CN103657835B - A kind of fluid distributor of liquid-solid fluid bed separation classification device - Google Patents
A kind of fluid distributor of liquid-solid fluid bed separation classification device Download PDFInfo
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- CN103657835B CN103657835B CN201310662543.5A CN201310662543A CN103657835B CN 103657835 B CN103657835 B CN 103657835B CN 201310662543 A CN201310662543 A CN 201310662543A CN 103657835 B CN103657835 B CN 103657835B
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- 239000012530 fluid Substances 0.000 title claims abstract description 139
- 239000007787 solid Substances 0.000 title claims abstract description 23
- 238000000926 separation method Methods 0.000 title claims abstract description 19
- 230000001174 ascending effect Effects 0.000 claims abstract description 13
- 239000002245 particle Substances 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims description 3
- 210000001124 body fluid Anatomy 0.000 claims description 2
- 239000010839 body fluid Substances 0.000 claims description 2
- 238000005243 fluidization Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 201000002282 venous insufficiency Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002365 multiple layer Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
A fluid distributor for liquid-solid fluid bed separation classification device, mainly comprises valve, fluid distrbution supervisor, ring arm, allotment pipe, buffer fluid distribution grid, discharge fluid distribution plate and lower barrel body; The allotment pipe that fluid distrbution supervisor is arranged by ring arm, the angle such as multiple is connected with lower barrel body, be provided with higher than fluid distrbution supervisor horizontal level in lower barrel body and have the multilayer buffer fluid distribution grid of vertical direction distribution hole and the discharge fluid distribution plate of back taper, underflow drainage conduit is positioned at lower barrel body center and runs through all buffer fluid distribution grids, with the underflow discharge valve phase wedging of lower barrel body bottom outside.Fluid distributor of the present invention has the ascending current providing uniform and stable, the function supporting bed weight, fluidization discharge underflow concurrently, structure is simple, compact, good stability, simple operation, significantly can improve even, the stability of liquid-solid fluid bed separation classification device ascending current and the discharge capacity of underflow product, improve separation performance.
Description
Technical field
The present invention relates to a kind of liquid-solid fluid bed fluid distributor, especially a kind of fluid distributor being applicable to the sorting of 1-0.25mm fine mineral and the liquid-solid fluid bed separation classification device of classification.
Background technology
Liquid-solid fluid bed separation machine is a kind of strengthening gravitational field separation classification device, effectively can realize the sorting classifying of 1-0.25mm fine grained mineral, successfully achieve industrialization.Its separating mechanism: material, under the effect of ascending current, forms the interference fluid bed with certain density gradient, is separated based on different grain size, density granule hindered falling speed difference; Low-density or fine fraction particle float, and become floating thing, high density or coarse fraction particles sink, become hypostasis.The fluid distributor of liquid-solid fluid bed separation classification device has concurrently and produces even ascending current, support the effect of whole bed and discharge underflow, is one of key factor affecting liquid-solid fluid bed separation classification device working effect.Chinese patent ZL200720037745.0 discloses a kind of fluid distributor, multitube distributor and lateral flow type distributor is adopted to combine, liquid distribution trough is responsible for by the fluid distrbution of Valve controlling, be responsible for fluid distrbution the ring arm that is connected and allotment pipe is formed, above every root arm, offer the apopore of some horizontal directions.But there is following problem in this fluid distributor: (1) is greater than the arm away from supervisor's flow inlet near the arm flow intensity being responsible for flow inlet, on every root arm, apopore flow intensity near supervisor is greater than the apopore away from supervisor, causes the water-flow equation on whole cylinder cross section uneven; (2) the perforate direction of fluid distributor arm is horizontal direction, but assorting room needs uniform ascending current, therefore the current of apopore ejection need regular hour and spatial alternation to be upwelling, and inevitable segment fluid flow is transformed to sinking simultaneously, are unfavorable for the stable of ascending current; (3) with certain initial velocity when pan feeding enters liquid-solid fluid bed cylinder by upper feeding bucket, due to effect of inertia, the low-density particles that should float all can a sedimentation downwards segment distance, especially the low-density particles settling height that granularity is thicker is larger, once this part low-density particles is settled down to below fluid distributor horizontal branch pipe, just can not sorting again above Returning fluid distributor again, but directly enter underflow hypostasis and be lost in mine tailing, have impact on separating effect; (4) high density granular is collected by back taper tail coal guiding gutter and is discharged, because tail coal guiding gutter is positioned at below fluid distributor, the current fed are very weak to this part particle generation effect, along with sorting is carried out, high density granular is constantly accumulated, and presses tighter and tighter, moisture is more and more lower, underflow discharge gate may be caused to block, and underflow can not be discharged smoothly, affects carrying out continuously of assorting room.All there are the problems referred to above in the published patent of invention about liquid-solid fluid bed separation classification device (notification number CN101804382A, notification number CN101850293A and CN102205262A).
Summary of the invention
Technical problem: the object of the invention is for problems of the prior art, provide compact single, the feedwater of a kind of structure letter evenly, smooth and easy stable, the fluid distributor that can improve the liquid-solid fluid bed separation classification device of separating effect of underflow discharge.
Technical scheme: the fluid distributor of liquid-solid fluid bed separation classification device of the present invention, comprise the upper barrel body and lower barrel body that are integrated by Flange joint, lower barrel body inside center is provided with underflow drainage conduit, lower barrel body bottom outside is provided with the underflow discharge valve with underflow drainage conduit phase wedging, described lower barrel body outside is provided with the fluid distrbution supervisor with controlling uninterrupted valve, fluid distrbution supervisor is connected with and surrounds the lower barrel body fluid distrbution ring arm of a week, fluid distrbution ring arm is provided with multiple angle that waits and arranges the fluid distrbution allotment pipe be connected with lower barrel body, the position that horizontal plane is responsible for higher than fluid distrbution in the inside of lower barrel body is provided with buffer fluid distribution grid, the top of buffer fluid distribution grid is provided with the discharge fluid distribution plate of back taper, the vertex of a cone of discharge fluid distribution plate is connected with the top of underflow drainage conduit, described buffer fluid distribution grid and discharge fluid distribution plate all have the distribution hole of vertical direction.
Described multiple fluid distrbution allotment pipes waiting angle to arrange are preferably 2-16; Described multilayer buffer fluid distribution grid is preferably 1-3 layer; The conical surface of described back taper discharge fluid distribution plate and the angle of horizontal direction can regulate according to underflow discharge velocity, are preferably 10-40 °; The aperture of described distribution hole is preferably 0.25-0.5mm, and percent opening is preferably 25-55%;
Beneficial effect: owing to have employed technique scheme, the present invention compared with prior art tool has the following advantages:
1. fluid feeds in liquid-solid fluid bed staving by the fluid distrbution that is evenly arranged supervisor, ring arm and shunting allotment pipe, ensures fluid being uniformly distributed on whole staving cross section;
2. fluid flows through multilayer buffer fluid distribution grid and discharge fluid distribution plate, and reduce flow velocity and the turbulent extent of fluid, the opening direction of distribution hole is vertical direction simultaneously, ensures the even, stable of ascending fluid;
3. the discharge fluid distribution plate of back taper is while the whole bed of support, impulse force upwards can be provided for the particle depositing to bottom, play the effect of scanning, make the underflow product concentrated keep a kind of fluidized state simultaneously, be conducive to collection and the discharge of underflow materials, avoid underflow materials and constantly gather the blocking caused, thus make assorting room more smooth and easy, improve separating effect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the schematic diagram of the line arrangement of fluid distributor of the present invention.
Fig. 3 is the schematic diagram of the buffer fluid distribution grid of fluid distributor of the present invention.
In figure: 1-valve, 2-fluid distrbution is responsible for, 3-buffer fluid distribution grid, 4-discharge fluid distribution plate, 5-distribution hole, 6-upper barrel body, 7-flange, 8-underflow drainage conduit, 9-lower barrel body, 10-underflow discharge valve, 2-1-fluid distrbution ring arm, 2-2-fluid distrbution allotment pipe.
Detailed description of the invention
Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:
As shown in Figure 1, the fluid distributor of liquid-solid fluid bed separation classification device of the present invention, is formed primarily of staving, the valve 1 controlling fluid flow and liquid distributing pipes.Staving is connected as a single entity by flange 7 by upper barrel body 6 and lower barrel body 9, and the cross section of staving is circular or rectangle, is circular in Fig. 1; The inside of lower barrel body 9 is provided with higher than the position that fluid distrbution is responsible for 2 horizontal planes the buffer fluid distribution grid 3 that multiple-layer horizontal arranges, described multilayer buffer fluid distribution grid 3 is preferably 1-3 layer, is 2 layers in Fig. 1.The top of buffer fluid distribution grid 3 is provided with the discharge fluid distribution plate 4 of back taper, and the described conical surface of back taper discharge fluid distribution plate 4 and the angle of horizontal direction regulate according to discharge velocity, is preferably 10-40 °.The vertex of a cone of discharge fluid distrbution 4 and the inside center of lower barrel body 9, the underflow drainage conduit 8 running through buffer fluid distribution grid 3 are connected, and the bottom outside of lower barrel body 9 is provided with the underflow discharge valve 10 with underflow drainage conduit 8 phase wedging.Shown in Fig. 2, liquid distributing pipes with valve 1 fluid distrbution supervisor 2, be responsible for the shunting allotment pipe 2-2 that the 2 ring arm 2-1 be connected and the angle such as multiple arrange with fluid distrbution and forms, it is individual that the fluid distrbution allotment pipe 2-2 of described multiple layouts such as angles such as grade are preferably 2-16.Fluid distrbution supervisor 2, ring arm 2-1 and allotment pipe 2-2 are positioned at same level; In Fig. 2, fluid distrbution allotment pipe 2-2 is 8, and every two fluid distrbution allotment pipe 2-2 are evenly connected on fluid distrbution ring arm 2-1 with identical angle, and the other end is connected with the lower barrel body 9 of liquid-solid fluid bed staving.Shown in Fig. 3, described buffer fluid distribution grid 3 and discharge fluid distribution plate 4 all have the distribution hole 5 of vertical direction, described buffer fluid distribution grid 3 is preferably 0.25-0.5mm with the aperture of the distribution hole 5 of discharge fluid distribution plate 4, and percent opening is preferably 25-55%.
The course of work: the high-velocity flow squeezed into by pump is responsible for 2 by the fluid distrbution with valve 1 and is entered fluid distrbution ring arm 2-1, uniform divided flows is to 2-16 again, be 8 fluid distrbution allotment pipe 2-2 waiting angle to arrange in legend, in the final lower barrel body 9 all importing liquid-solid fluid bed staving, along with the water yield in lower barrel body 9 increases gradually, current move upward, through having 1 layer of buffer fluid distribution grid 3 of vertical direction distribution hole 5 and the uniform and cushioning effect of discharge fluid distribution plate 4, form the cross-sectional uniformity along staving, stable ascending current, and pass through the speed of the flow-control ascending current of control valve 1, in assorting room, density passes higher than the particle of fluid bed bed density the bottom that bed is settled down to lower barrel body 9 downwards, the inclination conical surface of discharge fluid distribution plate 4 is conducive to the collection of density underflow particle and water conservancy diversion enters underflow drainage conduit 8, the ascending current of discharge fluid distribution plate 4 can be scanned the high density granular sunk simultaneously, and make the underflow product concentrated keep a kind of fluidized state, prevent underflow product from depositing blocking, when opening underflow discharge valve 10, smooth discharge underflow product, ensures that assorting room carries out continuously, efficiently.
Claims (5)
1. the fluid distributor of a liquid-solid fluid bed separation classification device, comprise the upper barrel body (6) and lower barrel body (9) that are connected as one by flange (7), lower barrel body (9) inside center is provided with underflow drainage conduit (8), lower barrel body (9) bottom outside is provided with the underflow discharge valve (10) with underflow drainage conduit (8) phase wedging, it is characterized in that: described lower barrel body (9) outside is provided with fluid distrbution supervisor (2) with controlling uninterrupted valve (1), fluid distrbution supervisor (2) is connected with and surrounds the lower barrel body fluid distrbution ring arm (2-1) of (9) weeks, fluid distrbution ring arm (2-1) is provided with multiple angle that waits and arranges the fluid distrbution allotment pipe (2-2) be connected with lower barrel body (9), the position that (2) horizontal plane is responsible for higher than fluid distrbution in the inside of lower barrel body (9) is provided with buffer fluid distribution grid (3), the top of buffer fluid distribution grid (3) is provided with the discharge fluid distribution plate (4) of back taper, the vertex of a cone of discharge fluid distribution plate (4) is connected with the top of underflow drainage conduit (8), described buffer fluid distribution grid (3) and discharge fluid distribution plate (4) all have the distribution hole (5) of vertical direction, the high-velocity flow squeezed into by pump is responsible for (2) by the fluid distrbution with valve (1) and is entered fluid distrbution ring arm (2-1), uniform divided flows is to the fluid distrbution allotment pipe (2-2) waiting angle to arrange again, in the final lower barrel body (9) all importing liquid-solid fluid bed staving, along with the water yield in lower barrel body (9) increases gradually, current move upward, through having the buffer fluid distribution grid (3) of vertical direction distribution hole (5) and the uniform and cushioning effect of discharge fluid distribution plate (4), form the cross-sectional uniformity along staving, stable ascending current, and pass through the speed of the flow-control ascending current of control valve (1), in assorting room, density passes higher than the particle of fluid bed bed density the bottom that bed is settled down to lower barrel body (9) downwards, the inclination conical surface of discharge fluid distribution plate (4) is conducive to the collection of density underflow particle and water conservancy diversion enters underflow drainage conduit (8), the ascending current of discharge fluid distribution plate (4) can be scanned the high density granular sunk simultaneously, and make the underflow product concentrated keep a kind of fluidized state, prevent underflow product from depositing blocking, when opening underflow discharge valve (10), smooth discharge underflow product, guarantee assorting room is continuous, carry out efficiently.
2. the fluid distributor of liquid-solid fluid bed separation classification device according to claim 1, is characterized in that: multiple described fluid distrbution allotment pipe (2-2) of waiting angle to arrange is 2-16.
3. the fluid distributor of liquid-solid fluid bed separation classification device according to claim 1, is characterized in that: described buffer fluid distribution grid (3) is 1-3 layer.
4. the fluid distributor of liquid-solid fluid bed separation classification device according to claim 1, is characterized in that: the described conical surface of back taper discharge fluid distribution plate (4) and the angle of horizontal direction regulate according to discharge velocity, are 10-40 °.
5. the fluid distributor of liquid-solid fluid bed separation classification device according to claim 1, it is characterized in that: described buffer fluid distribution grid (3) is 0.25-0.5mm with the aperture of the distribution hole (5) of discharge fluid distribution plate (4), and percent opening is 25-55%.
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| CN201310662543.5A CN103657835B (en) | 2013-12-09 | 2013-12-09 | A kind of fluid distributor of liquid-solid fluid bed separation classification device |
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| CN201310662543.5A CN103657835B (en) | 2013-12-09 | 2013-12-09 | A kind of fluid distributor of liquid-solid fluid bed separation classification device |
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| CN103657835B true CN103657835B (en) | 2016-02-24 |
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| CN106927460A (en) * | 2015-12-30 | 2017-07-07 | 曾舟华 | Reaction accelerator and its application method that diamond is reclaimed |
| CN106391292A (en) * | 2016-10-31 | 2017-02-15 | 中国矿业大学 | Liquid-solid fluidized bed sorting machine and material sorting method employing same |
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| CN110302561B (en) * | 2019-06-19 | 2024-06-14 | 江苏哈工药机科技股份有限公司 | Buffer distribution structure of chromatographic column |
| CN110479473A (en) * | 2019-08-20 | 2019-11-22 | 中国恩菲工程技术有限公司 | The fluid uniform distribution device of fluidization screening installation |
| CN110882824B (en) * | 2019-11-07 | 2021-11-30 | 石门宝丰机械制造有限公司 | Interference bed separator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5397001A (en) * | 1988-01-27 | 1995-03-14 | Virginia Polytechnic Institute & State U. | Apparatus for the separation of hydrophobic and hydrophilic particles using microbubble column flotation together with a process and apparatus for generation of microbubbles |
| US6264040B1 (en) * | 1998-12-04 | 2001-07-24 | Michael J. Mankosa | Hindered-bed separator device and method |
| CN200960474Y (en) * | 2006-10-19 | 2007-10-17 | 武汉理工大学 | Mica powder grading machine |
| CN201052472Y (en) * | 2007-05-17 | 2008-04-30 | 中国矿业大学 | Liquid-solid fluid bed coarse slime size classification grading device |
| CN102698879A (en) * | 2012-05-09 | 2012-10-03 | 山东莱芜煤矿机械有限公司 | Flotation column special for floating fine flake graphite |
| CN203620769U (en) * | 2013-12-09 | 2014-06-04 | 中国矿业大学 | Fluid distributor of liquid-solid fluidized bed sorting and classifying equipment |
-
2013
- 2013-12-09 CN CN201310662543.5A patent/CN103657835B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5397001A (en) * | 1988-01-27 | 1995-03-14 | Virginia Polytechnic Institute & State U. | Apparatus for the separation of hydrophobic and hydrophilic particles using microbubble column flotation together with a process and apparatus for generation of microbubbles |
| US6264040B1 (en) * | 1998-12-04 | 2001-07-24 | Michael J. Mankosa | Hindered-bed separator device and method |
| CN200960474Y (en) * | 2006-10-19 | 2007-10-17 | 武汉理工大学 | Mica powder grading machine |
| CN201052472Y (en) * | 2007-05-17 | 2008-04-30 | 中国矿业大学 | Liquid-solid fluid bed coarse slime size classification grading device |
| CN102698879A (en) * | 2012-05-09 | 2012-10-03 | 山东莱芜煤矿机械有限公司 | Flotation column special for floating fine flake graphite |
| CN203620769U (en) * | 2013-12-09 | 2014-06-04 | 中国矿业大学 | Fluid distributor of liquid-solid fluidized bed sorting and classifying equipment |
Non-Patent Citations (1)
| Title |
|---|
| 液固流化床分选粗煤泥的试验研究;沙杰等;《煤炭学报》;20120615;第37卷;第178-181页， * |
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Inventor after: Xie Guangyuan Inventor after: Tan Jiakun Inventor after: Wu Chengzhou Inventor after: Zhong Yagang Inventor after: Wang Wenlong Inventor after: Sun Yujin Inventor after: Shao Huaizhi Inventor after: Ni Chao Inventor after: Sha Jie Inventor after: Peng Yaoli Inventor after: Wu Ling Inventor after: Liu Bo Inventor after: Xu Guangqian Inventor after: Liang Long Inventor before: Xie Guangyuan Inventor before: Wu Chengzhou Inventor before: Zhong Yagang Inventor before: Wang Wenlong Inventor before: Sun Yujin Inventor before: Ni Chao Inventor before: Sha Jie Inventor before: Peng Yaoli Inventor before: Wu Ling Inventor before: Liu Bo Inventor before: Xu Guangqian Inventor before: Liang Long Inventor before: Tan Jiakun |
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