Dust collector

A dust collector, comprising a base, wherein a filtering barrel is installed on the upper part of the base, one side of the filtering barrel is provided with a main fan, the main fan is provided with a main fan air inlet and a main fan air outlet, the main fan air inlet extends to the inside of the filtering barrel through the outer wall of the filtering barrel, the upper section of the filtering barrel is provided with a partition plate capable of dividing the inner space of the filtering barrel, the inner space of the filtering barrel above the divided partition plate is an upper cavity of the filtering barrel, the inner space of the filtering barrel below the divided partition plate is the lower cavity of the filtering barrel, the partition plate is provided with a plurality of through holes, the main fan air inlet is communicated with one of the through holes hermetically, filtering bags are installed in other through holes hermetically, a straight pipe which extends to the outside of the filtering barrel is installed on the upper part of the partition plate, the surface of the straight pipe is provided with a plurality of first blowback pipes communicated with the straight pipe, each of the first blowback pipes faces a filtering bag, a bent pipe extending to the outside of the filtering barrel is provided above or below the straight pipe, the surface of the bent pipe is provided with a plurality of second blowback pipes communicated with the bent pipe, the second blowback pipes extend to the lower part of the partition plate through the partition plate, the upper part of the partition plate is hermetically isolated from the outside by a sealing plate, the bent pipe is communicated with an air storage tank through a first valve, the straight pipe is communicated with the air storage tank through a second valve, one side of the filtering barrel is provided with an air suction port leading to the lower cavity of the filtering barrel, the end of the air suction port is provided with a third valve, the lower cavity of the filtering barrel is hermetically isolated from the outside through a fourth valve provided at the bottom of the filtering barrel, the air suction port is communicated with an auxiliary air suction pipe, a fifth valve is installed in the auxiliary air suction pipe, the fifth valve is communicated with the inside of an auxiliary filtering barrel, the auxiliary filtering barrel is communicated with an auxiliary air outlet pipe outside the auxiliary filtering barrel through a filtering bag inside the auxiliary filtering barrel, the auxiliary air outlet pipe is communicated with an auxiliary fan, and the bottom of the auxiliary filtering barrel is provided with a sixth valve.