Grinding mill
First Claim
1. A grinding mill comprising a mill cylinder, a vertically mounted main shaft coupled at the upper end to a motor mounted atop the mill cylinder to be driven thereby and extending along the axis of the mill cylinder, and means mounted in descending order on the main shaft including a finished product conveying means, a classifying means, a grinding roller means and a decelerating means, a fixed sleeve fixed on the bottom of the mill cylinder to support a rotary bushing by means of bearings, a centrifugal device fixed to the upper end of the rotary bushing, a roller seat fixed likewise to the upper end of the rotary bushing and extending downwardly and radially, a plurality of roller shafts hinged at the lower end to the roller seat so as to pivot relative to the axis of the rotary bushing, and a corresponding plurality of grinding rollers detachably mounted on the upper end of each roller shaft.
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Accused Products
Abstract
A centrifugal grinding mill of the ring-roller type incorporating a decelerating means, a grinding roller means, a classifying means and a finished product conveying means, which means are driven by a single shaft driven by a single motor, is suitable for grinding soft, hard and solid (ores), viscous, and fibrous raw materials to desired fineness. The distance between grinding ring and rollers is adjustable. Under the grinding roller means there is provided a means for removing waste materials. By means of the guiding of an air stream in cooperation with the classifying means the separate vanes of which can be selectively changed in number, it is possible to obtain finished particles ranging in size from several ten to more than ten thousand mesh (U.S. standard mesh).
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Citations
16 Claims
- 1. A grinding mill comprising a mill cylinder, a vertically mounted main shaft coupled at the upper end to a motor mounted atop the mill cylinder to be driven thereby and extending along the axis of the mill cylinder, and means mounted in descending order on the main shaft including a finished product conveying means, a classifying means, a grinding roller means and a decelerating means, a fixed sleeve fixed on the bottom of the mill cylinder to support a rotary bushing by means of bearings, a centrifugal device fixed to the upper end of the rotary bushing, a roller seat fixed likewise to the upper end of the rotary bushing and extending downwardly and radially, a plurality of roller shafts hinged at the lower end to the roller seat so as to pivot relative to the axis of the rotary bushing, and a corresponding plurality of grinding rollers detachably mounted on the upper end of each roller shaft.
Specification