A steam injection device for sintering material surface

Abstract

This utility model relates to a steam injection device for sintering material surface, belonging to the technical field of sintering production equipment in the metallurgical industry. The technical solution is as follows: a flue gas circulation hood (1) is fixed on the side plate of the sintering machine trolley (2), and several steam branch pipes (7) are provided above the sintering machine trolley (2). Each steam branch pipe (7) is provided with a nozzle (8) facing the material surface of the sintering machine trolley. The two ends of the steam branch pipe (7) are rotatably connected to the flue gas circulation hood (1) through a slot (9). The steam branch pipe (7) is connected to the steam main pipe (3) through a metal hose (6), a connecting pipe (4), and a steam main pipe (3). The steam main pipe (3) is fixed to one side of the flue gas circulation hood (1). The steam main pipe (3) is fixed to one side of the flue gas circulation hood (1) through a bracket (10). The beneficial effect of this utility model is that it can cope with the failure of sudden rise of the sintering material surface without increasing the brackets on both sides of the sintering machine, and finally achieve uniform and effective steam injection.

Description

Technical Field

[0001] This utility model relates to a steam injection device for sintering material surface, belonging to the technical field of sintering production equipment in the metallurgical industry. Background Technology

[0002] The sintering process generates a large amount of CO due to the incomplete combustion of carbon. CO emissions not only pollute the environment but also represent a waste of energy. By using steam injection technology on the sintering surface, the dependence of the carbon combustion process on oxygen can be reduced, CO emissions can be reduced, and coal consumption can be decreased while improving the quality of sintered ore.

[0003] Currently, the steam injection device for sintering material surface is equipped with brackets on both sides of the trolley to fix and support the steam pipes. However, when the material feeding of the sintering machine malfunctions and the material surface is higher than the normal production conditions, the steam pipes fixed on the brackets may collide with the material on the trolley, which may cause damage to the steam injection device, steam leakage, or even injury accidents.

[0004] Chinese utility model patent CN217604670U describes an improvement to the steam injection device on the sintering material surface, which adds a hoisting device to adjust the height of the steam injection device online. However, this device increases the width of the sintering machine system and is not suitable for sintering systems that already use flue gas recirculation technology. Utility Model Content

[0005] The purpose of this invention is to provide a steam injection device for sintering material surface, which can cope with the failure of sudden rise of sintering material surface without increasing the support on both sides of the sintering machine, and ultimately achieve uniform and effective steam injection, thus solving the problems existing in the background technology.

[0006] The technical solution of this utility model is:

[0007] A steam injection device for sintering material surface includes a flue gas circulation hood, a sintering machine trolley, a steam main pipe, a connecting pipe, a metal hose, steam branch pipes, nozzles, and a slot. The flue gas circulation hood is fixed to the side plate of the sintering machine trolley. Several steam branch pipes are provided above the sintering machine trolley, and each steam branch pipe is provided with a nozzle facing the material surface of the sintering machine trolley. The two ends of the steam branch pipes are rotatably connected to the flue gas circulation hood through the slots. The steam branch pipes are connected to the steam main pipe through the metal hose, the connecting pipe, and the steam main pipe. The steam main pipe is fixed to one side of the flue gas circulation hood.

[0008] The sintering machine trolley has several steam branch pipes above it, with nozzles on adjacent steam branch pipes arranged alternately.

[0009] The nozzle is a long metal tube with one end flattened to half the diameter. The nozzle is vertically welded to the steam branch pipe, with the flat side facing downwards and perpendicular to the running direction of the sintering machine trolley.

[0010] The slot is a circular hole set on the flue gas circulation hood, and the diameter of the circular hole matches the diameter of the steam branch pipe.

[0011] The slot is located 150-250mm above the side panel of the sintering machine trolley.

[0012] The connecting pipe is equipped with a regulating valve.

[0013] The main steam pipe is fixed to one side of the flue gas circulation hood via a bracket.

[0014] The beneficial effects of this utility model are: it solves the problem of collision between the material surface and the steam branch pipe when the material surface of the sintering machine rises, and at the same time, the steam branch pipe is easy to disassemble and install, and can be easily replaced online, thus achieving the purpose of uniform steam spraying on the material surface. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] In the diagram: 1. Flue gas circulation hood; 2. Sintering machine trolley; 3. Steam main pipe; 4. Connecting pipe; 5. Regulating valve; 6. Metal hose; 7. Steam branch pipe; 8. Nozzle; 9. Slot; 10. Support. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and examples.

[0018] See attached document Figure 1 A steam injection device for sintering material surface includes a flue gas circulation hood 1, a sintering machine trolley 2, a steam main pipe 3, a connecting pipe 4, a metal hose 6, steam branch pipes 7, nozzles 8, and a slot 9. The flue gas circulation hood 1 is fixed to the side plate of the sintering machine trolley 2. Several steam branch pipes 7 are provided above the sintering machine trolley 2. Each steam branch pipe 7 is provided with a nozzle 8 facing the material surface of the sintering machine trolley. The two ends of the steam branch pipes 7 are rotatably connected to the flue gas circulation hood 1 through the slot 9. The steam branch pipes 7 are connected to the steam main pipe 3 through the metal hose 6 and the connecting pipe 4. The steam main pipe 3 is fixed to one side of the flue gas circulation hood 1.

[0019] In this embodiment, refer to the appendix Figure 1 The device includes a flue gas circulation hood 1, a sintering machine trolley 2, a main steam pipe 3, a connecting pipe 4, a regulating valve 5, a metal hose 6, a steam branch pipe 7, a nozzle 8, a slot 9, and a bracket 10, wherein:

[0020] The steam main pipe 3 is fixed to one side of the flue gas circulation hood 1. A connecting pipe 4 is welded to the steam main pipe 3. A regulating valve 5 is installed on the connecting pipe 4. The connecting pipe 4 is connected to the steam branch pipe 7 through a metal flexible hose 6. The steam branch pipe 7 is placed in the slot 9 of the flue gas circulation hood 1. The steam branch pipe 7 is equipped with a nozzle 8.

[0021] Steam main pipe 3 is Φ159, steam branch pipe 7 is Φ42, and nozzle is Φ8.

[0022] The connection between the metal hose 6 and the connecting pipe 4 and the steam branch pipe 7 is a lever-type quick coupling.

[0023] The regulating valve 5 is 0.5 meters away from the edge of the trolley and 1.5 meters above the sintering machine platform.

[0024] Steam branch pipe 7 includes two types: steam branch pipe A and steam branch pipe B. Steam branch pipe A is equipped with 8 nozzles, positioned at distances of 0.55m, 1.10m, 1.65m, 2.20m, 2.75m, 3.30m, 3.85m, and 4.40m from the edge of the sintering machine. Steam branch pipe B is equipped with 9 nozzles, positioned at distances of 0.30m, 0.85m, 1.40m, 1.95m, 2.50m, 3.05m, 3.60m, 4.15m, and 4.70m from the edge of the sintering machine. Steam branch pipes A and B are arranged alternately on the sintering machine trolley 2.

[0025] The slot 9 is a circular hole on the flue gas circulation hood 1, located 200mm from the sintering machine trolley side panel, with a diameter of 50mm. The steam branch pipe 7 can rotate within the slot 9 for easy disassembly and assembly. If the sintering machine trolley material feeding suddenly rises and touches the nozzle due to a malfunction, the steam branch pipe 7 will rotate to prevent damage to the steam device.

[0026] Nozzle 8 is a 100mm long metal tube with one end flattened to 1 / 2 of its diameter. Nozzle 8 is vertically welded to steam branch pipe 7, with the flat side facing down and perpendicular to the running direction of sintering machine trolley 2.

Claims

1. A sinter bed face steam injection device characterized by: The system includes a flue gas circulation hood (1), a sintering machine trolley (2), a steam main pipe (3), a connecting pipe (4), a metal hose (6), steam branch pipes (7), nozzles (8), and a slot (9). The flue gas circulation hood (1) is fixed on the side plate of the sintering machine trolley (2). Several steam branch pipes (7) are provided above the sintering machine trolley (2). Each steam branch pipe (7) is provided with a nozzle (8) facing the material surface of the sintering machine trolley. The two ends of the steam branch pipes (7) are rotatably connected to the flue gas circulation hood (1) through the slot (9). The steam branch pipes (7) are connected to the steam main pipe (3) through the metal hose (6), the connecting pipe (4), and the steam main pipe (3). The steam main pipe (3) is fixed on one side of the flue gas circulation hood (1).

2. A sinter bed face steam injection device according to claim 1, characterised in that: The sintering machine trolley (2) has several steam branch pipes (7) above it, wherein the nozzles (8) on two adjacent steam branch pipes (7) are arranged alternately.

3. A sinter bed face steam injection apparatus according to claim 2, characterised in that: The nozzle (8) is a long metal tube with one end flattened to half the diameter. The nozzle (8) is vertically welded to the steam branch pipe (7), with the flat side facing down and perpendicular to the running direction of the sintering machine trolley (2).

4. A sinter bed face steam injection apparatus according to claim 1, characterised in that: The slot (9) is a circular hole set on the flue gas circulation hood (1), and the diameter of the circular hole matches the diameter of the steam branch pipe (7).

5. A sinter bed face steam injection apparatus according to claim 4, characterised in that: The slot (9) is located 150-250mm above the side panel of the sintering machine trolley (2).

6. A sinter bed face steam injection apparatus according to claim 1, characterised in that: The connecting pipe (4) is equipped with a regulating valve (5).

7. A sinter bed face steam injection apparatus according to claim 1, characterised in that: The steam main pipe (3) is fixed to one side of the flue gas circulation hood (1) by a bracket (10).

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