Accident flue for flash furnace

Abstract

The utility model relates to the technical field of flash furnaces, in particular to an accident flue for a flash furnace, which comprises a water jacket base, an annular sinking groove is arranged at the upper end of the water jacket base, an annular shaft sleeve is arranged at the upper end of the water jacket base, and the outer diameter of the annular shaft sleeve is matched with the inner diameter of the end of the annular sinking groove. The annular shaft sleeve comprises an inner annular steel plate, an outer annular steel plate is arranged on the outer side of the inner annular steel plate, an annular copper pipe is arranged between the inner annular steel plate and the outer annular steel plate, the annular copper pipe is wound on the outer side of the outer annular steel plate, and the two ends of the annular copper pipe are connected with a water inlet and a water outlet respectively; compared with a common accident flue, the accident flue has the advantages of being stable in structure, easy and convenient to disassemble and assemble, safe in using process, high in cooling strength and long in service life, and solves the problems that due to the fact that a traditional accident flue opening is insufficient in cooling strength, the accident flue opening displaces, the service life is short, flue butt joint sealing is not tight, operation difficulty is large, and the accident flue becomes red.

Description

Technical Field

[0001] This utility model relates to the field of flash furnace technology, specifically to an emergency flue for a flash furnace. Background Technology

[0002] During the flash furnace smelting process, when the boiler system needs to be repaired, the flue gas needs to be switched to the emergency flue. Currently, most factories' flash furnace riser flue emergency flue openings only have a single cylindrical or square water jacket, which is insufficient in cooling strength. Prolonged flue gas flow will cause the refractory bricks around the emergency flue opening to expand, resulting in displacement of the emergency flue opening water jacket. This will cause misalignment of the flue connection when switching flue gas routes, poor sealing, and high operational difficulty. After repeated use, the emergency flue opening water jacket is easily washed away, shortening its service life. Summary of the Invention

[0003] In view of the problems raised in the background art, the present invention provides a solution for an emergency flue for a flash furnace, and the present invention will be further described below.

[0004] An emergency flue for a flash furnace includes a water jacket base, which is cast from molten copper into a mold of four copper tubes. A flue channel is provided in the middle of the water jacket base, and an annular recessed groove is provided at the upper end of the water jacket base. The flue channel and the annular recessed groove are coaxially arranged. An annular bushing is provided at the upper end of the water jacket base. The outer diameter of the annular bushing matches the inner diameter of the annular recessed groove. The annular bushing includes an inner annular steel plate, an outer annular steel plate outside the inner annular steel plate, and an annular copper tube between the inner annular steel plate and the outer annular steel plate. The annular copper tube is wound around the outer annular steel plate, and its two ends are respectively connected to an inlet and an outlet.

[0005] Preferably, a sealing layer is provided on the outer side of the outer annular steel plate, and the sealing layer is made of asbestos;

[0006] Preferably, a sealing device is provided at the upper end of the annular bushing. The sealing device includes an annular sealing ring that matches the annular bushing. A sealing plate is provided at the upper end of the annular sealing ring. The inner diameter of the annular sealing ring matches the outer diameter of the annular bushing.

[0007] Preferably, a right-angle switching flue is also provided at the upper end of the annular bushing;

[0008] Preferably, the right-angle switching flue is sleeved on the outer end of the annular bushing;

[0009] Preferably, the right-angle switching flue includes a right-angle cylinder that is sleeved with the annular bushing, the right-angle cylinder is fixedly connected to the turning cylinder through a bent pipe, and an mounting plate is fixedly provided at the upper end of the right-angle cylinder;

[0010] Preferably, four lifting devices are provided at the upper end of the water jacket base, the sealing plate, and the mounting plate;

[0011] Preferably, the lifting device is hook-shaped;

[0012] Beneficial effects: Compared with the prior art, this utility model has the advantages of stable structure, easy disassembly and assembly, safe use, high cooling intensity and long service life compared with ordinary emergency flues. It solves the problems of insufficient cooling intensity of traditional emergency flue openings leading to displacement of the emergency flue opening, short service life, poor sealing of flue connection, high operation difficulty, and reddening of the emergency flue. Attached Figure Description

[0013] Figure 1 : A schematic diagram of the structure of this utility model;

[0014] Figure 2 This utility model Figure 1 Schematic diagram of the right-angle switching flue structure;

[0015] Figure 3 Another structural schematic diagram of this utility model;

[0016] Figure 4 : Schematic diagram of the annular bushing structure of this utility model;

[0017] In the diagram: 1. Water jacket base; 2. Flue channel; 3. Annular sinking channel; 4. Annular bushing; 4. Inner ring steel plate; 41. Outer ring steel plate; 42. Annular copper pipe; 43. Sealing layer; 44. Sealing device; 5. Annular sealing ring; 51. Sealing plate; 52. Right-angle switching flue; 6. Right-angle cylinder; 61. Bend; 62. Turning cylinder; 63. Mounting plate; 64. Lifting device; 7. Detailed Implementation

[0018] Next, we will combine the appendix Figure 1-4 A specific embodiment of this utility model will be described in detail below.

[0019] An emergency flue for a flash furnace includes a water jacket base 1, which is formed by casting molten copper into a mold containing four copper tubes and then cooling and solidifying it. The four copper tubes inside the water jacket base 1 can effectively cool the base through a coolant, preventing deformation at high temperatures and extending its service life. A flue channel 2 is provided in the middle of the water jacket base 1, and an annular recessed groove 3 is provided at the upper end of the water jacket base 1. The flue channel 2 and the annular recessed groove 3 are coaxially arranged. An annular bushing 4 is provided at the upper end of the water jacket base 1. The outer diameter of the annular bushing 4 matches the inner diameter of the annular sinking groove 3. The annular bushing 4 includes an inner annular steel plate 41, and an outer annular steel plate 42 is provided outside the inner annular steel plate 41. An annular copper tube 43 is provided between the inner annular steel plate 41 and the outer annular steel plate 42. The annular copper tube 43 is wound around the outer annular steel plate 42, and its two ends are respectively connected to a water inlet and a water outlet. The water inlet and the water outlet can be connected to the cooling water on the water jacket base 1, so that the annular copper tube 43 can be cooled.

[0020] In this embodiment, a sealing layer 44 is provided on the outer side of the outer annular steel plate 42. The sealing layer 44 is set as a heat-insulating and sealing material, which can be made of asbestos.

[0021] This application uses the water jacket base 1 and the annular bushing 4 to cool the flue gas in the flue, which has the advantages of high cooling intensity and long service life. It solves the problems of insufficient cooling intensity of traditional emergency flue outlets, resulting in displacement of the emergency flue outlet, short service life, poor sealing of flue connection, high operation difficulty, and reddening of the emergency flue.

[0022] In this application, the water jacket base 1 is located at the top of the rising flue of the flash furnace during use, while the annular bushing 4 is located inside the annular sinking groove 3. The annular sinking groove 3 can limit the annular bushing 4, prevent its displacement, and ensure that the inner cavity of the annular bushing 4 is connected to the flue 2.

[0023] Under normal production conditions, it is necessary to seal the top of the flue to prevent small animals, rainwater, or dust from entering the flue. Based on this, this application provides a sealing device 5 at the upper end of the annular bushing 4. The sealing device 5 includes an annular sealing ring 51 that matches the annular bushing 4. A sealing plate 52 is provided at the upper end of the annular sealing ring 51. The inner diameter of the annular sealing ring 51 matches the outer diameter of the annular bushing 4.

[0024] A right-angle switching flue 6 is also provided at the upper end of the annular bushing 4;

[0025] When an emergency occurs and flue gas route needs to be switched, the user can directly remove the sealing device 5 and then place the right-angle switching flue 6 on the upper end of the annular bushing 4, so that the right-angle switching flue 6 is sleeved on the outer end of the annular bushing 4, thus realizing convenient and quick flue switching.

[0026] The right-angle switching flue 6 includes a right-angle cylinder 61 that is sleeved with the annular bushing 4. The right-angle cylinder 61 is fixedly connected to the turning cylinder 63 through the bent pipe 62. An installation plate 64 is fixedly provided on the upper end of the right-angle cylinder 61.

[0027] When the right-angle switching flue 6 is fitted onto the outer end of the annular bushing 4, the sealing layer 44 is squeezed between the inner wall of the right-angle switching flue 8 and the outer steel plate 51, which plays a sealing role and seals the flue gas.

[0028] Of course, hollow copper tubes can be wrapped around the outside of the right-angle switching flue 6 for water to cool down the right-angle switching flue 6 and prevent it from turning red and burning due to the high temperature flue gas.

[0029] The right-angle switching flue 6 is directly connected to the annular bushing 4 by a sleeve connection, while the other end of the right-angle switching flue 6 is connected to the spray chamber by a flange. A sealing material such as an asbestos gasket can be added to the outer surface of the flange to ensure a sealed connection between the right-angle switching flue 6 and the spray chamber.

[0030] Four lifting devices 7 are provided on the upper ends of the water jacket base 1, the sealing plate 52, and the mounting plate 64. It should be noted that the lifting devices 7 are hook-shaped. The lifting devices 7 are provided to facilitate users to hang the water jacket base 1, the sealing device 5, and the right-angle switching flue 8, and to provide a fixed point for the lifting devices.

[0031] In use, the annular bushing 4 is located inside the annular sink trough 3. The inner cavity of the annular bushing 4 is connected to the flue 2. Under normal production conditions, the sealing device 5 covers the top of the annular bushing 4 to seal it. When an emergency occurs and flue gas route needs to be switched, the user lifts the sealing device 5 away using the lifting device 7 and hangs the right-angle switching flue 6 onto the annular bushing 4, so that the right-angle switching flue 6 is fitted onto the outer end of the annular bushing 4 to achieve flue switching.

[0032] Compared with existing technologies, this utility model has the advantages of stable structure, easy disassembly and assembly, safe use, high cooling intensity, and long service life compared with ordinary emergency flues. It solves the problems of insufficient cooling intensity at the inlet of traditional emergency flues, which leads to displacement of the inlet, short service life, poor sealing of flue connections, high operation difficulty, and reddening of the emergency flue.

[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An emergency flue for a flash furnace, characterized in that: The system includes a water jacket base (1), which is cast from molten copper into a mold of four copper pipes. A flue channel (2) is provided in the middle of the water jacket base (1), and an annular sinking groove (3) is provided at the upper end of the water jacket base (1). The flue channel (2) and the annular sinking groove (3) are coaxially arranged. An annular bushing (4) is provided at the upper end of the water jacket base (1). The outer diameter of the annular bushing (4) matches the inner diameter of the end of the annular sinking groove (3). The annular bushing (4) includes an inner annular steel plate (41), and an outer annular steel plate (42) is provided outside the inner annular steel plate (41). An annular copper pipe (43) is provided between the inner annular steel plate (41) and the outer annular steel plate (42). The annular copper pipe (43) is wound around the outer annular steel plate (42), and its two ends are respectively connected to the inlet and outlet.

2. The emergency flue for a flash furnace according to claim 1, characterized in that: A sealing layer (44) is provided on the outside of the outer annular steel plate (42), and the sealing layer (44) is made of asbestos.

3. An emergency flue for a flash furnace according to claim 2, characterized in that: A sealing device (5) is provided at the upper end of the annular bushing (4). The sealing device (5) includes an annular sealing ring (51) that matches the annular bushing (4). A sealing plate (52) is provided at the upper end of the annular sealing ring (51). The inner diameter of the annular sealing ring (51) matches the outer diameter of the annular bushing (4).

4. An emergency flue for a flash furnace according to claim 3, characterized in that: A right-angle switching flue (6) is also provided at the upper end of the annular bushing (4).

5. An emergency flue for a flash furnace according to claim 4, characterized in that: The right-angle switching flue (6) is sleeved on the outer end of the annular bushing (4).

6. An emergency flue for a flash furnace according to claim 5, characterized in that: The right-angle switching flue (6) includes a right-angle cylinder (61) that is sleeved with the annular bushing (4). The right-angle cylinder (61) is fixedly connected to the turning cylinder (63) through the bent pipe (62). An installation plate (64) is fixedly provided on the upper end of the right-angle cylinder (61).

7. An emergency flue for a flash furnace according to claim 6, characterized in that: Four lifting devices (7) are provided on the upper ends of the water jacket base (1), the sealing plate (52), and the mounting plate (64).

8. An emergency flue for a flash furnace according to claim 7, characterized in that: The lifting device (7) is hook-shaped.

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