Device for separation and transport of waste material from polluted liquid

A device for the separation and transport of material from polluted liquid medium, comprising

• a support structure;
• a grate mounted in the support structure and comprising a series of stable and adjustable rods, every other rod in the gate of respective stable and adjustable rods being joined together to form a respective unit, and wherein the edges of the rods include three wave-shaped shelves turned against the direction of flow of the medium;
• a first shelf provided to the grate;
• a second shelf provided to the grate;
• a third shelf provided to the grate, where the first shelf is positioned at the bottom of the grate just under a surface level of the medium, and the second shelf and the third shelf are arranged at the top of the grate, with the second shelf mounted at about the surface level of the medium;
• a rail mounted in the support structure and disposed above the grate;
• a first wheel;
• a trolley supporting the first wheel and being attached to the rail with the first wheel running along the rail;
• a piston suspended in the trolley and said piston to be driven up and down, wherein the adjustable rod unit is attached to the piston;
• four two-track steerings positioned at the support structure grate, each said two track steering including a stop;
• a second wheel attached to the adjustable rod unit for performing a proper movement, which second wheel is arranged to press down the stop and which second wheel is mounted in the four two-track steerings, wherein each said steering is arranged to give two tracks, one track being used for ascent lifting the adjustable rod unit and the material thereon from one shelf to another, and the other track being used for descent drawing-in said shelf into a transport position.