Converter fume hood and converter system having the same

Abstract

The present application discloses a converter fume hood and a converter system with the same, the converter fume hood comprises a first fume hood, a second fume hood and a moving fume hood, the first fume hood is arranged above a converter, the first fume hood defines a blowing and smelting fume discharge area, the first fume hood comprises a converter charging port, and the converter charging port is communicated with the blowing and smelting fume discharge area; the second fume hood comprises a discharging fume discharge hood body and a diffused fume hood body, the discharging fume discharge hood body is connected with the first fume hood, so that the discharging fume discharge hood body is arranged above the converter charging port, and the discharging fume discharge hood body is opposite to the first fume hood in a first direction, the discharging fume discharge hood body and the first fume hood define a charging fume discharge area, the diffused fume hood body is connected with the discharging fume discharge hood body, and at least part of the diffused fume hood body is arranged above the position where the first fume hood and the discharging fume discharge hood body are connected; the upper end of the moving fume hood is matched with the upper end of the diffused fume hood body. The converter fume hood of the present application makes the fume not easy to diffuse to the outside, and has good fume sealing performance.

Description

Technical Field

[0001] This invention relates to the field of non-ferrous metal metallurgy technology, specifically to a converter hood and a converter system having the same. Background Technology

[0002] In the non-ferrous metals smelting industry, converters are widely used in the blowing process of metals such as copper and nickel. During operations such as blowing, charging, slag removal, and copper tapping, converters emit large amounts of process fumes. Related technologies use sealed fume hoods above the converter to collect these fumes; however, these hoods often have poor sealing performance, allowing some fumes to escape into the workshop environment and cause pollution. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, this invention proposes a converter fume hood that prevents flue gas from escaping and has good flue gas sealing performance.

[0005] This invention also provides a converter system having the converter hood described in the above embodiments.

[0006] The converter fume hood of this invention includes: a first fume hood, which covers the converter and defines a blowing exhaust zone; the first fume hood includes a converter charging port, which communicates with the blowing exhaust zone; and a second fume hood, which includes a discharge exhaust hood and an escape exhaust hood, the discharge exhaust hood being connected to the first fume hood such that it covers the converter charging port, and the discharge exhaust hood and the first fume hood are opposite each other in a first direction, the discharge exhaust hood and the first fume hood defining a charging exhaust zone. The smoke zone has the first direction perpendicular to the vertical direction. The escaping smoke hood is connected to the discharge smoke hood, and at least a portion of the escaping smoke hood covers the area above the connection between the first smoke hood and the discharge smoke hood, so that the escaping smoke hood blocks the smoke escaping from the feeding smoke zone. The movable smoke hood has its upper end matching the upper end of the escaping smoke hood, and the movable smoke hood is movable between a closed position and an open position. When in the closed position, the movable smoke hood and the escaping smoke hood cover the feeding smoke zone.

[0007] In this embodiment of the invention, the first fume hood of the converter corresponds to the furnace opening of the converter in the blowing state, so that the first fume hood can prevent the flue gas discharged from the furnace opening from escaping. When the converter is in the charging or discharging state, the converter rotates to the rear end so that its furnace opening corresponds to the charging exhaust zone, and the escaping flue gas hood is connected to the discharging exhaust hood. The escaping flue gas hood is positioned above the joint between the first fume hood and the discharging exhaust hood, thereby preventing the flue gas from escaping outward from the gap between the joint between the first fume hood and the discharging exhaust hood. Furthermore, the movable fume hood and the escaping flue gas hood, in a closed position, cover the charging exhaust zone, so that the flue gas in the charging exhaust zone can be sealed by the movable fume hood and the escaping flue gas hood, preventing the flue gas from escaping.

[0008] Therefore, the converter hood in this embodiment of the invention makes it difficult for flue gas to escape outward, and has good flue gas sealing performance.

[0009] In some embodiments, a portion of the escaping hood protrudes toward the discharge hood in a direction close to the first hood, such that the mating point between the first hood and the discharge hood is located between the discharge hood and the escaping hood.

[0010] In some embodiments, the flue gas hood includes a first sidewall, a second sidewall, a third sidewall, and a top wall. The first sidewall and the second sidewall are disposed opposite each other in a second direction. Both the first sidewall and the second sidewall are connected to the discharge exhaust hood. The third sidewall is opposite to the discharge exhaust hood in the first direction. One end of the third sidewall is connected to the first sidewall, and the other end of the third sidewall is connected to the second sidewall. The upper ends of the first sidewall, the second sidewall, and the third sidewall are all connected to the top wall. The second direction is perpendicular to the vertical direction and the first direction. A first flue gas zone is defined between the first sidewall, the second sidewall, the third sidewall, the top wall, and the discharge exhaust hood.

[0011] In some embodiments, the movable fume hood includes a first movable hood body, a second movable hood body, and a driving device. The first movable hood body and the second movable hood body are both opposite to the second fume hood in the first direction. The first movable hood body and the second movable hood body are disposed opposite to each other in the second direction. The first movable hood body is movably connected to the flue gas hood in the second direction, and the second movable hood body is movably connected to the flue gas hood in the second direction. The first movable hood body and the second movable hood body, when in the closed position, define a second flue gas zone with the second fume hood. The driving device cooperates with the first movable hood body and the second movable hood body so that the driving device drives the first movable hood body and the second movable hood body to move along the length direction of the converter.

[0012] In some embodiments, the top wall has a first protrusion that protrudes from the second smoke hood in a first direction toward a direction away from the first smoke hood, and the first protrusion extends in a second direction. The first movable hood includes a second protrusion that protrudes from the first movable hood in the first direction toward a direction closer to the second smoke hood, and the second protrusion extends in the second direction. The upper surface of the second protrusion engages with the lower surface of the first protrusion. The second movable hood includes a third protrusion that protrudes from the second movable hood in the first direction toward a direction closer to the second smoke hood, and the third protrusion extends in the second direction. The upper surface of the third protrusion engages with the lower surface of the first protrusion.

[0013] In some embodiments, the first protrusion is provided with a guide rail, the extension direction of the guide rail is consistent with the second direction, the second protrusion is provided with a first guide member, the first guide member is slidably engaged with the guide rail along the second direction, and the third protrusion is provided with a second guide member, the second guide member is slidably engaged with the guide rail along the second direction.

[0014] In some embodiments, the lower surface of the first protrusion is provided with a groove, and the guide rail is disposed on the bottom wall surface of the groove.

[0015] In some embodiments, the converter hood of the present invention further includes a flue gas outlet, which is disposed on at least one of the second hood and the movable hood.

[0016] In some embodiments, the converter hood of the present invention further includes: a flue gas guiding pipe, the flue gas guiding pipe including a partition plate, a first flue gas inlet, a second flue gas inlet, a first flue gas outlet and a second flue gas outlet, the flue gas guiding pipe having a first guiding branch and a second guiding branch separated by the partition plate, the first flue gas inlet and the first flue gas outlet being connected to the first guiding branch, the first flue gas inlet being connected to the first escaping flue gas zone, the second flue gas inlet and the second flue gas outlet being connected to the second guiding branch, the second flue gas inlet being connected to the second escaping flue gas zone, and the first flue gas outlet and the second flue gas outlet being connected to the outside.

[0017] The converter system of this invention includes: a converter; a converter fume hood, wherein the converter fume hood is the converter fume hood described in any of the above embodiments, and the converter fume hood is installed on the converter. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the converter fume hood according to an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the converter fume hood according to an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the structure of the blowing and exhaust zone in an embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the feeding and exhaust zone in an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the structure of the first flue gas zone in an embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the structure of the second flue gas zone in an embodiment of the present invention.

[0024] Figure 7 This is a schematic diagram of the flue gas guiding pipe according to an embodiment of the present invention.

[0025] Figure 8 This is a schematic diagram of the flue gas guiding pipe according to an embodiment of the present invention.

[0026] Figure 9 yes Figure 1 A magnified view of a portion of point A in the middle.

[0027] Figure label:

[0028] Converter fume hood 100;

[0029] First fume hood 1; Converter charging port 11; First flue gas inlet 12; Blowing exhaust zone 13;

[0030] Material discharge hood 21; flue gas hood 22; first side wall 221; third side wall 222; top wall 223; first protrusion 2231; guide rail 2232; groove 2233; bottom wall surface 22331; material feeding hood 23; first flue gas hood 24;

[0031] Movable fume hood 3; First movable hood body 31; Second protrusion 311; First guide member 312; Second movable hood body 32; Drive device 33; Second escaping smoke zone 34;

[0032] Flue gas guiding duct 4; First flue gas inlet 41; Second flue gas inlet 42; First flue gas outlet 43; Second flue gas outlet 44; Partition plate 45;

[0033] Steamed buns 5; Converter oven 200. Detailed Implementation

[0034] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0035] The converter fume hood 100 of the present invention is described below with reference to the accompanying drawings.

[0036] like Figures 1-8 As shown, the converter fume hood 100 of this embodiment of the invention includes a first fume hood 1, a second fume hood, and a movable fume hood 3.

[0037] The first fume hood 1 includes a converter charging port 11 and a first smoke inlet 12. The first fume hood 1 encloses a blowing and exhaust zone 13. The first smoke inlet 12 is connected to the blowing and exhaust zone 13. The first fume hood 1 is placed above the converter and the first smoke inlet 12 is connected to the converter opening.

[0038] The second fume hood includes a discharge fume hood 21 and an escape fume hood 22. The discharge fume hood 21 and the first fume hood 1 form a feeding and exhaust area 23. The discharge fume hood 21 and the first fume hood 1 are in a first direction (e.g., Figure 1 The two hoods are positioned opposite each other in the front-to-back direction. The discharge hood 21 is fitted with the first hood 1 and the second hood covers the converter feed port 11, with the first direction perpendicular to the vertical direction. The escaping hood 22 is connected to the discharge hood 21 and is positioned above the connection point between the first hood 1 and the discharge hood 21.

[0039] The upper end of the movable fume hood 3 and the upper end of the escaping fume hood 22 are matched, and the movable fume hood 3 can move between the closed position and the open position. The movable fume hood 3 and the escaping fume hood 22 in the closed position cover the feeding and exhaust area 23.

[0040] The related technology includes a first fixed fume hood, a second fixed fume hood, and a movable fume hood. The first fixed fume hood is positioned above the top of the converter. The first fixed fume hood has a charging port. The second fixed fume hood, positioned above the top of the converter, forms an exhaust zone, with its rear ends covering the charging port. The front end of the movable fume hood matches the rear end of the second fixed fume hood. The movable fume hood is movable between a closed position covering the exhaust zone and an open position. In the closed position, the movable fume hood covers the converter's exhaust zone. When the converter is in the blowing state, the blowing zone enclosed by the first fixed fume hood corresponds to the furnace opening of the converter in the blowing state. When the converter is in the charging or discharging state, the converter rotates rearward, aligning its furnace opening with the exhaust zone. Due to gaps at the joints of the first and second fixed fume hoods, and also at the joints of the movable fume hood and the second fixed fume hood, some flue gas escapes outward, causing pollution in the workshop environment.

[0041] Compared with related technologies, in this embodiment of the invention, when the converter is in the blowing state, the first fume hood 1 of the converter fume hood 100 corresponds to the furnace opening of the converter in the blowing state, so that the first fume hood 1 can prevent the flue gas discharged from the furnace opening from escaping. When the converter is in the charging or discharging state, the converter rotates to the rear end so that its furnace opening corresponds to the charging exhaust zone 23, and the escaping flue gas hood 22 is connected to the discharging exhaust hood 21. The escaping flue gas hood 22 covers the area where the first fume hood 1 and the discharging exhaust hood 21 meet, thereby preventing the flue gas from escaping outward from the gap between the first fume hood 1 and the discharging exhaust hood 21. Furthermore, the movable fume hood 3 and the escaping flue gas hood 22, which are in a closed position, cover the charging exhaust zone 23, so that the flue gas in the charging exhaust zone 23 can be sealed by the movable fume hood 3 and the escaping flue gas hood 22, preventing the flue gas from escaping.

[0042] Therefore, the converter hood 100 of this embodiment of the invention makes it difficult for flue gas to escape outward, and has good flue gas sealing performance.

[0043] To make the technical solution of this application easier to understand, the following description uses the example of the first direction being consistent with the front-back direction and the second direction being consistent with the left-right direction, where the up-down direction is perpendicular to the left-right direction, and the front-back direction and the up-down direction are as follows: Figure 1 As shown.

[0044] The converter fume hood 100 of this invention includes a first fume hood 1, a second fume hood, a flue gas guiding pipe 4, and a movable fume hood 3.

[0045] In some embodiments, such as Figure 1 As shown, a portion of the flue gas hood 22 protrudes towards the discharge hood 21 in the direction close to the first hood 1, that is, protrudes to the right, so that the mating point between the first hood 1 and the discharge hood 21 is located between the discharge hood 21 and the flue gas hood 22.

[0046] A portion of the flue gas hood 22 protrudes towards the discharge hood 21 in the direction close to the first hood 1, so that the flue gas hood 22 can fully cover the gap at the joint between the first hood 1 and the discharge hood 21, thereby further improving the sealing performance of the converter hood 100 for flue gas.

[0047] Specifically, the flue gas hood 22 includes a first sidewall 221, a second sidewall, a third sidewall 222, and a top wall 223. The first sidewall 221 and the second sidewall are arranged opposite each other in the left-right direction and are both connected to the discharge hood 21. The third sidewall 222 and the discharge hood 21 are opposite each other in the front-back direction. One end of the third sidewall 222 is connected to the first sidewall 221, and the other end of the third sidewall 222 is connected to the second sidewall. The upper ends of the first sidewall 221, the second sidewall, and the third sidewall 222 are all connected to the top wall 223. The first sidewall 221, the second sidewall, the third sidewall 222, the top wall 223, and the discharge hood 21 define a first flue gas zone 24.

[0048] The first sidewall 221, the second sidewall, the third sidewall 222, and the top wall 223 protrude toward the discharge hood 21 toward the first hood 1, that is, they protrude to the right, so that the first sidewall 221, the second sidewall, the third sidewall 222, and the top wall 223 can fully cover the gap at the joint between the first hood 1 and the discharge hood 21, thereby further improving the sealing performance of the converter hood 100 for flue gas.

[0049] In some embodiments, such as Figures 1-3 As shown, the movable fume hood 3 includes a first movable hood body 31, a second movable hood body 32, and a driving device 33. The first movable hood body 31 and the second movable hood body 32 are arranged opposite each other in the left-right direction. The first movable hood body 31 is movably connected to the fume hood 22 in the left-right direction, and the second movable hood body 32 is movably connected to the fume hood 22 in the left-right direction. That is, the closed position is when the first movable hood body 31 and the second movable hood body 32 are in contact with each other in the left-right direction and are closed; the open position is when the first movable hood body 31 and the second movable hood body 32 are separated from each other in the left-right direction. The first movable hood body 31 and the second movable hood body 32 in the closed position, together with the second fume hood, define a second fume hood zone 34.

[0050] After the converter completes the blowing of the metal and pours out the molten metal, the drive device 33 drives the first movable fume hood 31 and the second movable fume hood 32 to the open state, so that the first movable fume hood 31 and the second movable fume hood 32 move to both sides of the second fume hood, thereby clearing the space in front of the converter so that the buns 5 can be hoisted to the front of the converter. The drive device 33 cooperates with the first movable hood 31 and the second movable hood 32 so that the drive device 33 drives the first movable hood 31 and the second movable hood 32 to move along the length of the converter.

[0051] After the bun 5 is hoisted, the drive device 33 drives the first movable fume hood 31 and the second movable fume hood 32 to move, so that the first movable fume hood 31 and the second movable fume hood 32 fit together, thereby covering the bun 5 and sealing the feeding and exhaust area 23. This allows the collection of fumes emitted during the pouring of molten material, so that the fumes can be discharged outside the workshop. When the converter needs to add molten material, the drive device 33 drives the first movable fume hood and the second movable fume hood to move along the length of the converter to both sides of the fixed fume hood, so that there are no obstructions in the space in front of the converter, making it easy to hoist the feeding bun 5 and complete the feeding operation.

[0052] In this embodiment of the invention, the movable fume hood 3 of the converter fume hood 100 fits tightly with the flue gas hood 22, thereby reducing the gap between the movable fume hood 3 and the flue gas hood 22. This not only improves the airtightness of the converter fume hood 100 but also greatly reduces the escape of flue gas.

[0053] In some embodiments, such as Figure 2 As shown, the drive unit 33 includes a bracket, a counterweight assembly, a driver, a drive wheel assembly, and a driven wheel assembly. The frame is connected to the movable cover, and a counterweight is positioned away from the cover end, ensuring the overall center of gravity of the movable cover is between the drive wheel assembly and the driven wheel assembly, thus ensuring stable operation of the movable cover. The driver drives the drive wheel assembly, causing the frame and the movable cover to move in the left-right direction.

[0054] In some embodiments, such as Figure 1 As shown, the top wall 223 has a first protrusion 2231, which protrudes from the second smoke hood in the front-rear direction away from the first smoke hood 1, that is, the first protrusion 2231 protrudes rearward and extends in the left-right direction. The first movable cover 31 includes a second protrusion 311, which protrudes from the first movable cover 31 in the front-rear direction towards the second smoke hood, that is, the second protrusion 311 protrudes forward and extends in the left-right direction.

[0055] The upper surface of the second protrusion 311 and the lower surface of the first protrusion 2231 are engaged. The second movable cover 32 includes a third protrusion. The third protrusion protrudes from the second movable cover 32 toward the direction close to the second smoke hood in a first direction. The third protrusion extends in a second direction. The upper surface of the third protrusion and the lower surface of the first protrusion 2231 are engaged.

[0056] In other words, the upper surface of the second protrusion 311 and the lower surface of the first protrusion 2231 cooperate, and the upper surface of the third protrusion and the lower surface of the first protrusion 2231 cooperate, so that the connection between the movable fume hood 3 and the flue gas hood 22 is better sealed, thereby further improving the flue gas sealing performance of the converter fume hood 100 in this embodiment of the invention.

[0057] In some embodiments, such as Figure 1 As shown, a guide rail 2232 is provided on the first protrusion 2231, and the extension direction of the guide rail 2232 is consistent with the left-right direction. A first guide member 312 is provided on the second protrusion 311, and the first guide member 312 is slidably engaged with the guide rail 2232 along the second direction. A second guide member is provided on the third protrusion, and the second guide member is slidably engaged with the guide rail 2232 along the second direction. By utilizing the cooperation of the guide rail 2232, the first guide member 312, and the second guide member, the first movable cover 31 and the second movable cover 32 can move more stably between the closed position and the open position.

[0058] Furthermore, such as Figures 1-3 As shown, the lower surface of the first protrusion 2231 is provided with a groove 2233, and the guide rail 2232 is provided on the bottom wall surface 22331 of the groove 2233, thereby further improving the integrity of the first movable hood 31 and the second movable hood 32 with the flue gas hood 22, and improving the tightness of the connection between the first movable hood 31 and the second movable hood 32 with the flue gas hood 22.

[0059] In some embodiments, the converter hood 100 of the present invention further includes a flue gas outlet, which is disposed on at least one of the second hood and the movable hood 3. In other words, the second hood is provided with a flue gas outlet; or, the movable hood 3 is provided with a flue gas outlet; or, both the second hood and the movable hood 3 are provided with flue gas outlets. This facilitates the discharge of flue gas collected by the second hood or the movable hood 3.

[0060] Specifically, the converter hood 100 of this embodiment includes a flue gas guiding pipe, which includes a partition plate 45, a first flue gas inlet 41, a second flue gas inlet 42, a first flue gas outlet 43, and a second flue gas outlet 44. The flue gas guiding pipe has a first guiding branch and a second guiding branch separated by the partition plate 45. The first flue gas inlet 41 and the first flue gas outlet 43 are both connected to the first guiding branch. The first flue gas inlet 41 is connected to the first escaping flue gas zone 24. The second flue gas inlet 42 and the second flue gas outlet 44 are both connected to the second guiding branch. The second flue gas inlet 42 is connected to the second escaping flue gas zone 34. The first flue gas outlet 43 and the second flue gas outlet 44 are both connected to the outside.

[0061] The partition plate 45 divides the flue gas guiding pipe into a first guiding branch and a second guiding branch, so that the flue gas in the first flue gas zone 24 and the second flue gas zone 34 can be discharged through the first guiding branch and the second guiding branch respectively, making the first flue gas zone 24 and the second flue gas zone 34 independent of each other, thereby realizing the adjustment of the negative pressure in the first flue gas zone 24 and the second flue gas zone 34 respectively, thus adapting to the situation where the flue gas content in the first flue gas zone 24 and the second flue gas zone 34 is different.

[0062] The converter system of this invention includes a converter 200, a converter hood 100, and a flue gas treatment device (not shown in the figure). The converter hood 100 is any of the converter hoods described above. The converter hood 100 cooperates with the flue gas treatment device so that the flue gas treatment device can treat the flue gas collected by the converter hood 100.

[0063] In this embodiment of the invention, the first fume hood 1 of the converter fume hood 100 corresponds to the furnace opening of the converter in the blowing state, so that the first fume hood 1 can prevent the flue gas discharged from the furnace opening from escaping. When the converter is in the charging or discharging state, the converter rotates to the rear end so that its furnace opening corresponds to the charging exhaust zone 23. The escaping flue gas hood 22 is connected to the discharging exhaust hood 21, and the escaping flue gas hood 22 covers the area where the first fume hood 1 and the discharging exhaust hood 21 meet, thereby preventing the flue gas from escaping outward from the gap between the first fume hood 1 and the discharging exhaust hood 21. Furthermore, the movable fume hood 3 and the escaping flue gas hood 22, which are in a closed position, cover the charging exhaust zone 23, so that the flue gas in the charging exhaust zone 23 can be sealed by the movable fume hood 3 and the escaping flue gas hood 22, preventing the flue gas from escaping.

[0064] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0065] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0066] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0067] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0068] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0069] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A converter fume hood, characterized in that, include: A first fume hood is disposed above the converter and defines a blowing exhaust zone. The first fume hood includes a converter charging port, which is connected to the blowing exhaust zone. The second fume hood includes a discharge hood and an escape hood. The discharge hood is connected to the first fume hood so that it covers the converter charging port. The discharge hood and the first fume hood are opposite each other in a first direction, and the discharge hood and the first fume hood define a charging exhaust zone. The first direction is perpendicular to the vertical direction. The escaping hood is connected to the discharge hood, and at least part of the escaping hood covers the area above the connection between the first hood and the discharge hood, so that the escaping hood blocks the escaping fumes from the feeding and exhaust area. The venting smoke hood includes a first side wall, a second side wall, a third side wall, and a top wall. The first sidewall and the second sidewall are disposed opposite to each other in a second direction. Both the first sidewall and the second sidewall are connected to the discharge exhaust hood. The third sidewall is opposite to the discharge exhaust hood in the first direction. One end of the third sidewall is connected to the first sidewall, and the other end of the third sidewall is connected to the second sidewall. The upper ends of the first sidewall, the second sidewall, and the third sidewall are all connected to the top wall. The second direction is perpendicular to the vertical direction and the first direction. A first escaping flue gas zone is defined between the first sidewall, the second sidewall, the third sidewall, the top wall, and the discharge hood; A movable fume hood, the upper end of which is engaged with the upper end of the escaping fume hood, and the movable fume hood is movable between a closed position and an open position. When the movable fume hood is in the closed position, the movable fume hood and the escaping fume hood cover the feeding and exhaust area. The movable fume hood includes a first movable hood body, a second movable hood body, and a driving device. Both the first and second movable hood bodies are opposite to the second fume hood in the first direction. The first and second movable hood bodies are also opposite to each other in the second direction. The first movable hood body is movably connected to the fume hood body along the second direction, and the second movable hood body is movably connected to the fume hood body along the second direction. When in the closed position, the first and second movable hood bodies, together with the second fume hood, define a second fume hood zone. The driving device cooperates with the first movable cover and the second movable cover so that the driving device drives the first movable cover and the second movable cover to move along the length direction of the converter.

2. The converter fume hood according to claim 1, characterized in that, A portion of the escaping smoke hood protrudes towards the discharge smoke hood in the direction of the first smoke hood, so that the connection point between the first smoke hood and the discharge smoke hood is located between the discharge smoke hood and the escaping smoke hood.

3. The converter fume hood according to claim 2, characterized in that, The top wall has a first protrusion that protrudes from the second smoke hood in the first direction toward a direction away from the first smoke hood, and the first protrusion extends in the second direction. The first movable hood includes a second protrusion that protrudes from the first movable hood toward the second smoke hood in the first direction, extends in the second direction, and its upper surface mates with the lower surface of the first protrusion. The second movable cover includes a third protrusion, which protrudes from the second movable cover toward the second smoke hood in the first direction and extends in the second direction. The upper surface of the third protrusion and the lower surface of the first protrusion cooperate with each other.

4. The converter fume hood according to claim 3, characterized in that, The first protrusion is provided with a guide rail, and the extension direction of the guide rail is consistent with the second direction. The second protrusion is provided with a first guide member, which is slidably engaged with the guide rail along the second direction. The third protrusion is provided with a second guide member, which is slidably engaged with the guide rail along the second direction.

5. The converter fume hood according to claim 4, characterized in that, The lower surface of the first protrusion is provided with a groove, and the guide rail is provided on the bottom wall surface of the groove.

6. The converter fume hood according to any one of claims 2-5, characterized in that, It further includes a smoke exhaust port, which is located on at least one of the second smoke hood and the movable smoke hood.

7. The converter fume hood according to claim 6, characterized in that, Further includes: Flue gas guiding duct, The flue gas guiding duct includes a partition plate, a first flue gas inlet, a second flue gas inlet, a first flue gas outlet, and a second flue gas outlet. The flue gas guiding duct has a first guiding branch and a second guiding branch separated by the partition plate. The first flue gas inlet and the first flue gas outlet are both connected to the first guiding branch. The first flue gas inlet is connected to the first escaping flue gas zone. The second flue gas inlet and the second flue gas outlet are both connected to the second guiding branch. The second flue gas inlet is connected to the second escaping flue gas zone. The first flue gas outlet and the second flue gas outlet are both connected to the outside.

8. A converter system, characterized in that, include: Converter; A converter fume hood, wherein the converter fume hood is any one of claims 1-7, and the converter fume hood is provided on the converter.

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