TQSF series specific gravity classified stoner of has been improved on the basis of the former gravitational force classified stoner.It is the latest generation classified stoner.It has features such as stable technological performance,ralable running,firm structure ,cleanable screen face,low maintenance etc.It esp.adopts NO.″8928366″ patent technique.It ensures that when the feeding interrupts during stop type operation,the feed won′ trun away at the stone outlet. It is windely applicable for the stoning of the stuffs such as wheat,paddy,soybean,maize.sesame,malt,etc.