Flexible cooling water sealing device for vertical roll of hot mill

Abstract

The utility model relates to a hot mill vertical roll cooling water flexible sealing device, which comprises a U-shaped ring, a fixing plate, a positioning plate and a flexible scraper, the U-shaped ring is sleeved on a connecting rod beside a vertical roll, the fixing plate is of an L-shaped structure, one end of the fixing plate is fixedly connected with the U-shaped ring, the other end of the fixing plate is fixedly connected with the flexible scraper, and the shape of the outer edge of the flexible scraper is matched with that of the vertical roll. The device has the advantages that the structure is simple and reasonable, the device is mounted in the space from the connecting rod of the bearing seat to the working surface of the vertical roll, so that the flexible scraper is in contact with the vertical roll to form a water seal structure, and vertical roll cooling water in a rack is prevented from being sprayed to the vertical roll, then enters the rack and is sprayed to the edge of strip steel and the rack, the temperature reduction speed of the edge of the strip steel is high, and the quality of finished rolled products is affected. In addition, loss of erosion corrosion of vertical roll cooling water to the rack roll fixing seat and corresponding equipment is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of hot rolling production, in particular to a flexible water sealing device for cooling water of vertical rolls of a hot rolling mill. Background Art

[0002] The temperature of hot rolled strip drops rapidly in the rough rolling area. The edge of the strip often has unstable quality and many defects due to the fast cooling speed. For example, the edge of the strip has warping, edge cracks, scratches, black lines on the edge, etc. The main reason is that the speed of the roll in the rough rolling area is slow, and the cooling water volume and high pressure of the high-pressure descaling water are high. Therefore, a device that can block the cooling water, Summary of the invention

[0003] The utility model aims to provide a flexible water sealing device for cooling water of vertical rolls of a hot rolling mill, so as to reduce the temperature drop of the edge of the strip steel in the rough rolling area and improve the edge quality of the strip steel in the rough rolling area.

[0004] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0005] A flexible water sealing device for cooling water of a hot rolling mill vertical roller comprises a U-shaped ring, a fixing plate, a positioning plate and a flexible scraper. The U-shaped ring is sleeved on a connecting rod beside the vertical roller. The fixing plate is an L-shaped structure. One end of the fixing plate is fixedly connected to the U-shaped ring, and the other end is fixedly connected to the flexible scraper. The outer edge shape of the flexible scraper matches the vertical roller.

[0006] The U-shaped ring is a U-shaped structure with threads at both ends. The two ends of the U-shaped ring are fixedly connected to the fixing plate through limiting nuts.

[0007] The fixing plate and the flexible scraper are fixedly connected via a positioning plate, and the bolts pass through the fixing plate, the flexible scraper and the positioning plate in sequence and are then connected with nuts.

[0008] It also includes a fixing rod and a spring. The fixing rod is fixedly connected to the bearing seat. One end of the spring is fixedly connected to the fixing rod, and the other end is fixedly connected to the connecting rod.

[0009] The thickness of the flexible scraper is 6-10 mm.

[0010] One side of the flexible scraper is fixedly connected to the fixed plate, and the other side extends out of the fixed plate, with the outer edge resting on the vertical roller.

[0011] There are more than two U-shaped rings.

[0012] The flexible scraper is a rubber plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The structure of the flexible water sealing device for cooling water of the vertical roll of the hot rolling mill is simple and reasonable. The device is installed in the space between the connecting rod of the bearing seat and the working surface of the vertical roll, so that the flexible scraper contacts the vertical roll to form a water sealing structure, which prevents the cooling water of the vertical roll in the frame from being sprayed onto the vertical roll and then entering the frame to spray onto the edge of the strip and the frame, causing the edge of the strip to drop rapidly and affecting the quality of the final rolled product. In addition, it also reduces the loss of erosion and corrosion of the frame roll fixing seat and corresponding equipment by the cooling water of the vertical roll. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the front view of the utility model.

[0016] Figure 2 It is a side view of the utility model.

[0017] Figure 3 It is a schematic diagram of the working state of the utility model.

[0018] Figure 4 It is a schematic diagram of the connection position of the spring.

[0019] In the figure: 1-connecting rod 2-U-shaped ring 3-fixing plate 4-positioning plate 5-flexible scraper 6-fixing bolt 7-limiting nut 8-vertical roller 9-bearing seat 10-fixing rod 11-spring. DETAILED DESCRIPTION

[0020] The present invention is described in detail below in conjunction with the accompanying drawings of the specification, but it should be noted that the implementation of the present invention is not limited to the following embodiments.

[0021] See Figure 1-Figure 3 A flexible water sealing device for cooling water of a vertical roller of a hot rolling mill comprises a U-shaped ring 2, a fixed plate 3, a positioning plate 4, and a flexible scraper 5. The U-shaped ring 2 is sleeved on a connecting rod 1 beside a vertical roller 8. The fixed plate 3 is an L-shaped structure. One end of the fixed plate 3 is fixedly connected to the U-shaped ring 2, and the other end is fixedly connected to the flexible scraper 5. The outer edge shape of the flexible scraper 5 matches the vertical roller 8. One side of the flexible scraper 5 is fixedly connected to the fixed plate 3, and the other side extends out of the fixed plate 3. The flexible scraper 5 relies on its own elasticity to rest on the vertical roller 8. The thickness of the flexible scraper 5 is 6 to 10 mm. The flexible scraper 5 is made of a rubber sheet.

[0022] The U-shaped ring 2 is made of a round steel bar. The U-shaped ring 2 is a U-shaped structure with threads at both ends. The two ends of the U-shaped ring 2 are fixedly connected to the fixed plate 3 through limit nuts 7. The fixed plate 3 can be fixed by clamping two limit nuts 7, which can not only limit the position of the fixed plate 3, but also ensure the connection firmness between the fixed plate 3 and the U-shaped ring 2. After the nut is assembled, the nut is sealed with sealant to prevent buckling and rust. In order to ensure the installation firmness of the fixed plate 3, more than two U-shaped rings 2 are used, arranged axially along the connecting rod 1.

[0023] The fixing plate 3 and the flexible scraper 5 are fixedly connected through the positioning plate 4, and the fixing bolts 6 pass through the fixing plate 3, the flexible scraper 5, and the positioning plate 4 in sequence and are connected with the nuts. After the fixing bolts 6 are assembled, the fixing bolts 6 are sealed with a sealant to prevent buckling and rust. The positioning plate 4 can be one or more than two.

[0024] In addition, a spring 11 and a fixed rod 10 are installed at the top of the connecting rod 1 according to the size and direction of the force required to ensure that the flexible scraper 5 is always in close contact with the working surface of the vertical roller 8. The fixed rod 10 is fixedly connected to the bearing seat 9, and one end of the spring 11 is fixedly connected to the fixed rod 10, and the other end is fixedly connected to the connecting rod 1. The spring 11 provides the force to compensate for the loss of the flexible scraper 5 and the force to meet the rotation of the connecting rod 1, see Figure 4 .

[0025] Example

[0026] See Figure 1-Figure 3 , confirm the direction of the cooling water nozzle of the vertical roller 8 in the vertical roller 8 frame, and then determine the installation angle and direction of the fixed plate 3. The direction of the cooling water nozzle of the vertical roller 8 should be toward the L-shaped inner side (90° right angle side) of the fixed plate 3 to facilitate water sealing.

[0027] The fixing plate 3 is fixed to the connecting rod 1 by using the U-shaped ring 2 and the limit nut 7, and the sealant is used to seal after assembly. The connecting rod 1 can rotate relative to the bearing seat 9, and the top spring 11 gives a force to compensate when the flexible scraper 5 is worn to ensure the water sealing effect. The U-shaped ring 2 is made of 304 stainless steel to prevent rust and loosening from affecting the effect and service life.

[0028] The flexible scraper 5 is made according to the concave shape of the working surface of the vertical roller 8, and a wear-resistant and high-temperature resistant rubber material that can withstand the cooling water pressure of the vertical roller 8 is selected. The flexible scraper 5 is installed between the fixed plate 3 and the positioning plate 4, and fixed with the fixing bolts 6 to ensure that the flexible scraper 5 is in close contact with the working surface of the vertical roller 8. The flexible scraper 5 is made of a rubber plate with a thickness of 8 to 10 mm and a certain toughness. The fixed plate 3 and the positioning plate 4 are made of 2 to 2.5 mm thick stainless steel plates, and the fixing bolts 6 are assembled and sealed with sealant. The distance between the fixed plate 3 and the working surface of the vertical roller 8 is 135 to 145 mm for the best effect. The top of the connecting rod 1 of the bearing seat 9 is well treated with anti-oil sludge to prevent the compensation function from failing.

Claims

1. A flexible water sealing device for cooling water of vertical rolls of hot rolling mill, characterized in that: It includes a U-shaped ring, a fixing plate, a positioning plate, and a flexible scraper. The U-shaped ring is sleeved on the connecting rod beside the vertical roller. The fixing plate is an L-shaped structure. One end of the fixing plate is fixedly connected to the U-shaped ring, and the other end is fixedly connected to the flexible scraper. The outer edge shape of the flexible scraper matches the vertical roller.

2. A hot rolling mill vertical roll cooling water flexible sealing device according to claim 1, characterized in that: The U-shaped ring is a U-shaped structure with threads at both ends. The two ends of the U-shaped ring are fixedly connected to the fixing plate through limiting nuts.

3. A hot rolling mill vertical roll cooling water flexible sealing device according to claim 1, characterized in that: The fixing plate and the flexible scraper are fixedly connected via a positioning plate, and the bolts pass through the fixing plate, the flexible scraper and the positioning plate in sequence and are then connected with nuts.

4. A flexible water sealing device for cooling water of a hot rolling mill vertical roll according to claim 1, characterized in that: It also includes a fixing rod and a spring. The fixing rod is fixedly connected to the bearing seat. One end of the spring is fixedly connected to the fixing rod, and the other end is fixedly connected to the connecting rod.

5. A flexible water sealing device for cooling water of vertical rolls of hot rolling mill according to claim 1, characterized in that: The thickness of the flexible scraper is 6-10 mm.

6. A hot rolling mill vertical roll cooling water flexible sealing device according to claim 1, characterized in that: One side of the flexible scraper is fixedly connected to the fixed plate, and the other side extends out of the fixed plate, with the outer edge resting on the vertical roller.

7. A hot rolling mill vertical roll cooling water flexible sealing device according to claim 1, characterized in that: There are more than two U-shaped rings.

8. A hot rolling mill vertical roll cooling water flexible sealing device according to claim 1, characterized in that: The flexible scraper is a rubber plate.

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