A water-cooled smoke hood

Abstract

The present invention discloses a novel water-cooled smoke hood, which comprises an adjustable water-cooled smoke hood, at least one middle-connected water-cooled smoke hood and a tail-guided water-cooled smoke hood; the adjustable water-cooled smoke hood, the middle-connected water-cooled smoke hood and the tail-guided water-cooled smoke hood are sequentially and hermetically connected. The present invention sets the traditional water-cooled smoke hood into three structures. The connection part with the electric furnace is set as an adjustable water-cooled smoke hood, which can change the gap between the adjustable water-cooled smoke hood and the electric furnace mouth. The middle-connected water-cooled smoke hood plays a connecting role to connect the adjustable water-cooled smoke hood and the tail-guided water-cooled smoke hood to realize the transmission of hot air. The tail-guided water-cooled smoke hood is also of an inclined structure, and the tail of the tail-guided water-cooled smoke hood is lower than the heat preservation layer, which can guide the hot air to avoid directly flushing the heat preservation layer and make it directly flush the scrap steel, improve the preheating efficiency, and at the same time can also extend the service life of the heat-preserving smoke hood.

Description

Technical Field

[0001] The present invention belongs to the technical field of steelmaking, and particularly relates to a water-cooled hood. Background Art

[0002] The water-cooled hood used in traditional steelmaking equipment is of a straight structure. The hot air in the electric furnace is directly sent into the heat-insulating hood from within the water-cooled hood. Due to the straight structure of the water-cooled hood, the hot air will directly scour the heat-insulating hood, resulting in the heat-insulating layer of the heat-insulating hood, that is, the refractory material layer, being easily scoured and damaged at the connection with the water-cooled hood. This greatly reduces the service life of the heat-insulating hood and requires overall replacement, leading to high input costs. Moreover, the heat-insulating effect of the heat-insulating hood after scouring is also greatly reduced, which also affects the preheating effect of steelmaking. In addition, the installation distance between the water-cooled hood and the electric furnace mouth is fixed and non-adjustable, making it impossible to ensure the on-site installation dimensions, resulting in too large a gap. And since there is a hot air passage between the vibrating conveyor device and the water-cooled flue, the pressure is negative relative to the outside. Therefore, external cold air can easily enter the water-cooled flue through the gap between the vibrating conveyor device and the water-cooled flue, which also affects the preheating effect of scrap steel. Summary of the Invention

[0003] In view of the deficiencies described in the above prior art, the present invention provides a water-cooled hood.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A water-cooled hood includes an adjustable water-cooled hood, at least one middle-connected water-cooled hood, and a tail-guided water-cooled hood; the adjustable water-cooled hood, the middle-connected water-cooled hood, and the tail-guided water-cooled hood are sequentially and hermetically connected; and the adjustable water-cooled hood is provided with a water-cooled sealing structure, and the adjustable water-cooled hood is hermetically connected to the track frame of the transport trolley. Both the middle-connected water-cooled hood and the tail-guided water-cooled hood are provided with labyrinth sealing structures, and the labyrinth sealing structures can prevent external cold air from entering the water-cooled hood through the gaps between the middle-connected water-cooled hood and the tail-guided water-cooled hood and the vibrating conveyor frame; and the end of the tail-guided water-cooled hood is lower than the heat-insulating layer of the heat-insulating hood. The inclined structure can change the wind direction within the water-cooled hood, enabling the hot air to directly scour the scrap steel for preheating without scouring the heat-insulating layer of the heat-insulating hood, improving the heat-insulating performance of the heat-insulating hood and extending the service life of the heat-insulating hood.

[0006] As a preferred embodiment of the present invention, the cross-section of the adjustable water-cooled smoke hood is trapezoidal, and the width of the end of the adjustable water-cooled smoke hood close to the electric furnace is smaller than the width of the end far from the electric furnace; and the adjustable water-cooled smoke hood includes an adjustable water-cooled sub-smoke hood, a fixed water-cooled sub-smoke hood and a mounting plate; the mounting plate is connected to the track frame of the transport trolley, and the position of the mounting plate inside the track frame is suspended, the lower part of the fixed water-cooled sub-smoke hood is connected to the mounting plate, the adjustable water-cooled smoke hood is adjustably connected to the mounting plate and the adjustable water-cooled smoke hood covers the port of the fixed water-cooled sub-smoke hood, and the adjustable water-cooled smoke hood moves along the axis of the fixed water-cooled sub-smoke hood; a water-cooled sealing structure is provided at the bottom of the mounting plate, and in order to achieve a sealed connection, a sealing flange is provided at the connection between the fixed water-cooled sub-smoke hood and the middle-connected water-cooled smoke hood.

[0007] As a preferred embodiment of the present invention, the water-cooled sealing structure includes a water-cooled sealing plate, the water-cooled sealing plate is arranged on the cantilever part of the mounting plate, and the water-cooled sealing plate is provided with a water-cooled channel, and the water-cooled channel is communicated with the water-cooled pipeline. The water-cooled sealing plate forms a seal with the track frame.

[0008] As a preferred embodiment of the present invention, the adjustable water-cooled sub-smoke hood is installed on the mounting plate through an adjusting mechanism, and the adjusting mechanism includes an adjusting support plate, an adjusting plate and an adjusting bolt, the adjusting support plate is installed on the mounting plate, and an adjusting waist hole is provided on the adjusting support plate, the adjusting plate is connected to the adjusting waist hole through the adjusting bolt, and the adjusting plate is connected to the outer wall of the adjustable water-cooled sub-smoke hood.

[0009] As a preferred embodiment of the present invention, the cross-section of the middle-connected water-cooled smoke hood is rectangular, and the middle-connected water-cooled smoke hood includes a connection housing and a middle mounting support plate, the lower part of the connection housing is connected to the middle mounting support plate, the middle mounting support plate is placed on the bracket and the position of the middle mounting support plate close to the vibrating conveyor frame is a suspended part, and a labyrinth seal structure is provided at the suspended part. The labyrinth seal structure includes a spoiler seal plate I and a spoiler seal plate II, the spoiler seal plates are spaced and installed at the suspended part of the middle mounting support plate, the spoiler seal plate II is spaced and installed on the outer wall of the vibrating conveyor frame, and the spoiler seal plate I and the spoiler seal plate II are cross-arranged. And the spoiler seal plate II extends into the gap between adjacent spoiler seal plates I, and there is a gap between the spoiler seal plate II and the middle mounting support plate, and the gap forms a vibration interval. And in order to achieve a sealed connection, sealing flanges are provided at the ends of the connection housing.

[0010] As a preferred embodiment of the present invention, the cross-section of the tail-guided water-cooled smoke hood is trapezoidal, and the width of the end of the tail-guided water-cooled smoke hood near the middle-connected water-cooled smoke hood is greater than the width of the end of the tail-guided water-cooled smoke hood near the heat-insulating smoke hood; the tail-guided water-cooled smoke hood includes a guiding hood shell and a guiding installation support plate; the tail of the guiding hood shell is lower than the heat-insulating layer of the heat-insulating smoke hood; the lower part of the guiding hood shell is connected to the guiding installation support plate, the guiding installation support plate is placed on the bracket and the position of the guiding installation support plate close to the vibrating conveyor is a suspended part, and a labyrinth seal structure is provided at the suspended part. And in order to achieve a sealed connection, sealing flanges are installed at both the head and the tail ends of the guiding hood shell.

[0011] The labyrinth seal structure includes a spoiler seal plate I and a spoiler seal plate II. The spoiler seal plate I is installed at intervals at the suspended part of the guiding installation support plate, the spoiler seal plate II is installed at intervals on the outer wall of the vibrating conveyor, and the spoiler seal plate I and the spoiler seal plate II are arranged crosswise. And the spoiler seal plate II extends into the gap between adjacent spoiler seal plates I, and there is a gap between the spoiler seal plate II and the guiding installation support plate, and the gap forms a vibration zone.

[0012] The present invention sets the traditional water-cooled smoke hood into three structures. The water-cooled smoke hood at the connection with the electric furnace is set as an adjustable water-cooled smoke hood, which can change the gap between the adjustable water-cooled smoke hood and the electric furnace mouth. When the gap between the water-cooled smoke hood and the electric furnace mouth becomes smaller, the amount of external cold air entering becomes less, and the preheating temperature is increased; the middle-connected water-cooled smoke hood plays a connecting role, connecting the adjustable water-cooled smoke hood and the tail-guided water-cooled smoke hood to realize the transmission of hot air. The tail-guided water-cooled smoke hood is also an inclined structure, and the tail of the tail-guided water-cooled smoke hood is lower than the heat-insulating layer, which can guide the hot air and prevent it from directly flushing the heat-insulating layer, making it directly flush the scrap steel, improving the preheating efficiency, and at the same time extending the service life of the heat-insulating smoke hood. Moreover, each section of the water-cooled smoke hood is provided with its own sealing structure at the lower part. The adjustable water-cooled smoke hood is provided with a water-cooled sealing structure to realize the seal with the track frame of the transport trolley. The middle-connected water-cooled smoke hood and the tail-guided water-cooled smoke hood are provided with a labyrinth seal structure to realize the seal with the vibrating conveyor, avoiding the entry of external cold air and affecting the preheating effect, and at the same time improving the preheating temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0014] Figure 1 It is a schematic structural diagram of the present invention.

[0015] Figure 2This is the front view of the adjustable water-cooled hood of the present invention.

[0016] Figure 3 This is the left view of the adjustable water-cooled hood of the present invention.

[0017] Figure 4 This is the assembly schematic diagram of the adjustable water-cooled hood of the present invention and the electric furnace.

[0018] Figure 5 This is the labyrinth seal structure diagram of the intermediate connecting water-cooled hood of the present invention.

[0019] Figure 6 This is the front view of the intermediate connecting water-cooled hood of the present invention.

[0020] Figure 7 This is the front view of the assembly of the tail guiding water-cooled hood and the heat preservation hood of the present invention.

[0021] Figure 8 This is the left view of the assembly of the tail guiding water-cooled hood and the heat preservation hood of the present invention. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Embodiment:

[0024] A water-cooled hood, as Figure 1 shown, includes an adjustable water-cooled hood 1, an intermediate connecting water-cooled hood 2, and a tail guiding water-cooled hood 3; the adjustable water-cooled hood 1, the intermediate connecting water-cooled hood 2, and the tail guiding water-cooled hood 3 are sequentially and hermetically connected; and the adjustable water-cooled hood 1 is provided with a water-cooled seal structure, and the adjustable water-cooled hood is hermetically connected to the track frame of the transport trolley. The intermediate connecting water-cooled hood 2 and the tail guiding water-cooled hood 3 are both provided with labyrinth seal structures, and the labyrinth seal structures can prevent external cold air from entering the water-cooled hood through the gaps between the intermediate connecting water-cooled hood and the tail guiding water-cooled hood and the vibrating conveyor frame; and the end of the tail guiding water-cooled hood 3 is lower than the heat preservation layer of the heat preservation hood, and the inclined structure can change the wind direction in the water-cooled hood, so that the hot air directly flushes the scrap steel for preheating without flushing the heat preservation layer of the heat preservation hood, improving the heat preservation performance of the heat preservation hood and extending the service life of the heat preservation hood.

[0025] Specifically, as Figures 2 - 4As shown in the figure, the cross-section of the adjustable water-cooled smoke hood 1 is trapezoidal, and the width of the end of the adjustable water-cooled smoke hood 1 close to the electric furnace is smaller than the width of the end far from the electric furnace; and the adjustable water-cooled smoke hood 1 includes an adjustable water-cooled sub-smoke hood 11, a fixed water-cooled sub-smoke hood 12 and a mounting plate 13; the mounting plate 13 is connected to the track frame of the transport trolley, and the position of the mounting plate inside the track frame is suspended. The lower part of the fixed water-cooled sub-smoke hood 12 is connected to the mounting plate 13, and the adjustable water-cooled smoke hood 11 is installed on the mounting plate 13 through an adjusting mechanism. The adjusting mechanism includes an adjusting support plate 16, an adjusting plate 17 and an adjusting bolt 18. The adjusting support plate 16 is installed on the mounting plate 13, and adjusting waist holes are provided on the adjusting support plate 16. The adjusting plate 17 is connected to the adjusting waist holes through the adjusting bolt 18, and the adjusting plate 17 is connected to the outer wall of the adjustable water-cooled sub-smoke hood 11.

[0026] And the adjustable water-cooled smoke hood 11 covers the port of the fixed water-cooled sub-smoke hood 12, and the adjustable water-cooled smoke hood 11 moves along the axis of the fixed water-cooled sub-smoke hood; a water-cooled sealing structure is provided at the bottom of the mounting plate 13. The water-cooled sealing structure includes a water-cooled sealing plate 14. The water-cooled sealing plate 14 is arranged on the cantilever part of the mounting plate 13, and the water-cooled sealing plate 14 is provided with a water-cooled channel 15, and the water-cooled channel 15 is communicated with the water-cooled pipeline. The water-cooled sealing plate forms a seal with the track frame.

[0027] In order to achieve a sealed connection, a sealing flange is provided at the connection between the fixed water-cooled sub-smoke hood 12 and the middle connecting water-cooled smoke hood.

[0028] As Figure 1 and 5 shown in Fig. -6, the cross-section of the middle connecting water-cooled smoke hood 2 is rectangular, and the middle connecting water-cooled smoke hood 2 includes a connecting housing 21 and a middle mounting support plate 22. The lower part of the connecting housing 21 is connected to the middle mounting support plate 22. The middle mounting support plate 22 is placed on the bracket and the position of the middle mounting support plate 22 close to the vibrating conveyor frame is a suspended part. A labyrinth sealing structure is provided at the suspended part. The labyrinth sealing structure includes a spoiler sealing plate I4 and a spoiler sealing plate II5. The spoiler sealing plate 4 is installed at intervals on the suspended part of the middle mounting support plate 22, and the spoiler sealing plate II5 is installed at intervals on the outer wall of the vibrating conveyor frame. The spoiler sealing plate I4 and the spoiler sealing plate II5 are arranged crosswise. And the spoiler sealing plate II5 extends into the gap between adjacent spoiler sealing plates I4, and there is a gap between the spoiler sealing plate II5 and the middle mounting support plate, and the gap forms a vibration interval. And in order to achieve a sealed connection, sealing flanges are provided at both ends of the connecting housing 21.

[0029] As Figure 1 and 7As shown in Figure -8, the cross-section of the tail guiding water-cooled hood 3 is trapezoidal, and the width of the end of the tail guiding water-cooled hood 3 near the middle connecting water-cooled hood 2 is greater than the width of the end of the tail guiding water-cooled hood 3 near the heat-insulating hood; the tail guiding water-cooled hood 3 includes a guiding hood shell 31 and a guiding installation support plate 32; in order to achieve sealed connection, sealing flanges are installed at both the head and the tail of the guiding hood shell 31. The tail of the guiding hood shell 31 is lower than the heat-insulating layer of the heat-insulating hood; the lower part of the guiding hood shell 31 is connected to the guiding installation support plate 32. The guiding installation support plate 32 is placed on the bracket and the position of the guiding installation support plate 32 close to the vibrating conveyor is a suspended part, and a labyrinth seal structure is provided at the suspended part. The labyrinth seal structure includes a flow-disturbing seal plate I 4 and a flow-disturbing seal plate II 5. The flow-disturbing seal plate I 4 is installed at intervals at the suspended part of the guiding installation support plate 32, and the flow-disturbing seal plate II 5 is installed at intervals on the outer wall of the vibrating conveyor. The flow-disturbing seal plate I 4 and the flow-disturbing seal plate II 5 are arranged crosswise. And the flow-disturbing seal plate II 5 extends into the gap between adjacent flow-disturbing seal plates I 4, and there is a gap between the flow-disturbing seal plate II 5 and the guiding installation support plate 32, and the gap forms a vibrating interval.

[0030] When it is necessary to adjust the distance between the water-cooled hood and the electric furnace mouth, loosen the adjusting bolt, pull the adjusting plate to change the position of the adjusting bolt in the adjusting waist hole of the adjusting support plate, so as to achieve the adjustment of the distance. After adjustment, tighten the adjusting bolt to achieve locking.

[0031] The hot air in the electric furnace enters from the adjustable water-cooled hood, is transmitted through the intermediate connecting water-cooled hood and enters the tail guiding water-cooled hood. Due to the inclined structure of the tail guiding water-cooled hood itself and the structure that the tail of the tail guiding water-cooled hood is lower than the heat-insulating layer, the wind direction is changed, so that the hot air directly flushes the scrap steel and does not flush the heat-insulating layer of the heat-insulating hood. On the one hand, the preheating efficiency and preheating temperature of the scrap steel are improved, and on the other hand, the service life of the heat-insulating hood is prolonged, and the operation cost is greatly reduced.

[0032] Moreover, each section of the water-cooled hood is provided with a sealing structure. The water-cooled sealing structure provided in the adjustable water-cooled hood realizes the seal between the adjustable water-cooled hood and the track frame of the transport trolley, blocking the entry of external cold air. The intermediate connecting water-cooled hood and the tail guiding water-cooled hood are sealed with the vibrating conveyor through the labyrinth seal structure, which can effectively prevent external cold air from entering the water-cooled hood and improve the preheating temperature.

[0033] In the description of this specification, the descriptions with reference to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0034] As mentioned above, the above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent replacements or changes, should be covered by the protection scope of the present invention.

Claims

1. A water-cooled smoke hood, characterized in that: It includes an adjustable water-cooled smoke hood (1), at least one middle connecting water-cooled smoke hood (2) and a tail guiding water-cooled smoke hood (3); the adjustable water-cooled smoke hood (1), the middle connecting water-cooled smoke hood (2) and the tail guiding water-cooled smoke hood (3) are hermetically connected in sequence; the adjustable water-cooled smoke hood (1) is provided with a water-cooled sealing structure, and both the middle connecting water-cooled smoke hood (2) and the tail guiding water-cooled smoke hood (3) are provided with labyrinth sealing structures, and the end of the tail guiding water-cooled smoke hood (3) is lower than the heat-insulating layer of the heat-insulating smoke hood; the adjustable water-cooled smoke hood (1) includes an adjustable water-cooled sub-smoke hood (11), a fixed water-cooled sub-smoke hood (12) and a mounting plate (13); the lower part of the fixed water-cooled sub-smoke hood (12) is connected to the mounting plate (13), the adjustable water-cooled sub-smoke hood (11) is adjustably connected to the mounting plate (13) and the adjustable water-cooled sub-smoke hood (11) covers the port of the fixed water-cooled sub-smoke hood (12), and the bottom of the mounting plate (13) is provided with a water-cooled sealing structure; the water-cooled sealing structure includes a water-cooled sealing plate (14), the water-cooled sealing plate (14) is arranged at the bottom of the mounting plate (13), and the water-cooled sealing plate (14) is provided with a water-cooled channel (15); the adjustable water-cooled sub-smoke hood (11) is installed on the mounting plate (13) through an adjusting mechanism, and the adjusting mechanism includes an adjusting support plate (16), an adjusting plate (17) and an adjusting bolt (18), the adjusting support plate (16) is installed on the mounting plate (13), and an adjusting waist hole is provided on the adjusting support plate (16), the adjusting plate (17) is connected to the adjusting waist hole through the adjusting bolt (18), and the adjusting plate (17) is connected to the outer wall of the adjustable water-cooled sub-smoke hood (11).

2. The water-cooled smoke hood according to claim 1, characterized in that: The cross-section of the adjustable water-cooled smoke hood (1) is trapezoidal, and the width of the end of the adjustable water-cooled smoke hood (1) close to the electric furnace is smaller than the width of the end far from the electric furnace.

3. The water-cooled smoke hood according to claim 1 or 2, characterized in that: The cross-section of the middle connecting water-cooled smoke hood (2) is rectangular, and the middle connecting water-cooled smoke hood (2) includes a connecting housing (21) and a middle mounting support plate (22), the lower part of the connecting housing (21) is connected to the middle mounting support plate (22), the middle mounting support plate (22) is placed on the bracket and the position of the middle mounting support plate (22) close to the vibrating conveyor is a suspended part, and a labyrinth sealing structure is provided at the suspended part.

4. The water-cooled smoke hood according to claim 3, characterized in that: The cross-section of the tail guiding water-cooled smoke hood (3) is trapezoidal, and the width of the end of the tail guiding water-cooled smoke hood (3) close to the middle connecting water-cooled smoke hood (2) is larger than the width of the end of the tail guiding water-cooled smoke hood (3) close to the heat-insulating smoke hood.

5. The water-cooled smoke hood according to claim 4, characterized in that: The tail guiding water-cooled smoke hood (3) includes a guiding housing (31) and a guiding mounting support plate (32); the tail of the guiding housing (31) is lower than the heat-insulating layer of the heat-insulating smoke hood; the lower part of the guiding housing (31) is connected to the guiding mounting support plate (32), the guiding mounting support plate (32) is placed on the bracket and the position of the guiding mounting support plate (32) close to the vibrating conveyor is a suspended part, and a labyrinth sealing structure is provided at the suspended part.

6. The water-cooled smoke hood according to claim 5, characterized in that: The maze seal structure includes a spoiler seal plate I (4) and a spoiler seal plate II (5). The spoiler seal plate I (4) is installed at intervals on the overhanging part of the middle mounting support plate (22) or the overhanging part of the guiding mounting support plate (32), and the spoiler seal plate II (5) is installed at intervals on the outer wall of the vibrating conveyor frame. The spoiler seal plate I (4) and the spoiler seal plate II (5) are arranged crosswise.

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