Braindl Fiber Classifier

For fiber fractionation according to Haindl, Brecht Holl and for recyclability measurement. The Braindl fiber fractionator made of corrosionresistant material is used to determine the form constituents of fibrous materials according to the Brecht-Holl and Haindl principles. An operating selector switch can be used to switch between the Haindl and Bracht-Holl function. By inserting the appropriate sieves, measurements can be carried out fully according to both measuring methods. Below the slotted plate is a rubber diaphragm which is continuously moved up and down by a motor-driven eccentric. A nozzle ring for injecting water according to Brecht-Holl and a nozzle according to Haindl are centrally mounted above the slotted plate. The eccentric moves the membrane at a speed of 200 strokes/min.

Test description

Depending on the test method selected, the method is set on the operating selector switch, the appropriate sieve is inserted, and the stroke for the diaphragm, determined according to standard, is set. A weighed pulp sample is added to the water in the wash tank. Water is sprayed through a splash ring onto the slotted plate. Fibers and pieces smaller than the slits are sucked through the plate and washed away due to the vibrating motion of the membrane. The slivers remain on the plate. When the wash cycle is complete, the water is drained and the slivers are washed off the slit plate, collected, dried and balanced. The percentage distribution of the slivers of the pulp used can be calculated.