Dust removal device for hot blast stove

Abstract

The utility model relates to the technical field of dust removal of hot-blast stoves, and discloses a dust removal device for a hot-blast stove, which comprises a hot-blast stove chimney and is characterized in that when dust particles on the inner wall of the hot-blast stove chimney are scraped and cleaned through rotation of a scraper, the cleaned dust particles fall into a dust collection box to be collected; and therefore, the phenomena that the combustion efficiency is influenced and slag bonding and blockage are caused in the hot blast stove after scraping and cleaning are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal for hot blast furnaces, in particular to a dust removal device for hot blast furnaces. Background Art

[0002] A hot blast furnace is a thermal power machine. It has become a replacement product for electric heat sources and traditional steam power heat sources in many industries. There are many varieties and complete series of hot blast furnaces. They are divided into manual burning and machine burning according to the coal adding method, and into coal, oil, gas furnaces, etc. according to the type of fuel. The waste flue gas generated by the hot blast furnace is usually discharged into the atmosphere through the chimney above the hot blast furnace. The dust particles in the flue gas are easy to accumulate on the inner wall of the chimney of the hot blast furnace, so a dust removal device is needed to clean it.

[0003] Some dust removal devices for hot blast stoves currently on the market: for example, the utility model patent with authorization announcement number CN219713398U discloses a dust removal device for hot blast stoves, which can scrape and clean the dust on the inner wall of the hot blast stove chimney with the help of the thrust of the flue gas, and can also manually drive the scraper ring to scrape and clean the dust on the inner wall of the hot blast stove chimney when the hot blast stove is shut down. However, since the device lacks a mechanism for collecting the scraped and cleaned dust, the scraped and cleaned dust will fall back into the hot blast stove, thereby further increasing the ash content in the hot blast stove, affecting the combustion efficiency, and easily causing slagging and blockage in the stove, affecting the normal operation of the hot blast stove.

[0004] Therefore, we propose a dust removal device for a hot blast stove to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the problem that some current dust removal devices for hot blast furnaces lack a mechanism for collecting the scraped and cleaned dust, so that the scraped and cleaned dust falls back into the hot blast furnace, thereby further increasing the ash content in the hot blast furnace, affecting the combustion efficiency, and easily causing slagging and blockage in the furnace, affecting the normal operation of the hot blast furnace.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a dust removal device for a hot blast stove, comprising a hot blast stove chimney, a ring gear is arranged at the top of the hot blast stove chimney, a rotating ring is arranged on the lower surface of the ring gear, a rotating groove rotatably connected to the rotating ring is opened at the top of the hot blast stove chimney, a motor is arranged at a position near the top of the side of the hot blast stove chimney, a driving gear meshing with the ring gear is arranged on the output shaft of the motor, an L-shaped connecting rod is arranged on the inner ring surface of the ring gear, a scraper in contact with the inner wall of the hot blast stove chimney is arranged at the bottom end of the L-shaped connecting rod, a mechanism block is arranged at a position near the top of the scraper side, and a mechanism block is arranged at a position near the bottom of the scraper side A baffle is provided, a limiting column is connected between the mechanism block and the baffle, a mechanism slot is provided on the mechanism block, a take-up wheel is rotatably connected in the mechanism slot, a plurality of rotating bayonet holes are provided on both side surfaces of the take-up wheel, a spring cavity is provided inside the mechanism block, a limiting plate and a compression spring are provided in the spring cavity, a block slidably connected to the rotating bayonet is provided on the side of the limit plate, and a T-shaped push plate is connected to the top of the limit plate, a sliding groove slidably connected to the T-shaped push plate is provided on the upper surface of the mechanism block, a pulling line is provided on the take-up wheel, a dust collecting box is movably provided at a position of the scraper near the bottom, a first mounting slot is provided on the top of the ring gear, and a filter screen plate is provided in the first mounting slot.

[0007] Furthermore, the ash collecting box includes an annular support box, which is provided with a placement groove and an adaptation groove, an ash collecting box is arranged in the placement groove, the adaptation groove is adapted to the scraper and the baffle, and a support plate is connected in the adaptation groove, the support plate is connected to the pulling line, and a limiting sliding hole is provided on the support plate which is slidably connected to the limiting column.

[0008] Furthermore, the filter screen plate includes an annular plate body adapted to the first mounting groove, a second mounting groove is provided on the upper surface of the annular plate body, a filter screen is arranged in the second mounting groove, a plurality of fixing bolts are arranged on the filter screen, and the filter screen is connected to the second mounting groove by fixing bolts.

[0009] Furthermore, a first annular magnet is arranged on the bottom wall of the first installation groove, and a second annular magnet is arranged on the lower surface of the annular plate body, and the first annular magnet and the second annular magnet are magnets of opposite polarities.

[0010] Furthermore, a plurality of evenly distributed balls are arranged around the rotating ring, and ball sliding grooves adapted to the balls are provided on both inner side walls of the rotating groove.

[0011] Furthermore, the upper surface of the block is configured as an arc-shaped structure.

[0012] The beneficial effects of the utility model are as follows: an annular gear is arranged at the top of the hot blast stove chimney, a driving gear meshing with the annular gear is arranged on the motor output shaft on the side of the hot blast stove chimney, a scraper is arranged at the bottom end of the L-shaped connecting rod on the inner ring surface of the annular gear, a mechanism block is arranged on the side of the scraper near the top, and a baffle is arranged on the side of the scraper near the bottom, a take-up wheel is rotatably connected in the mechanism groove of the mechanism block, a pulling line is arranged on the take-up wheel, and an ash box is movably arranged near the bottom of the scraper, when the scraper rotates to scrape and clean the dust particles on the inner wall of the hot blast stove chimney, the cleaned dust particles will fall into the ash box for collection, thereby preventing the scraped and cleaned dust particles from falling back into the hot blast stove, affecting the combustion efficiency and causing slagging and blockage in the furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of a dust removal device for a hot blast furnace according to the utility model;

[0014] Figure 2 It is a cross-sectional structural schematic diagram of a dust removal device for a hot blast furnace of the utility model;

[0015] Figure 3 This utility model Figure 2 A magnified schematic diagram of the local structure A;

[0016] Figure 4 This utility model Figure 2 A magnified schematic diagram of the local structure B;

[0017] Figure 5 It is a partial structural schematic diagram of a dust removal device for a hot blast furnace of the utility model;

[0018] Figure 6 This utility model Figure 5 A magnified schematic diagram of the local structure C;

[0019] Figure 7 The utility model is a schematic diagram of the structure of an ash collecting box of a dust removal device for a hot blast furnace.

[0020] The names corresponding to the marks in the figure are:

[0021] 1. Chimney of hot blast furnace; 2. Ring gear; 3. Rotating ring; 4. Motor; 5. Driving gear; 6. L-shaped connecting rod; 7. Scraper; 8. Mechanism block; 81. Mechanism slot; 9. Baffle; 10. Limiting column; 11. Take-up wheel; 111. Rotating bayonet; 12. Limiting plate; 13. Compression spring; 14. Block; 15. T-shaped push plate; 16. Pulling line; 17. Ash collecting box; 171. Ring support box; 172. Ash collecting box; 173. Support plate; 1731. Limiting sliding hole; 18. Filter screen plate; 181. Ring plate body; 182. Filter screen; 183. Fixing bolt; 19. First ring magnet; 20. Second ring magnet; 21. Ball bearing. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0023] Embodiments of the present utility model:

[0024] Embodiment 1

[0025] like Figure 1-Figure 7As shown, the utility model provides a dust removal device for a hot blast stove, comprising a hot blast stove chimney 1, a ring gear 2 is arranged on the top of the hot blast stove chimney 1, a rotating ring 3 is arranged on the lower surface of the ring gear 2, a rotating groove rotatably connected to the rotating ring 3 is opened on the top of the hot blast stove chimney 1, and a motor 4 is arranged near the top of the side of the hot blast stove chimney 1, a driving gear 5 meshing with the ring gear 2 is arranged on the output shaft of the motor 4, an L-shaped connecting rod 6 is arranged on the inner ring surface of the ring gear 2, a scraper 7 in contact with the inner wall of the hot blast stove chimney 1 is arranged at the bottom end of the L-shaped connecting rod 6, and a scraper 7 in contact with the inner wall of the hot blast stove chimney 1 is arranged near the top of the side of the scraper 7 There is a mechanism block 8, and a baffle plate 9 is arranged near the bottom of the scraper 7. A limit column 10 is connected between the mechanism block 8 and the baffle plate 9. A mechanism groove 81 is provided on the mechanism block 8. A take-up wheel 11 is rotatably connected in the mechanism groove 81. A plurality of rotating bayonet holes 111 are arranged on both sides of the take-up wheel 11. A spring cavity is provided inside the mechanism block 8. A limit plate 12 and a compression spring 13 are arranged in the spring cavity. A card block 14 slidably connected to the rotating bayonet hole 111 is arranged on the side of the limit plate 12. The upper surface of the card block 14 is arranged in an arc-shaped structure. A T-shaped push plate 15 is connected to the top of the limit plate 12. The upper surface of the mechanism block 8 is provided with a There is a slide groove slidably connected to the T-shaped push plate 15, a pulling line 16 is arranged on the take-up wheel 11, and an ash collecting box 17 is movably arranged near the bottom of the scraper 7. The ash collecting box 17 includes an annular support box 171, and a placement groove and an adaptation groove 1711 are provided on the annular support box 171. An ash collecting box 172 is arranged in the placement groove. The adaptation groove 1711 is adapted to the scraper 7 and the baffle 9, and a support plate 173 is connected in the adaptation groove 1711. The support plate 173 is connected to the pulling line 16, and a limiting sliding hole 1731 slidably connected to the limiting column 10 is provided on the support plate 173. The top of the ring gear 2 is provided with a first The installation groove is provided with a filter screen plate 18 in the first installation groove. The driving gear 5 can be rotated by starting the motor 4, and the ring gear 2 can be rotated under meshing cooperation, so that the dust particles adhered to the inner wall of the hot blast furnace chimney 1 can be scraped and cleaned by the scraper 7, and then the cleaned dust particles will fall into the ash collecting box 17 for collection. According to actual needs, by opening the filter screen plate 18, and then rotating the take-up wheel 11, the ash collecting box 17 is pulled up and down by the pulling wire 16, and the ash collecting box 172 of the ash collecting box 17 can be removed, and the dust collected in the ash collecting box 172 can be cleaned.

[0026] Embodiment 2

[0027] like Figure 1-Figure 7As shown, on the basis of the first embodiment of the utility model: the filter screen plate 18 includes an annular plate body 181 adapted to the first mounting groove, a second mounting groove is provided on the upper surface of the annular plate body 181, a filter screen 182 is arranged in the second mounting groove, a plurality of fixing bolts 183 are provided on the filter screen 182, and the filter screen 182 is connected to the second mounting groove by the fixing bolts 183, a first annular magnet 19 is provided on the bottom wall of the first mounting groove, a second annular magnet 20 is provided on the lower surface of the annular plate body 181, the first annular magnet 19 and the second annular magnet 20 are magnets of opposite polarity, which is convenient for quick removal and installation of the filter screen plate 18, and the setting of the fixing bolts 183 can also remove the filter screen 182 for cleaning and replacement according to actual needs, a plurality of evenly distributed balls 21 are arranged around the rotating ring 3, and ball slide grooves adapted to the balls 21 are provided on both inner side walls of the rotating groove, through which friction can be reduced and rotation is convenient.

Claims

1. A dust removal device for a hot blast stove, comprising a hot blast stove chimney (1), characterized in that: A ring gear (2) is arranged at the top of the hot blast furnace chimney (1), a rotating ring (3) is arranged on the lower surface of the ring gear (2), a rotating groove rotatably connected to the rotating ring (3) is opened at the top of the hot blast furnace chimney (1), and a motor (4) is arranged at a position near the top of the side of the hot blast furnace chimney (1), and a driving gear (5) meshing with the ring gear (2) is arranged on the output shaft of the motor (4), an L-shaped connecting rod (6) is arranged on the inner ring surface of the ring gear (2), and a scraper (7) in contact with the inner wall of the hot blast furnace chimney (1) is arranged at the bottom end of the L-shaped connecting rod (6), a mechanism block (8) is arranged at a position near the top of the side of the scraper (7), and a baffle (9) is arranged at a position near the bottom of the side of the scraper (7), a limiting column (10) is connected between the mechanism block (8) and the baffle (9), and the mechanism block ( A mechanism groove (81) is provided on the mechanism block (8), a wire take-up wheel (11) is rotatably connected in the mechanism groove (81), a plurality of rotating bayonet holes (111) are provided on both side surfaces of the wire take-up wheel (11), a spring cavity is provided inside the mechanism block (8), a limit plate (12) and a compression spring (13) are provided in the spring cavity, a block (14) slidably connected to the rotating bayonet hole (111) is provided on the side of the limit plate (12), and a T-shaped push plate (15) is connected to the top of the limit plate (12), a sliding groove slidably connected to the T-shaped push plate (15) is provided on the upper surface of the mechanism block (8), a pulling line (16) is provided on the wire take-up wheel (11), a dust collecting box (17) is movably provided near the bottom of the scraper (7), a first mounting groove is provided on the top of the ring gear (2), and a filter screen (18) is provided in the first mounting groove.

2. A dust removal device for a hot blast stove according to claim 1, characterized in that: The ash collecting box (17) comprises an annular support box (171), the annular support box (171) is provided with a placement groove and an adaptation groove (1711), an ash collecting box (172) is arranged in the placement groove, the adaptation groove (1711) is adapted to the scraper (7) and the baffle (9), and a support plate (173) is connected in the adaptation groove (1711), the support plate (173) is connected to the pulling line (16), and a limiting sliding hole (1731) is provided on the support plate (173) which is slidably connected to the limiting column (10).

3. The dust removal device for a hot blast stove according to claim 1, characterized in that: The filter screen plate (18) comprises an annular plate body (181) adapted to the first mounting groove, a second mounting groove is provided on the upper surface of the annular plate body (181), a filter screen (182) is provided in the second mounting groove, a plurality of fixing bolts (183) are provided on the filter screen (182), and the filter screen (182) is connected to the second mounting groove via the fixing bolts (183).

4. A dust removal device for a hot blast stove according to claim 3, characterized in that: A first annular magnet (19) is arranged on the bottom wall of the first installation groove, and a second annular magnet (20) is arranged on the lower surface of the annular plate (181); the first annular magnet (19) and the second annular magnet (20) are magnets of opposite polarities.

5. The dust removal device for a hot blast stove according to claim 1, characterized in that: The rotating ring (3) is surrounded by a plurality of evenly distributed balls (21), and both inner side walls of the rotating groove are provided with ball sliding grooves matched with the balls (21).

6. A dust removal device for a hot blast stove according to claim 1, characterized in that: The upper surface of the clamping block (14) is arranged in an arc-shaped structure.

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