Device for compression of emptied containers for recycling purposes

A device configured to compress emptied metal containers and emptied plastic containers,

• said device comprising a container compressing arrangement comprising:
• a first and a second rotatable roller, each of said first and second rotatable rollers is configured to rotate in a respective direction of rotation around a respective rotation axis, said first and second rollers are arranged adjacent to each other and with the rotational axes in parallel, the direction of rotation of said first roller being opposite to the respective direction of rotation of said second roller so that the first and second rollers cooperate in feeding of the containers between the rollers,
• wherein each of said first and second rollers comprises annular segments arranged spaced apart in succession along the length of the respective roller in an axial direction coinciding with said respective rotation axis, wherein each of said annular segments of said first roller extends between a respective pair of said annular segments of the second roller, and wherein each of said annular segments of said second roller extends between a respective pair of said annular segments of said first roller,
• wherein each annular segment comprises:
• protruding elements arranged in succession circumferentially around the respective roller, and each protruding element comprises a base from which the protruding element extends radially outwards, wherein each protruding element comprises a leading surface, a trailing surface arranged after said leading surface in the respective direction of rotation, a top surface connecting said leading surface and said trailing surface, and a first and a second side surface respectively arranged on opposite sides of each protruding element relative to a plane intersecting a center of said top surface and being orthogonal to the rotation axis of the respective roller;
• wherein
• each of said leading surface, said top surface and said trailing surface is planar or single curved,
• the junction between said leading surface and said top surface forms a first ridge for urging the emptied containers between said rollers,
• each of the protruding elements of one of said first and second rollers is arranged to pass between a respective pair of annular segments of the other of said first and second rollers;
• wherein
• E=2*Rmax AD, where E is the engagement value, Rmax is the maximum radius of the roller within said protruding element and AD is the distance between the respective rotation axis of said first and second rollers;
• each of said side surfaces comprises a slanting portion, which slanting portion is slanting outwards from said top surface towards said base and Lslanting >0.5*E, where Lslanting is the length of said slanting portion in a center plane intersecting the center of said top surface and the rotation axis of the roller, wherein
• TWmiddle >0.8* GWmiddle, where TWmiddle is the distance between the first and second (16) side surface in the axial direction of the protruding element at a distance equal to Rmax−E/2 from the rotation axis of said roller in said center plane,
• and GWmiddle is the shortest distance in the axial direction between said pair of annular segments between which said protruding element is arranged to pass, said shortest distance being determined at a distance equal to Rmax−E/2 from the rotation axis of the roller on which said pair of annular segments is arranged.