US2689976A - Apparatus for the briquetting of granular or powdery material - Google Patents

Apparatus for the briquetting of granular or powdery material Download PDF

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Publication number
US2689976A
US2689976A US138972A US13897250A US2689976A US 2689976 A US2689976 A US 2689976A US 138972 A US138972 A US 138972A US 13897250 A US13897250 A US 13897250A US 2689976 A US2689976 A US 2689976A
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United States
Prior art keywords
ring
disk
briquetting
shaft
slot
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Expired - Lifetime
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US138972A
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English (en)
Inventor
Hubmann Otto
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Individual
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Individual
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Publication of US2689976A publication Critical patent/US2689976A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/20—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring
    • 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
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/113—Inner roll

Definitions

  • the invention relates to an apparatus for the briquetting of granular or powdery material.
  • Exter-presses For briquetting of materials like coal-fines or powdery lignite normally stampers, so-called Exter-presses, of various design or roller presses with two rolls have been used.
  • Exter-presses For the briquetting of very fine lignite a roller-ring press has been developed, by which briquettes of a very high density andv weather-resisting quality can be produced.
  • this kind of a press is exceedingly expensive as its large rollering is made of high-grade steel, which can be manuiactured and repaired only on special lathes not available in briquetting factories. Such presses have, therefore, been employed only to a limited extent.
  • This invention relates to an apparatus without the great disadvantages of the roller-ring press but without giving-up the favourable effect of the roller-ring and disk principle.
  • it has been possible to replace the large rotating vertical ring of 12 feet diameter of the roller-ring press by a stationary horizontal ring of smaller diameter e. g. of only 4 feet diameter.
  • a vertical shaft rotates, which carries a horizontal disk and by means of an eccentric on the shaft this disk rolls along the inside of the ring forming a slot between the ring and the disk.
  • this slot granulated material is fed from above and the material is compressed to an endless string of briquettes, as this slot is continuously widened and narrowed by the'eccen'trically rotating disk.
  • the briquettes, formed in the slot drop to the bottom of the apparatus after having been broken from the endless string by asuitable device.
  • the small stationary ring used in the invention does not require any bearings and in spite of its small dimensions the leading angle of the briquetting slot is even more favourable than that of the known roller-ring press, the inside-diameter of the ring and the outside diameter of the disk being nearly the same in the apparatus of the invention.
  • the ring is fastened to a cast steel frame.
  • a vertical shaft rotates coaxially with the ring.
  • This shaft carries on its upper end an eccentric crank shaft and on its lower end a spur gear by which it is rotated in the usual way.
  • the horizontal disk is moved by the eccentric crank shaft in such a way that when the main shaft is rotated the disk rolls along the inside of the stationery ring due to the friction of the material fed into the slot.
  • the periphery of the ring is stepped upward and that of the disk downward,
  • a hopper is arranged above the ring and the main shaft is extended into the hopper and one or several bars are fitted to this upper part of the shaft which thoroughly mix the material in the hopper and if suitably designed also serve to shove the material into the slot in uniform quantities.
  • the mixing effect which is essential in the case of briquetting coal with a binder can be increased if the inner wall of the hopper is also fitted with bars or arms.
  • the slot is preferably closed at the side by a tongue-like bar fixed to the main shaft and sliding on the disk during its rotation.
  • the briquettes are formed in an endless string, which can be subdivided by teeth provided on the periphery of the disk and then broken into individual briquettes.
  • a knife or scraper is fixed on the bar or directly on the main shaft. The knife scrapes ofi the string from the ring and breaks it up into briquettes, which drop to the bottom of the frame.
  • superheated steam or hot gases may be introduced into the hopper.
  • the axial bearing of the disk is connected with the eccentric through intermediary springs or a hydraulic device in a manner known per se. If the latter is used the pressure can be controlled perfectly and a uniform quality of the briquettes is maintained even if the quantity of material introduced fluctuates considerably.
  • Fig. 1 is a vertical section through the press.
  • Fig. 2 is a section along line I-I, and
  • Fig; 3 is a section along line IIII in Fig. 1.
  • Fig. 4 is a horizontal section showing the disc mounted on an eccentric containing a hydraulic device.
  • the vertical shaft 3 is mounted in bearings.
  • the frame is closed on top by a ring 2.
  • the disk l is mounted on the eccentric 2 I, surrounding part of the shaft 3 by means of the bearing ii.
  • the disk 4 rests directly on the bottom of the frame I by means of the thrust bearing 5.
  • the shaft is rotated by a spur gear 8 in the usual way.
  • fiat or elliptic springs 9 there are arranged on one side of part 5 several fiat or elliptic springs 9 so that the pressure disk-is-resiliently supported and can yield somewhat when excessive- 1y high pressures occur on the narrowest part 22 of the press channel.
  • a hood H3 is fastened to the crank by means of a key 2%.
  • This hood carries an arm I l, Which extends into the hopper I2 placed. above the ring.
  • the walls of the hopper l2 are also fitted with arms, or bars i3.
  • Fixed to the hood I53 by means of arms Hi and rotatable therewith is the tongue l5, which during rotation closes or shields a part of the slot 2'6 between the ring and the disk to the outside in a horizontal direction.
  • Attached to the tongue is a scraper it, which loosens thebriquettes from the ring and drops them into the annular space 25 which is formed by frame l and a cylindrical projection 23 provided on this frame.
  • a shovel l1 fixed to the tongue l5,'moves the briquettes to the chute I8.
  • Pipe i9 is connected to the hop-per l2 and serves for the introduction of hot gases into the material.
  • the disk 4 When the shaft 3 is rotated, the disk 4, due to the friction of the material filled into the slot 27 between the ring and the disk, rolls along the inside of the ring and'the slotsis opened and closed periodically during the eccentric rotation of the disk. Depending on the eccentricity of the crank and the-width of the slot a pressure up to 2500 atmospheres isexertedon the material.
  • the material preferably mixed before in the hopper by the movement of the. 'mixingarms II. and i3,
  • the string of briquettes 30, which preferably is subdividedby the effect of ribs 28 provided on the disk,- is broken into individual briquettes by the scraper it according to the grooves produced by those ribs.
  • the briquettes fall into the space 2i ⁇ and are transported to the discharging-chute 18 by the rotating shovel H.
  • the material to be briquetted may pass freely between the tongue and disk for compression between the disk and ring and the briquettes formed will be maintained separate from the material to be briquetted by the tongue on the opposite side of the disk.
  • a hydraulic cylinder and piston may be provided. Such an arrangement is shown in Fig. 4.
  • the cylinder is defined in the part 5, and a piston 24 is fitted in this cylinder.
  • the fluid may be passed under pressure through i? to press the piston 24 out of the cylinder 25 and thus resiliently urge the eccentric member radially outwardly in the eccentric direction.
  • briquettes With the -apparatus according to the invention it is possible to produce briquettes from materials, which could not be briquetted in the usual types of presses. Very fine powdered coals can be briquetted without any binder and smokeless briquettes of a high quality can be made, saving the cost of binder. Coking-coals and mixtures of such with coke or ores can be briquetted, which opens a new possibility for producing metals from such heat resisting briquettes.
  • the apparatus of the invention requires less power due to the very efficient method of compressing the material.
  • the closed cycle of the power exerted in the press makes a relatively small device possible, which permits; the application of a very high pressure.
  • Apparatus for briquetting finely divided material comprising a fixed horizontal ring, a vertical rotatable shaft coaxial with said ring, an.
  • eccentric member connected to said shaft, a horizontal disk positioned inside said ring and mounted for free rotation on said eccentric member, said ring and disc defining .a circumferential briquetting channel therebetween for the formation of briquettes therein, means for feeding material to said channel, and means for removing briquettes from said channel.
  • Apparatus according to claim 2 including a tongue connected for rotation with said shaft and positioned for partially closing said briquetting channel in a horizontal direction.
  • Apparatus according to claim 1 in which said means for removing briquettes from said briquetting channel include a scraper connected to I said tongue and positioned for removing briquettes from said briquetting channel.
  • Apparatus for briquetting finely divided material comprising a horizontal ring fixed in a frame, a vertical rotatable shaft coaxial with said ring, an eccentric member connected to said shaft, a horizontal disc positioned inside said ring and mounted for free rotation on said eccentric member, said horizontal disc being supported at 6 the bottom of the frame by a horizontal thrustbearing, said ring and said disc defining a circumferential briquetting channel therebetween for the formation of briquettes therein, a central hopper positioned above said ring, at least one bar gaseous medium into said central hopper.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
US138972A 1949-01-20 1950-01-17 Apparatus for the briquetting of granular or powdery material Expired - Lifetime US2689976A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE664299X 1949-01-20

Publications (1)

Publication Number Publication Date
US2689976A true US2689976A (en) 1954-09-28

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ID=6589398

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Application Number Title Priority Date Filing Date
US138972A Expired - Lifetime US2689976A (en) 1949-01-20 1950-01-17 Apparatus for the briquetting of granular or powdery material

Country Status (4)

Country Link
US (1) US2689976A (US20020051482A1-20020502-M00012.png)
BE (1) BE493416A (US20020051482A1-20020502-M00012.png)
FR (1) FR1012779A (US20020051482A1-20020502-M00012.png)
GB (1) GB664299A (US20020051482A1-20020502-M00012.png)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2966699A (en) * 1955-10-17 1961-01-03 Coal Industry Patents Ltd Ring roll presses

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU539431A (en) * 1931-12-15 1932-05-12 An improved roller press
US1931759A (en) * 1932-08-08 1933-10-24 Fred W Hasing Briquetting machine
US1937174A (en) * 1932-03-16 1933-11-28 Vilter Mfg Co Art of briquetting materials
US2412299A (en) * 1942-11-21 1946-12-10 Southern Friction Materials Co Molding press

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU539431A (en) * 1931-12-15 1932-05-12 An improved roller press
US1937174A (en) * 1932-03-16 1933-11-28 Vilter Mfg Co Art of briquetting materials
US1931759A (en) * 1932-08-08 1933-10-24 Fred W Hasing Briquetting machine
US2412299A (en) * 1942-11-21 1946-12-10 Southern Friction Materials Co Molding press

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2966699A (en) * 1955-10-17 1961-01-03 Coal Industry Patents Ltd Ring roll presses

Also Published As

Publication number Publication date
GB664299A (en) 1952-01-02
BE493416A (US20020051482A1-20020502-M00012.png)
FR1012779A (fr) 1952-07-17

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