Proceeding and apparatus for cooling, drying and separating castings and foundry sand in a cooling device

US4209055A · kind A · utility

Inventor

• Eugen Buhler · Thannhausen, DE

Key dates

• Filing date: Nov 20, 1978
• Grant date: Jun 24, 1980
• Expiry date: Nov 20, 1998

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22C5/085
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

There is proposed herein a method and apparatus for cooling, drying and separating casting pieces and molding sand and wherein the apparatus includes an opening that extends lengthwise therethrough, the cooling operation being conducted by inducting air in a rotary drum that is contiguous to a first rotary chamber that is in juxtaposition relative to a stationary chamber. The sand is caused to pass through perforated areas within the apparatus while the casting pieces continue through the axial opening in the stationary chamber. A perforated divider wall disposed between the first rotary chamber and the stationary chamber permits passage of sand to a discharge valve and vents air to atmosphere. In a further embodiment of the invention a polygonal sieve is disposed between the rotary chamber and the stationary chamber, said sieve being a truncated pyramid and provided with guide foils.