not easily restricted, which is conducive to the impeller 31 maintaining a stable speed and continuously applying driving and winding and gathering effects to the fibrous dirt.

[0081] A guide section 4 is provided at the air inlet 111. The guide section 4 is located on the path of the intake airflow into the solid-liquid separation chamber 11 and forms a cooperative relationship with the air inlet 111. The guide section 4 is used to guide the intake airflow to flow towards the impeller 31 in the tangential direction of the impeller 31, so that the intake airflow is rectified before reaching the impeller 31 and forms a more effective tangential velocity component in the circumference of the impeller 31.

[0082] Impeller 31 obtains driving torque by drawing in airflow. The driving effect of the airflow on impeller 31 is related not only to the airflow velocity but also to the direction of airflow. When the airflow acts on impeller 31 in a direction closer to tangential, the lever arm formed by the airflow in the circumference of impeller 31 is larger, which can generate a higher effective driving torque on impeller 31, making impeller 31 easier to start and able to maintain continuous rotation when the load changes.

[0083] During operation, the intake airflow enters the solid-liquid separation chamber 11 through the air inlet 111 and is first guided by the guide section 4. The airflow acts tangentially on the impeller 31, giving the impeller 31 a continuous rotational driving force. After the impeller 31 rotates, it forms a coiling and pulling force on fibrous dirt such as hair entering the inlet area of ​​the solid-liquid separation chamber 11. Under the circumferential driving force of the impeller 31, the fibrous dirt is more easily captured and gathered into bundles, preventing the fibrous dirt from repeatedly swinging and rubbing against the edge structure near the air inlet 111 in a loose and dragging form.

[0084] As the winding process proceeds, the fibrous waste changes from an easily clinging, slender shape to a more compact, wound shape. It then enters deeper into the solid-liquid separation chamber 11 with the airflow and enters the subsequent solid-liquid separation area together with the sewage and solid waste, thereby reducing the probability of semi-suction residue forming at the suction port 12.

[0085] exist Figure 7 and Figure 8 In the illustrated embodiment, the winding assembly 3 is positioned on the suction pipe 2 and adjacent to the suction port 12, placing the winding assembly 3 in the inlet area of ​​the cleaning equipment's suction path into the water tank. The proximity of the winding assembly 3 to the suction port 12 ensures that fibrous debris such as hair enters the effective range of the winding assembly 3 immediately after entering the suction port 12 from the cleaning equipment's suction channel. This allows the fibrous debris to be captured and wound up by the impeller 31 in the early stages of entering the suction pipe 2, thereby reducing the probability of fibrous debris forming clumps or residues at the edge of the suction port 12, in the inlet area of ​​the suction pipe 2, and near the outer interface 21 of the water tank.

[0086] Since residual problems often occur at the inlet edge and at the point of abrupt flow change, the pre-positioned winding assembly 3 can apply circumferential traction and winding to the fibrous dirt before it repeatedly scrapes against the edge of the suction port 12 or forms a semi-suction state. This allows the fibrous dirt to change from a loose, dragging state to a coiled state more quickly, and then migrate more smoothly along the suction pipe 2 to the solid-liquid separation chamber 11.

[0087] The suction pipe 2 is equipped with an interface 21 that is compatible with the winding assembly 3. The interface 21 serves as the mounting point for the winding assembly 3 and is positioned on the suction pipe 2 to form a mating relationship with the pipe structure of the suction pipe 2, allowing the winding assembly 3 to be assembled in a predetermined posture and position on the suction pipe 2. The mating relationship between the interface 21 and the winding assembly 3 ensures that the assembled winding assembly 3 matches the inner contour of the suction pipe 2. The winding assembly 3 forms a stable position and limit within the suction path, preventing axial movement of the winding assembly 3 under conditions such as suction airflow impact and changes in fibrous waste winding load, thereby ensuring that the impeller 31 is located in the effective action area of ​​the suction airflow and maintains stable rotation.

[0088] The winding assembly 3 is detachably mounted on the interface 21, so that the winding assembly 3 can be reliably installed through the interface 21 during normal use, and can be removed from the interface 21 by disconnecting the connection when maintenance is required, so as to facilitate cleaning or replacement of the winding assembly 3; the user can remove the winding assembly 3 from the suction pipe 2 to clean the fibrous dirt wound around the impeller 31.

[0089] In one exemplary embodiment, please refer to Figure 1 and Figure 3 As shown, the water tank also includes a negative pressure channel 5 for connecting the negative pressure unit of the cleaning equipment with the solid-liquid separation chamber 11. The negative pressure provided by the negative pressure unit is transmitted to the solid-liquid separation chamber 11 and the suction pipe 2 through the negative pressure channel 5 to form a suction airflow.

[0090] Negative pressure channel 5 is installed on the housing 1 and communicates with the solid-liquid separation chamber 11. The other end of negative pressure channel 5 can communicate with the negative pressure unit of the cleaning equipment. After the water tank is installed in the cleaning equipment, the negative pressure generated by the negative pressure unit can be transmitted to the solid-liquid separation chamber 11 through negative pressure channel 5, reducing the internal pressure of the solid-liquid separation chamber 11 and creating a pressure difference environment relative to the outside. Since the suction pipe 2 is connected to the solid-liquid separation chamber 11, the negative pressure in the solid-liquid separation chamber 11 is further transmitted to the suction pipe 2, causing the suction pipe 2 to form an airflow pointing towards the solid-liquid separation chamber 11. This draws in sewage, solid waste, and fibrous waste such as hair sucked into the suction pipe of the cleaning equipment and transports them into the solid-liquid separation chamber 11, thus collecting the waste.

[0091] In one exemplary embodiment, please refer to Figure 3 and Figure 6 As shown, a solid-liquid separation element 6 is provided inside the solid-liquid separation chamber 11. The solid-liquid separation element 6 is used to separate the solid and liquid components of the waste sucked into the solid-liquid separation chamber 11 through the suction pipe 2. The solid-liquid separation element 6 is arranged in the internal space of the solid-liquid separation chamber 11 and forms a cooperative relationship with the solid-liquid separation chamber 11, so that the waste sucked into the solid-liquid separation chamber 11 through the suction pipe 2 can be guided into the working area of ​​the solid-liquid separation element 6 after entering the solid-liquid separation chamber 11.

[0092] Since the inhaled contaminants are usually in a mixed state of solid and liquid, and contain gas to form a three-phase flow of gas, liquid and solid, if there is no effective solid-liquid separation structure, the solid contaminants can easily drift disorderly with the liquid in the solid-liquid separation chamber 11 and enter the subsequent gas path or negative pressure channel 5 area, which may cause blockage or pollution, and also cause the sewage holding area to mix with the solid contaminant accumulation area, resulting in difficult maintenance and cleaning and affecting the suction efficiency.

[0093] The solid-liquid separator 6 is installed inside the solid-liquid separation chamber 11, allowing contaminants entering the chamber to be divided and diverted within the chamber. Solid and liquid contaminants are effectively separated and contained within their respective containers by the solid-liquid separator 6, thus ensuring stable sludge suction and continuous operation of the water tank. By restricting and guiding the flow path, flow cross-section, or passage conditions of the contaminants through the solid-liquid separator 6, liquid contaminants can enter the predetermined liquid containment area under the influence of gravity or differences in flow resistance, while solid contaminants are trapped in the solid accumulation area corresponding to the solid-liquid separator 6.

[0094] Specifically, please refer to Figure 3 and Figure 6 As shown, the solid-liquid separator 6 has filter holes 61 on its sidewalls and / or bottom wall for filtering solid contaminants; the solid-liquid separator 6 has a support part 62 at its bottom, which is supported on the bottom wall of the solid-liquid separation chamber 11 to form a space 7 for containing sewage between the bottom wall of the solid-liquid separator 6 and the bottom wall of the solid-liquid separation chamber 11.

[0095] After the sewage is sucked into the solid-liquid separation chamber 11 through the suction pipe 2 and enters the working area of ​​the solid-liquid separation element 6, the sewage can pass through the filter hole 61 to achieve fluid separation under the action of negative pressure traction and its own gravity. Solid sewage that is larger in volume or whose shape is not easy to pass through the filter hole 61 is blocked by the filter hole 61 and retained in the solid-liquid separation element 6, thereby separating solid sewage from liquid sewage in the solid-liquid separation chamber 11.

[0096] The structural design of the filter holes 61 on the side wall or bottom wall allows the solid-liquid separator 6 to adapt to different flow states and different installation spaces. When the dirt in the solid-liquid separation chamber 11 forms a flow trend mainly of circumferential diffusion, the filter holes 61 on the side wall can provide a larger liquid passage area and reduce the local flow velocity, improve the sewage passage efficiency and reduce the probability of solid dirt passing through the filter holes 61 with the liquid. When the dirt mainly settles downward under the action of gravity, the filter holes 61 on the bottom wall can provide a direct channel for sewage discharge, allowing the liquid to quickly enter the lower containment area and causing solid dirt to accumulate in the solid-liquid separator 6.

[0097] The support part 62 is supported on the bottom wall of the solid-liquid separation chamber 11, so that the solid-liquid separation component 6 has a stable installation height in the solid-liquid separation chamber 11 and maintains a predetermined distance from the bottom wall of the solid-liquid separation chamber 11. The solid-liquid separation component 6 transfers its own weight and the load generated by the accumulation of solid waste to the bottom wall of the solid-liquid separation chamber 11 through the support part 62, thereby avoiding the bottom wall of the solid-liquid separation component 6 from directly contacting the bottom wall of the solid-liquid separation chamber 11, which would cause the liquid passage to be crushed or partially sealed.

[0098] The support part 62 can form a space 7 for accommodating sewage between the bottom wall of the solid-liquid separator 6 and the bottom wall of the solid-liquid separation chamber 11. The space 7 is located below the solid-liquid separator 6 and communicates with the interior of the solid-liquid separation chamber 11. After the sewage enters below the solid-liquid separator 6 through the filter hole 61, it can collect in the space 7.

[0099] This disclosure also provides a cleaning device including a main unit, a cleaning head, and the aforementioned water tank, the water tank being detachably mounted on the cleaning head, and the main unit including a negative pressure unit for providing negative pressure to the water tank and the cleaning head.

[0100] When assembled, the water tank and the cleaning head can form a stable positioning fit and sealed connection. During the cleaning operation, the cleaning head is responsible for contacting the ground and sucking up dirt. The water tank, as a dirt and sewage collection component, works in conjunction with the cleaning head to allow the dirt sucked up by the cleaning head to be introduced into and stored in the water tank.

[0101] The negative pressure unit provides negative pressure to the water tank and cleaning head, enabling the cleaning equipment to generate an airflow under negative pressure and drive dirt from the cleaning head into the water tank. The negative pressure generated by the negative pressure unit can be transmitted to the cleaning head and water tank through the air passage structure of the cleaning equipment, creating a pressure difference environment between the suction channel of the cleaning head and the inside of the water tank relative to the outside. Under the action of pressure difference, air flows and carries sewage, solid dirt, and fibrous dirt such as hair into the water tank, realizing the suction and collection of dirt.

[0102] In summary, the water tank and cleaning equipment provided in this disclosure, by incorporating a winding assembly in the suction path of the water tank, allows the suction airflow to drive the impeller of the winding assembly to rotate while simultaneously guiding the dirt through the suction pipe into the solid-liquid separation chamber. This exerts a continuous winding and traction effect on fibrous dirt such as hair, making it easier to capture and bundle the fibrous dirt as it enters the water tank. This reduces the probability of fibrous dirt remaining at the inlet of the suction pipe, thus improving the suction effect. Because of the reduced fibrous dirt residue, the local resistance of the suction path is less likely to increase, mitigating suction attenuation and suction fluctuations caused by hair accumulation. This helps maintain a continuous and smooth flow of dirt into the water tank, thereby improving the overall cleaning effect and user experience of the cleaning equipment in situations involving hair.

[0103] 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.

[0104] 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 water tank, characterized in that, include: The housing has a solid-liquid separation chamber for separating solid and liquid contaminants; A suction pipe is installed in the housing and connected to the solid-liquid separation chamber. Under the action of the suction airflow, the waste can enter the solid-liquid separation chamber through the suction pipe. A winding assembly is provided on the suction path of the waste entering the solid-liquid separation chamber through the suction pipe. The winding assembly includes an impeller that can rotate under the action of the suction airflow. When the impeller rotates, it can wind up the fibrous waste sucked in with the suction airflow.

2. The water tank according to claim 1, characterized in that, The winding assembly includes a base detachably connected to the housing or the suction pipe, and the impeller is rotatably disposed on the base.

3. The water tank according to claim 2, characterized in that, The base is fixedly provided with a rotating shaft, and the impeller is provided with a bushing adapted to the rotating shaft. The bushing is rotatably fitted onto the rotating shaft.

4. The water tank according to claim 3, characterized in that, A bearing is provided between the rotating shaft and the bushing. The bearing includes an inner ring and an outer ring that can rotate relative to each other. The inner ring is fixedly connected to the rotating shaft, and the outer ring is fixedly connected to the bushing.

5. The water tank according to claim 2, characterized in that, The impeller is truncated cone-shaped, and its outer diameter gradually decreases along the axis of the impeller away from the base.

6. The water tank according to claim 1, characterized in that, The impeller includes a plurality of blades arranged circumferentially along the impeller, with the windward side of the blades at least partially located in the flow path of the intake airflow, such that the intake airflow can act on the windward side of the blades to generate a driving force for rotating the impeller.

7. The water tank according to claim 6, characterized in that, At least a portion of the blades have a brush portion that protrudes radially outward along the impeller, the brush portion comprising a plurality of bristles spaced apart along the axial direction of the impeller.

8. The water tank according to claim 1, characterized in that, The solid-liquid separation chamber is provided with an air inlet that communicates with the suction pipe. The winding assembly is located in the solid-liquid separation chamber and adjacent to the air inlet. The air inlet is provided with a guide section for guiding the suction airflow tangentially to the impeller.

9. The water tank according to claim 1, characterized in that, The housing is provided with a suction port that connects to the suction pipe. The winding assembly is located on the suction pipe and adjacent to the suction port. The suction pipe is provided with an interface that is adapted to the winding assembly. The winding assembly is detachably located on the interface.

10. The water tank according to claim 1, characterized in that, The water tank also includes a negative pressure channel for connecting the negative pressure unit and the solid-liquid separation chamber. The negative pressure provided by the negative pressure unit is transmitted to the solid-liquid separation chamber and the suction pipe through the negative pressure channel to form a suction airflow.

11. The water tank according to claim 1, characterized in that, The solid-liquid separation chamber is equipped with a solid-liquid separation component, which is used to separate the solid and liquid components of the waste that is sucked into the solid-liquid separation chamber through the suction pipe.

12. The water tank according to claim 11, characterized in that, The solid-liquid separator has filter holes on its sidewalls and / or bottom wall for filtering solid contaminants; and / or The bottom of the solid-liquid separator is provided with a support portion, which is supported on the bottom wall of the solid-liquid separation chamber to form a space for containing sewage between the bottom wall of the solid-liquid separator and the bottom wall of the solid-liquid separation chamber.

13. A cleaning device, characterized in that, The device includes a main unit, a cleaning head, and a water tank as described in any one of claims 1 to 12, the water tank being detachably mounted on the cleaning head, and the main unit including a negative pressure unit for providing negative pressure to the water tank and the cleaning head.

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