Kleeman screening units gain surface area of up to 44%

Wirtgen claims Kleemann’s EVO technology, a new material flow concept, is the key to greater performance
EVO consistently ensures that there is no restriction to material flowing through the plant. For example the discharge chute under the crusher is 100mm wider than the inner width of the crusher and the discharge belt which comes after this, is a further 100mm wider than the discharge chute. The material is thus transported quickly and carefully away from the critical area under the crusher.
But even before crushing takes place, there is an improvement in the material flow thanks to the system widths of the feeder troughs and grizzly that facilitate the smooth transport of the material through the opening of the crusher.
The independently vibrating and thus extremely effective double-decker grizzly, a 'speciality' of Kleemann's for some time, contributes towards the impressive cost efficiency of the machinery. In the EVO plants, the vibration behaviour of the screen and vibrating chute, for example, has been improved. Together with the newly designed crusher bypass which features changes to both form and geometry, the entire system has been relieved of load and a significant contribution has been made not only to increased performance but also the positive wear behaviour of the crusher.
New rotor ledges with optimised wear behaviour
The advantages to EVO technology don't stop there, however. The new crusher is a good example here with highlights such as a new inlet geometry allowing for even better penetration of the material into the range of the rotor. Furthermore, the wear behaviour of the new C-form rotor ledges has been improved to such an extent that the edges remain sharper for longer, leading to an end product of higher quality in the long run. The rotor ledges are held securely by a similarly new and extremely user-friendly clamping system. This means that they can be changed even quicker and thus contribute to the higher availability of the plant.
Fully hydraulic gap setting with automatic zero-point calculation
An even greater contribution made to the availability of the plant and the quality of the end product is, however, the newly developed and fully hydraulic adjustment of the crushing gap. Here, not only can the crushing gap be completely adjusted via the electronic control unit but the calculation of the zero-point is possible while the rotor is running. By manually opening the crusher and positioning the rotor, the impact toggles are made redundant.
Further improvements include the brand new control unit which impresses with its significantly simpler operation, as well as the new screening unit. Not only simpler and faster to assemble and disassemble, this screening unit is now significantly bigger, by over 44% with the MR 110 EVO. Only on such a scale can the considerably higher overall performance of approx. 350 t/h or 450 t/h (MR 110 EVO / MR 130 EVO) also be guaranteed during final screening.