Relief spring stop bolt assembly for shallow bowl mills

摘要

A relief spring stop bolt assembly for shallow bowl coal pulverizing mills and a method of using the same to smooth operation of such a pulverizer during low load operation is described. The subject relief spring stop bolt assembly is sized to be used with or for “retrofit” within existing journal space and existing journal opening cover space of a shallow bowl mill to effectively smooth rough operating conditions.

主权项

1. A pulverizer stop bolt assembly for a pulverizer, the pulverizer stop bolt assembly comprising:
a stop bolt that includes a base portion and a contact portion that has a free end and an elongated arm, the elongated arm includes an oversized aperture and is disposed opposite the free end, a portion of the elongated arm is positioned in a slot of the base portion such that the base portion is moveably interlocked with the contact portion via a pin that extends through the oversized aperture and into the base portion; a spring disposed between the base portion and the contact portion; and wherein compression of the spring between the contact portion and the base portion prevents a journal assembly of the pulverizer from contacting a grinding surface of the pulverizer upon bearing a gravity load of the journal assembly, and the spring provides load dampening and spring assist to smooth load operation of the pulverizer when not bearing the gravity load of the journal assembly.