Cleaning-free central pipe of vertical reduction tank

Abstract

The utility model relates to the technical field of magnesium smelting, and discloses a cleaning-free central pipe of a vertical reduction tank, which comprises a plurality of connecting pieces arranged along the circumference, and a gap is formed between every two adjacent connecting pieces; wherein the connecting pieces located at the odd number positions and the connecting pieces located at the even number positions are connected to form a supporting body respectively, and the two supporting bodies can be adjusted in a relative sliding mode. According to the utility model, when slag is discharged from the inside of the reduction tank, the two supporting bodies can slide relatively by utilizing the power of upwards lifting the central pipe, so that ash slag blocked between the two adjacent connecting sheets is removed through friction, the purpose of automatic cleaning is realized, the central pipe does not need to be cleaned manually, the labor intensity is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of magnesium smelting, in particular to a center pipe of a vertical reduction tank that does not require cleaning. Background Art

[0002] At present, in the process of smelting metallic magnesium, the vertical reduction tank (vertical tank) for magnesium smelting has the advantages of convenient charging of furnace charge and automation and mechanization of slag discharge, thereby reducing the labor intensity of workers. Therefore, the vertical reduction tank for magnesium smelting has gradually become the development direction of the future silicon thermal method magnesium reduction process; specifically, the reduction tank is vertically erected in the furnace chamber, and a lower discharge port is opened, and the upper part is charged and the lower part discharges slag by gravity.

[0003] In order to ensure that the magnesium vapor generated during the smelting process rises to the crystallization barrel arranged at the top of the vertical reduction tank for cooling and crystallization, it is usually necessary to arrange a center pipe in the vertical reduction tank to provide a channel for the rise of the magnesium vapor, and to avoid the situation that the pellet material and its debris and dust form a relatively tight part (usually more serious at the bottom of the vertical reduction tank), resulting in the inability of the magnesium vapor to rise, thereby improving the magnesium smelting efficiency; at the same time, since the heating depth of the external furnace chamber of the reduction tank usually cannot reach the central position, filling the center pipe in the middle of the vertical reduction tank can enable the pellet material to be fully smelted and reduce the material-magnesium ratio.

[0004] However, at present, seamless steel pipes are mostly used for the center pipes of the reduction tanks, and a plurality of openings for the magnesium vapor to pass through are opened on the pipe walls. Each center pipe is provided with at least 48 small holes. In the harsh environment of high-temperature dust in the tank, the eyes are blocked usually after two furnace runs, which directly affects the production capacity. After the center pipe is blocked, all rely on manual eye cleaning. The specific operation is that after slag discharge, the overhead crane hoists the 1200 °C high-temperature center pipe, and the worker holds a steel awl to poke the eye of the high-temperature center pipe. The labor intensity is extremely high. This method of cleaning the center pipe not only takes time and effort, but also has a large safety hazard during the cleaning process due to the high temperature of the center pipe. Therefore, there is an urgent need for a center pipe of a vertical reduction tank that does not require cleaning and can achieve automatic blockage removal without manual intervention. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a center pipe of a vertical reduction tank that does not require cleaning, which can utilize the power to lift the center pipe upward when discharging slag inside the reduction tank, so that the two support bodies slide relative to each other, and then the ash slag blocked between adjacent two connecting pieces is removed by friction, achieving the purpose of automatic cleaning, without manual cleaning of the center pipe, reducing the labor intensity and improving the work efficiency.

[0006] The utility model adopts the following technical solutions:

[0007] A vertical reduction tank non-cleaning central pipe includes a plurality of connecting pieces arranged along the circumference, and there are gaps formed between adjacent two of the connecting pieces; among them, the connecting pieces located at odd positions and the connecting pieces located at even positions are each connected to form a support body, and the two support bodies can be adjusted to slide relative to each other.

[0008] Preferably, support connecting parts are arranged in the middle of the plurality of connecting pieces located at odd positions and the plurality of connecting pieces located at even positions.

[0009] Preferably, a plurality of the support connecting parts are arranged at intervals.

[0010] Preferably, the connecting piece is detachably connected to the support connecting part.

[0011] Preferably, each of the connecting pieces is of a split structure, and the split connecting piece is detachably connected to the corresponding support connecting part.

[0012] Preferably, a plurality of connecting ear plates are vertically arranged at the upper and lower ends of each of the support connecting parts, and the connecting piece is detachably connected to the connecting ear plates.

[0013] Preferably, fixing holes are formed in the connecting ear plates. After the connecting ear plates pass through the mounting holes formed in the connecting pieces, a pin is inserted into the fixing holes.

[0014] Preferably, the connecting piece is arc-shaped.

[0015] Preferably, a plugging head is arranged at the bottom of one of the support bodies.

[0016] Preferably, the plugging head is conical.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows: By arranging a plurality of connecting pieces in a circumference and setting gaps between adjacent connecting pieces, a rising channel can be provided for magnesium vapor. By connecting the connecting pieces at odd positions and the connecting pieces at even positions to form support bodies respectively, when discharging slag inside the reduction tank, the upward lifting power of the central pipe can be utilized to make the two support bodies slide relative to each other, so that the ash slag blocked between adjacent two connecting pieces can be removed by friction, achieving the purpose of automatic slag cleaning, without manual cleaning of the central pipe, reducing labor intensity and improving work efficiency. Description of the Drawings

[0018] Figure 1 It is the front view of the embodiment of the present application;

[0019] Figure 2 It is the top view of the embodiment of the present application;

[0020] Figure 3This is a schematic structural diagram of the connecting piece in the embodiment of the present application. Detailed implementation manners

[0021] The following will clearly and completely describe the present utility model in conjunction with the accompanying drawings and embodiments:

[0022] As Figures 1 to 3 shown, a vertical reduction tank non-cleaning central pipe of the present utility model includes a plurality of connecting pieces 1 arranged along the circumference. In this embodiment, the number of connecting pieces 1 is preferably set to 6. Each connecting piece 1 is preferably set to an arc-shaped structure to enhance its structural strength and prevent the connecting piece 1 from deforming during the high-temperature process. There is a gap between adjacent two connecting pieces 1 to provide a rising channel for magnesium vapor. Among them, the connecting pieces 1 in the odd positions and the connecting pieces 1 in the even positions are respectively connected to form a support body, and the two support bodies can be relatively slid and adjusted. So when discharging slag inside the reduction tank, through the power of lifting the central pipe upward, the two support bodies slide relatively, and then the ash slag blocked between adjacent two connecting pieces 1 is removed by friction, achieving the purpose of automatic slag cleaning, without manual cleaning of the central pipe, reducing labor intensity and improving work efficiency. A lifting ring 2 can be arranged on the support body that can move upward during lifting, which is convenient for the subsequent hoisting operation of the crane. During the hoisting process, the support body provided with the lifting ring 2 is subjected to an upward pulling force, and the other support body has a frictional force with the slag in the reduction tank. At this time, as the lifting ring 2 is gradually lifted, the two support bodies will move relatively, and thus the slag cleaning operation in the gap between adjacent connecting pieces 1 can be realized.

[0023] In addition, in this embodiment, a sealing head 3 is arranged at the bottom of one of the support bodies. The sealing head 3 is arranged at the bottom of the support body without the lifting ring 2, and is preferably set to a conical structure to seal the bottom of the vertical reduction tank and ensure the sealing performance during the smelting process.

[0024] Furthermore, a support connection part 4 is arranged in the middle of multiple connecting pieces 1 located at odd positions and even positions. The corresponding connecting pieces 1 are connected through the support connection part 4. Preferably, multiple support connection parts 4 are arranged at intervals to evenly support the connecting pieces 1. Among them, the support connection parts 4 connected to the connecting pieces 1 at odd positions and the support connection parts 4 connected to the connecting pieces 1 at even positions are arranged alternately. The slidable distance between the two support bodies is the distance between the two support connection parts 4, and this distance is adjusted according to actual requirements. Calculated based on the total length of 4m of the connecting piece 1 in this embodiment, the relative sliding distance of the support body is 46cm. In this embodiment, the connecting piece 1 is detachably connected to the support connection part 4 to facilitate subsequent targeted replacement and adjustment, reducing the cost of inspection and maintenance. In addition, each connecting piece 1 is of a split structure, and the split connecting piece 1 is detachably connected to the corresponding support connection part 4. The split setting of the connecting piece 1 can, on the one hand, reduce the cost of subsequent inspection and maintenance and enable targeted replacement and inspection, and on the other hand, the segmented setting of the connecting piece 1 helps the sliding between the two support bodies and reduces the resistance during lifting.

[0025] Furthermore, in this embodiment, the main body of the support connection part 4 is preferably set as a hollow cylindrical structure with an outer side surface set as an arc structure to enhance the fit with the connecting piece 1. A plurality of connecting ear plates 5 are vertically arranged at the upper and lower ends of each support connection part 4, and the connecting piece 1 is detachably connected to the connecting ear plates 5. Specifically, fixing holes are formed in the connecting ear plates 5. After the connecting ear plates 5 pass through the mounting holes 6 formed in the connecting piece 1, a pin 7 is inserted into the fixing holes to realize the connection between the support connection part 4 and the connecting piece 1. This structure is convenient for installation and disassembly, simple in structure, and strong in practicability.

[0026] When the utility model is in use, the central tube is integrally installed in the vertical reduction tank, and the slag discharge hole at the bottom of the vertical reduction tank is sealed by the plugging head 3 arranged at the bottom of the central tube; then, smelting materials are added into the vertical reduction tank. When slag discharge is required after smelting is completed, a crane is used to connect with the lifting ring 2 arranged on the support body. As the lifting progresses, due to the friction between the slag and the connecting piece 1 and the action of the self-weight of the support body, relative sliding will occur between the two support bodies. At this time, the slag blocked in the gap between two adjacent connecting pieces 1 can be cleared without manual intervention, which not only reduces the labor intensity but also ensures safety and improves work efficiency.

Claims

1. A vertical reduction tank non-cleaning central pipe, characterized in that: It includes a plurality of connecting pieces arranged along the circumference, and a gap is formed between two adjacent connecting pieces; among them, the connecting pieces in odd positions and the connecting pieces in even positions are respectively connected to form a support body, and the two support bodies can be slidably adjusted relative to each other.

2. The vertical reduction tank non-cleaning central pipe according to claim 1, characterized in that: Support connecting parts are arranged in the middle of a plurality of the connecting pieces in odd positions and a plurality of the connecting pieces in even positions.

3. The vertical reduction tank non-cleaning central pipe according to claim 2, characterized in that: A plurality of the support connecting parts are arranged at intervals.

4. The vertical reduction tank non-cleaning central pipe according to claim 3, characterized in that: The connecting piece is detachably connected to the support connecting part.

5. The vertical reduction tank non-cleaning central pipe according to claim 3, characterized in that: Each of the connecting pieces is of a split structure, and the split connecting piece is detachably connected to the corresponding support connecting part.

6. The vertical reduction tank non-cleaning central pipe according to claim 5, characterized in that: At the upper and lower ends of each of the support connecting parts, multiple groups of connecting ear plates are vertically arranged, and the connecting piece is detachably connected to the connecting ear plate.

7. The vertical reduction tank non-cleaning central pipe according to claim 6, characterized in that: A fixing hole is formed in the connecting ear plate. After the connecting ear plate passes through the mounting hole formed in the connecting piece, a pin is inserted into the fixing hole.

8. The vertical reduction tank non-cleaning central pipe according to claim 1, characterized in that: The connecting piece is arc-shaped.

9. The vertical reduction tank non-cleaning central pipe according to claim 1, wherein: A plugging head is arranged at the bottom of one of the support bodies.

10. The vertical reduction tank non-cleaning central pipe according to claim 9, characterized in that: The plugging head is conical.

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