CN102700866B - Anti-clogging method for powder conveying equipment - Google Patents
Anti-clogging method for powder conveying equipment Download PDFInfo
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- CN102700866B CN102700866B CN201210205168.7A CN201210205168A CN102700866B CN 102700866 B CN102700866 B CN 102700866B CN 201210205168 A CN201210205168 A CN 201210205168A CN 102700866 B CN102700866 B CN 102700866B
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- 239000000843 powder Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000005507 spraying Methods 0.000 claims abstract description 46
- 238000005259 measurement Methods 0.000 claims abstract description 9
- 239000003245 coal Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 239000000428 dust Substances 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 description 33
- 230000000052 comparative effect Effects 0.000 description 9
- 239000007921 spray Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 230000008570 general process Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The invention provides an anti-clogging method for powder conveying equipment. The equipment comprise at least one tapered hopper; the tapered hopper comprises a loading section at the upper part and a blanking section at the lower part; spraying equipment and a blade are arranged at the blanking section; the spraying equipment is arranged below the blade; the nozzle of the spraying equipment is used for spraying gas to the inner wall of the blanking section; the blade is connected with a rotating shaft and rotates under the action of the rotating shaft; and flow rate measurement equipment is arranged at the outlet section of the blanking section. When the measuring result of the flow rate measurement equipment shows that flow rate is lowered to a certain value, an anti-clogging measure is taken. The anti-clogging measure is only starting the spraying equipment, only starting the blade, or starting the spraying equipment and the blade at the same time, wherein when the blade is started, whether the nozzle of the blade is started or not is insignificant.
Description
Technical field
The invention belongs to powder transportation art, be specifically related to a kind of anti-blocking method with the powder load transfer device of choke preventing function, particularly a kind of anti-blocking method when carrying along gravitational field with the powder load transfer device of choke preventing function.
Background technology
At present, in chemical industry, field of boilers, powder conveying is very general process, and wherein the vertical transport of powder is modal process.In general, along the powder of gravitational field, carry in order to save energy, be all rely on gravity carry out powder freely decline carry.Powder load transfer device along gravitational field comprises at least one broach hopper, and this broach hopper comprises top material loading section and bottom blanking section.Although the outlet size of blanking section, much larger than the particle diameter of powder, still likely forms and builds bridge when the whole discharge downwards of powder material.This obstruction can cause the fault of load transfer device, and then has influence on the fault of whole system.The major cause resulting in blockage is such as having friction force between powder and equipment inner wall, has friction force etc. between powder.In order to prevent latch up phenomenon, corresponding anti-block apparatus must be set in load transfer device.
For many years, in order to solve blockage problem, developed vibration or beaten the methods such as inwall, rotation scraping inwall, gas injection inwall.200810140442.0 proposed the equipment of rotary conic hopper stationary blade, 201020262144.1 proposed the fixedly equipment of broach hopper of rotating blade, although these two kinds of equipment can reach the effect that prevents obstruction, but it is all higher that it prevents stopping up the energy consumption needing, still need a kind of powder load transfer device and anti-blocking method thereof that prevents efficiently obstruction.
Summary of the invention
Blockage problem while carrying in order to solve powder material, the design people provides a kind of powder load transfer device and method with choke preventing function.
Powder load transfer device anti-blocking method proposed by the invention, it comprises at least one broach hopper described equipment, this broach hopper comprises top material loading section and bottom blanking section, in bottom, blanking section has spraying equipment and blade, wherein spraying equipment is below blade, and the nozzle of spraying equipment is subordinate's section of expecting inwall jet gas down, and blade is connected with S. A., by S. A., rotate, at the outlet section of bottom blanking section, there is flow measurement;
The flow measuring when flow measurement drops to when a certain amount of, starts anti-blocking equipment, can only start spraying equipment, only start blade, also can start spraying equipment and blade simultaneously; When starting blade, the nozzle that can start blade also can not start the nozzle of blade.
Wherein, spraying equipment is connected with S. A., and S. A. is hollow, for spraying equipment provides jet gas.
Wherein, the nozzle of the spraying equipment jet gas that makes progress, nozzle and horizontal sextant angle 15-50 °, preferably 35 °.
Wherein, blade has the nozzle of subordinate's section of expecting inwall jet gas down.
Wherein, the nozzle Jet with downward flow direction gas on blade, nozzle and horizontal sextant angle 15-95 °, preferred 45-90 °, preferably 75 °.
Wherein, blade plan form can be in the shape of a spiral, straight tabular or swash plate shape.
The condition of startup is set according to the character of powder material, in general when flow drops to the 80%-40% of normal discharge, starts anti-blocking equipment, reduction energy consumption that can maximal efficiency.For power plant boiler fine coal, carry, in general when flow drop to normal discharge 70% time startup; And for the fly ash carry of flying dust treating system, in general when flow drop to normal discharge 50% time start.
This equipment is by two kinds of anti-block apparatus of nozzle and blade are set simultaneously, according to actual conditions select to start the two one of or start simultaneously, improved anti-blocking efficiency, reduced energy consumption.By discharge measurement, judge stopping state, select start anti-block apparatus suitable opportunity, improved anti-blocking efficiency, reduced energy consumption.The spray angle of adjusting spraying equipment nozzle, has improved anti-blocking efficiency, has reduced energy consumption.Nozzle is set on blade, in rotation, sprays, improved anti-blocking efficiency, reduced energy consumption.The spray angle of adjusting blade top nozzle, has improved anti-blocking efficiency, has reduced energy consumption.
Accompanying drawing explanation
Fig. 1 represents the structural representation of this equipment.
The specific embodiment
This equipment is referring to Fig. 1.Its structure comprises: at least one broach hopper, this broach hopper comprises top material loading section 1 and bottom blanking section 2, in bottom blanking section 2, there is spraying equipment 5 and blade 4, wherein spraying equipment 5 is below blade 4, the nozzle of spraying equipment 5 is subordinate's section of expecting inwall jet gas down, blade 4 is connected with S. A. 3, by S. A., rotates.Spraying equipment 5 is connected with S. A. 3, and S. A. 3 is hollow, for spraying equipment provides jet gas.The nozzle of the spraying equipment jet gas that makes progress.Blade has the nozzle of subordinate's section of expecting inwall jet gas down.Nozzle Jet with downward flow direction gas on blade.Outlet section in bottom blanking section has flow measurement 6, and blade plan form is swash plate shape.
When conveying powder material, flow measurement 6 measuring flows change, and when flow drops to when a certain amount of, start anti-block apparatus, can only start spraying equipment 5, only start blade 4, also can start spraying equipment 5 and blade 4 simultaneously; When starting blade 4, the nozzle that can start blade 4 also can not start the nozzle of blade 4, thereby prevents that efficiently powder material from stopping up.
Comparative example 1:
Structure and this equipment are similar, just there is no spraying equipment 5, take fine coal as example, when flow drop to normal discharge 70% time start blade (not starting the nozzle of blade), measuring flow returns to 95% energy consumption of normal discharge.
Comparative example 2:
Structure is identical with comparative example 1, take fine coal as example, when flow drop to normal discharge 70% time start blade and (start the nozzle of blade, the nozzle Jet with downward flow direction gas on blade simultaneously, 75 ° of nozzle and horizontal sextant angles), measuring flow returns to 95% energy consumption of normal discharge.
Comparative example 3:
Structure and this equipment are similar, just there is no blade 4, the nozzle of the spraying equipment jet gas that makes progress, 35 ° of nozzle and horizontal sextant angles, take fine coal as example, when flow drop to normal discharge 70% time start spraying equipment 5, measuring flow returns to 95% energy consumption of normal discharge.
Embodiment 1:
Take fine coal as example, when flow drop to normal discharge 70% time start spraying equipment 5 and blade 4 (not starting the nozzle of blade), the nozzle of the spraying equipment jet gas that makes progress, 35 ° of nozzle and horizontal sextant angles, measuring flow returns to 95% energy consumption of normal discharge.
Embodiment 2:
Take fine coal as example, when flow drop to normal discharge 70% time start spraying equipment 5 and blade 4 (starts the nozzle of blade simultaneously, nozzle Jet with downward flow direction gas on blade, 75 ° of nozzle and horizontal sextant angles), the nozzle of the spraying equipment jet gas that makes progress, 35 ° of nozzle and horizontal sextant angles, measuring flow returns to 95% energy consumption of normal discharge.
The energy consumption of comparative example 1 of take is 1, calculates the energy consumption of other comparative example and embodiment, in Table 1.
| Comparative example 1 | Comparative example 2 | Comparative example 3 | Embodiment 1 | Embodiment 2 | |
| Energy consumption | 100％ | 95％ | 120％ | 85％ | 80％ |
As can be seen from the table, there is blade and spraying equipment simultaneously can reduce anti-blocking energy consumption.
Embodiment 3:
Take fine coal as example, when flow drop to normal discharge 70% time start spraying equipment 5 and blade 4 (not starting the nozzle of blade), the nozzle of the spraying equipment jet gas that makes progress, 15,25,35,45,55 ° of nozzle and horizontal sextant angles.Measuring flow returns to 95% energy consumption of normal discharge.The energy consumption of 15 ° of angles of take is 1, calculates the energy consumption of other angle, in Table 2.
| 15° | 25° | 35° | 45° | 55° | |
| Energy consumption | 100％ | 95％ | 80％ | 90％ | 105％ |
As can be seen from the table, 35 ° have lowest energy consumption.
Embodiment 4:
Take fine coal as example, when flow drop to normal discharge 70% time start spraying equipment 5 and blade 4 (simultaneously starting the nozzle of blade), the nozzle of the spraying equipment jet gas that makes progress, 35 ° of nozzle and horizontal sextant angles, wherein, nozzle Jet with downward flow direction gas on blade, 15,35,55,75,95 ° of nozzle and horizontal sextant angles.Measuring flow returns to 95% energy consumption of normal discharge.The energy consumption of 15 ° of angles of take is 1, calculates the energy consumption of other angle, in Table 3.
| 15° | 35° | 55° | 75° | 95° | |
| Energy consumption | 100％ | 95％ | 80％ | 75％ | 100％ |
As can be seen from the table, 75 ° have lowest energy consumption.
Embodiment 5:
Take fine coal as example, when flow drop to normal discharge 40%, 50%, 60%, 70%, 80% time start spraying equipment 5 and blade 4 (simultaneously starting the nozzle of blade), the nozzle of the spraying equipment jet gas that makes progress, 35 ° of nozzle and horizontal sextant angles, wherein, nozzle Jet with downward flow direction gas on blade, 75 ° of nozzle and horizontal sextant angles, flow return to normal discharge 95% time close spraying equipment 5 and blade 4 (simultaneously closing the nozzle of blade), calculate the energy consumption of carrying the anti-blocking equipment of 10kg material.40% the energy consumption of take is 1, calculates other energy consumption, in Table 4.
| 40％ | 50％ | 60％ | 70％ | 80％ | |
| Energy consumption | 100％ | 100％ | 95％ | 90％ | 100％ |
As can be seen from the table, start and there is lowest energy consumption 70% time.
Embodiment 6:
Similar to Example 5, just change fine coal into flying dust, the results are shown in Table 5.
| 40％ | 50％ | 60％ | 70％ | 80％ | |
| Energy consumption | 100％ | 90％ | 95％ | 100％ | 100％ |
As can be seen from the table, start and there is lowest energy consumption 50% time.
Claims (11)
1. a powder load transfer device anti-blocking method, described equipment comprises at least one broach hopper, this broach hopper comprises top material loading section and bottom blanking section, in bottom, blanking section has spraying equipment and blade, wherein spraying equipment is below blade, and the nozzle of spraying equipment is subordinate's section of expecting inwall jet gas down, and blade is connected with S. A., by S. A., rotate, at the outlet section of bottom blanking section, there is flow measurement;
The flow measuring when flow measurement drops to when a certain amount of, starts clogging-preventing measures, comprising:
Only start spraying equipment, only start blade, or start spraying equipment and blade simultaneously;
When starting blade, start the nozzle of blade or do not start the nozzle of blade.
2. the method for claim 1, the nozzle of the spraying equipment jet gas that makes progress wherein, nozzle and horizontal sextant angle 15-50 °.
3. method as claimed in claim 2, nozzle and horizontal sextant angle are 35 °.
4. the method as described in claim 1-3 any one, wherein spraying equipment is connected with S. A., and S. A. is hollow, for spraying equipment provides jet gas.
5. the method as described in claim 1-3 any one, its Leaf has the nozzle of subordinate's section of expecting inwall jet gas down.
6. method as claimed in claim 5, the nozzle Jet with downward flow direction gas on its Leaf, nozzle and horizontal sextant angle 15-95 °.
7. method as claimed in claim 6, nozzle and horizontal sextant angle 45-90 °.
8. method as claimed in claim 7, nozzle and horizontal sextant angle are 75 °.
9. the method as described in claim 1-3 any one, wherein blade plan form in the shape of a spiral, straight tabular or swash plate shape.
10. the method as described in claim 1-3 any one, it is the 80%-40% that drops to normal discharge that described flow drops to a certain amount of.
11. methods as claimed in claim 10, when for delivery of fine coal, flow drops to 70% of normal discharge; When for delivery of flying dust, flow drops to 50% of normal discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210205168.7A CN102700866B (en) | 2012-06-19 | 2012-06-19 | Anti-clogging method for powder conveying equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210205168.7A CN102700866B (en) | 2012-06-19 | 2012-06-19 | Anti-clogging method for powder conveying equipment |
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| Publication Number | Publication Date |
|---|---|
| CN102700866A CN102700866A (en) | 2012-10-03 |
| CN102700866B true CN102700866B (en) | 2014-05-07 |
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| CN201210205168.7A Expired - Fee Related CN102700866B (en) | 2012-06-19 | 2012-06-19 | Anti-clogging method for powder conveying equipment |
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| CN112655577B (en) * | 2020-12-28 | 2024-08-09 | 深圳市润农科技有限公司 | Novel arch breaking bin and intelligent feeding system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201604934U (en) * | 2009-10-19 | 2010-10-13 | 株洲千金药业股份有限公司 | Transferring storage and quantitative conveying unit for herb, root materials |
| CN201670484U (en) * | 2010-05-12 | 2010-12-15 | 武汉海德新能源投资有限公司 | Biomass powder feeder |
| CN201999524U (en) * | 2010-11-23 | 2011-10-05 | 克莱德物料输送技术（北京）有限公司 | Vertical type rotary feeder and pneumatic blowing device |
| CN202138746U (en) * | 2011-03-09 | 2012-02-08 | 万平 | Spiral-thrust rotary blocking-cleaning bunker |
| CN202170109U (en) * | 2011-07-12 | 2012-03-21 | 武汉工程大学 | Pneumatic reaction agitation type coal bucket block-clearing device |
| CN102390729B (en) * | 2011-07-26 | 2013-04-03 | 徐州衡器厂有限公司 | Weightlessness feeding system |
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Owner name: SHANDONG PINGYUAN CHOOSUN ENERGY SAVING EQUIPMENT Free format text: FORMER OWNER: CHENG XIAOTANG Effective date: 20140729 |
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Free format text: CORRECT: ADDRESS; FROM: 100049 HAIDIAN, BEIJING TO: 253100 DEZHOU, SHANDONG PROVINCE |
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Effective date of registration: 20140729 Address after: 253100 Eastern District of Plain Economic Development Zone, Shandong Patentee after: Shandong plain energy saving equipment Co., Ltd. Address before: 100049 Beijing Fuxing Road, No. 36, building No. 1, building No. 1104, No. Patentee before: Cheng Xiaotang |
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| 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: 20140507 Termination date: 20160619 |