SU53119A1 - Paint sprayer - Google Patents

Description

The paint sprayers supplied by compressed air pressure are already known, equipped with a chamber for mixing paint with compressed air on its way to the nozzle spraying the mixture obtained by the ejection action of an additional jet of compressed air. The present proposal aims to direct the jet of compressed air along the axis of the jet of paint in order to obtain a better dispersion of the latter by supplying compressed air to the mixing chamber along an axial channel in the locking needle.

In FIG. 1 shows a vertical section through a reservoir; FIG. 2-detailed view of the reservoir cap head (on an enlarged scale) with a non-return valve attached to it and a tee (in section); FIG. 3 is a section of the upper part of the tank along line CL in FIG. one; FIG. 4 is a longitudinal section of the sprayer; FIG. 5, 6 and 7-cuts according to AB, CD, EF in FIG. 4 and FIG. 8 is a top view of the right half of FIG. four.

The proposed spray gun intended for the use of various paints, such as Kuzbass lacquer, iron red lead, etc., consists of a reservoir L (Fig. 1) for paint and a spray B (Fig. 4). The tank is a cylinder / sheet of iron. The upper part of the cylinder 7 is provided with a cap 3 screwed into the neck with a head 2 (Fig. 1-3). The bottom of the head of the cap is brazed: a tube 4 for leaving the paint from the tank and a tube 5 that serves to force air into the tank with paint. The head 2 is equipped with two fittings 10, W (Fig. 2), one of which / O is connected with a hose 24 with a fitting 24, which serves to supply paint through pipe 77 (Fig. 4, 7) to the mixing chamber 75 of the spray gun, and to Another fitting W is connected to a check valve 6 and a tee 7. Oano from the branches of the tee 7 is connected by a nipple 9 with a hose to an air line from a pneumatic installation, while its other branch is connected with a nipple 9 with a hose 24 to supply air through a pipe 77 (fig 7) and axial channel a in the locking needle // in mixing chamber J3 (Fig. 4). The check valve 6 (FIG. 2) is designed to prevent the return of air from the paint reservoir to the hose supplying compressed air. The tubes and 5 in the tank with paint are enclosed in a grid 16 (Fig. 1), which serves as a filter. The tank is provided with a hole with a plug 15 (Fig. 3) for pouring paint. The locking needle //, located w; and with under the action of the spring / 2 (Fig. 4), is connected by a cable 18 to the starting lever 22. The pipes 17, 17, the cable 18 and the lever 22 are enclosed in a casing 19, 20, having a slit for passage lever 22. At the front end of the sprayer the tip is screwed (serving to concentrate the colorful dust, inside which, with a certain gap, the nozzle J4 is located. To control the flow of paint and air to the sprayer, faucets 23 and 23 are provided (Fig. 8). from tank A the paint is directed to the chamber / 3 AL of mixing with compressed air m, coming through the axial channel of the locking needle 7 /, previously installed in the working position by means of the starting lever 22,

and then passes to the nozzle J4, which produces the atomization of the mixture obtained by the ejection effect of an additional jet of compressed air supplied through the tube / 7 and channel 27 (Fig. 4). At the end of the operation, the spray gun is rinsed with kerosene or turpentine to prevent the hose from deteriorating under the influence of the paint hardened in them, and then it is blown with air to dry.

The subject matter of the invention.

Paint sprayer supplied by compressed air pressure, equipped with a chamber for mixing paint with compressed air on its way to the nozzle, spraying the mixture obtained by the injection effect of an additional stream of compressed air, characterized in that an axial flow of compressed air into the mixing chamber a channel in the locking needle in order to direct the jet of compressed air along the axis of the jet of paint and thereby obtain a better dispersion of the latter.

to the author's testimony of K. K. Tenenpkin

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