US3363888A - Rotary apparatus for the heating of particulate or granular materials, especially stones for road-making materials - Google Patents

Rotary apparatus for the heating of particulate or granular materials, especially stones for road-making materials Download PDF

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Publication number
US3363888A
US3363888A US545002A US54500266A US3363888A US 3363888 A US3363888 A US 3363888A US 545002 A US545002 A US 545002A US 54500266 A US54500266 A US 54500266A US 3363888 A US3363888 A US 3363888A
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US
United States
Prior art keywords
drum
wall
heating
materials
opening
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
US545002A
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English (en)
Inventor
Nielsen Aage
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.)
H Nielsen and Son Maskinfabrik AS
Pedershaab Maskinfabrik AS
Original Assignee
H Nielsen and Son Maskinfabrik AS
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Application filed by H Nielsen and Son Maskinfabrik AS filed Critical H Nielsen and Son Maskinfabrik AS
Application granted granted Critical
Publication of US3363888A publication Critical patent/US3363888A/en
Assigned to KNUDSEN, S. SKOV, BARRISTER, (TRUSTEE IN THE ESTATE OF H. NIELSEN & SON MASKINFABRIK A/S, NIELSEN, BENT, BARRISTER, (TRUSTEE IN THE ESTATE OF H. NIELSEN & SON MASKINFABRIK A/S), MORCH, NIELS, BARRISTER,(TRUSTEE IN THE ESTATE OF H. NIELSEN & SON MASKINFABRIK A/S reassignment KNUDSEN, S. SKOV, BARRISTER, (TRUSTEE IN THE ESTATE OF H. NIELSEN & SON MASKINFABRIK A/S ATTESTATION FROM THE PROBATE COURT, THE MARITIME AND COMMERCIAL COURT, APPOINTING ASSIGNEES AS TRUSTEES. Assignors: H. NIELSEN & SON MASKINFABRIK A/S, BANKRUPT.
Assigned to PEDERSHAAB MASKINFABRIK A/S, reassignment PEDERSHAAB MASKINFABRIK A/S, ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: H. NIELSEN & SONS MASKINFABRIK A/S A COMPANY OF DENMARK
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/05—Crushing, pulverising or disintegrating apparatus; Aggregate screening, cleaning, drying or heating apparatus; Dust-collecting arrangements specially adapted therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
    • F26B11/026—Arrangements for charging or discharging the materials to be dried, e.g. discharging by reversing drum rotation, using spiral-type inserts

Definitions

  • This invention relates to an apparatus for heating particulate or granular materials, such as stones for roadmaking materials, and comprising a rotatably supported drum having at least one feed opening and one discharge opening for the material, means for heating material located within the drum and driving means for rotating the drum about a longitudinal axis thereof.
  • a known apparatus of this type comprises a stationary feed funnel connecting into a feed opening in one end wall of the drum whilst a stationary discharge chute is provided in a discharge opening in the other end wall.
  • the chute can be tilted on a horizontal axis between an inoperative position wherein it is upwardly inclined as seen from the drum, and a discharge position wherein it is downwardly inclined. In the latter position the portion of the chute disposed inside the drum may operate as a scraping member which catches the material conveyed along the walls of the drum during the rotation thereof and discharges it from the drum.
  • an apparatus of the kind referred to comprises a drum having a circumferential wall and at least one end well, said discharge opening or openings being located in said circumferential wall of the drum, bafile means located along opposed edge portions of each discharge opening at the inner side and the outer side, respectively, of said circumferential wall and extending from said edge portions in opposite directions circumferentially across and past said opening in spaced relation 3,363,888 Patented Jan. 16, 1968 to said wall, and the driving means for rotating the drum are arranged for selectively reversing the direction of r0- tation of the drum.
  • the said bafile means define, in conjunction with each discharge opening, a tortuous channel between the inner side and the outer side of the circumferential drum wall, and through this channel the material may be rapidly discharged from the drum during the rotation thereof whereby the leading edge, as viewed in the direction of rotation, of the internal baflle means contributes to scraping the material oif the drum wall.
  • the leading edge, as viewed in the direction of rotation, of the internal baflle means contributes to scraping the material oif the drum wall.
  • Each discharge opening may be substantially rectangular in plan view and defined by two axially extending edges and two circumferentially extending edges, and the radial spacing between the drum wall and the bafile means may be substantially equal to the dimension of the opening in the circumferential direction of the drum, whereby the cross section of the channel referred to above becomes substantially constant over the entire length of the channel.
  • FIG. 1 is a vertical section, taken on line II in FIG. 2, through an apparatus embodying the invention, wherein such parts as are not deemed necessary for under standing the invention, have been omitted, and
  • FIG. 2 is a section taken on line II-II in FIG. 1.
  • the apparatus shown in the drawings comprises a drum 1 the circumferential wall of which consists of a cylindrical central portion 2 and two conical end portions 3.
  • One end wall 4 of the drum is provided with a central opening 6, and a stationary disposed feed funnel 7, the support means of which is not shown, extends some distance into the drum through the opening 6.
  • the other end wall 5 of the drum is provided with a central opening 8, and a diagrammatically shown oil burner 9 is, in a manner not shown, supported outside the drum the contents of which are heated by means of the burner flame during operation of the apparatus.
  • the driving rollers 11 which may be coated with a friction-increasing material, such as rubber, are driven by means of reversible electric motors 12.
  • the central portion 2 of the drum 1 is surrounded by a stationary jacket 13 which beneath the middle portion of the drum has a discharge channel 14, and which diametrically opposite said channel 14 has a flue 15 for removing hot gases from the drum.
  • the openings 16 extend over the major part of the length of the central portion 2.
  • a baflie or guide member in the shape of a vane 17 or 18, respectively, is associated with each opening 16.
  • the vane 17 is secured, for example by Welding, to the inner wall of the drum portion 2 along one longitudinal edge of the opening 16 and thence it extends first in an inclined direc tion towards the interior of the drum, see FIG. 2, and then substantially tangentially, i.e. parallel to the drum wall, across the opening 16 and past the opposite edge thereof.
  • each vane 17 or 18 covers a portion of the circumference of the drum section which is substantially equal to half the distance between two successive openings 16. With a view to stiffening the vanes 17 and 18 they may, as shown, be connected with the drum wall along their axial edges by means of wall portions 19 and 2.0 respectively.
  • the drum shown may, for example, be used for heating and drying stone material for road surfaces.
  • a weighedoff portion of stones, pre-graded as requested, is fed to the drum through the funnel 7, and then the drum is caused to rotate by starting the motors 12, and the oil burner 9 is ignited.
  • sufiicient for freeing the material of water and for heating it to a desired temperature which for example may lie between about 70 and 200 deg. centigrade, it is discharged from the drum through the discharge channel 14 and passed on to for example a mixer, not shown, in which the stones are coated and mixed with asphalt or another bituminous binder. In the apparatus described this discharge operation is carried out simply by reversing the direction of rotation of the drum 1.
  • the drum rotates in the direction of arrow A, FIG. 2, and the material contained in the drum will then be incapable of leaving the drum through the channels formed by the openings 16 and the adjoining passages between the drum wall and the vanes 17 and 18, while the hot gases may escape freely through the channels located above the surface of the material layer and be discharged through the flue 15.
  • the vanes 17 operate as guide members which initially scrape the material oif the drum wall and subsequently guide any remaining stones, into the channels.
  • Apparatus for heating particulate or granular materials, such as stones for road-making materials comprising a drum having at least one end wall and a circumferential wall having a cylindrical central portion and two conical end portions; means for rotatably supporting said drum; means for rotating said drum about its longitudinal axis and for selectively reversing the direction of rotation of the drum; at least one feed opening for introducing material into said drum; at least one discharge opening located in said central wall portion; baflle means located along opposed edge portions of said discharge opening at the inner side and the outer side, respectively, of said circumferential wall and extending from said edge portions in opposite directions circumferentially across and past said discharge opening in spaced relation to said wall; and means for heating material located within said drum.
  • Apparatus as claimed in claim 1 and comprising a plurality of discharge openings in said circumferential wall, wherein the dimensions of each bafile means in the circumferential direction of the drum is substantially equal to one half of the distance between adjacent discharge openings in said wall.
  • Apparatus as claimed in claim 1 further comprising a stationary jacket surrounding said central wall portion and adjoining parts of said conical end portions of said circumferential drum wall, a discharge channel opening in the lower middle portion of said jacket, and a gas exhaust conduit extending from the upper middle portion of said jacket.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Processing Of Solid Wastes (AREA)
  • Soil Working Implements (AREA)
  • Road Paving Machines (AREA)
  • Combined Means For Separation Of Solids (AREA)
US545002A 1965-05-03 1966-04-25 Rotary apparatus for the heating of particulate or granular materials, especially stones for road-making materials Expired - Lifetime US3363888A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK223565AA DK111117B (da) 1965-05-03 1965-05-03 Apparat til opvarmning af kornet materiale, navnlig sten til vejbygningsmaterialer.

Publications (1)

Publication Number Publication Date
US3363888A true US3363888A (en) 1968-01-16

Family

ID=8110973

Family Applications (1)

Application Number Title Priority Date Filing Date
US545002A Expired - Lifetime US3363888A (en) 1965-05-03 1966-04-25 Rotary apparatus for the heating of particulate or granular materials, especially stones for road-making materials

Country Status (6)

Country Link
US (1) US3363888A (pl)
BE (1) BE680125A (pl)
DE (1) DE1534346A1 (pl)
DK (1) DK111117B (pl)
GB (1) GB1101174A (pl)
SE (1) SE304303B (pl)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3741717A (en) * 1971-12-27 1973-06-26 L Triplett Grain treating apparatuses and processes of operation thereof
US4181846A (en) * 1977-10-05 1980-01-01 Cunningham Ronald J Rotary heating apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2315022A (en) * 1941-05-08 1943-03-30 Co Bartlett & Snow Co Apparatus for treating materials
US2923538A (en) * 1955-09-19 1960-02-02 Monolith Portland Cement Compa Rotary kiln construction

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2315022A (en) * 1941-05-08 1943-03-30 Co Bartlett & Snow Co Apparatus for treating materials
US2923538A (en) * 1955-09-19 1960-02-02 Monolith Portland Cement Compa Rotary kiln construction

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3741717A (en) * 1971-12-27 1973-06-26 L Triplett Grain treating apparatuses and processes of operation thereof
US4181846A (en) * 1977-10-05 1980-01-01 Cunningham Ronald J Rotary heating apparatus

Also Published As

Publication number Publication date
DK111117B (da) 1968-06-10
DE1534346A1 (de) 1969-12-18
SE304303B (pl) 1968-09-23
BE680125A (pl) 1966-10-03
GB1101174A (en) 1968-01-31

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Legal Events

Date Code Title Description
AS Assignment

Owner name: PEDERSHAAB MASKINFABRIK A/S, A COMPANY OF DENMARK

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:H. NIELSEN & SONS MASKINFABRIK A/S A COMPANY OF DENMARK;REEL/FRAME:003900/0397

Effective date: 19810611

Owner name: MORCH, NIELS, BARRISTER, NR. FARIMAGSGADE 3, 1364

Free format text: ATTESTATION FROM THE PROBATE COURT, THE MARITIME AND COMMERCIAL COURT, APPOINTING ASSIGNEES AS TRUSTEES.;ASSIGNOR:H. NIELSEN & SON MASKINFABRIK A/S, BANKRUPT.;REEL/FRAME:003900/0399

Effective date: 19810706

Owner name: KNUDSEN, S. SKOV, BARRISTER, VIMMELSKAFTET 47, 116

Free format text: ATTESTATION FROM THE PROBATE COURT, THE MARITIME AND COMMERCIAL COURT, APPOINTING ASSIGNEES AS TRUSTEES.;ASSIGNOR:H. NIELSEN & SON MASKINFABRIK A/S, BANKRUPT.;REEL/FRAME:003900/0399

Effective date: 19810706

Owner name: NIELSEN, BENT, BARRISTER, FREDERIKSGADE 17, 1268 C

Free format text: ATTESTATION FROM THE PROBATE COURT, THE MARITIME AND COMMERCIAL COURT, APPOINTING ASSIGNEES AS TRUSTEES.;ASSIGNOR:H. NIELSEN & SON MASKINFABRIK A/S, BANKRUPT.;REEL/FRAME:003900/0399

Effective date: 19810706

Owner name: PEDERSHAAB MASKINFABRIK A/S,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:H. NIELSEN & SONS MASKINFABRIK A/S A COMPANY OF DENMARK;REEL/FRAME:003900/0397

Effective date: 19810611

Owner name: MORCH, NIELS, BARRISTER,(TRUSTEE IN THE ESTATE OF

Free format text: ATTESTATION FROM THE PROBATE COURT, THE MARITIME AND COMMERCIAL COURT, APPOINTING ASSIGNEES AS TRUSTEES;ASSIGNOR:H. NIELSEN & SON MASKINFABRIK A/S, BANKRUPT.;REEL/FRAME:003900/0399

Effective date: 19810706

Owner name: KNUDSEN, S. SKOV, BARRISTER, (TRUSTEE IN THE ESTAT

Free format text: ATTESTATION FROM THE PROBATE COURT, THE MARITIME AND COMMERCIAL COURT, APPOINTING ASSIGNEES AS TRUSTEES;ASSIGNOR:H. NIELSEN & SON MASKINFABRIK A/S, BANKRUPT.;REEL/FRAME:003900/0399

Effective date: 19810706

Owner name: NIELSEN, BENT, BARRISTER, (TRUSTEE IN THE ESTATE O

Free format text: ATTESTATION FROM THE PROBATE COURT, THE MARITIME AND COMMERCIAL COURT, APPOINTING ASSIGNEES AS TRUSTEES;ASSIGNOR:H. NIELSEN & SON MASKINFABRIK A/S, BANKRUPT.;REEL/FRAME:003900/0399

Effective date: 19810706