[54] MEANS AND APPARATUS FOR
THROTTLING A DRY PULVERIZED SOLID
MATERIAL PUMP
[75] Inventors: John W. Meyer, Palo Alto; Arnold D.
Daniel, Jr., Alameda County; John
H. Bonin, Sunnyvale, all of Calif.
[73] Assignee: Lockheed Missiles & Space Company, Inc., Sunnyvale, Calif.
[21] Appl. No.: 199,861
[22] Filed: Oct. 23, 1980
Related U.S. Application Data
[63] Continuation-in-part of Ser. No. 36,578, May 7, 1979, abandoned.
[51] Int. C1.3 B65G 53/40; B65G 53/66
[52] U.S. CI 406/14; 406/71;
406/98; 406/99; 414/217; 417/71
[58] Field of Search 415/116,117;
60/39.46 S; 406/14, 93, 94, 71, 99, 98, 52; 414/217; 239/423, 433; 417/71, 900
[56] References Cited
U.S. PATENT DOCUMENTS
3,182,825 5/1965 Zellerhoff 414/217
3,389,938 6/1968 Frazier 406/14
3,424,386 1/1969 Maasberg et al 239/433 X
4,265,580 5/1981 Meyer 239/224 X
FOREIGN PATENT DOCUMENTS
2816316 12/1978 Fed. Rep. of Germany 414/217
Primary Examiner—Carlton R. Croyle
Assistant Examiner—Edward Look
Attorney, Agent, or Firm—H. Donald Volk
[57] ABSTRACT
Method and apparatus are shown for control of continuous feeding of pulverized material to a high pressure container. A rotor is located within the high pressure container. The pulverized material is fed from a feed hopper through a stationary feed pipe to a vented spinup zone chamber to a plurality of sprues mounted in the rotor. Control of the pressure within control nozzles downstream from the sprues adjusts the flow rate of coal through the sprues.
10 Claims, 9 Drawing Figures
