Title:
METHOD OF DISTRIBUTING QUANTITY OF BULK MATERIAL AIR-BLOWN THROUGH SUPPLY TUBE
Document Type and Number:
Japanese Patent JPS5875218
Kind Code:
A
Abstract:
A method and apparatus for dosing particulate bulk material to a continuous gas stream for feeding through a closed conveyor (3) to a burner (1) is described. The pressure values of the gas stream are measured at at least two spaced sensor points (3a, 3b) along the conveyor. The value (P2) obtained at the sensor (3b) downstream is modified to obtain a corrected value (P2') proportionally to the counter- pressure closest to the burner (1). This corrected value P(2') is then subtracted from the value (P1) obtained at the upstream sensor (3a). The resultant ( DELTA p') is indicative of the actual pressure differential across the sensed sector of the conveyor (3), corrected for spurious false readings. This resultant actual pressure differential is then compared with a predetermined desired pressure differential for the system, which is a relationship of the desired counter-pressure and the desired load. The result ( DELTA p) of the comparison is then employed as the control signal for regulation of the bulk material feed device.
Inventors:
DEIITAA HEEPU
Application Number:
JP14903682A
Publication Date:
May 06, 1983
Filing Date:
August 27, 1982
Export Citation:
Assignee:
WAESCHLE MASCHF GMBH
International Classes:
B05B7/14; G05D7/00; B05B12/08; B65G53/66; F23K3/02; G05D7/06; (IPC1-7): G05D7/00
Domestic Patent References:
| JPS5178362A | 1976-07-07 | |||
| JPS5653307A | 1981-05-12 | |||
| JPS5514409A | 1980-01-31 |
Attorney, Agent or Firm:
Toshio Yano