KR20020016017A - Brushing device for cleaning the surface of casting roll - Google Patents

Abstract

PURPOSE: A brushing device for cleaning the surface of casting rolls in a twin roll strip caster is provided to prevent contamination of the casting rolls due to contaminants stuck to the brushes by removing the contaminants stuck to stainless steel brushes using a high pressurized air ejected through an air passage and air holes formed inside a brush roll. CONSTITUTION: The brushing device for cleaning the surface of casting rolls in a twin roll strip caster comprises brush resting parts(30) which are arranged on the outer circumferential surface of a brush roll(20); air ejection means(40) which are formed so as to remove contaminants stuck to the brushes(10) by ejecting air to the inner side of the brush resting parts(30) and to the outer side of the brush roll(20); an air diffusion means(50) which is installed at the inner side of the brush resting parts(30) so as to easily remove contaminants of the brushes(10) by diffusing the air ejected to the air ejection means(40); and brushes(10) which are installed at the outer wall of the air diffusion means(50). The brushing device for cleaning the surface of casting rolls in a twin roll strip caster comprises resting parts which are arranged on the outer surface of a brush roll; air ejection means which are formed at the inner side of the brush roll so as to eject air from both sides of the resting parts to the outer side of the brush roll; and brushes which are installed so that the brushes and the air ejection means are alternately arranged on the bottom of the resting parts.

Description

BRUSHING DEVICE FOR CLEANING THE SURFACE OF CASTING ROLL}

The present invention relates to a brushing apparatus for cleaning the surface of the casting roll in a twin roll sheet casting machine for producing ferrous and non-ferrous metals and their alloys directly from the molten metal (STRIP), more specifically, in the outer periphery of the casting roll By forming air passages and air holes in the rolls equipped with brushes of the brushing device installed adjacently, the high-pressure air injected through them removes contaminants attached to the stainless brush, thereby casting rolls due to the contaminants attached to the brushes. The present invention relates to a brush for cleaning the surface of a roll of a twin roll sheet casting machine to prevent contamination in advance.

In general, in the casting method of thin plate, the slab is manufactured by continuous casting method through the tundish of molten steel, the continuous casting method of manufacturing it into thin plate through rolling and finishing operations, and the molten steel is directly added to the rotating twin roll. There is a twin-roll type sheet casting method for directly manufacturing a sheet without rolling and imagining the slab through the latter, the latter can be manufactured directly without going through a number of processes of continuous casting method, a significant cost reduction and process in terms of cost There has been much research in twin roll sheet metal casting method.

Such a conventional twin roll sheet caster is schematically shown in FIG.

That is, as shown in Figure 1, when the molten steel 130 is supplied through the immersion furnace 122 installed below the molten steel storage container 120 between the two casting rolls 110 rotating at a constant speed, supply The molten steel 130 forms a solidification angle while contacting the casting roll 110 to form the cast steel 140 at the roll closest point as the casting roll 110 rotates.

On the other hand, in the conventional sheet casting machine 100 as described above, the scale of oxidation of the molten steel 130, which is a contaminant generated on the surface of the casting roll 110, or the vaporized component in the molten steel is oxidized in the form of MnO. It deposits on a roll surface, and slag etc. which exist in a hot molten steel upper part react with this, and form a hard film.

Thus, as shown in Figure 1, in order to remove the film on the surface of the casting roll 110 as described above, by installing a brush roll 200 in close contact with the roll surface to the outer side of each roll 110, the roll It is to remove the film formed on the surface.

On the other hand, such a brush roll 200 is shown in more detail in FIGS.

That is, as shown in Figures 2 and 3, the brush 230 that is in close contact with the surface of the casting roll 110 through the roll support device 220 to the inside of the suction cover 210 is fixed to the bracket outer peripheral surface The brush roll 200 is installed in the brush roll 200, and thus, the brush 230 of the brush roll 200 removes contaminants such as coatings and the like formed on the surface of the casting roll 110.

However, in the roll roll cleaning brush 200 of the conventional twin roll type sheet casting machine as described above, the brush 230 to clean the contaminants generated on the surface of the casting roll 110, that is, the film (black skin) However, when used for a long time, the above-mentioned contaminants are attached to the brush 230 itself, rather, the casting roll 10 has a problem of being contaminated due to the contaminants of the brush 230.

Meanwhile, another brush roll for avoiding secondary contamination of the casting roll 110 by such a brush 230 is disclosed in European Patent (EP) 0965 402 A1, which is provided with a brush roll in a housing to provide a sealing property. At the same time, by installing the main and auxiliary brush roll to reduce the contamination of the casting roll by the brush.

However, in the brush roll disclosed in the European Patent, there is a problem that the manufacturing and installation cost of the equipment increases considerably due to the complicated structure of installing two brush rolls, and at the same time, the main brush roll in the housing is easily broken.

The present invention has been made in order to improve the various problems as described above as an object of the present invention, by forming an air passage and air holes in the roll mounted with the brush of the brushing device installed adjacent to the outer edge of the casting roll and sprayed through In order to provide a brush for cleaning the surface of a roll of a twin roll sheet casting machine to prevent contamination of the casting roll due to the contaminants attached to the brush by removing the contaminants attached to the stainless brush. have.

1 is a schematic view showing a typical twin roll sheet casting machine

Figure 2 is a schematic front view showing a roll roll brush for cleaning the conventional twin-roll sheet caster

Figure 3 is a schematic plan view showing a brush roll for cleaning the roll surface of a conventional twin roll sheet caster

Figure 4 is a schematic structural diagram showing the air passage and the air hole of the brush brush for cleaning the roll surface of the twin-roll sheet caster according to the present invention

5 is a view illustrating a first embodiment of a brush for cleaning the surface of a roll of a twin roll sheet caster according to the present invention,

a is the exploded view

b is the main structure

Figure 6 shows a second embodiment of the brush brush for cleaning the surface of the roll surface of the present invention twin roll type cast machine,

a is the exploded view

b is the main structure

Explanation of symbols on the main parts of the drawings

1,1 '.... Brushing Machine 10 .... Brush

20 .... Brush roll 30,60 .... Brush seat

40,70 .... Air injection means 50 .... Air diffusion means

The present invention as a technical configuration for achieving the above object, in the brush roll is provided on the outside of the casting roll of the twin-roll type sheet caster and equipped with a brush for cleaning the roll surface, the outer peripheral surface of the brush roll A brush seat formed on the

An air spraying means formed to remove brush contamination by spraying air to the outside of the roll into the seating part;

An air diffusion means installed inside the brush seating portion to expand the air injected into the air spraying means so as to easily remove contaminants of the brush;

By providing a brush for cleaning the roll surface of the twin-roll sheet caster is configured as the brush installed to the outside of the air expansion means.

In another aspect, the present invention is a brushing device provided on the outer edge of the casting roll of the twin-roll sheet-caster having a brush roll to wash the roll surface, the seating arrangement is formed on the outer surface of the brush roll Wealth,

An air injection means formed inside the brush roll so as to jet air from both sides of the seating part to the outside of the roll;

By providing a brush for cleaning the surface of the roll of the twin-roll sheet caster is configured as the brush is arranged in the intersection with the air injection means to the bottom of the seating portion.

Hereinafter, described in more detail with the configuration of the present invention based on the accompanying drawings.

4 is a schematic structural diagram showing an air passage and an air hole of a roll surface brushing apparatus for a twin roll sheet caster according to the present invention, Figures 5a and b are brush surface washing brush for the twin roll sheet caster of the present invention Fig. 1 is an exploded view and a structural diagram showing a first embodiment of the apparatus.

4 and 5 show a brush surface cleaning brush 1 of the twin roll sheet casting machine of the first embodiment of the present invention.

That is, as shown in Figure 4, the union rotary 22a is connected to the neck 22 of the brush roll 20 formed to have a diameter of 200-350mm usually connected to the rotary 22a although not shown in the drawing When the air is supplied at a high pressure, that is, 5 bar or more through an air pipe connected to the air, the air is flowed through the air passage 42 of the air injection means 40 integrally formed through the roll neck 22 and the roll body 24. The high pressure air is penetrated outward from the center of the roll (20).

At this time, the air spray hole 44 to the bottom center of the seating portion 30 is formed in the rectangular groove (GROOVE) shape on the surface of the brush roll 20 to extend in the longitudinal direction along the circumferential direction of the roll (44) Is penetrated.

Therefore, the high pressure air supplied as described above is injected into the outer portion of the roll through the air injection hole 44 of the air injection means 40.

On the other hand, as shown in Figure 5, the seating portion 30, along with the high-pressure air spray, air diffusion means for diffusing the sprayed air along the brush 10 mounted on the roll 20 ( 50) is installed.

That is, in the brush seating portion 30 formed on the surface of the roll 10, a rectangular frame base 52 is mounted by welding (spot welding) or screw method although not shown in detail in the drawing, and at the same time on the base 52 A grid net 56 made of a plate material having a plurality of air diffusion holes 54 for diffusing the air described above is fixedly fixed by welding or the like.

As a result, as described above, the high-pressure air injected from the bottom of the seating portion 30 is spaced at a predetermined interval, that is, approximately 20-25 mm so that the air injection hole 44 gives an installation space of the brush 10 described later. If the high-pressure air through the air diffusion hole 54 of the grid 56 is diffused and strongly collides with the brush 10 to be described later, such high-pressure air collides. Contaminants attached to the brush 10 are removed to prevent contamination of the secondary casting roll 110 due to the contamination of the brush 10.

In this case, the grid net 56 is used as a plate for the purpose of stably searching for the brush 10, and the brush 10 is fixed to the inside of the fixed plate 14 in which a plurality of brush cores 12 are pressed and fixed. The bottom part of () is welded (spot welded) to the grid net 56 at regular intervals via the support plate 16.

Accordingly, according to the first brushing device 1 of the present invention, the high-pressure air through the air injection hole 44 formed to the bottom of the air passage 42 and the seating portion 30 inside the roll 20 It is possible to efficiently remove the contamination of the brush 10 by colliding with the shim 12 of the brush 10 located in front of the diffusion while spraying through the grid diffusion hole 54 of the diffusion means 50.

Next, FIG. 6A and 6B illustrate a roll surface brushing apparatus 1 'for a twin roll sheet caster according to a second embodiment of the present invention, which is characterized by a separate diffusion of the brushing apparatus 1'. Without installing the grid net 56 as a means, the air injection hole 74 of the air injection means 70 is formed to face the brush 10 on both sides of the bottom of the roll seat 60 so that the brush 10 To remove the contamination.

That is, as shown in Figs. 4 and 6, the brushing apparatus 1 'of the second embodiment of the present invention is shown as a separate reference numeral like the first embodiment, but the seating portion 60 having the same configuration is roll 20 Of the high pressure of 5 bar or higher supplied through the passage 72 of the air spraying means 70 formed at the center of the roll neck 22 and the roll body 24, although it is formed on the outer circumferential surface of The air is injected to the outside of the roll through the air injection hole 74 is connected to the air passage (72).

At this time, as shown in Figure 6, the important thing is the air injection hole 74, the air injection hole 74 is formed to face both sides of the bottom of the seating portion, unlike the first embodiment, At the same time, the air hole portion of the roll body 24 is an inclined hole for injecting air from the front and the rear toward the brush 10 in the center, that is, the inclined hole inclined approximately 25 to 35 degrees, preferably 30 degrees. ) To form.

Therefore, the high pressure air supplied through the air passage 72 passes through the air inclined hole 76 and the air injection hole 74 in the center of the bottom of the seating part 60, as in the first embodiment. A plurality of brush cores 12 are pressed inwardly and sprayed at a high pressure toward the brush 10 which is fixedly welded to the bottom of the seating part 60 via a support plate 16 through a fixed plate 14. In other words, contaminants attached to the brush core 12 are efficiently removed while colliding with the brush core 12.

Accordingly, in the brushing apparatus 1 ′, which is the second embodiment of the present invention, there is no separate air diffusion structure as in the first embodiment, but the high pressure air is injected from both sides of the brush 10 so that the brush 10 is removed. In particular, contaminants such as black skin on the surface of the casting roll 10 attached to the brush core 12 may be more completely removed.

Thus, according to the brush surface cleaning brush device of the twin-roll thin plate casting machine of the present invention, by forming the air passage and the air hole in the roll equipped with the brush of the brushing device installed adjacent to the casting roll of the high pressure By removing the contaminants attached to the stainless brush with air, there is an excellent effect of preventing contamination of the casting roll due to the contaminants attached to the brush.

While the invention has been shown and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit or scope of the invention as set forth in the claims below. I would like to know that those who have knowledge of this can easily know.

Claims (6)

In the brushing apparatus (1) having a brush roll (20) mounted on the casting roll (110) of the twin roll type sheet casting machine and mounted with a brush (10) for cleaning the roll surface, Brush seating portion 30 is formed on the outer peripheral surface of the brush roll 20; And, An air spraying means (40) formed to remove the brush contaminants by spraying air to the outside of the roll (20) to the inside of the seating portion (30); Air diffusion means 50 is installed inside the brush seating portion 30 to facilitate the removal of contaminants of the brush 10 by expanding the air injected into the air injection means 30; And, Brush for cleaning the surface of the roll of the twin-roll sheet caster, characterized in that configured as; the brush 10 is installed to the outside of the air expansion means (50) The method of claim 1, wherein the air injection means 40, The air passage 42 penetrates through the neck 22 of the brush roll 20 and the roll body 24 connected thereto, and from the air passage 42 inside the roll toward the outside of the roll. It is configured as a plurality of air injection holes 44 formed through, The air spraying hole 44 is a brush brush for cleaning the roll surface of the twin-roll sheet caster, characterized in that formed at a predetermined interval on the bottom of the brush seating portion 30 The method of claim 1, wherein the air expansion means 50, A grid of plate material provided to form a rectangular frame base 52 coupled to the brush seating portion 30 formed on the surface of the roll 10 and a plurality of air diffusion holes 54 inside the base 50. With net 56, The brush 10 is characterized in that the bottom portion of the fixed plate 14, the plurality of brush cores 12 are pressed and fixed inwardly is coupled to the grid net 56 at a predetermined interval through the support plate 16. Brush surface cleaning brush for twin roll sheet casting machine In the brushing device (1 ') provided with a brush roll (20) installed outside the casting roll (110) of the twin roll type sheet casting machine to wash the surface of the roll. Seating unit 60 is formed on the outer surface of the brush roll 20; And, An air injection means (70) formed inside the brush roll (20) so as to jet air from both sides of the seating portion (60) to the outside of the roll (20); Brush surface cleaning brush for roll surface of the twin-roll sheet caster, characterized in that it is configured as; the brush 10 is arranged to the intersection of the air injection means 70 to the bottom of the seating portion (60) The method of claim 4, wherein the air injection means 70, The air passage 72 is formed through the neck 22 of the brush roll 20 and the roll body 24 connected to the brush roll 20 and the air passage 72 inside the roll toward the outside of the roll. It is configured as a plurality of air injection holes 74 formed through, The air injection hole 74 is formed on both sides of the bottom edge of the brush seating portion 30, and the inclined hole 76 in the inclined hole roll inclined at a predetermined angle to inject air toward the brush 10 in the center thereof. Brush for cleaning the surface of the roll of the twin-roll sheet caster, characterized in that The bottom of the fixing plate 14, in which the plurality of brush cores 12 are pressed and fixed inwardly, is fixedly coupled to the bottom of the seating part 60 via the supporting plate 16. Brush for cleaning the surface of the roll of the twin-roll sheet caster, characterized in that