SU787100A1 - Pneumatic paint sprayer - Google Patents

Description

one

The invention relates to devices for spraying paint with compressed air and is intended for use in many industries in the field of painting.

A spray gun for painting hard-to-reach places is known, containing a housing, a paint duct, an air duct, a nozzle head with a lateral deflection, a nozzle, and a mechanism for turning the nozzle head 1.

A disadvantage of this device is the narrow scope (it is intended only for painting products with a deflected torch), the impossibility of obtaining a straight wide or narrow and long torch.

Closest to the proposed is a pneumatic paint sprayer containing a housing with paint and air ducts, a locking needle and a spray head with a central air cavity and nozzle and an annular air cavity connected to the side air nozzles 2.

A disadvantage of this device is also a limited scope.

and the possibility of obtaining with it only a flat straight torch.

The purpose of the invention is to provide the possibility of obtaining a torch of various shapes and directions.

5 To achieve this goal, a pneumatic spray gun comprising a body with paint and air ducts, a stop needle and a spray head with a central air cavity and nozzle, and an annular air cavity communicated

10 with lateral air nozzles, is provided with a hollow ring with an inclining nozzle mounted around the spray head, which can be rotated around an axis, mounted at an angle to the axis of the head, on the end part of which is facing the body,

 an additional annular cavity communicated with the hollow ring and a notch communicating with the central air cavity, and located in the outlet part of the spray head

20 evenly around the central air nozzle channels communicated with the central air cavity.

FIG. 1 shows a device, a longitudinal section; in fig. 2 - section aa

in fig. one; in fig. 3 shows a section BB in FIG. 2; in fig. 4 is a view of B in FIG. one.

Pneumatic paint sprayer includes a housing 1 with channels 2 and 3 for paint and air respectively, a locking needle 4, a tank 5 for paint and a spray head 6 with a central air cavity 7 and a central nozzle 8. The output part of the head b is uniformly around the central nozzle 8 9 communicated with the central air cavity. An annular air cavity 10, communicated with side air nozzles I, and an additional annular cavity 12, communicated by channel 13 with a hollow ring 14 surrounding the spray head 6, can be rotated around an axis. A deflecting nozzle 15 is mounted on the hollow ring 14. On the front part of the head 6, a recess 16 is provided, communicating with the central air cavity 7. The annular cavities 10 and 12 are connected with holes with the central cavity 7. The trigger 17 interacts with the locking needle 4 and the air valve 18 installed in the air supply duct 19 into the housing 1. In the housing 1 there is also a channel 20 for supplying paint to the head 6 from the paint supply system. The locking needle 4 is spring-loaded and is equipped with a conius screw 21 to adjust the ink supply. Flame shape indicators are installed on the spray head 6, which are installed against the risks on the sprayer housing (not shown), which allows, without preliminary testing, to determine the shape and size of the torch in accordance with the requirements of the technological process.

Paint sprayer works as follows.

When the trigger 17 is pressed, the air valve 18 opens and the air flows through the channels 19 and 3 into the spray head 6. When the trigger 17 is further pressed, the needle 4 moves off, opens an opening for paint to flow from the tank 5 into the channel 2 of the housing 1 to the spray head 6 (or from channel 20) and paint is sprayed onto the product. The presence in the spray head of cavities 10, 12 and 7, communicating with the corresponding air nozzles, allows to obtain flares of different shapes, sizes and directions, which makes it possible to choose the most rational of them for a given consistency.

paintwork material and type of work.

The various nozzles are put into operation by turning the nozzles of the head b and the hollow ring 14.

When the channel 3 communicates with the annular cavity 12, air enters the diverting nozzle 15 as well as the central nozzle 8, and a round plume is deflected in any direction when the ring 14 is rotated.

When channel 3 communicates with the annular cavity 10, air enters the side nozzles 11 and a flat torch is obtained, the track of which can be oriented in a plane perpendicular to the axis of the torch in any direction.

When channel 3 communicates with recess 16, air enters cavity 7, central channel 8 and channels 9, and a narrow and long spray plume is obtained.

This device is convenient to use and allows you to color various surfaces of products, including hard-to-reach places, narrow walls, and surfaces of products welded at an angle.

Claims (2)

1. USSR Author's Certificate No. 375102, cl. B 05 B 15/08, 1971. 2. The patent of Germany No. 883880, cl. 85 DZ, 1953 (prototype). /; YU fpue.2