Automatic instrument dustproof shell

The utility model relates to an automatic instrument dustproof shell, and belongs to the technical field of instrument dust prevention. The dustproof shell comprises a dustproof shell body, a shell body cover, an arc-shaped block, a swing plate and a transmission mechanism, the shell body cover is arranged on the dustproof shell body, a transparent observation plate is arranged on the shell body cover, the arc-shaped block is arranged on the shell body cover on the lower side of the outer portion of the transparent observation plate, a wedge-shaped arc groove is formed in the arc-shaped block, and a wedge-shaped sliding block is embedded in the wedge-shaped arc groove. A swing plate is arranged on the upper side of the wedge-shaped sliding block and comprises a plate body, a transmission structure is externally connected to the bottom of the plate body, a plurality of magnetic blocks are arranged on the plate body, a cloth wiping strip is vertically arranged on the inner side of the plate body, swing plates a