US2907465A - Screening basket for oscillating centrifuge - Google Patents

Screening basket for oscillating centrifuge Download PDF

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Publication number
US2907465A
US2907465A US675876A US67587657A US2907465A US 2907465 A US2907465 A US 2907465A US 675876 A US675876 A US 675876A US 67587657 A US67587657 A US 67587657A US 2907465 A US2907465 A US 2907465A
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US
United States
Prior art keywords
rods
screening basket
basket
screening
centrifuge
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
US675876A
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English (en)
Inventor
Heckmann Wolfgang Gertr Joseph
Becker Joseph Hubert
Steven Fritz
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz AG
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
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Application filed by Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Application granted granted Critical
Publication of US2907465A publication Critical patent/US2907465A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/08—Rotary bowls
    • B04B7/18—Rotary bowls formed or coated with sieving or filtering elements
    • 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
    • B04B3/06—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering discharging solid particles by vibrating the bowl

Definitions

  • This invention relates to a centrifuge, commonly known as an oscillating centrifuge for separating water from fine granular material with a rotating conically shaped screening basket which is simultaneously axially oscillated to discharge the separated particles.
  • an improved screening basket for a centrifuge of the above type which screening basket comprises a substantially upright screening surface formed of a plurality of wires or rods of which the upper ends of the'wires or rods are equally spaced from one another on a common circle and their lower ends are arranged in spaced and alternatively staggered relationship on two difierent circles such that the lateral spacing between each of the wires or rods is uniform along the lengths thereof.
  • a basket ofthis type is simply constructed and is extremely durable.
  • Fig. 1 is a schematic vertical cross sectional view of an oscillating centrifuge.
  • Fig. 2 is an enlarged vertical cross sectional view of a screening basket formed with rods of circular cross section.
  • Fig. 3 is a partial bottom view of the basket shown in Fig. 2.
  • Fig. 4 is a partial view of the top edge of the screening basket as viewed from A.
  • Fig. 5 is a view taken along the line VV of Fig. 2.
  • Fig. 6 is a partial view taken similarly to Fig. 5 in which the screening basket is formed of rods having a trapezoidal cross section.
  • the centrifuge comprises an open top frustro-conically shaped screening basket 1, of which the generatrix of the screening surface is inclined at approximately 5 to 15 to the vertical.
  • the outer casing of the screening basket is formed of rods 2 and 3 which may, as shown in Figs. 2 and 4, be of circular cross section having a diameter of approximately 3 to 8 mm. and may be of a weldable, non corrosive and durable material such as chrome nickle steel.
  • the upper ends of the rods 2 and 3 are arranged on a common circle 4 and spaced from each other at a distance a, as for example approximately 3 mm. Joining the rods 2 and 3 there is a wound about each a wire 5 having a diameter equal to the spacing a. In this manner the rods 2 and 3 are maintained equally spaced from eachother on the circle 4.
  • the rods 2 and 3 are arranged in staggered relationship on two circles'8 and 9 such that the rods 2 lie on the outer circle 8 and the rods 3 on the inner circle 9. As shown in Fig. 5 the rods 2 and 3 are spaced from each other at a distance a of approximately 3 mm. To maintain this spacing the rods are joined by a high tensile strength Wire 10.
  • the rods 2 and 3 on the upper ends have welded thereto a lateral flange 6 and at their lower ends an annular base plate 12.
  • the rods 3 are longer than the rods 2 such that the former are seated and then welded within a circular recess 13 provided'in the base plate 12 thereby to center the screening surface 2 thereon.
  • the upper edge of the band 12 is also welded to the rods 2 thereby to increase the rigidity of the screening basket 1.
  • a conical shell 20 Carried on the hood 17 by means of a plurality of ribs 19 is a conical shell 20 which is provided with an inlet opening 45 for the slurry to be separated.
  • a hollow stationary center post 21 which is supported on the machine frame 22.
  • a hollow drum shaft 23 Rotatably journaled on the center post 21 is a hollow drum shaft 23 which is provided at its upper and lower ends respectively with collars 24 and 25.
  • Engaging the edge of each collar there are three or more sets of springs 26, 27 which are disposed between the base plate 12 and the collars 24 and 25 thereby to support the screening basket for oscillating movement.
  • a cam shaft 30 which is operated by a motor not shown. Embracing the cam shaft 30 is a pitman 31 which extends through the hollow center post 21 and is coupled at its upper end with a roller bearing 32 and a loose coupling 33 connected to the hood 17. In this manner the hood 17 is oscillated at a frequency of 30 vibrations per minute with a magnitude of 2 mm.
  • the screening basket is encircled by a stationary tank 34, the base of which is provided with an outlet pipe 35 for discharging the separated water.
  • the tank is fastened to the outer frame wall 37 by means of ribs 36 which wall 37 is supported on the machine base by means of ribs.
  • the tank 34 encircles the screening basket 1 such as to provide an annular compartment 38.
  • lugs 39 Secured to the lower edge of the frame wall 37 are lugs 39 which rest on vibration isolating bumpers 40 supported on the bunker 41.
  • the slurry from which the water is to be separated is inserted into the centrifuge through the inlet 45 into the annular compartment 42. During the passage therethrough the slurry is accelerated in the direction of rotation of revolving elements 17 and 20. After its passage through the annular compartment 42 the slurry is cast on the screening surface of the rotating and oscillating screening basket 1 whereat it travels upwardly and water is separated therefrom and discharged through the spaces 11. Whereupon the water is entrapped in the tank 34 and discharged through the outlet 35. The dried particles are discharged over the flange 6 on top of the basket 1 and fall through the compartment 38 into the bunker 41.
  • rods of different cross section there may be substituted rods of different cross section, as for example quadrangular or the like.
  • a rod 43 of trapezoidal cross section may be used.
  • the rods 43 are arranged such that the wider sides are facing inwardly.
  • the rods 43 6 are arranged relatively't'o each other to provide a spacing-44 which'is uniformly maintained throughout the height of the basket 1. Since the sides of the rods 43 taper the clearance of particles which may become wedged in 'the slots M is greatly facilitated. Under some circumstances itmay be desirable to arrange the rods such that they form vertically tapering slots.
  • l screening basket for a centrifuge having an inverted substantially frustro-conical screening surface, said surface comprising a plurality of substantially vertically disposed elongated members of uniform cross-section of which the upper ends are arranged on a common circle and'equally spaced from each other, and the lower ends of said elongate member are arranged in alternating staggered-relationship on two different circles, said lower ends being spaced from each other a distance equal to said equal distance between said upper ends, whereby there is formed a substantially vertical slot ofuniform width between each of said elongate members.
  • said screening basket comprises anannular base plate having a circular recess and a circular upright band secured to said base plate, the lower ends of said elongated members which are arranged on one of said circles projecting into said recess and being welded to said base plate and the lower' en'ds of said elongated members which are arranged in the other one of said circles being Welded to said band.
  • a screening basket for a centrifuge having an inverted substantially frustro-conical screening surface, said surface comprising a plurality of substantially vertically disposed, slightly inclined elongate members of uniform cross-section of which the upper ends are arranged on a common circle and equally spaced from each other, a base plate, the lower ends of said elongate members being seated on said base plate and being arranged in alternating staggered relationship on two different but concentric circles, said lower ends being spaced from each other a distance equal to said upper equai distance between said ends, whereby there is formed a substantially vertically disposed, slightly inclined slot of uniform width between each of said elongate members.

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  • Centrifugal Separators (AREA)
US675876A 1956-09-18 1957-08-02 Screening basket for oscillating centrifuge Expired - Lifetime US2907465A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK29896A DE1060794B (de) 1956-09-18 1956-09-18 Kegelstumpffoermige Siebschleudertrommel

Publications (1)

Publication Number Publication Date
US2907465A true US2907465A (en) 1959-10-06

Family

ID=7218673

Family Applications (1)

Application Number Title Priority Date Filing Date
US675876A Expired - Lifetime US2907465A (en) 1956-09-18 1957-08-02 Screening basket for oscillating centrifuge

Country Status (3)

Country Link
US (1) US2907465A (enrdf_load_stackoverflow)
BE (1) BE560678A (enrdf_load_stackoverflow)
DE (1) DE1060794B (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3483987A (en) * 1968-05-29 1969-12-16 Russell J Hilsinger Fluid separating device
US3491888A (en) * 1968-12-27 1970-01-27 Universal Oil Prod Co Self-cleaning screen baskets
US3507394A (en) * 1968-03-19 1970-04-21 Birmingham Small Arms Co Ltd Baskets for centrifuges
US3542676A (en) * 1969-08-21 1970-11-24 Universal Oil Prod Co Self-cleaning screen basket
US4317728A (en) * 1979-03-29 1982-03-02 Krauss-Maffei Aktiengesellschaft Wobble centrifuge

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1171340B (de) 1960-09-22 1964-05-27 Albert Ruckh Fa Schleudertrommel aus Kunststoff
DE202013000722U1 (de) * 2013-01-24 2013-02-27 Andreas Klotz Vorrichtung zur Bearbeitung von Kleinteilen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US748756A (en) * 1904-01-05 Jfo model
US2516963A (en) * 1947-04-28 1950-08-01 Gerber Prod Centrifugal pitter for fruit
US2766602A (en) * 1954-01-08 1956-10-16 John B Macgregor Washing machine basket
US2781130A (en) * 1953-06-30 1957-02-12 Kloeckner Humboldt Deutz Ag Centrifugal device for dehydrating a fine-granular material
US2806603A (en) * 1952-12-13 1957-09-17 Krauss Maffei Ag Centrifuge drum

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE521594C (de) * 1931-03-24 Arthur Habermann Schleudermaschine mit Spaltsiebtrommel und Austragschnecke
DE919274C (de) * 1949-04-01 1954-10-18 Steinhaus Gmbh Verfahren zur Herstellung eines Spaltsiebes
GB675696A (en) * 1950-06-07 1952-07-16 Western States Machine Co Improvements relating to centrifugal separators
DE952520C (de) * 1952-01-22 1956-11-15 Hein Lehmann Ag Konischer Spaltsiebkorb, insbesondere fuer Schleudern, sowie Verfahren und Vorrichtung zu seiner Herstellung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US748756A (en) * 1904-01-05 Jfo model
US2516963A (en) * 1947-04-28 1950-08-01 Gerber Prod Centrifugal pitter for fruit
US2806603A (en) * 1952-12-13 1957-09-17 Krauss Maffei Ag Centrifuge drum
US2781130A (en) * 1953-06-30 1957-02-12 Kloeckner Humboldt Deutz Ag Centrifugal device for dehydrating a fine-granular material
US2766602A (en) * 1954-01-08 1956-10-16 John B Macgregor Washing machine basket

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3507394A (en) * 1968-03-19 1970-04-21 Birmingham Small Arms Co Ltd Baskets for centrifuges
US3483987A (en) * 1968-05-29 1969-12-16 Russell J Hilsinger Fluid separating device
US3491888A (en) * 1968-12-27 1970-01-27 Universal Oil Prod Co Self-cleaning screen baskets
US3542676A (en) * 1969-08-21 1970-11-24 Universal Oil Prod Co Self-cleaning screen basket
US4317728A (en) * 1979-03-29 1982-03-02 Krauss-Maffei Aktiengesellschaft Wobble centrifuge

Also Published As

Publication number Publication date
BE560678A (enrdf_load_stackoverflow)
DE1060794B (de) 1959-07-02

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