US2949634A - Briquetting roll - Google Patents
Briquetting roll Download PDFInfo
- Publication number
- US2949634A US2949634A US790884A US79088459A US2949634A US 2949634 A US2949634 A US 2949634A US 790884 A US790884 A US 790884A US 79088459 A US79088459 A US 79088459A US 2949634 A US2949634 A US 2949634A
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- US
- United States
- Prior art keywords
- roll
- inserts
- briquetting
- cavities
- slots
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- 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
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- 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
- B30B11/16—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using pocketed rollers, e.g. two co-operating pocketed rollers
- B30B11/165—Roll constructions
Definitions
- This invention relates to an improved roll construction for roll-type briquetting presses.
- a conventional roll-type briquetting press includes a pair of power driven rolls which are journaled on parallel axes and whose circumferential faces contain a series of mating cavities. The rolls are forced together under suitable spring loading, whereby as they rotate loose material fed between them is compacted within the cavities.
- Such presses may be used for briquetting hot abrasive materials under relatively high loads. For example iron ore fines may be briquetted while at a temperature as high as 2000 F. and under loads as great as 100,000 pounds per inch of effective roll width. When roll surfaces are subjected to such severe treatment, they wear rapidly and frequent replacement is necessary.
- An object of the present invention is to provide an improved briquetting roll whose circumferential face is formed with removable inserts which can be replaced when worn without replacing the remainder of the roll.
- a more specific object is to provide an improved briquetting roll in which the side walls of the cavities, the working faces most subject to wear, are formed on removable and replaceable inserts fixed within slots in the roll body.
- a further object is to provide an improved briquetting roll in which the working faces most subject to wear can be of harder material than the roll body without need for welding the parts together.
- Figure 1 is an end elevational view of a briquetting roll constructed in accordance with my invention, some of the inserts being removed to facilitate illustration of the roll body;
- Figure 2 is a top ure 1
- Figure 3 is a perspective view of one of the inserts.
- Figure 4 is a top plan view of a roll of modified construction.
- my briquetting roll includes a substantially cylindrical body 10, preferably of tool steel, and necks 12 extending therefrom.
- the roll body may be constructed by welding hard surfacing material on a suitable metal base.
- the circumferential face of the roll body 10 contains a plurality of uniformly spaced slots 13 which extend the full width of the body.
- the lands between these slots contain grooves 14 which extend circumferentially of the body and are of less depth than the slots 13.
- Inserts 15 are fitted within the respective slots and overhang the ends of the roll plan view of the roll shown in Figbody.
- These inserts may be formed of tool steel or castable high temperature wear resistant alloys which can be precision cast or shell molded to tolerances close enough to permit their use as cast.
- the overhanging portions of the inserts carry integral lugs 16 which engage the end faces of the body to hold the inserts against endwise movement.
- the extremities of the inserts carry integral ledges 17.
- a pair of garter springs 18 encircle the ledges 17 on opposite ends of the roll body to hold the inserts in place.
- the upper edges of each insert are truncated leaving a central ridge 19.
- the walls and bottoms of grooves 14 form end and bottom working faces 20 and 21, and the ridges 19 form side working faces 22 of the cavities in which briquettes are formed,
- Figure 4 shows a roll of modified construction which has a double series of briquette-forrning cavities around its circumference.
- the construction is similar to that already described, except that the roll body 10a and inserts 15a are wider, and the roll body carries a ridge 23 and the inserts carry ridge sections 24 separating adjacent cavities along the width of the roll.
- a briquetting roll comprising a substantially cylindrical body having uniformly spaced slots in its circumferential face extending the width of the body, and a groove extending around its circumference but being of less depth than said slots, respective inserts received in said slots, and means removably fixing said inserts to said body, said roll having briquette-forming cavities uniformly spaced around its circumferential face, each of said cavities having side, end and bottom working faces, said side Working faces being formed on said inserts, said end and bottom working faces being formed on said body by the walls and bottom of said groove.
- a roll as defined in claim 1 in which said inserts overhang the ends of said body, the overhanging portions of said inserts having lugs engaging the end faces of said body to prevent endwise movement of said inserts, and in which the means fixing said inserts to said body includes ledges formed on opposite ends of said inserts and springs encircling said ledges on opposite ends of said body.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolls And Other Rotary Bodies (AREA)
Description
Filed Feb. 3, 1959 lA/I/ENTGR EARL H. .SH/PLEY Affam ey United States Patett 2,949,34 Patented Aug. 23, 1960 BRIQUE'ITHVG ROLL Earl H. Shipley, Homewood, 111., assignor to United States Steel Corporation, a corporation of New Jersey Filed Feb. 3, 1959, Ser. No. 790,884 2 Claims. (Cl. 18-9) This invention relates to an improved roll construction for roll-type briquetting presses.
A conventional roll-type briquetting press includes a pair of power driven rolls which are journaled on parallel axes and whose circumferential faces contain a series of mating cavities. The rolls are forced together under suitable spring loading, whereby as they rotate loose material fed between them is compacted within the cavities. Such presses may be used for briquetting hot abrasive materials under relatively high loads. For example iron ore fines may be briquetted while at a temperature as high as 2000 F. and under loads as great as 100,000 pounds per inch of effective roll width. When roll surfaces are subjected to such severe treatment, they wear rapidly and frequent replacement is necessary.
An object of the present invention is to provide an improved briquetting roll whose circumferential face is formed with removable inserts which can be replaced when worn without replacing the remainder of the roll.
A more specific object is to provide an improved briquetting roll in which the side walls of the cavities, the working faces most subject to wear, are formed on removable and replaceable inserts fixed within slots in the roll body.
A further object is to provide an improved briquetting roll in which the working faces most subject to wear can be of harder material than the roll body without need for welding the parts together.
In accomplishing these and other objects of the invention, I have provided improved details of structure, preferred forms of which are shown in the accompanying drawing in which:
Figure 1 is an end elevational view of a briquetting roll constructed in accordance with my invention, some of the inserts being removed to facilitate illustration of the roll body;
Figure 2 is a top ure 1;
Figure 3 is a perspective view of one of the inserts; and
Figure 4 is a top plan view of a roll of modified construction.
As shown in Figures 1 and 2, my briquetting roll includes a substantially cylindrical body 10, preferably of tool steel, and necks 12 extending therefrom. Alternatively the roll body may be constructed by welding hard surfacing material on a suitable metal base. The circumferential face of the roll body 10 contains a plurality of uniformly spaced slots 13 which extend the full width of the body. The lands between these slots contain grooves 14 which extend circumferentially of the body and are of less depth than the slots 13. Inserts 15 are fitted within the respective slots and overhang the ends of the roll plan view of the roll shown in Figbody. These inserts may be formed of tool steel or castable high temperature wear resistant alloys which can be precision cast or shell molded to tolerances close enough to permit their use as cast. The overhanging portions of the inserts carry integral lugs 16 which engage the end faces of the body to hold the inserts against endwise movement. The extremities of the inserts carry integral ledges 17. A pair of garter springs 18 encircle the ledges 17 on opposite ends of the roll body to hold the inserts in place. The upper edges of each insert are truncated leaving a central ridge 19. The walls and bottoms of grooves 14 form end and bottom working faces 20 and 21, and the ridges 19 form side working faces 22 of the cavities in which briquettes are formed,
Figure 4 shows a roll of modified construction which has a double series of briquette-forrning cavities around its circumference. The construction is similar to that already described, except that the roll body 10a and inserts 15a are wider, and the roll body carries a ridge 23 and the inserts carry ridge sections 24 separating adjacent cavities along the width of the roll.
Rolls of my improved construction can be used in a conventional briquetting press, such as that shown in Komarek Patent No. 2,766,109. In such service the greatest wear takes place on the side Working faces 22 of the cavities. Since these working faces are formed on the inserts 15 or 15a, it is only necessary to remove and replace individual inserts when wear occurs. Thus my improved construction greatly facilitates roll maintenance without otherwise altering the structure or operation of a conventional briquetting press.
While I have shown and described certain preferred embodiments of my invention, it is apparent that other modifications may arise. Therefore, I do not Wish to be limited to the disclosure set forth but only by the scope of the appended claims.
I claim:
1. A briquetting roll comprising a substantially cylindrical body having uniformly spaced slots in its circumferential face extending the width of the body, and a groove extending around its circumference but being of less depth than said slots, respective inserts received in said slots, and means removably fixing said inserts to said body, said roll having briquette-forming cavities uniformly spaced around its circumferential face, each of said cavities having side, end and bottom working faces, said side Working faces being formed on said inserts, said end and bottom working faces being formed on said body by the walls and bottom of said groove.
2. A roll as defined in claim 1 in which said inserts overhang the ends of said body, the overhanging portions of said inserts having lugs engaging the end faces of said body to prevent endwise movement of said inserts, and in which the means fixing said inserts to said body includes ledges formed on opposite ends of said inserts and springs encircling said ledges on opposite ends of said body.
References Cited in the file of this patent UNITED STATES PATENTS 538,475 Albrecht Apr. 30, 1895 2,803,040 Robert et al Aug. 20, 1957 FOREIGN PATENTS 505,979 France May 20, 1920 567,069 Great Britain Jan. 26, 1945
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US790884A US2949634A (en) | 1959-02-03 | 1959-02-03 | Briquetting roll |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US790884A US2949634A (en) | 1959-02-03 | 1959-02-03 | Briquetting roll |
Publications (1)
Publication Number | Publication Date |
---|---|
US2949634A true US2949634A (en) | 1960-08-23 |
Family
ID=25152018
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US790884A Expired - Lifetime US2949634A (en) | 1959-02-03 | 1959-02-03 | Briquetting roll |
Country Status (1)
Country | Link |
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US (1) | US2949634A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3830612A (en) * | 1973-03-05 | 1974-08-20 | Komarek K Inc | Segmented briquetting roll structure |
USRE28581E (en) * | 1970-11-10 | 1975-10-28 | Roller-type press | |
US4732555A (en) * | 1984-12-11 | 1988-03-22 | Whitelaw Thomas W | Tile making apparatus |
AT397216B (en) * | 1991-02-19 | 1994-02-25 | Zavernik Peter | Method and apparatus for producing three-dimensional shaped bodies from a sheet-like web made of expanded metal |
US5372494A (en) * | 1994-01-25 | 1994-12-13 | Reynolds Metals Company | Adjustable perforating roller for sheet material |
US20070216072A1 (en) * | 2004-10-19 | 2007-09-20 | Posco | Apparatus for Manufacturing Compacted Irons of Reduced Materials Comprising Fine Direct Reduced Irons and Apparatus for Manufacturing Molten Irons Using the Same |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US538475A (en) * | 1895-04-30 | Machine for making artificial fuel | ||
FR505979A (en) * | 1919-11-12 | 1920-08-11 | Dandridge Hunt Bibb | Improvements to molding machines |
GB567069A (en) * | 1943-03-31 | 1945-01-26 | Frank Ford Tapping | Improvements in or relating to rollers for moulding presses |
US2803040A (en) * | 1950-04-03 | 1957-08-20 | Globe Roofing Products Co Inc | Apparatus for graining flat asphaltic preset materials and the like |
-
1959
- 1959-02-03 US US790884A patent/US2949634A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US538475A (en) * | 1895-04-30 | Machine for making artificial fuel | ||
FR505979A (en) * | 1919-11-12 | 1920-08-11 | Dandridge Hunt Bibb | Improvements to molding machines |
GB567069A (en) * | 1943-03-31 | 1945-01-26 | Frank Ford Tapping | Improvements in or relating to rollers for moulding presses |
US2803040A (en) * | 1950-04-03 | 1957-08-20 | Globe Roofing Products Co Inc | Apparatus for graining flat asphaltic preset materials and the like |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE28581E (en) * | 1970-11-10 | 1975-10-28 | Roller-type press | |
US3830612A (en) * | 1973-03-05 | 1974-08-20 | Komarek K Inc | Segmented briquetting roll structure |
US4732555A (en) * | 1984-12-11 | 1988-03-22 | Whitelaw Thomas W | Tile making apparatus |
AT397216B (en) * | 1991-02-19 | 1994-02-25 | Zavernik Peter | Method and apparatus for producing three-dimensional shaped bodies from a sheet-like web made of expanded metal |
US5372494A (en) * | 1994-01-25 | 1994-12-13 | Reynolds Metals Company | Adjustable perforating roller for sheet material |
US20070216072A1 (en) * | 2004-10-19 | 2007-09-20 | Posco | Apparatus for Manufacturing Compacted Irons of Reduced Materials Comprising Fine Direct Reduced Irons and Apparatus for Manufacturing Molten Irons Using the Same |
US7622071B2 (en) * | 2004-10-19 | 2009-11-24 | Posco | Apparatus for manufacturing compacted irons of reduced materials comprising fine direct reduced irons and apparatus for manufacturing molten irons using the same |
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