| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus for preventing the ash clog of the pressure detector seat of a combustion furnace enabling stable pressure measurement by securely preventing the clog by ashes. SOLUTION: A rotating fin 5e is screwed to send ashes to the side of the combustion furnace with rotation and in normal operation, the rotating fin 5e is placed at an upper part and rakes out ashes 16 by rotating the rotating fin 5e at predetermined intervals. When the air is supplied to the rotating fin 5e by an air cylinder 5 as a driving source giving rotating force to the rotating fin 5e, the air inside the air cylinder 5 is discharged into the pressure detector seat 3 and the piled ashes 16 being raked can be dropped by force into the combustion furnace. By stopping the air supply to the air cylinder 5 and turning a switching valve 6 to switch the air supply to the side of the restoring spring 5d, the air cylinder 5 returns by the force of the restoring spring 5d, and the discharged air acts as the force to return the gas inside the pressure detector seat 3 and the raked up ashes 16 into the inside of the combustion furnace, as the supplied air from the switching valve 6 is connected to the case 5a containing the restoring spring 5d of the pressure detector seat 3.
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