SU1240465A1 - Spraying device - Google Patents

Description

The invention relates to a device for spraying paints and varnishes by a combined method, in which the formation of a painting torch occurs both by flowing a material under pressure through a nozzle of a special section and shape, and by acting on a jet of paint to a stream of compressed air.

The device is intended for use in the sprayers of the combination nozzle 2 annular chamber 10 communicating on one side with four channels 5, and on the other with annular channel 6. Channels 5 and 9 are connected to the annular chamber 10 bushings 4, and the axes of the channels 8 are perpendicular to the axis of the nozzle 2. The diameter of the channels 5 is 0.8-1.0 width of the annular channel 6. The end face 11 of the sleeve 4 is 0.8-1.0 mm recessed relative to the end

The method of applying paintwork material 12 to air cap 7, and the end of 13 materials, both ordinary viscosity and highly viscous, can be used in various industries for spraying liquids, providing a uniformly saturated cross section and a fine torch.

The aim of the invention is to enable the device to operate in various modes while maintaining uniform distribution of the material over the cross section of the flame.

The internal nozzle 2 is recessed or located at the same level with the end face 11 of the sleeve 4. The spraying device operates as follows.

Include the supply of sprayed material to the nozzle 2 under a pressure of 15-50 kgf / cm

from her.

From the annular channel b expires compressed

maximum air speed on

25 sections of the annular channel located

on the small and big axle ellipsoid

and compressed air under pressure of kgf / cm to the air head 7.

The material is ejected from the elliptical orifice of the nozzle 2, in this case the flat elliptical flow is formed with the biHA of FIG. 1 depicts a spray zone of voids between the central part.

device incision; in fig. 2 - cross-flow and areas, the most distant A-A in FIG. one; in fig. 3 is a plot of airflow rates at the cut of the sleeve relative to the center of intersection of the axes of the ellipsoid hole.

The spraying device contains a bore, and is minimal in areas, placed in the housing 1 material nozzle 2 located at an angle of 30-35 ° to the larger axis.

with ellipsoid hole 3, fixed-When meeting an unevenly filled

compressed air supply in the sleeve 4 and covering the flow of material with an uneven flow through the air channel, the air flow at the inlet in the form of four channels 5 is made in certain sections, redistribution of material occurs

arranged in pairs along a large and torch, its concentration decreases in

the loy axis of the ellipsoid hole 3, re-central and most distant from the center

going into the annular channel 6 at the exit of the zones and filling the voids.

In the housing there are an air head 7 with a spray device which provides

channels 8, located in plane jc at different pressures of the material and crushing axis of the ellipsoid hole 3, together with air, increasing the uniformity of the channels through the channels 9 with the source of material distribution over the flare section and

compressed air supply (not shown). In most cases, the increase in uniformity of the nano-case 1 is made by covering the painted paintwork.

The circumferential nozzle 2 is an annular chamber 10 connected on one side with four channels 5, and on the other with an annular channel 6. Channel8 8 communicates with the annular chamber 10. Axes of channels 5 and 9 are parallel to the outer surface of sleeve 4 and axes of channels 8 are perpendicular The axes of the nozzle 2 are. The diameter of the channels 5 is equal to 0.8-1.0 of the width of the annular channel 6. The end 11 of the sleeve 4 is 0.8-1.0 mm recessed relative to the end

 12 of the air cap 7, and the end 13 of the mother 12 of the air cap 7, and the end 13 of the material nozzle 2 are recessed or located flush with the end 11 of the bush 4. The spraying device works as follows.

Include the flow of sprayed material to the nozzle 2 under a pressure of 15-50 kgf / cm

and compressed air under pressure of kgf / cm to the air head 7.

from her.

From the annular channel b expires compressed

maximum air speed on

areas of the annular channel located

on the small and big axle ellipsoid

flow and areas most remote

openings, and minimal in areas, rasA-A

THAT

FIG. g

0.9-0.35 Un.mox 0.65-0.7U.Nax Un., 5-0.5U.A№ 0, SS-0,7VH.MOi (c

ff

0.95-1.0 VH.MOKC

0, eS-0,7VH.fiaxc MHMUH-df-SfVH.HOKC p, SS-0,7VH.naKC

0.9-0.95VH.Mai (c

H.HOKC

Rig.Z

Compiled by T. Kuzina

Editor M. TsitkinaTehred I. VeresKorrektor A. Obruchar

Order 3427/5 Circulation 681 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Claims (1)

A SPRAYING DEVICE containing a material nozzle located in the housing with an ellipsoidal aperture and a compressed air supply channel covering it and an air head with channels located in the plane of the minor axis of the ellipsoidal aperture of the nozzle, characterized in that, in order to enable the device to operate in various modes while maintaining uniform distribution of material over the cross section of the torch, the compressed air supply channel covering the material nozzle at the inlet is made in the form of four channels, arranged in pairs laid along the major and minor axis of the ellipsoidal hole, passing into the annular channel at the outlet, an annular chamber covering the material nozzle is made in the housing, communicating with four channels on the one hand and with the annular channel on the other, while the air ducts are communicated by their output ends with an annular chamber, and the diameter of each of the four channels was chosen equal to 0.8-1.0 of the width of the annular channel. <Riga. 1 and „„ 124U4t) b A1