Double-disc refiner

Details Double-disc refiner Double-disc refiner

1996-10-31

1998-06-09

Rosenbaum, Mark

Solid material comminution or disintegration

Apparatus

Cooperating comminuting surfaces

241297, B02C 711

Patent

active

057622752

ABSTRACT:
A double-disc refiner of the invention is formed of a driving shaft having one free end, a rotating disc fixed on the driving shaft and having a first rotating blade provided on one surface and a second rotating blade provided on the other surface thereof, and a crushing chamber surrounding the rotating disc, and first and second a material supply passages. On an inner wall of the crushing chamber, a first stationary blade is disposed to face the first rotating blade, and a second stationary blade is disposed to face the second rotating blade. An end surface of the one free end of the driving shaft is located in the first paper material supply passage, and includes projections to closely face a portion of the first paper material passage to prevent the material flowing through the first material supply passage from entering between the portion and the projections. Therefore, on the end surface of the driving shaft, pressure caused by the material is reduced to equalize spaces between the respective rotating and stationary blades.

REFERENCES:
patent: 3214104 (1965-10-01), Breuninger
Sprout Waldron Pressurized Refiner Oct. 1959.

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