Dust removing device for blast furnace
Technical Field
The utility model relates to the technical field of blast furnace dust removal, in particular to a blast furnace dust removal device.
Background
A blast furnace is an iron-making device, and a large amount of soot is generated in the iron-making process, and the environment is polluted when the soot is directly discharged, so that when the soot is discharged, the blast furnace generally filters dust in the soot through a dust removing device.
The prior Chinese patent publication No. CN114534387A discloses a blast furnace flue gas dust removal device, which comprises a dust removal box, an exhaust box and a blast furnace dust removal part, wherein the blast furnace dust removal part comprises a first positioning plate, a plurality of cloth bags, a plurality of blowing pipes, a first air supply pipeline, a plurality of third connecting rods and a plurality of gear components, the first positioning plate is provided with a plurality of first ventilation holes, each cloth bag is arranged at the lower end of one first ventilation hole, the third connecting rod can rotate to be communicated with the blowing pipes on a vertical plane, and the plurality of gear components are configured to enable the third connecting rods to rotate to be communicated with the blowing pipes on the vertical plane.
This technical scheme is mainly filtered the dust in the blast furnace flue gas through filtering the sack to can also clear up the dust of adhesion on filtering the sack voluntarily, in order to guarantee the gas permeability of filtering the sack, the dust that drops from the sack can fall in the ash bucket of dust removal case bottom, and when the dust in the ash bucket is full, just need open the ash bucket and discharge the dust, and when opening the ash bucket, in order to avoid blast furnace flue gas leakage, just need close the dust removal case earlier, this makes the in-process dust removal case at the clearance dust can't assist the blast furnace to carry out dust removal work, and is comparatively inconvenient.
Disclosure of utility model
The utility model aims to provide a blast furnace dust removal device which can remove dust from blast furnace flue gas without closing a dust removal box when dust is removed.
In order to achieve the above object, the technical scheme of the present utility model is as follows:
The utility model provides a blast furnace dust collector, includes the dust removal case, bottom one side of dust removal case is connected with the intake pipe, top one side of dust removal case is connected with the blast pipe, dust blocking assembly, filter screen and spraying mechanism have been set gradually from down in the dust removal case, dust blocking assembly includes a plurality of lightning type dust boards that set up side by side, lightning type dust board fixed connection is in on the dust removal case inside wall, the waste collection box is installed to the bottom of dust removal case, the bottom of waste collection box is connected with the fluid-discharge tube, be provided with the on-off valve on the fluid-discharge tube.
Further, the spraying mechanism comprises a spraying plate arranged at the top of the inner side of the dust removal box, a cavity is formed in the spraying plate, a plurality of spraying heads communicated with the cavity are arranged at the bottom of the spraying plate, and the top of the spraying plate is connected with a liquid injection pipe.
Further, a secondary dust plate is arranged on the lightning type dust plate.
Further, the air inlet pipe is of a funnel-shaped structure, and the inner diameter of the air inlet pipe is larger when the inner diameter of the air inlet pipe is closer to the dust removal box.
Further, a transparent observation window is arranged on the waste collection box.
Compared with the prior art, the utility model has the beneficial effects that:
The blast furnace flue gas passes through the intake pipe and gets into the dust removal incasement, blocks the smoke and dust in the air to continue to rise through gravity and lightning formula dust board, and the smoke and dust falls to the dust removal bottom of the case portion about gravity, further filters the air through the filter screen, sprays the dust removal through spraying mechanism, and the incidental dust of spun water gathers in the waste collection box, discharges the waste liquid through the fluid-discharge tube to together discharge the dust, can remove dust to the blast furnace flue gas simultaneously, need not to close the dust removal case.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
1. The device comprises a dust removal box, an air inlet pipe, an air outlet pipe, a filter screen, a lightning type dust baffle, a secondary dust baffle, a waste collection box, a liquid discharge pipe, an on-off valve, a spray plate, a spray header, a liquid injection pipe and a dust collection box.
Detailed Description
As shown in fig. 1, a blast furnace dust collector, including dust removal case 1, bottom one side of dust removal case 1 is connected with intake pipe 2, top one side of dust removal case 1 is connected with blast pipe 3, dust blocking component, filter screen 4 and spraying mechanism have been set gradually from down upwards in the dust removal case 1, dust blocking component includes a plurality of lightning type dust boards 5 that set up side by side, lightning type dust board 5 fixed connection is in on the dust removal case 1 inside wall, waste collection box 6 is installed to the bottom of dust removal case 1, waste collection box 6's bottom is connected with fluid-discharge tube 7, be provided with on-off valve 8 on the fluid-discharge tube 7.
The spraying mechanism comprises a spraying plate 9 arranged at the top of the inner side of the dust removal box 1, a cavity is formed in the spraying plate 9, a plurality of spraying heads 10 communicated with the cavity are arranged at the bottom of the spraying plate 9, the top of the spraying plate 9 is connected with a liquid injection pipe 11, and the liquid injection pipe 11 is connected with an external water source.
The lightning type dust board 5 is provided with a secondary dust board 51, and dust in the air is further prevented from moving upwards by the secondary dust board 51.
The air inlet pipe 2 is of a funnel-shaped structure, the inner diameter of the air inlet pipe 2 is larger as the inner diameter of the air inlet pipe 2 is closer to the dust removal box 1, and the air inlet pipe 2 is of a funnel-shaped structure, so that the flow speed of smoke dust is reduced, and dust in the smoke dust is easier to deposit under the action of gravity.
The waste collection box 6 is provided with a transparent observation window, and the transparent observation window is arranged to facilitate the observation of the condition of waste liquid in the waste collection box 6, firstly, the waste liquid in the waste collection box 6 is prevented from being excessive, and secondly, the on-off valve 8 can be closed in time when the waste liquid is about to be discharged, so that the leakage of blast furnace flue gas from the liquid discharge pipe 7 is prevented.
The working principle is that the blast furnace flue gas enters the dust removing box 1 through the air inlet pipe 2, smoke dust in the air is prevented from continuously rising through the lightning type dust baffle 5 and the secondary dust baffle 51, the smoke dust falls to the bottom of the dust removing box 1 from left to right, the air is further filtered through the filter screen 4, liquid is sprayed through the spray header 10 to remove dust, the sprayed water is collected in the waste collecting box 6 together with dust, waste liquid is discharged through the liquid discharge pipe 7, and therefore the dust is discharged together, and meanwhile, the blast furnace flue gas can be removed without closing the dust removing box.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.