Refiner plate with interspersed surface and subsurface dams

  • US 6,032,888 A
  • Filed: 04/16/1999
  • Issued: 03/07/2000
  • Est. Priority Date: 04/16/1999
  • Status: Active Grant
First Claim
Patent Images

1. A refiner plate segment for refining lignocellulosic material, comprising:

  • at least one field consisting essentially of a pattern including a plurality of substantially radially disposed bars defining an upper surface, a plurality of substantially radially disposed grooves disposed intermediate said bars defining a lower surface, and at least one dam means traversing each of said grooves for restricting radial flow of said material through said respective grooves;

    wherein each said dam means is one of either a full height dam extending from said lower surface to said upper surface or a partial height dam extending from said lower surface to a height intermediate said lower and upper surfaces, andwherein a plurality of grooves having a plurality of full height dams and no partial height dams are individually alternated with a plurality of grooves having a combination of full height dams and partial height dams.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×