US3807936A - Blade lifter especially for strongly abrasive substances - Google Patents

Blade lifter especially for strongly abrasive substances Download PDF

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Publication number
US3807936A
US3807936A US00329068A US32906873A US3807936A US 3807936 A US3807936 A US 3807936A US 00329068 A US00329068 A US 00329068A US 32906873 A US32906873 A US 32906873A US 3807936 A US3807936 A US 3807936A
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US
United States
Prior art keywords
blade
ribs
lifter according
lifter
blade portion
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
US00329068A
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English (en)
Inventor
A Vering
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.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Polysius AG
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Filing date
Publication date
Application filed by Polysius AG filed Critical Polysius AG
Application granted granted Critical
Publication of US3807936A publication Critical patent/US3807936A/en
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G65/00—Loading or unloading
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2814/00—Indexing codes relating to loading or unloading articles or bulk materials
    • B65G2814/03—Loading or unloading means
    • B65G2814/0301—General arrangements
    • B65G2814/0326—General arrangements for moving bulk material upwards or horizontally
    • B65G2814/0328—Picking-up means
    • B65G2814/0337—Paddle wheels

Definitions

  • a blade lifter adapted for installation within a rotary kiln drum used in the treatment of abrasive substances comprises a mounting portion and an inwardly projecting blade'portion formed integrally with one another, the surfaces of the blade portion being profiled by means of'ribs projecting from the surfaces of the blade portion.
  • Lifting members are generally installed on the inner peripheral surface of drums used in thermal treatment of strongly abrasive substances (e.g., as used for cement clinkers) and serve to lift the material being treated within the drum.
  • an object of the present invention is to provide a blade lifter of the type mentioned above, which is characterized by a comparatively simple construction while demonstrating great rigigidty and strength.
  • At least part of the lifting member is provided with a profile manufactured as part of the entire lifter blade in one piece with the latter.
  • a blade lifter with a profiled surface according to the invention is considerably more rigid than prior art versions. This is achieved while keeping the blade comparatively thin and using a comparatively small amount of construction material.
  • a profiled contour furthermore increases the surface area of the blade lifter, which in turn increases the amount 'of heat emitted by the blade member when installed in drums designed for thermal treatment of materials.
  • One of the preferred embodiments of the invention calls for a profile comprising pouch-like recesses. Part of the substance being treated, particularly if it is a finegrained material, will deposit in these cavities, forming a natural protection with respect to wear and abrasion and thus prolonging the service life of the lifting mem-' ber.
  • blade lifter of the invention is made of cast metal, profiling increases the surface hardness of the crust, thus improving the strength of the lifting member still more.
  • FIG. 1 is a sectional view (taken along the line II of FIG. 2) of the blade lifter according to the invention
  • FIG. 2 is a partial plan view of the blade lifter shown in FIG. 1;
  • FIG. 3 is a fragmentary plan view of the surface profile of a bladelifter (in the direction of arrows X shown in FIG. 1);
  • FIG. 4 is an enlarged fragmentary section taken on line lV-IV of FIG. 3;
  • FIGS. 5 and 6 illustrate two additional fragmentary plan views of other profile shapes possible for the Surface of the blade lifter (in the direction of arrows X shown in FIG. 1).
  • the blade lifter according to the invention as illustrated in FIGS. 1 and 2 consists for the most part of blade portion 2 in addition to a slightly curved portion 3 adapted to the curvature of the kiln shell (not illustrated), into which blade lifter 1 is to be installed. It is practical to have blade lifter 1 consisting of blade portion 2 and the curved part 3 manufactured in one piece from cast metal (e.g., cast steel).
  • cast metal e.g., cast steel
  • Blade, portion 2 comprises curved part 4, which in this embodiment has a quadrantal cross section, as well as two faces 5 and 5a.
  • the profile found on inside surface 6 and on outside surface 7 of curved part 4 of the blade lifter, is cast in one piece with the remaining part of the lifting member.
  • scoop rim 8 of blade portion 2 is equipped with a reinforced edge to guard especially against wear and abrasion.
  • the profile on sides 6 and 7 of the blade surface can be provided by intersecting ribs.
  • the intersecting ribs of the profile pattern shown in the embodiment illustrated in FIG. 3 are positioned with respect to each other such that they form pouchlike recesses 10, having a surface area in the shape of a rhombus or rhomboid (see also the corresponding partial cross-section of FIG. 4). If desired, and useful,
  • ribs 9 may also have a rectangular cross-section (as shown .in FIG. 4) or a cross-section which is tapered toward the outside.
  • the recesses may have different surface areas, e.g., that of a square or a rectangle.
  • rib-like projections each of which may form a complete circle 11 (see FIG. 5), or a complete rectangle 12 (see FIG. 6), or something similar.
  • Such ribbed projections 11 or 12 would also form pouch-like recesses, open toward the outside.
  • ribbed projections 11 or 12 might be spaced more or less closely together, whereby adjacent projections might be arranged in a straight line (as illustrated in FIG. 6) or they might be staggered as shown in FIG. 5.
  • the lifting member of the invention has a comparatively thin blade portion 2, yet the entire member is characterized by an extremely great rigidity, as well as by a considerably improved surface hardness of the crust compared with that of prior art versions.
  • that part of the surface of blade lifter l which is subjected to the greatest amount of abrasion acquires a very strong resistance to wear and abrasion, thereby considerably increasing the service life of the inventive lifting member.
  • a blade lifter adapted for installation within an abrasive substance treatment drum, said blade lifter comprising a mounting portion adapted for mounting on said drum, and a blade portion extending from said mounting portion in a direction to project inwardly of said drum, said blade portion having a profiled surface formed by a plurality of upstanding spaced apart ribs constituting an integral part of said blade portion, the spaces between adjacent ribs forming recesses.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
US00329068A 1972-04-13 1973-02-02 Blade lifter especially for strongly abrasive substances Expired - Lifetime US3807936A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE7213794 1972-04-13

Publications (1)

Publication Number Publication Date
US3807936A true US3807936A (en) 1974-04-30

Family

ID=6629591

Family Applications (1)

Application Number Title Priority Date Filing Date
US00329068A Expired - Lifetime US3807936A (en) 1972-04-13 1973-02-02 Blade lifter especially for strongly abrasive substances

Country Status (5)

Country Link
US (1) US3807936A (es)
JP (1) JPS5245730B2 (es)
BE (1) BE790920A (es)
BR (1) BR7301962D0 (es)
FR (1) FR2179701B3 (es)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3910756A (en) * 1972-11-10 1975-10-07 Polysius Ag Heat treating drum
US4094628A (en) * 1975-01-22 1978-06-13 F. L. Smith & Co. Rotary drum
US5702247A (en) * 1996-06-06 1997-12-30 Chemical Lime Company Kiln lining and method
US9555342B2 (en) 2010-05-18 2017-01-31 Envirollea Inc. Thermal processing reactor for mixtures, fabrication of the reactor, processes using the reactors and uses of the products obtained
US9828553B2 (en) 2013-02-06 2017-11-28 Envirollea Inc. Thermal process to transform contaminated or uncontaminated feed materials into useful oily products
US10655070B2 (en) 2012-07-23 2020-05-19 Envirollea Inc. Hybrid thermal process to separate and transform contaminated or uncontaminated hydrocarbon materials into useful products, uses of the process, manufacturing of the corresponding system and plant
US11530358B2 (en) 2017-07-13 2022-12-20 Envirollea Inc. Process for producing liquid fuel from waste hydrocarbon and/or organic material, reactor, apparatus, uses and managing system thereof
US11554378B2 (en) 2019-02-04 2023-01-17 Envirollea Inc. Flotation oils, processes and uses thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2104040A (en) * 1934-08-27 1938-01-04 George F Hurt Refuse incineration
US2190271A (en) * 1937-01-21 1940-02-13 Johns Manville Method and apparatus for melting rock and making products therefrom
US3025611A (en) * 1959-03-24 1962-03-20 Standard Steel Corp Drier with straight and sawtooth lifters
US3407511A (en) * 1967-05-16 1968-10-29 American Hoist & Derrick Co Rotary dryer for aggregate

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2104040A (en) * 1934-08-27 1938-01-04 George F Hurt Refuse incineration
US2190271A (en) * 1937-01-21 1940-02-13 Johns Manville Method and apparatus for melting rock and making products therefrom
US3025611A (en) * 1959-03-24 1962-03-20 Standard Steel Corp Drier with straight and sawtooth lifters
US3407511A (en) * 1967-05-16 1968-10-29 American Hoist & Derrick Co Rotary dryer for aggregate

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3910756A (en) * 1972-11-10 1975-10-07 Polysius Ag Heat treating drum
US4094628A (en) * 1975-01-22 1978-06-13 F. L. Smith & Co. Rotary drum
US5702247A (en) * 1996-06-06 1997-12-30 Chemical Lime Company Kiln lining and method
US9555342B2 (en) 2010-05-18 2017-01-31 Envirollea Inc. Thermal processing reactor for mixtures, fabrication of the reactor, processes using the reactors and uses of the products obtained
US10655070B2 (en) 2012-07-23 2020-05-19 Envirollea Inc. Hybrid thermal process to separate and transform contaminated or uncontaminated hydrocarbon materials into useful products, uses of the process, manufacturing of the corresponding system and plant
US9828553B2 (en) 2013-02-06 2017-11-28 Envirollea Inc. Thermal process to transform contaminated or uncontaminated feed materials into useful oily products
US11530358B2 (en) 2017-07-13 2022-12-20 Envirollea Inc. Process for producing liquid fuel from waste hydrocarbon and/or organic material, reactor, apparatus, uses and managing system thereof
US11554378B2 (en) 2019-02-04 2023-01-17 Envirollea Inc. Flotation oils, processes and uses thereof

Also Published As

Publication number Publication date
BR7301962D0 (pt) 1974-04-25
JPS5245730B2 (es) 1977-11-18
JPS4910212A (es) 1974-01-29
FR2179701A1 (es) 1973-11-23
FR2179701B3 (es) 1975-11-28
BE790920A (fr) 1973-03-01

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