Centrifugal separator, wear resistance member and set of wear resistance members for a centrifugal separator

Patent metadata

Field	Value
Publication number	US-9943862-B2
Application number	US-201113884797-A
Country	US
Kind code	B2
Filing date	Nov 10, 2011
Priority date	Nov 12, 2010
Publication date	Apr 17, 2018
Grant date	Apr 17, 2018

Abstract

A centrifugal separator includes a bowl with a conical part with a narrow discharge end comprising a radial surface; an end member opposite the radial surface; a number of distance members extending between the radial surface and the end member and providing outlet openings for a separated solid or heavy phase between adjacent distance members; and wear resistance members covering surfaces at the outlet opening. The wear resistance members include plate members and bushing members. The bushing members include mantle portions surrounding respective distance members. The plate members each cover a portion of the radial surface between adjacent bushing members.

First claim

What is claimed is:

1. A centrifugal separator comprising:
a bowl rotatable in a direction of rotation around a longitudinal axis of rotation of said bowl, said bowl comprising a conical part with a discharge end for a separated solid or heavy phase comprising a radial surface;
an end member opposite the radial surface;
a plurality of distance members extending between the radial surface and the end member and providing outlet openings between adjacent distance members, said distance members having a length extending generally parallel to the longitudinal axis of rotation and an exterior circumferential surface extending around the length of the distance member;
a plurality of first wear resistance members each having an inner surface covering at least a portion of the exterior circumferential surface of a respective one of said plurality of distance members and each of the plurality of first wear resistance members having an axial end surface covering a first portion of the radial surface of the bowl; and
a plurality of second wear resistance members each covering a respective second portion of the radial surface of the bowl and disposed adjacent to the axial end surface of the first wear resistance members.

2. The centrifugal separator according to claim 1 , wherein each of the plurality of first wear resistance member comprises a mantle that is tubular and completely circumferentially surrounds the exterior circumferential surface of a respective one of said plurality of distance members.

3. The centrifugal separator according to claim 2 , wherein the mantle is positioned around the distance member thereby defining a gap therebetween and a filling material is disposed in the gap.

4. The centrifugal separator according to claim 1 , wherein each of the plurality of first wear resistance members comprises a mantle that has a C-shaped cross-section perpendicular to the axial direction.

5. The centrifugal separator according to claim 1 , wherein each of the plurality of second wear resistance members comprises a plate member.

6. The centrifugal separator according to claim 5 , wherein the plate member comprises a concave edge, the concave edge having a lip extending therefrom, the radial surface having a corner formed on a radially innermost portion thereof, the lip extending over the corner to provide wear protection to the corner.

7. The centrifugal separator according to claim 1 , wherein the axial end surface comprises a flange extending radially outward from each of the plurality of first wear resistance members.

8. The centrifugal separator according to claim 7 , wherein the flange and respective ones of the plurality of second wear resistance members engage one another via overlapping edges of the flange and the second wear resistance members.

9. The centrifugal separator according to claim 8 , wherein each of the plurality of second wear resistance members has a waist portion which engages the flange.

10. The centrifugal separator according to claim 1 , wherein each of the plurality of second wear resistance members comprises an opening extending therethrough, a respective one of the plurality of distance members extending through the opening.

11. The centrifugal separator according to claim 1 , wherein each of the plurality of second wear resistance members comprises a hole extending therethrough, the hole being configured to receive a fastening member.

12. The centrifugal separator according to claim 1 , wherein at least one of the first wear resistance members and the second wear resistance members comprise tungsten carbide.

13. The centrifugal separator according to claim 1 , wherein each of the plurality of distance members and each of the plurality of first wear resistance members have a non-circular cross section perpendicular to the axial direction thus preventing the respective second wear resistance member from rotating with respect to the respective distance member.

Assignees

• Lendzian Willi B
• Svarrer Hans Lauge Joakim
• Reiff Henrik
• Alfa Laval Corp Ab

Inventors

• Lendzian Willi B
• Svarrer Hans Lauge Joakim
• Reiff Henrik

Classifications

• B04B15/00

  Other accessories for centrifuges · CPC title

• B04B7/12 Primary

  Inserts, e.g. armouring plates · CPC title

• B04B1/20

  discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl · CPC title

• B04B1/2008

  with an abrasion-resistant conveyor or drum · CPC title

• B04B2001/2091

  Configuration of solids outlets · CPC title