US828517A - Pulverizer. - Google Patents

Description

PATENTED AUG. 14, 1906.

G. G. SGOULLAR & "Eh E. HILL. .PULVBRIZER.

APPLICATION FILED FEB. 11 1901.

3 SHEETS-SHEET 1.

No. 828,517. PATBNTED AUG. 14, 1906. I G. O. SGOULLAR & E. B. HILL PULVBRIZER. APPLIOATION FILED ms. 11. 1901.

a SHEETB-SHBET 2.

N0. 828,517. PATENTED AUG. 14, 1906. G. 0. SOOULLAR. & E. E. HILL.

PULV ERIZBR.

APPLIGATION FILED FEB. 11.1901.

3 SHEETS-SHEET 3.

STATES PATENT OF ICE.

CHARLES C. SGOULLAR AND EDWARD E. HILL, OF CHICAGO, ILLINOIS.

. PULVERIZE v Specification of Letters Patent. Application filed February 11, 1901. Serial No. 46.900

Patented Aug; 14, 1906.

This invention relates to improvements'i'n a crushing or pulverizing machine, and while it is more especially designed and intended to be used for reducing coal to fine or comminuted particles yet it is applicable for and may be usedto comminute or grind to dust or flour ores or other products; and it consists incertain peculiarities of the construcuse the same, we will now proceed to describe it, referrmg 'tion, novel arrangement, and 0 eration of the various gifts thereof, as wil be hereinafter more lly set forth and specifically claimed.

The object of our invention is to rovide a pulverizer for reducing coal or ot' er products to a fine powder or dust which shall .be

simple construction, strong and durable, and efficient in operation.

In order to enable others skilled in the art to which our invention pertains to make and to the accompanying drawings, in which-- Figure 1 is a view, partly in elevation and partlyin section, of a pulverizer embodyin dicated by the arrows.

our invention. Fig. 2 is a central vertica sectional view, partly in elevation, taken on line 2 2 of Fig. 1 looking in the direction in- Fig. 3 is a detached plan view of the platform and conveyer employed for carrying the coal into and out of the rotatable cylinder-or drum. Fig. 4 is a similar view of the sieve used for separatin the finer particles from the-coarser ones an illustrating the mechanism for shaking the same." Fig. 5 is a plan view of a portion of the supportin -fra me, showing some of the antifriction-ro lers on which the rotatable cylinder rests; and Figs. 6, 7, and 8 are crosssectional views of a portion of the main cylinder and the crushing-rollers, showing modificationsin the manner of mounting the latter.

Similar letters refer to like parts throughout the diflerent views of the drawings.

A represents themain or supporting frame, which may be made of any suitable size, form, and material and" has vertically journaled thereon in suitable bearings a, a driving-shaft A, which is provided at its upper end with a .series of antifriction-rollers cated near the ends of the cylinder or drum 1 pulley A, to which power may be applied for operating the machine. J ournaled in suitable bearings.- a on the lower ortion or base of the main frame is an auxiliary shaft A on which is mounted a beveled gear a which meshes with a smaller and beveled gear a which is mounted on the same shaft on which the beveled gear a is mounted and which gear meshes with a beveled gear 0, on the ower end of the driving-shaft. The lower portion of the main frame is rovided with a which are lo B, which is provided at each of its ends with inwardlyextending annular flanges band referably has on its peri hery near each of Its ends a circumferentia rib or thickened portionb with which the rollers 12 impinge. As thecyli'nder B is not'journaled on a shaft, but rotates on the b (1 formed by the rollers b, it may be necessiy to provide means to prevent endwise movement of the cylinder,

'agid to accomplish this we'mayjprovide the lower portion of the main frame with'a series of rollers b journaled in pairs, asshown in Fi 2 of the drawings, so as to impinge the si es of one of the ribs '1) onthe outer surface of the cylinder. Located on the periphery of the cylinder at about its middle is a circumferential rack B, which meshes with a pinion b on the auxiliary shaft. Each end of the cylinder B is closed by means of 'a plateB which is fixed to themain frame and fits closely against theends of the cylinder, yet in such a manner as to permit of its rotation. On a shaft Bffjournaled' in suitable bearings, usuallyin the'headlates B is a crushing roller or cylinder whic may be made in two sections B and B as shown in Fig. '2 of the drawings. This cylinder is of solid metal and is very heavy and'rests directly on the inner surface of the cylinder or drum, within which is also located so as'to contact with-its inner surface an auxiliarycrushin roller or cylinder B, which is made of solid metal and is journaled on arms or bars 12 extending forwardly from the shaft B on which the larger crushing roller or cylinder is mounted. On one end of the. shaft B is mounted a gear I), which meshes with a gear I) on the shaft A and imparts rotary motion to the main crushing cylmderorroller.

Passing through :the headlates B and suitably journaled in paralle ismwith the shaft B and near the inner periphery of the drum or cylinder B is a shaft BY, on wh ich is' mounted within said cylinder a cylindrical brush 1)", preferably composed of metallic bristles. Just above this brush and extending from one head-plate B to the other is a bar I), to which is secured a blade or scraper b the free edge of which rests against the inner surface of the drum or cylinder and is for the purpose of scraping ofi any of the pulverized material which might adhere to the cylinder, as well as to form a guide for directing the course of the powder or pulverized material when thrown upwardly by the rapid revolution of the aforesaid brush, which is driven by means of a belt I), passing over a pulle b on one end of the shaft B and over a pul ey B journaled on the main frame.

The head-plates B are provided in their upper portions with horizontal openings 0 and below the same, but just above the crushing-rollers, with similar 0 enings c for the operation of the conveyer (E which comprises sprocket-chains c united together by means of slats 0 which chains pass over suitable idlers c c c and driving sprocket-wheels c, which are journaled on the main frame near the ends of the rotatable cylinder. In

the lower part of the openings c in the headplates is located a platform C, which extends outwardly some distance throu h one of said head-plates and is provided wit 'n the cylinder B with a diagonal slot c through which the crushed product may ass when being carried on the platform C y means of the slats or scrapers c of the conveyer. The shaft 0 on which the sprocket-wheels c are mounted, is driven by means of a crossed belt 'c, passing over a pulley c on said shaft and another ulley c on the driving-shaft.

Thei lers c are journaled on suitable arms d, which are pivotally secured at their u per ends to a support on the main frame an are drawn outwardly. by means of a spring d,

' connected at one of its ends to said arms and at its other end to the said support, so as to keep the chains of the conveyer taut.

Located below the platform C and witliin the rotatable cylinder B is a series of steampipes (1 which are arranged in rows inclined toward the brush 1), as is clearly shown in Fig. 1 of the drawin s, and which may be supplied with steam rom a suitable source. (Not shown.) Located beneath these pipes and in an inclined position is a platform (i which is secured at its upper end to a bar (1, extending from one head-plate to the other. Suspended by means of rods (i pivotally secured at their upper ends to bars cl, extending from one head-plate to the other or otherwise suspended, is asieve D, which inclines from the brush 1), as is clearly shown in Fi 1 of the drawings. One side of the sieve D is provided with a projection D, having a slot ,in which is located a crank d 'journaled on the main frame and driven by means of a sprocket-chain d, passing around a sprocketwheel d on the drivin -shaft and also around a wheel d" on the cran -shaft, which arrangment will cause the aforesaid sieve to e shaken or agitated, so as to separate the finer particles from the coarser and allowin the former to fall on a platform G which 1s located beneath the sieve and extends out through one of the openings 0 in one of the head-plates. The coarser particles retained by the sieve will be shaken therefrom in front of the crushing-roller B", so as to be again operated on. Extending through one of the head-plates into the cylinder B is an exhaustpipe E, which is provided with a longitudinal slot 6 for the admission of the flying dust, which may be drawn out of the cylinder through the pipe E to any desired point by means of a suction or exhaust fan attached thereto. (Not shown.)

The u per portion of the main frame is furnishedwith a ho per E for the purpose of receiving and cond ficting the coal or other product to a pair of corrugated rollers E, which are journaled parallel with one another just below the hopper and are driven by means of a beveled gear e on the main or driving shaft, which gear meshes with a beveled ear e on a shaft 6 which carries a ear e, w 'ch meshes with a gear 6 on the s aft of one ofthe said rollers. Journaled parallel with one another on the main frame below the corrugated rollers E are two smoothfaced rollers F, which receive the crushed product from the corrugated rollers through a chute F, located beneath the corrugated rollers. The "rollers F are driven by means of a beveled gear 9 on the driving-shaft, which gear meshes with a beveled gear g on a shaft g, which carries a gear 9 which meshes with a gear 9 on one of the shafts of said rollers. On the opposite end of the shaft on which the gear g is mounted is a pulley B over which the belt I), which operates the brush, passes and which belt also passes over idle pulleys f, journaled on the main frame at a suitable oint. Connected at its ends to the head-p ates B and located between the crushing-rollers B and B, so as to rest against the inner surface of the drum or cylinder B, is a scraper h, which is employed to remove or loosen any of the crushed material wh ich might-adhere to the said cylinder. Located beneath the rollers F in an inclined position is a chute G, which is used for conveying the material from said rollers, so as to deposit it on the platform 0, over which the conveyer travels.

It is apparent that the working gear fordriving the several parts-of the machine may be dif'ferentl arranged or constructed; but the hereinisclosed arrangement is a convenient one for operating the entire machine from one driving-shaft; but we do not desire to be limited to the specific form and arrangement of the gearing mechanism, as we may times locate another auxiliary crushing roller or cylinder to the rear of the larger one and. pivotally connect .it to the shaft B by means of arms I) in a like manner as the roller or cylinder 13 is connected, which is clearly shown in Fig. 8 of the drawings. We have shown the large crushing roller or c linder as being made of two sections B and which may be done for the convenience of handling said roller when placing it in position; but it may be made of one piece or more, as is apparent. I

In order to attain the best results in pulverizing the coal or other material, it should be as dry as possible when it reaches the pulverizing-cylinders within the drum or hollow cylinder, and for this-reason the steam-pipes i I between which the product must'pass are of great importance. I

From the foregoing and by reference to the drawings it will be clearly seen and readily understood that by lacing lum -coal, ore, or

caused to pass between the corrugated rollers E, which will crush it to a certain degree of fineness, from whence'it will pass through the chute F between the rollers F, by means of which it will be further crushed or comminuted, and from these rollers the product will pass down the inclined chute G to the platform 0, onwhioh it will be carried, by means of a conveyer G, into the rotatable drum of hollow cylinder. As the slats c of the conveyer pass along the platform 0 it is a parent that he crushed product will drop t ough the diagonal slot a so as to feed the material to the steam-pipes d and sieve D gradually. The steam-pipes (1 being arranged in rows inclined toward the raised end of the sieve will have a tendency to cause the product to move in said direction; but to carry all of the product ,toward the higher end of the-sieve, so that the crushed material must pr as over its entire surface, we locate under the steamipes in an inclined position the chute d in the agitation of the sieve, which is provided with very fine meshes, the finer particles of coal or other material are sifted therethrough and will fall onthe platform 0 from which it will be carried out through one of the openings 0 in the head-plates to a suitable receptacle, into which it will be deposited. The coarser par- .ticles will pass from the lower end of the it will be sieve infront of the auxiliary crushing-roller B when the same is used and will be further pulverized by the action and weight of said roller. As the drum B rotates, the material over which the'roller B has just assed will be loosened from the surface of t e drum or cylinder B by means of the scra er h, and the main crushing-roller B will furt er crush and pulverize the material, after which it will be loosened from the surface of the drum by means of the scraper 6 and will be thrown upward and on the steamipes by means of the brush, as is shown by otted lines in Fig 1 of the drawings,to again pass between said pipes and onto the screen, when the abovedescribed operation will be re eated. As the scraper b is slightly curved 1n cross-section, it is apparent that the material thrown upwardly by the brush will be deflected thereby toward the steam-pipes. The rollers B and B being of immense weight and rotating on the inner surface of the drum will grind or pulverize the material to dust or powder, and as it is loosened from the surface ofthe drum by the scraper 6 and rapidly revolving brush it is apparent that itwill be held the head-plates and so as to be rotated by suitable gearing, yet we may 1place said roller,

as well as others, in the ollow cylinder without journaling them (see Fig. 6) and allow them to be rotated by the revolution of the said cylinder. We may also pivotally secure the arms I)? of the auxiliary roller or rollers to the 'head plates, as is clearly shown in Fig. 7 of the drawings.

Having thus fully described our invention, what we claim as new, and desire to secure by Letters Patent, is

1. In a ulverizer, the combination with a rotatable hollow cylinder, of a fixed head at each of its ends having openings for the ad- 'mission and discharge of the material to be pulverized; a crushing-roller located within the hollow cylinder, means'to rotate said cylinder and roller, an endless conve er to convey the material into and out o the cylin-.

der,.said conveyer adapted to pass through the openings in the fixed heads, and means to operate the conveyer longitudinally of the.

cylinder whereby the finer particles of the material after being crushed may be carried out and the coarser particles again subjected to the crushing-roller, substantially as described.

2. In a ulverizer, the combination with a rotatable hollow cylinder, of a fixed head at each of its ends having openings forv the admission and discharge of the coal or other material, a main crushing-roller and an auxiliary crushing-roller bothlocated so as to contact with the inner periphery of the cylinder, a scraper located within and against the surface of the cylinder, means to rotatethe cylinder, an endless conveyer adapted to pass each of its ends having openings'for the admission and discharge of the coal or other material, a main crushing-roller and an auxiliary crushin -rolle'r both located so ,as to contact with the inner periphery of the cylinder, a brush located within and against the inner surface of the cylinder, means to rotate the cylinder and brush, and a curved defleeting-plate located above said brush, substantially as described. I

' 4. In a pulverizer, the combination with a rotatable hollow cylinder, of a fixed head at each of its ends having 0 enings for the admission and discharge o the coalor other material, a main crushing-roller and an auxiliary crushing-roller, both journaled so as to contact with the inner periphery of the cylinder, means to rotate the cylinder and an endless slatted conveyer to convey the material into and out of the cylinder, and means to operate the conveyer, a mechanism to separate the coarser particles of the material from the finer and means to subject the coarser particles again to the crushing-rollers, substantially as described.

5. In a pulverizer, the combination with a rotatable hollow cylinder,'of a fixed headat each of its ends havingopenings for the ad-- mission and discharge of the coal or other material, a conveyer passin through said openings, a platform under t e upper openings and a platform under the lower 0 enings, a main crushing-roller and an auxi iary crushing-roller, both journaled so as to con-.

tact with the inner periphery of the cylinder, and meansto rotate the cylinder and main crushing-roller, and to operate the conveyer t'o conveythe material into and out of the cylinder, substantially as described.

6.- In a pulverizer, the combination with a rotatable hollow cylinder, of a fixcd'head at each of its ends having openings for the admission and discharge of thecoal or other material ,a downwardly-inclined chute located below the inlet-openings, a main crushingroller journaled so as to contact with the inner eriphery of the cylinder, an auxiliary crus ing-roller pivotally connected to the shaft of the main roller and journaled so as to contact with the inner periphery of the cylinder, a brush located within and against the inner surface of the cylinder, and means to rotate the cylinder and brush whereby the material is projected. back up to said chute, substantially as described.-

7 In a ulverizer, the combination with a rotatable ollow cylinder, of a fixed head ateachof its ends having openings for the admission and dischar e of the coal or other material, a downwardly-inclined chute located below the inlet-openings, steam-' pipes located in rows above said chute, a main crushing-roller journaled so as to contact with the inner periphery of the cylinder, an auxiliary crushing-roller pivotally connected to the shaft of the main roller and journaled so as to contact with the inner periphery of the cylinder, a brush and scraper located. within and against the inner surface of the cylinder, and means to rotate the cylinder, main crushing-roller and brush, whereby the material is projected back up to the said steampipes and chute, substantially as described.

I material, a main crushing-roller journaled so as to contact with the inner periphery of I the cylinder, an auxiliary crushing-roller pivotally connected to the shaft of the main roller and ournaled so as to contact with the inner periphery of the cylinder, and means to rotate the cylinder and main crushingroller and an endless conveyer to convey the material into and out of the cylinder, substantially as described. I

9. In a pulverizer, the cornbinationwith a rotatable hollow cylinder, of fixed heads at its ends each having an upper and lower opening, a latform located within the cylinder and be ow the upper openings and extending outside of one of the heads, a platform located within the cylinder, below the lower openings and extending outside of one of the heads, a conveyer traveling through said openings and on the upper surface of said platforms, means within the cylinder to pulverize the coal or other materiahthe steam-pipeslocated beneath the upper platform and within the cylinder, an inclined sieve located within the cylinder below the steam-pipes,

inclined position beneath the steamipes,

and means to rotate the cylinder and rush and to agitate the sieve and to convey the material into and out of the cylinder, substantially as described.

ICC

11. In a pulverizer, the combination with a rotatable hollow cylinder, of a fixed head at each of its ends havingoipenings for the admission and' discharge 0 material, a main crushing-roller journaled so as to contact with the inner periphery of the cylinder, a rotatable brush journaled so as to contact with the inner surface of the cylinder, a platform located under each of the openings in the cylinder, a conveyer traveling through said openings and on the latforms, steam-pipes located within the ey der beneath the'uipper platform, and an inclined sieve locate steam-pipes, substantially as described.

12. In a pulverizer, the combination with a rotatable hollow cylinder, of a fixed head at each of its ends having 0 enings for the admission and discharge 0 the coal or other material, a main crushing-roller and an auxil- .iary crushing-roller botlijournaled so as to contact with the inner periphery of the cylinder, a platformlocated beneath the upper openings in the cylinder and having a d1ago-. nal slot, a platform located below the lower" openings in theicylinder, steam-pipes located within the cylinder beneath the upper platform, a sieve'suspended in an inclined position above the lowerplatform and beneath the steam-pipes, a rotatable brush located within the cylinder and journaled so as to contact with the inner periphery thereof, a scraper located near the brush and against the surface of the cylinder, an exhaust-pipe the coal or other' within theciylinder beneath the opening into the cylinder, and a conveyer 5 traveling through said openings and over said platforms, substantially as described.

13. In a pulverizer, the combmation with a rotatable hollow cylinder, of a fixed head at each of its endjs having openings for the ad- 0 mission and discharge of the material to be pulverized, a crushing-roller located within the cylinder, a brush and scraper located within and against the inner surface of the cylinder, and means to rotate the cylinder 5 and brush, whereby the material is projected upwardly and deflected by the scraper over the crushing-roller, substantially as described. p 7

14. In a pulveriz'er, the combination with a 50 rotatable hollow cylinder, of a fixed. head at each of its ends having openings for theadmission and discharge of thematerial to be pulverized, a crushing-roller located within the hollow cylinder, a brush located within 5

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