GB1334156A - System for controlling the rate of delivery from a bunker or hopper by a conveyor belt - Google Patents

System for controlling the rate of delivery from a bunker or hopper by a conveyor belt

Info

Publication number
GB1334156A
GB1334156A GB1384371A GB1384371A GB1334156A GB 1334156 A GB1334156 A GB 1334156A GB 1384371 A GB1384371 A GB 1384371A GB 1384371 A GB1384371 A GB 1384371A GB 1334156 A GB1334156 A GB 1334156A
Authority
GB
United Kingdom
Prior art keywords
pulses
signal
hopper
derived
conveyor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1384371A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carl Schenck AG
Original Assignee
Carl Schenck Maschinenfabrik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Carl Schenck Maschinenfabrik GmbH filed Critical Carl Schenck Maschinenfabrik GmbH
Publication of GB1334156A publication Critical patent/GB1334156A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
    • G01G11/08—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers having means for controlling the rate of feed or discharge
    • G01G11/083—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers having means for controlling the rate of feed or discharge of the weight-belt or weigh-auger type
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
    • G01G11/006—Special taring or checking devices therefor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Conveyors (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)

Abstract

1334156 Automatic feed control CARL SCHENCK MASCHINENFABRIK GmbH 7 May 1971 [19 Oct 1970] 13843/71 Heading G3R In Fig.1, material supplied from a hopper 1 is delivered by a conveyor 3 and a signal corresponding to the mass flow is derived at 8 from electrical transducers 5 and 7 respectively detecting the weight on an the speed of the conveyor. This signal is compared at 10 with a signal from 9 corresponding to a desired rate of flow so that any error is automatically corrected by control of the speed of conveyor motor 6. Pulses corresponding to rate of change in weight of and hence the mass flow from hopper 1 are derived from a transducer 15, converted to volumetric flow by a potentiometer 26, and compared by a counter 18 with pulses corresponding to the desired volumetric flow derived at 19 from the actual or desired mass flow signal at 8 or 9. Any difference from this comparison then alters the datum of the first mentioned closed-loop control system at 20. This second control is rendered in-operative by a counter 28 after a predetermined number of pulses from generator 16 or 19. The second control system may be applied to a number of different feeders in sucession by the operation of selector switches 23-25. In a modification, Fig.2 (not shown), counters 18 and 28 are replaced by counters (30, 31) respectively responsive to the two gates of pulses, one (30) controlling the other (31, such as at (31) is responsive to pulses over a predetermined count interval so as to provide the datum altering signal as a function of the difference between the number of pulses counted in (31) over said interval and a pre-selected countvalue .
GB1384371A 1970-10-19 1971-05-07 System for controlling the rate of delivery from a bunker or hopper by a conveyor belt Expired GB1334156A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702051199 DE2051199B2 (en) 1970-10-19 1970-10-19 Arrangement for readjusting metering belt scales

Publications (1)

Publication Number Publication Date
GB1334156A true GB1334156A (en) 1973-10-17

Family

ID=5785527

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1384371A Expired GB1334156A (en) 1970-10-19 1971-05-07 System for controlling the rate of delivery from a bunker or hopper by a conveyor belt

Country Status (8)

Country Link
AT (1) AT330475B (en)
BE (1) BE774151A (en)
CH (1) CH517296A (en)
CS (1) CS167908B2 (en)
DE (1) DE2051199B2 (en)
FR (1) FR2112312A1 (en)
GB (1) GB1334156A (en)
NL (1) NL7016818A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010009641A1 (en) * 2010-02-27 2011-09-01 Bizerba Gmbh & Co. Kg Libra

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2623591A1 (en) * 1976-05-26 1977-12-08 Pfister Waagen Gmbh Controlled drive for proportionating belt type weigher - has drive pulley actuated by motor through clutch of induction or eddy current type

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010009641A1 (en) * 2010-02-27 2011-09-01 Bizerba Gmbh & Co. Kg Libra

Also Published As

Publication number Publication date
DE2051199A1 (en) 1972-04-20
AT330475B (en) 1976-07-12
DE2051199B2 (en) 1975-07-24
CH517296A (en) 1971-12-31
BE774151A (en) 1972-04-19
ATA1127270A (en) 1975-09-15
FR2112312A1 (en) 1972-06-16
CS167908B2 (en) 1976-05-28
NL7016818A (en) 1972-04-21

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees