GB490393A - Improved method and apparatus for the classification of materials - Google Patents
Improved method and apparatus for the classification of materialsInfo
- Publication number
- GB490393A GB490393A GB454937A GB454937A GB490393A GB 490393 A GB490393 A GB 490393A GB 454937 A GB454937 A GB 454937A GB 454937 A GB454937 A GB 454937A GB 490393 A GB490393 A GB 490393A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rotor
- plates
- materials
- cowl
- casing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
Abstract
490,393. Centrifugal separators. CAREY, W. F., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Feb. 15, 1937, No. 4549. [Class 23] Powdered materials are divided into coarse and fine fractions by the simultaneous action of centrifugal force and an opposing stream of fluid; the radial velocity of the fluid varies so that the pressure of the fluid balances the centrifugal force acting upon any particle of the size corresponding to the desired line of separation. A rotor 1 on the shaft 3 rotates in the casing 2 and has a number of radial plates 5 surmounted by a cowl 6. The materials to be classified are supplied through the tubes 8 and are constrained by the cylinder 7 to pass through an annular slit 9 in the cowl 6 to the inside of the rotor where they are subject to centrifugal action. A suction fan at the orifice 10 draws air or other gas through the vents 11 in the casing, and through the rotor from its circumference. The cowl is designed so that the inward radial velocity of the gas diminishes and the force it exerts upon a particle of the required size just balances the centrifugal force. Particles larger than this size move outwards and drop into the casing while the smaller particles are drawn through the orifice 10. The radial plates 5 have slots 14 to prevent material from accumulating between the plates, and the base of the rotor has circular ridges 16. In a modification, the rotor works on a horizontal axis and has rings of plates which forms zigzag channels for the passage of the materials and the gas. Specification 220,671, [Class 23], is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB454937A GB490393A (en) | 1937-02-15 | 1937-02-15 | Improved method and apparatus for the classification of materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB454937A GB490393A (en) | 1937-02-15 | 1937-02-15 | Improved method and apparatus for the classification of materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB490393A true GB490393A (en) | 1938-08-15 |
Family
ID=9779252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB454937A Expired GB490393A (en) | 1937-02-15 | 1937-02-15 | Improved method and apparatus for the classification of materials |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB490393A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2122514A (en) * | 1982-06-30 | 1984-01-18 | Nisshin Flour Milling Co | Powder classifier |
| GB2135913A (en) * | 1983-03-03 | 1984-09-12 | Roger Selly | Sorting method and machine |
-
1937
- 1937-02-15 GB GB454937A patent/GB490393A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2122514A (en) * | 1982-06-30 | 1984-01-18 | Nisshin Flour Milling Co | Powder classifier |
| GB2135913A (en) * | 1983-03-03 | 1984-09-12 | Roger Selly | Sorting method and machine |
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