Cyclone separator

Details Cyclone separator Cyclone separator

1998-12-21

2001-03-27

Walsh, Donald P. (Department: 3653)

Classifying, separating, and assorting solids

Fluid suspension

Gaseous

C209S138000, C209S145000, C209S133000, C209S140000

Reexamination Certificate

active

06206202

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to particle separated separators. It finds particular application in conjunction with cyclone separators, more particularly cyclone separators with an elongated and essentially vertical housing. The upper section is equipped with a carrier gas/product inlet, with a separator, a separating wheel and a discharge for a carrier gas and fine material. In whose lower section, an oversize material discharge is located.
Increasingly higher demands are imposed with respect to granulometric distribution during production, treatment and/or processing of powders, for example in the field of manufacturing coating powders. The goal is to obtain a narrow grain-size distribution curve, i.e., sharp upper grain or particle size limits as well as efficient product sifting. Attainment of these goals becomes more difficult as the grain-size distribution specifications become more restricted.
Cyclone separators of the initially mentioned type (see DE-U-91 01 419) are employed for the separation of powders into a coarse portion and a fine portion, i.e., for influencing the granulometric distribution of powders. With this arrangement, the properties of both a cyclone separator and a sifter are utilized.
SUMMARY OF THE INVENTION
This invention is based on the objective of improving the sorting of a cyclone sifter of the above type.
In one aspect of the present invention, the cyclone separator has a housing with a central, essentially axially extending unit. It separates the cyclone-typical carrier gas/particle streams in a downward direction in the peripheral region and in an upward direction in the central region. This achieves a regulated flow direction. Sifting is significantly improved in the region where the peripheral downward flow turns into the upward directed central flow (direction of deflection). Moreover, a defined solid particle distribution results in the grading zone.
In a second aspect of the present invention, secondary air is admitted so that the inlet in a lower conical section becomes an injector.
An advantage of the present invention is that it achieves improved sorting of particulate material.
Still further advantages of the present invention will become apparent to those of ordinary skill in the art upon reading and understanding the following detailed description of the preferred embodiments.


REFERENCES:
patent: 3904515 (1975-09-01), MacKenzie et al.
patent: 5188237 (1993-02-01), Schwamborn
patent: 5201422 (1993-04-01), Ihara et al.
patent: 1292479 (1958-08-01), None
patent: 91 01 419 U1 (1991-02-01), None
patent: 4116683 A1 (1991-05-01), None
patent: 468426 A2 (1991-07-01), None
patent: 7111 394 (1953-02-01), None

Affiliated with

Also associated with

Rating

Cyclone separator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cyclone separator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cyclone separator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2462534