Negative pressure dust collection device in dust collection pulverizer

The utility model discloses a negative pressure dust suction device in a dust suction crusher, which comprises a shell cylinder, a partition plate for dividing the shell cylinder into a negative pressure chamber and a dust suction chamber is arranged in the shell cylinder, a plurality of filter pipes are inserted and fixed on the partition plate, one section of each filter pipe positioned in the dust suction chamber is an elastic corrugated pipe, a connecting piece is respectively arranged in each filter pipe, and the connecting pieces are connected with the negative pressure chamber and the dust suction chamber. And a linear driving mechanism is installed at the top of the shell barrel, and the linear driving mechanism is fixedly connected with the part, located in the negative pressure chamber, of each connecting piece. The dust collector can continuously work when dust on the surface of the filter pipe falls off, and has good dust collection capacity. 本实用新型公开了一种吸尘粉碎机中的负压吸尘装置，包括壳筒，壳筒内部设有将壳筒隔分为负压室、吸尘室的隔板，隔板插