Sterlco SPS Series Pipe Shredder - Manual (Page 15)

GRN4-610 Chapter 2: Functional Description 15 of 73
Chapter 2: Functional Description
2-1 Models Covered in This Manual
This manual covers the1000 Series pipe shredder which includes models APS, CPS, MPS,
EPS and SPS. The 1000 Series pipe shredder is designed for size-reduction of plastic pipes
made of PE, PP, and PVC etc. The user is responsible for consequences resulting from
incorrect operation: This will lead to the loss of the warranty as well as any compensation
claims.
2-2 General Description & Typical Features
Mechanical section
After the machine has been switched on, a hydraulically controlled feeding unit pushes
the pipe onto the slow-running rotor. The in feed is controlled according to the load of the
motor.
The pipes can be fed horizontally and without precutting into the feeding trough of the
pipe shredder by a forklift or optionally with a loading device. The feeding trough has a
hydraulically operated cover, which is closed after it is filled with material. A hydraulic
ram system is than pushing the material towards the rotor. The ram consists of a double-
acting telescopic cylinder and the pusher itself, which is a heavy durable welding
construction. The pusher is moving on 3 sets of high performance guide roller skids.
Those adjustable skids are running on 3 independent guide rails. The trough is built with
tough steel profiles and all safety features are according latest CE-standards for work
safety. The pipe should be placed horizontally in the feeding trough mounted next to the
cutting chamber. Attention must be paid that this material does not contain any metal
parts. The guarantee does not cover any damage to the machine as a result of metal parts
being fed into the machine. The pipe in the feeding trough is shredded by the rotating
knives on the rotor. This shredding process is finished when the hydraulic cylinder has
reached its full stroke and the pusher is at the end position. The 1000 series shredder is
equipped with an E style rotor using a standard square, concave cutter blocks. These
cutters make light work of the heaviest pieces. Importantly, the design allows efficient
cutting of material, rather than hammering as well as reduced heat build-up and
degradation of material. The cutter blocks have four corners so they can be easily turned
once a corner has worn away. The projection of the cutter can be easily adjusted to match
the aggressiveness of the shredder with the customer’s material by adding or removing
thin shims on the cutters holder. The housing is a rigid welded and very compact
construction. Upper and lower part of the housing are bolted together and this makes
maintenance work very convenient. The housing is sitting on a base frame, which allows
easy installation of a discharge conveyor.
Due to the compact design this machine can only be used for screen-less operations!
The heavy-duty outboard bearings mounted on the 1000 series shredders minimize the
risk of contamination of the recycled materials and also minimize the risk of dust
penetrating the bearings and make a rotor change easier. Power is transmitted from the
electromotor by V-belts to the gearboxes, which are mounted directly on the shaft end on
either side of the rotor. In combination with the elastically supported torque arm this
construction will reduce stress to both motor and gear. The dual drive will further ensure
that all loads are evenly distributed into the rotor.