EP0216034B1 - Tuyère rotative - Google Patents

Tuyère rotative Download PDF

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Publication number
EP0216034B1
EP0216034B1 EP86108987A EP86108987A EP0216034B1 EP 0216034 B1 EP0216034 B1 EP 0216034B1 EP 86108987 A EP86108987 A EP 86108987A EP 86108987 A EP86108987 A EP 86108987A EP 0216034 B1 EP0216034 B1 EP 0216034B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
rotational body
rotatable
rotatable nozzle
jacket
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP86108987A
Other languages
German (de)
English (en)
Other versions
EP0216034A1 (fr
Inventor
Josef Kränzle
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0216034A1 publication Critical patent/EP0216034A1/fr
Application granted granted Critical
Publication of EP0216034B1 publication Critical patent/EP0216034B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/003—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with braking means, e.g. friction rings designed to provide a substantially constant revolution speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/04—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet
    • B05B3/06—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet by jet reaction, i.e. creating a spinning torque due to a tangential component of the jet

Definitions

  • the invention relates to a rotary nozzle according to the preamble of patent claim 1.
  • Such a rotary nozzle has become known from DE-A 3 233 274, which discloses a high-pressure jet device for treating surfaces, in which the rotary nozzle is held at a distance from the surface to be treated in a mobile housing that is open toward the surface to be treated.
  • a rotary body for rotation about a central axis is mounted on a central bearing and feed element, on which at least one nozzle element is attached, pointing towards the outlet region of the rotary nozzle, the axis of which is offset both in relation to the central axis and in the direction of rotation.
  • the angle between the central axis and the spray jet of the nozzle element is relatively large, approximately 45 ° . The aim is to cover the largest possible area.
  • DE-A 13 419 964 describes a rotary nozzle that can be attached to the jet pipe of a high-pressure cleaning device.
  • the rotary nozzle is constructed like a turbine and has a nozzle body which is accommodated in a cylindrical bearing and feed element and in which a nozzle element is formed pointing towards the outlet region of the rotary nozzle, the longitudinal axis of which is inclined with respect to the axis of rotation of the nozzle body, the outlet opening of the nozzle bore being approximately in the axis of rotation of the nozzle body ends.
  • the angle of inclination of the nozzle bore with respect to the axis of rotation is relatively acute, so that a relatively small area can be concentrated by means of a point jet.
  • the known rotary nozzle is of extremely complicated construction with a large number of parts which are complex to produce.
  • a fluid, eddy current or centrifugal brake can be provided to limit the speed of the turbine rotor.
  • These are, in particular, vane-shaped brake elements formed on the turbine rotor itself and brake elements which prevent the rotation of the cleaning fluid about the axis of rotation of the turbine rotor and which are opposite the brake elements at a short distance. With such a design, braking takes place only at a very high speed. There is also no possibility of varying the braking means in order to be able to determine the desired maximum speed at different pressures.
  • DE-A 2 237 021 describes a device for atomizing liquids, in which nozzles are arranged in a cylindrical rotating body parallel to the axis of rotation, the outlet area of which is surrounded by a cup-like shell which is either attached to the rotating body or opposite it at different speeds or Direction of rotation rotates.
  • the invention has for its object to provide a rotary nozzle with a simple structure, excellent cleaning effect and practically maintenance-free operation.
  • the brake means acting between the rotating body and the casing ensures that even at high pressure the speed does not increase in such a way that the omnidirectional jet resulting from the rotation of the point jet is not atomized due to the air resistance and the centrifugal force and is therefore ineffective.
  • the jacket also ensures that the leakage water occurring in the sealless rotary nozzle is incorporated into the spray jet.
  • the braking means can be easily verified, so that any desired speed can be set with very different pressures.
  • the rotary nozzle according to the invention is made up of very few parts.
  • 1 shows a central element 10 for connection to a conventional spray lance, via which valve-controlled liquid, in particular water, is fed at high pressure, for example from a high-pressure pump.
  • a cup 12 is placed on the central element 10, in which a rotating body 14 can rotate about a central axis 16 of the rotary nozzle.
  • a threaded connection 18 of the central element 10 opens into a central bore 20 which extends approximately to the middle of a pin-shaped extension 22 of the central element 10.
  • a threaded bore is provided, into which a screw 24 can be screwed, which limits the rotating body 14 in a movement in the direction of the axis 16.
  • a few radial bores 26 are provided in the pin-shaped extension 22, which open into a circumferential groove 28 of the pin-shaped extension 22.
  • the outer diameter of the pin-shaped extension 22 is slightly larger in the area of the bore 20 than that in the area of the threaded bore 30.
  • the rotating body 14 is shown in Figures 1 to 4. It has a central bore 32 (FIG. 2), the diameter of which is adapted to the two outer diameters of the pin-shaped extension 22
  • the rotating body 14 is provided with an annular, internal recess 34 into which an asymmetrical bore 36 is guided from the end face 38 of the rotating body 14.
  • the bore runs once at an acute angle with respect to the central axis 16 (FIG. 1).
  • the bore 36 is also offset in the direction of rotation, as is shown in particular in FIG. 4.
  • the latter displacement which can take place at an angle of between 5 degrees and 20 degrees, in particular of the order of magnitude between 10 and 15 degrees, causes the rotary body 14 to rotate under the pressure of the water supplied, the displacement angle having a substantial influence on the achieved Speed. Depending on the angle and water pressure, this can be a few thousand rpm.
  • the apparent angle from FIG. 1 between the central axis 16 and the direction of the bore 36 is also in the range of, for example, 5 to 20 degrees and depends on the desired diameter of the output jet of the rotary nozzle.
  • a rectifier body 42 is inserted in the bore 36 and has a number of bores 40 parallel to the central axis of the bore 36 distributed over its cross section.
  • This rectifier body serves to straighten and feed the radial bores 26 and the recess 34 via the bore 20 in the direction of the central axis of the bore 34 and to guide them into a nozzle 44 inserted from the end face 38 of the rotary body 14.
  • the nozzle 44 is preferably screwed into the rotating body 14 and is sealed therein by means of an O-ring 46.
  • the nozzle 44 has a channel 50 which narrows gradually towards its outlet opening 48, this channel preferably tapering non-linearly, for example hyperbolically or parabolically.
  • the nozzle 44 can be provided with a slot 51, which is used to engage a screwdriver.
  • the central element 10 has at the attachment of the pin 22 a stop surface 19 which extends transversely to the central axis 16 and which is opposite an annular area 52 of the rear end face of the rotating body 14. The rest of the outer area of the rear face is chamfered.
  • a central recess 54 on the front end face 38 of the rotating body 14 receives the head of the screw 24, at the bottom of the recess 54 an annular flange 56 (FIG. 3) is provided, which has a substantially circular contact with the underside of the head of the screw 24 offers (Fig. 1). It should be noted that the rotating body 14 has a certain play in the longitudinal direction on the central pin 22.
  • the rotating body 14 is provided in the area near the front end face 38 with circumferentially distributed radial openings, in particular bores 58, into which centrifugal elements such as balls 60 or rollers can be inserted.
  • the balls 60 are circumferentially distributed over the rotating body 14 in such a way that, taking into account the nozzle 44, there is an approximately rotationally symmetrical balancing.
  • Fig. 1 shows that the cup 12, which can be made of plastic or metal, is attached to the rear extension 62 of the central element 10, which attachment can be done, for example, by pressing onto the rear extension 62 provided with a circumferential groove 64.
  • the cup 12 surrounds the rotating body 14 and protrudes beyond it so far that the concentrated water jet emitted by the nozzle 44 preferably passes just past the inner edge 66 of the front opening 68 of the cup 12, as indicated by the dash-dotted line 70 in FIG. 1 is.
  • the shape of the cup 12 is preferably such that at least its inner jacket gradually opens from the fastening area and then merges into the cylindrical area 72.
  • the rotating body 14 is located in the opening funnel-shaped region 74, its outer surface being adapted to the inclination of the funnel-shaped region 74 and there being a certain distance between them.
  • the interior of the cup can be provided with depressions 76 which, in the case of the embodiment according to FIG. 1, consist of longitudinal grooves which extend from the end edge 68 to the balls 60 and are distributed circumferentially.
  • the rotary nozzle according to the invention works as follows:
  • the balls 60 can preferably be provided, which are pressed outwards under centrifugal force when the rotating body 14 rotates and rub against the inner surface 72 of the cup 12, so that braking occurs.
  • This can be reinforced by the fact that the grooves 76 are provided, into which the balls can drop briefly when the rotating body 14 rotates, which results in increased braking.
  • the result is a rotary nozzle that can work at very high pressure, has an extremely good cleaning effect, is made up of very few parts and is completely sealless and maintenance-free.
  • the rotary nozzle can be designed for very different pressures.
  • the otherwise irritating leakage water is carried along by the sharp jet 70.
  • the hydraulic pressure difference in the area of the recess 34 significantly reduces the friction on the end faces of the rotating body 14.
  • the rectifier body 40 used in the embodiments of the invention can consist of both metal and plastic, wherein longitudinal grooves can also take the place of bores.
  • the offset angle of the axis of the nozzles 44 also determines the starting behavior of the rotary nozzle. If necessary, it should also be selected taking into account the braking means so that the omnidirectional jet is not atomized due to the air resistance and the centrifugal force and is therefore ineffective.

Landscapes

  • Nozzles (AREA)

Claims (14)

1. Buse rotative comprenant un élément de support et d'alimentation central (10), sur lequel prend appui, pour tourner autour d'un axe central (16), un corps rotatif (14) sur lequel est monté au moins un élément de buse (44) orienté vers la sorite de la buse rotative, dont l'axe (70) est décalé tant part rapport à l'axe central (10) que dans le sens de rotation de la buse rotative, caractérisé en ce qu'une gaine (12), fixée du côte entrée de l'élément de support et d'alimentation (10), entoure le corps rotatif (14) à une faible distance telle que les fuites d'eau survenant en cas de non-étanchéité de la buse rotative soient intégrées dans le jet d'eau, et en ce que des dispositifs de freinage à action centrifuge sont prévus entre le corps rotatif (14) et la gaine (12), et en ce que l'angle entre l'axe central (16) et l'axe (76) de l'élément de buse (74) est inférieur à 25°.
2. buse rotative selon la revendication 1, caractérisée en ce que le corps rotatif (14) est monté sans étanchéité sur l'élément de support et d'alimentation (10).
3. Buse rotative selon la revendication 1 ou 2, caractérisée en ce que l'élément de support et d'alimentation (10) possède un alésage central (20) qui se termine par des ouvertures radiales (26, 28) qui, à leur tour, sont opposées à un espace intérieur (34) dans le corps rotatif, liaison avec l'entrée de la buse (44).
4. Buse rotative selon la revendication 3, caractérisée en ce que l'espace intérieur (34, 36) du corps rotatif (14) présente un corps redresseur (40) qui oriente le liquide alimenté dans la direction du jet de sortie et alimente la buse (44).
5. Buse rotative selon l'une des revendications qui précèdent, caractérisée en ce que l'élément de buse (44) présente un canal (50) à rétrécissement progressif entre l'ouverture d'entrée et l'ouverture de sortie (48).
6. Buse rotative selon l'une des revendications qui précèdent, caractérisée en ce que l'angle entre l'axe central (16) du corps rotatif (14) et l'axe (70) de l'élément de buse (44) est compris entre 5° et 20°.
7. Buse rotative selon la revendication 1, caractérisée en ce que les moyens de freinage sont constitués d'éléments (60) qui sont logés dans des ouvertures du corps rotatif (14), leur mouvement étant limité dans le sens radial par la surface interne de la gaine (12).
8. Buse rotative selon la revendication 7, caractérisée en ce que la surface intérieure de la gaine (12) est formée de telle sorte qu'elle oppose à la rotation des éléments de freinage (60) une résistance importante.
9. Buse rotative selon la revendication 8, caractérisée en ce que la surface intérieure (72) de la gaine (12) est dotée de gorges réparties sur le périmètre, en particulier de rainures continues (76).
10. Buse rotative selon l'une des revendications qui précèdent, caractérisée en ce que la gaine (12) est configurée en forme de calice avec une partie (74) s'ouvrant en entonnoir, dans laquelle est disposé le corps rotatif (14), ainsi qu'une partie cylindrique creuse (72) s'y raccordant, qui s'étend au-delà de la surface extérieure (38) du corps rotatif (14).
11. Buse rotative selon la revendication 9, caractérisée en ce que l'élément de buse (44) est fixé dans le corps rotatif (14) avec une orientation telle que le jet (70) fourni par l'élément de buse (44) passe à proximité du bord interne (66) de l'extrémité frontale (68) de la gaine (12).
12. Buse rotative selon l'une des revendications qui précèdent, caractérisée en ce que la gaine (12) est en matière synthétique et est introduite, en particulier repoussée sur l'extrémité d'entrée de l'élément de support et d'alimentation (10).
13. Buse rotative selon l'une des revendications qui précèdent, caractérisée en ce que les diamètres des zones cylindriques de part et d'autre des ouvertures radiales (26) de l'élément de support et d'alimentation (10), et les diamètres internes correspondant du corps rotatif (14), sont dimensionnés de manière telle qu'une différence de pression est exercée sur le corps rotatif (14) via l'espace intérieur (34), différence qui s'oppose à la contre-pression naissant dans l'élément de buse (44), et en ce que le corps rotatif (14) présente un certain jeu en direction de l'axe central (16), sur l'élément d'appui et d'alimentation (20).
14. Buse rotative selon l'une des revendications qui précèdent, caractérisée en ce que l'angle de décalage de l'élément de buse (44) par rapport à l'axe central (16) est compris entre 1 ° et 25°, de préférence entre 5° et 20°, en particulier entre 10° et 15°.
EP86108987A 1985-09-09 1986-07-02 Tuyère rotative Expired EP0216034B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19853532045 DE3532045A1 (de) 1985-09-09 1985-09-09 Rotationsduese
DE8525639U DE8525639U1 (de) 1985-09-09 1985-09-09 Rotationsdüse
DE3532045 1985-09-09

Publications (2)

Publication Number Publication Date
EP0216034A1 EP0216034A1 (fr) 1987-04-01
EP0216034B1 true EP0216034B1 (fr) 1989-01-18

Family

ID=25835780

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86108987A Expired EP0216034B1 (fr) 1985-09-09 1986-07-02 Tuyère rotative

Country Status (4)

Country Link
US (1) US4747544A (fr)
EP (1) EP0216034B1 (fr)
CA (1) CA1299613C (fr)
DE (2) DE3532045A1 (fr)

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DE3623368C2 (de) * 1986-07-11 1993-12-02 Kaercher Gmbh & Co Alfred Rotordüse für ein Hochdruckreinigungsgerät
US5024382A (en) * 1988-03-31 1991-06-18 Nlb Corp. Self-rotating nozzle and method of use
US4821961A (en) * 1988-03-31 1989-04-18 Nlb Corp. Self-rotating nozzle
IT1220780B (it) * 1988-06-15 1990-06-21 Interpump Spa Dispositivo ad elevata flessibilita' di impiego per la pulitura di superfici mediante un getto di liquido
DE3902135A1 (de) * 1989-01-25 1990-07-26 Paul Hammelmann Duesenkopf mit einem um eine achse drehbar gelagerten, antreibbaren duesentraeger
DE3902478C1 (fr) * 1989-01-27 1990-07-19 Josef 7918 Illertissen De Kraenzle
JPH0433957Y2 (fr) * 1989-02-23 1992-08-13
DE3925284A1 (de) * 1989-07-31 1991-02-14 Falch Reinigungstechnik Gmbh Rotationsduese
DE4013446C1 (fr) * 1990-04-27 1991-05-08 Alfred Kaercher Gmbh & Co, 7057 Winnenden, De
DE9108507U1 (de) * 1991-07-10 1991-11-07 Anton Jäger Montagebau, 7913 Senden Rotordüse für ein Hochdruckreinigungsgerät
US5248095A (en) * 1991-07-31 1993-09-28 Aqua-Dyne Incorporated Rotating nozzle
DE4129026C1 (fr) * 1991-08-31 1993-03-04 Alfred Kaercher Gmbh & Co, 7057 Winnenden, De
DE4221587C2 (de) * 1992-07-01 1994-07-14 Anton Jaeger Rotordüse, insbesondere für ein mit Reinigungsflüssigkeit arbeitendes Hochdruckreinigungsgerät
DE4433646C2 (de) * 1993-09-29 1996-10-10 Anton Jaeger Rotordüse, insbesondere für ein Hochdruckreinigungsgerät
DE4340184A1 (de) * 1993-11-25 1995-06-01 Anton Jaeger Spritzdüse, insbesondere für Hochdruckreinigungsgeräte
US5503334A (en) * 1994-05-27 1996-04-02 Butterworth Jetting Systems, Inc. Swivel jet assembly
DE4419404C2 (de) * 1994-06-03 2001-06-28 Anton Jaeger Rotordüse
US5884642A (en) * 1997-08-07 1999-03-23 Broadbent Spray Rentals Remotely controlled pressurized liquid dispensing mobile unit
US6465186B1 (en) 1997-12-30 2002-10-15 Genecor International, Inc. Proteases from gram positive organisms
US5909848A (en) * 1998-07-17 1999-06-08 Stoneage, Inc. High pressure liquid rotary nozzle with coil spring retarder
DE10049633C2 (de) * 2000-10-05 2002-10-31 Peter Imm Vorrichtung zum mechanischen Reinigen von Werkstücken unter Verwendung von Luft- und Gasströmen
EP1689965A2 (fr) * 2003-11-17 2006-08-16 Tempress Technologies, Inc. Rotors de turbine a reaction a faible coefficient de frottement equipes de joints a portee plane
DE102004048619A1 (de) * 2004-10-06 2006-04-13 Sms Demag Ag Verfahren und Vorrichtung zum Reinigen von Walzen
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US7118051B1 (en) 2005-08-11 2006-10-10 Anton Jager Rotor nozzle
DE102007006672B4 (de) 2007-02-10 2017-10-12 Piller Entgrattechnik Gmbh Vorrichtung zum Erzeugen eines beschleunigten Flüssigkeitsstrahles zum Bearbeiten von Material
WO2008142691A2 (fr) * 2007-05-24 2008-11-27 Objet Geometries Ltd. Procédé d'élimination d'une structure de support d'objets en 3d faits par une fabrication en forme libre solide
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US8607896B2 (en) * 2009-06-08 2013-12-17 Tempress Technologies, Inc. Jet turbodrill
US8298349B2 (en) * 2009-08-13 2012-10-30 Nlb Corp. Rotating fluid nozzle for tube cleaning system
US9279300B2 (en) 2010-11-30 2016-03-08 Tempress Technologies, Inc. Split ring shift control for hydraulic pulse valve
US8528649B2 (en) 2010-11-30 2013-09-10 Tempress Technologies, Inc. Hydraulic pulse valve with improved pulse control
RU2567632C2 (ru) * 2011-08-22 2015-11-10 Альфред Кэрхер Гмбх Унд Ко. Кг Форсуночная головка для уборочного аппарата
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DE3419964C2 (de) * 1984-05-29 1986-04-17 Alfred Kärcher GmbH & Co, 7057 Winnenden Spritzkopf eines Hochdruckreinigungsgerätes

Also Published As

Publication number Publication date
CA1299613C (fr) 1992-04-28
US4747544A (en) 1988-05-31
EP0216034A1 (fr) 1987-04-01
DE3532045C2 (fr) 1988-10-20
DE8525639U1 (de) 1986-01-02
DE3532045A1 (de) 1987-03-19

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