Abstract: A method and a device for drying machine parts, e.g. balls or rolls for roller bearings, upon washing the parts in a washing liquid containing a solvent, especially a polluting solvent. Upon washing, the wet parts are fed into a chamber, and a dry, hot gas is injected into the chamber and evacuated therefrom. The evacuated humid gas is recirculated in a circuit and, upon being compressed and cooled, the gas is freed from its solvent contents in a liquid separator and is heated before re-injection into the chamber. A reduced gas pressure is maintained in the chamber by controlling the gas flow in the recirculation circuit, and the gas in the chamber is cooled, so that the partial pressure of the solvent in the chamber is substantially reduced.

Abstract: A method and a device for controlling the flow through a distillation apparatus for separating components of a mixture, particularly a dissolved substance, such as an oil, a wax, a polishing agent or alike, from a liquid mixture, particlularly containing a chlorinated solvent, such as tri- or perchlorethylene. According to the present invention, the feeding of new liquid mixture or solution into the boiling vessel of the distillation apparatus is controlled in response to the liquid level in the boiling vessel, whereas the draining of substance-enriched liquid or separated substance from the boiling vessel is controlled in response to the distillation temperature, or to a variable being co-variant therewith, so as to maintain the distillation temperature within predetermined limits and the flow through the apparatus at an optimal, high level.

Abstract: A device for washing machine parts, e.g. balls or rolls for roller bearings, having finely finished spherical or cylindrical outer surfaces, in connection with the manufacture thereof. The machine parts are fed one after the other through a washing chamber being axially symmetrical to the feed direction, a solvent being injected under pressure into the chamber in such a direction that the solvent flows with a rotational velocity component around the feed direction and strikes the finely worked surfaces of the machine part at a small angle but with great power, whereby contaminants being soluble in the solvent as well as other contaminants being bound to the surface are effectively removed therefrom.