Patent Number: 6,637,598

Title: Foreign substance eliminating apparatus

Abstract: A foreign substance eliminating apparatus transfers raw material by passing the raw material between an upstream conveyor (6) and a downstream conveyor (8), and detects a foreign substance on the upstream transfer conveyor with a foreign substance detector (9). An eliminating airflow (R) is ejected from a row of air nozzles (13) when the detected foreign substance falls down, and deflects the falling direction of the foreign substance. At this point, a small foreign substance (B.sub.S) is blown off by the eliminating airflow, and sent to the foreign substancereceiving box (16). On the other hand, a large foreign substance (B.sub.L) goes across the eliminating airflow, and falls down onto the bar screen conveyor (20). The bar screen conveyor captures the large foreign substance, and removes it outside of the conveyor.

Inventors: Takai; Yoshio (Tochigi, JP), Watanabe; Shigeru (Tochigi, JP), Watanabe; Hironori (Tochigi, JP), Kan; Katsuhiko (Tokyo, JP), Kudo; Shinichi (Fukushima, JP)

Assignee: Japan Tobacco Inc.

International Classification: B07C 5/342 (20060101); B07B 4/02 (20060101); B07C 5/36 (20060101); B07B 4/00 (20060101); B07C 005/02 ()

Expiration Date: 10/28/2020