Preheater with heat exchange tube cleaning structure

Abstract

The utility model discloses a preheater with a heat exchange tube cleaning structure, which relates to the technical field of preheaters and comprises a cyclone and a limit block a, the top of the cyclone is fixedly connected with an air outlet, and a heat exchange tube body penetrates through one side of the cyclone. According to the preheater with the heat exchange tube cleaning structure, a motor a is started to drive a threaded rod and a connecting plate to conduct threaded transmission, so that the connecting plate moves, when the connecting plate moves, a limiting block a can be driven to move at the bottom of a connecting sleeve, and therefore the connecting sleeve is pulled to move, and when the connecting sleeve moves, a protruding block on the inner wall can make contact with a spiral groove in the outer side of a vertical rod; and the connecting sleeve can drive the connecting ring to rotate through the connecting rod on the outer side, the connecting ring can drive the multiple sets of scraping plates on the outer side to rotate, and therefore the scraping plates can rotate while moving up and down, and crust on the inner wall of the heat exchange pipe body is scraped away.

Description

Technical Field

[0001] This utility model relates to the field of preheater technology, specifically a preheater with a heat exchange tube cleaning structure. Background Technology

[0002] The preheater is a key piece of equipment in the cement production process, mainly used to improve the thermal efficiency of cement kilns and reduce energy consumption. It exchanges heat between high-temperature flue gas and raw materials, transferring the heat energy from the flue gas to the raw materials, thereby increasing the temperature of the raw materials and heating the kiln.

[0003] In cement production, a preheater is needed to exchange heat between high-temperature flue gas and raw materials to heat the kiln. After long-term use, a thick layer of solid material will form inside the heat exchange tubes of the existing preheater, forming a crust. This crust needs to be cleaned and scraped off with a cleaning brush. However, the existing cleaning brush scraping method is relatively simple and difficult to effectively remove the crust. Utility Model Content

[0004] The purpose of this invention is to provide a preheater with a heat exchange tube cleaning structure to solve the problem mentioned in the background art that existing preheaters are difficult to effectively clean the heat exchange tubes.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a preheater with a heat exchange tube cleaning structure, comprising: a cyclone and a limiting block a, wherein an air outlet is fixedly connected to the top of the cyclone, and a heat exchange tube body penetrates one side of the cyclone.

[0006] A connecting box is fixedly connected to one side of the cyclone tube. A motor a is installed inside the connecting box. A threaded rod is fixedly connected to the output end of the motor a. One end of the threaded rod is movably connected to the connecting box through a bearing. A connecting plate is threadedly connected to the outer side of the threaded rod. A vertical rod is slidably connected to one end of the connecting plate. Horizontal plates are fixedly connected to both ends of the vertical rod, and both ends of the horizontal plates are fixedly connected to the inner side of the heat exchange tube body.

[0007] Preferably, a limiting block a is fixedly connected to the top of the connecting plate, and a ball bearing a is rotatably connected to both the bottom and top of the limiting block a, and a connecting sleeve is rotatably connected to the outer side of the ball bearing a.

[0008] Preferably, a protrusion is fixedly connected to the inner side of the connecting sleeve, the end of the protrusion is hemispherical, and a spiral groove is provided on the outer side of the vertical rod, and the spiral groove is slidably connected to the protrusion.

[0009] Preferably, multiple sets of connecting rods are fixedly connected to the outer side of the connecting sleeve, and the multiple sets of connecting rods are distributed at equal angles about the central axis of the connecting sleeve.

[0010] Preferably, one end of the connecting rod is fixedly connected to a connecting ring, and multiple sets of scrapers are fixedly connected to the outer side of the connecting ring, and the scrapers are inclined.

[0011] Preferably, the multiple sets of scrapers are distributed at equal angles about the central axis of the connecting ring, and the scrapers are disposed on one side of the inner wall of the heat exchange tube body.

[0012] Preferably, a feed pipe is connected to the outside of the heat exchange tube body, and a motor b is fixedly connected to one side of the feed pipe via a mounting plate.

[0013] Preferably, a drive gear is fixedly connected to the output end of the motor b, and a driven gear is meshed with the outer side of the drive gear.

[0014] Preferably, multiple sets of limiting blocks b are fixed on both sides of the driven gear, and the multiple sets of limiting blocks b are distributed at equal angles about the central axis of the driven gear.

[0015] Preferably, multiple sets of feeding plates are fixedly connected to the inner side of the driven gear, and the feeding plates are inclined. The outer side of the limiting block b is slidably connected to the feed pipe.

[0016] Compared with existing technologies, the advantages of this preheater with a heat exchange tube cleaning structure are:

[0017] 1. During cement production, a preheater is needed to exchange heat between the high-temperature flue gas and the raw materials to heat the kiln. When cleaning the inside of the heat exchange tube body, the motor a is started to drive the threaded rod and the connecting plate through threaded transmission, causing the connecting plate to move. When the connecting plate moves, it will drive the limiting block a to move at the bottom of the connecting sleeve, thereby pulling the connecting sleeve to move. When the connecting sleeve moves, the protrusion on the inner wall will contact the spiral groove on the outside of the vertical rod, thereby causing the connecting sleeve to rotate. The connecting sleeve will drive the connecting ring to rotate through the connecting rod on the outside, and the connecting ring will drive the multiple sets of scrapers on the outside to rotate as well. In this way, the scrapers can rotate while moving up and down, scraping off the scale on the inner wall of the heat exchange tube body. Through the above operation, the scale on the inner wall of the heat exchange tube body can be scraped off quickly, completing the cleaning of the heat exchange tube body.

[0018] 2. During cement production, a preheater is needed to exchange heat between the high-temperature flue gas and the raw materials to heat the kiln. To ensure uniform feeding of the heat exchange tube body through the feed pipe, the starting motor b drives the drive gear and driven gear to mesh, thereby rotating the driven gear. When the material comes into contact with the rotating feed plate inside the driven gear, the inclined feed plate disperses and conveys the material, allowing it to enter the connecting box evenly, thus completing uniform feeding. The rotating feed plate also prevents the material entering the feed pipe from becoming blocked. In this way, the above operation facilitates uniform feeding of the material entering the heat exchange tube body. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0020] Figure 2 This is a three-dimensional cross-sectional view of the heat exchange tube body of this utility model;

[0021] Figure 3 This is a three-dimensional cross-sectional view of the connecting sleeve of this utility model;

[0022] Figure 4 This is a three-dimensional cross-sectional view of the feed pipe of this utility model;

[0023] Figure 5 This is an enlarged schematic diagram of A of this utility model.

[0024] In the diagram: 1. Cyclone tube; 2. Air outlet; 3. Heat exchanger tube body; 4. Motor a; 5. Threaded rod; 6. Connecting plate; 7. Connecting box; 8. Limiting block a; 9. Connecting sleeve; 10. Protrusion; 11. Spiral groove; 12. Connecting rod; 13. Connecting ring; 14. Scraper; 15. Vertical rod; 16. Feed pipe; 17. Motor b; 18. Drive gear; 19. Driven gear; 20. Feeding plate; 21. Limiting block b. Detailed Implementation

[0025] 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.

[0026] Please see Figures 1-5 This utility model provides a technical solution: a preheater with a heat exchange tube cleaning structure, comprising: a cyclone 1 and a limiting block a8, an air outlet 2 fixedly connected to the top of the cyclone 1, and a heat exchange tube body 3 penetrating one side of the cyclone 1.

[0027] A connecting box 7 is fixedly connected to one side of the cyclone 1. A motor a4 is installed inside the connecting box 7. A threaded rod 5 is fixedly connected to the output end of the motor a4. One end of the threaded rod 5 is movably connected to the connecting box 7 through a bearing. A connecting plate 6 is threadedly connected to the outside of the threaded rod 5. A vertical rod 15 is slidably connected to one end of the connecting plate 6. A horizontal plate is fixedly connected to both ends of the vertical rod 15, and both ends of the horizontal plate are fixedly connected to the inside of the heat exchange tube body 3.

[0028] A limiting block a8 is fixedly connected to the top of the connecting plate 6. Ball bearings a are rolledly connected to both the bottom and top of the limiting block a8, and a connecting sleeve 9 is rolledly connected to the outer side of the ball bearings a. A protrusion 10 is fixedly connected to the inner side of the connecting sleeve 9. The end of the protrusion 10 is hemispherical. A spiral groove 11 is opened on the outer side of the vertical rod 15, and the spiral groove 11 is slidably connected to the protrusion 10. Multiple sets of connecting rods 12 are fixedly connected to the outer side of the connecting sleeve 9, and the multiple sets of connecting rods 12 are distributed at equal angles about the central axis of the connecting sleeve 9. One end is fixedly connected to a connecting ring 13, and multiple sets of scrapers 14 are fixedly connected to the outside of the connecting ring 13, and the scrapers 14 are inclined. The multiple sets of scrapers 14 are distributed at equal angles about the central axis of the connecting ring 13. The scrapers 14 are set on one side of the inner wall of the heat exchange tube body 3. The end of the connecting plate 6 is provided with a through groove that matches the vertical rod 15. The bottom of the connecting sleeve 9 is provided with an annular groove that matches the limiting block a8. The vertical rod 15 and the connecting plate 6 form a sliding structure, and the threaded rod 5 and the connecting plate 6 form a threaded transmission structure.

[0029] In practice, during cement production, a preheater is needed to exchange heat between the high-temperature flue gas and the raw materials to heat the kiln. When cleaning the inside of the heat exchange tube body 3, the motor a4 is started to drive the threaded rod 5 and the connecting plate 6 through threaded transmission, causing the connecting plate 6 to move. As the connecting plate 6 moves, it drives the limiting block a8 to move at the bottom of the connecting sleeve 9, thereby pulling the connecting sleeve 9 to move. When the connecting sleeve 9 moves, the protrusion 10 on the inner wall contacts the spiral groove 11 on the outer side of the vertical rod 15, causing the connecting sleeve 9 to rotate. 9 will drive the connecting ring 13 to rotate through the connecting rod 12 on the outside, and the connecting ring 13 will drive the multiple sets of scrapers 14 on the outside to rotate as well. In this way, the scrapers 14 can rotate while moving up and down. Since the scrapers 14 are set at an angle, they can contact the inner wall of the heat exchange tube body 3 when moving up and down and rotating, and increase the friction with the inner wall of the heat exchange tube body 3, thereby scraping off the scale on the inner wall of the heat exchange tube body 3. In this way, the scale on the inner wall of the heat exchange tube body 3 can be scraped off quickly through the above operation, and the cleaning of the heat exchange tube body 3 can be completed.

[0030] Please see Figures 1-4A feed pipe 16 is connected to the outer side of the heat exchange tube body 3. A motor b17 is fixedly connected to one side of the feed pipe 16 via a mounting plate. A drive gear 18 is fixedly connected to the output end of the motor b17. A driven gear 19 is meshed with the outer side of the drive gear 18. Multiple sets of limiting blocks b21 are fixed on both sides of the driven gear 19, and the multiple sets of limiting blocks b21 are distributed at equal angles about the central axis of the driven gear 19. The feed pipe 16 is divided into two parts by the driven gear 19. The cut section has a sliding groove that matches the limiting block b21. The two sets of feed pipes 16 are connected by an "L"-shaped bracket. Multiple sets of feeding plates 20 are fixedly connected to the inner side of the driven gear 19, and the feeding plates 20 are inclined. The outer side of the limiting block b21 is slidably connected to the feed pipe 16. The inside of the feed pipe 16 has a limiting groove that matches the limiting block b21. The limiting block b21 and the feed pipe 16 form a sliding structure. The drive gear 18 and the driven gear 19 form a meshing transmission structure.

[0031] In practice, during cement production, a preheater is needed to exchange heat between the high-temperature flue gas and the raw materials to heat the kiln. To ensure uniform feeding of the heat exchange tube body 3 through the feed pipe 16, the motor b17 is started to drive the drive gear 18 to rotate. The drive gear 18 meshes with the driven gear 19, thereby driving the driven gear 19 to rotate. The limiting blocks b21 on both sides of the driven gear 19 slide in the feed pipe 16, thereby limiting the driven gear 19. When the material comes into contact with the rotating feeding plate 20 inside the driven gear 19, the inclined feeding plate 20 will disperse and transport the material, allowing it to enter the connecting box 7 evenly, thus completing uniform feeding. The rotating feeding plate 20 can also prevent the material entering the feed pipe 16 from becoming blocked. In this way, the above operation can facilitate the uniform feeding of the material entering the heat exchange tube body 3.

[0032] In summary: When using a preheater with a heat exchange tube cleaning structure, the material enters the heat exchange tube body 3 through the feed pipe 16, and the gas passes through the heat exchange tube body 3 to send the material into the cyclone 1 to heat the material. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0033] 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 preheater with a heat exchange tube cleaning structure, comprising: A cyclone separator (1) and a limiting block a (8), wherein an air outlet (2) is fixedly connected to the top of the cyclone separator (1), and a heat exchange tube body (3) penetrates one side of the cyclone separator (1), characterized in that, A connecting box (7) is fixedly connected to one side of the cyclone tube (1). A motor a (4) is installed inside the connecting box (7). A threaded rod (5) is fixedly connected to the output end of the motor a (4). One end of the threaded rod (5) is movably connected to the connecting box (7) through a bearing. A connecting plate (6) is threadedly connected to the outside of the threaded rod (5). A vertical rod (15) is slidably connected to one end of the connecting plate (6). A horizontal plate is fixedly connected to both ends of the vertical rod (15), and both ends of the horizontal plate are fixedly connected to the inside of the heat exchange tube body (3).

2. A preheater with a heat exchange tube cleaning structure according to claim 1, characterized in that: The top of the connecting plate (6) is fixedly connected to a limiting block a (8), and the bottom and top of the limiting block a (8) are both connected to a ball a, and the outer side of the ball a is connected to a connecting sleeve (9).

3. A preheater with a heat exchange tube cleaning structure according to claim 2, characterized in that: The inner side of the connecting sleeve (9) is fixedly connected to a protrusion (10), the end of the protrusion (10) is hemispherical, and the outer side of the vertical rod (15) is provided with a spiral groove (11), and the spiral groove (11) is slidably connected to the protrusion (10).

4. A preheater with a heat exchange tube cleaning structure according to claim 3, characterized in that: The outer side of the connecting sleeve (9) is fixedly connected to multiple sets of connecting rods (12), and the multiple sets of connecting rods (12) are distributed at equal angles about the central axis of the connecting sleeve (9).

5. A preheater with a heat exchange tube cleaning structure according to claim 4, characterized in that: One end of the connecting rod (12) is fixedly connected to a connecting ring (13), and multiple sets of scrapers (14) are fixedly connected to the outside of the connecting ring (13), and the scrapers (14) are inclined.

6. A preheater with a heat exchange tube cleaning structure according to claim 5, characterized in that: The multiple sets of scrapers (14) are distributed at equal angles about the central axis of the connecting ring (13), and the scrapers (14) are located on one side of the inner wall of the heat exchange tube body (3).

7. A preheater with a heat exchange tube cleaning structure according to claim 1, characterized in that: The heat exchange tube body (3) is connected to a feed pipe (16) on the outside, and a motor b (17) is fixedly connected to one side of the feed pipe (16) through a mounting plate.

8. A preheater with a heat exchange tube cleaning structure according to claim 7, characterized in that: The output end of the motor b (17) is fixedly connected to a drive gear (18), and the outer side of the drive gear (18) is meshed with a driven gear (19).

9. A preheater with a heat exchange tube cleaning structure according to claim 8, characterized in that: Multiple sets of limiting blocks b (21) are fixed on both sides of the driven gear (19), and the multiple sets of limiting blocks b (21) are distributed at equal angles about the central axis of the driven gear (19).

10. A preheater with a heat exchange tube cleaning structure according to claim 9, characterized in that: Multiple sets of feeding plates (20) are fixedly connected to the inner side of the driven gear (19), and the feeding plates (20) are inclined. The outer side of the limiting block b (21) is slidably connected to the feed pipe (16).

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