CN217025991U - Blast furnace top pressure-equalizing bleeding gas recovery device - Google Patents

Abstract

The utility model discloses a recovery device for pressure-equalizing diffused gas at the top of a blast furnace, which comprises a base, a flow guide box, a filter box and a storage box, wherein an air inlet pipe is arranged on one side of the flow guide box, which is far away from the filter box; an exhaust pipe is arranged on one side of the storage box, which is far away from the filter box; a plurality of guide plates are arranged in the guide box; the top of rose box is provided with feed pipe and driving motor for the inside stirring leaf of drive rose box rotates. In the utility model, when the coal gas is guided into the flow guide box, the coal gas is firstly guided by the plurality of flow guide plates, so that the leakage of the coal gas backflow is avoided, the temperature of the blast furnace gas is reduced, continuous bubbles are generated in the internal stock solution of the filter box through the pressurization of the coal gas, dust particles in the coal gas are filtered in a bubble oscillation mode, the use is convenient, the filtering efficiency is high, the pollution is not easily caused, and the practicability is good.

Description

Blast furnace top pressure-equalizing bleeding gas recovery device

Technical Field

The utility model relates to the technical field of blast furnace gas recovery, in particular to a blast furnace top pressure-equalizing bleeding gas recovery device.

Background

The blast furnace uses steel plate as furnace shell, and refractory brick lining is built in the shell. The blast furnace body is divided into a furnace throat, a furnace body, a furnace waist, a furnace belly and a furnace hearth from top to bottom, and oxygen in iron ore is removed in the ascending process in the furnace, so that iron is obtained through reduction. The smelted molten iron is discharged from the taphole, unreduced impurities in the iron ore are combined with a flux such as limestone to generate slag, the slag is discharged from the taphole, and generated gas is discharged from the top of the furnace and is dedusted to be used as fuel for hot blast furnaces, heating furnaces, coke ovens, boilers and the like. The main product of blast furnace smelting is pig iron, and the byproducts of blast furnace slag and blast furnace gas are also produced.

However, in practical use, a large amount of dust particles are remained in coal gas generated by furnace top pressure equalization in the existing blast furnace during iron making, most of the traditional filtering modes are to filter dust in the coal gas by using a filter screen and then store the coal gas, but when the coal gas is filtered, the coal gas can return air due to air pressure, so that the filter screen is more easily blocked, and a lot of inconvenience is brought to workers.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model discloses a pressure-equalizing diffused gas recovery device at the top of a blast furnace, which aims to solve the problems in the background art.

The technical scheme adopted by the utility model is as follows: a pressure-equalizing diffused gas recovery device at the top of a blast furnace comprises a base, wherein a flow guide box, a filter box and a storage box are arranged on the base, an air inlet pipe is arranged on one side, away from the filter box, of the flow guide box, and the flow guide box, the filter box and the storage box are sequentially connected through connecting pipes; an exhaust pipe is arranged on one side of the storage box, which is far away from the filter box; a plurality of guide plates are arranged in the guide box; the top of rose box is provided with feed pipe and CD-ROM drive motor for the inside stirring leaf of drive rose box rotates.

Furthermore, a limiting cylinder is fixedly arranged at the bottom of the inner wall of the filter box, and a rotating shaft is arranged at the output end of the driving motor; the rotating shaft penetrates through the filter box and is matched with the limiting cylinder; the surface of the rotating shaft is fixedly provided with a plurality of connecting rings, and the two sides of the surface of each connecting ring are provided with stirring blades.

Furthermore, a plurality of the surface of stirring leaf all runs through and has seted up the transition hole, the downthehole fixed transition strip that is provided with of transition, the floor of base is provided with the fluid-discharge tube, the one end of fluid-discharge tube runs through the base to be linked together with the rose box.

The utility model has the following beneficial effects:

1. this gas recovery unit is diffused in blast furnace roof voltage-sharing is through being provided with dust removal filtering mechanism, when coal gas is leading-in to the flow guide box in, can be at first through the water conservancy diversion of a plurality of guide plates, avoid the coal gas backward flow to reveal, can cool down blast furnace gas simultaneously, continuously gush in through coal gas, coal gas can go on in the rose box through first connecting pipe, pressurization through coal gas, can produce continuous bubble in the inside stoste of rose box, it filters to get the dust granule in the gas with the mode that the bubble vibrates, when convenient to use, the filtration efficiency is high, and be difficult for causing the pollution, and has good practicality.

2. This gas recovery unit is diffused in blast furnace roof voltage-sharing is through being provided with the stirring leaf, the axis of rotation, transition hole and transition strip, when a plurality of stirring leaves carried out rotary displacement along the axle center point of axis of rotation, can stir the stock solution of rose box inside, make because the connection bubble that the coal gas gushed into and produced can disperse to the microbubble, make in the coal gas to obtain the dust granule and can deposit in the bottom of rose box, the effect of water conservancy diversion can be played with mutually supporting of transition strip in the transition hole, increase the stirring efficiency of the inside stock solution of rose box, further increase the filtration efficiency of coal gas.

Drawings

FIG. 1 is a front view of a draft box, a filter box and a storage box of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a schematic view of a portion of the structure of FIG. 2 at A;

in the figure: 1. a base; 2. a flow guide box; 3. a filter box; 4. a storage box; 5. an air inlet pipe; 6. a drive motor; 7. a feed pipe; 8. an exhaust pipe; 9. a baffle; 10. a first connecting pipe; 11. a limiting cylinder; 12. a rotating shaft; 13. a connecting ring; 14. stirring blades; 15. a transition hole; 16. a transition strip; 17. a second connecting pipe; 18. and a liquid discharge pipe.

Detailed Description

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

As shown in figures 1 and 2, the utility model relates to a pressure-equalizing diffused gas recovery device at the top of a blast furnace, which comprises a base 1, wherein the top of the base 1 is provided with a flow guide box 2, one side of the flow guide box 2 is provided with a filter box 3, and a dust removal filter mechanism is arranged between the flow guide box 2 and the filter box 3; the dust removal filtering mechanism comprises a plurality of guide plates 9, and the guide plates 9 are all fixedly arranged in the guide box 2. The top surface of the filter box 3 is provided with a driving motor 6, the bottom of the inner wall of the filter box 3 is fixedly provided with a limiting cylinder 11, and the output end of the driving motor 6 is provided with a rotating shaft 12.

As shown in fig. 2 and 3, the rotating shaft 12 is matched with the limiting cylinder 11, one end of the rotating shaft 12 penetrates through the filter box 3 and extends to the middle of the limiting cylinder 11, a plurality of connecting rings 13 are fixedly arranged on the surface of the rotating shaft 12, and stirring blades 14 are arranged on two sides of the surface of each of the connecting rings 13. Spacing section of thick bamboo 11 can play spacing effect, increases axis of rotation 12 stability when rotating, and axis of rotation 12 when rotating, can drive a plurality of stirring leaves 14 and carry out rotary displacement along the axle center point of axis of rotation 12, increases the efficiency of bubble diffusion.

As shown in fig. 2 and 3, transition holes 15 are formed in the surfaces of the stirring blades 14 in a penetrating manner, transition strips 16 are fixedly arranged in the transition holes 15, a liquid discharge pipe 18 is arranged on the floor of the base 1, one end of the liquid discharge pipe 18 penetrates through the base 1 and is communicated with the filter box 3, the transition holes 15 and the transition strips 16 are matched with each other to play a role in guiding flow, the stirring efficiency of the stock solution in the filter box 3 is increased, the liquid discharge pipe 18 can play a role in discharging, and the stock solution after being used is discharged conveniently.

One side of rose box 3 is provided with storage tank 4, and the bottom of storage tank 4 is fixed to be set up on base 1, is provided with first connecting pipe 10 between water conservancy diversion case 2 and the rose box 3, is provided with second connecting pipe 17 between rose box 3 and the storage tank 4, and storage tank 4 can play the effect of storage, and the gaseous storage after being convenient for filter and accomplishing is in storage tank 4.

The two ends of the first connecting pipe 10 are respectively communicated with the filter tank 3 and the flow guide tank 2, the two ends of the second connecting pipe 17 are respectively communicated with the filter tank 3 and the storage tank 4, and the first connecting pipe 10 and the second connecting pipe 17 can play a role in flow guide, so that the airflow surging and the use are facilitated.

One side of rose box 3 is kept away from to flow guide box 2 is provided with intake pipe 5, the top of rose box 3 is provided with feed pipe 7, one side of rose box 3 is kept away from to storage box 4 is provided with blast pipe 8, intake pipe 5 is linked together with flow guide box 2, feed pipe 7 is linked together with rose box 3, blast pipe 8 is linked together with storage box 4, intake pipe 5 is convenient for coal gas directly to enter into flow guide box 2, and feed pipe 7 is convenient for the staff to add the stoste, and blast pipe 8 is convenient for discharge the coal gas after the completion of filtering.

When the utility model is used, the utility model is firstly arranged at a designated position, so that blast furnace gas can be guided into the flow guide box 2 through the air inlet pipe 5, when the gas is guided into the flow guide box 2, the gas is firstly guided by the guide plates 9 to avoid gas backflow and leakage, and simultaneously the temperature of the blast furnace gas can be reduced, the gas continuously gushes in through the gas, the gas can be conveyed into the filter box 3 through the first connecting pipe 10, continuous bubbles can be generated in the stock solution in the filter box 3 through pressurization of the gas, then the driving motor 6 is started to drive the rotating shaft 12 to rotate, and simultaneously the stirring blades 14 can rotate and displace along the axial center point of the rotating shaft 12 to stir the stock solution in the filter box 3, so that the connecting bubbles generated due to the gas gushing in can be dispersed into small bubbles, and dust particles in the gas can be precipitated at the bottom of the filter box 3, the stock solution in the filter box 3 is not easy to flow back to the inside of the guide box 2 through the design of the guide box 2, and the filtered coal gas can flow into the storage box 4 through the second connecting pipe 17 to finish the collection of the coal gas.

The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (3)

1. The utility model provides a blast furnace top voltage-sharing diffuses coal gas recovery unit, includes the base, its characterized in that: the base is provided with a flow guide box, a filter box and a storage box, one side of the flow guide box, which is far away from the filter box, is provided with an air inlet pipe, and the flow guide box, the filter box and the storage box are sequentially connected through a connecting pipe; an exhaust pipe is arranged on one side of the storage box, which is far away from the filter box; a plurality of guide plates are arranged in the guide box; the top of rose box is provided with feed pipe and CD-ROM drive motor for the inside stirring leaf of drive rose box rotates.

2. The blast furnace top pressure equalizing and bleeding gas recovery device according to claim 1, characterized in that: the bottom of the inner wall of the filter box is fixedly provided with a limiting cylinder, and the output end of the driving motor is provided with a rotating shaft; the rotating shaft penetrates through the filter box and is matched with the limiting cylinder; the surface of the rotating shaft is fixedly provided with a plurality of connecting rings, and stirring blades are arranged on two sides of the surface of the connecting rings.

3. The blast furnace top pressure equalizing and bleeding gas recovery device according to claim 1, characterized in that: the surface of a plurality of stirring leaves all runs through and has seted up the transition hole, the downthehole fixed transition strip that is provided with of transition, the floor of base is provided with the fluid-discharge tube, the one end of fluid-discharge tube runs through the base to be linked together with the rose box.

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