FI51229C - ANORDNING FOER TILLFOERSEL AV MAELD I EN PAPPERSMASKIN - Google Patents

Description

ΓβΙ (11 ^ ANNOUNCEMENT] EXTENSION Γ4ΛΛΛ

1 UTLÄGG NINGSSKRI FT

(45) '(51) Kv.lk.3 / lnt.CI.J D 21 F 1/02 ENGLISH! - FINLAND (21) Patent application - Patencansökning 977/68 (22) Application date - Ansökningsdag 09.04 · 68 (SF) '' (23) Starting date - Giltighetsdag 09 »04. 68 (41) Made public - Biivit offentlig 18.07.69

Patent and Registration Office .... ....... .... . . .....

(44) Date of publication and date of publication—

Patent and Registration Office Ansökan utlagd och uti.skriftan pirblicerad 02.08.76 (32) (33) (31) Privilege claimed — Begärd priority 17.01.68 USA (US) 698633 (71) Beloit Corporation, Beloit, Wisconsin 53511, iJSA (US) ) (72) Lester Mason Hill, 2255 Prairie Rd., Beloit, Wisconsin, Richard Earl Hergert, 512 Bridge St., Rock ton, Illinois, Joseph Bixon Parker, R No. 1, South Gate Rd., Roscoe, Illinois, USA (74) SA Munsterhielm (54) This invention relates generally to a headbox of a paper machine, and more particularly to a headbox structure having a nozzle chamber having a nozzle chamber a plurality of channels formed of downstream members of the pulp for uniformly directing the pulp toward a nozzle opening at the downstream end of said nozzle chamber. A specific definition of the subject matter of the invention is set out in the appended claim 1.

In the flat wire process of papermaking, in order to achieve uniform paper web formation, the main difficulty is the natural tendency of the fibers to flocculate. An important part of all flat wire machines is a device for dispersing the fibers during web formation. Today, dispersion of fibers is accomplished by developing turbulence, in the broadest sense of the word, in the fiber mandrel, and in the stern, often using perforated rolls and wire planes as a result of the free surface reaction of the pulp to varying acceleration as it passes over the rollers and vanes. The dispersing effect which occurs at the wire plane is an important addition to the turbulence developed in the headbox, and as a rule, the flow of water at the wire plane is deliberately slowed down to achieve a uniform formation of the pulp 2,51229 on the wire. In contrast, a flat wire in which the register rolls have been replaced by a suction box has a relatively much faster removal of water from the pulp and a much smaller effect on the pulp on the wire. It follows that the formation (bottom) of a web formed by flat wire machines with a suction box is much more sensitive to the discharge characteristics of a headbox than the formation of a conventionally formed web.

A basic limitation in headbox design has been that the devices with which turbulence has been developed in the fiber brackets to disperse them have been only relatively large devices. With such devices, it is possible to develop small-scale turbulence by increasing the intensity of the generated turbulence. Thus, the energy of turbulence is inherently transferred from large to small vortices, and the higher the intensity, the higher the rate of energy transfer and, consequently, the ever smaller extent of the maintained turbulence. However, this high intensity turbulence also has a detrimental effect, namely, large waves and free surface disturbances developing on the flat wire table. Thus, as a general rule in headbox operation, it has been that the degree of dispersion and the level of turbulence in the headbox outlet jet are closely related; the higher the turbulence the better the dispersion.

Thus, when selecting a headbox structure with this constraint, extreme shapes could be chosen, either a structure that provides a very turbulent well-dispersed discharge jet or a structure that provides a low turbulent poorly dispersed discharge jet. Because both very high turbulence or very low turbulence (and consequent poor dispersion) cause deficiencies in web formation (bottom) on a flat wire machine, the problem with headbox design has been to make a suitable compromise between these two extremes. That is, the primary goal in headbox design to date has been to provide a level of turbulence that is high enough for dispersion but low enough to avoid free surface defects during the forming cycle. It is clear that the best compromise is a different level of turbulence for different types of papermaking compositions, consistencies, wire level structures, running speeds, etc.

Thus, a universal headbox structure is difficult or even impossible to achieve with the equipment and technology currently available. In addition, since these trade-offs always have to give up the best possible dispersion and / or the best possible flow background on a flat wire, it can be stated that there is a lot of room for improvement in the headbox structure today.

Deficiencies in sheet formation due to these extremes in the headbox structure, i. inherently high or inherently low turbulence, come out even more when using a flat wire machine in which all the register rollers and vanes have been replaced by suction boxes. In this case, when the turbulence is very low, such as in the discharge jet of a conventional perforated blade type headbox, the formation (bottom) of the web formed by the rapid draining of the suction boxes without the effect of the register rollers directly reflects the poor dispersion of the exhaust jet. On the other hand, when the turbulence is very high, a wave pattern develops in the free surface of the mass flowing on the wire as a result of the turbulence. If the water is removed quickly in this case, the web formation reflects the mass distribution pattern of these waves „Apart from the free surface wave patterns, excessive turbulence can also entrain air and break the thickened non-fibrous previously deposited and cause formation (bottom) errors.

Thus, not only are the current extremes of headbox properties inappropriate, it is also difficult to find a suitable compromise. applicable to a flat wire machine with a suction box.

Thanks to the unique and novel combination of parts according to the present invention, the pulp can be delivered to the forming surface of the paper machine so that the discharge jet has a high level of fiber dispersion and a low level of turbulence. Under these conditions, a fine-scale dispersion of fibers develops which does not deteriorate as the turbulence dampens; at least it does not deteriorate to the extent that in the vortex dispersions that develop in conventional headbox structures.

It has been found that it is the absence of large-scale turbulence that prevents the fibers from coarsely re-flocculating, because flocculation is mainly the result of the loss of small-scale turbulence and large-scale persistence. The retention of the dispersion in the flow on the flat wire, on the other hand, directly leads to an improvement in the formation (bottom).

The method by which the above is accomplished, i. developing small-scale turbulence without large-scale turbulence is that the fiber stock is passed through a system of parallel channels in which the channels are uniform in size and small, but with a large proportion of open cross-sectional area. Both of these conditions, if 51229, namely a uniform small channel size and a large proportion of the open area of the outlet are necessary. Thus, the magnitude of the maximum turbulence developed in the channel flow is the same as the depth of the private channels, and keeping the depth of the private channels small makes the scale of the turbulence small. It is necessary that the proportion of the open cross-sectional area of the outlet be large in order to prevent the development of large-scale turbulence in the outlet belt socket. That is, large enclosed areas between the outlets of the channels would cause great turbulence in the floodplain of these areas.

The flow channels must therefore, in principle, change in size from a large inlet to a small outlet. This change must take place over a considerable distance so that the large coarse flow disturbances which have arisen in the wake of the inlet structure have time to be reduced to the desired small turbulence.

The walls delimiting the channels immediately after the inlet structure must be sufficiently rigid to be able to withstand the deformation and ripple caused by said rough flow disturbances and the resulting dynamic pressure fluctuations. For this reason, it is important that the inlet has a reasonably large open cross-sectional area so that unreasonably large pressure fluctuations on the downstream side are avoided. Therefore, what hienctnm axi coarse turbulence in the flow channel becomes the less rigid the channel walls need to be to warp to withstand. A simple way to provide rigidity is to increase the wall thickness of the duct, and this is the design method now used as explained in detail below. Thus, since it is desirable for the channel walls to gradually change from rigid thick members at the upstream end of the channel to thin members at the downstream end, the flow control structure should be gradually tapering channels bounded by walls that simultaneously slowly taper and gradually become less rigid. Thus, the simultaneous convergence of the channel size and the channels delimiting the channels complement each other's effect. As the depth of the channel decreases, the pressure fluctuations become smaller and thus lower in intensity, which makes it possible to use thinner walls to restrict the channels. Due to the decreasing wall thickness, the surface area between the channels approaches the small dimension it must have at the outlet end. This principle of simultaneous convergence is considered important in the structure of the present invention. In addition to being thin at the downstream end of the channel, they may also be, and preferably are, flexible for the following reasons: 1) flexibility allows traction members to apply to hydrodynamically stable positions, implying even distances, and 2) flexibility where the cross-sectional area of the channels is small, allows free passage for large fiber bundles and foreign pieces.

Accordingly, it is an important object of the present invention to provide a pulp supply system in the form of a headbox for feeding pulp to the forming surface of a paper machine in such a state that the dispersion is as good as possible with the lowest possible turbulence in the discharge jet.

Another object of the present invention is to provide a headbox for a paper machine which develops a fine dispersion of fibers which does not deteriorate excessively with reduced attenuation.

Other objects, advantages and features of the invention will become apparent from the foregoing description and, more particularly, as this specification progresses in connection with the accompanying drawings, in which:

Fig. 1 is a vertical sectional view showing a headbox structure used in the practice of the present invention;

Fig. 2 is a vertical sectional view showing another embodiment of a headbox structure used in accordance with the present invention;

Fig. 3 is a cross-sectional view taken along line III-III in Fig. 2

down to,

Fig. * + Is a cross-sectional view taken along line III-III of Fig. 2, and shows a modification of the present invention,

Fig. 5 is a cross-sectional view taken along line III-III of Fig. 2 showing another modification of the present invention;

Figure 6 is an enlarged elevational view of an essential member of the embodiments shown in Figures 1 and 2;

Fig. 7 is a cross-sectional view taken along line VII-VII of Fig. 6; Fig. 8 is a cross-sectional view taken along line VII-VII of Fig. 6 and showing another form of member shown in Fig. 6;

Fig. 9 is a plan view of the member shown in Fig. 6,

Fig. 10 is a plan view showing the member of Fig. 6 in a slightly different view,

Fig. 11 is a vertical sectional view showing still another embodiment of a headbox structure 6 51229 used in accordance with the present invention;

Fig. 12 is a cross-sectional view taken along line XI-XI in Fig. 11,

Fig. 13 is a cross-sectional view taken along line XII-XII of Fig. 11,

Fig. Ib- is an axonometric view of an essential member of the structure of Fig. 11,

Figure 15 is a vertical sectional view of a different embodiment of the present invention, and

Fig. 16 is a perspective view of an essential member of the structure of Fig. 15.

In the following review of the drawings, the word transverse means the transverse direction of the paper machine and the longitudinal so-called machine direction.

Figure 1 shows a forming wire F running around the breast roll 10 to form a conventional forming surface to which the pulp is fed generally through a nozzle opening indicated by the reference numeral S.

The nozzle S is attached to the front end of a headbox, generally indicated by reference numeral 11, which headbox forms a nozzle chamber 11a and a flow chamber 11b upstream of the nozzle, which directs the pulp, to flow towards the nozzle 3.

In a conventional pulp feeder, the pulp is generally fed to a headbox as used here, from a pulp pump or other suitable pulp source down a small high-speed line, denoted in Figure 1 by reference numeral 12 as a converging transverse manifold with and an outlet 12b having a smaller cross-sectional area at the rear of the chamber 12, so that the mass flows in a generally transverse direction down the inlet manifold 12. Any of a number of known pulp feeders can be used to provide a transverse mass flow into the chamber 12 so that the pressure is substantially uniform over the superficial area of the barrier plate, i.e. the routed mounting plate 13. The routed plate 13 is transverse to the pulp inlet line 12 and has a plurality of holes 13a, 13'o, 13c, etc. that are planarly parallel and spaced transversely to form a plurality of generally parallel holes extending over the entire area of the plate 13. The plate 13 supports a plurality of diffuser nozzles 1b-a, 1b-b, 1bc, etc., each of which is fitted in one of the holes 7 51229 13a, 13b, 13c in the plate 13. At their downstream end, the diffuser nozzles communicate with the flow chamber lib upstream of the nozzle. The chamber 11b is limited in the direction of mass flow by the downstream ends of the diffuser nozzles l * + a, l ^ b, l ^ c · - - - etc. and a perforated plate 15 extending transversely across the headbox 11.

The plate 15 has a number of holes 15a, 15b, 15c, etc. divided between the closed areas 16a, 16b, 16c, etc.

The holes 15a, 15b, 15c, etc. are generally horizontal so that continuous intact areas 16a, 16b, 16c, etc. remain between the rows.

Slabs 19, 20, 21, etc. penetrate intact areas. These plates extend transversely across the nozzle chamber 11a and longitudinally towards the nozzle S. It should also be noted that the plates 19, 20, 21, etc. also extend longitudinally through the plate upstream and to their upstream ends. is attached to the transverse rods 22, 23, 2b, etc. This unique and new holes 15a, 15b, 15c, etc., intact areas 16a, 16b, 16c, etc., plates 19, 20, 21, etc. extending upstream of the perforated plate 15. and the combination of rods 22, 23, 2b, etc., makes it possible to significantly increase the open area of the routed plate 15, the advantage of which will be explained in detail below.

As the open area of the tiles 15 increases, the area of the intact areas between the holes decreases substantially. These narrow intact areas tend to collect fibers, the accumulation of which gradually increases and may result in large bundles of fibers detaching into the nozzle chamber 11a, causing the papermaking process to be interrupted. In order to prevent the fibers from accumulating in the intact areas, the plates 19, 20, 21, etc. have been extended upstream of the intact areas. To prevent the accumulation of fibers, rods 22, 23, 2b, etc. are attached to the upstream ends of the tiles. The rods are large enough in diameter to prevent the fibers from adhering to them. The rods can, of course, be of various shapes, such as flat, blunt or Pisa-shaped.

As can be seen from the drawing, the cross-sectional area of the nozzle chamber 11a gradually decreases in the flow direction towards the nozzle opening S, and is limited by the longitudinally routed plate 15 and the nozzle opening S. The plates or drag members 25, 26, 27, etc. extend from the plate 15 to the nozzle opening S and divide the nozzle chamber into several approximately vertical lengths. as channels 29, 30 31, etc. The channels also extend across the nozzle chamber 11a. The tow members are anchored 8 51229 only at their upstream ends to the routed plate 15 and are free-floating on the downstream side. It is therefore desirable for the towing members to be relatively close to neutral in terms of their buoyancy, so that they can settle according to the hydrodynamic effects of the mass flow between the towing members. It has also been found advantageous for the towing members to change from rigid thick members at the upstream end to thin members at the downstream end. To achieve this, the drag members delimiting the tapered channels are, as can be seen in the drawing, at the same time slowly tapering in thickness.

In a practical embodiment of the present invention, the distance C of the various channels between the drag members before the nozzle opening S should be of the order of 1/8 inch or less, and the fixed areas between the channels at the end of the channels should be much smaller than the channels themselves. Therefore, the open area at the outlet end should preferably be in the order of at least $ 80-95. However, one can also think of open areas of the order of $ 50 and larger. To prevent clogging of the inlet end of the nozzle chamber, the vertical dimension of each channel 29, 30, 31, etc. at the upstream end should be in the order of one inch, and the open area of the perforated plate 15 should preferably be at least $ 30. As a general rule, however, the openings in the manifold should be as small as possible to keep the flow pattern small, but large enough to prevent clogging. These criteria vary depending on the application and the properties of the pulp.

It has further been found advantageous to provide some flexibility to the downstream ends of the tow members 25, 26, 27, etc. This orifice provides a convenient means of obtaining small uniform distances between members over the entire width of the nozzle chamber at the downstream end, since this uniform distribution is a hydrodynamically stable state with this particular structure as shown by experiments.

Thus, the flexibility allows dynamic flow forces to place the towing members in place; i.e. the organs adapt to the flow lines. Alternatively, it would be difficult to obtain evenly distributed rigid towing members without attaching them to the sides of the nozzle chamber, and even then it would be difficult.

Flexible towing members are also advantageous in that large particles, which inevitably occur in an industrial mass flow system, pass through. Thus, the present invention is characterized in that the traction members are not attached to the sides of the nozzle chamber 9,51229, as this simplifies the structure and avoids narrow rigid channels that would be prone to clogging by fibers and foreign matter.

In operation, the pulp is fed to a tapered inlet pipe 12 through an inlet 12a. A portion of the pulp enters the nozzles 13a, 13b, 13c, etc., while the remainder exits the tapered inlet tube 12 through the recycle port 12b. From the nozzles 13a, 13b, 13c, etc., the pulp passes to the diffusers 1α, 1J + b, 1Mc, etc., by means of which the pulp is evenly distributed over the entire width of the chamber 11b preceding the nozzle. The distribution of the mass over the width of the chamber preceding the nozzle is rough in nature, so that the extent of turbulence or variations in it is of the order of a few inches. The coarsely divided mass is then forced through the holes in the plate 15, as a result of which the extent of turbulence is somewhat reduced, but remains well above the level desirable for web formation. The mass is then directed to channels 29, 30, 31, etc. in a state of relatively coarse and intense turbulence. The upstream ends of the towing members are supported by the plate 15 and are strong enough to compensate for the relatively large scale and intensity of the turbulence of the mass. As the mass travels along channels whose cross section gradually decreases, the intensity and extent of turbulence decrease as well. At the downstream end near the nozzle section S, the channels are narrow and bounded by flexible walls. At this end, the extent of turbulence has decreased to an acceptable level for papermaking. This reduction in turbulence is achieved by reducing the channel size, although still coarse particles can pass through due to the flexibility of the traction members restricting the channels. The turbulence of the pulp in the channels thus continuously decreases from a coarse intense state to a small extent and low intensity. The thickness and stiffness of the channel walls gradually change accordingly. The extent of the final turbulence in the channel output comparison is determined by the size of the channels near the downstream end, and its intensity is determined by the flow rate through the channels, which in turn is determined by the number of channels. In this way, the extent and intensity of the turbulence of the discharge current can be independently controlled.

Figures 2-12 show further details and other forms of the present invention.

The somewhat simpler headbox MD according to Figure 2 comprises a tapered inlet manifold ML with an inlet k-2 and an overflow opening * + 3. The front wall of the manifold M3 is formed by a routed plate 44 having a plurality of holes 45, 46, etc. These holes are preferably nozzle-shaped and have an open connection from the inlet manifold to the nozzle chamber, generally indicated at 47. The nozzle chamber 47 has a top wall 48 and a bottom wall 4- 9, which converge in the longitudinal or machine direction and terminate in the nozzle part S2. The front and rear of the nozzle chamber have appropriate transverse sidewalls. Inside the nozzle chamber 4-7, there are a plurality of longitudinally drag members 50, 51, 52, etc. The other end of each tow member is attached to a perforated plate at the upstream end of the 4-4 nozzle chamber 47. The tow members extend approximately the entire length of the nozzle chamber and are not attached to any part of the chamber other than the routed plate 4-4.

The towing members are thus allowed to float freely inside the nozzle chamber, except for the plate 4-4- perforated at the point of attachment, where they remain in place. As the pulp flows through the nozzle chamber, the drag members form a series of longitudinally flexible channels through which the pulp flows, thereby gradually reducing the large-scale turbulence in the pulp while maintaining a high level of fiber dispersion. The pulp thus conditioned exits the nozzle opening S2 and is deposited on a flat wire 53 or any other suitable web-forming surface. The flat wire 53 is supported immediately below the nozzle by a roll 54, commonly referred to as a breast roll.

As shown in Figures 3-10, the towing members may have different shapes, each of which can be easily adapted to suit specific operating conditions. For example, as will be readily appreciated by those skilled in the art, it may be most convenient for the flexible members 50, 51, 52, etc. to extend across the nozzle chamber in the form of full-width plates as described in Figure 1, in which case the transverse dimension of the flow chamber preceding the nozzle is relatively narrow. On the other hand, it is obvious that in extremely wide headboxes it may be more convenient to use several relatively narrow plates in the transverse direction of the nozzle chamber. Accordingly, Figure 4 shows flexible towing members extending across the entire nozzle chamber so that the transverse dimension of the flexible members is approximately the same as that of the nozzle chamber.

As shown in Fig. 5, the transverse dimension of the private drag members 60, 6l, 62, etc. is reduced to a fraction of the transverse dimension of the flow chamber upstream of the nozzle, which may be a more convenient way for trailing boxes with a relatively large transverse dimension.

Figure 3 shows another embodiment of the present invention, and shows that the towing members here consist of a plurality of flexible rods or wires 63, 61 · », 65, etc. with a generally circular cross-section. This embodiment is particularly useful when, due to the properties of the pulp, it is necessary to use channels with an extremely small cross-sectional area.

As shown in Fig. 6, the longitudinal section of the drag members 50, 51, 52, etc. is preferably made such that their cross-sectional area decreases in the longitudinal direction in the flow direction. The decrease in cross-sectional area is proportional to the decrease in cross-sectional area of the nozzle chamber 11a, Fig. 1 and V7 in Fig. 2. In this way, the complementary effects of the simultaneous size of the canal and the flexible members are achieved. In the embodiment of Figure 6, the transverse cross-section remains substantially rectangular as shown in Figure 7.

Fig. 8 shows a cross-sectional shape of the drag members 50, 51, 52, etc. of Fig. 3, and although this cross-sectional shape is generally shown as a circle, it should be noted that this cross-section may be other shapes, e.g. hexagonal, elliptical or triangular, depending on the methods used. a flexible substance is prepared. The drag members of Figures 3 and 8 may also decrease in the longitudinal direction of flow as shown in Figure 6. Figures 9 and 10 are plan views of the flexible members 50, 51, 52, etc., and it is observed that the member 50 may be uniformly width as shown in Figure 9 or, alternatively, its width may gradually decrease in the longitudinal direction as in Figure 10.

Fig. 11 shows another embodiment of the present invention, and it can be seen that the tow members 71, 72, 73, etc. are given a somewhat modified shape in that the upstream ends of the tow members are relatively rigid plates with flexible tow members 7 * +, 75, 76, etc. Figure 12 shows the plates 71, 72, 73, etc. in cross section and shows that they extend approximately the entire width of the nozzle chamber. Fig. 13 shows the drag members 7, 75, 76, etc. in cross section and shows their approximate position relative to the nozzle chamber, it being noted that the actual number of these drag members in the industrial structure would be considerably higher depending of course on the respective pulp properties. Figure 1k is a perspective view of a combination of plates 71 and flexible members 75. Relatively rigid

Claims (28)

The plates 5 51229 71 may be made of plastic or sheet metal and may have a substantially constant or gradually decreasing cross-sectional area in the flow direction. The flexible drag members 7 are preferably made in the form of tapered flexible rods, but may also be in the form of single diameter filaments of constant diameter. Fig. 15 shows another embodiment of the present invention, according to which the perforated plate 55 is somewhat modified in shape so that the holes are extended in the flow direction by a short pipe section 56 which pierces and extends past the perforated plate 55. As shown in detail in Fig. 16, a plurality of flexible drag members 57 are attached to each tube 56 at its downstream end. The members 57 are flexible wires, one end of which is suitably attached to the downstream end of the tube 56. The material used for the towing members may be metal or non-metal such as plastic, rubber, epoxy resin, etc. Thus, it can be seen that an improved headbox has been provided which achieves the above objects and advantages and avoids the disadvantages associated with prior art. headboxes. The claims; An apparatus for delivering pulp to a paper machine, comprising a headbox nozzle chamber (11a, b7) having a progressively decreasing cross-section in the flow direction and having one or more "flow-elongating flow transducers" arranged transversely between the top wall (^ 8) and the bottom wall (U-9). control members, characterized in that the control or towing member or members (25, 26, 27, 50, 71, 76) are arranged in one or more horizontal planes and have such physical properties and are thus fixed upstream of the nozzle chamber (11a, k-7); to the part on the side only from its upstream ends with the downstream ends free, that it is possible for the control or drag members to apply in hydrodynamically correct positions with respect to the forces applied to them by the mass flowing towards the nozzle opening (S). Device according to claim 1, characterized in that the elongate, independent drag members (25, 26, 27) delimit a plurality of converging channels (28, 29, 30, 31) which are generally parallel to the mass flow. Device according to claim 1, characterized in that the width of the drag members (25-27, 50, 71-73) substantially corresponds to the width of the nozzle chamber (11a, b7) (Figs. H and 12). Device according to Claim 1, characterized in that the cross-sectional area of the towing elements (25-27, 50) continuously decreases in the direction of the mass flow. Device according to Claim 1, characterized in that the cross-sectional area of the towing members (71-73) decreases discontinuously or stepwise in the direction of the mass flow. Device according to one or more of Claims 1 to 5, characterized in that the elongate member or elongate, independent members (25, 26, 27) consist of one or more plates or plates (51) which extend into the nozzle chamber (11a). k-7) in the transverse direction. Device according to one or more of Claims 1 to 5, characterized in that the elongate, independent members (25, 26, 27) are arranged on one or more strips (60, 61, 62) or rods (63, 61 *, 65). ) to form each row or rows extending in the transverse direction of the nozzle chamber (11a, k-7). Device according to Claim 7, characterized in that the elongate, independent members (25, 26, 27) are ribs (60, 61, 62) having a substantially rectangular cross-section. Device according to Claim 7, characterized in that the elongate, independent members (25, 26, 27) are rods (63, 6 * f, 65) having a substantially circular cross-section. Device according to claim 7, characterized in that the elongate, independent members (25, 26, 27) are rods with a substantially triangular cross-section. Device according to claim 1 or 2, characterized in that the elongate, independent members (25, 26, 27) comprise upstream rigid parts (71, 72, 73) and downstream flexible parts ( 7 * +, 75? 76) attached to the downstream ends of the rigid parts (71, 72, 73). Device according to Claim 11, characterized in that the rigid parts (71, 72, 73) have a substantially circular cross-section. Device according to Claim 11, characterized by 1b 51229, characterized in that the rigid parts (71, 72, 73) have a substantially rectangular cross-section. l * h. Device according to Claim 11, characterized in that the rigid parts (71, 72, 73) have a substantially triangular cross-section. Device according to Claim 11, characterized in that the rigid parts (71, 72, 73) are tubular (56). Device according to Claim 11, characterized in that the flexible parts (7b, 75 to 76) are separate wires (57). Device according to Claim 1, characterized in that the elongate members (25-27, 50 »56, 57» 71-73) and in particular their lower parts (57 »71-73) float approximately freely in the mass flow. Device according to one of the preceding claims, characterized in that a plurality of rigid plates (19-21) pass through the surfaces of the upstream part (15) of the nozzle chamber (11a), which plates have approximately the same width as the nozzle chamber (11a) and in the upstream direction. parts arranged so that the length of the plate in the flow direction is different from that of the adjacent plate, the rod (22-2 * +) being substantially transverse to the nozzle chamber (11a) is attached to the upstream end of each plate (19-21). 1. Arrangement for the use of paper and paperboard in which the air chamber (11a, V?) Is divided into a number of steps and with a stem size (Μ3) and no weight (* + 9) for the purposes of this Regulation, to the extent of the transversal structure, to the constituent species of the field, to the constituent elements of the field or to the organs (25, 26, 27, 50 »71» 76) har anordnats i et eller flera vägräta soon oc you account for your physical health and health and health of your life (11a, ** 7) i hydro-dynamiskt riktiga lägen i för-h4llande account de krafter de utsättas för av den mot munstycksöppningen (S) strömmande emlékden. 2. An arrangement according to claim 1, claim 15 51229, in which a transverse channel (25, 26, 27) can be used to provide a converging channel (28, 29, 30, 3D), in which case a memory device 1 is used. 3 · An arrangement according to claim 1, which can be found in the invention (25-27, 50, 71-73), but also in the form of a chamber (11a, b7) (fig. * + Och 12). D A. nordning enligt patentkravet 1, kännetecknad av, att tvärsnittsarean av släporganen (25-27, 50) avtager kontinuer-ligt i memdströmmens riktning. 5 · An arrangement according to claim 1, which is adapted to include (71-73) a discontinuous or unambiguous condition. 6. An arrangement according to claims 1-5, comprising a transverse organ or a transverse organ, the alternate external organs (25, 26, 27) being used as a transducer or a plator (5D, flick or flicker). breder ut sig i munstyckskammarens (11a, by) tvärriktning. 7 · Arrangement of the face or the face of a patent 1-5, the headings of which are shown in the alternative body (25, 26, 27) and the arrangement of the ribs of the rib (60, 61, 62) or stavar (63, 6 * +, 65), vilken rad eller vilka Rader sträcker sig i munstyckskammarens (11a, b7) tvärriktning. 8. An arrangement according to claim 7, which comprises, according to the invention, an alternative body (25, 26, 27) or a rib (60, 61, 62) with an interesting rectifier. 9. An arrangement according to claim 7, which comprises, according to the invention, an alternative body (25, 26, 27) or a ring (63, 6 *, 65) with an interesting circulator. 10. An arrangement according to claim 7, which comprises, in addition to a transverse structure, an alternative body (25, 26, 27), preferably having a triangular shape. 11. Anordning enligt patentkravet 1 eller 2, kännetecknad av, att längsträckta, avandra oberoende organen (25, 26, 27. omfattar uppströms belägna, styva delar (71, 72, 73) och nedströms belägna, böjliga delar (7b, 75)). »76) in the case of non-domestic animals (71, 72, 73) · 12. An arrangement according to claim 11, which can be used as a circular device (71, 72, 73). 13 · Anordning enligt patentkravet 11, kännetecknad