CN212668545U - Pneumatic conveying device for blast furnace gravity dust removal ash - Google Patents
Pneumatic conveying device for blast furnace gravity dust removal ash Download PDFInfo
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- CN212668545U CN212668545U CN202020312183.1U CN202020312183U CN212668545U CN 212668545 U CN212668545 U CN 212668545U CN 202020312183 U CN202020312183 U CN 202020312183U CN 212668545 U CN212668545 U CN 212668545U
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Abstract
The utility model discloses a pneumatic conveyor of blast furnace gravity dust removal ash, it includes high pressurized air source and pneumatic conveying unit, the pneumatic conveying unit includes buffer tank and electric vane feeder, the top of buffer tank is connected and is installed the filter through the ash storehouse of unloading grey ball valve and gravity dust remover, the filter is connected with the atmosphere through pneumatic ball valve of loosing, and the lateral part of buffer tank is connected with high pressurized air source through fluidization check valve and pneumatic fluidization ball valve in proper order, electric vane feeder's feed inlet and buffer tank bottom are connected, and the discharge gate blows the grey ball valve through pneumatics and is connected with high pressurized air source and buries the straw in proper order and connect the suction and discharge tank car through pneumatic ash discharge ball valve and wear-resisting. The utility model discloses the dust that utilizes the power that high-pressure gas and electric impeller batcher provided in with blast furnace gravity dust remover ash bin carries the suction and discharge tank car, and not only ash conveying speed is stable, owing to adopted totally enclosed structure, unloads the ash in-process and can not produce the raise dust moreover to environmental pollution has effectively been avoided.
Description
Technical Field
The utility model relates to a device for carrying the dust in the ash bin of a gravity dust collector of a blast furnace to a suction and discharge tank car, which belongs to the technical field of metallurgical equipment.
Background
The gravity dust collector is a coarse particle dust collector widely applied in a blast furnace gas dust collection system, can remove dust particles with the particle size larger than 30 microns, and has the dust collection efficiency of 80 percent.
At present, the domestic blast furnace gravity dust collector mostly adopts a humidifying dust discharging machine to discharge dust and open type automobile transportation, and because the humidifying effect is poor, serious dust pollution is easily caused in the process of conveying dust from a dust bin of the dust collector to a transportation vehicle. Therefore, how to avoid environmental pollution during dust transportation is a problem for technicians.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a pneumatic conveying device of blast furnace gravity dust removal to the drawback of prior art to avoid the dust remover to produce environmental pollution at the ash unloading in-process.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a pneumatic conveyor of blast furnace gravity dust removal ash, includes high pressurized air source and at least one pneumatic conveying unit in the constitution, the pneumatic conveying unit includes buffer tank and electric impeller feeder, the top of buffer tank is connected and installs the filter through the grey storehouse of unloading grey ball valve with gravity dust remover, the filter is connected with the atmosphere through pneumatic ball valve that diffuses, and the lateral part of buffer tank is connected with high pressurized air source through fluidization check valve and pneumatic fluidization ball valve in proper order, electric impeller feeder's feed inlet is connected with the ash discharge mouth of buffer tank bottom, and the discharge gate blows the ash ball valve through pneumatics and is connected with high pressurized air source and bury the straw in proper order and connect the suction and discharge tank car through pneumatics.
Above-mentioned pneumatic conveyor of blast furnace gravity dust removal ash, high pressurized air source includes nitrogen gas storage tank, entry stop valve, entry check valve, export stop valve and relief pressure valve, the air inlet of nitrogen gas storage tank is connected with high-pressure nitrogen gas through entry check valve and entry stop valve in proper order, and the gas outlet loops through export stop valve and relief pressure valve and is connected with pneumatic conveying unit.
Above-mentioned pneumatic conveyor of blast furnace gravity dust removal ash, the filter is equipped with the blowback device, the blowback device includes pneumatic blowback ball valve and blowback check valve, the air inlet of pneumatic blowback ball valve connects high pressurized air source, and the gas outlet is connected with the filter through the blowback check valve.
According to the pneumatic conveying device for the blast furnace gravity dedusting ash, the weighing sensor is arranged at the lower part of the buffer tank.
Above-mentioned pneumatic conveyor of blast furnace gravity dust removal ash, unload grey ball valve and set up two, be respectively last pneumatic grey ball valve of unloading and lower pneumatic grey ball valve, the two connects between the ash bin and the buffer tank of gravity dust remover with manual grey ball valve series connection back.
According to the pneumatic conveying device for the blast furnace gravity dust removal ash, the back flushing pipeline connected with the pneumatic back flushing ball valve is internally provided with the manual back flushing ball valve.
According to the pneumatic conveying device for the blast furnace gravity dust removal ash, the manual fluidization ball valve is arranged in the fluidization pipeline connected with the pneumatic fluidization ball valve.
In the pneumatic conveying device for the gravity dust removal ash of the blast furnace, the pneumatic ash blowing ball valve is connected with the ash blowing stop valve in series.
According to the pneumatic conveying device for the gravity dust removal of the blast furnace, metal flexible connections are arranged between the buffer tank and the pneumatic blow-off ball valve, the upper pneumatic dust discharge ball valve, the pneumatic fluidization ball valve, the pneumatic back-flushing ball valve and the electric impeller feeder.
The utility model discloses the suction and exhaust tank car is carried to the dust that utilizes the power that high-pressure gas and electric vane feeder provided in with blast furnace gravity dust remover ash storehouse, unloads grey machine with traditional humidification and compares, and the device is not only defeated grey speed stable, owing to adopted totally enclosed structure, unloads the ash in-process and can not produce the raise dust moreover to environmental pollution has effectively been avoided.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of the present invention.
The reference numbers in the figures are as follows: 1. an inlet stop valve 2, an inlet check valve 3, a nitrogen storage tank 4, an outlet stop valve 5, a pressure reducing valve 6, a lower pneumatic ash discharging ball valve 7, a buffer tank 8, a weighing sensor 9, a manual fluidization ball valve 10, a pneumatic fluidization ball valve 11, a fluidization pipe metal flexible connection 12, a fluidization check valve 13, a filter 14, a diffusing pipe metal flexible connection 15, a pneumatic diffusing ball valve 16, 17, a metal flexible connection of an ash discharge port, 18, an electric impeller feeder, 19, an ash blowing stop valve, 20, a pneumatic ash blowing ball valve, 21, a tee joint, 22, a wear-resistant buried suction pipe, 23, a manual blowback ball valve, 24, a pneumatic blowback ball valve, 25, a blowback pipe metal flexible connection, 26, a blowback check valve, 27, an ash discharge pipe metal flexible connection, 28, an upper pneumatic ash discharge ball valve, 29, a manual ash discharge ball valve, 30 and an ash bin.
Detailed Description
The utility model provides a pneumatic conveying device for blast furnace gravity dedusting ash, which adopts a totally enclosed structure, has stable ash conveying speed and is environment-friendly.
Referring to fig. 1, the present invention comprises a high pressure air source and at least one pneumatic conveying unit (two are shown in the figure), wherein the high pressure air source comprises an inlet stop valve 1, an inlet check valve 2, a nitrogen storage tank 3, an outlet stop valve 4 and a pressure reducing valve 5, each pneumatic conveying unit comprises a lower pneumatic ash discharging ball valve 6, a buffer tank 7, a weighing sensor 8, a manual fluidization ball valve 9, a pneumatic fluidization ball valve 10, a fluidization pipe metal soft joint 11, a fluidization check valve 12, a filter 13, a blow-off pipe metal soft joint 14, a pneumatic blow-off ball valve 15, a pneumatic ash discharging ball valve 16, an ash discharging port metal soft joint 17, an electric impeller feeder 18, an ash blowing stop valve 19, a pneumatic ash blowing ball valve 20, a tee joint 21, a wear-resistant buried suction pipe 22, a manual back blowing ball valve 23, a pneumatic back blowing ball valve 24, a back blowing pipe metal soft joint 25, a back blowing check valve 26, an ash discharging, An upper pneumatic ash discharge ball valve 28 and a manual ash discharge ball valve 29.
The working process of the utility model is as follows:
1. nitrogen gas gets into nitrogen gas storage tank 3 through inlet stop valve 1 and inlet check valve 2 in, nitrogen gas storage tank 3's effect is for storing nitrogen gas to reduce the big influence to nitrogen gas outer net pressure fluctuation of nitrogen gas pressurization instantaneous flow. And the nitrogen in the nitrogen storage tank 3 is decompressed by the outlet stop valve 4 and the pressure reducing valve 5 and then enters each pneumatic transmission unit.
2. When the blast furnace gravity dust collector unloads ash, open pneumatic diffusion ball valve 15 earlier, after buffer tank 7 internal pressure was discharged completely, open lower pneumatic unloading ball valve 6 in proper order, go up pneumatic unloading ball valve 28 (manual unloading ball valve 29 is in the open mode this moment), the gravity ash in ash storehouse 30 gets into in the buffer tank 7, when weighing sensor 8 weighing value reached the upper limit, close pneumatic unloading ball valve 28 in proper order, lower pneumatic unloading ball valve 6, stop unloading the ash in buffer tank 7.
3. The nitrogen is fluidized by a manual fluidization ball valve 9, a pneumatic fluidization ball valve 10, a fluidization pipe metal flexible connection 11 and a fluidization check valve 12, the gravity ash is blown and swept to the coal gas entering the buffer tank 7, and the nitrogen and the coal gas in the buffer tank 7 are filtered by a filter 13 and then are diffused to the atmosphere by a diffusion pipe metal flexible connection 14 and a pneumatic diffusion ball valve 15. And after the purging is finished, closing the pneumatic fluidization ball valve 10 and then closing the pneumatic diffusion ball valve 15, and entering a dust suction and discharge tank car to suck dust.
4. And opening the pneumatic ash discharge ball valve 16, opening the pneumatic ash discharge ball valve 20 in a delayed manner, opening the electric impeller feeder 18 after the pressure in the pipeline is normal, and allowing the gravity ash in the buffer tank 7 to enter the suction and discharge tank car through the ash discharge opening metal flexible connection 17, the electric impeller feeder 18, the tee joint 21, the pneumatic ash discharge ball valve 16 and the wear-resistant buried suction pipe 22.
5. And when the weighing value of the weighing sensor 8 reaches a set value or the suction and discharge tank car is full of suction, the electric impeller feeder 18, the pneumatic soot blowing ball valve 20 and the pneumatic soot discharging ball valve 16 are closed in sequence, and the ash discharge is finished.
6. The nitrogen regularly carries out back flushing on the diffusion filter 13 through a manual back flushing ball valve 23, a pneumatic back flushing ball valve 24, a back flushing pipe metal flexible connection 25 and a back flushing check valve 26.
7. The back-blowing nitrogen in the buffer tank 7 is filtered by a filter 13 and then is diffused into the atmosphere through a diffusing pipe metal flexible connection 14 and a pneumatic diffusing ball valve 15.
The utility model has the characteristics that:
1. adopt nitrogen gas to sweep the cooling to the gravity ash, avoid appearing because the too high problem that leads to inhaling the row of tank car and can not inhale the ash of gravity ash temperature, when gravity dust collector upper portion pipeline or valve blockked up, can conveniently, clear up fast, reduced worker intensity of labour.
2. Establish filter 13 on buffer tank 7, filter the diffused gas, realize the ultralow emission, the phenomenon that the diffused gas appears and emits black cigarette in the coal gas sweeps in-process in avoiding buffer tank 7.
3. The buffer tank 7 is provided with a fluidizing device consisting of a manual fluidizing ball valve 9, a pneumatic fluidizing ball valve 10, a fluidizing pipe metal flexible connection 11 and a fluidizing check valve 12, so that stable fluidizing pneumatic transmission is realized, and the problems of surging and ash emission in the ash suction process are avoided.
4. The buffer tank 7 is provided with the weighing sensor 8, so that the material level control of the buffer tank 7 and the metering of the ash content of the blast furnace can be realized.
5. An electric impeller feeder 18 is arranged on the ash discharge pipe of the buffer tank 7, so that stable and adjustable gravity ash conveying is realized.
6. The totally enclosed structure reduces environmental pollution.
7. High automation operation level and perfect monitoring means, and ensures the operation safety.
Claims (9)
1. A pneumatic conveying device for gravitational dust removal of a blast furnace is characterized by comprising a high-pressure air source and at least one pneumatic conveying unit, the pneumatic conveying unit comprises a buffer tank (7) and an electric impeller feeder (18), the top of the buffer tank (7) is connected with an ash bin (30) of the gravity dust collector through an ash discharge ball valve and is provided with a filter (13), the filter (13) is connected with the atmosphere through a pneumatic diffusion ball valve (15), the side part of the buffer tank (7) is connected with a high-pressure air source through a fluidization check valve (12) and a pneumatic fluidization ball valve (10) in sequence, the feeding port of the electric impeller feeder (18) is connected with the ash discharging port at the bottom of the buffer tank (7), and the discharging port is connected with a high-pressure air source through a pneumatic ash blowing ball valve (20) and is sequentially connected with a suction and discharge tank car through a pneumatic ash discharging ball valve (16) and a wear-resistant buried suction pipe (22).
2. The pneumatic conveying device for the gravitational dedusting ash of the blast furnace as claimed in claim 1, wherein the high-pressure air source comprises a nitrogen storage tank (3), an inlet stop valve (1), an inlet check valve (2), an outlet stop valve (4) and a pressure reducing valve (5), an air inlet of the nitrogen storage tank (3) is connected with the high-pressure nitrogen sequentially through the inlet check valve (2) and the inlet stop valve (1), and an air outlet is connected with the pneumatic conveying unit sequentially through the outlet stop valve (4) and the pressure reducing valve (5).
3. The pneumatic conveying device for the gravitational dust collection of the blast furnace as claimed in claim 1 or 2, wherein said filter (13) is provided with a back-blowing device, said back-blowing device comprises a pneumatic back-blowing ball valve (24) and a back-blowing check valve (26), an air inlet of said pneumatic back-blowing ball valve (24) is connected with a high-pressure air source, and an air outlet is connected with the filter (13) through the back-blowing check valve (26).
4. The pneumatic conveying device for the blast furnace gravity dedusting ash according to the claim 3, characterized in that the lower part of the buffer tank (7) is provided with a weighing sensor (8).
5. The pneumatic conveying device for the gravitational precipitator dust of the blast furnace according to claim 4, wherein the two dust discharging ball valves are an upper pneumatic dust discharging ball valve (28) and a lower pneumatic dust discharging ball valve (6), which are connected in series with a manual dust discharging ball valve (29) and then connected between the dust bin (30) and the buffer tank (7) of the gravitational precipitator.
6. The pneumatic conveying device for the gravitational dust collection of the blast furnace as claimed in claim 5, wherein a manual blowback ball valve (23) is arranged in a blowback pipeline connected with the pneumatic blowback ball valve (24).
7. The pneumatic conveying device for the blast furnace dust removed by gravity as claimed in claim 6, wherein a manual fluidization ball valve (9) is arranged in a fluidization pipeline connected with the pneumatic fluidization ball valve (10).
8. The pneumatic conveying device for the blast furnace gravity dedusting ash according to the claim 7, characterized in that the pneumatic soot blowing ball valve (20) is connected with a soot blowing stop valve (19) in series.
9. The pneumatic conveying device for the gravitational precipitator dust of the blast furnace according to claim 8, wherein metal flexible connections are arranged between the buffer tank (7) and the pneumatic blow-off ball valve (15), the upper pneumatic ash discharge ball valve (28), the pneumatic fluidization ball valve (10), the pneumatic blowback ball valve (24) and the electric impeller feeder (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020312183.1U CN212668545U (en) | 2020-03-13 | 2020-03-13 | Pneumatic conveying device for blast furnace gravity dust removal ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020312183.1U CN212668545U (en) | 2020-03-13 | 2020-03-13 | Pneumatic conveying device for blast furnace gravity dust removal ash |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212668545U true CN212668545U (en) | 2021-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020312183.1U Active CN212668545U (en) | 2020-03-13 | 2020-03-13 | Pneumatic conveying device for blast furnace gravity dust removal ash |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212668545U (en) |
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2020
- 2020-03-13 CN CN202020312183.1U patent/CN212668545U/en active Active
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| CP03 | Change of name, title or address |
Address after: 063000 No. 599, Ronghua West Road, Lubei District, Tangshan City, Hebei Province Patentee after: Tanggang International Engineering Technology Co.,Ltd. Address before: No. 1 Jianhua Road, North District of Tangshan City Road, Hebei Province, Hebei Patentee before: TANGSTEEL INTERNATIONAL ENGINEERING TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address |