Vacuumizing device for double-cone vacuum dryer

The utility model discloses a vacuumizing device for a double-cone vacuum dryer. The vacuumizing device comprises a shell, a buffer vacuumizing part and a controller, an access hole for entering the shell is formed in the right end of the shell, a sealing part is arranged at the position, close to the access hole, of the shell, and a main vacuumizing part is arranged in the shell; the buffer vacuum pumping part is located on the outer side of the shell, the buffer vacuum pumping part comprises an auxiliary connecting pipe, and one end of the auxiliary connecting pipe is communicated with an air inlet of the auxiliary vacuum pump, and has the advantages that the buffer vacuum pumping part and the shell are arranged, the vacuum pump can be closed, and the vacuum pumping operation on the environment where the vacuum pump is located can be achieved; buffering of the environment where the vacuum pump is located and the pressure intensity difference in the double-cone vacuum dryer is achieved, the vacuumizing capac