Patent EP-2213720-A1 (EP)
Inventor: NIEDERBACHER MICHAEL DR
IPC: C12M1/02
Filed: 2009-01-28
Abstract: The biogas plant comprises a submerged agitating device (14) guidable in a fermentation container on a stand pipe with a sliding part (13) in height-adjustable manner, and a positioning device, which has a linear-structure-element extending itself parallel to stand pipe over the actuation paths, and a further linear-structure-element on the sliding part. The positioning device is height-adjustable through a motoric or manual relative movement between the linear-structure-element and the structure-intrusion-element together with the slide part. The biogas plant comprises a submerged agitating device (14) guidable in a fermentation container on a stand pipe with a sliding part (13) in height-adjustable manner, and a positioning device, which has a linear-structure-element extending itself parallel to stand pipe over the actuation paths, and a further linear-structure-element on the sliding part. The positioning device is height-adjustable through a motoric or manual relative movement between the linear-structure-element and the structure-intrusion-element together with the slide part and the agitating device along the linear-structure-element and the stand pipe. The linear-structure-element is a spindle (17) and the structure-intrusion-element is a spindle nut. The spindle is movably arranged at a spindle-foot point and at a spindle-head part and a manual and/or motoric spindle-rotation drive is arranged on spindle-head part. The spindle nut is rotatably arranged on the sliding part. A motoric spindle rotation drive is arranged within or external of the gas area of the fermentation container at the stand pipe. The spindle is arranged in rotationally fixed manner and the spindle screw is arranged in rotationally movable manner with a hydraulic motor at the sliding part. Two spindle screws are mounted against each other on the sliding part in a height-staggered manner. The linear-structure-element is a rack that is arranged on the stand pipe. The structure-intrusion-element is a motoric gear wheel drivable on the sliding part. The stand pipe is pivotably arranged as rectangle- or square tube at stand pipe foot point on container base and on a stand tube head part around its vertical axis. The linear-structure-element is arranged as spindle or gear rack at stand pipe. A manual and/or motoric stand pipe-pivot drive is arranged on stand pipe-head part and is arranged as hydraulic motor internal or external of the gas area of the fermentation container. The stand pipe-pivot drive comprises a chain drive or screw drive at the stand pipe head part. The foot point of the linear-structure-element is arranged as spindle or rack at the stand pipe against the container base. The hydraulic tube for hydraulic submersible motor of the agitating device and if necessary further drive are guided on sliding part in the container. The hydraulic tube is fixed to height-adjustable stopper element (25). A horizontal platform towering in the container area is arranged by a top edge of the container side wall. A film roof, which covers the container, is connected on the edge side of the platform over the container area. A support frame stand is mounted over a platform opening. The stand pipe is supported with its stand pipe-head part and/or a stand-pipe swiveling drive on the support frame stand and the support frame part is covered by a gas-tight hood part. The relative movement is detected for determining the height position and if necessary the pivoting position of the agitating device. The number of revolutions of drive motor or the rotationally driven part to position determination is detected by a revolution counter and if necessary corresponding position signals are brought as actual-signal to control- and regulation device.