GB1202221A - Apparatus for discharging material - Google Patents

Apparatus for discharging material

Info

Publication number
GB1202221A
GB1202221A GB239267A GB239267A GB1202221A GB 1202221 A GB1202221 A GB 1202221A GB 239267 A GB239267 A GB 239267A GB 239267 A GB239267 A GB 239267A GB 1202221 A GB1202221 A GB 1202221A
Authority
GB
United Kingdom
Prior art keywords
potentiometer
hopper
powder
amount
discharge
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
GB239267A
Inventor
Michael John Hare
Philip Hunter Wolfenden
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.)
Akzo Nobel UK PLC
Original Assignee
Courtaulds PLC
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 Courtaulds PLC filed Critical Courtaulds PLC
Priority to GB239267A priority Critical patent/GB1202221A/en
Publication of GB1202221A publication Critical patent/GB1202221A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G13/00—Weighing apparatus with automatic feed or discharge for weighing-out batches of material
    • G01G13/02—Means for automatically loading weigh pans or other receptacles, e.g. disposable containers, under control of the weighing mechanism
    • G01G13/022—Material feeding devices
    • G01G13/026—Material feeding devices by mechanical conveying means, e.g. belt or vibratory conveyor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G13/00—Weighing apparatus with automatic feed or discharge for weighing-out batches of material
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D11/00—Control of flow ratio
    • G05D11/02—Controlling ratio of two or more flows of fluid or fluent material
    • G05D11/13—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means
    • G05D11/131—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring the values related to the quantity of the individual components
    • G05D11/133—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring the values related to the quantity of the individual components with discontinuous action
    • G05D11/134—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring the values related to the quantity of the individual components with discontinuous action by sensing the weight of the individual components

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Basic Packing Technique (AREA)

Abstract

1,202,221. Automatic flow control. COURTAULDS Ltd. Jan. 16, 1968 [Jan. 17, 1967], No.2392/67. Heading G3R. A first electrical signal proportional to the weight of material in a hopper is compared with a second electrical signal which varies at a rate corresponding to a desired discharge rate so that any difference is effective to control discharge from the hopper to restore the discharge rate to the desired value, the second electrical signal being adjusted during re-filling of the hopper to cause subsequent discharge of the amount of material which would otherwise have been discharged but for re-filling. As shown, powder from a hopper 1 is supplied through an outlet 3 by a vibrator or screw feeder 2. The hopper and feeder are mounted on a weighing machine 4 associated with a pneumatic transmitter 5 so that changes in weight as the powder is discharged causes rotation of a potentiometer P 1 . Another potentiometer P 2 is driven by a motor M 1 at a speed representing a desired rate of discharge and whenever the position of potentiometer P 1 differs from that of potentiometer P 2 by more than a predetermined amount, a comparator 13 operates through an amplifier 19 and a controller 31 to switch on feeder 2 and thereby correct the amount of powder supplied. The speed of motor M 1 may be constant or, as shown, depend on the frequency of pulses from a meter 30 measuring the rate of flow of a liquid with which the powder is to be mixed so that the proportion of powder to liquid is maintained at a value determined by the setting of a pulse selector 29, switches S 1 -S 3 are moved to their other positions when the hopper is being re-filled so that feed from the hopper is stopped and, as potentiometer P 1 returns to its initial position, controller 31 causes potentiometer P 2 to return at a higher speed to a position which differs from that of potentiometer P 1 by an amount, determined by the movement of a potentiometer P 3 . corresponding to the amount of powder which would have been fed were it not for re-filling. Then, when switches S 1 -S 3 are restored to the positions shown, there is an additional feed of powder to make up for the filling interval.
GB239267A 1967-01-17 1967-01-17 Apparatus for discharging material Expired GB1202221A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB239267A GB1202221A (en) 1967-01-17 1967-01-17 Apparatus for discharging material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB239267A GB1202221A (en) 1967-01-17 1967-01-17 Apparatus for discharging material

Publications (1)

Publication Number Publication Date
GB1202221A true GB1202221A (en) 1970-08-12

Family

ID=9738741

Family Applications (1)

Application Number Title Priority Date Filing Date
GB239267A Expired GB1202221A (en) 1967-01-17 1967-01-17 Apparatus for discharging material

Country Status (1)

Country Link
GB (1) GB1202221A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109520603A (en) * 2018-11-19 2019-03-26 蔡欣 It is a kind of for steaming the automatic weighing device and its application method of cereal foods

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109520603A (en) * 2018-11-19 2019-03-26 蔡欣 It is a kind of for steaming the automatic weighing device and its application method of cereal foods

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Legal Events

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