JPH09267107A - Dewatering device for roll of rolling mill - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a dewatering device for surely removing water on a roll surface by costituting the device of a main roll which is rolled in direct contact with a work roll and plural subrolls which are arranged in series and successively dependently rotated by the rotation of this main roll. SOLUTION: A frame 3 is arranged inclining it so that the position of the subroll 2b in contact with the main roll 2a is higher than the position of the main roll 2a in contact with the work roll 1a. When the work roll 1a is dewatered, first, dewatering is executed with the main roll 2a, dewatered water is upward lifted with the adjacent subroll 2b and, furthermore, successively lifted with the subroll 2c. Excess water is discharged from roll sides between the work roll 1a and the main roll 2a, between the main roll 2a and the subroll 2b and between the subrolls 2b, 2c, and, simultaneously, the water is dropped down from the final stage of the subrolls. The dropped water is collected with a cobble guard 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll drainer for a rolling mill such as a cold rolling mill or a skin pass mill, which removes moisture adhering to the surface of the roll.

[0002]

2. Description of the Related Art In cold rolling mills, skin pass mills and the like, it is essential to arrange a water draining device because it is necessary to prevent the roll cooling water from dripping on the plate at its exit side. is there. In this regard, conventionally, for example, as shown in FIG. 1, a sealing material S made of a material such as felt is used.
A contact-type sealing device that presses against the surface of the work rolls 1a, 1b, a non-contact type device that provides a minimal gap facing the work roll surface and injects gas with a pneumatic spray to seal the gap. Alternatively, a vacuum type device for sucking water on the roll surface has been adopted. (See JP-A-2-41710)

[0003]

By the way, the above conventional drainer has the following problems and there is room for improvement. (1) Contact-type seal-type drainer: Since the seal material comes into contact with the roll surface, scratches are likely to occur on the roll surface and the quality of the plate is adversely affected. Draining failure will occur soon. (2) Non-contact seal type water draining device: It is difficult to maintain the minimum gap between the roll surface and the roll surface for a long time. (3) Vacuum drainer: The equipment cost and maintenance cost are high, and a large space is required to install the device.

An object of the present invention is to propose a roll water draining device capable of solving the problems of the above-mentioned conventional techniques, and particularly a water draining device capable of surely removing water on the roll surface. To do.

[0005]

DISCLOSURE OF THE INVENTION The present invention is an apparatus provided with a draining roll which comes into contact with a work roll of a rolling mill and rolls in accordance with the rotation of the work roll. A roll drainer for a rolling mill, which comprises a main roll that rolls in direct contact with a work roll of the rolling mill and a plurality of sub-rolls arranged in series that are sequentially driven and rotated by the rolling of the main roll. .

As the water draining device having the above-described structure, a frame in which a main roll and a sub roll are slidably installed toward a roll of a rolling mill, and a work of a rolling mill by sliding the main roll and the sub roll in the frame It is preferable to have a structure having an air cylinder that is pressed toward the rolls, and it is preferable to use rubber rolls as the main roll and the sub rolls.
Advantageously adapted to the invention.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, a main roll that comes into contact with a work roll of a rolling mill and rolls, and a plurality of sub rolls that come into contact with the main roll and are driven to rotate are arranged to drain water. Therefore, effective drainage can be performed by providing a receiving pan (cobble guard) under the sub-roll for collecting drained water.

Since the main roll is kept in pressure contact with the work roll of the rolling mill and can be moved toward and away from the work roll, even if the main roll is worn. The reliable draining can be performed only by adjusting the contact pressure of the roll.

[0009]

FIG. 2 shows the construction of a water draining device according to the present invention. Numbers 1a and 1b attached to this figure are work rolls of a rolling mill, 2 is a drainer, and this drainer is a main roll (squeezing roll) that directly contacts and rolls along the axial direction of the roll cylinder of the work roll 1a. Roll) 2a
And the sub rolls 2b. 2b., Which are arranged in series in a direction in which they are close to and away from the roll body surface, and which are sequentially driven and rotated by the rolling of the main roll 2a and are arranged in series. 2c.

Further, 3 is a frame in which the main roll 2a and the sub-rolls 2b and 2c are slidably incorporated toward the work roll 1a of the rolling mill, and 4 is an air cinder.
~ 2c bearing box B ₁ ~ B ₃ together with work roll 1
Press toward a. Reference numeral 5 is a slide box for moving the frame 3 itself, 6 is an air cylinder for moving the frame 3 in the slide box 5, 7 is a cobble guard, 8 is a rolling oil header, and 9 is a roll cooling water header.

In order to drain the work rolls of the rolling mill using the water draining device constructed as described above, first, the main rolls 2a are brought into contact with the main rolls 2a rather than the positions of the main rolls 2a which come into contact with the work rolls 1a. Subroll 2
The frame 3 is inclined and arranged so that the position of b becomes high.

When the work roll 1a is drained, the water (coolant water) adhering to the work rolls 1a and 1b is first drained by the main roll 2a, and the water drained here is further dried by the sub roll 2b adjacent thereto. The sub roll 2c and the sub roll 2c are lifted one after another. As a result, excess water is absorbed between the work roll 1a and the main roll 2a, between the main roll 2a and the sub roll 2b, or the sub roll 2a. While being discharged from the roll side between 2b and 2b, it will be spilled from the final stage of the sub-roll. The extra water that has spilled is collected by the cobble card 7 (water receiving pan) and is discharged outside the both width ends of the plate, so that no water droplets drop on the plate surface.

FIG. 3 shows only the draining device according to the present invention.
Show and show. Therefore, the draining device (main
Rubber rolls with a diameter of 150 mm
Arrangement) of the work rolls in the cold rolling mill
Drained. However, the work load of this cold rolling mill
With a diameter of 550 mm and a high speed of 2800 mpm (max),
The flow rate of the coolant is 40 l / min, and
Line pressure of 10kgf / cm ^TwoAnd

As a result of this execution, the maximum plate width of the plate passed through the rolling mill was 1000 mm. Therefore, when the cobble guard for receiving the drained water was 1500 mm and the center thereof was made to be convex, water was drained on the surface of the plate. There was no such thing as a rattling.

[0015]

As described above, according to the present invention, a contact type multi-stage roll is used as a drainage device for the coolant of the rolling mill, especially for cooling the work roll. Is gone. Conventionally, when drainage failure occurs, water drips onto the board, resulting in dirt on the board surface, poor elongation and poor shape (50 ton /
However, in the present invention, deterioration of quality due to defective drainage was eliminated. Further, since the structure of the device is not complicated and the size thereof is not so large, the installation space of the device does not become a problem.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a conventional type draining device.

FIG. 2 is a diagram showing a configuration of a water draining device according to the present invention.

FIG. 3 is an explanatory diagram of an operating state of the water draining device according to the present invention.

[Explanation of symbols]

1a Work roll 1b Work roll 2 Drainer 2a Main roll 2b Sub roll 2c Sub roll 3 Frame 4 Air cylinder 5 Slide box 6 Air cylinder 7 Cobble guard 8 Rolling oil header 9 Roll cooling water header B ₁ ~ B ₃ Bearing box S Sealing material

Claims (3)

[Claims] 1. An apparatus comprising a draining roll which comes into contact with a work roll of a rolling mill and rolls in accordance with the rotation of the work roll, wherein the draining roll of this device directly contacts the work roll of the rolling mill. A roll drainer for a rolling mill, comprising a main roll that rolls in a rolling manner and a plurality of sub-rolls that are arranged in series and sequentially driven and rotated by rolling of the main roll. 2. A frame having a main roll and a sub roll slidably installed toward a work roll of a rolling mill, and an air cylinder for sliding the main roll and the sub roll in the frame to press the work roll of the rolling mill. The device according to claim 1, characterized in that 3. The apparatus according to claim 1, wherein the main roll and the sub roll are both rubber rolls.