Automatically cleaning disk seat

The utility model relates to an automatically cleaning disk seat, including the disk seat, the disk seat setting forms sealed face the ball core outside and with the ball core, and the sealed face both sides of disk seat knead dough two for face no. 1, and the first exterior angle of constitutions is kneaded dough for the obtuse angle to the tangent plane of ball core and face contact department, and the second exterior angle that two constitutions were kneaded dough to the tangent plane of a ball core and two contact department also is the obtuse angle, first exterior angle and second exterior angle are all designed to the obtuse angle, sealed the contained angle rather than the side on the disk seat then is the acute angle, the disk seat is sharper with the contacting area of ball core, can get rid of the stereoplasm solid dust of bonding on the ball core, prevent to pull ball core and disk seat, the sealed face of stereoplasm solid dust entering that prevents to bond on the ball core makes sealed face have