Gravity dust removing and discharging device for blast furnace

Abstract

The utility model belongs to the technical field of steel smelting, and particularly relates to a blast furnace gravitational dust removal and ash discharge device which comprises a gravitational dust removal device, a first ash discharge bin and a second ash discharge bin which are symmetrically distributed are arranged at the bottom of the gravitational dust removal device, and the gravitational dust removal device is respectively connected with the first ash discharge bin and the second ash discharge bin through a first pipeline. The top of the first ash discharge bin is connected with the dust remover through a second pipeline, the top of the second ash discharge bin is communicated with the second pipeline through a third pipeline, the second pipeline and the third pipeline are both provided with blow-off ball valves, the first ash discharge bin is connected with the suction and exhaust vehicle through a fourth pipeline, and the second ash discharge bin is communicated with the fourth pipeline through a fifth pipeline; the dust remover is communicated with the fourth pipeline through a sixth pipeline; the whole operation process is simple and convenient; dust raising is avoided in the operation process, and the environment is protected; the labor intensity of workers is reduced; the ash discharging time is saved, and the human resource cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel smelting, and in particular relates to a blast furnace gravity dust removal and ash unloading device. Background Art

[0002] During the ironmaking process, one of the byproducts is blast furnace gas, which needs to be purified and dust-removed before it can be used by users. In the initial dust removal process of blast furnace gas, a gravity dust collector is generally used. The characteristic of this dust collector is that an ash unloading device needs to be set at the bottom of the ash bin of the dust collector.

[0003] There are two ash discharge ports directly below the ash hopper of the existing blast furnace gravity dust collector. Each ash discharge port is connected to two electric semi-ball valves, a humidifier, and an ash truck. The operation is cumbersome. Due to the long humidification time, the dust ash may become compacted, the discharge port is not smooth, and the discharge port needs to be cleaned manually. In addition, the existing blast furnace gravity dust collector uses a humidifier to discharge ash. The humidified dust ash needs to be transported back to the material yard for batching, which is not conducive to the batching of the next process. In addition, the dust ash participates in the batching cycle again for a long time. While unloading under pressure, it is easy to cause dust pollution in the working environment below the dust collector. Utility Model Content

[0004] The utility model aims to provide a blast furnace gravity dust removal and ash discharging device.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a blast furnace gravity dust removal and ash unloading device, including gravity dust removal, a first row of ash bins and a second row of ash bins are symmetrically distributed at the bottom of the gravity dust removal, the gravity dust removal is respectively connected to the first row of ash bins and the second row of ash bins through a first pipe, the top of the first row of ash bins is connected to the dust collector through the second pipe, the top of the second row of ash bins is connected to the second pipe through a third pipe, the second pipe and the third pipe are both provided with a release ball valve, the first row of ash bins is connected to a suction and discharge vehicle through a fourth pipe, the second row of ash bins is connected to the fourth pipe through a fifth pipe, and the dust collector is connected to the fourth pipe through a sixth pipe.

[0006] Specifically, an upper ash discharge ball valve and a lower ash discharge ball valve are provided on the first pipeline.

[0007] Specifically, the fourth pipeline, the fifth pipeline and the sixth pipeline are all provided with ash suction ball valves.

[0008] Specifically, the suction and exhaust vehicle is connected to the fourth pipeline through a dust suction hose.

[0009] The utility model has the following beneficial effects:

[0010] 1) The whole operation process is simple and convenient;

[0011] 2) Eliminate dust during operation and protect the environment;

[0012] 3) Reduce the labor intensity of employees;

[0013] 4) Save ash unloading time and reduce human resource costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] In the figure: 1- gravity dust removal; 2- ash discharge upper ball valve; 3- ash discharge lower ball valve; 4- release ball valve; 5- ash suction ball valve; 6- first row ash bin; 7- dust collector; 8- ash suction hose; 9- suction and discharge vehicle; 10- second row ash bin. DETAILED DESCRIPTION

[0016] The utility model will now be further described in detail with reference to the accompanying drawings.

[0017] like Figure 1 As shown, a blast furnace gravity dust removal and ash unloading device includes a gravity dust collector 1. A first row of ash bins 6 and a second row of ash bins 10 are symmetrically distributed at the bottom of the gravity dust collector 1. The gravity dust collector 1 is connected to the first row of ash bins 6 and the second row of ash bins 10 respectively through a first pipe, the top of the first row of ash bins 6 is connected to the dust collector 7 through a second pipe, the top of the second row of ash bins 10 is connected to the second pipe through a third pipe, and a discharge ball valve 4 is provided on the second pipe and the third pipe. The first row of ash bins is connected to the suction and discharge vehicle 9 through a fourth pipe, the second row of ash bins 10 is connected to the fourth pipe through a fifth pipe, and the dust collector 7 is connected to the fourth pipe through a sixth pipe.

[0018] An upper ash discharge ball valve 2 and a lower ash discharge ball valve 3 are provided on the first pipeline, and ash suction ball valves 5 are provided on the fourth pipeline, the fifth pipeline and the sixth pipeline. The suction and discharge vehicle 9 is connected to the fourth pipeline through an ash suction hose 8.

[0019] The use method of the utility model is as follows: after the blast furnace gas is filtered by the gravity dust collector 1, the ash discharge upper ball valve 2 and the ash discharge lower ball valve 3 are opened, and the gravity dust collection ash is discharged into the first ash bin 6 and the second ash bin 10 through the ash discharge upper ball valve 2 and the ash discharge lower ball valve 3, the ash discharge upper ball valve 2 and the ash discharge lower ball valve 3 are closed, and the release ball valve 4 is gradually opened, and the pressure in the first ash bin 6 and the second ash bin 10 is gradually discharged into the dust collector 7 through the release ball valve 4, and then the release ball valve is closed.

[0020] Repeat this step 1-2 times to fill the first row ash bin 6 and the second row ash bin 10, direct the suction and discharge vehicle 9 to enter the designated position, connect the ash suction hose 8, the suction and discharge vehicle 9 starts to suck ash, open the ash suction ball valve 5 of the first row ash bin 6, until the first row ash bin 6 is emptied, and then open the ash suction ball valve 5 of the second row ash bin 10. After the first row ash bin 6 and the second row ash bin 10 and the dust collector 7 are all emptied, if the suction and discharge vehicle 9 is not full, repeat the above ash discharge operation, and continue to suck ash after the first row ash bin 6 and the second row ash bin 10 are filled with ash until the suction and discharge vehicle 9 is full.

[0021] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A blast furnace gravity dust removal and ash discharging device, characterized in that: The invention comprises gravity dust collector, wherein a first row of ash bins and a second row of ash bins are symmetrically distributed at the bottom, the gravity dust collector is respectively connected to the first row of ash bins and the second row of ash bins through a first pipe, the top of the first row of ash bins is connected to the dust collector through a second pipe, the top of the second row of ash bins is connected to the second pipe through a third pipe, the second pipe and the third pipe are both provided with a discharge ball valve, the first row of ash bins is connected to the suction and discharge vehicle through a fourth pipe, the second row of ash bins is connected to the fourth pipe through a fifth pipe, and the dust collector is connected to the fourth pipe through a sixth pipe.

2. A blast furnace gravity dust removal and ash removal device according to claim 1, characterized in that: An upper ash discharge ball valve and a lower ash discharge ball valve are arranged on the first pipeline.

3. A blast furnace gravity dust removal and ash removal device according to claim 1, characterized in that: The fourth pipeline, the fifth pipeline and the sixth pipeline are all provided with ash suction ball valves.

4. A blast furnace gravity dust removal and ash removal device according to claim 1, characterized in that: The suction and exhaust vehicle is connected to the fourth pipeline through a dust suction hose.

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