System, method and apparatus for upgrading a pulverizer
A method of upgrading a vertical spindle pulverizer includes the steps of removing a cover from a journal opening in a housing of the pulverizer to access a grinding zone of the pulverizer, removing a first journal assembly having a toroidal grinding roll from the pulverizer through the journal opening, removing a plurality of toroidal table segments from a grinding table of the pulverizer, installing a plurality of inclined bull ring segments on the grinding table, installing a second journal assembly having a conical grinding roll in the pulverizer, and replacing the cover over the journal opening. The inclined bull ring segments are configured to register with a grinding surface of the conical grinding roll.
1. A vertical spindle pulverizer, comprising:
a housing having a shaft coupled for rotation therein;
a grinding table rotatably mounted on the shaft, the grinding table having a plurality of flat bull ring-shaped segments on the grinding table;
a journal assembly pivotally mounted on the housing, wherein the journal assembly is pivotally mounted on the housing via two opposed pivot shaft segments that do not extend a length of a pivot bracket and are accessible from outside of the housing; and
a conical-shaped grinding roll coupled to the journal assembly.
2. A vertical spindle pulverizer, comprising:
a housing having a shaft coupled for rotation therein;
a grinding table rotatably mounted on the shaft, the grinding table having a plurality of inclined bull ring segments;
a journal assembly pivotally mounted on the housing, wherein the journal assembly is pivotally mounted on the housing via two opposed pivot shaft segments that do not extend a length of a pivot bracket and are accessible from outside of the housing; and
a conical-shaped grinding roll coupled to the journal assembly;
wherein the journal assembly and grinding roll are retrofit into the pulverizer in place of an existing journal assembly having a toroidal-shaped grinding roll.
3. A vertical spindle pulverizer, comprising:
a housing having a shaft coupled for rotation therein;
a grinding table rotatably mounted on the shaft, the grinding table having a plurality of flat bull ring-shaped segments that have been retrofit onto the grinding table in place of toroidal-shaped table segments;
a journal assembly pivotally mounted on the housing, wherein the journal assembly is pivotally mounted on the housing via two opposed pivot shaft segments that do not extend a length of a pivot bracket and are accessible from outside of the housing; and
a conical-shaped grinding roll coupled to the journal assembly;
wherein the journal assembly and grinding roll are retrofit into the pulverizer in place of an existing journal assembly having a toroidal-shaped grinding roll.