A bread conveying apparatus includes a flight conveyer including a first flight for urging a bread, an endless revolving member on which the first flight is mounted, and a driving member and a driven member, the endless revolving member being wound around the driving member and driven member, a rail extending along a conveying path of the bread and supporting the first flight, and a rail size setting unit for setting a length of the rail with respect to an extending direction of the conveying path. The length of the rail with respect to the conveying direction is set by the rail size setting unit based on a size of the bread.

A non-metallic conveyor chain having improved durability as a conveyor chain for a sludge collector, the conveyor chain including a plurality of unit chains and chain pins with which the unit chains are linked to each other, wherein each of the unit chains is provided at one side thereof with a barrel and at the other side thereof with a yoke. The barrel of the unit chain is formed on an outer surface thereof with a chain pocket having a groove structure, and the yoke of the unit chain is formed on an inner surface thereof with a chain boss protruding so as to correspond to the chain pocket of the unit chain to which the chain boss is to be linked.