US1669412A - Stock-consistency regulator for paper machines - Google Patents

Description

M. DE ZURIK STOCK CONSISTENCY REGULATOR FOR PAPER MACHINES Filed" mg; is, 1926 WATER \Sl/PPLYPIPE 48 3 Sheets-Sheet J m NWMM m mn w W mud w w M M M r a w May 15, 1928.

May 15, 1928. 1,669,412

M. DE ZURIK STOCK CONSISTENCY REGULATOR FOR PAPER MACHINES I Filed Aug. 13, 1926 3 Sheets-Sheet 2 \1 [N VENTOR U Mfl THl/ISDEZl/fi/K 'irron/vzxs Patented May 15, 1928.

PATENT OFFICE.

MATHIAS DE ZURIK, OF' SARTELL, MINNESOTA.

STOGK-CONSISTENCY REGULATOR FOR PAPER MACHINES.

Application filed August 13, 1926. Serial No. 128,986.

This invention relates to an improved ap paratus for automatically regulating the consistency of the stock or pulp in paper mills to render it uniform in density before it reaches the paper making -machines, thereby causing the resultant paper to be of umform weight and thickness.

An object of the invention is to provide a stock consistency regulator, comprising members suspended in the flowing stock at different locations, and adapted to be actuated by the movement thereof, each member having a connection withan indicating means whereby the consistency of the stock will be indicated, one of said members having a connection with a source of water supply, whereby, when the stock thickens to a predetermined degree, water will be automatically added and thoroughly intermixed with the stock before it reaches the second member, and conversely, if the supply of stock to the regulator becomes thinner, where it reaches a predetermined degree of thinness, the supply of water thereto will automatically be cut off, thereby causing the stock, as it is discharged from the regulator for delivery to the paper making machine, to be of uniform density, the second member indicating the density of the stock as it is discharged from the regulator.

A further object of the invention is to provide a regulator comprising a structure having a mixing box to which the stock is delivered, and from which it flows over and under a series of baflie plates forthorough mixing, thence through a sieve or grate into a chamber having a member mounted therein adapted to be actuated by theflow and consistency of the stock to automatically add, lessen, or shut OK the supply of water to the stock, after which the stock passes through a mixing box or chamber, intoa lower chamber also having a member arranged therein, and actuatable by the flow of the stock, to indicate the consistency thereof. before it is discharged from the regulator for delivery to the paper making machine.

A further object is to provide a regulator having a water control device comprising a casing divided by a partition preferably centrally arranged to form two chambers, one of which has a pipe leading therefrom with its discharge end positioned over the flowing stock, and the other having a waste pipe connecting it with a drain or other receiving means, and a water supply nozzle movably disposed above said partition and actuatable by regulating mechanism controlled by the consistency of the stock to swing the nozzle from one chamber to the other, the partition having preferably an upper knife edge functioning to divide the stream of water from the nozzle, whereby the full stream of water may be discharged into either chamber, or may be divided by the partition and a part caused to enter each chamber, a portion of the water being thus delivered to the stock while the remainder is discharged as waste.

A further object is to provide a stock consistency regulator of simple and inexpensive construction with means for automatically and positively regulating the consistency of the stock.

The particular object of the invention,

from the following description and the accompanying drawings and will be pointed out in the claims. I

The accompanying drawings disclose a structure designed to carry out the various objects of the invention, but it isto be understood that the invention is not confined to the features shown, as various changes may be made within the scope of the claims which follows.

In the drawings:

Figure 1 is a sectional elevation showing the general construction of my improved regulator and also indicating the travel of the stock therethrough;

Figure 2 is a vertical sectional View on line 2-2 of Figure 1;

Figure 3 is a plan view of the structure shown in Figure 1;

, Figure 4 is an enlarged detail sectional view on the line H of Figure 1, showing the water control device;

tit?

Figure 5 is a detail sectional view on the line 5-5 of Figure 4, showing the partition in the casing and the movable nozzle dis posed thereover;

Figure 6 is a horizontal sectional view, on line 66 of Figure 4, showing the angular position of the water discharge nozzle with respect to the knife edge of the partition; an

Figure 7 is an elevation, partially broken away, of the indicating means. v

The improved regulator embodying this invention comprises an elevated mixing box 11 having a feed pipe 12 connected therewith through which the material is fed from a suitable source. An elongated opening 13 is provided, in the wall 14 of the mixing box through which the stock or pulp flows by gravity into a relatively smaller chamber 15 having a passage 16 at the bottom thereof through which the material passes as indicated in Figure 1. The material then flows over a sieve or grate 17 through which it is precipitated into a second mixing Chamber 18. A baffle wall 19:is preferably positioned over the grate 17 and spaced therefrom, as shown, to further increase the mixing of the stock and also to direct it onto the surface of the grate. The material too coarse to pass through the grate, will be discharged onto a board or plate 21 from which it may readily be removed. I

From the second mixing box 18, the material fiows through an elongated opening 22 and into a chamber 23, having a dam 24 at the discharge end thereof, functioning to maintain the stock at a constant depth in the chamber. 7

Means are provided for adding additional water to the stock in the event that it becomes too thick for the paper making machines by which it is transformed into paper. Such means consists of a member 25 arranged in the chamber 23, that is engaged by the stock as it flows through the chamber. This mem ber 25 is preferably conical in shape, and is supported by means of across shaft 26 journaled in bearings secured to the side walls 27 of the chamber 23 (see Fi ures 1, 2 and 3). An indicator 28, mountc upon and secured to a shaft 29, is connected with the member 25 by means of a connecting rod 31 and crank arm 32 secured to the crossshaft 26, as shown in Figure 3. The indicator 28 is preferably oflset, as shown in Figure 4, and projects through a curved slot 33 provided in a plate 34 having a mark 35 in the upper portion thereof, which cooperates with the indicator 28 to indicate the consistency of the stock passing through the chamber 23.

A water control box 36 is preferably positioned back of the indicator casing 37 and has a partition 38 provided therein, as shown in Figure 5, dividing the interior of the box into two chambers, one of which may be" termed a water supply chamber 39, and the other a waste chamber 41. A pipe 42 leads from the lower portion of the supply chamber 39, and has a nozzle 43' secured to the opposite end thereof which is disposed over the stock at the point where it is dischar ed from the chamber 23 over the dam 24. ee Figure 1.) A waste pipe 44 is connected to the chamber 41.

A feature of the invention resides in means for automatically controlling the supply of additional water to the stock in the event that it becomes too thick. A discharge nozzle 45 is movably mounted within the control box 36 and normally has its end positioned above the partition 38. This partition, it will be noted, by reference to Figure 5, is preferably provided with a knife edge 46 to divide the stream of water discharged from the nozzle 45 between the two chambers, or to direct it all into either chamber. The nozzle 45 is preferably secured to a relatively larger pipe 47 pivotally connected to a water supply pipe 48 by a pin 49. The pipe connection 47 is preferably larger than the water supply pipe 48, so that the end of the supply pipe 48 may be inserted therein, as shown in Figure 5. By thus supporting the pipe connection 47 and nozzle 45, the latter may be oscillated within the box 36, from one chamber to the other. The position of the nozzle 45 with respect to the partition 38 will regulate the flow of water through the pipes 42 and 44.

A forkedcrank arm 51 is terminally secured to the indicator shaft 29 within the box 36, and engages the nozzle 45, as shown in Figures 4 and 5. Thus when the indicator shaft 29.is partially rotated by movement of the indicator 28, as a result of its connection with the member 25, the position of the nozzle 45 with respect to the edge 46 of the partition 38, will automatically be varied depending upon the consistency of thestock passing through the chamber 23.

The member 25 is preferably hollow and is of such size and weight that when the stock is of the proper consistency the indicator 28 will register with the mark 35 provided upon the face plate 34. When the indicator 28 is thus positioned, the water supply nozzle 45 will be disposed over the waste water chamber 41 so that substantially all the water therefrom will be discharged through the pipe 44. If the stock begins to thicken beyond a predetermined degree, the member 25 will be actuated by the stock impinging thereagainst, thereby elevating the depending end thereof with the resultant actuation of the indicator 28 and the nozzle 45. Such actuation of the water supply nozzle 45 by the rising of the member 25 in the stock will cause the discharge end thereof to move towards the water supply chamber 39, thereby causing a portion of the water to flow through the supply pipe 42 and through the nozzle 43 into the moving stock. a

The discharge end of the nozzle 43 is preferably elongated so that the stream of water discharged therefrom into the stock will be sheet like in form. It will also be noted by reference to Figure 6 that the discharge opening in the nozzle 45 is similarly elongated in form, and, that it is arranged at an angle with respect to the knife edge 46 of the partition 38. The purpose of thus angularly arranging the discharge end of the nozzle 45 with respect to the partition 38, is to obtain better regulation of the water. As a result of the elongated opening, the increase in the water supply to the chamber 39 will be gradual, and will be proportionate to the movement of the nozzle as it is moved back and forth over the partition by the action of the member 25, the movement of which is controlled entirely by the consistency or density of the moving stock flowing through the chamber 23.

From the chamber 23 the stock will overfiow the dam 24 and enter a mixing chamber 50, preferably upright in form, and having a series of bafile plates 52, 53 and 54 arranged in staggered relation therein, so as to cause the stock to follow a tortuous path, as it flows by gravity therethrough. Inclined walls 55 are provided between the bafile plates 52 and 53 to cause the stock to be movedinwardly towards the center of the mixing chamber thereby to obtain a better and more uniform mixin thereof.

From the chamber 50 t 1e stock, after having been supplied with additional water, if necessary, is precipitated into a chamber 56, having a dam 57 at the discharge end there of, over which the stock'will flow into a receiving pipe 58 (see Figure 1). A member 59 is disposed within this chamber, adapted to be actuated by the passage of stock-therethrough. This member is similarly supported by means-of a cross shaft 61, having a crank arm 62 terminally secured thereto, and having a rod 63 connecting it with an arm 64 loosely mounted upon the indicator shaft 29, as shown in Figures 4 and 7. An indicator arm 65, preferably integral with the arm 64, and offset as' shown in Figure 4, passes through a slot -66"in the face plate 34 of the indicator casing. The terminal of this indicator arm is adapted to register with a mark 67 upon theface of the plate 34, as shown in Figuresl and '7. This mark'67 is preferably arranged in vertical alinement with the indicator shaft 29, as shown in Figure 7. The purpose of this indicator is to indicate the consistency of the stock passing through the chamber 56. The member 59 is so adjusted and connected with the indicator arm 65, that when the stock is of the proper consistency, the indicator arm will register with the mark 67. This indicator, therefore, functions to indicate the consistency of the stock before it is delivered to the receiving pipe 58.

When the apparatus is operating under normal conditions, the indicator arm 28 will be actuated very slightly, the member 25 and its connection with the watersupply nozzle 45 being adjusted and arranged to supply the necessary quantity of water to the stock to reduce it to the consistency required for the paper making machines. The apparatus, therefore, automatically functions to regulate the consistency of the stock discharged therefrom into the pipe 58, regardless of its consistency when delivered to the apparatus through the supply pipe 12.

Inclined rods or members 68 are preferably arranged in the chambers 23 and 56, at the receiving ends thereof, as shown in Figure 1. These inclined rods or members are preferably disposed in alinementwith the members 25 and 59, as shown in Figure 2, and function to divide the stream of stock through the chambers, thereby causing the members to respond more readily to the impinging action of the stock thereagainst, during the operation of the apparatus. The water supply pipe may be suitably supported by means of a bracket 69 secured to an upright bar 71, having its lower portion secured to the rear wall 27 of the upper chamber 23, as shown in Figure 2. The water control box 36 is also preferably supported upon the upright bar 71, as shown in the same figure.

I claim as my invention:

1.' In a device of the class described, the combination with a suitable chamber, means for causing a flow of paper stock through said chamber, means for maintainin the stock at a constant level in said chamber, a member movably arranged within said chamber in contact with the flowing stock, whereby the position of said member is varied by changes in the consistency of the stock, means for supplying water to said stock after it passes the movable member, means, controlled by said movable member, for regulating the amount of water supplied to said stock and a discharge passage into which the stock that passes from said chamber is conducted, substantially as described.

2. A'device of the class described, comprising in combination, a chamber, means for causing a flow of paper stock through said chamber, a member movably arranged. within said chamber in contact with the flowing stock whereby the position of said member is varied by changes in the consistency of the stock, means for maintaining the stock ata constant level in said chamber, a nozzle positioned over said chamber for supv plying water to the stock, means controlled by the movement of said member for regulating the amount of water supplied to said stock, means connected with said member for indicating the consistency of the stock passing through said chamber and a discharge passage into which the stock that passes from said chamber is conducted.

3. A. device of the class described, comprising in combination, a chamber having means at one end thereof for delivering paper stock thereto, a dam at the opposite end of said chamber for maintaining the stock at a constant level therein, a member movably mounted within said chamber and in constant contact with the flowing stock whereby the position of said member is varied by the consistency of said stock, a nozzle positioned over the discharge end of said chamber for supplying additional water -to the stock, means controlled by the movement of said member for regulating the amount 01"". water discharged from said nozzlc into said stock and a discharge passage into which the stock that passes from said chamber is conducted.

4. A device of the class described, comprising in combination, a mixing box having means for delivering a flow of paper stock thereto, a chamber communicating with said mixing boX, a dam at the discharge end of said chamber for maintaining the stock at a constant level therein, a member movably mounted within said chamber and in constant contact with the flowing stock whereby the position of said member is varied by changes in the consistency of the stock, a water control device mounted adjacent said chamber and having a nozzle positioned over the discharge end thereof for supplying additional water to the stock, and said member having a connection with said device whereby, when the stock thickens, said member will be operated to actuate said device to supply additional water to the stock, and when it thins, the supply of water thereto will automatically be cut ofi', thereby causing the resultant flow of stock from said chamber to be substantially uniform in conmember movably mounted within said chan1- ber in constant contact with the flowing stock whereby the position of said member is varied by changes in theconsistency of the stock, a water supply device having a discharge nozzle positioned adjacent the discharge end of said chamber, said device having a connection with said member eeaare whereby, when the stock thickens, said member will operate said device to deliver additional water to said stock through said nozzle, and when the supply of stock to said chamber becomes thinner, said member will operate to cut ofi? the supply of water thereto, and means for indicating the consistency of the-stock after having passed through said chamber and a discharge conduit in which the stock that passes from said chamher is received for passage to the paper machine.

6. The combination with a device of the class described, including a chamber having means for causing aflow of paper stock therethrough, means for maintaining the stock in said chamber at a constant level, of a member movably mounted; within said chamber and responsive to changes in the consistency of the flowing stock, a water supply device having a discharge nozzle positioned adjacent the discharge end of said chamber, said device comprising a casing having a partition disposed therein and dividing it into two compartments, a water supply pipe movably mounted within said casing over said partition, and said supply pipe having a connection with said member whereby, when the member is actuated by changes in the consistency of the stock, said supply pipe will be operated within said casing to deliver additional water to said stock when it becomes too thick, and to cut ofl the supply of water thereto when the stock delivered to said chamber reaches a predetermined degree of thinness and a discharge conduit for receiving and conducting to the paper machine the stock thatpasses through said chamber.

7. In a stock consistency regulator for paper machines, a chamber for passage of stock on its way to a paper machine, means for conducting paper stock to said chamber, means for maintaining the stock in said chamber at a constant level, a member suspended in the flowing stock in said chamber and actuable by the consistency of the stock, an indicator operatively connected with said member for indicating the consistency of the stock in said chamber, said member bein also connected with a water supply contro arranged to supply water to the stock after it passes from said chamber and a discharge conduit for receiving and conducting to the paper machine the stock that passes through said chamber.

8. In a stock consistency regulator for paper machines, a plurality of chambers and a conduit connecting the discharge of the first chamber with the inlet of the second chamber, means for maintaining the stock in each chamber at a constant level therein, means arranged in each chamber and in contact with the flowing stock therein for indicating the consistency of the stock in such chamber and means actuated by the member in the first chamber for controlling the discharge of waterrinto the stock during its passage from the first to the second chamber.

9. In a stock consistency regulator for paper machines, a plurality of chambers and 21 conduit connecting the discharge of the first chamber to the inlet of the second chamber,

said conduit being provided with means for mixing the stock as it passes therethrough and each of said chambers being provided withmeans for maintaining the stock at .a

constant level in said chamber, means for.

the flowing stock therein for indicating the consistency of the stock in such chamber and means actuated by themember in the first chamber for controllin the discharge of water into the stock during its passage from the first to the second chamber.

10. Means for supplyin stock to a paper makin machine and regu ating the consistenc t ereof comprising a container through which the stock I asses only once in the normal operation 0 the device said container including a chamber with mechanism the movements of which are broadly controlled b the consistency of the stock, a water supp y controlled by said mechanism, said water supply emptying into the stock only after the stock has finally passed through the chamber whereby the consistency of the stock is only indicated before the water supply isv added thereto.

11. Means for supplying, regulating and indicatingthe consistency of stock supplied to a paper making machine comprising a container through which the stock passes, mechanism moved in accordance with the consistency of the stock, a water supply controlled by said mechanism said water supply communicating with the stock after it as finally passed said mechanism, and a second mechanism moved by the stock after the water has beenintroduced into the stock for indicating whether or not the stock is of proper consistency afterthe water has been introduced therein.

12. Means for regulating the consistency of stock as it passes to a paper making machine comprislng a container through which the stock passes, a water supply for the stock, mechanism controlled by the consistency of the stock for regulating the water sup lied to the stock, an indicator for visibly in icating the consistency of the stock controlled by said mechanism, a second mechanism for indicating ,the consistenc of the stock after the water supply has een introduced into the stock, and a visible indicator operated by said second mechanism.

In witness whereof, I have hereunto set my hand this 2nd day of August, 1926.

MATHIAS DE ZURIK.

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