Accurate orientation of logs results in optimum chipping
The ANDRITZ HHQ-Chipper with horizontal infeed is best suited for long logs. However, it works with short logs as well because the infeed chain conveyor will orient the short logs during chipping. The improved cutting geometry and optimized cutting speed produce thinner rectangular chips – with a profile best suited for today’s cooking or refining processes.
Logs are fed directly to the HHQ-Chipper through a large horizontal spout by a chain conveyor at a controlled speed. The horizontal infeed keeps the chipping process stable by holding the logs in the same position relative to the chipper disc during the chipping process. This minimizes the number of oversized and overthick chips, and tightens the chip size distribution. Horizontal infeed also minimizes log impacts, and therefore log breakage, prior to the chipper. The large spout accommodates infeed of crooked wood as well.
The chips are side-discharged to a screw hopper placed above floor level. The gentle discharge reduces chip damage as well as the amount of fines and pins produced. Tests show that the chips are of such high quality that they can be compared with screened chips.
Low maintenance requirements, easily changeable wear parts, and ergonomic and compact design all contribute to the total economy of the HHQ-Chipper.
