KR101522798B1 - Drying apparatus for strip - Google Patents

Abstract

The present invention relates to a drying device for a strip capable of preventing a cleaning solution from being re-fallen by air sprayed by a drying part in a degreasing of a strip as a moisture adsorption part is formed on the drying device. According to the present invention, the drying device for a strip comprises: the drying part having a plurality of spraying nozzles to spray air to the surface of the strip; and the moisture adsorption part positioned on a rear end of the drying part while being separated from the strip at a constant interval. The moisture adsorption part comprises: a plurality of rotation units, a driving unit to drive the plurality of rotation units, an adsorption unit wound along the circumference of the plurality of rotation units, and a spraying unit to spray air towards one area of the adsorption unit. According to the composition, the cleaning solution is not re-fallen by the air sprayed by the drying part to prevent the strip from being stained by water; thereby removing the factors for degrading the quality of the strip to improve the quality of a cold-rolled product.

Description

[0001] Drying apparatus for strip [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drying apparatus for a strip, and more particularly to a drying apparatus for a strip capable of improving the surface quality of the strip.

Generally, the cold-rolled strip is subjected to a brass annealing process to prevent oxide decarburization on the surface of the steel and to avoid losing metallic luster. At this time, in order to prevent the rolling oil from sticking to the surface of the strip while passing through the annealing furnace at high temperature, or to prevent scale from being formed, a degreasing process is performed to remove the rolling oil adhering to the surface of the strip as a pre-

After the strip passes through the degreasing facility for degreasing after the rolling, the strip is degreased by a degreasing device which chemically decomposes the surface of the strip, a rinsing device which wipes the alkali solution on the strip with hot hot water, Lt; / RTI >

The present invention provides a drying apparatus for a strip capable of preventing water from being stained on the strip by preventing the washing liquid from falling back by the air blown by the drying unit by forming the moisture adsorption unit on the drying apparatus during degreasing of the strip .

The drying apparatus for strips according to the present invention A drying unit having a plurality of spray nozzles for spraying air toward the surface of the strip; And a moisture adsorbing portion disposed at a rear end of the drying portion and spaced apart from the strip at a predetermined distance, wherein the moisture adsorbing portion includes a plurality of rotating means, driving means for driving the plurality of rotating means, An adsorption means wound around the periphery of the plurality of rotation means, and an injection means injecting air toward one region of the adsorption means.

Here, the injection means may be installed above the adsorption means at a position passing through the region facing the strip.

The injection means may be formed along the width direction of the adsorption means perpendicular to the direction in which the adsorption means advances.

In addition, it is possible to include the receiving means at a position corresponding to the injection means with the suction means interposed therebetween.

At this time, the absorption means may include calico.

Further, the water adsorption portion may be formed on the upper and lower portions of the strip, respectively.

In addition, the plurality of rotating means may be constituted by five rolls, and one of them may be a peripheral driving roll provided with the driving means.

In addition, the driving means may include a motor and a speed reducer.

In addition, one side of the injection means may include a control means for controlling the supply of air.

In addition, the drying unit may include a blocking frame extending from the outside of the housing to prevent the introduction of outside air into the moisture adsorption unit adjacent to the outlet of the housing, the inlet and the outlet being located inside the housing.

The separating member may further include a separating member extending from the outside of the housing toward the inner space of the adsorbing means wound around the plurality of rotating means, and the separating member may be formed with a moving portion so that the adsorbing means is movable.

In addition, the drying unit may include a hot air supply line for supplying hot air, a hot air discharge line for discharging the supplied hot air, and a heat exchanger for heating the discharged hot air.

According to the present invention, it is possible to prevent the cleaning liquid from falling down again by the air blown from the drying unit, thereby preventing the occurrence of water spots on the strips, thereby eliminating the factor of inhibiting the quality of the strips and improving the quality of the cold rolled products.

1 is a sectional view showing a drying apparatus for a general strip;
2 is a perspective view showing a drying apparatus for a strip provided with a moisture adsorption unit according to the present invention;
3 is a cross-sectional view showing a drying apparatus for a strip provided with the moisture adsorption unit of FIG. 2;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present invention and other details necessary for those skilled in the art to understand the present invention with reference to the accompanying drawings. However, the present invention may be embodied in many different forms within the scope of the appended claims, and therefore, the embodiments described below are merely illustrative, regardless of whether they are expressed or not.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. It should be noted that the same components in the drawings are denoted by the same reference numerals and signs as possible even if they are shown in different drawings. In addition, the thickness and size of each layer in the drawings may be exaggerated for convenience and clarity, and may differ from actual layer thicknesses and sizes.

1 is a sectional view showing a drying apparatus for a general strip.

Referring to FIG. 1, a degreasing apparatus includes a degreasing device for removing an oxidizing scale formed on a surface of a strip 8, and a rinsing device for removing a cleaning solution adhered to a surface of the strip, which is provided at a rear end of the degreasing device. The upper and lower strips further include a drying device 14 provided with a plurality of spray nozzles 18 in the width direction of the strip 8. The drying device 14 ejects air onto the surface of the strip 8 through the plurality of jetting nozzles 18 and removes moisture from the surface of the strip 8 through the air.

The drying apparatus 14 of the degreasing apparatus which is a pretreatment facility of a general annealing heat treatment line is a system in which the high temperature hot air generated in the heat exchanger 20 is supplied to the spray nozzle 18 of the drying apparatus 14 by the discharge pressure of the dryer fan 15 Lt; / RTI > At this time, the cleaning liquid 10 bounces and drops back to the strip 8 by air jetting during the drying of the strip 8 being moved, which causes water stains after the squeeze roll 19 so that the quality of the strip 8 .

FIG. 2 is a perspective view showing a drying apparatus for a strip provided with a moisture adsorption unit according to the present invention, and FIG. 3 is a sectional view showing a drying apparatus for a strip provided with the moisture adsorption unit of FIG.

2 and 3, the present invention relates to a stripping apparatus for stripping a strip 8, which is a stripping apparatus for stripping a strip 8, which is a pretreatment for annealing a stainless steel coil, after rinsing the strip 8 in an alkaline cleaning apparatus, It is a device to prevent stains.

The drying apparatus for strip according to the present invention comprises a drying unit 14 provided with a plurality of spray nozzles 18 for spraying air toward the surface of the strip 8 and a drying unit 14 located at the rear end of the drying unit 14, 8 which are spaced apart from each other by a predetermined distance.

At this time, the water adsorption unit 50 includes a plurality of rotation means 24, 25, 26, 31 and 32, driving means 22 for driving the plurality of rotation means 24, 25, 26, 31, A suction means 30 wound around the plurality of rotating means 24, 25, 26, 31 and 32 and a spray means 40 for spraying air toward one region of the suction means 30, ).

Here, the injection means 40 is installed above the adsorption means 30 at a position passing through the region facing the strip 8. The injection means 40 is formed along the width direction of the adsorption means 30 perpendicular to the direction in which the adsorption means 30 advances.

The drying unit 14 is located inside the housing 11 and includes a hot air supply line 20a for supplying hot air to the drying unit 14 in one area of the housing 11, A line 20b, and a heat exchanger 20 for heating the discharged hot air. At this time, the heat exchanger 20 is connected to the drying fan motor 15, so that the hot air discharged to the hot air discharge line 20b is moved to the drying fan motor 15. [ The heat exchanger 20 is connected to a control section 16 and a shutoff valve 17 for controlling the supply of air.

The moisture adsorption unit 50 is installed before the strip 8 that has passed through the drying unit 14 enters the pair of squeeze rolls 19. As described above, the water adsorption unit 50 includes adsorption means 30 capable of adsorbing moisture on and below the strip 8, rotation means 24, 25, and 26 for rotating the adsorption means 30, , 31, 32, and drive means 22, 23.

Here, the rotating means 24, 25, 26, 31 and 32 are constituted by five rolls, one of which is the peripheral driving roll 24 provided with the driving means 22 and 23. When the main drive roll 24 is rotated by the motor 22 and the speed reducer 23 provided on the main drive roll 24, the remaining four rolls 25, 26, 31, The rollers 25, 26, 31 and 32 rotate together. At this time, the five rolls 24, 25, 26, 31, 32 including the main drive roll 24 are wound by the absorbing means 30 formed of calico, which is capable of absorbing moisture.

These five rolls 24, 25, 26, 31 and 32 are roughly divided into two regions: two first rolls 31 and two rolls 32 located above the separating member 28, Three primary drive rolls 24, a third roll 25 and a fourth roll 26 positioned close to the strip 8. First, when the peripheral speed drive roll 24 rotates clockwise, the suction means 30 passes through the third roll 25 and the fourth roll 26 and then passes through the moving portion 29 of the separating member 28 And then passes through the first roll 31 and the second roll 32. At this time, a hole (not shown) may be formed in the drying unit 14 so that the suction means 30 that absorbs moisture may be dried, and hot air may be emitted.

An injection means (40) for injecting air to remove moisture is provided above the adsorption means (30) between the peripheral drive roll (24) and the second roll (32). A control means 41 formed of a shutoff valve for controlling the air supplied to the air nozzle head of the injection means 40 is provided in one region of the injection means 40. [ The adsorbing means 30 is interposed between the adsorbing means 30 and the injection means 40 so that the water adsorbed to the adsorbing means 30 by the air supplied from the injecting means 40 is not dropped to the strip 8, A support means 38 is provided.

The plurality of injection nozzles 18 of the drying unit 14 are located inside the housing 11 in which the inlet 11a and the outlet 11b are opened. A blocking frame 27 extending from the outside of the housing 11 may be formed so as to block the inflow of outside air into the moisture adsorbing part 50 adjacent to the outlet 11b of the housing 11. [

The apparatus further includes a separating member 28 extending from the outside of the housing 11 toward the inner space of the adsorption means wound around the plurality of rotating means 24, 25, 26, 31, The separating member 28 serves to prevent moisture from falling back from the absorbing means 30 absorbing the water splashed by the strip 8. The separating member 28 may be provided with a moving part 29 between the fourth roll 26 and the first roll 31 so that the adsorption means 30 can move.

As described above, the water adsorption unit 50 installed to prevent moisture from falling back into the strip 8 can be formed on the upper and lower portions of the strip 8, respectively.

Hereinafter, the operation of the drying apparatus for a strip having the water adsorption unit of the present invention will be described.

The strip 8 moves in one direction and moves from the rinsing section of the degreasing facility to the drying section 14. According to the present invention, in the process of drying the surface of the strip 8 using the hot air passed through the heat exchanger 20 after passing through the drying fan motor 15, the moisture on the strip 8 is protruded, 8 from being re-dropped.

When the main speed drive roll 24 is driven by driving the motor 22, the remaining subsidiary rolls 25, 26, 31, 32 wound around the suction means 30 are driven and rotated in the clockwise direction. At this time, the moisture is adsorbed to the three rolls close to the strip 8, that is, the adsorption means 30 wound around the peripheral speed drive roll 24, the third roll 25 and the fourth roll 26, Lt; / RTI >

The adsorption means 30 rotating in the clockwise direction passes through the moving portion 29 of the separating member 28 and then passes through the first roll 31 and the second roll 32. At this time, one area of the housing 11 is opened so that the adsorption means 30 formed of calyx can be dried, so that hot air is released to the open area and the adsorption means 30 is primarily dried.

Thereafter, air is supplied from the injecting means 40, and the adsorbing means 30 is secondarily dried. Thus, the adsorption means 30 is subjected to double drying. At this time, a receiving member 38 for receiving the moisture falling down to the lower portion of the suction means 30 by the spraying means 40 is installed in the region corresponding to the lower portion of the spraying means 40 with the suction means 30 interposed therebetween . As a result, the moisture adsorbed by the adsorption means 30 does not fall back to the strip 8, and the adsorption means 30 formed of calyx is dried. Here, the water adsorption unit 50 is installed on the upper and lower portions of the strip 8, respectively.

Therefore, according to the present invention, as water is re-dropped onto the strip 8 in the process of drying the strip 8, water stains are generated on the strip 8 passing through the squeeze roll 19, Can be prevented. As a result, the quality deterioration factor of the strip 8 can be eliminated, thereby improving the quality in the production of the strip

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be apparent to those skilled in the art that various modifications may be made without departing from the scope of the present invention.

The scope of the present invention is defined by the following claims. The scope of the present invention is not limited to the description of the specification, and all variations and modifications falling within the scope of the claims are included in the scope of the present invention.

8: strip 10: moisture
11: housing 11a: housing inlet
11b: Housing outlet 14: Drying section
18: injection nozzle 19: squeeze roll
20: heat exchanger 20a: hot air supply line
20b: hot air discharge line 22: motor
23: Reduction gear 24: Main drive roll
25: third roll 26: fourth roll
27: interrupting frame 28: separating member
29: moving part 30: suction means
31: first roll 32: second roll
38: support member 40: injection means
41: control means 50: water adsorption unit

Claims (12)

A drying unit having a plurality of spray nozzles for spraying air toward the surface of the strip; And
And a moisture adsorbing portion disposed at a rear end of the drying portion and spaced apart from the strip at a predetermined interval,
The water adsorption unit includes a plurality of rotation means, driving means for driving the plurality of rotation means, adsorption means wound around the plurality of rotation means, and air spraying means for spraying air toward one region of the adsorption means Comprising a spraying means,
Wherein the drying section further comprises a separating member located inside the housing in which the inlet and the outlet are opened and extending from the outside of the housing toward the inner space of the adsorption means wound on the plurality of rotating means. The method according to claim 1,
Wherein the spraying means is installed above the adsorption means at a position passing through a region facing the strip. The method according to claim 1,
Wherein the ejecting means is formed along a width direction of the adsorption means perpendicular to a direction in which the adsorption means advances. The method according to claim 1,
And a supporting means at a position corresponding to the ejecting means with the suction means interposed therebetween. The method according to claim 1,
Wherein the adsorption means comprises calico. The method according to claim 1,
Wherein the water adsorbing portion is formed on upper and lower portions of the strip, respectively. The method according to claim 1,
Wherein the plurality of rotating means is constituted by five rolls, and one of the rolls is a peripheral speed driving roll provided with the driving means. 8. The method of claim 7,
Wherein the driving means includes a motor and a speed reducer. The method according to claim 1,
And a control means for controlling supply of air to one side of the jetting means. The method according to claim 1,
And a blocking frame extending from the outside of the housing is formed to block the inflow of outside air into the moisture adsorption unit adjacent to the outlet of the housing. The method according to claim 1,
Wherein the separating member is provided with a moving unit such that the suction unit can move. The method according to claim 1,
Wherein the drying unit includes a hot air supply line for supplying hot air, a hot air discharge line for discharging the supplied hot air, and a heat exchanger for heating the discharged hot air.

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