Process for application of free-flowing material on the inner su

Details Process for application of free-flowing material on the inner su Process for application of free-flowing material on the inner su

1987-06-26

1988-12-13

Beck, Shrive

Coating apparatus

Projection or spray type

Inside of hollow work

427181, 427236, 239400, 239403, B05B 102

Patent

active

047902639

ABSTRACT:
The material is applied to the inner surface by means of a carrier gas stream, provided with a swirl, conducted through the hollow space. To prevent or reduce the swirl loss, which occurs if the laden carrier gas stream, provided with the swirl, forces the stagnant air in the hollow space from this space and then the loss develops by friction on the inner surface, before and during the flow of the laden carrier gas provided with the swirl, an additional gas, not laden with the material, is conducted through the hollow space with a siwrl, whose direction of rotation corresponds to the swirl of the laden carrier gas stream. For this purpose, the device has on the outlet of a passage element (1), equipped with a swirl-producing device 3 for the laden carrier gas stream, outlet nozzles (4), which feed to the laden carrier gas stream the additional gas with a swirl, whose direction of rotation corresponds to that (5) of the swirl-producing device.

REFERENCES:
patent: 679756 (1901-08-01), Kennedy
patent: 998762 (1911-07-01), Faller
patent: 4055025 (1977-10-01), Seese et al.
patent: 4090666 (1978-05-01), Peck
patent: 4452169 (1984-06-01), Matsuda
patent: 4454173 (1984-06-01), Koga
patent: 4668534 (1987-05-01), Gray

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