KR100794746B1 - Removal Equipment for Scale - Google Patents

Abstract

The present invention relates to an apparatus for removing scale from a surface of a strip of a rolling process, and more particularly, to an apparatus for removing scale from a scale by effectively separating scale-containing air from a scale and discharging it with clean air, And it is an object of the present invention to provide a scale removal device capable of preventing environmental pollution.

The scale removing apparatus of the present invention includes a scale hood unit positioned at upper and lower portions in a vertical direction of a strip and interlocked by an amount that the strip is up and down to suck and suck a scale on the surface of the strip, And a scale removal unit which separates and removes the scale by increasing the residence time by the aberration while the scale passes through the water.

The apparatus according to the present invention can be downsized by the scale removing apparatus of the present invention and environmental pollution can be prevented by exhausting the air containing scale by liquefied air. It is possible to prevent deterioration of product quality.

Scale removing device, hood, dust collecting tank, screw, disk, magnet, brush, adsorption drum, scraper

Description

Removal Equipment for Scale < RTI ID = 0.0 >             

1A is a schematic diagram illustrating a conventional descale apparatus;

1B is an enlarged perspective view of the "P portion"

FIG. 2 is a schematic view showing the scale removing apparatus of the present invention.

3 is a cross-sectional view showing a scale hood portion of the descale apparatus of the present invention

4 is a perspective view showing the upper hood of the scale hood portion of the descale apparatus of the present invention.

5 is an exploded perspective view showing the upper hood of the scale hood portion of the descale apparatus of the present invention.

6 is an exploded perspective view showing a scale adsorption drum of the scale hood portion of the descale apparatus of the present invention.

7 is a perspective view showing a scale removing unit of the scale removing apparatus of the present invention.

8 is a perspective view showing a dust collecting tank of the scale removing unit of the descale apparatus of the present invention.

9 is an exploded perspective view showing a disk and a scraper installed in a dust collecting tank of a scale removing unit of the descale apparatus of the present invention.                 

10 is a cross-sectional view showing a disk installed in the dust collecting tank of the scale removing unit of the descale apparatus of the present invention

11 is an exploded perspective view showing a screw casing of the scale removing unit of the scale removing apparatus of the present invention.

12 is a schematic cross-sectional view showing the operation inside the dust collecting tank of the scale removing unit of the descaling apparatus of the present invention

13 is a schematic sectional view showing the flow of scale-containing air inside the dust collecting tank of the scale removing unit of the descale apparatus of the present invention

14 is a partial perspective view showing the operation of a second disk and a scraper installed in the dust collecting tank of the scale removing unit of the descale apparatus of the present invention

15 is a schematic sectional view showing an installation angle of a scraper installed in the dust collecting tank of the scale removing unit among the scale removing apparatuses of the present invention

16 is a flowchart showing an operation relationship of the descale apparatus of the present invention

Description of the Related Art

A: Scale hood part B: Scale removal

a: upper hood b: lower hood

1d: dust collecting fan 7a, 7b: rolling roll

10: Strip 10a: Scale

101a: first brush roll 101b: second brush roll                 

103a, 103b: Guide roll 110: Scale adsorption drum

115: Magnet half body 120: Magnet half body fixing shaft

200: dust collecting tank 207: touch bar

208: Weight sensing limit switch 210: Disk

211: first disk 212: second disk

230: Scraper 350: Screw

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a device for removing a scale from a surface of a strip generated in various temper rolling processes, and more particularly, In a final process in which the scaling cooling water can not be used, a roll mark is generated due to damage to the roll surface due to scaling, thereby causing a stoppage time of the process, and a scale Removing device.

Generally, hot-rolled coils are supplied to the consumer as a final product after a skin pass mill or a dividing operation of a hot rolling mill.

In this process, foreign substances such as scales, which are peeled from the surface of the hot rolled strip, interfere with the rolled surface and adversely affect the quality of the product.

Accordingly, a lot of efforts have been made to remove the scale generated on the surface of the strip. Among them, the method of spraying high-pressure water is known as the most efficient method of removing the scale.

However, when water is directly sprayed on the strip according to the above-described method in various temper rolling processes, the surface of the product may be oxidized and the product may not be used.

Therefore, as shown in Figs. 1A and 1B, the dust is sucked by the dust-collecting fan 1d via the hoods 1a and 1b provided at the upper and lower portions of the strip 10 and the dust collector 1c connected to the hood, And the scale 10a on the scale 10a is collected and removed.

However, in the above scale removing apparatus, the scale separated from the surface of the strip is collected through the hoods 1a and 1b while the curved surface of the strip is expanded by the pressure roll 2.

At this time, since the progress speed of the strip (about 400 mpm / min) is too fast, the scale does not suck well into the hood and proceeds as it is. As a result, the scale or the like enters the rolling rolls 7a and 7b, .

Accordingly, there is a problem in that a roll mark is generated on the surface of the product, and in order to prevent this, there is a problem that the surface of the rolling roll must be repaired or the rolling roll must be replaced prematurely. In particular, There is a problem that the risk of a safety accident is high, and a productivity is lowered due to a delay in work.

In order to remove the scale efficiently by using the above-described scale removing apparatus, in order to efficiently remove the scale, the scales may be sucked into the hoods 1a and 1b provided at the upper and lower portions of the strip 10, It is necessary to increase the size of the strip or slow down the progress of the strip very slowly.

However, since the size of the hood is increased, the dust collecting apparatus itself needs to be enlarged. Accordingly, there is a problem that the equipment of the process line must be enlarged. If the speed of the strip is slowed down, the scale may be removed, As shown in FIG.

Conventionally, an air purge line (not shown) is installed on the entire surface of the rolling rolls 7a and 7b to blow out the scale 10a when the strip 10 is moved, There is a problem that the scale dispersed by the air purging is again adsorbed on the surface of the rolling roll, so that the scale on the surface of the strip is not effectively removed .

Disclosure of the Invention The present invention has been conceived to solve the above-mentioned problems, and it is an object of the present invention to provide a scale adsorption drum having a semicircle formed therein with a magnet and a scale hood portion provided with a brush, And removing the sucked scale from a dust collecting tank having a disk on which a magnet is formed, thereby improving the dust collecting efficiency of the scale, thereby improving the quality of the product. have.

Another object of the present invention is to provide a scale removing device capable of preventing environmental pollution by reducing the size of the apparatus, effectively separating the sucked air from the scale with the scale, and discharging the clean air.

As a means for achieving the above object, the scale removing apparatus of the present invention comprises a scale hood portion and a scale removing portion, wherein the scale hood portion is lifted and lowered by driving of a cylinder and connected to a duct in which a dust- And a scale removing unit connected to the scale hood unit is composed of a dust collecting tank and a casing in which a screw is installed, and a magneto semicircle is integrally coupled to the upper hood and the lower hood, A first brush roll installed on the upper side of the scale adsorption drum and rotated by the motor, a guide roll provided on the left and right sides of the scale adsorption drum, and a guide roll provided on the scale adsorption drum and the right side guide A second brush roll installed between the rolls and rotated by a motor, and connected to the dust collecting fan, A dust collecting tank having an air inlet through which the air containing the work is introduced through the scale hood portion and an air outlet through which the clean air from which the fine scale is removed is discharged to the outside of the dust collecting tank, A first disk having a first shaft coupled to the first disk, a first disk having a crescent-shaped hole formed on one side thereof, and a second disk having a hole formed in one side of the hole of the first disk and magnetically coupled to the first disk. A plurality of discs fixed on the first shaft and a semicylindrical scraper contacting the surface of the second disc, and a plurality of scrapers provided on one side of the dust collecting tank and communicating with the inside of the dust collecting tank The casing is provided with a screw which is installed on a screw shaft and rotated by a motor, and a supporting table formed on the upper side of the casing is provided with a dust collecting tank A supporting rod guide linked to the fixed body is connected to the supporting rod formed on the lower side of the lower side surface of the cylinder, and a supporting rod guide linked to the fixed body is connected to the lower side surface of the collecting tank. do.

The concave and convex portions are formed on the lower surface of the second disk and the concave and convex portions are formed on the upper portion of the scraper so as to fit into the concave and convex portions formed on the lower surface of the second disk.

In addition, a touch bar and a weight sensing limit switch are provided at the bottom of the dust collecting tank to sense the weight of the dust collecting tank.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

2 is an overall schematic view showing the descale apparatus of the present invention. As shown in the drawings, the apparatus of the present invention is mainly disposed at upper and lower portions in the vertical direction of the strip 10, A scale hood part (A) interlocked by an amount of upward and downward movements of the scale to suck and suck the scale on the surface of the strip; And a scale removing unit (B) for separating and removing the scale removing unit.

Next, the construction of the scale hood portion A will be described in detail with reference to FIGS. 3 to 6. FIG.

FIG. 3 is a sectional view showing the scale hood portion, FIG. 4 is a perspective view showing the upper hood of the scale hood portion, and FIG. 5 is an exploded perspective view showing the upper hood of the scale hood portion. 6 is an exploded perspective view showing a scale adsorption drum of the scale hood portion.

As shown in the figure, the scale hood portion A for sucking and sucking the scale is disposed between the pressure roll 2 (shown in Fig. 2) and the inlet separator roll 5 (shown in Fig. 2) of the rolling process line The scale hood portion is composed of an upper hood (a) positioned on the upper surface of the strip (10) and a lower hood (b) located on the lower surface of the strip. At this time, the upper and lower hoods (a, b) have the same structure.

Therefore, only the upper hood (a) will be described below.

The upper hood (a) is composed of a body cover (100) and a side cover (150) integrally coupled to the body cover through fastening means. The body cover has a duct connection hole (100a) And one bearing block coupling hole (Hole) 150a and four bearing coupling holes 150c are formed in the cover.

A scale adsorption drum (110) is installed in the upper hood (a) composed of a combination of the main cover and the side cover, and a semispherical body (115) made of a magnet is fastened to the inside of the scale adsorption drum A bearing 120b inserted into the inner diameter of the scale adsorption drum 110 and a washer 120a are provided on both sides of the magnet halves fixed shaft 120. The bearings 120b, A bearing block 120c coupled to the fixing plate 120d is provided through a fastening means so that only the scale adsorption drum can be rotated.

The bearing block is engaged with the bearing plate coupling hole 150a of the side cover 150 together with the fixing plate.

At this time, a buffer spring 150b is installed in the bearing coupling hole to buffer the scale adsorption drum when it touches the surface of the strip.

A first brush roll 101a is provided on the upper part of the scale adsorption drum 110. Guide rolls 103a and 103b are provided on the left and right sides of the scale adsorption drum, And a second brush roll 101b is provided between the rolls 103b.

As shown in FIG. 5, on both sides of the first and second brush rolls 101a and 101b and the two guide rolls 103a and 103b (not numbered), bearings And the shaft ends of the first and second brush rolls pass through the bearings and are fixed to the outside of the side cover 150 153a, 153b (not numbered).                     

A cylinder 130 is provided at an upper portion of the main cover 100 of the upper hood a so that the hood portion can be moved up and down by an amount of up and down of the strip. And a duct 104 connected to the bellows pipe 105 is coupled to the duct connection hole 100a formed in the main cover.

Next, the scale removing unit B will be described as follows.

FIG. 7 is a perspective view showing the scale removing unit, FIG. 8 is a perspective view showing a dust collecting tank of the scale removing unit, and FIG. 9 is an exploded perspective view showing a disk and a scraper installed in a dust collecting tank of the scale removing unit. FIG. 10 is a cross-sectional view showing a disk provided in a dust collecting tank of the scale removing unit, and FIG. 11 is an exploded perspective view showing a screw casing of the scale removing unit.

As shown in the drawing, the scale removing unit B includes a dust collecting tank 200 having a lid 200a formed thereon and a casing 300 in which a screw 350 is installed.

First, the dust collecting tank will be described in detail as follows.

A first shaft 201, which is formed by spline bosses 201a, is installed at the inner center of the dust collecting tank 200, and a second shaft 201, which extends to the outside of the dust collecting tank, A plurality of disks 210 are fixed on the first shaft 201 at regular intervals. At this time, the second shaft extends outwardly through a center hole formed in a lower portion of the dust collecting tank and a center hole (not shown) formed in the lid 200a.

The disc 210 is formed of a first disc 211 integrally formed with a fixed boss (not numbered), and a second disc 212 coupled to the first disc by fastening means. At this time, the first and second discs are formed with the same holes 211a and 212a, respectively, which are in the form of crescent moon that smooth the flow of the fluid, and the second disc 212 has a flat top surface and concavo- (Shown in Fig. 10) is formed.

A part of a semicylindrical scraper 230 is positioned between the disk and the disk fixed at a predetermined interval on the first shaft 201. The scraper is fastened to the left inner surface of the dust collecting tank with bolts Is supported horizontally by means of a support 231 fixed by means such that a part thereof is positioned between the disk and the disk. In more detail, the second disk 212 is disposed between the disk and the disk, and is disposed at a position where the second disk 212 can contact the lower surface of the second disk 212. At this time, the number of the scrapers is equal to the number of the discs.

The scraper thus formed is provided with a concave / convex portion 230a (shown in Fig. 14) opposite to the shape of the concave / convex portion 212b formed on the lower surface of the second disk 212. [

A bearing 203 is inserted into the distal end of the second shaft 202 which is coupled to the first shaft 201 and extends to the outside of the dust collecting tank. And the upper end of the second shaft is coupled with the coupling 203a on the axis of the motor 205 fixed on the lid 200a of the dust collecting tank by the support plate 205a, Lt; / RTI >

An air outlet 200b is formed on one side of the lid 200a of the dust collecting tank so that clean air can escape. An air inlet 200b 'is provided on one side of the lower part of the dust collecting tank, .

A support boss 200c is integrally coupled to an opposite side of the air inlet formed at the lower portion of the dust collecting tank. A support guide 200e coupled with a spring 200d is connected to a lower portion of the support boss, The lower portion of the guide is linked to the fixing body 200f by a pin 200f '.

In addition, a touch bar 207 and a weight sensing limit switch 208 are installed under the dust collecting tank to sense the weight.

Next, the casing 300 in which the screw 350, which is another component constituting the scale removing unit B, is installed will be described in detail as follows.

A screw shaft 350a is installed at an inner center of a casing 300 installed on one side of the dust collecting tank 200 and communicated with the inside of the dust collecting tank, a screw 350 is installed on the screw shaft, A cylinder (301) having a scale outlet (301a) is integrally coupled to the upper portion of the casing.

The screw shaft 350a extends outwardly through a center hole (not numbered) formed in a lower portion of the casing and a center hole (not numbered) formed in the cylinder 301. [

A bearing 301b is inserted into a distal end of the screw shaft extending to the outside of the casing and the upper end of the screw shaft is coupled to a shaft of a motor 310 fixed to the cylinder 301 by fastening means 301c ).

The upper and lower side surfaces of the casing are provided with two pairs of support rods 305a and 305b having holes of the connection pins 305a 'and 305b', respectively.

At this time, a rod arm 320a of a cylinder 320 capable of adjusting the inclination of the dust collecting tank 200 is connected to the upper support 305a by the connection pin 305a ' Is linked to fixture 306 by pin 305c '.

A support arm guide 307a is connected to the lower support arm 305b by a pin 305b 'and a support arm guide 307 having a spring 307b inserted therein is connected to a lower portion of the support arm, The lower portion of the support guide is linked to the fixing body 308 by a pin 307c '.

Hereinafter, an operation of the descale apparatus of the present invention will be described with reference to the accompanying drawings.

As shown in Figs. 2 to 4, first, as a function of the scale hood portion A of the present invention, the strip 10 is taken out of the feel reel 3 and passed through the inlet side separator roll 5 to the rolling roll 7a and 7b to form a predetermined tension, each of the cylinders 130 mounted on the upper and lower hoods a and b receives the tensile force.

The upper hood a is lowered to touch the upper surface of the strip 10 by the operation of the cylinder 130 while the lower hood b is raised to touch the lower surface of the strip. At this time, the main cover 100 of the hoods (a, b) is prevented from touching the strip by the guide rolls 103a, 103b.

The first and second brush rolls 101a and 101b provided in the upper and lower hoods are previously rotated by the motors 153a and 153b in response to the initial operation signal of the cylinder 130 have.

Accordingly, the scales separated by the pressure roll 2 by the rotating upper and lower first brush rolls 101a are scattered in the primary direction, and then the scoops of the hoods a, b It is sucked by the vacuum force.

5 to 9, when the scale adsorption drum 110 rotates according to the traveling speed of the strip 10, the magnet half-body is fixed while maintaining a constant angle within the scale adsorption drum The upper scale adsorption drum is formed with a certain magnetic force by the magnet halves 115 fixed on the shaft 120 and the lower scale adsorption drum has a constant magnetic force formed thereon.

Therefore, the scale released by the pressure roll 2 (shown in FIG. 2) is adsorbed on the surfaces of the upper and lower scale adsorption drums 110.

The scale adsorbed on the surfaces of the upper and lower scale adsorption drums rotate together as the scale adsorption drums rotate. As the scale adsorption drums rotate away from the fixed magnet halves 115, The second brush rolls 101b are rotated to separate the scale adsorbed on the surface of the scale adsorption drum from the surface of the drum and the separated scale is separated from the surface of the drum by the dust collection And is discharged to the dust collecting tank 200 of the scale removing unit B through the duct 104 by the rotation of the fan 1d.

12, the water W is filled in the dust collecting tank 200 of the scale removing unit B by a predetermined level and the dust collecting tank is connected to the cylinder 320 and the support guide 200e, And the disk 210 in the dust collecting tank is rotated by the motor 205 at the upper part.

At this time, the scale collected at the scale hood portion by the dust collecting fan 1d flows into the dust collecting tank 200 through the suction line IN and the discharge line OUT. In this situation, the collected air D containing fine scale tends to form air bubbles (the principle that air bubbles are formed when the water in the water cup is blown by the straw) and moves to the upper portion of the dust collecting tank 200.

However, the bubble collides with the rotating disk 210, and thus the scale contained in the bubble is attached to the second disk 212 made of the magnet under the disk. This is shown in Fig.

Since the crescent shaped holes 211a and 212a (shown in FIG. 9) are formed in each disk 210, the fluid flows smoothly in the dust collecting tank 200, The disk on the upper side is formed on the right side and the disk on the lower side is formed on the left side so as to be symmetrical with each other, and the bubbles also rotate according to the smooth flow of the rotating fluid, And the lower surface of the second disk 212 made of the magnet under the disk 210 forms the irregular portion 212b so that the contact area with the fluid becomes larger, The flow velocity to pass toward the larger area becomes faster.

At the same time, as the frictional resistance of the fluid also increases, the bubbles collect on the lower portion of the disk, that is, on the second disk 212, where the flow velocity is faster.

As a result, the bubbles have an enhanced contact force with the magnet, which is the second disk, thereby maximizing the scale collection efficiency in the bubbles.

When the bubbles pass through the crescent shaped holes 211a and 212a formed on one side of the disk 210 as shown in FIG. 14, the air bubbles D containing the scale are separated into clean air S And is discharged through the air outlet.

The scale attached to the lower part of the disk 210 is separated by the scraper 230 installed at one side of the dust collecting tank 200 and collected toward the casing 300 where the screw 350 is located. As shown in FIG. 15, the scraper 230 has a constant angle .theta.2 so that when the disc 210 rotates, the scale is pushed toward the casing 300 and is released.

Because the first shaft 201 and the second shaft 202 of the disk 210 are spline coupled to each other, due to the force of the shaft of the disk being lowered due to the weight of the disk 210, Is always in close contact with the scraper 230. Accordingly, the scale attached to the magnet of the second disk can be efficiently detached.

In addition, as the dust collecting tank 200 inclines at a predetermined angle, the separated scale naturally flows toward the casing 300.

As the scale removing apparatus of the present invention repeats the above operation, when the scale of the dust collecting tank 200 becomes heavy and the weight of the dust collecting tank becomes heavy, the touch bar 207 installed at the lower part of the dust collecting tank 200 12), and the cylinder 320 is operated by the weight detection signal to detect the inclination of the dust collecting tank 200 (see FIG. 12) and the weight detecting limit switch 208 And then the scale motor 310 is operated to rotate the screw 350 in response to the operation completion signal of the cylinder, and the scale is discharged to the outside through the scale outlet 301a.

When the weight of the dust-collecting tank 200 becomes light due to the discharge of the scale, the cylinder 320 operates in the reverse direction to return the inclination of the dust-collecting tank 200 to the initial position.

16 is a flowchart showing an operation relationship of the descale apparatus of the present invention.

As described above, according to the scale removing apparatus of the present invention, it is possible to achieve miniaturization of the apparatus, and environmental pollution can be prevented by discharging the air containing the scale with liquefied air. As a result, Damage and deterioration of the product quality can be prevented.

Claims (3)

The scale hood portion A provided between the pressure roll 2 and the separator roll 5 is disposed in the cylinder 130 so that the scale 130 is separated from the surface of the strip of the rolling process. (A) and a lower hood (b) having the same structure in which a duct 104 provided with a dust-collecting fan 1d is connected to the scale hood portion A by driving of the scale hood portion A, The rejection B is constituted by a dust collecting tank 200 and a casing 300 in which a screw 350 is installed and a magnet half body 115 is integrally coupled to the upper and lower hoods, A first brush roll 101a installed on the upper side of the scale adsorption drum and rotated by a motor 153a, a second brush roll 101b provided on the left side of the scale adsorption drum, Guide rolls 103a and 103b respectively installed on the right side and the scale adsorption drum A second brush roll 101b provided between the right side guide roll 103b and rotating by a motor 153b is provided and the air D containing minute scale is connected to the dust collecting fan 1d, The dust collecting tank 200 having an air inlet 200b 'flowing through the scale hood A and an air outlet 200b through which clean air S from which fine scale is removed is discharged to the outside of the dust collecting tank 200 A first disk 201 having a first shaft 201 which is extended and spline-coupled with a second shaft 202 rotated by a motor 205, a first disk 211 having a crescent shaped hole 211a formed on one side thereof, And a second disk 212 having a hole 212a having the same shape as a hole of the second disk 212 and having a hole 212a formed on one side thereof and fixed to the first disk 210. A plurality of disks 210, And a semicylindrical scraper contacting the surface of the second disk ( The casing 300 is installed on one side of the dust collecting tank 200 and communicates with the inside of the dust collecting tank so as to be installed on the screw shaft 350a, A cylinder 320 capable of adjusting the inclination of the dust collecting tank 200 is connected to a supporter 305a formed on an upper side of the casing and a supporter 305b And a support guide 200e linked to the fixing body 200f is connected to the lower side of the dust collecting tank 200 Characterized in that the descaling device comprises: The disc according to claim 1, wherein a recessed portion (212b) is formed on a lower surface of the second disc (212), and a recessed portion (212b) formed on a lower surface of the second disc Shaped concave and convex portions 230a are fitted into the concave and convex portions 230a. The scale removing apparatus according to claim 1, wherein a touch bar (207) and a weight sensing limit switch (208) are provided under the dust collecting tank (200) to sense the weight of the dust collecting tank.

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