Volume-variable rice storage tank

The invention discloses a volume-variable rice storage tank. The tank comprises a folding plastic shell, a telescopic plastic inner bag and a telescopic unit, and the appearance of the folding plasticshell is cylindrical. The folding plastic shell is formed by pressing a folded hard material; the folding plastic shell is arranged on the inner side of the folding plastic shell; an upper connectingplate is fixedly connected to the upper ends of the folding plastic shell and the telescopic plastic inner bag; the telescopic unit comprises first fixing blocks, second fixing blocks, a connecting rod, a connecting column, a first positioning pin and a second positioning pin. The first fixing blocks are fixedly connected to the outer surface of the telescopic plastic inner bag in an array mode.The second fixing blocks are fixedly connected to the inner surface of the position, corresponding to the first fixing blocks, of the folding plastic shell in an array mode. The volume-variable rice storage tank has the advanta