CN204220486U - Raw coal dry separation system - Google Patents

Raw coal dry separation system Download PDF

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Publication number
CN204220486U
CN204220486U CN201420575354.4U CN201420575354U CN204220486U CN 204220486 U CN204220486 U CN 204220486U CN 201420575354 U CN201420575354 U CN 201420575354U CN 204220486 U CN204220486 U CN 204220486U
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China
Prior art keywords
raw coal
dry
coal
belt
dressing machine
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CN201420575354.4U
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Chinese (zh)
Inventor
李峰
刘长辉
高飞
胡方逵
赵绍民
陈志刚
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CHONGQING WANSHENG COAL Co Ltd
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CHONGQING WANSHENG COAL Co Ltd
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Abstract

The utility model discloses a kind of raw coal dry separation system, comprise reciprocal feeder and raw coal belt-conveying mechanism, the below of the end of raw coal belt conveyer is provided with raw coal sizing screen, double deck screen is provided with in raw coal sizing screen, the screenings of raw coal sizing screen enters cleaned coal belt-conveying mechanism, the oversize of raw coal sizing screen all enters dry-dressing machine by belt conveyer, the air outlet of the dust shield above dry-dressing machine is connected with sack cleaner with cyclone dust collectors respectively, cyclone dust collectors are separated the coal dust obtained and enter cleaned coal belt-conveying mechanism with sack cleaner, the below of dry-dressing machine is provided with air intake distributing pipe, air intake distributing pipe is connected with blower export, blower inlet is connected with cyclone dust collectors exhaust outlet, the gangue outlet of dry-dressing machine is connected with slag breaker, slag breaker outlet is connected with gangue belt conveyor.The utility model reduces the operating pressure of dry-dressing machine, reduces the discharge of coal dust, increases slag breaker and carries out fragmentation to gangue, improve the gangue thermal efficiency.

Description

Raw coal dry separation system
Technical field
The utility model relates to a kind of raw coal dry separation system.
Background technology
At present, dry coal preparation industry is main, and based on air table and jigging machine, energy consumption is low, and require that air quantity is large, separating effect is poor, and dust pelletizing system is huge, and energy consumption is high.
For above problem, Chinese patent 00268128.5 discloses a kind of combined compound sorting unit by dry method, this device comprises belt conveyor, compound dry separator, sack cleaner, batcher, surge bunker, air-introduced machine, centrifugal blower etc., this device cleaner is simple, but from the exhaust outlet of cyclone dust collectors gas out, still there is part coal dust, still there is pollution caused by coal dust problem.Secondly, the particle diameter of the gangue exporting out from the gangue of dry-dressing machine is large, is unfavorable for flammability in boiler.
Utility model content
For existing problem, the purpose of this utility model is to provide a kind of coal dust problem when more effectively can avoid dry separation, by raw coal dry separation system broken further for gangue.
To achieve these goals, the technical solution of the utility model is: a kind of raw coal dry separation system, comprise reciprocal feeder and raw coal belt-conveying mechanism, it is characterized in that: the below of the end of described raw coal belt conveyer is provided with raw coal sizing screen, double deck screen is provided with in described raw coal sizing screen, the screenings of described raw coal sizing screen enters cleaned coal belt-conveying mechanism, the oversize of described raw coal sizing screen all enters dry-dressing machine by belt conveyer, the air outlet of the dust shield above described dry-dressing machine is connected with sack cleaner with cyclone dust collectors respectively, described cyclone dust collectors are separated the coal dust obtained and enter cleaned coal belt-conveying mechanism with sack cleaner, the below of described dry-dressing machine is provided with air intake distributing pipe, described air intake distributing pipe is connected with the outlet of air blast, the import of described air blast is connected with the top exhaust outlet of cyclone dust collectors, the cleaned coal outlet of described dry-dressing machine is connected with cleaned coal belt-conveying mechanism with middle coal export, the gangue outlet of described dry-dressing machine is connected with slag breaker import, described slag breaker outlet is connected with gangue belt conveyor.
Adopt technique scheme, by raw coal sizing screen before dry-dressing machine, by raw coal through classifying screen, the lower tiny raw coal of sieve directly enters cleaned coal belt conveyer, and oversize enters dry-dressing machine dry separation, reduces dry-dressing machine pressure, reduces coal dust.Dry-dressing machine arranges air intake distributing pipe, the dust shield of top connects cyclone dust collectors and sack cleaner, and dust pelletizing system is simple, takes up an area little.Further, the air-flow that the exhaust outlet on the top of cyclone dust collectors is got rid of enters air intake distributing pipe by air blast, is again used in dry-dressing machine by this dust-contained airflow, avoids the discharge of dust-contained airflow, reduce pollution caused by coal dust.In addition, be first broken into below 20mm through slag breaker from dry-dressing machine gangue out, then enter gangue belt conveyer, the gangue after fragmentation enters boiler combustion again, can improve efficiency of combustion.
In technique scheme: the outlet of described sack cleaner is connected with air-introduced machine.
In technique scheme: the head upper of described raw coal sizing screen is provided with head chute, described head chute is positioned at the below of the end of raw coal belt conveyer, the front chute of sieve is provided with before the sieve of described raw coal sizing screen, before described sieve, chute is positioned at the top of the initiating terminal of belt conveyer, and the below of described raw coal sizing screen is provided with the lower chute of sieve.Chute is set, can coal dust be reduced.
In technique scheme: the top of the charging aperture of described dry-dressing machine is provided with chute, described chute is positioned at the below of the end of belt conveyer.The coal dust in course of conveying can be reduced like this.
In technique scheme, as preferably: the diameter 80mm of the sieve aperture of the upper sieve in described raw coal sizing screen, the sieve diameter of lower screen is 30mm.
The beneficial effects of the utility model are: the utility model first carried out classifying screen before raw coal enters dry-dressing machine, and reduce the operating pressure of dry-dressing machine, the dust excluding hood of dry-dressing machine is connected with sack cleaner with cyclone dust collectors, and cleaner floor space is little.The gas that cyclone dust collectors top exhaust outlet is discharged enters dry-dressing machine by air blast, air intake distributing pipe, so circulates, greatly reduces the discharge of coal dust.Finally, the utility model increases slag breaker and carries out fragmentation to gangue, improves the efficiency of combustion of gangue, improves the thermal efficiency.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is further described:
Embodiment 1
As shown in Figure 1, raw coal dry separation system of the present utility model is made up of parts such as chute 14, chute 15, auger strippers 16 before reciprocal feeder 1, raw coal belt-conveying mechanism 2, raw coal sizing screen 3, cleaned coal belt-conveying mechanism 4, belt conveyer 5, dry-dressing machine 6, cyclone dust collectors 7, sack cleaner 8, air blast 9, slag breaker 10, gangue belt conveyor 11, air-introduced machine 12, head chute 13, sieve.
Be transported to raw coal sizing screen 3 from coalpit coal out through reciprocal feeder 1 and raw coal belt-conveying mechanism 2 to sieve, double deck screen 31,32 is provided with in raw coal sizing screen 3, the diameter of the sieve aperture of the upper sieve 31 in raw coal sizing screen 3 is 80mm, and the sieve diameter of lower screen 32 is 30mm.The head upper of raw coal sizing screen 3 is provided with head chute 13, head chute 13 is positioned at the below of the end of raw coal belt conveyer 2, the front chute 14 of sieve is provided with before the sieve of raw coal sizing screen 3, before sieve, chute 14 is positioned at the top of the initiating terminal of belt conveyer 5, the below of raw coal sizing screen 3 is provided with the lower chute 33 of sieve, the lower chute 33 of sieve is positioned at the top of cleaned coal belt-conveying mechanism 4, and screenings is transported by cleaned coal belt-conveying mechanism 4 as cleaned coal.
The oversize of raw coal sizing screen 3 arrives belt conveyer 5 by chute before sieve 14, the below of the end of belt conveyer 5 is provided with chute 15, chute 15 is positioned at the top of the charging aperture of dry-dressing machine 6, oversize enters dry-dressing machine 6 again by chute 15, the structure of dry-dressing machine 6 is prior art, does not repeat at this.The bottom of dry-dressing machine 6 has cleaned coal to export and middle coal export, cleaned coal outlet and middle coal export are provided with cleaned coal chute and middle coal chute, cleaned coal chute and middle coal chute are positioned at above cleaned coal belt conveyer 4, and cleaned coal outlet and middle coal export coal are out transported by cleaned coal belt conveyor 4.The front of dry-dressing machine 6 is provided with gangue outlet, the below of gangue outlet is provided with gangue chute 63, gangue chute 63 is positioned at the top of the charging aperture of slag breaker 10, and gangue is crushed to after below 20mm through slag breaker 10 and is transported to boiler combustion by gangue belt conveyor 11.
The top of dry-dressing machine 6 is provided with dust shield 61, below is provided with air intake distributing pipe 62, the air outlet of dust shield 61 is connected with sack cleaner 8 with cyclone dust collectors 7 respectively, and cyclone dust collectors 7 are separated the coal dust obtained and are transported to cleaned coal belt conveyor 4 by auger stripper 16 and coal dust chute and transport with sack cleaner 8.The outlet of sack cleaner 8 is connected with air-introduced machine 12.
Cyclone dust collectors 7 are two, one for subsequent use, the exhaust outlet on cyclone dust collectors 7 top is connected with air blast 9 import by pipeline, the outlet of air blast 9 is connected with air intake distributing pipe 62, thus cyclone dust collectors 7 exhaust outlet ash-laden gas is out recycled in dry-dressing machine again, reduce the discharge of coal dust, reduce to pollute.
More than describe preferred embodiment of the present utility model in detail.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to design of the present utility model without the need to creative work.Therefore, all technical staff in the art according to design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should by the determined protection domain of claims.

Claims (5)

1. a raw coal dry separation system, comprise reciprocal feeder (1) and raw coal belt-conveying mechanism (2), it is characterized in that: the below of the end of described raw coal belt conveyer (2) is provided with raw coal sizing screen (3), described raw coal sizing screen is provided with double deck screen (31 in (3), 32), the screenings of described raw coal sizing screen (3) enters cleaned coal belt-conveying mechanism (4), the oversize of described raw coal sizing screen (3) all enters dry-dressing machine (6) by belt conveyer (5), the air outlet of the dust shield (61) of described dry-dressing machine (6) top is connected with sack cleaner (8) with cyclone dust collectors (7) respectively, described cyclone dust collectors (7) are separated with sack cleaner (8) coal dust obtained and enter cleaned coal belt-conveying mechanism (4), the below of described dry-dressing machine (6) is provided with air intake distributing pipe (62), described air intake distributing pipe (62) is connected with the outlet of air blast (9), the import of described air blast (9) is connected with the exhaust outlet on cyclone dust collectors (7) top, the cleaned coal outlet of described dry-dressing machine (6) is connected with cleaned coal belt-conveying mechanism (4) with middle coal export, the gangue outlet of described dry-dressing machine (6) is connected with slag breaker (10) import, described slag breaker (10) outlet is connected with gangue belt conveyor (11).
2. raw coal dry separation system according to claim 1, is characterized in that: the outlet of described sack cleaner (8) is connected with air-introduced machine (12).
3. raw coal dry separation system according to claim 1, it is characterized in that: the head upper of described raw coal sizing screen (3) is provided with head chute (13), described head chute (13) is positioned at the below of the end of raw coal belt conveyer (2), the front chute (14) of sieve is provided with before the sieve of described raw coal sizing screen (3), before described sieve, chute (14) is positioned at the top of the initiating terminal of belt conveyer (5), and the below of described raw coal sizing screen (3) is provided with the lower chute (33) of sieve.
4. raw coal dry separation system according to claim 1, it is characterized in that: the top of the charging aperture of described dry-dressing machine (6) is provided with chute (15), and described chute (15) is positioned at the below of the end of belt conveyer (5).
5. raw coal dry separation system according to claim 1, it is characterized in that: the diameter 80mm of the sieve aperture of the upper sieve (31) in described raw coal sizing screen (3), the sieve diameter of lower screen (32) is 30mm.
CN201420575354.4U 2014-09-30 2014-09-30 Raw coal dry separation system Active CN204220486U (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105521979A (en) * 2015-09-29 2016-04-27 芬欧汇川(中国)有限公司 Coal conveying system with dustproof equipment
CN105562366A (en) * 2016-01-05 2016-05-11 天津美腾科技有限公司 Intelligent dry separation main re-cleaning process and equipment
CN106179676A (en) * 2016-07-18 2016-12-07 淮南矿业(集团)有限责任公司 A kind of dry coal preparation and processing method
CN106865273A (en) * 2017-03-13 2017-06-20 贺春香 Material screening, lifting, loading system
CN110449259A (en) * 2019-08-20 2019-11-15 神华神东煤炭集团有限责任公司 Desliming device and desliming process
CN112090762A (en) * 2020-11-09 2020-12-18 天津美腾科技股份有限公司 Separation combination equipment and separation process

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105521979A (en) * 2015-09-29 2016-04-27 芬欧汇川(中国)有限公司 Coal conveying system with dustproof equipment
CN105562366A (en) * 2016-01-05 2016-05-11 天津美腾科技有限公司 Intelligent dry separation main re-cleaning process and equipment
CN106179676A (en) * 2016-07-18 2016-12-07 淮南矿业(集团)有限责任公司 A kind of dry coal preparation and processing method
CN106865273A (en) * 2017-03-13 2017-06-20 贺春香 Material screening, lifting, loading system
CN106865273B (en) * 2017-03-13 2019-04-26 湖南省福晶电子有限公司 Material screening, promotion, loading system
CN110449259A (en) * 2019-08-20 2019-11-15 神华神东煤炭集团有限责任公司 Desliming device and desliming process
CN112090762A (en) * 2020-11-09 2020-12-18 天津美腾科技股份有限公司 Separation combination equipment and separation process

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