Pearl screening machine with screens convenient to replace

The invention discloses a pearl screening machine with screens convenient to replace. The pearl screening machine comprises a box, and the left side of the bottom of an inner cavity of the box is fixedly connected with a motor. A rotary shaft of the motor is fixedly connected with a first gear, and the inner walls of the two sides of the box are fixedly connected with bearings. Inner cavities of the bearings are movably connected with a transmission rod, and the surface of the transmission rod is sleeved with a second gear. The first gear is engaged with the second gear, and the top of the left side of the transmission rod is fixedly connected with a U-shaped rod. The top of the U-shaped rod is fixedly connected with a supporting rod. According to the pearl screening machine, by means of cooperative use of a screening bin, a first screen, a second screen, a third screen, a groove, through holes, clamping blocks, clamping grooves, third gears, support rods and a hand wheel, the screensin the screening bin can