CN102976102B - A kind of pebble coal feeding device with separation function - Google Patents
A kind of pebble coal feeding device with separation function Download PDFInfo
- Publication number
- CN102976102B CN102976102B CN201210359109.5A CN201210359109A CN102976102B CN 102976102 B CN102976102 B CN 102976102B CN 201210359109 A CN201210359109 A CN 201210359109A CN 102976102 B CN102976102 B CN 102976102B
- Authority
- CN
- China
- Prior art keywords
- separation chamber
- air
- pipe
- pebble coal
- coal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention discloses a kind of pebble coal feeding device with separation function, relate to for the mass transport parts in thermal power plant's stone coal pneumatic transmitting system.The present invention includes segregation section pipeline, above segregation section pipeline, the material collecting device be connected with screw feeder and feed pipe are set, segregation section front portion is provided with one section of bend loss be made up of flexible pipe, shrink blast pipe to be connected with bend pipe, the air intake direction of blast pipe is regulated by the camber changing bend pipe, the pebble coal particle size range needing to be separated is changed by regulating air intake direction, separation chamber is provided with below segregation section pipeline, rear portion, separation chamber is provided with the discharging opening communicated with the negative-pressure pipeline of air-transport system, at discharging opening right-hand member, flange is installed, directly can be connected with air-transport system.Structure of the present invention is simple, and separating effect is obvious, effectively can improve the reliability of stone coal pneumatic transmitting system long-time running.
Description
Technical field
The present invention relates to a kind of for the mass transport parts in thermal power plant's stone coal pneumatic transmitting system, specifically one possesses separation Large stone pebble coal feeding device.
Background technology
In the widely used coal mill operational process of thermal power plant, can produce a large amount of pebble coals, its main component is the spoil of comparatively large, the difficult mill of raw coal Midst density, iron pyrite etc., it when coal mill runs from it bottom discharge side discharge.Discharge a large amount of pebble coals need to be transported away in time, otherwise can in coal mill bulk deposition, the pebble coal of accumulation also can block air channel, cause coal mill fault transport stop.
Common stone coal discharge has the modes such as manual emission, hydraulic discharge, mechanical transportation.At present, thermal power plant's coal consumption is very large, and raw coal ature of coal is generally deteriorated, and the foreign material such as the stone in raw coal, ore increase than before, the stone coal discharge amount thereupon brought also increases greatly, and conventional stone coal discharge mode has been difficult to solve the problem that current pebble coal increases greatly.
In recent years, more domestic power plant have employed air-transport system to process the emission problem of pebble coal.Air-transport system is that one utilizes air-flow as carrier; in the mass transport mode of certain speed transferring bulk cargo, relative to other mass transport mode, it is high that Geldart-D particle has transport efficiency; equipment structure is safeguarded simple, is conducive to realizing the advantage such as Automatic Conveying and environmental protection.
Still there are some problems in the air-transport system of the pebble coal of current real-world operation; wherein; what have a strong impact on production process is the pipe choking problem of air-transport system; mainly owing to there is the larger particle of part particle diameter (pebble coal of mainly >=50mm) in pebble coal in it; these particles in the duct kinematic velocity are lower; and easy blocking pipe; small particle diameter pebble coal after blocking in pipeline can at block part bulk deposition; this brings very large difficulty to the dredging of pipeline; cause the easy et out of order of air-transport system, often need maintenance down.
Summary of the invention
The object of the invention is the line clogging problem in order to improve in stone coal pneumatic transmitting system, propose a kind of air intake direction special and separation chamber is installed to realize the pneumatic transmission feeding device of Large stone pebble coal pre-separation.Inevitably produce a large amount of pebble coal through coal mill, be separated before these bulky grain pebble coals enter main line, thus improve the reliability of air-transport system.
The pebble coal feeding device of band separation function of the present invention comprises material collecting device, feed pipe, contraction blast pipe, flexible pipe, separation chamber, separate lines, conveying pipeline, flange, described contraction blast pipe is connected with the front end of separate lines by flexible pipe, by the approach axis regulating the camber of flexible pipe to change air-flow, air-flow enters segregation section obliquely; Segregation section arranged beneath has separation chamber; Material collecting device is connected to the top of separate lines front end by feed pipe.The rear end of conveying pipeline is furnished with flange, and flange is directly connected with air-transport system.Separate lines diameter is D, and the diameter of feed pipe is also D, and the diameter of separation chamber's inlet point is also D, and the relative position of the inlet point of separate lines and the inlet point of feed pipe is 0.25D.
Above segregation section pipeline, the material collecting device be connected with screw feeder and feed pipe are set, segregation section front portion is provided with one section of bend loss be made up of flexible pipe, shrink blast pipe to be connected with bend pipe, the air intake direction of blast pipe is regulated by the camber changing bend pipe, the pebble coal particle size range needing to be separated is changed by regulating air intake direction, separation chamber is provided with below segregation section pipeline, first stripper and the second stripper are set in separation chamber, first stripper is located at the middle part of separation chamber, second stripper is located at the bottom of separation chamber, separation chamber divides in order to upper and lower two parts by the first stripper, when the pebble coal of separation chamber's upper part is stacked into a certain degree, first stripper is opened, particles fall is to bottom, separation chamber, after first time discharging completes, namely stripper closes, and then open the second stripper outwardly discharging of bottom, separation chamber, i.e. second time discharging, the object arranging twice discharging impacts in order to avoid external world during direct discharging pours in air-flow system stability, rear portion, separation chamber is provided with the conveying pipeline communicated with the negative-pressure pipeline of air-transport system, at conveying pipeline right-hand member, flange is installed, directly can be connected with air-transport system, the convenient air-transport system bad to existing operation undergoes technological transformation, time and cost are saved.
In the present invention, whole system is negative pressure, and air-flow enters segregation section obliquely, and air-flow can be analyzed to vertical direction F to the effect being fallen particle by feed pipe
vwith horizontal direction F
htwo component, simultaneously pebble coal itself is subject to gravity G and resistance F
reffect.Work as F
vbe greater than the gravity G of pebble coal particle, pebble coal particle, by after the level throw motion that does under airflow function upwards, enters main line.Work as F
vbe less than the gravity G of pebble coal particle, pebble coal particle does downward level throw motion by under airflow function.The pebble coal that particle diameter is larger will do rear one motion, and the pebble coal particle that part is large will enter separation chamber, and residue pebble coal will enter main line, be transported to appointed place, so just achieve the separation of different-grain diameter pebble coal particle.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the path of motion schematic diagram of different-grain diameter pebble coal particle in the present invention.
In figure: material collecting device 1, feed pipe 2, contraction blast pipe 3, flexible pipe 4, separation chamber 5, first stripper 6, second stripper 7, separate lines 8, conveying pipeline 9, flange 10.
Detailed description of the invention
Flange 10 can directly be connected with air-transport system, transformation existing system.Coal mill produces pebble coal particle and is transported to material collecting device 1 through screw feeder, separate lines 8 is entered through feed pipe 2, whole pipeline is in negative pressure, the air-flow entered obliquely from blast pipe 3 by carry the less pebble coal particle of particle diameter by segregation section 8 laggard enter main line, and large-size particles, the pebble coal of mainly>=50mm, because self gravitation G is greater than the component F of the vertical direction that air-flow provides
vfall into separation chamber, so just achieve easily stifled bulky grain pre-separation process.
Fig. 2 is the path of motion schematic diagram of the pebble coal particle of different-grain diameter, show in figure, the particle of different-grain diameter will have three kinds of multi-form path of motions after entering separate lines, track one is that the pebble coal that particle diameter is less produces, the level throw motion that these pebble coals will do upwards under airflow function, such particle can not enter into separation chamber; Track two is that the pebble coal of medium grain size produces, the air-flow that pebble coal is subject to F vertically upward
vbe less than the gravity G of pebble coal, its horizontal displacement distance along separator tube is comparatively far away, has crossed separation chamber, therefore also can not enter separation chamber; Track three is that the pebble coal of Large stone produces, the air-flow that pebble coal is subject to F vertically upward
vbe less than the gravity G of pebble coal, its horizontal displacement distance along separator tube is comparatively near, does not have the diameter that can exceed separation chamber, will fall into separation chamber.
Stripper 6 and 7 is installed in separation chamber, by 5 points, separation chamber in order to upper and lower two parts, when the pebble coal on top, separation chamber 5 stockpiles certain altitude, opened by stripper 6, pebble coal drops to bottom, separation chamber, i.e. first time discharging, after completing, stripper closes immediately, and then opens the stripper 7 outwardly discharging of bottom, separation chamber, i.e. second time discharging, the air-flow that such operation pours in when avoiding a discharging bottom separation chamber, on the impact of system stability, completes discharging simultaneously.
Claims (1)
1. the pebble coal feeding device with separation function, it is characterized in that, comprise material collecting device (1), feed pipe (2), shrink blast pipe (3), flexible pipe (4), separation chamber (5), separate lines (8) and conveying pipeline (9), described contraction blast pipe (3) is connected by the front end of flexible pipe (4) with separate lines (8), by the approach axis regulating the camber of flexible pipe (4) to change air-flow, air-flow enters separate lines (8) obliquely; Separate lines (8) arranged beneath has separation chamber (5); Material collecting device (1) is connected to the top of separate lines (8) front end by feed pipe (2); Rear portion, separation chamber is provided with the conveying pipeline (9) communicated with the negative-pressure pipeline of air-transport system; Separate lines (8) diameter is D, and the diameter of feed pipe (2) is also D, and the diameter of separation chamber (5) inlet point is also D, and the relative position of the inlet point of separate lines (8) and the inlet point of feed pipe (2) is 0.25D; Be furnished with the first stripper (6) and the second stripper (7) in separation chamber (5), the first stripper (6) is located at the middle part of separation chamber (5), and the second stripper (7) is located at the bottom of separation chamber (5); The rear end of described conveying pipeline (9) is furnished with flange (10), and flange (10) is directly connected with air-transport system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210359109.5A CN102976102B (en) | 2012-09-25 | 2012-09-25 | A kind of pebble coal feeding device with separation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210359109.5A CN102976102B (en) | 2012-09-25 | 2012-09-25 | A kind of pebble coal feeding device with separation function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102976102A CN102976102A (en) | 2013-03-20 |
| CN102976102B true CN102976102B (en) | 2016-04-06 |
Family
ID=47850533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210359109.5A Expired - Fee Related CN102976102B (en) | 2012-09-25 | 2012-09-25 | A kind of pebble coal feeding device with separation function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102976102B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4950388A (en) * | 1986-08-01 | 1990-08-21 | Robert G. Stafford | Separation of mixtures in a wind tunnel |
| CN2174269Y (en) * | 1993-11-20 | 1994-08-17 | 新疆生产建设兵团农业建设第一师一团 | Specific gravity separator |
| CN2312075Y (en) * | 1996-12-31 | 1999-03-31 | 王凤志 | Machine for separation of plumule of corn |
| CN201147754Y (en) * | 2007-11-06 | 2008-11-12 | 金川集团有限公司 | Material pneumatic grading plant |
| CN202343454U (en) * | 2011-09-21 | 2012-07-25 | 卓卫民 | Power selecting and collecting device |
| CN202784855U (en) * | 2012-09-25 | 2013-03-13 | 江苏大学 | Pebble coal feeding device having separation function |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4550486B2 (en) * | 2004-05-13 | 2010-09-22 | バブコック日立株式会社 | Classifier, vertical pulverizer including the same, and coal fired boiler apparatus including the vertical pulverizer |
-
2012
- 2012-09-25 CN CN201210359109.5A patent/CN102976102B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4950388A (en) * | 1986-08-01 | 1990-08-21 | Robert G. Stafford | Separation of mixtures in a wind tunnel |
| CN2174269Y (en) * | 1993-11-20 | 1994-08-17 | 新疆生产建设兵团农业建设第一师一团 | Specific gravity separator |
| CN2312075Y (en) * | 1996-12-31 | 1999-03-31 | 王凤志 | Machine for separation of plumule of corn |
| CN201147754Y (en) * | 2007-11-06 | 2008-11-12 | 金川集团有限公司 | Material pneumatic grading plant |
| CN202343454U (en) * | 2011-09-21 | 2012-07-25 | 卓卫民 | Power selecting and collecting device |
| CN202784855U (en) * | 2012-09-25 | 2013-03-13 | 江苏大学 | Pebble coal feeding device having separation function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102976102A (en) | 2013-03-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207792175U (en) | A kind of unpowered dust removal device | |
| CN202784855U (en) | Pebble coal feeding device having separation function | |
| CN201652397U (en) | Dust-collecting coal conveying corridor system | |
| CN203246843U (en) | Bulk material conveying system | |
| CN201619881U (en) | Two-channel adjustable pebble coal feeding device | |
| CN204369037U (en) | Large drop Belt Conveying material buffer device | |
| CN102976102B (en) | A kind of pebble coal feeding device with separation function | |
| CN102923485A (en) | Efficient positive-pressure pneumatic conveying system of pebble coal | |
| CN203064809U (en) | Novel pebble coal feeding device with separating function | |
| CN201276349Y (en) | Dust collecting double sealed guide chute | |
| CN103029989B (en) | Novel pebble coal feeding device with separation function | |
| CN202935946U (en) | Efficient positive-pressure pneumatic conveying system of pebble coal | |
| CN204355805U (en) | A kind of environment friendly dedusting hopper | |
| CN203319112U (en) | Chute abrasion-prevention equipment in material conveying | |
| CN203064735U (en) | Dust settling box of coal handling system | |
| CN102728590B (en) | Discharging servo dust catcher for gantry crane grab bucket and moveable funnel in stockyard | |
| CN101804918B (en) | Dual-channel adjustable pebble coal feeding device | |
| CN101804380B (en) | High-efficiency environment-friendly type negative-pressure pneumatic transmission system for pebble coal | |
| CN101016120A (en) | Method of transporting tobacco materials by flexible wind power | |
| CN103072800A (en) | On-line dust collection and extraction device and accessory block powder on-line separating system applying same | |
| CN202935943U (en) | Dual adjustable pebble coal positive pressure force feeding device | |
| CN204607049U (en) | A kind of pressure sending type powder conveying apparatus | |
| CN204453813U (en) | A kind of powder conveying apparatus | |
| CN201619819U (en) | Self-adapting stone coal feed apparatus | |
| CN208761681U (en) | A kind of environment-friendly dustless miberal powder spike selection by winnowing conveying device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160406 Termination date: 20170925 |