US2200202A - Centrifugal machine for the separation of solid and liquid materials - Google Patents

Centrifugal machine for the separation of solid and liquid materials Download PDF

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Publication number
US2200202A
US2200202A US154302A US15430237A US2200202A US 2200202 A US2200202 A US 2200202A US 154302 A US154302 A US 154302A US 15430237 A US15430237 A US 15430237A US 2200202 A US2200202 A US 2200202A
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United States
Prior art keywords
rotor
solid
liquid
valve
solid material
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Expired - Lifetime
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US154302A
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English (en)
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Harvey Cecil Ernest
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/10—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl
    • B04B1/12—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl with continuous discharge

Definitions

  • This invention concerns improvements in and relating to centrifugal machines for separating solid and liquid materials fromeach other. It is a particular object of the invention to provide a centrifugal machine which is especially adapted for the continuous separation of solids such as coal-dust, crushed grain and the like from liquids such as water, or for the treatment of materials such as sewage, and which will effectively replace known apparatus comprising settling ponds, slurry towers, dewatering sieves and so forth.
  • valve means may comprise a plurality of rotary star valves driven continuously from the rotating rotor of the machine.
  • the valve-means may be connected with the interior of the rotor by ducts extending tangentially of the periphery thereof.
  • valve-means there may also be provided means for permitting the separate expulsion or escape from the solid material about to' be discharged of further liquid separated therefrom.
  • Fig. 1 is a vertical section of a complete appa ratus, the valve casings being shown in elevation, i
  • Fig. 2 is a section taken on the line A-B of Fig. 1,
  • Fig. 3 is a section taken on the line C-D of Fig. 1,
  • Fig. 4 is a detail view showing a valve casing and associated parts in vertical section with the valve in elevation
  • Fig. 5 is a detail elevational view of the valvecasing taken from the right of Fig, 4 with the (o1. eas -20 deflecting means for the liquid escaping from the casing removed,
  • Fig. 6 is a section taken on the line E-F of Fig. 4, and
  • Fig. 7 is a fragmentary view, mainly in vertical. section, of the rotor of an apparatus according. to the invention, illustrating a modification.
  • the apparatus comprises an outer housing l with upper and lower transverse frame-members Zand 3.
  • a plate 4 carrying a central thrust bearing 5 in which is rotatably mounted the lower end of a vertical shaft 6, the upper end of which passes through a journal bearing 7 carried on the upper frame-member 2 to receive a drive from any suitable means, illustrated as comprising a pulley 8 and belt 9.
  • the shaft 6 may be directly coupled to an electric motor mounted on the cover la of the outer housing I.
  • the rotor II is of truncated conical shape and is mounted on the shaft 6 by means of upper and lower spiders H and i2.
  • the upper spider II is secured to the'shaft 6 through the intermediary of a deflector member l3 having a conical deflector plate 13a at its upper end located just beneath the inlet to the rotor.
  • the lower spider It supports the rotor through the intermediary of the bottom plate hi thereof, a central liqu1ddischarge opening Ma. being formed in the plate It around the shaft 6.
  • a fixed vertical charging duct I5 is provided coaxially with the shaft 6 to extend just within the open upper end of therotor NJ.
  • the raw material for instance the wash discharged from the stills of a whisky distillery, is introduced into the rotor through a funnel l6 and a sloping pipe ll which opens into the duct [5.
  • each valve l9 has four pockets which successively pass slowly through the four following positions: (1) a position in which the pocket is open to receive solid material from the corresponding duct I 8; 2) a position in which the pocket, filled with. solid material, is closed by the wall of the valve-' housing 29.
  • This wall is advantageously perforated or slotted, for example, as illustrated in Figs. 4, 5 and 6 where 2!
  • the vane-edges may be designed to cut or crush particles encountered and/or may be made slightly helical as indicated in Figs. 4 and 6.
  • the discharge opening 25 is similarly shaped, as clearly shown in Fig. 5.
  • the discharge-ducts i8 and valve-housings 2H, spaced equally around the rotor Ill, are carried round with the latter as it rotates at high speed.
  • the valves l9 themselves are rotated continuously in their housings 579 through vertical spindles 2! driven by gearing which is mounted, for example, above a plate 23 supported by a cylindrical wall 29 from the upper part of the rotor It.
  • the drive is obtained by the rolling of pinions fill, mounted on the plate 28, around a gear ring 3! fixed to the central charging duct l5.
  • These pinions 36 are connected to the valve spindles 2'! by horizontal shafts 32 and worm and worm-wheel gearing 33 which provides a high degree of speed-reduction, for example; a ratio of D to 1.
  • false vertical walls 34 are provided to extend from the bottom M to the sloping wall of the rotor (see Figs. 1 and 3) and provide between them tapering or hopperlike mouths to the said ducts it.
  • a depending skirt or lip 35 is provided around the opening Ma in the bottom of the rotor ill to guide the liquid discharged from the latter into a collecting chamber 36 carried on the plate t in which is secured a discharge pipe 3? for conducting the liquid to the exterior of the housing 8.
  • the rotor ill is set in rotation at a high speed in the direction of the arrow A in Fig. 2 and the raw material is fed in through the funnel l5,
  • the solid material fills the hopper-like mouths to the ducts I8 and also the latter and is continuously removed by the action of the valves l9, as already described.
  • the liquid expelled from the solid material through the slots 2!, during the passage of the solid material through the valve-housings 2f], is deflected by the elements-22 into the trough 23.
  • This liquid may in some cases be returned to the funnel it as it may contain some fine particles of solid material in suspen- SlOn.
  • Such means comprises one or more discs 39 (two are shown) secured on the shaft 6. These discs are disposed transversely within the rotor and increase in size in the downward direction, the lower (or lowermost) disc being of approximately the same diameter as the discharge opening Ma in the bottom of the rotor. This discharge opening is, however, larger than could be the case with the arrangement shown in Fig. l owing to the discs 39 causing the inner surface Ml of the liquid layer to assume a stepped formation.
  • a'further percentage of liquid may be removed from the solid material discharged from the valve-housings by providing a slowly rotating circular table of perforated or foraminous material, e. g. wiregauze,
  • a fixed scraper or knife is provided to cooperate with the upper surface of the table and gradually feed the solid material outwardly across the same to discharge over the edge thereof on to a suitable conveyor. The liquid meanwhile drains through the table to be collected in a stationary tray or trough.
  • the machine may be modified to efiect a selectiveseparation of solid materials.
  • a selectiveseparation of solid materials for example, the larger particles of coal are found to separate almost upon entering the rotor and tend to collect higher up its side.
  • a ledge may be provided at an intermediate level in the rotor and the space above the said ledge may be provided with a separate set of discharge-ducts and valves. arrangement, it will be possible to separate solid material into two or even more components accoal from pyrites, shale or clay.
  • ducts H? are each shown in Figs. 1 to 3 as extending in a direction opposite to that in which the rotor i0 is driven, these, ducts may if desired extend in the direction of rotation of the rotor.
  • the plate 28 may be constructed of a relatively smaller diameter and the drive from the worm and worm-wheel gearings 33 to the valves l9 would then comprise universally jointed shafts disposed overthe With this greater part of their length substantially parallel with the drum-wall of the rotor l0.
  • a centrifugal machine for separating solid and liquid materials from each other comprising a vertically disposed downwardly flaring conical drum-rotor, discharge ducts for separated solid material vextending tangentially outwardly from the periphery of the rotor at its maximum diameter, discharge valve means at the outer ends of the-said ducts, driving means operative for driving the said valve-means during operation of the machine, means for feeding the materials to be separated into the upper end of the rotor,
  • a centrifugal machine for separating solid and liquid materials from each other comprising a flaring vertically disposed rotor-drum, valveliquid material from the said drum, the valve housings being each formed with an outwardly aperturedwall-portion over which the solid material is traversed by the respective valve to permit of expulsion, under centrifugal force, of liquid still being carried along by the solid material.
  • a centrifugal machine comprising also a wall positioned for the discharge against it of solid material discharged from the valve-housings, an outlet towhich the said material falls from the said wall, a deflector positioned for receiving liquid expelled by Way of the apertured wall-portions of the said housings, and a collecting trough positioned for receiving the deflected liquid.

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  • Centrifugal Separators (AREA)
US154302A 1936-07-25 1937-07-17 Centrifugal machine for the separation of solid and liquid materials Expired - Lifetime US2200202A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB20656/36A GB478816A (en) 1936-07-25 1936-07-25 Improvements relating to centrifugal machines for the separation of solid and liquidmaterials

Publications (1)

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US2200202A true US2200202A (en) 1940-05-07

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Application Number Title Priority Date Filing Date
US154302A Expired - Lifetime US2200202A (en) 1936-07-25 1937-07-17 Centrifugal machine for the separation of solid and liquid materials

Country Status (5)

Country Link
US (1) US2200202A (en:Method)
BE (1) BE422835A (en:Method)
FR (1) FR824537A (en:Method)
GB (1) GB478816A (en:Method)
NL (1) NL45159C (en:Method)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2538529A (en) * 1945-12-18 1951-01-16 Komline Sanderson Eng Corp Centrifuge
US2559917A (en) * 1945-12-22 1951-07-10 Paul J Gresham Centrifuge bowl with reciprocating valve for discharging solids from the bowl
US2578468A (en) * 1946-01-14 1951-12-11 Fleischer Svend Sigur Christie Continuous centrifugal separator
US2723799A (en) * 1951-02-03 1955-11-15 Sharples Corp Centrifugal separation
US3780936A (en) * 1972-01-05 1973-12-25 Department Of Health Education Mixer-separator for automated analytical chemistry system
US3784092A (en) * 1971-04-27 1974-01-08 Glacier Metal Co Ltd Centrifugal separator

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2538529A (en) * 1945-12-18 1951-01-16 Komline Sanderson Eng Corp Centrifuge
US2559917A (en) * 1945-12-22 1951-07-10 Paul J Gresham Centrifuge bowl with reciprocating valve for discharging solids from the bowl
US2578468A (en) * 1946-01-14 1951-12-11 Fleischer Svend Sigur Christie Continuous centrifugal separator
US2723799A (en) * 1951-02-03 1955-11-15 Sharples Corp Centrifugal separation
US3784092A (en) * 1971-04-27 1974-01-08 Glacier Metal Co Ltd Centrifugal separator
US3780936A (en) * 1972-01-05 1973-12-25 Department Of Health Education Mixer-separator for automated analytical chemistry system

Also Published As

Publication number Publication date
NL45159C (en:Method)
BE422835A (en:Method)
GB478816A (en) 1938-01-25
FR824537A (fr) 1938-02-10

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