Rotary kiln wheel belt replacing barrel butt-assembling adjusting device

Abstract

The utility model relates to a rotary kiln wheel belt replacing barrel butt-assembling adjusting device which comprises a first fixing block and a second fixing block, a screw penetrates through the first fixing block and the second fixing block, nuts are installed at the two ends of the screw respectively, and the nuts are located on the two side wall faces of the first fixing block and the two side wall faces of the second fixing block. The first fixing block and the second fixing block are arranged at the same height. Sealing gaskets are arranged between the nut and the first fixing block and between the nut and the second fixing block respectively. The utility model has the beneficial effects of more reasonable structural design, convenience in operation, easiness in processing and manufacturing, low manufacturing cost, time saving, labor saving, safety and reliability in operation, elimination of potential safety hazards such as inclination and slippage of the cylinder body and the like, and full guarantee of the safety of operators.

Description

Technical Field

[0001] This utility model relates to the technical field of rotary kiln equipment, specifically a rotary kiln tire replacement and cylinder adjustment device. Background Technology

[0002] The roasting process is a core step in the Bayer process of alumina production, and the rotary kiln is one of the key pieces of equipment in this process. Currently, the alumina plant has three rotary kiln production lines in its roasting process. One of these lines is in poor condition due to years of disrepair; another line has extensive detachment and cracks on its tires and support rollers, rendering it unable to operate normally. A major overhaul of the former rotary kiln and replacement of the latter's tires and support rollers are necessary. This requires cutting and dismantling the tires and cylinder of the former rotary kiln, installing the new cylinder and tires, and ensuring high-quality and efficient welding of the old and new cylinders. Precise and effective adjustments must be made at the interface between the old and new cylinders to create safe, stable, and rapid welding conditions, reduce safety risks, improve labor efficiency, save costs, and shorten the repair period. This new device also facilitates troubleshooting and adjustment of similar equipment, enabling safe, high-quality, and efficient operation of this process.

[0003] The following three reasons contribute to the current inefficient assembly and adjustment process, the inability to guarantee accuracy, the large workload, and the lack of safety control:

[0004] 1) Due to the large length of the rotary kiln body (121.92m), large diameter (φ4.2672m), and large weight (estimated at 926t), fine-tuning during installation is very difficult.

[0005] 2) Since welding quality is the key to the quality of tire replacement, if there are problems such as improper adjustment clearance or misalignment, the welding quality cannot be guaranteed.

[0006] 3) Because the rotary kiln has a slight tilt, the equipment is prone to tilting or slipping during the adjustment process, which poses a significant safety hazard.

[0007] For the reasons mentioned above, conventional methods of assembling and adjusting new cylinders and tires have problems such as uncontrolled safety, low work efficiency, and inability to guarantee quality.

[0008] The existing assembly and adjustment devices are not suitable for assembling and adjusting the cylinders in large rotary kilns. Utility Model Content

[0009] The purpose of this utility model is to provide a rotary kiln tire replacement and adjustment device with a more reasonable structural design, convenient operation, easy processing and manufacturing, low manufacturing cost, time-saving, manpower-saving, safe and reliable operation, eliminating safety hazards such as cylinder tilting and slippage, and fully ensuring the safety of operators.

[0010] This utility model discloses a rotary kiln tire replacement cylinder assembly adjustment device, which includes a first fixing block and a second fixing block. A screw is provided through the first fixing block and the second fixing block, and nuts are respectively installed at both ends of the screw. The nuts are located on the side walls of the first fixing block and the second fixing block.

[0011] The bottom surface of the first fixing block is fixedly connected to the original cylinder, and the first fixing block 1 is evenly arranged along the circumference of the cylinder wall surface of the original cylinder; the bottom surface of the second fixing block is fixedly connected to the new cylinder, and the second fixing block is evenly arranged along the circumference of the cylinder wall surface of the new cylinder.

[0012] The first and second fixing blocks are of equal height.

[0013] The first and second fixing blocks, installed on the surfaces of the original and new cylinders, serve as a fixed connection for the assembly adjustment device, making the connection more stable. The first and second fixing blocks are set at the same height, providing a horizontal reference for the assembly of the original and new cylinders, ensuring they are on the same horizontal plane. This guarantees better assembly of the original and new cylinders, aligning the inner wall of the new cylinder with the inner wall of the original cylinder and coinciding their center lines. Simultaneously, the screw and nut installed between the first and second fixing blocks allow adjustment of the interface gap between the new and original cylinders by rotating the nut. Ultimately, this ensures the interface between the new and original cylinders meets welding requirements, facilitating better welding, guaranteeing the quality of the weld surface, and thus ensuring the overall quality of the replaced cylinder, extending its service life, fully guaranteeing the operation of the large rotary kiln equipment, improving production line efficiency, and making operation more convenient, time-saving, and labor-saving.

[0014] The new cylinder is fixedly connected to a first adjusting plate, which is evenly arranged around the circumference of the cylinder wall; the original cylinder is fixedly connected to a second adjusting plate, which is evenly arranged around the circumference of the cylinder wall.

[0015] The first adjustment plate includes a first fixed seat and a first inclined surface. The side wall of the first fixed seat is provided with the first inclined surface, and the first fixed seat is fixedly connected to the outer wall surface of the new cylinder. The second adjustment plate includes a second inclined surface and a second fixed seat. The side wall of the second fixed seat is provided with the second inclined surface, and the second fixed seat is fixedly connected to the surface of the original cylinder.

[0016] After adjusting the gap between the new and original cylinders using the screw and nut, a first adjusting plate is fixedly connected to the surface of the new cylinder, and a second adjusting plate is fixedly connected to the surface of the original cylinder. A first fixing seat is fixedly connected to the outer wall of the new cylinder, and a second fixing seat is fixedly connected to the outer wall of the original cylinder. The fixed connection is stable and reliable. The second inclined surface moves along the first inclined surface. Therefore, the radial position of the new and original cylinders can be adjusted by the horizontal movement between the second and first inclined surfaces. Ultimately, the misalignment of the inner walls between the new and original cylinders meets the requirements, which is no more than 2mm. This fully ensures the welding requirements between the new and original cylinders, further guarantees the quality of the weld, and makes the operation more convenient, time-saving, labor-saving, safe, and reliable.

[0017] A sealing gasket is provided between the nut and the first fixing block and the second fixing block respectively.

[0018] The beneficial effects of this utility model are:

[0019] 1) The first and second fixing blocks installed on the surfaces of the original and new cylinders serve as a fixed connection for the assembly adjustment device, making the connection more stable. The first and second fixing blocks are set at the same height, providing a horizontal reference for the assembly of the original and new cylinders, ensuring that the original and new cylinders are on the same horizontal plane, thereby ensuring better assembly of the original and new cylinders, aligning the inner wall of the new cylinder with the inner wall of the original cylinder, and coinciding their center lines. At the same time, the screw and nut installed between the first and second fixing blocks can be used to adjust the interface gap between the new and original cylinders by rotating the nut, ultimately ensuring that the interface between the new and original cylinders meets the welding requirements, better welding the two, ensuring the quality of the weld surface, and thus ensuring the overall quality of the replaced cylinder, extending its service life, fully guaranteeing the operation of the large rotary kiln equipment, improving the working efficiency of the production line, making operation more convenient, and saving time and effort.

[0020] 2) After adjusting the gap between the new cylinder and the original cylinder through the cooperation of the screw and nut, the first adjusting plate is fixedly connected to the surface of the new cylinder, the second adjusting plate is fixedly connected to the surface of the original cylinder, the first fixing seat is fixedly connected to the outer wall of the new cylinder, and the second fixing seat is fixedly connected to the outer wall of the original cylinder. The fixed connection is stable and reliable. The second inclined surface moves along the first inclined surface. Therefore, the radial position of the new cylinder and the original cylinder can be adjusted by the horizontal movement between the second inclined surface and the first inclined surface. Finally, the misalignment of the inner wall between the new cylinder and the original cylinder meets the requirements, which is no more than 2mm. This fully guarantees the welding requirements between the new cylinder and the original cylinder, further ensures the quality of the weld, and makes the operation more convenient, time-saving, labor-saving, safe and reliable.

[0021] 3) This matching and adjusting device has a more reasonable structural design, is easy to operate and manufacture, has low manufacturing cost, saves time and manpower, is safe and reliable to operate, eliminates safety hazards such as cylinder tilting and slippage, and fully ensures the safety of operators. It has been put into use and the effect is good. It is worth promoting and applying it on a large scale. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the first adjusting plate and the second adjusting plate in this utility model;

[0024] Figure 3 This is a schematic diagram of the installation structure of the first fixing block and the second fixing block in this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the first adjustment plate and the second adjustment plate in this utility model.

[0026] In the figure: First fixing block 1, nut 2, sealing gasket 3, screw 4, second fixing block 5, first adjusting plate 6, first fixing seat 601, first inclined surface 602, second adjusting plate 7, second inclined surface 701, second fixing seat 702, original cylinder 8, new cylinder 9. Detailed Implementation

[0027] Example 1.

[0028] The following will be combined with the appendix Figure 1-4 The present invention will be further described below.

[0029] This utility model includes a first fixing block 1, a nut 2, a screw 4, a second fixing block 5, a first adjusting plate 6, a first fixing seat 601, a first inclined surface 602, a second adjusting plate 7, a second inclined surface 701, a second fixing seat 702, an original cylinder 8, and a new cylinder 9. The specific structure includes a first fixing block 1 and a second fixing block 5. A screw 4 is provided through the first fixing block 1 and the second fixing block 5. Nuts 2 are installed at both ends of the screw 4. The nuts 2 are located on the side walls of the first fixing block 1 and the second fixing block 5.

[0030] The bottom surface of the first fixing block 1 is fixedly connected to the original cylinder 8, and the first fixing block 1 is evenly arranged along the circumference of the cylinder wall surface of the original cylinder 8; the bottom surface of the second fixing block 5 is fixedly connected to the new cylinder 9, and the second fixing block 5 is evenly arranged along the circumference of the cylinder wall surface of the new cylinder 9.

[0031] The first fixing block 1 and the second fixing block 5 are of equal height.

[0032] The new cylinder 9 is fixedly connected to a first adjustment plate 6, which is evenly arranged around the circumference of the cylinder wall of the new cylinder 9; the original cylinder 8 is fixedly connected to a second adjustment plate 7, which is evenly arranged around the circumference of the cylinder wall of the original cylinder 8.

[0033] The first adjustment plate 6 includes a first fixed seat 601 and a first inclined surface 602. The side wall of the first fixed seat 601 is provided with the first inclined surface 602. The first fixed seat 601 is fixedly connected to the outer wall surface of the new cylinder 9. The second adjustment plate 7 includes a second inclined surface 701 and a second fixed seat 702. The side wall of the second fixed seat 702 is provided with the second inclined surface 701. The second fixed seat 702 is fixedly connected to the surface of the original cylinder 8.

[0034] The first fixing block 1 and the second fixing block 5 are made of steel plates with a thickness of 20 mm and a height of 120 mm; the screw 4 has a specification of φ30 mm × 180 mm; there are eight first fixing blocks 1 and the second fixing blocks 5; the first adjusting plate 6 and the second adjusting plate 7 are made of steel plates with a thickness of 20 mm.

[0035] Instructions for use: 1) Use a crane to lift the assembled tire to the installation position. First, align the downstream cuts of the new cylinder 9 and the original cylinder 8. Then, quickly connect the original cylinder 8 with the first fixing block 1 and the new cylinder 9 with the second fixing block 5 to fix one end. Next, remove the hydraulic jacks and kiln supports from the upstream top of the tire. Rotate the kiln body to allow it to slowly slide down under gravity until the distance between it and the cut meets the requirements. After aligning the upstream interface, quickly use the first fixing block 1 and the second fixing block 5 to connect the original cylinder 8 and the new cylinder on both sides of the cut. 9. After fixing, multiple sets of first fixing blocks 1 and second fixing blocks 5 are used to fix the new cylinder 9 onto the original cylinder 8; remove the crane and start the assembly and adjustment work, that is, the interface gap between the new cylinder 9 and the original cylinder 8 can be adjusted by rotating the nut 2, so that the interface between the new cylinder 9 and the original cylinder 8 meets the welding requirements. The purpose of the assembly and adjustment is to align the inner walls of the new cylinder 9 and the original cylinder 8 and make the center lines coincide, while adjusting the interface gap between the new cylinder 9 and the original cylinder 8 to meet the welding requirements, which is 3-5mm.

[0036] 2) The first adjustment plate 6 and the second adjustment plate 7 can be adjusted horizontally between the second inclined surface 701 and the first inclined surface 602 to adjust the radial position of the new cylinder 9 and the original cylinder 8, so that the misalignment of the inner wall between the new cylinder 9 and the original cylinder 8 meets the requirements, which is no more than 2mm. This fully ensures the welding requirements between the new cylinder 9 and the original cylinder 8, further ensures the quality of the weld, and makes the operation more convenient, time-saving, labor-saving, safe and reliable.

[0037] 3) Measure the center line of the kiln body and check the deviation between the center line of the new cylinder 9 and the original cylinder 8. 5mm at the kiln head and tail, 12mm at other positions, and 4mm at the large gear ring position. If the deviation meets the requirements, the discharge is finished. If it does not meet the requirements, go to steps 1) and 2) to continue adjusting until the requirements are met.

[0038] Example 2.

[0039] This utility model includes a first fixing block 1, a nut 2, a sealing gasket 3, a screw 4, a second fixing block 5, a first adjusting plate 6, a first fixing seat 601, a first inclined surface 602, a second adjusting plate 7, a second inclined surface 701, a second fixing seat 702, an original cylinder 8, and a new cylinder 9. The specific structure includes a first fixing block 1 and a second fixing block 5. A screw 4 is provided through the first fixing block 1 and the second fixing block 5. Nuts 2 are installed at both ends of the screw 4. The nuts 2 are located on the side walls of the first fixing block 1 and the second fixing block 5.

[0040] The bottom surface of the first fixing block 1 is fixedly connected to the original cylinder 8, and the first fixing block 1 is evenly arranged along the circumference of the cylinder wall surface of the original cylinder 8; the bottom surface of the second fixing block 5 is fixedly connected to the new cylinder 9, and the second fixing block 5 is evenly arranged along the circumference of the cylinder wall surface of the new cylinder 9.

[0041] The first fixing block 1 and the second fixing block 5 are of equal height.

[0042] The new cylinder 9 is fixedly connected to a first adjustment plate 6, which is evenly arranged around the circumference of the cylinder wall of the new cylinder 9; the original cylinder 8 is fixedly connected to a second adjustment plate 7, which is evenly arranged around the circumference of the cylinder wall of the original cylinder 8.

[0043] The first adjustment plate 6 includes a first fixed seat 601 and a first inclined surface 602. The side wall of the first fixed seat 601 is provided with the first inclined surface 602. The first fixed seat 601 is fixedly connected to the outer wall surface of the new cylinder 9. The second adjustment plate 7 includes a second inclined surface 701 and a second fixed seat 702. The side wall of the second fixed seat 702 is provided with the second inclined surface 701. The second fixed seat 702 is fixedly connected to the surface of the original cylinder 8.

[0044] A sealing gasket 3 is provided between the nut 2 and the first fixing block 1 and the second fixing block 5 respectively.

[0045] The first fixing block 1 and the second fixing block 5 are made of steel plates with a thickness of 20 mm and a height of 120 mm; the screw 4 has a specification of φ30 mm × 180 mm; there are eight first fixing blocks 1 and the second fixing blocks 5; the first adjusting plate 6 and the second adjusting plate 7 are made of steel plates with a thickness of 20 mm.

[0046] Instructions for use: 1) Use a crane to lift the assembled tire to the installation position. First, align the downstream cuts of the new cylinder 9 and the original cylinder 8. Then, quickly connect the original cylinder 8 with the first fixing block 1 and the new cylinder 9 with the second fixing block 5 to fix one end. Next, remove the hydraulic jacks and kiln supports from the upstream top of the tire. Rotate the kiln body to allow it to slowly slide down under gravity until the distance between it and the cut meets the requirements. After aligning the upstream interface, quickly use the first fixing block 1 and the second fixing block 5 to connect the original cylinder 8 and the new cylinder on both sides of the cut. 9. After fixing, multiple sets of first fixing blocks 1 and second fixing blocks 5 are used to fix the new cylinder 9 onto the original cylinder 8; remove the crane and start the assembly and adjustment work, that is, the interface gap between the new cylinder 9 and the original cylinder 8 can be adjusted by rotating the nut 2, so that the interface between the new cylinder 9 and the original cylinder 8 meets the welding requirements. The purpose of the assembly and adjustment is to align the inner walls of the new cylinder 9 and the original cylinder 8 and make the center lines coincide, while adjusting the interface gap between the new cylinder 9 and the original cylinder 8 to meet the welding requirements, which is 3-5mm.

[0047] 2) The first adjustment plate 6 and the second adjustment plate 7 can be adjusted horizontally between the second inclined surface 701 and the first inclined surface 602 to adjust the radial position of the new cylinder 9 and the original cylinder 8, so that the misalignment of the inner wall between the new cylinder 9 and the original cylinder 8 meets the requirements, which is no more than 2mm. This fully ensures the welding requirements between the new cylinder 9 and the original cylinder 8, further ensures the quality of the weld, and makes the operation more convenient, time-saving, labor-saving, safe and reliable.

[0048] 3) Measure the center line of the kiln body and check the deviation between the center line of the new cylinder 9 and the original cylinder 8. 5mm at the kiln head and tail, 12mm at other positions, and 4mm at the large gear ring position. If the deviation meets the requirements, the discharge is finished. If it does not meet the requirements, go to steps 1) and 2) to continue adjusting until the requirements are met.

[0049] The sealing gasket 3 ensures the proper functioning of the nut 2 and screw 4, making the operation more stable and improving the sealing between the nut 2 and the first fixing block 1 and the second fixing block 5.

Claims

1. A rotary kiln tire replacement and cylinder adjustment device, characterized in that: It includes a first fixing block (1) and a second fixing block (5), and a screw (4) is provided through the first fixing block (1) and the second fixing block (5). Nuts (2) are installed at both ends of the screw (4), and the nuts (2) are located on the side walls of the first fixing block (1) and the second fixing block (5).

2. The rotary kiln tire replacement and cylinder adjustment device as described in claim 1, characterized in that: The heights of the first fixing block (1) and the second fixing block (5) are equal.

3. The rotary kiln tire replacement cylinder adjustment device as described in claim 2, characterized in that: The bottom surface of the first fixing block (1) is fixedly connected to the original cylinder (8), and the first fixing block (1) is evenly arranged around the circumference of the cylinder wall surface of the original cylinder (8); the bottom surface of the second fixing block (5) is fixedly connected to the new cylinder (9), and the second fixing block (5) is evenly arranged around the circumference of the cylinder wall surface of the new cylinder (9).

4. The rotary kiln tire replacement cylinder adjustment device as described in claim 3, characterized in that: The new cylinder (9) is fixedly connected to a first adjustment plate (6), which is evenly arranged around the circumference of the cylinder wall of the new cylinder (9); the original cylinder (8) is fixedly connected to a second adjustment plate (7), which is evenly arranged around the circumference of the cylinder wall of the original cylinder (8).

5. The rotary kiln tire replacement cylinder adjustment device as described in claim 4, characterized in that: The first adjustment plate (6) includes a first fixed seat (601) and a first inclined surface (602). The side wall of the first fixed seat (601) is provided with the first inclined surface (602). The first fixed seat (601) is fixedly connected to the outer wall of the new cylinder (9). The second adjustment plate (7) includes a second inclined surface (701) and a second fixed seat (702). The side wall of the second fixed seat (702) is provided with the second inclined surface (701). The second fixed seat (702) is fixedly connected to the surface of the original cylinder (8).

6. The rotary kiln tire replacement cylinder adjustment device as described in claim 5, characterized in that: A sealing gasket (3) is provided between the nut (2) and the first fixing block (1) and the second fixing block (5).

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