BAR SCREEN DEVICE

PROBLEM TO BE SOLVED: To provide a bar screen device, in which the fluid resistance of a flow path is hard to rise and which has sufficient rubbish collection capacity. SOLUTION: The first bar screen 10 is composed of a plurality of the first flat bars 11 arranged at regular intervals in the direction orthogonal to the flow direction of a fluid. The second bar screen 20 is arranged on the downstream side of the flow of the fluid to the first bar screen 10, and consists of a plurality of the second flat bars 21. The first flat bar 11 and the second flat bar 21 are disposed at the same intervals, and arranged so that phase is displaced mutually at 180 deg.. The first and second flat bars 11 and 21 are disposed zigzag so that end sections on the downstream sides of the first flat bars 11 and end sections on the upstream sides of the second flat bars 21 are arranged on approximately the same surface. The first bar screen 10 is divided into upper and lower sections, upper sections can be slid vertically as movable screens 10a and lower sections are formed in a fixed type together with the second bar screen 20 as fixed screens 10b.