Anti-blocking device for rock salt tunnel

A rock salt tunnel anti-blocking device comprises a box body, a crystallization box, crystallization bars, handles, a hoop I, a hoop II and a filter screen, a water inlet is formed in the top of the box body, a water outlet is formed in the bottom of the box body, an installation plate is arranged in the box body, the crystallization box is movably installed in the box body, the crystallization bars are arranged in the crystallization box, sliding grooves II are formed in the two sides of the crystallization box, the handles are installed in the sliding grooves II, and the filter screen is arranged on the handle. The bottom of the box body and the mounting plate are provided with clamps I, one side of each crystallization box is provided with a clamp II, a handle on each crystallization box is located between the corresponding clamp I and the corresponding clamp II, the crystallization boxes are locked by moving the handles to be matched with the clamps I, and linkage of two or more crystallization boxes is a