Development of an Inclined Rotary Sand Sieving Machine

This Paper presents the details of the fabrication and testing of a rotary sand sieving machine suitable for sand grain size analysis in the foundry industry. It consists of a sieve train mounted on the upper of the frames, which is agitated by means of two pillow bearing connected by a mild steel shaft that produce rotary motion of the sieves. Several fabrication techniques such as welding, machining, grinding, painting etc. are adopted for the fabrication of the machine. Dry clay-free sand sample was tested with the machine for operational effectiveness. The result shows that the machine is suitable for sieving sand grain size to 1.0mm but cannot sieve to lower diameter of sand such as 0.1 mm. The fabricated mechanical sieve performed well with high sieving efficiency, reliability, and durability. The maximum sand size is 1 mm. The particle sieving efficiency is approximately 82.75%.