Exhaust structure of water-cooled damper in non-ferrous smelting system waste heat boiler

Abstract

The application discloses a water-cooled damper exhaust structure of a waste heat boiler in a non-ferrous smelting system, which comprises: a mounting table fixed to an outlet flue outside a smelting furnace, two parallel tracks fixedly mounted on the mounting table; a water-cooled wall movably arranged on the two tracks through a plurality of track wheels, a smoke hood body arranged on the water-cooled wall, the smoke hood body and the water-cooled wall forming a bottom-opened flue gas containing chamber, an exhaust hood communicated with the flue gas containing chamber arranged on the sidewall of the smoke hood body, and a flue gas outlet of the exhaust hood connected with a gas inlet of a temporary reaction tank through an induced draft fan and a pipeline; each track wheel is installed on the water-cooled wall through a corresponding lifting structure, and each track wheel can make the water-cooled wall be lifted upward or lowered downward relative to the track wheel through the corresponding lifting structure. The structure greatly reduces environmental pollution and effectively improves the working environment.

Description

Technical Field

[0001] This invention relates to non-ferrous smelting systems, and more particularly to a waste heat boiler water-cooled gate exhaust structure in a non-ferrous smelting system. Background Technology

[0002] The outlet flue of the smelting furnace and the rising flue of the waste heat boiler are sealed together by an expansion joint. During the non-ferrous smelting process, the high-temperature flue gas generated enters the rising flue of the waste heat boiler through the outlet flue of the smelting furnace. The waste heat boiler recovers the heat from the high-temperature flue gas to improve energy utilization and reduce costs.

[0003] A water-cooled gate structure is installed on the outer side of the connection between the outlet flue of the smelting furnace and the rising flue of the waste heat boiler, i.e., on the outer side of the expansion joint. The traditional water-cooled gate structure is as follows: an installation platform is set on the smelting furnace, and two parallel tracks are fixedly installed on the installation platform, with the two tracks located in front of and behind the smelting furnace respectively; the water-cooled wall is movably set on the two tracks by several track wheels; under the action of external force, the water-cooled wall can slide on the two tracks by each track wheel.

[0004] During normal operation of the smelting furnace and waste heat boiler, the water-cooled wall is idle outside the expansion joint. The outlet flue of the smelting furnace and the rising flue of the waste heat boiler are sealed together by the expansion joint, so the high-temperature flue gas from the smelting furnace directly enters the rising flue of the waste heat boiler.

[0005] When the smelting furnace is operating normally, but the waste heat boiler malfunctions and needs maintenance, the expansion joint between the outlet flue of the smelting furnace and the rising flue of the waste heat boiler is raised or removed to leave a gap for the water-cooled wall to be inserted. The inserted water-cooled wall quickly cuts off the flue gas and reduces the temperature of the waste heat boiler, eliminating the need to shut down, discharge slag, and cool the smelting furnace before carrying out maintenance on the waste heat boiler, greatly shortening the cooling preparation time before maintenance.

[0006] However, the water-cooled gate structure described above only functions as a baffle. A large amount of untreated high-temperature flue gas escapes from the gap between the water-cooled wall and the outlet flue of the smelting furnace due to the obstruction of the water-cooled wall, spreading throughout the entire plant and even outside the plant. Furthermore, the high-temperature flue gas generated during non-ferrous smelting has a complex composition, SO... 2 With its high concentration, strong corrosiveness, and high dust content, the high-temperature flue gas that escapes into all directions will not only cause corrosion and damage to factory equipment, but also pollute the air on site and damage the surrounding environment. Summary of the Invention

[0007] The technical problem to be solved by this invention is to provide a waste heat boiler water-cooled gate exhaust structure in a non-ferrous smelting system that reduces environmental pollution and improves the working environment. When the hood body on the water-cooled wall is sealed and fitted with the outlet flue of the smelting furnace under normal working conditions, the high-temperature flue gas generated during smelting has nowhere to leak and can only be collected by the exhaust hood and then extracted by the induced draft fan and sent to a temporary reaction tank for treatment, thereby achieving the purpose of treating waste gas, reducing environmental pollution, and improving the working environment.

[0008] To solve the above problems, the technical solution adopted by the present invention is as follows: the waste heat boiler water-cooled gate flue gas exhaust structure in the non-ferrous smelting system includes: an installation platform fixed outside the outlet flue on the smelting furnace, two parallel tracks fixedly installed on the installation platform, and a water-cooled wall; the two tracks are arranged in front of and behind the top of the outlet flue on the smelting furnace, and each track is placed horizontally in the left-right direction; the water-cooled wall is movably set on the two tracks by a number of track wheels, and under the action of external force, the water-cooled wall can move along the two tracks by each track wheel. A fume hood body is installed on the water-cooled wall, and the fume hood body and the water-cooled wall form a flue gas containing chamber with an open bottom. An exhaust hood communicating with the flue gas containing chamber is installed on the side wall of the fume hood body. The flue gas outlet of the exhaust hood is connected to the air inlet of the temporary reaction tank through an induced draft fan and pipeline. Each track wheel is installed on the water-cooled wall through a corresponding lifting structure. Each track wheel can lift the water-cooled wall relative to the track wheel through its corresponding lifting structure, so that the height of the bottom end face of the fume hood body is higher than the height of the top end face of the outlet flue on the smelting furnace. Each track wheel can lower the water-cooled wall relative to the track wheel through its corresponding lifting structure, so that the fume hood body on the water-cooled wall above the top end face of the outlet flue on the smelting furnace is lowered to contact the top end face of the outlet flue on the smelting furnace.

[0009] During normal operation of the smelting furnace and waste heat boiler, the outlet flue of the smelting furnace and the rising flue of the waste heat boiler are sealed together by an expansion joint. At this time, the water-cooled wall is idle outside the expansion joint. When the smelting furnace is operating normally, but the waste heat boiler malfunctions and needs maintenance, the expansion joint between the outlet flue of the smelting furnace and the rising flue of the waste heat boiler is lifted or removed to create a gap for the water-cooled wall to be inserted. The water-cooled wall is then pushed between the outlet flue of the smelting furnace and the rising flue of the waste heat boiler. Then, the water-cooled wall located above the top surface of the outlet flue of the smelting furnace is lowered by the lifting structure until the hood body contacts the top surface of the outlet flue of the smelting furnace. At this time, the hood body of the water-cooled wall is sealed and fitted tightly with the outlet flue of the smelting furnace.

[0010] To improve the airtightness of the seal between the hood body on the water-cooled wall and the outlet flue on the smelting furnace, this solution sets a sealing gasket on the bottom surface of the hood body. At this time, the bottom surface of the hood body and the top surface of the outlet flue on the smelting furnace are in sealed contact through the sealing gasket, which further improves the airtightness and reduces the amount of high-temperature flue gas that escapes outward.

[0011] Furthermore, in the aforementioned waste heat boiler water-cooled gate exhaust structure of the non-ferrous smelting system, the lifting structure comprises: a lifting frame fixedly installed on the side wall of the water-cooled wall; one end of a hinged seat is hinged to the lifting frame; the axle of the corresponding track wheel is movably supported on the other end of the hinged seat; the cam on the cam-loaded pressure rod is hinged to the lifting frame above the hinged seat; the outer circumferential profile of the cam is always in contact with the hinged seat; and during the swinging of the pressure rod from lifting to lowering, the distance between the hinge point between the cam and the lifting frame and the contact point between the cam and the hinged seat gradually decreases; the pressure rod is lifted upwards... After the lifting mechanism is activated, the distance between the hinge point between the cam and the lifting frame and the contact point between the cam and the hinge seat is at its maximum. When the water-cooled wall moves along the two tracks via the track wheels to the outlet flue on the smelting furnace and the rising flue on the waste heat boiler, there is a gap between the top surface of the hood body and the outlet flue on the smelting furnace. After the pressure rod is lowered, the distance between the hinge point between the cam and the lifting frame and the contact point between the cam and the hinge seat is at its minimum, thereby lowering the water-cooled wall located above the top surface of the outlet flue on the smelting furnace until the hood body contacts the top surface of the outlet flue on the smelting furnace.

[0012] In this scheme, the number of track wheels is preferably selected as four. At this time, there are four lifting structures, and their specific distribution is as follows: two lifting structures are set on the front side wall and two on the rear side wall of the water-cooled wall. The two lifting structures on the front side wall of the water-cooled wall are located on the left and right sides of the front side wall of the water-cooled wall, and the two lifting structures on the rear side wall of the water-cooled wall are located on the left and right sides of the rear side wall of the water-cooled wall.

[0013] Due to slag shedding from the rising flue of the waste heat boiler, when the water-cooled wall is inserted between the outlet flue of the smelting furnace and the rising flue of the waste heat boiler, problems such as deformation and leakage due to impact can easily occur. If the water-cooled wall is deformed, it will inevitably affect the sealing fit between the hood body of the water-cooled wall and the outlet flue of the smelting furnace, leading to reduced airtightness at the joint and increased leakage of high-temperature flue gas. To address this issue, this solution incorporates an anti-impact structure at the top of the water-cooled wall. This structure consists of a reinforcing frame fixedly installed at the top of the water-cooled wall, with a steel plate fixedly covering the top of the reinforcing frame. This design protects the flatness of the bottom surface of the hood body on the water-cooled wall, ensuring airtightness during the induced draft and exhaust process, while also protecting the water-cooled wall from damage and leakage.

[0014] Furthermore, in the aforementioned waste heat boiler water-cooled gate exhaust structure of the non-ferrous smelting system, the upper edge of the smoke hood body extends upward to the edge of the steel plate for sealing connection.

[0015] Furthermore, in the aforementioned waste heat boiler water-cooled gate exhaust structure of the non-ferrous smelting system, the reinforcing frame is composed of several rectangular tubes spliced ​​together.

[0016] Furthermore, in the aforementioned waste heat boiler water-cooled gate flue gas exhaust structure in the non-ferrous smelting system, the exhaust hood is an L-shaped structure composed of a vertical exhaust hood and a horizontal exhaust hood. The flue gas outlet of the exhaust hood is located at the top of the vertical exhaust hood, the inner cavity cross-section of the horizontal exhaust hood gradually increases from right to left, the right open opening of the horizontal exhaust hood is the flue gas inlet of the exhaust hood, and a connection port is provided in the lower left section of the exhaust hood body. The right open opening of the horizontal exhaust hood is sealed and connected to the connection port.

[0017] The beneficial effects of this invention are as follows: After the water-cooled wall is pushed between the outlet flue of the smelting furnace and the rising flue of the waste heat boiler, the hood body on the water-cooled wall can be lowered through the lifting structure to seal and contact the top surface of the outlet flue of the smelting furnace, ensuring that the high-temperature flue gas generated by smelting has nowhere to leak and can only be gathered by the exhaust hood and then drawn out by the induced draft fan and sent to the temporary reaction pool for waste gas treatment, which greatly reduces environmental pollution and effectively improves the working environment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the waste heat boiler water-cooled gate flue in the non-ferrous smelting system described in this invention, where the water-cooled wall is located outside the outlet flue on the smelting furnace.

[0019] Figure 2 yes Figure 1 A partial structural diagram of the lifting structure when the pressure plate is raised.

[0020] Figure 3 yes Figure 2 A schematic diagram of the partial structure viewed from the left.

[0021] Figure 4 This is a schematic diagram of the structure of the water-cooled wall in the waste heat boiler water-cooled gate flue of the non-ferrous smelting system described in this invention, located on the outlet flue of the smelting furnace.

[0022] Figure 5 yes Figure 4 A partial structural diagram of the pressure plate in the lifting structure when it is lowered.

[0023] Figure 6 yes Figure 5 A schematic diagram of the partial structure viewed from the left. Detailed Implementation

[0024] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments.

[0025] For ease of description, this implementation uses Figure 1 The left-hand direction shown is defined as "left". Figure 1 The direction to the right is defined as "right," and the direction pointing towards the paper is defined as "from back to front." All directional terms used in this text shall adhere to this definition for consistency.

[0026] The waste heat boiler water-cooled damper flue gas exhaust structure in the non-ferrous smelting system described in this embodiment is as follows: Figure 1 and Figure 3 As shown, the system includes: a mounting platform 2 fixed to the outside of the outlet flue 1 on the smelting furnace; two parallel tracks 21 fixedly mounted on the mounting platform 2, positioned in front of and behind the top of the outlet flue 1 on the smelting furnace, with each track 21 arranged horizontally to the left and right. A water-cooled wall 3 is movably mounted on the two tracks 21 via several track wheels 31, allowing the water-cooled wall 3 to move along the two tracks 21 under external force. The water-cooled wall 3 is a modular water-cooled wall tube array structure.

[0027] like Figure 1 and 2 As shown, a fume hood body 4 is provided on the water-cooled wall 3. The fume hood body 4 and the water-cooled wall 3 form a flue gas containing chamber with an open bottom. An exhaust hood 41 communicating with the flue gas containing chamber is provided on the side wall of the fume hood body 4. The flue gas outlet 413 of the exhaust hood 41 is connected to the air inlet of the temporary reaction tank through an induced draft fan and pipeline.

[0028] Each track wheel 31 is mounted on the water-cooled wall 3 via a corresponding lifting structure. Each track wheel 31 can raise the water-cooled wall 3 relative to that track wheel 31 through its corresponding lifting structure, thereby making the height of the bottom surface of the fume hood body 4 higher than the height of the top surface of the outlet flue 1 on the smelting furnace. Figure 3 The diagram shows the state after the water-cooled wall 3 is raised relative to the track wheel 31 by its respective lifting structure. Each track wheel 31 can lower the water-cooled wall 3 relative to it via its corresponding lifting structure, thereby bringing the hood body 4 on the water-cooled wall above the top surface of the outlet flue 1 on the smelting furnace into contact with the top surface of the outlet flue 1 on the smelting furnace. Figure 6 The diagram shows the state of the water-cooled wall 3 after it is lowered relative to the track wheel 31 by its respective lifting structure.

[0029] During normal operation of the smelting furnace and waste heat boiler, the outlet flue 1 of the smelting furnace and the rising flue 5 of the waste heat boiler are sealed together by an expansion joint. At this time, the water-cooled wall 3 is idle outside the expansion joint. When the smelting furnace is operating normally, but the waste heat boiler malfunctions and needs maintenance, the expansion joint between the outlet flue 1 of the smelting furnace and the rising flue 5 of the waste heat boiler is lifted or removed to leave a gap for the water-cooled wall 3 to be inserted. At this time, the water-cooled wall 3 is pushed between the outlet flue 1 of the smelting furnace and the rising flue 5 of the waste heat boiler. Then, the water-cooled wall 3, located above the top surface of the outlet flue 1 of the smelting furnace, is lowered by the lifting structure until the hood body 4 contacts the top surface of the outlet flue 1 of the smelting furnace. At this time, the hood body 4 of the water-cooled wall 3 is sealed and fitted with the outlet flue 1 of the smelting furnace.

[0030] In this embodiment, in order to improve the airtightness of the seal between the hood body 4 on the water-cooled wall 3 and the outlet flue 1 on the smelting furnace, a sealing gasket is provided on the bottom surface of the hood body 4. At this time, the hood body 4 and the top surface of the outlet flue 1 on the smelting furnace are in sealed contact through the sealing gasket, which further improves the airtightness and reduces the amount of high-temperature flue gas that escapes outward.

[0031] like Figure 2 and Figure 3As shown, the lifting structure in this embodiment is as follows: a lifting frame 6 is fixedly installed on the side wall of the water-cooled wall 3. One end of the hinge seat 61 is hinged to the lifting frame 6, and the axle of the corresponding track wheel 31 is movably supported on the other end of the hinge seat 61. At this time, the track wheel 31 can rotate relative to its own axle axis. The cam 71 on the pressure rod 7 with cam 71 is hinged to the lifting frame 6 above the hinge seat 61. The outer circumferential contour surface of the cam 71 is always in contact with the hinge seat 61. During the process of the pressure rod 7 swinging from lifting to lowering, the distance between the hinge point between the cam 71 and the lifting frame 6 and the contact point between the cam 71 and the hinge seat 61 gradually decreases. When the pressure rod 7 is lifted upward, the distance between the hinge point between the cam 71 and the lifting frame 6 and the contact point between the cam 71 and the hinge seat 61 gradually increases, thereby forcing the hinge seat 61 to swing downward around the hinge point between the hinge seat 61 and the lifting frame 6. When the pressure rod 7 is fully raised, the distance between the hinge point between the cam 71 and the lifting frame 6 and the contact point between the cam 71 and the hinge seat 61 is at its maximum. The hinge seat 61 swings downward around the hinge point between the hinge seat 61 and the lifting frame 6 to the lower limit position. At this time, the track wheel 31 swings downward and away from the water-cooled wall 3 relative to the water-cooled wall 3. Since the track wheel 31 is located on the track 21, the water-cooled wall 3 is raised upward relative to the track 21. At this time, the raised water-cooled wall 3 can smoothly move along the two tracks 21 through the track wheels 31 to the space between the outlet flue 1 on the smelting furnace and the rising flue 5 on the waste heat boiler. This is because the raised water-cooled wall 3 creates a gap H1 between the smoke hood body 4 on the water-cooled wall 3 and the top surface of the outlet flue 1 on the smelting furnace. Figure 2 and Figure 3 As shown.

[0032] As the pressure rod 7 is lowered, the distance between the hinge point between the cam 71 and the lifting frame 6 and the contact point between the cam 71 and the hinge seat 61 gradually decreases. Under the action of gravity, the hinge seat 61 swings upward around the hinge point between the hinge seat 61 and the lifting frame 6. When the pressure rod 7 is fully lowered, the distance between the hinge point between the cam 71 and the lifting frame 6 and the contact point between the cam 71 and the hinge seat 61 is at its minimum. The hinge seat 61 swings upward around the hinge point between the hinge seat 61 and the lifting frame 6 to its upper limit position. At this time, the track wheel 31 swings upward and approaches the water-cooled wall 3 relative to the water-cooled wall 3. Since the track wheel 31 is located on the track 21, the water-cooled wall 3 is lowered downward relative to the track 21. At this time, the hood body 4 on the water-cooled wall 3 above the top surface of the outlet flue 1 on the smelting furnace can contact the top surface of the outlet flue 1 on the smelting furnace. Figure 4 , Figure 5 and Figure 6 As shown.

[0033] In summary, this embodiment uses a lifting structure to raise the water-cooled wall 3 relative to the track 21, creating a gap between the bottom surface of the hood body 4 on the water-cooled wall 3 and the top surface of the outlet flue 1 on the smelting furnace. This ensures that the water-cooled wall 3 can move smoothly along the two tracks 21 to the top surface of the outlet flue 1 on the smelting furnace without rubbing against it. Then, the lifting structure lowers the water-cooled wall 3 relative to the track 21, sealing the bottom surface of the hood body 4 on the water-cooled wall 3 with the top surface of the outlet flue 1 on the smelting furnace. This ensures that the high-temperature flue gas generated during smelting will not leak out through the gap between the hood body 4 on the water-cooled wall 3 and the outlet flue 1 on the smelting furnace. Instead, it will be collected by the exhaust hood 41 and drawn out by the induced draft fan, then sent to a temporary reaction tank for waste gas treatment. This meets the requirements for temporary emission of smelting flue gas during the maintenance of the waste heat boiler, greatly reducing environmental pollution and effectively improving the working environment. After the maintenance is completed, the pressure rod 7 can be lifted to smoothly pull the water-cooled wall 3 out from between the outlet flue 1 on the smelting furnace and the rising flue 5 on the waste heat boiler.

[0034] In this embodiment, the number of track wheels 31 is preferably four. At this time, there are four lifting structures, and their specific distribution positions are as follows: two lifting structures are respectively set on the front side wall and the rear side wall of the water-cooled wall 3. The two lifting structures on the front side wall of the water-cooled wall 3 are located on the left and right sides of the front side wall of the water-cooled wall 3, and the two lifting structures on the rear side wall of the water-cooled wall 3 are located on the left and right sides of the rear side wall of the water-cooled wall 2.

[0035] In actual use, the working environment is harsh. Due to slag falling from the rising flue 5 on the waste heat boiler, when the water-cooled wall 3 is inserted between the outlet flue 1 on the smelting furnace and the rising flue 5 on the waste heat boiler, problems such as deformation and leakage of the water-cooled wall 3 due to impact can easily occur. If the water-cooled wall 3 is deformed, it will inevitably affect the sealing fit between the hood body 4 on the water-cooled wall 3 and the outlet flue 1 on the smelting furnace, resulting in reduced airtightness at the joint and increased leakage of high-temperature flue gas. To address this issue, this embodiment provides an anti-impact structure on the top of the water-cooled wall 3. The anti-impact structure is a reinforcing frame 8 fixedly installed on the top of the water-cooled wall 3. More preferably, the reinforcing frame 8 is composed of several rectangular tubes spliced ​​together, and the rigidity of the reinforcing frame 8 composed of rectangular tubes is better. A steel plate 9 is fixedly covered on the top of the reinforcing frame 8. More preferably, the upper edge of the hood body 4 extends upward to seal and connect with the edge of the steel plate 9.

[0036] This design not only improves the rigidity of the water-cooled wall 3 and ensures the flatness of the bottom surface of the flue hood body 4 on the water-cooled wall 3, thus ensuring airtightness during the induced draft and exhaust process, but also protects the water-cooled wall 3 from being damaged and leaking water by slag falling from the rising flue on the waste heat boiler.

[0037] More preferably, in this embodiment, the smoke hood 41 is an L-shaped structure composed of a vertical smoke hood 411 and a horizontal smoke hood 412. The smoke outlet 413 of the smoke hood 41 is located at the top of the vertical smoke hood 411. The inner cavity cross-section of the horizontal smoke hood 412 gradually increases from right to left. The open right side of the horizontal smoke hood 412 is the smoke inlet of the smoke hood 41. A connection port is provided in the lower left section of the smoke hood body 4. The open right side of the horizontal smoke hood 412 is sealed and connected to the connection port.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any modifications or equivalent changes made based on the technical essence of the present invention shall still fall within the scope of protection claimed by the present invention.

Claims

1. The flue gas exhaust structure of the waste heat boiler in the non-ferrous smelting system, including: An installation platform fixed outside the outlet flue of the smelting furnace, and two parallel tracks fixedly installed on the installation platform; The two tracks are positioned in front of and behind the top of the outlet flue of the smelting furnace, each track being horizontally aligned left and right. The water-cooled wall is movably mounted on the two tracks via several track wheels, allowing it to move along the tracks under external force. The feature is that a fume hood body is mounted on the water-cooled wall, forming a bottom-open flue gas receiving chamber with the fume hood body and the water-cooled wall. An exhaust hood communicating with the flue gas receiving chamber is mounted on the side wall of the fume hood body, and the flue gas outlet of the exhaust hood is connected to an induced draft fan. The pipeline is connected to the air inlet of the temporary reaction tank; each track wheel is installed on the water-cooled wall through a corresponding lifting structure. Each track wheel can lift the water-cooled wall relative to the track wheel through its corresponding lifting structure, so that the height of the bottom surface of the fume hood body is higher than the height of the top surface of the outlet flue on the smelting furnace; each track wheel can lower the water-cooled wall relative to the track wheel through its corresponding lifting structure, so that the fume hood body on the water-cooled wall above the top surface of the outlet flue on the smelting furnace is lowered to the level of the outlet flue on the smelting furnace. The top surface is in contact; the lifting structure is as follows: a lifting frame is fixedly installed on the side wall of the water-cooled wall, one end of the hinge seat is hinged to the lifting frame, and the wheel axle of the corresponding track wheel is movably supported on the other end of the hinge seat; the cam on the cam-loaded pressure rod is hinged to the lifting frame above the hinge seat, the outer circumferential contour surface of the cam is always in contact with the hinge seat, and during the process of the pressure rod swinging from lifting to lowering, the distance between the hinge point between the cam and the lifting frame and the contact point between the cam and the hinge seat gradually decreases; after the pressure rod is lifted upward, the distance between the cam and the lifting frame... When the distance between the hinge point and the contact point between the cam and the hinge seat is at its maximum, and when the water-cooled wall moves along the two tracks via each track wheel to the outlet flue on the smelting furnace and the rising flue on the waste heat boiler, there is a gap between the top surface of the hood body and the outlet flue on the smelting furnace; after the pressure rod is lowered, the distance between the hinge point between the cam and the lifting frame and the contact point between the cam and the hinge seat is at its minimum, thereby lowering the water-cooled wall located above the top surface of the outlet flue on the smelting furnace until the hood body contacts the top surface of the outlet flue on the smelting furnace.

2. The flue gas exhaust structure of the waste heat boiler water-cooled damper in the non-ferrous smelting system according to claim 1, characterized in that: Two lifting structures are respectively installed on the front side wall and the rear side wall of the water-cooled wall. The two lifting structures on the front side wall of the water-cooled wall are located on the left and right sides of the front side wall of the water-cooled wall, and the two lifting structures on the rear side wall of the water-cooled wall are located on the left and right sides of the rear side wall of the water-cooled wall.

3. The waste heat boiler water-cooled damper flue gas exhaust structure in the non-ferrous smelting system according to claim 1, characterized in that: An anti-smashing structure is provided on the top of the water-cooled wall; the anti-smashing structure is: a reinforcing frame is fixedly installed on the top of the water-cooled wall, and a steel plate is fixedly covered on the top of the reinforcing frame.

4. The waste heat boiler water-cooled damper flue gas exhaust structure in the non-ferrous smelting system according to claim 3, characterized in that: The upper edge of the fume hood extends upwards to seal the edge of the steel plate.

5. The waste heat boiler water-cooled damper flue gas exhaust structure in a non-ferrous smelting system according to claim 3 or 4, characterized in that: The reinforcing frame is composed of several rectangular tubes joined together.

6. The waste heat boiler water-cooled damper flue gas exhaust structure in the non-ferrous smelting system according to claim 1, characterized in that: The smoke hood is an L-shaped structure consisting of a vertical smoke hood and a horizontal smoke hood. The smoke outlet of the smoke hood is located at the top of the vertical smoke hood. The cross-section of the inner cavity of the horizontal smoke hood gradually increases from right to left. The open right side of the horizontal smoke hood is the smoke inlet of the smoke hood. A connection port is provided in the lower left section of the smoke hood body. The open right side of the horizontal smoke hood is sealed and connected to the connection port.

7. The waste heat boiler water-cooled damper flue gas exhaust structure in a non-ferrous smelting system according to claim 1, 2, 3, or 4, characterized in that: A sealing gasket is provided on the bottom surface of the fume hood body. After the pressure rod is lowered down, the water-cooled wall above the top surface of the outlet flue on the smelting furnace is lowered down to the fume hood body and the top surface of the outlet flue on the smelting furnace are sealed and contacted by the sealing gasket.

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