Device for dehumidifying and compacting solids contained in sewage for disposal
The device for dehumidifying and compacting solids contained in sewage for disposal, is designed to be applicable to machinery ( 1 ) comprising: a tubular screen ( 2 ) having at least an inlet ( 4 ) for a product to be separated, at least an outlet ( 5 ) for a separated solid part, and at least a filtering wall ( 3 ) through which the separated liquid part exits; a transport organ ( 7 ) predisposed internally of the screen ( 2 ) for transporting the solid part to be compacted towards the outlet ( 5 ). The device comprises a contrast element ( 9 ), predisposed at the outlet ( 5 ) for interacting contactingly with the product, which in a rest position thereof occupies at least a part of a mouth of the outlet ( 5 ) and which, under an effect of a pushing action of the product to be compacted, can elastically deform in order to increase a size of a free mouth of the outlet.
1. A device for dehumidifying and compacting solids contained in sewage for disposal, of a type to be applied to machinery ( 1 ), which machinery ( 1 ) comprises: a tubular screen ( 2 ) having at least an inlet ( 4 ) for a product to be separated and at least an outlet ( 5 ) for a separated solid part thereof, a liquid part thereof exiting from at least a filtering wall ( 3 ) of the screen ( 2 ); a transport organ ( 7 ) predisposed internally of the screen ( 2 ) for transporting the solid part to be compacted towards the outlet ( 5 ); wherein the device for dehumidifying comprises a contrast element ( 9 ), predisposed at the outlet ( 5 ) for interacting contactingly with the product, which contrast element ( 9 ), in a rest position thereof, occupies at least a part of a mouth of the outlet ( 5 ) and which contrast element ( 9 ), under an effect of a pushing force of the product to be compacted, can elastically deform in order to increase a size of a free mouth of the outlet, the contrast element comprising a flat surface, solidly connected to the machinery ( 1 ) at a position in which the flat surface occupies at least a part of the outlet mouth of the outlet ( 5 ), constituted by elements ( 11 a, b ) which develop from a periphery of the outlet mouth of the outlet ( 5 ) towards a centre of the outlet mouth, wherein the flat surface comprises main elements ( 11 a ) having a predetermined degree of elasticity, alternated with intermediate elements ( 11 b ), having a degree of elasticity which is different to the degree of elasticity of the main elements ( 11 a ).
2. The device of claim 1 , wherein: the intermediate elements ( 11 b ) are constituted by cuts which develop from the periphery of the outlet mouth of the outlet ( 5 ) towards the centre thereof; the main elements ( 11 a ) are tapered towards the centre of the outlet mouth of the outlet ( 5 ) and, in the rest position thereof, are side-by-side and subdivided by cuts ( 11 b ).
3. The device of claim 1 , wherein the main elements ( 11 a ) are made of a plastic material.
4. The device of claim 1 , wherein the main elements ( 11 a ) are made of a plastic material and contain metal plates internally thereof.
5. A machine for dehumidifying and compacting solids contained in sewage for disposal, said machine having an outlet mouth ( 5 ) which is circular, said machine having a contrast element ( 9 ) which comprises a flat surface which is shaped as a circular crown, solidly connected to the machinery ( 1 ) in such a position as to occupy a circular crown of the outlet mouth ( 5 ); wherein the contrast element ( 9 ) comprises main elements ( 11 a ) which develop from the periphery of the outlet mouth ( 5 ) towards the centre thereof, the main elements ( 11 a ) having a predetermined degree of elasticity and being alternated with intermediate elements ( 11 b ) which are constituted by cuts developing from the periphery of the outlet mouth ( 5 ) towards the centre thereof; the main elements ( 11 a ) being tapered in a direction going towards the centre of the outlet mouth ( 5 ) and, in the rest position of the contrast element ( 9 ), being arranged side-by-side in order to define the circular crown; the main elements ( 11 a ) being made of a plastic material and containing metal plates internally thereof.