CN102000666A - Air classifier matched with fluidized bed drying device - Google Patents
Air classifier matched with fluidized bed drying device Download PDFInfo
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- CN102000666A CN102000666A CN 201010555674 CN201010555674A CN102000666A CN 102000666 A CN102000666 A CN 102000666A CN 201010555674 CN201010555674 CN 201010555674 CN 201010555674 A CN201010555674 A CN 201010555674A CN 102000666 A CN102000666 A CN 102000666A
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- drying device
- fluidized bed
- ventilative board
- air classifier
- aspiration channel
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Abstract
The invention discloses an air classifier matched with a fluidized bed drying device, which comprises a classification hood, a suction hood and a suction pipe, wherein a material inlet, a material outlet and a dust removal port are arranged on the classification hood, a deflection plate is arranged at the lower end of the material inlet, an inclined ventilation plate is arranged inside the dust removal port, and the ventilation plate is provided with a ventilation slot; the classification hood is divided into a feeding zone, a dispersing zone and a discharging zone by the deflection plate and the ventilation plate from top to bottom; the dust removal port is connected with the suction hood; and one end of suction pipe is connected with the suction hood, and the other end of the suction pipe penetrates into a blast pipe of a dry type dust remover. Compared with the prior art, the invention has the advantages of energy saving, cost reduction, dust removal, classification, increased fluidized bed operation elasticity and the like.
Description
Technical field:
Gu the present invention relates to a kind of solid-device of gradation, specifically be a kind of and the supporting air classifier of fluidized bed drying device.
Background technology:
Fluidized bed drying device comprises fluid bed and dry collector, and main effect is that the wet granular material is dehydrated, and also plays the grading to dried particle simultaneously.During fluidized bed drying device work, swiftly flowing air is taken away the moisture of wet stock, simultaneously, also takes fine particle in the material to dust pelletizing system.To some degree, fluidized bed drying device also is an air classifier, and only the effectiveness of classification of this clasfficiator is not high.Reason: 1, the sectional area of the gas solid separation chamber in the fluid bed and exhaust main sectional area ratio are often very big.Gas solid separation is indoor, and not high from exhaust outlet distance local gas-solid distribution consistency degree far away, the moving air band of specific discharge is wet high, and it is not high to take away amounts of fine particles; 2, the primary function of fluid bed is the dry wet material, and blast, air quantity are regulated in the bed body can only need for drying effect.
In addition, the fluid bed discharging opening is generally an easy uncovered tube; For reasons such as assurance drying bed discharging smoothnesses, discharging opening often is malleation, and the disorderly spray everywhere of bulk cargo particle is not easy to particle collect, and also can bring dust to the production scene.
Summary of the invention
Technical problem to be solved by this invention is to increase air classifier in fluidized bed drying device, and the pneumatic power that utilisation system is existing is carried out classification to siccative, reaches the purpose of final dusting and stable discharging.Simultaneously, can save cost of investment and the operating cost that adopts independent air classifier.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of and supporting air classifier of fluidized bed drying device, comprise classification cover, suspended hood and aspiration channel, described classification cover is provided with charging aperture, discharging opening and dust mouth, be provided with deflecting plate in described charging aperture lower end, be provided with the inclination ventilative board in described dedusting mouth inside, offer ventilative groove on ventilative board, described classification cover is divided into feed zone, dispersion area and discharge zone from top to down by described deflecting plate and ventilative board; Connect described suspended hood at described dedusting mouth, described aspiration channel one end is connected with described suspended hood, and the other end of aspiration channel gos deep into the dry collector blast pipe to drying device.
Described aspiration channel is provided with a valve, and it is the duckbill access port that described aspiration channel gos deep into dry collector blast pipe one end.
Described inclination ventilative board is four and is arranged above and below that ventilative board and horizontal plane angle are 20-40 °, and the vertical arrangement pitches of ventilative board does not wait, and from top to bottom strengthens gradually, and adjacent spacing ratio is 1.0-1.5.
The present invention replaces the uncovered tube of the original discharging of fluid bed with specially designed air classifier, and with pipe, valve is connected it with the dry collector blast pipe, utilize the drying bed outlet to be convenient to the malleation of discharging and the pressure reduction that the interior negative pressure of dry collector blast pipe forms dexterously, the air-flow that produces separates thin siccative, makes thick siccative steadily not have splash ground simultaneously and flows out.Compared with prior art, the present invention have energy-conservation, reduce cost, advantage such as dedusting, classification, increase fluidized bed process elasticity.
Description of drawings
Fig. 1 is a drying bed outlet air classifier front view of the present invention.
Fig. 2 is a drying bed outlet air classifier side view of the present invention.
Fig. 3 is vitals among the present invention-ventilative board structural representation.
Wherein: 1, dry collector blast pipe; 2, duckbill access port; 3, valve; 4, aspiration channel; 5, suspended hood; 6,7,8,10, inclination ventilative board; 9, can open visor; 11, regulate the row's of keeping out the wind material plate automatically; 12, adjustable diameter and screw adjusting balancing weight; 13, bulk materials floss hole plate; 14, deflecting plate; 15, weir flow plate; 16, certified products material outlet; 17, drying bed body.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is elaborated:
As shown in Figure 1, a kind of and the supporting air classifier of fluidized bed drying device, comprise classification cover, suspended hood 5 and aspiration channel 4, described classification cover is provided with charging aperture, discharging opening and dust mouth, be provided with deflecting plate 14 in described charging aperture lower end, be provided with 6,7,8,10 4 of inclination ventilative boards in described dedusting mouth inside, offer ventilative groove on ventilative board, described classification cover is divided into feed zone, dispersion area and discharge zone from top to down by described deflecting plate and ventilative board; Connect described suspended hood at described dedusting mouth, described aspiration channel one end is connected with described suspended hood, and the other end of aspiration channel gos deep into the dry collector blast pipe to drying device.
At the beginning of 2009, applicant one branch company is in order to satisfy some specific salt market demands, design special producing technological process (EV11,12 salt pin salt slurry → special-purpose salts slurry bucket → special-purpose salt stock pump → fluid power gradation device → centrifuge → fluidizing drying bed → with the ingenious supporting air classifier → finished product of fluidized bed drying device) the dustless dry salt of production." with the ingenious supporting air classifier of fluidized bed drying device " all adopts stainless steel 304 materials to make; Inclination ventilative board quantity is four; The width of the narrow groove that mills out with milling cutter on the ventilative board is 8 ㎜.
After " with the ingenious supporting air classifier of fluidized bed drying device " drops into trial run, Dust Capacity significantly reduces in the finished product salt, drying bed periphery and dried salt belt carry the phenomenon that the interior dust of the factory building of distribution system fills the air thoroughly to be improved, and operator's labour intensity has obtained further reduction.This air classifier even running always one year over.(attached: air classifier is under-capitalized 10,000 yuans; The following Dust Capacity of 80 orders is reduced to 1.0% by 6.0% in the finished product salt; The product solid particulate distributions scope of utilizing this air classifier to produce is: 8～20 orders≤2.5%; 20～80 orders=96.5%～98.2%; Below 80 orders≤1.0%)
The operation principle and the course of work of the invention are described.
" with the ingenious supporting air classifier of fluidized bed drying device " utilizes the air-flow of the pressure reduction formation of air negative pressure in malleation that fluid bed outlet is convenient to discharging and the dry collector blast pipe to carry out classification dexterously.Air-flow with fully contacted by homodisperse dry material repeatedly, and, do not have the dead angle in the clasfficiator, strength is concentrated, dust very easily is pulled away.
Be divided into feed zone with the ingenious supporting air classifier of fluidized bed drying device, dispersion area, discharge zone, dust suction district (structure is seen Fig. 1, Fig. 2).
1. the feed zone feed zone is positioned at fluid bed weir flow plate rear for the A district in the diagram.Dried bulk cargo is fluidized the cold wind that a cold air chamber blows out and sends, and enters the feed zone of clasfficiator.The deflecting plate of feed zone is with the lead inclination ventilative board of dispersion area of material.
2. the dispersion area, dispersion area is the maximum region of air classifier for the B district in the diagram, is that fine granular materials is by the wind-force separate areas.The several piece ventilative board is arranged in this district.Mill out wide narrow groove with milling cutter on the ventilative board, groove staggered (as Fig. 3).The ventilative board width does not wait, and from top to bottom widens successively.Ventilative board tilts to install, and broadside and horizontal plane angle are about 30
Zero The vertical arrangement pitches of ventilative board does not wait, and from top to bottom strengthens gradually, and adjacent spacing ratio is about 1.2.The adjacent suspended hood of the ventilative board of topmost, its gap are controlled at 2～5 times of particle maximum particle diameter.The purpose that ventilative board so is set is to reduce the air-flow short circuit as much as possible, allow swiftly flowing air particle with contacted by the bulk cargo of classification is maximized.
During clasfficiator work, with first ventilative board of dry material guiding, the small part dry material is inhaled into fan housing by deflecting plate, and the material particles rising less than critical particle diameter enters the dust suction district.Most of dry material is leaked down by the groove of first ventilative board or the inclined-plane slides, and in the way that drops to second ventilative board, the partial material grit is brought into fan housing by air flowing.Material particles continues to be disperseed, and falls into the ventilative board of below successively, and is unrestrained along the groove on the inclined-plane.In the process of disperseing and falling, the material grit separates with being maximized and is inhaled into fan housing, enters the dust suction district then.Dotted arrow represents that the material dust moves towards with air-flow among Fig. 1, and solid arrow is represented the dry material trend.
3. the discharge zone discharge zone is for the C district in the diagram, and below bottom ventilative board, it is bucket-shaped to be awl.Discharge bucket is the self-regulating marker board that keeps out the wind (an abbreviation marker board) near fluidizing drying bed side.The marker board lower end can be equipped with the rotating shaft of bearing around top, 45
Zero Freely rotate in the scope; The aperture of marker board by the weight capacity that the adjustable diameter and screw adjusting balancing weight is regulated it, forms an automatic open close door according to supplied materials size decision aperture by by the decision of the dry material flow after the classification.Set up the purpose of marker board to be to prevent clasfficiator inner air and outer air crossfire, influence grading effect, simultaneously steady discharge prevents that the dry material particle from spraying everywhere, is convenient to the next procedure processing of gathering materials.The agglomerate material that fluid bed bottom bulk materials floss hole is regularly discharged also can freely pass through discharge bucket.
4. dust suction district, dust suction district, is made of suspended hood, aspiration channel, valve, duckbill access port and dry collector blast pipe according to the particulate dust trend in the top of clasfficiator successively for the D district in the diagram.The valve in dust suction district can be controlled overcurrent wind speed in the clasfficiator, thereby can regulate the size and the flow of the material grit that is separated, and regulates by the particle size distribution of classification dry material.Aspiration channel inserts exhaust duct with duckbill, make dust suction district outlet air draft to house steward's air draft to trend is consistent as far as possible, the air loss that causes because of cross-flow with reduction.
Claims (3)
- One kind with the supporting air classifier of fluidized bed drying device, it is characterized in that: comprise classification cover, suspended hood and aspiration channel, described classification cover is provided with charging aperture, discharging opening and dust mouth, be provided with deflecting plate in described charging aperture lower end, be provided with the inclination ventilative board in described dedusting mouth inside, offer ventilative groove on ventilative board, described classification cover is divided into feed zone, dispersion area and discharge zone from top to down by described deflecting plate and ventilative board; Connect described suspended hood at described dedusting mouth, described aspiration channel one end is connected with described suspended hood, and the other end of aspiration channel gos deep into the dry collector blast pipe to drying device.
- 2. according to claim 1 and the supporting air classifier of fluidized bed drying device, it is characterized in that: described aspiration channel is provided with a valve, and it is the duckbill access port that described aspiration channel gos deep into dry collector blast pipe one end.
- 3. according to claim 1 and 2 and the supporting air classifier of fluidized bed drying device, it is characterized in that: described inclination ventilative board is four and is arranged above and below, ventilative board and horizontal plane angle are 20-40 °, the vertical arrangement pitches of ventilative board does not wait, from top to bottom strengthen gradually, adjacent spacing ratio is 1.0-1.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010555674A CN102000666B (en) | 2010-11-24 | 2010-11-24 | Air classifier matched with fluidized bed drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010555674A CN102000666B (en) | 2010-11-24 | 2010-11-24 | Air classifier matched with fluidized bed drying device |
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| Publication Number | Publication Date |
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| CN102000666A true CN102000666A (en) | 2011-04-06 |
| CN102000666B CN102000666B (en) | 2012-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010555674A Active CN102000666B (en) | 2010-11-24 | 2010-11-24 | Air classifier matched with fluidized bed drying device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104474820A (en) * | 2014-11-21 | 2015-04-01 | 农业部南京农业机械化研究所 | Double-suction cyclone separator |
| CN104492706A (en) * | 2014-10-31 | 2015-04-08 | 中联重科股份有限公司 | Device and method for dispersing materials and removing dust, and air vibrating screen |
| CN115283254A (en) * | 2022-07-29 | 2022-11-04 | 中触媒新材料股份有限公司 | System and method for quickly screening and activating oxygen production adsorbent particle airflow |
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| CN2229843Y (en) * | 1995-10-20 | 1996-06-26 | 王金恒 | Circulation air flow type stone remover |
| CN2489884Y (en) * | 2001-05-25 | 2002-05-08 | 郝辉 | Static powder separating machine |
| CN2494712Y (en) * | 2001-06-25 | 2002-06-12 | 邝钜津 | Micropowder airflow separator |
| JP3492621B2 (en) * | 2000-10-24 | 2004-02-03 | 株式会社中山鉄工所 | Crushed sand fine powder classifier |
| CN1739869A (en) * | 2005-09-13 | 2006-03-01 | 郝志刚 | Material separator |
| CN201889292U (en) * | 2010-11-24 | 2011-07-06 | 江苏井神盐化股份有限公司 | Wind power classifier matched with fluidized bed drying device |
-
2010
- 2010-11-24 CN CN201010555674A patent/CN102000666B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2229843Y (en) * | 1995-10-20 | 1996-06-26 | 王金恒 | Circulation air flow type stone remover |
| JP3492621B2 (en) * | 2000-10-24 | 2004-02-03 | 株式会社中山鉄工所 | Crushed sand fine powder classifier |
| CN2489884Y (en) * | 2001-05-25 | 2002-05-08 | 郝辉 | Static powder separating machine |
| CN2494712Y (en) * | 2001-06-25 | 2002-06-12 | 邝钜津 | Micropowder airflow separator |
| CN1739869A (en) * | 2005-09-13 | 2006-03-01 | 郝志刚 | Material separator |
| CN201889292U (en) * | 2010-11-24 | 2011-07-06 | 江苏井神盐化股份有限公司 | Wind power classifier matched with fluidized bed drying device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104492706A (en) * | 2014-10-31 | 2015-04-08 | 中联重科股份有限公司 | Device and method for dispersing materials and removing dust, and air vibrating screen |
| CN104474820A (en) * | 2014-11-21 | 2015-04-01 | 农业部南京农业机械化研究所 | Double-suction cyclone separator |
| CN115283254A (en) * | 2022-07-29 | 2022-11-04 | 中触媒新材料股份有限公司 | System and method for quickly screening and activating oxygen production adsorbent particle airflow |
| CN115283254B (en) * | 2022-07-29 | 2023-08-25 | 中触媒新材料股份有限公司 | Rapid screening and activating system and method for air flow of oxygen-making adsorbent particles |
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| Publication number | Publication date |
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| CN102000666B (en) | 2012-10-17 |
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Address after: 223200 No. 1 Jingshen Road, Chuzhou District, Huaian City, Jiangsu Province Co-patentee after: Jiangsu Salt Industry Research Institute Co., Ltd. Patentee after: Jiangsu Yanjingshen Co., Ltd. Address before: 223200 No. 1 Jingshen Road, Chuzhou District, Huaian City, Jiangsu Province Co-patentee before: Jiangsu Salt Industry Research Institute Patentee before: Jiangsu Jingshen Salt & Chemical Industry Co., Ltd. |