US1617673A

US1617673A - Nozzle for paper-making machines

Info

Publication number: US1617673A
Application number: US730748A
Authority: US
Inventors: Dezurik Mathias
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-08-07
Filing date: 1924-08-07
Publication date: 1927-02-15
Anticipated expiration: 1944-02-15

Description

- 1,17,67 Feb.15,1927. M'DEZURIK 6 3 NQZZLE FOR PAPER MAKING MACHINES Filed Aug. 7, 1924 flya MQfZbJezam/f Bj/i Nev WW Xzorrzeyw PATENT OFFICE.

MATEIAS DEZURI K, O1 SABTELL, MINNESOTA-a NOZZLE FOR PAPER-MAKING MACHINES.

Application filed August 7, 1924. Serial-No. 730,748.

In the making of paper the stock in the form of finely divided fiber mixed with other materials, and a large amount of water, is brought in contact with a fine metal screen, known to the trade and designated hereafter as wires either in the formof an endless belt, as in Fourdriniermachines, or in the form of a cylinder as in other types of machines. A portion of water and soluble matter passes through the wire, while the stock 'is deposited on the wire as a thin film ble matter is partly recovered therefrom. It

is desirable to avoid using fresh water for this purpose, because such water if used, would further dilute the white water that had passedthe wiresin the paper making process, and would make it moredifficultto recover the stock from such Water. It is usually desirable not to use any more fresh water than is necessary in any part of the paper making process, but to perform the screen or wire-cleaning operations, and any other subsidiary o erations with white water, as the water t us used will return to or mingle with the white water, or water that has already passed through the wires, and ktherefore carry more or less of the paper stoc Prior to my-invention, it has been difiicult to use the white water for cleaning the wires, because the small particles of fiber and other 4 material contained therein would clog the openings in the showers that were employed for spraying the water against the wires.

The object of my invention, therefore, is to provide a nozzle by the use of a series of which arranged in line across the wire the white water can be used to shower the wire by an unbroken or continuous sheet or jet covering the entire width of the wire, without clogging the nozzles, without diminishing the force of the jet after leaving the discharge openings and without requiring operation of any auxiliary device for cleaning plugged nozzles, thereby making it unnecessary to use fresh water for cleaning pur- 5 poses either upon Fourdrinier or cylinder machines.

The invention consists in the construction and combination hereinafter described and particularly pointed out in the claim.

In the accompanying drawings forming part of thisspecification,

Fi ure 1 is an elevation of a shower consisting of a series of nozzles embodying my invention, showing the relation of the same to the wire of a Fourdrinier machine;

Figure 2 is a transverse section of the device shown in Figure 1;

Figure 3 is a side elevation of one of the shower nozzles;

Figure 4 is a section on the line 44 of Figure 3;

Figure 5 is an end view of Figure 3;

Figure 6 is a View similar to Figure 4, showing one of the end nozzles;

Figure 7 is an end view of Figure 6;

Figure 8 is a modified construction showing a smaller nozzle.

In the drawing, 1 represents .a nozzle forming one of the shower units. Each nozzle has a c lindrical bore, of uniform diameter, exten ing through it up to the discharge opening. A pipe 6 is connected with a main supply pipe 5, by a coupling and valve connection 7. The nozzles are preferably vall arranged in the pipe section 6 in a single plane and with their discharge openings in line with one another as indicated in Figure 1. One end of each nozzle is preferably contracted and is outwardly flared as shown at 4; and an elon ated discharge opening 2 is provided in this end; its ends extending backward to points on a plane extending transversely through the full diameter of the unit (see Figure 4, line ab).

As will be seen by an examination of Figure 5, the discharge opening is slightly greater than the inner diameter of the nozzle forming the unit (Figure 5). The lips 3, at the discharge opening of each nozzle are in parallel planes, and are spaced from each other a suitable distance, determined by the size of the fiber or paper making material used.

With this construction and arrangement, the white Water passing through the shower unit is spread out into a comparatively thin and uniform sheet with undiminished force, and the nozzles being pro erly spaced the edges of the sheet from each nozzle meet the edges of the sheet from the two adjoining nozzles, thereby forming a continuous and solid sheet the full length of the shower, and

the full width of the wires to which the shower is applied. Also with this construction and arrangement white water from'the machine pits or machines may be employed altogether for cleaning the wires. With. the

shape, arrangement and size or the discharge openings of the nozzles, white water direct from machine pits or machines may be used without reducing amount of fibers or consistency of the white water by use of saveallsr Each nozzle is preferably provided with threads 8 for'securing it to the pipe 6.

I am therefore able with a showercomprising a series of these nozzles to use white water from machine pits, machines or savealls entirely for cleaning the wires and without the units becoming clogged or choked with the fiber or material carried by the white water and with undiminished force after leaving discharge openings of nozzles. By mounting the pipe 6 so that it can turn in its bearings the angle at which the sheet of water strikes the wire can be varied, as indicated in Figure 2, to get the greatest cleaning efiect. The end nozzles 1 of each shower unit are preferably provided with a relatively shorter discharge opening 2 as shown in Figures 6 and 7, thereby to prevent the nozzle from spreading the water on the side adjacent the edge of the wire belt.

In Figure 8 there is shown a nozzle of modified construction. This nozzle is similar in general outline to the nozzle shown in Figures 3, 4 and 5 but is relatively smaller in size.

I claim as my invention:

A shower nozzle for washing paper making machine screens with white water consisting of a cylindrical body portion having an axial bore of uniform diameter throughout and a terminal discharge portion contracted in one dimension and having its opposite dimension not substantially exceeding the diameter of said cylindrical body portion, said discharge portion having a discharge slot defined by parallel lips and coextensive with its greatest dimension and extending substantially to the cylindrical portion, said discharge slot being sufficiently large to prevent'clogging of the nozzles by the fibers and other foreign material in the white water.

In witness whereof, I have hereunto set my hand this 31st da of July 1924,

- MA HIAS DEZURIK.