Screening equipment for calcium carbonate processing

The screening equipment comprises a box body, the top of the box body is communicated with a feeding port, a plurality of opening and closing doors are arranged at the front end of the box body, and a coarse filter screen, a fine filter screen, a collecting box, a replacing unit and an anti-blocking unit are arranged in the box body. The motor rotates the driving gear to enable the driven gear to drive the rotating rod to rotate, so that the striking plate strikes the coarse filter screen and the fine filter screen and moves upwards, and meanwhile, the coarse filter screen and the fine filter screen are reset by virtue of resilience force of the spring, so that the coarse filter screen and the fine filter screen shake, and the filtering effect is improved. The situation that calcium carbonate with the too large diameter blocks the coarse filter screen and the fine filter screen is avoided, when the coarse filter screen and the fine filter screen need to be replaced, the output end can be recycled through the