GB524343A - Improvements in or relating to the grading or separation of particles of solids or liquids - Google Patents

Improvements in or relating to the grading or separation of particles of solids or liquids

Info

Publication number
GB524343A
GB524343A GB290739A GB290739A GB524343A GB 524343 A GB524343 A GB 524343A GB 290739 A GB290739 A GB 290739A GB 290739 A GB290739 A GB 290739A GB 524343 A GB524343 A GB 524343A
Authority
GB
United Kingdom
Prior art keywords
particles
axis
wheel
medium
passages
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
Application number
GB290739A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB290739A priority Critical patent/GB524343A/en
Publication of GB524343A publication Critical patent/GB524343A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0087—Settling tanks provided with means for ensuring a special flow pattern, e.g. even inflow or outflow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2405—Feed mechanisms for settling tanks
    • B01D21/2416—Liquid distributors with a plurality of feed points
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
    • B01D21/262—Separation of sediment aided by centrifugal force or centripetal force by using a centrifuge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/30—Control equipment
    • B01D21/34—Controlling the feed distribution; Controlling the liquid level ; Control of process parameters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Centrifugal Separators (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)

Abstract

524,343. Centrifugal separators. MUTCH, N. Jan. 27, 1939, No. 2907. [Class 23] Particles dispersed in a fluid medium are separated from the medium, or graded, by causing the mixture to flow at a controlled speed in a direction contrary to the tendency to motion of the particles under centrifugal force. The passages through which the mixture flows have varying sectional areas such that the cross-sectional area at any point is inversely proportional to its distance from the axis of rotation. One form of apparatus is shown in Figs. 3, 4 and has a rotating wheel 14 in which blades 15 are arranged between upper and lower walls 16, 17 to form the passages which diverge from the periphery towards the centre. Four inlets 13 are provided in the casing surrounding the wheel; they are practically tangential to the wheel and the small parts of the casing between them has outlet ducts 19 into which the coarser material is thrown. A conduit 21, Fig. 5, may be provided at the forward end of each inlet to draw off any coarse material deposited in the inlet. The fine material passes through with the medium to a central outlet. In a modification the inlets 13 instead of being in the plane of the wheel, as shown, are inclined to that plane, and their mouths are provided with guide blades. Where the suspended particles are lighter than the medium the direction of flow is reversed. To separate various grades of particles passages of the type shown in Fig. 2 are used. This has an axis XY of rotation and the first part AB has a cross-sectional area varying inversely as the distance from the axis. The part BC diverges more rapidly than this and the part CD again expands with the cross-sectional area varying inversely as the distance from the axis. This alternate arrangement of sections continues as far as desired and the maximum size of particles able to pass through the parts AB, CD, EF diminishes. The particles able to pass through the section AB but not through the section CD collect in the section BC and similar action occurs in the other parts.
GB290739A 1939-01-27 1939-01-27 Improvements in or relating to the grading or separation of particles of solids or liquids Expired GB524343A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB290739A GB524343A (en) 1939-01-27 1939-01-27 Improvements in or relating to the grading or separation of particles of solids or liquids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB290739A GB524343A (en) 1939-01-27 1939-01-27 Improvements in or relating to the grading or separation of particles of solids or liquids

Publications (1)

Publication Number Publication Date
GB524343A true GB524343A (en) 1940-08-05

Family

ID=9748296

Family Applications (1)

Application Number Title Priority Date Filing Date
GB290739A Expired GB524343A (en) 1939-01-27 1939-01-27 Improvements in or relating to the grading or separation of particles of solids or liquids

Country Status (1)

Country Link
GB (1) GB524343A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0149221A2 (en) * 1984-01-14 1985-07-24 Northern Engineering Industries Plc Classifier

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0149221A2 (en) * 1984-01-14 1985-07-24 Northern Engineering Industries Plc Classifier
GB2154908A (en) * 1984-01-14 1985-09-18 Northern Eng Ind Centrifugal classifier for particulate material
EP0149221A3 (en) * 1984-01-14 1987-01-07 Northern Engineering Industries Plc Classifier

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