Double-negative-pressure dust removal device for lithium battery feeding

The utility model discloses a double-negative-pressure dust removal device for lithium battery feeding, which comprises a frame body. A first storage tank body used for storing main materials, a ton bag used for feeding materials into the first storage tank body, a first negative pressure mechanism used for carrying out negative pressure setting on the first storage tank body and a second negative pressure mechanism used for carrying out negative pressure setting on a discharging opening of the ton bag are arranged on the frame body, and the output end of the ton bag communicates with the input end of the first storage tank body; the first storage tank body is communicated with the first negative pressure mechanism, and the ton bag is communicated with the second negative pressure mechanism; according to the double-negative-pressure dust removal device, dust is prevented from overflowing outwards from the source, waste of raw materials is reduced, and meanwhile the feeding speed is increased. 本实用新型公开了一种用于锂电池投