Clean drinking cup

The utility model provides a clean drinking cup, including cup, top cap, bottom and filter screen, still include: baffle, baffle set up in the cup and separate the cup become cavity and lower cavity,and the middle part of baffle is upwards protruding, spring, spring set up in the epicoele indoorly, and the middle part fixed connection of the top of spring and filter screen, the middle part fixedconnection of bottom and baffle, and the length of spring under natural state is greater than the height of cup, drive arrangement, drive arrangement set up in the outside of cup and can drive baffledirection of height rebound along the cup in the cup, welt, welt set up indoor and be close to the bottom of cup in the cavity of resorption, and it can open downwards to be equipped with the gas pocket and the welt that are used for the circulation of air on the welt, the beneficial effects of the utility model are that the compression of passing through gases and expansion make residue in the cup from the bottom discharge