CN103736659B - Recirculating fluidized bed air flow screening device - Google Patents
Recirculating fluidized bed air flow screening device Download PDFInfo
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- CN103736659B CN103736659B CN201310749024.2A CN201310749024A CN103736659B CN 103736659 B CN103736659 B CN 103736659B CN 201310749024 A CN201310749024 A CN 201310749024A CN 103736659 B CN103736659 B CN 103736659B
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- valve
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- fluidized bed
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- screen drum
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- 238000012216 screening Methods 0.000 title claims abstract description 44
- 230000003134 recirculating effect Effects 0.000 title claims abstract description 27
- 239000004744 fabric Substances 0.000 claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 34
- 230000000740 bleeding effect Effects 0.000 claims description 19
- 238000007664 blowing Methods 0.000 claims description 16
- 238000011010 flushing procedure Methods 0.000 claims description 15
- 230000000903 blocking effect Effects 0.000 claims description 7
- 230000008676 import Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 2
- 238000005243 fluidization Methods 0.000 abstract description 9
- 239000002245 particle Substances 0.000 abstract description 2
- 239000000843 powder Substances 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- -1 as pollen pini Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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- Combined Means For Separation Of Solids (AREA)
Abstract
The invention discloses a kind of recirculating fluidized bed air flow screening device, this recirculating fluidized bed air flow screening device forms circulation canal by blower fan (1), circulation line I (2), screen drum (4), control valve (5), air inlet threeway (6), circulation line II (7), fluidisation state is formed under the action of high-speed airflow that material produces at blower fan, and in circulating line flow at high speed, fluidisation state material is when screen drum (4), the material that particle diameter is less than mesh size realizes screening fast with air-flow through screen cloth, and device structure is simple, output is large, efficiency is high.
Description
Technical field
The present invention relates to a kind of air flow screening device of powder material.
Background technology
Patent of invention ZL201010162941.7 discloses a kind of screening plant of powder material, this screening plant comprises the fluid bed main body forming fluidisation state for material, for the sieve plate net cage of screening materials carrying, make the circulatory system of fluidisation state Matter Transfer and for removing the blowback system etc. being deposited in and screen cloth blocking screen cloth material, this equipment has the following disadvantages: one is that Matter Transfer is bad, and sieve plate net cage dead angle place easily deposits material; Two is adopt sieve plate net cage to sieve, and by the restriction of screen area, screening speed is slow, and three is that this screening plant improves on boiling drier basis, complex structure.
Summary of the invention
It is simple that technical problem to be solved by this invention is to provide a kind of structure, and fluidisation state Matter Transfer is good, and screening speed is fast, the recirculating fluidized bed air flow screening device that output is high.
Technical scheme of the present invention is: a kind of recirculating fluidized bed air flow screening device, comprise blower fan, circulation line I, screen drum, control valve, air inlet threeway, circulation line II, described screen drum is used for airflow screening, screen drum comprises housing, inlet tube, outlet and screen cloth, housing is cylindrical shape, shell one end is communicated with inlet tube, the other end is communicated with outlet, screen cloth is cylindrical shape, screen cloth is arranged in housing, one end of screen cloth is communicated with inlet tube, the other end is communicated with outlet, housing also has the outlet of material gas, the outlet of material gas is for discharging screenings, fan outlet pressed by above-mentioned recirculating fluidized bed air flow screening device assembly, circulation line I, screen drum inlet tube, screen drum outlet, control valve, air inlet threeway, circulation line II, the sequential communication of fan inlet becomes circulation canal, circulation line I there is slag-drip opening, slag-drip opening is provided with residual cake valve, air inlet threeway also has a port to be air inlet, air inlet is provided with intake valve, circulation line II there is charge door, charge door is provided with charging valve.
Recirculating fluidized bed air flow screening device of the present invention is work like this: close residual cake valve and charging valve, open intake valve, start blower fan, enter screening plant continuously and high-speed circulating flowing in circulation canal in the effect downstream of blower fan by intake valve, portion gas is discharged through the outlet of material gas through the screen cloth in screen drum; Open charging valve to feed in raw material, material under the effect of high velocity air, form fluidisation state and in circulating line flow at high speed, the height of materials dispersion of fluidisation state in the gas flow, the material that particle diameter is less than mesh size is discharged through the outlet of material gas through screen cloth with air-flow, after having sieved, open residual cake valve, oversize is discharged through residual cake valve along with air-flow.
The material being greater than mesh size can be deposited in blocking screen mesh on screen cloth under airflow function, in order to remove the material of blocking screen mesh, as a modification of the present invention, screen drum is provided with back-blowing device, back-blowing device has two kinds of embodiments, and the first scheme of back-blowing device is made up of impulse electromagnetic valve, deflector and air bleeding valve, and impulse electromagnetic valve is arranged on housing, its outlet is communicated with enclosure interior, and import is connected with compressed air source; Deflector is arranged on the place of positive paired pulses electromagnetic valve outlet in housing, makes it directly can not blow to screen cloth for blocking compressed air, in order to avoid compressed air stream damages screen cloth; Air bleeding valve is arranged in the material gas outlet of housing, and while exhaust valve closure, impulse electromagnetic valve is opened, and passes into compressed air and carry out blowback to screen cloth in housing.The first scheme of back-blowing device is made up of back-flushing valve, blowback threeway and air bleeding valve, a port of blowback threeway exports with material gas and connects, another port connects with air bleeding valve, a port is also had to connect with back-flushing valve, the other end of back-flushing valve connects with compressed air source, while exhaust valve closure, back-flushing valve is opened, and passes into high pressure draught and carry out blowback to screen cloth in housing.
Screen drum of the present invention can be multiple, and multiple screen drum is connected between the circulation line I of circulation canal and control valve.
In order to prevent hard large granular materials from puncturing screen cloth, the preferred sintered meshwork of screen cloth, sintered meshwork is sintered by multilayer screen cloth and forms.
Recirculating fluidized bed air flow screening device of the present invention is applicable to the screening of powder material, as pollen pini, calcium powder etc.
Recirculating fluidized bed air flow screening device of the present invention adopts blower fan, circulation line I, screen drum, control valve, air inlet threeway, circulation line II to form circulation canal, fluidisation state material realizes screening in circulation canal internal circulation flow process, device structure is simple, fluidisation state Matter Transfer is good, the screen area of cylindrical shape is large, screening speed is fast, and output is high.
Accompanying drawing explanation
Fig. 1 is the structure chart of recirculating fluidized bed air flow screening device first embodiment of the present invention.
Fig. 2 is the sectional view of screen drum in Fig. 1.
Fig. 3 is the structure chart of recirculating fluidized bed air flow screening device second embodiment of the present invention.
Fig. 4 is the sectional view of screen drum in Fig. 2.
In figure, each Reference numeral is: 1, blower fan; 2, circulation line I; 3, residual cake valve; 4, screen drum; 5, control valve; 6, air inlet threeway; 7, circulation line II; 8, charging valve; 9, intake valve; 10, screen drum; 40, inlet tube; 41, housing; 42, impulse electromagnetic valve; 43, deflector; 45, air bleeding valve; 46, gas outlet is expected; 47, screen cloth; 49, outlet; 50, blowback threeway; 51, back-flushing valve.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described, but embodiment is not construed as limiting the invention.
First embodiment: a kind of recirculating fluidized bed air flow screening device.
See Fig. 1 and Fig. 2, this recirculating fluidized bed air flow screening device comprises blower fan 1, circulation line I 2, screen drum 4, control valve 5, air inlet threeway 6, circulation line II 7, above-mentioned recirculating fluidized bed air flow screening device assembly exports by blower fan 1, circulation line I 2, screen drum 4 inlet tube 40, screen drum 4 outlet 49, control valve 5, air inlet threeway 6, circulation line II 7, blower fan 1 import sequential communication become circulation canal; Circulation line I 2 there is slag-drip opening, slag-drip opening is provided with residual cake valve 3; Air inlet threeway 6 also has a port to be air inlet, air inlet is provided with intake valve 9; Circulation line II 7 there is charge door, charge door is provided with charging valve 8.
The screen drum 4 of this example is for airflow screening, screen drum 4 comprises housing 41, inlet tube 40, outlet 49 and screen cloth 47, housing 41 is cylindrical shape, and housing 41 one end is communicated with inlet tube 40, and the other end is communicated with outlet 49, screen cloth 47 is cylindrical shape, select sintered meshwork with material, screen cloth 47 is arranged in housing 41, and one end of screen cloth 47 is communicated with inlet tube 40, the other end is communicated with outlet 49, housing 41 also has material gas outlet 46; Screen drum 4 is also provided with back-blowing device, back-blowing device is made up of back-flushing valve 51, blowback threeway 50 and air bleeding valve 45, a port of blowback threeway 50 exports 46 with material gas and connects, another port connects with air bleeding valve 45, also have a port to connect with back-flushing valve 51, the other end of back-flushing valve 51 connects with compressed air source, while air bleeding valve 45 is closed, back-flushing valve 51 is opened, and passes into high pressure draught and carry out blowback to screen cloth 47 in housing 41.
Second embodiment: another kind of recirculating fluidized bed air flow screening device.
See Fig. 3 and Fig. 4, this recirculating fluidized bed air flow screening device comprises blower fan 1, circulation line I 2, screen drum 4, screen drum 10, control valve 5, air inlet threeway 6, circulation line II 7, above-mentioned recirculating fluidized bed air flow screening device assembly exports by blower fan 1, circulation line I 2, screen drum 4 inlet tube 40, screen drum 4 outlet 49, screen drum 10 inlet tube 40, screen drum 10 outlet 49, and the sequential communication of control valve 5, air inlet threeway 6, circulation line II 7, blower fan 1 import becomes circulation canal; Circulation line I 2 there is slag-drip opening, slag-drip opening is provided with residual cake valve 3; Air inlet threeway 6 also has a port to be air inlet, air inlet is provided with intake valve 9; Circulation line II 7 there is charge door, charge door is provided with charging valve 8.
The screen drum 4 of this example, screen drum 10 are screen drums that structure is identical, screen drum comprises housing 41, inlet tube 40, outlet 49 and screen cloth 47, housing 41 is cylindrical shape, and housing 41 one end is communicated with inlet tube 40, and the other end is communicated with outlet 49, screen cloth 47 is cylindrical shape, select sintered meshwork with material, screen cloth 47 is arranged in housing 41, and one end of screen cloth 47 is communicated with inlet tube 40, the other end is communicated with outlet 49, housing 41 also has material gas outlet 46; Screen drum is also provided with back-blowing device, and back-blowing device is made up of impulse electromagnetic valve 42, deflector 43 and air bleeding valve 45, and impulse electromagnetic valve 42 is arranged on housing 41, and its outlet is communicated with housing 41 inside, and import is connected with compressed air source; Deflector 43 is arranged on the place that in housing 41, positive paired pulses magnetic valve 42 exports, and makes it can not directly blow to screen cloth 47 for blocking compressed air, in order to avoid compressed air stream damages screen cloth 47; Air bleeding valve 45 is arranged in the material gas outlet 46 of housing 41, and while air bleeding valve 45 is closed, impulse electromagnetic valve 42 is opened, and passes into compressed air and carry out blowback to screen cloth 47 in housing 41.
Claims (7)
1. recirculating fluidized bed air flow screening device, it is characterized in that: described recirculating fluidized bed air flow screening device comprises blower fan, circulation line I, screen drum, control valve, air inlet threeway, circulation line II, described screen drum is used for airflow screening, screen drum comprises housing, inlet tube, outlet and screen cloth, housing is cylindrical shape, shell one end is communicated with inlet tube, the other end is communicated with outlet, screen cloth is cylindrical shape, screen cloth is arranged in housing, one end of screen cloth is communicated with inlet tube, the other end is communicated with outlet, housing also has the outlet of material gas, the outlet of material gas is for discharging screenings, fan outlet pressed by above-mentioned recirculating fluidized bed air flow screening device assembly, circulation line I, screen drum inlet tube, screen drum outlet, control valve, air inlet threeway, circulation line II, the sequential communication of fan inlet becomes circulation canal, circulation line I there is slag-drip opening, slag-drip opening is provided with residual cake valve, air inlet threeway also has a port to be air inlet, air inlet is provided with intake valve, circulation line II there is charge door, charge door is provided with charging valve.
2. recirculating fluidized bed air flow screening device according to claim 1, it is characterized in that: described screen drum is multiple, multiple screen drum is connected between the circulation line I of circulation canal and control valve.
3. the recirculating fluidized bed air flow screening device described in claim 1 or 2, is characterized in that: described screen cloth is sintered meshwork.
4. the recirculating fluidized bed air flow screening device described in claim 1 or 2, it is characterized in that: described screen drum is provided with back-blowing device, back-blowing device is made up of back-flushing valve, blowback threeway and air bleeding valve, a port of blowback threeway exports with material gas and connects, another port connects with air bleeding valve, also have a port to connect with back-flushing valve, the other end of back-flushing valve connects with compressed air source.
5. recirculating fluidized bed air flow screening device according to claim 3, it is characterized in that: described screen drum is provided with back-blowing device, back-blowing device is made up of back-flushing valve, blowback threeway and air bleeding valve, a port of blowback threeway exports with material gas and connects, another port connects with air bleeding valve, also have a port to connect with back-flushing valve, the other end of back-flushing valve connects with compressed air source.
6. the recirculating fluidized bed air flow screening device described in claim 1 or 2, it is characterized in that: described screen drum is provided with back-blowing device, back-blowing device is made up of impulse electromagnetic valve, deflector and air bleeding valve, impulse electromagnetic valve is arranged on housing, its outlet is communicated with enclosure interior, and import is connected with compressed air source; Deflector is arranged on the place of positive paired pulses electromagnetic valve outlet in housing, makes it directly can not blow to screen cloth for blocking compressed air, in order to avoid compressed air stream damages screen cloth; Air bleeding valve is arranged in the material gas outlet of housing.
7. recirculating fluidized bed air flow screening device according to claim 3, it is characterized in that: described screen drum is provided with back-blowing device, back-blowing device is made up of impulse electromagnetic valve, deflector and air bleeding valve, impulse electromagnetic valve is arranged on housing, its outlet is communicated with enclosure interior, and import is connected with compressed air source; Deflector is arranged on the place of positive paired pulses electromagnetic valve outlet in housing, makes it directly can not blow to screen cloth for blocking compressed air, in order to avoid compressed air stream damages screen cloth; Air bleeding valve is arranged in the material gas outlet of housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310749024.2A CN103736659B (en) | 2013-12-31 | 2013-12-31 | Recirculating fluidized bed air flow screening device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310749024.2A CN103736659B (en) | 2013-12-31 | 2013-12-31 | Recirculating fluidized bed air flow screening device |
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| Publication Number | Publication Date |
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| CN103736659A CN103736659A (en) | 2014-04-23 |
| CN103736659B true CN103736659B (en) | 2015-11-18 |
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| CN201310749024.2A Expired - Fee Related CN103736659B (en) | 2013-12-31 | 2013-12-31 | Recirculating fluidized bed air flow screening device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101108380A (en) * | 2007-08-23 | 2008-01-23 | 梁学增 | Circular airflow screening machine for powder material |
| CN101844133A (en) * | 2010-05-05 | 2010-09-29 | 贾平 | Air flow screening device for micron-sized powder materials |
| CN202021156U (en) * | 2010-12-23 | 2011-11-02 | 国家粮食储备局成都粮食储藏科学研究所 | Device for repeated winnowing of grain impurities |
| CN202061817U (en) * | 2011-04-27 | 2011-12-07 | 陕西省农村科技开发中心 | Kiwi fruit pollen separator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3924619B2 (en) * | 2003-10-27 | 2007-06-06 | 独立行政法人産業技術総合研究所 | Classification device |
| US8627960B2 (en) * | 2009-04-28 | 2014-01-14 | Mtd America Ltd (Llc) | Apparatus and method for separating materials using air |
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2013
- 2013-12-31 CN CN201310749024.2A patent/CN103736659B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101108380A (en) * | 2007-08-23 | 2008-01-23 | 梁学增 | Circular airflow screening machine for powder material |
| CN101844133A (en) * | 2010-05-05 | 2010-09-29 | 贾平 | Air flow screening device for micron-sized powder materials |
| CN202021156U (en) * | 2010-12-23 | 2011-11-02 | 国家粮食储备局成都粮食储藏科学研究所 | Device for repeated winnowing of grain impurities |
| CN202061817U (en) * | 2011-04-27 | 2011-12-07 | 陕西省农村科技开发中心 | Kiwi fruit pollen separator |
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| CN103736659A (en) | 2014-04-23 |
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Effective date of registration: 20151009 Address after: 675099 Yunnan Yi Autonomous Prefecture in Chuxiong province Chuxiong city Lucheng Zhenxiong road Regency Garden District building 42 room B-19 Applicant after: Chuxiong Bo Shan Science and Technology Ltd. Address before: 101, room 2, unit 1, 25 prosperous street, 651700 Yang Zhen Town, Songming County, Yunnan, Kunming Applicant before: Yang Guorong |
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Effective date of registration: 20180528 Address after: 650503 No. 6 building, standard factory base, Ma Jin Pu new water science and Technology Park, Kunming high tech Development Zone, Yunnan, China 102 Patentee after: Yunnan Shou Bio Technology Co., Ltd. Address before: 675099 B-19 room 42, Zhenxiong Road, Lijing Garden District, Lucheng, Chuxiong Yi Autonomous Prefecture, Yunnan Province, Chuxiong Patentee before: Chuxiong Bo Shan Science and Technology Ltd. |
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Granted publication date: 20151118 Termination date: 20181231 |