Ring shaped cooling device

A ring shaped cooling device for cooling hot particulate material comprising an annular frame having an outer and an inner annular wall connected to each other and defining an annular space therebetween open at the upper and lower end of said frame;

• a plurality of wheels located circumferentially spaced from each other outside said space and rotatably mounted on said outer and said inner annular wall, respectively;
• a plurality of carriages for carrying the material to be cooled located adjacent each other in said space between said opposite ends of said frame;
• a pair of axially aligned pins for each carriage, said pins being turnably mounted in said frame and fixedly connected to the respective carriage;
• a lever fixedly connected at one end to each of said pins outside said frame each extending transverse to the pin axis;
• a roller follower turnably mounted in the other end of each lever;
• a pair of annular guide rails respectively supporting the plurality of wheels which are rotatably mounted on said outer and said inner wall of said frame, said guide rails being also engaged by said roller followers, each of said guide rails having at a zone for unloading said carriages downwardly curving portions so that during riding of said roller followers over said downwardly curving portions the respective carriages will tilt about the axes of said pins connected thereto to thereby discharge the material therefrom.