Herbold: Shredding of large-diameter PE pipes with the circular shredder of the ZSR series

Thick-walled PE pipes are continually growing in size. While 1.600 mm used to be the common standard, dimensions of over 2.000 mm are no longer any exception. The production of such pipes with wall thicknesses sometimes over 100 mm and purgings weighing several 100 kg naturally results in rejects, which must be economically recycled. Herbold Meckesheim GmbH (www.herbold.com) has taken a completely new approach to this problem: The circular shredder of the ZSR series (picture).

The material is deposited in a horizontal charging trough, which is equipped with a feed device on the front side. This feed device pushes the material deposited in the trough against an inclined disk rotor which is equipped with special cutting tools. This rotor cuts the material into thick-walled chips which are then crushed further in the following mill.

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The achievable end-product consists of a material with excellent flow properties with high bulk density, and a low proportion of fines, which can easily be transported and used in conventional systems.

Pipes of 6 m, 12 m or even longer can be fed in horizontally and processed without preliminary cutting.
The feed trough is closed and locked by means of a cover before the shredding process starts: this procedure prevents the danger of accidents and foreign bodies accidentally falling into the trough.

The throughput with even the smallest machines is achieving a performance of 1.5 to 2,5 t/h.

Herbold Meckesheim GmbH, Meckesheim