EP0439475A1 - Autage a rotor pour appareil de nettoyage a haute pression - Google Patents

Autage a rotor pour appareil de nettoyage a haute pression

Info

Publication number
EP0439475A1
EP0439475A1 EP89910846A EP89910846A EP0439475A1 EP 0439475 A1 EP0439475 A1 EP 0439475A1 EP 89910846 A EP89910846 A EP 89910846A EP 89910846 A EP89910846 A EP 89910846A EP 0439475 A1 EP0439475 A1 EP 0439475A1
Authority
EP
European Patent Office
Prior art keywords
rotor
axis
nozzle
housing
rotation
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.)
Pending
Application number
EP89910846A
Other languages
German (de)
English (en)
Inventor
Werner Schulze
Helmut Gassert
Josef Schneider
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.)
Alfred Kaercher SE and Co KG
Original Assignee
Alfred Kaercher SE and Co KG
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 Alfred Kaercher SE and Co KG filed Critical Alfred Kaercher SE and Co KG
Publication of EP0439475A1 publication Critical patent/EP0439475A1/fr
Pending legal-status Critical Current

Links

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
    • B05B3/02—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
    • B05B3/0409—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 with moving, e.g. rotating, outlet elements
    • B05B3/0463—Rotor nozzles, i.e. nozzles consisting of an element having an upstream part rotated by the liquid flow, and a downstream part connected to the apparatus by a universal joint

Definitions

  • the invention relates to a rotor nozzle for a high-pressure cleaning device with a housing, a rotor rotatably mounted therein and rotated by the cleaning liquid and with a nozzle arranged downstream of the rotor, the outlet axis of which includes a variable acute angle to the axis of rotation of the reter and which is rotated by the rotor in such a way whose axis of rotation is rotated so that the emerging jet of cleaning liquid rotates on a cone jacket.
  • Such a rotor nozzle is known from German Patent 36 23 368. It enables a point jet to be emitted which revolves on a cone shell, the angle of the cone shell being able to be widened as a function of the speed in the known rotor nozzle. It is an object of the invention to develop a generic rotor nozzle so that the operator can specifically adjust the angle of the cone shell, on which the spot beam rotates, independently of other operating parameters. This object is achieved in a rotor nozzle of the type described in the introduction in that adjustable stops are arranged in the housing, which limit a widening of the acute angle between the outlet axis of the nozzle and the axis of rotation of the rotor more or less depending on the position of the limiting elements.
  • stops By adjusting the stops, it is easily possible to limit an inclined position of the nozzle and thus an increase in the opening angle of the cone shell, the operator being able to move these stops in the housing of the rotor nozzle, so that the stops then have a differently wide inclination of the nozzle outlet axis compared to the rotor axis of rotation.
  • the stop surrounds the stilt concentrically to the axis of rotation of the rotor, is adjustable in the direction of the axis of rotation of the rotor and forms a circumferential contact edge on the outside of the stilt.
  • the stop in the housing is axially displaceable and rotatably mounted with respect to the axis of rotation of the rotor and is screwed into a threaded bore of an adjusting sleeve arranged coaxially to the axis of rotation of the rotor, which is axially immovable in the housing and freely rotatable with respect to the axis of rotation of the rotor .
  • the stop inside the housing can then be moved in the axial direction, so that the exit angle of the spot beam is infinitely adjustable.
  • the driver carries a groove running in the radial direction, into which the stilt is immersed with a driving pin.
  • the adjustment sleeve can close the front of the housing and support the pan for storing the stilts. In this way, the adjusting sleeve practically forms part of the
  • Housing emerges in the area of the rotor nozzle immediately downstream of the nozzle. As a result, part of the cleaning liquid is guided past the nozzle, so that the pressure of the point jet emerging from the nozzle can be varied. This pressure variation is also supported by the fact that the amount of liquid carried past the nozzle in the bypass re-enters the spot stream in the region downstream of the nozzle and thereby the latter
  • bypass line comprises a plurality of bypass channels surrounding the nozzle, which are preferably all constructed identically.
  • the effect of the liquid bypassing the nozzle is particularly advantageous if the bypass line in a funnel from its wall that adjoins the nozzle and widens conically in the direction of flow
  • bypass line emerges, in particular if the bypass line enters the funnel essentially in a radial plane arranged perpendicular to the axis of rotation of the rotor, that is to say essentially perpendicular to the beam direction.
  • the amount of liquid emerging through the bypass line is deflected in the direction of the point jet and entrained by it, so that there is a coating of the sharp core of the point jet which, until it hits an area to be cleaned, is fanned out into an essentially homogeneous Beam leads.
  • metering valves are arranged in the bypass line and their position can be adjusted by one-piece members arranged on the outside of the rotor nozzle. These enable a continuous or also a gradual metering of the flowing through the bypass line
  • Amount of liquid so that the operator has the possibility of adjusting the jet between a sharply focused, pure point jet and a highly diversified, largely homogeneous jet.
  • Dosing valves result when an adjusting ring is rotatably mounted on the housing concentrically to the axis of rotation of the rotor, which on its inside bears bearing surfaces for valve bodies of the dosing valves which protrude radially from the housing and are pressed elastically against the bearing surface, and when the bearing surfaces rotate when the Adjusting ring in
  • an upstream of the rotor from the flow path may also be used
  • Bypass can be provided which leads past the rotor in such a way that the cleaning liquid flowing through it does not lead to
  • Rotary drive of the rotor contributes. This results in the possibility of the rotation of the rotor and in particular the
  • Rotor is rotatably mounted on a hollow shaft, which supplies the cleaning liquid to the inside of the rotor, it can be provided that in the hollow shaft a tube piece which is axially displaceably mounted in the housing is immersed and is essentially sealed in the fully inserted state with respect to the hollow shaft when pulled out the hollow shaft, however, forms a connection between the inner region of the pipe section and the bypass.
  • a tube piece which is axially displaceably mounted in the housing is immersed and is essentially sealed in the fully inserted state with respect to the hollow shaft when pulled out the hollow shaft, however, forms a connection between the inner region of the pipe section and the bypass.
  • Pipe section has lateral wall openings which are covered by the hollow shaft when the pipe section is fully inserted, but are released from the wall of the hollow shaft when the pipe section is pulled out of the hollow shaft, and when an annular channel surrounding the pipe section forms part of the bypass.
  • the adjustment of the pipe section is particularly simplified if the pipe section is screwed into an internally threaded bore of the housing running coaxially to the axis of rotation of the rotor. It is then possible to continuously adjust the ratio of the amount of liquid passed through the rotor to the amount of liquid passed by the rotor and thus the speed of rotation of the rotor, simply by rotating the pipe section relative to the housing and by the associated axial displacement in the thread.
  • Figure 1 a longitudinal sectional view of a rotor nozzle with speed adjustment of the rotor, angle adjustment of the nozzle and pressure adjustment of the jet with a setting for maximum speed, maximum opening angle of the spot jet and open bypass line for fanning out the spot jet
  • FIG. 2 shows a side view of a further preferred exemplary embodiment of a part which is shown partially broken away Rotor nozzle with a setting for
  • the rotor nozzle shown in Figure 1 comprises a cylindrical housing 1 which carries an internally threaded bore 2 on one side, while it is open on the opposite side.
  • the inner threaded bore 2 is followed by a bore with a smooth inner wall 4, which merges into a bearing bore 5 with a reduced inner diameter and finally opens into the cylindrical interior 6 of the housing 1, the inner diameter of which is substantially larger than the inner diameter of the bearing bore 5.
  • a hollow shaft 7 is inserted into the bearing bore 5, which is supported with an annular flange 8 on the step 9 between the inner wall 4 of the bore 2 and the bearing bore 5 and which projects into the interior 6 of the housing.
  • a rotor 10 is rotatably mounted, which has two arms 12 projecting radially from the hollow shaft 7 and reaching as far as the inner wall 11 of the interior 6.
  • the rotor 10 is secured on the hollow shaft 7 in the axial direction on the one hand by a step 13 on the outer circumference of the hollow shaft 7 and on the other hand by a screw 14 which is screwed into the free end of the hollow shaft 7 and thereby closes the end face of the hollow shaft 7.
  • the hollow shaft 7 has at the height of the arms 12 of the rotor 10 wall openings 16 which connect the interior of the hollow shaft 7 with the interior 17 of the rotor 10, which again through holes 1B in the arms 12 with outlet openings 19 to the Ends of the arms 12 communicates.
  • the outlet openings point in opposite directions in the circumferential direction, so that liquid escaping through the outlet openings 19 rotates the rotor on the hollow shaft 7.
  • the liquid supply to the hollow shaft 7 takes place via a pipe piece 20 screwed into the internal threaded bore 2, which carries a coupling ring on the part emerging from the housing 1 for connection to a jet pipe of a high-pressure cleaning device (not shown in the drawing), while on the opposite side into the Hollow shaft 7 immersed.
  • the pipe section 20 is sealed by means of an annular seal 22 with respect to the smooth inner wall 4 of the bore 2, in addition the tubular section 20 also carries a further annular seal 23 in a conically narrowing transition area 24 which, when the tubular section 20 is fully inserted into the hollow shaft 7, seals against a complementary one Sealing surface 25 rests in the entry area into the hollow shaft 7.
  • a plurality of radial openings 26 are arranged in the wall of the pipe section, which are sealed off by the inner wall of the hollow shaft 7 when the pipe section 20 is fully inserted into the hollow shaft 7, as shown in FIG. 1.
  • the pipe section 20 can be rotated in the internal threaded bore 2 with respect to the housing 1 and thereby displaced in the axial direction until the interior of the pipe section 20 is connected via the openings 26 to the annular channel 27 formed by the bore 2 and surrounding the pipe section 20, such as this is shown in the embodiment of Figure 2.
  • This ring channel 27 is over a row
  • Driver 29 is placed in a rotationally fixed manner and has a groove or opening 30 running radially from the center to the outside.
  • a driver pin 31 of a stilt 32 which carries a nozzle 33 with a spherical head, plunges into this groove.
  • This stilt is supported by the spherical part of the nozzle
  • the bearing pan 37 is one in the end wall 39
  • Adjustment sleeve 40 arranged in the open end of
  • Immersed housing 1 sealed by means of an annular seal 41 and is mounted on the housing 1 in the axial direction immovably and freely rotatable.
  • the housing on its inner wall an annular groove 42 and
  • Adjusting sleeve 40 on its outer wall has an annular groove 43 aligned with the annular groove 42, into which a clip 44 is inserted.
  • the adjusting sleeve 40 has an internal thread 45, into which a hood-shaped stop 46 is screwed, which engages in longitudinal grooves 48 on the inner wall of the interior 6 of the housing 1 by means of laterally projecting guide projections 47 and thereby the hood-shaped stop 46 relative to the housing 1 axially displaceable, but non-rotatably.
  • Stop 46 can also be moved between a fully screwed-in position (FIG. 1) into a position in which it is approximated to rotor 10. In this position, the hood-shaped stop 46 extends over the driver 29 of the rotor 10 (FIG. 2).
  • the stop 46 is provided with an inwardly projecting stop edge 49 which runs concentrically to the axis of rotation of the rotor and which abuts the outer wall of the stilt 32 and thus the oblique position of the stilt 32 relative to the axis of rotation of the rotor limited.
  • the stop 46 shown in FIG. 1 in which it is fully screwed into the internal thread 45, a very extensive inclination is possible; in the extreme case of the stop completely unscrewed in FIG. 2, on the other hand, the stilt becomes inclined 32 prevented at all, so that the outlet axis of the nozzle practically coincides with the axis of rotation of the rotor.
  • the hood-shaped stop 46 also forms a collecting space 50 for the liquid entering the interior 6.
  • This collecting space 50 is conically narrowed in the part facing the nozzle 33, so that the liquid on the one hand
  • the bearing socket 37 is provided concentrically surrounding a plurality of bores 52 parallel to the axis of rotation of the rotor, which open out into radial bores 53 of the adjusting sleeve 40 leading from the outside inwards.
  • These radial bores 53 first have an enlarged outer part 54 and then an inner part 55 with a reduced cross-section, which opens into a central, funnel-shaped opening 56 in the adjusting sleeve 40, which adjoins the opening 38 of the bearing socket 37 connects.
  • the holes 53 enter in the radial direction in the funnel-shaped
  • valve bodies 57 which are displaceable in the longitudinal direction of the bores and which are sealed with respect to the bore 53 by means of ring seals 58 and optionally close or release the bore 53 in the transition region between the outer part 54 and the inner part 55.
  • the valve body 57 by im
  • the contact surface 60 has different distances in the axial direction from the axis of rotation of the adjusting ring 61, so that when the adjusting ring 61 is rotated, the valve body 57 is pressed into the bore 53 to different depths against the action of the helical spring 59 and thereby the
  • Liquid particles This transition can be varied infinitely by adjusting the metering valves.
  • the bores 52 and 53 formed bypass line are opened, in the exemplary embodiment in FIG. 2, however, the metering valves are shown closed.
  • the adjustment of the valve body is not over one made of the adjusting sleeve rotatable adjusting ring, but the valve body 57 are screwed into the outer part 54 of the bore 53 and rotatable directly via knurled disks 63 and adjustable to different immersion depths.
  • Point beam continuously adjustable between 0 and a maximum value, for example 10 °. It is also possible to continuously adjust the speed of the jet by not directing part of the liquid through the rotor, but past the rotor. Finally, the nature of the beam itself can be changed by the fact that the
  • Liquid flow is divided by the nozzle 33 and a quantity of liquid is added transversely to the point jet.
  • Variations can be made by rotating individual parts about the longitudinal axis of the housing, namely by rotating the entire housing relative to the pipe socket fixed to the jet pipe, by rotating the adjusting sleeve relative to the housing and finally by rotating the
  • Adjustment ring opposite the adjusting sleeve, being external
  • Housing, adjusting sleeve and adjusting ring are in alignment and thus have a cylindrical outer contour for the entire
  • Rotor nozzle - can be maintained.

Landscapes

  • Nozzles (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

Un appareil de nettoyage à haute pression comporte un rotor (10) monté rotatif dans un logement et mis en rotation par un liquide de nettoyage, et un ajutage (33) en aval du rotor (10), dont l'axe de sortie forme avec l'axe de rotation du rotor (10) un angle aigu variable. L'ajutage (33) est mis en rotation par le rotor (10) autour de l'axe de rotation de ce dernier de sorte que le jet de liquide de nettoyage sortant de l'ajutage tourne sur une aire latérale conique. Afin de permettre le réglage de l'angle de sortie du jet ponctuel sans pour autant devoir modifier d'autres paramètres, des butées réglables (46) sont disposées dans le logement (1) et limitent plus ou moins l'élargissement de l'angle aigu entre l'axe de sortie de l'ajutage (33) et l'axe de rotation du rotor (10) en fonction de la position des éléments limiteurs.
EP89910846A 1988-10-22 1989-09-21 Autage a rotor pour appareil de nettoyage a haute pression Pending EP0439475A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3836053A DE3836053C1 (fr) 1988-10-22 1988-10-22
DE3836053 1988-10-22

Publications (1)

Publication Number Publication Date
EP0439475A1 true EP0439475A1 (fr) 1991-08-07

Family

ID=6365710

Family Applications (2)

Application Number Title Priority Date Filing Date
EP89117490A Expired - Lifetime EP0372182B1 (fr) 1988-10-22 1989-09-21 Buse de rotor pour appareil de nettoyage à haute pression
EP89910846A Pending EP0439475A1 (fr) 1988-10-22 1989-09-21 Autage a rotor pour appareil de nettoyage a haute pression

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP89117490A Expired - Lifetime EP0372182B1 (fr) 1988-10-22 1989-09-21 Buse de rotor pour appareil de nettoyage à haute pression

Country Status (6)

Country Link
US (1) US5217166A (fr)
EP (2) EP0372182B1 (fr)
AU (1) AU4327589A (fr)
DE (1) DE3836053C1 (fr)
DK (1) DK66291D0 (fr)
WO (1) WO1990004468A2 (fr)

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Also Published As

Publication number Publication date
EP0372182A3 (en) 1990-07-18
AU4327589A (en) 1990-05-14
WO1990004468A3 (fr) 1990-06-14
EP0372182A2 (fr) 1990-06-13
DK66291A (da) 1991-04-12
EP0372182B1 (fr) 1994-01-19
WO1990004468A2 (fr) 1990-05-03
DK66291D0 (da) 1991-04-12
DE3836053C1 (fr) 1990-01-11
US5217166A (en) 1993-06-08

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