A multi-sectioned climbing flue

Abstract

The present application provides a kind of multi-section climbing flue gas pipeline, including support tower, the support tower inside is equipped with support mounting frame, the support mounting frame inside is equipped with flue gas pipeline, the flue gas pipeline one side is equipped with climbing pipeline, the climbing pipeline is communicated with exhaust device, flue gas pipeline, the flue gas pipeline outside is equipped with positioning assembly;The flue gas pipeline includes bottom pipeline, lengthening pipeline and top pipeline, the bottom pipeline top is equipped with multiple lengthening pipelines.The present application is positioned by the positioning plate that the support beam inside is inclinedly arranged, when lengthening pipeline, top pipeline hoisting falls and is assembled, it can slide down to the arc surface inside positioning plate, so that the lengthening pipeline, top pipeline corresponding to positioning plate is connected with bottom pipeline top end assembly more conveniently, when lengthening pipeline, top pipeline and bottom pipeline are assembled, positioning plate will rotate inwards and be attached to lengthening pipeline, top pipeline outside and support reinforcement, so that the connection of exhaust pipe and support tower is more firm and stable.

Description

Technical Field

[0001] This invention relates to the field of smoke extraction equipment technology, specifically to a multi-stage ascending flue gas duct. Background Technology

[0002] With the continuous development of modern industry, environmental protection has become increasingly important. As a result, the requirements for the emission of waste gas and flue gas in factories are becoming more and more stringent. When factories need to emit waste gas and flue gas, they not only need to undergo multiple pollution reduction treatments, but also need to send the waste gas and flue gas to a certain height before emission in order to avoid affecting the air on the ground.

[0003] When existing flue gas ducts are used for exhaust, the common method is to use an exhaust device to discharge the exhaust gas into the flue gas duct. The exhaust gas enters the flue gas duct and rises to the top of the flue gas duct for discharge. Since the flue gas duct needs to be discharged at a high height, the flue gas duct is often composed of multiple sections. In order to enable the flue gas duct to discharge smoke normally, it is usually necessary to use a support tower to support and install it.

[0004] However, existing flue gas ducts often have the following problems during the assembly process:

[0005] 1. Flue gas ducts are usually suspended and assembled. When two flue gas ducts are in contact with each other, misalignment or uneven positions are inevitable. Assembly personnel often need to calibrate and install them. However, flue gas ducts are large in size and heavy in weight, which makes it difficult and laborious for assembly personnel to calibrate and install them, and also greatly increases the difficulty of assembling flue gas ducts.

[0006] 2. When assembling two flue gas pipes, they are usually fixed by threads or welding, which results in low strength at the connection of the flue gas pipes. After long-term use, gaps and cracks are likely to appear at the connection, leading to smoke and gas leakage.

[0007] In summary, there is a need for a multi-stage climbing flue gas duct that is easy to assemble. Summary of the Invention

[0008] In view of the shortcomings of the prior art, the present invention provides a multi-stage ascending flue gas duct, which solves the problems mentioned in the background art.

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] A multi-stage climbing flue gas duct includes a support tower, a support mounting frame inside the support tower, a flue gas duct inside the support mounting frame, a climbing pipe on one side of the flue gas duct, the climbing pipe communicating with a smoke exhaust device and the flue gas duct, and a positioning component on the outside of the flue gas duct.

[0011] The flue gas duct includes a bottom duct, an extended duct, and a top duct. The bottom duct has multiple extended ducts at its top, and the extended ducts have a top duct at their top ends. Assembly components are provided at the connection points of the climbing duct, the bottom duct, the extended ducts, and the top duct. The positioning components are correspondingly set with the extended ducts and the top duct.

[0012] Furthermore, the positioning component includes a support beam and a positioning plate. The support beam is connected to the support tower, and a positioning plate is provided at one end of the support beam. Four sets of the support beam and positioning plate are provided on the outside of the extended pipe and the top pipe. The support beam and the positioning plate are rotatably connected.

[0013] Furthermore, the positioning component also includes a fixing ring, which is located on the outside of the positioning plate. The positioning plate is arc-shaped, and the inner arc of the positioning plate corresponds to the outer side of the extended pipe and the top pipe.

[0014] Furthermore, the positioning plate has two states: positioning and fixing.

[0015] In the positioning state: the positioning plate is inclined at the inner end of the support beam, the fixing ring is separated from the positioning plate, and the corresponding extended pipe or top pipe is located above the positioning plate;

[0016] In the fixed state, the positioning plate and the support beam are set at right angles. The inner side of the positioning plate is attached to the outer side of the extended pipe and the top pipe. The corresponding extended pipe, top pipe and bottom pipe are connected. The fixing ring is set on the outer side of the top of the positioning plate.

[0017] Furthermore, an assembly pipe is provided on the side of the bottom pipe, and the assembly pipe is disposed between the bottom pipe and the climbing pipe.

[0018] Furthermore, the assembly components are provided in multiple locations at multiple connection points of the climbing pipe, bottom pipe, extension pipe, and top pipe, and the connection method of the assembly components between the climbing pipe, bottom pipe, extension pipe, and top pipe is the same.

[0019] Furthermore, the assembly assembly includes an assembly tube, an assembly plate, a sealing ring, and an assembly slot. The assembly tube is located inside the end of the climbing pipe and the top of the bottom pipe and the extension pipe. The assembly plate is located inside the end of the assembly tube, the bottom of the extension pipe and the top pipe. Four assembly plates are arranged in a ring. The top of the assembly plate is provided with a sealing ring. The assembly slot is opened inside the assembly tube and is engaged with the assembly plate.

[0020] Furthermore, a filter device for filtering impurities is provided between the climbing pipe and the smoke exhaust device. The filter device includes an installation cylinder, an adjusting cylinder, a filter element, an assembly ring, and a connecting ring. The installation cylinder is located at the bottom end of the climbing pipe, and the top end of the installation cylinder is provided with an assembly ring. The bottom end of the installation cylinder is provided with an adjusting cylinder, and the adjusting cylinder is provided with a filter element for filtering. The bottom end of the adjusting cylinder is located at the connecting ring connected to the smoke exhaust device.

[0021] This invention provides a multi-stage ascending flue gas duct. Compared with the prior art, it has the following advantages:

[0022] 1. The positioning plate, which is inclined inside the support beam, can slide downward on the arc surface inside the positioning plate when the extended pipe and the top pipe are hoisted and lowered for assembly. This makes it easier to connect and assemble the extended pipe, the top pipe and the bottom pipe corresponding to the positioning plate. At the same time, when the extended pipe, the top pipe and the bottom pipe are assembled, the positioning plate will rotate inward and stick to the outside of the extended pipe and the top pipe for support and reinforcement, making the connection between the smoke exhaust pipe and the support tower more firm and stable.

[0023] 2. With the installation of assembly pipes and assembly plates, when climbing pipes, bottom pipes, extended pipes and top pipes are assembled, the assembly plate can be inserted into the assembly slots opened inside the assembly pipe for engagement, making the assembly of pipes more convenient and secure, reducing the occurrence of cracks at pipe connections. At the same time, the arc-shaped assembly pipe at the bottom end can also further assist in the positioning and assembly of the assembled pipes, improving the convenience of pipe assembly. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A schematic diagram of a multi-segment ascending flue gas duct structure according to the present invention is shown;

[0026] Figure 2 A schematic diagram of the overall side view of the present invention is shown;

[0027] Figure 3 A schematic diagram of the connection structure of the climbing pipe of the present invention is shown;

[0028] Figure 4 A schematic diagram of the separation structure of the assembly tube and the assembly plate of the present invention is shown;

[0029] Figure 5A schematic diagram of the connection structure between the assembly tube and the assembly plate of the present invention is shown;

[0030] Figure 6 A schematic diagram of the positioning state of the positioning plate of the present invention is shown;

[0031] Figure 7 A schematic diagram of the fixed state of the positioning plate of the present invention is shown;

[0032] Figure 8 A schematic diagram of the filtration device of the present invention is shown;

[0033] Figure 9 A schematic diagram of the sewage discharge assembly of the present invention is shown;

[0034] The diagram shows: 1. Support tower; 11. Support mounting frame; 2. Flue gas duct; 21. Bottom duct; 211. Assembly pipe; 212. Drain outlet; 22. Extension duct; 23. Top duct; 3. Climbing duct; 4. Assembly component; 41. Assembly pipe; 42. Assembly plate; 43. Sealing ring; 44. Assembly slot; 5. Positioning component; 51. Support beam; 52. Positioning plate; 53. Fixing ring; 6. Filter device; 61. Mounting cylinder; 62. Adjusting cylinder; 63. Filter element; 64. Assembly ring; 65. Connecting ring; 7. Drain assembly; 71. Drain tray; 72. Drain block; 73. Rotating rod; 8. Smoke exhaust device. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example 1

[0037] To address the technical problems in the background section, the following multi-stage climbing flue gas duct is proposed:

[0038] Combination Figures 1-5As shown, the present invention provides a multi-segment climbing flue gas duct, including a support tower 1, a support mounting frame 11 inside the support tower 1, a flue gas duct 2 inside the support mounting frame 11, a climbing pipe 3 on one side of the flue gas duct 2, the climbing pipe 3 communicating with the exhaust device 8 and the flue gas duct 2, and a positioning component 5 on the outside of the flue gas duct 2; the flue gas duct 2 includes a bottom pipe 21, an extended pipe 22, and a top pipe 23, the bottom pipe 21 has multiple extended pipes 22 at its top, and the extended pipes 22 have a top pipe 23 at their top ends; an assembly component 4 is provided at the connection points of the climbing pipe 3, the bottom pipe 21, the extended pipes 22, and the top pipe 23; the positioning component 5 is connected to the extended pipes 22... The top pipe 23 is correspondingly arranged, and the assembly component 4 is used to assist in the assembly of the pipes to connect with each other; the positioning component 5 includes a support beam 51 and a positioning plate 52. The support beam 51 is connected to the support tower 1. The positioning plate 52 is provided at one end of the support beam 51. The support beam 51 and the positioning plate 52 are provided in four sets on the outside of the extended pipe 22 and the top pipe 23. The support beam 51 and the positioning plate 52 are rotatably connected; the positioning component 5 also includes a fixing ring 53. The fixing ring 53 is provided on the outside of the positioning plate 52. The positioning plate 52 is arc-shaped. The arc of the inner side of the positioning plate 52 corresponds to the outer side of the extended pipe 22 and the top pipe 23; the arc-shaped positioning plate 52 makes it easy for the assembled pipes to slide downward on the inner side of the positioning plate 52;

[0039] The positioning plate 52 has two states: positioning and fixed. In the positioning state, the positioning plate 52 is inclined at the inner end of the support beam 51, the fixing ring 53 is separated from the positioning plate 52, and the corresponding extended pipe 22 or top pipe 23 is located above the positioning plate 52. In the fixed state, the positioning plate 52 is set at a right angle to the support beam 51, the inner side of the positioning plate 52 is in contact with the outer side of the extended pipe 22 and the top pipe 23, the corresponding extended pipe 22 and the top pipe 23 are connected to the bottom pipe, and the fixing ring 53 is located on the outer side of the top of the positioning plate 52.

[0040] The positioning plate 52, which is inclined inside the support beam 51, can slide downward on the arc surface inside the positioning plate 52 when the extended pipe 22 and the top pipe 23 are hoisted and lowered for assembly. This makes it easier to connect and assemble the extended pipe 22 and the top pipe 23 corresponding to the positioning plate 52 with the top of the bottom pipe. At the same time, when the extended pipe 22 and the top pipe 23 are assembled with the bottom pipe, the positioning plate 52 will rotate inward and stick to the outside of the extended pipe 22 and the top pipe 23 for support and reinforcement, making the connection between the smoke exhaust pipe and the support tower 1 more firm and stable.

[0041] The design of the fixing ring 53 can lock and fix the positioning plate 52 in a fixed state, thereby improving the support effect of the positioning plate 52 on the pipeline. The fixing ring 53 is composed of multiple welded parts, such as two half-rings welded together.

[0042] When assembling and erecting the smoke exhaust duct, the climbing pipe 3 is first connected to the smoke exhaust device 8. Then, the smoke exhaust duct is connected to the bottom pipe 21 through the assembly component 4. The extended pipe 22 and the top pipe 23 at the top of the bottom pipe 21 are hoisted and assembled in sequence. To facilitate the assembly between the pipes, the positioning plate 52 is in a positioning state. The falling extended pipe 22 and the top pipe 23 slide and are positioned inside the positioning plate 52. The assembled extended pipe 22 and the top pipe 23 will drive the positioning plate 52 to rotate. The rotating positioning plate 52 can then be attached to the outside of the extended pipe 22 and the top pipe 23 for support and reinforcement. In this way, the smoke exhaust duct can be more solid after it is erected. When the smoke exhaust is performed after the assembly is completed, the smoke exhaust device 8 first injects the smoke into the climbing pipe 3. The smoke entering the climbing pipe 3 will enter the smoke exhaust duct 2 and rise and be discharged.

[0043] In this embodiment, an assembly pipe 211 is provided on the side of the bottom pipe 21, and the assembly pipe 211 is disposed between the bottom pipe 21 and the bottom pipe 21. The assembly pipe 211 is connected to the climbing pipe 3. The assembly pipe 211 facilitates the connection between the climbing pipe 3 and the smoke exhaust pipe from one side.

[0044] Example 2

[0045] like Figure 1 and Figure 2 As shown, based on the above embodiments, this embodiment further provides the following:

[0046] To ensure the smoke exhaust duct can achieve the above functions and be used for a long time, the following issues need to be addressed: 1. Easier assembly and fixing of each pipe; 2. Stable and secure connections between pipes after assembly. Therefore, this embodiment provides the following design:

[0047] The assembly components 4 are provided in multiple locations, respectively located at multiple connection points of the climbing pipe 3, the bottom pipe 21, the extended pipe 22 and the top pipe 23. The connection method of the assembly components 4 between the climbing pipe 3, the bottom pipe 21, the extended pipe 22 and the top pipe 23 is the same.

[0048] In this embodiment, the assembly component 4 includes an assembly tube 41, an assembly plate 42, a sealing ring 43, and an assembly slot 44. The assembly tube 41 is located inside the end of the climbing pipe 3 and inside the top of the bottom pipe 21 and the extension pipe 22. The assembly plate 42 is located inside the end of the assembly tube 211 and inside the bottom of the extension pipe 22 and the top pipe 23. Four assembly plates 42 are arranged in a ring. The top of the assembly plate 42 is provided with a sealing ring 43. The assembly slot 44 is opened inside the assembly tube 41 and is engaged with the assembly plate 42. The design of the sealing ring 43 can improve the sealing performance of the connection between the pipes after assembly after the assembly plate 42 and the assembly tube 41 are engaged.

[0049] The bottom end of the assembly plate 42 is arc-shaped, and the shape of the assembly plate 42 corresponds to the assembly slot 44; when the assembly tube 41 is connected to the assembly plate 42, the top end of the assembly tube 41 abuts against the bottom surface of the sealing ring 43.

[0050] With the assembly tube 41 and assembly plate 42 in place, when the climbing pipe 3, bottom pipe 21, extension pipe 22 and top pipe 23 are assembled, the assembly plate 42 can be inserted into the assembly slot 44 opened inside the assembly tube 41 for engagement, making the assembly between pipes more secure and convenient. At the same time, the arc-shaped assembly tube 41 at the bottom end can also further assist in the positioning and assembly of the assembled pipes, improving the convenience of pipe assembly.

[0051] Example 3

[0052] like Figures 1-4 As shown, based on the above embodiments, this embodiment further provides the following:

[0053] To further extend the lifespan of the exhaust duct and reduce internal dirt buildup, this embodiment provides the following technical solution:

[0054] A filter device 6 for filtering impurities is provided between the climbing pipe 3 and the smoke exhaust device 8. The filter device 6 includes an installation cylinder 61, an adjusting cylinder 62, a filter element 63, an assembly ring 64, and a connecting ring 65. The installation cylinder 61 is located at the bottom end of the climbing pipe 3. The top end of the installation cylinder 61 is provided with an assembly ring 64. The bottom end of the installation cylinder 61 is provided with an adjusting cylinder 62. The adjusting cylinder 62 is provided with a filter element 63 for filtering. The bottom end of the adjusting cylinder 62 is located at the connecting ring 65 connected to the smoke exhaust device 8. Through the filter device 6, the exhaust gas can be filtered and impurities removed, reducing the accumulation of dirt inside the smoke exhaust pipe.

[0055] In this embodiment, the adjusting cylinder 62 is threadedly connected to the mounting cylinder 61, the assembly ring 64 engages with the climbing pipe 3, and the connecting ring 65 engages with the smoke exhaust device 8;

[0056] By adjusting the threaded connection between the adjusting cylinder 62 and the mounting cylinder 61, the filter device 6 can be fixed at the connection between the smoke exhaust device 8 and the climbing pipe 3 by adjusting the combined length of the mounting cylinder 61 and the adjusting cylinder 62 when installing the filter device 6, making the replacement and installation of the filter device 6 more convenient.

[0057] The bottom pipe 21 is provided with a sewage discharge assembly 7 at its bottom end. A sewage discharge port 212 is opened in the middle of the bottom end of the bottom pipe 21. The sewage discharge assembly 7 includes a sewage discharge plate 71, a sewage discharge block 72, and a rotating rod 73. The sewage discharge plate 71 is fixedly installed on the inner side of the bottom end of the bottom pipe 21. The top surface of the sewage discharge plate 71 is provided on the sewage discharge block 72. The bottom end of the sewage discharge block 72 is provided with a rotating rod 73 that penetrates the sewage discharge plate 71 and the sewage discharge port 212. A lower sewage trough is opened inside the sewage discharge plate 71.

[0058] In this embodiment, the drain block 72 is rotatably connected to the drain pan 71, the size of the drain block 72 is larger than the lower sludge trough, and the lower sludge trough is correspondingly provided with the drain block 72;

[0059] The drain block 72, which rotates on the top surface of the drain pan 71, can discharge the dirt that has settled inside the exhaust pipe through the lower sludge trough. During the exhaust process, the drain block 72 can block the top of the lower sludge trough to ensure the normal exhaust of the exhaust pipe.

[0060] Working principle and usage process of this invention:

[0061] During assembly:

[0062] First, fix the bottom pipe 21 of the exhaust pipe in the support mounting bracket 11 of the support tower 1. Then connect the climbing pipe 3 to the exhaust device 8. At this time, install the filter device 6 at the connection between the climbing pipe 3 and the exhaust device 8, so that the assembly ring 64 at the top of the mounting cylinder 61 is engaged with the bottom end of the climbing pipe 3. Then rotate the adjusting cylinder 62 so that the connecting ring 65 at the bottom end of the adjusting cylinder 62 is engaged with the installation pipe of the exhaust device 8. In this way, the flue gas discharged by the exhaust device 8 is filtered to reduce the particulate impurities inside the flue gas.

[0063] Then the climbing pipe 3 is connected to the assembly pipe 211 on one side of the bottom pipe 21, and the assembly plate 42 inside the assembly pipe 211 will be inserted into the assembly slot 44 inside the assembly pipe 41 inside the climbing pipe 3.

[0064] Next, the extended pipe 22 is hoisted onto the top of the bottom pipe 21. At this time, the positioning plate 52 is in a positioning state. The extended pipe 22 descends, and the bottom end of the extended pipe 22 contacts the inner arc surface of the positioning plate 52 and slides inward. The sliding extended pipe 22 will fall onto the top of the bottom pipe 21. At this time, the assembly plate 42 at the bottom end of the extended pipe 22 will be inserted into the assembly tube 41 at the top end of the bottom pipe 21 for assembly. At the same time, the extended pipe 22 is connected to the bottom pipe 21. The positioning plate 52 corresponding to the extended pipe 22 will be pushed inward by the descending extended pipe 22 and attached to the outside of the extended pipe 22. Multiple positioning plates 52 can support the extended pipe 22 from the side, which can improve the firmness of the installation of the extended pipe 22. Then, a fixing ring 53 can be installed on the outside of the positioning plate 52 to lock and fix the positioning plate 52. The assembly and fixing method between multiple extended pipes 22 and the top pipe 23 is the same as the above method.

[0065] When performing smoke extraction;

[0066] The smoke exhaust device 8 filters the smoke through the filter device 6 and then discharges it into the climbing pipe 3. The smoke in the climbing pipe 3 is sent to the smoke exhaust pipe, and the smoke in the smoke exhaust pipe will continuously surge upward until it is discharged from the top of the top pipe 23.

[0067] After prolonged use, sediment in the flue gas will inevitably settle and accumulate at the bottom of the bottom pipe 21. At this time, rotating the rotating rod 73 will cause the drain block 72 to rotate on the top surface of the drain pan 71. The rotating drain block 72 can push the sediment into the lower sludge trough and discharge it through the drain port 212. In this way, the accumulation of dirt at the bottom of the vertical section of the flue gas pipe can be reduced, which is conducive to the long-term use of the flue gas pipe.

[0068] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0069] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-segmented climbing flue gas duct, characterized by: The application relates to a smoke exhaust device, which comprises a support tower (1), a support mounting frame (11) arranged in the support tower (1), a smoke pipeline (2) arranged in the support mounting frame (11), a climbing pipeline (3) arranged on one side of the smoke pipeline (2), and a smoke exhaust device (8) in communication with the climbing pipeline (3) and the smoke pipeline (2). The smoke pipeline (2) comprises a bottom pipeline (21), lengthened pipelines (22) and a top pipeline (23), the top pipeline (21) is provided with a plurality of lengthened pipelines (22), the top end of each lengthened pipeline (22) is provided with a top pipeline (23), the connection positions of the climbing pipeline (3), the bottom pipeline (21), the lengthened pipelines (22) and the top pipeline (23) are provided with assembling components (4), and the lengthened pipelines (22) and the top pipeline (23) are provided with positioning components (5) correspondingly. The positioning plate (52) in the positioning component (5) has two positioning and fixing states: In the positioning state, the positioning plate (52) is arranged in an inclined mode at the inner end of the support beam (51), the fixing ring (53) is separated from the positioning plate (52), and the corresponding lengthened pipeline (22) or top pipeline (23) is located above the positioning plate (52). In the fixing state, the positioning plate (52) is arranged at a right angle with the support beam (51), the inner side of the positioning plate (52) is attached to the outer side of the lengthened pipeline (22) and the top pipeline (23), the corresponding lengthened pipeline (22) and top pipeline (23) are connected to the bottom pipeline, and the fixing ring (53) is arranged at the top outer side of the positioning plate (52). The positioning component (5) comprises the support beam (51) and the positioning plate (52), the support beam (51) is connected with the support tower (1), one end of the support beam (51) is provided with the positioning plate (52), four groups of the support beam (51) and the positioning plate (52) are arranged outside the lengthened pipelines (22) and the top pipeline (23), and the support beam (51) and the positioning plate (52) are rotationally connected. The positioning component (5) further comprises the fixing ring (53), the fixing ring (53) is arranged outside the positioning plate (52), the positioning plate (52) is in an arc shape, and the inner side of the positioning plate (52) is corresponded to the outer side of the lengthened pipeline (22) and the top pipeline (23). The assembling component (4) comprises an assembling pipe (41), an assembling plate (42), a sealing ring (43) and an assembling slot (44), the assembling pipe (41) is arranged inside the pipe end of the climbing pipeline (3), the top end of the lengthened pipeline (22) and the bottom end of the top pipeline (23), the assembling plate (42) is arranged inside the pipe end of the assembling pipe (211), the bottom end of the lengthened pipeline (22) and the top pipeline (23), the assembling plate (42) is annularly provided with four assembling plates (42), the top end of the assembling plate (42) is provided with the sealing ring (43), the assembling slot (44) is arranged in the assembling pipe (41), and the assembling slot (44) is clamped and connected with the assembling plate (42).

2. A multi-stage climbing flue gas duct according to claim 1, characterized in that: The bottom pipeline (21) is provided with an assembling pipe (211) on the side, and the assembling pipe (211) is connected with the bottom pipeline (21).

3. A multi-stage climbing flue gas duct according to claim 1, characterized in that: The assembling assembly (4) is provided with a plurality of assembling assemblies (4) respectively arranged at the connecting positions of the climbing pipeline (3), the bottom pipeline (21), the lengthening pipeline (22) and the top pipeline (23), and the connecting modes of the assembling assemblies (4) between the climbing pipeline (3), the bottom pipeline (21), the lengthening pipeline (22) and the top pipeline (23) are the same.

4. A multi-stage climbing flue gas duct according to claim 1, characterized in that: The climbing pipeline (3) and the smoke exhaust device (8) are provided with a filtering device (6) for filtering impurities, and the filtering device (6) comprises a mounting cylinder (61), an adjusting cylinder (62), a filter core (63), an assembling ring (64) and a connecting ring (65).

5. A multi-stage climbing flue gas duct according to claim 4, characterized in that: The adjusting cylinder (62) is threadedly connected with the mounting cylinder (61), the assembling ring (64) is clamped with the climbing pipeline (3), and the connecting ring (65) is clamped with the smoke exhaust device (8).

6. A multi-stage climbing flue gas duct according to claim 5, characterized in that: The bottom pipeline (21) is provided with a pollution discharge assembly (7) at the bottom end, and a pollution discharge opening (212) is formed in the middle of the bottom end of the bottom pipeline (21), and the pollution discharge assembly (7) comprises a pollution discharge disc (71), a pollution discharge block (72) and a rotating rod (73), the pollution discharge disc (71) is fixedly installed on the inner side of the bottom end of the bottom pipeline (21), the top surface of the pollution discharge disc (71) is provided with the pollution discharge block (72), the bottom end of the pollution discharge block (72) is provided with the rotating rod (73) penetrating through the pollution discharge disc (71) and the pollution discharge opening (212), and a pollution discharge groove is formed in the inside of the pollution discharge disc (71).

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