Environment-friendly smoke hood for anode furnace

Abstract

The utility model relates to an anode furnace environmental protection smoke hood, including skeleton, fixed cover body, movable cover body and drive assembly, skeleton is straddled and established on anode furnace, fixed cover body establishes on skeleton, fixed cover body covers the top of the furnace mouth of anode furnace, fixed cover body is equipped with the operation opening, the furnace mouth is opposite with the part of operation opening in its extension direction, fixed cover body is equipped with the smoke pipe, movable cover body rotatably establishes on fixed cover body between closing position and opening position, in closing position, movable cover body covers on fixed cover body to close operation opening, in opening position, movable cover body and furnace mouth stagger in the extension direction of furnace mouth to expose operation opening with the furnace mouth, drive assembly is connected with movable cover body to drive movable cover body to rotate between closing position and opening position. Be used for collecting the flue gas that disperses from the furnace mouth to reduce the pollution of flue gas to the environment, solve, the existing smoke cover occupies the space of ground, the problem that sealing is not strict, equipment is easy to deform.

Description

Technical Field

[0001] This utility model relates to the field of copper smelting technology, specifically to an environmentally friendly fume hood for an anode furnace. Background Technology

[0002] In copper smelting, rotary anode furnaces are commonly used for the pyrometallurgical refining of crude copper. Rotary anode furnaces generally have a flue gas outlet and a furnace opening, with the opening primarily used for adding and cooling copper, and for slag removal. The furnace opening is equipped with a door; when the anode furnace is in the oxidation-reduction reaction stage or when copper is being tapped for anode plate casting, the door is closed. However, a certain amount of flue gas still escapes from the furnace opening and the gaps in the door. This escaping flue gas pollutes the environment and harms the health of workers. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of this utility model propose an environmentally friendly fume hood for an anode furnace, used to collect the flue gas escaping from the furnace opening during the oxidation-reduction reaction stage or when copper is tapped for anode plate casting, thereby reducing the pollution of the environment by the flue gas. At the same time, it solves the problems of existing fume hoods having a large footprint, poor sealing, and easy deformation of the equipment.

[0005] An environmentally friendly fume hood for an anode furnace according to an embodiment of the present invention includes a frame, a fixed hood body, a movable hood body, and a drive assembly. The frame spans the anode furnace, the fixed hood body is disposed on the frame, and the fixed hood body covers the furnace opening of the anode furnace. The fixed hood body has a working opening, and a portion of the furnace opening is opposite to the working opening in its extending direction. A flue pipe is provided on the fixed hood body. The movable hood body is rotatably disposed on the fixed hood body between a closed position and an open position. In the closed position, the movable hood body covers the fixed hood body to close the working opening. In the open position, the movable hood body is offset from the furnace opening in the extending direction of the furnace opening so that the working opening is exposed. The drive assembly is disposed on the frame and is connected to the movable hood body to drive the movable hood body to rotate between the closed position and the open position.

[0006] This utility model discloses an environmentally friendly fume hood for an anode furnace. The movable hood and the fixed hood are hinged together. A drive assembly moves the movable hood to close or open the working opening. When the working opening is closed, the movable and fixed hoods work together to collect the escaping flue gas, which is then discharged from the exhaust pipe to a downstream flue gas treatment system. This prevents the flue gas from being exposed to the working environment and thus avoids harm to personnel health, reducing environmental pollution. Furthermore, in this embodiment, the environmentally friendly fume hood is positioned entirely above the anode furnace, and the movement space of the movable hood is also above the furnace. This eliminates the impact of anode furnace operation on the furnace access passage and surrounding plant platform space, avoiding potential safety issues.

[0007] In some embodiments, the working opening includes a first opening and a second opening, the fixed cover has a first side and a second side, one end of the first side is connected to the second side, the first opening is provided on the first side, the first opening is opposite to the furnace opening in the extension direction of the furnace opening, the second opening is provided on the second side, a portion of the second opening is opposite to the furnace opening in the horizontal direction, and the second opening is connected to the first opening.

[0008] In some embodiments, the movable cover includes a first cover and a second cover, one end of the first cover is hinged to the fixed cover, the other end of the first cover is hinged to the second cover, the first cover is connected to the drive assembly, and in the closed position, the first cover closes the first opening, and the second cover fits against the second opening.

[0009] In some embodiments, in the closed position, the first cover fits against the first side.

[0010] In some embodiments, the other end of the first side is higher than or equal to the first end thereon.

[0011] In some embodiments, at the other end of the first side, the angle between the first side and the horizontal plane is α, where 0° < α ≤ 60°.

[0012] In some embodiments, the smoke outlet pipe is located at the other end of the first side, and the smoke outlet pipe is higher than the first side.

[0013] In some embodiments, the drive assembly includes a winch, a pulley block, and a winch rope. The winch and the pulley block are both mounted on the frame. The pulley block is higher than the fixed cover. One end of the winch rope is wound around the winch, and the other end of the winch rope is wound around the pulley block and connected to the movable cover.

[0014] In some embodiments, the hoisting device is located above and spaced apart from the smoke outlet pipe.

[0015] In some embodiments, in the open position, the height of the other end of the winch rope is lower than the height of the pulley block, and the connection point between the winch rope and the movable cover is located above the middle of the movable cover. Attached Figure Description

[0016] Figure 1 This is one of the structural schematic diagrams of the environmentally friendly fume hood for the anode furnace according to an embodiment of this utility model, wherein the movable hood is in the closed position;

[0017] Figure 2 This is the second structural schematic diagram of the environmentally friendly fume hood for the anode furnace according to an embodiment of this utility model, wherein the movable hood is located in the open position;

[0018] Figure 3 This is the third structural schematic diagram of the environmentally friendly fume hood for the anode furnace according to an embodiment of this utility model, wherein the movable hood is in the closed position;

[0019] Figure 4 yes Figure 3 A schematic diagram of the structure behind the movable cover, viewed from a different perspective;

[0020] Figure 5 yes Figure 3 A schematic diagram of the structure of the movable enclosure from a specific perspective;

[0021] Figure 6 This is a schematic diagram of the state of the movable cover in the closed position, the open position, and different positions between the closed and open positions according to an embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of the skeleton structure of an embodiment of this utility model;

[0023] Figure label:

[0024] 100. Environmentally friendly fume hood;

[0025] 1. Skeleton; 11. First step surface; 12. Second step surface; 13. Third step surface;

[0026] 2. Fixed cover body, 21. First side, 211. First opening, 22. Second side, 221. Second opening, 23. Smoke pipe, 24. Front cover body, 25. Rear cover body, 26. Upper cover body;

[0027] 3. Movable enclosure; 31. First enclosure; 32. Second enclosure;

[0028] 4. Drive components; 41. Winching equipment; 42. Pulley block; 43. Winching rope;

[0029] 200. Anode furnace. Detailed Implementation

[0030] The embodiments of the present invention are described in detail below, examples of which are shown 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.

[0031] The following is a reference to the appendix. Figures 1 to 7 This invention provides a detailed description of the environmentally friendly fume hood 100 for an anode furnace according to an embodiment of the present invention.

[0032] like Figures 1 to 7 As shown, the environmentally friendly fume hood 100 for an anode furnace in this embodiment of the present invention includes a frame 1, a fixed hood body 2, a movable hood body 3, and a drive assembly 4.

[0033] The frame 1 is installed on the anode furnace 200. Specifically, as follows: Figure 1 and Figure 7 As shown, the frame 1 includes multiple columns and crossbeams. The columns are set on the platform around the anode furnace 200. The columns on both sides of the frame 1 are located on both sides of the anode furnace 200. The crossbeams are set on the columns, and the middle part of the crossbeams is located above the anode furnace 200.

[0034] The fixed hood 2 is mounted on the frame 1 and covers the furnace opening of the anode furnace 200. The fixed hood 2 has a working opening, and a portion of the furnace opening is opposite to the working opening in its extension direction. The fixed hood 2 is equipped with a flue gas pipe 23. The flue gas pipe 23 is used to connect to the downstream flue gas treatment system.

[0035] The movable cover 3 is rotatably mounted on the fixed cover 2 between a closed position and an open position. In the closed position, the movable cover 3 covers the fixed cover 2 to close the working opening. In the open position, the movable cover 3 is offset from the furnace opening in the extension direction of the furnace opening so that the working opening is exposed. The drive assembly 4 is mounted on the frame 1 and is connected to the movable cover 3 to drive the movable cover 3 to rotate between the closed position and the open position.

[0036] like Figures 1 to 3As shown, in this embodiment of the present invention, when the anode furnace 200 is in the reduction stage or when copper is tapped for anode plate casting, the movable hood 3 needs to be in the closed position. The movable hood 3 closes the working opening on the fixed hood 2, and the movable hood 3 and the fixed hood 2 form a hood that seals the furnace opening. The flue gas escaping from the furnace opening is discharged from the flue pipe 23 of the fixed hood 2. When the anode furnace 200 needs to be fed through the furnace opening or slag removed through the furnace opening, the drive component 4 drives the movable hood 3 to rotate, pulling the movable hood 3 upward around its hinge point with the fixed hood 2. When the movable hood 3 reaches the open position, the drive component 4 stops. When the anode furnace 200 needs to be in the reduction stage or when copper is tapped for anode plate casting, the movable hood 3 rotates downward. When the movable hood 3 reaches the closed position, the working opening is closed, and the drive component 4 stops.

[0037] The environmentally friendly fume hood 100 for the anode furnace of this embodiment features a movable hood 3 hinged to a fixed hood 2. A drive assembly 4 moves the movable hood 3 to close or open the working opening. When the working opening is closed, the movable hood 3 and the fixed hood 2 work together to collect the escaping flue gas, which is then discharged from the exhaust pipe 23 to the downstream flue gas treatment system. This prevents the flue gas from being exposed to the working environment and thus avoids harm to personnel health, reducing environmental pollution. Furthermore, the environmentally friendly fume hood 100 is positioned entirely above the anode furnace 200, and the movement space of the movable hood 3 is also located above the anode furnace 200, eliminating the impact of the anode furnace 200's operation on the furnace front passage and surrounding plant platform space, thus avoiding potential safety issues.

[0038] Furthermore, the working opening includes a first opening 211 and a second opening 221. The fixed cover 2 has a first side 21 and a second side 22, with one end of the first side 21 connected to the second side 22. The first side 21 has the first opening 211, which is opposite to the furnace opening in its extending direction. The second side 22 has the second opening 221, a portion of which is opposite to the furnace opening in the horizontal direction. The second opening 221 is connected to the first opening 211. Figure 2 and Figure 4 As shown, the first opening 211 is located above the furnace opening, and the second opening 221 is located in front of the furnace opening. In this open position, the space above and in front of the furnace opening is exposed, thus leaving space for the movement of the material bag when adding material to the furnace opening, which facilitates the material adding operation.

[0039] like Figures 1 to 3 , Figure 5 and Figure 6As shown, the movable cover 3 includes a first cover 31 and a second cover 32. One end of the first cover 31 is hinged to the fixed cover 2, and the other end of the first cover 31 is hinged to the second cover 32. The first cover 31 is connected to the drive assembly 4. In the closed position, the first cover 31 closes the first opening 211, and the second cover 32 fits against the second opening 221. The first cover 31 and the second cover 32 are hinged together and can rotate relative to each other. When the drive assembly 4 drives the first cover 31 to rotate upward or downward, the second cover 32, located at the other end of the first cover 31, always remains naturally hanging down under the action of gravity. The second cover 32 moves with the rotation of the first cover 31. As the first cover 31 moves away from the first opening 211, the second cover 32 also moves away from the second opening 221. Thus, in the open position, both the first opening 211 and the second opening 221 are exposed. As the first cover 31 gradually moves closer to the first opening 211, the second cover 32, relying on gravity, gradually moves down from the upper rear of the second opening 221 to the upper side, and then moves from the upper side to the second opening 221. Thus, in the closed position, the first opening 211 is closed by the first cover 31, and the second opening 221 is closed by the second cover 32.

[0040] The first cover 31 and the second cover 32 are hinged together. The second cover 32 moves with the rotation of the first cover 31, so there is no need to set an additional drive device to control the movement of the second cover 32. The second opening 221 can be exposed and closed. At the same time, the second cover 32 can rotate relative to the first cover 31. The second cover 32 and the first cover 31 are not rigidly connected, so that hard collisions with the fixed cover 2 can be avoided during the movement of the second cover 32, which would cause damage to the movable cover 3.

[0041] Furthermore, in this closed position, the first cover 31 is fitted against the first side panel 21. In other words, as... Figure 1 , Figure 3 and Figure 5 As shown, the dimension of the first cover 31 in the left-right direction is larger than the dimension of the first opening 211 in the left-right direction. When the first cover 31 closes the first outlet, the first cover 31 fits against the first side 21 of the fixed cover 2. On the one hand, this increases the contact area between the first cover 31 and the fixed cover 2, improving the sealing performance of the first cover 31 to the first opening 211, thereby further preventing the problem of smoke overflowing from the first outlet. On the other hand, the fixed cover 2 supports the first cover 31 through the first side 21, which can act as a stop for the first cover 31 to prevent the movable cover 3 from overtraveling.

[0042] Furthermore, the other end of the first side 21 is higher than or equal to that end. That is, as... Figures 1 to 4As shown, the rear end of the first side 21 is higher than or equal to the front end of the first side 21. In other words, in this closed position, when one end (rear end) of the first hood 31 is higher than or equal to the other end (front end) of the first hood 31, the flue gas escaping from the furnace opening will not accumulate at the connection between the first hood 31 and the second hood 32, that is, it will not accumulate on the front side of the fixed hood 2, thereby ensuring that the flue gas can be smoothly discharged from the flue pipe 23, and also avoiding the problem of a small amount of flue gas accumulating at the first outlet and causing overflow.

[0043] Specifically, such as Figure 2 As shown, at the other end of the first side 21, the angle between the first side 21 and the horizontal plane is α, where 0° < α ≤ 60°. Thus, in this closed position, as... Figure 1 As shown, the first hood 31 is inclined at the front and high at the back. When the flue gas escaping from the furnace mouth floats upward to the first hood 31, it continues to float backward and upward along the first hood 31, further preventing the flue gas from accumulating on the front side of the first hood 31.

[0044] For example, the angle between the first side 21 and the horizontal plane is 5°, 10°, 15°, 20°, 30°, 45° or 60°.

[0045] exist Figure 1 In the embodiment shown, the angle between the first side 21 and the horizontal plane is 30°.

[0046] In some embodiments, the flue pipe 23 is located at the other end of the first side 21, and the flue pipe 23 is higher than the first side 21. In this closed position, the heights of the second hood 32, the first hood 31, and the flue pipe 23 increase sequentially, conforming to the movement law of flue gas (high-temperature flue gas) from low to high, thereby ensuring that the flue gas overflowing from the furnace opening is smoothly discharged from the flue pipe 23.

[0047] Specifically, such as Figure 2 and 7 As shown, the frame 1 is a stepped frame with a first step surface 11, a second step surface 12, and a third step surface 13. The heights of the first step surface 11, the second step surface 12, and the third step surface 13 increase sequentially. The drive assembly 4 is located on the third step surface 13. Figures 2 to 4As shown, the fixed cover 2 includes a front cover 24, a rear cover 25, and an upper cover 26. The front cover 24 is located on the first stepped surface 11, and the rear cover 25 is located on the second stepped surface 12. The upper end of the rear cover 25 is open, and the upper cover 26 is located at the open position of the rear cover 25. A smoke outlet pipe 23 is provided on the upper cover 26. The front cover 24, the rear cover 25, and the upper cover 26 are spliced ​​together to form the cover. The front cover 24 and the rear cover 25 cover the anode furnace 200. The front side of the front cover 24 forms a second side 22, and the upper side of the front cover 24 forms a first side 21. The front end of the first side 21 is located on the first stepped surface 11, and the rear end of the first side 21 is located on the second stepped surface 12. When the movable cover 3 is in the closed position, the movable cover 3, the front cover 24, the rear cover 25, and the upper cover 26 form a cover with smoke entering from the front at the bottom and smoke exiting from the rear at the top.

[0048] In some embodiments, the drive assembly 4 includes a winch 41, a pulley block 42, and a winch rope 43. Both the winch 41 and the pulley block 42 are mounted on the frame 1. The pulley block 42 is higher than the fixed cover 2. One end of the winch rope 43 is wound around the winch 41, and the other end of the winch rope 43 is wound around the pulley block 42 and connected to the movable cover 3. Specifically, this other end of the winch rope 43 is connected to the first cover 31.

[0049] When the movable cover 3 needs to move from the closed position to the open position, the winch 41 winds up the winch rope 43, causing the first cover 31 to rotate clockwise. The other end of the first cover 31 and the second cover 32 rise. When the movable cover 3 moves to the open position, the winch 41 stops. When the movable cover 3 needs to move from the open position to the closed position, the winch 41 releases the rope. Under its own weight, the movable cover 3 rotates counterclockwise around the hinge point between the first cover 31 and the fixed cover 2. The first cover 31 and the second cover 32 move downwards. When the movable cover 3 reaches the closed position, the winch 41 stops.

[0050] The drive assembly 4 uses a winch 41 and a winch rope 43 to move the movable cover 3. The winch rope 43 has length and flexibility, and the pulley block 42 can redirect and guide the winch rope 43, so that the arrangement position of the winch 41 is less restricted. Thus, the winch 41 can be set away from the anode furnace 200, thereby avoiding the high temperature area formed by the anode furnace 200, improving the service life of the winch 41, and also facilitating maintenance and repair.

[0051] Specifically, a connecting ring (not shown in the figure) is welded onto the first cover 31, and the other end of the winch rope 43 is connected to the connecting ring. The drive assembly 4 applies an external force to the first cover 31 at the connecting ring. This prevents the first cover 31 from contacting rigid structures (such as hooks), avoids deformation of the first cover 31 that would affect its sealing performance to the first opening 211, and improves the flue gas collection effect.

[0052] Specifically, the winch device 41 includes a winch and a controller. The winch winds a winch rope 43, and the controller is electrically connected to the winch to control the stroke of the winch rope 43. Specifically, the drive part of the winch includes a motor and a reducer, and the controller is an electronic master speed ratio controller. The electronic master speed ratio controller controls the rope winding and unwinding process of the winch device 41, that is, controls the stroke of the winch rope 43, thereby controlling the movement of the movable cover 3 between the closed position and the open position.

[0053] The winch 41 also includes a brake, which is used to brake the winch 41 when it is stopped, so as to ensure the stability and reliability of the winch 41.

[0054] Specifically, the winch rope 43 is a steel wire rope.

[0055] Specifically, the hoisting device 41 is located above and spaced apart from the smoke outlet pipe 23. (See also...) Figure 1 The environmentally friendly fume hood 100 of this utility model embodiment is generally lower in the front and higher in the back. The hoisting device 41 located at a higher position ensures that the connection between the wire rope and the first hood body 31 is not interfered with by the fixed hood body 2 and the frame 1, and at the same time, it can maintain a distance from the high temperature area.

[0056] In this open position, the other end of the winch rope 43 is lower than the height of the pulley block 42, and the connection point between the winch rope 43 and the movable cover 3 is located above the middle of the movable cover 3. (See reference...) Figure 2 As shown, the connection point between the winch rope 43 and the first cover 31 is located above the middle of the first cover 31. This not only makes the winding and unwinding length of the winch rope 43 shorter and the stroke of the winch rope 43 shorter, but also facilitates the drive component 4 to apply rotational force to the first cover 31, which is conducive to the winch device 41 driving the movable cover 3 to move quickly, so as to realize the efficient opening and closing of the movable cover 3.

[0057] Specifically, in Figure 1 Only one pulley is shown in the illustration. In specific embodiments, the number and arrangement of pulley blocks 42 will be determined based on actual conditions. To ensure secure installation and safe use, pulley blocks 42 are fixed to the frame 1 by bolts and welding.

[0058] In some other embodiments, the drive component 4 is a geared motor mounted on the frame 1, and its output end is connected to the rotation shaft of the movable cover 3. By directly connecting the geared motor to the movable cover 3, the movable cover 3 rotates between the closed and open positions, thus achieving the purpose of rotating the movable cover 3 around the hinge point.

[0059] In other embodiments, the drive assembly 4 employs a linear motion actuator, such as a cylinder, hydraulic cylinder, or electric push rod, which connects the frame 1 and the movable cover 3, and drives the movable cover 3 to rotate between the closed position and the open position.

[0060] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model.

[0061] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0062] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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 utility model according to the specific circumstances.

[0063] In this utility model, 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," "on top of," and "over" 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.

[0064] In this utility model, 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 this utility model. 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.

[0065] 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. An environmentally friendly fume hood (100) for an anode furnace, characterized in that, include: A frame (1) is mounted across the anode furnace (200); A fixed cover (2) is provided on the frame (1). The fixed cover (2) covers the furnace opening of the anode furnace (200). The fixed cover (2) is provided with a working opening. The furnace opening is opposite to a part of the working opening in its extension direction. The fixed cover (2) is provided with a smoke outlet pipe (23). A movable cover (3) is rotatably mounted on the fixed cover (2) between a closed position and an open position. In the closed position, the movable cover (3) covers the fixed cover (2) to close the working opening. In the open position, the movable cover (3) is offset from the furnace opening in the extension direction of the furnace opening so that the working opening is exposed. and A drive assembly (4) is disposed on the frame (1) and is connected to the movable cover (3) to drive the movable cover (3) to rotate between the closed position and the open position.

2. The environmentally friendly fume hood (100) for an anode furnace according to claim 1, characterized in that, The working opening includes a first opening (211) and a second opening (221). The fixed cover (2) has a first side (21) and a second side (22). One end of the first side (21) is connected to the second side (22). The first opening (211) is provided on the first side (21). The first opening (211) is opposite to the furnace opening in the extension direction of the furnace opening. The second opening (221) is provided on the second side (22). A part of the second opening (221) is opposite to the furnace opening in the horizontal direction. The second opening (221) is connected to the first opening (211).

3. The environmentally friendly fume hood (100) for an anode furnace according to claim 2, characterized in that, The movable cover (3) includes a first cover (31) and a second cover (32). One end of the first cover (31) is hinged to the fixed cover (2), and the other end of the first cover (31) is hinged to the second cover (32). The first cover (31) is connected to the drive assembly (4). In the closed position, the first cover (31) closes the first opening (211), and the second cover (32) fits against the second opening (221).

4. The environmentally friendly fume hood (100) for an anode furnace according to claim 3, characterized in that, In the closed position, the first cover (31) fits against the first side (21).

5. The environmentally friendly fume hood (100) for an anode furnace according to claim 2, characterized in that, The other end of the first side (21) is higher than or equal to the said end.

6. The environmentally friendly fume hood (100) for an anode furnace according to claim 5, characterized in that, At the other end of the first side (21), the angle between the first side (21) and the horizontal plane is α, where 0° < α ≤ 60°.

7. The environmentally friendly fume hood (100) for an anode furnace according to claim 2, characterized in that, The smoke outlet pipe (23) is located at the other end of the first side (21), and the smoke outlet pipe (23) is higher than the first side (21).

8. The environmentally friendly fume hood (100) for an anode furnace according to claim 1, characterized in that, The drive assembly (4) includes a winch (41), a pulley block (42), and a winch rope (43). The winch (41) and the pulley block (42) are both mounted on the frame (1). The pulley block (42) is higher than the fixed cover (2). One end of the winch rope (43) is wound around the winch (41), and the other end of the winch rope (43) is wound around the pulley block (42) and connected to the movable cover (3).

9. The environmentally friendly fume hood (100) for an anode furnace according to claim 8, characterized in that, The hoisting device (41) is located above the smoke outlet pipe (23) and spaced apart from the smoke outlet pipe (23).

10. The environmentally friendly fume hood (100) for an anode furnace according to claim 8, characterized in that, In the open position, the height of the other end of the winch rope (43) is lower than the height of the pulley block (42), and the connection point between the winch rope (43) and the movable cover (3) is located above the middle of the movable cover (3).

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