High-temperature-resistant and anti-corrosion boiler stainless steel chimney

Abstract

The utility model discloses a boiler stainless steel chimney that resists high temperature and corrosion relates to boiler chimney technical field, including pipeline and scraper blade, the top of pipeline is provided with chimney body, the top of chimney body is fixed with arc-shaped cover through support welding, the top of arc-shaped cover is fixed with connecting box through welding. By starting a double-shaft motor, the double-shaft motor can drive two sets of reciprocating motion mechanisms to start to move, so that a connecting frame is driven to move on the outer side of a fixing shaft, and the connecting frame can drive a connecting ring on the outer side and a plurality of sets of scraping plates to make contact with the inner wall of a chimney body to clean the chimney body, and two sets of positioning blocks on one side of a pipeline are in butt joint with a fixing block b; during butt joint, the clamping block moves and extrudes a spring b on one side, when the clamping block makes contact with a clamping groove in a fixing block b, the spring b pushes the clamping block to move to be clamped with the fixing block b, and therefore connection of the pipeline and the chimney body is completed.

Description

Technical Field

[0001] This utility model relates to the field of boiler chimney technology, specifically a high-temperature resistant and corrosion-resistant stainless steel boiler chimney. Background Technology

[0002] Boilers produce smoke during operation, and chimneys are often used to discharge this smoke. Chimneys allow the smoke to be released at high altitudes, so they are typically designed after boiler installation for this purpose. Stainless steel chimneys offer excellent corrosion resistance, resisting the erosion of acidic substances and moisture in the smoke, extending their lifespan and reducing maintenance and replacement costs.

[0003] For example, CN216844726U describes a stainless steel chimney for boiler exhaust. By rotating a shaft, the shaft drives an arc-shaped pusher to rotate and disengage from a pusher block and a slider near the pusher block. At this time, the spring in the middle of the two guide rods is no longer squeezed by the two sliders and will extend. During the extension process, it will push the two sliders away from each other, thereby making the two sliders no longer squeeze the chimney. This design allows for quick installation and disassembly of the chimney, effectively facilitating the disassembly and cleaning of the chimney by the user. For example, CN214009247U describes a double-layer stainless steel chimney for boiler exhaust. In use, the second and first fixing columns are fixed to the outer wall of the first chimney's outer cavity. Gas discharged from the boiler enters the inner cavity of the chimney from the bottom of the flue gas inlet. When there is excessive gas, the inner cavity of the chimney moves outward under the influence of the gas. A spring is installed to coordinate with this movement. When the inner cavity moves, it drives the second connecting rod to move towards the first connecting rod, allowing the second fixing bolt to be removed. The second chimney outer cavity is then fitted onto the top of the first chimney outer cavity. At this point, the locking block engages with the groove, and the second fixing bolt is installed into the corresponding hole, thus completing the fixing of the second and first chimney outer cavities.

[0004] The above-mentioned method requires disassembling the stainless steel chimney and then cleaning its interior with a cleaning brush or other cleaning tools. This cleaning method is quite cumbersome, requiring workers to climb to a high place to disassemble the stainless steel chimney. Existing stainless steel chimneys are cleaned by using a motor to drive the internal cleaning brush to rotate, thereby cleaning the inner wall of the chimney. However, the cleaning brush simply rotates during cleaning, which is a relatively simple cleaning method and is difficult to clean the inner wall of the chimney efficiently. Utility Model Content

[0005] The purpose of this invention is to provide a high-temperature resistant and corrosion-resistant stainless steel boiler chimney to solve the problem of the difficulty in cleaning existing stainless steel chimneys mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-temperature resistant and corrosion-resistant stainless steel boiler chimney, comprising a pipe and scrapers. A chimney body is provided at the top of the pipe, and an arc-shaped cover is welded and fixed to the top of the chimney body via a bracket. A connecting box is welded and fixed to the top of the arc-shaped cover. A fixed shaft is welded and fixed inside the chimney body, and a connecting frame is connected through the outside of the fixed shaft. A connecting ring is welded and fixed to the outside of the connecting frame. Multiple sets of scrapers are fixed to the outside of the connecting ring, and the multiple sets of scrapers are distributed at equal angles about the central axis of the connecting ring. The scrapers are inclined outside the connecting ring. A guiding mechanism is provided outside the fixed shaft. A reciprocating motion mechanism is provided inside the connecting box. A striking mechanism is provided at the top of the arc-shaped cover. A fixed block a is fixedly connected to the outside of one end of the pipe, and a limit mechanism is provided at the top of the fixed block a.

[0007] Furthermore, the guiding mechanism includes a spiral groove opened on the outer side of the fixed shaft, and a protrusion is slidably connected to the inner side of the spiral groove, with one side of the protrusion fixed to the connecting frame.

[0008] Furthermore, the reciprocating motion mechanism includes a dual-axis motor fixedly installed at the bottom of the arc-shaped cover. Both ends of the dual-axis motor are fixed with levers. One end of the lever is rotatably connected to a cylindrical block via a rotating shaft. A horizontal plate is slidably connected to the outer side of the cylindrical block. A vertical rod is fixedly connected to the bottom of the horizontal plate. A limit ring a is welded and fixed to the bottom of the vertical rod. The outer side of the limit ring a is rotatably connected to a connecting frame. The outer side of the vertical rod is slidably connected to the arc-shaped cover. A roller is rotatably connected to the end of the lever near the cylindrical block via a rotating shaft.

[0009] Furthermore, the striking mechanism includes a rotating rod rotatably connected to both sides of the top of the arc-shaped cover via a rotating shaft. One end of the rotating rod is fixedly connected to a striking block, which is made of rubber. The other end of the rotating rod abuts against a spring a, and one end of the spring a is fixed to the arc-shaped cover.

[0010] Furthermore, the limiting mechanism includes a positioning block welded and fixed to the top of the fixing block a, a fixing block b that is connected through the outer side of the positioning block, one side of the fixing block b being fixed to the chimney body, a spring b abutting inside the positioning block, a locking block abutting one end of the spring b, one side of the locking block engaging with the fixing block b, and a toggle mechanism provided on the top of the positioning block, the toggle mechanism including a limiting ring b rotatably connected to the top of the positioning block.

[0011] Furthermore, a rotating cover is fixedly connected to the top of the limiting ring b. An elliptical groove and an arc-shaped groove are opened inside the rotating cover. A connecting rod abuts against the inner side of the elliptical groove. One end of the connecting rod is fixedly connected to the locking block.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: by starting the dual-axis motor, the dual-axis motor will drive two sets of reciprocating motion mechanisms to start moving, thereby driving the connecting frame to move outside the fixed shaft. The connecting frame will drive the outer connecting ring and multiple sets of scrapers to contact the inner wall of the chimney body for cleaning. By docking the two sets of positioning blocks on one side of the pipe with the fixed block b, the locking block will move during docking and squeeze the spring b on one side. When the locking block contacts the locking groove inside the fixed block b, the spring b will push the locking block to move and engage with the fixed block b, thereby completing the connection between the pipe and the chimney body.

[0013] 1. This high-temperature resistant and corrosion-resistant stainless steel boiler chimney is made of 309S stainless steel, which is an austenitic chromium-nickel stainless steel. It has excellent high-temperature acid resistance and high-temperature strength. When cleaning the inside of the chimney, the dual-shaft motor is started, which drives two sets of reciprocating motion mechanisms to move. This pushes the connecting frame to move outside the fixed shaft. The protrusions on the inner side of the connecting frame are guided by the spiral groove after contacting it, causing the connecting frame to rotate outside the fixed shaft. The connecting frame drives the outer connecting ring and multiple sets of scrapers to contact the inner wall of the chimney. These multiple sets of inclined scrapers can move up and down while reciprocating, thus making contact with the inner wall of the chimney in multiple directions and in multiple forms, scraping away the debris adhering to the inner wall of the chimney. This operation facilitates the cleaning of the stainless steel boiler chimney.

[0014] 2. This high-temperature resistant and corrosion-resistant stainless steel boiler chimney, when connecting the pipe and the chimney body, involves aligning two sets of positioning blocks on one side of the pipe with a fixed block b. When the inclined surface of the locking block inside the positioning block contacts the fixed block b, the locking block moves and presses against a spring b on one side. When the locking block contacts the locking groove inside the fixed block b, the spring b pushes the locking block to move and engage with the fixed block b, thus completing the connection between the pipe and the chimney body. This operation facilitates the connection between the pipe and the chimney body. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0016] Figure 2 This is a three-dimensional cross-sectional structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the connecting box structure of this utility model;

[0018] Figure 4 This utility model Figure 2 Enlarged view of point A;

[0019] Figure 5This utility model Figure 3 Enlarged view of point B;

[0020] Figure 6 This is a schematic diagram of the three-dimensional cross-sectional structure of the fixing block b of this utility model;

[0021] Figure 7 This is a three-dimensional structural diagram of the rotating cover of this utility model.

[0022] In the diagram: 1. Pipe; 2. Chimney body; 3. Arc-shaped cover; 4. Connecting box; 5. Fixed shaft; 6. Connecting frame; 7. Connecting ring; 8. Scraper; 9. Protrusion; 10. Spiral groove; 11. Dual-axis motor; 12. Lever; 13. Cylindrical block; 14. Horizontal plate; 15. Vertical rod; 16. Limiting ring a; 17. Rotating rod; 18. Striking block; 19. Spring a; 20. Roller; 21. Fixed block a; 22. Positioning block; 23. Fixed block b; 24. Spring b; 25. Locking block; 26. Limiting ring b; 27. Rotating cover; 28. Elliptical groove; 29. ​​Arc-shaped groove; 30. Connecting rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1: Please refer to Figures 1-5This utility model provides the following technical solution: a high-temperature resistant and corrosion-resistant stainless steel boiler chimney, including a pipe 1 and scrapers 8. A chimney body 2 is provided at the top of the pipe 1, and an arc-shaped cover 3 is welded and fixed to the top of the chimney body 2 by a bracket. A connecting box 4 is welded and fixed to the top of the arc-shaped cover 3. A fixed shaft 5 is welded and fixed inside the chimney body 2. A connecting frame 6 is connected through the outside of the fixed shaft 5. A connecting ring 7 is welded and fixed to the outside of the connecting frame 6. Multiple sets of scrapers 8 are fixed to the outside of the connecting ring 7, and the multiple sets of scrapers 8 are distributed at equal angles about the central axis of the connecting ring 7. The scrapers 8 are inclined outside the connecting ring 7. A guide mechanism is provided outside the fixed shaft 5. A reciprocating motion mechanism is provided inside the connecting box 4. A striking mechanism is provided at the top of the arc-shaped cover 3. The guide mechanism includes a spiral groove 10 opened on the outside of the fixed shaft 5. A protrusion 9 is slidably connected to the inside of the spiral groove 10. One side of the protrusion 9 is fixed to the connecting frame 6. The reciprocating motion mechanism includes a bottom fixed to the arc-shaped cover 3. The installed dual-axis motor 11 has levers 12 fixed at both ends. One end of the lever 12 is rotatably connected to a cylindrical block 13 via a rotating shaft. A horizontal plate 14 is slidably connected to the outer side of the cylindrical block 13. A vertical rod 15 is fixedly connected to the bottom of the horizontal plate 14. A limit ring a16 is welded to the bottom of the vertical rod 15. The outer side of the limit ring a16 is rotatably connected to the connecting frame 6. The outer side of the vertical rod 15 is slidably connected to the arc-shaped cover 3. The end of the lever 12 near the cylindrical block 13 is rotatably connected to the cylindrical block 13 via a rotating shaft. The curved cover 3 is equipped with rollers 20 and has a groove inside that matches the vertical rod 15. The vertical rod 15 and the curved cover 3 form a sliding structure. The striking mechanism includes a rotating rod 17 that is rotatably connected to both sides of the top of the curved cover 3 via a rotating shaft. One end of the rotating rod 17 is fixedly connected to a striking block 18, which is made of rubber. The other end of the rotating rod 17 abuts against a spring a19. One end of the spring a19 is fixed to the curved cover 3. The rotating rod 17 and the curved cover 3 form a rotating structure via a rotating shaft.

[0025] Please see Figures 1-5This high-temperature resistant and corrosion-resistant stainless steel boiler chimney is made of 309S stainless steel, an austenitic chromium-nickel stainless steel, which has excellent high-temperature acid resistance and high-temperature strength. During cleaning of the inside of the chimney body 2, the dual-shaft motor 11 is activated. The dual-shaft motor 11 drives two sets of levers 12 to rotate, causing the levers 12 to rotate the cylindrical blocks 13 at their ends. The cylindrical blocks 13 rotate in the through slots of the horizontal plate 14, thereby causing the horizontal plate 14 to move up and down reciprocally. The bottom of the horizontal plate 14... The vertical rod 15 also moves synchronously back and forth. When the vertical rod 15 moves, it can push the connecting frame 6 to move outside the fixed shaft 5 through the limiting ring a16. After the protrusion 9 on the inner side of the connecting frame 6 contacts the spiral groove 10, it will be guided by the spiral groove 10, so that the connecting frame 6 rotates outside the fixed shaft 5. The groove width of the spiral groove 10 is greater than the width of the protrusion 9, and after the protrusion 9 expands due to heat, it still maintains a gap with the spiral groove 10. The connecting frame 6 will drive the outer connecting ring 7 to rotate, so that the multiple sets of scrapers on the outer side of the connecting ring 7 will rotate. The scraper 8 contacts the inner wall of the chimney body 2. The scraper 8 is made of austenitic chromium-nickel stainless steel, which has excellent high-temperature acid resistance and high-temperature strength, adapting to the environment inside the chimney. These multiple sets of inclined scrapers 8 can move up and down while reciprocating, thus creating multiple directions and forms of contact with the inner wall of the chimney body 2, scraping away debris adhering to the inner wall of the chimney body 2, completing the cleaning of the inner wall of the chimney body 2. Simultaneously, when the lever 12 rotates, it also tilts against the rotating rod 17 via the roller 20 at its end. One end contacts the rotating rod 17, causing it to rotate. When the rotating rod 17 rotates, it compresses the spring a19. When the roller 20 disengages from the rotating rod 17, the spring a19 pushes the rotating rod 17 to rotate back to its original position. This causes the rotating rod 17 to drive the striking block 18 at its end to strike the arc-shaped cover 3, causing the debris and dust adhering to the bottom of the arc-shaped cover 3 to fall off. The striking block 18 is made of silicone rubber, which can prevent deformation under high temperature conditions. In this way, the stainless steel chimney of the boiler can be easily cleaned.

[0026] Example 2:

[0027] Please see Figure 1 , Figure 5 and Figure 6Based on Embodiment 1, an installation structure for the chimney is also disclosed, the specific structure of which is as follows: A fixing block a21 is fixedly connected to the outer side of one end of the pipe 1, and a limiting mechanism is provided at the top of the fixing block a21. The limiting mechanism includes a positioning block 22 welded and fixed to the top of the fixing block a21. A fixing block b23 is connected through the outer side of the positioning block 22. One side of the fixing block b23 is fixed to the chimney body 2. A spring b24 abuts against the inside of the positioning block 22. One end of the spring b24 abuts against a locking block 25. One side of the positioning block 22 engages with the fixed block b23. A toggle mechanism is provided on the top of the positioning block 22. The toggle mechanism includes a limiting ring b26 rotatably connected to the top of the positioning block 22. A rotating cover 27 is fixedly connected to the top of the limiting ring b26. An elliptical groove 28 and an arc-shaped groove 29 are provided inside the rotating cover 27. A connecting rod 30 abuts against the inner side of the elliptical groove 28. One end of the connecting rod 30 is fixedly connected to the locking block 25. A sliding groove matching the locking block 25 is provided inside the positioning block 22. The locking block 25 and the positioning block 22 form a sliding structure.

[0028] Please see Figure 1 , Figure 5 and Figure 6 This high-temperature and corrosion-resistant stainless steel boiler chimney, when connecting the pipe 1 and the chimney body 2, involves aligning two sets of positioning blocks 22 on one side of the pipe 1 with the fixing block b23. When the inclined surface of the locking block 25 inside the positioning block 22 contacts the fixing block b23, the locking block 25 moves and presses against the spring b24 on one side. When the locking block 25 contacts the locking groove inside the fixing block b23, the spring b24 pushes the locking block 25 to move and engage with the fixing block b23, thus completing the connection between the pipe 1 and the chimney body 2. When it is necessary to disassemble the two, by rotating the rotating cover 27, the rotating cover 27 will press against the connecting rod 30 through the elliptical groove 28, causing the connecting rod 30 to move the locking block 25. When the connecting rod 30 moves and engages with the arc groove 29, the locking block 25 will completely disengage from the fixing block a21. At this time, the movable pipe 1 can be separated from the chimney body 2. In this way, the connection between the pipe 1 and the chimney body 2 can be easily achieved through the above operation.

[0029] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-temperature resistant and corrosion-resistant stainless steel boiler chimney, comprising a pipe (1) and a scraper (8), wherein a chimney body (2) is provided on the top of the pipe (1), and an arc-shaped cover (3) is welded and fixed on the top of the chimney body (2) by a bracket. Its features are: A connecting box (4) is welded and fixed to the top of the arc-shaped cover (3). A fixed shaft (5) is welded and fixed inside the chimney body (2). A connecting frame (6) is connected through the outside of the fixed shaft (5). A connecting ring (7) is welded and fixed to the outside of the connecting frame (6). Multiple scrapers (8) are fixed to the outside of the connecting ring (7), and the multiple scrapers (8) are distributed at equal angles about the central axis of the connecting ring (7). The scrapers (8) are inclined outside the connecting ring (7). A guide mechanism is provided outside the fixed shaft (5). A reciprocating motion mechanism is provided inside the connecting box (4). A knocking mechanism is provided on the top of the arc-shaped cover (3). The outer side of one end of the pipe (1) is fixedly connected to a fixing block a (21), and a limit mechanism is provided on the top of the fixing block a (21).

2. The high-temperature resistant and corrosion-resistant stainless steel chimney for boilers according to claim 1, characterized in that: The guiding mechanism includes a spiral groove (10) opened on the outside of the fixed shaft (5), and a protrusion (9) is slidably connected to the inside of the spiral groove (10). One side of the protrusion (9) is fixed to the connecting frame (6).

3. The high-temperature resistant and corrosion-resistant stainless steel boiler chimney according to claim 1, characterized in that: The reciprocating motion mechanism includes a dual-axis motor (11) fixedly installed at the bottom of the arc-shaped cover (3). Both ends of the dual-axis motor (11) are fixed with levers (12). One end of the lever (12) is rotatably connected to a cylindrical block (13) via a rotating shaft. A horizontal plate (14) is slidably connected to the outside of the cylindrical block (13). A vertical rod (15) is fixedly connected to the bottom of the horizontal plate (14). A limit ring a (16) is welded and fixed to the bottom of the vertical rod (15). The outside of the limit ring a (16) is rotatably connected to the connecting frame (6). The outside of the vertical rod (15) is slidably connected to the arc-shaped cover (3). A roller (20) is rotatably connected to the end of the lever (12) near the cylindrical block (13) via a rotating shaft.

4. The high-temperature resistant and corrosion-resistant stainless steel boiler chimney according to claim 1, characterized in that: The striking mechanism includes a rotating rod (17) that is rotatably connected to both sides of the top of the arc-shaped cover (3) via a rotating shaft. One end of the rotating rod (17) is fixedly connected to a striking block (18), which is made of rubber. The other end of the rotating rod (17) abuts against a spring a (19), and one end of the spring a (19) is fixed to the arc-shaped cover (3).

5. A high-temperature resistant and corrosion-resistant stainless steel boiler chimney according to claim 1, characterized in that: The limiting mechanism includes a positioning block (22) welded and fixed to the top of a fixed block a (21). A fixed block b (23) is connected through the outside of the positioning block (22). One side of the fixed block b (23) is fixed to the chimney body (2). A spring b (24) is abutted inside the positioning block (22). One end of the spring b (24) abuts against a locking block (25). One side of the locking block (25) is engaged with the fixed block b (23). A toggle mechanism is provided on the top of the positioning block (22). The toggle mechanism includes a limiting ring b (26) rotatably connected to the top of the positioning block (22).

6. A high-temperature resistant and corrosion-resistant stainless steel boiler chimney according to claim 5, characterized in that: The top of the limiting ring b (26) is fixedly connected to a rotating cover (27). The rotating cover (27) has an elliptical groove (28) and an arc groove (29) inside. The inner side of the elliptical groove (28) abuts against a connecting rod (30). One end of the connecting rod (30) is fixedly connected to the locking block (25).

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