JPH0325559B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention is mainly used in the cleaning process of paper machine tools, such as endlessly running wires, felts, etc.
The present invention relates to a method for cleaning canvas (hereinafter referred to as wire, etc.), particularly multi-woven wire, and a shower nozzle for cleaning.

[Conventional technology]

As is well known, cleaning of wires, etc. that run in an endless manner communicates with a shower pipe that reciprocates in the width direction of the wire, etc., which is the object to be cleaned, and directly through multiple nozzles arranged in parallel at equal intervals in the axial direction. Spray water in a needle-like manner perpendicularly (at right angles) to the width direction plane of the wire, etc.
Cleaning is carried out by spraying

[Problem to be solved by the invention]

However, in recent years, as paper machines have become larger and papermaking speeds have increased, the materials used for tools such as wire have shifted from conventional bronze to plastic and woven materials due to material development. In paper, it is often used from single-ply weave to double-ply and triple-ply weave, contributing to improving the quality of the product (paper), but the condition is that wires etc. can be cleaned effectively.

In this regard, in conventional cleaning methods, a certain cleaning effect was obtained by using single-woven wire, etc., but when it came to double- or triple-woven wire (hereinafter referred to as multi-woven wire), etc. Due to the lack of cleaning effect, the adhesion of fine fibers, fillers, and chemicals in the paper stock leads to clogging and poor water filtration, which not only stabilizes the product quality but also reduces the service life of the wire itself. There is a practical difficulty in that it cannot be expected to last for a long time. Therefore, in view of the current situation, solutions to the above points have become an urgent issue.

Here, as a result of intensive experimental research in order to solve the above problems, the present inventor has found that in order to solve the above problems, a cleaning method using a shower nozzle that reciprocates in the width direction of a wire, etc. that runs in an endless manner. We have also come to the conclusion that it is essential to configure the cleaning nozzle in a manner and configuration that is completely different from conventional methods in order to solve the problem.

The present invention effectively cleans and removes adhesion of fine fibers, fillers, and chemicals in paper stock, especially multi-woven wire, etc., to completely eliminate clogging of the wire, etc. The purpose of the present invention is to provide an optimal cleaning method for stabilizing product quality and extending the service life of wires, etc. by improving water content, and to provide a cleaning shower nozzle that can be used directly to carry out the method.

[Means for solving problems]

Recognizing the above points, the present invention provides (1) a shower equipped with a constant-velocity sliding device disposed parallel to the width direction plane of the wire, etc., for cleaning endlessly running paper machine wire, etc.; A plurality of nozzles arranged side by side on the pipe at equal intervals are arranged in parallel, and the injection angle of the water injected in a straight line from the injection holes of the disk fixed at the end of the pipe is adjusted to the axis of the nozzle so as to match the weave of the wire, etc.
A method for cleaning paper machine wire, etc., the gist of which is to symmetrically install injection holes having an inclination angle of 4° to 20° and use the water jetted from the injection holes as cleaning water, and the method. invention of a device (cleaning shower nozzle) directly used for carrying out the invention of
This shower nozzle for cleaning uses (1) a plurality of nozzle tips arranged in parallel at equal intervals on a shower pipe equipped with a constant-velocity sliding device with respect to the widthwise plane of the wire, etc. in the cleaning of paper machine wire, etc.; A disk with a tapered side chevron or cone shape is fixedly installed,
Two injection holes are placed in the disk relative to the axis of the nozzle.
The injection hole is symmetrically penetrated at an angle of 4° to 20°, and the injection hole is provided at right angles to the taper of the disk;
and (2) a plurality of elbow-shaped nozzles oriented in the same direction at a certain same angle with respect to the axial direction on both axial sides of the shower pipe with the constant velocity sliding device, and oriented in opposite directions on both sides of the shower pipe. Discs are fixed at the tip of the nozzle at equal intervals, and two injection holes are provided in the discs at an angle of 4° to 4° to the axis of the nozzle. It is formed by penetrating the disk symmetrically at an angle of 20 degrees, and the injection holes are provided at right angles (slanted surface) to the taper of the disk.

In the present invention, the injection holes are formed in a disk having a side chevron-shaped or conical taper fixedly attached to the nozzle tip, and the injection holes are symmetrically arranged at an inclination angle of 4° to 20°, preferably 10° to 15°, with respect to the axis of the nozzle. What was installed was
The jetting angle of the jet water jetted in a straight line from the jetting hole matches the weaving method of the wire, especially the multi-woven wire, and configures them to have a symmetrical angle with respect to the plane of the width direction wire, etc. In addition to cleaning the fine fibers etc. that adhere and accumulate on the back side of the warp threads, the inclination angle is less than 4° within a range that penetrates into the space between the first and second layers and makes cleaning and removal of the deposits effective. In this case, the straight needle-shaped jet of water approaches the nozzle axis and becomes parallel to the nozzle axis, so the water deviates significantly from the range that matches the weave of the wire, etc., and the desired cleaning as described above cannot be performed. Furthermore, if the inclination angle exceeds the upper limit (20°), the straight needle-shaped water jet from the injection hole will come close to the axial direction of the shower pipe, and as above, it will deviate from the range of the pair weave of wire etc. Unsuitable as cleaning effect cannot be obtained.

For this reason, in the present invention, the angle of inclination of the injection hole penetrating through the disk is adopted as described above with respect to the axis of the nozzle, and the present invention has the greatest feature in this point.

In addition, the present invention has the injection hole perpendicular to the tapered surface of the disk whose tip surface is tapered so that the water jetted from the injection hole can be injected at a constant angle (described above) symmetrically with respect to the nozzle axis. Since the water is symmetrically penetrated, the jet water is jetted in a straight line without scattering, and the cleaning effect of the wire etc. is made more effective in combination with the selection of the inclination angle of the jet hole. This was taken into consideration.

[Effect]

The invention works as follows.

A disk having a side chevron-shaped or conical taper is fixed to the tip of a plurality of nozzles that communicate with a shower pipe that reciprocates in the width direction of a wire, etc., and are arranged in parallel at equal intervals in the axial direction, and the disk is fixed to the tip of a plurality of nozzles that are connected to a shower pipe that reciprocates in the width direction of a wire, etc. Since the injection holes having an inclination angle of (See A), and since the injection holes are installed perpendicularly to the tapered surface of the disc having the chevron-shaped or conical taper, the water ejected from the injection holes of the nozzle of the reciprocating shower pipe is scattered. For example, in the case of a multi-woven wire, the fine fibers in the paper stock that adhere and accumulate on the back side of the warp threads can be effectively washed and removed.

That is, when the tip end face of the nozzle is perpendicular to the axis of the nozzle, if the injection hole is inclined at 4° to 20° with respect to the axis, the end face of the injection hole becomes elliptical rather than a perfect circle. In addition, since the peripheral wall surface of the injection hole that is outward from the axis is longer than the peripheral wall surface that is closer to it, the resistance of the water that comes into contact with the outer wall surface increases, causing a change in the water pressure of the ejected water and causing a fountain. The problem is that the particles do not travel in a perfect circle, but instead spread out horizontally in a cat's-eye shape and scatter. Therefore, in this invention, the tip surface of the disk is formed in a tapered shape so as to be orthogonal to the injection hole, so that the tip surface of the injection hole becomes a perfect circle, and the injection water is directed into a perfect circular needle straight shape. can be injected.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

In the figure, a shower pipe (hereinafter referred to as pipe) 1 is located 50 to 150 mm above a wire 7 (described later) running in an endless manner and reciprocates in the width direction of the wire 7 via a drive device (not shown). The nozzle 2 is made of a short pipe with a circular cross section, communicates with the pipe 1, and a plurality of nozzles are arranged in parallel at equal intervals along the axial direction of the pipe 1, and are welded and fixed to the pipe 1 at the protruding base 3.
(See Figure 1). As shown in the second figure, the circular disk 4, which has a diameter equal to the outer diameter of the nozzle 2, has a tip end with a side chevron-shaped or conical taper, and its outer periphery is removably fixed to the pipe 1 via a cap nut 6 ( (see Figure 1). The side chevron-shaped disk 4 has a fixed injection angle (4° to 20°, 15° in this figure) symmetrically with respect to the axis 4' of the nozzle 2.
Two injection holes 5, 5 having the same diameter are provided perpendicularly to the tapered end surface 4A of the chevron-shaped disk (see FIG. 2A). In addition, in the case of a side conical disk, the two injection holes 5, 5 are symmetrical at a constant angle (15 degrees) with respect to the axis 4' of the nozzle 2, similar to the above-mentioned chevron-shaped disk, and the tip tapered surface of the conical disk 4 is symmetrical to the axis 4' of the nozzle 2. 4A at right angles (second
(See Figure B).

Therefore, when the jet water 12 is sprayed in the form of a strong straight needle from the spray holes 5, 5 of the nozzle 2 configured in this manner onto the wire 7, for example, the multi-woven wire 7,
The straight needle-like jet water 12 rushes between the warp yarns 8 and the weft yarns 9 constituting the first and second layers or the first to third layers of the wire and particularly attaches to and accumulates on the back side of the warp yarns 8, which are fine fibers in the paper stock. , contributes to the cleaning and removal of fillers and other chemicals. Moreover, this cleaning effect is further enhanced by the reciprocating movement of the pipe 1. This state is shown in FIG. 3 as an enlarged cross section.

FIG. 4 shows another example showing the same cleaning effect as the present invention, in which the base of the side elbow type nozzle 2 attached with the disk 4 is arranged symmetrically on both sides in the axial direction of the pipe 1 (see FIG. A). As shown in the figure, the extending portion forms a side elbow type nozzle 2 through a cap nut 6, and a plurality of the nozzles are oriented in the same direction at the same angle (see figure B), but the pipe 1 They are arranged in parallel at equal intervals with different orientation directions on both sides. The elbow nozzle 2 can be rotated left and right by adjusting the cap nut 6, contributing to fine adjustment of the pointing direction of the nozzle 2. At the tip of the elbow nozzle 2, a disk 4 having injection holes 5, 5 having the same configuration as the previous example (Figs. 1 to 3) is fixed to the tip of the elbow nozzle 2 in a detachable manner via a cap nut 6'. It is.

The nozzle 2 stands up with its base end facing down,
When the disk 4 is faced forward, the injection holes 5, 5 are configured to be parallel to each other on the left and right.

Therefore, when the powerful straight needle-shaped jet water 12 is jetted from the jet holes 5, 5 of the elbow nozzle 2 having the above-mentioned structure onto the wire, especially the multi-woven wire 7, as in the previous example,
This jet of water is applied to the first and second layers of the wire or to the first layer of the wire.
- Contributes to the cleaning and removal of fine fibers in the paper stock that penetrate between the warp and weft yarns that make up the third layer and adhere to and accumulate on the back of the warp yarns, and has the same effect as the previous example due to the reciprocating movement of the pipe. demonstrate.

Figures 5 through 8 show alternative embodiments of the disk and nozzle shown in Figure 1, in which the same reference numerals are used for structurally similar parts.

In FIG. 5, the nozzle 2 has a thread 2A threaded on the outer periphery of the base end thereof, and is screwed into a plurality of fitting holes 1A provided at equal intervals along the axial direction of the pipe 1. The nozzle 2 is attached to the tip wall 2B of the nozzle 2.
A circular tip hole 2C centered on the axis 4' is formed. In addition, the inner cavity of nozzle 2 has a thread groove 2D.
is engraved.

In the inner cavity of the nozzle 2, a disk 4 is brought into contact with the tip wall 2B via a packing 10, and a presser screw ring 11 is screwed into the screw groove 2D, so that the disk 4 is fixed to the tip wall 2B. has been done.

The entire surface of the disk 4 has a tapered tip surface 4A having a conical cross section.
Four injection holes 5, 5, 5, 5 are installed perpendicularly to A, symmetrically with respect to the axis 4' of the nozzle 2, at a constant injection angle (15 degrees in the drawing) and extending inward. ing.

The retainer screw ring 11 has a circular outer periphery with a threaded groove 11A, and the inner hole 11B is a square through hole as shown in FIG.

In this nozzle 2 having the above configuration, the water entering the inner cavity from the pipe 1 is transferred to the inner hole 11B of the screw ring 11.
The water passes through the jet holes 5, 5, . Similar to the embodiment shown in FIG. 1, this embodiment also has an excellent effect on cleaning wires, etc. In particular, since four injection holes 5 are formed, the cleaning power is higher than that of the two injection holes. Cultivated.

In the embodiment shown in FIG. 7, the nozzle 2 has a thread 2A threaded on the outer periphery of the base end, and the pipe 1
It is screwed into a plurality of fitting holes 1A that are formed at equal intervals along the axial direction. The nozzle 2 is a short tube with a finely formed lumen tip, and a tapered surface 2E is formed at the lumen tip edge. A disk 4 having a tapered surface 4B corresponding to the tapered surface 2E of the nozzle 2 at its proximal end is fitted onto the tip edge of the inner cavity of the nozzle 2 with an adhesive 13 interposed between the tapered surfaces 2E and 4A. equipped.

The tip surface of the disk 4 is aligned with the axis 4' of the nozzle 2.
It is formed into a conical tapered surface 4A centered at , and its inclination angle is 20°. In the disk 4, a plurality of injection ports 5, 5 perpendicular to the tapered tip surface 4A are opened inward at an angle of 20 degrees to the axis 4' of the nozzle 2 and symmetrically to the left and right. There is. Also in this embodiment with the above configuration, the water entering the inner cavity of the nozzle 2 from the pipe 1 is jetted from the injection holes 5, 5 at an angle of 20 degrees with respect to the axis 4' of the nozzle 2, which is excellent for cleaning wires, etc. It can be effective.

In an alternative embodiment shown in FIG. 8, the nozzle 2 is substantially the same as that shown in FIG.

Further, the disk 4 has a tapered surface 4B formed on its outer peripheral surface, which corresponds to the tapered surface 2E of the nozzle 2.
A plurality of injection holes 5, 5, . . . passing through the disk 4 from the front surface to the recess 4C are opened so as to be perpendicular to the front surface and intersect with the axis 4' of the nozzle 2 at an angle of 10 degrees.

Therefore, the tapered surface 4B of the disk 4 and the nozzle 2
A disk 4 is press-fitted into the tapered surface 2E of the inner cavity with a packing 10 interposed therebetween.

In this embodiment with the above configuration, disk 4
is press-fitted from the base end of the nozzle, so the disk will not come off when water is injected from the injection holes 5, 5, . . . under pressure. Furthermore, when the disk needs to be replaced as necessary, the disk 4 can be easily removed by applying force inward from the front surface, making the replacement operation advantageous. Further, since a mountain-shaped recess 4C is formed on the inner surface of the disk 4 as shown in the figure, the water pressure against the injection holes 5 can be equalized.

〔Effect of the invention〕

Since the present invention has the above configuration, when the present invention is operated via a related drive device (not shown), it exhibits the following unique effects.

When the wire running endlessly is, for example, a double woven wire, the nozzles with multiple injection angles are arranged in parallel on the pipe as described above as the pipe is placed above it (50 to 150 mm) and moves back and forth. Washing water from the injection hole forms a straight needle under pressure at a predetermined angle and injects between the first layer (warp) and second layer (weft) of the wire, so that when the paper stock is pasted, it is particularly hard to reach the back side of the warp. Fine fibers, chemicals, fillers, etc. in the paper stock that has adhered and accumulated are washed away, and water filtering resistance due to these deposits is completely eliminated.

Therefore, unlike conventional methods, there is no need to replace the wire at short intervals, and stable operation is possible, and not only is it possible to improve and stabilize product quality, but also to greatly extend the service life of the wire itself. .

The present invention is based on the invention of the present inventor.
It goes without saying that even better effects can be achieved by applying it to the related departments described in Publication No. 61-37395 (sliding device for shower pipes for cleaning wet felts, etc.).

Furthermore, since the present invention has a very simple structure and is suitable for mass production, it can be provided at low cost, and its practical effects in related industrial fields are particularly highly evaluated.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention. Fig. 1 is a cross-sectional view of a nozzle attached to a shower pipe, Fig. 2 is a cross-sectional view of a disk of the nozzle, and Fig. A shows a conical taper at the tip. Figure B shows a disk formed into a chevron-shaped taper. FIG. 3A is a front view of the nozzle showing the state of use of the present invention, and FIG. 3B is a longitudinal side view. Figure 4B
4A shows a front view of the elbow nozzle, and FIG. 4A shows a longitudinal side view. 5 to 8 relate to a nozzle showing another embodiment, FIG. 5 is a vertical front view, FIG. 6 is a view taken in the direction of arrow A in FIG. 5, and FIGS. 7 and 8 are a vertical front view, respectively. It is a diagram. 1...Shower pipe, 2...Nozzle, 2A...male thread, 2B...tip wall, 2C...tip hole, 4...disk, 4A...tip tapered surface, 4'...axis, 5...injection hole, 6, 6'...bag Nut, 7...Wire, 8...Warp,
9... Weft, 10... Packing, 11... Presser screw ring, 12... Straight needle jet water, 13... Adhesive.

Claims (1)

[Scope of Claims] 1. A shower pipe that is arranged parallel to the plane of an endlessly running paper machine wire, felt, canvas, etc., and that slides back and forth in the longitudinal direction of the tube in the width direction of the canvas, etc. In the method of cleaning by arranging a plurality of nozzles at equal intervals, each nozzle is arranged with its axial direction perpendicular to the shower pipe, and the injection hole of each nozzle is arranged at four angles with respect to the axial direction of the nozzle. Two pieces are formed symmetrically in parallel along the longitudinal direction of the shower pipe with an inclination of 20° to 20°,
The tip surface of each nozzle is formed into a tapered surface perpendicular to each injection hole to prevent the jet water from forming into a fan shape, and two straight needle-shaped fountains are sprayed from one nozzle at a 70° angle against a flat surface such as a canvas. A method for cleaning paper machine wire, felt, canvas, etc., characterized by cleaning by spraying at a collision angle of 86 degrees. 2 A nozzle that is arranged in parallel at regular intervals on a shower pipe that is arranged parallel to the plane of paper machine wire, felt, canvas, etc., with a disk fixed to the tip of the nozzle, and a disk that is fixed to the tip of the nozzle. The surface is formed into a tapered shape with an inclination of 70° to 86° with respect to the axis of the nozzle, and the disc has a 2-mesh plate with an inclination of 4° to 20° with respect to the axis of the nozzle and perpendicular to the taper.
A shower nozzle for cleaning paper machine wire, felt, canvas, etc., characterized by having symmetrically formed injection holes. 3 Elbow-type nozzles that are arranged in parallel at regular intervals on a shower pipe that is arranged parallel to the plane of paper machine wire, felt, canvas, etc., with a disk fixed to the tip of the nozzle, and the disk The distal end surface of the disc is formed into a tapered shape with an inclination of 70° to 86° with respect to the axis passing through the center of the disc, and the disc has a tapered shape with an inclination of 4° to 20° with respect to the axis and perpendicular to the taper. The two injection holes are formed symmetrically so that the nozzles are symmetrically formed, and when the disk is viewed from the front with the base end of the nozzle facing down, the injection holes are arranged in parallel on the left and right. Shower nozzle for cleaning paper machine wire, felt, canvas, etc.