Dust removal device

The utility model discloses a dust removal device which comprises a shell, a positive pressure cavity and a negative pressure cavity are formed in the shell, and the shell is provided with a positive pressure air blowing opening communicated with the positive pressure cavity and a negative pressure air suction opening communicated with the negative pressure cavity. According to the dust removal device, the positive pressure cavity provides positive pressure for the positive pressure air blowing opening, so that an air layer on the surface to be subjected to dust removal is damaged through the positive pressure air blowing opening, and foreign matters such as non-viscous particles are blown from the surface to be subjected to dust removal, separated and suspended in the air; the negative pressure cavity provides negative pressure for the negative pressure air suction port, then foreign matter such as particles suspended in the air is sucked through the negative pressure air suction port, air blowing and air su