US2681158A - Treating apparatus - Google Patents

Description

June 15, 1954 K. I. HENRIKSON 2,681,158

TREATING APPARATUS Filed Aug. 51, 1950 4 Sheets-Sheet l [X gum I ATTORNEY June 15, 1954 K. 1. HENRIKSON 2,681,158

TREATING APPARATUS Filed Aug. 51, 1950 4 Sheets-Sheet? 55 48 710 71 56 I u| u 110 53 a4. 57 44 711 so 5 Ci 3 40 66 111 30 D 25 34 72 ms .57. me

BY a

ATTORNEY June 15, 1954 Filed Aug. 31, 1950 K. I. HENRIKSON TREATING APPARATUS 4 Sheets-Sheet 5 IN VE NTOR ATTORNEY June 15, 1954 K. I. HENRIKSON 2,681,158 TREATING APPARATUS Filed Aug. 31, 1950 4 Sheets-Sheet 4 INVENTOR IKML- Z HE/WMM/V ATTORNEY Patented June 15, 1954 UNITED STATS TENT OFFICE TREATING APPARATUS Nevada Application August 31, 1950, Serial No. 182,601

6 Claims.

This invention relates to an apparatus for cooling heated material. More particularly it is concerned with providing an apparatus which constitutes an improvement over that disclosed in Patent 2,480,726 issued August 30, 1949, and which comprised a rotating, cooling bin designed for cooling material such as coke, cement clinker, burnt lime and the sinter discharged from sintering machines.

As in the case of the apparatus disclosed in Patent 2,480,726 issued August 30, 1949, this invention will be described as one particularly adapted for cooling sinter discharged from a sintering machine, it being understood, however, that within the broader aspects of the invention it may be. used for cooling numerous other rnaterials some of which have been referred to above.

One of the primary objects of this invention is to provide novel means for supporting the cooling bin at the center thereof.

Another object of this invention is to provide novel means for supporting the bin along its outer periphery.

Another object of the invention is to provide an annular cooling bin conical in cross section, located along the outer periphery of a wheel like frame.

A further object of the invention is to provide an improved driving arrangement for rotating the bin.

Another object of the invention is to provide a cooling bin having an annular guard mounted above and adiacent the upper extremity of the inner retaining wall of the bin.

A still further object of the invention is to provide novel means separate from the bin structure for retaining the material to be cooled upon the horizontal shelf portion of the bin prior to its removal by plough or scraper.

These and other objects are accomplished by providing a cooling apparatus generally comprised of a rotatable wheel-like frame consisting of truss-type spokes or segments and adapted to rotate about a vertical axis. A substantially annular bin structure conical in cross section is located along the outer periphery of the frame a jacent the outer extremities of the truss type segments. The bin structure includes a circular, downwardly and outwardly inclined, imperforate, inner partition or wall and a circular, down wardly and inwardly inclined imperforate, outer partition or wall. The inner partition is of substantially greater width than the outer partition. A horizontal, annular, platform or shelf extends outwardly from the base of the inner wall to a point beyond the lower extremity of the outer wall. Means are provided for supporting and rotating the frame, which means include a central bearing member to which the central or hub portion of the frame is removably attached andv a plurality of alternately spaced idler and drive wheels circumferentially located below the outer periphery of the frame and adapted to frictionally engage a track mounted on the underside of the frame. Side guards which are separate from the frame are also provided to prevent the material deposited upon the platform from being displaced during a portion of the rotation of the frame. A plurality of ploughs each one of which is positioned at a predetermined point along the outer periphery of the frame and in spaced relationship to one another serve to remove the material deposited upon the platform.

Other objects and advantages will become apparent by reference to the drawings wherein:

Figure 1 is aplan view partly diagrammatic of the improved cooling bin assembly and associated parts.

Figure 2 is a-side elevational view partly diagrammatic of the cooling bin assembly and associated parts taken along lines 22 of Figure 1.

Figure 3 is a partially sectional, and partially perspective View of the cooling bin.

- Figure 4 is a plan view of the idler and drive wheels mounted below and along the outer periphery of the bin.

Figure 5 is an enlarged sectional view of one form of side guard that may be used to hold the material on the horizontal shelf during rotation of the bin.

Figure 6 is another plan View of the cooling assembly; showing the wheel-like arrangement of the parts thereof.

Figure '7 is an enlarged sectional view of the center bearing and supporting members shown in Figure 3.

With further reference to the drawings and particularly Figuires 1 and 3 the cooling bin frame consists of a structural steel frame 5 generally comprised of a plurality of spoke-like segments A which extend radially outwardly from the center of the frame. Each segment is in the form of a truss B. Mounted along the outer periphery of the frame at the extremity of the segments A is an annular cooling bin C. The lower, inner extremity of each segment A is joined to a central casting or bearing member 1) mounted on a suitable base E. The assembly is rotated by means of aplurality of drive wheels F located below the frame.

Each segment A is comprised of a horizontal floor I beam affixed to and extending radially outward from a circular hub or casting member I2. The casting member 12 may be of any suitable configuration. Preferably it is so constructed as to have an outer and annular depending flange portion Hi, joined to the wall 56 of the castings central cup portion i8 by means of a plurality of spoke-like webs 28, which extend radially outward from cup i8 and are integral with the inner wall I 6 and flange 1 3. Each floor I beam H3 is fastened at its inner extremity to the depending flange I l and top 2 1 of the casting l2 by means of bolts 28 and 22, the bolts 2|! being inserted through the upper flanges of the I beam and the circular cover or top 24 and the bolts 22 being thrust through the depending flange It of the casting and rectangular plates 28 which have been previously welded to the upper and lower flanges and web as of the I beam H! on both sides of the beam.

The central cup portion I8 of the casting i2 is provided with an aperture 32 at the bottom thereof which fits over an upstanding shaft or bearing 35, that has been previously anchored or keyed by a plurality of keys or pins 33 to a steel support 36. This support in turn is secured to a concrete base 38. A circular steel cap or bearing housing Q9 fits over shaft 3 3 within the cup portion I8 and when fastened to casting I2 by bolts 3i serves to secure the hub or casting (2 upon the shaft 34. A roller bearing 52 placed between the inner wall of the cap and the shaft 3% insures freedom of movement of the casting 12 about shaft 34.

Associated with each floor beam 18 are a plurality of diagonal bracing beams A3, at, and it which are secured to the upper flanges or faces of the floor beams. These braces in turn support a horizontal arm d6 of generally I beam configuration, the outer brace 43 also acting as a support for an extension 48 for each arm 5%. A depending arm 5% fastened to each extension 43 extends downwardly therefrom in an inwardly direction. The inner extremities of the horizontal arms as have their upper and lower flanges or faces bolted to circular plates 52 and 53 respectively. These plates are held together by a suitable locking pin 55. If desired, curved stiff eners 55 may be inserted between and attached to each arm is at a short distance outwardly from plates 52 and 53. A circular partition or wall of plate steel 5? is secured upon the upper faces or flanges of the diagonal beams 53 and extends upwardly therealong from the base of beams 43 to an annular guard 58 also of steel plate mounted above the assembly adjacent the point where the diagonal braces 43 join the arms 45. This partition 5? forms an inner retaining wall for the bin and xtends in a downwardly and outwardly direction. The portions of the floor beams iii projecting outwardly beyond bracing beams 43 are likewise covered by steel plate to form an annular horizontal, receiving shelf 8%. Cross beams 82 may also be placed between the floor beams at this point to further strengthen the frame assembly at its outer periphery.

Another circular partition 64 of plate steel is secured to the upper faces or flanges of the depending arms EE and extends downwardly therealong from one end of the arm to the other. This partition forms an inwardly, inclined, outer retaining wall which together with the horizontal shelf 60 and outwardly inclined, inner retaining wall 5'? form an annular cooling bin C, which is substantially conical in cross section, along the outer periphery of the steel assembly 5.

Inclining the outer retaining wall inwardly greatly facilitates the flow of sinter material initially deposited in the bin toward the inner part of horizontal shelf 60, whence it is ultimately removed after having been cooled.

The horizontal shelf Eli may be advantageously lined with a refractory shelf covering 58 conveniently formed of fire bricks, laid thereon in a suitable manner and extending from the base of the inner retaining wall 51 to the outer edge of the shelf 53. A similar refractory covering may also be placed. over the inner wall 51', if desired.

Because of the rather sharp inclination of the inner wall 5'! and outer wall fi l the material to be cooled will flow rapidly downward through the bin until it becomes deposited upon the horizontal shelf 5B.

The sharp inclination of both Walls 5'! and B4 prevents any great quantity of hot sinter from accumulating along either wall. Since the angle of inclination of both walls is substantially the same a more even flow of the hot sinter material from the top of the bin to shelf 6i} will also be effected. As a result the cooled sinter will become more evenly distributed upon the shelf whence it is then removed.

Referring to Figures 2- and 4 the means used for driving or rotating the cooling bin assembly generally comprise 3 or more drive wheels 58, mounted in suitable cradles it secured to a concrete base 8 Each drive wheel is coupled to a drive shaft 12 connected to an electric motor 14 through a series of gears and couplings i5. Located between each drive wheel is a series of idler wheels '55, which by means of springs 59 are resiliently mounted in cradle or supporting members f8 secured to the concrete base 84. Similar springs may also be used to resiliently mount the driving wheels 58. The driving wheels 63 and idler wheels '35 are arranged cicumferentially, underneath the cooling bin assembly and are adapted to frictionally engage an annular track 82 mounted on the underside of the bin. This track is secured at various points to the lower faces or flanges of relatively short I beams 85, whose upper faces or flanges are secured to steel plates 86, the latter of which extend between and are connected to floor beams iii. This circumferential arrangement of the drive and idler Wheels below the outer periphery of the cooling bin assembly permits efficient rotation of the bin.

. Moreover, these wheels simultaneously serve as supports for the outer section of the assembly, which is subjected to the most weight, since that part of the assembly which comprises the annular cooling bin, is located substantially directly over these wheels.

The springs 86 in the cradles or hearing members 7t and T8 or the wheels allow the wheels to absorb hard impacts and shocks such as may be caused by excessive or uneven loading of the bin at one or more points. As a consequence of this the springs also assist in absorbing various shearing stresses which might otherwise be placed from time to time on the central shaft 34 to which central casting I2 is connected.

The use of a central hub or casting. member l2 to which the floor beams i6 are connected, together with the use of circular plates 52 and 53 to which the upper arms 45 are joined results in various sections of the assembly being securely joined together, thereby increasing the rigidity of the structure as a whole. When all the segments have been joined together in the center as above described each individual segment tends to strengthen and reinforce the others.

Various reinforcing members can also be used, if desired, to further strengthen the assembly such as horizontal bracing beams 88 which may be fastened to the lower flanges of cross beams s2 located below shelf 551. A plurality of supporting and reinforcing I beams 99 may also be mounted between each diagonal bracing beam 43 by being fastened at one end to various struts 92 located between and fastened at each end to a separate diagonal beam it, and by being fastened at the other end to an I beam 52' located below shelf 58 at the juncture of shelf 59 and wall 51. Similar reinforcing I beams l 68 may also be mounted between the depending arms 5G by being fastened at each end to channel shaped stringers Ill) and l l l.

A channel shaped wearing sleeve or covering I I5 which may be formed of cast iron or other suitable material may advantageously be used to cover the extensions i=3 on arms 6 to take the wear incident to movement of the sinter thereover, that being desirable since the sinter in many cases is highly abrasive in character.

Any suitable means may be used to supply the material to be cooled to the rotating bin such as by a chute 52%. When the material to be cooled is hot sinter a machine or apparatus similar to that disclosed in Patent 2,480,726 may be used for discharging the sinter into the cooling bin.

The sinter material to be cooled is discharged upon the inclined surfaces or walls El and 6 and slides or flows downward onto the horizontal shelf portion 5:) of the bin. It will be noted that the remove the material it is obvious that more cooled material can be removed during a given length of time than would occur if but one plough were used, with the result that more material can be fed to the bin to take the place of that which has been removed. In this Way without increasing the size of the bin, its capacity can be increased.

The employment of a plurality of ploughs also permits continuous use of the cooling bin since, if one plough needs repair the others will still remain in operation, and there will be no need to stop the bin during the period of repair.

By placing the ploughs at predetermined spaced points along the outer periphery of the bin and at varying distances from discharge chute 12b, the rate of cooling of the sinter can be more eiliciently controlled, in the sense that removal of the sinter at diiferent points from the feeder chute by one or more ploughs means that different periods for cooling are employed all of which is dependent upon the net results desired.

Referring to Figure 1 two ploughs are shown. Each plough or scraper is pivotally connected to a post 95- disposed to one side of the bin. Each scraper is adjustable and is held in adjustment by associated screw adjusting means 91, including the handwheels 98. The scrapers 94 are d sposed a short distance abov the upper face of the shelf portion of the bin, so as to remove therefrom sinter material or the like resting thereon. The sinter material thus removed is deflected into a hopper 95 associated with each plough. Each hopper is provided with an outlet opening its overlying a belt conveyor it! of any suitable material. The hopper t9 and belt conveyor are located in a pit I39 located beneath the cooling bin assembly which is reached by ram or stair-ways I 3 i.

By the time the loos or block sinter is removed from the bin it has been sufficiently cooled so as to avoid the danger of injury to the conveyor and may be then safely handled thereby so as to be transported to a desired point for further treatment or for storage.

If desired a suitabl number of spray pipes I40 may be disposed above the main or conical portion of the bin for spraying cooling water upon the sinter or other hot material thereon, to assist in th cooling operation. The particular loca tion of these pipes with respect to the ploughs and/or the machine which initially discharges the hot material into the cooling bin depends upon the particular amount of cooling desired.

In order to restrain the material on the shelf ill from displacement, during rotation of the bin, a sectionalized annular side guard m2 is mounted along side the bin. Referring to Figures 1 and 5 it will be noted that each section of the side guard is comprised of a channel iron M34. The two flanges m5 of channel iron Hi l are welded to a plate 13E. This plate is welded or bolted to a backing plate Eii'i secured to an arm is which in turn is fastened to the upper extremity of structural supports 5 l2.

Openings H3 are provided in the side guards to permit the ploughs it to be swung inwardly and over the shelf 65.

These side guards prevent the material deposited upon the shelf from being displaced during rotation of the bin until it is removed by the ploughs.

From the above description it will be observed that on of the important advantages resulting from the use of the improved type of cooling bin is the fact that a more even flow of th sinter from the top the bin to the bottom is effected. This allows better more even rate of cooling and causes a more equal distribution of the cooled sinter upon shelf 6% Supporting the assembly at its center through the medium of a central bearing as well as along its outer periphery provides the bin assembly with greater rigidity and strength.

The utilization of an annular guard 53 along the top of the bin assembly prevents the hot sinter which is being discharged into the cooling bin from falling outside of the bin and on the various unprotected elements of the assembly or its associated parts.

It is an important advantage of this invention that material such as sinter blocks can be handled during cooling with a minimum amount of breakage and with very little, or no production of fines. It is another advantage that heated material can be suhici-ently cooled before going to a conveyor belt that the latter does not undergo excessive wear, or destruction, by contact with the heated product.

Various changes in the construction and arrangement of the parts may be made in the invention without departing from the spirit or scope thereof and, accordingly, the invention is not to be taken as limited except by the appended claims wherein what is claimed is:

1. In a cooling machine of the character described a rotating bin structur comprised of an annular downwardly and outwardly inclined inner wall and an annular downwardly and inwardly inclined outer wall said inner well being of substantially greater width than said outer wall, said outer all providing a continuously unbroken surface from the top to the bottom thereof for the material in contact the wall, a substantially horizontal refractory lined shelf extending outwardly from the base of said inner wall and beyond the lower extremity of said outer an upright central bearing member to which said rotating bin structure is rotatably and supportingly atta hed, a peripheral track mounted on the undercarriage of said bin structure, a plurality of drive wheels for frlctionally engaging said track, a plurality of idler wheels frictionally said track alternately with said drive wheels, both sair drive and idler wheels also serv: lg to support the outer periphery of said bin structure, and means for resiliently mounting said drive idler wheels.

2.. In a cooling machine of the character described a rotating bin structure comprised of an annular downwardly and inwardly inclined outer ."3

wall and an annular downwardly and outwardly inclined inner wall said inner wall being of substantially greater width than said outer wall, said outer wall providing a continuously unbroken supporting surface from the top to the bottom thereof for the material in contact with the wall, a substantially horizontal shelf extending outwardly from the base of said inner wall and beyond the lower extremity of said outer wall, an annular guard mounted adjacent the upper extremity of said inner wall, an upright central bearing member to which said rotating bin structure is supportingly attached, a peripheral track mounted on the undercarriage of said bin structure, a plurality of drive wheels for frictionally engaging said track, a plurality of idler wheels adapted to frictionally engage said track alternately with said drive wheels both said drive and idler wheels also serving to support the outer periphery of said bin structure and means for resiliently mounting said drive and idler wheels.

3. In a cooling machine of the character described a rotating bin structure comprised of an annular downwardly and outwardly inclined inner wall and an annular downwardly and inwardly inclined outer wall, said inner wall being of substantially greater width than said outer wall, said outer wall providing a continuously unbroken supporting surface from the top to the bottom thereof for the material in contact with the wall, a substantially horizontal shelf extending outwardly from the base of said inner wall and beyond the lower extremity of said outer wall, an upright central bearing member to which said rotating bin structure is supportingly attached, a track mounted on the undercarriage of said bin structure along the outer periphery thereof, a plurality of drive wheels for frictionally engaging said track, a plurality of idler wheels adapted to frictionally engage said track alternately with said drive wheels, both said drive and idler wheels also serving to support the outer periphery of said bin structure, means for resiliently mounting said drive and idler wheels,

8 and means for removing the material deposited upon said shelf.

4. In a cooling machine of the character described a rotating bin structure comprised of an annular downwardly and outwardly inclined inner wall and an annular downwardly and inwardly inclined outer wall, said outer wall providing a continuously unbroken supporting surface from the top to the bottom thereof for the material in contact with the wall, a substantially horizon.- tal shelf extending outwardly from the base of said inner wall to a point beyond the lower extremity of said outer wall, an upright central bearing member to which said rotating bin structure is supportingly attached, a track mounted on the undercarriage of said bin structure along the outer periphery thereof, a plurality of drive wheels friotionally engaging said track, a plurality of idler wheels also adapted. to frictionally engage said track alternately with said drive wheels, both said drive and idler wheels also serving to support the bin structure, means for resiliently mounting said drive and idler wheels, and means for removing the material deposited upon said shelf including a plurality of plows each one of which is positioned at a predetermined point along the outer periphery of the bin structure in spaced relationship to each other.

5. In a cooling apparatus of the character described, a rotatable wheel-like frame having a hub portion journalled upon an upstanding hearing member and a plurality of truss-type segments extending radially outward therefrom, an annular, downwardly and outwardly inclined inner imperforate partition afiixed to the outer extremities of said truss-type segments, an annular, downwardly and inwardly inclined outer imperforate partition of less width than said inner partition also afixed to the outer extremities of said truss-type segments in spaced relationship with said inner partition, said outer partition providing a continuously unbroken supporting surfacefrom the top to the bottom thereof for the material in contact therewith, a horizontal shelf extending outwardly from the base of said inner partition and beyond the lower extremity of said outer partition, whereby a substantially annular bin structure, conical in cross-section, is formed along the outer periphery of said frame adapted to receive the material to be cooled, guard means mounted upon said truss-type segments adjacent the upper extremity of said inner partition, track means located on the underside of said frame adjacent the outer periphery thereof, means including a pluralit of drive wheels and idler wheels in contact with said track means for rotatably supporting said wheel-like frame, and means for resiliently mounting said drive and idler wheels.

6. In a cooling apparatus of the character described, a rotatable wheel-like frame having a hub portion journalled upon an upstanding bearing member and a plurality of truss-type segments extending radially outward therefrom, an annular, downwardly and outwardly inclined inner wall affixed to the outer extremities of said truss-type segments, an annular, downwardly and inwardly inclined outer wall of less width than said inner wall also affixed to the outer extremities of said truss-type segments in spaced relationship with said inner wall, said outer wall providing a continuously unbroken surface for the material in contact therewith, a horizontal deck extending outwardly from the base of the 9 10 inner wall to a point beyond the lower extremity displacement until it is removed therefrom by of said outer Wall, whereby an annular binstrucsaid plow means. ture, conical in cross-section, is formed along the outer periphery of said frame, track means References Cited in the fi Of this p e located on the underside of said Wheel-like frame 5 UNITED STATES PATENTS adjacent the outer periphery thereof, means in- N eluding a plurality of resiliently mounted drive ggi mm 0 t g wheels located circumferentially below said frame 1 058259 g? Z 1913 and adapted to frictionally engage said track 1464511 Stott 1923 means for rotating said frame, plow means for m 2054293 Mcclayil'i 1936 removing said material from said deck, and means 2307415 Malhiog s 5 1943 separate from said wheel-like frame for retain- 2480726 Greyson Aug. 30 1949 mg the material deposited upon sald deck agamst 2,480,727 Greyson Aug. 30, 1949

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