Machine for reclaiming used foundry sand - utilising vibration for mutual abrasion of lumps of sand followed by sieving

摘要

Appts. for the recovery of used foundry sand has a chamber which can be closed and fitted with a sand inlet on one side; the base of the chamber slopes upwards towards an outlet leading to a sieve and two separate exits are provided, one below the sieve and the other at the side of the upper part of the sieve; the chamber is located on a mounting which permits the chamber to vibrate and vibration devices are provided so that the lumps of sand abrade each other and are reduced in size as they travel upwards towards the outlet and the re-usable sand is obtd. from the exit below the sieve. A high proportion of the use sand is recovered, thus reducing foundry costs and any metal scrap or metal cores present in the sand can also be obtd. from the separate exit.