CN103736659A - Circulating fluidized bed airflow screening device - Google Patents
Circulating fluidized bed airflow screening device Download PDFInfo
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- CN103736659A CN103736659A CN201310749024.2A CN201310749024A CN103736659A CN 103736659 A CN103736659 A CN 103736659A CN 201310749024 A CN201310749024 A CN 201310749024A CN 103736659 A CN103736659 A CN 103736659A
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Abstract
The invention discloses a circulating fluidized bed airflow screening device. A fan (1), a circulating pipeline I (2), a screen drum (4), an adjusting valve (5), an air inlet tee joint (6) and a circulating pipeline II (7) form a circulating channel, materials are fluidized under the action of high-speed airflow generated by the fan and flow at a high speed in the circulating pipelines, the materials with particle sizes smaller than mesh sizes penetrate a mesh along with the airflow and are rapidly screened when the fluidized materials pass the screen drum (4), and the circulating fluidized bed airflow screening device is simple in structure and high in yield and efficiency.
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 that forms fluidisation state for material, for the sieve plate net cage of screening materials carrying, make the circulatory system of fluidisation state Matter Transfer and be deposited in blowback system stopping up on screen cloth screen cloth material etc. for removing, this equipment has the following disadvantages: the one, and Matter Transfer is bad, and place, sieve plate net cage dead angle easily deposits material; The 2nd, adopt sieve plate net cage to sieve, be subject to the restriction of screen area, screening speed is slow, and the 3rd, this screening plant improves on boiling drier basis, complex structure.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of simple in 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 for airflow screening, screen drum comprises housing, inlet tube, outlet and screen cloth, housing is cylindrical shell shape, housing one end is communicated with inlet tube, the other end is communicated with outlet, screen cloth is cylindrical shell shape, screen cloth is arranged in housing, one end of screen cloth is communicated with inlet tube, the other end is communicated with outlet, on housing, expect in addition gas outlet, the outlet of material gas is used for discharging screenings, above-mentioned recirculating fluidized bed air flow screening device assembly is pressed fan outlet, circulation line I, screen drum inlet tube, screen drum outlet, control valve, air inlet threeway, circulation line II, the order of blower fan import is communicated with into circulation canal, in circulation line I, there is slag-drip opening, residual cake valve is installed on slag-drip opening, in air inlet threeway, also having a port is air inlet, and intake valve is installed on air inlet, in circulation line II, there is charge door, charging valve is installed on charge door.
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, the effect downstream of blower fan by intake valve, enter continuously screening plant and in circulation canal high-speed circulating flow, portion gas is discharged through the outlet of material gas through the screen cloth in screen drum; Open charging valve reinforced, material forms fluidisation state and flow at high speed in circulating line under the effect of high velocity air, the height of materials of fluidisation state is dispersed in air-flow, particle diameter is less than the material of mesh size and through the outlet of material gas, discharges through screen cloth with air-flow, after having sieved, open residual cake valve, oversize is along with air-flow is discharged through residual cake valve.
The material that is 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, back-blowing device is installed on screen drum, back-blowing device has two kinds of embodiments, and the first scheme of back-blowing device is comprised 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, for blocking compressed air, makes it can not directly blow to screen cloth, in order to avoid compressed air stream damages screen cloth; The material gas that air bleeding valve is arranged on housing exports above, and in the time of exhaust valve closure, impulse electromagnetic valve is opened, and passes into compressed air screen cloth is carried out to blowback in housing.The first scheme of back-blowing device is comprised of back-flushing valve, blowback threeway and air bleeding valve, a port of blowback threeway joins with the outlet of material gas, another port and air bleeding valve join, also have a port and back-flushing valve to join, the other end and the compressed air source of back-flushing valve join, in the time of exhaust valve closure, back-flushing valve is opened, and passes into high pressure draught screen cloth is carried out to blowback in housing.
Screen drum of the present invention can be multiple, and multiple screen drums are connected between the circulation line I and control valve of circulation canal.
In order to prevent that hard large granular materials from puncturing screen cloth, the preferred sintered meshwork of screen cloth, sintered meshwork is formed by multilayer screen cloth sintering.
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 circulates in process and realizes and sieving in circulation canal, device structure is simple, fluidisation state Matter Transfer is good, the screen area of cylindrical shell 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 the first embodiment of the present invention.
Fig. 2 is the cutaway view of screen drum in Fig. 1.
Fig. 3 is the structure chart of recirculating fluidized bed air flow screening device the second embodiment of the present invention.
Fig. 4 is the cutaway 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, material gas outlet; 47, screen cloth; 49, outlet; 50, blowback threeway; 51, back-flushing valve.
The specific embodiment
Below in conjunction with drawings and Examples, the invention will be further described, but embodiment is not construed as limiting the invention.
The first embodiment: a kind of recirculating fluidized bed air flow screening device.
Referring to 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 by blower fan 1 export, the order of circulation line I 2, screen drum 4 inlet tubes 40, screen drum 4 outlets 49, control valve 5, air inlet threeway 6, circulation line II 7, blower fan 1 import is communicated with into circulation canal; In circulation line I 2, there is slag-drip opening, residual cake valve 3 is installed on slag-drip opening; In air inlet threeway 6, also having a port is air inlet, and intake valve 9 is installed on air inlet; In circulation line II 7, there is charge door, charging valve 8 is installed on charge door.
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 shell shapes, and housing 41 one end are communicated with inlet tube 40, and the other end is communicated with outlet 49, screen cloth 47 is cylindrical shell shapes, with material, select sintered meshwork, 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, expects in addition gas outlet 46 on housing 41; Screen drum 4 is also provided with back-blowing device, back-blowing device is comprised of back-flushing valve 51, blowback threeway 50 and air bleeding valve 45, a port of blowback threeway 50 joins with material gas outlet 46, another port and air bleeding valve 45 join, also have a port and back-flushing valve 51 to join, the other end and the compressed air source of back-flushing valve 51 join, when air bleeding valve 45 is closed, back-flushing valve 51 is opened, and passes into high pressure draught screen cloth 47 is carried out to blowback in housing 41.
The second embodiment: another kind of recirculating fluidized bed air flow screening device.
Referring to 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 by blower fan 1 export, circulation line I 2, screen drum 4 inlet tubes 40, screen drum 4 outlets 49, screen drum 10 inlet tubes 40, screen drum 10 outlets 49, the order of control valve 5, air inlet threeway 6, circulation line II 7, blower fan 1 import is communicated with into circulation canal; In circulation line I 2, there is slag-drip opening, residual cake valve 3 is installed on slag-drip opening; In air inlet threeway 6, also having a port is air inlet, and intake valve 9 is installed on air inlet; In circulation line II 7, there is charge door, charging valve 8 is installed on charge door.
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 shell shapes, and housing 41 one end are communicated with inlet tube 40, and the other end is communicated with outlet 49, screen cloth 47 is cylindrical shell shapes, with material, select sintered meshwork, 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, expects in addition gas outlet 46 on housing 41; Screen drum is also provided with back-blowing device, and back-blowing device is comprised of impulse electromagnetic valve 42, deflector 43 and air bleeding valve 45, and impulse electromagnetic valve 42 is arranged on housing 41, its outlet and housing 41 internal communication, and import is connected with compressed air source; Deflector 43 is arranged on the place that the interior positive paired pulses magnetic valve 42 of housing 41 exports, and for blocking compressed air, makes it can not directly blow to screen cloth 47, 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 when air bleeding valve 45 is closed, impulse electromagnetic valve 42 is opened, and passes into compressed air screen cloth 47 is carried out to blowback 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 for airflow screening, screen drum comprises housing, inlet tube, outlet and screen cloth, housing is cylindrical shell shape, housing one end is communicated with inlet tube, the other end is communicated with outlet, screen cloth is cylindrical shell shape, screen cloth is arranged in housing, one end of screen cloth is communicated with inlet tube, the other end is communicated with outlet, on housing, expect in addition gas outlet, the outlet of material gas is used for discharging screenings, above-mentioned recirculating fluidized bed air flow screening device assembly is pressed fan outlet, circulation line I, screen drum inlet tube, screen drum outlet, control valve, air inlet threeway, circulation line II, the order of blower fan import is communicated with into circulation canal, in circulation line I, there is slag-drip opening, residual cake valve is installed on slag-drip opening, in air inlet threeway, also having a port is air inlet, and intake valve is installed on air inlet, in circulation line II, there is charge door, charging valve is installed on charge door.
2. recirculating fluidized bed air flow screening device claimed in claim 1, is characterized in that: described screen drum is multiple, and multiple screen drums are connected between the circulation line I and control valve of circulation canal.
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 comprised of back-flushing valve, blowback threeway and air bleeding valve, a port of blowback threeway joins with the outlet of material gas, another port and air bleeding valve join, also have a port and back-flushing valve to join, the other end and the compressed air source of back-flushing valve join.
5. recirculating fluidized bed air flow screening device claimed in claim 3, it is characterized in that: described screen drum is provided with back-blowing device, back-blowing device is comprised of back-flushing valve, blowback threeway and air bleeding valve, a port of blowback threeway joins with the outlet of material gas, another port and air bleeding valve join, also have a port and back-flushing valve to join, the other end and the compressed air source of back-flushing valve join.
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 comprised 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, for blocking compressed air, makes it can not directly blow to screen cloth, 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 claimed in claim 3, it is characterized in that: described screen drum is provided with back-blowing device, back-blowing device is comprised 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, for blocking compressed air, makes it can not directly blow to screen cloth, 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 |
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| 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 |
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| CN201310749024.2A CN103736659B (en) | 2013-12-31 | 2013-12-31 | Recirculating fluidized bed air flow screening device |
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| CN103736659A true CN103736659A (en) | 2014-04-23 |
| CN103736659B CN103736659B (en) | 2015-11-18 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005125272A (en) * | 2003-10-27 | 2005-05-19 | National Institute Of Advanced Industrial & Technology | Classifier |
| 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 |
| US20110067569A1 (en) * | 2009-04-28 | 2011-03-24 | Mtd America Ltd (Llc) | Apparatus and Method for Separating Materials Using Air |
| 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 |
-
2013
- 2013-12-31 CN CN201310749024.2A patent/CN103736659B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005125272A (en) * | 2003-10-27 | 2005-05-19 | National Institute Of Advanced Industrial & Technology | Classifier |
| CN101108380A (en) * | 2007-08-23 | 2008-01-23 | 梁学增 | Circular airflow screening machine for powder material |
| US20110067569A1 (en) * | 2009-04-28 | 2011-03-24 | Mtd America Ltd (Llc) | Apparatus and Method for Separating Materials Using Air |
| 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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| CN103736659B (en) | 2015-11-18 |
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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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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20181231 |