Rotary type electrostatic spray painting device

Details Rotary type electrostatic spray painting device Rotary type electrostatic spray painting device

1980-10-22

1982-11-23

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Electrostatic type

With impeller

239223, 308 9, 308DIG1, B05B 504, F16C 704, F16C 1710

Patent

active

043601650

ABSTRACT:
A rotary type electrostatic spray painting device comprising a rotary shaft and a spray head fixed onto the front end of the rotary shaft. Paint is fed onto the cup shaped inner wall of the spray head. The rotary shaft is supported by a single thrust air bearing and a pair of radial air bearings. The thrust air bearing comprises a stationary annular plate and a pair of runners fixed onto the rotary shaft and arranged on each side of the annular plate. Each of the side walls of the annular plate comprises a central wall region facing the corresponding runner, and a peripheral wall region located radially outwardly from the runners. A plurality of air outflow bores is formed on the side walls of the annular plate in the central wall region for feeding air into the clearance between the annular plate and the runners. A plurality of pressure balancing bores are formed in the annular plate and arranged in the peripheral wall region. An electrode, continuously contacting the rear end of the rotary shaft, is provided. A negative high voltage is applied to the housing of the paint device. In addition, the negative high voltage is also applied to the spray head via the electrode and the rotary shaft.

REFERENCES:
patent: 2449297 (1948-09-01), Hoffer
patent: 3985405 (1976-10-01), Okano et al.
patent: 4007974 (1977-02-01), Huber

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