KR200283258Y1 - Roll Choke Cooling Water Penetration Prevention System - Google Patents

Abstract

The present invention sprays a large amount of coolant to cool the slab when the heated slab crosses the roll table, and roll chocks are rolled out by the hydraulic pressure of the coolant. As the coolant penetrates into the inside and the oil is rapidly emulsified, shortening the life of the bearing, shortening the life of the roll, and grease leak due to the decrease of the viscosity of the grease cause grease to be continuously applied to the roll chock. It is related to a system in which a constant pressure is formed in a roll chock by injection pressurization so that cooling water does not penetrate.

Therefore, the present invention has a cylinder header 13 in which the sealing 14 is fitted inside the cylinder 12, and is installed in such a way that it can flow therein, and is divided into a grease chamber 15 and an air chamber 16 based on the grease chamber. The grease feed port 18 and the discharge port 17 are provided at the end of (15), and are bound to the grease feed hoses (8) and (8 '), respectively, and the air inlet (19) and the opposite end of the cylinder (12) are provided. The cylinder header 13 and the extended shaft 27 are inserted, and the end of the shaft 27 is provided with a point 21 marked with a small scale, and the point 21 in the middle of the protective cover 22 for protecting it. A confirmation window 26 is provided to enable confirmation, and a protective cover 22 having a ruler-shaped gauge 25 on the upper side of the confirmation window 26 is provided with bolt insertion holes 20 at one end of the cylinder 12, respectively. Fixing with bolts 5 provides an integrally constructed device.

With such a device, when grease is supplied to the roll chocks, the grease is pressurized to maintain a constant pressure in the roll choke to prevent the infiltration of cooling water, and the internal pressure generated when the roll expands and contracts due to the heat of the material during rolling. By minimizing grease leakage, it minimizes oil seal life and prevents the infiltration of coolant, significantly reducing grease loss and reducing production cost and cost due to frequent roll choke changes.

Description

Roll choke coolant penetration system

The present invention relates to a roll choke coolant penetration prevention system, and the cooling water into the roll choke by the pressure of the coolant sprayed a lot in spraying the coolant to the heated iron plate, that is, the heated slab after the rolling operation in the hot rolling mill As the grease is rapidly emulsified and the grease is rapidly reduced, the service life is shortened due to the deterioration of lubrication of the bearing, and the maintenance and operating costs such as grease leak due to the lower viscosity of the grease are required. For example, due to the heat of the hot slab that causes high heat, the roll expands and contracts, and as the internal pressure is generated in the roll choke, the forced leakage of grease and the deformation of the oil chamber cause the coolant to penetrate and build up inside the roll choke. Bearings wear out, which leads to enormous loss and defective rate during bearing replacement and production. Therefore, the present invention relates to a device configured to forcibly supply grease to a roll choke to form a low choke pressure so that the cooling water does not penetrate it so that the bearing inside the roll choke can easily perform grease feeding required to rotate. Conventional technology for solving the above problems in the sealing device for blocking impurities flowing into the bearing through the journal portion of the vertical roll for hot rolling as in the application publication 20-1998-0021531 Hot-rolled bearings fitted in the journal section between the shaft-coupled coupling and the rolls are assembled with end plates fixed to the end retainers which are joined to the chokes for fixing the rolls and which support the bearings at equal intervals. In the vertical roll for rolling, an outer shielding film is bonded along the outer surface of the end plate, and the outer blocking film is adhered along the end of the coupling on one side, and the inner shielding film is formed on the other side along the outer peripheral surface of the journal. Concave groove is provided in the connection part for connecting the inner part of the outer barrier membrane for hot rolling with an elastic body embedded therein It is equipped with vertical roll choke sealing device. Such a sealing device is already carried out, but the roll was unable to solve the problem due to friction damage and water pressure of the cooling water during expansion and contraction by heat.

The present invention was devised to solve the above-mentioned problems of the prior art, and when grease is supplied to the roll chocks, the grease is supplied to the roll chocks to maintain a constant pressure so that the cooling water cannot be penetrated, and due to the heat of the material during rolling. A separate grease feed path is provided to disperse the internal pressure generated when the roll undergoes expansion and contraction, minimizes the leakage of grease, and prevents the cooling water from penetrating to extend the life of the oil seal and the bearing. Its purpose is to provide the necessary devices to reduce the inefficiency and thus reduce the defective rate of the product and to solve the difficulties in the field environment improvement.

1 is a perspective view showing the configuration of a conventional roll,

2 is an enlarged view of a portion of A of FIG. 1;

3 is a partially enlarged view showing the configuration of a roll choke according to the present invention,

Figure 4 is a perspective view showing a configuration that is operated in speech with the grease forced feeding device to the roll choke according to the present invention

5 is a perspective view showing a forced feeding device according to the present invention,

6 is a fraud diagram partially crushed the forced feeding device of FIG.

<Description of the code | symbol about the principal part of drawing>

1: roll choke 2: bearing 3: roll

4: Journal part 5: Bolt 6: Grease transport path

7: Nipple 8, 8 ': Greek Feeder Hose

9: valve 10: air stage

11: Grease Pump 12: Cylinder 13: Cylinder Header

14: Sealing 15: Grease Chamber

16: Air chamber 17: Outlet 18: Grease supply zone

19: Air inlet 20: Bolt inlet

21: point 22: protective cover

23: cooling water spray head 24: hot slab

25: gauge 26: confirmation window 27: shaft

In order to achieve the above object, the friction surface of the sealing 14 device and the roll choke 1 inherent in the sealing 14 device to block the coolant inflow between the journal section 4 of the roll 3 and the roll choke 1. The grease feed path (6) is configured to prevent the infiltration of cooling water and to distribute the internal pressure in the low choke (1) by forcibly feeding grease which functions as lubrication to the roll choke to prevent wear.

In general, the slab heated to 1250 ~ 1350 ℃ in the furnace passes through the rough mill (Fire Milling Mill) and finishing mill (Finishing Mill) in order to be rolled into the hot coil desired demand, and also to transport a plurality of rolls ( 3) are installed in a row. Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 to 2 are a perspective view showing the structure of a conventional roll, and a partial enlarged view of A of FIG. 1, in which a plurality of rolls 3 are conventionally spoken as shown in FIG. Supported by the roll choke (1), the hot rolled roll (3) is the cooling water through the cooling water spray header (23) installed upward to prevent the surface temperature rise of the roll (3) during transfer of the hot slab (24) Both sides of the journal section 4, which is the shaft of the roll 3, are configured to reduce the friction of the bearing 2 embedded in the roll choke 1 in which the bearing 2 is inserted and fixed thereto. The nipple (7) is fastened to the grease inlet for supplying the grease.

3 is a partially enlarged view showing the configuration of the roll choke according to the present invention, as shown in FIG. 2, both ends of the journal part 4, which is an axis of the roll 3, are inserted into and fixed to the bearing 2. The nipple (7) is fastened to the grease inlet for supplying grease to reduce the friction of the bearing (2), which is built and rolled in the roll choke (1). The grease injected through the nipple (7) by drilling the grease transfer path (6) around the center (2) causes the roll (3) to expand and contract due to the heat of the hot slab so that the internal pressure in the roll choke (1) occurs. This is to prevent forced leakage of grease, deformation of oil seal and smooth lubrication function.

Figure 4 is a perspective view showing the configuration of the roll choke and grease forced feeding device according to the present invention, when seeing the binding state of the device configured in the present invention, as shown in Figure 3 the bearing (2) built in the roll choke (1) It is engaged with the journal part 4 of the roll 3 and grease is injected to reduce the friction of the bearing 2. At this time, the nipple 7 is inserted into one side of the roll choke 1 as a means for injecting grease. An injection flow path is formed and a grease feed hose 8 is fitted into the nipples 7 of the roll chocks 1 provided respectively.

When the grease is forcibly supplied to the roll choke 1, the cylinder header 13 is moved when the grease pump is moved to the air chamber 16 in the cylinder 12 by the pressure of the air stage 10. Grease lubricated in (11) is injected into the grease chamber (15), and when the valve (9) is locked, grease injected into the grease chamber (15) continues to the roll choke (1) described above through the grease feeding hose (8). Since the internal pressure is generated by supplying grease, it is impossible for the coolant to penetrate into the roll choke (1).

FIG. 5 is a perspective view illustrating a forced paper feeding device according to the present invention, and FIG. 6 is a fraud diagram of the forced paper feeding device of FIG. 5 shows a grease feed outlet 18 and an outlet 17 at one end of the cylindrical cylinder 12 so as to easily bind to the grease feed hoses 8 and 8 ', respectively, and the cylinder 12 at the opposite end. It consists of a gauge 25 for measuring the amount of grease supplied inside, a confirmation window 26 and a built-in pointer 21.

More specifically, as shown in FIG. 6, a cylinder header 13 in which a sealing 14 is fitted is installed inside the cylindrical cylinder 12 so as to be installed therein so as to be flowable, and the grease chamber 15 and the air are centered thereon. It is divided into chambers 16, and grease feed holes 18 and outlets 17 are provided at the ends of the grease chambers 15, respectively, and are bound to grease feed hoses 8 and 8 ', respectively. At the opposite end, the air inlet 19 and the cylinder header 13 and the extended shaft 27 are inserted, and the end of the shaft 27 is provided with a point 21 marked with a small scale and a protective cover 22 to protect it. A check window 26 is provided in the middle portion of the center so that the point 21 can be checked, and a protective cover 22 having a ruler-shaped gauge 25 on the top of the check window 26 is provided at one end of the cylinder 12. Each of the bolt insertion holes 20 is fixed to the bolt 5 to be integrally formed.

The grease forced feeding device provided by the above configuration is a device for supplying grease to the roll choke 1 by using a constant air pressure, and of course, the amount of grease supplied can be confirmed to a plurality of roll chokes 1. Since one feeder can be used, it is easy to use and can be quickly checked in case of abnormal roll chocks.

As described above, the present invention pressurizes the grease in the roll choke to maintain a constant pressure when feeding the grease to the roll choke, thereby preventing the penetration of cooling water and causing the roll to expand and contract due to the heat of the material during rolling. By distributing internal pressure, it minimizes the leakage of grease and prevents the oil seal from prolonging the life of the oil seal and penetrating the cooling water. Therefore, it prevents accidents due to the breakage of the coupling part, and improves the productivity of the work.

Claims (3)

The cylinder header 13 in which the sealing 14 is fitted is installed inside the cylindrical cylinder 12 so that the cylinder header 13 can be installed therein so as to be movable. The grease chamber 15 is divided into an air chamber 16 and a grease chamber 15. The grease feed port 18 and the discharge port 17 are provided at the end of the) and are respectively bound to the grease feed hoses 8 and 8 ', and the air inlet 19 and the cylinder header are provided at opposite ends of the cylinder 12. The roll choke cooling water penetration prevention system is characterized in that the shaft 27 is inserted into the 13 and the bolt inserting holes 20 are provided at one end of the cylinder 12, respectively, and are fixed together with the bolts 5. According to claim 1, wherein the end of the shaft 27 is provided with a point 21 indicating a small scale and the confirmation window 26 is provided so that the point 21 is confirmed through the middle portion of the protective cover 22 to protect it And a protective cover 22 in which a ruler-shaped gauge 25 is marked on the upper side of the confirmation window 26, and the scale gauge 25 on the surface of the cover portion of the cylinder shaft and the point 21 indicated on the end of the cylinder shaft. Roll choke cooling water penetration prevention system, characterized in that configured to check the residual amount of grease in the cylinder in accordance with the () change. The roll chocks (6) according to claim 1, characterized in that the grease feed holes (6) are drilled so that the circulation of the pressurized grease is smoothly formed in the roll chocks formed around the bearing so that grease can be circulated. Coolant Penetration Prevention System.