US2676707A - Centrifugal machine - Google Patents

Centrifugal machine Download PDF

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Publication number
US2676707A
US2676707A US297923A US29792352A US2676707A US 2676707 A US2676707 A US 2676707A US 297923 A US297923 A US 297923A US 29792352 A US29792352 A US 29792352A US 2676707 A US2676707 A US 2676707A
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US
United States
Prior art keywords
drum
blades
centrifugal machine
diameter end
distributing
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 - Lifetime
Application number
US297923A
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English (en)
Inventor
Pieter Van Riel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Machinefabriek Reineveld NV
Original Assignee
Machinefabriek Reineveld NV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Machinefabriek Reineveld NV filed Critical Machinefabriek Reineveld NV
Application granted granted Critical
Publication of US2676707A publication Critical patent/US2676707A/en
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/02—Continuous feeding or discharging; Control arrangements therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B3/00—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering
    • B04B3/04—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl

Definitions

  • the invention relates to a centrifugal machine having a conical diverging perforated inner drum and a distributing drum located therein and adapted to rotate with an angular speed slightly differing from that of the inner drum and having blades or flights at its outer surface extending along substantially the whole length of the surface of the drum.
  • Continuously operating centrifugal machines of this kind are used for dewatering granular materials, such as fine grained coal, crystallized substances and the like. mass on the narrow part of the perforated screen drum indeed rapidly loses its water, but on the larger diameter end of the drum the mass under treatment is practically not further dewatered. As, however, the frictional resistance of the gran-' ular material is materially increased due to the loss of water the particles of the material on the last part of the drum are crushed.
  • the invention has for its object to improve the treatment of the material in a centrifugal ma chine of the kind referred to and to this end additional blades are provided on the distributing drum at its large diameter end between the main blades, said additional blades extending along about half the axial length of the drum and said main blades having a passage opposite the end of the additional blades. Through said passage The part of the mass moving along a main blade passes to the adjacent additional blade so that on the large diameter portion of the drum the mass is distributed over double the number of blades and consequently on a larger surface.
  • FIG. 1 shows a diagrammatical sectional elevation of a centrifugal machine provided with a distributing drum according to the invention
  • Fig.2 is a view of the curved surface of the distributing drum in developed condition.
  • the screen drum l is secured to a hollow shaft 2 enclosing the shaft 3 of the distributing drum 4.
  • the motor 5 drives the distributing drum 4 through the intermediary of a toothed gear 6 and the screen drum I through the intermediary of a gear 1.
  • the distributing drum! is provided with main blades 8 which have a passage 9 about in the middle of their length. At the large diameter end of the drum an additional blade 19 is ar-.. ranged between each pair of adjacent blades 8.
  • the passages 9 of adjacent main blades 8 are staggered with respect to'each other and the respective additional blades extend beyond the passage of the adjacent main blade so that the additional blades have different length.
  • the passages 9 in the main blades have a fixed relationship with respect to the adjacent end of the additional blades I 0.
  • the staggered arrangement of the passages 9 of the main blades 8 prevents the material under treatment on one of the main blades from reaching the adjacent main blade.
  • a centrifugal machine comprising a conical screen drum and a distributing drum posi tioned to rotate inside said screen drum and having a number of main blades at its outer surface extending substantially along the whole axial length of the drum, the provision of additional blades between adjacent main blades at the large diameter end of the drum and extending along about half the axial length of the drum and each of said main blades having a passage therethrough facing the end of the adjacent additional blades remote from the large diameter end of the drum.
  • a centrifugal machine comprising a conical screen drum and a distributing drum positioned to rotate inside said screen drum in spaced relationship therewith, a first, a second and a third series of blades mounted on the outside of said distributing drum to extend substantially across the space between said drums, the blades of said first series extending substantially axially of said distributing drum from the large diameter end thereof up to a first point substantially half way between the ends thereof, the blades of second series being each alined with a blade of said first series and extending froma second point slightly spaced from said first point up to the small diameter end of said distributing drum, and the blades of said third series alternating with the blades of said first series and extending from said large diameter end and across the space defined between said first and second points and terminating short of said small diameter end, thereby to provide a larger number of blades at said large diameter end than at said small diameter end.

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  • Centrifugal Separators (AREA)
US297923A 1951-07-20 1952-07-09 Centrifugal machine Expired - Lifetime US2676707A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2676707X 1951-07-20

Publications (1)

Publication Number Publication Date
US2676707A true US2676707A (en) 1954-04-27

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ID=19875305

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US297923A Expired - Lifetime US2676707A (en) 1951-07-20 1952-07-09 Centrifugal machine

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Country Link
US (1) US2676707A (US06342305-20020129-C00040.png)
NL (2) NL162760B (US06342305-20020129-C00040.png)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3332300A (en) * 1964-06-10 1967-07-25 Dorr Oliver Inc Centrifugal equipment

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US905860A (en) * 1906-07-26 1908-12-08 Separator Ab Centrifugal machine for drying.
US1235193A (en) * 1912-09-06 1917-07-31 Guy H Elmore Centrifugal drier.
US2249306A (en) * 1937-02-04 1941-07-15 Bailly Armand Centrifugal hydroextractor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US905860A (en) * 1906-07-26 1908-12-08 Separator Ab Centrifugal machine for drying.
US1235193A (en) * 1912-09-06 1917-07-31 Guy H Elmore Centrifugal drier.
US2249306A (en) * 1937-02-04 1941-07-15 Bailly Armand Centrifugal hydroextractor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3332300A (en) * 1964-06-10 1967-07-25 Dorr Oliver Inc Centrifugal equipment

Also Published As

Publication number Publication date
NL72873C (US06342305-20020129-C00040.png)
NL162760B (nl)

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