Horizontal scroll screen centrifuge

A horizontal centrifuge comprising:

• a housing;
• a basket having an open outer end and an inner closed end and mounted within the housing to rotate about an axis of rotation;
• a tubular screen having inner and outer surfaces terminating with opposed inner and outer ends, the tubular screen being mounted inside the basket with the outer surface adjacent the basket;
• a retaining ring mounted to the outer end of the basket, the retaining ring contacting the outer end of the tubular screen to retain the tubular screen inside the basket;
• a scroll mounted within the basket to rotate about the axis of rotation, the scroll having open and closed ends adjacent the respective open and closed ends of the basket;
• and
• an infeed tube having an outlet extending into the outer end of the scroll.

A horizontal centrifuge comprising:

• a housing;
• a basket having an outer open end and an inner closed end and mounted within the housing to rotate about an axis of rotation;
• a tubular screen having inner and outer surfaces terminating with opposed open ends, the tubular screen being mounted inside the basket with the outer surface adjacent the basket, the tubular screen comprising six arcuate screen segments joined together;
• a scroll mounted within the basket to rotate about the axis of rotation, the scroll having open and closed ends adjacent the respective open and closed ends of the basket;
• and
• an infeed tube having an outlet extending into the outer end of the scroll.

A horizontal centrifuge comprising:

• a housing;
• a basket having an open outer end and an inner closed end and mounted within the housing to rotate about an axis of rotation;
• a tubular screen having inner and outer surfaces terminating with opposed ends, the tubular screen being mounted inside the basket with the outer surface adjacent the basket;
• a fabricated scroll mounted within the basket to rotate about the axis of rotation relative to the basket, the scroll comprising
• a tubular side wall with outer and inner ends adjacent the respective open and closed ends of the basket, the tubular side wall having a plurality of feed openings proximate the rear end,
• a plurality of helical screw flights attached to and extending outwardly from the tubular side wall between the outer and inner ends of the scroll, each of the plurality of screw flights having respective machined end surfaces equally spaced from an axial centerline of the scroll and moving in close proximity and relative to the inner surface of the screen,
• an end plate attached at the inner end of the tubular side wall to form a generally closed scroll end adjacent the closed end of the basket, and
• an infeed plate attached circumferentially inside the tubular side wall intermediate the front end and the rear end;
• and
• an infeed tube having an outlet extending through the infeed plate.

A horizontal centrifuge comprising:

• a housing;
• a basket having an open outer end and an inner closed end and mounted within the housing to rotate about an axis of rotation,
• a tubular screen having inner and outer surfaces terminating with opposed ends, the tubular screen being mounted inside the basket with the outer surface adjacent the basket;
• a scroll mounted within the basket to rotate about the axis of rotation, the scroll having open and closed ends adjacent the respective open and closed ends of the basket;
• an infeed tube having an outlet extending into the outer end of the scroll;
• and
• a scroll changing tool mounted to the housing and supporting the scroll during a process of inserting and removing the scroll from the housing.

A horizontal centrifuge comprising:

• a housing;
• a basket having an outer open end and an inner closed end and mounted within the housing to rotate about an axis of rotation, the basket further comprising a plurality of bearing surfaces;
• a tubular screen comprising six arcuate screen segments joined together and having inner and outer surfaces terminating with opposed open ends, the tubular screen being supported inside the basket by the plurality of bearing surfaces;
• a retaining ring mounted to the outer end of the basket, the retaining ring contacting the outer end of the tubular screen to retain the tubular screen inside the basket;
• a scroll mounted within the basket to rotate about the axis of rotation, the scroll having open and closed ends adjacent the respective open and closed ends of the basket;
• and
• an infeed tube having an outlet extending into the outer end of the scroll.