EP0786311B1 - Process and apparatus for surface treatment, in particular for cleaning surfaces with CO2-dry ice granulate - Google Patents

Process and apparatus for surface treatment, in particular for cleaning surfaces with CO2-dry ice granulate Download PDF

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Publication number
EP0786311B1
EP0786311B1 EP96111531A EP96111531A EP0786311B1 EP 0786311 B1 EP0786311 B1 EP 0786311B1 EP 96111531 A EP96111531 A EP 96111531A EP 96111531 A EP96111531 A EP 96111531A EP 0786311 B1 EP0786311 B1 EP 0786311B1
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EP
European Patent Office
Prior art keywords
dry ice
jet
granulate
compressed air
pressure
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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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EP96111531A
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German (de)
French (fr)
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EP0786311A1 (en
Inventor
Birgit Papcke
Raphael Rotstein
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Individual
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Individual
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Priority claimed from DE19544906A external-priority patent/DE19544906A1/en
Priority claimed from DE19624652A external-priority patent/DE19624652A1/en
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Publication of EP0786311A1 publication Critical patent/EP0786311A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B24C7/0046—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier
    • B24C7/0069—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier with means for preventing clogging of the equipment or for preventing abrasive entering the airway
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts
    • B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B24C7/0046—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier
    • B24C7/0053—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier with control of feed parameters, e.g. feed rate of abrasive material or carrier

Definitions

  • the invention relates to a device for surface treatment according to the preamble of claim 1, in particular for cleaning surfaces with CO 2 dry ice granules in a CO 2 dry ice reservoir and at least one high-pressure-resistant hose line with a spray gun at its free end.
  • a generic device for surface treatment is known from EP-A-0 521 794.
  • This device has a mobile housing and has a CO 2 dry ice filling funnel into which CO 2 dry ice granules can be filled to form a supply.
  • a screw conveyor is provided at the mouth of the CO 2 dry ice hopper and is driven by a compressed air motor supplied with external compressed air.
  • a blasting gun is connected to the mobile housing via a supply hose, which has a compressed air line and a separate line for the supply of CO 2 dry ice granules.
  • the blasting agent line opens into the blasting gun in a chamber which can be placed under negative pressure by means of the compressed air line in order to suck in the CO 2 dry ice granulate conveyed by the screw conveyor via the line to the blasting gun and to be blasted onto the surface to be treated by means of the separate compressed air line.
  • a jet pressure regulator regulates the impact intensity of the CO 2 dry ice granulate.
  • the invention has for its object a device for Develop surface treatment so that the beam intensity can be dosed more specifically.
  • CO 2 dry ice granules pass through a dry ice granulate hose to a blasting gun in that a vacuum is generated on the blasting gun, which sucks in the carbonic acid (CO 2 ) dry ice granules from a supply of dry ice granules via a dry ice supply line to the blasting gun and by means of a separate compressed air line onto the surface to be treated.
  • a jet pressure regulator is used to regulate the impact intensity of the carbon dioxide (CO 2 ) dry ice granulate, the jet pressure preferably being adjustable from 3 to 20 bar.
  • the jet pressure is preferably regulated by changing it the air supply for compressed air formation, at the same time the supply of dry ice granules is changed.
  • the blasting pressure on the blasting gun and the delivery rate of the CO 2 dry ice granulate can also be adjusted by separate but working in a controllable manner dependent on each other.
  • the jet pressure or the jet amount can also be applied directly the blasting gun via an electrical potentiometer control or a pneumatic control with a separate line from the device to the Venturi nozzle gun.
  • the amount of CO 2 dry ice can preferably be regulated jointly from the operating handle of the blasting gun by simultaneously driving the air motor and the screw conveyor by means of the compressed air compressor, or the amount of compressed air and the CO 2 dry ice granulate can be regulated separately from the operating handle of the blasting gun using the screw conveyor .
  • solid carbonic acid (CO 2 ) in the form of highly compressed granules is filled as dry ice granules 2 into a double-walled, insulated dry ice filling funnel 1, which forms a supply 3 in the dry ice filling funnel 1 and on a side wall slope 44 under the effect of gravity, if necessary with a vibrating or knocking vibration by means of a knocker 10 or tapping on the dry ice filling funnel 1 at adjustable intervals to ensure that the dry ice granules 2 slide evenly.
  • the dry ice granules 2 pass through the mouth 9 of the dry ice filling funnel 1 into a screw conveyor 5, which is driven by a pneumatically operated air motor 16, so that the dry ice granules are conveyed through a blasting agent connection 57 into the dry ice granulate hose 6.
  • the air motor 16 simultaneously drives an agitator 4, which protects the CO 2 granules from clumping by its stirring movement.
  • the negative pressure generated in a chamber 17 of a blasting gun 11 sucks in the CO 2 granulate and is blasted by the compressed air fed in by a compressor through a nozzle 12 of the blasting gun 11 onto the surface to be treated.
  • a display panel 13 is attached to the front of the device, behind which there is a pneumatic control 45.
  • a delivery pressure regulator 18 allows a variation in the impact intensity of the CO 2 granulate in this area.
  • Another manometer 21 shows the dry ice granulate consumption per hour, which can also be varied by the delivery pressure regulator 22 in a range from 20 kg to 80 kg per hour. This effect is achieved by throttling the air supply to the air motor 16, which influences the rotation of the screw conveyor 5.
  • the desired aggressiveness of the granular CO 2 pellet jet is achieved by exchangeable air fingers 23-31 as well as associated jet nozzles or jet pipes 32-40.
  • the individual air fingers 23-31 differ in their air throughput capacity.
  • the regulators 14 and 15 can (FIG. 4) simple throttles his.
  • the controller 14 or 20 consists of one ball valve 20 to be actuated by means of hand screw 21, with which the air supply in order to be more economical Dry consumption can be regulated more evenly.
  • the controller 15 is shown schematically Connection hoses 15 'in the form of a valve with the Air motor 16 connected and controls this pneumatically.
  • the pressure gauge 19 shows the air jet pressure and that Manometer 18 the delivery pressure of the screw 5.
  • jet pressure trigger or regulator lever 45 With the jet pressure trigger or regulator lever 45 is over a pneumatic switch 46 with air inlet (47) and outlet 48 the delivery rate of the air motor 16 adjustable, and by means of a pivotable about an axis (50) Regulator lever 49, which is biased by a spring 51.
  • the regulator lever 45 is inside at its free end 52 a long slot 53 of a pawl 54 limited movably secured about a pivot axis 55 is pivotable and by means of a tension spring 56 in Secured position within the recess 60 of the Pistol grip 59 is held.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Nozzles (AREA)

Abstract

The surface cleaning process uses carbon dioxide dry ice granulate (2), which is passed through a hose (6) and a jet gun (11) on the end. The gun is subjected to negative pressure to suck the granulate from a store (3). A separate air pressure line is used to spray the dry ice granulate onto the surface being treated. A jet pressure regulator is used to regulate the impact intensity of the dry ice granulate. It provides a pressure range of 3 to 20 bars. The jet pressure can be regulated by altering the air input forming the pressure.

Description

Die Erfindung betrifft eine Vorrichtung zur Oberflächenbehandlung gemäß dem Oberbegriff des Patentanspruchs 1, insbesondere zur Reinigung von Oberflächen mit CO2-Trockeneisgranulat in einem CO2-Trockeneisreservoir und mindestens einer hochdruckfesten Schlauchleitung mit einer Spritzpistole an ihrem freien Ende.The invention relates to a device for surface treatment according to the preamble of claim 1, in particular for cleaning surfaces with CO 2 dry ice granules in a CO 2 dry ice reservoir and at least one high-pressure-resistant hose line with a spray gun at its free end.

Herkömmliche Geräte haben den wesentlichen Nachteil, daß ihre Bedienung dadurch erschwert ist, daß wegen des etwa 79°C kalten Trockeneises eine Dosierung der ausgestrahlten Trockeneismenge an der Strahlpistole, welche nur eine Ein- und Ausschaltung erlaubt, nicht möglich ist.Conventional devices have the major disadvantage that their Operation is difficult because of the approximately 79 ° C cold Dry ice is a dosage of the amount of dry ice emitted on the blasting gun, which only allows switching on and off, not possible.

Eine gattungsgemäße Vorrichtung zur Oberflächenbehandlung ist aus der EP-A-0 521 794 bekannt. Diese Vorrichtung hat ein mobiles Gehäuse und weist einen CO2-Trockeneiseinfülltrichter auf, in den CO2-Trockeneisgranulat zur Bildung eines Vorrats einfüllbar ist. Eine Förderschnecke ist an einer Mündung des CO2-Trockeneiseinfülltrichters vorgesehen und wird durch einen mit externer Druckluft gespeisten Druckluftmotor angetrieben. Eine Strahlpistole ist über einen Zufuhrschlauch an das mobile Gehäuse angeschlossen, der eine Druckluftleitung und eine gesonderte Leitung für die Zufuhr von CO2-Trockeneisgranulat aufweist. Die Strahlmittelleitung mündet in der Strahlpistole in einer Kammer, die mittels der Druckluftleitung unter Unterdruck setzbar ist, um das durch die Förderschnecke geförderte CO2-Trockeneisgranulat über die Leitung zur Strahlpistole anzusaugen und mittels der gesonderten Druckluftleitung auf die zu behandelnde Oberfläche aufzustrahlen. Ein Strahldruckregler regelt die Aufprallintensität des CO2-Trockeneisgranulats.A generic device for surface treatment is known from EP-A-0 521 794. This device has a mobile housing and has a CO 2 dry ice filling funnel into which CO 2 dry ice granules can be filled to form a supply. A screw conveyor is provided at the mouth of the CO 2 dry ice hopper and is driven by a compressed air motor supplied with external compressed air. A blasting gun is connected to the mobile housing via a supply hose, which has a compressed air line and a separate line for the supply of CO 2 dry ice granules. The blasting agent line opens into the blasting gun in a chamber which can be placed under negative pressure by means of the compressed air line in order to suck in the CO 2 dry ice granulate conveyed by the screw conveyor via the line to the blasting gun and to be blasted onto the surface to be treated by means of the separate compressed air line. A jet pressure regulator regulates the impact intensity of the CO 2 dry ice granulate.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zur Oberflächenbehandlung so weiterzubilden, daß die Strahlintensität gezielter dosiert werden kann.The invention has for its object a device for Develop surface treatment so that the beam intensity can be dosed more specifically.

Diese Aufgabe wird durch eine Vorrichtung zur Oberflächenbehandlung mit den Merkmalen des Patentanspruchs 1 gelöst.This task is accomplished by a surface treatment device solved with the features of claim 1.

Vorteilhafte Weiterbildungen sind in den abhängigen Patentansprüchen definiert.Advantageous further developments are in the dependent claims Are defined.

Erfindungsgemäß wird auf wirtschaftlich und konstruktiv einfache Weise nicht nur eine Verringerung des Trockeneisverbrauchs, sondern auch eine angepasste Strahlintensität erreicht.According to the invention is simple and economical Not only reduce dry ice consumption, but also achieved an adjusted beam intensity.

Bei der erfindungsgemäßen Vorrichtung zur Oberflächenbehandlung gelangt CO2-Trockeneisgranulat durch einen Trockeneisgranulat-Schlauch zu einer Strahlpistole, indem an der Strahlpistole ein Unterdruck erzeugt wird, der das Kohlensäure (CO2)-Trockeneisgranulat aus einem Vorrat an Trockeneisgranulat über eine Trockeneiszufuhrleitung zur Strahlpistole ansaugt und mittels einer gesonderten Druckluftleitung auf die zu behandelnde Oberfläche aufstrahlt. Ein Strahldruckregler wird zur Regelung der Aufprallintensität des Kohlensäure (CO2)-Trockeneisgranulats verwendet, wobei der Strahldruck vorzugsweise von 3 bis 20 bar regelbar ist.In the device for surface treatment according to the invention, CO 2 dry ice granules pass through a dry ice granulate hose to a blasting gun in that a vacuum is generated on the blasting gun, which sucks in the carbonic acid (CO 2 ) dry ice granules from a supply of dry ice granules via a dry ice supply line to the blasting gun and by means of a separate compressed air line onto the surface to be treated. A jet pressure regulator is used to regulate the impact intensity of the carbon dioxide (CO 2 ) dry ice granulate, the jet pressure preferably being adjustable from 3 to 20 bar.

Vorzugsweise erfolgt die Regelung des Strahldruck durch Veränderung der Luftzufuhr zur Druckluft-Bildung, wobei gleichzeitig die Zuführung des Trockeneisgranulats verändert wird.The jet pressure is preferably regulated by changing it the air supply for compressed air formation, at the same time the supply of dry ice granules is changed.

Auch kann der Strahldruck an der Strahlpistole und die Fördermenge des CO2-Trockeneisgranulats durch getrennte, jedoch in regelbarer Abhängigkeit voneinander arbeitende Regler eingestellt werden. The blasting pressure on the blasting gun and the delivery rate of the CO 2 dry ice granulate can also be adjusted by separate but working in a controllable manner dependent on each other.

Dabei kann der Strahldruck bzw. die Strahlmenge auch direkt an der Strahlpistole über eine elektrische Potentiometerregelung oder eine pneumatische Regelung mit jeweils gesonderter Leitung vom Gerät zur Venturidüsen-Pistole geregelt werden.The jet pressure or the jet amount can also be applied directly the blasting gun via an electrical potentiometer control or a pneumatic control with a separate line from the device to the Venturi nozzle gun.

Dabei kann bevorzugt die CO2-Trockeneismenge von dem Bedienungsgriff der Strahlpistole aus durch den gleichzeitigen Antrieb des Luftmotors und der Förderschnecke mittels des Druckluft kompressors gemeinsam regulierbar oder die Druckluftmenge und das CO2-Trockeneisgranulat mit der Förderschnecke von dem Bedienungsgriff der Strahlpistole aus getrennt regulierbar sein.The amount of CO 2 dry ice can preferably be regulated jointly from the operating handle of the blasting gun by simultaneously driving the air motor and the screw conveyor by means of the compressed air compressor, or the amount of compressed air and the CO 2 dry ice granulate can be regulated separately from the operating handle of the blasting gun using the screw conveyor .

Die Erfindung wird nachstehend anhand von Figuren 1-6 näher beschrieben. Es zeigt

  • Figur 1 eine schematische, funktionsoffene Darstellung der erfindungsgemäßen Vorrichtung,
  • Figur 2 und 3 Seiten- und Stirnansichten einer mobilen erfindungsgemäßen Anlage,
  • Figur 4 eine schematische funktionelle Darstellung der Strahlpistole,
  • Figur 5 eine gegenüber Fig. 4 mehr detailliert dargestellte Strahlpistole,
  • Figur 6 eine Draufsicht darauf,
  • Figur 7 eine Draufsicht auf die Bedienungstafel der erfindungsgemäßen Vorrichtung, aus der die Schaltfunktionen ersichtlich sind,
  • Figur 8 ein Pneumatik-Flußbild der erfindungsgemäßen Vorrichtung.
    • The invention is described below with reference to Figures 1-6. It shows
  • FIG. 1 shows a schematic, functionally open representation of the device according to the invention,
  • FIGS. 2 and 3 side and end views of a mobile system according to the invention,
  • FIG. 4 shows a schematic functional illustration of the blasting gun,
  • FIG. 5 shows a blasting gun shown in more detail than FIG. 4,
  • FIG. 6 is a top view of it,
  • FIG. 7 shows a top view of the control panel of the device according to the invention, from which the switching functions can be seen,
  • Figure 8 is a pneumatic flow diagram of the device according to the invention.

    • Gemäß Figur 1 wird feste Kohlensäure (CO2) in Form hochverdichteter Körnchen als Trockeneisgranulat 2 in einen doppelwandig isolierten Trockeneis-Einfüll-Trichter 1 eingefüllt, welches in dem Trockeneis-Einfüll-Trichter 1 einen Vorrat 3 bildet und auf einer Seitenwandschräge 44 unter Schwerkraftwirkung, gegebenenfalls unter einer Rüttel- oder Klopfvibration mittels eines Klopfers 10 bzw. Klopfen auf den Trockeneis-Einfüll-Trichter 1 in einstellbaren Zeitabständen ein gleichmäßiges Nachrutschen des Trockeneisgranulats 2 zu gewährleisten.According to FIG. 1, solid carbonic acid (CO 2 ) in the form of highly compressed granules is filled as dry ice granules 2 into a double-walled, insulated dry ice filling funnel 1, which forms a supply 3 in the dry ice filling funnel 1 and on a side wall slope 44 under the effect of gravity, if necessary with a vibrating or knocking vibration by means of a knocker 10 or tapping on the dry ice filling funnel 1 at adjustable intervals to ensure that the dry ice granules 2 slide evenly.

    Das Trockeneisgranulat 2 gelangt durch die Mündung 9 des Trockeneis-Einfüll-Trichters 1 in eine Förderschnecke 5, welche über einen pneumatisch betriebenen Luftmotor 16 angetrieben wird, so daß somit das Trockeneisgranulat durch einen Strahlmittelanschluß 57 in den Trockeneisgranulatschlauch 6 gefördert wird. Der Luftmotor 16 treibt gleichzeitig ein Rührwerk 4, welches die CO2-Körnchen durch seine Rührbewegung vor dem Verklumpen schützt.The dry ice granules 2 pass through the mouth 9 of the dry ice filling funnel 1 into a screw conveyor 5, which is driven by a pneumatically operated air motor 16, so that the dry ice granules are conveyed through a blasting agent connection 57 into the dry ice granulate hose 6. The air motor 16 simultaneously drives an agitator 4, which protects the CO 2 granules from clumping by its stirring movement.

    Der in einer Kammer 17 einer Strahlpistole 11 erzeugte Unterdruck saugt das CO2-Granulat an und wird durch die von einem Kompressor eingespeiste Druckluft durch eine Düse 12 der Strahlpistole 11 auf die zu behandelnde Oberfläche gestrahlt.The negative pressure generated in a chamber 17 of a blasting gun 11 sucks in the CO 2 granulate and is blasted by the compressed air fed in by a compressor through a nozzle 12 of the blasting gun 11 onto the surface to be treated.

    An der Vorderseite des Gerätes ist eine Anzeigetafel 13 angebracht, hinter der sich eine Pneumatiksteuerung 45 befindet. Auf der Anzeigetafel 13 (Fig. 7) befinden sich ein Manometer 19, welches den Strahldruck zwischen 3-20 bar anzeigt. Ein Förderdruckregler 18 läßt eine Variation der Aufprallintensität des CO2-Granulats in diesem Bereich zu. Ein weiteres Manometer 21 zeigt den Trockeneisgranulatverbrauch pro Stunde an, welcher sich ebenfalls durch den Förderdruckregler 22 in einem Bereich von 20 Kilogramm bis 80 Kilogramm pro Stunde variieren läßt. Dieser Effekt wird durch Drosselung der Luftzufuhr zum Luftmotor 16 erreicht, welcher die Umdrehung der Förderschnecke 5 beeinflußt. Die gewünschte Agressivität des körnigen CO2-Pelletstrahls wird durch austauschbare Luftfinger 23-31 sowie zugehörige Strahldüsen bzw. Strahlrohre 32-40 erzielt. Die einzelnen Luftfinger 23-31 unterscheiden sich jeweils in ihrer Luftdurchsatzkapazität.A display panel 13 is attached to the front of the device, behind which there is a pneumatic control 45. On the display panel 13 (Fig. 7) there is a manometer 19 which shows the jet pressure between 3-20 bar. A delivery pressure regulator 18 allows a variation in the impact intensity of the CO 2 granulate in this area. Another manometer 21 shows the dry ice granulate consumption per hour, which can also be varied by the delivery pressure regulator 22 in a range from 20 kg to 80 kg per hour. This effect is achieved by throttling the air supply to the air motor 16, which influences the rotation of the screw conveyor 5. The desired aggressiveness of the granular CO 2 pellet jet is achieved by exchangeable air fingers 23-31 as well as associated jet nozzles or jet pipes 32-40. The individual air fingers 23-31 differ in their air throughput capacity.

    Der Bediener hat die Möglichkeit sowohl am Gerät als auch an der Strahlpistole 11 Strahldruck und Fördermenge über zwei Regler 14-15 bzw. Manometer 18 und 19 (Figuren 4-7) zu verändern. Der entscheidende Vorteil, den diese Neuerung mit sich bringt, ist ein bedeutend geringerer Trockeneisverbrauch. Da der Bediener während des Strahlens der verschiedenen Oberflächen die notwendige Trockeneismenge sowie Druckluftmenge regulieren kann. Das bedeutet, daß man nur soviel Trockeneis verstrahlt, wie für die zu reinigende Fläche notwendig ist.The operator has the option both on the device and on the blasting gun 11 blasting pressure and flow rate over two regulators 14-15 or pressure gauges 18 and 19 (Figures 4-7) to change. The key benefit this Innovation is a much smaller one Dry ice consumption. Since the operator during the Blasting the various surfaces the necessary Can regulate the amount of dry ice and the amount of compressed air. The means that you only radiate as much dry ice as is necessary for the surface to be cleaned.

    Die Regler 14 und 15 können (Figur 4) einfache Drosseln sein.The regulators 14 and 15 can (FIG. 4) simple throttles his.

    Gemäß Figur 5 besteht der Regler 14 bzw. 20 in einem mittels Handschraube 21 zu betätigenden Kugelventil 20, mit dem die Luftzufuhr zwecks sparsameren Trockeneinsverbrauchs gleichmäßiger regelbar ist.According to FIG. 5, the controller 14 or 20 consists of one ball valve 20 to be actuated by means of hand screw 21, with which the air supply in order to be more economical Dry consumption can be regulated more evenly.

    Der Regler 15 ist mit schematisch dargestellten Verbindungsschläuchen 15' in Form eines Ventils mit dem Luftmotor 16 verbunden und regelt diesen pneumatisch. The controller 15 is shown schematically Connection hoses 15 'in the form of a valve with the Air motor 16 connected and controls this pneumatically.

    Das Manometer 19 zeigt den Luftstrahldruck an und das Manometer 18 den Förderdruck der Schnecke 5.The pressure gauge 19 shows the air jet pressure and that Manometer 18 the delivery pressure of the screw 5.

    Mit dem Strahldruckabzug bzw. Reglerhebel 45 ist über einen Pneumatikschalter 46 mit Luft-Ein-(47) und -Auslaß 48 die Förderleistung des Luftmotors 16 regelbar, und zwar mittels eines um eine Achse (50) schwenkbaren Reglerhebels 49, der mit einer Feder 51 vorgespannt ist.With the jet pressure trigger or regulator lever 45 is over a pneumatic switch 46 with air inlet (47) and outlet 48 the delivery rate of the air motor 16 adjustable, and by means of a pivotable about an axis (50) Regulator lever 49, which is biased by a spring 51.

    Der Reglerhebel 45 ist an seinem freien Ende 52 innerhalb eines Langschlitzes 53 einer Sperrklinke 54 begrenzt beweglich gesichert, welche um eine Schwenkachse 55 schwenkbar ist und mittels einer Zugfeder 56 in Sicherungsstellung innerhalb der Ausnehmung 60 des Pistolengriffs 59 gehalten wird.The regulator lever 45 is inside at its free end 52 a long slot 53 of a pawl 54 limited movably secured about a pivot axis 55 is pivotable and by means of a tension spring 56 in Secured position within the recess 60 of the Pistol grip 59 is held.

    Im übrigen sind die Mengenverhältnisse des Trockeneisverbrauchs und der Druckluft durch unterschiedliche Düsenmaße der Luftfinger 23-31 sowie der Strahldüsen bzw. Strahlrohre 32-40 einstellbar, welche zur Optimierung der Wirkung der Venturi-Saugdüse 58 jeweils aufeinander angepaßt sein müssen. Otherwise, the proportions of dry ice consumption and the compressed air by different Nozzle dimensions of the air fingers 23-31 and the jet nozzles or Beam tubes 32-40 adjustable, which to optimize the Effect of the Venturi suction nozzle 58 on each other must be adapted.

    BezugszeichenlisteReference list

    11
    Trockeneis-Einfüll-TrichterDry ice filling funnel
    22nd
    TrockeneisgranulatDry ice granules
    33rd
    Vorrat an TrockeneisgranulatStock of dry ice granules
    44th
    RührwerkAgitator
    55
    FörderschneckeAuger
    66
    Trockeneiszufuhrleitung/Trockeneisgranulat-SchlauchDry ice supply line / dry ice granulate hose
    77
    DruckluftleitungCompressed air line
    88th
    freies Ende Zufuhrschlauch (Zufuhrschlauch 6/7)free end of supply hose (Supply hose 6/7)
    99
    Mündung TrichterEstuary funnel
    1010th
    Klopfer/RüttlerKnocker / vibrator
    1111
    StrahlpistoleBlasting gun
    1212th
    Düse der StrahlpistoleNozzle of the blasting gun
    1313
    AnzeigetafelScoreboard
    1414
    Regler Trockeneisgranulat-ZufuhrRegulator for dry ice granules
    1515
    Regler Trockeneisgranulat-FördermengeController for dry ice granulate flow rate
    1616
    Luftmotor (pneumatisch betrieben)Air motor (pneumatically operated)
    1717th
    Kammerchamber
    1818th
    FörderdruckreglerDischarge pressure regulator
    1919th
    Manometermanometer
    2020th
    Einstellung FördermengeDelivery rate setting
    2121
    Meßgerät Trockeneisgranulat-Verbrauch /hMeasuring device dry ice granulate consumption / h
    2222
    FörderdruckreglerDischarge pressure regulator
    23-3123-31
    austauschbare Luftfingerinterchangeable air fingers
    32-4032-40
    der Größe des jeweiligen Luftfingers angepaßte Strahldüsen bzw. Strahlrohrethe size of the respective air finger adapted jet nozzles or jet pipes
    4242
    BedienungsgriffControl handle
    4343
    DruckluftkompressorAir compressor
    4444
    SeitenwandschrägeSide wall slope
    4545
    Strahldruck-Abzug bzw. ReglerhebelBlasting pressure trigger or regulator lever
    4646
    Pneumatikschalter Pneumatic switch
    4747
    LufteinlaßAir intake
    4848
    LuftauslaßAir outlet
    4949
    schwenkbarer Reglerhebelswiveling control lever
    5050
    Achseaxis
    5151
    Federfeather
    5252
    freies Endefree end
    5353
    LangschlitzLong slot
    5454
    SperrklinkePawl
    5555
    SchwenkachseSwivel axis
    5656
    ZugfederTension spring
    5757
    StrahlmittelanschlußAbrasive connection
    5858
    Venturi-SaugdüseVenturi suction nozzle
    5959
    PistolengriffPistol grip
    6060
    AusnehmungRecess

    Claims (10)

    1. Apparatus for surface treatment, comprising
      a CO2 dry ice hopper (1) into which is filled CO2 dry ice granulate for the purpose of establishing a stock (3);
      a worm conveyer (5) at one mouth (9) of the CO2 dry ice hopper (1);
      a motor (16) for driving the conveyer worm (5);
      a delivery hose (6, 7);
      a jet pistol (11) arranged at a free end (8) of the delivery hose (6, 7); and
      a mobile housing which is provided with a compressed air socket (43) by means of which the motor (16) is fed compressed air;
      and the delivery hose to the jet pistol (11) comprises both a compressed air line (7) and a separate hose (6), which is connected on the housing in a blasting agent socket (57) for delivery of CO2 dry ice granulate, which terminates at its free end at the jet pistol (11) in a chamber (17) which can be placed under negative pressure by means of compressed air line (7) in order to suck CO2 dry ice granulate, which has been conveyed by the conveyer worm (5), via the hose (6) to the jet pistol (11) and to blast the surface to be treated by means of the separate compressed air line (7); and
      a jet pressure regulator (18) controls the blast intensity of the CO2 dry ice granulate,
      characterised in that
      the CO2 dry ice hopper (1), the worm conveyer (5) and the motor (16) are accommodated in a housing to which the delivery hose (6, 7) is connected, that the CO2 dry ice granulate consumption can be set at a range between 20 and 80 kilogram per hour by means of a conveyer pressure regulator (22) which controls the compressed air delivery to the motor (16), and on the housing is provided a display panel (13) for displaying adjustable parameters of the compressed air control.
    2. Apparatus according to Claim 1, characterised in that the jet pressure can be regulated between 3 and 20 bar.
    3. Apparatus according to Claim 2, characterised in that the regulation of the jet pressure is achieved by changing the air supply for forming compressed air, and at the same time the CO2 dry ice granulate consumption can be altered.
    4. Apparatus according to one of the above claims, characterised in that the jet pressure at the jet pistol (11) and the CO2 dry ice granulate consumption are set by means of regulators which are separate but operative in dependence from each other.
    5. Apparatus according to one of the above claims, characterised in that the stock (3) of CO2 dry ice granulate in the dry ice hopper (1) arrives on a lateral wall slant (44) under the force of gravity and assisted by a beating mechanism (10), which operates at adjustable time intervals, in the worm conveyer (5).
    6. Apparatus according to one of the above claims, characterised in that the display panel (13) comprises a manometer (19) for indicating the jet pressure and a further manometer (19) for indicating the CO2 dry ice granulate consumption.
    7. Apparatus according to one of the above claims, characterised in that the jet pistol (11) comprises exchangeable air fingers (23 to 31) and thereto matched jet nozzles or jet hoses (32 to 40) for optimising the venturi suction effect in the chamber (17), by means of which the CO2 dry ice granulate consumption and the jet pressure are adjustable.
    8. Apparatus according to one of the above claims, characterised in that a stirring mechanism (4), which is driven by the motor (16), is arranged in the CO2 dry ice granulate hopper (1).
    9. Apparatus according to one of the above claims, characterised in that the jet pressure and the CO2 dry ice granulate consumption is controllable directly at the jet pistol (11) via an electric potentiometer control or a pneumatic control with a respective separate hose from the housing to the jet pistol (11).
    10. Apparatus according to Claim 9, characterised in that the CO2 dry ice granulate consumption is controlled independently from the jet pressure by an operating handle (42) of the jet pistol (11).
    EP96111531A 1995-10-30 1996-07-17 Process and apparatus for surface treatment, in particular for cleaning surfaces with CO2-dry ice granulate Expired - Lifetime EP0786311B1 (en)

    Applications Claiming Priority (6)

    Application Number Priority Date Filing Date Title
    DE19540458 1995-10-30
    DE19540458 1995-10-30
    DE19544906A DE19544906A1 (en) 1995-10-30 1995-12-01 Method for treating, especially cleaning, surfaces with solid carbon dioxide granules
    DE19544906 1995-12-01
    DE19624652A DE19624652A1 (en) 1995-10-30 1996-06-20 Process for surface treatment, in particular cleaning of surfaces with CO¶2¶ dry ice granules and a device for carrying out this process
    DE19624652 1996-06-20

    Publications (2)

    Publication Number Publication Date
    EP0786311A1 EP0786311A1 (en) 1997-07-30
    EP0786311B1 true EP0786311B1 (en) 2000-06-14

    Family

    ID=27215611

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP96111531A Expired - Lifetime EP0786311B1 (en) 1995-10-30 1996-07-17 Process and apparatus for surface treatment, in particular for cleaning surfaces with CO2-dry ice granulate

    Country Status (2)

    Country Link
    EP (1) EP0786311B1 (en)
    AT (1) ATE193853T1 (en)

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    DE19915619A1 (en) * 1999-04-07 2000-10-19 Multimatic Oberflaechentechnik Process for removing machining products from a machining process
    US7112120B2 (en) 2002-04-17 2006-09-26 Cold Jet Llc Feeder assembly for particle blast system
    US6524172B1 (en) 2000-09-08 2003-02-25 Cold Jet, Inc. Particle blast apparatus
    US6726549B2 (en) 2000-09-08 2004-04-27 Cold Jet, Inc. Particle blast apparatus
    AU756185B2 (en) * 2001-02-16 2003-01-09 Samsung Kwangju Electronics Co., Ltd. Apparatus for agitating ice cream in ice cream vending machine
    DE10261302C1 (en) * 2002-12-27 2003-11-20 Klaus Frohne Spray device using injector or ejector principle using spray gun with Laval spray jet for providing high energy spray beam containing spray medium mixed with pressurized air
    WO2006000274A1 (en) * 2004-06-24 2006-01-05 Jens Werner Kipp Device and method for feeding liquid carbon dioxide
    CN103056131B (en) * 2013-01-17 2015-06-24 广东电网公司电力科学研究院 Pneumatic dry ice spraying device with insulation characteristics for live working
    DE202013006953U1 (en) 2013-08-01 2013-08-26 Dis Drylce Systems Gmbh & Co. Kg Application nozzle for a blasting gun for applying dry ice
    KR20160074568A (en) 2013-10-22 2016-06-28 토소우 에스엠디, 인크 Optimized textured surfaces and methods of optimizing
    RU2729251C2 (en) 2015-06-25 2020-08-05 Общество с ограниченной ответственностью "ИРБИС ТЕХНОЛОГИИ" (ООО "ИРБИСТЕХ") Methods and apparatus for producing granular solid carbon dioxide (versions)
    SK288682B6 (en) 2015-08-29 2019-07-02 Ics Ice Cleaning Systems S. R. O. Reservoir of dry ice cleaning equipment for dry ice
    EP3254807B1 (en) 2016-06-07 2023-12-27 desisa GmbH Method and device for cleaning with a blasting device
    DE102019202220A1 (en) * 2019-02-19 2020-08-20 Robel Bahnbaumaschinen Gmbh Apparatus and method for manually treating a surface with dry ice
    CN114808832A (en) * 2022-03-15 2022-07-29 武汉理工大学 Rail fallen leaf pollutant cleaning device based on cold spray stripping technology

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    Also Published As

    Publication number Publication date
    EP0786311A1 (en) 1997-07-30
    ATE193853T1 (en) 2000-06-15

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