Paper material refining apparatus

An apparatus for refining a paper material, comprising:

• a casing;
• a first chamber situated in the casing and having first and second openings;
• a second chamber situated inside the casing adjacent the first chamber, said second chamber having a third opening;
• a screen plate situated in the casing for dividing an interior of the casing into the first and second chambers, said screen plate removing one part of foreign substances;
• an agitating member situated inside the first chamber adjacent to the screen plate for agitating the paper material in the first chamber, said second opening being located near the agitating member for discharging the one part of the foreign substances;
• and
• cleaning means for removing the other part of the foreign substances contained in the paper material and situated in one of the first and second chambers, said cleaning means including a plurality of cleaners, each having at least one inlet for receiving the paper material at a peripheral portion, an outlet for discharging the paper material without containing the other part of the foreign substances and being located at one side portion, and a discharge port for discharging the other part of the foreign substances and formed at a side opposite to the outlet;
• a first passage communicating with the inlets of the cleaners for supplying the paper material to the cleaners;
• a second passage communicating with the discharge ports and having a fourth opening for discharging the other part of the foreign substances;
• and a third passage communicating with the outlets for providing the paper material without the other part of the foreign substances, said paper material supplied from the first opening passing through the cleaning means and the screen plate and being discharged from the third opening so that the one and the other foreign substances are substantially removed from the paper material.