CN101804380B - High-efficiency environment-friendly type negative-pressure pneumatic transmission system for pebble coal - Google Patents
High-efficiency environment-friendly type negative-pressure pneumatic transmission system for pebble coal Download PDFInfo
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- CN101804380B CN101804380B CN 201010117919 CN201010117919A CN101804380B CN 101804380 B CN101804380 B CN 101804380B CN 201010117919 CN201010117919 CN 201010117919 CN 201010117919 A CN201010117919 A CN 201010117919A CN 101804380 B CN101804380 B CN 101804380B
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Abstract
The invention relates to pebble coal transmission equipment for a heat-engine plant, in particular to a high-efficiency environment-friendly type negative-pressure pneumatic transmission system for pebble coals. The system of the invention comprises a plurality of pebble coal buckets connected with a coal grinding machine, wherein the pebble coal buckets are connected with the respective branch pipeline through feeding devices; each branch pipeline is lead into a pebble coal bunker through a main pipeline; a dumping device is arranged at the bottom of the pebble coal bunker; an air outlet at the upper part of the pebble coal bunker is connected with a volume air blower through a dust remover; the branch pipelines and the main pipeline comprise a plurality of horizontal pipelines and ascending pipelines; a transmission air pipe communicated with the outside atmosphere is arranged on each ascending pipeline; and a blowing tuyere communicated with the outside atmosphere is arranged on each horizontal pipeline. The invention has stable operation, difficult clogging, little dust pollution, small noise and strong transmitting capacity.
Description
Technical field
The present invention relates to a kind of equipment that thermal power plant's stone coal is carried that is used for, specifically is a kind of high-efficiency environment-friendly type negative-pressure pneumatic transmission system for pebble coal.
Background technology
Medium-speed pulverizer is owing to small investment, good economy performance obtain widely applying in thermal power plant.Medium-speed pulverizer can produce the stone coal in running.The stone coal is mainly derived from big, the difficult spoil that grinds of density, pyrite etc. in the raw coal, and its stone coal floss hole from its underpart when coal pulverizer moves is discharged.The stone coal needs discharging in time; If stone coal discharging is untimely, bulk deposition in coal pulverizer causes scraper plate, carbon sealing wear easily or comes off; The stone coal of piling up also can stop up the air channel; Under the effect of hot blast, catch fire, coal pulverizer parts such as scaling loss air channel, scraper plate and stone coal bin cause the coal pulverizer fault to stop transport.
Common stone coal discharging has forms such as manual emission, waterpower discharging, mechanical transport discharging.At present; Because power plant's coal is changeable; The general variation of raw coal ature of coal, foreign material such as stone, spoil, ore increase than before in the raw coal, and stone coal discharge capacity increases greatly; Have a strong impact on the safe operation of thermal power plant, conventional stone coal discharging modes all are difficult to solve the problem that present stone coal amount increases greatly.
Recent domestic minority power plant handles the stone coal and has adopted air-transport system.Using the air-flow of motion to be the medium transport material, is the transportation resources of using already in the industry, is called strength and carries.The advantage of air-transport system is: simple in equipment, transfer efficiency is high, labour health condition is good.The conveyance conduit that strength is carried is provided with pipe network with being convenient to suit measures to local conditions, arranges easy to be flexibly, can make full use of the workshop area, is easy to adapt to workshop condition.
But there are a lot of problems in the air-transport system that is applied to the conveying of stone coal at present, mainly shows as: 1, the pipeline clogging takes place easily, do not dredge measure after the obstruction; 2, the scene still has dust to reveal, and the system failure is more; 3, system noise is very big, becomes the maximum noise source of power plant, is unfavorable for environmental protection; 4, system's conveying capacity is not high; 5, existing air-transport system generally adopts screw(-type) feeder as stone coal charging instrument, is difficult to carry for big particle diameter stone coal; 6, screw(-type) feeder is very easy to break down, also easy abrasion when carrying the stone coal as tumbler.
Summary of the invention
The present invention wants the technical solution problem to be, provide a kind of stable, be difficult for to stop up, dust pollution is little, noise is little, conveying capacity is strong high-efficiency environment-friendly type negative-pressure pneumatic transmission system for pebble coal.
High-efficiency environment-friendly type negative-pressure pneumatic transmission system for pebble coal of the present invention includes a plurality of stone coal bunkers that are connected with coal pulverizer; The stone coal bunker is connected with separately tap line through pay-off; Each tap line feeds the stone coal bunker through the main line pipeline; Stone coal bunker bottom is provided with device for discharging, and the air outlet on stone coal bunker top is connected with the volume blower fan through deduster; Said tap line and main line pipeline include plurality of sections horizontal pipe and increase in pipeline, and increase in pipeline is provided with the loose airduct that communicates with outside atmosphere, and horizontal pipe is provided with the purging air port that communicates with outside atmosphere.
The upper space of said stone coal bunker directly was connected with tap line through one period communicating pipe.
The housing of said stone coal bunker is provided with negative pressure relief valve.
Said volume blower fan outside is covered with blimp, has between sound insulation in the blimp outer setting, and in the air outlet of volume blower fan was arranged between sound insulation, the top had air vent between sound insulation; Said vent is provided with muffler and rainhat.
Pay-off between said stone coal bunker and the tap line includes a housing, and the top of housing is provided with the charging aperture that communicates with the stone coal bunker, and the housing rear end is provided with air inlet, and the housing front end is provided with the discharging opening that is connected with tap line; Housing inner chamber below charging aperture middle part is provided with the one-level plate that connects material; One-level connects material and is provided with an air inlet adjustment plate between plate and the air inlet; Air inlet adjustment front edge of board and housing are articulated and connected, and make the adjustable included angle joint between air inlet adjustment plate and the horizontal air intake direction and are fixed on the different angles position.
The said one-level plate that connects material is inserted on the housing through the slot that is positioned at the housing both sides, and said slot is provided with many groups from the bottom to top, and the one-level plate that connects material can be inserted on the different height position.
The said one-level plate front lower place that connects material also is provided with the secondary plate that connects material.
Advantage of the present invention is:
1, since the stone coal on the slope pipeline difficulty of climbing, the mediation airduct is housed on increase in pipeline can improves stone coal climbing capacity;
2, after the stone coal gets into the horizontal feed pipeline, deposit easily, the purging air port that horizontal pipe is installed can be opened the purging air port and dredged when the deposition accident, guaranteed the equipment reliable operation;
3, can guarantee the communicating pipe between stone coal bunker and the tap line to keep negative pressure state in the stone coal bunker, prevent that dust from leaking and contaminated environment;
4, the stone coal bunker is equipped with negative pressure relief valve, and system's negative pressure is excessive in the time of can preventing line clogging causes the accident;
5, between the blimp of volume blower fan outer setting, sound insulation and muffler can effectively reduce noise pollution;
6, stone coal and air get into mixing chamber respectively from two passages in the transport of special use, can prevent that the too fast whereabouts of stone coal from forming obstruction; Air is by air inlet adjustment plate separated into two parts; A part is passed through from housing inner chamber bottom; Be used to provide main transmitting power; A part connects material plate top through being used to promote the hybrid chamber that the stone coal gets into front end from one-level, can change the ratio of two parts wind through regulating air inlet adjustment plate aperture, changes system's conveying capacity thereby regulate the ratio of carrying air and stone coal;
7, special-purpose transport does not adopt any tumbler, and its operational reliability is high, and is not easy to wear.
Description of drawings
Fig. 1 is an overall structure sketch map of the present invention;
Fig. 2 is the plan structure sketch map of Fig. 1;
Fig. 3 is the structure for amplifying sketch map of stone coal bunker part;
Fig. 4 is the structural representation that purges the air port;
Fig. 5 is the structure for amplifying sketch map of pay-off.
The specific embodiment
Reference numeral comprises: stone coal bunker 01; Pay-off 02; Housing 021; Charging aperture 022; Air inlet 023; Discharging opening 024; The one-level plate 025 that connects material; Air inlet adjustment plate 026; Slot 027; The secondary plate 028 that connects material; Tap line 03; Main line pipeline 04; Stone coal bunker 05; Device for discharging 051; Negative pressure relief valve 052; Deduster 06; Volume blower fan 07; The air outlet 071 of volume blower fan; Loose airduct 08; Purge air port 09; Blimp 10; Between sound insulation 11; Air vent 111; Muffler 112; Rainhat 113; Communicating pipe 12.
Shown in Fig. 1～2, this system includes a plurality of stone coal bunkers 01 that are connected with coal pulverizer, and the stone coal bunker is connected with separately tap line 03 through pay-off 02, and the upper space of stone coal bunker 01 also passes through directly to be connected with tap line 03 one period communicating pipe 12.Each tap line feeds stone coal bunker 05 through main line pipeline 04, and stone coal bunker bottom is provided with device for discharging 051, and the air outlet on stone coal bunker top is connected with volume blower fan 07 through deduster 06, and the housing of stone coal bunker 05 is provided with negative pressure relief valve 052; Tap line 03 includes plurality of sections horizontal pipe and increase in pipeline with main line pipeline 04; Increase in pipeline is provided with the loose airduct 08 (referring to Fig. 3) that communicates with outside atmosphere, and horizontal pipe is provided with the purging air port 09 (referring to Fig. 4) that communicates with outside atmosphere.
Said volume blower fan 07 outside is covered with blimp 10, has between sound insulation 11 in the blimp outer setting, and in the air outlet 071 of volume blower fan was arranged between sound insulation, the top had air vent 111 between sound insulation; Vent is provided with muffler 112 and rainhat 113.
The running of said feed arrangement 02 is: the stone coal in the stone coal bunker 01 gets in the housing 021 from charging aperture 022; Dropping on one-level connects material on the plate 025; The one-level plate 025 that connects material is inserted on the slot 027 of housing both sides; The different arrays that are furnished with of slot basis and charging aperture distance, the one-level plate 025 that connects material changes stone coal circulation area through being inserted in different slot 027, thereby realization is to the charging of different-grain diameter stone coal; Air is got into by air inlet 023; By air inlet adjustment plate 026 separated into two parts, a part is used for strength and carries through arriving discharging opening from one-level plate 025 bottom that connects material, and a part is used to promote the stone coal and arrives discharging opening on one-level plate 025 top that connects material; Can change the ratio of two parts wind through the aperture of regulating air inlet adjustment plate 026; Thereby change system's conveying capacity; Thereby air inlet adjustment plate 026 aperture opened can be increased the bottom greatly and carry air quantity, reduce top and promote air quantity and reduce conveying capacity, can reduce the bottom and carries air quantity, increases top and promote air quantity and increase conveying capacity thereby air inlet adjustment plate adjustable plate 026 aperture turned down; Last stone coal is fallen secondary and is connected material and mixes from discharging opening 024 outflow with air-flow on the plate 028 from the one-level plate 025 that connects material.
Claims (7)
1. high-efficiency environment-friendly type negative-pressure pneumatic transmission system for pebble coal; Include a plurality of stone coal bunkers (01) that are connected with coal pulverizer; The stone coal bunker is connected with separately tap line (03) through pay-off (02); Each tap line feeds stone coal bunker (05) through main line pipeline (04), and stone coal bunker bottom is provided with device for discharging (051), and the air outlet on stone coal bunker top is connected with volume blower fan (07) through deduster (06); It is characterized in that: tap line (03) and main line pipeline (04) include plurality of sections horizontal pipe and increase in pipeline; Increase in pipeline is provided with the loose airduct (08) that communicates with outside atmosphere, and horizontal pipe is provided with the purging air port (09) that communicates with outside atmosphere; The upper space of said stone coal bunker (01) is through directly being connected with tap line (03) one period communicating pipe (12).
2. high-efficiency environment-friendly type negative-pressure pneumatic transmission system for pebble coal according to claim 1 is characterized in that: the housing of said stone coal bunker (05) is provided with negative pressure relief valve (052).
3. high-efficiency environment-friendly type negative-pressure pneumatic transmission system for pebble coal according to claim 1; It is characterized in that: said volume blower fan (07) outside is covered with blimp (10); In the blimp outer setting (11) between sound insulation are arranged; In the air outlet of volume blower fan (071) was arranged between sound insulation, the top had air vent (111) between sound insulation.
4. high-efficiency environment-friendly type negative-pressure pneumatic transmission system for pebble coal according to claim 3 is characterized in that: air vent (111) locates to be provided with muffler (112) and rainhat (113).
5. high-efficiency environment-friendly type negative-pressure pneumatic transmission system for pebble coal according to claim 1; It is characterized in that: said pay-off (02) includes a housing (021); The top of housing is provided with the charging aperture (022) that communicates with stone coal bunker (01); The housing rear end is provided with air inlet (023), and the housing front end is provided with the discharging opening (024) that is connected with tap line (03); Housing inner chamber below charging aperture middle part is provided with the one-level plate (025) that connects material; One-level connects material and is provided with an air inlet adjustment plate (026) between plate and the air inlet; Air inlet adjustment front edge of board and housing are articulated and connected, and make the adjustable included angle joint between air inlet adjustment plate and the horizontal air intake direction and are fixed on the different angles position.
6. high-efficiency environment-friendly type negative-pressure pneumatic transmission system for pebble coal according to claim 5; It is characterized in that: the said one-level plate (025) that connects material is inserted on the housing through the slot (027) that is positioned at the housing both sides; Said slot is provided with many groups from the bottom to top, and the one-level plate that connects material can be inserted on the different height position.
7. high-efficiency environment-friendly type negative-pressure pneumatic transmission system for pebble coal according to claim 5 is characterized in that: said one-level plate (025) front lower place that connects material also is provided with the secondary plate (028) that connects material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010117919 CN101804380B (en) | 2010-03-05 | 2010-03-05 | High-efficiency environment-friendly type negative-pressure pneumatic transmission system for pebble coal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010117919 CN101804380B (en) | 2010-03-05 | 2010-03-05 | High-efficiency environment-friendly type negative-pressure pneumatic transmission system for pebble coal |
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| Publication Number | Publication Date |
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| CN101804380A CN101804380A (en) | 2010-08-18 |
| CN101804380B true CN101804380B (en) | 2012-01-11 |
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| CN 201010117919 Expired - Fee Related CN101804380B (en) | 2010-03-05 | 2010-03-05 | High-efficiency environment-friendly type negative-pressure pneumatic transmission system for pebble coal |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102614971A (en) * | 2012-01-05 | 2012-08-01 | 安徽省荆涂电力工程有限公司 | Pebble coal feeder |
| CN103321675B (en) * | 2013-05-14 | 2015-06-10 | 中国矿业大学 | Pneumatic conveying and filling method and equipment for gangue in underground coal mine |
| CN103599858A (en) * | 2013-11-05 | 2014-02-26 | 西安西热锅炉环保工程有限公司 | Pebble coal sorting and recycling system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200974714Y (en) * | 2006-11-28 | 2007-11-14 | 邓孝成 | Stone coal pneumatic suction system |
| CN101318595A (en) * | 2007-08-14 | 2008-12-10 | 镇江华东电力设备制造厂 | Pebble coal vacuum clearing system |
| CN201313067Y (en) * | 2008-12-03 | 2009-09-23 | 江苏中能电力设备有限公司 | Negative pressure conveying system for pebble coal |
| CN201321286Y (en) * | 2008-12-22 | 2009-10-07 | 侯光明 | Stone coal pneumatic transmitting system |
| CN201362508Y (en) * | 2009-01-14 | 2009-12-16 | 西安信耐机电设备有限公司 | Stone coal subpressure pneumatic conveying system |
| CN201603602U (en) * | 2010-03-05 | 2010-10-13 | 江苏中能电力设备有限公司 | High-efficiency environment-friendly stone coal negative-pressure pneumatic conveying system |
-
2010
- 2010-03-05 CN CN 201010117919 patent/CN101804380B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200974714Y (en) * | 2006-11-28 | 2007-11-14 | 邓孝成 | Stone coal pneumatic suction system |
| CN101318595A (en) * | 2007-08-14 | 2008-12-10 | 镇江华东电力设备制造厂 | Pebble coal vacuum clearing system |
| CN201313067Y (en) * | 2008-12-03 | 2009-09-23 | 江苏中能电力设备有限公司 | Negative pressure conveying system for pebble coal |
| CN201321286Y (en) * | 2008-12-22 | 2009-10-07 | 侯光明 | Stone coal pneumatic transmitting system |
| CN201362508Y (en) * | 2009-01-14 | 2009-12-16 | 西安信耐机电设备有限公司 | Stone coal subpressure pneumatic conveying system |
| CN201603602U (en) * | 2010-03-05 | 2010-10-13 | 江苏中能电力设备有限公司 | High-efficiency environment-friendly stone coal negative-pressure pneumatic conveying system |
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