DRAINAGE DEVICE OF SINK CABINET

PURPOSE:To keep the beauty of the inside of a sink by preventing drop of small flatwares. CONSTITUTION:A cover 10 installed on the top surface opening portion 13 of a drainage device 8 installed in a drain hole 7 of the bottom portion of a sink 6 comprises a doughnut-type support cover 15 and a disc-like rotary plate 16 provided in the inner hole of the support cover 15. An integrally formed pivotal support shaft 18 symmetrically on the peripheral edge of the rotary plate 16 is rotatably installed on the side surfaces of the inner hole of the support cover 15, and the rotary plate 16 is formed in such a manner as to turn on the pivoting support shaft 18. Accordingly, at the time of washing flatwares, the cover 10 is put in the locking state so that small flatwares can be prevented from dropping in a garbage basket. At the time of letting cooking garbages flow in the garbage basket in the drainage device, the cover is released from the locking state to be freely reversed, so that the cover 10 is rotated by the weight of cooking garbage to let the cooking garbage naturally drop in the garbage.