CN101804918B - Dual-channel adjustable pebble coal feeding device - Google Patents
Dual-channel adjustable pebble coal feeding device Download PDFInfo
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- CN101804918B CN101804918B CN2010101179237A CN201010117923A CN101804918B CN 101804918 B CN101804918 B CN 101804918B CN 2010101179237 A CN2010101179237 A CN 2010101179237A CN 201010117923 A CN201010117923 A CN 201010117923A CN 101804918 B CN101804918 B CN 101804918B
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Abstract
The invention relates to a material conveying part for a pebble coal pneumatic conveying system in a thermal power plant, in particular to a dual-channel adjustable pebble coal feeding device, which comprises a shell, wherein the top part of the shell is provided with a feeding port which is communicated with a pebble coal hopper, the rear end of the shell is provided with an air inlet, and the front end of the shell is provided with a discharging port which is communicated with a negative-pressure pipeline of a pneumatic conveying system; a primary receiving plate is arranged on the middle part of an inner cavity of the shell below the feeding port, an air inlet adjusting plate is arranged between the primary receiving plate and the air inlet, and the front end of the air inlet adjusting plate is hinged with the shell, so the angle between the air inlet adjusting plate and the horizontal air inlet direction is adjustable and is fixed at different angle positions. The dual-channel adjustable pebble coal feeding device has simple structure, rapid conveying speed, large adaptable pebble coal granularity range, adjustable conveying conditions and high running reliability.
Description
Technical field
The present invention relates to a kind of mass transport parts that are used for thermal power plant's stone coal gas power delivery system, specifically is a kind of dual-channel adjustable pebble coal feeding device.
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 operational process.The stone coal is mainly derived from big, the difficult spoil that grinds of density, iron pyrite etc. in the raw coal, and its stone coal discharge side from its underpart when coal mill moves is discharged.The stone coal needs discharging in time; If stone coal discharging is untimely, bulk deposition in coal mill 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 mill parts such as scaling loss air channel, scraper plate and stone coal bin cause the coal mill 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 quantity discharged 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, transport efficiency is high, labour health condition is good.The delivery duct 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, is mainly:
1, traffic capacity is not enough.The feed arrangement of air-transport system stone coal mainly adopts screw feeder, and the screw feeder delivery rate is very limited, under the big situation of stone coal amount, can't the stone coal in time be transported away;
2, can't carry big particle diameter material.The material that particle diameter is bigger in the stone coal is more, and screw feeder can't be carried for the big stone coal of particle diameter, has limited the field of application of air-transport system;
3, screw feeder is very easy to et out of order as tumbler when carrying the stone coal, and also easy abrasion often needs maintenance, and reliability is very poor.
Summary of the invention
Technical matters to be solved by this invention is, provide a kind of simple in structure, delivery speed fast, the stone coal particle size range that adapts to is big, transport condition scalable, dual-channel adjustable pebble coal feeding device that serviceability is high.
Dual-channel adjustable pebble coal feeding device of the present invention includes a housing; The top of housing is provided with the inlet point that communicates with the stone coal hopper; The housing rear end is provided with ventilation inlet, and the housing front end is provided with the discharging opening that communicates with the negative-pressure pipeline of air-transport system; Housing inner chamber below inlet point 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 ventilation 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 to make stone coal and air get into blending box respectively from two passages, stops up to prevent that the too fast whereabouts of stone coal from forming; One-level connects material plate through on the slot that is inserted into differing heights; Can change stone coal flow area; Thereby realize charging to different-grain diameter stone coal; Can adapt to big particle diameter stone coal and carry, the secondary separator of battery plates can make the stone coal that rate of onset is arranged and be in the air-flow velocity highest zone, helps the stone coal and carries.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 traffic capacity thereby regulate the ratio of carrying air and stone coal.This device does not adopt any tumbler, and serviceability is high, and is not easy to wear.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The specific embodiment
Reference numeral comprises: housing 1, stone coal hopper 2, inlet point 3, ventilation inlet 4, discharging opening 5, one-level connect material plate 6, secondary connect material plate 7, slot 8, air inlet adjustment plate 9.
As shown in the figure, the operational process of feed arrangement of the present invention is: the stone coals in the stone coal hopper 2 get in the housings 1 from inlet point 3, drop on one-level and connect material on the plate 6; The one-level plate 6 that connects material is inserted on the slot 8 of housing both sides; The different arrays that are furnished with of slot basis and inlet point distance, the one-level plate 6 that connects material changes stone coal flow area through being inserted in different slot 8, thereby realization is to the charging of different-grain diameter stone coal; Air is got into by ventilation inlet 4; By air inlet adjustment plate 9 separated into two parts, a part is used for strength and carries through arriving discharging opening from one-level plate 6 bottoms that connect material, and a part is used to promote the stone coal and arrives discharging opening on one-level plate 6 tops that connect material; Can change the ratio of two parts wind through the aperture of regulating air inlet adjustment plate 9; Thereby change system's traffic capacity; Thereby air inlet adjustment plate 9 apertures are opened can be increased the bottom greatly and carry air quantity, reduce top and promote air quantity and reduce operational throughput, can reduce the bottom and carries air quantity, increases top and promote air quantity and increase operational throughput thereby air inlet adjustment plate regulating plate 9 apertures are turned down; Last stone coal is fallen secondary and is connected material and mixes from discharging opening 5 outflows with air-flow on the plate 7 from the one-level plate 6 that connects material.
Claims (3)
1. a dual-channel adjustable pebble coal feeding device includes a housing (1), and the top of housing is provided with the inlet point (3) that communicates with the stone coal hopper, and it is characterized in that: the housing rear end is provided with ventilation inlet (4), and the housing front end is provided with discharging opening (5); Housing inner chamber below inlet point middle part is provided with the one-level plate (6) that connects material; One-level connects material and is provided with an air inlet adjustment plate (9) between plate and the ventilation 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.
2. dual-channel adjustable pebble coal feeding device according to claim 1; It is characterized in that: the said one-level plate (6) that connects material is inserted on the housing through the slot (8) that is positioned at the housing both sides; Said slot (8) 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.
3. dual-channel adjustable pebble coal feeding device according to claim 1 and 2 is characterized in that: said one-level plate (6) front lower place that connects material also is provided with the secondary plate (7) that connects material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101179237A CN101804918B (en) | 2010-03-05 | 2010-03-05 | Dual-channel adjustable pebble coal feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101179237A CN101804918B (en) | 2010-03-05 | 2010-03-05 | Dual-channel adjustable pebble coal feeding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101804918A CN101804918A (en) | 2010-08-18 |
| CN101804918B true CN101804918B (en) | 2012-07-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101179237A Expired - Fee Related CN101804918B (en) | 2010-03-05 | 2010-03-05 | Dual-channel adjustable pebble coal feeding device |
Country Status (1)
| Country | Link |
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| CN (1) | CN101804918B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105173737A (en) * | 2015-08-13 | 2015-12-23 | 郑州三迪建筑科技有限公司 | Powder and granular material positive-pressure conveying pump |
| CN112758639B (en) * | 2020-12-22 | 2022-11-01 | 中国矿业大学(北京) | Method for reducing initial pressure at bottom of large-scale storage bin |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3807807A (en) * | 1971-05-10 | 1974-04-30 | Eastern Cyclone Ind Inc | Feeding device for bulk material to a pneumatic conveying system |
| CN2706446Y (en) * | 2004-05-27 | 2005-06-29 | 李蔓球 | Air powder mixer |
| 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 |
| CN201320501Y (en) * | 2008-10-22 | 2009-10-07 | 毛恒松 | Pebble coal air-drive cleaning apparatus |
| CN201619881U (en) * | 2010-03-05 | 2010-11-03 | 江苏中能电力设备有限公司 | Two-channel adjustable pebble coal feeding device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8914573D0 (en) * | 1989-06-24 | 1989-08-16 | M & Y Air Systems Ltd | Material discharge unit |
-
2010
- 2010-03-05 CN CN2010101179237A patent/CN101804918B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3807807A (en) * | 1971-05-10 | 1974-04-30 | Eastern Cyclone Ind Inc | Feeding device for bulk material to a pneumatic conveying system |
| CN2706446Y (en) * | 2004-05-27 | 2005-06-29 | 李蔓球 | Air powder mixer |
| CN201320501Y (en) * | 2008-10-22 | 2009-10-07 | 毛恒松 | Pebble coal air-drive cleaning apparatus |
| 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 |
| CN201619881U (en) * | 2010-03-05 | 2010-11-03 | 江苏中能电力设备有限公司 | Two-channel adjustable pebble coal feeding device |
Non-Patent Citations (1)
| Title |
|---|
| 张森.浅谈火力发电厂石子煤收集系统.《制冷空调与电力机械》.2008,第29卷(第122期),第88页-第91页. * |
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| CN101804918A (en) | 2010-08-18 |
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Granted publication date: 20120704 Termination date: 20160305 |