Bearing block sealing device

The invention relates to a bearing block sealing device which comprises a framework, a bearing block and a stop cover. The bearing block is arranged on the framework, the stop cover which encircles the bearing block is arranged on the outer wall of the bearing block, a surface cover is arranged below the stop cover around the periphery of the bearing block, openings are formed in the upper side and the lower side of the surface cover, the aperture of the upper opening of the surface cover is smaller than the diameter of the stop cover, the top of the surface cover is in contact with the wall of the lower end of the stop cover, the bottom of the surface cover is in contact with the framework, an elastic retaining collar is arranged in the wall of the lower end of the stop cover, and the lower portion of the elastic retaining collar extends out of the stop cover and is butted to the outer wall of the surface cover. The bearing block sealing device is applicable to sealing bearing blocks in high-temperature environments.