초록 ▼

The invention relates a pulverizer equipped with a free air purging mechanical seal/classifier design that provides free air purging of the seal gap between the mechanical seal assembly and the classifier. The invention also provides a coarse particle extraction assembly wherein the coarse particles

The invention relates a pulverizer equipped with a free air purging mechanical seal/classifier design that provides free air purging of the seal gap between the mechanical seal assembly and the classifier. The invention also provides a coarse particle extraction assembly wherein the coarse particles rejected by the classifier can be reliably discharged from the pulverizer or recirculated to the inlet. Furthermore, the rejected coarse particles can be subjected to jet milling and then recirculated. The invention also provides a free air cooling arrangement for cooling both the lower bearing member and the area of the vertical drive shaft where it meets the lower bearing member. The invention also provides an improved feed nozzle for use of the pulverizer in drying applications.

대표청구항 ▼

1. A particle pulverizing apparatus comprising;a cylindrical housing oriented along a vertical axis, the housing provided with an inner liner, an inlet, an outlet, and a rotatable drive shaft oriented along the vertical axis and supporting a rotor having an outer diameter such that a particle pulver

1. A particle pulverizing apparatus comprising;a cylindrical housing oriented along a vertical axis, the housing provided with an inner liner, an inlet, an outlet, and a rotatable drive shaft oriented along the vertical axis and supporting a rotor having an outer diameter such that a particle pulverizing domain exists between the inner liner and the rotor and a coarse particle extraction assembly comprising an extraction port in the housing, a pipe positioned adjacent to the extraction port and including an air nozzle therein, wherein the air nozzle discharges an air jet into the pipe to generate a vacuum at the extraction port to extract coarse particles from the housing through the extraction port.