ROTARY TYPE GAS AGITATOR OF ANAEROBIC DIGESTER

摘要

To provide a rotary type apparatus for agitating gas of anaerobic digester, wherein the apparatus has a simple structure and excellent agitation effect of digester sludge, prevents leakage of digestion gas and is installed on an existing anaerobic digester with a small opening and easily maintained, managed and installed. The rotary type apparatus for agitating gas of anaerobic digester comprises: a gas cutoff cylinder(1) connected from the vicinity under the surface of water in the digester to the upper surface of the digester in a central part of the anaerobic digester; a sealed flange(3) assembled in a sealed structure on the gas cutoff cylinder, a positive flange pipe(3-1) integrally formed on the sealed flange to function as an entrance of digestion gas from the outside; a vertical connection pipe(4) connected to a predetermined depth perpendicularly to a lower part of the positive flange pipe of the sealed flange; a rotary supporting pipe(5) connected to the lower side of the vertical connection pipe; a rotary gas cylinder(8) which is supported to the rotary supporting pipe such that the rotary gas cylinder is freely rotated by a rotary supporting bearing(9), of which position is vertically fixed, and a lower part of which is sealed by a rotary gas cylinder cover(12); connection flange single pipes(14) horizontally and integrally formed on the rotary gas cylinder such that the connection flange single pipes are symmetrical side to side; a flexible pipe(15) connected to the connection flange single pipes such that the flexible pipe is freely bent, and a rotary gas ejection pipe(17) connected to the flexible pipe; a hinge unit(16) which connects the connection flange single pipes and the rotary gas ejection pipe such that the hinge unit is freely rotated from the vertically lower side to a horizontal position, and the hinge unit maintains stiffness in a rotating side surface direction; a support(11) for limiting position of the rotary gas ejection pipe such that the rotary gas ejection pipe is not further lowered by preventing the rotary gas ejection pipe from exceeding a predetermined angle; a buoyancy(18) integrally formed at a predetermined position of the rotary gas ejection pipe; and an ejection port for rotation(17-3) formed in a direction opposite to a rotary direction at an end part of the rotary gas ejection pipe, and an ejection port for lifting and lowering(17-1) formed at a predetermined position at the inner side of the end part of the rotary gas ejection pipe.