Submerged arc furnace flue gas heat pipe heat exchanger ash removal device and submerged arc furnace flue gas heat pipe heat exchanger

Abstract

An ash removal device for a submerged arc furnace smoke heat pipe heat exchanger comprises a power mechanism and an accumulated ash scraping and sweeping mechanism. The accumulated dust scraping and sweeping mechanism comprises a plurality of scraping and sweeping assemblies arranged side by side and a power conversion assembly. The scraping and sweeping assembly comprises a fixing frame, a first scraping and sweeping part, a second scraping and sweeping part and a rotating shaft; the rotating shafts are rotationally installed at equal intervals in the length direction of the fixing frame, the adjacent rotating shafts are in transmission through chain wheels and chains, the first scraping and sweeping part and the second scraping and sweeping part are sequentially installed on the rotating shafts in a staggered mode, and the power conversion assembly comprises a first power conversion part and a second power conversion part; the first power conversion part is rotationally mounted in the right end of each fixing frame, and the second power conversion part is rotationally mounted on the right end surface of the fixing frame; the power mechanism comprises a guide rack and a driving part; the guide rack is meshed with the second power conversion part, and the driving part can drive the scraping and sweeping assembly to reciprocate in the axial direction of the heat exchange tube, so that the first power conversion part and the second power conversion part convert power into power for synchronous rotation of the first scraping and sweeping part and the second scraping and sweeping part.

Description

Technical Field

[0001] This invention relates to the field of submerged arc furnace technology, and in particular to a ash removal device for a submerged arc furnace flue gas heat pipe heat exchanger and a submerged arc furnace flue gas heat pipe heat exchanger. Background Technology

[0002] In industrial production processes, various heat conversion equipment, energy-consuming equipment, and chemical reaction equipment generate a large amount of waste heat. If this waste heat is not effectively utilized, it will lead to energy waste. Especially in high-temperature equipment such as electric arc furnaces, the fine dust contained in the flue gas can severely affect heat exchange efficiency, resulting in poor waste heat recovery and utilization. For flue gas heat pipe heat exchangers, dust easily accumulates on the surface of the heat exchange tubes during long-term use. This not only reduces heat exchange efficiency but may also obstruct flue gas flow. To ensure flue gas flow and improve heat exchange efficiency, common cleaning methods include mechanical vibration cleaning, mechanical brush cleaning, high-pressure steam cleaning, and explosive cleaning. However, these methods often fail to completely remove the accumulated dust and cannot effectively solve the problems of low flue gas flow and low heat exchange efficiency. Summary of the Invention

[0003] In order to solve the technical problems existing in the above-mentioned technologies, it is necessary to provide a dust removal device for a submerged arc furnace flue gas heat pipe heat exchanger.

[0004] A dust removal device for a submerged arc furnace flue gas heat pipe heat exchanger includes a power mechanism and a dust scraping mechanism.

[0005] The ash-scraping mechanism includes a scraping assembly and a power conversion assembly. There are at least two scraping assemblies, each arranged side-by-side. Each scraping assembly includes a fixed frame, a first scraping section, a second scraping section, and a rotating shaft. The rotating shaft is longitudinally mounted on the fixed frame at equal intervals along its length. A sprocket assembly is fixedly mounted on each rotating shaft, and adjacent sprocket assemblies are connected by a chain drive. The first and second scraping sections are sequentially and alternately mounted on the rotating shaft at equal intervals. The first and second scraping sections on adjacent fixed frames scrape the heat exchange tubes that need ash removal. The power conversion assembly, which is clamped by the outer wall, includes a first power conversion part and a second power conversion part. The first power conversion part is rotatably installed in the right end of each fixed frame. The first power conversion part is connected to the sprocket group located at the rightmost end of each fixed frame. The second power conversion part is rotatably installed on the right end face of the fixed frame. The second power conversion part can drive each first power conversion part to rotate synchronously. The first power conversion part drives the first scraping part and the second scraping part to rotate synchronously in the axial direction of the heat exchange tube, so that the scraping part can scrape and clean the outer wall of the heat exchange tube.

[0006] The power mechanism includes a guide rack and a drive unit. The guide rack is fixedly installed on the inner side wall of the heat pipe heat exchanger along the axial direction of the heat exchange tube. The guide rack meshes with the second power conversion unit. The drive unit can drive the scraping assembly to reciprocate along the axial direction of the heat exchange tube. When the second power conversion unit moves along the guide rack, it converts the longitudinal movement of the scraping assembly into the power for the synchronous rotation of the first scraping unit and the second scraping unit.

[0007] Preferably, the first scraping part includes a first scraper and a first cleaner; the first scraper is fixedly mounted on the rotating shaft, the first cleaner is fixedly mounted on the rotating shaft and located below the first scraper, the diameter of the first cleaner is smaller than the diameter of the first scraper, and there is a gap between the first cleaner and the first scraper.

[0008] Preferably, the second scraping part includes a second scraper and a second cleaner; the second scraper is fixedly mounted on the rotating shaft, and the second cleaner is fixedly mounted on the rotating shaft and located above the second scraper. The diameter of the second cleaner is smaller than the diameter of the second scraper, and a gap is left between the second cleaner and the second scraper.

[0009] Preferably, the first and second scraping parts located on the odd-numbered columns of the fixing frame are installed in the opposite manner to the first and second scraping parts located on the even-numbered columns of the fixing frame.

[0010] Preferably, the first and second scraping parts are installed symmetrically up and down along the fixed frame with the sprocket assembly on the rotating shaft as the line of symmetry.

[0011] Preferably, the top two sides and bottom two sides of the fixing frame are symmetrically provided with arc-shaped grooves.

[0012] Preferably, the minimum distance between the outer walls of the first and second scrapers, which are arranged diagonally on adjacent fixed frames, is 0.8 times the outer diameter of the heat exchange tube; the minimum distance between the outer walls of the first and second cleaners, which are arranged diagonally on adjacent fixed frames, is 0.9 times the outer diameter of the heat exchange tube.

[0013] Preferably, the first power conversion unit includes a first power rod, a first gear, and a second gear; the first power rod is rotatably mounted on the fixed frame, and the first power rod and the sprocket group located at the rightmost end of the fixed frame are driven by a sprocket and chain; the first gear and the second gear are rotatably mounted in sequence along the longitudinal direction of the fixed frame, and the first gear and the second gear are driven by a sprocket and chain; the second gear meshes with the second power conversion unit.

[0014] Preferably, the second power conversion unit includes a second power rod and a traveling gear; the second power rod is rotatably mounted on the right end face of the fixed frame, the second power rod meshes with the second gear, the traveling gear is fixedly mounted on both ends of the second power rod, and the traveling gear meshes with the guide rack.

[0015] There is also a need to improve a type of heat pipe heat exchanger for flue gas from a submerged arc furnace.

[0016] A submerged arc furnace flue gas heat pipe heat exchanger includes the aforementioned submerged arc furnace flue gas heat pipe heat exchanger cleaning device, which is installed inside the submerged arc furnace flue gas heat pipe heat exchanger and is used to clean the ash accumulated on the outer wall of the heat exchange tubes inside the submerged arc furnace flue gas heat pipe heat exchanger.

[0017] Compared with existing technologies, the dust removal device for a submerged arc furnace flue gas heat pipe heat exchanger provided by this invention uses a drive unit to drive a scraping assembly to reciprocate along the axial direction of the heat exchange tube. When the second power conversion unit moves along the guide rack, it converts the longitudinal movement of the scraping assembly into the power for the synchronous rotation of the first and second scraping parts. The first and second scraping parts on adjacent fixed frames are evenly distributed at 90 degrees on the outer wall of the heat exchange tube, thus covering the outer wall. Relying on the four evenly distributed first and second scraping parts moving axially along the outer wall of the heat exchange tube while simultaneously rotating synchronously circumferentially, the continuous reciprocating friction created by the first and second scraping parts on the outer wall of the heat exchange tube achieves the cleaning of accumulated dust. This invention achieves the cleaning of surface-adhesive dust accumulation on the heat exchange tubes inside the heat pipe heat exchanger, avoiding the tedious operation of traditional manual cleaning, improving dust removal efficiency, reducing labor costs, ensuring flue gas circulation, and improving the heat exchange efficiency of the heat pipe heat exchanger. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments 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.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention.

[0020] Figure 2 For the present invention Figure 1 A top-view structural diagram.

[0021] Figure 3 For the present invention Figure 1 A schematic diagram of the axonal structure.

[0022] Figure 4This is a schematic diagram of the structure of the scraping component of the present invention.

[0023] Figure 5 For the present invention Figure 4 A structural diagram from another angle.

[0024] Figure 6 This is a schematic diagram of the structure of the two scraping components of the present invention arranged side by side.

[0025] Figure 7 For the present invention Figure 6 A structural diagram from another angle.

[0026] Figure 8 This is a schematic diagram of the structure of the flue gas heat pipe heat exchanger of the electric arc furnace of the present invention.

[0027] In the figure: Scraping assembly 01, fixing frame 11, arc groove 111, first scraping part 12, first scraper 121, first cleaner 122, second scraping part 13, second scraper 131, second cleaner 132, rotating shaft 14, sprocket assembly 15, power conversion assembly 02, first power conversion part 21, first power rod 211, first gear 212, second gear 213, second power conversion part 22, second power rod 221, traveling gear 222, guide rack 03, traveling wheel 04, heat exchange tube 05, control cabinet 06, drive part 07, heat pipe heat exchanger 08. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and 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.

[0029] In the description of this invention, it should be understood that the terms "upper", "middle", "outer", "inner", "lower", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0030] Please refer to Figures 1 to 7 In one embodiment, the present invention provides a dust removal device for a submerged arc furnace flue gas heat pipe heat exchanger, including a power mechanism and a dust scraping mechanism;

[0031] The ash-scraping mechanism includes a scraping assembly 01 and a power conversion assembly 02. There are at least two scraping assemblies 01, each arranged side-by-side. Each scraping assembly 01 includes a fixed frame 11, a first scraping part 12, a second scraping part 13, and a rotating shaft 14. The rotating shaft 14 is mounted longitudinally on the fixed frame 11 at equal intervals along its length. A sprocket set 15 is fixedly mounted on each rotating shaft 14, and adjacent sprocket sets 15 are connected by a chain drive. The first scraping part 12 and the second scraping part 13 are installed alternately and at equal intervals on the rotating shaft 14. The first scraping part 12 and the second scraping part 13 on adjacent fixed frames 11 clamp the outer wall of the heat exchange tube that needs cleaning. At this time, the first scraping part 12 and the second scraping part 13 on adjacent fixed frames 11 are cleaning the heat exchange tube. The outer wall of the heat pipe is uniformly distributed at 90 degrees (i.e., two first scraping parts 12 and two second scraping parts 13 are evenly distributed along the outer wall of the heat exchange tube), thereby covering the outer wall of the heat exchange tube; the power conversion assembly 02 includes a first power conversion part 21 and a second power conversion part 22; the first power conversion part 21 is rotatably installed in the right end of each fixed frame 11, and the first power conversion part 21 is connected to the sprocket group 15 located at the rightmost end of each fixed frame 11; the second power conversion part 22 is rotatably installed on the right end face of the fixed frame 11, and the second power conversion part 22 can drive each first power conversion part 21 to rotate synchronously, and the first power conversion part 21 drives the first scraping part 12 and the second scraping part 13 to rotate synchronously in the axial direction of the heat exchange tube, so that the scraping part can scrape and clean the outer wall of the heat exchange tube;

[0032] The power mechanism includes a guide rack 03 and a drive unit. The guide rack 03 is fixedly installed on the inner side wall of the heat pipe heat exchanger along the axial direction of the heat exchange tube. The guide rack 03 meshes with the second power conversion unit 22. The drive unit can drive the scraping assembly 01 to reciprocate along the axial direction of the heat exchange tube. When the second power conversion unit 22 moves along the guide rack 03, it converts the longitudinal movement of the scraping assembly 01 into the power for the synchronous rotation of the first scraping part 12 and the second scraping part 13.

[0033] In this technical solution, when it is necessary to clean the dust accumulation on the outer wall of the heat exchange tube, the drive unit will drive the entire scraping assembly 01 to move back and forth along the axial direction of the heat exchange tube. During the movement, the second power conversion unit 22 will convert the power of the longitudinal movement of the scraping assembly 01 into the power of the synchronous rotation of the first scraping part 12 and the second scraping part 13 through the first power conversion unit 21. At this time, the two first scraping parts 12 and the two second scraping parts 13, which are evenly distributed and covered on the outer wall of the heat exchange tube, can move along the axial direction of the outer wall of the heat exchange tube, and can also rotate synchronously on their own. The first scraping parts 12 and the second scraping parts 13 form continuous and reciprocating friction on the outer wall of the heat exchange tube to achieve the cleaning of the dust accumulation on the outer wall of the heat exchange tube.

[0034] In one embodiment, the first scraping section 12 includes a first scraper 121 and a first cleaner 122. The first scraper 121 is fixedly mounted on a rotating shaft 14, and the first cleaner 122 is fixedly mounted on the rotating shaft 14 and located below the first scraper 121. The diameter of the first cleaner 122 is smaller than the diameter of the first scraper 121, and a gap is left between the first cleaner 122 and the first scraper 121. The outer walls of the first scraper 121 and the first cleaner 122 are in contact with the outer wall of the heat exchange tube.

[0035] Correspondingly, the second scraping section 13 includes a second scraper 131 and a second cleaner 132. The second scraper 131 is fixedly mounted on the rotating shaft 14, and the second cleaner 132 is fixedly mounted on the rotating shaft 14 and located above the second scraper 131. The diameter of the second cleaner 132 is smaller than the diameter of the second scraper 131, and a gap is left between the second cleaner 132 and the second scraper 131. The outer walls of the second scraper 131 and the second cleaner 132 are in contact with the outer wall of the heat exchange tube. Cylindrical or annular stainless steel wire balls are installed on the outer surfaces of the first scraper 121 and the second scraper 131. During installation, the first scraper 121 and the second scraper 131 are pressed against the outer wall of the heat exchange tube, ensuring good rotational ability even with a large coverage area, thereby improving the dust removal effect. Stainless steel wire balls, made by winding 304 stainless steel wires of less than 0.5 mm, have certain high temperature resistance and are used to clean the surface of heat exchange tubes without damaging the surface of the heat tubes.

[0036] In this technical solution, when the first scraping part 12 and the second scraping part 13 on the adjacent fixing frame 11 clamp the heat exchange tube, the first scraper 121 and the second scraper 131, as well as the first cleaner 122 and the second cleaner 132, are evenly distributed at 90° on the outer wall of the heat exchange tube. The first scraper 121 and the second scraper 131 are installed in a staggered manner, one above the other, at the diagonal position of the outer wall of the heat exchange tube. Similarly, the first cleaner 122 and the second cleaner 132 are also installed in a staggered manner, one above the other, at the diagonal position of the outer wall of the heat exchange tube. This arrangement can prevent the larger diameter first scraper 121 and the second scraper 131 from causing rotational interference, and can also ensure a better coverage area of ​​the first scraping part 12 and the second scraping part 13 on the outer wall of the heat exchange tube, so as to achieve a better cleaning effect. As for the first cleaner 122 and the second cleaner 132, after the first scraper 121 and the second scraper 131 clean the outer wall of the heat exchange tube, they can then sweep the outer wall of the heat exchange tube to ensure that the accumulated dust or the dust after scraping is removed. When the first cleaner 122 and the second cleaner 132 rotate, they can also form a certain blowing on the airflow around the outer wall of the heat exchange tube, promote the airflow, and accelerate the removal of the accumulated dust from the inlet end to the outlet end of the heat pipe heat exchanger.

[0037] In one embodiment, the first scraping part 12 and the second scraping part 13 on the odd-numbered column of the fixing frame 11 are installed in the opposite manner to the first scraping part 12 and the second scraping part 13 on the even-numbered column of the fixing frame 11.

[0038] Correspondingly, the first scraping part 12 and the second scraping part 13 are installed symmetrically up and down along the fixed frame 11 with the sprocket assembly 15 on the rotating shaft 14 as the line of symmetry.

[0039] In this technical solution, the arrangement can prevent the large-diameter first scraper 121 and second scraper 131 from interfering with each other during rotation, and can also increase the contact area between the first scraper 12 and the second scraper 13 and the outer wall of the heat exchange tube, thereby improving the dust removal effect.

[0040] In one embodiment, the top two sides and bottom two sides of the fixing frame 11 are symmetrically provided with arc-shaped grooves 111.

[0041] In one embodiment, the minimum distance between the outer walls of the first scraper 121 and the second scraper 131, which are arranged diagonally on adjacent mounting brackets 11, is 0.8 times the outer diameter of the heat exchange tube; the minimum distance between the outer walls of the first cleaner 122 and the second cleaner 132, which are arranged diagonally on adjacent mounting brackets 11, is 0.9 times the outer diameter of the heat exchange tube.

[0042] In one embodiment, the first power conversion unit 21 includes a first power rod 211, a first gear 212, and a second gear 213. The first power rod 211 is rotatably mounted on the fixed frame 11. The first power rod 211 and the sprocket group 15 located at the rightmost end of the fixed frame 11 are driven by a sprocket and chain. The first gear 212 and the second gear 213 are rotatably mounted in sequence along the longitudinal direction of the fixed frame 11. The first gear 212 and the second gear 213 are driven by a sprocket and chain. The second gear 213 meshes with the second power conversion unit 22.

[0043] In one embodiment, the second power conversion unit 22 includes a second power rod 221 and a traveling gear 222; the second power rod 221 is rotatably mounted on the right end face of the fixed frame 11, the second power rod 221 meshes with the second gear 213, the traveling gear 222 is fixedly mounted on both ends of the second power rod 221, and the traveling gear 222 meshes with the guide rack 03.

[0044] For the drive unit, the scraping assembly 01 can be moved longitudinally and reciprocally along the heat pipe heat exchanger using a lead screw, or a winch can be used to achieve the same action. The drive unit can be controlled by connecting to a control cabinet via a signal transmission cable. When the control cabinet sends a running signal according to a set time, the small winch rotates in the set direction, driving the wire rope in that direction. After the set time, the reverse operation program starts, and the winch moves in the opposite direction, driving the wire rope in the set direction. This reciprocating operation cleans away the adhesive dust adhering to the surface of the heat exchange tubes.

[0045] To better ensure that the scraping assembly 01 can move stably back and forth along the heat pipe heat exchanger, a traveling wheel 04 is rotatably installed on the left end of the fixed frame 11. The traveling wheel 04 can directly form rolling contact with the inner wall of the heat pipe heat exchanger, or a guide rail that can guide the traveling wheel 04 can be installed on the inner wall of the heat pipe heat exchanger. Of course, to ensure that the traveling wheel 04 and the traveling gear 222 can be synchronized, the traveling wheel 04 can also adopt the same transmission method as the traveling gear 222.

[0046] Please refer to Figure 8 In one embodiment, a submerged arc furnace flue gas heat pipe heat exchanger includes a dust removal device for the submerged arc furnace flue gas heat pipe heat exchanger. The dust removal device is installed inside the submerged arc furnace flue gas heat pipe heat exchanger and is used to clean the dust accumulated on the outer wall of the heat exchange tube inside the submerged arc furnace flue gas heat pipe heat exchanger.

[0047] The above-disclosed embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the invention. Those skilled in the art will understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. A ash removal device for a submerged arc furnace flue gas heat pipe heat exchanger, characterized in that: Including the power mechanism and the dust scraping mechanism; The ash-scraping mechanism includes a scraping assembly and a power conversion assembly. There are at least two scraping assemblies, each arranged side-by-side. Each scraping assembly includes a fixed frame, a first scraping section, a second scraping section, and a rotating shaft. The rotating shaft is longitudinally mounted on the fixed frame at equal intervals along its length. A sprocket assembly is fixedly mounted on each rotating shaft, and adjacent sprocket assemblies are connected by a chain drive. The first and second scraping sections are sequentially and alternately mounted on the rotating shaft at equal intervals. The first and second scraping sections on adjacent fixed frames scrape the heat exchange tubes that need ash removal. The power conversion assembly, which is clamped by the outer wall, includes a first power conversion part and a second power conversion part. The first power conversion part is rotatably installed in the right end of each fixed frame. The first power conversion part is connected to the sprocket group located at the rightmost end of each fixed frame. The second power conversion part is rotatably installed on the right end face of the fixed frame. The second power conversion part can drive each first power conversion part to rotate synchronously. The first power conversion part drives the first scraping part and the second scraping part to rotate synchronously in the axial direction of the heat exchange tube, so that the scraping part can scrape and clean the outer wall of the heat exchange tube. The power mechanism includes a guide rack and a drive unit. The guide rack is fixedly installed on the inner side wall of the heat pipe heat exchanger along the axial direction of the heat exchange tube. The guide rack meshes with the second power conversion unit. The drive unit can drive the scraping assembly to reciprocate along the axial direction of the heat exchange tube. When the second power conversion unit moves along the guide rack, it converts the longitudinal movement of the scraping assembly into the power for the synchronous rotation of the first scraping unit and the second scraping unit.

2. The ash removal device for the flue gas heat pipe heat exchanger of the submerged arc furnace according to claim 1, characterized in that: The first scraping part includes a first scraper and a first cleaner; the first scraper is fixedly mounted on a rotating shaft, and the first cleaner is fixedly mounted on the rotating shaft and located below the first scraper. The diameter of the first cleaner is smaller than the diameter of the first scraper, and there is a gap between the first cleaner and the first scraper.

3. The ash removal device for the flue gas heat pipe heat exchanger of the submerged arc furnace according to claim 2, characterized in that: The second scraping part includes a second scraper and a second cleaner; the second scraper is fixedly mounted on the rotating shaft, and the second cleaner is fixedly mounted on the rotating shaft and located above the second scraper. The diameter of the second cleaner is smaller than the diameter of the second scraper, and there is a gap between the second cleaner and the second scraper.

4. The ash removal device for the flue gas heat pipe heat exchanger of the submerged arc furnace according to claim 3, characterized in that: The first and second scraping parts located on the odd-numbered columns of the mounting frame are installed in the opposite manner to the first and second scraping parts located on the even-numbered columns of the mounting frame.

5. The ash removal device for the flue gas heat pipe heat exchanger of a submerged arc furnace according to claim 4, characterized in that: The first and second scraping parts are installed symmetrically up and down along the fixed frame with the sprocket group on the rotating shaft as the line of symmetry.

6. The ash removal device for the flue gas heat pipe heat exchanger of the submerged arc furnace according to claim 5, characterized in that: The fixing frame has symmetrical arc-shaped grooves on both sides of the top and bottom.

7. The ash removal device for the flue gas heat pipe heat exchanger of a submerged arc furnace according to claim 6, characterized in that: The minimum distance between the outer walls of the first and second scrapers, which are arranged diagonally on adjacent fixed frames, is 0.8 times the outer diameter of the heat exchange tube; the minimum distance between the outer walls of the first and second cleaners, which are arranged diagonally on adjacent fixed frames, is 0.9 times the outer diameter of the heat exchange tube.

8. The ash removal device for the flue gas heat pipe heat exchanger of the submerged arc furnace according to claim 1, characterized in that: The first power conversion unit includes a first power rod, a first gear, and a second gear. The first power rod is rotatably mounted on a fixed frame. The first power rod and the sprocket group located at the rightmost end of the fixed frame are driven by a sprocket and chain. The first gear and the second gear are rotatably mounted in sequence along the longitudinal direction of the fixed frame. The first gear and the second gear are driven by a sprocket and chain. The second gear meshes with the second power conversion unit.

9. The ash removal device for the flue gas heat pipe heat exchanger of a submerged arc furnace according to claim 8, characterized in that: The second power conversion unit includes a second power rod and a traveling gear; the second power rod is rotatably mounted on the right end face of the fixed frame, the second power rod meshes with the second gear, the traveling gear is fixedly mounted on both ends of the second power rod, and the traveling gear meshes with the guide rack.

10. A heat pipe heat exchanger for flue gas from a submerged arc furnace, characterized in that: The invention includes the ash removal device for the flue gas heat pipe heat exchanger of a submerged arc furnace as described in any one of claims 1-9. The ash removal device is installed inside the flue gas heat pipe heat exchanger of the submerged arc furnace and is used to clean the ash accumulated on the outer wall of the heat exchange tube inside the flue gas heat pipe heat exchanger of the submerged arc furnace.

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