The utility model relates to an anti-electrostatic shielding contrast analyzer in the technical field of contrast analyzers, a cleaning device comprises a screw rod II which is inserted on the inner wall of a box cavity of an
aggregate analysis box and is used for rotating, and a
bevel gear IV which is used for being meshed and connected with a connecting
assembly is arranged on a rod body of the screw rod II; a sweeping
brush used for discharging the scraped
powder coating out of the
aggregate analysis box is connected to a rod body of the fourth
bevel gear in a threaded mode, and a round rod used for guiding the sweeping
brush is arranged on the right side of the second screw rod. When a first screw rod is driven to rotate through a hand wheel, a movable plate can drive a scraping plate to move front and back at the bottom end of a smearing groove,
powder coating in the smearing groove can be scraped, meanwhile, a second screw rod synchronously rotates along with the first screw rod, and a sweeping
brush can be driven to sweep the
powder coating falling from the bottom end of an
aggregate analysis box to a
slag discharging opening. And then the
powder coating is collected into the collecting
pipe through the
slag discharging opening, so that the problem that the scraped
powder coating is accumulated in the aggregate analysis box can be solved.