CN111115034A - Anti-blocking powder bin fluidizing device - Google Patents
Anti-blocking powder bin fluidizing device Download PDFInfo
- Publication number
- CN111115034A CN111115034A CN202010037278.1A CN202010037278A CN111115034A CN 111115034 A CN111115034 A CN 111115034A CN 202010037278 A CN202010037278 A CN 202010037278A CN 111115034 A CN111115034 A CN 111115034A
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- CN
- China
- Prior art keywords
- pressure
- powder bin
- equalizing ring
- ring pipe
- bin body
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/54—Large containers characterised by means facilitating filling or emptying
- B65D88/72—Fluidising devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/54—Large containers characterised by means facilitating filling or emptying
- B65D88/64—Large containers characterised by means facilitating filling or emptying preventing bridge formation
- B65D88/70—Large containers characterised by means facilitating filling or emptying preventing bridge formation using fluid jets
- B65D88/703—Air blowing devices, i.e. devices for the sudden introduction of compressed air into the container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/06—Fluidising
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Transport Of Granular Materials (AREA)
Abstract
The invention discloses an anti-blocking powder bin fluidizing device, which is characterized in that: comprises a powder bin body, a pressure-equalizing ring pipe, a supporting pipe and a fluidized medium pipeline; the pressure-equalizing ring pipe is horizontally arranged in the powder bin body through a plurality of supporting pipes; one end of each supporting pipe is communicated with the inner cavity of the pressure equalizing ring pipe, and the other end of each supporting pipe is communicated with the fluidized medium pipeline; the fluidized medium pipeline is positioned outside the powder bin body; and a fluidized medium leading-out structure is arranged at the bottom of the pressure-equalizing ring pipe. The powder bin can enhance the fluidization effect of the powder at the central part of the powder bin body, the guide-out structure is arranged downwards, and the powder is prevented from blocking the guide-out structure.
Description
Technical Field
The invention relates to an anti-blocking fluidizing device suitable for a powder storage bin, and belongs to the field of powder storage and conveying.
Background
The powder bin is a common device in pneumatic powder conveying, and as shown in fig. 1, pulverized coal is poured into the powder bin from a powder inlet at the top of the powder bin in a dumping mode or from a powder inlet at the side of the powder bin in a pneumatic conveying mode. The outlet of the powder bin is generally positioned at the bottom, and the outflow rate of the pulverized coal is controlled by a mechanical conveying device such as a star-shaped discharge valve.
Ideally, the powder should be able to flow out of the powder bin evenly and stably. However, in the case of powder having a high viscosity such as pulverized coal, abnormal conditions such as a central flow and channeling are likely to occur, and the uniformity of the powder outflow is significantly reduced. Even bridging occurs, so that the powder can not flow out completely. In order to avoid the above abnormal conditions, the powder in the bin is usually fluidized or loosened by compressed air or mechanical stirring.
The traditional compressed air fluidizing device is distributed on the wall surface of the conical section of the powder bin, and when the powder bin is large, the fluidizing effect on coal powder in the central part of the bin is poor. And because the compressed air outlet faces to the lateral upper part, the pulverized coal is easy to block the air outlet.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide an anti-blocking powder bin fluidizing device capable of improving the poor fluidizing effect of the traditional wall fluidizing device on the coal powder at the center of the powder bin.
In order to achieve the purpose, the invention adopts the following technical scheme: an anti-blocking powder bin fluidization device comprises a powder bin body, a pressure-equalizing ring pipe, a supporting pipe and a fluidization medium pipeline; the pressure-equalizing ring pipe is horizontally arranged in the powder bin body through a plurality of supporting pipes; one end of each supporting pipe is communicated with the inner cavity of the pressure equalizing ring pipe, and the other end of each supporting pipe is communicated with the fluidized medium pipeline; the fluidized medium pipeline is positioned outside the powder bin body and is connected with a fluidized medium supply source; and a fluidized medium leading-out structure is arranged at the bottom of the pressure-equalizing ring pipe.
Furthermore, a plurality of layers of pressure-equalizing ring pipes are arranged in the powder bin body at intervals from top to bottom, each pressure-equalizing ring pipe is horizontally arranged in the powder bin body through a plurality of supporting pipes, and the fluidized medium pipelines which are in one-to-one correspondence with the plurality of layers of pressure-equalizing ring pipes are arranged outside the powder bin body.
Furthermore, 2-4 layers of the pressure-equalizing ring pipes are arranged in the conical section of the powder bin body at intervals from top to bottom, and the diameters of the pressure-equalizing ring pipes are reduced layer by layer from top to bottom.
Furthermore, 3 layers of the pressure-equalizing ring pipes are arranged in the conical section part of the powder bin body at intervals from top to bottom; the pressure-equalizing ring pipe positioned on the top layer is arranged at a position which is 0.6-0.7 times the vertical height of the conical section of the powder bin body, the pressure-equalizing ring pipe positioned on the middle layer is arranged at a position which is 0.4-0.5 times the vertical height of the conical section of the powder bin body, and the pressure-equalizing ring pipe positioned on the bottom layer is arranged at a position which is 0.15-0.35 times the vertical height of the conical section of the powder bin body.
Further, the fluidized medium leading-out structure is an annular seam arranged at the bottom of the pressure equalizing ring pipe; or a plurality of lead-out seams or lead-out holes which are arranged at the bottom of the pressure-equalizing ring pipe and are uniformly distributed along the circumferential direction of the pressure-equalizing ring pipe.
Further, the width of the annular gap or the derivation gap is more than 2 mm; the leading-out hole is a circular, oval or rectangular hole.
Further, a flow rate regulating valve and a flow meter are arranged on the fluidizing medium pipeline between the fluidizing medium supply source and the supporting pipe;
the flow regulating valve and the flow meter are sequentially arranged along the flowing direction of the fluidized medium; the flow regulating valve adopts a valve capable of continuously regulating air quantity.
Further, the fluidizing medium supply source is a compressed air or inert gas source; the gas flow range in the fluidized medium pipeline is 0.5-1.2 times of the powder equivalent fluidization wind speed.
Furthermore, the central axis of the pressure-equalizing ring pipe coincides with the central axis of the powder bin body, and the plurality of supporting pipes are uniformly distributed at intervals along the circumferential direction of the pressure-equalizing ring pipe.
Furthermore, the pressure-equalizing ring pipe is an annular metal pipe, and the inner diameter of the pipe is greater than 20 mm; the diameter of the outer ring of the pressure-equalizing ring pipe is 0.5-0.8 times of the diameter of the cross section of the powder bin body corresponding to the height of the pressure-equalizing ring pipe; the supporting tube is a hollow metal tube, the inner diameter of the tube is larger than 15mm, and the wall thickness of the tube is larger than 2 mm.
By adopting the technical scheme, the invention has the following advantages:
1. the pressure-equalizing ring pipe is horizontally arranged inside the powder bin body through the plurality of supporting pipes, the bottom of the pressure-equalizing ring pipe is provided with the fluidized medium guiding-out structure, the supporting pipes are communicated with the fluidized medium pipeline positioned outside the powder bin body, the fluidized medium pipeline is connected with the fluidized medium supply source, the fluidization effect on powder at the central part of the powder bin body can be enhanced, the guiding-out structure is arranged downwards, and the powder is prevented from blocking the guiding-out structure.
2. According to the invention, the powder bin body is internally provided with the multiple layers of pressure-equalizing ring pipes at intervals from top to bottom, so that the fluidization uniformity in the vertical direction can be enhanced, and the effects of uniform, stable and continuous discharging of powder in the bin can be realized.
3. The pressure-equalizing ring pipe and the supporting pipe can be metal pipes, the fluidized medium pipeline can be a compressed gas hose, and the whole device has the advantages of simple structure, simplicity and convenience in operation and low manufacturing cost, and is favorable for popularization and application in actual production.
Drawings
FIG. 1 is a schematic structural view of a conventional powder bin;
FIG. 2 is a schematic front view of the present invention;
FIG. 3 is a schematic view of a partial structure of the present invention;
in the figure, 1, a powder bin body; 11. a cone section; 2. a pressure-equalizing ring pipe; 21. a circular seam; 3. supporting a tube; 4. a fluidized medium conduit; 5. a flow regulating valve; 6. a flow meter.
Detailed Description
The invention is described in detail below with reference to the figures and examples. It is to be understood, however, that the drawings are provided solely for the purposes of promoting an understanding of the invention and that they are not to be construed as limiting the invention.
As shown in fig. 2, the anti-blocking powder bin fluidization device provided by the invention comprises a powder bin body 1, a pressure-equalizing ring pipe 2, a support pipe 3 and a fluidization medium pipeline 4; the pressure-equalizing ring pipe 2 is horizontally arranged in the powder bin body 1 through a plurality of supporting pipes 3, one end of each supporting pipe 3 is communicated with the inner cavity of the pressure-equalizing ring pipe 2, the other end of each supporting pipe 3 is communicated with a fluidized medium pipeline 4, and the fluidized medium pipeline 4 is positioned outside the powder bin body 1 and is connected with a fluidized medium supply source (not shown in the figure); the bottom of the pressure-equalizing ring pipe 2 is provided with a fluidized medium leading-out structure.
In a preferred embodiment, in industrial application, according to the size of the powder bin body, a plurality of layers of pressure equalizing ring pipes 2 are arranged in the powder bin body 1 from top to bottom at intervals; every layer of pressure-equalizing ring pipe 2 is horizontally arranged in the powder bin body 1 through a plurality of supporting pipes 3, and fluidized medium pipelines 4 which are in one-to-one correspondence with the multiple layers of pressure-equalizing ring pipes 2 are arranged outside the powder bin body 1.
In a preferred embodiment, 2-4 layers of pressure-equalizing ring pipes 2 are arranged in the conical section 11 of the powder bin body 1 at intervals from top to bottom, and the diameters of the pressure-equalizing ring pipes 2 are reduced from top to bottom layer by layer.
In a preferred embodiment, 3 layers of pressure equalizing ring pipes 2 are arranged in the conical section part 11 of the powder bin body 1 at intervals from top to bottom; wherein, the pressure-equalizing ring pipe 2 at the top layer is arranged at the position 0.6-0.7 times of the vertical height of the conical section part 11 of the powder bin body 1, the pressure-equalizing ring pipe 2 at the middle layer is arranged at the position 0.4-0.5 times of the vertical height of the conical section part 11 of the powder bin body 1, and the pressure-equalizing ring pipe 2 at the bottom layer is arranged at the position 0.15-0.35 times of the vertical height of the conical section part 11 of the powder bin body 1.
In a preferred embodiment, 3 layers of pressure equalizing ring pipes 2 are arranged in the conical section part 11 of the powder bin body 1 at intervals from top to bottom; wherein, the pressure-equalizing ring pipe 2 at the top layer is arranged at the position 0.6 times the vertical height of the conical section part 11 of the powder bin body 1, the pressure-equalizing ring pipe 2 at the middle layer is arranged at the position 0.4 times the vertical height of the conical section part 11 of the powder bin body 1, and the pressure-equalizing ring pipe 2 at the bottom layer is arranged at the position 0.25 times the vertical height of the conical section part 11 of the powder bin body 1.
In a preferred embodiment, as shown in fig. 3, the fluidization medium outlet structure may be an annular slit 21 opening at the bottom of the pressure equalization pipe 2; or a plurality of lead-out seams or lead-out holes which are arranged at the bottom of the pressure equalizing ring pipe 2 and are uniformly distributed along the circumferential direction of the pressure equalizing ring pipe 2.
In a preferred embodiment, the central axis of the pressure equalizing ring pipe 2 coincides with the central axis of the powder bin body 1, and the plurality of support pipes 3 are uniformly spaced along the circumferential direction of the pressure equalizing ring pipe 2.
In a preferred embodiment, a flow control valve 5 and a flow meter 6 are provided on the fluidizing medium line 4 between the fluidizing medium supply source and the support tube 3; to facilitate the flow and velocity of the compressed air.
In a preferred embodiment, the flow regulating valve 5 and the flow meter 6 are arranged on the fluidized medium pipeline 4 in sequence along the flowing direction of the fluidized medium, and the pressure resistance requirement of the flow meter 6 can be reduced because the flow regulating valve 5 not only has the flow regulating function, but also has the pressure reducing function.
In a preferred embodiment, the fluidizing medium supply source can be a compressed air or inert gas source, and the gas flow rate in the fluidizing medium pipeline 4 is in the range of 0.5-1.2 times of the powder equivalent fluidizing wind speed;
in a preferred embodiment, the gas flow rate in the fluidizing medium pipeline 4 is in the range of 0.8-1 times of the powder equivalent fluidizing air speed.
In a preferred embodiment, the flow control valve 5 is a valve capable of continuously adjusting the gas flow, the range of the flow control valve 5 depends on the size of a powder bin, such as a coal powder bin with the diameter of 2m, and the flow meter can be selected from 2-20 m3The/h range.
In a preferred embodiment, the fluidizing medium line 4 can be a compressed air hose.
In a preferred embodiment, the support tube 3 is a hollow metal tube with a tube inner diameter of more than 15mm and a tube wall thickness of more than 2 mm.
In a preferred embodiment, the pressure equalizing ring pipe 2 is an annular metal pipe, and the inner diameter of the pipe is more than 20 mm; the diameter of the outer ring of the pressure equalizing ring pipe 2 is 0.5 to 0.8 times of the diameter of the cross section of the powder bin body 1 at the height,
in a preferred embodiment, the outer ring diameter of the pressure equalizing collar 2 is 0.8 times the cross-sectional diameter of the powder hopper body 1 at the level of the pressure equalizing collar.
In a preferred embodiment, the width of the annular slot or the lead-out slot is more than 2 mm; the outlet hole is in a hole structure of a circular shape, an oval shape or a rectangular shape.
The working principle of the invention is as follows:
when the device is operated, compressed air firstly passes through the flow regulating valve 5, the flow of the compressed air is regulated through the valve opening, and meanwhile, the flow regulating valve 5 plays a role in reducing pressure. Then the compressed air is sprayed out from the outlet direction of the powder bin 1 by a guide-out structure after sequentially passing through the flowmeter 6, the compressed air hose, the supporting tube 3 and the pressure-equalizing ring pipe 2, so as to play the roles of fluidizing and loosening the powder.
The present invention has been described with reference to the above embodiments, and the structure, arrangement, and connection of the respective members may be changed. On the basis of the technical scheme of the invention, the improvement or equivalent transformation of the individual components according to the principle of the invention is not excluded from the protection scope of the invention.
Claims (10)
1. The utility model provides an anti-blocking type powder storehouse fluidizer which characterized in that: comprises a powder bin body (1), a pressure equalizing ring pipe (2), a supporting pipe (3) and a fluidized medium pipeline (4); the pressure-equalizing ring pipe (2) is horizontally arranged in the powder bin body (1) through a plurality of supporting pipes (3); one end of each support pipe (3) is communicated with the inner cavity of the pressure equalizing ring pipe (2), and the other end of each support pipe (3) is communicated with the fluidized medium pipeline (4); the fluidized medium pipeline (4) is positioned outside the powder bin body (1) and is connected with a fluidized medium supply source; the bottom of the pressure-equalizing ring pipe (2) is provided with a fluidized medium leading-out structure.
2. The anti-blocking powder bin fluidizing device according to claim 1, wherein: multilayer pressure-equalizing ring pipes (2) are arranged in the powder bin body (1) at intervals from top to bottom, each layer of pressure-equalizing ring pipe (2) is horizontally arranged in the powder bin body (1) through a plurality of supporting pipes (3), and fluidized medium pipelines (4) which are in one-to-one correspondence with the multilayer pressure-equalizing ring pipes (2) are arranged outside the powder bin body (1).
3. The anti-blocking powder bin fluidizing device according to claim 1, wherein: 2-4 layers of the pressure-equalizing ring pipe (2) are arranged in the conical section part (11) of the powder bin body (1) at intervals from top to bottom, and the diameter of the pressure-equalizing ring pipe (2) is reduced layer by layer from top to bottom.
4. The anti-blocking powder bin fluidizing device according to claim 3, wherein: 3 layers of the pressure-equalizing ring pipes (2) are arranged in the conical section part (11) of the powder bin body (1) from top to bottom at intervals, wherein the pressure-equalizing ring pipe (2) positioned at the top layer is arranged at a position which is 0.6-0.7 times the vertical height of the conical section part (11) of the powder bin body (1), the pressure-equalizing ring pipe (2) positioned at the middle layer is arranged at a position which is 0.4-0.5 times the vertical height of the conical section part (11) of the powder bin body (1), and the pressure-equalizing ring pipe (2) positioned at the bottom layer is arranged at a position which is 0.15-0.35 times the vertical height of the conical section part (11) of the powder bin body (1).
5. The anti-blocking powder bin fluidizing device according to claim 1, wherein: the fluidized medium leading-out structure is an annular gap (21) formed at the bottom of the pressure equalizing ring pipe (2); or a plurality of lead-out seams or lead-out holes which are arranged at the bottom of the pressure-equalizing ring pipe (2) and are uniformly distributed along the circumferential direction of the pressure-equalizing ring pipe (2).
6. The anti-blocking powder bin fluidizing device according to claim 5, wherein: the width of the annular gap (21) or the derivation gap is more than 2 mm; the leading-out hole is a circular, oval or rectangular hole.
7. The anti-blocking powder bin fluidizing device according to claim 1, wherein: a flow regulating valve (5) and a flow meter (6) are arranged on the fluidized medium pipeline (4) between the fluidized medium supply source and the support pipe (3);
the flow regulating valve (5) and the flow meter (6) are sequentially arranged along the flowing direction of the fluidized medium; the flow regulating valve (5) adopts a valve capable of continuously regulating air quantity.
8. The anti-blocking powder bin fluidizing device according to claim 1, wherein: the fluidized medium supply source is compressed air or an inert gas source; the gas flow in the fluidized medium pipeline (4) is 0.5-1.2 times of the powder equivalent fluidization wind speed.
9. The anti-blocking powder bin fluidizing device according to any one of claims 1 to 4, wherein: the central axis of the pressure-equalizing ring pipe (2) coincides with the central axis of the powder bin body (1), and the supporting pipes (3) are uniformly distributed at intervals along the circumferential direction of the pressure-equalizing ring pipe (2).
10. The anti-blocking powder bin fluidizing device according to any one of claims 1 to 4, wherein: the pressure-equalizing ring pipe (2) is an annular metal pipe, and the inner diameter of the pipe is greater than 20 mm; the diameter of the outer ring of the pressure-equalizing ring pipe (2) is 0.5-0.8 times of the diameter of the cross section of the powder bin body (1) corresponding to the height of the pressure-equalizing ring pipe; the supporting tube (3) is a hollow metal tube, the inner diameter of the tube is larger than 15mm, and the wall thickness of the tube is larger than 2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010037278.1A CN111115034A (en) | 2020-01-14 | 2020-01-14 | Anti-blocking powder bin fluidizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010037278.1A CN111115034A (en) | 2020-01-14 | 2020-01-14 | Anti-blocking powder bin fluidizing device |
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| Publication Number | Publication Date |
|---|---|
| CN111115034A true CN111115034A (en) | 2020-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010037278.1A Pending CN111115034A (en) | 2020-01-14 | 2020-01-14 | Anti-blocking powder bin fluidizing device |
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| CN (1) | CN111115034A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295114A (en) * | 2010-06-24 | 2011-12-28 | 通用电气公司 | Feed tank and dry method feed system provided with feed tank |
| CN203497466U (en) * | 2013-08-21 | 2014-03-26 | 山西华泽铝电有限公司 | Dead material position cleaner for bunker |
| KR101651947B1 (en) * | 2015-04-03 | 2016-08-29 | 고등기술연구원연구조합 | Device for floating powder |
| CN205837655U (en) * | 2016-07-18 | 2016-12-28 | 陕西延长石油（集团）有限责任公司 | A kind of powder pressing blow device |
| CN107963350A (en) * | 2017-12-14 | 2018-04-27 | 四川有色金砂选矿药剂有限公司 | The anti-hanging purging structure of feed bin |
| CN109516006A (en) * | 2018-11-16 | 2019-03-26 | 马鞍山钢铁股份有限公司 | One plant feed bin blockage-clearing device and its application method |
| CN109703925A (en) * | 2018-12-27 | 2019-05-03 | 中核四0四有限公司 | A kind of pulverized fuel ash cement material pot blows bl bridge layer and method |
| CN208994368U (en) * | 2018-10-31 | 2019-06-18 | 山东齐胜工贸股份有限公司 | A kind of feed bin of desulfurizing agent |
-
2020
- 2020-01-14 CN CN202010037278.1A patent/CN111115034A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295114A (en) * | 2010-06-24 | 2011-12-28 | 通用电气公司 | Feed tank and dry method feed system provided with feed tank |
| CN203497466U (en) * | 2013-08-21 | 2014-03-26 | 山西华泽铝电有限公司 | Dead material position cleaner for bunker |
| KR101651947B1 (en) * | 2015-04-03 | 2016-08-29 | 고등기술연구원연구조합 | Device for floating powder |
| CN205837655U (en) * | 2016-07-18 | 2016-12-28 | 陕西延长石油（集团）有限责任公司 | A kind of powder pressing blow device |
| CN107963350A (en) * | 2017-12-14 | 2018-04-27 | 四川有色金砂选矿药剂有限公司 | The anti-hanging purging structure of feed bin |
| CN208994368U (en) * | 2018-10-31 | 2019-06-18 | 山东齐胜工贸股份有限公司 | A kind of feed bin of desulfurizing agent |
| CN109516006A (en) * | 2018-11-16 | 2019-03-26 | 马鞍山钢铁股份有限公司 | One plant feed bin blockage-clearing device and its application method |
| CN109703925A (en) * | 2018-12-27 | 2019-05-03 | 中核四0四有限公司 | A kind of pulverized fuel ash cement material pot blows bl bridge layer and method |
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Application publication date: 20200508 |