Automatic Cleaning Device for a Liquid Container

摘要

An automatic cleaning device includes a cleaning tube having a longitudinal hole extending along a longitudinal axis. A connecting tube extends from a bottom of an intermediate section of the cleaning tube and is rotatably received in a draining tube in a bottom of a liquid container. Left and right guiding openings are defined in bottoms of left and right sections of the cleaning tube and extend slantingly from an outer periphery through an inner periphery of the cleaning tube. Each guiding opening includes a central axis spaced from the longitudinal axis. The left and right guiding openings have opposite extending directions. Siphon effect is created when a liquid in the liquid container is being drained via the draining tube. The liquid imparts force to inner peripheral walls of the guiding openings, causing the cleaning tube and the connecting tube to rotate about a central axis of the connecting tube.