SU1237258A1 - Pneumatic sprayer - Google Patents

Description

1237258 2. Sprayer according to Claim. 1, m which is mounted in the injection branch

due to the fact that, in order to expand the technological capabilities of the device, a non-return valve, accelerated the air supply to the tank, and the waking sleep of the adjusting valve.

I

The invention relates to a device for spraying liquids and can be used for pneumatic injection of liquids, suspensions and anti-corrosion compounds on the surface of products and equipment.

The aim of the invention is to increase the reliability of the sprayer.

FIG. 1 shows a pneumatic nebulizer; in fig. 2 - node I in FIG. 1; FIG. 3 is a section A-A in FIG. one.

The pneumatic atomizer comprises a housing 1 with a handle 2, a control trigger 3 and a tank 4 with a nozzle 5 for feeding material.

In the case 1, an ejek1 is installed; an ionic nozzle 6 with a bite-filling 7. In the handle 2, the compressed air supply channel 8 and the air valve 9 are completed, 1 interaction through the hollow rod 10 with the triggers 3,

The housing 1 has a material supply channel 11 to the nozzle 6, communicating with the nozzle 5 of the tank 4, the air supply channel 12 to the ejection nozzle 6, and the air supply channel 13 to the tank 4. The channels 12 and 13 communicate through the air valve 9 with the compressed supply channel 8 air and through the cavity 14 in the stock 10 - with the atmosphere. The trigger 3 has a platform 15, facing the end of the rod 10. The channel 13 of the air supply to the tank 4 is made forked in the form of pressure 16 and exhaust 17 branches. A valve 18 is installed in the outgoing branch 17, and a valve 19 with a spring 20 and an adjusting screw 21 is installed in the discharge branch 16. The pneumatic atomizer works as follows.

When turning on the puller by pulling the trigger 3, the pad 15 presses against the end of the stem 10 and closes the air outlet from the tank 4 to the atmosphere. With a further turn of the trigger, the stem 10

8 set in the discharge branch

air supply channel in the tank, equipped with an adjustment.

moves the air valve 9 and compresses the compressed air supply channel 8 with the air supply channel 12 to the ejection nozzle 6 and the air supply channel 13 to the tank 4 through the pressure branch 16 and the spring-loaded valve 19.

Under the pressure of air in the upper part of the tank 4 and the vacuum in the zone of the air outlet from the nozzle 6, material from the tank 4 is sucked in through the nozzle 5 into the channel 11. When leaving the channel 11, the material is sprayed with an air jet leaving the nozzle 6 and the aerosol is generated sent through raspyvayuschee nozzles 7 on the surface of the workpiece. When the spray gun is turned off by releasing the trigger 3, a spring-loaded valve 9 closes the compressed air supply channel 8, the pad 15 moves away from the end of the rod 10 and opens the air outlet from the tank to the atmosphere through the outflow branch 17 of the channel 13 and the valve 18.

The air pressure in the tank 4 and the area of the nozzle 6 is equalized, and the supply of material for spraying is stopped. The air pressure in the tank is controlled by adjusting the screw 21 by compressing or loosening the spring 20.

The presence of a spring-loaded non-return valve in the discharge branch 16 of the air supply to the tank 4 provides the necessary pressure drop and a steady supply of material for spraying, which improves the quality of the coating. The presence of a check valve in the outlet branch 17 of the channel 13 provides a quick release of air pressure in the tank 4, which eliminates the flow of material into the soft nozzle when the supply of compressed air to the ejection nozzle is stopped, which also improves the quality of the coating.

Equipping a spring-loaded non-return valve in the discharge branch 16 of channel 13 with an adjusting screw 21 allows you to set the optimum value of air pressure drop

12372584

in the tank, depending on the viscosity of the sprayed material.

The application of the invention makes it possible to improve the quality of the applied coating when using the pie nomenclature of coating materials of various viscosities.

12

eight

Fig

/ 1- / h

.З

Editor I.Rybchenko

Compiled by G. Djov

Tehred L. Serdyukova Proofreader M. Maksimishinets

Order 3223/9 Circulation 681 Subscription

VNIIPI USSR State Committee for Inventions and Discoveries 4/5, Moscow, Zh-35, Raushsk nab. 113035

Production and printing company, Uzhgorod, Projecto st., 4

Claims (2)

1. PNEUMATIC SPRAY, comprising a housing with a handle, a control trigger, a tank with a nozzle for feeding material, an ejection nozzle with a sawing nozzle, a compressed air supply channel and an air valve connected to the trigger, and a material supply channel to the nozzle made in the housing; communicated with the nozzle of the tank and the air supply channels to the ejection nozzle and the tank communicated through the air valve with the compressed air supply channel and with the atmosphere, characterized in that, in order to improve the quality of the coating, the supply channel the air in the tank is made bifurcated in the form of the discharge and exhaust branches with check valves counterclockwise installed in the branches of the channel, and the valve installed in the discharge branch is spring-loaded. yu m oo oo> 2. Sprayer according to π. 1, characterized in that, in order to expand the technological capabilities of the atomizer, the check valve installed in the discharge branch of the air supply channel into the tank is equipped with an adjustment screw.