Multi-layer heavy linear sieve convenient for adjusting excitation position

The utility model relates to a multi-layer heavy linear screen convenient for adjusting excitation positions, which comprises four supporting seats, a screen frame is arranged among the four supporting seats, the screen frame is provided with at least two layers of mounting frames, each layer of mounting frame is provided with a detachable screen plate or screen mesh, one end of the mounting frame positioned at the top layer is provided with a feed chute, and the other end of the mounting frame positioned at the top layer is provided with a material outlet. A material outlet is formed in the same end of each layer of mounting frame below and the top layer, a plurality of vibration exciter mounting holes are formed in the upper end of the mounting frame on the top layer along the full length, and vibration exciters are mounted in the vibration exciter mounting holes; the position of the vibration exciter can be adjusted, so that the amplitude angle of the whole equipment can be adjusted, and a better screening