Imperforate bowl: centrifugal separators – With means for furnishing auxiliary fluid to material or... – Liquid
Patent
1996-10-30
1998-07-28
Cooley, Charles E.
Imperforate bowl: centrifugal separators
With means for furnishing auxiliary fluid to material or...
Liquid
494 34, 494 65, B04B 512
Patent
active
057856370
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention pertains to systems and appliances for the cleaning and purification of fluids in which the predominant actions for the separation of suspended impurities in a fluid consist of the application of the centrifugal effect.
In already known centrifugation systems, as the ones described in documents DE-A-2409224 and CH-A-405160, these actions are performed along successive and discontinuous time periods to allow for the charge and the discharge of the fluids and the recovery of the impurities.
These time periods need to be longer since automatic valves controlled from outside of the appliance and dedicated to the discharge of impurities are not available which would avoid stopping the rotation of the centrifugation column for the above mentioned purpose.
An inadequate modulation of the centrifugation turbines and the independent pathways for the circulation of the fluid and the impurities also diminishes the yield of the centrifugation operations.
SUMMARY OF THE INVENTION
The objective of the present invention is to solve these problems by means of a system which uses, in association, centrifugation turbines with elements of surfaces which have, as an essential feature, a conical shape, thus creating independent centrifugation modules. The purpose of the conical shape is to speed up the ascending of the flow and, mainly, to accelerate the decent of the impurities, along the respective circulation paths.
The fitting of external gates, not only those of the circulation path of the fluid but also those of the circulation path of the impurities, with automatic valves allows its operation (opening and closing) to be performed from the outside, acting simultaneously, according to a program, without the need of stopping the rotation movement of the centrifugation modules.
A major advantage of the invention, since it allows a greater efficiency and a higher yield of the centrifugation operations, is that it makes the operations of purification and cleaning more economical and, thus, it allows its application to great quantities of deeply troubled liquids or fluids containing a great concentration of impurities.
One of the ways of carrying the invention into execution will be fully described as follows, with reference to the drawings, which only represent one way of execution.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a cross section of the centrifugation modules;
FIG. 2 is a profile view of the rotor and rotor blades and of the conical surface of their cover;
FIG. 3 is a review of the circular crown formed by two surfaces with a different conicity which constitute a campanula that separates two contiguous rotors.
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a section represents a centrifugation appliance showing the structure and grouping of the centrifugation modules and their common rotatable shaft (1), the cylindrical body (6) and the covers (7), (8), which enclose the column of modules and the rotatable shaft; the entrance portal of the fluid with impurities (9), the course of the fluid circulation in the multiple centrifugation stages (13) and the portal for its exit (10), already purified; the portal for the admission of the fluid which recovers the impurities and transports them (11), its circulation course (15) and the portal for its expelling (12).
As it can be seen by the drawings, an example of a centrifugation column is made up of, in a contiguous and successive way, several modules moved by a common rotatable shaft 1, and separated among themselves by intervallic spaces 13 intended for the circulation of the stream of fluid with impurities, along the several centrifugation stages.
Each centrifugation module is made up of a rotor (FIG. 2) and a campanula (FIG. 3). Each rotor is formed by a set of blades 2 secured to the shaft 1 and rotatable about a rotation axis and, by their superior periphery, to an element with a cone-shaped surface 3. Each campanula is an element axially spaced from the rotor with a surface of equal conicity as the rotors, in the s
REFERENCES:
patent: 451542 (1891-05-01), Watters
patent: 622408 (1899-04-01), Aspinall et al.
patent: 3819110 (1974-06-01), Baturov et al.
patent: 4202846 (1980-05-01), Shafranovsky et al.
patent: 4746222 (1988-05-01), Cobb et al.
Baptista Fernando A.
Pereira Dias Baptista Joao M.
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