CN212475282U - Pulse type external air supply aluminum oxide conveying device - Google Patents
Pulse type external air supply aluminum oxide conveying device Download PDFInfo
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- CN212475282U CN212475282U CN202020353855.3U CN202020353855U CN212475282U CN 212475282 U CN212475282 U CN 212475282U CN 202020353855 U CN202020353855 U CN 202020353855U CN 212475282 U CN212475282 U CN 212475282U
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Abstract
The utility model discloses a pulse type external air supply alumina conveying device, which comprises a tank body, wherein the top of the tank body is provided with a bell jar valve, and the top of the bell jar valve is connected with a blanking valve through a bolt; the bottom of the tank body is connected with a horn bent pipe which is communicated with a conveying pipeline through the horn bent pipe; the conveying pipeline is sectional, and all sections are communicated with each other; one side of the tank body is also communicated with a branch of the air supply pipe, and the main path of the air supply pipe is communicated with the conveying pipeline. Because the flow velocity of the alumina in the pipeline is low, the abrasion of the pipeline is reduced, and the maintenance cost of enterprises is reduced; meanwhile, the damage rate of the aluminum oxide is reduced; and once alumina pipeline blockage occurs, blockage removal can be realized, and the automation degree is high.
Description
Technical Field
The utility model belongs to the technical field of electrolytic aluminum factory alumina conveying equipment, a pulsed outer tonifying qi alumina conveyor is related to.
Background
In the production of alumina by electrolysis, the transport of alumina is a very important link. The alumina conveying device is used for conveying alumina powder remotely by utilizing compressed air through a pipeline, and the main principle is that the compressed air is used as a power source, and materials are conveyed by utilizing dynamic pressure or static pressure, so that the alumina conveying device is a specific application of a fluidization technology. The conveying of materials can be divided into two main categories of mechanical conveying and pneumatic conveying from the power source: the mechanical conveying can be divided into several forms such as vertical lifting by a bucket elevator, a belt conveyor, a trolley track conveyor and the like; the pneumatic conveying can be divided into dilute phase conveying, concentrated phase conveying and super concentrated phase conveying.
The pneumatic conveying device has the advantages of simple structure, convenient operation, long conveying distance, no limitation on conveying space and the like. In addition, due to the totally closed nature of the pneumatic conveying equipment, no dust flies upward in the whole conveying process, and no environmental pollution is caused.
At present, the alumina conveying of domestic electrolytic aluminum plants basically adopts an internal air-supplementing dynamic and static pressure mixed conveying mode. The disadvantages of internal air supply dynamic and static pressure mixed conveying are that the solid-gas ratio of alumina conveying is low (less than 10), the tank body material beating time is long, and the problems of serious abrasion of a conveying pipeline, high alumina breakage rate and the like are caused because the flow velocity of alumina in the pipeline is high. In addition, once pipeline blockage occurs, the blockage cannot be automatically cleared, and the automation degree is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an outer tonifying qi aluminium oxide conveyor of pulsed has solved the solid gas ratio of the aluminium oxide transport that exists among the prior art and has low, and jar body ramming time is long and can not clear stifled problem automatically.
The utility model adopts the technical proposal that the pulse type external air supply alumina conveying device comprises a tank body, a bell jar valve is arranged at the top of the tank body, and the top of the bell jar valve is connected with a blanking valve through a bolt; the bottom of the tank body is connected with a horn bent pipe which is communicated with a conveying pipeline through the horn bent pipe; the conveying pipeline is sectional, and all sections are communicated with each other; one side of the tank body is also communicated with a branch of the air supply pipe, and the main path of the air supply pipe is communicated with the conveying pipeline.
The top of the tank body is respectively provided with a charge level indicator and an exhaust valve.
The length of each section of the conveying pipeline is 12-24 m.
The junction of the ox horn elbow at the bottom of the tank body and the conveying pipeline is provided with a discharge valve, and the conveying pipeline behind the discharge valve is communicated with the main branch of the air supplement pipe through the conveying valve.
A balance valve is connected between the air supply pipe branch and the tank body.
The conveying pipeline is also provided with a pressure gauge.
An air supply valve is connected between the main path of the air supply pipe and each section of conveying pipeline.
The utility model has the advantages that: the solid-gas ratio of the alumina delivery is improved by more than 50 percent compared with the solid-gas ratio of the original internal air supplement; the tank body material beating time is shortened by 50%, and the time efficiency of operators is improved; because the flow velocity of the alumina in the pipeline is low, the abrasion of the pipeline is reduced, and the maintenance cost of enterprises is reduced; meanwhile, the damage rate of the aluminum oxide is reduced; and once alumina pipeline blockage occurs, blockage removal can be realized, and the automation degree is high.
Drawings
FIG. 1 is a schematic structural view of a pulse type external air supply alumina conveying device of the present invention;
FIG. 2 is a process flow diagram of the pulse type external air supply alumina conveying device of the present invention;
in the figure, 1, a blanking valve, 2, a level indicator, 3, a bell valve, 4, a balance valve, 5, an exhaust valve, 6, a tank body, 7, a ox horn bent pipe, 8, a discharge valve, 9, a pressure gauge, 10, a delivery valve, 11, an air supply valve, 12, an air supply pipe and 13, a delivery pipeline.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the pulse type external air supply alumina conveying device comprises a tank body 6, wherein a bell jar valve 3 is arranged at the top of the tank body 6, and the tank body 6 is sealed after materials are filled in the tank body 6; the top of the bell jar valve 3 is connected with the blanking valve 1 through a bolt, so that the material enters the bell jar valve 3 from the hopper; the bottom of the tank body 6 is communicated with a conveying pipeline 13 through a horn bent pipe 7 to convey alumina; the conveying pipeline 13 is in a sectional type, and all sections are communicated with each other; one side of the tank body 6 is also communicated with a branch of an air supplement pipe 12, the main path of the air supplement pipe 12 is communicated with a conveying pipeline 13, and the air supplement pipe 12 is communicated with an air source to provide compressed air.
The material level indicator 2 and the exhaust valve 5 are respectively installed at the top of the tank body 6, the material level indicator 2 detects whether the tank body 6 is full, and the exhaust valve 5 exhausts the air in the tank body 6 when the material enters the tank body 6.
The length of each section of the conveying pipeline 13 is 12-24 m.
A balance valve 4 is connected between the branch of the air supply pipe 12 and the tank body 6, and the pressure of the tank body 6 is controlled through the balance valve 4.
A discharge valve 8 is arranged at the joint of the ox horn bent pipe 7 at the bottom of the tank body 6 and the conveying pipeline 13; the conveying pipeline 13 behind the discharge valve 8 is communicated with the main path of the air supplementing pipe 12 through a conveying valve 10, and the conveying valve 10 cuts the materials coming out of the tank body 6 into bolt-shaped material columns.
The conveying pipeline 13 is also provided with a pressure gauge 9 for detecting the pressure value in the conveying pipeline.
An air compensating valve 11 is connected between the main path of the air compensating pipe 12 and each section of the conveying pipeline 13, and the inlet amount of compressed air is controlled through the air compensating valve 11.
As shown in fig. 2, the process steps of the device are as follows:
step 1. closing the balancing valve 4 and the delivery valve 10, ready for starting the charging.
And 2, opening the exhaust valve 5 and the bell valve 3, closing the discharge valve 8, opening the blanking valve 1 and starting to charge the tank body 6.
And step 3, after the tank body 6 is filled with the materials, closing the blanking valve 1, closing the exhaust valve 5 and the bell valve 3, and opening the balance valve 4 to prepare for starting to convey the materials.
And 4, opening the conveying valve 10, the discharge valve 8 and the air compensating valve 11 to start conveying the materials.
Step 5, when the situation of material blockage occurs, closing the balance valve 4 firstly; if the blockage can not be relieved, the discharge valve 8 is closed, and compressed air in the main path of the air supply pipe 12 enters the conveying pipeline for automatic blockage removal.
And 6, after the material blockage removal is finished, opening the balance valve 4 and the discharge valve 8, and continuously conveying the material.
Step 7, closing the balance valve 4 after the material is conveyed; the delivery valve 10 is closed, and the aeration valve 11 is closed.
The solid-gas ratio of the alumina delivery is improved by more than 50 percent compared with the solid-gas ratio of the original internal air supplement; the tank body material beating time is shortened by 50%, and the time efficiency of operators is improved; because the flow velocity of the alumina in the pipeline is low, the abrasion of the pipeline is reduced, and the maintenance cost of enterprises is reduced; meanwhile, the damage rate of the aluminum oxide is reduced; and once alumina pipeline blockage occurs, blockage removal can be realized, and the automation degree is high.
The energy-saving effect of the device for producing certain aluminum plant is as follows:
| name (R) | Before transformation | After transformation |
| Transporting a jar of alumina (kg) | 6000 | 6000 |
| Using compressed air (Nm3) | 580 | 380 |
| Solid-gas ratio (kg/Nm3) | 10 | 15.8 |
| Knockout time (min) | 17-25 | 8-11 |
| Alumina flow velocity (m/s) | 30 | 9 |
| Lowest pressure (MPa) | 0.48 | 0.4 |
Claims (7)
1. The pulse type external air supply alumina conveying device is characterized by comprising a tank body (6), wherein a bell jar valve (3) is mounted at the top of the tank body (6), and the top of the bell jar valve (3) is connected with a blanking valve (1) through a bolt; the bottom of the tank body (6) is connected with a horn bent pipe (7), and the horn bent pipe (7) is communicated with a conveying pipeline (13); the conveying pipeline (13) is sectional, and all sections are communicated with each other; one side of the tank body (6) is also communicated with a branch of the air supply pipe (12), and a main path of the air supply pipe (12) is communicated with the conveying pipeline (13).
2. The pulse type external air supply alumina conveying device according to claim 1, characterized in that a level indicator (2) and an exhaust valve (5) are respectively installed on the top of the tank body (6).
3. The pulsed external makeup alumina delivery device according to claim 1, wherein the length of each segment of said delivery duct (13) is 12 to 24 m.
4. The pulse type external air supply alumina conveying device according to claim 1, characterized in that a balance valve (4) is connected between the branch of the air supply pipe (12) and the tank body (6).
5. The pulse type external air supply alumina conveying device according to claim 1, characterized in that a discharge valve (8) is arranged at the joint of the ox horn bent pipe (7) at the bottom of the tank body (6) and the conveying pipeline (13); the delivery pipeline (13) behind the discharge valve (8) is communicated with the main path of the air supply pipe (12) through a delivery valve (10).
6. The pulsed external air supply alumina delivery device according to claim 1, wherein the delivery pipe (13) is further provided with a pressure gauge (9).
7. The pulse type external air supply alumina conveying device according to claim 1, characterized in that an air supply valve (11) is connected between the main path of the air supply pipe (12) and each section of conveying pipeline (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020353855.3U CN212475282U (en) | 2020-03-19 | 2020-03-19 | Pulse type external air supply aluminum oxide conveying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020353855.3U CN212475282U (en) | 2020-03-19 | 2020-03-19 | Pulse type external air supply aluminum oxide conveying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212475282U true CN212475282U (en) | 2021-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020353855.3U Active CN212475282U (en) | 2020-03-19 | 2020-03-19 | Pulse type external air supply aluminum oxide conveying device |
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|---|---|
| CN (1) | CN212475282U (en) |
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2020
- 2020-03-19 CN CN202020353855.3U patent/CN212475282U/en active Active
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