US1744892A

US1744892A - Wire-washing device for paper-making machines

Info

Publication number: US1744892A
Application number: US244572A
Authority: US
Inventors: Alfred F Helin
Original assignee: BAGLEY AND SEWALL Co
Current assignee: BAGLEY AND SEWALL Co
Priority date: 1928-01-05
Filing date: 1928-01-05
Publication date: 1930-01-28
Anticipated expiration: 1947-01-28

Description

JanrZS, 1930. v pp, HELlN 1,744,892

WIRE WASHING DEVICE FOR PAPER MAKING MA CHINES Filed Jan. 192s ALFRED F. ZEELIN', F WATERTO'W'N, NEW YGRK, ASSIGNOE -.0 THE BAG-LEE -AND SEWALL CQMFANY, @F WATERTOWN, NEW $203K, A CORPQBATIGN 03 NEW YORK WiBE-WASHING DEVICE FOR.- FAPER-IEAKIIQ'G: MACHINE$ from the couch roll to the breast roll, at which latter point the stock is flowed onto the wire in making the web. v

Various spray or water shower devices have been suggested, which are disposed so as to directthe water against the wire, and such devices will clean the wire where a sufiicient quantity and pressure of water is available. in paper making machine ractice, however, the water which it is desira is to use for this wire cleaning purpose is what is. known as white water, which is taken from the stock circulating system. The amount of this white water is limited and it is therefore necessary to economize in the use of this white water.

The special object of the present invention is to produce an improved spray nozzle which will deliverthe water in a flat spray across the wire, this water being delivered in substantially a straight line of substantially uniform pressure across the wire. This has been eii'ected by the use of a nozzle of peculiar form and shape, which forms the important feature of this invention.

With this and other objects not specifically referred to in view,-the invention consists in certain novel parts, arrangements and combinations which willbe describedin the accompanying drawings showing a preferred embodiment of the invention and the novel features will then be pointed out in the claims hereunto annexed. I

in these drawinis Figure 1 is, a 'agrammatic, partly broken away, side elevationof so much of a Fourdrinier machine as is necessary for an understanding of the invention;

Figure 2 is a partly sectional, partly broken away view or" the improved sprayer, the

Application filed January 5, 19:23. fierial filo. 244,572. v

view being taken in the direction of arrow 2 of Figure 1;

Figures 3 and l are enlargeddetail sec tional views of one of the nozzles, Figure 3 being taken on line 3-3 of Figure 2 and Fig ure 4 being taken on line 4-4 of Figure 3;

Figure5 is anenlarged detail view of the spray pipe, the view being taken'in the direction of arrow 5 of Figure 2, and

Figure 6 is a detail view showing the spray, looking at it edgewise.

Referring now to these drawings, the usual Fourdrinier machine has been diagrammatically indicated, including

suitable framing

1, 2, a breast roll 3 and a couch roll 4. The making wire is indicated at 5, this'making wire passing over the usual table rolls 6 and suction boxes 7. The wire in its travel passes from the breast roll 3around the couch roll 4: and back to the breast roll.

In accordance with the invention, a sprayer device of novel and improved construction has been provided for directing a steady and uniform spray against the wire as it returns from the couch roll to thebreast r'oll, this sprayer being indicated generally by the numeral 8 1n Figure 1. K In accordance'with the invention, an improved spray nozzle has been provided which will efiect a maximum spraying or cleaning action on. the wire with a minimum amount ofwater used. While the specific construction of this spray nozzle may be varled to a certain extent, there is provided a'nozzle pipe provided with peculiarly formed nozzles or spray orifices which, because of their shape, may be located at considerabledistances apart, and which act to form a flat spray, this spray striking the wire at a substantially uniform pressure across thewidth of the wire.

It has been found in practice that this sprayer will efiecta suitable cleaning of the wire and at the same time will eiiect a great economy in the amount of water used, so that the white water from the stock circulating system may be used. As shown, the sprayer includes a spray pipe 9 .connected to a supply pipe 10 to which white water is supplied from any suitable point in the stock circulating systern. This spray pipe is provided, on. one

I strikes the Wire.

The nozzle is conveniently formed by first side, with a number of spray nozzles or oritransversely of the pipe, and the outlet ends fices 11, these being, as shown, located at conof which are elliptical lengthwise of the pipe. In testimony whereof, I have hereunto setsiderable distances apart in the pipe. ljhe spra produced by these nozzles is that indicate in Figures 2 and 6, that is, it is a flat spray, being very thin, as viewed edgewise, as shown in Figure 6, and spread widthwise, as shown in Figure 2, so as to form a substantially continuous spray across the length of the wire, the pipe 9 being located a suitable distance from the Wire so that the water from the nozzles meet at the wire, as shown in Figure 2, to form a substantially continuous spray.

Referring to Figure 3, it will be observed that the walls of the orifices are shaped so that they contract from the inside of the pipe 9 to the outside, as indicated at 12, thus acting to form the thin edge spray across the wire of Figure 6. Referring to Figure a, however, it will be seen that the orifices considered longitudinally of the pipe widen from the inside of the pipe to the outside, as indicated at 13, this shape of the nozzle causing the formation of the fan-like spray shown in Figure 2. Referring to Figure 5, it will be my hand.

observed that'the outer rim of the orifices is an ellipse, this shape having been found to give a more uniform pressure of the spray widthwise of the wire at the point where it drilling a hole in the pipe of a convenient size, which hole is then reformed by means of a suitable tool which will give the desired shape to the nozzle.

It will be understood that the shape, the size and the spacing of the orifices depend on the pressure used and the distance of the spray pipe from the wire, these parts being so arranged as to eiiect the spraying action in. a thin line of substantially uniform pressure across the width of the wire.

lVhile the invention has been shown and described in its preferred form, it will he understood that certain changes and variations may be made in the particular construction and arrangement of the parts without departing from the invention as defined in the appended claims.

\Vhat I claim is:

1. In a Fourdrinier paper making machine,

the combination of the making wire. a spray.

pipe extending across the wire for directing wash water against the wire, and spaced nozzles or orifices formed in the wall of the pipe, the walls of which orifices converge transversely of the pipe.

2. In a Fourdrinier paper making machine, the combination of the making wire, a spray pipe extending across the-wire for directing Wash Water against the wire, and spaced nozzles or orifices formed in the wall of the pipe, the walls of which orifices converge ALFRED F. HELIN.