CN219879379U

CN219879379U - Oxygen-enriched dry gas supply device suitable for blast furnace ironmaking smelting process

Info

Publication number: CN219879379U
Application number: CN202321096621.5U
Authority: CN
Inventors: 李传振
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-05-09
Filing date: 2023-05-09
Publication date: 2023-10-24
Anticipated expiration: 2033-05-09

Abstract

The utility model provides an oxygen-enriched dry gas supply device which is suitable for a blast furnace ironmaking and smelting process. The oxygen-enriched dry gas supply device suitable for the blast furnace ironmaking smelting process comprises a supporting table, a filter box and a drying box, wherein the filter box and the drying box are arranged above the supporting table, the tops of the filter box and the drying box are both provided with openings, one side of the filter box, which is far away from the drying box, is fixedly provided with an air inlet pipe, one side of the drying box, which is far away from the filter box, is fixedly provided with an air duct, the top of the supporting table is fixedly provided with a blower, an air inlet of the blower is fixedly connected with the filter box, and an air outlet of the blower is fixedly connected with the drying box. The oxygen-enriched dry gas supply device which is suitable for the blast furnace ironmaking smelting process has the advantages of ensuring the filtering performance and the air inlet quantity and reducing the adverse effect on the blast furnace ironmaking.

Description

Oxygen-enriched dry gas supply device suitable for blast furnace ironmaking smelting process

Technical Field

The utility model relates to the technical field of oxygen supply, in particular to an oxygen-enriched dry gas supply device which is suitable for a blast furnace ironmaking smelting process.

Background

In the smelting process of blast furnace ironmaking, in order to improve smelting intensity to increase the yield of the blast furnace and strengthen the combustion of injected fuel in front of a tuyere, industrial oxygen is filled into the blast furnace through a blower, so that the oxygen content of the blast furnace exceeds the atmospheric content, and meanwhile, in order to prevent the adverse effect of excessive moisture in the air on the ironmaking, the air is dried during the blowing, so that a sufficient amount of oxygen-enriched dry gas can be supplied into the blast furnace.

In the prior art, patent document with the authority of CN211170720U proposes an oxygen-enriched dry gas supply device suitable for an iron-making process. The oxygen-enriched dry gas supply device suitable for the iron-making process comprises a separation box; the air inlet is formed in the inner wall of one side of the separation box; the net cover is fixedly arranged on one side of the separation box and is matched with the air inlet; the air outlet pipe is fixedly arranged at one side of the separation box, which is far away from the mesh enclosure; the air blower is fixedly arranged at the air outlet end of the air outlet pipe; the film-coating plate is fixedly arranged on the inner wall of the separation box; the first through hole is formed in the film-coated plate; the two adsorption films are respectively arranged on two sides of the film-coating plate. Although the oxygen-enriched dry gas supply device suitable for the ironmaking process has the advantages of convenient use and capability of pre-adsorbing water and gas.

However, said utility model is found in practice that the net cover on said net cover can block its net holes in long-term use, so that it not only can make filtering property be low, but also can reduce air inlet quantity, so that it can reduce the production of oxygen-enriched dry gas, and is not beneficial to normal iron-making operation of blast furnace.

Therefore, it is necessary to provide a new oxygen-enriched dry gas supply device which is suitable for the blast furnace ironmaking smelting process to solve the technical problems.

Disclosure of Invention

The utility model solves the technical problem of providing the oxygen-enriched dry gas supply device which is suitable for the blast furnace ironmaking smelting process and can ensure the filtering performance and the air intake and reduce the adverse effect on the blast furnace ironmaking.

In order to solve the technical problems, the oxygen-enriched dry gas supply device suitable for the blast furnace ironmaking smelting process provided by the utility model comprises: the filter comprises a supporting table, and a filter box and a drying box which are arranged above the supporting table, wherein the tops of the filter box and the drying box are respectively provided with an opening, the filter box is far away from an air inlet pipe, the drying box is far away from an air guide pipe which is fixedly arranged on one side of the filter box, a blower is fixedly arranged on the top of the supporting table, an air inlet of the blower is fixedly connected with the filter box, an air outlet of the blower is fixedly connected with the drying box, a cover plate I and a cover plate II are respectively and fixedly arranged on the top of the filter box and the top of the drying box through bolts, a first-stage filter plate and a second-stage filter plate are respectively and slidably arranged in the filter box, the tops of the first-stage filter plate and the second-stage filter plate are respectively contacted with the cover plate I, two connecting strips are respectively and rotatably arranged on the bottom of the cover plate I, two connecting strips are respectively and fixedly arranged on one ends of the rotating shafts, which are close to the blower, and the two filter plates are respectively contacted with the first-stage filter plate and the second-stage filter plate.

Preferably, the first cover plate is rotatably provided with two transmission rods, the bottom ends of the two transmission rods are fixedly provided with first bevel gears, one end of the rotating shaft is fixedly provided with second bevel gears, and the first bevel gears are meshed with the corresponding second bevel gears.

Preferably, two ash leakage openings are formed in the bottom of the filter box, an ash receiving box is fixedly arranged at the bottom of the filter box, a through opening is formed in the top of the ash receiving box, and the through opening is matched with the ash leakage openings.

Preferably, the bottom inner wall of the drying box and the bottom of the cover plate II are respectively fixedly provided with a plurality of first guide plates and a plurality of second guide plates, and the bottom inner wall of the drying box and the bottom of the cover plate II are respectively fixedly provided with two infrared drying lamps.

Preferably, four sliding grooves are formed in the inner wall of the filter box, sliding blocks are slidably mounted in the four sliding grooves, and the four sliding blocks are fixedly connected with the corresponding primary filter plate and the corresponding secondary filter plate.

Preferably, the bottom of the ash receiving box is fixedly provided with an ash discharge pipe, the bottom of the ash discharge pipe is provided with a rubber plug, one side of the supporting table is fixedly provided with a drainage groove, and the drainage groove is positioned below the ash discharge pipe.

Preferably, a motor is fixedly arranged at the top of the first cover plate, an output shaft of the motor is fixedly connected with the top ends of the corresponding transmission rods, synchronous wheels are fixedly sleeved on the two transmission rods, and the same synchronous belt is sleeved on the two synchronous wheels.

Compared with the related art, the oxygen-enriched dry gas supply device suitable for the blast furnace ironmaking smelting process has the following beneficial effects:

the utility model provides an oxygen-enriched dry gas supply device which is suitable for a blast furnace ironmaking smelting process, and can simultaneously scrape dust on a primary filter plate and a secondary filter plate in an air blowing process through the two scraping plates, so that impurity dust can be attached to the primary filter plate and the secondary filter plate, the filtering performance of the primary filter plate and the secondary filter plate can be ensured, the air inlet quantity is enough, and the moisture in the air can be eliminated through the drying of an infrared drying lamp, so that the water content in the air is reduced to the greatest extent, and the adverse effect on the blast furnace ironmaking is greatly reduced.

Drawings

FIG. 1 is a schematic diagram of an embodiment of an oxygen-enriched dry gas supply apparatus adapted to a blast furnace ironmaking process according to the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

FIG. 3 is a schematic diagram showing the connection structure of the filter box, the drying box and the blower in the present utility model;

FIG. 4 is a schematic view of the connection structure of the first, first and second filter plates of the cover plate of the present utility model;

fig. 5 is an enlarged schematic view of the portion a shown in fig. 4;

fig. 6 is a schematic diagram of a connection structure of a second cover plate, a second deflector and an infrared drying lamp in the present utility model.

Reference numerals in the drawings: 1. a support table; 2. a filter box; 3. a drying box; 4. an air inlet pipe; 5. an air duct; 6. a cover plate I; 7. a cover plate II; 8. a first-stage filter plate; 9. a second-stage filter plate; 10. a connecting strip; 11. a rotating shaft; 12. a transmission rod; 13. a first bevel gear; 14. a second bevel gear; 15. an ash leakage port; 16. an ash receiving box; 17. a blower; 18. a first deflector; 19. a second guide plate; 20. an infrared drying lamp; 21. a scraper.

Detailed Description

The utility model will be further described with reference to the drawings and embodiments.

Referring to fig. 1-6 in combination, fig. 1 is a schematic structural diagram of a preferred embodiment of an oxygen-enriched dry gas supply device adapted to a blast furnace ironmaking smelting process according to the present utility model; FIG. 2 is a schematic cross-sectional view of the present utility model; FIG. 3 is a schematic diagram showing the connection structure of the filter box, the drying box and the blower in the present utility model; FIG. 4 is a schematic view of the connection structure of the first, first and second filter plates of the cover plate of the present utility model; fig. 5 is an enlarged schematic view of the portion a shown in fig. 4; fig. 6 is a schematic diagram of a connection structure of a second cover plate, a second deflector and an infrared drying lamp in the present utility model. The oxygen-enriched dry gas supply device suitable for the blast furnace ironmaking smelting process comprises: the supporting bench 1, and set up filter cabinet 2 and drying cabinet 3 in supporting bench 1 top, and the top of filter cabinet 2 and drying cabinet 3 is all established to the opening, and one side that drying cabinet 3 was kept away from to filter cabinet 2 is fixed with intake pipe 4, one side that filter cabinet 2 was kept away from to drying cabinet 3 is fixed with air duct 5, air duct 5 and blast furnace intercommunication just so form the passageway, make oxygen-enriched dry gas can let in the blast furnace, and be fixed with air-blower 17 at the top of supporting bench 1, its air inlet and filter cabinet 2 fixed connection, gas outlet and drying cabinet 3 fixed connection, and all be fixed with apron one 6 and apron two 7 through the bolt at the top of filter cabinet 2 and the top of drying cabinet 3 respectively, so can block up the top opening of two, and filter cabinet 2 internally mounted with one-level filter plate 8 and second grade filter plate 9, the mesh number of one-level filter plate 8 is less than the mesh number of second grade filter plate 9, like this alright play layered filtering's effect, and the top of one-level filter plate 8 and second grade filter plate 9 all contacts with one 6, and the air that guarantees to inhale all can carry out filter plate 6, and two filter plate 8 are connected with two filter plates 21 and two filter plate 8 are connected with one-level filter plate 8 and two filter plate 11 respectively on the filter plate 11 are connected with two-level filter plate 11, two filter plate 11 are rotated, the one end is guaranteed to be had, the filter plate 21 is connected with two and two filter plate 11 is fixed to the pivot 21 is had on the filter plate 11 is one side and one side is just fixed to be had, the pivot is the top to be connected to the filter plate 11 is the filter 11 and the filter plate 11 is the filter stage is the filter stage the filter is the filter.

In the above manner, in order to drive the rotating shaft 11 to rotate, the scraper 21 can rotate and scrape ash, two transmission rods 12 are rotatably installed on the cover plate one 6, the first 13 of bevel teeth is fixed at the bottom ends of the two transmission rods, the second 14 of bevel teeth is fixed at one ends of the two rotating shafts 11, the first 13 of bevel teeth is meshed with the second 14 of corresponding bevel teeth, a motor is fixed at the top of the cover plate one 6, an output shaft of the motor is fixedly connected with the top end of the corresponding transmission rod 12, synchronous wheels are fixedly sleeved on the two transmission rods 12, and the same synchronous belt is sleeved on the two synchronous wheels, so that the two transmission rods 12 can simultaneously rotate under the transmission of the synchronous wheels and the synchronous belt through starting the motor.

In this mode, in order to concentrate the dust impurity that will scrape down and collect, two ash leakage mouths 15 have been seted up in the bottom of rose box 2, and the bottom of rose box 2 is fixed with and connects ash box 16, the opening has been seted up at its top, this opening corresponds from top to bottom with ash leakage mouths 15, thereby can make the dust impurity that scrapes down directly fall into and connect ash box 16, in addition, be fixed with the ash discharge pipe in the bottom that connects ash box 16, its bottom is equipped with the rubber buffer, and be fixed with the drainage groove in one side of brace table 1, this drainage groove is located the below of ash discharge pipe, separate it with ash discharge pipe through pulling out the rubber buffer, just make the dust in the ash collection box 16 concentrate the discharge.

In this way, in order to dry the filtered air, a plurality of first deflectors 18 and a plurality of second deflectors 19 which are distributed in a staggered manner are respectively fixed on the bottom inner wall of the drying box 3 and the bottom of the second cover plate 7, so that the entering air forms an S-shaped circulation path, the circulation path and the duration of the entering air in the drying box 3 are increased, and two infrared drying lamps 20 are fixed on the bottom inner wall of the drying box 3 and the bottom of the second cover plate 7, so that the air can be dried by using the infrared drying lamps 20.

In this mode, in order to be convenient in the later stage with the maintenance of removing one-level filter plate 8 and second grade filter plate 9 or change, seted up four spouts on the inner wall of rose box 2, all slidable mounting has the slider in four spouts, four sliders all with corresponding one-level filter plate 8 and second grade filter plate 9 fixed connection.

The working principle of the oxygen-enriched dry gas supply device which is suitable for the blast furnace ironmaking smelting process provided by the utility model is as follows:

when blowing, a plurality of infrared drying lamps 20 are started to preheat so as to raise the temperature in the drying box 3, then a blower 17 is started, negative pressure is formed in the filter box 2, external air enters the filter box 2 through the air inlet pipe 4, and after entering the filter box 2, the air is filtered by the first-stage filter plate 8 and then filtered by the second-stage filter plate 9, so that impurity particles carried in the air are filtered;

then, the filtered air enters the drying box 3 through the blower 17 and circulates in the drying box 3, and the infrared drying lamp 20 heats and dries the air in the circulation process, so that the water vapor in the air can be eliminated, the air after the water vapor is eliminated becomes oxygen-enriched dry air, and the oxygen-enriched dry air is discharged into a blast furnace through the air duct 5;

in the process of blowing, in order to ensure the filtering performance of the first-stage filter plate 8 and the second-stage filter plate 9 and enough air inlet quantity, the motor can be started, the output shaft of the motor drives the transmission rods 12 to rotate, then under the transmission of the synchronous wheel and the synchronous belt, the two transmission rods 12 start to rotate, and simultaneously, the two rotating shafts 11 can be driven to rotate under the meshing of the first bevel gear 13 and the second bevel gear 14, so that the two scraping plates 21 can be driven to rotate on the first-stage filter plate 8 and the second-stage filter plate 9, dust impurities attached to the scraping plates can be scraped off, then the dust impurities fall into the dust collecting box 16 through the dust leakage port 15, and the whole dust scraping process can be continuously carried out along with the progress of blowing until the blowing is completed;

after iron making is finished, a glove box is placed below the drainage groove, then a rubber plug at the bottom of the ash receiving box 16 is opened, and dust in the glove box is discharged in a concentrated mode.

the utility model provides an oxygen-enriched dry gas supply device which is suitable for a blast furnace ironmaking smelting process, and can simultaneously scrape dust on a primary filter plate 8 and a secondary filter plate 9 in an air blowing process through the two scraping plates 21, so that impurity dust is attached to the primary filter plate 8 and the secondary filter plate 9, the filtering performance of the primary filter plate and the secondary filter plate and the dust can be ensured, the sufficient air inlet quantity is ensured, and the moisture in the air can be eliminated through the drying of an infrared drying lamp 20, so that the water content in the air is reduced to the greatest extent, and the adverse effect on the blast furnace ironmaking is greatly reduced.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. The utility model provides an oxygen boosting dry gas supply device with blast furnace ironmaking smelting process adaptation, includes the brace table, and set up rose box and drying cabinet in the brace table top, just rose box and drying cabinet's top all is established to the opening, its characterized in that, the rose box keep away from one side fixed mounting of drying cabinet has the intake pipe, the drying cabinet is kept away from one side fixed mounting of rose box has the air duct, the top fixed mounting of brace table has the air-blower, the air inlet of air-blower with rose box fixed connection, the gas outlet of air-blower with drying cabinet fixed connection, the top of rose box and the top of drying cabinet are all through bolt fixed mounting respectively apron one and apron two, slidable mounting has one-level filter plate and second filter plate, one-level filter plate and second filter plate's top all with apron one-tenth contact, two connecting strips are all rotated on the connecting strip and are installed the pivot, two the pivot is close to one end of air-blower is all fixed mounting has the scraper blade, two scraper blade and second filter plate looks contact respectively.

2. The oxygen-enriched dry gas supply device suitable for the blast furnace ironmaking smelting process according to claim 1, wherein the cover plate I is rotatably provided with two transmission rods, the bottom ends of the two transmission rods are fixedly provided with first bevel teeth, one ends of the two rotating shafts are fixedly provided with second bevel teeth, and the first bevel teeth are meshed with the corresponding second bevel teeth.

3. The oxygen-enriched dry gas supply device suitable for the blast furnace ironmaking smelting process according to claim 1, wherein two ash leakage openings are formed in the bottom of the filter box, an ash receiving box is fixedly arranged at the bottom of the filter box, a through opening is formed in the top of the ash receiving box, and the through opening is matched with the ash leakage openings.

4. The oxygen-enriched dry gas supply device suitable for the blast furnace ironmaking smelting process according to claim 1, wherein a plurality of first guide plates and a plurality of second guide plates are fixedly arranged at the bottoms of the inner wall of the bottom of the drying box and the second cover plate respectively, and two infrared drying lamps are fixedly arranged at the bottoms of the inner wall of the bottom of the drying box and the second cover plate.

5. The oxygen-enriched dry gas supply device suitable for the blast furnace ironmaking smelting process according to claim 1, wherein four sliding grooves are formed in the inner wall of the filter box, sliding blocks are slidably arranged in the four sliding grooves, and the four sliding blocks are fixedly connected with the corresponding primary filter plate and the corresponding secondary filter plate.

6. The oxygen-enriched dry gas supply device suitable for the blast furnace ironmaking smelting process according to claim 3, wherein an ash discharge pipe is fixedly arranged at the bottom of the ash receiving box, a rubber plug is arranged at the bottom of the ash discharge pipe, a drainage groove is fixedly arranged at one side of the supporting table, and the drainage groove is positioned below the ash discharge pipe.

7. The oxygen-enriched dry gas supply device suitable for the blast furnace ironmaking smelting process according to claim 2, wherein a motor is fixedly arranged at the top of the first cover plate, an output shaft of the motor is fixedly connected with the top ends of the corresponding transmission rods, synchronous wheels are fixedly sleeved on the two transmission rods, and the same synchronous belt is sleeved on the two synchronous wheels.