A floor brush module for a cleaning machine and the cleaning machine

Abstract

This invention relates to a floor brush module for a cleaning machine and the cleaning machine itself. The floor brush module has an internal airflow channel within its housing, and also includes a suction chamber and an exhaust port. The brush head of the cleaning component is rotatably mounted within the suction chamber, and its bottom has a brush member that can abut against the surface to be cleaned. A driver in a first driving mechanism can drive a lifting seat to move up and down relative to the mounting cavity. Since the brush member in the cleaning component is connected to the lifting seat, when the lifting seat moves, the brush member moves synchronously relative to the suction chamber, thereby changing whether it contacts the surface to be cleaned. Furthermore, since a baffle is partially located on the flow path of the fluid within the airflow channel and is also connected to the lifting seat, the movement of the lifting seat can drive the baffle to move within the airflow channel, thus synchronously changing the airflow area within the airflow channel, thereby automatically adjusting the air intake volume in the corresponding washing mode.

Description

Technical Field

[0001] This invention relates to the field of household cleaning tools, specifically to a floor brush module for a cleaning machine and a cleaning machine. Background Technology

[0002] With the development of household cleaning technology, household cleaning equipment has become increasingly diversified, and more and more cleaning devices have entered thousands of households. Traditional vacuum cleaners have certain limitations in their use. The structural design and sealing of their components can only meet the requirements of dry environments, but not wet environments. In a wet environment, the wastewater carried by the suction airflow will inevitably seep into the motor under the action of negative pressure. Once water enters the motor through the gaps in the motor housing, it can easily lead to motor failure and damage.

[0003] Clearly, cleaning machines that can only vacuum dust but not water cannot meet consumer needs. Therefore, some companies have developed floor scrubbers that can be used in both dry and wet environments, particularly improving the dust collection bin to better separate wet and dry waste, thus preventing water vapor from flowing towards the negative pressure source. For example, Chinese invention application CN202010568160.1 (publication announcement number: CN111820816A) discloses "A Water Scrubber Dry and Wet Dual-Use Wastewater Tank Assembly." This assembly features a wastewater inlet pipe at the bottom of the wastewater tank, a filter assembly placed inside the tank and fitted onto the inlet pipe, and a tank cover assembly installed on the tank. After the mixed fluid passes through the wastewater tank, the liquid and solid components remain in the tank, while the airflow continues downstream towards the negative pressure source. An air outlet is located at the end of the floor scrubber's air path, on the outer shell of the blower module, and the airflow drawn in by the negative pressure is ultimately discharged through the outlet.

[0004] The aforementioned cleaning machines rely solely on negative pressure as their primary suction source, which is insufficient for effectively cleaning stubborn stains. Furthermore, due to the limited rotation of the roller brush, water sprayed onto the surface is only used once or twice before being sucked away by the negative pressure, resulting in relatively limited cleaning effectiveness. Moreover, for large particles and hair frequently encountered during cleaning, the roller brush's involvement not only fails to contribute to negative pressure but may also cause blockages and hair entanglement. Additionally, existing cleaning machines do not allow users to actively select brush head engagement modes based on specific cleaning needs, nor can they adaptively adjust the suction volume and intensity, leading to reduced cleaning efficiency in environments requiring only negative pressure. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is to provide a floor brush module for cleaning machines that allows the brush head module to be raised and lowered to flexibly switch negative pressure modes and can automatically adapt to the air volume, in light of the current state of the prior art.

[0006] The second technical problem to be solved by the present invention is to provide a cleaning machine having the above-mentioned floor brush module, in view of the current state of the prior art.

[0007] The technical solution adopted by the present invention to solve the first technical problem mentioned above is: a floor brush module for a cleaning machine, comprising:

[0008] The housing has an internal airflow channel, and the housing also has a downward-facing dust collection chamber on the front side of the direction of travel of the floor brush module. The housing also has an exhaust port. The dust collection chamber, airflow channel and exhaust port are arranged in sequence along the direction of airflow. The housing also has an installation cavity.

[0009] A cleaning assembly having a brush head for sweeping a surface to be cleaned, the brush head being rotatably disposed within the suction chamber, and having a brush member at its bottom that can abut against the surface to be cleaned;

[0010] The lifting seat is located inside the mounting cavity and is arranged to move up and down relative to the mounting cavity. The brush head is connected to the lifting seat and can move upward synchronously with the lifting seat in the dust collection cavity under the drive of the lifting seat to detach from the surface to be cleaned, or move downward until the brush part abuts against the surface to be cleaned.

[0011] A first drive mechanism includes a driver, the power output end of which is connected to the lifting seat drive; and

[0012] The flow deflector is partially located on the flow path of the fluid in the air guide channel, and the flow deflector is connected to the lifting seat and can move upward or downward synchronously with the lifting seat, thereby correspondingly increasing or decreasing the air guide area of ​​the air guide channel.

[0013] To ensure that the airflow entering the dust collection chamber can be smoothly discharged, preferably, the housing has an air guide housing and an air guide sleeve arranged sequentially from front to back, wherein the air guide sleeve is hollow to form a cavity, and the inlet end of the cavity is connected to the outlet end of the air guide housing, thereby forming the air guide channel.

[0014] To ensure smooth airflow, preferably, the distance between the two side walls of the air guide sleeve gradually decreases from front to back, and the distance between its upper and lower end walls gradually increases from front to back.

[0015] In order to facilitate the simultaneous lifting and lowering of the lifting seat and the synchronous movement of the baffle, and to adjust the opening of the air guide channel at the same time, preferably, the baffle is a side plate arranged on the rear side of the lifting seat and extending vertically. The side plate is at least partially located above the air guide sleeve, and the top of the air guide sleeve has a through hole for the side plate to extend into.

[0016] Specifically, the front side of the air guide housing is hollow and the bottom opening forms the dust suction chamber. The rear side of the air guide housing has a connecting seat, and the front end of the air guide sleeve is connected to the connecting seat.

[0017] To ensure that the brush head can rotate normally while it is being raised and lowered, preferably, the cleaning assembly also includes a second drive mechanism disposed in the housing and used to drive the brush head to rotate. The second drive mechanism is mounted on the lifting base and can move up and down synchronously with the brush head it drives.

[0018] To ensure that the lifting seat moves up and down along a fixed track each time, preferably, the front side of the housing has a vertically penetrating guide channel, and the lifting seat has a guide sleeve constrained within the guide channel.

[0019] To ensure that the lifting action does not affect the rotation of the brush itself, preferably, the guide sleeve is hollow inside to form an upward-facing groove, the second drive mechanism is assembled in the groove, and its output shaft extends downward into the dust collection chamber, and the brush head is connected to the output shaft of the second drive mechanism.

[0020] Specifically, the top wall of the dust collection chamber has an opening, and the periphery of the opening has an upwardly extending annular wall. The interior of the annular wall is vertically connected to the opening of the top wall of the dust collection chamber to form the guide channel.

[0021] To prevent excessive wear of the brush due to excessive descent of the lifting seat, preferably, the lifting seat also has a limiting plate, the guide sleeve is disposed on the limiting plate, and when the lifting seat moves downward to its limit state, the bottom of the limiting plate abuts against the upper end of the ring wall.

[0022] To ensure that the floor brush module has a sufficient sweeping area, preferably, the air guide housing has at least two side-by-side suction chambers in the width direction of the housing, the cleaning component has at least two brush heads, each brush head is arranged in a corresponding suction chamber, and the lifting seat has at least two guide sleeves, each guide sleeve is arranged in its corresponding guide channel.

[0023] Specifically, the limiting plate extends along the arrangement direction of each dust suction chamber, and each guide sleeve is arranged at intervals on the limiting plate.

[0024] There are various specific structures for implementing lifting drive. Preferably, the first drive mechanism further includes a cam, which is rotatably connected to the output shaft of the driver, and the protrusion on its outer peripheral wall can intermittently abut against the lifting seat, thereby forcing the lifting seat to move upward or downward.

[0025] The cam can only drive the lifting seat to move in one direction, either upward or downward. To avoid adding components that move in the opposite direction, the cam is preferably located below the lifting seat. The rotation of the cam can act intermittently on the lifting seat, thereby forcing the lifting seat to move upward against its own weight.

[0026] To ensure the lifting seat moves the brush head up and down, thus switching the floor brush module mode, the outer peripheral wall of the cam, excluding the protrusion, is rounded. An intermediate section between the protrusion and the rounded section provides a smooth transition. The cam can rotate so that the protrusion, the intermediate section, and the rounded section respectively abut against the lifting seat, thereby moving the lifting seat to three positions at different heights from the surface to be cleaned.

[0027] In the first use state, the protrusion abuts against the lifting seat so that the lifting seat moves upward to the limit position and the distance between it and the surface to be cleaned is the maximum, so that there is a gap between the brush head and the cleaning surface to form a flow channel. The baffle moves upward to the maximum opening of the air guide channel. The brush can be rotatably arranged on the flow path of the fluid in the flow channel under the drive of the brush head.

[0028] In the second usage state, the smooth part abuts against the lifting seat so that the lifting seat moves downward to the limit position and the distance between it and the surface to be cleaned is minimized, thereby maximizing the abutment force of the brush against the cleaning surface, and the baffle moves downward to the minimum opening of the air guide channel;

[0029] In the third usage state, the middle part abuts against the lifting seat, so that the lifting seat moves between the upper limit position and the lower limit position, and the baffle moves to block the local area of ​​the air guide channel.

[0030] Because the lifting platform can switch between three states, the brush head moves synchronously with the lifting platform, thus creating three different positional relationships with the ground. When the lifting platform is in its first operating state, the entire cleaning machine switches to a dedicated dry suction mode. This mode is suitable for cleaning larger debris, particles, and a lot of hair. Because the brushes on the brush head are no longer in direct contact with the ground, but are "suspended" due to the lifting mechanism, they are positioned within the airflow channel formed between the brush head and the surface to be cleaned. Therefore, the rotation of the brushes acts like a small fan, creating an air cyclone within the corresponding suction chamber, thereby further enhancing suction power. At the same time, the rise of the brush head also creates sufficient negative pressure space within the suction chamber, forming a separate airflow channel at the bottom of the suction chamber. In this way, the brush head and its brushes no longer occupy most of the airflow space within the suction chamber. Thus, while the brushes increase the airflow, their avoidance also prevents common suction problems such as hair entanglement and large particle blockage. Furthermore, since the baffle rises to the top simultaneously with the lifting platform, the airflow within the entire airflow channel reaches its maximum, which is beneficial for suctioning large particles. When the lifting seat is in the second usage state, the brush head descends to its lowest point, making contact with the bottom surface. Since the cleaning machine usually uses water as a cleaning agent, the baffle will descend to its lowest point along with the lifting seat, thus creating maximum obstruction to the airflow channel. This increases the suction power generated by the negative pressure, but minimizes the airflow. Since strong suction is more conducive to water absorption, and minimal airflow allows the water in the suction chamber to fully contact the surface to be cleaned, achieving a better cleaning effect. When the lifting seat is in the third usage state, its cleaning state is between the first and second usage states.

[0031] To facilitate the assembly of the driver and the cam, preferably, a support frame is also provided in the mounting cavity, on which the cam and the driver are both mounted and arranged in a front-to-back manner.

[0032] Specifically, the support frame has two legs arranged opposite each other, one of which has a groove on its top for mounting a driver, and the other leg has a rotating shaft on its side wall for mounting a cam, and the output shaft of the driver is coaxial with the rotating shaft.

[0033] The brush head can have different structural forms. Preferably, the brush head is disc-shaped, and the brush element is a flexible scraper disposed at the bottom of the brush head.

[0034] To ensure the sweeping effect, preferably, the brush head is provided with at least two flexible scrapers, each of which extends radially along the brush head and is arranged at intervals in the circumferential direction of the brush head.

[0035] For convenient ventilation, preferably, the housing also has a steering joint on the rear side of the ground brush module in the direction of travel, the exhaust port is set on the steering joint, and the outlet end of the air guide sleeve is connected to the inlet end of the steering joint.

[0036] To further solve the second technical problem mentioned above, the technical solution adopted by the present invention is as follows: a cleaning machine having the above-mentioned floor brush module, further including a fan module and a separation module for separating a mixture of water and dust, wherein the separation module is located between the floor brush module and the fan module along the airflow path, and the floor brush module, the separation module and the fan module are in fluid communication.

[0037] Compared with the prior art, the advantages of the present invention are as follows: In the floor brush module for the cleaning machine, the driver in the first drive mechanism can drive the lifting seat to move up and down relative to the mounting cavity. Since the brush in the cleaning component is connected to the lifting seat, when the lifting seat moves, the brush can move synchronously relative to the suction cavity, thereby changing whether it contacts the surface to be cleaned. In addition, since the baffle is partially located on the flow path of the fluid in the air guide channel and is also connected to the lifting seat, the movement of the lifting seat can drive the baffle to move in the air guide channel, thus synchronously changing the air guide area in the air guide channel, thereby automatically adjusting the air intake volume in the corresponding washing mode. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall structure of the floor brush module in an embodiment of the present invention;

[0039] Figure 2 for Figure 1 A sectional view from the first angle;

[0040] Figure 3 for Figure 1 A sectional view from a second angle;

[0041] Figure 4 for Figure 1 A sectional view from a third angle;

[0042] Figure 5 This is a schematic diagram of fluid flow in the air guide channel;

[0043] Figure 6 This is an overall cross-sectional view of the floor brush module in an embodiment of the present invention (with the lifting seat in the first usage state);

[0044] Figure 7 This is an overall cross-sectional view of the floor brush module in an embodiment of the present invention (with the lifting seat in the second usage state);

[0045] Figure 8 This is an overall cross-sectional view of the floor brush module in an embodiment of the present invention (the lifting seat is in the third usage state);

[0046] Figure 9 This is a schematic diagram of the overall shape of the cam in an embodiment of the present invention;

[0047] Figure 10 This is a schematic diagram of the overall cleaning machine in an embodiment of the present invention. Detailed Implementation

[0048] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0049] like Figures 1 to 10 The diagram illustrates a preferred embodiment of the present invention. In this embodiment, the floor brush module includes a housing 1, a cleaning component, a lifting base 3, a first drive mechanism, and a baffle 5. The housing 1 has an internal airflow channel 10, and a downward-opening dust collection chamber 1a on the front side of the floor brush module 01 in the direction of travel. The housing 1 also has an exhaust port 1b. The dust collection chamber 1a, the airflow channel 10, and the exhaust port 1b are arranged sequentially along the airflow direction. The housing 1 also has an installation cavity 1c. In this embodiment, the housing 1 has an airflow guide housing 16 and an airflow guide sleeve 15 arranged sequentially from front to back. The airflow guide sleeve 15 is hollow, forming a cavity. The inlet end of the cavity is connected to the outlet end of the airflow guide housing 16, thereby forming the airflow channel 10. In this embodiment, the front side of the air guide housing 16 is hollow and the bottom opening forms a dust suction chamber 1a. The rear side of the air guide housing 16 has a connecting seat 121, and the front end of the air guide sleeve 15 is connected to the connecting seat 121. The housing 1 also has a steering joint 14 on the rear side of the floor brush module 01 in the direction of travel. The exhaust port 1b is set on the steering joint 14, and the outlet end of the air guide sleeve 15 is connected to the inlet end of the steering joint 14.

[0050] The floor brush module in this embodiment is applicable to a cleaning machine. Taking a floor scrubber as an example, the cleaning machine also includes a fan module 03 and a separation module 02 for separating the mixture of water and dust. Along the airflow path, the separation module 02 is located between the floor brush module 01 and the fan module 03, and the floor brush module, the separation module 02 and the fan module 03 are in fluid communication.

[0051] To ensure cleaning effectiveness, the aforementioned cleaning assembly includes a brush head 2 for sweeping the surface to be cleaned. The brush head 2 is rotatably disposed within the suction chamber 1a, and its bottom has a brush member 20 that can abut against the surface to be cleaned. In this embodiment, the brush head 2 is disc-shaped, and the brush member 20 is a flexible scraper disposed at the bottom of the brush head 2. At least two flexible scrapers are provided on the brush head 2, each extending radially along the brush head 2 and spaced apart circumferentially.

[0052] In this embodiment, the lifting seat 3 is located within the mounting cavity 1c and is arranged to move up and down relative to the mounting cavity 1c. The brush head 2 is connected to the lifting seat 3 and, driven by the lifting seat 3, can move upward synchronously with the lifting seat 3 within the suction chamber 1a to disengage from the surface to be cleaned, or move downward until the brush 20 abuts against the surface to be cleaned. The first drive mechanism has a driver 41, the power output end of which is connected to the lifting seat 3 to drive the lifting seat 3 to move upward or downward. To ensure that the rotation of the brush head 2 is not affected while accommodating the lifting, the cleaning assembly in this embodiment also includes a second drive mechanism 21 located within the housing 1 and used to drive the rotation of the brush head 2. The second drive mechanism 21 is mounted on the lifting seat 3 and can move up and down synchronously with the brush head 2 it drives.

[0053] To ensure smooth lifting, the front of the housing 1 has a vertically penetrating guide channel 11, and the lifting seat 3 has a guide sleeve 31 constrained within the guide channel 11. Specifically, the guide sleeve 31 is hollow inside, forming an upward-opening groove 32. The second drive mechanism 21 is assembled in the groove 32, and its output shaft extends downward into the suction chamber 1a. The brush head 2 is connected to the output shaft of the second drive mechanism 21. Specifically, the top wall of the suction chamber 1a has an opening, and the periphery of the opening has an upward-extending annular wall 12. The interior of the annular wall 12 is vertically connected to the opening of the top wall of the suction chamber 1a to form the guide channel 11. In addition, the lifting seat 3 also has a limiting plate 33, and the guide sleeve 31 is disposed on the limiting plate 33. When the lifting seat 3 moves downward to its limit, the bottom of the limiting plate 33 abuts against the upper end of the annular wall 12. In this embodiment, the air guide housing 16 has at least two side-by-side suction chambers 1a in the width direction of the housing 1, the cleaning component has at least two brush heads 2, each brush head 2 is arranged in the corresponding suction chamber 1a, and the lifting seat 3 has at least two guide sleeves 31, each guide sleeve 31 is arranged in its corresponding guide channel 11, and the limiting plate 33 extends along the arrangement direction of each suction chamber 1a, and each guide sleeve 31 is spaced apart on the limiting plate 33.

[0054] In this embodiment, in order to simultaneously control the airflow while raising and lowering the brush head 2, the aforementioned baffle 5 is partially located on the flow path of the fluid within the air guide channel 10. The baffle 5 is connected to the lifting seat 3 and can move upwards or downwards synchronously with the lifting seat 3, thereby correspondingly increasing or decreasing the air guide area of ​​the air guide channel 10. In this embodiment, the distance between the two side walls of the air guide sleeve 15 gradually decreases from front to back, while the distance between its upper and lower end walls gradually increases from front to back. The baffle 5 is a side plate arranged on the rear side of the lifting seat 3 and extending vertically. This side plate is at least partially located above the air guide sleeve 15, and the top of the air guide sleeve 15 has a through hole 50 for the side plate to extend into.

[0055] Of course, there are multiple ways to move the lifting seat 3 up and down using the driver 41. In this embodiment, the first driving mechanism also includes a cam 42. The cam 42 is rotatably connected to the output shaft of the driver 41, and the protrusion 42a on its outer peripheral wall can intermittently abut against the lifting seat 3, thereby forcing the lifting seat 3 to move upward or downward. For ease of driving, the cam 42 is arranged below the lifting seat 3. The rotation of the cam 42 can intermittently act on the lifting seat 3, thereby forcing the lifting seat 3 to move upward against its own gravity. In this embodiment, the outer peripheral wall of the cam 42, excluding the protrusion 42a, is a smooth portion 42c. There is an intermediate portion 42b between the protrusion 42a and the smooth portion 42c for smooth transition. The cam 42 can rotate until the protrusion 42a, the intermediate portion 42b, and the smooth portion 42c abut against the lifting seat 3 respectively, thereby moving the lifting seat 3 to three positions at different heights from the surface to be cleaned.

[0056] In the first use state, the protrusion 42a abuts against the lifting seat 3 so that the lifting seat 3 moves upward to the limit position and the distance between it and the surface to be cleaned is the largest, so that the brush head 2 and the cleaning surface are separated to form a flow channel. The baffle 5 moves upward to the maximum opening of the air guide channel 10. The brush 20 is rotatably arranged on the flow path of the fluid in the flow channel under the drive of the brush head 2.

[0057] In the second usage state, the smooth part 42c abuts against the lifting seat 3 so that the lifting seat 3 moves down to the limit position and the distance between it and the surface to be cleaned is minimized, thereby maximizing the contact force between the brush 20 and the cleaning surface, and the baffle 5 moves down to the minimum opening of the air guide channel 10.

[0058] In the third usage state, the middle part 42b abuts against the lifting seat 3, so that the lifting seat 3 moves between the upper limit position and the lower limit position, and the baffle 5 moves to block the local area of ​​the air guide channel 10.

[0059] Because the lifting seat 3 can switch between three states, the brush head 2 moves synchronously with the lifting seat 3, thus creating three different positional relationships with the ground. When the lifting seat 3 is in its first operating state, the entire cleaning machine switches to a dedicated dry suction mode. This mode is suitable for cleaning larger debris, particles, and a lot of hair. Since the brush components 20 on the brush head 2 are no longer in direct contact with the ground, but are "suspended" due to the lifting mechanism and located within the flow channel formed between the brush head 2 and the surface to be cleaned, the rotation of the brush components 20 at this time acts like a small fan, creating an air cyclone within the corresponding suction chamber 1a, further enhancing suction power. Simultaneously, the rising of the brush head 2... It can also create sufficient negative pressure space within the suction chamber 1a on the basis of the original air path, thereby forming a separate flow channel in the lower part of the suction chamber 1a. In this way, the brush head 2 and the brush parts 20 on it no longer occupy most of the air path space in the suction chamber 1a. Therefore, while the brush parts 20 increase the cyclone, their avoidance can also avoid common suction problems such as hair entanglement and large particle blockage. In addition, since the baffle 5 will rise to the top at the same time as the lifting seat 3, the air flow in the entire air guide channel 10 reaches the maximum, which is beneficial for suction of large particles. When the lifting seat 3 is in the second use state, the brush head 2 descends to its lowest point and comes into contact with the bottom surface. Since the cleaning machine usually uses water as a cleaning agent, the baffle 5 descends to its lowest point along with the lifting seat 3, thus creating maximum obstruction to the airflow channel 10. This increases the suction force generated by the negative pressure, but minimizes the flow rate. Since the strong suction force is more conducive to water absorption, and the minimum flow rate allows the water in the suction chamber 1a to fully contact the surface to be cleaned, thereby achieving a better cleaning effect. When the lifting seat 3 is in the third use state, its cleaning state is between the first and second use states.

[0060] Furthermore, to facilitate the installation of the cam 42 and the driver 41, a support frame 13 is also provided in the aforementioned mounting cavity 1c. The cam 42 and the driver 41 are both mounted on the support frame 13 and arranged front to back. Specifically, the support frame 13 has two legs 131 arranged front to back. The top of one leg 131 has a groove 132 for mounting the driver 41, while the side wall of the other leg 131 is provided with a rotating shaft for passing through the cam 42, and the output shaft of the driver 41 is coaxial with the rotating shaft.

[0061] The term "fluid connectivity" as used in this invention refers to the spatial relationship between two components or parts (hereinafter referred to as the first part and the second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow from the first part along a flow path and / or be transported to the second part. This can be a direct connection between the first part and the second part, or an indirect connection between the first part and the second part through at least one third party. This third party can be a fluid channel such as a pipe, channel, conduit, guide, hole, or groove, or a chamber or combination thereof that allows fluid to flow through.

[0062] Furthermore, the specification and claims of this invention use terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," to describe various exemplary structural parts and elements of the invention. However, these terms are used herein merely for ease of explanation and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this invention can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A floor brush module for a cleaning machine, comprising: The housing (1) has an air guide channel (10) inside. The housing (1) also has a downward-facing dust suction chamber (1a) on the front side of the direction of travel of the floor brush module (01). The housing (1) also has an exhaust port (1b). The dust suction chamber (1a), the air guide channel (10) and the exhaust port (1b) are arranged in sequence along the direction of airflow. The housing (1) also has an installation cavity (1c). The cleaning assembly has a brush head (2) for sweeping the surface to be cleaned, the brush head (2) being rotatably disposed in the suction chamber (1a) and having a brush part (20) at its bottom that can abut against the surface to be cleaned. Its characteristic is that it further includes: The lifting seat (3) is located in the mounting cavity (1c) and is arranged to move up and down relative to the mounting cavity (1c). The brush head (2) is connected to the lifting seat (3) and can move upward synchronously with the lifting seat (3) in the dust suction cavity (1a) under the drive of the lifting seat (3) to detach from the contact with the surface to be cleaned, or move downward until the brush (20) abuts against the surface to be cleaned. A first drive mechanism has a driver (41), the power output end of which is drivenly connected to the lifting seat (3); and The baffle (5) is located partially on the flow path of the fluid in the air guide channel (10), and the baffle (5) is connected to the lifting seat (3) and can move upward or downward synchronously with the lifting seat (3), thereby correspondingly increasing or decreasing the air guide area of ​​the air guide channel (10).

2. The floor brush module according to claim 1, characterized in that: The housing (1) has an air guide housing (16) and an air guide sleeve (15) arranged sequentially from front to back, wherein the air guide sleeve (15) is hollow to form a cavity, and the inlet end of the cavity is connected to the outlet end of the air guide housing (16), thereby forming the air guide channel (10).

3. The floor brush module according to claim 2, characterized in that: The distance between the two side walls of the air guide sleeve (15) gradually decreases from front to back, and the distance between its upper and lower end walls gradually increases from front to back.

4. The floor brush module according to claim 3, characterized in that: The baffle (5) is a side plate arranged on the rear side of the lifting seat (3) and extending vertically. The side plate is at least partially located above the air guide sleeve (15), and the top of the air guide sleeve (15) is provided with a through hole (50) for the side plate to extend into.

5. The floor brush module according to claim 4, characterized in that: The front side of the air guide housing (16) is hollow and the bottom opening forms the dust suction chamber (1a). The rear side of the air guide housing (16) has a connecting seat (121), and the front end of the air guide sleeve (15) is connected to the connecting seat (121).

6. The floor brush module according to claim 2, characterized in that: The cleaning assembly also includes a second drive mechanism (21) disposed in the housing (1) and used to drive the brush head (2) to rotate. The second drive mechanism (21) is mounted on the lifting seat (3) and can move up and down synchronously with the brush head (2) it drives.

7. The floor brush module according to claim 6, characterized in that: The front side of the housing (1) has a vertically penetrating guide channel (11), and the lifting seat (3) has a guide sleeve (31) constrained within the guide channel (11).

8. The floor brush module according to claim 7, characterized in that: The guide sleeve (31) is hollow inside to form an upward-facing groove (32). The second drive mechanism (21) is assembled in the groove (32) and its output shaft extends downward into the dust collection chamber (1a). The brush head (2) is connected to the output shaft of the second drive mechanism (21).

9. The floor brush module according to claim 8, characterized in that: The top wall of the suction chamber (1a) has an opening, and the periphery of the opening has an upwardly extending annular wall (12). The interior of the annular wall (12) is vertically connected to the opening of the top wall of the suction chamber (1a) to form the guide channel (11).

10. The floor brush module according to claim 9, characterized in that: The lifting seat (3) also has a limiting plate (33), and the guide sleeve (31) is disposed on the limiting plate (33). When the lifting seat (3) moves downward to the limit state, the bottom of the limiting plate (33) abuts against the upper end of the ring wall (12).

11. The floor brush module according to claim 10, characterized in that: The air guide housing (16) has at least two side-by-side suction chambers (1a) in the width direction of the housing (1), the cleaning component has at least two brush heads (2), each brush head (2) is arranged in the corresponding suction chamber (1a), and the lifting seat (3) has at least two guide sleeves (31), each guide sleeve (31) is arranged in its corresponding guide channel (11).

12. The floor brush module according to claim 11, characterized in that: The limiting plate (33) extends along the arrangement direction of each dust suction chamber (1a), and each guide sleeve (31) is arranged at intervals on the limiting plate (33).

13. The floor brush module according to claim 12, characterized in that: The first drive mechanism also includes a cam (42), which is rotatably connected to the output shaft of the driver (41), and the protrusion (42a) on its outer peripheral wall can intermittently abut against the lifting seat (3), thereby forcing the lifting seat (3) to move upward or downward.

14. The floor brush module according to claim 13, characterized in that: The cam (42) is arranged below the lifting seat (3). The rotation of the cam (42) can intermittently act on the lifting seat (3), thereby forcing the lifting seat (3) to move upward against its own gravity.

15. The floor brush module according to claim 14, characterized in that: The outer peripheral wall of the cam (42) is a smooth portion (42c) except for the protrusion (42a). There is an intermediate portion (42b) between the protrusion (42a) and the smooth portion (42c) for smooth transition. The cam (42) can rotate so that the protrusion (42a), the intermediate portion (42b) and the smooth portion (42c) respectively abut against the lifting seat (3), thereby moving the lifting seat (3) to three positions at different heights from the surface to be cleaned: In the first use state, the protrusion (42a) abuts against the lifting seat (3) so that the lifting seat (3) moves upward to the limit position and the distance between it and the surface to be cleaned is the largest, so that the brush head (2) and the cleaning surface are separated to form a flow channel. The baffle (5) moves upward to the maximum opening of the air guide channel (10). The brush (20) is rotatably arranged on the flow path of the fluid in the flow channel under the drive of the brush head (2). In the second usage state, the smooth part (42c) abuts against the lifting seat (3) so that the lifting seat (3) moves down to the limit position and the distance between it and the surface to be cleaned is minimized, so that the brush (20) abuts against the cleaning surface with the maximum force, and the baffle (5) moves down to the minimum opening of the air guide channel (10); In the third usage state, the middle part (42b) abuts against the lifting seat (3) so that the lifting seat (3) moves between the upper limit position and the lower limit position, and the baffle (5) moves to block the local area of ​​the air guide channel (10).

16. The floor brush module according to claim 15, characterized in that: The mounting cavity (1c) is also provided with a support frame (13), and the cam (42) and the driver (41) are both provided on the support frame (13) and arranged in a front-to-back manner.

17. The floor brush module according to claim 16, characterized in that: The support frame (13) has two legs (131) arranged opposite to each other. One of the legs (131) has a groove (132) on its top for mounting the driver (41), while the other leg (131) has a rotating shaft on its side wall for passing through the cam (42), and the output shaft of the driver (41) is coaxial with the rotating shaft.

18. The floor brush module according to claim 1, characterized in that: The brush head (2) is disc-shaped, and the brush component (20) is a flexible scraper disposed at the bottom of the brush head (2).

19. The floor brush module according to claim 18, characterized in that: The brush head (2) is provided with at least two flexible scrapers, each of which extends radially along the brush head (2) and is arranged at intervals in the circumferential direction of the brush head (2).

20. The floor brush module according to claim 2, characterized in that: The housing (1) also has a steering joint (14) on the rear side of the direction of travel of the floor brush module (01), the exhaust port (1b) is provided on the steering joint (14), and the outlet end of the air guide sleeve (15) is connected to the inlet end of the steering joint (14).

21. A cleaning machine comprising a floor brush module as described in any one of claims 1 to 20, characterized in that: It also includes a fan module (03) and a separation module (02) for separating water and dust mixtures. The separation module (02) is located between the floor brush module (01) and the fan module (03) along the airflow path, and the floor brush module, the separation module (02) and the fan module (03) are in fluid communication.

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