JP3173434B2 - Submerged plate roll of cleaning equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a submerged plate roll of an apparatus for continuously cleaning steel strips, and the self-centering effect of the steel strip is maintained by forming grooves on the surface of the roll. The above description relates to a submerged plate roll of a cleaning device that can prevent the end of a steel strip from biting into a roll groove.

[0002]

2. Description of the Related Art In a process of manufacturing a steel strip, alkali cleaning or alkaline electrolytic cleaning is performed for the purpose of cleaning the surface of the steel strip. FIG. 19 shows an example of an alkaline electrolytic cleaning apparatus. In FIG. 19, reference numeral 1 denotes an alkaline immersion tank filled with an alkaline cleaning liquid 2 in which an alkaline cleaning agent is dissolved. After the alkaline cleaning liquid 2 is sprayed by one scrubber 4, it is immersed again in the alkaline cleaning liquid 2 in the alkaline electrolytic cleaning tank 5 to perform alkaline electrolytic cleaning. Then, after the hot water 7 is sprayed in the second scrubber 6, it is rinsed by passing through a hot water rinsing tank 8 filled with the hot water 7 and washed.

In FIG. 19, reference numeral 9 denotes a submerged sheet passing roll. The steel strip 3 is immersed in an alkaline immersion tank 1, an alkaline electrolytic cleaning tank 5, an alkaline cleaning liquid 2 in a hot water rinsing tank 8, or a hot water 7 liquid, respectively. It is a roll to make it.

In order to prevent slipping or meandering, the steel strip 3 and the cleaning liquid are generally caught between the rolls in the submerged plate roll 9 of the alkaline electrolytic cleaning apparatus configured as described above. As shown in FIG. 20, a submerged plate roll having a plurality of circumferential grooves 9a formed on the surface of the submerged plate roll 9 in a direction perpendicular to the roll axis direction is applied.

Japanese Patent Application Laid-Open No. 64-79356 discloses that the roll surface has a pitch of 20 to 60 mm and a depth of 0.5 to 60 mm.
A sink roll has been proposed which prevents a meandering of a steel strip by providing a cross-grouped groove having a radius of 10 mm, a width of 5 to 10 mm, and a radius of 3 to 10 mm.

[0006]

However, among the above-mentioned grooved rolls, as shown in FIG.
In the case where the spiral groove is provided in the direction perpendicular to the roll axis, when the relationship between the roll groove and the rotation direction is as shown in FIG. ,
Although it is possible to prevent the steel strip from meandering by the self-centering effect, when the relationship between the roll groove and the rotation direction is as shown in FIG. 21B, there is no self-centering effect, and The end of the steel strip is frequently caught in the roll groove, and the roll groove breaks or a cut is generated at the end of the steel strip. It also has an adverse effect on product quality. In addition, when a cut occurs at the end of the steel strip, the steel strip sometimes breaks, and not only does the need to stop the cleaning device for a long time due to the re-passing of the steel strip, processing of broken pieces, etc., occur, It is not preferable in terms of safety.

In addition, when connecting or dividing the steel strip, when the cleaning device is stopped or when the cleaning device is stopped due to troubles in the device, the tension for holding the steel strip becomes stationary and decreases. The phenomenon that the band edge bites into the roll groove becomes remarkably remarkable.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide a submerged plate roll of a cleaning apparatus in which the end of a steel strip does not bite into a roll groove. I have.

[0009]

In order to achieve the above-mentioned object, in the cleaning apparatus of the present invention, the submerged plate roll is provided with an angle and a pitch of a spiral groove formed on the roll surface with respect to a direction perpendicular to the roll axis. , The width is limited to an optimum range. By doing so, the end of the steel strip does not bite into the spiral groove if it is cut on the roll surface, and the steel strip can be stably washed continuously.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION A submerged passing roll of a cleaning apparatus according to a first present invention is a submerged passing roll of an apparatus for continuously cleaning a steel strip. 1 to 10
spiral grooves with a width of 2 mm, at a pitch of 2-200 mm,
Further, a plurality of pieces are engraved symmetrically with respect to the center in the roll axis direction at an angle of 10 to 50 ° in a direction perpendicular to the roll axis.

The angle α of the spiral groove 11a with respect to the direction perpendicular to the roll axis in the submerged plate roll of the cleaning device according to the first invention is defined by the spiral groove 11a formed on the surface of the submerged plate roll 11. Of the end 3a of the steel strip 3 into the
It is determined by the self-centering effect of the steel strip, and in the experiment of the present inventors, the angle α needs to be 10 to 50 °. If the angle is less than 10 °, as shown in FIG. 15, the end 3a of the steel strip 3 will bite into the spiral groove 11a formed on the surface of the submerged plate roll 11 like the conventional roll. is there. On the other hand, if it exceeds 50 °, the self-centering effect of the steel strip 3 decreases.

Further, in the submerged plate roll of the cleaning device according to the first invention, the pitch P of the spiral grooves 11a is
The reason for setting the thickness to 2 to 200 mm is that if the thickness is less than 2 mm, the strength of the submerged plate roll 11 becomes weak, which leads to breakage of the roll surface. Also, if it exceeds 200 mm, the self-centering effect of the steel strip 3 is reduced.

In the submerged plate roll of the cleaning device according to the first aspect of the present invention, the width B of the spiral groove 11a is set to 1 to 5.
The reason why the thickness is set to 10 mm is that if the thickness is less than 1 mm, the self-centering effect of the steel strip 3 is reduced. Also, 10
If it exceeds mm, the end 3a of the steel strip 3 will bite into the spiral groove 11a if it is engraved on the surface of the submerged plate roll 11.

In the submerged plate roll of the cleaning device according to the first aspect of the present invention, the spiral groove 11a is engraved symmetrically with respect to the center in the roll axis direction because of the self-centering of the steel strip. This is because an effect is obtained, and in the spiral groove 11a inclined only to one side as shown in FIG. 16, a lateral force acts on the steel strip, and the steel strip escapes sideways.

In the submerged sheet passing roll of the cleaning device according to the first aspect of the present invention, meandering of the steel strip can be prevented by the self-centering effect of the steel strip, and the spiral groove at the end of the steel strip can be prevented. Therefore, the steel strip can be continuously and stably washed without breakage of the spiral groove or a cut at the end of the steel strip.

A second embodiment of the present invention is directed to a submerged plate roll of an apparatus for continuously cleaning steel strips, wherein the surface of the submerged plate roll has a diameter of 1 to 10 mm. Spiral grooves with a width of 20 to 200 mm pitch, and
A plurality of pieces are engraved at a right angle to the roll axis at an angle of 10 to 50 °, symmetrically with respect to the center in the roll axis direction, and in a staggered right and left direction.

In the submerged sheet passing roll of the cleaning apparatus according to the second invention, the spiral grooves 11a are formed symmetrically with respect to the center in the roll axis direction and in a zigzag manner in FIG. As shown in FIG. 5, the end 3a of the steel strip 3 is formed on the surface of the submerged plate roll 11 at the same time on the left and right sides by the spiral groove 11a
This is to prevent biting into. Therefore, the steel strip is not fixed by the spiral groove 11a. That is, when one end of the steel strip bites into the spiral groove, a force in the opposite direction acts on the steel strip due to the contact between the end of the steel strip and the spiral groove, and the steel strip bites into the spiral groove. To prevent intrusion.

Further, in the submerged sheet passing roll of the cleaning apparatus according to the second invention, the pitch P of the spiral groove 11a is
The reason why the diameter is set to 20 to 200 mm is that when the diameter is less than 20 mm, depending on the occurrence of meandering of the steel strip, it becomes the same as the case of the submerged plate roll of the cleaning device according to the first embodiment of the present invention. This is because the effect of engraving symmetrically with respect to the center and in a zigzag pattern on the left and right sides is lost. In addition, 200mm
This is because, if it exceeds, the self-centering effect of the steel strip 3 decreases.

In the above-mentioned submerged sheet passing roll of the cleaning apparatus according to the second aspect of the present invention, meandering of the steel strip can be prevented by the self-centering effect of the steel strip, and at the same time, the spiral groove at the end of the steel strip can be formed. Biting of the cleaning device according to the first aspect of the present invention can be more effectively prevented than in the submerged sheet passing roll, so that there is no breakage of the spiral groove or a cut at the end of the steel strip. The steel strip can be continuously and stably washed.

In the third aspect of the present invention, the submerged sheet passing roll of the cleaning apparatus according to the first or second aspect of the present invention is characterized in that the spiral groove in the submerged sheet passing roll of the first or second aspect of the present invention is perpendicular to the roll axis. It is engraved obliquely at an angle of 10 to 45 degrees with respect to the center in the direction plane.

In a third embodiment of the present invention, the spiral groove 11a is formed obliquely at an angle β of 10 to 45 ° with respect to the center in a plane perpendicular to the roll axis. Engraving prevents the end 3a of the steel strip 3 from biting into the spiral groove 11a engraved on the surface of the submerged plate roll 11, as shown in FIG. That's why. Therefore, the steel strip is not held by the spiral groove. That is, since the spiral groove is oblique to the front and back surfaces of the steel strip, the end of the steel strip hardly bites into the spiral groove.

In the above-described submerged plate roll of the cleaning device according to the third aspect of the present invention, meandering of the steel strip can be prevented by the self-centering effect of the steel strip, and at the same time, the spiral groove at the end of the steel strip can be formed. Can be prevented more effectively than the above-described submerged plate roll of the cleaning device according to the first or second aspect of the present invention, so that the spiral groove is broken or the steel strip ends are cut. The steel strip can be continuously and stably washed without causing flaws.

The submerged plate roll of the cleaning apparatus according to the present invention only needs to form the spiral groove as described above on the surface of the roll, and the material of the roll surface is rubber, resin, steel, or The roll surface must be made of synthetic rubber (hardness range JIS A 65) to prevent helical grooves from being transferred to the surface of the steel strip and to prevent the occurrence of surface defects such as uneven gloss, although not particularly limited to other alloy steels. To 85).

The cross-sectional shape of the spiral groove 11a may be a semicircle or U-shape as shown in FIG.
Although not particularly limited, such as a rectangular shape as shown in (b) and an inverted triangular shape as shown in FIG. 13 (c), in order to prevent surface defects such as gloss spots, the shoulder of the spiral groove is required. The part is desirably subjected to a radius processing of 3 to 10 mm.

Further, the depth d of the spiral groove 11a is not particularly limited. However, considering the wear of the roll, it is preferable to reduce the effective thickness D to about 1/3 as shown in FIG. desirable.

If the spiral groove is formed in such a manner that at least two-thirds of the width of the steel strip is in contact with the roll, the spiral groove can be formed even if there is no spiral groove at the axial center of the roll. It does not matter if there are no spiral grooves at both ends.

The shape of the spiral groove in plan view may be a straight line or a wavy line, but is preferably a straight line in consideration of processing costs.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a submerged plate roll of a cleaning apparatus according to the present invention will be described with reference to the embodiments shown in FIGS. FIG. 1 is a front view of a submerged plate roll of the cleaning device according to the first embodiment of the present invention, and FIGS. 2 to 4 are results of an investigation on the centering effect of the submerged plate roll of the cleaning device according to the first embodiment of the present invention. Figure showing
FIG. 5 is a front view of a submerged plate roll of the cleaning device according to the second embodiment of the present invention, and FIGS. 6 to 8 are results of an investigation of a centering effect of the submerged plate roll of the cleaning device according to the second embodiment of the present invention. FIG. 9 is a front view of a submerged plate roll of the cleaning device according to the third embodiment of the present invention, and FIGS. 10 to 12 are centering of the submerged plate roll of the cleaning device according to the third embodiment of the present invention. It is a figure showing an investigation result of an effect.

Example 1 In FIG. 1, reference numeral 11 denotes a submerged plate roll of the cleaning apparatus according to the first invention, for example, 40 spiral grooves 11a are formed on the surface thereof in the axial direction of the roll. Engraved symmetrically about the center. Then, in the submerged sheet passing roll 11 of the cleaning device according to the present invention, the pitch P of the spiral groove 11a is 2 to 200 mm, and the width B is 1 to 200.
10 mm and 1 in the direction perpendicular to the roll axis.
It has an angle α of 0 to 50 °.

In order to confirm the effect of the submerged plate roll 11 of the cleaning apparatus according to the first invention, an alkali immersion tank 1, an alkaline electrolytic cleaning tank 5, a hot water rinse, and an alkaline electrolytic cleaning apparatus shown in FIG. The angle α of the spiral groove is 45 °, the width B is 5 mm, and the pitch P is 5
FIG. 2 shows the results of investigating the self-centering effect by changing the values to 0, 100, 150, 200, 250, and 300 mm. The conditions at the time of the investigation are shown in Table 1 below.

[0031]

[Table 1]

FIG. 2 shows that when the pitch P exceeds 200 mm, the meandering amount of the steel strip exceeds 20 mm, and the self-centering effect is reduced.

FIG. 3 shows that the pitch P of the spiral groove is 50 m.
m, width B is 5 mm, and angle α is 5, 10,
2 shows the results of examining the self-centering effect under the same conditions as in the experiment of FIG. 2 except that the angles were changed to 30, 45, 50, and 60 °. According to FIG. 3, the angle α is 10 to 50.
°, the meandering of the steel strip is 20m
m, the self-centering effect is reduced.

FIG. 4 shows that the pitch P of the spiral groove is 50 m.
m and the angle α is 45 °, the width B is 1, 2,
5 shows the results of investigating the self-centering effect under the same conditions as in the experiment of FIG. 2 by changing the size to 5, 8, 10, and 12 mm. FIG. 4 shows that when the width B exceeds 10 mm, the meandering amount of the steel strip exceeds 20 mm, and the self-centering effect is reduced.

Next, the pitch P of the spiral groove is 50 mm,
An angle α of 45 ° and a width B of 5 mm, the submerged plate roll of the cleaning device according to the first embodiment of the present invention shown in FIG. 1 and the conventional circumferential groove shown in FIG. 20 (pitch P = 50 mm, Angle α = 90
°, width B = 5 mm) when a submerged threading roll is used under the same conditions as in the experiment of FIG. 2 described above, the cuts due to biting into the spiral groove at the end of the steel strip and the fracture Table 2 below shows the number of occurrences and the results of investigation of the meandering amount of the steel strip.

[0036]

[Table 2]

As shown in Table 2 above, the case where the submerged sheet roll of the cleaning device according to the first invention is used and the case where the conventional submerged sheet roll provided with a circumferential groove is used. As a result, the number of cuts at the end of the steel strip could be reduced to 1/3, and the breakage of the steel strip could be reduced to 1/4. The meandering amount was almost the same. Therefore, the steel strip could be stably washed.

[Embodiment 2] In FIG. 5, reference numeral 11 denotes a submerged plate roll of the cleaning apparatus according to the second invention, for example, 40 spiral grooves 11a are formed on the surface thereof in the roll axis direction. It is engraved symmetrically with respect to the center and in a zigzag pattern. In the submerged sheet passing roll 11 of the cleaning device according to the present invention, the pitch P of the spiral groove 11a is set to 20 to 2
00 mm, the width B is 1 to 10 mm, and the angle α is 10 to 50 ° in the direction perpendicular to the roll axis.

In order to confirm the effect of the submerged roll 11 of the cleaning apparatus according to the second invention, the alkaline immersion tank 1, the alkaline electrolytic cleaning tank 5, the hot water rinse, and the alkaline electrolytic cleaning apparatus shown in FIG. The angle α of the spiral groove is 45 °, the width B is 5 mm, and the pitch P is 5 mm.
FIG. 6 shows the results of investigating the self-centering effect by changing the values to 0, 100, 150, 200, 250, and 300 mm. The conditions at the time of the investigation are the same as those in Table 1 above.

FIG. 6 shows that when the pitch P exceeds 200 mm, the meandering amount of the steel strip exceeds 20 mm, and the self-centering effect is reduced.

FIG. 7 shows that the pitch P of the spiral groove is 50 m.
m, width B is 5 mm, and angle α is 5, 10,
FIG. 8 shows the results of examining the self-centering effect under the same conditions as in the experiment of FIG. 6 by changing the angles to 30, 45, 50, and 60 °. According to FIG. 7, the angle α is 10 to 50.
°, the meandering of the steel strip is 20m
m, the self-centering effect is reduced.

FIG. 8 shows that the pitch P of the spiral groove is 50 m.
m and the angle α is 45 °, the width B is 1, 2,
7 shows the results of investigating the self-centering effect under the same conditions as in the experiment of FIG. 6 by changing the size to 5, 8, 10, and 12 mm. From FIG. 8, it can be seen that when the width B exceeds 10 mm, the meandering amount of the steel strip exceeds 20 mm, and the self-centering effect decreases.

Next, the pitch P of the spiral groove is 50 mm,
An angle α of 45 ° and a width B of 5 mm, the submerged plate roll of the cleaning device according to the second embodiment of the present invention shown in FIG. 5 and the conventional circumferential groove shown in FIG. 20 (pitch P = 50 mm, Angle α = 90
°, width B = 5 mm) when a submerged threading roll provided under the same conditions as in the experiment of FIG. Table 3 below shows the number of occurrences and the results of investigating the meandering amount of the steel strip.

[0044]

[Table 3]

As shown in Table 3 above, the case where the submerged plate roll of the cleaning device according to the second invention is used and the case where the conventional submerged plate roll provided with a circumferential groove is used In comparison, the frequency of occurrence of cuts at the end of the steel strip could be reduced to 1/7, and no breakage of the steel strip occurred. The meandering amount was almost the same. Therefore, the steel strip could be stably washed.

[Embodiment 3] In FIG. 9, reference numeral 11 denotes a submerged plate roll of the cleaning apparatus according to the third invention, for example, 40 spiral grooves 11a are formed on the surface thereof in the axial direction of the roll. Engraved symmetrically about the center. Then, in the submerged sheet passing roll 11 of the cleaning device according to the present invention, the pitch P of the spiral groove 11a is 2 to 200 mm, and the width B is 1 to 200.
10 mm and 1 in the direction perpendicular to the roll axis.
It has an angle α of 0 to 50 °. in addition,
In the submerged threading roll 11 of the cleaning device according to the third aspect of the present invention, the spiral groove 11a is engraved obliquely at an angle β of 10 to 45 ° with respect to the center on a plane perpendicular to the roll axis. It is doing.

In order to confirm the effect of the submerged plate roll 11 of the cleaning apparatus according to the third invention, the alkaline immersion tank 1, the alkaline electrolytic cleaning tank 5, the hot water rinse, and the alkaline electrolytic cleaning apparatus shown in FIG. The angle α of the spiral groove is 45 °, the width B is 5 mm, and the angle β is 30 °.
And the pitch P is 50, 100, 150, 200, 25
FIG. 10 shows the results of investigating the self-centering effect by changing the values to 0 and 300 mm. The conditions at the time of the investigation are the same as those in Table 1 above.

FIG. 10 shows that when the pitch P exceeds 200 mm, the meandering amount of the steel strip exceeds 20 mm, and the self-centering effect is reduced.

FIG. 11 shows that the pitch P of the spiral groove is 20 m.
m, width B is 2 mm, and angle β is 30 °,
10 shows the results of investigating the self-centering effect under the same conditions as in the experiment of FIG. 10 by changing the angle α to 5, 10, 30, 45, 50, and 60 °. From FIG. 11, it can be seen that when the angle α is out of the range of 10 to 50 °, the meandering amount of the steel strip exceeds 20 mm, and the self-centering effect is reduced.

FIG. 12 shows that the pitch P of the spiral groove is 20 m.
m, the angle α was 45 °, and the angle β was 30 °, the width B was changed to 1, 2, 5, 8, 10, and 12 mm, and the self-centering effect was obtained under the same conditions as the experiment of FIG. This shows the result of an investigation. It can be seen from FIG. 12 that when the width B exceeds 10 mm, the meandering amount of the steel strip exceeds 20 mm, and the self-centering effect decreases.

Next, the pitch P of the spiral groove is 20 mm,
The submerged plate roll of the cleaning device according to the third embodiment of the present invention shown in FIG.
Table 4 below shows the state of occurrence of cuts at the end of the steel strip due to the change in the angle β when used under the same conditions as those in the experiment. From Table 4, it can be seen that when the angle β is out of the range of 10 to 45 °, a cut is generated at the end of the steel strip and a spiral groove cannot be formed.

[0052]

[Table 4]

Next, the pitch P of the spiral groove is 20 mm,
The submerged plate roll of the cleaning device according to the third invention shown in FIG. 9 having an angle α of 45 °, a width B of 2 mm and an angle β of 30 °, and the conventional circumferential groove shown in FIG. (Pitch P = 50m
m, an angle α = 90 °, and a width B = 5 mm) when a roll of submerged plate is used under the same conditions as in the experiment of FIG. 10 described above, by biting into the spiral groove at the end of the steel strip. Table 5 below shows the results obtained by examining the cuts, the number of breaks, and the amount of meandering of the steel strip.

[0054]

[Table 5]

As shown in Table 5 above, the case where the submerged plate roll of the cleaning device according to the third invention is used and the case where the conventional submerged plate roll provided with a circumferential groove is used. In comparison, the number of cuts at the end of the steel strip could be suppressed to 1/20 or less, and no breakage of the steel strip occurred. Also,
The meandering amount was almost the same. Therefore, the steel strip could be stably washed.

[Embodiment 4] Although Embodiment 4 is not shown,
The spiral groove 11a of the submerged plate roll 11 of the cleaning device according to the third aspect of the present invention shown in FIG. 9 is engraved in a zigzag pattern with respect to the center in the roll axis direction.

In order to confirm the effect of the submerged roll 11 of the cleaning apparatus according to the third aspect of the present invention in Example 4, the alkali immersion tank 1 and the alkaline electrolytic cleaning tank of the alkaline electrolytic cleaning apparatus shown in FIG. 5. The third invention of the fourth embodiment in which the spiral groove pitch P is 50 mm, the angle α is 45 °, the width B is 2 mm, and the angle β is 30 ° in the submerged plate roll of the hot water rinsing tank 8. And the conventional circumferential groove (pitch P = 50 m) shown in FIG.
m, an angle α = 90 °, and a width B = 5 mm) when a roll of submerged plate is used under the same conditions as in the experiment of FIG. 10 described above, by biting into the spiral groove at the end of the steel strip. Table 6 below shows the results obtained by examining the cuts, the number of breaks, and the meandering amount of the steel strip.

[0058]

[Table 6]

As shown in Table 6 above, in the fourth embodiment, the submerged plate roll of the cleaning device according to the third invention is used, and the conventional submerged plate roll provided with a circumferential groove is used. In comparison with the case where No. was used, there were no occurrences of cuts at the end of the steel strip and no breakage of the steel strip. The meandering amount was almost the same. Therefore, the steel strip could be stably washed.

In the above embodiment, the present invention is applied to an alkaline electrolytic cleaning apparatus. However, the present invention is applicable to pre-cleaning of an electroplating apparatus, a hot dip galvanizing apparatus, a continuous annealing apparatus, a coating apparatus, and the like. It goes without saying that the same effect as the example can be exerted.

In the above-described embodiment, the submerged plate roll of the present invention is applied to all of the submerged plate rolls of the alkaline immersion tank, the alkaline electrolytic cleaning tank, and the hot water rinsing tank of the alkaline electrolytic cleaning apparatus. However, the roll of the present invention may be applied to only some of the submerged sheet passing rolls depending on the form of meandering.

[0062]

As described above, according to the present invention, the angle, pitch, and width of the spiral groove engraved on the roll surface with respect to the direction perpendicular to the roll axis, or, if necessary, the roll axis of the spiral groove Since the cutting angle with respect to the perpendicular direction is limited to the optimum range, if the end of the steel strip is cut on the roll surface, it will not bite into the spiral groove, and the conventional self-centering effect can be maintained. Thus, the occurrence of cuts at the ends of the steel strip can be prevented, and the steel strip can be continuously washed in a stable state in terms of quality and safety.

[Brief description of the drawings]

FIG. 1 is a front view of a submerged plate roll of a cleaning apparatus according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a result of investigation on a centering effect of a submerged plate roll of the cleaning device according to the first embodiment of the present invention, in a case where a pitch P of a spiral groove is changed.

FIG. 3 is a view showing a result of investigation on a centering effect of a submerged sheet passing roll of the cleaning device according to the first invention, and is a view in a case where an angle α of a spiral groove is changed.

FIG. 4 is a view showing a result of investigation on a centering effect of the submerged sheet passing roll of the cleaning device according to the first embodiment of the present invention, in which a width B of a spiral groove is changed.

FIG. 5 is a front view of a submerged sheet passing roll of the cleaning device according to the second invention.

FIG. 6 is a diagram showing a result of investigation on a centering effect of a submerged sheet passing roll of the cleaning device according to the second invention, in which a pitch P of a spiral groove is changed.

FIG. 7 is a view showing a result of investigation on a centering effect of a submerged sheet passing roll of the cleaning apparatus according to the second invention, and is a view when an angle α of a spiral groove is changed.

FIG. 8 is a view showing a result of investigation on a centering effect of the submerged sheet passing roll of the cleaning device according to the second invention, and is a view when the width B of the spiral groove is changed.

FIG. 9 is a front view of a submerged plate roll of the cleaning device according to the third invention.

FIG. 10 is a view showing a result of investigation on a centering effect of a threading roll in a cleaning device according to a third embodiment of the present invention, in which a pitch P of a spiral groove is changed.

FIG. 11 is a view showing a result of investigation on a centering effect of a submerged sheet passing roll of the cleaning device according to the third invention, and is a view in a case where an angle α of a spiral groove is changed.

FIG. 12 is a view showing a result of investigation on a centering effect of a submerged sheet passing roll of the cleaning device according to the third invention, and is a view in a case where a width B of a spiral groove is changed.

FIGS. 13A to 13C are diagrams illustrating an example of a shape of a spiral groove of a submerged plate roll of the cleaning device according to the present invention.

FIG. 14 is an explanatory diagram of a cutting depth of a spiral groove of a submerged sheet passing roll of the cleaning device according to the present invention.

15A and 15B are explanatory diagrams of a problem in a case where the angle α of the spiral groove in the submerged sheet passing roll of the cleaning device according to the first invention is less than 10 °, and FIG. 15A is a diagram in FIG. FIG. 2A is a side view of FIG.

FIG. 16 is a view for explaining the reason for engraving the spiral groove symmetrically about the center in the roll axis direction in the submerged plate roll of the cleaning device according to the first invention, and is inclined only to one side. It is a front view of the submerged plate roll in which the spiral groove was carved.

FIG. 17 explains the reason for engraving spiral grooves symmetrically with respect to the center in the roll axis direction and in a staggered right and left direction in the submerged plate roll of the cleaning apparatus according to the second invention. 3A is a front view, and FIG. 3B is a side view.

FIG. 18 shows a third embodiment of the cleaning device according to the present invention, in which the spiral groove is formed obliquely at an angle β of 10 to 45 ° with respect to the center in the roll axis direction. 7A is a front view, and FIG. 8B is a side view.

FIG. 19 is an explanatory view showing an example of an alkaline electrolytic cleaning apparatus.

FIG. 20 is a front view of a conventional submerged plate roll in which a circumferential groove is cut in a direction perpendicular to the roll axis direction.

FIGS. 21 (a) and (b) are explanatory views showing the relationship between a roll groove and a roll rotation direction in a threading roll in which a spiral groove is cut in a direction perpendicular to the roll axis direction.

[Explanation of symbols]

 3 Steel strip 11 Submerged thread roll 11a Spiral groove α angle P pitch B width β angle

Claims (3)

(57) [Claims] 1. A submerged plate roll of an apparatus for continuously cleaning a steel strip, wherein the surface of the submerged plate roll is 1 to 10 m long.
A plurality of spiral grooves having a width of m are formed at a pitch of 2 to 200 mm and at an angle of 10 to 50 ° in a direction perpendicular to the roll axis, symmetrically with respect to the center in the roll axis direction. ,
A submerged sheet passing roll of a cleaning device characterized by being engraved. 2. A submerged plate roll of an apparatus for continuously cleaning a steel strip, wherein the surface of the submerged plate roll is 1 to 10 m long.
spiral grooves with a width of 20 m at a pitch of 20 to 200 mm,
And, having an angle of 10 to 50 ° in a direction perpendicular to the roll axis, symmetrically with respect to the center in the roll axis direction, and
A submerged sheet passing roll of a cleaning device, wherein a plurality of pieces are engraved in a zigzag pattern on the right and left sides. 3. The helical groove in the submerged plate roll of the cleaning device according to claim 1 or 2 is formed obliquely at an angle of 10 to 45 ° with respect to the center in a plane perpendicular to the roll axis. A submerged sheet passing roll of a cleaning device characterized by being engraved.