JPS6443313A - Upper guide rail of sludge scraper - Google Patents

Abstract

PURPOSE:To make a structure simple and to surely prevent the loose side of a conveyor from being detached from a driving sprocket by downward curving the end part of the driving sprocket side on an upper guide rail. CONSTITUTION:An endless conveyor 8 fitted with scraping plates 10 is arranged along the bottom face, the upper face and both end parts of a water tank 1 and a driving sprocket 4 is provided to one end part of the upper part of the water tank so that the conveyor 8 is moved to the direction of the other end. Furthermore, an upper guide rail 13 by which the end part of the driving sprocket 4 side is curved downward is provided to the upper part in the water tank to support the lower part of the conveyor 8. Thereby, even when the conveyor of the loose side just after having been fed from the driving sprocket is made to a tension state from a state hung downward and starts to be rocked upward, rapid rocking upward is inhibited by receiving the resistance of water in the water tank and therefore the loose side of the conveyor can be surely prevented from being detached from the driving sprocket.