US1118846A - Pulverizer. - Google Patents

Description

G. A. DREISBACH.

PULVEIHZER.

APPLICATION FILED JUL-Y 11,1013.

Patented Nov. 24.. 1914.

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O. A. DREISBACH. P'ULVERIZBR.

APPLICATION FILED JULY 11, 1918.

1 1 1 8,846, Patented NOV. 24, 1914.

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Mm Mm CHARLES A. DREISBACHQ NEl V HAVEN,CONNEC'J ICT JT.

IPULVERIZER.

Specification of Letters Patent.

Patented Nov. 24, 1914.

Application filed July 11, 1913. Serial No. "778,506.

To all whom it may concern:

Be it known that I, CHARLES A. Dams BACH, a citizen of the United States of America, and residing at New Haven, in the county of New Haven and State of Con necticut, have invented a certain new and useful Improvement in Pulverizers, of which.

the following is a specification.

My invention relates to pulverizing apparatus and particularly to an apparatus adapted to crush slag cinder-s for the purpose of recovering therefrom their metal components.

In the accompanying drawings, Figure 1 is a broken front eleyation of an apparatus in which my apparatus is embodied in one form; F ig. is a broken section on line 2-2, Fig. 1 ;Fig. 3 is a section on line 3-3, Fig. 1; Fig. & is an elevation ofa f In operating blast furnaces prior to castingit is common practice to pour off theslag from the melt onto the floor of the casting chamber. is impossible to remove the slag in this manner with such nicety that some metal is not carried withit it has consequently become common practice to gather the slag, grind itand separate themetal from the slag for reuse. The customary apparatus employed for this purpose is a rolling barrel containing a crushing ball or cylinder which rolls freely in the barrel and pulverizes the slag cinder which is dumped in the bottom of the barrel. This action, While sufliciently effective, is very hard 011 tion that it deflects the material fromthe placement. In the present construction the crushing 9f the slag is accomplished rolls held out of contact with the barrel and to which the slag is fed by the rotation of the latter. i

In the form here shown the present a paratuscomprises a pair oi uprights 10, each carrying a circular head plate 11 forming a stationary barrel end. The barrel 12 is pro-f vide d with external annulai' flanges which rest on rollers14 freelyiournaled in adjust able bearings 15 mounted on the frame 10. J ou'rnaledin the stationary heads 11, I pro: vide aliye shaft l fSTcarryin the central crushing 011 17 whichfis iie ea thereto. M n e Oil O t sud f th a ter is a l ge driving gear wheel 18 which neshes "with the pinion 19 keyed to the 29 of the fast and loose pulleys 21. pinion 22 onthe shaft 16 meshes with an *idler' 23 the idler 24 to the internal gear 25 on the roll bearing flange 13, at one end of the barrel. It is thus seen that the crushing roll 17 and the barrel 12 are both positively driven from the shaft 16. Cooperating with the crushing roll 17 I provide two additional crushing rolls 26 and 27 which bear by gravity against the roll 17 and are guided in the slot bearings 28 and 29 respectively on the stationaryheadsof the barrel.

An opening 30 at one end of the barrel permits the slag cinderto be fed into the interior thereof. Iprefer to provide a feed chute31, pivoted at 32 to the stationary head 11 and i'etained in thepositionin Fig. 1

during the feed of slag to the barrel, bythe latch 33 on the spindle 3 1 of the pivoted apron 35. the cinder shoveled into chute 31, it fallsjtothe bottom of the barrel and. is carried iip the pallets 3d which discharge gravity upon the apron 35, the latter being so arranged as t guide the material betivjeenthe crushing rolls 17 and 2d where it receives its first reduction in diameter 'and thcnpasses between the rolls 17 and 27where it receives its second reduc: tion in diameter and falls to the bottom of thebarrel. The periphery of the barrel is perforated as at 37 to permitthe small par. t k /9f r 'l l s 9 WSS t eug in the water -trough'38 into which the lower portion of the drum dips. Astrcam of water from a pipe BQconstantly circulates through the'trough 38 and carries off at the overflow 4 h liehtva tl th t nde ass w ich have passed through the screen-like cles of the inass, which contain the metal,

to the hottoin or the trough and may aked i bthiyise su tab y wri hdra l tme t i els; When a given quantity 9f cinder has been sufliciently ground and is desired to empty he um f Whateve r ain ther t apr 'n 3h swung over means of the handle 41 to the position indicated in dotted ines Fig 3-. I thi Pos ti n s c material s s b e ieh u b th pe 36 is de fiected not to the ro llers 1? and 26, but to the tetie hute 4-2 Wit in the barrel an e! w ic he am n 5 normal e The bt m ti' chute is e i ed wnward a ciiute 3 1; ontherele aseof the catch shines down by a ena t he eb tian team stea teas re a hi giiids themateriahto the swinging position it forms a continuation of the stationary chute 42 and such material as is still in the barrel is discharged through the chute 42 and feed chute 31.

The operation of the apparatus is easily understood. Upon the shifting of the'driying belt to the live pulley 21, pinion 19 is rotated, thereby driving the gear 18 and its shaf 16. This sets in motion not only the crushing roll 17 which is keyed to the shaft, but also the train of gears 22, 23-, 24 through which the drum is driven. The rolls 26, 27 are rotated by reason of their frictional contact with the roll 17. As the cinder is fed into the drum through the hopper 31 (now in the position shown in Fig. 1) it is carried up by the pallets 36' and dropped upon the apron which discharges to the crushing rolls. Such material as a single passage through the rolls is not sufiicient to reduce to a diameter small enough to pass out through the reticulated periphery of the drum, is carried up, by the pallets and again discharged to the crushing roll. The fines entering the trough 88 either sink by gravity to the bottom or are carried out by the overflow at 39. Inasmuch as all the material falls into the water in which the lower portion of the drum dips, the grinding is done wet and the usual dust of the crusher is avoided. To discharge the drum of metal which has been thoroughly cleaned from slag and clinkers, the handle 41 is turned down to throw the apron into such position that it deflects the material from the pallets to the discharge chute 42, the hopper 31 being new in position to form a continuation thereof discharging outside the barrel. The apparatus may also be used for dry grinding. if preferred. and for such use I may provide a hole 43 in one of the heads to receive a dust flue leading to a suitable exhauster not shown), by means of which the dust is drawn off as fast as made by the rolls. Again, the rolls 2627 may be spring-pressedagainst the live roll 17 instead of bearing against the same solely by gra ity.- Various other modifications will readil suggest themselves and the construction shown'is'to be regarded merely as an exemplary embodiment of my invention.

I claim as my invention 1. A crushing apparatus of the type desc ibed. compr sing a rotary barrel, a pluralitv of crushing rolls in frictional contact with each other arranged within the barrel, a live shaft keyed to one of said rolls the other rol s being idlers. gearing for driving said shaft and gearing between said shaft and barrel for rotating the latter, in combination with means ca ried on the inner face of the barrel fo lifting material f om the lower po tion of t e ba el and feeding the same to the crushing rolls;

2. A crushing apparatus of the type described, comprising a rotary barrel, a live crushing roll centrally supported Within the latter, a pair of idler crushing rolls free to rise above the same and bearing by gravity in frictional contact with said live roll, and means carried on the inner periphery of the barrel for feeding material from the bottom of the drum to the crushing rolls.

3. A crushing apparatus of the type described, comprising a rotary barrel, crushing rolls arranged in the upper portion of the barrel and out of contact with the latter, one end of the barrel being apertured to admit material to the lower portion thereof, means on the inner face of the barrel for lifting said material to the upper portion of the barrel and discharging it to said crushing rolls, a pivoted apron for directing said material to the crushing rolls, a stationary discharge chute normally covered by said apron, and means for swinging said apron to direct to said dis charge chute the material "lifted by the barrel. j

4. A crushing apparatus of the type described, comprising a rotary barrel, crushing rolls arranged in the upper portion of the barrel out of contact with the latter, one end of the barrel being apertured to admit material to the lower portion thereof, means on the inner face of the barrel for lifting said material to the upper portion of the barrel and discharging it to the crushing rolls, a pivotedapron for directing said material to the crushing rolls, a stationary discharge chute normally covered by said apron, and means for swinging said apron to direct to said discharge chute the material lifted by the barrel, together with a pivoted feed chute directing the material through the aperture in the end of the barrel during the feed to the latter and adapted to be swung into the barrel to coiiperate with the stationary discharge chute therein to lead material from the barrel, substantially as described.

5. In crushing apparatus of the type described, a rotary barrel apertured at one end to admit material to the interior thereof, a pivoted feed chute for, feeding material through said aperture, means on the inner i rial, crushing rolls within the barrel, a pivoted apron for guiding said lifted material to the rolls, a stationary discharge chute within the barrel and means for swinging said apron periphery of the barrel for lifting the mateand feed chute on their pivots to respecscribed, comprising arotary barrel, a crushing roll axially arranged therein, means for poslti ely rotatlng sald roll, an idler crushing roll resting upon said driven roll and free to rise therefrom, the axis of said idler roll being arranged to one side of a plane passing vertically through the axis of the driven roll, an apron arranged on the other side of said axis and serving to direct material to the bite of thesaid rolls, means for lifting material from the bottom of the barrel and discharging the same upon said apron together with means to rotate the barrel. 1

7. A crushing apparatus of the type described, comprising a rotary barrel, a crush ing roll axially arranged therein, means for positively rotating said roll, a plurality of idler crushing rolls resting against said driven roll and free to rise therefrom, the axes of said idlers being arranged to one side of a plane passing Vertically through the axis of the driven roll, an apron arranged onthe other side of said axis and serving to direct material to the bite of said rolls, means for lifting material from the.

8.. A crushing apparatus comprising a rotary barrel aperturedto admit a charge to the bottom thereof, crushing rolls arranged within the barrel, means for lifting the charge from the bottom of the barrel, and means Within the barrel for either directing the lifted material to the crushing rolls or discharging it from the barrel.

In testimony whereof I have signed my name to this specification, in the presence of tWo subscribing Witnesses.

CHARLES A. DREISBAOH.

Witnesses JOHN DREISBAGH, MATTHEW C. DALY.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents, Washington, 10.0."

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