SU1207504A1 - Pneumatic paint sprayer - Google Patents

Description

1207504

2. The paint sprayer according to claim 1, which is different from the fact that the adjusting nut is mounted to the sleeve

possible axial movement.

3. The paint sprayer according to claim 1, similar to

nit with rez hum

The invention relates to a device for spraying liquids and can be used for spreading and applying paints and other liquids on various surfaces by means of pneumatic spray.

The aim of the invention is to reduce paint losses due to fogging and to reduce compressed air consumption.

FIG. 1 shows a pneumatic paint sprayer; in fig. 2 shows section A-A in FIG. one ; in fig. 3 is a view B in FIG. one.

Pneumatic paint sprayer includes a housing 1 with paint supply channels 2 and compressed air 3 and a spray head 4 with material 5 and air 6 nozzles. On the spray head 4, a sleeve 7 with an annular 8 and a conical 9 grooves is installed by means of a threaded connection. A adjusting nut 10 with a conical bore 11 is screwed onto the sleeve 7, forming an annular cavity 12 with the sleeve 7 and an outlet conical slot. The annular cavity 12 is communicated by the outlet pipe 13 to the compressed air supply channel. The tube 13 has an adjustment valve 14.

The spray gun is equipped with a trigger 15, which interacts with the locking needle 16 of the material nozzle 5 and the air valve 17. The locking needle 16 is spring-loaded and equipped with an adjusting screw 18 with a nonius.

Fitting 19 and 20 are provided for supplying compressed air and paint to the spray gun.

The paint tank 21 is connected to the fitting 20 by means of a tube 22 bent at an angle of 90 °, which is installed

The annular cavity of the additional nozzle communicates with the air supply channel through the discharge tube with an adjusting valve.

with the possibility of rotation around the axis of the nozzle 20, located perpendicular to the handle 23.

The paint sprayer works in the following way.

When you press the trigger 15 first opens the valve 17 and the compressed air flows from the channel 3 to the air nozzle 6 of the spray head

4 and through the outlet tube 13 into the cavity 12 and after passing through the conical slit .13 creates an air screen in the form of an expanding cone.

Upon further rotation of the trigger 15, an axial displacement of the needle 16 occurs and the material nozzle 5 is opened. The paint from the tank 21 enters the material nozzle 5 and is sprayed,

form a conical torch. Forming paint around the torch when spraying paint in the form of a fume. It is reflected by an air screen and guided to the surface to be painted.

The thickness of the air screen is controlled by changing the size of the conical slit and when screwing or screwing the adjusting nut 10, the air pressure coming from the tube 13 is adjusted by the valve 14.

The implementation of an additional air nozzle in the form of a sleeve installed on the spray head with an annular and conical grooves and an adjusting nut enclosing it, which forms an annular cavity with the sleeve and an outlet slit

for air entering the annular cavity through a branch pipe connected to the compressed air supply channel to the paint sprayer, provides for the formation of an adjustable

over the thickness of the solid air screen around the spray paint. | In addition, the use of the invention reduces the loss of paint per spray, leads to a decrease in the spread. stroke of the compressed air, improves sanitary conditions during the painting works and reduces the risk of fire.

srig.Z

Compiled by G. Dykov Editor A. Dolinich Tehred O. Vashshshpina Proofreader A.

Order 81/5 Circulation 682 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 (3)

1. PNEUMATIC SPRAY SPRAY, comprising a housing with channels for supplying paint and compressed air, a spray head with material Qut. 1 and air nozzles and an additional nozzle surrounding them for creating an air screen, in communication with the compressed air supply channel and having an adjusting nut, characterized in that, in order to reduce ink loss on fogging and reduce the consumption of compressed air, an additional the nozzle for creating an air screen is made in the form of a sleeve mounted on the spray head with annular and conical grooves, and the adjusting nut has a conical bore, is screwed onto the sleeve and forms from the latter to j ltsevuyu cavity and a conical discharge slit at I / the annular cavity communicates with Ikanalom compressed air. 1¾ a 2. Paint sprayer on π. I, characterized in that the adjusting nut is mounted on the sleeve with the possibility of axial movement. 3. Spray gun pop. 1, characterized in that the annular cavity of the filling nozzle is in communication with the air supply channel through an outlet pipe with an adjustment valve.