Ash leakage prevention device for grate cooler transmission shaft

The utility model provides an ash leakage prevention device for a transmission shaft of a grate cooler, and belongs to the technical field of grate coolers. The problems that a transmission sealing plate of an existing grate cooler is prone to disengagement after the grate cooler operates for a period of time to generate a large gap, the sealing effect is poor, air and dust in the grate cooler leak out, much dust exists in a construction site, workers need to sweep the air and the dust frequently, and the working intensity of the workers is increased are solved. The utility model comprises a housing, the shell comprises a fixing plate, a sliding sealing plate and a cover plate. The fixing plate and the cover plate are each provided with a first sliding groove used for sliding of the motorshaft. The sliding sealing plate is provided with an installation hole used for installing a motor shaft, a sealing mechanism is arranged on the inner ring of the installation hole, the sliding sealing plate is installed betw