US3608395A - Drum rotor - Google Patents

Drum rotor Download PDF

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Publication number
US3608395A
US3608395A US737731A US3608395DA US3608395A US 3608395 A US3608395 A US 3608395A US 737731 A US737731 A US 737731A US 3608395D A US3608395D A US 3608395DA US 3608395 A US3608395 A US 3608395A
Authority
US
United States
Prior art keywords
mantle
end wall
drum rotor
end walls
elasticity
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
US737731A
Other languages
English (en)
Inventor
Gunnar Walter Brandt
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.)
Studsvik Energiteknik AB
Original Assignee
Studsvik Energiteknik AB
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 Studsvik Energiteknik AB filed Critical Studsvik Energiteknik AB
Application granted granted Critical
Publication of US3608395A publication Critical patent/US3608395A/en
Anticipated expiration legal-status Critical
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
    • B04B7/085—Rotary bowls fibre- or metal-reinforced
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/24—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by centrifugal force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B5/00—Other centrifuges
    • B04B5/08—Centrifuges for separating predominantly gaseous mixtures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S494/00—Imperforate bowl: centrifugal separators
    • Y10S494/90—Imperforate bowl: centrifugal separators involving mixture containing one or more gases
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2109—Balancing for drum, e.g., washing machine or arm-type structure, etc., centrifuge, etc.

Definitions

  • the present invention relates to a drum rotor for use for instance in centrifugation at a high speed of rotation.
  • the portion of reinforcing fibres oriented in the direction of the main stress is lower in the material of the end wall than in that of the mantle. It is also possible to use a plastic in the material of the end wall having a greater density than plastic in the material of the mantle.
  • the centrifuge shown in the drawing is adapted for the separation of gases having different molecular weights.
  • the centrifuge includes a drum rotor having a cylindrical mantle 3 and an end wall 1, 2 attached to each end of said mantle.
  • An inlet tube for the gas mixture to be cenice trifuged is connected to the end Wall 1, and said inlet tube 5 is connected to the end wall 11 by means of a flange 6 in a manner not shown in detail, for instance by a weld or by screws.
  • the end wall 1 is provided with a central opening, through which connection with the interior of the drum rotor is maintained through the inlet tube 5.
  • the interior of said cap 23 is connected to the interior of the outlet tube 12 through a central opening 26.
  • the outlet tube 12 extends through the coupling assembly 8, 9 and is rotatable relative the coupling half 9 and also gastightly sealed thereagainst.
  • the inlet tube 5 and the outlet tube .12 are journalled in bearings not shown to allow the rotation of the rotor and thus act as pivots.
  • the function of the above described centrifuge is briefly the following.
  • the drum rotor of the centrifuge is brought into rotation with a desired speed and the gas mixture to be separated is continuously supplied from above through the inlet tube 5.
  • the heavy fraction of the gas mixture will be thrown outwardly towards the walls of the mantle 3 and flows downwardly through apertures 17 as shown with arrows in the drawing and further downwardly through the apertures 21 in the lower partition wall 19.
  • the heavy fraction then enters the space between the coupling assembly 8, 9 and the outlet tube 12 and is discharged through the side outlet tube 11.
  • the light fraction remains in the central parts of the centrifuge and flows downwardly through the apertures 16 in the upper partition wall 15 and further downwardly through the apertures 20 in the lower partition wall 19 and into the collecting cap 23, from which the light frac tion leaves the centrifuge through the outlet tube 12.
  • the rotor works with a gas having a low pressure, for instance mm. Hg, in view of which the centrifugal forces acting on the gas are negligible as compared to the centrifugal forces acting on the mantle in view of the fact that the mass of the gas is much lower than that of the mantle.
  • the density of the material of the end walls can be increased by selecting a plastic material and/or a reinforcing material having a high density.
  • the module of elasticity can be lowered by lowering the portion of reinforcing fibres in the material 'of the end walls.
  • the module of elasticity can be essentially reduced by orienting the reinforcing fibres in the end walls essentially in another direction than the radial direction which is a direction of the main stress.
  • any material may be used in the drum rotor of the invention provided that the material fulfils the requirements as to strength with regard to rotational speed, dimensions etc.
  • thermosetting resins in combination with glass fibre reinforcement are particularly suitable.
  • the mantle may also be reinforced with another fibre material than glass fibres, for instance with graphite fibres, the ratio between module of elasticity and density of which is essentially higher than the corresponding ratio for glass fibres, thereby causing a corresponding smaller elongation in the mantle.
  • graphite fibres having a very high strength, the graphite fibres being polycrystalline and consisting of small graphite crystallites, the graphite planes of which are mainly orientedparallel to the fibre axis. The control of this orientation is essential to obtain a high strength.
  • reinforcing materials having a high ratio between module 'of elasticity and density are found among several groups of materials, for instance single crystals, so-called whiskers, polycrystalline materials, such as Al O ZrO and composite materials, such as B 0 and SiC deposited on metal threads.
  • whiskers polycrystalline materials, such as Al O ZrO and composite materials, such as B 0 and SiC deposited on metal threads.
  • the high .-strength of whiskers that can consist of ceramic whiskers,
  • A1 0 and metal whiskers for instance Cr, Cu
  • A1 0 and metal whiskers for instance Cr, Cu
  • metal whiskers for instance Cr, Cu
  • Drum rotor having a rotation-symmetrical, preferably cylindrical mantle made from a fibre-reinforced plastic and at least one end wall of fibre reinforced plastic attached thereto and being adapted to be rotated about its axis, the improvement wherein the material in the end wall has a ratio between density and module of elasticity which by means of a difference in its reinforcing fibres in relation to the fibres in the mantle is so much higher than the corresponding ratio for the material in the mantle that the elongations in the mantle and the end wall in the juncture therebetween due to the centrifugal force are essentially equal.
  • Drum rotor according to claim 1 made of fibre-reinforced plastic, characterized in that the material of the endwall has a smaller proportion of reinforcing fibres than the material of the mantle.
  • Drum rotor according to claim 1 made of fibre-reinforced plastic, characterized in that the material of the end wall has reinforcing fibres having a lower module of elasticity than those of the mantle.
  • Drum rotor according to claim 1 made of fibrereinforced plastic, characterized in that the proportion of reinforcing fibres oriented in the direction of the main stress is lower in the material of the end wall than in the material of the mantle.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Centrifugal Separators (AREA)
US737731A 1967-06-28 1968-06-17 Drum rotor Expired - Lifetime US3608395A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9556/67*A SE320936B (xx) 1967-06-28 1967-06-28

Publications (1)

Publication Number Publication Date
US3608395A true US3608395A (en) 1971-09-28

Family

ID=20276954

Family Applications (1)

Application Number Title Priority Date Filing Date
US737731A Expired - Lifetime US3608395A (en) 1967-06-28 1968-06-17 Drum rotor

Country Status (4)

Country Link
US (1) US3608395A (xx)
FR (1) FR1573386A (xx)
NL (1) NL6808692A (xx)
SE (1) SE320936B (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4639320A (en) * 1985-04-05 1987-01-27 United Coal Company Method for extracting water from solid fines or the like
US4640770A (en) * 1985-04-03 1987-02-03 United Coal Company Apparatus for extracting water from solid fines or the like

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE755482A (fr) * 1969-08-28 1971-02-01 Maschf Augsburg Nuernberg Ag Element composite
SE8702213L (sv) * 1987-05-26 1988-11-27 Kompositprodukter Sk Fm Ab Anordning vid en centrifugalseparator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4640770A (en) * 1985-04-03 1987-02-03 United Coal Company Apparatus for extracting water from solid fines or the like
US4639320A (en) * 1985-04-05 1987-01-27 United Coal Company Method for extracting water from solid fines or the like

Also Published As

Publication number Publication date
NL6808692A (xx) 1968-12-30
FR1573386A (xx) 1969-07-04
SE320936B (xx) 1970-02-16

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