Floor cleaning device

Abstract

A floor cleaning device includes a horizontal portion and a vertical portion. The horizontal portion is capable of moving on a floor to be cleaned. The vertical portion is rotatably disposed on the horizontal portion. The horizontal portion includes a washing unit. The washing unit includes a rolling brush, a detergent liquid outlet, a detergent liquid tank and a pump. The rolling brush is capable of washing the floor to be cleaned. The detergent liquid tank communicates with the detergent liquid outlet. The pump conveys the detergent liquid from the detergent liquid tank to the detergent liquid outlet and finally to the floor to be cleaned. The detergent liquid may serve as an interface active agent of the floor to be cleaned. The detergent liquid cooperates with the rolling brush to scrub the floor to be cleaned.

What is claimed is: 
     
         1 . A floor cleaning device comprising:
 a horizontal portion; and   a vertical portion;   wherein the horizontal portion is capable of moving on a floor to be cleaned, the vertical portion is rotatably disposed on the horizontal portion, and the horizontal portion comprises a washing unit, the washing unit comprises a rolling brush capable of washing the floor to be cleaned; a detergent liquid outlet; a detergent liquid tank for storing detergent liquid, communicating with the detergent liquid outlet; and a pump arranged to convey the detergent liquid from the detergent liquid tank to the detergent liquid outlet.   
     
     
         2 . The floor cleaning device of  claim 1 , wherein the horizontal portion further comprises a filtering unit, the washing unit further comprises a suction channel communicating with the dirty liquid tank, the detergent liquid and dirt are mixed to form dirty liquid, the dirty liquid containing air can enter the dirty liquid tank through the suction channel. 
     
     
         3 . The floor cleaning device of  claim 2 , wherein the horizontal portion further comprises a power unit, the power unit comprises a suction motor disposed to suck dirty liquid with air to the suction channel and emit the air out of the horizontal portion. 
     
     
         4 . The floor cleaning device of  claim 3 , wherein the filtering unit further comprises a vent for emitting air. 
     
     
         5 . The floor cleaning device of  claim 4 , wherein the filtering unit further comprises an airflow channel, the air can enter the airflow channel through an inlet of the airflow channel, an outlet of the airflow channel communicates with the inlet of the suction motor, and the outlet of the suction motor communicates with the vent. 
     
     
         6 . The floor cleaning device of  claim 5 , wherein the filtering unit further comprises a water resistance assembly, the water resistance assembly comprises a float and a blocking plate connected to the float, the float floats in the dirty liquid tank, and the blocking plate can cloak the inlet of the airflow channel. 
     
     
         7 . The floor cleaning device of  claim 2 , wherein the washing unit further comprises a baffle which is rotatably disposed at an outlet of the suction channel, air is separated from the dirty liquid containing air by making the dirty liquid collide with the baffle. 
     
     
         8 . The floor cleaning device of  claim 1 , wherein the washing unit comprises a wiper for contacting with the floor to be cleaned. 
     
     
         9 . The floor cleaning device of  claim 1 , wherein the vertical portion comprises an operating lever which is rotatably disposed on the vertical portion. 
     
     
         10 . The floor cleaning device of  claim 9 , wherein the vertical portion further comprises a handle portion connected to the operating lever.