EP0443349A1 - Pulverabgabevorrichtung - Google Patents

Pulverabgabevorrichtung Download PDF

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Publication number
EP0443349A1
EP0443349A1 EP91101245A EP91101245A EP0443349A1 EP 0443349 A1 EP0443349 A1 EP 0443349A1 EP 91101245 A EP91101245 A EP 91101245A EP 91101245 A EP91101245 A EP 91101245A EP 0443349 A1 EP0443349 A1 EP 0443349A1
Authority
EP
European Patent Office
Prior art keywords
container
conduit
powder
filter
purge gas
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.)
Granted
Application number
EP91101245A
Other languages
English (en)
French (fr)
Other versions
EP0443349B1 (de
Inventor
Leslie E. Stott
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.)
HOSOKAWA STOTT Ltd
Hosokawa Micron Ltd
Original Assignee
L E Stott Ltd
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 L E Stott Ltd filed Critical L E Stott Ltd
Publication of EP0443349A1 publication Critical patent/EP0443349A1/de
Application granted granted Critical
Publication of EP0443349B1 publication Critical patent/EP0443349B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/28—Controlling escape of air or dust from containers or receptacles during filling

Definitions

  • This invention relates to an apparatus for transferring powder from a bulk supply to containers of smaller size, for example, boxes and bags etc.
  • a draught created by an exhaust fan assists the removal of displaced air.
  • air from outside the container is allowed to enter the container through a third conduit and merge with the effluent stream of air leaving the container. In this way an improvement has been effected.
  • the present invention is directed to an improved packaging apparatus which avoids to a major extent the disadvantages of existing machines as well as providing other benefits.
  • this invention provides an apparatus for transferring powder from a bulk supply to a container comprising a first conduit extending from the bulk supply to the container, a second conduit enabling the introduction of a purge gas into the container, a third conduit communicating with both the container and a source of suction, a filter through which the purge gas passes on leaving the container and an inflatable annulus made from resilient material disposed round the ends of the conduits and adapted to enter into air-tight engagement with the wall of the container.
  • the term 'powder' is taken to include other forms of solid matter eg granules which has been sub-divided.
  • the apparatus comprises a dryer base valve 1 which controls a supply of powder 2 by means of screw feeder 3 along conduit 4. Passage of powder along conduit 4 is further controlled by valve 5 and the end of the conduit extends down into a bag 25 made of substantiallly air-tight material for example polythene.
  • a pipe 6 supplies nitrogen gas under control of valve 7 to a second conduit 8 which is disposed concentrically round the powder feed conduit 4.
  • the end of conduit 8 is blocked.
  • the wall of the conduit is provided with appertures 10 which communicate with a filter tube 11 to which is clamped an annular shaped filter 13.
  • the latter comprises a flexible sheet made of fibres or filaments which preferably prevent the build-up of electrostatic electricity.
  • the purpose of this filter is to permit nitrogen or other purge gas to vent from the container but at the same time to prevent the escape of any powder.
  • Filter tube 11 is connected through ducting 15 to air extraction valve 16 which acts in conjunction with an exhaust fan 17.
  • Ducting 15 also communicates with a ventilation system consisting of a perforated plenum 18 through a control flap valve 19.
  • conduits 4, 8 & 11 The arrangement of conduits 4, 8 & 11 is located within a metal frame 20 which is secured to the base 21 of a weighing machine.
  • the frame incorporates a return member 21 which supports a supply 22 of plastics lay-flat tubing which during the operation of the machine will be converted into filled bags.
  • the frame also supports filter 13 and an inflatable annulus 23 made of resilient material, preferably rubber.
  • a keg 24 containing a bag 25 filled with powder rests in the frame on the base 21 of the weighing machine.
  • the whole of the frame together with discharge ends of of the conduits are enclosed partly by a compartment 26 made conveniently of any suitable construction material for example a plastics coated wood laminate.
  • the weight of the compartment is supported from above rather than being carried by the weigh base 21 and the side of the compartment opposite the perforated plenum 18 is open so that an operative can carry out certain operations described below.
  • Each part of the machine for example the screw feeder and various valves operate in timed relationship under the control of a control system (not shown) which requires to be programmed for each powder that has to be packaged.
  • the operation of the machine can be described conveniently as being divided into three phases.
  • the exhaust fan 17 is switched on and initially the annulus 23 is in a deflated state. Valves 1, 5, 7 and 16 are all closed. A supply 22 of lay-flat plastics tubing for making bags is fed on to support 20 and a keg 24 with a pre-fitted liner of plastics material is placed on the base 21 beneath the outlet of powder feed conduit 4. The end of the layt-flat tube is then pulled down from support 20 and tied so as to effect closure. The closed end of the tube is then pulled down further until it rests on the bottom of the keg 24. The exhaust fan 17 is then switched on and valve 1 is opened. Powder now flows from dryer base valve 1 to screw feeder 3 to form a choke feed.
  • the annulus 23 is then inflated until it engages with the inner wall of the lay-flat tube which has now been converted by the tying operation into a bag and forms a seal.
  • Valve 16 is then opened and since the exhaust fan is operating already air is sucked out of the bag thereby causing the walls of the bag to collapse.
  • Valve 16 is then closed and valve 7 opened and allows nitrogen, under pressure, from a supply (not shown) to enter conduit 8 from pipe 6. Since the end of the conduit is blocked the gas passes through appertures 10 and then through the vertical porous wall of filter 13 into the space 27 between the annulus which has been inflated already and the conduits.
  • the gas passes through the top of the filter 13 during which process any powder caught up in the stream of gas is held back by the filtering action of the member.
  • the filtered gas continues up through the space 28 between the support 20 and the conduits and discharges finally into the compartment 26.
  • the start button of the sequencer on the weighing machine (not shown) is then operated to commence the filling operation.
  • the weighing system is set to net weighing mode after which powder feed valve 5 is opened. This has the effect of starting the screw feeder 3 which supplies powder at a rate which is determined by a setting on the control system. After a period the feeder is slowed until powder is being supplied at a dribble. Finally a cut-out is operated which stops the screw feeder when the required weight of powder has been delivered to the bag 25.
  • the feed valve 5 is then closed thereby isolating the feeding system from the rest of the machine.
  • the annulus is then deflated by operating a switch on the control system and valve 16 is then opened.
  • the contents of the bag 25 is subjected to negative pressure causing the wall of the bag to collapse and gas borne particles of powder are drawn on to the inner surface of the filter 13.
  • the neck of the bag is then tied at two positions 29 and 30 one above the other above the surface 31 of the powder.
  • the keg 24 containing the filled bag is then removed from the base 21 and a new keg is placed in position.
  • the end of the lay-flat tubing 22 closed by tie 28 is then pulled down and positioned on the bottom of the replacement keg so as to enable the cycle of operations to be repeated.
  • the machine can be modified in different ways.
  • any conventional feeding system can be used to replace the screw feeder 3.
  • the latter is preferred on account of the precision with which it enables the powder to be delivered.
  • the powder being incombustible air can be used as a purge gas and closing of the bags can be effected by heat sealing rather than with ties.
  • the machine can also be used for filling individual bags in which case storage facilities for continuous lay-flat tubing can also be dispensed with.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Nozzles (AREA)
  • Air Transport Of Granular Materials (AREA)
  • Sampling And Sample Adjustment (AREA)
EP91101245A 1990-02-08 1991-01-31 Pulverabgabevorrichtung Expired - Lifetime EP0443349B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9002836 1990-02-08
GB909002836A GB9002836D0 (en) 1990-02-08 1990-02-08 Powder dispensing apparatus

Publications (2)

Publication Number Publication Date
EP0443349A1 true EP0443349A1 (de) 1991-08-28
EP0443349B1 EP0443349B1 (de) 1994-12-21

Family

ID=10670636

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91101245A Expired - Lifetime EP0443349B1 (de) 1990-02-08 1991-01-31 Pulverabgabevorrichtung

Country Status (4)

Country Link
EP (1) EP0443349B1 (de)
AT (1) ATE115930T1 (de)
DE (1) DE69106011T2 (de)
GB (1) GB9002836D0 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5279339A (en) * 1989-09-15 1994-01-18 B.A.G. Corporation Full sack compressor
US5316056A (en) * 1991-03-14 1994-05-31 L. E. Stott Limited Powder dispensing apparatus
WO2003006314A1 (en) * 2001-07-11 2003-01-23 Degussa Ag Apparatus and process for filling containers with granular or pulverulent material
EP1364875A1 (de) * 2002-05-24 2003-11-26 Hecht Anlagenbau GmbH Vorrichtung zum Befüllen eines mit einem Innensack ausgerüsteten Gebindes mit einem Schüttgut
CN109051039A (zh) * 2018-08-31 2018-12-21 上海和创船舶工程有限公司 一种船载粉粒料打包充氮系统及其打包充氮方法
CN112874828A (zh) * 2021-01-28 2021-06-01 江苏安捷智能制造有限公司 一种清除包装袋袋内空气装置
CN114803008A (zh) * 2022-04-14 2022-07-29 东南大学 一种无人化粉碎真空人用抗生菌素超细药粉全自动包装线

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107298190B (zh) * 2015-09-01 2022-10-21 华联机械集团有限公司 用于自动上袋灌装机的吸尘机构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3693672A (en) * 1970-12-16 1972-09-26 Avon Prod Inc Container filling system
FR2194607A1 (de) * 1972-08-05 1974-03-01 Hesser Ag Maschf
EP0058805A1 (de) * 1980-11-28 1982-09-01 Société GENERALE DES ENGRAIS S.A. Verfahren und Vorrichtung zum Füllen weicher Verpackungen, wie z.B. Beuteln
EP0257683B1 (de) * 1986-08-28 1993-10-06 L. E. Stott Limited Pulverabgabevorrichtung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3693672A (en) * 1970-12-16 1972-09-26 Avon Prod Inc Container filling system
FR2194607A1 (de) * 1972-08-05 1974-03-01 Hesser Ag Maschf
EP0058805A1 (de) * 1980-11-28 1982-09-01 Société GENERALE DES ENGRAIS S.A. Verfahren und Vorrichtung zum Füllen weicher Verpackungen, wie z.B. Beuteln
EP0257683B1 (de) * 1986-08-28 1993-10-06 L. E. Stott Limited Pulverabgabevorrichtung

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5279339A (en) * 1989-09-15 1994-01-18 B.A.G. Corporation Full sack compressor
US5518048A (en) * 1989-09-15 1996-05-21 B.A.G. Corporation Full sack compressor
US5316056A (en) * 1991-03-14 1994-05-31 L. E. Stott Limited Powder dispensing apparatus
WO2003006314A1 (en) * 2001-07-11 2003-01-23 Degussa Ag Apparatus and process for filling containers with granular or pulverulent material
EP1364875A1 (de) * 2002-05-24 2003-11-26 Hecht Anlagenbau GmbH Vorrichtung zum Befüllen eines mit einem Innensack ausgerüsteten Gebindes mit einem Schüttgut
CN109051039A (zh) * 2018-08-31 2018-12-21 上海和创船舶工程有限公司 一种船载粉粒料打包充氮系统及其打包充氮方法
CN112874828A (zh) * 2021-01-28 2021-06-01 江苏安捷智能制造有限公司 一种清除包装袋袋内空气装置
CN114803008A (zh) * 2022-04-14 2022-07-29 东南大学 一种无人化粉碎真空人用抗生菌素超细药粉全自动包装线
CN114803008B (zh) * 2022-04-14 2024-04-19 东南大学 一种无人化粉碎真空人用抗生菌素超细药粉全自动包装线

Also Published As

Publication number Publication date
DE69106011T2 (de) 1995-07-20
DE69106011D1 (de) 1995-02-02
EP0443349B1 (de) 1994-12-21
ATE115930T1 (de) 1995-01-15
GB9002836D0 (en) 1990-04-04

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