Patent EP-2354100-A2 (EP)
Inventor: HAIDER REINHOLD
IPC: C02F11/125
Filed: 2010-12-21
Abstract: The plant comprises a sieve box, from which a vertical screw conveyor (4) guides to a pressing device with a discharge, into a horizontal wastewater pipeline (1). A pelleting press (5) is arranged as pressing device with the pressing elements (13) at the upper end of the screw conveyor, where the pressing elements are arranged in the pelleting press. The pelleting press has a cylindrical perforated sheath, where the pressing elements are cylindrical press rollers rolling on their surface in the interior of the sieve sheath (12). The pelleting press has truncated-cone shaped perforated sheath. The plant comprises a sieve box, from which a vertical screw conveyor (4) guides to a pressing device with a discharge, into a horizontal wastewater pipeline (1). A pelleting press (5) is arranged as pressing device with the pressing elements (13) at the upper end of the screw conveyor, where the pressing elements are arranged in the pelleting press. The pelleting press has a cylindrical perforated sheath, where the pressing elements are cylindrical press rollers rolling on their surface in the interior of the sieve sheath (12). The pelleting press has a truncated-cone shaped perforated sheath, where the pressing elements are truncated-cone shaped press rollers rolling on their surface in the interior of the sieve sheath. The truncated-cone shaped perforated sheath upwardly or downwardly expands in a conical manner. The cylindrical perforated sheath and/or the truncated-cone shaped perforated sheath are directly placed on the upper end of a housing of the screw conveyor, where an inner space of the screw conveyor directly merges into the interior of the pelleting press. One to three pressing rollers are optionally, removably or exchangeably provided in the pelleting press. The axes of the conveyor screw and the pelleting press are directly coupled with one another over an intermediate gear such a planetary gear. The conveyor screw and the pelleting press are drivable independent of each other. A drive engine for the pelleting press is coupled with the axis of the pelleting press over a gear with variable gear transmission ratio. The pressing rollers lie on the perforated sheath of the pelleting press under spring tension. An abutment of the conveyor screw turned towards the conveyor screw is kept by struts radially running from the sheath, where the edges of the struts turned towards the conveyor screw are formed in a cutting-like manner. A cutting edge or cutting bar is provided at the end of the conveyor screw turned towards the pelleting press and cooperates with the cutting-like edges of the struts. The radial struts of the abutment turned towards the conveyor screw are propeller-like obliquely placed flat steels, The abutment turned towards the conveyor screw are propeller-like obliquely placed flat steels, at whose sides of an adjustable and interchangeable meshing blade facing the conveyor screw are arranged with the blade of the conveyor screw. A distance, in which thorn-like projections of the conveyor screw protrude, is kept free between the lower end of the conveyor screw and the base of the screw housing. The base of the screw housing is partially or completely provided with a permanent magnet. An in-wall opening is arranged in the area of the base or the adjacent wall of the screw housing.