US514780A

US514780A - George seiler and franklin emig

Info

Publication number: US514780A
Authority: US
Publication date: 1894-02-13
Anticipated expiration: 1911-02-13

Description

G..sB-1LER&P. BMIG., A MACHINE POR SEPARATING PULP PROM LIQUIDS.

G6936 Se,

` (No Model.)

d NTTED STATES PATENT Orricr.

GEORGE SEILER AND FRANKLIN EMIG, OF SPRING FORGE, PENNSYLVANIA, ASSIGNORS OF ONE-THIRD TO GEORGE G. WAGNER, OF SAME PLACE.

MACHINE FOR SEPARTING PULP FROM LIQUIDS.

SPECIFICATION forming part of Letters Patent No. 514,780, dated February 13, 1894.

Application iled April 10,1893. Serial No.46 9,764. (No model.)

To all whom, t may con/cern:

Be it known that we, GEORGE SEILER and FRANKLIN EMIG, citizens of the United States, residing at Spring Forge,in the county of York and State of Pennsylvania, have invented certain new and useful Improvements in M achines for Separating Pulp from Liquids; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as Will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to a machine for recovering wood pulp from caustic liquors with- :out the use of an undue or large quantity of water for washing the pulp, and the machine may also be advantageously used for the recovery of bark from the coloring matter or liquid used in bark mills.

The objects of our invention are to provide simple and efficient means whereby the caustic liquoris extracted or pressed from the wood pulp and the liquor allowed to run off into one tank or compartment while the pulp is discharged from the pressure mechanism into 4another compartment, such operations and separation being elfected mechanically and expeditiously with the use of a very small proportion of water, or byomitting the supply of Water altogether, thus effecting a saving not only in the quantity of the pulp recovered from the caustic liquor but also accomplish the end in a much shorter space of time and at a greatly reduced cost.

Vlith these ends in view, our invention consists inthe combination witha suitable frame, a supply hopper therein, a set of co-acting pressure rolls supported in the frame below the supply hopper, a traveling carrier arranged to travel between the upper and lower rolls of said coacting pressure rolls, a tank for receiving the liquid situated beneath one part of the carrier, and a water supply tank at or near the discharge end of the traveling carrier for the purpose ofsupplying water to the compressed pulp after it has passed between the pressure rollsand the liquor eX- tracted therefrom, all as will be hereinafter more fully described.

The invention furtherconsists in the novel combinations of devices and peculiar construction Yand arrangement of parts as will be hereinafter more fully described and particularly pointed out in the claims.

IVe have illustrated the preferred embodiment of our invention in the accompanying drawings, forming a part of this specication, and in which-n Figure l is a side elevation,and Fig. 2 is a longitudinal central sectional view of our machine. Fig. 3 is an enlarged side view of the upper part of the frame showing the removable bearing rails in which the supply hopper, the upper rolls of the coacting pressure rolls, and water tank and scraper knife are supported, to permit ready and convenient access to any part of the machine.

Like lett-ers of reference denote corresponding parts in all the iigures of the drawings, referring to which- A designates the main or supporting frame of the machine, which frame may be of any suitable or preferred construction adapted for the purpose of sustaining all the operative parts or mechanisms for compressing and extracting pulp or bark from theliquors present therein. Atthe top side of this frame A, and preferably near one end thereof, we provide a supply hopper B into which the pulp or bark is deposited by any suitable conveyer or in any other manner. We preferably support this hopper on the frame in a manner to permit of the ready removal of the hopper, as will presently appear.

C is a traveling conveyer or apron which is arranged within the sides and ends of the frame A, said apron or conveyer being situated in a horizontal position on a plane beneath the hopper B so as to receive the pulp or bark from said hopper. We preferably make this traveling apron or conveyer of wire or reticulated, foraminous material, although any other material suitable for the purpose of permitting the liquor or liquid matter to pass through the conveyer or apron after it has been extracted or pressed from the pulp or bark, may be used. g

D,.D, are the set of coacting pressure rollers, D being the upper roller or rollers, and D being the lower roller or rollers, of the set of coacting pressure rollers. This set of coroo nemploy a series of four rollers, two being arranged above and the other two below the apron. This conveyer or apron C is arranged to travel or pass between the upper and lower rollers of the set of coacting pressure rollers, 'whereby the apron is niade to convey the pulp or bark from the hopper between the upper and lower rollers and thus the pulp or bark is subjected to pressure between the uppei and lower rollers to force out the liquid present or contained in the pulp.

The set of pressure rollers are situated at one side of the supply hopper, and at the other side of said pressure rollers from the supply hopper is arranged a tank E, which is provided, on the side adjacent to the pressure rollers, or in its bottom, with a discharge opening e. This tank E is to be supplied with water, in order to be discharged into the pulp oi bark after it has been pressed by the rollers, so that the pulp or bark will contain sufficient water, or be in a semi-Huid state, for the purpose of conveniently pumping the pulp or bark back to the mill by any suitable forni of pumping mechanism (not shown).

In the lower part of the frame, below the traveling conveyer or apron, and in vertical line with the supply hopper is a tank F in which the caustic liquid or other liquid matter extracted from the wood pulp orbark, is adapted to flow when it is pressed or extracted from the pulp or bark, and this receiving tank F has a vertical wallfat its inner end, which Wall serves to isolate the receiving tank F from the discharge chute G which is inclined downward from the wallf of said receiving tank and arranged below the discharge end of the conveyer or apron C to receive the pulp or bark from the latter after it has been pressed by and between the coacting pressure rolls.

The conveyer or apron C is of the endless variety, and it is supported at its ends by the power-driven and idler rollers H, Il', around which the endless conveyer or apron passes, and the shafts of these rollers Il, H are suitably journaled in bearings supported on the sides of the frame A, as shown, the shaft of the power-driven roller H being provided with a pulley 7L around which passes a belt for communicating power to the roller Il and thus to the apron.

On the sides of the frame A aie fitted the removable bearing rails I, I, of the machine, which bearing i'ails aie notched or provided with caps which titover the shafts of the driv ing and idler rollers H, H', and the shafts or trunnions of the lower rolls D', D' of the set of coacting pressure rollers. The bearing rails are fitted between the end pieces of the frame A, to which they are connected by slides or ways to prevent lateral or sidewise displacement of said bearing rails, and they are prevented from vertical movement and held down in position by any suitable fastenings. These bearing rails are further provided with the boxes or journal bearings for the shafts or truniiions of the upper rolls D, D, of the set of coacting pressure rolls, over which shafts or trunnioiis are fitted the caps t, t, that hold the rolls D, D, in place and which permit of the ready removal ofthe rails from their bearings in the rails l, I.

The supply hopperB of the inacliiiieis fitted in place between the inclined ways ,7,j,.shown by full lines in Fig. 2 and by dotted lines in Fig. l, said waysjbeing on the inner sides'of the rails I, I, so that the hopper can be readily lifted out of position between the rails I, I. Said hopper is further provided, in its bottom, or on the side adjacent to the roll D, with an outlet opening b, the area or size of which can be regulated by means of the gatevalve K whi'cli is fitted to slide between the ways or strips 7a, 7c, attached to one side of the h opper.

The supply tank, for the water, E, is held in place by means of the lugs or flanges Z, Z, provided at the ends thereof, which lugs are fitted in place in the openings formed in the retainers L, L, fixed to the upper side of the bearing rails I, I` suitable keys or wedges Z l', being inserted between the retainers L and the lugs Z on the supply tank to hold the latter firmly, but detachably, in position.

In order to keep the upper roll D ofthe set of pressure rollers clear, and prevent wood pulp or bark from adhering to the surface of said roll, we provide the supply-tank E with a scraper or knife M which protects from the lower part of the hopper until it terminates very close to the surface of the roll D.

The rolls D, D, D', D', constituting the set of pressure rolls ai'e geared together s'o that they all rotate or turn in one direction, to effect the compression of the pulp or bark, and thus extracttheliquid matter therefrom; but in the drawings we have not deemed it necessary to illustrate fully this gearing as the same will be readily understood and supplied by a mechanic skilled in the art.

This being the construction of oui` machine, the operation thereof may be described as follows: Power is communicated by a belt to the driving pulley of the shaft-roller II to move the endless conveyer or apron, and the pressure rolls are also set in motion in any convenient Way. The pulp and its caustic liquor, or the bark and coloring matter, are supplied to the hopperB in any appropriate way while water is supplied to the tank E. To feed the pulp or bark and their contained liquid matter to the machine, the gate-valve of the supply hopper B is opened, and the pulp or bark with their liquid is allowed to pass through the opening b, in regulated quantities, and thusdeposited upon the foraminous or other form of conveyer or apron C. This conveyer transfers to the pressure rolls the pulp or bark, and as the matter is carried through the machine by the apron or conveyer, the

IIO

liquid matter in the pulp or bark is extracted y or pressed therefrom. The liquid flows readily through or from the apron into the tank at the bottom of themaohine, while the solid particles of. wood pulp or bark are carried over the discharge end of the apron and deposited on the inclined discharge-chute, so that the pulp or bark and liquid are mechanically separated and discharged separately from the machine.` Y

We have found that-it will not be necessary to use any, or at most very little, water to effect the separation of the liquid matter from the solid matter Aof the wood pulp or y bark; but to enable the pulp or bark to be lproportion of parts and details of construction of the mechanism herein shown and described as an embodiment of our invention can b e made without departing from the spirit or sacrificing the advantages thereof, and we therefore reserve the right to make such modifications or alterations as fairly fall within the scope of the invention.

In order to provide a proper support for the apron or conveyer, and to prevent the same from sagging, we may provide a series of two .or more small sustaining rollers N which are placed at one side of the set of coacting pressure rolls and are loosely jour` naled in bearings on the sides of the frame A of the machine. y

Having thus fully described our invention,

what we claim as new, and desire to secure by Letters Patent, is

1. In a machine for the purposes described, the combination with av suitable frame, and a supply hopper, of a set of coacting pressure rolls, a conveyer arranged to travel between said pressure rolls and carry the ksolid matter from vthe hopper to and through said pressure rolls, a liquidreceiving tank below one part ofthe'conveyer, and a water-supply tank ar.- ranged over the delivery part of the conveyer, at one side vof the pressure-rolls, to supply water to the solid matter after it hasl passedV between the `rolls and the liquor expelled therefrom, substantially as and for the purposes described.

2. In a machine for the purposes described,

' the combination with a suitable frame, of a supply hopper, a set of coacting pressure rolls, a conveyer arranged below said hopper and between said rolls, and alliquid supply tank arranged relatively'to said apron and the pressure-rolls to su pplypa limited quantity ofwater to the pulpor bark after its compression between said pressure-rolls, substantially as and for the purpose described.

3. In a machine for the purposes described, the combination with a suitable frame, and a supply hopper, of a set of coacting pressurerolls, a conveyer arranged-to travel between said pressure-rolls, the receiving tank below one part of the apron, a discharge vchute below the other end of the apron, a liquid supply-tank arranged to deliver liquid to the pulp or bark after its compression between said pressure-rolls, and a scraper or knife supported in position to clearthe upper pressureroll from pulp or bark that adheres thereto,` substantially as and for the purpose described.

4. In a machine for the purposes described, the combination of an endless apron sup.- ported by the driving and idler rollers, the set of coacting pressure-rolls constructed for, positive rotation in one direction and ar, ranged to bear against the lower and upper sides yof said apron, the supply hopper Vsituated above the apron at one side of the press urerolls, a supply tank likewise situated above theapron and'on the opposite side'fro'm the pressure-rolls, and the receiving and discharge means for the pulp or bark and liquid below the apron, substantially as and for the purposes described; t

5. In a machine for.the purposes described, the combination of a frame provided with the removable bearing rails, the endless apron having its driving and idler rollers journaled in the sides of the frame, the s et of coacting pressure rolls having the lower rolls journaled in the sides of the. frame and its upper rolls journaledin the removable side rails, a supply hopper carried by said removable side rails, a supply tank also carried bysaidl bearing rails, and the receiving tank and discharge chute fixed to the sides of the frame below IOO the apron, substantially as and for `the purpose described. t 6. In a machine for the purposes described, the combination of a main frame provided with the removable bearing rails`, a n endlessv apron having its driving and ,idler rollersr journaled in the sides of thesmain frame, the coacting pressure rolls having its upperrolls journaled in the bearing rails and its lower rolls journaled in the sides of the frame, aL supply hopper removably supported between said bearing-rails, a supply tank detachably fastened to the bearing rails, and the receiving tank and chute fixed to the'frame below the apronl and atopposite ends thereof, sub-` stantially as and for the purpose described.

In testimony whereof we affix our signatures in presence of two witnesses,

GEORGE SEILER.

FRANKLIN EMIG.

Witnesses:

,WILLIAM BAHN, JOHN S. MYERS.