When the drum washing machine is washing, the water inlet solenoid valve is turned on, tap water and detergent rush into the drum through the detergent box, and the inner drum is driven by the motor to rotate forward periodically at low speed, so that clothes roll and rub in the drum. On the one hand, the clothes rub against the ribs on the inner barrel wall and the barrel wall in the detergent, and the parts close to the ribs rub against the relatively moving parts, resulting in a friction effect.
On the other hand, the lifting ribs on the drum drive the clothes to rotate together, lifting the clothes out of the liquid level and sending them to a certain height. Because of gravity, they fall into the laundry detergent again and collide with it, resulting in similar impact and falling effects. In this way, the inner cylinder keeps rotating back and forth, the clothes keep rising and falling, and the washing liquid moves gently, all of which cause friction, torsion and collision between clothes, clothes and laundry detergent, and clothes and the inner cylinder. These effects are similar to manual washing such as hand rubbing, board rubbing, brushing, and throwing hands, so as to achieve the purpose of washing clothes, eventually cleaning clothes and minimizing the wear and tear on clothes.