This utility model relates to the technical field of
raw material screening equipment, and particularly to screening equipment for concrete construction raw materials. It includes a screening bin, a protective shell, a vibrating motor, a feeding port, a
discharge port, a screening plate, a
fixed frame, connecting springs, fixed rods, cleaning rods, a
drive motor, a screening
auger, a fixed cylinder, a feed inlet, a
discharge rack, a drive
assembly, a mixing
assembly, a connecting
assembly, and a cleaning assembly. A
drive motor is installed above the screening bin, and a screening
auger is installed at the output end of the
drive motor. The screening
auger is located inside the fixed cylinder, with a feed inlet on the bottom inner wall of the fixed cylinder and a
discharge rack on the side wall of the fixed cylinder. During use, multiple sets of cleaning rods are inserted into the screening holes of the screening plate to effectively prevent sand and gravel from clogging the screening plate. After screening, the sand and gravel roll into the fixed cylinder due to the tilt of the screening plate. Then, the drive motor is started to rotate the screening auger, transporting the sand and gravel to the discharge rack for discharge, thus achieving efficient and continuous screening operations.