KR200215184Y1 - Apparatus for fencing work roll for strip rolling from high pressure water - Google Patents

Abstract

The present invention relates to a high pressure water cutoff device for a work roll for rolling steel sheet, and its purpose is to provide a braid installed between the work roll chocks to expand and contract automatically in an inclined state according to the work interval of the work roll. It is to effectively block the ejection to the lubrication line.

Therefore, in order to achieve the above object, the present invention, the upper and lower work rolls 10, 20 is installed and the choke between the work roll upper and lower choke 12, 22 is mounted to the backup roll choke. A braid 30 is provided to prevent mixing of the high pressure cooling water into the lubrication line on the work roll spindle side through the choke 12, 22 gap while shrinking and expanding according to the interval of (12) and (22). , The braid 30 provides a high-pressure water blocking device of the work roll for rolling steel sheet is configured to be inclined to effectively block the high-pressure water sprayed on the work roll (10) (20).

Description

High Pressure Water Breaker for Work Roll for Steel Plate Rolling {APPARATUS FOR FENCING WORK ROLL FOR STRIP ROLLING FROM HIGH PRESSURE WATER}

The present invention is designed for rolling steel plate to prevent the high pressure cold water from being spouted into the choke gap of the work roll to roll the material during hot rolling operation and preventing it from being mixed in the work line's lubrication return line. A high pressure water cut-off device of a work roll, in particular, is a braid installed between the work roll chocks to expand and contract automatically in an inclined state according to the working interval of the work roll, and the high pressure water is discharged through the choke to the lubrication line side. It relates to a high pressure water cut-off device of a work roll for rolling a steel plate effectively.

In general, during hot rolling, as shown in FIG. 1, upper and lower backup rolls 110 and 120 are installed as chokes 112 and 122, and work rolls are provided at upper and lower portions of the backup roll chocks. Between the chokes 132 and 142 are installed work rolls 130 and 140 for rolling a material (blade) to be transported to manufacture the hot rolled steel sheet, and a plurality of such work rolls 130 and 140 are provided. When the material passes through the installed rolling mill, the cooling water is sprayed at a high pressure of approximately 210 kg / cm 2 to prevent damage of the work roll and the backup roll due to high heat.

On the other hand, when the material is rolled, depending on the thickness of the material, but as shown in Figure 2, the gap between the upper and lower work rolls 130, 140 as much as the material (actually as much as the rolling width) is to be opened In the end, the high-pressure cooling water is ejected into the gap between the gaps of the work roll chocks 132 and 142, and flows toward the part of the spindle 150 that enables the work rolls 130 and 140 to operate. Will be incorporated into the lubrication line 160 for.

Therefore, the conventional high-pressure hot water is mixed with the lubrication line during hot rolling, thereby deteriorating the lubricating oil and deteriorating the lubricating oil. This increases the use of the lubricating oil, thereby providing a load on the wastewater treatment system of the waste lubricant. Eventually, the cost increases due to the increase of chemicals due to wastewater treatment. Especially, the lifespan of the peripheral equipment by the cooling water is shortened or damaged easily, which increases the maintenance cost of the equipment. There were various problems such as making.

The present invention has been made in order to improve the various problems as described above, the purpose of the high-pressure water choke as a braid is installed to expand and contract automatically inclined state in accordance with the working interval of the work roll between the work roll choke It is to provide a high-pressure water blocking device of the work roll for rolling steel sheet to effectively block the ejection to the lubrication line side past.

1 is a schematic side view showing a weak roll for rolling a general steel sheet

Figure 2 is a schematic diagram showing that the high-pressure cooling water flows to the lubrication line side through the choke of the conventional work roll rolling

Figure 3 is a front view showing a high pressure water cutoff device of the work roll for rolling steel sheet according to the present invention

4 is a main structural diagram showing a high-pressure water cutoff device of the present invention rolling work rolls

Figure 5 (a) and (b) is a schematic front view showing a self-operating state of the high pressure water cutoff device of the work roll for rolling steel sheet according to the present invention

Figure 6 (a) and (b) is a perspective view of the main part and side view showing the braid connection structure of the high-pressure water cutoff device of the work roll for rolling steel plate of the present invention

Explanation of symbols on the main parts of the drawings

1 .... High pressure water shutoff device 10,20 .... Up and down work roll

12,22 .... Work roll choke 30 .... Braid

32 .... Spring 34 .... Post

34a, 34b .... stopper 36 .... wire

38 ... housing 40 ... sealing plate

42 .... Fixed creep

As a technical configuration for achieving the above object, the present invention, in the rolling work roll, the gap between the choke between the upper and lower work chocks, the upper and lower work rolls are installed and mounted to the backup roll choke. And a braid installed to prevent the high pressure cooling water from being mixed in the lubrication line on the work roll spindle side through the choke gap, while the braid is inclined to effectively block the high pressure water injected into the work roll. By providing a high-pressure water cutoff device of the work roll for rolling steel sheet.

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

Figure 3 is a front view showing a high pressure water cutoff device of the work roll for rolling steel plate according to the present invention, Figure 4 is a main structural view showing a high pressure water cutoff device of the work roll for rolling steel plate according to the present invention, a) and (b) is a schematic front view showing the self-operating state of the high-pressure water cutoff device of the steel roll work roll of the present invention, Figure 6 (a) and (b) of the steel roll work roll of the present invention Main part perspective and side views showing the braid connection structure of the high-pressure water cutoff device.

3 shows a high-pressure water cutoff device 1 of a work roll for rolling a steel plate according to the present invention. The device 1 is equipped with upper and lower work rolls 10 and 20 and mounted to a backup roll choke. Lubrication on the work roll spindle side through the gaps of choke 12 and 22 while high pressure coolant shrinks and expands according to the gaps between the chokes 12 and 22 between the upper and lower chokes 12 and 22 of the work roll. It is provided with a braid 30 that is installed to prevent mixing in the line.

3 and 4, the braid 30 is a post 32 installed on the upper and lower sides of the upper and lower work roll chokes 12 and 22 as springs 32 installed on both sides. 34 passes through the left and right sides, and wires 36 connected to the upper and lower sides of the post 34 are connected to the front and rear sides of the left and right ends, respectively, so as to contract and expand according to the movement of the post 34.

The upper stopper 34a fixed to the fixing groove 12a formed in the upper choke 12 is screwed to the upper end of the post 34, and the lower choke 22 to the lower end of the post 34. The lower stopper 34b is inserted into and fixed to the fixing groove 22a formed in the upper surface of the housing 38, and the lower stopper 34b is in close contact with the spring 32. The upper and lower chokes 12, 22 are moved up and down according to the spaced state.

4 to 6, square holes 34c through which the post 34 communicates with through holes 34d through which the wire 36 communicate with each other are integrally formed at both ends of the braid 30. The braid 30 and the wire 36 have a plurality of braids formed on the wires 36 by fixing pins 42 having a straight fixing groove 42a having a diameter smaller than the diameter of the wires 36, respectively. 30 is connected and fixed, the braid 30 is adjusted to the fixed interval with the wire 36, the braid 30 is installed to be inclined to effectively block the high-pressure water sprayed to the work rolls 10, 20 It consists of the configuration.

Referring to the operation and effects of the present invention made in the above configuration in more detail as follows.

3 to 6, the high pressure cooling water sprayed on the upper and lower work rolls 10 and 20 when rolling the raw material (blade) in the rolling mill, the upper choke 12 and the lower choke 12, 22 The high-pressure water cutoff device 1 of the steel roll rolling work roll of the present invention to prevent contamination of the lubrication line of the spindle (not shown) that is ejected into the gap to operate the work rolls 10 and 20 is as follows. .

First, the upper and lower work rolls, which are rolled down as a backup roll (not shown) and roll the material, are installed and mounted on the choke of the backup roll, and the upper and lower chocks of the work roll are integrally adjusted. Fixing grooves 12a and 22a are formed on the left and right sides of the (12) and (22), respectively.

Therefore, the upper stopper 34a fixed by the screw method is fixed to the fixing groove 12a of the upper choke 12 by the upper end of the post 34 to be described later, and the fixing groove of the lower choke 22 is fixed. A cylindrical housing 38 having a predetermined length, that is, a length through which the post 34 can flow in the vertical direction, is seated and fixed to the 22a.

At this time, as shown in Figure 4 and 5, the lower stopper 34b is fixed to the lower portion of the post 34 by a screw method is inserted into the inside of the housing 38, the inside of the housing 38 The spring 32 is mounted so that the lower stopper 34b of the post 34 is in close contact with the upper side of the spring 32.

Meanwhile, as shown in FIG. 4, the post 34 inserted into the housing 38 is inserted into the housing 38 through a sealing plate 40 fixed to seal the upper opening of the housing 38. .

As a result, the two posts 34 are respectively installed in the vertical direction on both the left and right sides of the upper and lower work roll chokes 12 and 22, so that the rolling interval of the raw material during rolling is adjusted according to the upper and lower chokes 12. According to the interval of 22, the post 34 is lowered to contract the spring (32).

On the other hand, as shown in Figure 6, before the post 34 is installed between the chokes, first, the plurality of braids 30 while inserting the posts 34 through the square holes 34c formed at both ends of the braid 30. ) Is installed so as to move the post 34 up and down on the axis, which will be described in detail later, but since the braid 30 is installed to be inclined, the square hole 34c is larger than the cross-sectional area of the post 34. It must be formed.

Next, as shown in FIGS. 5 and 6, the post 34 is formed in the through hole 34d integrally formed at the front and rear sides of both ends of the braid 30 having the frost 34 inserted into both sides. After inserting the upper and lower wires 36, the upper and lower ends of which are fixed to the upper stopper 34a and the sealing plate 40 of the housing 38, the two fixed creps (2) above and below the braid (30). 42) to secure several braids 30 to the wires 36.

At this time, the wire 36 is formed of a wire made of a fiber material slightly larger in diameter than the fixing groove 42a formed at one side of the fixing creep 42 so that the fixing crepe 42 is firm and simple. It is possible to fix the braid 30 to the wire 36 by inserting in the main body, and the important thing is that the braid 30 rises in the chocks 12 and 22 and the post 34 rises, that is, the gap between the chokes is large. The spreading braid 30 is to be inclined as much as possible.

That is, the gap between the braids 30 is narrowed inside the choke of the braid 30 fixed to the wire 36 as the fixed crepe 42, and on the opposite side, the gap between the braids 30 is widened so that the post 34 When the choke opens and rises to the elasticity of the spring 32, the braid 30, which is unfolded by the wire 36 that is pulled integrally, is inclined so that the choke inside faces downward.

5 and 6, the high-pressure cooling water is effectively blocked by the overlapping braids 30 inclined while being ejected through the choke gap so that the braids 30 as in the present invention are not installed. In the conventional case, the high-pressure coolant is easily blocked from entering the lubrication line on the spindle side.

On the other hand, in the device 1 of the present invention, by simply fixing a plurality of braid 30 to the wire 360 as a fixed creep 42, the replacement work according to the breakage of the braid 30, if necessary, as well as easy In particular, it is easy to install inclined or installation work of the braid 30 according to the size of the upper and lower work roll choke 12, 22.

As described above, according to the high-pressure water cutoff device of the work roll for steel sheet rolling, the braid is installed to expand and contract automatically in the inclined state according to the working interval of the work roll between the work roll chocks. There is an advantage that effectively blocks the ejection to the line side.

Therefore, the contamination of the lubrication line by the high-pressure cooling water is blocked and the amount of lubricating oil is kept constant, which is an excellent effect of preventing additional cost increase due to the maintenance of waste water treatment system or equipment.

While the subject innovation has been shown and described with respect to specific embodiments, it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit or scope of the subject innovation as provided by the following claims. I would like to clarify that knowledge is easy to know.

Claims (4)

In the work roll for hot rolling, The upper and lower work rolls 10 and 20 are installed and contracted and expanded according to the gaps of the chokes 12 and 22 between the upper and lower chokes 12 and 22 of the work rolls mounted on the backup roll chocks. And a braid 30 which is installed to prevent the high pressure cooling water from being mixed in the lubrication line on the work roll spindle side through the choke 12, 22 gap, The braid 30 is a high pressure water cutoff device of the work roll for rolling steel sheet, characterized in that the inclined to effectively block the high pressure water injected to the work roll (10, 20) According to claim 1, wherein the braid 30 is a spring 32 that is installed on both the left and right sides of the upper and lower work roll choke 12, 22, the post 34 is installed so as to flow up and down to the left and right sides. And the wires 36 connected to the upper and lower sides of the post 34 are connected to the front and rear portions of the left and right ends, respectively, so as to be contracted and expanded in accordance with the movement of the post 34. High Pressure Water Cutoff Device of Roll The upper stopper (34a) is fixed to the upper end of the post 34, the fixing groove (12a) formed in the upper choke 12, the lower end of the post (34) A lower stopper inserted into and fixed in the fixing groove 22a formed in the choke 22 and inserted through the upper sealing plate 40 of the housing 38 in which the spring 32 is mounted inwardly and in close contact with the spring 32 ( 34b) is fixed and the high-pressure water cutoff device of the work roll for rolling steel sheet, characterized in that it is configured to move up and down according to the spaced state of the upper and lower chokes (12, 22) According to claim 2 or 3, wherein both ends of the braid 30 is formed with a rectangular hole (34c) through which the post 34 communicates with a through hole (34d) through which the wire 36 communicates, respectively. The braid 30 and the wire 36 have a plurality of braids 30 attached to the wires 36 by fixing pins 42 having a straight fixing groove 42a having a diameter smaller than the diameter of the wires 36, respectively. Is connected and fixed, the braid 30 is a high-pressure water cutoff device of the work roll for rolling steel sheet, characterized in that it is installed to be inclined by adjusting a fixed interval with the wire 36