DE3316795A1 - Device for keeping the weight of glass drops constant - Google Patents

Device for keeping the weight of glass drops constant

Info

Publication number
DE3316795A1
DE3316795A1 DE19833316795 DE3316795A DE3316795A1 DE 3316795 A1 DE3316795 A1 DE 3316795A1 DE 19833316795 DE19833316795 DE 19833316795 DE 3316795 A DE3316795 A DE 3316795A DE 3316795 A1 DE3316795 A1 DE 3316795A1
Authority
DE
Germany
Prior art keywords
glass
intermediate chamber
feeder
glass feeder
outlet opening
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.)
Withdrawn
Application number
DE19833316795
Other languages
German (de)
Inventor
Diether 6203 Hochheim Böttger
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.)
Eglasstrek Patent Promotion and Awarding GmbH
Original Assignee
Eglasstrek Patent Promotion and Awarding 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 Eglasstrek Patent Promotion and Awarding GmbH filed Critical Eglasstrek Patent Promotion and Awarding GmbH
Priority to DE19833316795 priority Critical patent/DE3316795A1/en
Publication of DE3316795A1 publication Critical patent/DE3316795A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B7/00—Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob, e.g. controlling the gob shape, weight or delivery tact
    • C03B7/08—Feeder spouts, e.g. gob feeders
    • C03B7/094—Means for heating, cooling or insulation
    • C03B7/096—Means for heating, cooling or insulation for heating
    • C03B7/098—Means for heating, cooling or insulation for heating electric

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Melting And Manufacturing (AREA)

Abstract

The invention relates to a device for controlling the weight of glass drops, which are fed to automatically operating machines for the manufacture of glass articles. According to the invention, the molten glass is passed from the glass feeder through at least one outflow opening located in the bottom of the glass feeder into a vertical, downwards-extending intermediate chamber, the temperature of the glass in this intermediate chamber being adjustable by electric heating of the boundary walls.

Description

Vorrichtung zur Glastropfen-Gewichtskonstanthaltung Device for keeping glass drop weight constant

Die Erfindung bezieht sich auf eine Vorrichtung zur Steuerung des Glastropfengewichtes von zuvor in einem Schmelzofen fließfähig gemachten Glases, oi die Glas tropfen automatisch arbeitenden Naschinen zur Herstellung von Glaswaren zugeführt werden.The invention relates to a device for controlling the The weight of the glass gob of glass that has previously been rendered flowable in a melting furnace, oi the glass drips are automatic machines for the production of glassware are fed.

Die bekannten Glasspeiser für schmelzflüssiges Glas DE AS 24 18 267, DE PS 20 05 234, haben den Nachteil, daß die Glastropfen keine Gewichtskonstanz, die durch eine zu große Temperaturdifferenz bewirkt wird, aufweisen.The known glass feeder for molten glass DE AS 24 18 267, DE PS 20 05 234, have the disadvantage that the glass drops are not constant in weight, which is caused by too great a temperature difference.

Dieser Nachteil wird in einem Referat "Strömungsverlauf und Tropfenbildung im Speiserkopf" Glas technische Berichte Jahrgang 1983, Nr. 4 beschrieben.This disadvantage will be discussed in a paper entitled "Flow characteristics and droplet formation in the riser head "Glass technical reports 1983, No. 4 described.

Demnach treten Temperaturdifferenzen im Tropfen von 10 % und mehr auf. In effektiven Temperaturen bedeutet dies bei 110°C eine Temperaturdifferenz innerhalb des Tropfens von 110 C und mehr.Accordingly, there are temperature differences in the drop of 10% and more on. In effective temperatures, this means a temperature difference at 110 ° C within the drop of 110 C and more.

Die Erfindung hat sich daher die Aufgabe gestellt, eine Vorrichtung zu schaffen, die die Temperaturdifferenzen im Glastropfen beseitigt und gleichzeitig durch eine geeignete Steuerung eine Gewichtskonstanz des Glastropfens gewährleistet.The invention has therefore set itself the task of providing a device to create that eliminates the temperature differences in the glass drop and at the same time a constant weight of the glass drop is guaranteed by a suitable control.

Zur Lösung dieser Aufgabe geht die Erfindung von einer Vorrichtung zur Glastropfenherstellung mit einem Glasspeiser für das geschmolzene Glas mit wenigstens einer Auslauföffnung und einem Plunger-Kolben, der durch seine vertikale Auf- und Äbwärtsbewegung das Glas aus der tropfenbildenden Düse ausstößt, aus.To solve this problem, the invention is based on a device for the production of glass gobs with a glass feeder for the molten glass with at least an outlet opening and a plunger piston, which by its vertical open and Downward movement ejects the glass from the drop-forming nozzle.

Die Erfindung schlägt eine Vorrichtung vor, wonach das geschmolzene Glas von einem Glasspeiser über wenigstens eine im Boden befindliche Auslauföffnung in eine vertikale, sich nach unten erstreckende Zwischenkammer geleitet, das Glas in dieser Zwischenkammer durch direkte elektrische Beheizung der Begrenzungswände in der Temperatur beeinflußt wird und somit eine Tropfengewichtskonstanz erfahren kann.The invention proposes a device, after which the molten Glass from a glass feeder via at least one outlet opening in the floor into a vertical, downwardly extending intermediate chamber, the glass in this intermediate chamber by direct electrical heating of the boundary walls is influenced in the temperature and thus experience a drop weight constancy can.

Die erfindungsgemäße Vorrichtung zur Durchführung dieses Verfahrens ist dadurch gekennzeichnet, daß zwischen Glasspeiser, in die die vom Schmelzofen fließfähig gemachte Glasmasse eintritt, und der tropfenbildenden Düse eine Zwischenkammer vorgesehen ist, wobei diese vorzugsweise durch ein metallrohr aus einer Platin-Legierung ausgebildet ist. Die zur Zwischenkammer führende Auslauföffnung im Boden des Glasspeisers kann dem Querschnitt der Zwischenkammer entsprechen oder aber jede andere strömungstechnisch geeignete Form aufweisen. Die Begrenzungswände der isolierten Zwischenkammer, werden bevorzugt aus einer Platin-Legierung gebildet. Die Höhe der Zwischenkammer richtet sich nach dem Durchsatz bzw. der Tropfenzahl/Minute und dem Gewicht des Tropfens.The device according to the invention for carrying out this method is characterized in that between the glass feeder into which the melting furnace Flowable glass mass enters, and the drop-forming nozzle an intermediate chamber is provided, this being preferred through a metal pipe a platinum alloy is formed. The outlet opening leading to the intermediate chamber in the bottom of the glass feeder can correspond to the cross section of the intermediate chamber or but have any other form that is suitable in terms of flow technology. The boundary walls the isolated intermediate chamber, are preferably formed from a platinum alloy. The height of the intermediate chamber depends on the throughput or the number of drops / minute and the weight of the drop.

Zur Beheizung der Zwischenkammer wird das Metallrohr selbst als stromgespeistes Element herangezogen, indem das Rohr als Widerstand ineinen Niederspannungsstromkreis eingeschaltet wird.To heat the intermediate chamber, the metal pipe itself is supplied with electricity Element used by placing the tube as a resistor in a low voltage circuit is switched on.

Der Vorteil der erfindungsgemäßen Vorrichtung besteht darin, daß mit geringer elektrischer Leistung die großen Temperaturdifferenzen in dem Glastropfen von innen nach außen ausgeglichen werden können.The advantage of the device according to the invention is that with low electrical power the large temperature differences in the glass drop can be balanced from the inside out.

Die Tatsache, daß die geschmolzene Glasmasse von dem Glasspeiser bis zur tropfenbildenden Düse eine Zwischenkammer von steuerbarer Innentemperatur durchlaufen lsluß, bewirkt, durch den im Vergleich mit den bekannten Vorrichtungen, eine exakte Glastropfengewichtskonstanz.The fact that the molten glass mass from the glass feeder up Pass through an intermediate chamber with controllable internal temperature to the drop-forming nozzle In comparison with the known devices, the conclusion caused by an exact Glass drop weight constancy.

Eine mögliche Ausführung der erfindungsgemäßen Vorrichtung ist in der Zeichnung dargestellt und wird anhand dieser beschrieben.A possible embodiment of the device according to the invention is shown in shown in the drawing and is described with reference to this.

Ein Glasspeiser 1, für die Glasschmelze, weist eine Auslauföffnung 2 auf, deren Querschnitt mit Hilfe eines Kolb-en-Plungers 3 verändert werden kann.A glass feeder 1 for the glass melt has an outlet opening 2 on, the cross-section of which can be changed with the aid of a piston-en-plunger 3.

Die am Boden des Glasspeisers 1 befindliche Auslauföffnung 2 verbindet den Innenraum des Glasspeisers 1 mit der Zwischenkammer 4. Die Auslauföffnung 2 hat in der gezeigten Ausführung einen runden Querschnitt. Gegebenenfalls ist die Auslauföffnung zum Schutz gegen Korrosionen mit einem Platinblech von geringer Wandstärke ausgekleidet.The outlet opening 2 located at the bottom of the glass feeder 1 connects the interior of the glass feeder 1 with the intermediate chamber 4. The outlet opening 2 has a round cross-section in the embodiment shown. Possibly is the Outlet opening for protection against corrosion with a platinum sheet of low wall thickness lined.

Die Durchtrittsöffnung in der Zwischenkammer 4 ist an die Auslauföffnung 2 des Glasspeisers 1 so angeschlossen, daß die geschmolzene Glasmasse aus dem Innenraum des Glasspeisers 1 direkt und strömungsgünstig in die Zwischenkammer 4 eintreten kann.The passage opening in the intermediate chamber 4 is at the outlet opening 2 of the glass feeder 1 connected so that the molten glass mass from the interior of the glass feeder 1 enter the intermediate chamber 4 directly and in a streamlined manner can.

Die Zçischenkammer 4 besteht vorzugsweise aus einem Platin-Metallrohr, kann aber auch durch andere Metalle, die den hohen Temperaturen der Glasmasse standhalten, hergestellt werden. Weiterhin wird vorgeschlagen, daß die Zwischenkammer 4 aus einer keramischen Masse ausgeführt ist, wobei die Beheizung indirekt durch Widerstandsdrähte erfolgen kann. Eine direkte Beheizung der keramischen Masse ist ebenfalls denkbar.The intermingling chamber 4 preferably consists of a platinum metal tube, but can also be done by other metals that can withstand the high temperatures of the glass mass, getting produced. It is also proposed that the intermediate chamber 4 from a ceramic mass is carried out, the heating indirectly through resistance wires can be done. Direct heating of the ceramic mass is also conceivable.

Eine Isolierverkleidung 5 umgibt die Zwischenkammer 4.An insulating cladding 5 surrounds the intermediate chamber 4.

An den Enden der Zwischenkammer 4 sind Kontaktanschlüsse 6. Die Kontaktanschlüsse dienen zum Anschluß an eine Stromquelle zur Beheizung der Zwischenkammer 4.At the ends of the intermediate chamber 4 there are contact connections 6. The contact connections serve for connection to a power source for heating the intermediate chamber 4.

Der Strom «-ird durch eine nicht dargestellte Stromquelle über einen Transformator 8 und Stromschienen 7 zu den Nontaktanschlüssen 6 geführt.The current "is supplied by a current source (not shown) via a Transformer 8 and busbars 7 led to the contact connections 6.

Die Zwischenkammer 4 wird an ihrem Ende von der glasformenden Düse 9 abgeschlossen, wobei die Düse 9 ein, zwei oder mehrere Offnungen haben kann Die Glasmasse tritt aus der Düse 9 mit Hilfe des Kolben-Plungers 3 aus und bildet so den Glas tropfen, der in eine nicht dargestellte Maschine zur Verformung von Glas gegenstände geleitet wird.The intermediate chamber 4 is at its end from the glass-forming nozzle 9 completed, wherein the nozzle 9 can have one, two or more openings Glass mass emerges from the nozzle 9 with the aid of the piston plunger 3 and thus forms the glass drop, which is in a machine (not shown) for deforming glass objects is directed.

Die elektrische Leistung der Zwischenkammer 4 wird durch ein nicht dargestelltes Thermoelement und einen elektr(:n:i-cl!cA Regler gesteuert. Für die elektrische Leistung der Zwischenkammer 4 werden Stromstärken von 3000 Ampere und 1 - 1,5 Volt benötigt.The electrical power of the intermediate chamber 4 is not by a shown thermocouple and an electric (: n: i-cl! cA controller. For the electrical power of the intermediate chamber 4 are currents of 3000 amps and 1 - 1.5 volts required.

Infolge der Verweilzeit der Glasmasse in der eletrisch beheizten Zwischenkamlner 4 werden die Bedingungen des Glases durch eine intensive allseitige Temperaturbeeinfluf:nig verbessert.As a result of the residence time of the glass mass in the electrically heated intermediate chamber 4 the conditions of the glass are influenced by an intensive all-round temperature influence: nig improved.

Die mit der erfinduiigsgemäßen Vorrichtung erreichten Temperaturhomogenität des Gla stropfens gewährleistet eine hervorragende Qualiteit und Gewicht skonst anthaltung von Tropfen zu Tropfen.The temperature homogeneity achieved with the device according to the invention The glass stopper ensures excellent quality and weight-saving holding from drop to drop.

- Patentansprüche - - patent claims -

Claims (1)

Patentansprüche 1.) Vorrichtung zur Steuerung der Gewichtskonstanz ron Glastropfen, die periodisch durch einen Plunger-Kolben aus einem Glasspeiser ausgestoßen werden. Claims 1.) Device for controlling the constant weight ron glass droplets that periodically flow through a plunger from a glass feeder be expelled. d a d u r c h g e k e n n z e i c h n e t , daß das geschmolzene Glas vom Glasspeiser (1) über wenigstens eine im Boden des Glasspeisers befindliche Auslauföffnung (2) in eine vertikale sich nach unten erstreckende Zwischenkammer (4) geleitet wird, das Glas in dieser Zwischenkammer (4) durch direkte elektrische Beheizung der Begrenzungswände in der Temperatur beeinflußbar ist. d u r c h e k e nn n z e i c h n e t that the melted Glass from the glass feeder (1) via at least one located in the bottom of the glass feeder Outlet opening (2) into a vertical, downwardly extending intermediate chamber (4) is conducted to the glass in this intermediate chamber (4) by direct electrical Heating of the boundary walls in the temperature can be influenced. 2.) Vorrichtung nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß zlçischen dem Glasspeiser (1) und der tropfenformenden Düse (9) eine Zwischenkammer (4) vorne~ sehen ist, wobei diese durch ein Metallrohr, vorzugsweise durch eine Platin-Legierung ausgebildet ist.2.) Device according to claim 1, d a d u r c h g e k e n n z e i c n e t that between the glass feeder (1) and the drop-forming nozzle (9) one Intermediate chamber (4) can be seen at the front ~, this being through a metal tube, preferably is formed by a platinum alloy. 3.) Vorrichtung nach Anspruch 2, d a d u r c h g e k e n n z e i c h n e t 9 daß das Metallrohr aus einem warmfesten, nichtrostenden Stahl, ausgebildet ist.3.) Device according to claim 2, d a d u r c h g e k e n n z e i c h n e t 9 that the metal tube is made of a heat-resistant, stainless steel is. 4.) Vorrichtun nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß die Zwischenkamwer (4) aus einer keramischen Nasse ausgeführt ist, wobei die elektrische Heizeinrichtung indirekt durch Widerstandsdrähte oder direkt an die feuerfeste keramische Masse angeschlossen ist.4.) device according to claim 1, d a d u r c h g e k e n n z e i c n e t that the intermediate chamber (4) is made of a ceramic liquid, wherein the electrical heating means indirectly through resistance wires or directly is connected to the refractory ceramic mass. 5.) Vorrichtung nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß die zur Zwischenkammer (4) führende Auslauföffnung (2) im Boden des Glasspeisers (1) dem Querschnitt der Zwischenkammer (4) entspricht oder jede andere strömungstechnische geeignete Form aufweist.5.) Device according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the to the intermediate chamber (4) leading outlet opening (2) in the bottom of the Glass feeder (1) corresponds to the cross section of the intermediate chamber (4) or any other Has fluidic suitable shape. 6.) Vorrichtung nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß die Höhe der Zwischenkammer (4) größer als deren Querschnitt ist.6.) Device according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the height of the intermediate chamber (4) is greater than its cross section. 7.) Vorrichtung nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß die Zwischenkammer (4) zur elektrischen Beheizung selbst als 8.) Vorrichtung nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e daß die Auslauföffnung (2) des Glasspeisers (i) durch ein Platinblech gegen Korrosionen geschützt ist.7.) Device according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the intermediate chamber (4) for electrical heating itself as 8th.) Apparatus according to Claim 1, in which the outlet opening is indicated (2) of the glass feeder (i) is protected against corrosion by a platinum sheet. 9.) Vorrichtung nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t daß die elektrische Leistung der Zwischenkammer (4) durch ein Thermoelement, das an einen elektronischen Regler angeschlossen ist, gesteuert wird.9.) Device according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the electrical power of the intermediate chamber (4) by a thermocouple, connected to an electronic controller.
DE19833316795 1983-05-07 1983-05-07 Device for keeping the weight of glass drops constant Withdrawn DE3316795A1 (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4143185A1 (en) * 1991-12-30 1993-07-01 Vma Ges Fuer Visuelle Messtech Automatic monitoring of the weight of glass gobs - involves using surface camera to build=up picture of gob formation which can be graphically compared with pre-weighed gobs
WO2002046672A1 (en) * 2000-12-07 2002-06-13 Messer Griesheim Gmbh Smelting furnace
WO2002068348A1 (en) * 2001-02-23 2002-09-06 Omg Ag & Co. Kg Devices for glass melt delivery and methods for using them
US6889526B2 (en) 2001-08-08 2005-05-10 Richard B. Pitbladdo Overflow downdrawn glass forming method and apparatus
US6895782B2 (en) 2002-08-08 2005-05-24 Richard B. Pitbladdo Overflow downdrawn glass forming method and apparatus
US6997017B2 (en) 2001-05-09 2006-02-14 Pitbladdo Richard B Overflow downdraw glass forming method and apparatus
US7681414B2 (en) 2001-08-08 2010-03-23 Corning Incorporated Overflow downdraw glass forming method and apparatus
US7690221B2 (en) 2004-02-23 2010-04-06 Corning Incorporated Sheet width control for overflow downdraw sheet glass forming apparatus
US7748236B2 (en) 2005-12-27 2010-07-06 Corning Incorporated Overflow downdraw glass forming method and apparatus
US8042361B2 (en) 2004-07-20 2011-10-25 Corning Incorporated Overflow downdraw glass forming method and apparatus
US9233869B2 (en) 2001-08-08 2016-01-12 Corning Incorporated Overflow downdraw glass forming method and apparatus

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4143185A1 (en) * 1991-12-30 1993-07-01 Vma Ges Fuer Visuelle Messtech Automatic monitoring of the weight of glass gobs - involves using surface camera to build=up picture of gob formation which can be graphically compared with pre-weighed gobs
WO2002046672A1 (en) * 2000-12-07 2002-06-13 Messer Griesheim Gmbh Smelting furnace
WO2002068348A1 (en) * 2001-02-23 2002-09-06 Omg Ag & Co. Kg Devices for glass melt delivery and methods for using them
KR100773222B1 (en) * 2001-02-23 2007-11-02 우미코레 아게 운트 코 카게 Devices for glass melt delivery and methods for using them
US7013677B2 (en) 2001-02-23 2006-03-21 Umicore Ag & Co. Kg Device for glass melt delivery and method for using them
US6997017B2 (en) 2001-05-09 2006-02-14 Pitbladdo Richard B Overflow downdraw glass forming method and apparatus
US8365556B2 (en) 2001-08-08 2013-02-05 Corning Incorporated Overflow downdraw glass forming method and apparatus
US8056365B2 (en) 2001-08-08 2011-11-15 Corning Incorporated Sheet glass forming apparatus
US7155935B2 (en) 2001-08-08 2007-01-02 Bruce Technology Llc Sheet glass forming apparatus
US9233869B2 (en) 2001-08-08 2016-01-12 Corning Incorporated Overflow downdraw glass forming method and apparatus
US7681414B2 (en) 2001-08-08 2010-03-23 Corning Incorporated Overflow downdraw glass forming method and apparatus
US6889526B2 (en) 2001-08-08 2005-05-10 Richard B. Pitbladdo Overflow downdrawn glass forming method and apparatus
US9802851B2 (en) 2001-08-08 2017-10-31 Corning Incorporated Overflow downdraw glass forming method and apparatus
US8006517B2 (en) 2001-08-08 2011-08-30 Corning Incorporated Overflow downdraw glass forming method and apparatus
US6990834B2 (en) 2002-08-08 2006-01-31 Bruce Technology, Llc Overflow downdraw glass forming method and apparatus
US6895782B2 (en) 2002-08-08 2005-05-24 Richard B. Pitbladdo Overflow downdrawn glass forming method and apparatus
US9643873B2 (en) 2004-02-23 2017-05-09 Corning Incorporated Sheet width control for overflow downdraw sheet glass forming apparatus
US8661850B2 (en) 2004-02-23 2014-03-04 Corning Incorporated Sheet width control for overflow downdraw sheet glass forming apparatus
US8230699B2 (en) 2004-02-23 2012-07-31 Corning Incorporated Sheet width control for overflow downdraw sheet glass forming apparatus
US7690221B2 (en) 2004-02-23 2010-04-06 Corning Incorporated Sheet width control for overflow downdraw sheet glass forming apparatus
US8042361B2 (en) 2004-07-20 2011-10-25 Corning Incorporated Overflow downdraw glass forming method and apparatus
US8474286B2 (en) 2004-07-20 2013-07-02 Corning Incorporated Overflow downdraw glass forming method and apparatus
US8001805B2 (en) 2005-12-27 2011-08-23 Corning Incorporated Overflow downdraw glass forming method and apparatus
US7748236B2 (en) 2005-12-27 2010-07-06 Corning Incorporated Overflow downdraw glass forming method and apparatus

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