Metallurgical furnace top smoke hood

Abstract

The utility model discloses a top smoke hood of a metallurgical furnace. The top smoke hood comprises a frame body, the main smoke pipe is mounted on the frame body and is used for conveying smoke; the first smoke hood is mounted on the main smoke pipe and is of a hollow structure with two communicated ends, one end of the first smoke hood is communicated with the main smoke pipe, and the other end of the first smoke hood is used for discharging smoke corresponding to a feeding hole of the metallurgical furnace; the second smoke hood is of a hollow structure with two communicated ends, one end of the second smoke hood is communicated with the main smoke pipe, and the other end of the second smoke hood discharges smoke corresponding to a slag discharge port of the metallurgical furnace; one end of the chilling smoke hood is communicated with the main smoke pipe, and the other end of the chilling smoke hood is correspondingly mounted on a chilling ring on the metallurgical furnace for discharging smoke. A pneumatic flap valve; and a pneumatic control valve. The first smoke hood, the second smoke hood and the chilling smoke hood can be used for exhausting smoke overflowing from the feeding port, the slag discharging port and the copper outlet respectively, so that the smoke can be exhausted in time, overflowing of the smoke is reduced, and the working environment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of smoke hood, more specifically, relate to a metallurgical furnace kiln top smoke hood. BACKGROUND

[0002] Metallurgical furnace is the important equipment for metal material heat processing in metallurgical industry, and they are mainly used for metal smelting, refining, casting, heat treatment and multiple production links.

[0003] In the production process of tilting furnace, the smoke overflowed when charging, slagging and copper discharging at the charging port, slagging port and copper discharging port. The cooling ring is not completely closed, and the smoke overflowed during operation cannot enter the ring smoke hood. UTILITY MODEL CONTENT

[0004] In view of the problems in the prior art, the utility model aims at providing a smoke hood capable of discharging smoke from the charging port, slagging port and copper discharging port of the tilting furnace.

[0005] In order to solve the above problems, the utility model adopts the following technical scheme. A metallurgical furnace kiln top smoke hood comprises a frame body, a main smoke pipe installed on the frame body for transmitting smoke, a first smoke hood installed on the main smoke pipe and having at least one hollow structure with both ends communicating, one end of the first smoke hood being communicated with the main smoke pipe and the other end discharging smoke corresponding to the feeding port of the metallurgical furnace, a second smoke hood having a hollow structure with both ends communicating, one end of the second smoke hood being communicated with the main smoke pipe and the other end discharging smoke corresponding to the slagging port of the metallurgical furnace, a cooling smoke hood having one end communicated with the main smoke pipe and the other end installed on the cooling ring of the metallurgical furnace for discharging smoke, a pneumatic flap valve installed on the first smoke hood and the second smoke hood for opening and closing the interiors of the first smoke hood and the second smoke hood, and a pneumatic regulating valve installed on the cooling smoke hood for opening and closing the interior of the cooling smoke hood.

[0006] Preferably, the main smoke pipe is a long strip square pipe.

[0007] Preferably, an opening is formed in the outer side of the first smoke hood close to the bottom, and a cover plate is movably installed on the opening; a driver for moving the cover plate to open and close the opening is further installed on the first smoke hood.

[0008] Preferably, a secondary smoke pipe is transversely and vertically installed on the main smoke pipe, a cooling smoke pipe is transversely and vertically installed on the secondary smoke pipe, and the cooling smoke hood is installed on the cooling smoke pipe.

[0009] Preferably, the cooling smoke hood has an open annular smoking port with an interior cavity communicating with the smoking port, and the top is mounted on the cooling smoke tube, which is in communication with the cavity.

[0010] Preferably, the first and second smoke hoods are shaped such that one end is connected to the main smoke pipe and the other end is bent downwards.

[0011] Preferably, the main flue is connected to a smoke extraction pipe.

[0012] Compared with the prior art, the advantages of this utility model are as follows:

[0013] The first fume hood, the second fume hood, and the quenching fume hood can respectively exhaust the flue gas overflowing from the feed port, slag discharge port, and copper outlet, thereby removing the flue gas in a timely manner, reducing the overflow of flue gas, and improving the working environment.

[0014] The pneumatic flap valve can close and seal the interior of the first and second smoke hoods; the pneumatic regulating valve can close and seal the interior of the quench smoke hood; thus, during each stage of smoke exhaust, other smoke hoods that do not exhaust smoke can be closed accordingly, thereby reducing the leakage of smoke. Attached Figure Description

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

[0016] Explanation of the labels in the diagram:

[0017] 1. Cooling smoke hood; 2. Cooling smoke pipe; 3. Secondary smoke pipe; 4. Pneumatic flap valve; 5. Smoke extraction pipe; 6. Main smoke pipe; 7. Frame; 8. First smoke hood; 9. Cover plate; 10. Driver; 11. Smoke inlet; 12. Second smoke hood; 13. Pneumatic regulating valve. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] A top fume hood for a metallurgical furnace includes: a frame 7; a main flue 6 mounted on the frame 7 for transmitting flue gas; a first fume hood 8, mounted on the main flue 6 (at least one), which is a hollow structure with both ends connected, one end of the first fume hood 8 connected to the main flue 6, and the other end corresponding to the feed inlet of the metallurgical furnace for exhaust; a second fume hood 12, which is a hollow structure with both ends connected, one end of the second fume hood 12 connected to the main flue 6, and the other end corresponding to the slag discharge port of the metallurgical furnace for exhaust; a quenching fume hood 1, one end connected to the main flue 6, and the other end corresponding to a quenching ring mounted on the metallurgical furnace for exhaust; a pneumatic flap valve 4, mounted on the first fume hood 8 and the second fume hood 12 to open and close the interior of the first fume hood 8 and the second fume hood 12; and a pneumatic regulating valve 13, mounted on the quenching fume hood 1 to open and close the interior of the quenching fume hood 1. Understandably, the tilting furnace includes a feed inlet, a slag discharge outlet, and a copper outlet. A quenching ring is installed at the copper outlet, which is a water-cooled structure surrounding the copper outlet. This utility model is installed on top of the tilting furnace, so the entire frame 7 is also installed on top of the tilting furnace. The frame 7 is a support structure and can be constructed by overlapping multiple steel plates. The number of first fume hoods 8 corresponds to the number of feed inlets; one first fume hood 8 corresponds to one feed inlet. The pneumatic flap valve 4, also commonly known as a pneumatic butterfly valve, is a device that controls the opening and closing of a valve through air pressure and is existing technology. The pneumatic flap valve 4 is suitable for large-diameter pipes. Since the diameters of the first fume hood 8 and the second fume hood are relatively large, the pneumatic flap valve 4 is more suitable here. The pneumatic regulating valve 13 is one of the commonly used actuators in industrial automatic control systems, mainly used for precise control of fluid flow, pressure, or liquid level parameters. Here, the diameter of the top of the quenching fume hood 1 is relatively small, so only the pneumatic regulating valve 13 is needed. Of course, the main smoke pipe 6 can be connected to an exhaust system, which automatically draws the flue gas into the main smoke pipe 6 through suction. Thus, when flue gas overflows from the feed inlet, slag outlet, and copper outlet of the tilting furnace, it can be exhausted through the first smoke hood 8, the second smoke hood 12, and the quenching smoke hood 1, respectively. When only the feed inlet is emitting flue gas, the second smoke hood 12 can be sealed internally using the pneumatic flap valve 4, and the quenching smoke hood 1 can be sealed using the pneumatic regulating valve 13, leaving only the first smoke hood 8 open. This prevents flue gas from overflowing from other locations during exhaust. Similarly, when only the slag outlet is emitting flue gas, the first smoke hood 8 and the quenching smoke hood 1 are closed; when only the copper outlet is emitting flue gas, the first smoke hood and the second smoke hood 12 are closed.

[0020] Optionally, in some embodiments, the main flue 6 is a long, rectangular pipe. A directional pipe can increase the amount of flue gas discharged, preventing flue gas overflow due to insufficient capacity.

[0021] Optionally, in some embodiments, the first smoke hood 8 has an opening on its outer side near the bottom, and a cover plate 9 is movably mounted on this opening; the first smoke hood 8 is also equipped with a driver 10 that moves the cover plate 9 to open and close the opening. It is understood that the cover plate 9 can be vertically slidably mounted using a slide rail, slide groove, or similar structure, and the driver 10 can be a pulley assembly used in conjunction with a motor for hoisting. Alternatively, the cover plate 9 can be rotated using a pivot, and the driver 10 can use a cylinder to automatically rotate the cover plate 9. Thus, the driver 10 can open and close the outer openings of the first smoke hood 8 and the second smoke hood 12 using the cover plate 9.

[0022] Optionally, in some embodiments, the main smoke pipe 6 is connected to and horizontally and vertically installed with a secondary smoke pipe 3, and a quenching smoke pipe 2 is connected to and horizontally and vertically installed on the secondary smoke pipe 3. The quenching hood 1 is installed on the quenching smoke pipe 2. It is understood that since the copper outlet of the tilting furnace is located to the side of the feed inlet and slag outlet, the function of the secondary smoke pipe 3 and the quenching smoke pipe 2 is to cooperate with the quenching hood 1 so that the installation position of the quenching hood 1 matches the position of the copper outlet. Furthermore, the quenching hood 1 has an open annular smoke inlet 11, with an internal cavity communicating with the smoke inlet 11. The top is installed on the quenching smoke pipe 2, and the quenching smoke pipe 2 communicates with the cavity. Here, the quenching ring is annular, and the semi-annular smoke inlet 11 can surround the quenching ring, allowing for better smoke extraction.

[0023] Optionally, in some embodiments, the first fume hood 8 and the second fume hood 12 are shaped such that one end is connected to the main flue 6 and the other end is bent downwards. It is understood that the main flue hood 6 is installed at the top of the tilting furnace, and the feed inlet and slag outlet are usually located on the lower side of the tilting furnace; therefore, the first fume hood 8 and the second fume hood 12 are bent.

[0024] Optionally, in some embodiments, the main smoke pipe 6 is connected to a smoke extraction pipe 5. The smoke extraction pipe 5 can be connected to an exhaust fan, which uses suction to remove the smoke from the main smoke pipe 6.

[0025] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A fume hood for the top of a metallurgical furnace, characterized in that, include: Frame (7); The main flue (6) is installed on the frame (7) to transmit flue gas; The first smoke hood (8) is installed on the main smoke pipe (6) and there is at least one. It is a hollow structure with both ends connected. One end of the first smoke hood (8) is connected to the main smoke pipe (6), and the other end is connected to the feed port of the metallurgical furnace for smoke exhaust. The second smoke hood (12) is a hollow structure with two ends connected. One end of the second smoke hood (12) is connected to the main smoke pipe (6), and the other end is connected to the slag discharge port of the metallurgical furnace for smoke discharge. The quenching hood (1) is connected to the main smoke pipe (6) at one end and installed on the quenching ring on the metallurgical furnace at the other end for smoke exhaust; A pneumatic flap valve (4) is installed on the first smoke hood (8) and the second smoke hood to open and close the interior of the first smoke hood (8) and the second smoke hood (12); A pneumatic regulating valve (13) is installed on the quench hood (1) to open and close the interior of the quench hood (1).

2. The fume hood for a metallurgical furnace as described in claim 1, characterized in that: The main flue (6) is a long, rectangular pipe.

3. The fume hood for a metallurgical furnace as described in claim 1, characterized in that: The first smoke hood (8) has an opening on the outer side near the bottom, and a cover plate (9) is movably installed on the opening; the first smoke hood (8) is also equipped with a driver (10) that drives the cover plate (9) to move and thus open and close the opening.

4. The fume hood for a metallurgical furnace as described in claim 1, characterized in that: The main smoke pipe (6) is connected to and has a secondary smoke pipe (3) installed horizontally and vertically. The secondary smoke pipe (3) is connected to and has a quenching smoke pipe (2) installed horizontally and vertically. The quenching smoke hood (1) is installed on the quenching smoke pipe (2).

5. A fume hood for the top of a metallurgical furnace according to claim 1 or 4, characterized in that: The cooling smoke hood (1) has an open annular smoking port (11) with an interior cavity that communicates with the smoking port (11). The top is mounted on the cooling smoke tube (2), and the cooling smoke tube (2) communicates with the cavity.

6. The fume hood for a metallurgical furnace as described in claim 1, characterized in that: The first smoke hood (8) and the second smoke hood (12) are shaped such that one end is connected to the main smoke pipe (6) and the other end is bent downward.

7. The fume hood for a metallurgical furnace as described in claim 1, characterized in that: The main smoke pipe (6) is connected to a smoke extraction pipe (5).

Images