Exhauster fan bearing assembly and cooling system for pulverizer

An exhauster for a pulverized solid fuel firing system, comprising:

• a housing;
• an exhauster fan for exhausting coal through an exhauster fan housing, the exhauster fan being mountable within the housing on a shaft rotatable about a shaft rotational axis and the housing having an inlet generally aligned with the shaft rotational axis such that coal entering the housing through the inlet contacts the rotating exhauster fan and is redirected thereby along a radial outlet path, the exhauster fan including a plurality of blades;
• and
• an exhauster fan bearing assembly, comprising:
• a pedestal housing having an opening at a top portion, the pedestal housing defining an interior space with access thereto through the opening;
• a bearing housing disposed at the top portion of the pedestal housing, the bearing housing having first and second openings disposed at opposite ends of the bearing housing;
• first and second bearing assemblies disposed at the first and second openings, respectively, the shaft extending through the bearing housing via the first and second openings, the shaft rotatable about the shaft rotational axis via the first and second bearing assemblies;
• and
• a sump housing operably coupled to a bottom of the bearing housing, the sump housing extending through the opening and into the interior space of the pedestal housing, the sump housing defining a reservoir for a lubricant in fluid communication with the first and second bearing assemblies.