US1960753A - Refining and beating engine - Google Patents

Description

May 29, 1934. ca. P.' PRATHER I 1,960,753-

: REFIN'ING AND BEATING ENGINE v Filed May 23, 1933 4 Sheets-Sheet 1 v M y 1934- G. P. PRATHER I 1,960,753

REFINING AND BEATING ENGINE Filed May 25, 1953 4 Sheets-Sheet 2 May 29, 1934. H R 1,960,753

REFINING AND BEATING ENGINE Filed May 23. 1933 4 Sheets-Sheet 3 May 29, 1934. P THE 1,960,753

REFINING AND BEATING ENGINE Filed May 23, 1933 4 Sheets-Sheet 4 Maw;

Patented May 29, 1934 PATENT OFFICE REFINING 'AND BEATING ENGINE Graham P. Prather, Adams Center, N. Y., as-

signor to Dilts Machine Works, Inc., Fulton,

Application May 23, 1933, Serial No. 672,477

6 Claims.

This invention relates to refining and beating engines designed to act upon materials used in the manufacture of paper. This invention is adapted to utilize a tub of somewhat similar construction to a beater tub or vat, and. employing in this vat a refining element generally similar to a Jordan plug and shell. It is the object of this invention in its broadest aspect to make the interior of the plug, whether the plug be frusto-conical or cylindrical, in the form of a screw, worm, or equivalent propelling means, and differing from the conventional type of plug in that there is no wood, metal or other filling between the bars, the bars being carried by the propelling means in spaced relation. This permits centrifugal force to act upon the stock propelled through the interior of the plug, and this stock is thrown outwardly and is acted upon by the knives of the shell or plug or both. The worm form construction insures a positive feed for the stock at all times irrespective of the density, and will likewise create definite cireulation of the mass of stock around the tub and midfeather. The direction of the flow may be in either direction depending upon the revolution of the propelling means, although it is thought to be the more effective method to have the stock enter the large end of the shell and plug and discharge at the small end, since this coursewould have the effect of building up a higher pressure of the stock between the plug and shell and attain greater hydration. This invention is in no sense limited to the direction in which the stock passes through the apparatus, or to the pitch or slant of the portions of the propelling means, various modifications of which are illustrated in the accompanying drawings.

Fig. 1 of the drawings represents a side view of a refining engine, partly in vertical longitudinal section, and showing all parts assembled.

Fig. 2 is a top view of a tub, showing the midfeather and this invention in conical form arranged between the midfeather and one wall of the tub.

Fig. 3 is a top view of a tub, showing the midfeather and this invention in cylindrical form arranged between the midfeather and one wall of the tub at the side of the tub, as in Fig. "2.

Fig. 4 is a vertical cross section of the parts and on the broken line 44 of Fig. 3.

Fig. 5 is a longitudinal section of a shell of artificial stone or like material, showing a spiral propelling device of similar material having the peripheral face of the spiral fluted and adapted to coact with the interior of the shell.

Fig. 6 is a spiral of artificial stone or the like, the face of the spiral being grooved or slotted or recessed, and the grooves provided with short individual bars.

Fig. 7 is a longitudinal section of a shell provided with internal knives, the propelling means being a plurality of bladed propellers of differing size and pitch, and carrying peripherally the usual bars or knives arranged to coact with the Y knives of the shell.

Fig. 8 is an end view of the propelling members set forth in Fig. 9-.

Fig. 9 is a-longitudinal section of a shell with propellers arranged therein and provided with bars or knives to coact with the like features of the shell, the propellers being substantially of the same size.

Fig. 10 is a top view of a tub or vat having a V-shaped midfeather, and provided with this invention arranged transversely at one end of the tub between the wide end of a mid-feather and the end wall of the tub.

Throughout the drawings and description the same numbers .are used to refer to the same parts.

Considering the drawings, Fig. 1, a base 1, has bearing standards 2 and 3 for" shaft bearings 4 and 5 carrying shaft 6. The shaft may be driven by pulley 7, and adjusted in either direction by means of the hand wheels 8 and 9 and the screw 10. Those parts are of ordinary structure and operation in engines of this nature, and form no part of this invention.

At one end is located a flanged pipe coupling 11 having a stufling box 12 for the passage of the shaft 6. By way of this pipe the stuff may enter or leave the shell 13, having the internal knives 14, and co-operating with a spiral propelling element 15, provided with any number of spaced fiybars 16 secured in grooves 17 and without filling between the the spaced bars as illustrated. At the other end of the shell is located a second pipe coupling 18 with a stufl'ing box 19 for the shaft, and in Fig. 1 will be noted the removable spacer rings 20 and 21 that enable the wear of the shell tobe taken up in accordance with the Letters Patent of the United States numbered 1,873,199 and owned by the assignees of all rights in this instant invention.

Considering Fig. 2, the tub 22 has the midfeather 23, and a shell or other enclosure 24 which may v vide with bars or knives 30, or other devices capable of coacting with the knives carried by the shell in the customary manner. In this figure the shell and spiral are of frusto-conical form.

Considering Fig.3 the tub31 hasthe midfeather 32, and the lower portion of the shell, or enclosure for the propelling devices and marked 33, has a curved bed plate 34 provided with knives or the like arranged to coact with the-beater roll, as best shown in the sectional view Fig. 4 The lower shell portion 33 has a removable cover 35. Shaft 36 is carried in adjustable bearings 3'7 and 38, and means are included for raising or lowering the hearings to adjust the beater roll devices with respect to the bed plate 34 when required. The adjusting parts for the bearings-comprise a worm wheel 40 at the right hand end. in combination with a worm such as the worm 41 on shaft 42,

the shaft being actuated by the handwheel 43. The shaft may be driven by the pulley 39, and the means for raising and lowering the bearings is substantially the same as illustrated and described in Letters Patent of the United States Numbered 820,137, dated May 8, 1906. Carried by the shaft 36 are the usual beater bars 44 on the spiral propelling means 45, which in Figs. 3 and 4 is cylindrical.

Fig. 5 represents a longitudinal sectional view of a shell 46 of stone composition, and the spiral propeller 47 on the shaft 48 is also of similar material with a relatively wide peripheral surface or face having fluted formations 49. Obviously, these shapes may be variously modified within the purview of this invention. a

. Fig. 6 sets out a longitudinal section of another modification, wherein the spiral 50 with the widened face and carried by shaft 51, has short bars 52 in grooves 53. In this view are also illustrated depressed recesses 54, and it is believed to be within the scope of this invention to form the face of the spiral with projections, depressions of any chosen shape. The use of a shell and worm plug constructed of stone, basalt, carborundum or other abrasive materials which are now employed in Jordan and beater rolls, and having the faces of the worms widened out to present'a substantial surface area in contact with a similar stone or abrasive shell interior gives the effect of high brushing efficiency without cutting. The introduction of a worm for propelling the stock as herein described is more effective and also the brushing is being carried on over the entire interior surface of the shell instead of by means of a bedplate beneath the roll as in present beater constructions.'

Fig. 7 presents a longitudinal sectional view of a shell 55, with knives 56, arranged to coact with knives 57 on rings 58. Within the rings and attached thereto or integral therewith are bladed propellers 59, 60 and61, which may be of different pitch, and it may be further mentioned at this point that the spiral propelling members described may vary in slant or pitch if -so desired, and where it is intended to vary the movement or throw of the stufi. In Fig. 7 the propellers are on the shaft 62.

Fig. 8'is an end view of the construction illustrated in Fig. 9, which is a section lengthwise of a'shell 63 having the knives 64 coacting with knives 65 on rings 66. The propellers 6'7, 68 and 69 are attached to the rings 66 or integral therewith as previously explained, and the propellers are carried by shaft 70. In Figs. 8 and 9 the propellers are of substantially the same diameter.

Fig. 10 represents a top view of a tub ,71, havmotor 80.

In the operation of this invention, as previously mentioned, the stuff is served to the shell at either the larger or the smaller end thereof, and the process may be carried forward. at considerable velocity. One objection to the use of Jordans in the place of heaters is that several of them have to be connected in series, the stock passing immediately from one to the next in order to get a comparable reduction in fibre and hydration to that obtained in a beater, and the stock is apt to heat up to a critical temperature. With the construction as herein shown and described thestock has a chance to aerate in the large vat and at the same time the elements illustrated may work on it as many times as necessary to effect the complete reduction.

Having now described this invention and the manner of its use, I claim:

1. A pulp beater having in combination, a beater casing, a beater roll in said casing comprising pulp propelling devices provided peripherally with means adapted to cooperate with said beater casing and to act upon stuff thrown outwardly by said propelling devices against the interior of the casing, the said propelling devices being constructed to propel the pulp at different rates of speed at different points lengthwise of said casing.

2. A truncated conical beater roll comprising a shaft, a truncated conical worm upon said shaft forming a spiral passage for propelled stuff, and beater bars running across the outer edges of said worm blades, forming the surface of the truncated conical roll, said bars running longitudinally with the said shaft and being fastened at intervals upon the periphery of the said conical worm and across said spiral passage.

3. In a beating engine, a tank having a channel at one end forming a shell having internally means adapted to act upon stuff passing through the channel, a midfeather extending lengthwise in the tank and having one end in contact with and equal in width to the length of said shell, said midfeather having converging sides, and a beater roll in said shell having externally means adapted to act upon stuff passing through against the shell, and having devices constructed to propel stuff through the roll and channel and to throw the stuff centrifugally against the shell.

4. In a beating engine, in combinatipn, a shell having interiorly a series of knives extending lengthwise, said knives being located at intervals entirely around the interior of the shell, a shaft, a worm carried by the shaft, the outer spiral edge of the worm being widened and provided with means on said widened edge to co-act with the said knives of the shell upon stuff passing through and thrown outwardly against the knives.

5. Ina beating engine, a shell of cementitious material, a shaft, a worm of cementitious material carried by the shaft and having a widened outer edge constructed to co-act with the interior of the shell upon stuff propelled through the shell and thrown outwardly against the shell.

6. In a beating engine, in combination, a shell having interiorly a series of knives extending being constructed and arranged to move stufi through the shell in one direction and to throw the stud outwardly between the ends of the shell and upon the knives of the shell.

GRAHAM P. PRATHER.

Images