EP1180550A2 - Oxygen lance - Google Patents

Oxygen lance Download PDF

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Publication number
EP1180550A2
EP1180550A2 EP01810781A EP01810781A EP1180550A2 EP 1180550 A2 EP1180550 A2 EP 1180550A2 EP 01810781 A EP01810781 A EP 01810781A EP 01810781 A EP01810781 A EP 01810781A EP 1180550 A2 EP1180550 A2 EP 1180550A2
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EP
European Patent Office
Prior art keywords
nozzle
annular gap
air supply
blow lance
compressed air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP01810781A
Other languages
German (de)
French (fr)
Inventor
Walter Schweizer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SCHWEIZER, WALTER
Original Assignee
Marwal-Technik Walter Schweizer
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Marwal-Technik Walter Schweizer filed Critical Marwal-Technik Walter Schweizer
Publication of EP1180550A2 publication Critical patent/EP1180550A2/en
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/16—Tuyéres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
    • B01F25/3121—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3131—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
    • B01F25/3141—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit with additional mixing means other than injector mixers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
    • B01F25/3143—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit characterised by the specific design of the injector
    • B01F25/31432—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit characterised by the specific design of the injector being a slit extending in the circumferential direction only
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F2025/91—Direction of flow or arrangement of feed and discharge openings
    • B01F2025/919—Direction of flow or arrangement of feed and discharge openings characterised by the disposition of the feed and discharge openings
    • B01F2025/9191—Direction of flow or arrangement of feed and discharge openings characterised by the disposition of the feed and discharge openings characterised by the arrangement of the feed openings for one or more flows, e.g. for the mainflow and the flow of an additional component
    • B01F2025/919125—Direction of flow or arrangement of feed and discharge openings characterised by the disposition of the feed and discharge openings characterised by the arrangement of the feed openings for one or more flows, e.g. for the mainflow and the flow of an additional component with feed openings in the center and at the circumference of the main flow
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4606—Lances or injectors

Definitions

  • the invention relates to a blowing lance according to the preamble of the independent Claim.
  • Air-operated nozzles are known as blowing lances, as they are widely used For example, to clean workpieces etc. using compressed air. You assign one Compressed air supply and a valve. When the valve is opened, compressed air flows due to a longer or shorter piece of pipe with a small diameter, which thus works as a nozzle. The free end of the nozzle is often specially shaped. This Blow lances have the disadvantage that the power comes from the air compressor is determined because it limits the maximum pressure and the maximum flow rate.
  • the object of the invention is to provide a blowing lance in which these disadvantages are overcome.
  • blowing lance can be used as well Suction lance, that is, for sucking in gaseous or liquid media and even of solid particles can be used.
  • Figure 1 shows a longitudinal section through the suction lance.
  • the blowing lance 1 has a lance body 11. At one end of the lance body is a suction port 7 available. Here suction elements such as a suction pipe etc. be connected.
  • the air intake A is also located here opposite end of the lance body 11 is the air outlet B, where the Air is blown out.
  • air inlet A air is drawn in from the environment.
  • the body of the lance reaches the sucked-in air from air inlet A into a vacuum chamber 2 with a somewhat enlarged cross section.
  • a nozzle tube 31 projects from one side here into it. The nozzle tube is bent and runs concentrically inside into one Narrowing the cross section in the direction of the air outlet B.
  • the nozzle tube 31 belongs to a venturi nozzle.
  • the open end of the nozzle tube 31 is approximately in Area of the point with the narrowest cross-section. At this point there is an annular gap nozzle 4 arranged. An acceleration space connects to the annular gap nozzle 4.
  • the Cross-section continuously expanded again to the air outlet B.
  • the air outlet B can be blowing elements such as a pipe, a blowing nozzle, a container, a filter or the like can be connected.
  • Annular gap nozzle 4 Compressed air is supplied from the outside to the annular gap nozzle 4. It consists of one Annular gap 41. Annular gap 41 has a rear wall which is perpendicular to Direction of air flow. In the direction of flow, i.e. towards the air outlet B, is the Annular gap slightly expanded. It has an area here at least once is angled. In the example shown, a first nozzle angle 42 determines one circumferential surface with an inclination of 60 ° with respect to the center line of the Lance body. This is followed by another with a second nozzle angle 43 circumferential surface with an inclination angle of about 30 °. This directed Expansion of the annular gap 41 of the annular gap nozzle 4 leaves the pressure here blown air already a higher at the entrance to the acceleration room Assume flow velocity.
  • the Venturi nozzle 3 and the annular gap nozzle 4 can with separate compressed air lines be fed. But you can also use both, as shown, on the same Compressed air line can be connected. It is crucial that the ratio of the Pressure in both nozzles is correct.
  • the cross section can be done in the simplest way a first compressed air supply line 61 to the nozzle tube 31 and the cross section of a second Compressed air supply line 62 to the annular gap 41 can be designed accordingly. It recommends at least one of the compressed air supply lines 61, 62 with a pressure control valve equip. It is then very easy to achieve the optimal flow by means of fine metering the blow lance.
  • blowing lance according to the invention permits many possible uses.
  • Some Examples include air cleaning guns, injectors, powder and dust conveyors, Filter feeding units, etc. called.
  • dust and liquid suction systems are built on the suction side, because the suction effect is comparable to the blowing effect.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)

Abstract

Lance for connecting to an air supply comprises an annular gap nozzle (41) and a Venturi nozzle (3) with an air inlet and a nozzle tube (31) arranged between an air inlet (A) and an air outlet (B). The nozzle tube and the annular gap nozzle are connected to an air supply under pressure. Preferred Features: A low pressure chamber is arranged between the air inlet and the Venturi nozzle. An acceleration chamber (5) is arranged between the annular gap nozzle and the air outlet. The nozzle tube extends up to the annular gap nozzle in the flow direction.

Description

Die Erfindung betrifft eine Blaslanze nach dem Oberbegriff des unabhängigen Patentanspruches.The invention relates to a blowing lance according to the preamble of the independent Claim.

Als Blaslanzen sind druckluftbetätigte Düsen bekannt, wie sie weit verbreitet sind, um beispielsweise Werkstücke usw. mittels Druckluft zu reinigen. Sie weisen eine Druckluftzufuhr und ein Ventil auf. Wenn das Ventil geöffnet wird, strömt Druckluft durch eine längeres oder kürzeres Rohrstück mit kleinem Durchmesser, welches somit als Düse funktioniert. Oft ist das freie Ende der Düse noch speziell geformt. Diese Blaslanzen weisen den Nachteil auf, dass die Leistung vom Druckluftkompressor her bestimmt ist, da dieser den maximalen Druck und die maximale Fördermenge begrenzt.Air-operated nozzles are known as blowing lances, as they are widely used For example, to clean workpieces etc. using compressed air. You assign one Compressed air supply and a valve. When the valve is opened, compressed air flows due to a longer or shorter piece of pipe with a small diameter, which thus works as a nozzle. The free end of the nozzle is often specially shaped. This Blow lances have the disadvantage that the power comes from the air compressor is determined because it limits the maximum pressure and the maximum flow rate.

Aufgabe der Erfindung ist es, eine Blaslanze zu schaffen, bei welcher diese Nachteile überwunden sind.The object of the invention is to provide a blowing lance in which these disadvantages are overcome.

Diese Aufgabe wird durch die in den Patentansprüchen angegebene Erfindung gelöst.This object is achieved by the invention specified in the patent claims.

Ein zusätzlicher Vorteil der Erfindung ist, dass die Blaslanze ebensogut auch als Sauglanze, das heisst, zum Ansaugen von gasförmigen oder flüssigen Medien und sogar von festen Partikeln eingesetzt werden kann.An additional advantage of the invention is that the blowing lance can be used as well Suction lance, that is, for sucking in gaseous or liquid media and even of solid particles can be used.

Die Erfindung wird nachstehend im Zusammenhang mit der Zeichnung beschrieben.The invention is described below in connection with the drawing.

Figur 1 zeigt einen Längsschnitt durch die Sauglanze. Figure 1 shows a longitudinal section through the suction lance.

Die Blaslanze 1 weist einen Lanzenkörper 11 auf. An einem Ende des Lanzenkörpers ist ein Sauganschluss 7 vorhanden. Hier können Saugelemente wie ein Saugrohr usw. angeschlossen werden. Hier befindet sich auch der Lufteinlass A. Am gegenüberliegenden Ende des Lanzenkörpers 11 befindet sich der Luftauslass B, wo die Luft ausgeblasen wird. Beim Lufteinlass A wird Luft aus der Umgebung angesogen. Im Lanzenköper gelangt die angesaugte Luft vom Lufteinlass A in einen Unterdruckraum 2 mit etwas vergrössertem Querschnitt. Hier ragt von einer Seite her ein Düsenrohr 31 hinein. Das Düsenrohr ist umgebogen und verläuft konzentrisch im Inneren in eine Verengung des Querschnittes in Richtung zum Luftauslass B. Das Düsenrohr 31 gehört zu einer Venturidüse. Das offene Ende des Düsenrohres 31 befindet sich etwa im Bereich der Stelle mit dem engsten Querschnitt. An dieser Stelle ist eine Ringspaltdüse 4 angeordnet. An die Ringspaltdüse 4 schliesst ein Beschleunigungsraum an. Hier wird der Querschnitt kontinuierlich wieder etwas erweitert bis zum Luftauslass B. Am Luftauslass B können Blaselemente wie ein Rohr, eine Blasdüse, ein Behälter, ein Filter oder dergleichen angeschlossen werden.The blowing lance 1 has a lance body 11. At one end of the lance body is a suction port 7 available. Here suction elements such as a suction pipe etc. be connected. The air intake A is also located here opposite end of the lance body 11 is the air outlet B, where the Air is blown out. At air inlet A, air is drawn in from the environment. in the The body of the lance reaches the sucked-in air from air inlet A into a vacuum chamber 2 with a somewhat enlarged cross section. A nozzle tube 31 projects from one side here into it. The nozzle tube is bent and runs concentrically inside into one Narrowing the cross section in the direction of the air outlet B. The nozzle tube 31 belongs to a venturi nozzle. The open end of the nozzle tube 31 is approximately in Area of the point with the narrowest cross-section. At this point there is an annular gap nozzle 4 arranged. An acceleration space connects to the annular gap nozzle 4. Here is the Cross-section continuously expanded again to the air outlet B. At the air outlet B can be blowing elements such as a pipe, a blowing nozzle, a container, a filter or the like can be connected.

Zur Ringspaltdüse 4 wird von aussen Druckluft zugeführt. Sie besteht aus einem Ringspalt 41. Der Ringspalt 41 weist eine Rückwand auf, welche senkrecht zur Strömungsrichtung der Luft ist. In Strömungsrichtung, also zum Luftauslass B hin, ist der Ringspalt etwas erweitert. Er weist hier ein Fläche auf, die mindestens einmal abgewinkelt ist. Im dargestellten Beispiel bestimmt ein erster Düsenwinkel 42 eine umlaufende Fläche mit einer Neigung von 60° gegenüber der Mittellinie des Lanzenkörpers. Daran schliesst mit einem zweiten Düsenwinkel 43 ein weitere umlaufende Fläche mit einem Neigungswinkel von etwa 30 ° an. Diese gerichtete Erweiterung des Ringspaltes 41 der Ringspaltdüse 4 lässt die hier unter Druck eingeblasene Luft bereits am Eingang zum Beschleunigungsraum eine höhere Strömungsgeschwindigkeit annehmen.Compressed air is supplied from the outside to the annular gap nozzle 4. It consists of one Annular gap 41. Annular gap 41 has a rear wall which is perpendicular to Direction of air flow. In the direction of flow, i.e. towards the air outlet B, is the Annular gap slightly expanded. It has an area here at least once is angled. In the example shown, a first nozzle angle 42 determines one circumferential surface with an inclination of 60 ° with respect to the center line of the Lance body. This is followed by another with a second nozzle angle 43 circumferential surface with an inclination angle of about 30 °. This directed Expansion of the annular gap 41 of the annular gap nozzle 4 leaves the pressure here blown air already a higher at the entrance to the acceleration room Assume flow velocity.

Die Venturidüse 3 und die Ringspaltdüse 4 können mit getrennten Druckluftleitungen gespeist werden. Sie können aber auch beide, wie dargestellt, an der gleichen Druckluftleitung angeschlossen werden. Entscheidend ist, dass das Verhältnis des Druckes in beiden Düsen richtig ist. Dazu kann auf einfachste Weise der Querschnitt einer ersten Druckluftzuleitung 61 zum Düsenrohr 31 und der Querschnitt einer zweiten Druckluftzuleitung 62 zum Ringspalt 41 entsprechend ausgelegt werden. Es empfiehlt sich mindestens eine der Druckluftzuleitungen 61, 62 mit einem Druckregelventil zu bestücken. Es ist dann sehr einfach, mittels Feindosierung die optimale Durchströmung der Blaslanze einzustellen.The Venturi nozzle 3 and the annular gap nozzle 4 can with separate compressed air lines be fed. But you can also use both, as shown, on the same Compressed air line can be connected. It is crucial that the ratio of the Pressure in both nozzles is correct. The cross section can be done in the simplest way a first compressed air supply line 61 to the nozzle tube 31 and the cross section of a second Compressed air supply line 62 to the annular gap 41 can be designed accordingly. It recommends at least one of the compressed air supply lines 61, 62 with a pressure control valve equip. It is then very easy to achieve the optimal flow by means of fine metering the blow lance.

Die Wirkungsweise ist nun folgende: Die durch das Düsenrohr 31 in den Venturi eingeblasene Druckluft reisst Umgebungsluft aus dem Unterdruckraum 2 nach. Dadurch wird auch Umgebungsluft über den Lufteinlass A angesaugt. Wie bekannt wird die Luftströmung in der Verengung des Venturis beschleunigt. Gleichzeitig wird am Ende des Venturis, also an der Stelle mit dem kleinsten Querschnitt zusätzlich Druckluft über den ganzen Querschnitt gleichmässig verteilt eingeblasen. Diese Luft wird sowohl durch die geneigten umlaufenden Flächen des Ringspaltes bereits in Strömungsrichtung vorbeschleunigt. Diese Zusatzluft bewirkt eine weitere Beschleunigung der Luftströmung durch die Sauglanze. Der Beschleunigungsraum 5 mit seinem sich langsam erweiternden Querschnitt verhindert einen allfälligen Rückstau und Bremseffekt in der Luftströmung. Der Saugeffekt, welcher durch den Venturi mit der Venturidüse am Lufteinlass erzeugt wird, wird somit durch den Beschleunigungseffekt erzeugt durch die Ringspaltdüse 4 vervielfacht. Ebenso natürlich der Blaseffekt am Luftauslass B.The mode of operation is now as follows: that through the nozzle tube 31 into the venturi injected compressed air carries ambient air out of the vacuum chamber 2. Thereby ambient air is also drawn in via air inlet A. How well known is the Air flow in the narrowing of the Venturi accelerates. At the same time, at the end of Venturis, i.e. at the point with the smallest cross section, additional compressed air over the injected evenly over the entire cross-section. This air is both through the inclined circumferential surfaces of the annular gap already in the direction of flow pre-accelerated. This additional air further accelerates the air flow through the suction lance. The acceleration space 5 with its slowly expanding Cross-section prevents any back pressure and braking effect in the air flow. The suction effect created by the venturi with the venturi nozzle at the air inlet is thus generated by the acceleration effect through the annular gap nozzle 4 multiplied. Likewise, of course, the blowing effect at air outlet B.

Die erfindungsgemässe Blaslanze lässt viele Anwendungsmöglichkeiten zu. Als einige Bespiele seien Luftreinigungspistolen, Injektoren, Pulver- und Staubförderanlagen, Filterbeschickungseinheiten usw. genannt. Ebenso können unter besonderer Benützung der Saugseite Staub- und Flüssigkeitssaugsysteme gebaut werden, denn der Saugeffekt ist vergleichbar mit dem Blaseffekt in seiner Wirkung.The blowing lance according to the invention permits many possible uses. As some Examples include air cleaning guns, injectors, powder and dust conveyors, Filter feeding units, etc. called. Likewise, with special use dust and liquid suction systems are built on the suction side, because the suction effect is comparable to the blowing effect.

Claims (10)

Blaslanze zum Anschluss mit einer Luftzufuhr unter Druck, dadurch gekennzeichnet, dass die Blaslanze einen Lufteinlass (A) und einen Luftauslass (B) aufweist, und dass zwischen dem Lufteinlass (A) und dem Luftauslass (B) eine Venturidüse (3) mit einem Lufteinlass und einem Düsenrohr (31) und eine Ringspaltdüse (4) mit einem Ringspalt (41) angeordnet sind, wobei das Düsenrohr (31) der Venturidüse (3) und die Ringspaltdüse (4) an der Luftzufuhr unter Druck angeschlossen sindBlow lance for connection with an air supply under pressure, characterized in that the blow lance has an air inlet (A) and an air outlet (B) and that between the air inlet (A) and the air outlet (B) a Venturi nozzle (3) with an air inlet and a nozzle tube (31) and an annular gap nozzle (4) with an annular gap (41) are arranged, the nozzle tube (31) of the Venturi nozzle (3) and the annular gap nozzle (4) being connected to the air supply under pressure Blaslanze nach Anspruch 1, dadurch gekennzeichnet, dass zwischen dem Lufteinlass (A) und der Venturidüse (3) ein Unterdruckraum vorhanden ist.Blow lance according to claim 1, characterized in that a vacuum space is present between the air inlet (A) and the Venturi nozzle (3). Blaslanze nach Anspruch 1, dadurch gekennzeichnet, dass zwischen Ringspaltdüse (4) und Luftauslass ein Beschleunigungsraum (5) vorhanden ist.Blow lance according to claim 1, characterized in that an acceleration space (5) is present between the annular gap nozzle (4) and the air outlet. Blaslanze nach Anspruch 1, dadurch gekennzeichnet, dass das Düsenrohr (31) der Venturidüse (3) in Strömungsrichtung mindestens bis zur Ringspaltdüse (4) reicht.Blow lance according to claim 1, characterized in that the nozzle tube (31) of the Venturi nozzle (3) extends in the flow direction at least to the annular gap nozzle (4). Blaslanze nach Anspruch 1, dadurch gekennzeichnet, dass die Ringspaltdüse (4) einen Ringspalt (41) mit einem ersten Düsenwinkel (42) und einem zweiten anschliessenden Düsenwinkel (43) aufweist.Blow lance according to claim 1, characterized in that the annular gap nozzle (4) has an annular gap (41) with a first nozzle angle (42) and a second subsequent nozzle angle (43). Blaslanze nach Anspruch 5, dadurch gekennzeichnet, dass die Venturidüse (3) eine erste Druckluftzufuhr (61) aufweist, und dass die Ringspaltdüse (4) eine zweite Druckluftzufuhr (62) aufweist.Blow lance according to claim 5, characterized in that the venturi nozzle (3) has a first compressed air supply (61) and that the annular gap nozzle (4) has a second compressed air supply (62). Blaslanze nach Anspruch 6, dadurch gekennzeichnet, dass der ersten Druckluftzufuhr (61) und der zweiten Druckluftzufuhr (62) getrennt Druckluft zuführbar ist.Blow lance according to claim 6, characterized in that the first compressed air supply (61) and the second compressed air supply (62) can be supplied separately with compressed air. Blaslanze nach Anspruch 6, dadurch gekennzeichnet, dass die erste Druckluftzufuhr (61) und die zweite Druckluftzufuhr (62) an einer gemeinsamen Luftzufuhr unter Druck (6) angeschlossen sind. Blow lance according to claim 6, characterized in that the first compressed air supply (61) and the second compressed air supply (62) are connected to a common air supply under pressure (6). Blaslanze nach Anspruch 1, dadurch gekennzeichnet, dass im Bereich der Luftzufuhr (A) ein Sauganschluss (7), zum Anschliessen von Saugelementen, und/oder im Bereich des Luftauslasses (B) ein Blasanschluss zum Anschliessen von Blaselementen, vorhanden ist.Blowing lance according to claim 1, characterized in that in the area of the air supply (A) there is a suction connection (7) for connecting suction elements, and / or in the area of the air outlet (B) there is a blowing connection for connecting blowing elements. Blaslanze nach Anspruch 6, dadurch gekennzeichnet, dass das Verhältnis des Druckes im Düsenrohr (31) und im Ringspalt (41) einstellbar ist.Blow lance according to claim 6, characterized in that the ratio of the pressure in the nozzle tube (31) and in the annular gap (41) is adjustable.
EP01810781A 2000-08-17 2001-08-14 Oxygen lance Withdrawn EP1180550A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH15892000 2000-08-17
CH15892000 2000-08-17

Publications (1)

Publication Number Publication Date
EP1180550A2 true EP1180550A2 (en) 2002-02-20

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EP01810781A Withdrawn EP1180550A2 (en) 2000-08-17 2001-08-14 Oxygen lance

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011101637A1 (en) * 2010-02-17 2011-08-25 Pursuit Dynamics Plc Apparatus and method for entraining fluids
EP3995715A1 (en) * 2020-11-10 2022-05-11 Akwel Device and depollutant system for recovering braking dust particles

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011101637A1 (en) * 2010-02-17 2011-08-25 Pursuit Dynamics Plc Apparatus and method for entraining fluids
CN102753256A (en) * 2010-02-17 2012-10-24 推进动力公司 Apparatus and method for entraining fluids
US9010379B2 (en) 2010-02-17 2015-04-21 Pursuit Marine Drive Limited Apparatus and method for entraining fluids
EP3995715A1 (en) * 2020-11-10 2022-05-11 Akwel Device and depollutant system for recovering braking dust particles
FR3116092A1 (en) * 2020-11-10 2022-05-13 Akwel Depolluting device and system for recovering brake dust particles.

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