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, into which a supply line for cleaning liquid opens, with an outlet for the cleaning liquid, with a flow of the cleaning liquid, arranged in the housing nozzle body, which has a crowned end in a pan-shaped, the Supporting the outlet of the housing surrounding the bearing and which is caused by the flow of the cleaning liquid through the housing in a circular movement, in which the longitudinal axis of the nozzle body rotates on a conical jacket, the bearing supporting the nozzle body by a worked into the inner wall of the housing, concentrically Outlet arranged recess is formed.
• Rotor nozzles are known for example from DE 40 13 446 B1. Due to the circulation of the nozzle body on a cone jacket, the jet of cleaning agent that is dispensed by it and discharged through the outlet from the housing is guided on a cone jacket, so that it is possible with such a rotor nozzle to cover a larger area with a jet that remains compact and has only a very small cross-section. With such rotor nozzles, the nozzle body is pressed into the recess in the axial direction with great force; In order to be able to absorb these forces, efforts have therefore been made in known rotor nozzles to use special bearing surfaces in the housing which are able to cope with the stress caused by the system of the rotor body. This leads to a relatively complex construction, since a special bearing body that supports the nozzle body must be inserted into the housing.
• the opening angle of the depression is between 110 ° and 150 °, in particular between 120 ° and 140 °, preferably 130 °.
• the spherical end of the nozzle body can be spherical, it being advantageous if the radius is between 3 mm and 7 mm, preferably 5 mm.
• the housing consists of plastic, in particular polyamide, it being advantageous if the polyamide contains a glass fiber component, for example in the order of 30%.
• the housing has a housing foot, into which the feed line opens, and a housing hood which can be connected to the housing and into which the outlet with the recess is incorporated. This makes it possible to separate the housing in a simple manner, the housing cover can be replaced, so that if there are signs of wear in the area of the bearing, a new housing cover is simply placed on the housing base.
• the housing base and housing hood can preferably be connected to one another by screwing.
• the nozzle body consists of a tubular body with a nozzle inserted into it, which forms the spherical end of the nozzle body.
• the nozzle body comprises a tubular body, one end of which forms the spherical end of the nozzle body.
• the nozzle body itself forms the circulating body with the flow channel, the nozzle and the spherical end for support in the recess.
• the nozzle body consists of plastic, in particular of polyether ether ketone, at least in the region of the spherical end.
• the material pairing of glass fiber reinforced polyamide / polyether ether ketone is particularly low-wear, so that a long service life can be achieved with a pairing of such plastics, although no special bearing bodies are provided. Overall, the manufacturing costs and the manufacturing outlay can be reduced considerably because it is sufficient to produce the nozzle body and housing hoods from plastic in the usual manner of production, these parts can then be used in the rotor nozzle without further changes.
• Figure 1 is a longitudinal sectional view of a rotor nozzle according to a first preferred embodiment
• Figure 2 is a view similar to Figure 1 according to a second preferred embodiment.
• the rotor nozzle shown in the drawing is attached to the end of a supply line 1 in order to dispense cleaning liquid, which is supplied via the supply line from a high-pressure cleaning device, under high pressure in a compact jet which circulates along a cone jacket.
• the feed line 1 opens into a housing foot 2, which essentially has the shape of a pot with an external thread 3.
• the confluence of the supply line 1 takes place centrally, the supply line 1 through the Bottom 4 of the cup-shaped housing base 2 passes through and extends approximately to the upper edge 5 of the cup-shaped housing base 2.
• the supply line 1 is closed at the end, but an opening 6 leads out of the supply line 12, which is oriented such that the liquid emerging from this opening 6 has an essential component which lies in a plane lying perpendicular to the supply line 1 and which runs in the circumferential direction with respect to the longitudinal axis of the feed line 1.
• a hood 7 is screwed onto the external thread 3 of the housing base 2 and forms a closed housing together with the housing base 2.
• This hood 7 has, on the side opposite the housing base 2, a conically widening outlet opening 8, which has a conical recess 9 in the direction of the interior of the housing, which is arranged concentrically to the outlet opening 8 and has an opening angle of approximately 130 °.
• This recess 9 forms a pan-shaped bearing for the spherical end 10 of an essentially tubular nozzle body 11, which has a flow channel 12 which is continuous in the longitudinal direction.
• This flow channel 12 ends in a nozzle opening 13 which emerges centrally from the spherical end 10 and is aligned with the outlet opening 8.
• the tubular nozzle body 11 carries two on the outside at its end opposite the crowned end 10 circumferential O-rings 14, 15, which are supported on the inner wall 16 of the hood 7.
• the nozzle body 11 is made entirely of plastic, preferably of polyether ether ketone, and the housing is also preferably made of plastic, for example of polyamide with a glass fiber content of 30%.
• the particularly stressed bearing area between the spherical end 10 and the recess 9 in the inner wall of the hood 7 shows surprisingly little wear with such a construction, so that long service lives can be achieved with such a rotor nozzle.
• the parts can be produced in the simplest way, since the hood 7 is designed as a one-piece molded part, and the same applies essentially to the nozzle body 11.
• These parts can also be exchanged in the simplest manner by unscrewing the hood 7 from the housing base 2 and replacing it with a new one is replaced. On this occasion, the nozzle body 11 can also be replaced in a simple manner if the wear should exceed a certain level.
• the housing base 2 is here open at the top, the feed line 1 opens directly into the interior of the housing base 2.
• the housing base 2 is closed by a cover 17 via a seal 18, here too the liquid is introduced tangentially through an opening, not shown in this drawing, into the area enclosed by the hood 7.
• the nozzle body 11 is formed in several parts, namely that a special nozzle 19 is inserted into the front end of the essentially tubular nozzle body 11, the end of which protrudes from the nozzle body 11 forms the spherical end 10 of the nozzle body 11.
• This nozzle body 11 is also made of plastic, as is the nozzle 19 used, which can be produced, for example, from polyether ether ketone. Otherwise, the rotor nozzle is constructed in the same way and also works in the same way as that of FIG. 1.
• the configurations of the two different housing feet can also be exchanged. For example, it is easily possible to use a nozzle body 11 with an inserted nozzle 19 in the exemplary embodiment of FIG Figure 1 to use and vice versa.

Landscapes

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

Applications Claiming Priority (3)

Publications (2)

Family

ID=7802322

Family Applications (1)

Country Status (7)

Cited By (2)

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Family Cites Families (9)

• 1996
  • 1996-08-10 DE DE19632323A patent/DE19632323A1/de not_active Withdrawn
• 1997
  • 1997-08-07 WO PCT/EP1997/004312 patent/WO1998006501A1/fr active IP Right Grant
  • 1997-08-07 EP EP97936691A patent/EP0915739B1/fr not_active Expired - Lifetime
  • 1997-08-07 AT AT97936691T patent/ATE236726T1/de active
  • 1997-08-07 DE DE59709796T patent/DE59709796D1/de not_active Expired - Lifetime
  • 1997-08-07 DK DK97936691T patent/DK0915739T3/da active
  • 1997-08-07 CA CA002262733A patent/CA2262733C/fr not_active Expired - Lifetime
• 1999
  • 1999-02-09 US US09/247,167 patent/US6029906A/en not_active Expired - Lifetime

Non-Patent Citations (1)

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