Screening treatment device for tunnel kiln engineering heavy metal contaminated soil

The utility model discloses a screening treatment device for tunnel kiln project heavy metal contaminated soil, which comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with a fixed frame, the upper surface of the fixed frame is movably connected with a sliding rod, one end of the sliding rod penetrates through the fixed frame and is fixedly connected with a rubber plate, and the other end of the sliding rod is fixedly connected with the rubber plate. A first spring is movably connected to the circumferential outer wall of the sliding rod, the two ends of the first spring are fixed to the rubber plate and the fixing frame correspondingly, a connecting plate is fixedly connected to the top end of the sliding rod, a second rack is fixedly connected to the bottom of the connecting plate, and a supporting plate is fixedly connected to the upper surface of the bottom plate. According to the device, heavy metal substances can be screened out from soil through matched use of the fir