Batching device

Abstract

The utility model relates to a batching device, and relates to the technical field of steel-making converters, the batching device comprises a wear-resistant cylinder fixedly connected to the converter, a plurality of cooling sleeves are arranged in the wear-resistant cylinder in a penetrating manner, the cooling sleeves are arranged around the axis of the wear-resistant cylinder, a water distribution header and a collection header are arranged around the wear-resistant cylinder, and the water distribution header and the collection header are communicated with the wear-resistant cylinder. The water distribution header is fixedly connected and communicated with a water inlet pipe, the collection header is fixedly connected and communicated with a water outlet pipe, the water inlet end of the cooling sleeve is communicated with the water distribution header, and the water outlet end of the cooling sleeve is communicated with the collection header. The batching device has the effect of prolonging the service life of the batching device.

Description

Technical Field

[0001] The present application relates to the technical field of steel-making converters, and in particular to a batching device. Background Art

[0002] BOF smelting is a major steelmaking method and is widely used in global steel production, accounting for more than 70% of the world's steel production.

[0003] During the converter smelting process, various bulk materials are added into the converter from the high-level silo. It is necessary to open a hole in the side wall above the converter and set a batching device such as a feed chute at the opening. The materials enter the converter through the batching device.

[0004] In the related art, in order to increase the service life of the material chute, a wear-resistant layer is usually set on the side wall of the material chute and cooled by water. However, the working environment of the material chute is very harsh, and its working temperature can reach a very high level and will fluctuate periodically. The added materials are mostly hard materials such as alloys, returned ore, scrap steel, etc., which will continuously wear the inner surface of the chute. Although a wear-resistant layer is set, the wear-resistant layer is mostly welded. On the one hand, the wear-resistant layer may have welding defects. On the other hand, under the influence of multiple factors such as continuous impact, wear, thermal fatigue, etc., the life of the wear-resistant layer is greatly reduced, resulting in the material chute. Frequent water leakage is very likely to cause production safety accidents, which not only affects the strength of the wear-resistant layer but may also cause cracks in the connection between the discharge chute and the converter, thereby affecting the service life of the batching device. There are also buried pipe casting discharge chutes, which are usually serpentine coils buried in the casting structure. The discharge chute of this structure has an extremely complicated manufacturing process and needs to be cooled by water during casting. Once the coil leaks during casting, a violent explosion will occur, causing a major production safety accident, and the yield rate is extremely low. Therefore, it is necessary to develop a new type of batching device with a simple and safe manufacturing process, a high yield rate, and a better use effect. Utility Model Content

[0005] In order to improve the safety of the batching device, the present application provides a batching device.

[0006] The present application provides a batching device that adopts the following technical solution:

[0007] A batching device comprises a wear-resistant cylinder fixedly connected to the converter, a plurality of cooling sleeves are passed through the wear-resistant cylinder, the cooling sleeves are arranged around the axis of the wear-resistant cylinder, a water distribution manifold and a collecting manifold are arranged around the wear-resistant cylinder, a water inlet pipe is fixedly connected to and communicated with the water distribution manifold, a water outlet pipe is fixedly connected to and communicated with the collecting manifold, a water inlet end of the cooling sleeve is connected to the water distribution manifold, and a water outlet end of the cooling sleeve is connected to the collecting manifold.

[0008] By adopting the above technical solution, cooling water can be added to the water distribution manifold through the water inlet pipe, and then the water distribution manifold will evenly transport water to each cooling jacket. The cooling water will cool the wear-resistant cylinder during the flow in the cooling jacket, and then the cooling water will be concentrated through the collecting manifold and discharged through the water outlet pipe. In this way, the wear-resistant cylinder in the batching device is cooled and the material temperature is controlled, thereby ensuring the wear resistance and high temperature resistance of the wear-resistant cylinder. At the same time, the thermal stress of the wear-resistant cylinder can be reduced, the service life of the batching device is increased, the accident rate is reduced, and the adaptability of the batching device to various hard materials is improved. In addition, this structure reduces the complexity of the batching device and improves safety and yield rate.

[0009] Optionally, the cooling sleeve includes an external sleeve, an inner tube and a sealing plate, the bottom tube of the external sleeve is embedded in the wear-resistant cylinder, the sealing plate is fixedly connected to and seals the upper end of the external sleeve, the inner tube passes through the sealing plate and is placed in the external sleeve, the diameter of the inner tube is smaller than the diameter of the external sleeve, the inner tube is coaxially arranged with the external sleeve, there is a gap between the lower end of the inner tube and the bottom end of the external sleeve, the upper parts of the external sleeve and the inner tube are exposed outside the wear-resistant cylinder, the upper part of the external sleeve is fixedly connected to and connected with the collecting manifold, and the upper end of the inner tube is fixedly connected to and connected with the water distribution manifold.

[0010] By adopting the above technical solution, the cooling water entering the cooling jacket will enter the bottom of the outer jacket through the inner insert, and then the cooling water will gradually move upward along the outer jacket and enter the collecting manifold. Thus, the cooling will pass through the entire cooling jacket, which can improve the uniformity of the cooling water flowing in the cooling jacket, thereby ensuring the cooling efficiency of the wear-resistant cylinder by the cooling water.

[0011] Optionally, the outer casing is configured as a seamless steel pipe and has a cap at its bottom end.

[0012] By adopting the above technical solution, the bottom end of the external casing can be sealed by the sealing head, thereby improving the strength of the bottom of the external casing.

[0013] Optionally, a wear-resistant sleeve is fixedly connected to the upper end of the wear-resistant cylinder.

[0014] By adopting the above technical solution, the upper edge of the wear-resistant cylinder can be protected by the wear-resistant sleeve, thereby reducing the wear of the wear-resistant cylinder when the material enters the wear-resistant cylinder and increasing the service life of the wear-resistant cylinder.

[0015] Optionally, the wear-resistant cylinder and the wear-resistant sleeve are fixedly connected by flange bolt connection or welding.

[0016] By adopting the above technical solution, the wear-resistant sleeve can be fixed on the wear-resistant cylinder more firmly through flange bolt connection or welding.

[0017] Optionally, the collecting manifold and the water distribution manifold are both arranged in an annular shape, and are coaxially arranged with the wear-resistant cylinder. The collecting manifold and the water distribution manifold are both threaded with a plurality of plugs, the plugs are connected to the interior of the collecting manifold or the water distribution manifold, the plugs are arranged around the axis of the wear-resistant cylinder, the plugs on the collecting manifold correspond one-to-one with the external sleeve, and the plugs on the water distribution manifold correspond one-to-one with the internal insert.

[0018] By adopting the above technical solution, when a cooling sleeve is damaged, the plug at the corresponding position can be rotated to separate the plug from the water distribution manifold and the collecting manifold, and then the upper part of the inner tube and the upper part of the outer sleeve can be sealed by the sealing piece.

[0019] Optionally, threads are provided on the inner arc surface of the upper end of the outer sleeve and on the inner arc surface of the upper end of the inner insert tube.

[0020] By adopting the above technical solution, a screw plug that matches the threads on the inner arc surface of the external sleeve and the inner arc surface of the inner tube can be used, and the screw plug can be extended from the water distribution manifold or the collecting manifold into the upper part of the external sleeve or the inner tube and screwed in to fix it, thereby quickly achieving the plugging of the external sleeve and the inner tube.

[0021] Optionally, the lower portion of the external sleeve is exposed outside the wear-resistant cylinder, and a wear-resistant block is fixedly connected to the arc-shaped side wall of the external sleeve exposed outside the wear-resistant cylinder.

[0022] By adopting the above technical solution, since the impact force of the material on the bottom of the wear-resistant cylinder is relatively small, by arranging the wear-resistant block at the bottom of the external sleeve, most of the costs can be saved while achieving good protection effect.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The wear-resistant cylinder in the batching device can be cooled down and the material temperature can be controlled, thereby ensuring the wear resistance and high temperature resistance of the wear-resistant cylinder. At the same time, the thermal stress of the wear-resistant cylinder can be reduced, the service life of the batching device can be increased, the accident rate can be reduced, and the adaptability of the batching device to various hard materials can be improved. In addition, the structure reduces the difficulty of production, improves safety and yield rate, and thus reduces production costs;

[0025] 2. The cooling will pass through the entire cooling jacket, which can improve the uniformity of the cooling water flowing in the cooling jacket, thereby ensuring the cooling efficiency of the wear-resistant cylinder by the cooling water;

[0026] 3. When a cooling sleeve is damaged, the plug at the corresponding position can be rotated to separate the plug from the water distribution manifold and the collecting manifold, and then the upper part of the inner tube and the upper part of the outer sleeve can be sealed by the sealing piece.

[0027] 4. When the outer sleeve and the wear-resistant cylinder are cast or forged and then interference fitted, the wear-resistant cylinder and the outer sleeve are in close contact and are not integrated. After the wear-resistant sleeve is damaged by impact, wear, and thermal fatigue under harsh working conditions, various cracks and damages of the wear-resistant sleeve will not extend to the cooling sleeve, which greatly increases the service life and the safety of the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application;

[0029] Figure 2 is a schematic structural diagram of a cooling jacket in an embodiment of the present application;

[0030] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure of part A;

[0031] Figure 4 It is a schematic diagram of the overall structure of Example 2 of the present application.

[0032] In the figure, 1, wear-resistant cylinder; 2, cooling sleeve; 21, external sleeve; 211, water outlet branch pipe; 22, inner insert pipe; 23, sealing plate; 3, water distribution manifold; 31, water inlet pipe; 4, collecting manifold; 41, water outlet pipe; 5, wear-resistant sleeve; 6, plug; 7, wear-resistant block. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1 -Attached Figure 2 , further details of this application are given.

[0034] Example 1

[0035] A batching device, referring to Figure 1 and Figure 2 The invention comprises a wear-resistant cylinder 1 fixedly connected to the converter, wherein the wear-resistant cylinder 1 is obliquely arranged on the converter. A plurality of cooling sleeves 2 are arranged in the wear-resistant cylinder 1. The cooling sleeves 2 are arranged equidistantly around the axis of the wear-resistant cylinder 1.

[0036] Reference Figure 1 , Figure 2 and Figure 3The cooling sleeve 2 includes an external sleeve 21, an internal insert pipe 22 and a sealing plate 23. The bottom tube of the external sleeve 21 is embedded in the wear-resistant cylinder 1. In this embodiment, the external sleeve 21 is configured as a seamless steel pipe and has a sealing head at its bottom end. The upper part of the external sleeve 21 is exposed outside the wear-resistant cylinder 1. The sealing plate 23 is fixedly connected and sealed at the upper end of the external sleeve 21. The internal insert pipe 22 passes through the sealing plate 23 and is placed in the external sleeve 21, and the internal insert pipe 22 is fixedly connected to the sealing plate 23. The diameter of the internal insert pipe 22 is smaller than the diameter of the external sleeve 21 and the internal insert pipe 22 is coaxially arranged with the external sleeve 21. There is a gap between the lower end of the internal insert pipe 22 and the bottom end of the external sleeve 21, and the upper part of the internal insert pipe 22 is exposed outside the wear-resistant cylinder 1.

[0037] A water distribution header 3 and a collection header 4 are arranged around the wear-resistant cylinder 1. The collection header 4 and the water distribution header 3 are both arranged in an annular shape, and the collection header 4 is placed below the water distribution header 3. The collection header 4 and the water distribution header 3 are both arranged coaxially with the wear-resistant cylinder 1. The water distribution header 3 is fixedly connected and connected with an inlet pipe 31 for supplying water to the water distribution header 3. The collection header 4 is fixedly connected and connected with an outlet pipe 41 for discharging water from the collection header 4.

[0038] The outer sleeve 21 includes a water outlet branch pipe 211 on the upper side wall of the outer sleeve 21, one end of which is fixedly connected and connected to the water outlet branch pipe 211 on the upper side wall thereof, and one end of the water outlet branch pipe 211 away from the outer sleeve 21 is fixedly connected and connected to the collection header 4. The outer sleeve 21 is fixedly connected and connected to the collection header 4 through the water outlet branch pipe 211. The upper end of the inner insert pipe 22 is inclined toward the water distribution header 3 and is fixedly connected and connected to the water distribution header 3.

[0039] Thus, cooling water can be added to the water distribution manifold 3 through the water inlet pipe 31, and then the water distribution manifold 3 will evenly transport water to each inner insert pipe 22, and then the cooling water entering the inner insert pipe 22 will enter the bottom of the outer sleeve 21 from top to bottom, and then the cooling water will gradually move upward along the outer sleeve 21, enter the collection manifold 4, and be discharged through the water outlet pipe 41. Thus, the cooling water will pass through the entire cooling sleeve 2, and cool the wear-resistant cylinder 1 during the flow.

[0040] A plurality of plugs 6 are threadedly connected on the arc-shaped outer wall of the collection header 4 and the arc-shaped outer wall of the water distribution header 3. The plugs 6 are connected to the inside of the collection header 4 or the water distribution header 3. The plugs 6 are equidistantly arranged around the axis of the wear-resistant cylinder 1. The plugs 6 on the collection header 4 correspond to the external sleeve 21 one by one, and the plugs 6 on the water distribution header 3 correspond to the internal insert 22 one by one. Threads are provided on the inner arc surface of the upper end of the water outlet branch pipe 211 in the external sleeve 21 and the inner arc surface of the upper end of the internal insert 22.

[0041] When a cooling sleeve 2 is damaged, the plug 6 at the corresponding position can be rotated to disengage the plug 6 at the corresponding position from the water distribution manifold 3 and the collecting manifold 4, and then the upper part of the inner tube 22 and the upper part of the water outlet branch pipe 211 in the outer sleeve 21 are sealed by a screw plug whose threads match those on the inner arc surface of the outer sleeve 21 and the inner arc surface of the inner tube 22.

[0042] The upper end of the wear-resistant cylinder 1 is fixedly connected with a wear-resistant sleeve 5. The wear-resistant sleeve 5 is arranged along the upper edge of the wear-resistant cylinder 1. In this embodiment, the wear-resistant cylinder 1 and the wear-resistant sleeve 5 are fixedly connected by bolt connection realized by a connecting flange or by welding.

[0043] The wear-resistant cylinder 1 in this embodiment is a cast or forged structure. When it is a cast structure, the external sleeve 21 is placed in the casting mold in advance during casting and cast together with the wear-resistant cylinder 1. When it is a forged structure, after the wear-resistant cylinder 1 is forged, a hole is opened according to the distribution position of the external sleeve 21. After the external sleeve 21 passes through the processed hole through an interference fit, other manufacturing processes are carried out.

[0044] The outer sleeve 21 in the wear-resistant cylinder 1 in the present application is a straight tube, so it can be manufactured by both casting and forging processes. When the casting process is adopted, the outer sleeve 21 is placed in the casting mold in advance and cast together with the wear-resistant cylinder 1. Because the outer sleeve 21 is a straight tube, it does not need to be cooled by water. It only needs to fill special sand in the straight tube. After casting, the sand in the outer sleeve 21 can be vibrated out by knocking and vibration, and then other structures such as the inner insert 22 and the sealing plate 23 are welded; when the forging process is adopted, after the wear-resistant cylinder 1 is forged, a hole is opened on the wear-resistant cylinder 1 according to the distribution of the outer sleeve 21, and the outer sleeve 21 is inserted into the wear-resistant cylinder 1 through interference fit, and then other structures such as the inner insert 22 and the sealing plate 23 are welded.

[0045] The implementation principle of the embodiment of the present application is: cooling water can be added to the water distribution manifold 3 through the water inlet pipe 31, and then the water distribution manifold 3 will evenly transport the water to each cooling jacket 2. The cooling water cools the wear-resistant cylinder 1 during the flow in the cooling jacket 2.

[0046] Example 2

[0047] The difference from Example 1 is that the lower part of the external sleeve 21 is exposed outside the wear-resistant cylinder 1, and multiple wear-resistant blocks 7 are fixedly connected to the arc-shaped side wall of the external sleeve 21 exposed outside the wear-resistant cylinder 1, and the multiple wear-resistant blocks 7 are arranged along the length direction of the external sleeve 21.

[0048] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A batching device, characterized in that: The invention comprises a wear-resistant cylinder (1) fixedly connected to a converter, wherein a plurality of cooling sleeves (2) are inserted into the wear-resistant cylinder (1), wherein the cooling sleeves (2) are arranged around the axis of the wear-resistant cylinder (1), and a water distribution manifold (3) and a collecting manifold (4) are arranged around the wear-resistant cylinder (1), wherein a water inlet pipe (31) is fixedly connected to and communicated with the water distribution manifold (3), and a water outlet pipe (41) is fixedly connected to and communicated with the collecting manifold (4), wherein the water inlet end of the inner insert pipe (22) of the cooling sleeve (2) is connected to the water distribution manifold (3), and the water outlet end of the outer sleeve (21) of the cooling sleeve (2) is connected to the collecting manifold (4).

2. A batching device according to claim 1, characterized in that: The cooling sleeve (2) comprises an outer sleeve (21), an inner insert pipe (22) and a sealing plate (23); the bottom tube of the outer sleeve (21) is embedded in the wear-resistant cylinder (1); the sealing plate (23) is fixedly connected to and seals the upper end of the outer sleeve (21); the inner insert pipe (22) passes through the sealing plate (23) and is placed in the outer sleeve (21); the diameter of the inner insert pipe (22) is smaller than the diameter of the outer sleeve (21). The inner tube (22) is coaxially arranged with the outer sleeve (21); a gap exists between the lower end of the inner tube (22) and the bottom end of the outer sleeve (21); the upper parts of the outer sleeve (21) and the inner tube (22) are both exposed outside the wear-resistant cylinder (1); the upper part of the outer sleeve (21) is fixedly connected to and communicated with the collecting manifold (4); and the upper end of the inner tube (22) is fixedly connected to and communicated with the water distribution manifold (3).

3. A batching device according to claim 2, characterized in that: The outer casing (21) is configured as a seamless steel pipe and has a sealing head at its bottom end.

4. A batching device according to claim 3, characterized in that: A wear-resistant sleeve (5) is fixedly connected to the upper end of the wear-resistant cylinder (1).

5. A batching device according to claim 4, characterized in that: The wear-resistant cylinder (1) and the wear-resistant sleeve (5) are fixedly connected by threaded connection or welding.

6. A batching device according to claim 2, characterized in that: The collecting manifold (4) and the water distribution manifold (3) are both arranged in an annular shape, and are coaxially arranged with the wear-resistant cylinder (1). The collecting manifold (4) and the water distribution manifold (3) are both threadedly connected with a plurality of plugs (6), the plugs (6) being connected to the inside of the collecting manifold (4) or the water distribution manifold (3), and the plugs (6) are arranged around the axis of the wear-resistant cylinder (1). The plugs (6) on the collecting manifold (4) correspond one-to-one to the external sleeve (21), and the plugs (6) on the water distribution manifold (3) correspond one-to-one to the internal insert (22).

7. A batching device according to claim 6, characterized in that: The inner arc surface at the upper end of the outer sleeve (21) and the inner arc surface at the upper end of the inner insert tube (22) are both provided with threads.

8. A batching device according to claim 2, characterized in that: The lower part of the external sleeve (21) is exposed outside the wear-resistant cylinder (1), and a wear-resistant block (7) is fixedly connected to the arc-shaped side wall of the external sleeve (21) exposed outside the wear-resistant cylinder (1).

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