Dispersing device for dispersing paper fiber, has treatment tools arranged in housing, and teeth arranged in ring shaped teeth rows and comprising circumferential groove that extends in circumferential direction

摘要

The device has two treatment tools arranged in a housing, and comprises teeth (6) arranged in ring shaped teeth rows (5) and a teeth gap is provided between the teeth, where fibrous material flows through the teeth gap. Ring-shaped intermediate spaces are provided between the teeth rows and are arranged such that one teeth row of the treatment tool extends in to the ring shaped intermediate space of another complementary treatment tool. The teeth comprise a circumferential groove (8) that extends in a circumferential direction (7).