CN220596366U - Pulverized coal conveying device of blast furnace - Google Patents
Pulverized coal conveying device of blast furnace Download PDFInfo
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- CN220596366U CN220596366U CN202322215152.0U CN202322215152U CN220596366U CN 220596366 U CN220596366 U CN 220596366U CN 202322215152 U CN202322215152 U CN 202322215152U CN 220596366 U CN220596366 U CN 220596366U
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- 239000003245 coal Substances 0.000 title claims abstract description 42
- 238000002156 mixing Methods 0.000 claims abstract description 31
- 238000007599 discharging Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 31
- 238000003756 stirring Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 7
- 230000009193 crawling Effects 0.000 claims description 3
- 239000002817 coal dust Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000000737 periodic effect Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 6
- 238000007664 blowing Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 230000008676 import Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 241000282326 Felis catus Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000013072 incoming material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004449 solid propellant Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Abstract
The utility model belongs to the technical field of blast furnace production, and particularly relates to a pulverized coal conveying device of a blast furnace. The utility model realizes the mass storage of coal dust, realizes the periodic feeding at intervals, meets the requirement of one-time feeding of one class, and reduces the continuous duty of personnel. Comprises a feeding unit, a feeding bin, a receiving unit, a quantitative bin, a horizontal pushing unit and a mixing chamber; the quantitative bin is positioned below the receiving unit, and the horizontal pushing unit is positioned below the quantitative bin; the top of the quantitative bin is provided with a first gate valve, and the bottom of the quantitative bin is provided with a second gate valve; the discharging port of the feeding unit is communicated with the inlet of the feeding bin, the outlet of the feeding bin is communicated with the inlet of the receiving unit, the outlet of the receiving unit is communicated with the inlet of the quantitative bin, the outlet of the quantitative bin is communicated with the inlet of the horizontal pushing unit, and the outlet of the horizontal pushing unit is communicated with the mixing chamber; the mixing chamber is communicated with a compressed air source for feeding.
Description
Technical Field
The utility model belongs to the technical field of blast furnace production, and particularly relates to a pulverized coal conveying device of a blast furnace.
Background
The fuel for blast furnace injection includes solid fuel, liquid fuel and gas fuel, wherein the injected solid fuel is mainly pulverized coal. The pulverized coal is conveyed pneumatically from the pulverized coal bin to a blowing tank at the blast furnace and from the blowing tank to a blast furnace tuyere.
The coal dust injected by the blast furnace has great influence on the smelting of the blast furnace, and the combustion zone is expanded towards the center due to the increase of the gas quantity and the blast kinetic energy of the hearth. As the coal injection amount increases, it is necessary to properly enlarge the tuyere area and reduce the blast kinetic energy. After the fuel is injected, the volume of pig iron furnace burden is reduced, the residence time of furnace burden in the furnace is prolonged, and the indirect reduction reaction is improved. And as the amount of blowing increases, a central air flow is formed, with consequent increase in the central temperature. The upper indirect reducibility is improved due to the increase of the concentration of the reducing gas; meanwhile, the resistance of the blast furnace burden column is increased, the pressure difference is increased, and the quality of the cast iron after injection can be improved to a certain extent. The conventional conveying device for blowing coal dust of the blast furnace is easy to block a pipeline in the conveying process. And the quantitative feeding and the material transferring of the terminal cannot be realized.
Disclosure of Invention
The utility model provides a pulverized coal conveying device for a blast furnace, aiming at the defects existing in the prior art.
In order to achieve the purpose, the utility model adopts the following technical scheme that the device comprises a feeding unit, a feeding bin, a receiving unit, a quantitative bin, a horizontal pushing unit and a mixing chamber.
The quantitative bin is positioned below the receiving unit, and the horizontal pushing unit is positioned below the quantitative bin; the top of ration feed bin is provided with the push-pull valve one, the bottom of ration feed bin is provided with the push-pull valve two.
The discharging port of the feeding unit is communicated with the inlet of the feeding bin, the outlet of the feeding bin is communicated with the inlet of the receiving unit, the outlet of the receiving unit is communicated with the inlet of the quantitative bin, the outlet of the quantitative bin is communicated with the inlet of the horizontal pushing unit, and the outlet of the horizontal pushing unit is communicated with the mixing chamber; the mixing chamber is communicated with a compressed air source for feeding.
Further, a first material level sensor for detecting the material level is arranged on the side wall of the top of the quantitative bin and below the gate valve.
Further, a second material level sensor for detecting low material level is arranged on the side wall of the bottom of the quantitative bin and above the second gate valve.
Further, the feeding unit comprises a feeding hopper, the feeding hopper is arranged on a bracket, and a crawling ladder (convenient for feeding) is arranged on one side of the bracket; and a first vibration feeder is arranged on the feeding hopper.
Further, the feeding bin is arranged on one side of the feeding hopper on the support.
Still further, throw the material storehouse and adopt automatic agitator tank (and be horizontal agitator tank), automatic agitator tank is fixed in on the support, and automatic agitator tank's import with the discharge gate of material loading hopper is linked together, automatic agitator tank's export is linked together with receiving the material unit.
Still further, connect the material unit to include and connect the hopper, connect the lateral wall opening of hopper, as the import that connects the material unit to be linked together with the export of automatic agitator tank, the export that connects the hopper is linked together with quantitative feed bin top import.
Furthermore, a second vibration device is arranged on the receiving hopper.
Further, the horizontal pushing unit comprises a spiral pusher, the outlet of the quantitative bin is communicated with the inlet of the spiral pusher through a discharging channel, and the outlet of the spiral pusher is communicated with the feeding hole of the mixing chamber.
Further, the mixing chamber is provided with a compressed gas inlet, the compressed gas inlet is connected with a compressed gas source, the compressed gas inlet and a mixing chamber feed inlet are positioned on the same side of the mixing chamber, and a mixing chamber discharge outlet is positioned on the opposite side of the compressed gas inlet.
Compared with the prior art, the utility model has the beneficial effects.
1. The utility model realizes the mass storage of coal dust, realizes the periodic feeding at intervals, meets the requirement of one-time feeding of one class, and reduces the continuous duty of personnel.
2. The quantitative bin can realize accurate control of feeding and improve the use efficiency and rhythm of the pulverized coal of the blast furnace. And the design of the vibrator reduces the blocking phenomenon in the pulverized coal transportation process.
3. The automatic feeding device reduces personnel participation and realizes the effect of reducing personnel and improving efficiency.
Drawings
The utility model is further described below with reference to the drawings and the detailed description. The scope of the present utility model is not limited to the following description.
FIG. 1 is a schematic diagram of the overall structure of a pulverized coal conveyor for a blast furnace.
Fig. 2 is a schematic view of a loading hopper structure.
Fig. 3 is a schematic view of a stent structure.
Fig. 4 is a schematic view of the structure of the receiving hopper.
Fig. 5 is a schematic illustration of the connection of the screw propellers to the mixing chamber.
In the figure, 1 is a feeding hopper, 2 is a vibrator I, 3 is a cat ladder, 4 is an automatic stirring tank, 5 is a receiving hopper, 6 is a vibrator II, 7 is a quantitative bin, 8 is a spiral pusher, 9 is a mixing chamber, 10 is a rotating motor, 11 is a bracket, 12 is a push-pull valve I, 13 is a push-pull valve II, 14 is a pusher motor, 15 is a pushing bin, 16 is a compressed gas inlet, 17 is a feeding hole, 18 is a material level sensor I, 19 is a material level sensor II, 20 is a blanking channel, and 21 is an outlet of the automatic stirring tank.
Detailed Description
How the present solution is implemented and operated will be explained below with reference to the accompanying drawings.
As shown in fig. 1-5, the blast furnace pulverized coal conveying device comprises a feeding unit, a feeding bin, a receiving unit, a quantitative bin 7, a horizontal pushing unit and a mixing chamber 9; the quantitative bin 7 is located below the receiving unit, and the horizontal pushing unit is located below the quantitative bin 7. The top of ration feed bin 7 is provided with push-pull valve one 12, and the bottom of ration feed bin 7 is provided with push-pull valve two 13. The discharge port of the feeding unit is communicated with the inlet of the feeding bin, the outlet of the feeding bin is communicated with the inlet of the receiving unit, the outlet of the receiving unit is communicated with the inlet of the quantitative bin 7, the outlet of the quantitative bin 7 is communicated with the inlet of the horizontal pushing unit, and the outlet of the horizontal pushing unit is communicated with the mixing chamber 9; the mixing chamber 9 is in communication with a compressed air source for feeding. The device does not need to adopt a pressure coal storage tank, the conveying process is safer, and the pipeline is not easy to be blocked in the conveying process.
The quantitative bin 7 is characterized in that a first material level sensor 18 for detecting the material level is arranged on the top side wall of the quantitative bin 7 and below the first gate valve 12, and a second material level sensor 19 for detecting the low material level is arranged on the bottom side wall of the quantitative bin 7 and above the first gate valve 12. The first level sensor 18 and the second level sensor 19 are both level sensors.
2. The feeding unit comprises a feeding hopper 1, the feeding hopper 1 is arranged on a bracket 11, and a crawling ladder 3 is arranged on one side of the bracket 11; make things convenient for follow-up workman to overhaul through cat ladder 3, supplementary material loading etc..
The material loading hopper 1 is provided with a material vibrator I2, so that the material loading hopper 1 is convenient for the material loading of the coal material. The feeding bin is arranged on the bracket 11 and on one side of the feeding hopper 1. The automatic stirring tank 4 is adopted in the feeding bin, and is a horizontal stirring tank, the automatic stirring tank 4 is fixed on the support 11, the inlet of the automatic stirring tank 4 is communicated with the discharge hole of the feeding hopper 1, and the outlet of the automatic stirring tank 4 is communicated with the receiving unit. The receiving unit comprises a receiving hopper 5, the side wall of the receiving hopper 5 is provided with an opening, the inlet of the receiving unit is communicated with the outlet of the automatic stirring tank 4, and the outlet of the receiving hopper 5 is communicated with the inlet at the top of the quantitative storage bin 7. The receiving hopper 5 is provided with a second vibrator 6.
3. The horizontal pushing unit comprises a spiral pusher 8, an outlet of the quantitative bin 7 is communicated with an inlet of the spiral pusher 8 through a discharging channel, and an outlet of the spiral pusher 8 is communicated with a feeding hole of the mixing chamber 9. The mixing chamber 9 is provided with a compressed gas inlet 16, the compressed gas inlet 16 is connected with a compressed gas source, the compressed gas inlet 16 and a feed inlet of the mixing chamber 9 are positioned on the same side of the mixing chamber 9, and a discharge outlet of the mixing chamber 9 is positioned on the opposite side of the compressed gas inlet 16.
Under the action of gravity, coal powder enters an automatic stirring tank 4 from a valve at the bottom of a feeding hopper 1. The screw rod is rotated under the drive of the rotating motor 10, the pulverized coal is pressed into the receiving hopper 5, and the receiving hopper 5 enters the quantitative storage bin 7 after being subjected to blanking by the vibration feeder II 6. The quantitative bin 7 realizes quantitative feeding through the cooperation of the first gate valve 12 and the second gate valve. The compressed air passing through the mixing chamber 9 is used for sending out the pulverized coal, and the quantitative bunker 7 can be used for adjusting the coal feeding amount in the conveying process.
The quantitative bin 7 is matched with the first gate valve 12 and the second gate valve, the first high level sensor 18 and the second low level sensor 19, when the second low level sensor 19 detects incoming materials and the first high level sensor 18 does not detect full materials, the first gate valve 12 is opened for feeding, and the second gate valve 13 is closed for quantitative storage. When the second low level sensor 19 detects incoming materials and the first high level sensor 18 detects full materials, the first gate valve 12 is closed to prevent feeding, and the second gate valve 13 is closed to feed the spiral pusher 8. Furthermore, the purpose of counting and controlling the feeding amount can be achieved through the cooperation of the first gate valve 12 and the second gate valve.
Description of the action process:
1. the coal powder is manually hoisted to the feeding port through the crown block, and the feeding work of the feeding hopper 1 is completed.
2. The pulverized coal enters the feeding bin from the feeding port, and the first vibration feeder 2 is arranged at the inlet end of the feeding port, so that the rapid inflow of the pulverized coal is facilitated, and meanwhile, the blocking of the inlet by the pulverized coal is avoided.
3. The coal powder quantity of 8 cubes can be stored in the feeding bin, so that the production dosage of one class is convenient.
4. When the blast furnace needs pulverized coal, the rotary motor 10 drives the feeding bin to rotate, and the feeding bin outputs the pulverized coal through the discharge hole.
5. And the second vibration feeder 6 is also arranged on the receiving hopper 5, so that the pulverized coal is conveniently and smoothly conveyed.
6. The receiving hopper 5 stores a certain amount of pulverized coal, the first gate valve 12 is opened, the second gate valve 13 is closed, the pulverized coal fills the fixed material bin (feeding is performed according to the volume of the fixed material bin 7), at the moment, the first gate valve 12 is closed, the second gate valve 13 is opened, and the pulverized coal of the fixed material bin falls into the spiral pusher 8 downwards from the fixed material bin.
7. The spiral pushing rod starts to rotate, and the pulverized coal is conveyed into the mixing chamber 9.
8. At this time, compressed air is input through the compressed air inlet 16, and the pulverized coal is driven into the blast furnace by the high-pressure gas.
The foregoing is only a preferred embodiment of the utility model, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the utility model.
Claims (10)
1. The blast furnace pulverized coal conveying device comprises a feeding unit, a feeding bin, a receiving unit, a quantitative bin, a horizontal pushing unit and a mixing chamber; the method is characterized in that: the quantitative bin is positioned below the receiving unit, and the horizontal pushing unit is positioned below the quantitative bin; the top of the quantitative bin is provided with a first gate valve, and the bottom of the quantitative bin is provided with a second gate valve;
the discharging port of the feeding unit is communicated with the inlet of the feeding bin, the outlet of the feeding bin is communicated with the inlet of the receiving unit, the outlet of the receiving unit is communicated with the inlet of the quantitative bin, the outlet of the quantitative bin is communicated with the inlet of the horizontal pushing unit, and the outlet of the horizontal pushing unit is communicated with the mixing chamber; the mixing chamber is communicated with a compressed air source for feeding.
2. A pulverized coal conveyor for a blast furnace according to claim 1, wherein: and a first material level sensor for detecting the material level is arranged on the side wall of the top of the quantitative storage bin and below the gate valve.
3. A pulverized coal conveyor for a blast furnace according to claim 1, wherein: and a second material level sensor for detecting low material level is arranged on the side wall of the bottom of the quantitative bin and above the second gate valve.
4. A pulverized coal conveyor for a blast furnace according to claim 1, wherein: the feeding unit comprises a feeding hopper, the feeding hopper is arranged on a bracket, and a crawling ladder is arranged on one side of the bracket; and a first vibration feeder is arranged on the feeding hopper.
5. The pulverized coal conveyor device for blast furnace according to claim 4, wherein: the feeding bin is arranged on one side of the feeding hopper on the support.
6. The pulverized coal conveyor device for blast furnace according to claim 4, wherein: the automatic stirring tank is fixed on the support, an inlet of the automatic stirring tank is communicated with a discharge hole of the feeding hopper, and an outlet of the automatic stirring tank is communicated with the receiving unit.
7. The pulverized coal conveyor device for blast furnace according to claim 6, wherein: the receiving unit comprises a receiving hopper, the side wall of the receiving hopper is provided with an opening, the inlet of the receiving hopper is communicated with the outlet of the automatic stirring tank, and the outlet of the receiving hopper is communicated with the inlet at the top of the quantitative storage bin.
8. The pulverized coal conveyor device for blast furnace according to claim 7, wherein: and a second vibration feeder is arranged on the receiving hopper.
9. A pulverized coal conveyor for a blast furnace according to claim 1, wherein: the horizontal pushing unit comprises a spiral pusher, the outlet of the quantitative bin is communicated with the inlet of the spiral pusher through a discharging channel, and the outlet of the spiral pusher is communicated with the feeding hole of the mixing chamber.
10. A pulverized coal conveyor for a blast furnace according to claim 1, wherein: the mixing chamber is provided with a compressed gas inlet, the compressed gas inlet is connected with a compressed gas source, the compressed gas inlet and a mixing chamber feed inlet are positioned on the same side of the mixing chamber, and a mixing chamber discharge outlet is positioned on the opposite side of the compressed gas inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322215152.0U CN220596366U (en) | 2023-08-17 | 2023-08-17 | Pulverized coal conveying device of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322215152.0U CN220596366U (en) | 2023-08-17 | 2023-08-17 | Pulverized coal conveying device of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220596366U true CN220596366U (en) | 2024-03-15 |
Family
ID=90165326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322215152.0U Active CN220596366U (en) | 2023-08-17 | 2023-08-17 | Pulverized coal conveying device of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220596366U (en) |
-
2023
- 2023-08-17 CN CN202322215152.0U patent/CN220596366U/en active Active
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