Cleaning brush and scrubber

Abstract

The present application relates to the field of floor cleaning machines, and provides a cleaning brush and a floor cleaning machine, the cleaning brush comprising: a base; a front roller brush arranged at the front end of the base, and the front end of the base being provided with a front suction port facing the front roller brush; a rear roller brush arranged at the rear end of the base, and the rear end of the base being provided with a rear suction port facing the rear roller brush; and a flow guide assembly arranged on the base and located between the front suction port and the rear suction port, the flow guide assembly comprising a front flow guide channel, a rear flow guide channel and a main suction port, one end of the front flow guide channel being in communication with the front suction port, the other end of the front flow guide channel being in communication with the main suction port and forming a spiral channel, one end of the rear flow guide channel being in communication with the rear suction port, the other end of the rear flow guide channel being in communication with the main suction port and forming a spiral channel. The present application aims to solve the defects of large wind resistance loss and solid waste blockage in the existing technology of the front and rear suction ports converging into the main suction port, so as to improve the cleaning performance and energy consumption control.

Description

Technical Field

[0001] This invention relates to the field of floor scrubbing machine technology, and more particularly to a cleaning brush and a floor scrubbing machine. Background Technology

[0002] In the field of cleaning equipment, floor scrubbers are widely used in various scenarios such as homes, commercial offices, and public venues due to their multi-functional integration advantages, including sweeping, mopping, and wastewater recycling. Floor scrubbers with a dual-brush structure achieve bidirectional scraping and sweeping of floor stains through the coordinated rotation of the front and rear brushes, effectively improving the coverage and cleaning effect of a single cleaning pass.

[0003] Currently, the air duct design of existing dual-brush floor scrubbers generally adopts a confluence structure of the front and rear brush suction ports and the main suction port. The first scheme is a confluence structure of the front and rear suction ports towards the middle of the main suction port. It extends the front suction port corresponding to the front brush and the rear suction port corresponding to the rear brush through arc transition air ducts, and finally realizes the convergence of airflow and debris at the main suction port. Then, the main suction port connects to the negative pressure system to complete the suction. The second scheme is that the front and rear suction ports converge below the main suction port to form an intersection point. The third scheme is that the air duct connected to the rear suction port extends to the side air duct of the front suction port for convergence and connection.

[0004] However, through fluid dynamics simulation analysis and actual working condition tests, it was found that the above solutions all have obvious technical defects: on the one hand, the wind resistance loss at the suction port joint is relatively large, which not only reduces the effective suction of the negative pressure system, but also increases the energy consumption of the equipment; on the other hand, solid waste (such as debris, particulate matter, etc.) is prone to accumulate in the confluence area and form blockages. Once blockage occurs, it will not only lead to a sharp drop in cleaning efficiency, but may also cause motor overload, abnormal noise in the air duct, and other malfunctions due to poor airflow, which seriously affects the reliability and service life of the floor scrubber.

[0005] Therefore, the existing air duct design of dual-brush floor scrubbers has failed to fundamentally solve the technical problems of large air resistance loss and solid waste blockage in the confluence area. A brand-new air duct / fluid channel structure design is urgently needed to break through the existing technical bottlenecks. Summary of the Invention

[0006] This invention provides a cleaning brush and floor scrubber to solve the defects of existing technologies, such as large wind resistance loss and solid waste blockage, in the front and rear suction port to main suction port convergence structure. This invention aims to improve cleaning performance and energy consumption control, and enhance the reliability of equipment use.

[0007] This invention provides a floor cleaning brush, comprising:

[0008] Base;

[0009] A front roller brush is disposed at the front end of the base, and the front end of the base is provided with a front suction port facing the front roller brush;

[0010] A rear roller brush is disposed at the rear end of the base, and the rear end of the base is provided with a rear suction port facing the rear roller brush;

[0011] A flow-guiding assembly is disposed on the base and located between the front suction port and the rear suction port. The flow-guiding assembly includes a front flow-guiding channel, a rear flow-guiding channel and a main suction port. One end of the front flow-guiding channel is connected to the front suction port and the other end is connected to the main suction port to form a spiral channel. One end of the rear flow-guiding channel is connected to the rear suction port and the other end is connected to the main suction port to form a spiral channel.

[0012] According to a cleaning brush provided by the present invention, the main suction port has a front side facing the front suction port, a rear side facing the rear suction port, and a left side and a right side oppositely distributed between the front side and the rear side;

[0013] The front drainage channel is tangent to the right side of the main suction port in a clockwise direction, and the rear drainage channel is tangent to the left side of the main suction port in a clockwise direction;

[0014] Alternatively, the front drainage channel is tangent to the left side of the main suction port in a counterclockwise direction, and the rear drainage channel is tangent to the right side of the main suction port in a counterclockwise direction.

[0015] According to a cleaning brush provided by the present invention, the main suction port is provided with a first connecting port communicating with the front drainage channel and a second connecting port communicating with the rear drainage channel, and the first connecting port and the second connecting port are offset in the vertical direction.

[0016] According to a cleaning brush provided by the present invention, the top end of the second connecting port is positioned higher than the top end of the first connecting port.

[0017] According to a cleaning brush provided by the present invention, the main suction port has a cylindrical extension height, and the main suction port is inclined from bottom to top toward the rear suction port.

[0018] According to a cleaning brush provided by the present invention, the front drainage channel gradually rises along an arc-shaped trajectory from the front suction port toward the main suction port, and the front suction port is tangent to the horizontal direction of the front drainage channel;

[0019] From the rear suction port toward the main suction port, the rear drainage channel gradually rises along an arc-shaped trajectory, and the rear suction port is tangent to the horizontal direction of the rear drainage channel.

[0020] According to a cleaning brush provided by the present invention, the tangent of the front drainage channel connected to one end of the main suction port forms an obtuse angle with the axis of the main suction port;

[0021] The tangent of the rear drainage channel connected to one end of the main suction port forms an obtuse angle with the axis of the main suction port.

[0022] According to a cleaning brush provided by the present invention, the width of the front suction port is greater than the inner diameter width of the main suction port, one side of the front suction port is tangent to one side of the corresponding front drainage channel, and the other side of the front suction port is set at an obtuse angle to the other side of the front drainage channel.

[0023] The width of the rear suction port is smaller than the inner diameter of the main suction port. One side of the rear suction port is set at an obtuse angle to the side of the corresponding rear drainage channel, and the other side of the rear suction port is set at an obtuse angle to the other side of the rear drainage channel.

[0024] According to a cleaning brush provided by the present invention, the cross-sectional area of ​​the front drainage channel and / or the rear drainage channel gradually decreases along the fluid flow direction.

[0025] The present invention also provides a floor scrubbing machine, including a wastewater tank and a cleaning brush provided in the embodiments of the present invention, wherein the wastewater tank is connected to the main suction port of the cleaning brush through a connecting pipe.

[0026] The cleaning brush and floor scrubber provided by this invention form a double-helix cyclone structure between the front and main suction ports and between the rear and main suction ports. This allows the airflow from the front and rear suction ports to smoothly converge into the main suction port along the spiral trajectory. The airflow does not need to be forcibly changed in direction, but rather naturally merges with the rotational inertia of the cyclone. This effectively avoids the generation of airflow collisions and eddies, reduces the overall airflow resistance of the air duct, and enables the main suction port to maintain a stable strong negative pressure, laying the foundation for efficient cleaning.

[0027] This invention creates a continuously rotating cyclone airflow inside the main suction port through a double-helix cyclone structure: on the one hand, the centrifugal force generated by the cyclone can firmly engulf solid waste in the airflow, preventing the waste from settling due to the decrease in flow velocity; on the other hand, the smoothness of the spiral trajectory allows the waste to move quickly towards the main suction port outlet with the airflow, without any obvious stagnation area. Therefore, it solves the problem of waste blockage in the main suction port and the drainage channel, and can greatly extend the service life of the cleaning brush. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of the cleaning brush base provided by the present invention;

[0030] Figure 2 yes Figure 1 A partial schematic diagram of the front suction port, rear suction port, and drainage components;

[0031] Figure 3 This is a side view of the upper part of the base structure provided by the present invention;

[0032] Figure 4 This is a top view of the upper part of the base structure provided by the present invention.

[0033] Figure label:

[0034] 10. Base; 11. Front suction port; 12. Rear suction port; 13. Front drainage channel; 14. Rear drainage channel; 15. Main suction port; 16. First connecting port; 17. Second connecting port. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0036] In the description of this invention, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] like Figures 1 to 4 As shown, the present invention provides a floor cleaning brush, comprising:

[0040] Base 10;

[0041] A front roller brush is disposed at the front end of the base 10, and the front end of the base 10 is provided with a front suction port 11 facing the front roller brush;

[0042] A rear roller brush is disposed at the rear end of the base 10, and the rear end of the base 10 is provided with a rear suction port 12 facing the rear roller brush.

[0043] A drainage component is disposed on the base 10 and located between the front suction port 11 and the rear suction port 12. The drainage component includes a front drainage channel 13, a rear drainage channel 14 and a main suction port 15. One end of the front drainage channel 13 is connected to the front suction port 11 and the other end is connected to the main suction port 15 to form a spiral channel. One end of the rear drainage channel 14 is connected to the rear suction port 12 and the other end is connected to the main suction port 15 to form a spiral channel.

[0044] The front suction port 11 and the rear suction port 12 are used to collect wastewater, stains, and debris (such as hair and lint) generated during the cleaning process of the front and rear roller brushes, respectively. The debris is collected through two paths: the cyclone airflow in the front drainage channel 13 can quickly remove the wastewater, stains, and debris generated by the front roller brush, preventing the debris from being carried to uncleaned areas by the front roller brush; the cyclone airflow in the rear drainage channel 14 can simultaneously clean the wastewater, stains, and debris generated by the rear roller brush. Through the coordinated work of the double helix cyclone structure, the cleaning coverage and effect are effectively improved.

[0045] Understandably, in order to achieve the suction of sewage, stains and garbage, floor scrubbers are generally equipped with a suction device and a sewage tank. The sewage tank is connected to the main suction port 15 through a connecting pipe. When the suction device works, it generates negative pressure, so that the dirt enters the main suction port 15 from the front suction port 11 through the front drainage channel 13 and then enters the sewage tank, and the dirt enters the main suction port 15 from the rear suction port 12 through the rear drainage channel 14 and then enters the sewage tank.

[0046] In existing technologies, when the front and rear inlets converge, the abrupt change in the duct cross-section and the sharp turn in airflow direction easily create local vortices in the confluence area, resulting in significant air resistance loss. This invention creates a double-helix cyclone structure between the front inlet 11 and the main inlet 15, and between the rear inlet 12 and the main inlet 15. This allows the airflow from the front inlet 11 and the rear inlet 12 to smoothly converge into the main inlet 15 along a spiral trajectory. The airflow does not need to be forcibly changed in direction; instead, it naturally merges along the rotational inertia of the cyclone. This effectively avoids airflow collisions and vortices, reducing the overall airflow resistance of the duct. This allows the main inlet 15 to maintain a stable strong negative pressure, laying the foundation for efficient cleaning. Due to the significant reduction in air resistance loss, the negative pressure system can achieve suction power equal to or even better than existing technologies without maintaining high power operation. According to fluid duct simulation analysis, the front and rear spiral cyclone structure of the present invention has good gas flow between the front intake 11 and the main intake 15, and between the rear intake 12 and the main intake 15, and there are no areas with low wind pressure.

[0047] In existing solutions, the airflow velocity decreases in the confluence area, making it easy for solid waste (such as debris, hair, and small particles) to accumulate and clog, leading to cleaning interruptions and motor overload. This invention utilizes a double-helix cyclone structure to create a continuously rotating cyclone airflow inside the main suction port 15. On one hand, the centrifugal force generated by the cyclone firmly encapsulates solid waste in the airflow, preventing it from settling due to reduced flow velocity. On the other hand, the smoothness of the spiral trajectory allows waste to move quickly towards the outlet of the main suction port 15 with the airflow, without significant stagnation areas. Therefore, this solves the problem of waste clogging in the main suction port 15 and the drainage channel, significantly extending the service life of the cleaning brush.

[0048] To improve structural integration, the front drainage channel 13, rear drainage channel 14, and main suction port 15 can be manufactured using a one-piece injection molding process, eliminating the need for additional complex transition air ducts. This not only reduces the number of parts but also simplifies the assembly process. Sealing structures can be installed between the front drainage channel 13 and the front suction port 11, and between the rear drainage channel 14 and the rear suction port 12, to prevent air and water leakage.

[0049] Optionally, the front suction port 11 and the rear suction port 12 are respectively located in the middle area of ​​both ends of the base 10, which is conducive to the collection of sewage and garbage on both sides of the suction port, improving the cleaning coverage and enabling timely and effective recycling of sewage and garbage.

[0050] In a preferred embodiment of the present invention, the main suction port 15 has a front side facing the front suction port 11, a rear side facing the rear suction port 12, and left and right sides relatively distributed between the front and rear sides. Figure 2 As shown, the main suction port 15 is a cylindrical structure with a certain height, and its circumferential sidewalls can be divided into the front, rear, left and right sides.

[0051] In one embodiment, such as Figure 2 As shown, the front drainage channel 13 is tangent to the right side of the main suction port 15 in a clockwise direction, and the rear drainage channel 14 is tangent to the left side of the main suction port 15 in a clockwise direction.

[0052] When the equipment is working, the front airflow cuts in clockwise from the right side of the main suction port 15, and the rear airflow cuts in clockwise from the left side of the main suction port 15. The two airflows form a superposition effect in the same direction inside the main suction port 15, without interfering with each other, avoiding airflow collision, improving the stability and intensity of airflow rotation, and providing continuous and strong centrifugal force support for waste entrainment. After the two airflows merge in the main suction port 15, they continue to advance clockwise, with no obvious airflow stagnation areas, which can eliminate the problem of local blockage caused by airflow dead zones.

[0053] With the front drainage channel 13 tangent to the right side of the main suction port 15 and the rear drainage channel 14 tangent to the left side of the main suction port 15, and both designed in a clockwise direction, the airflow cutting direction is perfectly matched with the arc trajectory of the inner wall of the main suction port 15, which can reduce the impact loss when the airflow cuts in, and further reduce wind resistance and energy consumption.

[0054] It is understood that the double helix structure is not limited to clockwise arrangement. In other embodiments, it can also be arranged counterclockwise. For example, in another embodiment, the front drainage channel 13 is tangent to the left side of the main suction port 15 in a counterclockwise direction, and the rear drainage channel 14 is tangent to the right side of the main suction port 15 in a counterclockwise direction.

[0055] In a preferred embodiment of the present invention, the sidewall of the main suction port 15 is provided with a first communication port 16 communicating with the front drainage channel 13 and a second communication port 17 communicating with the rear drainage channel 14, and the first communication port 16 and the second communication port 17 are offset in the vertical direction.

[0056] By vertically offsetting the two airflows, a layered flow is created within the main suction port 15, preventing horizontal convergence and collision and enhancing the stability of the cyclone rotation. The internal space of the main suction port 15 is limited; if the two connecting ports are horizontally aligned, airflow and debris can easily accumulate on the same horizontal level, obstructing airflow. Furthermore, if the two connecting ports are horizontally aligned, sufficient horizontal spacing is required to avoid airflow collision, increasing the horizontal dimension of the main suction port 15 and consequently increasing the overall width of the base 10, affecting its adaptability in narrow spaces. The vertical offsetting arrangement ensures an effective distance between the two connecting ports without increasing the horizontal dimension of the main suction port 15.

[0057] In one embodiment, reference Figure 3 and Figure 4 The top of the second connecting port 17 is higher than the top of the first connecting port 16. Specifically, the second connecting port 17 can be entirely higher than the first connecting port 16, that is, the bottom of the second connecting port 17 is higher than the top of the first connecting port 16, and the two connecting ports are completely separated in the vertical direction, forming independent airflow channels at the top and bottom, eliminating cross-interference of airflow; or, the second connecting port 17 can be partially higher than the first connecting port 16, that is, the top of the second connecting port 17 is higher than the top of the first connecting port 16, and the second connecting port 17 and the first connecting port 16 partially overlap, forming a partially vertically overlapping area. The airflow on the front side and the airflow on the rear side overlap in the same direction (such as both in a clockwise direction), which is conducive to increasing the airflow speed in this area, forming a strong suction core area, and enhancing the garbage carrying capacity.

[0058] Furthermore, such as Figure 3 As shown, the main suction port 15 has a cylindrical extension height, and the main suction port 15 is inclined from bottom to top toward the rear suction port 12.

[0059] The main suction port 15 is inclined from bottom to top towards the rear suction port 12, causing the internal airflow to form an inclined flow trajectory upward and backward within the cylindrical space. After the airflow from the front drainage channel 13 enters the lower part of the main suction port 15, it flows upward and backward along the inclined direction, merging more smoothly with the airflow from the rear drainage channel 14. This design is suitable for the function of the rear roller brush for final cleaning: residual debris swept by the rear roller brush (such as debris not cleaned by the front roller brush) can be quickly captured by the strong negative pressure zone that is offset backward, preventing debris from being left in the cleaned area as the cleaning brush moves forward. The inclined main suction port 15 allows the wastewater to be supported by its inner surface during the climbing process, improving the climbing efficiency of the wastewater with the airflow. In addition, the cylindrical extension height and inclined design of the main suction port 15 provide a longer path for the cyclone airflow, which is conducive to increasing the number of collisions between solid waste (such as lumpy food scraps, dry hard crumbs) and the inner wall of the main suction port 15 and other debris in the cyclone, achieving more thorough secondary crushing and preventing the subsequent pipes from being blocked due to excessively large particles.

[0060] As a preferred embodiment of the present invention, such as Figure 3 As shown, from the front suction port 11 toward the main suction port 15, the front drainage channel 13 gradually rises along an arc-shaped trajectory, and the front suction port 11 is tangent to the horizontal direction of the front drainage channel 13; from the rear suction port 12 toward the main suction port 15, the rear drainage channel 14 gradually rises along an arc-shaped trajectory, and the rear suction port 12 is tangent to the horizontal direction of the rear drainage channel 14.

[0061] The horizontal tangential design of the front suction port 11 and rear suction port 12 with the corresponding drainage channels ensures that the direction of the intake airflow is parallel to the plane of the suction port. The airflow can naturally flow into the drainage channel along the plane of the suction port, reducing vortices in the inlet area and significantly lowering inlet air resistance. The drainage channel gradually rises, which can better form a spiral structure at the main suction port 15, making the movement of airflow and waste in the channel smoother, reducing high-frequency impacts at corners in traditional straight air ducts, and extending the service life of components.

[0062] Furthermore, the tangent of the front drainage channel 13 connected to one end of the main suction port 15 forms an obtuse angle A with the axis of the main suction port 15; the tangent of the rear drainage channel 14 connected to one end of the main suction port 15 forms an obtuse angle B with the axis of the main suction port 15.

[0063] like Figure 3 As shown, the obtuse angle design creates a wraparound angle between the tangential direction of the airflow in the drainage channel and the axis of the main suction port 15, enabling the airflow to converge into the cyclone in the correct direction and significantly reducing convergence losses. The obtuse angle also allows the airflow to enter the main suction port 15 at a greater tangential velocity, strengthening the centrifugal force field of the cyclone and improving waste entrainment and conveying efficiency. This design helps optimize the uniformity of airflow distribution at the main suction port 15, eliminates localized low-pressure dead zones, and solves the problem of waste blockage.

[0064] In a preferred embodiment of the present invention, the width of the front suction port 11 is greater than the inner diameter of the main suction port 15, one side of the front suction port 11 is tangential to one side of the corresponding front drainage channel 13, and the other side of the front suction port 11 is set at an obtuse angle to the other side of the front drainage channel 13 (forming an obtuse angle C).

[0065] like Figure 4 As shown, in this design, the width of the front suction port 11 is greater than the inner diameter of the main suction port 15, which helps to expand the front cleaning coverage area, eliminate blind spots at the edges, and improve cleaning efficiency.

[0066] One side of the front intake 11 is tangent to one side of the front drainage channel 13, allowing the airflow on that side to flow naturally into the channel along the intake plane, avoiding airflow impact. The other side of the front intake 11 forms an obtuse angle with the other side of the front drainage channel 13 (forming an obtuse angle C), which can guide the airflow on that side in a directional manner, converging the wide airflow on that side into the interior of the channel, so that the airflow in the front intake 11 smoothly transitions from a wide and dispersed state to a narrow and concentrated state, optimizing airflow stability.

[0067] Furthermore, the width of the rear suction port 12 is smaller than the inner diameter of the main suction port 15. One side of the rear suction port 12 is set at an obtuse angle to the side of the corresponding rear drainage channel 14 (forming an obtuse angle D), and the other side of the rear suction port 12 is set at an obtuse angle to the other side of the rear drainage channel 14 (forming an obtuse angle E).

[0068] The double obtuse angle design on both sides of the rear suction port 12 ensures a smooth transition of airflow from the port into the channel, without significant airflow deflection. The airflow converges smoothly in the center of the channel, preventing eddies and avoiding localized turbulence and blockages. The wide design of the front suction port 11 handles initial suction over a large area, while the narrow design of the rear suction port 12 ensures precise finishing in a smaller area. The different widths and angles of these two designs balance the airflow convergence ratio of the main suction port 15, ensuring efficient transport of large amounts of waste from the front and maintaining cyclone stability through rear airflow supplementation.

[0069] The obtuse angle setting of the aforementioned front drainage channel 13 and rear drainage channel 14 helps to reduce the horizontal space occupied by the drainage channels, thereby optimizing the spatial layout of the base 10 and achieving compact installation of core components.

[0070] Preferably, the cross-sectional area of ​​the front drainage channel 13 and / or the rear drainage channel 14 gradually decreases along the fluid flow direction, that is, the channel width of the front drainage channel 13 and / or the rear drainage channel 14 is gradually reduced, so as to increase the airflow speed, maintain a strong negative pressure in the channel, and quickly remove sewage and garbage.

[0071] The present invention also provides a floor scrubbing machine, including the cleaning brush provided in the above embodiments and examples, and a wastewater tank, wherein the wastewater tank is connected to the main suction port 15 of the cleaning brush via a connecting pipe. The floor scrubbing machine also includes a suction device (including a motor) for creating negative pressure. Under the action of negative pressure, wastewater, stains and garbage on the ground are sucked in through the front suction port 11 and the rear suction port 12, and flow into the wastewater tank via the main suction port 15 and the connecting pipe for temporary storage.

[0072] The cleaning brush and floor scrubber provided by this invention form a double-helix cyclone structure between the front suction port 11 and the main suction port 15, and between the rear suction port 12 and the main suction port 15. This allows the airflow from the front suction port 11 and the rear suction port 12 to smoothly merge into the main suction port 15 along the spiral trajectory. The airflow does not need to be forcibly changed in direction, but rather naturally merges with the rotational inertia of the cyclone. This effectively avoids the generation of airflow collisions and eddies, reduces the overall wind resistance of the air duct, and enables the main suction port 15 to maintain a stable strong negative pressure, laying the foundation for efficient cleaning.

[0073] This invention creates a continuously rotating cyclone airflow inside the main suction port 15 through a double-helix cyclone structure: on the one hand, the centrifugal force generated by the cyclone can firmly engulf solid waste in the airflow, preventing the waste from settling due to the decrease in flow velocity; on the other hand, the smoothness of the spiral trajectory allows the waste to move quickly towards the outlet of the main suction port 15 with the airflow, without any obvious stagnation area. Therefore, it solves the problem of waste blockage in the main suction port 15 and the drainage channel, and can greatly extend the service life of the cleaning brush.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A floor cleaning brush, characterized in that, include: Base; A front roller brush is disposed at the front end of the base, and the front end of the base is provided with a front suction port facing the front roller brush; A rear roller brush is disposed at the rear end of the base, and the rear end of the base is provided with a rear suction port facing the rear roller brush; A flow-guiding component is disposed on the base and located between the front suction port and the rear suction port. The flow-guiding component includes a front flow-guiding channel, a rear flow-guiding channel and a main suction port. One end of the front flow-guiding channel is connected to the front suction port and the other end is connected to the main suction port to form a spiral channel. One end of the rear flow-guiding channel is connected to the rear suction port and the other end is connected to the main suction port to form a spiral channel. From the front suction port toward the main suction port, the front drainage channel gradually rises along an arc-shaped trajectory; from the rear suction port toward the main suction port, the rear drainage channel gradually rises along an arc-shaped trajectory; the main suction port has a cylindrical extension height; and the main suction port is inclined from bottom to top toward the rear suction port. The main suction port is provided with a first connecting port that communicates with the front drainage channel and a second connecting port that communicates with the rear drainage channel. The first connecting port and the second connecting port are offset in the vertical direction.

2. The floor cleaning brush according to claim 1, characterized in that, The main suction port has a front side facing the front suction port, a rear side facing the rear suction port, and a left and right side that are relatively distributed between the front and rear sides; The front drainage channel is tangent to the right side of the main suction port in a clockwise direction, and the rear drainage channel is tangent to the left side of the main suction port in a clockwise direction; Alternatively, the front drainage channel is tangent to the left side of the main suction port in a counterclockwise direction, and the rear drainage channel is tangent to the right side of the main suction port in a counterclockwise direction.

3. The floor cleaning brush according to claim 1, characterized in that, The top of the second connection port is set higher than the top of the first connection port.

4. The floor cleaning brush according to claim 1, characterized in that, The front suction port is tangent to the horizontal direction of the front drainage channel; The rear suction port is tangent to the horizontal direction of the rear drainage channel.

5. The floor cleaning brush according to claim 4, characterized in that, The tangent of the front drainage channel connected to one end of the main suction port forms an obtuse angle with the axis of the main suction port; The tangent of the rear drainage channel connected to one end of the main suction port forms an obtuse angle with the axis of the main suction port.

6. The floor cleaning brush according to any one of claims 1 to 5, characterized in that, The width of the front suction port is greater than the inner diameter of the main suction port. One side of the front suction port is tangent to one side of the corresponding front drainage channel, and the other side of the front suction port is set at an obtuse angle to the other side of the front drainage channel. The width of the rear suction port is smaller than the inner diameter of the main suction port. One side of the rear suction port is set at an obtuse angle to the side of the corresponding rear drainage channel, and the other side of the rear suction port is set at an obtuse angle to the other side of the rear drainage channel.

7. The floor cleaning brush according to claim 6, characterized in that, The cross-sectional area of ​​the front drainage channel and / or the rear drainage channel gradually decreases along the fluid flow direction.

8. A floor scrubbing machine, characterized in that, It includes a wastewater tank and a cleaning brush as described in any one of claims 1 to 7, wherein the wastewater tank is connected to the main suction port of the cleaning brush via a connecting pipe.

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