Mounting structure suitable for sliding nozzle of tundish

Abstract

The invention provides a mounting structure suitable for a sliding nozzle of an intermediate tank. The mounting structure comprises a fixing block and a positioning welding device used for performing positioning welding on the fixing block. The fixing blocks are fixed to the water gap installation positions formed in the lower portion of the intermediate tank in a welded mode. A T-shaped groove into which the head of the hexagon bolt is inserted is formed in the fixing block; a screw hole is formed in the sliding nozzle. The mounting structure has the beneficial effects that the provided mounting structure suitable for the sliding nozzle of the intermediate tank can effectively fix a sliding nozzle device, so that the sliding nozzle is convenient to mount and dismount; after the fixing block fails, the fixing block can be replaced and repaired simply in time; the fixed block is welded to the bottom of the tundish through the positioning welding device, positioning is accurate, machine tool resources are saved, and the positioning welding device is simple.

Description

Technical Field

[0001] The invention relates to the field of tundish equipment for containing liquid metal, and is specifically applied to an installation structure of a sliding water nozzle suitable for the tundish. Background Art

[0002] The tundish is used to hold liquid metal. The main function of the sliding nozzle device of the tundish is to control the switch and flow rate of the tundish casting to the crystallizer, and it plays the role of a "valve" to control the flow of molten steel. The sliding nozzle device is located at the bottom of the tundish and is generally fixed to the bottom of the tundish with inverted bolts. This fixing method is more difficult to install, specifically because the bolt holes are difficult to align; the screw holes are difficult to repair after thread slippage or breakage; the manufacturing cost is high, and the tundish as a whole is required to be positioned and processed by machine tools, which places high demands on machine tool resources. Summary of the invention

[0003] The present invention provides a sliding nozzle installation structure suitable for a tundish, which adopts the following technical solution:

[0004] A mounting structure for a sliding nozzle of a tundish, comprising: a fixing block and a positioning welding device for positioning welding the fixing block; the fixing block is fixed to each nozzle mounting position provided at the lower part of the tundish by welding; the fixing block is formed with a T-slot for inserting the head of a hexagonal bolt; the sliding nozzle is formed with a screw hole;

[0005] Furthermore, four fixing blocks are fixed below the intermediate tank;

[0006] Four fixing blocks are arranged in a rectangular shape and welded at each water inlet position at the lower part of the intermediate tank.

[0007] Further, the positioning welding device includes: a circular upper steel plate and an H-shaped lower steel plate;

[0008] The upper steel plate and the lower steel plate are concentrically arranged, and threaded holes are correspondingly arranged at the center;

[0009] The upper steel plate and the lower steel plate are fixed into a whole by bolts passing through the upper threaded holes and the lower threaded holes in sequence;

[0010] Furthermore, the H-shaped lower steel plate is formed with two positioning slots for positioning the fixing block.

[0011] Furthermore, a steel pad is provided on one side of the lower steel plate away from the upper steel plate for raising the lower steel plate to allow the bolts to pass through the threaded holes of the lower steel plate.

[0012] Furthermore, two pad steel plates are provided on one side of the lower steel plate away from the upper steel plate;

[0013] The two pad steel plates are respectively located on both sides of the threaded hole of the lower steel plate.

[0014] Furthermore, the pad steel plate is a trapezoidal plate; the thickness of the pad steel plate is 20 mm.

[0015] Further, the lower steel plate is formed with a plurality of fixing holes for fixing the lower steel plate to the installation position.

[0016] The benefit of the present invention lies in that the installation structure of the sliding water gate suitable for the intermediate tank can effectively fix the sliding water gate device, making the sliding water gate easy to install and disassemble; after the fixing block fails, it can be replaced in time and repaired simply; the fixing block is welded to the bottom of the intermediate tank using a positioning welding device, which has accurate positioning, saves machine tool resources, and has a simple positioning welding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a mounting structure 1 of a sliding nozzle applicable to a tundish of the present invention;

[0018] Figure 2 for Figure 1 Schematic diagram of the position of the middle fixed block 3 at the bottom of the intermediate tank 2;

[0019] Figure 3 , 4 They are schematic diagrams of the front elevation and side elevation sections of the installation structure 1 of the sliding gate;

[0020] Figure 5 A three-dimensional diagram of the fixed block 3

[0021] Figure 6 5. A stereogram of a positioning welding device

[0022] Sliding gate installation structure 1, intermediate tank 2, fixing block 3, T-slot 4, positioning welding device 5, circular upper steel plate 6, H-shaped lower steel plate 7, threaded hole 8, hexagonal bolt (large) 9, hexagonal nut (large) 10, pad steel plate 11, positioning slot 12, fixing hole 13, hexagonal bolt 14, hexagonal nut 15. DETAILED DESCRIPTION

[0023] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] The present invention provides a sliding nozzle installation structure 1 suitable for a tundish, which adopts the following technical solution:

[0025] A mounting structure 1 for a sliding water outlet of an intermediate tank, comprising: a fixing block 3 and a positioning welding device 5 for positioning welding the fixing block 3, wherein the fixing block 3 is fixed to each water outlet installation position provided at the lower part of the intermediate tank 2 by welding, and the fixing block 3 is formed with a T-slot 4 for inserting the head of a hexagonal bolt 14. The sliding water outlet is formed with a screw hole, and four fixing blocks 3 are fixed below the intermediate tank 2, and the four fixing blocks 3 are welded to each water outlet position at the lower part of the intermediate tank 2 in a rectangular arrangement. Further, the positioning welding device 5 comprises: a circular upper steel plate 6 and an H-shaped lower steel plate 7, wherein the circular upper steel plate 6 and the H-shaped lower steel plate 7 are concentrically arranged and have corresponding threaded holes 8 at the center, and the circular upper steel plate 6 and the H-shaped lower steel plate 7 are fixed into a whole by hexagonal bolts (large) 9 passing through the upper threaded holes 8 and the lower threaded holes 8 in sequence. The H-shaped lower steel plate 7 is formed with two positioning slots 12 for positioning the fixing block 3. A steel plate 11 for raising the H-shaped lower steel plate 7 to allow the hexagonal bolt (large) 10 to pass through the threaded hole 8 of the H-shaped lower steel plate 7 is provided on the side of the H-shaped lower steel plate 7 away from the circular upper steel plate 6. Two steel plates 11 are provided on the side of the H-shaped lower steel plate 7 away from the circular upper steel plate 6. The two steel plates 11 are respectively located on both sides of the threaded hole 8 of the H-shaped lower steel plate 7. The steel plates 11 are trapezoidal plates with a thickness of 20 mm. The H-shaped lower steel plate 7 is formed with a plurality of fixing holes 13 for fixing the H-shaped lower steel plate 7 to the installation position.

[0026] The benefit of the present invention lies in that the installation structure 1 suitable for the sliding water gate of the intermediate tank can effectively fix the sliding water gate device, making the sliding water gate easy to install and disassemble; after the fixing block 3 fails, it can be replaced in time and repaired simply; the fixing block 3 is welded to the bottom of the intermediate tank 2 using a positioning welding device 5, which has accurate positioning, saves machine tool resources, and has a simple positioning welding device.

[0027] refer to Figure 1 , 2 , 3, 5, the installation position of the sliding nozzle installation structure 1 is at the bottom side of the intermediate tank 2, the original fixing screw hole of the sliding nozzle is removed, and the fixing block 3 is positioned and welded at the bottom of the intermediate tank 2 through the positioning welding device 5. The fixing block 3 is a metal block with a T-slot 4, and each nozzle is generally arranged in a rectangular shape. The size of the fixing block 3 is determined according to the installation size of the installed nozzle.

[0028] refer to Figure 3 , 4The positioning welding device 5 includes a circular upper steel plate 6 and an H-shaped lower steel plate 7. The circular upper steel plate 6 and the H-shaped lower steel plate 7 are concentrically arranged, and a threaded hole 8 is correspondingly provided at the center. The hexagonal bolt (large) 9 passes through the central threaded holes 8 of the circular upper steel plate 6 and the H-shaped lower steel plate 7 in sequence to assemble the positioning welding device 5 into a whole. The positioning slot 12 is used to determine the installation position of the positioning welding device 5 and connect with the designated position of the bottom of the intermediate tank 2. Two pad steel plates 11 are provided on the side of the circular lower steel plate 6 away from the H-shaped upper steel plate 7. The two pad steel plates 11 are respectively located on both sides of the threaded hole 8 of the H-shaped lower steel plate 7. The pad steel plate 11 is a trapezoidal plate with a thickness of 20 mm. The H-shaped lower steel plate 7 is formed with a plurality of fixing holes 13 for fixing the H-shaped lower steel plate 7 to the installation position.

[0029] As a specific implementation method, refer to Figure 3 , insert one end of the hexagonal bolt 14 into the T-slot 4 in the fixing block 3, and pass the other end of the hexagonal bolt 14 through the fixing hole 13 from the top of the H-shaped lower steel plate 7. After passing through the fixing hole 13, the hexagonal bolt 14 is screwed and fixed with the hexagonal nut 15 at the bottom of the H-shaped lower steel plate 7. The remaining fixing blocks 3 are connected to the H-shaped lower steel plate 7 of the positioning welding device 5 in the same way.

[0030] As a specific implementation, after the fixing block 3 is connected to the fixing hole 13, the positioning groove 12 on one side of the H-shaped lower steel plate 7 for installing the fixing block 3 is connected to the bottom of the intermediate tank 2 to determine the welding position of the fixing block 3.

[0031] Then, the hexagonal bolt (large) 9 is passed through the threaded hole 8 located in the center of the circular upper steel plate 6 from above the circular upper steel plate 6, and then passed through the center threaded hole 8 above the H-shaped lower steel plate 7. The hexagonal nut (large) 10 is used to screw the H-shaped lower steel plate 7 on the side close to the pad steel plate 11 to fix it, stabilize the installation position of the fixed block 3, and weld the fixed block 3.

[0032] After the welding operation is completed, the positioning welding device 5 needs to be dismantled, and the hexagonal nuts 15 installed at the fixing holes 13 of the H-shaped lower steel plate 7 are unscrewed in turn, and the hexagonal bolts 14 in the T-slot 4 are taken out in turn, and then the hexagonal nuts (large) 10 under the H-shaped lower steel plate 7 are unscrewed, and the H-shaped lower steel plate 7 and the circular upper steel plate 6 are removed to complete the installation of the fixing block 3.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present invention.

Claims

1. A sliding nozzle installation structure suitable for a tundish, characterized in that: include: A fixing block and a positioning welding device for positioning welding the fixing block; the fixing block is fixed to each nozzle installation position provided at the lower part of the intermediate tank by welding; the fixing block is formed with a T-slot for inserting the bolt head of the hexagonal bolt; the sliding nozzle is formed with a screw hole; the sliding nozzle is fixed to the fixing block by screwing the threaded portion of the bolt into the screw hole.

2. The installation structure of the sliding gate suitable for the intermediate tank according to claim 1, characterized in that: Four fixing blocks are fixed below the intermediate tank; The four fixing blocks are arranged in a rectangular shape and welded at each water inlet position at the lower part of the intermediate tank.

3. The installation structure of the sliding gate suitable for the intermediate tank according to claim 2, characterized in that: The positioning welding device comprises: a circular upper steel plate and an H-shaped lower steel plate; The upper steel plate and the lower steel plate are arranged concentrically, and threaded holes are correspondingly provided at the center; The upper steel plate and the lower steel plate are fixed into a whole by bolts passing through the upper threaded holes and the lower threaded holes in sequence; The H-shaped lower steel plate is formed with two positioning slots for positioning the fixing block.

4. The installation structure of the sliding gate suitable for the intermediate tank according to claim 3, characterized in that: A steel pad is provided on one side of the lower steel plate away from the upper steel plate for raising the lower steel plate to allow the bolt to pass through the threaded hole of the lower steel plate.

5. The installation structure of the sliding gate suitable for the intermediate tank according to claim 4, characterized in that: Two pad steel plates are provided on one side of the lower steel plate away from the upper steel plate; The two pad steel plates are respectively located on both sides of the threaded hole of the lower steel plate.

6. The installation structure of the sliding gate suitable for the intermediate tank according to claim 5, characterized in that: The backing steel plate is a trapezoidal plate; The thickness of the steel plate is 20 mm.

7. The installation structure of the sliding gate suitable for the intermediate tank according to claim 5, characterized in that: The lower steel plate is formed with a plurality of fixing holes for fixing the lower steel plate to an installation position.

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