EP0393008B1 - Device for cleaning and drying of glass panels - Google Patents

Device for cleaning and drying of glass panels Download PDF

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Publication number
EP0393008B1
EP0393008B1 EP90890068A EP90890068A EP0393008B1 EP 0393008 B1 EP0393008 B1 EP 0393008B1 EP 90890068 A EP90890068 A EP 90890068A EP 90890068 A EP90890068 A EP 90890068A EP 0393008 B1 EP0393008 B1 EP 0393008B1
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EP
European Patent Office
Prior art keywords
air outlet
glass sheet
outlet opening
closure
nozzle
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 - Lifetime
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EP90890068A
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German (de)
French (fr)
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EP0393008A2 (en
EP0393008A3 (en
Inventor
Peter Lisec
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
    • B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
    • B05B1/3046—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/005—Nozzles or other outlets specially adapted for discharging one or more gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B11/00—Cleaning flexible or delicate articles by methods or apparatus specially adapted thereto
    • B08B11/04—Cleaning flexible or delicate articles by methods or apparatus specially adapted thereto specially adapted for plate glass, e.g. prior to manufacture of windshields
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/12—Velocity of flow; Quantity of flow, e.g. by varying fan speed, by modifying cross flow area

Definitions

  • the invention relates to a device for cleaning and drying glass sheets, having a cleaning zone and a drying zone, wherein the glass sheet to be cleaned is moved through the device by means of a conveyor and wherein at least one pair of opposing nozzles is provided in the drying zone, which may be inclined extend to the direction of movement of the glass sheet to be dried in a plane parallel to the plane of the glass sheet, the air outlet openings of which face the glass sheet and are designed as a slit or as a series of openings and whose direction of blowout includes an acute angle with the glass sheet.
  • a device for cleaning and drying glass sheets with nozzles in the drying zone, which optionally extend obliquely to the direction of movement of the glass sheet to be cleaned or dried in a plane parallel to the plane of the glass sheet transverse to the direction of movement and whose air outlet opening faces the glass sheet and with it preferably includes an acute angle and is designed as a slot or as a series of openings, are known from EP-A-0213532.
  • a disadvantage of the known nozzles is that air constantly emerges from their air outlet openings, which are generally designed as a slot extending over the entire length of the nozzle, over the entire air outlet opening, ie over the entire height of the nozzle. Since the glass washing machines and also their drying zone are designed for the processing of the largest occurring window formats, the nozzles of the drying zone usually have a length of approximately 3 m measured transversely to the direction of movement of the glass plates.
  • a nozzle for an impact jet dryer is known, the air outlet opening facing the material to be dried and designed as a slot.
  • the air outlet opening of the nozzle is assigned closure members which, in their operative position, partially seal the air outlet opening.
  • the outlet opening of the slot nozzle is to be partially closed by two swords which can be swiveled into it synchronously in order to set the width over which the slot nozzle acts. In their operative position, the swords are received within the slot nozzle.
  • the invention has for its object to develop a device of the type mentioned so that the unused outflow of air from the air outlet opening of the nozzles is avoided without impairing the drying effect.
  • each nozzle is assigned at least one closure member which, in its operative position, closes the air outlet opening in some areas, which is arranged inside the preferably cylindrical nozzles and which is preferably cylindrical and can be fitted from the inside against the air outlet opening of the nozzles and has controllable closure body by means of a drive.
  • the effective length of the air outlet opening ie the area of the air outlet opening from which air actually emerges, can be adapted to the actual height of the glass sheet to be dried will.
  • the closure member or the closure members is (are) arranged inside the nozzle, the arrangement of the closure member does not interfere with the usual execution of the drying zone of a glass sheet washing machine. Since, according to the invention, a closure body which can be placed against the inside of the air outlet opening is provided, a secure, sealed closure supported by the excess pressure prevailing in the nozzle is ensured. It is preferred that the closure body of the closure members made of elastically deformable material, e.g. Foam rubber or foam plastic. If, in the device according to the invention, the air outlet opening of each nozzle is assigned a plurality of closure members, all of the closure members located in its operative position and at a distance from the upper end of the air outlet opening are also adjusted into their operative position.
  • the closure member extends over half the length of the air outlet opening.
  • the closure member can be continuous or subdivided, with a continuous closure member being preferred in the embodiment according to claim 2.
  • an embodiment of the invention has proven itself, according to which a sensor is provided which detects the height of the glass sheet to be dried and which emits a corresponding signal to the control of the drive for the closure members.
  • the dimension of the air outlet opening is automatically adapted to the dimension of the glass sheet to be dried, so that air losses and unnecessary blower performance are avoided.
  • the drive of the closure members is arranged outside the nozzle, with a drive motor, e.g. a pressure medium motor, this embodiment is advantageous since the drive motor for the closure member does not influence the design of the nozzle as such, so that it can still be optimized with regard to the flow behavior of the air passed through it and emerging from its air outlet opening.
  • a drive motor e.g. a pressure medium motor
  • the invention also extends to an embodiment in which it is provided that the speed of the conveyor device moving the glass sheet through the device is increased, at least in the region of the drying zone, in the case of air outlet openings partially closed by the closure members, compared to the conveying speed when the air outlet openings are fully open.
  • the speed of transport of the glass sheets through the drying zone is increased, it can also be provided that, in the case of air outlet openings partially closed by the closure members, the driving speed of cleaning brushes arranged in the cleaning zone, and possibly also the amounts of cleaning fluid and rinsing fluid supplied, compared to the amounts that are present when complete open air outlet openings are fed is increased.
  • the increase in speed when using the nozzle according to the invention in a cleaning device are provided for glass panels, without any disadvantage to the drying effect, if a blower is provided which conveys filtered and possibly dried air to the nozzles, and the conveying capacity of which is unchanged when the air outlet openings are partially closed by the closure members.
  • FIG. 1 shows a largely schematic and top view of a glass sheet washing machine with a drying zone
  • FIG. 2 shows a section along the line II-II in FIG. 1
  • FIG. 3 shows a section along the line III-III in FIG. 2.
  • a device 1 shown in FIGS. 1 and 2 for cleaning and drying glass sheets is divided into a cleaning zone 2 and a drying zone 3.
  • the glass sheets to be cleaned and dried are moved in the direction of arrow 4 on rollers 5 of a conveying device, standing up through device 1.
  • the conveyor device can also be designed as described and shown in EP-A-0174294.
  • round brushes 6 and 7 are shown in the cleaning zone 2, which are driven in rotation about essentially vertical axes.
  • the round brushes 6 and 7 are assigned nozzles, not shown, for the supply of cleaning or rinsing liquid.
  • band brushes cf. EP-A-0204063 can also be provided.
  • Vertical rollers 8 are provided in front of and behind and between the round brushes 6 and 7, which are driven in rotation and support the transport of the glass sheets through the device 1 (these rollers can be omitted if the conveyor is designed according to EP-A-0174294).
  • the drying zone 3 is provided in the device 1, which has two nozzles 10, which are oriented obliquely to the conveying direction 4 and extend from bottom to top in a plane parallel to the conveying plane.
  • the area swept by the nozzles 10 is, for example, 3 m in the height direction.
  • Each nozzle 10 of the oppositely arranged pair of nozzles 10 has an air outlet opening in the form of a longitudinal slot 11, from which air, which is supplied to the nozzles 10 from a blower, not shown, via lines, not shown, is blown obliquely onto the glass sheet to be dried, whereby the air flow is inclined against the direction of movement (arrow 4).
  • the device 1 has a housing 9 which houses the cleaning zone 2 and the drying zone 3.
  • the inlet and outlet openings of the housing 9 can be designed as also described in EP-A-0174294.
  • an intermediate wall equipped with a closure member known from EP-A-0174294 can be provided between the cleaning zone 2 and the drying zone 3 of the device 1.
  • Fig. 3 shows a closure member 12 which is provided in the interior of the nozzle 10.
  • the closure member 12 has a closure body 13 which is adjustably connected via a bracket 14 by a screw connection to the piston rod 15 of an actuating cylinder 16, which is arranged outside the nozzle 10 and connected to the latter via a nozzle 17.
  • the closure body 13 of the closure member 12 is made of resilient material and can be made of foam rubber (foam rubber) or foam plastic, for example exist or be formed by an elastically resilient, pressurized hollow body.
  • the closure body 13 of the closure member 12 can be withdrawn from the operative position shown in FIG. 3, in which it closes the air outlet opening 11 of the nozzle 10, into a rest position which releases the air outlet opening 11.
  • the air outlet opening 11 of the nozzle 10 is assigned a plurality of closure elements 12 which can be actuated independently of one another. It is further preferred that the closure members 12 are located in the upper region of the nozzle 10, i.e. are located in their area distant from the conveyor 5.
  • a closure member 12 is provided with a continuous closure body 13 (a plurality of pressure medium cylinders 16 can also be provided for its actuation), this preferably extends over the upper half of the air outlet opening 11, so that air can only escape from the lower half of the nozzle 10 , when the closure member of the lower half of the nozzle 10 can escape, so that only the most frequently occurring glass formats (height about 1.4 to 1.5 m) are coated with air to dry.
  • closure members 12 are provided in the nozzle 10, then these are preferably switched so that all the closure members 12 arranged above a closure member 12 in its operative position are also in their operative position closing the air outlet opening 11. In this way it is ensured that no air flows out of the nozzle 10 above the glass sheet to be dried.
  • a sensor 18 which responds to the upper edge of a glass sheet and can be moved up and down on a guide 19 can be provided in the device.
  • the sensor 18 adjusts itself according to the height of the upper edge of the glass sheet and emits a signal corresponding to its position to the control of the drive cylinder 16 for the closure members 12, whereupon all the closure members 12 located in the area above the determined height are closed.
  • the air outlet openings 11 of the nozzles 10 according to the invention are partially closed in their operative position by introducing closure members 12, then it is useful if the performance of the blower is not reduced. As a result, more air flows through the unclosed part of the air outlet opening 11 of the nozzle 10 in the time unit, so that it emerges at a higher speed and the drying effect is increased. This makes it possible to move a glass sheet through the drying zone 3 more quickly than hitherto when air flows unused from regions of the air outlet openings 11 located above the upper edge of the glass sheet.
  • the increase in the speed for moving the glass sheet in the direction of arrow 4 can also be controlled by the sensor 18 as a function of the detected altitude. Speed increases of up to 40% are possible if the air outlet openings of the nozzles 10 are half closed.
  • the conveying speed can also be increased in this area and, for example, the speed of the cleaning brushes 6 and 7 and the conveying devices 5, 8 from the currently usual 12 m / sec in the above mentioned Extent to be increased.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cleaning In General (AREA)
  • Drying Of Solid Materials (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

In the drying zone of a sheet glass washing machine, a pair of mutually opposed nozzles (10) is provided, the air outlet openings (11) of which face the glass sheet to be dried. At least one shutoff element (12) is associated with the air outlet opening (11) of each nozzle (10), this shutoff element, in its operative position, sealing off the top region of the air outlet opening (11). The shutoff element (12) extends over half the length of the air outlet opening (11) and has a cylindrical shutoff member (13) of an elastically yielding material which can be placed from the inside against the air outlet opening (11).

Description

Die Erfindung betrifft eine Vorrichtung zum Reinigen und Trocknen von Glastafeln, mit einer Reinigungszone und einer Trocknungszone, wobei die zu reinigende Glastafel mittels einer Fördereinrichtung durch die Vorrichtung bewegt wird und wobei in der Trockenzone wenigstens ein Paar einander gegenüberliegender Düsen vorgesehen ist, die sich gegebenenfalls schräg zur Bewegungsrichtung der zu trocknenden Glastafel in einer zur Ebene der Glastafel parallelen Ebene erstrecken, deren Luftaustrittsöffnungen der Glastafel zugekehrt und als Schlitz oder als Reihe von Öfnungen ausgebildet sind und deren Ausblasrichtung mit der Glastafel einen spitzen Winkel einschließt.The invention relates to a device for cleaning and drying glass sheets, having a cleaning zone and a drying zone, wherein the glass sheet to be cleaned is moved through the device by means of a conveyor and wherein at least one pair of opposing nozzles is provided in the drying zone, which may be inclined extend to the direction of movement of the glass sheet to be dried in a plane parallel to the plane of the glass sheet, the air outlet openings of which face the glass sheet and are designed as a slit or as a series of openings and whose direction of blowout includes an acute angle with the glass sheet.

Eine Vorrichtung zum Reinigen und Trocknen von Glastafeln, mit Düsen in der Trocknungszone, die sich gegebenenfalls schräg zur Bewegungsrichtung der zu reinigenden bzw. zu trocknenden Glastafel in einer zur Ebene der Glastafel parallelen Ebene quer zur Bewegungsrichtung erstrecken und deren Luftaustrittsöffnung der Glastafel zugekehrt und mit dieser vorzugsweise einen spitzen Winkel einschließt und als Schlitz oder als Reihe von Öffnungen ausgebildet ist, sind aus der EP-A-0213532 bekannt.A device for cleaning and drying glass sheets, with nozzles in the drying zone, which optionally extend obliquely to the direction of movement of the glass sheet to be cleaned or dried in a plane parallel to the plane of the glass sheet transverse to the direction of movement and whose air outlet opening faces the glass sheet and with it preferably includes an acute angle and is designed as a slot or as a series of openings, are known from EP-A-0213532.

Nachteilig bei den bekannten Düsen ist es, daß aus ihren Luftaustrittsöffnungen, die in der Regel als über die ganze Länge der Düse durchgehender Schlitz ausgebildet sind, Luft ständig über die gesamte Luftaustrittsöffnung, d.h. über die gesamte Höhe der Düse austritt. Da die Glaswaschmaschinen und auch deren Trocknungszone für die Bearbeitung der die größten vorkommenden Scheibenformaten auslegt sind, haben die Düsen der Trocknungszone für gewöhnlich eine quer zur Bewegungsrichtung der Glastafeln gemessene Länge von etwa 3 m.A disadvantage of the known nozzles is that air constantly emerges from their air outlet openings, which are generally designed as a slot extending over the entire length of the nozzle, over the entire air outlet opening, ie over the entire height of the nozzle. Since the glass washing machines and also their drying zone are designed for the processing of the largest occurring window formats, the nozzles of the drying zone usually have a length of approximately 3 m measured transversely to the direction of movement of the glass plates.

Da anderseits 95% der zu reinigenden und zu trocknenden Glastafeln nur etwa 1,4 bis 1,5 m hoch sind, strömt die Luft aus der Luftaustrittsöffnung der Düsen im über der zu trocknenden Glastafel liegenden Bereich ungenützt ab.On the other hand, since 95% of the glass sheets to be cleaned and dried are only about 1.4 to 1.5 m high, the air flows unused from the air outlet opening of the nozzles in the area above the glass sheet to be dried.

Aus der DE-B-1283159 ist eine Düse für einen Prallstrahltrockner bekannt, deren Luftaustrittsöffnung dem zu trocknendem Gut zugekehrt und als Schlitz ausgebildet ist. Der Luftaustrittsöffnung der Düse sind Verschlußorgane zugeordnet, die in ihrer Wirkstellung die Luftaustrittsöffnung bereichsweise verschließen. Bei dieser aus der DE-B-1283159 bekannten Vorrichtung soll die Austrittsöffnung der Schlitzdüse durch zwei synchron in diese einschwenkbare Schwerter teilweise verschlossen werden, um die Breite einzustellen, über welche die Schlitzdüse wirkt. In ihrer Wirkstellung sind die Schwerter innerhalb der Schlitzdüse aufgenommen.From DE-B-1283159 a nozzle for an impact jet dryer is known, the air outlet opening facing the material to be dried and designed as a slot. The air outlet opening of the nozzle is assigned closure members which, in their operative position, partially seal the air outlet opening. In this device known from DE-B-1283159, the outlet opening of the slot nozzle is to be partially closed by two swords which can be swiveled into it synchronously in order to set the width over which the slot nozzle acts. In their operative position, the swords are received within the slot nozzle.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Gattung so weiterzubilden, daß ohne Beeinträchtigung der Trocknungswirkung das ungenützte Abströmen von Luft aus der Luftaustrittsöffnung der Düsen vermieden wird.The invention has for its object to develop a device of the type mentioned so that the unused outflow of air from the air outlet opening of the nozzles is avoided without impairing the drying effect.

Erfindungsgemäß wird dies dadurch erreicht, daß der Luftaustrittsöffnung jeder Düse wenigstens ein Verschlußorgan zugeordnet ist, das in seiner Wirkstellung die Luftaustrittsöffnung bereichsweise verschließt, das im Inneren der vorzugsweise zylinderförmigen Düsen angeordnet ist und das einen vorzugsweise zylinderförmigen, von innen gegen die Luftaustrittsöffnung der Düsen anlegbaren und mittels eines Antriebes steuerbaren Verschlußkörper aufweist.According to the invention, this is achieved in that the air outlet opening of each nozzle is assigned at least one closure member which, in its operative position, closes the air outlet opening in some areas, which is arranged inside the preferably cylindrical nozzles and which is preferably cylindrical and can be fitted from the inside against the air outlet opening of the nozzles and has controllable closure body by means of a drive.

Durch die erfindungsgemäße Ausbildung kann der wirksame Länge der Luftaustrittsöffnung, d.h. der Bereich der Luftaustrittsöffnung, aus dem tatsächlich Luft austritt, an die tatsächliche Höhe der zu trocknenden Glastafel angepaßt werden.With the design according to the invention, the effective length of the air outlet opening, ie the area of the air outlet opening from which air actually emerges, can be adapted to the actual height of the glass sheet to be dried will.

Da das Verschlußorgan oder die Verschlußorgane im Inneren der Düse angeordnet ist (sind), stört die Anordnung des Verschlußorganes die übliche Ausführung der Trocknungszone einer Glastafelwaschmaschine nicht. Da erfindungsgemäß ein von innen gegen die Luftaustrittsöffnung anlegbarer Verschlußkörper vorgesehen ist, wird ein sicherer, dichter und vom in der Düse herrschender Überdruck unterstützter Abschluß gewährleistet. Bevorzugt ist dabei, daß die Verschlußkörper der Verschlußorgane aus elastisch verformbarem Werkstoff, z.B. Schaumgummi oder Schaumkunststoff, bestehen. Wenn bei der erfindungsgemäßen Vorrichtung der Luftaustrittsöffnung jeder Düse mehrere Verschlußorgane zugeordnet sind, sind alle über einem in seiner Wirkstellung befindlichen, im Abstand vom oberen Ende der Luftaustrittsöffnung angeordneten Verschlußorgan angeordneten Verschlußorgane ebenfalls in ihre Wirkstellung verstellt.Since the closure member or the closure members is (are) arranged inside the nozzle, the arrangement of the closure member does not interfere with the usual execution of the drying zone of a glass sheet washing machine. Since, according to the invention, a closure body which can be placed against the inside of the air outlet opening is provided, a secure, sealed closure supported by the excess pressure prevailing in the nozzle is ensured. It is preferred that the closure body of the closure members made of elastically deformable material, e.g. Foam rubber or foam plastic. If, in the device according to the invention, the air outlet opening of each nozzle is assigned a plurality of closure members, all of the closure members located in its operative position and at a distance from the upper end of the air outlet opening are also adjusted into their operative position.

Da überwiegend Glastafeln mit einer Höhe von 1,4 m bis 1,5 m nach dem Waschen zu trocknen sind bevor sie der Isolierglasherstellung zugeführt werden, ist im Rahmen der Erfindung bevorzugt, daß sich das Verschlußorgan über die halbe Länge der Luftaustrittsöffnung erstreckt.Since predominantly glass panels with a height of 1.4 m to 1.5 m are to be dried after washing before they are fed to the production of insulating glass, it is preferred within the scope of the invention that the closure member extends over half the length of the air outlet opening.

Bei dieser Ausführungsform, wie auch bei der Ausführungsform gemäß Anspruch 1 kann das Verschlußorgan durchgehend oder unterteilt sein, wobei bei der Ausführungsform nach Anspruch 2 ein durchgehendes Verschlußorgan bevorzugt ist.In this embodiment, as also in the embodiment according to claim 1, the closure member can be continuous or subdivided, with a continuous closure member being preferred in the embodiment according to claim 2.

Insbesondere, wenn unterteilte Verschlußorgane vorgesehen sind, aber auch bei durchgehenden Verschlußorganen, bewährt sich eine Ausführungsform der Erfindung, wonach ein Sensor vorgesehen ist, der die Höhe der zu trocknenden Glastafel erfaßt und der ein entsprechendes Signal an die Steuerung des Antriebes für die Verschlußorgane abgibt.In particular, when subdivided closure members are provided, but also with continuous closure members, an embodiment of the invention has proven itself, according to which a sensor is provided which detects the height of the glass sheet to be dried and which emits a corresponding signal to the control of the drive for the closure members.

Damit wird die Abmessung der Luftaustrittsöffnung automatisch an die Abmessung der zu trocknenden Glastafel angepaßt, so daß Luftverluste und unnütze Gebläseleistungen vermieden sind.So that the dimension of the air outlet opening is automatically adapted to the dimension of the glass sheet to be dried, so that air losses and unnecessary blower performance are avoided.

In einer Ausführungsform der erfindungsgemäßen Düse ist vorgesehen, daß der Antrieb die Verschlußorgane außerhalb der Düse angeordnet ist, mit einem Antriebsmotor, z.B. einem Druckmittelmotor, Diese Ausführungsform ist von Vorteil, da der Antriebsmotor für das Verschlußorgan die Ausführung der Düse als solche nicht beeinflußt, so daß diese nach wie vor hinsichtlich des Strömungsverhaltens der durch sie geleiteten und aus ihrer Luftaustrittsöffnung austretenden Luft optimiert werden kann.In one embodiment of the nozzle according to the invention it is provided that the drive of the closure members is arranged outside the nozzle, with a drive motor, e.g. a pressure medium motor, this embodiment is advantageous since the drive motor for the closure member does not influence the design of the nozzle as such, so that it can still be optimized with regard to the flow behavior of the air passed through it and emerging from its air outlet opening.

Die Erfindung erstreckt sich auch auf eine Ausführungsform bei der vorgesehen ist, daß die Geschwindigkeit der die Glastafel durch die Vorrichtung bewegenden Fördereinrichtung wenigstens im Bereich der Trocknungszone bei von den Verschlußorganen teilweise verschlossenen Luftausstrittsöffnungen gegenüber der Fördergeschwindigkeit bei vollständig geöffneten Luftaustrittsöffnungen erhöht ist.The invention also extends to an embodiment in which it is provided that the speed of the conveyor device moving the glass sheet through the device is increased, at least in the region of the drying zone, in the case of air outlet openings partially closed by the closure members, compared to the conveying speed when the air outlet openings are fully open.

In der Praxis lassen sich Steigerungen der Geschwindigkeit um bis zu 40% erreichen.In practice, speed increases of up to 40% can be achieved.

Wenn die Transportgeschwindigkeit der Glastafeln durch die Trocknungszone gesteigert wird, kann auch vorgesehen werden, daß bei von den Verschlußorganen teilweise verschlossenen Luftaustrittsöffnungen die Antriebsgeschindigkeit von in der Reinigungszone angeordneten Reinigungsbürsten, und gegebenenfalls auch die Mengen an zugeführter Reinigungsflüssigkeit und Spülflüssigkeit gegenüber den Mengen, die bei vollständig geöffneten Luftaustrittsöffnungen zugeführt werden, erhöht ist.If the speed of transport of the glass sheets through the drying zone is increased, it can also be provided that, in the case of air outlet openings partially closed by the closure members, the driving speed of cleaning brushes arranged in the cleaning zone, and possibly also the amounts of cleaning fluid and rinsing fluid supplied, compared to the amounts that are present when complete open air outlet openings are fed is increased.

Die Geschwindigkeitssteigerung, die bei der Verwendung der erfindungsgemäßen Düse in einer Reinigungsvorrichtung für Glastafeln vorgesehen sind, ist ohne Nachteil auf die Trockenwirkung möglich, wenn ein Gebläse vorgesehen ist, das gefilterte und gegebenenfalls getrocknete Luft zu den Düsen fördert, und dessen Förderleistung bei von den Verschlußorganen teilweise verschlossenen Luftaustrittsöffnungen unverändert ist.The increase in speed when using the nozzle according to the invention in a cleaning device are provided for glass panels, without any disadvantage to the drying effect, if a blower is provided which conveys filtered and possibly dried air to the nozzles, and the conveying capacity of which is unchanged when the air outlet openings are partially closed by the closure members.

Weitere Einzelheiten und Merkmale der Erfindung ergeben sich aus der nachstehenden Beschreibung der in der Zeichnung gezeigten Ausführungsform.Further details and features of the invention will become apparent from the following description of the embodiment shown in the drawing.

Es zeigt Fig. 1 weitgehend schematisiert und in Draufsicht eine Glastafelwaschmaschine mit Trocknungszone, Fig. 2 einen Schnitt längs der Linie II-II in Fig. 1 und Fig. 3 einen Schnitt längs der Linie III-III in Fig. 2.1 shows a largely schematic and top view of a glass sheet washing machine with a drying zone, FIG. 2 shows a section along the line II-II in FIG. 1, and FIG. 3 shows a section along the line III-III in FIG. 2.

Eine in den Fig. 1 und 2 gezeigte Vorrichtung 1 zum Reinigen und Trocknen von Glastafeln ist in eine Reinigungszone 2 und eine Trocknungszone 3 unterteilt. Die zu reinigenden und zu trocknenden Glastafeln werden in Richtung des Pfeiles 4 auf Rollen 5 einer Fördervorrichtung aufstehend durch die Vorrichtung 1 bewegt. Die Fördervorrichtung kann auch so wie dies in der EP-A-0174294 beschrieben und gezeigt ist, ausgebildet sein.A device 1 shown in FIGS. 1 and 2 for cleaning and drying glass sheets is divided into a cleaning zone 2 and a drying zone 3. The glass sheets to be cleaned and dried are moved in the direction of arrow 4 on rollers 5 of a conveying device, standing up through device 1. The conveyor device can also be designed as described and shown in EP-A-0174294.

In der Reinigungszone 2 sind im gezeigten Ausführungsbeispiel zwei Paare von Rundbürsten 6 und 7 dargestellt, die um im wesentlichen vertikale Achsen drehangetrieben sind. Den Rundbürsten 6 und 7 sind nicht gezeigte Düsen für die Zufuhr von Reinigungs- bzw. Spülflüssigkeit zugeordnet. An Stelle der Rundbürsten können auch Bandbürsten (vgl. EP-A-0204063) vorgesehen sein.In the exemplary embodiment shown, two pairs of round brushes 6 and 7 are shown in the cleaning zone 2, which are driven in rotation about essentially vertical axes. The round brushes 6 and 7 are assigned nozzles, not shown, for the supply of cleaning or rinsing liquid. Instead of the round brushes, band brushes (cf. EP-A-0204063) can also be provided.

Vor und hinter sowie zwischen den Rundbürsten 6 und 7 sind vertikale Walzen 8 vorgesehen, die drehangetrieben sind und den Transport der Glastafeln durch die Vorrichtung 1 unterstützen (diese Walzen können entfallen, wenn die Fördervorrichtung gemäß der EP-A-0174294 ausgebildet ist).Vertical rollers 8 are provided in front of and behind and between the round brushes 6 and 7, which are driven in rotation and support the transport of the glass sheets through the device 1 (these rollers can be omitted if the conveyor is designed according to EP-A-0174294).

Im Anschluß an die Reinigungszone 2 ist in der Vorrichtung 1 die Trocknungszone 3 vorgesehen, die zwei Düsen 10 aufweist, die sich zur Förderrichtung 4 schräg ausgerichtet, in einer zur Förderebene parallelen Ebene von unten nach oben erstrecken. Der von den Düsen 10 bestrichene Bereich beträgt in Höhenrichtung beispielsweise 3 m.Following the cleaning zone 2, the drying zone 3 is provided in the device 1, which has two nozzles 10, which are oriented obliquely to the conveying direction 4 and extend from bottom to top in a plane parallel to the conveying plane. The area swept by the nozzles 10 is, for example, 3 m in the height direction.

Jede Düse 10 des einander gegenüberliegend angeordneten Paares von Düsen 10 besitzt eine Luftaustrittsöffnung in Form eines Längsschlitzes 11, aus dem Luft, die den Düsen 10 von einem nicht gezeigten Gebläse über nicht gezeigte Leitungen zugeführt wird, schräg auf die zu trocknende Glastafel geblasen wird, wobei die Luftströmung entgegen der Bewegungsrichtung (Pfeil 4) schräg gestellt ist.Each nozzle 10 of the oppositely arranged pair of nozzles 10 has an air outlet opening in the form of a longitudinal slot 11, from which air, which is supplied to the nozzles 10 from a blower, not shown, via lines, not shown, is blown obliquely onto the glass sheet to be dried, whereby the air flow is inclined against the direction of movement (arrow 4).

Die Vorrichtung 1 besitzt ein Gehäuse 9, das die Reinigungszone 2 und die Trocknungszone 3 in sich aufnimmt. Die Ein- und Auslauföffnungen des Gehäuses 9 können wie ebenfalls in der EP-A-0174294 beschrieben ausgebildet sein. Sinngemäß kann zwischen Reinigungszone 2 und der Trocknungszone 3 der Vorrichtung 1 eine mit einem aus der EP-A-0174294 bekannten Abschlußorgan ausgestattete Zwischenwand vorgesehen sein.The device 1 has a housing 9 which houses the cleaning zone 2 and the drying zone 3. The inlet and outlet openings of the housing 9 can be designed as also described in EP-A-0174294. Analogously, between the cleaning zone 2 and the drying zone 3 of the device 1, an intermediate wall equipped with a closure member known from EP-A-0174294 can be provided.

Fig. 3 zeigt ein Verschlußorgan 12, das im Inneren der Düse 10 vorgesehen ist. Das Verschlußorgan 12 besitzt einen Verschlußkörper 13, der über eine Halterung 14 durch eine Schraubverbindung justierbar mit der Kolbenstange 15 eines Betätigungszylinders 16 verbunden ist, der außerhalb der Düse 10 angeordnet und mit dieser über einen Stutzen 17 verbunden ist.Fig. 3 shows a closure member 12 which is provided in the interior of the nozzle 10. The closure member 12 has a closure body 13 which is adjustably connected via a bracket 14 by a screw connection to the piston rod 15 of an actuating cylinder 16, which is arranged outside the nozzle 10 and connected to the latter via a nozzle 17.

Der Verschlußkörper 13 des Verschlußorganes 12 besteht aus elastisch nachgiebigem Werkstoff und kann beispielsweise aus Schaumgummi (Moosgummi) oder Schaumkunststoff bestehen oder auch durch einen elastisch nachgiebigen, unter Druck gesetzten Hohlkörper gebildet sein.The closure body 13 of the closure member 12 is made of resilient material and can be made of foam rubber (foam rubber) or foam plastic, for example exist or be formed by an elastically resilient, pressurized hollow body.

Durch Betätigung des Druckmittelzylinders 16 kann der Verschlußkörper 13 des Verschlußorganes 12 aus der in Fig. 3 gezeigten Wirkstellung, in der er die Luftaustrittsöffnung 11 der Düse 10 verschließt, in eine die Luftaustrittsöffnung 11 freigebende Ruhestellung zurückgezogen werden.By actuating the pressure medium cylinder 16, the closure body 13 of the closure member 12 can be withdrawn from the operative position shown in FIG. 3, in which it closes the air outlet opening 11 of the nozzle 10, into a rest position which releases the air outlet opening 11.

Es liegt im Rahmen der Erfindung, daß der Luftaustrittsöffnung 11 der Düse 10 mehrere unabhängig voneinander betätigbare Verschlußorgane 12 zugeordnet sind. Bevorzugt ist weiters, daß sich die Verschlußorgane 12 im oberen Bereich der Düse 10, d.h. in ihrem von der Fördervorrich ung 5 entfernten Bereich befinden.It is within the scope of the invention that the air outlet opening 11 of the nozzle 10 is assigned a plurality of closure elements 12 which can be actuated independently of one another. It is further preferred that the closure members 12 are located in the upper region of the nozzle 10, i.e. are located in their area distant from the conveyor 5.

Wenn ein Verschlußorgan 12 mit einem durchgehenden Verschlußkörper 13 vorgesehen ist (zu dessen Betätigung können auch mehrere Druckmittelzylinder 16 vorgesehen sein), so erstreckt sich dieses vorzugsweise über die obere Hälfte der Luftaustrittsöffnung 11, so daß Luft nur aus der unteren Hälfte der Düse 10 austreten kann, wenn sich das Verschlußorgan der unteren Hälfte der Düse 10 austreten kann, so daß nur die am häufigsten vorkommenden Glasformate (Höhe etwa 1,4 bis 1,5 m) zum Trocknen mit Luft bestrichen werden.If a closure member 12 is provided with a continuous closure body 13 (a plurality of pressure medium cylinders 16 can also be provided for its actuation), this preferably extends over the upper half of the air outlet opening 11, so that air can only escape from the lower half of the nozzle 10 , when the closure member of the lower half of the nozzle 10 can escape, so that only the most frequently occurring glass formats (height about 1.4 to 1.5 m) are coated with air to dry.

Wenn in der Düse 10 mehrere unabhängig voneinander betätigbare Verschlußorgane 12 vorgesehen sind, dann sind diese vorzugsweise so geschaltet, daß sich alle ober einem in seiner Wirkstellung befindlichen Verschlußorgan 12 angeordneten Verschlußorgane 12 ebenfalls in ihrer die Luftaustrittsöffnung 11 verschließenden Wirkstellung befinden. Auf diese Weise ist gewährleistet, daß oberhalb der zu trocknenden Glastafel aus der Düse 10 keine Luft ausströmt.If several independently operable closure members 12 are provided in the nozzle 10, then these are preferably switched so that all the closure members 12 arranged above a closure member 12 in its operative position are also in their operative position closing the air outlet opening 11. In this way it is ensured that no air flows out of the nozzle 10 above the glass sheet to be dried.

Um die Höhe der zu trocknenden Glastafel zu erfassen und die Verschlußorgane 12 oder das Verschlußorgan 12 entsprechend zu steuern, kann in der Vorrichtung ein auf die Oberkante einer Glastafel ansprechender Sensor 18 vorgesehen sein, der an einer Führung 19 auf- und abverschiebbar ist. Der Sensor 18 stellt sich entsprechend der Höhenlage der Oberkante der Glastafel ein und gibt ein seiner Position entsprechendes Signal an die Steuerung der Antriebszylinder 16 für die Verschlußorgane 12 ab, worauf alle im Bereich oberhalb der ermittelten Höhe befindlichen Verschlußorgane 12 geschlossen werden.In order to detect the height of the glass sheet to be dried and to control the closure members 12 or the closure member 12 accordingly, a sensor 18 which responds to the upper edge of a glass sheet and can be moved up and down on a guide 19 can be provided in the device. The sensor 18 adjusts itself according to the height of the upper edge of the glass sheet and emits a signal corresponding to its position to the control of the drive cylinder 16 for the closure members 12, whereupon all the closure members 12 located in the area above the determined height are closed.

Wenn die Luftaustrittsöffnungen 11 der erfindungsgemäßen Düsen 10 durch Vorstellen von Verschlußorganen 12 in ihrer Wirkstellung teilweise verschlossen sind, dann bewährt es sich, wenn die Leistung des Gebläses nicht zurückgenommen wird. Dadurch strömt in der Zeiteinheit mehr Luft durch den nicht verschlossenen Teil der Luftaustrittsöffnung 11 der Düse 10, so daß diese mit höherer Geschwindigkeit austritt und die Trockenwirkung verstärkt wird. Dies erlaubt es, eine Glastafel rascher durch die Trocknungszone 3 zu bewegen als bisher, wenn Luft ungenutzt aus über der Oberkante der Glastafel liegenden Bereichen der Luftaustrittsöffnungen 11 abströmt.If the air outlet openings 11 of the nozzles 10 according to the invention are partially closed in their operative position by introducing closure members 12, then it is useful if the performance of the blower is not reduced. As a result, more air flows through the unclosed part of the air outlet opening 11 of the nozzle 10 in the time unit, so that it emerges at a higher speed and the drying effect is increased. This makes it possible to move a glass sheet through the drying zone 3 more quickly than hitherto when air flows unused from regions of the air outlet openings 11 located above the upper edge of the glass sheet.

Die Erhöhung der Geschwindigkeit zur Bewegung der Glastafel in Richtung des Pfeiles 4 kann ebenfalls vom Sensor 18 in Abhängigkeit von der erfaßten Höhenlage gesteuert werden. Dabei sind Geschwindigkeitssteigerungen von bis zu 40% möglich, wenn die Luftaustrittsöffnungen der Düsen 10 zur Hälfte verschlossen sind.The increase in the speed for moving the glass sheet in the direction of arrow 4 can also be controlled by the sensor 18 as a function of the detected altitude. Speed increases of up to 40% are possible if the air outlet openings of the nozzles 10 are half closed.

Um die Leistungsfähigkeit der Reinigungszone 2 an die erhöhte Fördergeschwindigkeit im Bereich der Trocknungszone 3 anzupassen, kann die Fördergeschwindigkeit auch in diesem Bereich erhöht und beispielsweise die Drehzahl der Reinigungsbürsten 6 und 7 sowie der Fördereinrichtungen 5, 8 von den derzeit üblichen 12 m/sec im oben genannten Ausmaß erhöht werden.In order to adapt the performance of the cleaning zone 2 to the increased conveying speed in the area of the drying zone 3, the conveying speed can also be increased in this area and, for example, the speed of the cleaning brushes 6 and 7 and the conveying devices 5, 8 from the currently usual 12 m / sec in the above mentioned Extent to be increased.

Claims (8)

1. Device for cleaning and drying glass sheets, with a cleaning zone (2) and a drying zone (3), wherein the glass sheet to be cleaned is moved through the device by means of a conveyor device (5, 8) and wherein at least one pair of opposed nozzles (10) is provided in the drying zone (3), the nozzles extending if desired obliquely with respect to the direction of movement (4) of the glass sheet to be dried in a plane parallel to the plane of the glass sheet, the air outlet openings (11) of the nozzles facing the glass sheet and each being formed as a slot or a series of openings and having an air blowing direction which makes an acute angle with the glass sheet, characterized in that the air outlet opening (11) of each nozzle (10) has at least one closure member (12) associated therewith, which closes the air outlet opening (11) locally in its operative position, is arranged in the interior of the nozzle (10), preferably of cylindrical form, and comprises a preferably cylindrical closure body (13) adapted to be applied from the inside against the air outlet opening (11) of the nozzles (10) and to be controlled by means of an actuator (16).
2. Device according to claim 1, characterized in that the closure member (12) extends over half the length of the air outlet opening (11).
3. Device according to claim 1 or 2, characterized in that there is provided a sensor (18) which determines the heigh of the glass sheet to be dried and which delivers a corresponding signal to the control of the actuator (16) for the closure members (12).
4. Device according to one of claims 1 to 3, characterized in that the closure bodies (13) consist of elastically deformable material, e.g. foam rubber or plastics foam.
5. Device according to one of claims 1 to 4, characterized in that the actuator for the closure members (12) is arranged outside the nozzle (10).
6. Device according to one of claims 1 to 5, characterized in that the speed of the conveyor device (5, 8) moving the glass sheet through the device (1) is increased at least in the region of the drying zone (3) with air outlet openings (11) partially closed by the closure members (12), relative to the conveyor speed with the air outlet openings (11) fully open.
7. Device according to claim 6, characterized in that, with the air outlet openings (11) partially closed by the closure members (12), the drive speed of cleaning brushes (6, 7) arranged in the cleaning zone (2) is increased, as are also if desired the amounts of cleaning fluid and rinsing fluid supplied, relative to the amounts which are supplied with the air outlet openings (11) fully open.
8. Device according to claim 6 or 7, characterized in that there is provided an air blower, which supplies filtered and if desired dried air to the nozzles (10) and whose supply capacity is unchanged with the air outlet openings (11) partially closed by the closure members (12).
EP90890068A 1989-04-11 1990-03-09 Device for cleaning and drying of glass panels Expired - Lifetime EP0393008B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT853/89 1989-04-11
AT853/89A AT393237B (en) 1989-04-11 1989-04-11 NOZZLE FOR DRYING GLASS PANELS

Publications (3)

Publication Number Publication Date
EP0393008A2 EP0393008A2 (en) 1990-10-17
EP0393008A3 EP0393008A3 (en) 1990-11-28
EP0393008B1 true EP0393008B1 (en) 1992-01-22

Family

ID=3501303

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90890068A Expired - Lifetime EP0393008B1 (en) 1989-04-11 1990-03-09 Device for cleaning and drying of glass panels

Country Status (6)

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US (1) US5010619A (en)
EP (1) EP0393008B1 (en)
AT (2) AT393237B (en)
DE (3) DE59000036D1 (en)
DK (1) DK0393008T3 (en)
ES (1) ES2029145T3 (en)

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US6018842A (en) * 1997-08-13 2000-02-01 Billco Manufacturing, Inc. Glass washing machine
US6301930B1 (en) 1999-06-14 2001-10-16 Guardian Industries Corporation Apparatus for washing curved sheets of glass and corresponding method
US7232493B2 (en) * 2003-09-11 2007-06-19 Ged Integrated Solutions, Inc. Glass washing machine with conveyor and brush speed control
US9480282B2 (en) * 2013-07-31 2016-11-01 Evans Mactavish Agricraft, Inc. Feed device for linear airflow separator
US11383936B1 (en) * 2017-12-06 2022-07-12 Alliance Manufacturing, Inc. Automatic height adjusting manifold
CN110425863B (en) * 2019-09-03 2024-07-12 广东省华彩玻璃机械有限公司 High-efficiency energy-saving glass cleaning dryer

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US2671241A (en) * 1947-08-23 1954-03-09 Libbey Owens Ford Glass Co Glass drying apparatus
DE1283159B (en) * 1965-06-30 1968-11-14 Schilde Ag Slot nozzle for impact jet dryer
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DE3230247A1 (en) * 1982-08-13 1984-02-16 J. Wagner Gmbh, 7990 Friedrichshafen Adjustable nozzle arrangement
EP0174294B1 (en) * 1984-09-03 1991-03-06 Peter Lisec Glass plate cleaning device
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Also Published As

Publication number Publication date
US5010619A (en) 1991-04-30
DE59000036D1 (en) 1992-03-05
DE4009442A1 (en) 1990-10-25
ATA85389A (en) 1991-02-15
ES2029145T3 (en) 1992-07-16
EP0393008A2 (en) 1990-10-17
AT393237B (en) 1991-09-10
DE4009442C2 (en) 1992-06-25
ATE72035T1 (en) 1992-02-15
DK0393008T3 (en) 1992-03-23
DE9003437U1 (en) 1990-06-21
EP0393008A3 (en) 1990-11-28

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