Filter assembly for electrochemical machining apparatus

Details Filter assembly for electrochemical machining apparatus Filter assembly for electrochemical machining apparatus

1976-10-26

1977-08-09

Mack, John H.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204238, 204276, 210307, 210323R, C25D 1700, C25D 2106, B01D 2326, B01D 2910

Patent

active

040409333

ABSTRACT:
An improved filter assembly is advantageously utilized in association with an apparatus which electrolytically removes material from a workpiece. The apparatus includes one or more nozzles each of which tapers from a relatively large inside diameter to a relatively small inside diameter to direct a flow of electrolyte toward a workpiece. The improved filter assembly is utilized to remove particles from the electrolyte before it is conducted to the nozzles. The filter assembly includes a housing which is divided into an inlet chamber and an outlet chamber by a transverse wall. A plurality of tubes extend through the wall and are effective to conduct electrolyte from the inlet chamber to the outlet chamber along a plurality of spaced apart flow paths. Each of these tubes has an inlet end portion with a cross sectional area which is less than the minimum cross sectional area of each of the nozzles. Therefore, particles which are capable of clogging the nozzles are blocked at the inlet end portions of the tubes and cannot flow through the tubes to the nozzles. Although the filter assembly is particularly well adapted for use in association with an apparatus which electrolytically removes material from a workpiece, it is contemplated that the filter assembly may be utilized with other types of apparatus to remove particles from a flow of liquid.

REFERENCES:
patent: 3239438 (1966-03-01), Vorrhees
patent: 3449226 (1969-06-01), Williams
patent: 3574082 (1971-04-01), Andrews et al.

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