Loading system for vertical material size reduction system
The invention provides a loading system for a vertical material size reduction system including a pressure frame configured and adapted to be attached to at least one roller wheel assembly of the vertical material size reduction system. The loading system also includes at least one hydraulic cylinder operably connected to the pressure frame. The hydraulic cylinder is configured and adapted to apply a force to the pressure frame to apply pressure through the at least one roller wheel assembly to a grinding table of the vertical material size reduction system. The invention also provides a kit and a method for retrofitting a vertical material size reduction system accordingly.
1 . A loading system for a vertical material size reduction system comprising:
a) a pressure frame configured and adapted to be attached to at least one roller wheel assembly of the vertical material size reduction system; and
b) at least one hydraulic cylinder operably connected to the pressure frame, the hydraulic cylinder being configured and adapted to apply a variable force to the pressure frame to apply pressure through the at least one roller wheel assembly to a grinding table of the vertical material size reduction system.
2 . A loading system as recited in claim 1 , wherein the at least one hydraulic cylinder includes a first pressure chamber on one side of a hydraulic piston, and a second pressure chamber on an opposite side of the hydraulic piston, and wherein the hydraulic cylinder is configured and adapted to control pressure between the at least one roller wheel assembly and the grinding table based on a pressure differential between the first and second pressure chambers.
3 . A loading system as recited in claim 2 , wherein the at least one hydraulic cylinder includes a pneumatic element configured and adapted to absorb mechanical shock.
4 . A loading system as recited in claim 3 , further comprising at least one tensioning rod connecting the at least one hydraulic cylinder to the pressure frame.
5 . A loading system as recited in claim 4 , wherein the at least one tensioning rod is connected to the pressure frame in a manner that prevents relative rotational movement between the pressure frame and the tensioning rod along a lengthwise axis defined by the tensioning rod.
6 . A loading system as recited in claim 5 , further comprising a plurality of pendulum adjustment connectors mounted to the pressure frame, the pendulum adjustment connectors being configured and adapted to attach roller wheel assemblies to the pressure frame and to align the roller wheel assemblies with the grinding table.
7 . A loading system as recited in claim 1 , wherein the at least one hydraulic cylinder is configured and adapted to raise the at least one roller wheel assembly off from a grinding table during startup of the vertical material size reduction system.
8 . A loading system as recited in claim 1 , wherein the at least one hydraulic cylinder is configured and adapted to control pressure between the at least one roller wheel assembly and the grinding table in response to coal throughput rates for the vertical material size reduction system.
9 . A loading system as recited in claim 1 , wherein the at least one hydraulic cylinder is configured and adapted to lift the at least one roller wheel assembly from the grinding table.
10 . A vertical pulverizer for pulverizing coal comprising:
a) a pressure frame;
b) at least one roller wheel assembly attached to the pressure frame;
c) a rotatable grinding table configured and adapted to rotate and to grind coal between the grinding table and the at least one roller wheel assembly; and
d) at least one hydraulic cylinder operably connected to the pressure frame, the hydraulic cylinder being configured and adapted to apply a force to the pressure frame to apply pressure through the at least one roller wheel assembly to the grinding table of the vertical pulverizer.
11 . A vertical pulverizer as recited in claim 10 , wherein the at least one hydraulic cylinder includes a first pressure chamber on one side of a hydraulic piston, and a second pressure chamber on an opposite side of the hydraulic piston, and wherein the hydraulic cylinder is configured and adapted to control pressure between the at least one roller wheel assembly and the grinding table based on a pressure differential between the first and second pressure chambers.
12 . A vertical pulverizer as recited in claim 11 , wherein the at least one hydraulic cylinder includes a pneumatic element configured and adapted to absorb mechanical shock.
13 . A vertical pulverizer as recited in claim 12 , further comprising at least one tensioning rod connecting the at least one hydraulic cylinder to the pressure frame.
14 . A vertical pulverizer as recited in claim 13 , wherein the at least one tensioning rod is connected to the pressure frame in a manner that prevents relative rotational movement between the pressure frame and the tensioning rod along a lengthwise axis defined by the tensioning rod.
15 . A vertical pulverizer as recited in claim 14 , further comprising a plurality of pendulum adjustment connectors mounted to the pressure frame, the pendulum adjustment connectors being configured and adapted to attach roller wheel assemblies to the pressure frame and to align the roller wheel assemblies with the grinding table.
16 . A vertical pulverizer as recited in claim 10 , wherein the at least one hydraulic cylinder is configured and adapted to raise the at least one roller wheel assembly off from a grinding table during startup of the vertical material size reduction system.
17 . A vertical pulverizer as recited in claim 10 , wherein the at least one hydraulic cylinder is configured and adapted to control pressure between the at least one roller wheel assembly and a grinding table in response to coal throughput rates for the vertical pulverizer.
18 . A kit for retrofitting a vertical material size reduction system, the kit comprising:
a) a pressure frame configured and adapted to be attached to at least one roller wheel assembly of the vertical material size reduction system;
b) at least one hydraulic cylinder configured and adapted to be operably connected to the pressure frame, the hydraulic cylinder being further configured and adapted to apply a force to the pressure frame to apply pressure through the at least one roller wheel assembly to a grinding table of the vertical material size reduction system.
19 . A kit for retrofitting a vertical material size reduction system as recited in claim 18 , wherein the at least one hydraulic cylinder includes a pneumatic element configured and adapted to absorb mechanical shock.
20 . A kit for retrofitting a vertical material size reduction system as recited in claim 19 , further comprising at least one tensioning rod, the at least one tensioning rod configured and adapted to connect the at least one hydraulic cylinder to the pressure frame.