Solid fuel pulverizing device and method for controlling same

A solid fuel pulverizing device configured to pulverize a solid fuel, the device comprising:

• a rotary table configured to rotate by a driving force from a drive unit;
• a roller configured to pulverize the solid fuel supplied from a fuel supply unit to the rotary table;
• a classifier configured to classify the solid fuel pulverized by the roller into pulverized fuel smaller than a predetermined particle size;
• a housing that houses the rotary table, the roller, and the classifier;
• a ventilation unit configured to ventilate an interior of the housing with primary air for supplying the solid fuel pulverized by the roller to the classifier;
• an internal pressure detector configured to detect an internal pressure of the housing relative to a reference pressure;
• a flow rate detector configured to detect a flow rate of the primary air blown into the interior of the housing by the ventilation unit;
• and
• a controller configured to perform control and transition the solid fuel pulverizing device to a stopped state upon the internal pressure detected by the internal pressure detector being a predetermined pressure or higher and the flow rate of the primary air detected by the flow rate detector being a predetermined flow rate or less.