Hydrocyclone with an improved fluid injection member

Patent metadata

Field	Value
Publication number	US-12053786-B2
Application number	US-202018000068-A
Country	US
Kind code	B2
Filing date	Jul 3, 2020
Priority date	Jul 3, 2020
Publication date	Aug 6, 2024
Grant date	Aug 6, 2024

Abstract

A hydrocyclone having a mid-section having a longitudinal axis and a radius, and a fluid injection member releasably connected to the mid-section. The fluid injection member has a dilution passage therethrough and two spaced apart dilution ports, at least one dilution port being at an angle between 15 and 75 degrees relative to the mid-section radius. The injection member comprises a nozzle housing releasably connected to the mid-section, the nozzle housing having a dilution passage therethrough, and a nozzle adapted to be connected to the nozzle housing, the nozzle being planar and having at least one dilution port therethrough, the nozzle being receivable within the dilution passage.

First claim

The invention claimed is:

1. A hydrocyclone having a base end and an apex end and a single separation chamber between the base end and the apex end, and a mid-section between the base end and the apex end having a longitudinal axis and a radius, the mid-section having an interior for fluid passage therethrough, and a fluid injection member in the mid-section having at least one dilution port therethrough, the dilution port being into the interior of the mid-section and causing fluid to enter a tapering interior of the mid-section with both tangential and radial velocity components.

2. The hydrocyclone according to claim 1 wherein the mid-section comprises two spaced apart shells, and the fluid injection member is adapted to be connected to both of the shells.

3. The hydrocyclone according to claim 1 wherein the at least one dilution port is at an angle towards the apex end of the hydrocyclone.

4. The hydrocyclone according to claim 1 wherein the fluid injection member is adapted to be releasably connected to the mid-section.

5. A hydrocyclone having a base end and an apex end and a single separation chamber between the base end and the apex end, and a mid-section between the base end and the apex end having a tapering interior for fluid passage therethrough, a fluid injection member connected to the mid-section, the fluid injection member having a dilution passage therethrough, and at least one dilution port therethrough, the dilution port being into the tapering interior of the mid-section and causing fluid to enter the interior of the mid-section at an angle of between 5 and 75 degrees relative to the mid-section radius.

6. The hydrocyclone according to claim 5 wherein the fluid injection member comprises a nozzle housing connected to the mid-section, and at least one nozzle adapted to be connected to the nozzle housing.

7. The hydrocyclone according to claim 5 wherein the at least one dilution port is at an angle towards the apex end of the hydrocyclone.

8. The hydrocyclone according to claim 5 wherein the injection member is located at least 30% up the total length of a hydrocyclone from a hydrocyclone apex end.

9. The hydrocyclone according to claim 5 the dilution port being at an angle toward the apex end relative to the mid-section longitudinal axis of between 0 and 75 degrees.

10. A hydrocyclone having a base end and an apex end and a single separation chamber between the base end and the apex end, and a mid-section between the base end and the apex end having an interior for fluid passage therethrough, a fluid injection member adapted to be connected to the mid-section, the injection member having at least two spaced apart dilution ports into the interior of the mid-section and causing fluid to enter the interior of the mid-section.

11. The hydrocyclone according to claim 10 wherein one dilution port injects fluid into the mid-section in one direction and another dilution port injects fluid into the mid-section in a different direction.

12. The hydrocyclone according to claim 10 wherein the dilution port is at an angle of between 0 and 75 degrees from the hydrocyclone longitudinal axis towards the apex end of the hydrocyclone.

13. The hydrocyclone according to claim 10 wherein the mid-section comprises two spaced apart shells, and the fluid injection member is adapted to be connected to both of the shells.

14. The hydrocyclone according to claim 10 wherein the dilution ports are at an angle relative to the mid-section radius.

15. The hydrocyclone according to claim 10 wherein the injection member is located at least 30% up a total length of the hydrocyclone from a hydrocyclone apex end.

16. The hydrocyclone according to claim 10 wherein one dilution port is at one angle relative to the mid-section radius and another dilution port is at another angle relative to the mid-section radius.

17. The hydrocyclone according to claim 10 wherein one dilution port is at one angle relative to the mid-section longitudinal axis and another dilution port is at another angle relative to the mid-section longitudinal axis.

18. The hydrocyclone according to claim 10 wherein the fluid injection member is adapted to be releasably connected to the mid-section.

19. The hydrocyclone according to claim 10 wherein a nozzle is adapted to be attached to a nozzle housing so that the injection direction of both of the dilutions ports is in a direction perpendicular to the longitudinal axis of the hydrocyclone.

20. The hydrocyclone according to claim 19 wherein the nozzle has at least one dilution port through the nozzle, the dilution port being at an angle relative to the mid-section radius and not perpendicular to the mid-section longitudinal axis.

Assignees

• Valmet Technologies Oy

Inventors

• Backman Jan
• Backvik Ralf
• Becker Roger
• Carlsson Allan
• Kucher Valentina
• Persson Morgan
• Spegel Felix
• Sundin Jonas
• Eriksson Bengt

Classifications

• B04C2009/008

  with injection or suction of gas or liquid into the cyclone · CPC title

• B04C5/18

  with auxiliary fluid assisting discharge · CPC title

• D21D5/24

  in cyclones · CPC title

• B04C5/081 Primary

  Shapes or dimensions · CPC title