Centrifugal Pulverizing Mill

Abstract

A pulverizer has arms connected to a vertically oriented rotating shaft at hubs. The arms are angled relative to radians extending from the shaft to be canted or offset. Pads can be oversized relative to the arms while being one of coplanar with the arms or recessed while possibly also having their radially inward face(s) angled to assist in resisting catching material thereon. A mechanical fuse connection can assist in connecting arms to the hub to prevent dangerous situations as well.

Having thus set forth the nature of the invention, what is claimed herein is: 
     
         1 . A pulverizer comprising:
 a head with an input port;   a bottom with a discharge port;   a housing extending intermediate the head and the bottom, said body having a vertically extending rotating shaft with a plurality of arms extending from hubs connected to the shaft thereby reducing input from a larger to a smaller size from the input port to the discharge port with the rotation of the arms in the housing;   wherein at least some of the arms are canted relative to the hub to which they are connected at a first connection position whereby they form an angle between 5 and 90 degrees relative to a radian extending through the arm.   
     
     
         2 . The pulverizer of  claim 1  wherein the at least some of the arms in the first connection position are angled between 5 and 30 degrees relative to a radian extending through the arm. 
     
     
         3 . The pulverizer of  claim 1  wherein the at least some of the arms have a second connection position at the hub whereby when in the second connection position, the angle relative to the radian is different than when in the first connection position. 
     
     
         4 . The pulverizer of  claim 1  further comprising a mechanical fuse retaining at least some of the arms in their first connection position whereby if a predetermined force is reached, the at least some of the arms release without breaking. 
     
     
         5 . The pulverizer of  claim 4  further comprising first and second pins connecting the arm to the hub wherein the second pin is the mechanical fuse and when it releases, the arm rotates about the first pin. 
     
     
         6 . The pulverizer of  claim 1  further comprising at least one coverplate formed of first and second portions interlocking with a puzzle connection on the hub. 
     
     
         7 . The pulverizer of  claim 1  wherein the hub further comprises first and second sandwich halves, with the arms connected between the first and second sandwich halves to the shaft. 
     
     
         8 . The pulverizer of  claim 1  further comprising pads connected to the arms whereby the pads have a front face and the arms have a front face, both in the direction of rotation, and the front face of the pads is one of (a) coplanar with the front face of the arms and (b) recessed relative thereto. 
     
     
         9 . The pulverizer of  claim 1  further comprising pads connected to the arms whereby the pads have a height exceeding a height of the arm. 
     
     
         10 . The pulverizer of  claim 9  wherein the height of the pads exceeding the height of the arm is at least by about 150 percent. 
     
     
         11 . The pulverizer of  claim 10  wherein the height of the pads exceeding the height of the arm is no more than about 300 percent. 
     
     
         12 . The pulverizer of  claim 9  wherein the pads are angled at a radially inner position of the pad to increase in height proceeding radially outwardly to assist in shedding material off the pad which might otherwise be entangled thereon. 
     
     
         13 . The pulverizer of  claim 1  further comprising shelves connected to the body with at least some of the shelves being positionably adjustable. 
     
     
         14 . The pulverizer of  claim 13  wherein the angle of at least some of the shelves can be adjusted. 
     
     
         15 . The pulverizer of  claim 13  wherein the height of at least some of the shelves can be adjusted. 
     
     
         16 . The pulverizer of  claim 13  wherein the adjustment of the shelves is automatedly controlled with a processor. 
     
     
         17 . The pulverizer of  claim 16  wherein the processor can adjust the speed of the rotation of the shaft with the shelf position to increase efficiency of output relative to energy consumption. 
     
     
         18 . A pulverizer comprising:
 a head with an input port;   a bottom with a discharge port   a housing extending intermediate the head and the bottom, said body having a vertically extending rotating shaft with a plurality of arms extending from hubs connected to the shaft thereby reducing input from a larger to a smaller size from the input port to the discharge port with the rotation of the arms in the housing;   wherein at least some of the arms have pads connected to the arms whereby the pads have a front face and the arms have a front fact, both in the direction of rotation, and the front face of the pads is one of (a) coplanar with the front face of the arms and (b) recessed relative thereto.   
     
     
         19 . The pulverizer of  claim 18  wherein the height of the pads exceeding the height of the arm is at least by about 150 percent. 
     
     
         20 . The pulverizer of  claim 18  wherein at least some of the arms are canted relative to the hub to which they are connected at a first connection position whereby they form an angle between 5 and 30 degrees relative to a radian extending through the arm.