US2900023A

US2900023A - Table roll and deflector suction device

Info

Publication number: US2900023A
Application number: US577386A
Authority: US
Inventors: Hornbostel Lloyd
Original assignee: Beloit Iron Works Inc
Current assignee: Beloit Iron Works Inc
Priority date: 1956-04-10
Filing date: 1956-04-10
Publication date: 1959-08-18
Anticipated expiration: 1976-08-18

Description

Aug. 18, 1959 L. HORNBOSTEL 2,900,023

TABLE ROLL AND DEFLECTOR SUCTION DEVICE Filed April 10, 1956 [TI/E17 [UP A; 0 YD hoe/vaasrzz.

United States Patent G TABLE ROLL AND DEFLECTOR SUCTION DEVICE Lloyd Hornbostel, Beloit, Wis., assignor to Beloit Iron Works, Beloit, Wis., a corporation of Wisconsin Application April 10, 1956, Serial No. 577,386

6 Claims. (Cl. 162-352) This invention relates to paper machines, and more particularly, to an improved table roll arrangement in a paper machine. The table rolls or tube rolls are a number of parallel rolls of steel or brass tubing designed to support the wire by forming a level table on which the wire runs just after it passes beneath the slice. These rolls are ordinarily relatively small in diameter ranging from about 2 inches to as much as 6 or 7 inches in diam eter for the modern wide paper machines. The journals are usually supported in bearings adjustably attached to the shake rails or other suitable supporting members, if shake rails are not employed. The table rolls do more than support the wire in that they carry off water or white water from beneath the surface of the wire. The instant invention resides in a discovery concerning more elfective control of water removal caused by the table rolls.

In fact, the instant invention is based upon the discovery of a specific type of table roll and deflector arrangement which permits controlled water removal through the wire by a controlled pumping action. Such pumping action is effected by positioning the deflector in close running relation to the wire and the roll at the downrunning side of the roll.

It is, therefore, an important object of this invention to provide an improved table roll arrangement.

It is another object of the instant invention to provide a table roll arrangement wherein a deflector is mounted in close running relation to the table roll and the wire so as to effect a desired pumping action to draw Water through the Wire.

. Other and further objects, features and advantages of the present invention will become apparent to those skilled in the art from the following detailed disclosure thereof and the drawings attached hereto and made a part hereof.

On the drawings:

Figure 1 is essentially a diagrammatic view, shown in elevation, of a forming Wire and table roll supporting the same in an arrangement embodying the instant invention;

Figure 2 is a diagrammatic elevational view showing the forming wire with associated table roll and deflector wherein the table roll and deflector arrangement is different from that shown in Figure 1 for accomplishing a different pumping effect; and

Figure 3 is a view comparable to Figure 2 showing still a different positional relationship between the deflector and and a table roll.

As shown on the drawings:

In Figure 1 the table roll and forming wire arrangement, indicated generally by the reference numeral 10 comprises a travelling forming wire 11 carrying stock S thereon, a table roll 12 rotatably supporting the Wire 11 from beneath, and a deflector 13 extending from close running relation beneath the wire at 13a along the downrunning side (indicated by the arrow) of the roll 12 conforming at 13b to the arcuate contour of the roll 12 and in close running relation thereto to effect a pumping ac- "ice tion between the roll 12 and the deflector 13 to assist in drawing water through the wire 11.

Actually, the arrangement 10 of Figure 1 comprises a plurality of

table rolls

12, 12, etc. each provided with a deflector, 13, 13, etc. mounted in the manner just described. As indicated diagrammatically with respect to the table roll 12, each of the table rolls is mounted with its journals 12a rotatably supported by bearings 14' mounted on pedestals 15 mounted on shake rails 16 or other suitable supporting members. In order to simplify the drawing the bearing support means for the journal 12a of the first table roll 12 are omitted.

It will also be noted that drive means D and D are indicated diagrammatically in Figure 1 connected to the

journals

12a and 12a, respectively, for assisting in driving the table rolls 12 and 12'. As a general rule the

table rolls

12 and 12 are driven by frictional engagement with the underside of the wire 11 and are mounted for free rotation so as to obtain a minimum of wear between the wire 11 and the

rolls

12 and 12. In the practice of the instant invention, however, a better pumping action may be obtained by the use of helper drive means D and D to assist in turning the

rolls

12 and 12, as will be explained hereinafter.

It will also be noted that each of the rolls 12 and 12' is provided with secondary deflector means 17 and 17 mounted therebeneath in close running relation to the bottom side of the

rolls

12, 12 so as to prevent the rolls 12, 12' from carrying water around on the surfaces thereof and to control the flow of water in a generally downward direction across the front of the secondary deflectors 17, 17'. In addition, the

deflectors

17, 17 are mounted so as to be in relatively close running relation to the

primary deflectors

13, 13 when the same are in the pumping position shown in Figure 1.

In Figure 1, it will also be noted that the deflector 13 follows closely the arcuate contour of the roll 12 along substantially the entire downrunning side thereof, or at least for the first quadrant of the downrunning side, so as to insure effective pumping in this critical region. In order to obtain a better pumping effect, however, the deflector 13 has a base portion 130 which is mounted in relatively close running relation to the secondary deflector 17, as hereinbefore mentioned. The base of the deflector 130 is also provided with adjustable mounting means, indicated generally at 18, for the deflector 13 adapted to move the deflector'13 toward and away from the roll 12 to selectively control the pumping action between the roll 12 and the deflector 13. Although such adjustable mounting means 18 may have a number of forms, it will be seen here that the means 18 comprises an upright post 19 carrying a pair of bolt and

lock nut units

20, 20 which secure a pair of slotted

arms

21, 21 to the post 19 and the

slotted arms

21, 21 are both firmly secured to the base portion 13c, as by welding, of the deflectorv 13. The slots in the

arms

21, 21 permit adjustable movement of the deflector 13 toward and away from the roll 12. A similar adjustable mounting means 18' is provided for the deflector 13'.

As shown in Figure 1, the deflectors 13, 13' and the rolls 12, 12' are mounted in close running relationship so as to obtain maximum pumping effect, which involves spacing the deflector 13 from the outer periphery of the roll 12 approximately inch under ordinary operating conditions.

If, as is shown in Figure 2, wherein parts representing the same parts as are shown in Figure 1 have the same reference numerals in. the series, the deflector 113 is spaced a substantial distance from the roll 112, although still in close running relation to the bottom of the wire 111, it will be appreciated that the spacing of perhaps one or more inches between the deflector 113 and the roll 112 will render any pumping effect therebetween negligible. On the other hand, there is still a slight pumping eflect resulting from the separation of the roll 112 from the wire 111 in the region V. This is because of a partial vacuum which is created at this location V through separation of the travelling members 111 and 112. In fact, by moving the deflector 113 into close running relation with the roll 112 this vacuum is retained so that the pumping effect is greatly magnified to the extent obtained in the arrangemeat of Figure 1. Nevertheless, some pumping effect is obtained when the deflector 113 is spaced from the roll 112 to the extent indicated in Figure 2. Also, the particular pumping strength of the vacuum obtained in the region V may be varied some by varying the drive for the roll 112. For this reason the drive means D, D are provided in the embodiment 11} of the instant invention. As will be appreciated, a roll 12 (Figure 1) that is being rotated solely by frictional engagement with the wire 11 will have less pumping effect than the roll 12 when driven by the means D so as to rotate at least at the speed of travelling wire 11, or even so as to slightly drive the travelling wire 11.

If, as shown in Figure 3, wherein parts which are the same as those shown in Figures 1 and 2 have the same reference numerals in the 200 series, a deflector 213 is moved into extremely close running relationship with a table roll 212 of perhaps five or ten thousandths of an inch the pumping efleot of the roll 212 is substantially completely eliminated. Actually, the amount of water passing from the stock 8-2110 through the wire 211 is so great that the small passageway between the deflector 213 and the roll 212 is continuously filled up and no partial vacuum can be created. At least any partial vacuum which might be created is relieved by incoming water through the wire 211 and/or air travelling over the top of the deflector 213. The net result is that no pumping action is obtained. It will thus be seen that the instant arrangement not only provides for an extremely strong pumping action in the position shown in Figure l, but

it also provides for eliminating entirely an inherent rela tively small pumping action, when such is desired.

It will be understood that modifications and variations may be effected without departing from the scope of the novel concepts of the present invention.

I claim as my invention:

1. In a paper machine, a travelling forming wire carrying stock thereon, a table roll rotatably supporting the wire from beneath, and a deflector extending from close running relation beneath the wire along the downrunning side of the roll conforming to the arcuate contour of the roll and in close running relation thereto to effect a pumping action between the roll and deflector to assist in drawing water through the wire.

2. In a paper machine, a travelling forming wire carrying stock thereon, a plurality of table rolls rotatably supporting the wire from beneath, and a deflector for each each roll extending from close running relation beneath the wire along the downrunning side of the roll conforming to the arcuate contour of the roll and in close running relation thereto to effect a pumping action between the roll and deflector to assist in drawing water through the wire.

3. In a paper machine, a travelling forming wire carry- 7 roll and deflector to assist in drawing water through the wire. v

4. In a paper machine, a travelling forming wire carrying stock thereon, a table roll rotatably supporting the wire from beneath, a deflectorextending from close running relation beneath the wire along the downrunning side 7 of the roll conforming to the arcuate contour of the roll and in close running relation thereto to efiect a pumping action between the roll and deflector to assist in drawing waterthrough the wire, and adjustable mounting means for said deflector adapted to move the deflector toward and away from the roll to selectively control the pumping action between the roll and deflector.

5. In a paper machine, a travelling forming wire carrying stock thereon, a table roll rotatably supporting the wire from beneath, drive means for rotating the roll, a deflector extending from close running relation beneath the wire along the downrunning side of the roll conforming to the arcuate contour of the roll and in close running relation thereto to effect a pumping action between the roll and deflector to assist in drawing water through the wire, and adjustable mounting means for said deflector adapted to move the deflector toward and away from the -roll to selectively control the pumping action between the roll and deflector.

6. In a paper machine, a travelling forming wire carrying stock thereon, a table roll rotatably supporting the wire from beneath, a first deflector extending from close running relation beneath the wire along the downrunning side of the roll conforming to the arcuate contour of the roll and in close running relation thereto to eifect a pumping action between the roll and first deflector to assist in drawing water through the wire, a second deflector in close running relation to the bottom of the roll mounted opposite said first deflector to define therewith a conduit for the removal of water, and adjustable mounting means for said first deflector adapted to move the deflector toward and away from the roll and thesecond deflector to selectively control the pumping action between the roll and the first deflector.

References Cited in the file of this patent UNITED STATES PATENTS 1,577,897 Danninger Mar. 23, 1926 1,638,975 Antoine Aug. 16, .1927 2,170,109 Berry Aug. 22, 1939 2,276,877 Rolls g Mar. 17, 1942 2,694,345 Hornbostel Nov. 16, 1954 2,718,180 Hornbostel Sept. 20, 1955 2,744,454 Wagenknecht .May 8, 1956 2,756,650 Lee July 31, 19 56