Floor scrubber and dirt cleaning method of dirt suction system

Abstract

The invention discloses a scrubber and a sewage suction system sewage cleaning method, and belongs to the technical field of cleaning equipment. The scrubber comprises a machine shell, and a rolling brush system, a water spraying system, a dirt suction system and a power supply system are arranged in the machine shell. The sewage suction system is composed of a sewage suction opening, a corrugated pipe, a sewage tank and a vacuum motor, the sewage suction opening is located in the bottom side of the machine shell, the corrugated pipe, the sewage tank and the vacuum motor are arranged in the machine shell, the two ends of the corrugated pipe are connected with the sewage suction opening and a sewage inlet of the sewage tank respectively, and the negative pressure end of the vacuum motor is connected with the air exhaust end of the sewage tank. The device is characterized in that an elastic vibration transmission mechanism and a vibration motor are additionally arranged, the elastic vibration transmission mechanism is arranged on the peripheral side of the corrugated pipe, and the vibration motor applies radial vibration to the corrugated pipe through the elastic vibration transmission mechanism to achieve cleaning of a pipe wall groove. In addition, a noise reduction sleeve and a noise reduction material can be arranged to reduce vibration noise. The rolling brush system is detachably installed, and a power supply system battery is detachable. The floor scrubber is reasonable in structure, good in sewage cleaning effect, low in noise and convenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning equipment, and particularly relates to a floor washer and a method for cleaning a sewage suction system. Background Art

[0002] During the cleaning process of traditional floor washers, the inner wall of the corrugated pipe of the sewage suction system is easily adhered with residues due to impurities such as stains and hairs. Especially, it is difficult to remove them through conventional water flow or air flow at the pipe wall grooves. Long-term use may lead to pipe blockage, generation of peculiar smell, reduction of sewage suction efficiency, and even equipment failure. In addition, the brush roller system of existing floor washers is usually fixedly installed, and the equipment needs to be disassembled as a whole during maintenance, and the operations of cleaning or replacing the brush roller are cumbersome; the power supply system mostly adopts a fixed battery or an independent power supply mode for multiple systems, and there are problems such as limited battery life and inconvenient charging. Therefore, there is an urgent need to design a floor washer that can efficiently clean sewage, is convenient for maintenance, has low noise, and has flexible battery life to solve the above deficiencies in the prior art. Summary of the Invention

[0003] To overcome the above deficiencies in the prior art, the purpose of the present invention is to provide a floor washer and a method for cleaning a sewage suction system.

[0004] To achieve the above purpose and other related purposes, the technical solution provided by the present invention is: a floor washer, including a machine shell, a brush roller system, a sewage suction system, and a power supply system are provided in the machine shell. The sewage suction system is composed of a sewage suction port, a corrugated pipe, a sewage tank, and a vacuum motor. The sewage suction port is arranged at the bottom side of the machine shell. The corrugated pipe, the sewage tank, and the vacuum motor are all arranged in the machine shell. One end of the corrugated pipe is connected to the sewage suction port, and the other end of the corrugated pipe is connected to the sewage inlet of the sewage tank. The negative pressure end of the vacuum motor is connected to the air extraction end of the sewage tank. The floor washer further includes an elastic vibration transmission mechanism and a vibration motor. The elastic vibration transmission mechanism is arranged on the periphery of the corrugated pipe, and the vibration motor is arranged in the machine shell. The vibration motor applies radial vibration to the corrugated pipe through the elastic vibration transmission mechanism to achieve the sewage cleaning effect in the pipe wall grooves.

[0005] The preferred technical solution is: the elastic vibration transmission mechanism is composed of a sleeve and multiple groups of springs. The sleeve is sleeved on the outer periphery of the corrugated pipe. Multiple groups of springs are arranged on the outer periphery of the corrugated pipe at equal angles in the radial direction. One end of the spring is connected to the outer wall of the corrugated pipe, and the other end is connected to the inner wall of the sleeve; the vibration end of the vibration motor is connected to the outer wall of the sleeve.

[0006] The preferred technical solution is: the vibration end of the vibration motor is arranged along the radial direction of the corrugated pipe; the vibration end of the vibration motor is arranged on the upper side or the lower side of the corrugated pipe.

[0007] The preferred technical solution is as follows: It further includes a noise reduction sleeve, which is configured into a profiling structure corresponding to the vibration motor and the sleeve in the installed state. The noise reduction sleeve is sleeved on the outside of the vibration motor and the sleeve, and a noise reduction material is filled in the interlayer between the noise reduction sleeve and the vibration motor and the sleeve; the noise reduction material adopts a honeycomb noise reduction board and a sound insulation pad. The honeycomb noise reduction board is arranged to cover the vibration motor and the sleeve, and the sound insulation pad is arranged to wrap the honeycomb noise reduction board.

[0008] The preferred technical solution is as follows: The roller brush system is composed of a roller brush and a roller brush driving mechanism. The roller brush is detachably installed on the bottom side of the machine shell, and the roller brush driving mechanism is arranged in the machine shell and used to drive the roller brush to rotate.

[0009] The preferred technical solution is as follows: The roller brush driving mechanism is composed of a roller brush driving motor and a gearbox. The roller brush driving motor and the gearbox are both fixedly arranged in the machine shell. The output end of the roller brush driving motor is in transmission connection with the input end of the gearbox, and the output end of the gearbox is in transmission connection with the roller brush.

[0010] The preferred technical solution is as follows: The water spraying system is composed of a water distributor, a connecting pipe, a clean water tank and a water pump. The water distributor is arranged in the machine shell and the water outlet end faces the roller brush. The clean water tank is arranged in the machine shell, the water pump is arranged in the clean water tank, and the water outlet end of the water pump is connected with the water inlet end of the water distributor through the connecting pipe.

[0011] The preferred technical solution is as follows: The power supply system includes a battery, which is detachably installed in the handle of the machine shell. The battery is used to supply power to the roller brush system, the water spraying system and the sewage suction system at the same time.

[0012] The preferred technical solution is as follows: It further includes a main control board and a dirt sensor. The main control board is connected to the roller brush system, the water spraying system, the sewage suction system, the power supply system and the dirt sensor at the same time. The dirt sensor is used to detect the cleanliness of the roller brush.

[0013] A sewage cleaning method for the sewage suction system of the floor washer based on the above, the sewage suction system includes two sewage cleaning modes: The sewage cleaning method of the sewage suction system in the working mode of the floor washer is as follows: The main control board real-time detects the rotation speed of the vacuum motor in the sewage suction system. When the rotation speed of the vacuum motor is higher than the threshold value, the vibration motor is started and the corrugated pipe is driven to vibrate through the elastic vibration transmission mechanism, and the dirt blocked on the inner wall of the corrugated pipe is shaken off and sucked into the sewage tank by the vacuum motor; when the rotation speed of the vacuum motor resumes or is lower than the threshold value, the operation of the vibration motor is stopped; The sewage cleaning method of the sewage suction system in the self-cleaning mode of the floor washer is as follows: The main control board controls the synchronous operation of the roller brush system, the water spraying system and the sewage suction system. At the same time, it detects the cleanliness of the roller brush in the roller brush system through a dirt sensor. When the cleanliness of the roller brush is restored or lower than the threshold, the vibration motor is turned on and the corrugated pipe is driven to vibrate through an elastic vibration transmission mechanism, shaking off the dirt blocked on the inner wall of the corrugated pipe and sucking it into the sewage tank by the vacuum motor; when the cleanliness of the roller brush is higher than the threshold, the operation of the vibration motor is stopped.

[0014] Due to the application of the above technical solution, the beneficial effects of the present invention are as follows: Efficient sewage cleaning and blockage avoidance: Through the cooperation of the vibration motor and the elastic vibration transmission mechanism, radial vibration is applied to the corrugated pipe, which can effectively remove sundries such as stains and hair attached in the grooves of the pipe wall, solve the blockage problem caused by residual stains in the pipeline of traditional floor washing machines, ensure the long-term stable operation of the sewage suction system, and improve the cleaning efficiency.

[0015] Flexible structure and convenient maintenance: The roller brush adopts a detachable design, which is convenient for users to regularly disassemble, clean or replace, maintain the cleanliness of the roller brush, and ensure the floor cleaning effect; the battery can be detachably installed in the handle, which is convenient for users to charge or replace the spare battery, extend the battery life of the device, and improve the usability.

[0016] Noise reduction design and optimized experience: The multi-layer noise reduction structure combining the noise reduction sleeve, the honeycomb noise reduction board and the sound absorption pad can effectively absorb the noise generated when the vibration motor and the elastic vibration transmission mechanism work, reduce the operating noise of the device, create a quieter cleaning environment, and improve the user experience.

[0017] Integrated power supply, energy saving and environmental protection: The power supply system powers the roller brush system and the sewage suction system through the same battery, simplifies the circuit structure, reduces energy consumption, and realizes energy saving and environmental protection; at the same time, the unified power supply mode is convenient for users to manage the device power and avoid the cumbersome operation brought by the independent power supply of multiple systems.

[0018] Scientific layout, stable and reliable: The vibration end of the vibration motor is arranged radially along the corrugated pipe and is located on the upper side or the lower side, so that the vibration energy is evenly transmitted to the circumferential direction of the corrugated pipe, ensuring the consistency of the sewage cleaning effect; the elastic vibration transmission mechanism provides a buffering effect while transmitting vibration through the cooperation of the spring and the sleeve, reduces mechanical wear, and improves the structural stability and service life of the device. Brief Description of the Drawings

[0019] Figure 1 It is a schematic cross-sectional view of the main body of the floor washing machine involved in the present invention.

[0020] Figure 2 It is a schematic cross-sectional view of the elastic vibration transmission mechanism involved in the present invention in the assembled state. Detailed Description of the Invention

[0021] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in this technology can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0022] Please refer to Figure 1 - Figure 2 . It should be noted that in the description of the present invention, it needs to be explained that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", "hanging" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0023] In the description of the present invention, it also needs to be explained that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0024] Embodiment: As Figures 1 to 2 shown, according to a general technical concept of the present invention, a floor washer is provided, including a machine shell 1. A brush rolling system 2, a water spraying system (not shown), a sewage suction system 3 and a power supply system (not shown) are provided in the machine shell 1. The sewage suction system 3 is composed of a sewage suction port 31, a corrugated pipe 32, a sewage tank (not shown) and a vacuum motor (not shown). The sewage suction port 31 is arranged on the bottom side of the machine shell 1. The corrugated pipe 32, the sewage tank and the vacuum motor are all arranged in the machine shell 1. One end of the corrugated pipe 32 is connected to the sewage suction port 31, and the other end of the corrugated pipe 32 is connected to the sewage inlet of the sewage tank. The negative pressure end of the vacuum motor is connected to the air extraction end of the sewage tank. It further includes an elastic vibration transmission mechanism 4 and a vibration motor 5. The elastic vibration transmission mechanism 4 is arranged on the periphery of the corrugated pipe 32, and the vibration motor 5 is arranged in the machine shell 1. The vibration motor 5 applies radial vibration to the corrugated pipe 32 through the elastic vibration transmission mechanism 4 to achieve the sewage cleaning effect in the pipe wall groove.

[0025] AsFigures 1 to 2 As shown, in an exemplary embodiment of the present invention, the elastic vibration transmission mechanism 4 is composed of a sleeve 41 and multiple groups of springs 42. The sleeve 41 is sleeved on the outer periphery of the bellows 32, and multiple groups of springs 42 are arranged at equal angles in the radial direction on the outer periphery of the bellows 32. One end of the spring 42 is connected to the outer wall of the bellows 32, and the other end is connected to the inner wall of the sleeve 41; the vibrating end of the vibrating motor 5 is connected to the outer wall of the sleeve 41. It should be noted that this structure uses multiple groups of springs 42 to connect the bellows 32 and the sleeve 41, which can evenly apply the force generated by the vibrating motor 5 to the circumferential wall of the bellows 32, avoiding the problem that a single-point force cannot cover the whole of the bellows 32, and thus resulting in dirt dead corners that cannot be cleaned properly.

[0026] As Figures 1 to 2 shown, in an exemplary embodiment of the present invention, the vibrating end of the vibrating motor 5 is arranged along the radial direction of the bellows 32.

[0027] As Figures 1 to 2 shown, in an exemplary embodiment of the present invention, the vibrating end of the vibrating motor 5 is arranged on the upper side or the lower side of the bellows 32. Under the action of gravity, dirt generally "hides" along the extension direction of the bellows 32 on the lower side of the inner wall of the bellows 32. Arranging the vibrating end of the vibrating motor 5 along the radial direction of the bellows 32 and on the upper side or the lower side of the bellows 32 can vibrate out the dirt "hidden" on the lower side of the inner wall of the bellows 32. If the vibrating motor 5 is arranged at other positions of the bellows 32, such as the left side or the right side, the dirt will shake in the groove of the inner wall of the bellows 32, and thus the dirt cleaning effect cannot be achieved.

[0028] As Figures 1 to 2 shown, in an exemplary embodiment of the present invention, it further includes a noise reduction sleeve 6. The noise reduction sleeve 6 is configured as a profiling structure corresponding to the vibrating motor 5 and the sleeve 41 in the installed state. The noise reduction sleeve 6 is sleeved on the outside of the vibrating motor 5 and the sleeve 41, and a noise reduction material is filled in the interlayer between the noise reduction sleeve 6 and the vibrating motor 5 and the sleeve 41. This structure can effectively reduce noise and avoid affecting the user experience.

[0029] As Figures 1 to 2 shown, in an exemplary embodiment of the present invention, the noise reduction material uses a honeycomb noise reduction board 7 and a sound absorption pad 8. The honeycomb noise reduction board 7 is arranged to cover the vibrating motor 5 and the sleeve 41, and the sound absorption pad 8 is arranged to wrap the honeycomb noise reduction board 7.

[0030] As Figures 1 to 2 shown, in an exemplary embodiment of the present invention, the roller brush system 2 is composed of a roller brush 21 and a roller brush driving mechanism (not shown). The roller brush 21 is detachably installed on the bottom side of the machine housing 1, and the roller brush driving mechanism is arranged in the machine housing 1 and used to drive the roller brush 21 to rotate.

[0031] As Figures 1 to 2 shown, in an exemplary embodiment of the present invention, the roller brush driving mechanism is composed of a roller brush driving motor and a gearbox. Both the roller brush driving motor and the gearbox are fixedly arranged in the housing 1. The output end of the roller brush driving motor is drivingly connected to the input end of the gearbox, and the output end of the gearbox is drivingly connected to the roller brush 21.

[0032] As Figures 1 to 2 shown, the water spraying system is composed of a water distributor, a connecting pipe, a clean water tank and a water pump. The water distributor is arranged in the housing 1 and the water outlet end faces the roller brush. The clean water tank is arranged in the housing 1, the water pump is arranged in the clean water tank, and the water outlet end of the water pump is connected to the water inlet end of the water distributor through the connecting pipe.

[0033] As Figures 1 to 2 shown, in an exemplary embodiment of the present invention, the power supply system includes a battery. The battery is detachably installed in the handle of the housing 1, and the battery is used to supply power to the roller brush system 2, the water spraying system and the sewage suction system 3 at the same time.

[0034] As Figures 1 to 2 shown, it further includes a main control board (not shown) and a dirt sensor (not shown). The main control board is connected to the roller brush system, the water spraying system, the sewage suction system, the power supply system and the dirt sensor at the same time. The dirt sensor is used to detect the cleanliness of the roller brush.

[0035] In addition, the present application also relates to a method for cleaning the sewage suction system based on the above floor washer. The sewage suction system includes two cleaning modes: The cleaning method of the sewage suction system in the working mode of the floor washer is as follows: The main control board real-time detects the rotation speed of the vacuum motor in the sewage suction system. When the rotation speed of the vacuum motor is higher than the threshold, the vibration motor is turned on and the corrugated pipe is driven to vibrate through the elastic vibration transmission mechanism, and the dirt blocked on the inner wall of the corrugated pipe is shaken off and sucked into the sewage tank by the vacuum motor; when the rotation speed of the vacuum motor returns to or is lower than the threshold, the operation of the vibration motor is stopped. This method can avoid the ineffective vibration of the vibration motor and achieve the effects of noise reduction and power saving.

[0036] The cleaning method of the sewage suction system in the self-cleaning mode of the floor washer is as follows: The main control board controls the synchronous operation of the roller brush system, the water spraying system, and the sewage suction system. At the same time, it detects the cleanliness of the roller brush in the roller brush system through a dirt sensor. When the cleanliness of the roller brush is restored or lower than the threshold, the vibration motor is turned on and the corrugated pipe is driven to vibrate through an elastic vibration transmission mechanism, shaking off the dirt blocked on the inner wall of the corrugated pipe and being sucked into the sewage tank by the vacuum motor; when the cleanliness of the roller brush is higher than the threshold, the operation of the vibration motor is stopped. The main reason is that: in the initial stage of self-cleaning, the surface of the roller brush is relatively dirty, and the water sprayed by the water spraying system is still sewage after passing through the roller brush, which cannot play a role in cleaning the corrugated pipe. By detecting the dirt degree of the roller brush (or detecting the dirt degree of the water passing through the sewage suction port), when the dirt degree of the roller brush reaches a certain clean degree, the vibration motor is then turned on, which is equivalent to cleaning the corrugated pipe until the self-cleaning ends.

[0037] Therefore, the present invention has the following advantages: Efficient sewage cleaning and blockage avoidance: Through the cooperation of the vibration motor and the elastic vibration transmission mechanism, radial vibration is applied to the corrugated pipe, which can effectively remove sundries such as stains and hairs attached in the grooves of the pipe wall, solve the blockage problem caused by residual stains in the pipeline of traditional floor washers, ensure the long-term stable operation of the sewage suction system, and improve the cleaning efficiency.

[0038] Flexible structure and convenient maintenance: The roller brush adopts a detachable design, which is convenient for users to regularly disassemble, clean or replace, maintain the cleanliness of the roller brush, and ensure the ground cleaning effect; the battery can be detachably installed in the handle, which is convenient for users to charge or replace the spare battery, extend the battery life of the device, and improve the usability.

[0039] Noise reduction design and optimized experience: The noise reduction sleeve combines a multi-layer noise reduction structure of a honeycomb noise reduction board and a sound absorption pad, which can effectively absorb the noise generated when the vibration motor and the elastic vibration transmission mechanism work, reduce the operating noise of the device, create a quieter cleaning environment, and improve the user experience.

[0040] Integrated power supply, energy saving and environmental protection: The power supply system supplies power to the roller brush system and the sewage suction system through the same battery, simplifies the circuit structure, reduces energy consumption, and realizes energy saving and environmental protection; at the same time, the unified power supply mode is convenient for users to manage the device power and avoids the cumbersome operations brought by independent power supplies for multiple systems.

[0041] Scientific layout, stable and reliable: The vibrating end of the vibration motor is arranged radially along the corrugated pipe and is located on the upper side or the lower side, so that the vibration energy is evenly transmitted to the circumferential direction of the corrugated pipe, ensuring the consistency of the sewage cleaning effect; the elastic vibration transmission mechanism provides a buffering effect while transmitting vibration through the cooperation of a spring and a sleeve, reduces mechanical wear, and improves the structural stability and service life of the device.

[0042] The above embodiments are only illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A floor washer, comprising a housing, wherein a rolling brush system, a water spraying system, a sewage suction system and a power supply system are arranged in the housing. The sewage suction system is composed of a sewage suction port, a corrugated pipe, a sewage tank and a vacuum motor. The sewage suction port is arranged on the bottom side of the housing. The corrugated pipe, the sewage tank and the vacuum motor are all arranged in the housing. One end of the corrugated pipe is connected to the sewage suction port, and the other end of the corrugated pipe is connected to the sewage inlet of the sewage tank. The negative pressure end of the vacuum motor is connected to the air extraction end of the sewage tank, and it is characterized in that: It further includes an elastic vibration transmission mechanism and a vibration motor. The elastic vibration transmission mechanism is arranged on the peripheral side of the corrugated pipe. The vibration motor is arranged in the machine shell. The vibration motor applies radial vibration to the corrugated pipe through the elastic vibration transmission mechanism to achieve the cleaning effect in the pipe wall groove.

2. The floor washer according to claim 1, wherein: The elastic vibration transmission mechanism is composed of a sleeve and multiple groups of springs. The sleeve is sleeved on the outer periphery of the corrugated pipe. Multiple groups of the springs are arranged on the outer periphery of the corrugated pipe at equal angles in the radial direction. One end of the spring is connected to the outer wall of the corrugated pipe, and the other end is connected to the inner wall of the sleeve. The vibrating end of the vibration motor is connected to the outer wall of the sleeve.

3. The floor washer according to claim 1, wherein: The vibrating end of the vibration motor is arranged along the radial direction of the corrugated pipe. The vibrating end of the vibration motor is arranged on the upper side or the lower side of the corrugated pipe.

4. A floor washer according to claim 1, characterized in that: It further includes a noise reduction sleeve. The noise reduction sleeve is configured as a profiling structure corresponding to the vibration motor and the sleeve in the installed state. The noise reduction sleeve is sleeved on the outer sides of the vibration motor and the sleeve. The interlayer between the noise reduction sleeve and the vibration motor and the sleeve is filled with noise reduction materials. The noise reduction materials adopt a honeycomb noise reduction board and a sound absorption pad. The honeycomb noise reduction board is arranged to cover the vibration motor and the sleeve, and the sound absorption pad is arranged to wrap the honeycomb noise reduction board.

5. A floor washer according to claim 1, characterized in that: The roller brush system is composed of a roller brush and a roller brush driving mechanism. The roller brush is detachably installed on the bottom side of the machine shell. The roller brush driving mechanism is arranged in the machine shell and is used to drive the roller brush to rotate.

6. The floor washer according to claim 5, wherein: The roller brush driving mechanism is composed of a roller brush driving motor and a gearbox. The roller brush driving motor and the gearbox are both fixedly arranged in the machine shell. The output end of the roller brush driving motor is in transmission connection with the input end of the gearbox. The output end of the gearbox is in transmission connection with the roller brush.

7. A floor washer according to claim 5, characterized in that: The water spraying system is composed of a water distributor, a connecting pipe, a clean water tank and a water pump. The water distributor is arranged in the machine shell and the water outlet end faces the roller brush. The clean water tank is arranged in the machine shell. The water pump is arranged in the clean water tank. The water outlet end of the water pump is connected to the water inlet end of the water distributor through the connecting pipe.

8. The floor washer according to claim 1, wherein: The power supply system includes a battery. The battery is detachably installed in the handle of the machine shell. The battery is used to supply power to the roller brush system, the water spraying system and the sewage suction system at the same time.

9. The floor washer according to claim 5, characterized in that: It further includes a main control board and a dirt sensor. The main control board is connected to the roller brush system, the water spraying system, the sewage suction system, the power supply system and the dirt sensor at the same time. The dirt sensor is used to detect the cleanliness of the roller brush.

10. A method for cleaning a sewage suction system of a floor washer according to any one of claims 1-9, characterized in that, The sewage suction system includes two cleaning modes: The cleaning method of the sewage suction system in the floor washing machine working mode is as follows: The main control board real-time detects the rotation speed of the vacuum motor in the sewage suction system. When the rotation speed of the vacuum motor is higher than the threshold value, the vibration motor is started and the corrugated pipe is driven to vibrate through the elastic vibration transmission mechanism. The dirt blocked on the inner wall of the corrugated pipe is shaken off and sucked into the sewage tank by the vacuum motor. When the rotation speed of the vacuum motor resumes or is lower than the threshold value, the operation of the vibration motor is stopped. The cleaning method of the sewage suction system in the floor washing machine self-cleaning mode is as follows: The main control board controls the synchronous operation of the roller brush system, the water spraying system and the sewage suction system. At the same time, it detects the cleanliness of the roller brush in the roller brush system through a dirt sensor. When the cleanliness of the roller brush is restored or lower than the threshold value, the vibration motor is turned on and the corrugated pipe is driven to vibrate through an elastic vibration transmission mechanism, so that the dirt blocked on the inner wall of the corrugated pipe is shaken off and sucked into the sewage tank by the vacuum motor; when the cleanliness of the roller brush is higher than the threshold value, the operation of the vibration motor is stopped.

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