Vacuum dust collection device

The invention relates to a vacuum dust collection device, which belongs to the field of the corrugated paper box printing machine, and consists of a wind pipe, a valve, a dust collection wind chamber, a brush roll and a paper delivery wheel, wherein the paper delivery wheel is connected with a main machine, the brush roll is connected with a motor, the wind pipe is connected with the valve, the valve is connected with the dust collection wind chamber, the brush roll is installed inside the dust collection wind chamber, the paper delivery wheel is installed inside a vacuum adsorption wind chamber, the vacuum adsorption wind chamber is connected with a fan, the dust collection wind chamber is arranged on the upper part of the vacuum adsorption wind chamber, a plastic brush which is planted on the surface of the brush roll can sweep the dust or other chips on the surface of the paperboard, and the swept dust can be collected by the wind pipe and can be pumped by the fan to a dust collection bag to be collected, so the printing surface of the paperboard can be cleaned, and the printing quality can be improved. The vacuum dust collection device has simple structure, low cost and good dust removal effect.