CN2149983Y - Dry sorting device for giant air heavy-medium fluidized-bed - Google Patents

Dry sorting device for giant air heavy-medium fluidized-bed Download PDF

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Publication number
CN2149983Y
CN2149983Y CN 92236205 CN92236205U CN2149983Y CN 2149983 Y CN2149983 Y CN 2149983Y CN 92236205 CN92236205 CN 92236205 CN 92236205 U CN92236205 U CN 92236205U CN 2149983 Y CN2149983 Y CN 2149983Y
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CN
China
Prior art keywords
bed
separation chamber
scraper plate
drag conveyor
fluidized bed
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Expired - Fee Related
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CN 92236205
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Chinese (zh)
Inventor
陈清如
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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Priority to CN 92236205 priority Critical patent/CN2149983Y/en
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Publication of CN2149983Y publication Critical patent/CN2149983Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a dry separating device for a large air heavy-medium fluidized bed. The existing separating device has the defects of small processing capacity, low separating precision, difficult continuous operation, etc. In the utility model, a feed inlet 12 and a floating upward light material outlet 11 are arranged on both ends of a separating belt; the interior of a separating chamber is provided with a reasonable scraper conveyor 2 and an inner circulation device 7 for arranging heavy-medium in order to improve the separating precision and the processing capacity and to realize the purpose that the large bed continuously separates and runs. The utility model has the advantages of water free, low cost, large processing capacity, high precision, etc.

Description

Dry sorting device for giant air heavy-medium fluidized-bed
Utility model relates to the dense medium fluidized bed dry separation device of a kind of large-scale air, and it is to utilize the fluidization theory solid particle material especially coal to be carried out the device of sorting process.
Traditional coal preparation method mainly is a wet split, with water as medium.This method water consumption is big, and investment is high and easily cause serious environmental to pollute, and the sorting for drought and water shortage area coal simultaneously causes very big difficulty.
No. the 4194917th, United States Patent (USP) and Chinese patent CN87101056A disclose two kinds of fluid bed dry separation devices respectively.United States Patent (USP) is according to the chemical reactor principle No. 4194917, by making granular material become a fluid bed in the container intracavity elongated at, that horizontal direction is expanded; Simultaneously be furnished with movable scraping plate in the bed, the scraper plate shuttling movement forces the light material that floats over container intracavity top to an end motion enrichment, simultaneously according to chemical reactor principle heavy material to other end motion enrichment, thereby reach the material sorting purposes.The dense media that adds in the fluidized-bed layer in the assorting room is discharged outside the bed with heavy material, and the major defect of this fluid bed separation device is:
1, according to the sorting unit of chemical reactor principle design, the floating thing in upper strata is scraped by scraper plate, and lower floor's hypostasis is discharged in the gravity flow mode, has limited the disposal ability of this sorting unit greatly, makes it to satisfy the needs of industrialness production application.
2, this device adopts upper end, bed middle part feed, and light in the bed, heavy material is to two ends reverse movement method, makes the bed poor stability, and sharpness of separation reduces greatly.
3, this device adopts the atresia scraper plate to scrape the frivolous thing in top, makes disturbance serious height and the movement velocity that has also limited scraper plate simultaneously in fluid bed top to have reduced sharpness of separation and treating capacity.
4, de-mediated is reclaimed dense media and is difficult to guarantee sorting unit continuous sorting operation under given conditions outside bed.
Chinese patent CN87101056A " dressing coal with dry fluidized bed method and apparatus " mainly by anchor chain scraper plate output system, remove medium apparatus, fluid bed housing and air-distribution device and form.It is to make it in a certain density and the equally distributed fluid bed by the layering of density size having of mixing of air and fine grained material by the feed coal sent into by charging gear, and utilizes the anchor chain scraper plate imbedded in the bed to scrape the light thing of come-up and sinking weight to the two ends of bed respectively to reach sorting purposes.In this patent, because raw coal and dense media are delivered to an interior sorting band middle part via fluid bed top, thereby make the fluidizing stability at bed middle part reduce, shortened the sorting strip length, shorten the sorting time, sharpness of separation also reduces greatly; Anchor chain scraper plate output system all is embedded in the fluidized-bed layer, makes to scrape plate height and be restricted, and has influenced the disposal ability of separator; When if the scraper plate translational speed surpasses a certain limiting value, then can destroy the stability and the uniformity of fluidized-bed layer, cause the fluidized-bed layer disorder, cause that come-up cleaned coal and sinking spoil can pollute mutually in the sorting band, reduced sharpness of separation; Adopt atresia strand plate sinew adding strip structure in addition in the anchor chain scraper plate induction system, on rib, usually have cleaned coal to mix mutually with spoil; Adopt the garden loop chain to connect between the scraper plate, scraper plate sinks to contacting with air distribution plate easily, causes the air distribution plate damage.Above-mentioned reason all causes this device sharpness of separation to descend, and disposal ability such as can't improve at defective.
The utility model purpose is in order to solve the defective that above-mentioned fluid bed separation device exists, and improves the sharpness of separation of sorting unit and treating capacity and makes it to adapt to and satisfy the industrial applications needs and propose.
The purpose of utility model is finished by following technical solution:
1, according to Archimedes principle, material in the air dense medium fluidized bed that has been fluidized by the layering of density size, simultaneously, being fluidized material can move to the other end because of the end of pressure difference from bed, thereby feeding mouth and light thing discharge gate are set, thereby overcome the bed disturbance that causes because of at bed middle-end pan feeding in the sorting strap end portion of bed two relative side; Utilize the promotion of material self difference force under fluidized state, and the overflow characteristic of fluidisation material, making the light material of come-up move to opposite flank other end overflow voluntarily along the bed length direction from an end discharges, thereby the bed stability decreases of having avoided the motion because of the upper strata inside strake to cause, the defective that sharpness of separation reduces, and can improve bed sorting bandwidth, prolongation sorting time raising disposal ability.
2, for overcoming the defective that anchor chain scraper plate output system exists, utility model has adopted sinking heavy material drag conveyor.Drag conveyor is laterally settled, and its upper exposed contacts with bed above fluidized-bed layer and not, and the bed bottom is imbedded in the bottom; Drag conveyor with the motion of the perpendicular direction of the light material movement direction of come-up, discharge thereby bed bottom sinking heavy material scraped to sinking heavy material outlet.
3, move degradation defective under the bed disturbance that causes, the sharpness of separation for reducing scraper plate, and the dense media that makes as much as possible stays in fluidized-bed layer, utility model adopts double-stranded plate structure in drag conveyor, do not have rib on the carrier bar, can avoid mixing of light, heavy material effectively; Perforate according to certain rules on scraper plate can alleviate the disturbance that scraper plate causes effectively, suffered resistance during the minimizing scraper plate moves.Because scraper plate only moves in the bed bottom, can strengthen the height and the translational speed of scraper plate.Connect the fastening connection of employing nut at carrier bar and scraper plate, sink the damage air distribution plate to avoid scraper plate effectively; Can make simultaneously the dense media of parts of fine particle diameter pass on the scraper plate aperture stays in the bed.For improving disposal ability, drag conveyor of the present invention adopts the parallel running of Double-scraper.
4, scraped by scraper plate and can take a large amount of dense media and sinking heavy material in the process simultaneously out of and move away to be deposited on behind the air distribution plate with scraper plate and form on the fluidized bed body side surface that the dead band influences that scraper plate normally moves and problem such as sinking heavy material discharge rate for overcoming the sinking heavy material, utility model is set up a dense media internal circulation apparatus, thereby dense media is circulated in sorting unit, to reduce the outer circulation amount of dense media effectively, improved the stability and the continuous operation ability of bed.
Below in conjunction with accompanying drawing the utility model most preferred embodiment is elaborated:
Fig. 1 is that utility model most preferred embodiment structure master looks schematic diagram
Fig. 2 is that schematic diagram is looked on the utility model most preferred embodiment structure right side
Fig. 3 is utility model most preferred embodiment double center chain plate-scraper plate connecting structure schematic diagram
Fig. 4 is a utility model most preferred embodiment intermediate plate structural representation
Fig. 5 is a utility model most preferred embodiment middle scraper structural representation
Fig. 6 is a utility model most preferred embodiment dense media internal circulation apparatus schematic diagram
As shown in Figure 1: flow through pipeline 6, air compartment 5 of compressed air enters in the air-distribution device 4 and enters in the fluid bed separation chamber 3 with certain speed after the homogenizing, and with bed in dense media form and to contact, after air velocity reached minimum fluidizing velocity, bed expansion formed the stable gas-solid fluidized bed bed 1 with certain density.
Known by Fig. 2 and Fig. 1: feed coal and small amount of supplemental dense media are sent in the bed 1 by a side of separation chamber 3 through feeding mouth 12, raw coal is pressed the layering of density size in bed 1, cleaned coal come-up spoil sinks, and the come-up cleaned coal is delivered to the light material discharge gate 11 of come-up along the lengthwise movement of fluid bed separation chamber 3 through refuse rotor 10 and discharged; In Fig. 1, the spoil that sinks down into bed 1 bottom is also scraped to 8 discharges of sinking heavy material discharge gate along bed base section dense media by the drag conveyor 2 of lateral arrangement simultaneously; Passing the air stream and the dust of fluidized-bed layer discharges from dedusting mouth 9.The upper exposed of drag conveyor 2 does not contact in bed 1 top and with bed 1; The bottom of drag conveyor 2 imbed bed 1 bottom and and 4 of air-distribution devices leave certain interval, do not contact mutually guaranteeing, in order to avoid damage air-distribution device 4; Know that by Fig. 3, Fig. 4 drag conveyor 2 adopts the parallel running of Double-scraper 20 structures, without rib.Wherein two carrier bars 18 connect through nut 19 and scraper plate 20; And tighten together by nut 19 and scraper plate 20 after 18 engagings of two carrier bars.For making dense media the least possible with the spoil discharge rate, in drag conveyor 2 bottoms, leave air-distribution device 4 between the sinking heavy material outlet 8, one dense media internal circulation apparatus 7 is set, scraped the dead band of section back generation so far so that overcome spoil by scraper plate, simultaneously can make dense media break away from spoil because of fluidisation and return in the fluidized-bed layer 1, reduce the dense media discharge rate at this place.
Known by Fig. 5 and Fig. 1: in drag conveyor 2, it is the aperture 22 of 6~13mm by equidistant fork row that scraper plate 20 all is drilled with diameter, so that scraper plate 20 reduces resistance in the moving process of bed bottom, and removes the part dense media.Scraper plate 20 and two carrier bars 18 are by nut 19 fastening connections, and it can prevent effectively that scraper plate 20 from sinking, and guarantees the effective clearance between scraper plate 20 and the air-distribution device 4.
Known by Fig. 6 and Fig. 1: dense media internal circulation apparatus 7 is horizontal discharge refuse end one sides that are placed in fluid bed separation chamber 3 with certain inclination angle.It mainly is made up of weave cotton cloth thing layer 16 and metal sintering plate 17 of blast pipe 13, surge chamber 14, screen layer 15, multilayer.Compressed air is flowed through after airduct 13 enters tubaeform surge chamber 14, air stream passes screen layer 15 respectively after slowing down, all pressing successively, weave cotton cloth thing layer 16 and metal sintering plate 17 enter in the separation chamber 3, this part air-flow makes spoil and the even once more fluidisation of dense media that is deposited in the dead band, the resistance of motion of scraper plate 20 is reduced, most of fine grained dense media come-up breaks away from the sinking spoil and reenters in the fluidized-bed layer 1, realize the interior circulation of dense media in separation chamber 3, thereby can realize long-term, stable continuous operation.
Utility model has sorting bandwidth, material sharpness of separation height, the advantages such as unit are, unit interval treating capacity are big, bed operation continous-stable. Under identical fluidized-bed layer area condition, disposal ability improves octuple than existing fluid bed separation device, and sharpness of separation is enhanced about more than once. Utility model be a kind of saving water resource, high sharpness of separation, protection of the environment, small investment, cost low, be easy to the large-scale sorting unit that industry is applied.

Claims (6)

1, the dense medium fluidized bed dry separation device of a kind of large-scale air, it mainly by fluid bed separation chamber 3, successively be coupled to separation chamber 3 lower ends air-distribution device 4, air compartment 5 and pipeline 6, be arranged on drag conveyor 2 in the separation chamber 3, be positioned at separation chamber's 3 horizontal sides sinking heavy material discharge gate 8, be positioned at the dedusting mouth 9 of separation chamber 3 upper ends and float light material discharge gate 11 and feeding mouth 12 are formed, it is characterized in that:
A: feeding mouth 12 and the light material discharge gate 11 of come-up are arranged on separation chamber's 3 two relative sides, and the light material outlet of come-up 11 places are equipped with a refuse rotor 10 in separation chamber 3.
B: drag conveyor 2 is the parallel runnings of Double-scraper structure; And drag conveyor 2 upper exposed are on fluidized-bed layer 1 top of separation chamber 3, and fluidized-bed layer 1 bottom is imbedded and to be installed in the separation chamber 3 with the perpendicular direction of motion of the light material movement direction of come-up in the bottom.
C: the horizontal side in separation chamber 3 is mounted with a dense media internal circulation apparatus 7 with certain inclination angle.
2, the dense medium fluidized bed dry method device of the described large-scale air of claim 1, it is characterized in that drag conveyor 2 be before and after carrier bar 18 and the scraper plate 20 of engaging through the nut 19 fastening compositions that connect.
3, the dense medium fluidized bed dry separation device of the described large-scale air of claim 1 is characterized in that the Double-scraper structure is made up of 2 groups of parallel carrier bars 18 and scraper plate 20 in the drag conveyor 2.
4, the dense medium fluidized bed dry separation device of the described large-scale air of claim 1 is characterized in that dense media internal circulation apparatus 7 mainly is made up of weave cotton cloth thing layer 16 and metal sintering plate 17 of blast pipe 13, tubaeform surge chamber 14, screen layer 15, multilayer.
5, claim 1, the dense medium fluidized bed dry separation device of 2 and 3 described large-scale airs is characterized in that the scraper plate 20 on the drag conveyor 2 all is drilled with the eyelet 22 of certain diameter.
6, claim 1 and the dense medium fluidized bed dry separation device of 5 described large-scale airs is characterized in that scraper plate 20 two ends eye 22 the diameter of holing is 6~13mm, and arrange by equidistant fork row.
CN 92236205 1992-10-16 1992-10-16 Dry sorting device for giant air heavy-medium fluidized-bed Expired - Fee Related CN2149983Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 92236205 CN2149983Y (en) 1992-10-16 1992-10-16 Dry sorting device for giant air heavy-medium fluidized-bed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 92236205 CN2149983Y (en) 1992-10-16 1992-10-16 Dry sorting device for giant air heavy-medium fluidized-bed

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CN2149983Y true CN2149983Y (en) 1993-12-22

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101844133A (en) * 2010-05-05 2010-09-29 贾平 Air flow screening device for micron-sized powder materials
CN102049350A (en) * 2009-10-26 2011-05-11 孙刚 Air dense medium dry separation device
CN101318182B (en) * 2008-06-11 2012-07-25 中国矿业大学 Modular coal preparation process and equipment based on gas-solid diphasic stream
CN105214956A (en) * 2015-10-28 2016-01-06 中国矿业大学 A kind of dense gas solid bed dry separation system and technique
CN105381950A (en) * 2015-10-19 2016-03-09 中国矿业大学 Large dry dense medium fluidized bed separation machine and separation system
CN108499863A (en) * 2018-03-16 2018-09-07 中国矿业大学 A kind of fluidization dry-type separation equipment for solid particle material sorting
CN110666099A (en) * 2019-10-21 2020-01-10 北京仁创砂业铸造材料有限公司 Special sand separating device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101318182B (en) * 2008-06-11 2012-07-25 中国矿业大学 Modular coal preparation process and equipment based on gas-solid diphasic stream
CN102049350A (en) * 2009-10-26 2011-05-11 孙刚 Air dense medium dry separation device
CN101844133A (en) * 2010-05-05 2010-09-29 贾平 Air flow screening device for micron-sized powder materials
CN101844133B (en) * 2010-05-05 2012-09-05 贾平 Air flow screening device for micron-sized powder materials
CN105381950A (en) * 2015-10-19 2016-03-09 中国矿业大学 Large dry dense medium fluidized bed separation machine and separation system
CN105381950B (en) * 2015-10-19 2018-06-15 中国矿业大学 A kind of large size dry method dense media fluid-bed separator and separation system
CN105214956A (en) * 2015-10-28 2016-01-06 中国矿业大学 A kind of dense gas solid bed dry separation system and technique
CN108499863A (en) * 2018-03-16 2018-09-07 中国矿业大学 A kind of fluidization dry-type separation equipment for solid particle material sorting
CN110666099A (en) * 2019-10-21 2020-01-10 北京仁创砂业铸造材料有限公司 Special sand separating device

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C15 Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993)
RN01 Renewal of patent term
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee