Dust removal device for diffused flue gas of furnace top charging bucket of iron-making blast furnace

Abstract

The utility model relates to the technical field of blast furnace top dust removal, and particularly provides a dust removal device for diffused flue gas of an iron-making blast furnace top charging bucket, which is characterized in that a driving motor is started, a connecting block is fixedly connected with the driving motor and rotates together with the driving motor, so that a connecting sleeve and a filter screen barrel are driven to rotate together with the connecting sleeve; due to the fact that the filter screen barrel continuously rotates and the air inlet is fixed, the filter face continuously changes positions, the purpose of flue gas dust removal is achieved, and the filter screen barrel is taken out of the connecting block, so that the filter screen barrel is convenient to disassemble, clean and replace, and the dust removal efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to dust removal equipment technical field, concretely relates to a kind of iron blast furnace furnace top material tank diffusion flue gas dust removal device. BACKGROUND

[0002] Blast furnace ironmaking is a method for continuously producing liquid pig iron in blast furnace by using coke, iron-containing ore and flux, which has the advantages of relatively simple process, large output, high labor productivity and low energy consumption, etc., therefore, this traditional blast furnace ironmaking is still the main method of modern ironmaking, and in the ironmaking process, the furnace top material tank diffusion will diffuse a large amount of flue gas, which contains a lot of carbon dioxide, carbon monoxide, nitrogen oxides, water vapor and other organic substances, and solid smoke dust, etc., among which, the solid smoke dust contains particles such as iron, iron oxide, limestone and coal ash, therefore, when treating the flue gas, the flue gas needs to be first treated by dust removal to remove the particles, and then the treated flue gas is treated by desulfurization and denitrification, acid-base neutralization, etc.

[0003] At present, the blast furnace flue gas dust removal device in the prior art is mostly fixed filter screen or cloth bag for dust removal, but solid particles will be blocked after long time use, which affects the flue gas dust removal efficiency. Therefore, it is necessary to provide a kind of iron blast furnace furnace top material tank diffusion flue gas dust removal device to solve the above technical problems. UTILITY MODEL CONTENT

[0004] In view of the problems of the prior art, the utility model aims to provide a kind of iron blast furnace furnace top material tank diffusion flue gas dust removal device, which drives the connecting sleeve and the filter screen barrel to rotate under the action of the driving motor by starting the driving motor, so that the filter surface of the filter screen barrel is continuously replaced by the air inlet, and the purpose of flue gas dust removal is achieved, and the dust on the outside of the filter screen barrel can be removed by using the dust cleaning brush, so as to avoid blockage. In order to achieve the above purpose, the utility model provides the following technical scheme:

[0005] A kind of iron blast furnace furnace top material tank diffusion flue gas dust removal device, including flue gas dust removal box, the top of the flue gas dust removal box is provided with box cover, driving motor is fixedly installed at the bottom central position of the flue gas dust removal box, the telescopic end of the driving motor is fixedly connected with connecting block, the connecting block is sleeved with connecting sleeve outside, the connecting sleeve is fixedly installed with filter screen barrel, the lower surface of the box cover is provided with annular groove, the filter screen barrel is matched with annular groove, the inner wall of the relative two sides of the flue gas dust removal box is provided with concave connecting groove, the connecting groove is inserted with convex connecting plate, the connecting groove is matched with convex connecting plate, the connecting plate is provided with dust cleaning brush, the bristles of the dust cleaning brush are in contact with filter screen barrel.

[0006] Preferably, the upper surface of the box cover is centrally fixedly provided with an electric telescopic rod, and the telescopic end of the electric telescopic rod is fixedly connected with a scraper penetrating through the box cover, and the edge of the scraper is in contact with the inner wall of the filter screen barrel.

[0007] Preferably, opposite two side outer surfaces of the flue gas dust removal box are fixedly connected with an air outlet pipe and an air inlet cover respectively, one end of the air inlet cover is fixedly connected with an air inlet pipe, the position of the connecting groove is opposite to the air outlet pipe and the air inlet cover, the bottom of the flue gas dust removal box is fixedly connected with an ash discharge hopper, and the discharge outlet of the ash discharge hopper is hingedly provided with a baffle.

[0008] Preferably, four corners of the lower surface of the flue gas dust removal box are provided with supporting legs, and the end portions of the supporting legs are fixedly provided with anti-skid pads.

[0009] The utility model discloses a beneficial effect is:

[0010] 1. The utility model relates to a kind of flue gas dust removal devices of iron-making blast furnace roof tank, and drive motor is started, and connecting block is fixedly connected with drive motor, rotates together with drive motor, to drive connecting sleeve, filter screen barrel rotates together with connecting sleeve, since filter screen barrel rotates constantly, the filter surface of filter screen of air inlet is replaced constantly, to reach the purpose of flue gas dust removal.

[0011] 2, the utility model relates to a kind of flue gas dust removal devices of iron-making blast furnace roof tank, and ash cleaning brush is contacted with the outer surface of filter screen barrel, since filter screen barrel rotates constantly, ash cleaning brush can remove dust adhered to the outside of filter screen barrel, avoid the filter screen barrel to accumulate outer surface and block, in addition, ash cleaning brush together with connecting plate can be detached from the inner wall of flue gas dust removal box, to further facilitate operator replacement or cleaning ash cleaning brush.

[0012] 3, under the drive of electric telescopic rod, scraper connected to the telescopic end of the electric telescopic rod in the filter screen barrel carries out lifting movement, will scrape the dust of the inner wall of filter screen barrel, avoid the filter screen barrel to accumulate and block, improve the filtering function of filter screen barrel, simultaneously, connecting sleeve connected to filter screen barrel can be integrally taken out from connecting block, facilitate the disassembly and cleaning of filter screen barrel, to further improve the dust cleaning effect of filter screen barrel. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the external structure schematic diagram of the utility model;

[0014] Figure 2 It is the three-dimensional structure schematic diagram of the utility model;

[0015] Figure 3 It is the local enlarged view of the utility model;

[0016] Figure 4The utility model discloses a main view structure schematic drawing.

[0017] The meaning of the reference numerals in the drawing is as follows: 1, support leg, 2, ash discharge hopper, 3, air inlet pipe, 4, air inlet cover, 5, flue gas dust removal tank, 6, tank cover, 7, electric telescopic rod, 8, air outlet pipe, 9, ash cleaning brush, 10, filter screen barrel, 11, connecting groove, 12, connecting plate, 13, baffle, 14, annular groove, 15, scraper, 16, connecting block, 17, connecting sleeve, 18, driving motor. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0019] As Figure 1 , Figure 2 , Figure 3 , Figure 4 The utility model discloses a kind of flue gas dust removal devices of iron-making blast furnace roof tank, the opposite sides outer surface of flue gas dust removal tank 5 is respectively fixedly connected with air outlet pipe 8 and air inlet cover 4, one end of air inlet cover 4 is fixedly connected with air inlet pipe 3, the top of flue gas dust removal tank 5 is provided with tank cover 6, the bottom central position of flue gas dust removal tank 5 is fixedly installed with driving motor 18, driving motor 18 is fixedly connected with connecting block 16 that penetrates the bottom of flue gas dust removal tank 5, connecting block 16 is sleeved with connecting sleeve 17 outside, connecting sleeve 17 is fixedly installed with filter screen barrel 10, the lower surface of tank cover 6 is provided with annular groove 14, filter screen barrel 10 is matched with annular groove 14, when blast furnace iron-making operation, the flue gas needing to be dusted enters flue gas dust removal tank 5 from air inlet pipe 3 through air inlet cover 4, under the action of driving motor 18, connecting block 16 is fixedly connected with driving motor 18, will rotate together with driving motor 18, to drive connecting sleeve 17, filter screen barrel 10 together with connecting sleeve 17 do rotary motion, filter screen barrel 10 constantly rotates, filter screen barrel 10 of air inlet 3 and air inlet cover 4 opposite constantly changes position, reaches the purpose of flue gas dust removal.

[0020] The inner walls of the flue gas dust collector 5 on the other two opposite sides are provided with concave connecting grooves 11. A convex connecting plate 12 is inserted into the connecting groove 11. The connecting groove 11 and the convex connecting plate 12 are matched. A cleaning brush 9 is provided on the connecting plate 12. The bristles of the cleaning brush 9 are in contact with the outer surface of the filter screen barrel 10. The filter screen barrel 10 rotates continuously under the action of the drive motor 18. The cleaning brush 9 in contact with the filter screen barrel 10 cleans the dust on the outside of the filter screen barrel 10, so as to avoid the accumulation of dust on the outer surface of the filter screen barrel 10 and blockage. After the dust removal operation is completed, the cleaning brush 9 can be pulled up. The cleaning brush 9 and the connecting plate 12 can be removed from the inner wall of the flue gas dust collector 5 together, so as to facilitate the replacement and cleaning of the cleaning brush 9 by the operators.

[0021] An electric telescopic rod 7 is fixedly installed in the center of the upper surface of the cover 6. The telescopic end of the electric telescopic rod 7 passes through the cover 6 and is fixedly connected to a scraper 15. The scraper 15 is located on the inner wall of the filter screen barrel 10, and the edge of the scraper 15 contacts the filter screen barrel 10. The scraper 15 connected to the electric telescopic rod 7 moves up and down to scrape off the dust on the inner wall of the filter screen barrel 10, so as to avoid the accumulation of dust and blockage on the inner wall of the filter screen barrel 10, reduce the cleaning frequency of the filter screen barrel 10, and thus improve the dust removal efficiency of the filter screen barrel.

[0022] The bottom of the flue gas dust collector 5 is fixedly connected to the ash discharge hopper 2. The outlet of the ash discharge hopper 2 is hinged to the baffle 13. After the blast furnace ironmaking operation is completed, the baffle 13 is opened and the dust is centrally treated from the ash discharge hopper 2.

[0023] The four corners of the lower surface of the flue gas dust collector 5 are provided with support legs 1, and the ends of the support legs 1 are fixedly installed with anti-slip pads to effectively prevent the flue gas dust collector 5 from sliding sideways due to machine vibration during the blast furnace ironmaking process.

[0024] Before blast furnace ironmaking operations are required, the flue gas dust removal equipment is turned on. The drive motor 18 and the electric telescopic rod 7 are turned on to allow the filter screen barrel 10 and scraper 15 to move. Then, the blast furnace ironmaking operation is started. The flue gas that needs dust removal during the operation enters through the inlet pipe 3. After the flue gas is dusted by the filter screen barrel 10, the dusted flue gas is discharged from the outlet pipe 8 and collected. After the blast furnace ironmaking operation is completed, the drive motor 18 and the electric telescopic rod 7 are turned off, the baffle 13 is opened, and the swept dust is collected from the ash discharge hopper 2.

[0025] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A blast furnace top bin emission gas dedusting device for ironmaking blast furnace, comprising an emission gas dedusting box (5), characterized in that: The top of the flue gas dust removal tank (5) is provided with a tank cover (6), the bottom central position of the flue gas dust removal tank (5) is fixedly installed with a driving motor (18), the telescopic end of the driving motor (18) penetrates the bottom of the flue gas dust removal tank (5) and is fixedly connected with a connecting block (16), the outer side of the connecting block (16) is sleeved with a connecting sleeve (17), the connecting sleeve (17) is fixedly installed with a filter screen barrel (10), the lower surface of the tank cover (6) is provided with an annular groove (14), the filter screen barrel (10) is matched with the annular groove (14), the inner walls of the opposite sides of the flue gas dust removal tank (5) are provided with recessed connecting grooves (11), the recessed connecting grooves (11) are inserted with protruding connecting plates (12), the recessed connecting grooves (11) are matched with the protruding connecting plates (12), the connecting plates (12) are provided with dust cleaning brushes (9), the bristles of the dust cleaning brushes (9) are in contact with the filter screen barrel (10).

2. A device for dedusting fumes emitted from a top bin of a blast furnace for ironmaking according to claim 1, characterized in that, The upper surface of the tank cover (6) is fixedly installed with an electric telescopic rod (7), the telescopic end of the electric telescopic rod (7) penetrates the tank cover (6) and is fixedly connected with a scraper (15), the edge of the scraper (15) is in contact with the inner wall of the filter screen barrel (10).

3. A device for dust removal of flue gas emitted from a top charging hopper of a blast furnace for iron making according to claim 1, characterized in that, The outer surfaces of the opposite sides of the flue gas dust removal tank (5) are respectively fixedly connected with an air outlet pipe (8) and an air inlet cover (4), one end of the air inlet cover (4) is fixedly connected with an air inlet pipe (3), the positions of the connecting grooves (11), the air outlet pipe (8) and the air inlet cover (4) are opposite, the bottom of the flue gas dust removal tank (5) is fixedly connected with an ash discharge hopper (2), the discharge outlet of the ash discharge hopper (2) is hingedly connected with a baffle (13).

4. The device according to claim 1, characterized in that, The lower surface of the flue gas dust removal tank (5) is provided with four supporting legs (1), the end portions of the supporting legs (1) are fixedly installed with anti-skid pads.

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