Calcium carbonate powder screening device

The utility model provides a calcium carbonate powder screening device which comprises a box body, a feeding port is formed in the top end of the box body, fixing plates are arranged on the opposite side walls in the box body, a screen fixing frame is arranged at the upper ends of the fixing plates, and vibration motors are further arranged on the opposite outer side walls of the screen fixing frame. Comprising a screening assembly, the screening assembly comprises a first screen and a second screen, the first screen is arranged in the middle of the interior of a screen fixing frame, the second screen is arranged at the bottom of the screen fixing frame, a cavity above the first screen is a pretreatment area, and the pretreatment area comprises a drying lamp. According to the utility model, the pretreatment area plays a role in performing primary treatment on calcium carbonate powder, and particularly for some wet powder, the powder is firstly dried by using a drying lamp and then is sieved, so that the sievi