High-temperature protection device for cloth bag of bag type dust collector

The utility model provides a bag type dust collector cloth bag high temperature protection device which comprises a main pipeline, the main pipeline is simultaneously connected with a first branch pipeline and a second branch pipeline, the first branch pipeline and the second branch pipeline are respectively connected with a bypass pipeline and a dust removal pipeline, and a first lining pipe and a second lining pipe are arranged in the bypass pipeline. A third liner pipe and a fourth liner pipe are arranged in the dust removal pipeline, the opening ends of the first liner pipe, the second liner pipe, the third liner pipe and the fourth liner pipe are rotationally connected with flashboards, the middles of the flashboards are rotationally connected with connecting rods, and the connecting rods are rotationally connected with the ends of piston rods and the sides, close to the telescopic air cylinders, of the piston rods. A first transmission case and a second transmission case are symmetrically arranged on th