CLEANING OF INNER SURFACES OF DIELECTRIC ARTICLES Russian patent published in 2015 - IPC H01J9/38 B08B9/27 

FIELD: process engineering.

SUBSTANCE: invention relates to cleaning of surfaces of various dielectric articles, in particular, lab hardware in food and medical industry, that is, wherein the results depends on initial surface cleanness. Proposed method consists in placing the portion of ferromagnetic powder of spherical bodies of 30-60 mcm size inside article to be cleaned. Then, cleaning device is fed to article outer surface and consists of hollow pipe of dielectric materials with blind end. It incorporates permanent magnet to develop local permanent field at the point of contact with article surface. Said magnetic field collects and retains ferromagnetic powder on article inner surface to bring definite pressure at said surface. Then, this article is filled with water to manipulate the cleaning device end with permanent magnet over the entire outer surface to displace ferromagnetic powder bundle over the entire inner surface, hence, to clean the latter. Ferromagnetic powder pressure acting at inner surface is adjusted by varying the distance between permanent magnet and ferromagnetic powder.

EFFECT: simplified cleaning, higher quality of cleaning.

1 dwg