LIQUID FEED DEVICE UNDER PRESSURE Russian patent published in 2017 - IPC B05B7/24 B05B11/04 

FIELD: machine engineering.

SUBSTANCE: invention relates to the liquid feed devices delivering sprayed liquids, such as paint, to the spray devices, such as spray guns, and can be used in many industries. The fed liquid reservoir to be used with the inlet port of the spray gun has a flexible outer casing having the first layer and the inlet port through it. The reservoir has also a flexible inner casing located within the outer one. The inner casing has the second layer and forms a fed liquid chamber and a hole for liquid. Moreover, the reservoir has an injection zone located between the outer surface of the inner casing and the inner surface of the outer casing. The hole for liquid is in fluid communication with the fed liquid chamber after connection with the inlet port of the spray gun. Applying pressure from the external source to the inlet port in the injection zone, the pressure is applied thus displacing fluid from the fed liquid chamber through the hole for fluid. A liquid feed device has a fed liquid reservoir and an air feeder. The liquid feed method to the spray gun consists of the installation of the fed liquid reservoir and the assembly of the fed liquid reservoir with the spray gun.

EFFECT: ability to confirm visually the pressure increase in the system and the reduction of the container size is enhanced.

20 cl, 7 dwg