Rotor element and a rotor for a screening apparatus
AssigneeAikawa Fiber Technologies Trust
InventorMathieu Hamelin
Life of this patent
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Abstract
The present invention relates to a turbulence element for use with a rotor and a rotor featuring turbulence elements. The rotor is used in a screening apparatus of the pulp and paper industry. The turbulence element has a longitudinal centerline (CL); two longitudinal edges, a leading edge and a trailing edge; two opposite ends, a first end and a second end; and two surfaces, a top surface and a bottom surface arranged between the leading edge and the trailing edge. The top surface is divided into a leading surface having its origin at the leading edge, and a trailing surface having its origin at the trailing edge. The leading edge and the leading surface are provided with undulations (U).
Claims28
A screening apparatus of pulp and paper industry, the screening apparatus comprising:
- a screen cylinder and
- a turbulence creating means rotating relative to the screen cylinder, the turbulence creating means having turbulence elements fastened thereon, each of the turbulence elements facing the screen cylinder and comprising:
- a longitudinal centerline (CL);
- a length (L) in a direction of an axis of the turbulence creating means;
- two longitudinal edges, a leading edge and a trailing edge;
- two opposite ends, a first end and a second end;
- and
- two surfaces, a top surface facing the screen cylinder and a bottom surface, each of the two surfaces arranged between the leading edge and the trailing edge;
- the top surface divided into a leading surface having an origin at the leading edge, and a trailing surface having an origin at the trailing edge, the leading and trailing surfaces meeting at a peak-line, and the leading surface having a circumferential length between the leading edge and the peak-line and the leading surface having undulations (U),
- wherein each of the undulations extends at most for the entire circumferential length of the leading surface, and wherein the leading surface forms an acute angle with the bottom surface of the turbulence element for the entire length (L) thereof.
Turbulence element for a screening apparatus of the pulp and paper industry, the turbulence element comprising:
- a longitudinal centreline CL;
- a length (L);
- two longitudinal edges, a first edge and a second edge;
- two opposite ends, a first end and a second end;
- and
- two surfaces, a top surface and a bottom surface, each of the two surfaces arranged between the first edge and the second edge;
- the top surface divided into a first surface having an origin at the first edge, and a second surface having an origin at the second edge, the first and second surfaces meeting at a peak-line, and the first surface having a circumferential length between the first edge and the peak-line, and the first surface having undulations (U), wherein each of the undulations extends at most for an entire circumferential length of the first surface and wherein the first surface forms an acute angle with the bottom surface of the turbulence element for the entire length (L) thereof.
Dependencies are inferred from the claim text.