Fluid sprinkling – spraying – and diffusing – Including supplemental gas shaping or shielding jet – On one side only of spray orifice
Patent
1984-10-05
1991-03-12
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
Including supplemental gas shaping or shielding jet
On one side only of spray orifice
137893, 239300, 239341, 239346, 239371, B05B 724, B05B 730
Patent
active
049989936
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The invention relates to a spraying gun, in particular for applying and spraying, resp. dyestuffs, slurry and/or granular substances.
BACKGROUND ART
Different spraying, blowing devices, as e.g. dyestuff spraying guns, mortar throwers, sand blasting apparatuses, are widely used in the industry. The guns and apparatuses, resp. developed for the most diverse purposes meet more ar less the requirements. However, the known apparatuses have also well-known disadvantageous features. So, e.g. in the case fo dye sprayer operated with air-atomization, only highly diluted dyestuffs can be used. Although airless spraying guns are suitable for thicker dyestuffs, a special quality of dyestuff is nedded, and a they work at an overpressure of 120 to 160 which is disadvantageous from several point of view.
It is characteristic of all the known spraying guns that spraying is possible in the direction of the longitudinal axis, i.e. straight forward only. However, in practice one is often confronted with the task to coat the "backside" of pipes, cables, frameworks, etc. which are convered or concealed by a wall, i.e. surfaces ought to be coated which cannot be seen. This work is presently performed manually, using bent brushes. The drawback of this forcible solution lies in that partly manual work is expensive and unreliable, in addition to this live labour does not stay always available, in spite of high wages. A further disadvantage lies in the fact that there are coating materials, e.g. different slurries and dispersions, which cannot be applied on surfaces in the desired quality by using a brush.
The majority of the known spraying devices are discontinuously operated, accordingly automatic, continuous operation is not possible or one has to overcome considerable difficulties in this respect.
No spraying gun has become known up to now which would be equally suitable for spraying or blasting diluted and thick dyestuff, slurries containing rough particles or just dry particles, as e.g. corundum flasting onto the surfaces to be coated or cleaned.
DISCLOSURE OF INVENTION
The object of our invention is, in addition to being able to absolutely eliminate the above discussed deficiencies, suitable for spraying or blowing detergents, diluted dyestuff, thick dyestuff, diverse fibrous materials or particles containing slurries in a straight direction or at a predetermined angle for coating surfaces or for blasting of dry particles, as e.g. sand or crushing corundum or for the completely dust free blowing of slurry formed with abrasive particles for cleaning or roughing given surfaces.
The abject can be realized by using the sprying gun according to this invention. The spraying gun according to the invention comprises a feeding unit, a spraying head consisting of a material charging pipe a blast pipe enclosing the feeding pipe being, for example, parallel therewith and mutually removable, for controlling the material stream and thus the cone angle of the outlet stream, and an air-jet pipe confining an angle with the direction of the outlet stream, and a pipe line interconnecting the material feeding unit and the spraying head.
BRIEF DESCRIPTION OF DRAWING
The invention will now be described in detail by means of two preferred embodiments, by the aid of the drawings enclosed.
FIG. 1 shows a schematical side view of the spraying gun, partly in a sectional view.
FIG. 2 is a schematic side view of the spraying gun with a material feeding pump.
BEST MODE OF CARRYING OUT THE INVENTION
According to this invention the spraying gun consists of three main parts: a spraying head 1, a material feeding unit 2 and a conveniently flexible pipeline 3 interconnecting the first mentioned two said parts. The essence of the spraying gun according to the invention lies in that it comprises a material feeding unit 2, a pipeline 3 connected on one end to said material feeding unit, and connected by the other end to a preferrably straight charging pipe 8. A blast pipe 9 concentrically encloses the material charging pipe 8 and con
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Kenderi Laszlo
Kenderi Tibor
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