Intermediate powder bin quick-opening device and using method

The invention discloses a middle powder bin quick-opening device and a using method.The middle powder bin quick-opening device comprises a cover plate, a quick-opening fastener and a limiting piece, the cover plate abuts against a middle powder bin to seal a hand hole in the middle powder bin, the first end of the quick-opening fastener is connected with the middle powder bin in a pivoted mode, and the second end of the quick-opening fastener is connected with the limiting piece in a pivoted mode; the quick-opening fastener is slidably connected with the middle powder bin so that the second end of the quick-opening fastener can be connected with the middle powder bin in a clamped mode, and the limiting piece is connected with the quick-opening fastener so that the cover plate can be pressed towards the hand hole. The intermediate powder bin quick-opening device has the advantages of being convenient to open, easy and convenient to operate and good in sealing effect. 本发明公开一种中间粉仓快开装置及使用方法，中间粉仓快开装置包括盖板、快开扣件和限位件，