Rotating nozzle

Details Rotating nozzle Rotating nozzle

1996-10-10

1998-10-20

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

With cleaning means, drip collecting, waste disposal or soil...

Nozzle cleaner, flusher or drainer

239116, 239383, 239456, 239571, B05B 1502

Patent

active

058234357

DESCRIPTION:

BRIEF SUMMARY
This invention relates to a rotating nozzle and in particular to a nozzle which is adapted, whilst rotating, to cause sprays of liquid to move outwardly to effect a cleaning operation.
Such nozzles are used, for example, in cleaning containers, such as say road tankers where the nozzle can be selectively inserted into the tanker, barrels and the like, where, again, the nozzle can be inserted through the bung aperture, and food equipment, which may be mixers, extruders or other devices. Alternatively, in a number of applications, the nozzles, and the associated liquid lines can be fixed to the article to be cleaned.
Such nozzles have been known and normally include a rotor which is adapted to distribute liquid applied thereto under pressure and which is also arranged as to be rotated by the liquid impinging thereon.
These nozzles have been satisfactory, and indeed are probably the most satisfactory way of cleaning the types of articles to which they are applied, other than physical cleaning by a person, although this can be difficult if not impossible in some containers, but they do suffer from drawbacks.
The first of these is that, generally, they are reliant on the liquid being extremely clean and free from any particles.
It will be appreciated that generally they have a rotor shaft or pintle which extends through the centre of the nozzle rotor and the liquid can normally pass both between the rotor and the shaft, to provide a bearing, and may well also provide a hydraulic bearing at the lower end of the rotor and externally thereof, the external liquid acting both to drive the rotor by impinging thereon and being thrown away therefrom, by the actions being controlled by the shape of the rotor.
If there are any solid materials which pass between the shaft and the rotor these can destroy the liquid bearing formed there between and can prevent the rotor from rotating relative to the shaft.
Normally the input liquid passes through a filter to avoid any such material passing but this is not absolutely reliable.
A first object of the invention is to provide a nozzle of this general type in which such problems can be substantially or completely overcome.
Also, with nozzles of this type we find that whilst we get a very good spray distribution around the periphery of the nozzle and upwardly relative to the nozzle that there tends to be a void in the spray directly beneath the nozzle.
A second object of the invention is to overcome or minimise this disadvantage.
In its broadest aspect we provide a rotating nozzle of the type generally hereinbefore described in which the rotor shaft is tapered and the nozzle is provided with a bore which is similarly tapered, a head being provided on the lower end of the rotor shaft which provides an annular abutment surface and a counter bore in the rotor, a spring located between the abutment and the top of the counter bore, the arrangement being such that when the nozzle is used under pressure the rotor is moved against the spring to adopt a position which is similar to conventional rotors but when the pressure is released the spring causes movement of the rotor against the flow to effectively enlarge the annular space between the rotor and the shaft to permit any solid material which is passed there between to be flushed therefrom.
In the second aspect of the invention we provide a device similar to that described here in above wherein under the pressurised application liquid can be passed around the head of the shaft and be constrained to move initially generally downwardly to provide a spray in the area which would normally be void.
In order that the invention may be more readily understood we shall describe one particular form of spray nozzle made in accordance with the accompanying drawings, in which:
FIG. 1 shows a side elevational, perspective view of the nozzle;
FIG. 2 shows a vertical section through the nozzle, with the spray head being in its operative position;
FIG. 3 shows an enlarged view of the spider and the interconnection of the spray head; and
FIG. 4 shows an

REFERENCES:
patent: 3685735 (1972-08-01), Foster
patent: 3974853 (1976-08-01), Bentley
patent: 4261515 (1981-04-01), Rosenberg et al.
patent: 4832264 (1989-05-01), Rosenberg
patent: 5033676 (1991-07-01), King et al.
patent: 5193746 (1993-03-01), Iwamura et al.
patent: 5215254 (1993-06-01), Haruch
patent: 5232156 (1993-08-01), Csordas et al.

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