Abrégé

A horizontal rotary drum in which the materials to be treated are introduced through a feed hopper together with a water flow admitted through treatment nozzles so as to form a suspension of water and materials is described. The horizontal rotary drum has inclined paddles that move forward the heavy materials deposited on the bottom of the drum towards an exit end where an extractor conveys them towards concentric screening means, a stop ring being arranged transversally inside the drum so as to leave only a peripheral annular passage having a height lower than the level of the suspension of water and materials present on the bottom of the drum so as to stop the lighter organic contaminants that are in the upper part of the suspension. Means for slightly inclining the axis of the rotary drum within a small angular interval, as well as with clod-breaking teeth for treating clayey materials are also described.

Classes IPC  ?

• B08B 3/04 - Nettoyage impliquant le contact avec un liquide
• B08B 3/02 - Nettoyage par la force de jets ou de pulvérisations
• B09C 1/02 - Extraction au moyen de liquides, p. ex. lavage, lixiviation
• B08B 3/06 - Nettoyage impliquant le contact avec un liquide utilisant des tambours perforés dans lesquels est placé l'objet ou le matériau
• B03B 5/56 - Classificateurs du type à tambour
• B07B 1/24 - Tambours tournants avec agitateurs intérieurs fixes ou mobiles

Abrégé

A washer comprises a horizontal rotary drum (1) in which the materials to be treated are introduced through a feed hopper (12) together with a water flow admitted through treatment nozzles so as to form a suspension of water and materials, inside the drum (1) there being arranged inclined paddles (2) that move forward the heavy materials deposited on the bottom of the drum (1) towards an exit end where an extractor (3) conveys them towards concentric screening means, a stop ring (10) being arranged transversally inside the drum (1) so as to leave only a peripheral annular passage having a height lower than the level of the suspension of water and materials present on the bottom of the drum (1) so as to stop the lighter organic contaminants that are in the upper part of the suspension. The machine can further be provided with means for slightly inclining the axis of the rotary drum (1) within a small angular interval (α), as well as with clod-breaking teeth for treating clayey materials.

Classes IPC  ?

• B07B 1/24 - Tambours tournants avec agitateurs intérieurs fixes ou mobiles
• B08B 3/04 - Nettoyage impliquant le contact avec un liquide
• B09C 1/02 - Extraction au moyen de liquides, p. ex. lavage, lixiviation
• B03B 5/56 - Classificateurs du type à tambour
• B03B 9/06 - Disposition générale d'un atelier de séparation, p. ex. schéma opératoire spécialement adapté aux ordures