US1272453A - Refining-engine. - Google Patents

Description

E. A. JONES R. l. MARX.

REFINING ENGINE. APPLICATION r|LED1uNE13.1914.

Patented J ly 16, 1918..

2 SHEETS-SHEET L' E. A. JONES & R. 1. MARX.

R'EHNING ENGINE.

APPLICATION FILED JUNE I3. |814.

fave/Z727@ Patented July 16, 1918..

2 SHEETS-SHEET 2.

EDT/YARD A. JONES, OF PITTSFIELD, MASSACHUSETTS, AND ROBERT EEA, 0F

LONDON, ENGLAND.

REFINING-ENGINE.

Specication of Letters Patent.

Patenten .nay ie, reis.

Application filed June 13, 1914. Serial No. 844,900.

To all whom t may concern Be it known that we, EDWARD A. JONES and ROBERT J. MARX, a citizen of the United States and subject of the King of Eligland, respectively, residing at Pittsfield,

county of Berkshire, State of Massachusetts, and London, E. C., England, respectively, have invented certain new and useful Improvements in Refining-Engines, fully described and represented in the following specification and the accompanying dranvn ings, forming a part of the same.

This invention relates to improvements in refining engines for producing paper pulp, and has been designed particularly for use with refining engines of the Jordan type, though it may be used in other types of refining machines.

' The Jordan type of engine may be briefly described as comprising a stationary coneshaped shell having an endwise adjustable cone-shaped core rotating therein and a driv ing mechanism for rotating the core, the shell and core being provided with coacting cutting elements which while the core rotates comminute or grind up the material which is fed into the shell at the end of minor diameter to produce pulp for the manufacture of paper.

In the manufacture of paper pulp the raw material, such as ground wood or sulfite pulp, is screened and this screened material is further refined in refining engines of the Jordan type briey described above to finally reduce the pulp to condition for use in the manufacture of paper. By the screening operation certain coarse material, as improperly ground or digested lumps or pieces of woo are separated out from the stock which is not in suitable condition to go to the Jordan, and this material so separated yout is rejected. These rejections have heretofore been thrown away as waste, as

they could not be properly reduced in the paper.

It is also an object of the invention to provide an improved engine of the type referred to which may be employed with regular stock to produce a superior product and more efficiently than engines heretofore constructed. With these and other objects in view, the invention generally'y consists in the employment 1n a Jordan engine of a plug having grinding bars composed of basalt lava or similar stone, an'd a shell having coperating grinding bars composed of similar material, these bars being arranged in the plug and in the shell in a novel manner so as to proylde an improved grinding or disintegrating effect.

Constructions embodying the invention also include novel methods of securing the grinding bars in the shell and plug.

For a complete understanding of the invention, reference may be had to the accompanying drawings which show the preferred embodiment of the invention as used with a refining engine of the Jordan type, and a detailed description of these drawings will now be given.

Referring to said drawings- Figure 1 is a sectional elevation of a refining engine embodying the improvements; Fig. 2 is a cross section of the same on the line Q-2, Fig. 1, the section being taken through the coreand shell and showing the arrangement of the stone grinding bars;

Fig. 3 is an elevation of the plug or core;

Fig. t is a sectional plan view showing the interior of the shell to illustrate the novel arrangement of the stone grinding bars therein;

lgig. 5 is an end view of the plug or core, an y Fig. 6 is a cross section of the shell at the smaller, or intake, end, the section being taken on line 6 6 of Figft.

Referring now to the drawings, the invention has been shown as employed with an engine of. the Jordan type, the parts of which are supported von a base 1 of any suitable or desired construction. The refining engine shown comprises a stationary coneshaped shell 2 supported in any suitable manner, as hyp-standards 3, rising from the machine bed 1', and a cone-shaped plug or core which is supported to rotate within the shell 2. This core 4 is mounted on a shaft 5 journaled in suitable bearings 6 supported in standards 7 on the base 1. This shaft is mounted to have an endwise adjusting iro movement relatively to the plug, as is common in this type of machine, this endwise adjustment being given it by any suitable or usual mechanism, a description of which will be unnecessary for an understanding of the present invention, and therefore not shown. The ends of the shell are closed in any suitable manner, as by heads S, 9, the latter of which is located at the outer or delivery end of the machine, and is provided with a. delivery outlet 10. The other head S at the inlet end of the machine is formed tol provide a feed chamber 11 which is supplied through a throat 12 from a hopper 13.

lWhen machines of this type are to be employed for refining rejections or screenings of ground wood pulp or sulfite pulp screeningsand the like, which are relatively coarse, preferably a feeding device, as a.

screw propeller 14, is provided, which is carried on the shaft 5 before referred to, this l t jployed in refining stock other than rejections or screenings from ground wood or sulfite pulp, if desired, but its use may, if desired, be'omitted. Suitable means for rotating the shaft 5, and, with it, the core 4, may be employed, the shaft being rotated in the construction shown by a pulley 15 driven from a suitable source of power.

In machines of the type described, the shell and plug are provided with coperating grinding or disintegrating elements. Inv accordance with the invention, tbe shell and plug are provided with coperating grinding bars which are composed of basalt lava or similar stone, this material having been found to have certain advantages over bars of metal for refining coarse material as the rejections from ground wood or sulfite pulp. These stone bars are arranged in the shell and core in a novel manner, it having been found in practice that the bars ar-` ranged as about to be described, effectually reduce the screenings or rejections ofv ground wood or suifite pulp to a stock suitable to be run to the paper machines. The

- like the bars of the ments 20. These grooves are provided around the periphery of the roll in suhcient number to accommodate the required number of the stone grinding bars. These grinding bars are marked 21 and are inserted in the grooves 17, and each grinding bar is for convenience made in trwo sections a., b. In the preferred construction, these grinding bars increase in width from the inlet or small end of the plug to the outlet or large end, as shown in Fig. 3, and preferably are likewise similarly increased slightly in thickness, this construction in practice having been found to produce the best results.

The grinding bars are secured in the recesses in any suitable manner. In the construction illustrated (see Fig. 2) the grinding bars are provided on each side With a notch or groove 22, and they are anchored in the grooves 17 by a filling of cement or other suitable plastic holding material 23. The cement fills in around the abutment shoulders 20 of the projections 18 referred to and into the grooves or notches 22 in the bars. A small amount of cement is likewise filled in to cover the top surface of the projections 18, as shown in Fig. 2. With this construction, the bars are efectually lanchored against displacement in the grooves or slots, the cement covering the top of the projections not being filled in flush with the edges of the bars (see Fig. 2), but to some n extent below them, so as to leave grinding edges and recesses between such grinding edges, these recesses acting to assist in circulating the stock through the machine.

rThe shell is, as before stated, likewise provided with a plurality of grinding bars of basalt lava or other similar stone, which, plug, are arranged in the shell in a novel manner.

The'exact arrangement and means of sey curing the bars in the shell may be somewhat varied. To produce an etlicient grinding effect, the bars are arranged in the machine in what may be termed sets, that is, there are provided aI plurality of bars arranged end to end extending longitudinally the length of the shell. For convenience in construction, preferably these sets are arranged in groups, :1n-arrangementl being adopted whereby the bars of one group, which may be alike and similarly arranged, arc in staggered relation longitudinally of the shell with the barsof the succeeding groups. Four such groups are shown (Fig. 2) indicated by the numerals 24. 25, 2G. and 27, each group comprising a number of rows or sets of bars. The bars of each of these groups are alike and similarly arranged, and the bars of one group are in staggered relation longitudinally of the shell with the hars making up the succeeding group. While such arrangement is efficient and convenient, other arrangements may be adopted,

lit() nar/aaa@ as, for instance, as by staggering each set of bars with relation to the succeeding set.

In the particular construction illustrated, (see Figs. and l) the bars of group 2l., each of which Jfor convenience has been numbered 2l, are three in number arranged end to end longitudinallyv of the shell, and of a suitable number around or peripherally of the shell. The bars nearest the small or inlet end of the shell are preferably staggered with relation to the next bars longitudinally, and the bars preferably increase in width from the inlet or slnall end ot' the shell toward the outlet end. The bars of the next succeeding group. as 25', are, as shown' in Fig. l, arranged inrfours longitudinally of the shell, these bars being shorter than the bars of the group 2l and thus being in staggered relation' longitudinally of the shell with the 'bars 2l. These bars 25likewise may be arranged in staggered relation to each other longitudinallyA of the shell, and as some or them are shown, and these bars likewise increase in width from the.

inlet end to the outlet end of the machine. rl`he next succeeding group orysection 26 may have its bars arranged like the bars of group 2l, and the last group 27 may have its bars arranged like the group 25. With this construction, and by staggering one group of bars With relation to the neXt succeeding one longitudinally of theshell, a

very efficient grinding surface is produced.

which divide the shell into sections and are`| secured to the shell by screws 3l, or in any other suitable manner. Coperating with these iron bars are master Wedges 32 extending the length of the shell and provided with grooves 33 driven ,over the bars 30, this construction, with the independent wedges 29, eitectually locking the bars firmly in place and preventing them from becoming loosened, `or working around the interior or the shell.

lt has been found in practice that the capacity ot' a refining engine of given size can be materially increased by an increase in the number of feeding notches or grooves between the bars. This result can be obtained by increasing the number of bars around the plug, thus increasing the notches between the bars. Y-lZVhen these bars are made of basaltlava stone, however, they have to be of asubstantial width to stand the working strain, and it is therefore impracticable to materially increase the number ot these bars ltending feeding notches or grooves.

ance with the invention are provided with grinding bars of basalt lava stone, means ywill be provided for facilitating the feed and thereby increasing the capacity of the engine, without increasing the number of bars. This is accomplished by providing the bars of the plug with feeding notches or grooves. The bars may be arranged, as shown, -as two in number lengthwise of Ithe plug, onev ot the bars being in the particular construction illustrated shorter than the other. ln the best constructions, the short bar a will be provided with one groove marked c, and the longer bar b will be provided withy two of such grooves, these grooves running parallel with the length of the bars. lin the best constructions, the grooves in the bar b will be in staggered relation with the groove in the bar aso as to prevent the' stock from running through the rooves without being subjected to the grin ing action.

ln the best constructions, where the grinding elements of the. shell are basalt lava bars, these bars may, like the bars in the plug, be provided with longitudinally-ex- Such grooves are shown in the drawing marked d.

`With the construction shown and de scribed, a very efficient grinding machine is produced, and one by the employment of which material heretofore wasted can be made suitable for paper pulp ready to go to the paper machine. lWhile the invention has been described in its preferred form, it will be understood that various changes in the particular arrangement of the bars in both the plug and shell may be made without departing. troni. the invention, and that such lll@ changes and variations may be made as derelation with respect to the sets in a cirvcamferentially adjacent group.

2. ln a rening engine, a shell provided with groups of grinding bars arranged cir cumferentially or the shell, each group being made up ot sets of. bars arranged longitudinally ot the shell with their ends abutting, the number of sets in one group being di'erent from those of a succeeding group, the sets in one group being in staggered relation With respect to the sets in a circum- Lterentially adjacent group, and the bars oit lll@ certain of the sets of each group being in staggered relation at their' ends with the bars of an adjacent set in the saine group.

3. ln a refining engine, a shell provided with a plurality of groups of bars arranged around the shell, each group made up of sets of bars arranged longitudinally of the shell, the bars of each group being in staggered relation with the bars .of the succeeding group longitudinally of the shell, Wedge keys between the groups for anchoring thementially adjacent group, and a cooperating'v core.

5. In a refining engine, a core orplug comprising a shell having va grooved p'eriphery, grinding bars in the grooves, said grinding bars being provided with longitudinally extendinv holding lgrooves in the sides, and cement filled into the grooves in the shell and grooves in the bars for locking the bars inthe grooves.

6. In a refining engine, a core or plug provided with a plurality of grooves, sets of 'stone grinding bars in the grooves, each set comprising tWo bars increasing in Width vfrom one end to the other of the core, and

means independent of the bars for anchoru ing the bars in the grooves.

7. In a refining engine, va core or plug having a plurality of grooves, sets of stone grinding bars inthe grooves, one set lfor each groove, each set consisting of a plurality of barsl increasing in Width from one end to the other of the grooves, notches in the sides of the bars, and cement filling the grooves and the notches in the bars for anchoring the bars in the/grooves.

' 8. In a refining engine, the combination of a shell, a plurality of sets of stone grinding bars inthe shell, each set including a plurality of bars arranged longitudinally thereof, the bars of one set being in staggered relation longitudinally with the bars of a succeeding set, a core or plug mounted to rotate in the shell and having a plurality of sets of stone bars coperating with the bars of the shell, and a propeller for feeding material to the shell.

9. ln a refining engine, the combination with a shell, of a plurality of sets of stone grinding bars arranged longitudinally o the shell, said bars increasing in width from the inlet end of the shell to the outlet end, grooves in the bars, the grooves in cert-ain of the bars breaking joint with the grooves of other of the bars, and a core or plug mounted to rotate in the shell and having a plurality of stone grinding bars increasing in width frolm the inlet end of the shell to the outlet enc.

l0. In a refining engine, the combination with a shell, of a plurality of sets of stone grinding bars arranged longitudinally of the shell, said bars increasing in Width from the inlet end of the shell to the outlet end, grooves in the bars, the grooves in certain of the bars breaking joint with the grooves of other of the bars, and a core or plug mounted to rotate in the shell and having a plurality of bars extending longitudinally thereof, grooves in the bars breaking joint with each other, the bars vincreasing in Width from the inlet end to the outlet end. 11. ln a refining engine, a core or'plug having al plurality of grooves, sets of stone grinding bars in the grooves, one set for each groove,'each bar being provided With a feeding notch extending longitudinall thereof. f

12. In a refining engine, a core or plug having a plurality of bars extending longitudinally thereof, one bar being provided with a longitudinally-extending vfeeding notch and the next succeeding bar being pro- `vided with a plurality of longitudinally-extending feeding notches breakingjoint with the feeding notch in the preceding bar.

In testimony whereof, We have hereunto set our hands in the presence of two subscribing Witnesses.

EDWARD A. JONES. ROBERT J. MARX.' Witnesses:

A. WHITE, P. B. PHILHP.

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