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EP0786311A1 - 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
EP0786311A1
EP0786311A1 EP96111531A EP96111531A EP0786311A1 EP 0786311 A1 EP0786311 A1 EP 0786311A1 EP 96111531 A EP96111531 A EP 96111531A EP 96111531 A EP96111531 A EP 96111531A EP 0786311 A1 EP0786311 A1 EP 0786311A1
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EP
European Patent Office
Prior art keywords
dry ice
blasting
compressed air
gun
blasting gun
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96111531A
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German (de)
French (fr)
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EP0786311B1 (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 method for surface treatment, in particular cleaning of surfaces with CO 2 dry ice granules and a device for performing this method with a dry ice cleaning device for surface treatment with CO 2 dry ice reservoir and at least one high-pressure-resistant hose line with a spray gun at its free end.
  • the object of the invention is to avoid these disadvantages of the prior art, in an economically and structurally simple manner, wherein not only a reduction in dry ice consumption, but also an adapted beam intensity is achieved.
  • the invention lies in a method for surface treatment of the type mentioned, with CO 2 dry ice granules through a dry ice granulate hose using a blasting gun, by generating a negative pressure on the blasting gun, which supplies the carbonic acid (CO 2 ) dry ice granules from a supply Dry ice granulate is sucked into the blasting gun via a dry ice supply line and blasted onto the surface to be treated by means of a separate compressed air line and in which a blasting pressure regulator is used to regulate the impact intensity of the carbon dioxide (CO 2 ) dry ice granulate, the blasting pressure preferably being adjustable from 3 to 20 bar.
  • the jet pressure is regulated by changing the air supply to form compressed air, the supply of the dry ice granules being changed at the same time.
  • 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 blasting pressure or the blasting quantity can also be regulated directly on the blasting gun using an electrical potentiometer control or a pneumatic control with a separate line from the device to the Venturi nozzle gun.
  • the invention in a device for carrying out the method according to the invention with a blasting gun arranged at the free end of a supply hose, a CO 2 dry ice filling funnel and a screw conveyor, at its mouth and an air motor operated with compressed air to drive it and a downstream agitator driven by it, the supply hose to the blasting gun having both a compressed air line and a separate line for the supply of CO 2 dry ice granules, which opens at its free end on the blasting gun into a chamber which is pressurized by means of the compressed air line , whose CO 2 dry ice granules sucked into it can be blasted from the blasting gun onto the surface to be treated or cleaned.
  • 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, optionally with a vibrating or tapping vibration by means of a knocker 10 or tapping on the dry ice filling funnel 1 in adjustable time intervals to ensure even slipping of the dry ice granules 2.
  • 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 means of 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 is the rotation of the Screw conveyor 5 is affected.
  • the desired aggressiveness of the granular CO 2 pellet jet is achieved by exchangeable air fingers 23-31 and associated jet nozzles or jet pipes 32-40.
  • the individual air fingers 23-31 differ in their air throughput capacity.
  • the operator has the option of changing the jet pressure and delivery rate both on the device and on the blasting gun 11 using two regulators 14-15 or pressure gauges 18 and 19 (FIGS. 4-7).
  • the decisive advantage that this innovation brings is a significantly lower dry ice consumption. Because the operator can regulate the required amount of dry ice and compressed air while blasting the various surfaces. This means that only as much dry ice is blasted as is necessary for the surface to be cleaned.
  • the regulators 14 and 15 can be simple throttles (FIG. 4).
  • the controller 14 or 20 consists of a ball valve 20 which can be actuated by means of the hand screw 21 and with which the air supply can be regulated more uniformly in order to save dry consumption.
  • the controller 15 is connected to the air motor 16 by means of schematically illustrated connecting hoses 15 'in the form of a valve and regulates it pneumatically.
  • the pressure gauge 19 shows the air jet pressure and the pressure gauge 18 shows the delivery pressure of the screw 5.
  • the delivery rate of the air motor 16 can be regulated via a pneumatic switch 46 with an air inlet (47) and outlet 48, specifically by means of a regulator lever 49 which can be pivoted about an axis (50) and which has a spring 51 is biased.
  • the regulator lever 45 is secured at its free end 52 within a long slot 53 of a pawl 54 with limited movement, which can be pivoted about a pivot axis 55 and is held in the securing position within the recess 60 of the pistol grip 59 by means of a tension spring 56.
  • the proportions of the dry ice consumption and the compressed air can be adjusted by different nozzle dimensions of the air fingers 23-31 and the jet nozzles or jet pipes 32-40, which must be adapted to one another in order to optimize the effect of the Venturi suction nozzle 58.

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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 ein Verfahren zur Oberflächenbehandlung, insbesondere Reinigung von Oberflächen mit CO2-Trockeneisgranulat und eine Vorrichtung zur Durchführung dieses Verfahrens mit einem Trockeneis-Reinigungsgerät zur Oberflächenbehandlung mit CO2-Trockeneisreservoir und mindestens einer hochdruckfesten Schlauchleitung mit einer Spritzpistole an ihrem freien Ende.The invention relates to a method for surface treatment, in particular cleaning of surfaces with CO 2 dry ice granules and a device for performing this method with a dry ice cleaning device for surface treatment with 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 made more difficult by the fact that because of the dry ice which is about 79 ° C. cold, metering of the amount of dry ice emitted at the blasting gun, which only allows switching on and off, is not possible.

Aufgabe der Erfindung ist es, diese Nachteile des Standes der Technik zu vermeiden, und zwar auf wirtschaftlich und konstruktiv einfache Weise, wobei nicht nur eine Verringerung des Trockeneisverbrauchs, sondern auch eine angepaßte Strahlintensität erreicht wird.The object of the invention is to avoid these disadvantages of the prior art, in an economically and structurally simple manner, wherein not only a reduction in dry ice consumption, but also an adapted beam intensity is achieved.

Demgemäß liegt die Erfindung in einem Verfahren zur Oberflächenbehandlung der eingangs genannten Art, mit CO2-Trockeneisgranulat durch einen Trockeneisgranulat-Schlauch mittels 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 und bei dem ein Strahldruckregler zur Regelung der Aufprallintensität des Kohlensäure(CO2)-Trockeneisgranulats verwendet wird, wobei der Strahldruck vorzugsweise von 3 bis 20 bar regelbar ist.Accordingly, the invention lies in a method for surface treatment of the type mentioned, with CO 2 dry ice granules through a dry ice granulate hose using a blasting gun, by generating a negative pressure on the blasting gun, which supplies the carbonic acid (CO 2 ) dry ice granules from a supply Dry ice granulate is sucked into the blasting gun via a dry ice supply line and blasted onto the surface to be treated by means of a separate compressed air line and in which a blasting pressure regulator is used to regulate the impact intensity of the carbon dioxide (CO 2 ) dry ice granulate, the blasting pressure preferably being adjustable from 3 to 20 bar.

Bei einer anderen Ausführungsform der Erfindung erfolgt die Regelung des Strahldrucks durch Veränderung der Luftzufuhr zur Druckluft-Bildung, wobei gleichzeitig die Zuführung des Trockeneisgranulats verändert wird.In another embodiment of the invention, the jet pressure is regulated by changing the air supply to form compressed air, the supply of the dry ice granules being changed at the same time.

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 blasting pressure or the blasting quantity can also be regulated directly on the blasting gun using an electrical potentiometer control or a pneumatic control with a separate line from the device to the Venturi nozzle gun.

Wichtig ist die Ausbildung der Erfindung in einer Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens mit einer am freien Ende eines Zufuhrschlauchs angeordneten Strahlpistole, einem CO2-Trockeneis-Einfüll-Trichter und einer Förderschnecke, an dessen Mündung sowie einem mit Druckluft betriebenen Luftmotor zu deren Antrieb und einem davon angetriebenen nachgeschalteten Rührwerk, wobei der Zufuhrschlauch zur Strahlpistole sowohl eine Druckluftleitung als auch eine gesonderte Leitung für die Zufuhr von CO2-Trockeneisgranulat aufweist, welche an ihrem freien Ende an der Strahlpistole in eine Kammer mündet, die mittels der Druckluftleitung unter Unterdruck gesetzt wird, dessen dahin angesaugtes CO2-Trockeneisgranulat aus der Strahlpistole auf die zu behandelnde bzw. zu reinigende Oberfläche ausstrahlbar ist.It is important to form the invention in a device for carrying out the method according to the invention with a blasting gun arranged at the free end of a supply hose, a CO 2 dry ice filling funnel and a screw conveyor, at its mouth and an air motor operated with compressed air to drive it and a downstream agitator driven by it, the supply hose to the blasting gun having both a compressed air line and a separate line for the supply of CO 2 dry ice granules, which opens at its free end on the blasting gun into a chamber which is pressurized by means of the compressed air line , whose CO 2 dry ice granules sucked into it can be blasted from the blasting gun onto the surface to be treated or cleaned.

Dabei kann bevorzugt die CO2-Trockeneismenge von dem Bedienungsgriff der Strahlpistole aus durch den gleichzeitigen Antrieb des Luftmotors und der Förderschnecke mittels des Druckluftkompressors 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.

Weitere Verbesserungen der Erfindung ergeben sich aus den Merkmalen der Ansprüche 9 bis 11.Further improvements of the invention result from the features of claims 9 to 11.

Die Erfindung wird nachstehend anhand von Figuren 1-8 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 1-8. 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 shows 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, optionally with a vibrating or tapping vibration by means of a knocker 10 or tapping on the dry ice filling funnel 1 in adjustable time intervals to ensure even slipping of the dry ice granules 2.

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 means of 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 is the rotation of the Screw conveyor 5 is affected. The desired aggressiveness of the granular CO 2 pellet jet is achieved by exchangeable air fingers 23-31 and 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 of changing the jet pressure and delivery rate both on the device and on the blasting gun 11 using two regulators 14-15 or pressure gauges 18 and 19 (FIGS. 4-7). The decisive advantage that this innovation brings is a significantly lower dry ice consumption. Because the operator can regulate the required amount of dry ice and compressed air while blasting the various surfaces. This means that only as much dry ice is blasted 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 be simple throttles (FIG. 4).

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 a ball valve 20 which can be actuated by means of the hand screw 21 and with which the air supply can be regulated more uniformly in order to save dry consumption.

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 connected to the air motor 16 by means of schematically illustrated connecting hoses 15 'in the form of a valve and regulates it 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 the pressure gauge 18 shows 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, the delivery rate of the air motor 16 can be regulated via a pneumatic switch 46 with an air inlet (47) and outlet 48, specifically by means of a regulator lever 49 which can be pivoted about an axis (50) and which has a spring 51 is biased.

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 secured at its free end 52 within a long slot 53 of a pawl 54 with limited movement, which can be pivoted about a pivot axis 55 and is held in the securing position within the recess 60 of the pistol grip 59 by means of a tension spring 56.

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.Moreover, the proportions of the dry ice consumption and the compressed air can be adjusted by different nozzle dimensions of the air fingers 23-31 and the jet nozzles or jet pipes 32-40, which must be adapted to one another in order to optimize the effect of the Venturi suction nozzle 58.

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. Strahlrohrejet nozzles or jet pipes adapted to the size of the respective air finger
4242
BedienungsgriffControl handle
4343
DruckluftkompressorAir compressor
4444
SeitenwandschrägeSide wall slope
4545
Strahldruck-Abzug bzw. ReglerhebelBlasting pressure trigger or regulator lever
4646
PneumatikschalterPneumatic 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 (11)

Verfahren zur Oberflächenbehandlung, insbesondere zur Reinigung von Oberflächen mit CO2-Trockeneisgranulat durch einen Trockeneisgranulat-Schlauch mittels einer an dessen freiem Ende vorgesehene 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, bei dem ein Strahldruckregler zur Regelung der Aufprallintensität des Kohlensäure(CO2)-Trockeneisgranulats verwendet wird.Process for surface treatment, in particular for cleaning surfaces with CO 2 dry ice granules through a dry ice granulate hose by means of a blasting gun provided at its free end, by generating a negative pressure on the blasting gun which supplies the carbonic acid (CO 2 ) dry ice granules from a supply Dry ice granulate is sucked into the blasting gun via a dry ice supply line and blasted onto the surface to be treated by means of a separate compressed air line, in which a blasting pressure regulator is used to regulate the impact intensity of the carbon dioxide (CO 2 ) dry ice granulate. Verfahren nach Anspruch 1, bei dem der Strahldruck von 3 bis 20 bar regelbar ist.The method of claim 1, wherein the jet pressure is adjustable from 3 to 20 bar. Verfahren nach Anspruch 2, bei dem die Regelung des Strahldrucks durch Veränderung der Luftzufuhr zur Druckluft-Bildung erfolgt, wobei gleichzeitig die Zuführung des Trockeneisgranulats verändert wird.Method according to Claim 2, in which the regulation of the jet pressure takes place by changing the air supply for the formation of compressed air, the supply of the dry ice granules being changed at the same time. Verfahren nach einem der vorhergehenden Ansprüche, bei dem der Strahldruck an der Strahlpistole und die Fördermenge des CO2-Trockeneisgranulats durch getrennte, jedoch in Abhängigkeit voneinander arbeitende Regler eingestellt werden.Method according to one of the preceding claims, in which the blasting pressure on the blasting gun and the delivery rate of the CO 2 dry ice granulate are set by separate but interdependent regulators. Verfahren nach einem der Ansprüche 1-4, bei dem der Strahldruck bzw. die Strahlmenge direkt an der Strahlpistole über eine elektrische Potentiometerregelung oder eine pneumatische Regelung mit jeweils gesonderter Leitung vom Gerät zur Venturidüsen-Pistole geregelt wird.Method according to one of claims 1-4, in which the blasting pressure or the blasting quantity is regulated directly at the blasting gun via an electrical potentiometer control or a pneumatic control with a separate line from the device to the Venturi nozzle gun. Vorrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 1-5, mit einer am freien Ende (8) eines Zufuhrschlauchs angeordneten Strahlpistole (11), einem CO2-Trockeneis-Einfüll-Trichter (1) und einer Förderschnecke (5), an dessen Mündung (9) sowie einem mit Druckluft betriebenen Luftmotor (16) zu deren Antrieb und einem davon angetriebenen nachgeschalteten Rührwerk (4), wobei der Zufuhrschlauch zur Strahlpistole sowohl eine Druckluftleitung (7) als auch eine gesonderte Leitung (6) für die Zufuhr von CO2-Trockeneisgranulat aufweist, welche an ihrem freien Ende (8) an der Strahlpistole (11) in eine Kammer (17) mündet, die mittels der Druckluftleitung unter Unterdruck gesetzt wird, dessen dahin angesaugtes CO2-Trockeneisgranulat aus der Strahlpistole auf die zu behandelnde bzw. zu reinigende Oberfläche ausstrahlbar ist.Device for carrying out the method according to one of claims 1-5, with a blasting gun (11) arranged at the free end (8) of a supply hose, a CO 2 dry ice filling funnel (1) and a conveyor screw (5), on the latter Mouth (9) and an air motor (16) operated with compressed air to drive it and a downstream agitator (4) driven by it, the supply hose to the blasting gun comprising both a compressed air line (7) and a separate line (6) for the supply of CO 2 dry ice granules, which opens at their free end (8) on the blasting gun (11) into a chamber (17), which is pressurized by means of the compressed air line, the CO 2 dry ice granules sucked into it from the blasting gun onto the one to be treated or surface to be cleaned can be emitted. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die CO2-Trockeneismenge von dem Bedienungsgriff (42) der Strahlpistole (11) aus durch den gleichzeitigen Antrieb des Luftmotors (16) und der Förderschnecke (5) mittels des Druckluftkompressors (43) gemeinsam regulierbar ist.Apparatus according to claim 6, characterized in that the amount of CO 2 dry ice can be regulated jointly from the operating handle (42) of the jet gun (11) by simultaneously driving the air motor (16) and the screw conveyor (5) by means of the compressed air compressor (43) . Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die Druckluftmenge und das CO2-Trockeneisgranulat (2) mit der Förderschnecke (5) von dem Bedienungsgriff (42) der Strahlpistole (11) aus getrennt regulierbar sind.Apparatus according to claim 6, characterized in that the amount of compressed air and the CO 2 dry ice granulate (2) can be regulated separately with the screw conveyor (5) from the operating handle (42) of the blasting gun (11). Vorrichtung nach einem der Ansprüche 6-8, dadurch gekennzeichnet, daß der Förderschnecke (5) ein druckluftangetriebenes Rührwerk (4) nachgeschaltet ist.Device according to one of claims 6-8, characterized in that the screw conveyor (5) is followed by an agitator (4) driven by compressed air. Vorrichtung nach einem der Ansprüche 6-9, dadurch gekennzeichnet, daß nach der Förderschnecke (5) eine Rütteleinrichtung vorgesehen ist.Device according to one of claims 6-9, characterized in that a vibrating device is provided after the screw conveyor (5). Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß ein Rüttel- bzw. Klopfwerk (10) als Rütteleinrichtung vorgesehen ist.Apparatus according to claim 10, characterized in that a vibrating or tapping mechanism (10) is provided as the vibrating device.
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

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EP1044762A2 (en) * 1999-04-07 2000-10-18 MULTIMATIC Oberflächentechnik GmbH & Co. Method for removing the chips from a chip-producing machining process
WO2002020217A1 (en) * 2000-09-08 2002-03-14 Cold Jet, Inc. Particle blast apparatus
EP1232693A2 (en) * 2001-02-16 2002-08-21 Samsung Kwangju Electronics Co., Ltd. Apparatus for agitating ice cream in a ice cream vending machine
US6726549B2 (en) 2000-09-08 2004-04-27 Cold Jet, Inc. Particle blast apparatus
WO2004060612A1 (en) * 2002-12-27 2004-07-22 Klaus Frohne Shot blasting device
WO2006000274A1 (en) * 2004-06-24 2006-01-05 Jens Werner Kipp Device and method for feeding liquid carbon dioxide
US7112120B2 (en) 2002-04-17 2006-09-26 Cold Jet Llc Feeder assembly for particle blast system
CN103056131A (en) * 2013-01-17 2013-04-24 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
EP3254807A1 (en) 2016-06-07 2017-12-13 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
US10792788B2 (en) 2013-10-22 2020-10-06 Tosoh Smd, Inc. Optimized textured surfaces and methods of optimizing
US10888972B2 (en) 2015-08-29 2021-01-12 Ics Ice Cleaning Systems S.R.O. Dry ice container for dry ice cleaning devices
US11001500B2 (en) 2015-06-25 2021-05-11 Irbis Technology LLC Method, apparatus and system for producing granulated solid carbon dioxide
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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EP1044762A3 (en) * 1999-04-07 2002-09-04 MULTIMATIC Oberflächentechnik GmbH & Co. Method for removing the chips from a chip-producing machining process
EP1044762A2 (en) * 1999-04-07 2000-10-18 MULTIMATIC Oberflächentechnik GmbH & Co. Method for removing the chips from a chip-producing machining process
US6726549B2 (en) 2000-09-08 2004-04-27 Cold Jet, Inc. Particle blast apparatus
WO2002020217A1 (en) * 2000-09-08 2002-03-14 Cold Jet, Inc. Particle blast apparatus
US7950984B2 (en) 2000-09-08 2011-05-31 Cold Jet, Inc. Particle blast apparatus
US6524172B1 (en) 2000-09-08 2003-02-25 Cold Jet, Inc. Particle blast apparatus
EP1232693A3 (en) * 2001-02-16 2003-08-06 Samsung Kwangju Electronics Co., Ltd. Apparatus for agitating ice cream in a ice cream vending machine
EP1232693A2 (en) * 2001-02-16 2002-08-21 Samsung Kwangju Electronics Co., Ltd. Apparatus for agitating ice cream in a ice cream vending machine
US7112120B2 (en) 2002-04-17 2006-09-26 Cold Jet Llc Feeder assembly for particle blast system
WO2004060612A1 (en) * 2002-12-27 2004-07-22 Klaus Frohne Shot blasting device
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
CN103056131A (en) * 2013-01-17 2013-04-24 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
US10792788B2 (en) 2013-10-22 2020-10-06 Tosoh Smd, Inc. Optimized textured surfaces and methods of optimizing
US11001500B2 (en) 2015-06-25 2021-05-11 Irbis Technology LLC Method, apparatus and system for producing granulated solid carbon dioxide
US10888972B2 (en) 2015-08-29 2021-01-12 Ics Ice Cleaning Systems S.R.O. Dry ice container for dry ice cleaning devices
EP3254807A1 (en) 2016-06-07 2017-12-13 desisa GmbH Method and device for cleaning with a blasting device
EP4316734A2 (en) 2016-06-07 2024-02-07 desisa GmbH Device and method 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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