US1011255A - Pulp-reducing apparatus. - Google Patents

Description

C. W. SHARTLE.

PULP REDUCING AFPARATUS. APPLICATION FILED JUNE 18, 191

0. RENEWED MAE. 24, 1911.

Patented Dec. 12, 1911.

3 SHEBTSSHEET 1. I

U. W. SHARTL E.

PULP REDUCING APPARATUS. APPLICATION FILED JUNE 18, 1910. RENEWED MAR. 24, 1911.

Lfll 1,55 Patented Dec. 12,1911.

3 SHEETS-SHEET 2.

Inventor 1 A, 5 MM? a Attorney Witnesses: Q i/ O. W. SHARTLE. PULP REDUCING APPARATUS.

8,1910. RENEWED MAR.24,1911.

APPLICATION FILED JUNE 1 L1 L255 Patented Dec. 12, 1911.

3 SHEETS-SHEET 8.

Attorney UNITED STATES PATENT OFFICE.

CHARLES W. SHARTLE, OF MIDDLETOWN, OHIO, ASSIGNOR TO THE S HARTLE BROTHERS MACHINE COMPANY, OF MIDDLETOWN, OHIO.

. PULF-REDUCING APPARATUS.

To all whom it may concern:

Be it known that I, CHARLES W. SHAR- TLE, a citizen of the United States, residing at l\.'liddletown, Butler county, Ohio, have lnvented certain new and useful Improvements in Pulp-Reducing Apparatus, of which the following is a specification.

This invention pertains to improvements in pulp-reducing apparatus, of beating-engine type but of the class designed to work on the continuous as distinguished from the intermittent system; by continuous system being meant a system in which material is continuously supplied and pulp continuously withdrawn as fast as finished, and by intermittent system is meant a system in which a quantity of material is subjected to action in a receptacle to be emptied and again filled when the first filling has been properly reduced.

The object of my present invention is to improve generally upon the working of other continuous systems andalso to provide for a more perfect separation of metallic and other hard matters from the original material, and also to provide for the handling of material containing strings and thelike unfitting the material for ready handling by ordinary conveying mechanism.

My invention will be readily understood from'the following description taken in connection with the accompanying drawings in which Figure 1 is a plan of pulp-reducing apparatus exemplifying my invention: Fig. 2,

a vertical transverse section thereof, partly in the plane of line a and partly in the plane of line b of Fig. 1: Fig. 3 a vertical longitudinal section of a portion of one of the screen-plates, in the plane of line a of Figs. 1 and 2, and showing one of the dragblades: Fig. 4 a side elevation of one of the transfer dippers: Fig. 5 a vertical longitudinal section of the soaker in the plane of line (i of Fig. 6: and Fig. 6 anend eleva tion of the soaker, part appearing in vertical transverse section inthe plane of line e of Fig. 5. v p

The apparatus, inits most complete form, is designed to receive the raw ,stock, old paper for instance: soak it to softness; remove from it metallic and other hard particles; break up the stock by what might in some cases be called a preliminary'beating;

deliver the broken stock to a beating engine;

Specification of Letters Patent; Application filed June 18, 1910, Serial No. 567,547. Renewed March of the basin,

Patented Dec. 12, 191i 1. '24, 1911. Serial No. 616L638.

withdraw beaten stock from the beating engine; deliver the withdrawn stock to a screen capable of passing finished stock and retalning stock not sufliciently fine; return the. withdrawn coarse stock to the beating engine for further beating; extract most of the water from the finished stock; and thus .put the stock in condition for use in a paper-making machine, to the stuff-chest of which the stock will pass directly from the apparatus.

In the drawings, and giving attention first to Figs. 5 and 6 :1, indicates a long trough: 2, the stock-receiving end thereof into which the raw material to be dealt with, old paper for instance, is to be thrown: 3, the discharge end of the trough: 4, a depressed portion of the floor of the trough, providing a retaining basin: 5, transverse strips across the floor of the basin: 6, the tail-wall forming a dam determining the minimum height of the water flowing through the trough: 7, a shower-pipe near the receiving end of the trough to wet the stock as it. is supplied to'the trough: 8, the level of water retained in the trough: 9, an annular screen rotating around the discharge end of the trough which delivers the soaked material into the screen: 10, the discharge mouth of the rotary screen to dis charge from the screen everything fed into it except the water which passes through the screen: 11, a catch-box under the rotary screen: 12, a pump to withdraw water from the catch-box: and 13, a pipe to con vey the water from the pump to the receivingend of the trough.

The material is carried slowly through the trough by the current of water; it becomes showered down by the action of the shower pipe; it becomes soaked in its'slow progress through the trough; it goes to the rotary screen in fairly soaked condition; much of the water passes through the screen and is returned by the pump to the receiving end of the trough; the soaked stock passes from the discharge mouth of the rotary screen minus such water as may have passed through the screen; the main quantity of water is in circulation through the trough, catch-box and pump; the shower-pipe must maintain a supply of water to make up for that discharged from the rotary screen along with'the stock. The current through the basin portion of the screen is comparatively slow and endwise movementof stock through this portion of the trough is further retarded by the cross-strips 5, the result being that much metallic and other hard matter freed from the stock while soaking has a chance to settle in the basin portion of the trough from which it may be occasionally removed. The stock thus more or less thoroughly soaked, and more or less freed from hard matters, is now ready for further action by the apparatus.

Continuing with the drawings, with main attention toFig. ].:14, indicates a preliminary beating engine into which the discharge mouth 10 of the previously described soaker delivers the soaked stock: 15, the beating cylinder of this engine, so to call it, the purpose of this beating engine being, not to cut up the stock but rather to more thoroughly complete the soaking and to break the stock to better fit it for ultimate beating: 16, the water-supply hydrant for the preliminary beater: 17, a shaft projecting over the wall of the tub of the preliminary beating engine: 18, a pulley: 19, mechanism of an obvious character between the pulley and shaft 17 to give the shaft a partial turn first in one direction and then the other: 20, adippe-r carried by shaft 17 and adapted to dip down into the tub'of the preliminary beating engine and withdraw material therefrom and raise it and dump it outside the preliminary beating engine: 21, a counterweight carried by shaft 17 to counterbalance the weight of the dipper and its contents: and 22, a transfer trough into which dipper 20 delivers the material withdrawn by it from the prelim-. inary beating engine. V

The preliminary beating engine 14 is, as before stated, hardly a beating engine, its duty being to circulate the stock in the water and open it up and insure a thorough softening and to permit the separation from it, by gravity, of metallic and other hard matters which may have been retained by the stock while passing through the soaker. The purpose of the beating cylinder of this preliminary beating engine being merely to circulate and break the stock, its blades need not be knives or operate in conjunction with bed-knives, nor need its blades be anything more than mere paddles running so far from anything below them that they cannot be injured by large hard bodies found in the stock, bodies which might ruin the closely set eo-acting cylinder and bedknives of :a proper beating engine. The broken thoroughly soaked stock withdrawn from the preliminary beating engine, and having separated from it most of the hard bodies likely to do damage, is discharged from trough 22 for further action in the apparatus. The stock to be withdrawn from the preliminary beating engine and transferred elsewhere for further treatment may contain strings or the like which cannot be handled satisfactorily by any kind of an endless conveyor, owing toentanglcment of the strings to the mechanism. The dipper employed in getting the material out of the beater-tub and elevating it and dumping it, constitutes a conveyer which, while it does not withdraw any strings from the material which it receives and passes onward,'is unaffected in its action by the presence of strings in the stock.

Continuing with the drawings :-23, in-

dicates a trough into one end of which transfer trough 22 discharges the material,

stock and water withdrawn from the preliminary beating engine by dipper 20: 24, an outlet spout from the discharge end of this trough: 25, a dam at this outlet spout to maintain in the trough a basin of water into which hard particles may settle from the stock passing through the trough: 26, a pulp -screen of generally ordinary diaphragm type, onto one end of whose screenplates spout 24 discharges the material flowing through trough 23: 27, the screen plates of the screen: 28, the diaphragm of the screen: 29, a trough to receive from the the screen-plates: 30, connecting necks between the screen-box and trough 29: 31, an endless carrier disposed horizontally over the screen-plates, and illustrated as chains running on sprocketwheels: 32, dragblades carried by the carrier chains and dragging over the surface of the screenplates to move material to the tail. end of the series of screen-plates, the tail end of the series of screen-plates being open for discharge: 33, stops to limit the swinging motion of the drag bars of the blades so that, while the blades are at liberty to drag along on or near the surface of the-screenplates as they are carried forward by the lower portion of the chains, they cannot drop into disorder as they are carried backward-by the upper portion of thechains: 34, a beating engine of ordinary construction adapted for grinding stockfinely, the tub of this beating engine being so disposed that the tail end of the screen will discharge into it: 35, the beatingcylinder of beating engine 34: 36, the hydrant of this beating engine: and 37, a transfer dipper arranged to dip material from beating engine 34 an deliver it into the head end of trough 23, this dipper and its mechanism being of the screen the pulp which has passed through same character as the dipper described in been treatei only to a breaking action, as distinguished from a cutting and grinding one, nevertheless there is likely to be present in it more or less stuff as fine as it is ever intended to be. From trough 23 the stock goes into the screen-plates and is dragged over them and is discharged into beating engine 34,- any stuff of proper fineness going through the screen-plates. Beating engine 34 grinds up the stock in the usual way, dipper 37 dips it out and delivers it to trough 23; it goes again 'to the screen-plates and is dragged along the screen-plates and discharged again to the beater; stuff of proper fineness goes through the screenplates; the stock -thus moves continuously in a circuit including beating engine 34 and the screen, stock of proper fineness discharging from the screen while coarser stufl' goes back for regrinding. The stuff in its various passages through trough 23 gets a chance to deposit therein metallic and other hard particles. The supply of material to the soaker may be continuous and at such rate as to be t-aken care of by beating engine 34 to which beating engine the soaker and beating engine 14 are mere preliminary adjuncts to-relieve beating engine 34 of the duty Ofsoaking and breaking up the raw stock and to relieve it of the presence of much hard material which might damage itsknives. Aside from this latter matter the preliminary soaking and breaking ex pedites the operation of the system.

Dis-regarding the relief afforded to heating engine 34 by the prelimlnary soaklng and breaking of the stock, the stock may be supplied directly into beating engine 34, along with the proper supply of water, and the stock be treated therein entlrely, the stock being transferred from the engine to the screen from which the tailings go back for further beating, while material of proper fineness passes out from. below the screen-- plates. Again, while the soaker and beating engine 14, so to call it, are preliminary adjuncts to beating engine 34 which may be dispensed with, as above indicated, the soaker is to be viewed as a preliminary adjunct to expedite the work of the appliance into which it delivers, and to abstract from the stock much of the hard material. The raw stock might, of course, be fed directly into beating engine 14, with a proper supply of water, in the absence of a soaker, the

work of soaking them to be imposed .upon beating engine 14. I

The pulp which is discharged from the screen into trough 29 carries with it large quantities of water, in fact all vof the water which has been supplied to the stock, and the bulk of this water is now to be extracted to fit the pulp for the stuff-chest of a paper making machine, and for the purpose of this extraction I use a machine similar to the paper making machine of cylinder type which I will hereafter term the cylinder machine.

Continuing with the drawings :38, indicates the cylinder machine as a whole:139, its cylinder mold: 40, its couch-roll: 41, the doctor for the couch-roll: 42, a receiving vat for the reception of the pulp scraped from the couch-roll by the doctor: 43, an agitator in the receiving vat to keep the pulp in movable form by breaking up the product from the doctor and making the mass homogeneous: 44, an outlet chamber at the end of the receiving vat: 45, a dam between the receiving vat and outlet chamber: 46 an outlet pipe from the outletchamber to convey the pulp away for use as desired: 47, an inlet chamber in front of the vat containing the cylinder-mold: 48, a conduit to convey the screened pulp from trough 29 to inlet 47: 49, a dam between inlet chamber 47 and the vat of the cylinder-mold: 50, a shower-pipe over the cylinder-mold: 51, an outlet cham ber at each end of the cylinder vat: 52, an outlet leading from within the cylindermold to outlet chambers 51: 53, a conduit placing the two chambers 51 in communication with each other: 54, a pump to handle the water coming from within the cylinder mold, this pump being connected with one of chambers 51: and 55, a conduit leading from the pump to the head of transfer trough 22.

Considering the system in its entirety it is to be observed that there are several stages in the progress of the stock in which provision is made for intercepting metallic and other hard matters liable to injure the knives of the beating engine which is to do the work of fine reduction, there being several settling basins in the system to catch such matters. The trough of the soaker can catch such matters if free from the unbroken stock; beating engine 14,- which has no knifeconditions damageable by hard matters, offers another settling basin, and trough 23 otters a third one. If the soaker and breaking engine 14 be absent from the organization then trough 23 will offer the only basin. It might seem that, under such conditions. the settling basin ofiered by trough 23 would be inefficient in giving protection to beater roll 35 for the reason that all material going into trough 23 would be coming. from the tub of beating engine 34 and that therefore hard matters would not be prevented from going to that tub. But it is to be noted that-beating engine 34 may deal with stock for a long time, and with stock which has passed many times through trough 23 and that any hard mattersintercepted by trough 23 are prevented from returning again to the tub, thus lessening to a very material extent the injury to which beating cylinder 35 might otherwise be subjecte proper fineness and to discharge coarse tailings into the beating engine, and a dipper and dipper-operatin mechanism arranged to dip material rom the beating engine and deliver it to the screen, combined substantially as set forth.

2. Pulp-reducing apparatus comprising, a beating engine adapted to reduce pulp to the desired degree of fineness, a screen adapted to have pass through it pulp of proper fineness and to discharge coarse tailings into the heating engine, mechanism for propelling material along the screen, and a dipper and dipper-operating mechanism arranged to dip material from the beating engine and, deliver it to the head of the screen, combined substantially as set forth.

3. Pulp-reducing apparatus comprising, a beating engine adapted to reduce pulp to the desired degree of fineness, a screen adapted to have pass through it pulp of proper fineness and to discharge coarse tailings into the beating engine, an endless carrier arranged over the screen and adapted to have its lower portion moving toward the tail of the screen, drag-blades carried by said carrier and adapted to drag pulp over the screen toward the tail thereof, and transfer mechanism for removing material from the beating engine and conveying it to the head of the screen, combined sub stantially as set forth.

4. Pulp-reducing apparatus comprising, a beating engine adapted to reduce pulp to the desired degree of fineness, a screen adapted to have-pass through it pulp of proper fineness and to discharge coarse tailings into the beating engine, an endless carrier disposed over the screen and adapted to have its lower portion moved toward the tail thereof, trailing drag-bars pivoted to the carrier, drag-blades carried by the drag-bars and adapted .to drag material over the screen toward the tail thereof, stops carried by the carrier to limit the pivotal motion ofthe drag-bars, and transfer mechanism for removing material from i the beating engine and conveying it to the head of the screen, combined substantially as set forth.

-5. Pulp-reducing apparatus comprising, a beating engine adapted to reduce pulp to the desired degree. of fineness, a screen adapted to have pass through it pulp of proper fineness and to discharge coarse tailings into the beating engine, a transfer device adapted to remove material from the beating engine. and deliver it to the screen, .and a settling basin between the heavy matters being transferred from the beating engine to the screen, combined substantially as set forth. Y

6. Pulp-reducing apparatus comprising, a beating engine adapted to reduce pulp to the desired degree of fineness, a screen proper fineness and to discharge coarse tailings into the beating engine, a dipper and dipper-operating mechanism arranged to dip material from the beating engine "and deliver it to the screen, and a settling basin in a conduit between the dipper and the screen, combined substantially as set forth.

7. Pulp-reducing apparatus comprising, a beating engine adapted to reduce pulp to the desired degree of fineness, a screen adapted to have pass through it pulp of proper fineness and to discharge coarse tailings into the beating engine, a preliminary beating engine adapted to break and soak stock which is to be finely beaten in the first-mentioned beating engine, transfer mechanism adapted to remove stock from the preliminary beating engine and deliver it to the screen, and transfer mechanism adapted to remove stock from the first-mentioned beating engine and deliver it to the screen, combined substantially as set forth.

8. Pulp-reducing apparatus comprising, a beating engine, a screen, a soaking device adapted to receive raw stock and water and move them forward, conveying apparatus adapted to receive stock from the soaker and deliver it to the beating engine, and a screen arranged to receive stock from the soaker and draw water from said stock, combined substantially as set forth.

adapted to continuously receive water and 'raw stock at one end and discharging them at the other end, a rotary screen surrounding the tail end of the soaker trough, and

ing engine to advance the stock to the beating engine, combined substantially as set forth.

ing, a beating engine, a screen, a soaker trough adapted to continuously receive water and raw stock at one end and discharging them at the other end, a'rotary screen surrounding the tail end of the soaker trough, mechanism intermediate the screen and beating engine to advance the stock to heavy matters, combined substantially as set forth.

' 11. A pulp-reducing apparatus comprising, a beating engine, a screen, a soaker beating engine and the screen to intercept.

the beating engine, and a settling basin in said trough to permit the interception of adapted to have pass through it pulp of i may 9. A pulp-reducing apparatus comprising, a beating engine, a screen, a soaker trough mechanism intermediate the screen and beat- 10. A pulp-reducing apparatus compris- I trough adapted to continuously receive water and raw stock at one end and discharging them at the other end, a rotary screen surrounding the tail end of the soaker trough, mechanism intermediate the screen and beating engine to advance the stock to the beating engine, a settling basin in said trough to permit the interception of heavy matters, and intercepting strips disposed transversely across the floor of the settling basin, combined substantially as set forth.

12. Pulp-reducing apparatus comprising,

a beating engine, a. screen, a soaker-trough a the desired degree of fineness, a screen adapted to have-pass through it pulp of proper fineness and to discharge coarse tailings into the beating engine, a dipper and dipper-operating mechanism arranged to dip material from the beating engine and deliver it to the screen, a cylinder vat, a conduit to convey fine pulp from the screen to the cylinder vat, a cylinder mold in the vat,

' a couch-roll cooperating with the cylinderroll, a doctor for the couch-roll, a Water outlet from the interior of the cylinder mold, and a pump and connections arranged to convey water from the cylinder mold to the screen, combined substantially as set forth. 14. Pulp-reducing apparatus comprising, a beating engine adapted to reduce pulp to the desired degree of fineness, a screen adapted to have pass through it pulp of proper fineness and to discharge coarse tailings back into the beating engine, transfer mechanism adapted to remove material from the beating engine and deliver it to the screen, means for supplying the beating engine with water, a cylinder machine, means for transferring to the cylinder machine the pulp and Water which has passed through the screen, and meansTfor transferring to the screen the water which has been extracted from the pulp by the cylinder machine, combined substantially as set forth.

15. Pulp-reducing apparatus comprising, a beating engine adapted to reduce pulp to the desired degree of fineness, a screen adapted to have pass through it pulp of proper fineness and to discharge coarse tailings into the beating engine, a shaft disposed near the beating engine, mechanism for giving the shaft a partial revolution first in one direction and then the other, and

a dipper carried by said shaft and adapted to dip material from the beating engine and elevate it and dump it for'conveyance to the screen, combined substantially as set forth.

CHARLES W. sHAR'rLn.

- \Vitnesses:

GUs'rAv KAFFENBERGER, GEORGE J OHNSON.

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