Dispersion apparatus for the preparation of waste paper

A dispersion apparatus for the preparation of waste paper material, comprising:

• a housing;
• a rotor rotatably arranged in said housing for rotation about a predetermined axis of rotation;
• said rotor being provided with teeth arranged in substantially ring-shaped rows disposed essentially concentrically with respect to said axis of rotation to define therebetween substantially ring-shaped intermediate spaces;
• said teeth containing tooth gaps therebetween;
• a stator;
• stationary substantially ring-shaped rows of teeth provided for said stator;
• said stationary ring-shaped rows of teeth of said stator engaging into said ring-shaped intermediate spaces between the rotatable rows of teeth of said rotor;
• said rows of teeth of said stator possessing tooth gaps;
• said tooth gaps of said rotor and said tooth gaps of said stator being spaced to allow the waste paper material to flow through said tooth gaps of the rotatable rows of teeth and the stationary rows of teeth in order to process the material flowing therethrough;
• means defining a discharge portion for the processed material;
• said rotor including an outer rotor ring having a plurality of transport teeth and serving for the removal of the dispersed material;
• said stator including an outer stator ring cooperating with said outer rotor ring serving for the removal of the dispersed material;
• said outer stator ring possessing a discharge opening for the dispersed material which is arranged over the discharge portion of the apparatus;
• said opening of said outer stator ring being downwardly directed towards said discharge portion and has an angle subtending an arc of approximately 90.degree.;
• said opening having an upper edge which encloses with respect to a horizontal plane passing through the axis of rotation, beneath said horizontal plane, an angle of approximately 10.degree. and overlies the discharge portion of the apparatus;
• and
• said outer stator ring comprising a solid ring having a circumferential portion extending in the direction of the axis of rotation towards said outer rotor ring and through a distance greater than the length of the teeth of said ring-shaped rows of teeth of said stator.