Floor Cleaning Device

Abstract

A floor cleaning device includes a brush assembly, a frame, a clean tank, a dirty tank, a suction assembly, a battery assembly and a control system. The frame is connected with the brush assembly. The clean tank is arranged on the frame and in a fluid communication with the brush assembly. The dirty tank is arranged on the frame and connected with the brush assembly. The suction assembly is arranged on the frame and connected with the dirty tank to form a negative pressure in the dirty tank and recover sewage after cleaning to the dirty tank. The battery assembly is arranged on the frame. The battery assembly at least includes a first/second battery pack. The control system controls the clean tank to supply water to the brush assembly and controls the suction assembly to recycle the sewage to the dirty tank.

What is claimed is: 
     
         1 . A floor cleaning device, comprising:
 a brush assembly;   a frame, connected with the brush assembly;   a clean tank, arranged on the frame and being in fluid communication with the brush assembly;   a dirty tank, arranged on the frame and being in fluid communication with the brush assembly;   a suction assembly, arranged on the frame and connected with the dirty tank;   a battery assembly, arranged on the frame, and at least comprising a first battery pack and a second battery pack; and   a control system, configured to control the clean tank to supply water to the brush assembly and control the suction assembly to recycle sewage cleaned by the floor brush assembly to the dirty tank.   
     
     
         2 . The floor cleaning device according to  claim 1 , wherein, at least one of the first battery pack and the second battery pack is chargeable independently of the floor cleaning device, the first battery pack is charged independently of the floor cleaning device, the second battery pack is charged through an adapter of the floor cleaning device, the control system controls the first battery pack to be discharged prior to the second battery pack, and at least one of the first battery pack and the second battery pack is detachably mounted on the frame. 
     
     
         3 . The floor cleaning device according to  claim 2 , wherein, the first battery pack and the second battery pack are arranged on a same side of the frame, the first battery pack is arranged above the second battery pack, the first battery pack is assembled or disassembled along a longitudinal axis direction of the floor cleaning device, the second battery pack is assembled or disassembled along a direction transverse to the longitudinal axis direction of the floor cleaning device, one side of the frame is provided with a first battery accommodating cavity and a second battery accommodating cavity, a bottom of the first battery accommodating cavity is provided with a first connecting terminal matched with the first battery pack, the second battery accommodating cavity is provided with a second connecting terminal matched with the second battery pack, and the first connecting terminal and the second connecting terminal are electrically connected with the control system respectively. 
     
     
         4 . The floor cleaning device according to  claim 3 , wherein, a bottom of the first battery accommodating cavity is provided with a pin and a latch, the first battery pack is inserted and mounted in the first accommodating cavity and is locked through the latch, an outside of the second battery pack is provided with a battery pack inner bracket and a battery pack outer bracket, the battery pack outer bracket wraps on an outside of the battery pack inner bracket, a top end of the battery pack outer bracket is provided with a pressing device, and the second battery pack is clamped in the second battery accommodating cavity through the pressing device. 
     
     
         5 . The floor cleaning device according to  claim 2 , wherein, the clean tank, the dirty tank and the suction assembly are arranged on one side of the frame opposite to the battery assembly, at least one of the first battery pack and the second battery pack is configured to supply power to a second device, and at least one of the first battery pack and the second battery pack is provided with a USB port and/or a TYPE-C port. 
     
     
         6 . The floor cleaning device according to  claim 2 , wherein, a top of the dirty tank is provided with an air suction port, the dirty tank is communicated with the suction assembly through the air suction port, and an inside of the dirty tank is provided with an air passage communicated with the brush assembly. 
     
     
         7 . The floor cleaning device according to  claim 1 , wherein, the clean tank comprises:
 a fluid tank, provided with an outlet; and   a valve assembly, mounted on the outlet, and comprising:
 a control structure, arranged in the outlet, and 
 a leak-proof structure, connected with the control structure, and provided with an opening-closing unit; 
   wherein, the clean tank is convertible between a first state and a second state,   in the first state, the clean tank is mounted on the frame, the opening-closing unit and the control structure are opened by the frame, and the fluid tank provides fluid to the brush assembly,   in the second state, the clean tank is separated from the frame, the control structure is reset, the opening-closing unit is automatically closed, and the fluid tank stops providing fluid to the brush assembly.   
     
     
         8 . The floor cleaning device according to  claim 7 , wherein, the leak-proof structure is provided with a cavity space communicated with the outlet, the control structure comprises a valve pushing rod, a spring, a sealing sleeve and a pushing rod cap, the pushing rod cap is connected with the leak-proof structure, the valve pushing rod is moveable between the pushing rod cap and the cavity space, the spring is mounted on an end of the valve pushing rod towards the pushing rod cap, the sealing sleeve is mounted at one end of the valve pushing rod towards the cavity space, the frame is provided with a push rod, and a size of the opening-closing unit matches a size of the push rod. 
     
     
         9 . The floor cleaning device according to  claim 8 , wherein, the valve pushing rod is provided with a protruding flange extending outward along a radial direction, the protruding flange is arranged between the spring and the sealing sleeve, the cavity space comprises a first cavity space to accommodate the valve pushing rod and a second cavity space to contain leakage, and a supporting structure of the valve pushing rod is arranged between the first cavity space and the second cavity space. 
     
     
         10 . The floor cleaning device according to  claim 9 , wherein, the supporting structure is provided with a supporting inclined plane, the supporting inclined plane and the sealing sleeve are in an interference fit under an effect of the spring to form a sealing structure, the opening-closing unit is arranged at one end of the second cavity space away from the first cavity space, a returning distance of the valve pushing rod in the first cavity space is less than a distance from the supporting structure to the opening-closing unit, and a central axis of the valve pushing rod is on a same straight line with a center line of the cavity space. 
     
     
         11 . The floor cleaning device according to  claim 1 , wherein, the clean tank comprises:
 a fluid tank, provided with an outlet; and   a valve assembly, mounted on the outlet, and comprising:
 a control structure, arranged in the outlet, and 
 a leak-proof structure, connected with the control structure, and comprising:
 a bracket, provided with a first cavity space to accommodate the control structure therein, 
 an elastic protective cover, connected with the bracket, at least partially located below the bracket, and a second cavity space to store leakage being arranged inside a part of the elastic protective cover that is located below the bracket, and 
 an opening-closing unit, arranged at one end of the second cavity space away from the bracket, and comprising a cutting slit or a plurality of cross cutting slits arranged on the elastic protective cover. 
 
   
     
     
         12 . The floor cleaning device according to  claim 11 , wherein, the cutting slit is in a cross-type structure, one end of the elastic protective cover away from the bracket is provided with a concavity concaving to an inside of the cavity space, the cutting slit is arranged on the concavity, a spacing is arranged between an end part of the cutting slit and an edge of the elastic protective cover, the valve assembly further comprises a valve cover, and the control structure and the leak-proof structure are fixed on the outlet of the fluid tank through the valve cover. 
     
     
         13 . The floor cleaning device according to  claim 1 , further comprising:
 a sewage recovery passage, located in the dirty tank; and   a handle assembly, mounted on the frame;   wherein, the brush assembly is arranged at a bottom of the frame and comprises a housing, a rolling brush assembly and a driving device, the rolling brush assembly is mounted in the housing and is driven by the driving device, the housing comprises a rear housing, an upper cover and a front cover, the upper cover and the rear housing are mutually assembled and enclosed to be a first housing cavity, the driving device is housed in the first housing cavity, an accommodating cavity is arranged at a position of the rear housing corresponding to the front cover position, the rolling brush assembly is housed in the accommodating cavity and is covered by the front cover, the rear housing comprises a separating wall separating the first housing cavity from the accommodating cavity, a first through hole and a second through hole are arranged on the separating wall, the first through hole is configured to communicate the first housing cavity with the accommodating cavity, and the second through hole is configured to communicate the accommodating cavity with the sewage recovery passage.   
     
     
         14 . The floor cleaning device according to  claim 13 , wherein, the first housing cavity is enclosed by four housing walls arranged in the rear housing, the housing wall arranged close to the separating wall is defined as a first housing wall, an opening is arranged on the first housing wall, the opening is communicated with the first through hole, and the opening is concave downward from a top of the first housing wall. 
     
     
         15 . The floor cleaning device according to  claim 14 , wherein, the rear housing further comprises a connecting wall connecting the separating wall with the first housing wall, there are two connecting walls, an airflow passage is formed between the opening and the first through hole, the two connecting walls are arranged on two sides of the first through hole, and in a vertical direction, the opening is located at a top of the airflow passage, and the first through hole is located at a bottom of the airflow passage. 
     
     
         16 . The floor cleaning device according to  claim 13 , wherein, the second through hole is arranged in a middle position of the separating wall, the first through hole is located at a side of the second through hole, a suction hood is further arranged in the rear housing, a first end of the suction hood is communicated with the second through hole, a second end of the suction hood is communicated with the sewage recovery passage, and the second through hole is configured to enable sewage and sewage gas in the accommodating cavity to enter the suction hood, and enter the dirty tank through the sewage recovery passage. 
     
     
         17 . The floor cleaning device according to  claim 16 , wherein, the suction assembly is arranged above the dirty tank and configured to form a negative pressure inside the dirty tank, the sewage and sewage gas in the accommodating cavity enter the suction hood through the second through hole and enter the dirty tank through the sewage recovery passage, a top of the dirty tank is provided with a gas filter, the gas filter is configured to filter the sewage gas, and the gas filter is HEPA filter. 
     
     
         18 . The floor cleaning device according to  claim 1 , further comprising:
 a handle assembly, mounted on the frame;   wherein, the brush assembly is arranged at a bottom of the frame, the dirty tank comprises a box, a cover body arranged and covering at a top of the box and a filter frame housed in the box, the filter frame comprises a connecting frame, a float slidably connected with the connecting frame and a filter plate assembled and fixed on the connecting frame, a protruding first mounting block is arranged at a first side of the connecting frame, a protruding second mounting block is arranged at a second side of the connecting frame arranged oppositely, the filter plate is correspondingly provided with a first matching block and a second matching block, after the first mounting block is clamped and matched with the first matching block, the filter plate is rotated, so that the second matching block is buckled to the second mounting block, the filter plate is rotated until a top of the first mounting block abuts against the first matching block and a bottom of the second matching block abuts against the second mounting block.   
     
     
         19 . The floor cleaning device according to  claim 18 , wherein, the first mounting block is strip-shaped, the first matching block is provided with a first matching groove therein, and the first mounting block is housed in the first matching groove and abuts against a top inner side wall of the first matching groove, the second mounting block is step-shaped and comprises a first mounting part protruding outwards from the connecting frame and a second mounting part protruding outwards from the first mounting part, an upper surface of the second mounting part is lower than an upper surface of the first mounting part, a second matching groove is arranged in the second matching block, the first mounting part is housed in the second matching groove, and a lower surface of the second matching block abuts against the upper surface of the second mounting part. 
     
     
         20 . The floor cleaning device according to  claim 19 , wherein, the upper surface of the first mounting part is lower than an upper surface of the first mounting block, an inclined first guiding surface is arranged at a top outer side of the first mounting block to guide the first mounting block to be inserted into the first matching groove, an inclined second guiding surface is arranged at a top outer side of the first mounting part to guide the first mounting part to be inserted the second matching groove, and the upper surface of the second mounting part is a flat plane.