EP0366997A1 - Procédé pour désaérer une installation de remplissage et dispositif pour la mise en oeuvre du procédé - Google Patents

Procédé pour désaérer une installation de remplissage et dispositif pour la mise en oeuvre du procédé Download PDF

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Publication number
EP0366997A1
EP0366997A1 EP19890119060 EP89119060A EP0366997A1 EP 0366997 A1 EP0366997 A1 EP 0366997A1 EP 19890119060 EP19890119060 EP 19890119060 EP 89119060 A EP89119060 A EP 89119060A EP 0366997 A1 EP0366997 A1 EP 0366997A1
Authority
EP
European Patent Office
Prior art keywords
control valve
filling
closed
opened
vacuum
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
EP19890119060
Other languages
German (de)
English (en)
Other versions
EP0366997B1 (fr
Inventor
Göran c/o Tetra Pak Inc. Hanérus
Tommy Ljungström
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.)
Tetra Laval Holdings and Finance SA
Original Assignee
Tetra Laval Holdings and Finance SA
Tetra Alfa Holdings SA
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 Tetra Laval Holdings and Finance SA, Tetra Alfa Holdings SA filed Critical Tetra Laval Holdings and Finance SA
Priority to AT89119060T priority Critical patent/ATE99245T1/de
Publication of EP0366997A1 publication Critical patent/EP0366997A1/fr
Application granted granted Critical
Publication of EP0366997B1 publication Critical patent/EP0366997B1/fr
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
    • B65B37/00—Supplying or feeding fluent-solid, plastic, or liquid material, or loose masses of small articles, to be packaged

Definitions

  • the invention relates to a method for venting a system for filling containers with a metered amount of liquid without air inclusion by means of a metering pump, in which at least one control valve arranged at the inlet of the filling tube is opened and closed intermittently and the liquid is supplied via a buffer container.
  • the invention relates to a device for venting such a system for filling containers with a metered amount of liquid without air, and this device has a buffer container connected to a feed line, under which a control valve housing with at least one control valve is arranged, which is the input side of a the filling tube located below it, which can be closed at the outlet with a filling nozzle, is closed or connected to the buffer tank.
  • a system for filling with a metered amount of liquid without air inclusion is known, for example milk.
  • Filling without the inclusion of air requires various measures, in particular venting at the beginning of the filling operation, if, for example, a change has been made to a different type of pack or a different filling material.
  • milk is fed from a central distribution via a feed line to the buffer container and, controlled by valves, conveyed into a filling pipe arranged under the valves, at the exit of which the tubular milk pack to be filled is located.
  • Air can now collect in this fill tube, and the invention aims to provide measures to remove this air.
  • the known metering pumps generally have a piston, the pump stroke of which specifies the metered amount of liquid which is filled into the package.
  • the invention is therefore based on the object of a method for venting such a system with the aforementioned
  • the task also applies to the improvement of a device for venting such a system with those mentioned above Features that allow a time-definable working method for venting, after which the filling operation can preferably be started by a simple push of a button at a time at which the operator can reasonably expect that the system no longer has any air pockets.
  • this object is achieved in that a vacuum is generated in the filling tube provided on the outlet side with a filling nozzle and in the buffer tank while closing the filling nozzle, the control valve being opened, and in that after the air has bubbled upward after an adjustable time interval the control valve is closed.
  • a vacuum is generated in the filling tube provided on the outlet side with a filling nozzle and in the buffer tank while closing the filling nozzle, the control valve being opened, and in that after the air has bubbled upward after an adjustable time interval the control valve is closed.
  • the shortest possible time for expelling the air inclusions is desired. By creating the vacuum, this is surprisingly easy and easy. If the filling tube is closed at the top by the control valve mentioned, the control valve is opened for venting, so that liquid present in the filling tube can be held and at the same time air enclosed therein can rise upwards. After a period of time, this control valve is closed, any other work, including bleeding, can be done and then the production operation can begin. This time interval is set based on experience and by qualified specialists.
  • the venting method can be carried out according to the invention without filling packs, so that considerable savings can be made in rejects.
  • vacuum in filling systems is already known per se in another context.
  • a device for the intermittent supply of liquid with a drip-free valve the liquid being supplied to a buffer container being arranged below the valves.
  • Devices create a vacuum in the buffer tank.
  • this vacuum is intended to reduce the hydrostatic pressure in the line area with the valves, which the liquid would otherwise generate at the valves.
  • the return springs of the valves can be set so that they always close or open at the right moment, which is particularly important for the foam-forming milk.
  • the vacuum provided by this known method cannot be used to vent the filling system. It has also been shown that the response of spring-loaded valves is delayed too much.
  • the dosing pump connected to its filling area, ie two branches of the plant that have to be vented, which is why the two control valves are arranged separately and actuated separately. In this way, one branch can be vented first and closed in this clean state and then the other branch of the system can be vented.
  • the vacuum is first generated in the buffer container, the lower control valve is closed and the upper control valve is opened; then both valves are opened at the same time; after which the upper one is closed, then the lower one is closed, the upper one is opened and finally the upper control valve is closed again, while the filling nozzle remains closed all the time.
  • air inclusions can be removed with certainty after a certain time, so that a certain program is run at fixed time intervals, after the completion of which the system can be automatically signaled to start. Even inexperienced operating personnel can then start the filling operation with a simple push of a button. But that means an automatic ventilation without waste product.
  • the venting method of this type is already very well thought out, but can be improved with regard to a further detail.
  • a filling tube closed on the outlet side by a filling nozzle is assumed, and a liquid column which has a certain weight can be assumed above the outlet-side filling nozzle.
  • Become out of this Liquid column Removed air inclusions by the method according to the invention, one must expect an increase in weight or an increase in the liquid column, because the expelled air is replaced by the liquid, so that a greater weight acts on the outlet filling nozzle. It is therefore advantageous according to the invention if the vacuum in the buffer container is increased when the lower control valve is opened for the first time.
  • air pockets can be removed from the filling pipe above the filling nozzle on the outlet side by opening the lower control valve for the first time, so that the weight increase begins at this moment, which is neutralized again by the increased vacuum.
  • This equalization of the pressure force on the filling nozzle at the outlet end of the filling pipe by the increased suction force of the increased vacuum is particularly expedient if a filling nozzle that closes due to the negative pressure in the filling pipe is used.
  • the increase in weight when expelling the air inclusions could otherwise cause the filling nozzle to open partially because the closing force is no longer sufficient.
  • This risk is advantageous due to the intermediate step of increasing the vacuum in the buffer container and thus above the liquid column of the filling tube and can be eliminated again with simple means.
  • the control valve is positively controlled from the outside and the buffer tank is connected to a vacuum pump.
  • the positive control according to the invention acts on the one hand on the control valve and on the other hand on the drive of the vacuum pump, so that both units, the control valve and the vacuum pump, develop their effects in the ventilation system according to a certain program.
  • valves have generally been controlled by the state of the adjacent fluid, and in the case of liquid filling systems, the pressure of the filling material inside the system is a spring force had to overcome before the relevant valve provided with this spring could be actuated.
  • the forced control of the new valve in the ventilation device not only makes its function more reliable, so that 100% closing is ensured after the switching access has been completed (the same when opening), but the switching function is also shortened because the valves are controlled from the outside can react faster.
  • the expulsion of the air inclusions can be considerably accelerated in the manner described above.
  • the features of the ventilation device according to the invention therefore make it possible to vent a filling system in the shortest possible time, so that the operator of the filling system can bring the system into the normal operating state without air inclusions in an optimally short time.
  • an upper, externally separately controlled control valve is arranged at a distance above the lower control valve and if the connecting line of the metering pump is connected to the control valve housing between the lower and the upper control valve.
  • the filling nozzle consists of an elastomeric material.
  • a rubber filling nozzle can be used which, when closed, has two cross-shaped slots which are kept closed by the negative pressure located behind it inside the filling tube.
  • Such a rubber nozzle has the natural tendency to close, which is why a low vacuum in the tube above the rubber nozzle relative to the outside atmosphere is sufficient to close or keep the nozzle closed.
  • a liquid column can be held in a completely closed filling tube above the closed nozzle without the risk of dripping.
  • the use of such a rubber nozzle in a venting device of the type described here has hitherto not been known.
  • control valves and / or the vacuum pump are connected to a computer control, the advantages of rapid and reliable ventilation described above can be achieved. It is state of the art today to feed simple or complicated programs into a computer which can output control signals in a time-controlled manner with great accuracy, so that the venting method described here can be carried out in a precisely timed manner with great reliability.
  • FIG. 5 where on the schematically arranged conveyor belt 1 there is a liquid pack open on one side at the top kung 2, the lower, with a filling nozzle 3 made of rubber end of a filling tube 4 surrounds.
  • the filling nozzle 3 is shown largely immersed in the pack 2. It can be provided in a suitable system for filling paper packs with a metered amount of milk, a relative movement between the filling tube 4 and the pack 2, so that when the pack is empty, the filling nozzle 3 almost reaches the bottom of the pack 2 and here the filling process during slowly pulling the filling tube 4 out of the pack 2. Since the filling process as such is not important for the explanation of the process steps and device features of interest here, the above description of the filling should suffice.
  • a control valve housing 6 On the inlet side 5 of the filling pipe opposite the outlet of the filling pipe 4 with the filling nozzle 3, connected upwards, a control valve housing 6 is provided, which is designed in the form of a cylinder jacket with a side opening 7, from which the connecting line 8 of a metering pump 9 is branched, namely from a space 10 above the seat 11 of the lower control valve 11 'and under the valve seat 12 of the upper control valve 12'.
  • Both control valves 11 'and 12' are shown closed in the state of Figure 5. In addition, they appear highly schematic with the actuating rods protruding outside the control valve housing 6, which are only intended to symbolically illustrate the positive control of the control valves 11 ', 12' from the outside.
  • a buffer tank 13 which is provided on one side (bottom left here) with a feed line 14 and on the other side (top right here) with a vacuum line 15 and a vacuum pump 16.
  • the black space 18 arranged above the corrugated dividing line 20 above the liquid mass 17 with the gas-tightly closed lid 19 of the buffer container 13 represents the vacuum.
  • the venting device works with the two at a distance a control valves 11 'and 12' arranged one above the other as follows:
  • the pack 2 is no longer shown in the further FIGS. 1 to 4, and the buffer container 13 is also broken off at the top.
  • the filling nozzle 3 can be regarded as closed.
  • FIG. 1 After the vacuum in room 18 has been set, the state of FIG. 1 is switched to, i.e. the upper control valve 12 'is opened. Air inclusions located in the area of the metering pump 9 can now be removed upward into the buffer container 13 in the direction of the arrows 21. The liquid column located above the piston of the metering pump 9 is therefore also under the vacuum shown. The first subspace, i.e. the left branch of the venting device with the connecting line 8 is thus vented.
  • the vacuum pump 16 is switched on after a special part of the computer program in order to set the level of the vacuum in the room 18 to an increased value.
  • the filling nozzle 3 made of rubber remains closed, although the suction of small amounts of gas (air) from below into the filling pipe 4 cannot be completely ruled out, although there is no leak-tightness. This air bubbled in from below also migrates upwards according to the paths shown by the arrows 22.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
  • Vacuum Packaging (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Electrostatic Separation (AREA)
EP89119060A 1988-11-01 1989-10-13 Procédé pour désaérer une installation de remplissage et dispositif pour la mise en oeuvre du procédé Expired - Lifetime EP0366997B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89119060T ATE99245T1 (de) 1988-11-01 1989-10-13 Verfahren zum entlueften einer befuellungsanlage und vorrichtung zur durchfuehrung eines solchen verfahrens.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3837097A DE3837097A1 (de) 1988-11-01 1988-11-01 Verfahren zum entlueften einer befuellungsanlage und vorrichtung zur durchfuehrung eines solchen verfahrens
DE3837097 1988-11-01

Publications (2)

Publication Number Publication Date
EP0366997A1 true EP0366997A1 (fr) 1990-05-09
EP0366997B1 EP0366997B1 (fr) 1993-12-29

Family

ID=6366272

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89119060A Expired - Lifetime EP0366997B1 (fr) 1988-11-01 1989-10-13 Procédé pour désaérer une installation de remplissage et dispositif pour la mise en oeuvre du procédé

Country Status (14)

Country Link
US (1) US5009339A (fr)
EP (1) EP0366997B1 (fr)
JP (1) JP2782100B2 (fr)
KR (1) KR0138762B1 (fr)
AT (1) ATE99245T1 (fr)
AU (1) AU625836B2 (fr)
BR (1) BR8905548A (fr)
CA (1) CA2001917C (fr)
DE (2) DE3837097A1 (fr)
DK (1) DK166142C (fr)
ES (1) ES2047642T3 (fr)
FI (1) FI90648C (fr)
NO (1) NO177588C (fr)
RU (1) RU2003170C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111483964A (zh) * 2020-04-20 2020-08-04 深圳市步先包装机械有限公司 一种单工位高压灌装水生产线

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5687779A (en) * 1992-09-17 1997-11-18 Tetra Laval Holdings & Finance S.A. Packaging machine system for filling primary and secondary products into a container
US6065510A (en) * 1994-09-29 2000-05-23 Tetra Laval Holdings & Finance, Sa Fill system for primary and secondary products
US5533550A (en) * 1994-09-30 1996-07-09 Tetra Laval Holdings & Finance S.A. Tank venting apparatus for a packaging machine
US5865226A (en) * 1996-08-23 1999-02-02 Tetra Laval Holdings & Finance, S.A. Servo motor driven fill system
US6142169A (en) * 1997-03-28 2000-11-07 Tetra Laval Holdings & Finance, Sa Sterile tank venting system for a filling machine
US6640996B2 (en) * 2001-12-21 2003-11-04 Eastman Kodak Company Method and apparatus for online switching between supply vessels
DE102008061904A1 (de) * 2008-12-15 2010-06-17 Alldos Eichler Gmbh Verfahren und Vorrichtung zur Entgasung des Förderraums einer Dosierpumpe
US20110072984A1 (en) * 2009-09-30 2011-03-31 Chen Cheng-Feng Automatic bean curd maker
CN114771900B (zh) * 2022-06-20 2022-09-02 常州威斯敦粘合材料有限责任公司 Pur热熔胶灌装包装系统

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2160182A (en) * 1984-06-11 1985-12-18 Elopak Ltd Liquid supply apparatus

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4299338A (en) * 1979-09-27 1981-11-10 Wyman-Gordon Company Valve system
AU8647182A (en) * 1981-08-12 1983-02-17 Oenotec Pty. Ltd. Bottle filling device
US4437498A (en) * 1981-11-09 1984-03-20 Liquipak International, Inc. Carton filling apparatus
JPS6258961A (ja) * 1985-09-10 1987-03-14 Sanyo Kokusaku Pulp Co Ltd モノグリセライドの苦味，刺激味および臭気をマスキングする方法
DE3544448A1 (de) * 1985-12-16 1987-06-19 Handtmann Albert Maschf Verfahren und vorrichtung zum abfuellen lufthaltiger, verformbarer massen
FR2599711B1 (fr) * 1986-06-05 1988-09-23 Erca Holding Dispositif de dosage et de distribution pour le conditionnement de produits liquides
DE3622807A1 (de) * 1986-07-07 1988-01-21 Holstein & Kappert Maschf Verfahren zum abfuellen von fluessigkeiten in behaelter
JPH01502422A (ja) * 1986-11-10 1989-08-24 エルカ・ホールディング 少なくとも２つの糊状および／または液状製品の混合物での容器充填方法および装置
US4905744A (en) * 1987-07-23 1990-03-06 Elopak A/S Liquid-flow control apparatus
DE3834740A1 (de) * 1988-10-12 1990-04-19 Leybold Ag Vorrichtung zum nachfuellen von pulver, insbesondere fuer eine in einer vakuumkammer arbeitenden beschichtungseinrichtung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2160182A (en) * 1984-06-11 1985-12-18 Elopak Ltd Liquid supply apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111483964A (zh) * 2020-04-20 2020-08-04 深圳市步先包装机械有限公司 一种单工位高压灌装水生产线

Also Published As

Publication number Publication date
KR900007717A (ko) 1990-06-01
FI90648C (fi) 1994-03-10
CA2001917A1 (fr) 1990-05-01
AU4378489A (en) 1990-05-10
JPH02233301A (ja) 1990-09-14
DE3837097A1 (de) 1990-05-03
DK166142C (da) 1993-08-09
DK166142B (da) 1993-03-15
DK542189D0 (da) 1989-10-31
EP0366997B1 (fr) 1993-12-29
NO894333D0 (no) 1989-10-31
ES2047642T3 (es) 1994-03-01
DE3837097C2 (fr) 1992-03-19
NO177588B (no) 1995-07-10
JP2782100B2 (ja) 1998-07-30
ATE99245T1 (de) 1994-01-15
US5009339A (en) 1991-04-23
DK542189A (da) 1990-05-02
NO894333L (no) 1990-05-02
DE58906569D1 (de) 1994-02-10
FI90648B (fi) 1993-11-30
RU2003170C1 (ru) 1993-11-15
AU625836B2 (en) 1992-07-16
NO177588C (no) 1995-10-18
FI895142A0 (fi) 1989-10-30
KR0138762B1 (ko) 1998-06-01
BR8905548A (pt) 1990-05-29
CA2001917C (fr) 1998-06-16

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