CN102874608B - Rotary-cut type integrated central feeding machine - Google Patents
Rotary-cut type integrated central feeding machine Download PDFInfo
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- CN102874608B CN102874608B CN201210439058.7A CN201210439058A CN102874608B CN 102874608 B CN102874608 B CN 102874608B CN 201210439058 A CN201210439058 A CN 201210439058A CN 102874608 B CN102874608 B CN 102874608B
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Abstract
The invention discloses a rotary-cut type integrated central feeding machine, and solves the problem of poor dredging effect in the prior art. The rotary-cut type integrated central feeding machine comprises an improved raw coal bin, a scraping device, a material pushing device, a hyperbolical or dried shrimp-shaped central feed hopper, an insert plate door, an intelligent electric cabinet and the like, wherein the hyperbolical or dried shrimp-shaped central feed hopper is connected with the feed opening of the raw coal bin; and the scraping device, the material pushing device and the insert plate door are controlled by the intelligent electric cabinet. The central feeding machine is designed reasonably, simple in structure, and convenient to mount, occupies no effective space of the improved raw coal bin, can be controlled intelligently, is high in practicability, mainly used for solving the problem of coal blockage of the improved raw coal bin of a coal burning power plant, is suitable for conveying raw coal of various qualities and types, and coal slime, and is also suitable for material conveying stock bins in other industries.
Description
Technical field
The present invention relates to feeder field, be specifically related to a kind of center feeder.
Background technology
Run coal bin is the important component of coal-fired plant boiler coal handling system, generally adopts the structure such as steel structure or steel reinforced concrete, and its circular upper part is square or cylindrical, and bottom be circular cone or square taper, big upper and lower small mouth, and raw coal particle flows by conducting oneself with dignity from top to bottom.Because cross section is shunk gradually, raw coal particle more flows downward, and squeese pressure is larger, very easily causes coal dust to glue wall, knot arch, blocking, cause disconnected coal, thus have a strong impact on the smooth operation of boiler when raw coal humidity or blending coal slime, especially even more serious at plum rain season.At present, for solving run coal bin chute blockage problem, domestic and international power industry generally adopts following measure: the first, manually knock dredging mode, but labour intensity is large, inefficiency, and effectively cannot control flow regime.The second, install block clearing additional, help stream and oscillatory system, such as loosening machine, air bubble, dither etc.Loosening machine utilizes blockage-clearing device to pump inside bulkhead, loosen, but self easily causes new blocking when equipment does not work to blocking coal seam; Air bubble utilizes the expansion shock wave of release suddenly to make blocking raw coal particle recover gravity flowing, but loose area is little, ineffective after easily Coal Seam being become rat hole; Dither be utilize high-frequency vibrate dredging, but due to amplitude little, easily cause more shake more real.Three, install rotation coal bunker loosening apparatus, this kind equipment can only alleviate chute blockage phenomenon to a certain extent, but dredging DeGrain, and adopt suspension to install, there is potential safety hazard, simultaneously when using coal slime, dredger not only cannot play dredging effect, and impact is produced and normally carried out on the contrary.In addition, the anti-blocking equipment of the tower center feeder of the installation also had, because this equipment has larger tower Components installation in run coal bin, and adopt single feed arrangement, occupy run coal bin available space, and upstream device during breakdown of equipment, will be caused out of service, cause fault disconnected coal.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art and a kind of anti-blocking block clearing Be very effective is provided, thoroughly can solve run coal bin chute blockage problem, not take run coal bin available space, be applicable to the rotary-cutting type integration center feeder of various coal.
For achieving the above object, technical scheme of the present invention is: comprise hyperbola or dried shrimp shape center feed hopper, insertion plate door and intelligent electric-controlled case, characterized by further comprising and improves run coal bin, a 3-6 scraper, a 3-6 material-pulling device; Described improvement run coal bin is cylindrical or lower little large flared structure, and centre is provided with circular feed opening; The feed opening of described hyperbola or feed hopper top, dried shrimp shape center Innovation of Connection run coal bin, bottom connects feeder; Insertion plate door is arranged on the lower end of hyperbola or dried shrimp shape center feed hopper; Described scraper, material-pulling device, insertion plate door are controlled by intelligent electric-controlled case;
Described material-pulling device comprises pusher arm, pusher working shaft and pusher reductor, pusher arm is arranged on pusher working shaft, pusher working shaft is connected with pusher speed reducer output shaft by pusher speed reducer coupling, and pusher reductor is fixedly connected with improvement run coal bin lower raft by the flange base of output flange; Material-pulling device is evenly arranged in the circle ring area between the feed opening improving run coal bin and the inwall improving run coal bin;
Described scraper comprises scraper arm, scraper working shaft and scraper reductor, scraper arm is arranged on scraper working shaft, scraper working shaft is connected with scraper speed reducer output shaft by scraper speed reducer coupling, and scraper reductor is fixedly connected with improvement run coal bin lower raft by the flange base of output flange; Described scraper is evenly arranged in the arcuation region that pusher arm rotational trajectory is formed with improvement run coal bin inwall;
Described scraper working shaft is slightly longer than pusher working shaft, and the rotation rail trace layer of described scraper arm is arranged in the last layer of pusher arm rotational trajectory.
Described material-pulling device is 3, is evenly arranged in the circle ring area between the feed opening improving run coal bin and the inwall improving run coal bin by 120 degree, and the minimum length of pusher arm equals feed opening and improves the half of the distance between run coal bin inwall; Described scraper is 3,3 arcuation regions that scraper working shaft is arranged in pusher arm rotational trajectory is formed with improvement run coal bin inwall by 120 degree.
The maximum trajectory tangential that the maximum track that each pusher arm rotates rotates with the improvement inwall of run coal bin and the pusher arm of adjacent material-pulling device.
Described scraper working shaft and pusher arm rotational trajectory tangent, the maximum rotational trajectory of scraper arm is with to improve the inwall of run coal bin tangent, and the length of scraper arm is less than the length of pusher arm.
Described material-pulling device is 4, in the circle ring area being divided into levels to be arranged between the feed opening improving run coal bin and the inwall improving run coal bin, every layer each 2, the extreme length of each pusher arm is improve the half of run coal bin internal diameter, and minimum length equals feed opening and improves the half of the distance between run coal bin inwall; Described scraper is 4, and described scraper working shaft is arranged in 4 arcuation regions that pusher arm rotational trajectory is formed with improvement run coal bin inwall.
Described scraper working shaft and pusher arm rotational trajectory tangent, the maximum rotational trajectory of scraper arm is with to improve the inwall of run coal bin tangent.
Described pusher arm is inclined-plane sickle shaped structure, and the upper-lower height of pusher arm can regulate.
On described insertion plate door, below each symmetry install 2 pneumatic hammers, described improvement run coal bin outer wall install 3-4 pneumatic hammer, described pneumatic hammer connects intelligent electric-controlled case.
The outer wall of described improvement run coal bin and hyperbola or dried shrimp shape center feed hopper are provided with access opening.
principle of work:
Change into cylindrical or tubaeform by the cone bucket part of original for power plant raw coal bucket, raw coal bucket top chute blockage probability is eliminated substantially.When the raw coal particle of raw coal bucket moves from top to bottom, during normal dredging, raw coal particle flow to feeder from feed opening certainly by hyperbola or dried shrimp shape center feed hopper, start pusher arm and scraper arm one by one by the timing of intelligent electric-controlled case simultaneously, prevent raw coal from being formed to put up a bridge to tie in the annular region compacting that feed opening and the inwall improving run coal bin are formed and encircle.
When the faulty coal that raw coal is moister, blending agglomeration is stronger or coal slime, cause thus coal stream thinning or cutout time, according to the monitor signal of the coal current sensor in feeder, intelligent electric-controlled case normally starts scraper arm, material pushing wheel, by scraper arm rotary-cut campaign, raw coal particle is blown into feed opening continually and steadily, and according to load condition, intelligent electric-controlled case controls the feeding coal of scraper arm; Rotated by the waveform of material pushing wheel, raw coal particle is pushed to scraper wall scraper rotary-cut region, make material pushing wheel near zone form flow regime, prevent from forming dead angle and bridging.
The present invention refers to and changes the part of raw coal bucket bottom cone bucket into cylindrical or tubaeform improvement run coal bin, and from such scheme, the present invention has following beneficial effect:
1, boring bucket part changes into cylindrical, can expand the usable capacity improving run coal bin, and controls coal supply flow by the feed of center feeder, meets powder process needs.2, by the rotary-cut campaign of material-pulling device, wiper cleaning can be carried out to improvement run coal bin lower raft raw coal, prevent canopy coal, knot arch; Balanced continuous-feeding simultaneously, ensures that blanking is unimpeded.3, by scraper rotary-cut wave motion, raw coal can be avoided to pile up bonding, form dead angle, keep raw coal particle flow state.4, adopt multiple scraper and multiple material-pulling device, can use simultaneously, also can according to circumstances use one by one, can protect its own system in operation.5, hyperbola or dried shrimp shape center feed hopper are communicated with accessible with improvement run coal bin, gravity flow can be realized when raw coal is dry, and adopt sectional shrinkage ψ be 0.4 ~ 0 low ψ value hyperbola hopper, simultaneously connect two-way corrosion-resistant steel plate and full-bore runner form insertion plate door in lower end.6, in feed hopper bottom, center with improve run coal bin outer wall appropriate location and install low frequency, pneumatic hammer that amplitude is large, structurally eliminate feed hopper chute blockage factor, prevent new blocking.7, realize Based Intelligent Control, can set arbitrarily the stop orientation of pusher arm, by setting, when not using material-pulling device, pusher arm is parked in the position near improving run coal bin bulkhead, in case rest on feed opening when thrust material arm is out of service to hinder raw coal flowing; By coal stream acquisition of signal, regulate feeding coal, and adopt the automatic vibration dredging of PLC programming control pneumatic hammer.8, reasonable in design, structure is simple, easy for installation, do not take run coal bin available space, and it is practical, be mainly used in the chute blockage problem solving coal-burning power plant's run coal bin, and be applicable to carry various raw coal and coal slime, be also applicable to the feed bin of the convey materials such as coal, chemical industry, metallurgy, building materials.
Accompanying drawing explanation
The structural representation that Fig. 1 is material-pulling device of the present invention, scraper is 3.
Fig. 2 is the birds-eye view of Fig. 1.
The birds-eye view that Fig. 3 is material-pulling device of the present invention, scraper is 4.
In figure, 1. improve run coal bin, 2. feed opening, 3. pneumatic hammer, 4. access opening, 5. scraper arm, 6. scraper working shaft, 7. scraper speed reducer coupling, 8. scraper speed reducer output shaft, 9. scraper reductor, 10. pusher arm, 11. pusher working shafts, 12. pusher speed reducer couplings, 13. pusher speed reducer output shafts, 14. pusher reductors, 15. hyperbolas or dried shrimp shape center feed hopper, 16. insertion plate doors, 17. feeders, 18. intelligent electric-controlled casees.
In Fig. 2, the broken circle with pusher arm is the rotational trajectory of pusher arm, and the broken circle with scraper arm is the rotational trajectory of scraper arm, and middle solid line circle is feed opening edge.
In Fig. 3, two solid line great circles are the rotational trajectory of last layer pusher arm, and two dotted line great circles are the rotational trajectory of lower one deck pusher arm, and middle solid line circle is feed opening edge, and periphery four roundlets are the rotational trajectory of scraper arm.
Detailed description of the invention
As shown in Figure 1, the present invention includes improvement run coal bin 1,3 scrapers, 3 material-pulling devices, hyperbola or dried shrimp shape center feed hopper 15, insertion plate door 16, pneumatic hammer 3 and intelligent electric-controlled casees 18 etc.
Described improvement run coal bin 1 is with as well cylindrical, and internal diameter 3-4 rice, height is generally 2-8 rice according to field condition, also can be designed to lower young flared structure.The descending circular feed opening 2 of raw coal is provided with, about diameter 1.2-1.5 rice at the midway location improving run coal bin 1.
Described scraper, material-pulling device, insertion plate door 16, pneumatic hammer 4 are all controlled by intelligent electric-controlled case 18.Described insertion plate door 16 is preferably two-way to be split.Middle part or the bottom of the outer wall of described improvement run coal bin 1 and hyperbola or dried shrimp shape center feed hopper 15 are provided with access opening 4.
The feed opening 2 of the top Innovation of Connection run coal bin 1 of described hyperbola or dried shrimp shape center feed hopper 15, bottom connects feeder 17; Insertion plate door 16 is arranged on the lower end of hyperbola or dried shrimp shape center feed hopper 15.On insertion plate door 16, below each symmetry install 2 pneumatic hammers 4, improve run coal bin 1 outer wall install 3-4 pneumatic hammer 4, raw coal occur block time, dredged by rapping.
Described material-pulling device comprises pusher arm 10, pusher working shaft 11 and pusher reductor 14, pusher arm 10 is arranged on pusher working shaft 11, pusher working shaft 11 is connected with the output shaft 13 of pusher reductor 14 by coupler 12, and pusher reductor 14 is fixedly connected with improvement run coal bin 1 lower raft by the flange base of output flange.As shown in Figure 2, described material-pulling device is arranged in the circle ring area that the feed openings 2 improving run coal bin 1 and the inwall improving run coal bin 1 form by 120 degree, the maximum track that each pusher arm 10 rotates is tangent with the inwall and the adjacent rotational trajectory scraping the pusher arm 10 of material-pulling device improving run coal bin 1, minimumly equal feed opening 2 and the half of spacing of inwall improving run coal bin 1, with slightly larger than half as well.
Described scraper comprises scraper arm 5, scraper working shaft 6 and scraper reductor 9, scraper arm 5 is arranged on scraper working shaft 6, scraper working shaft 6 is connected with the output shaft 8 of scraper reductor 9 by coupler 7, and scraper reductor 9 is fixedly connected with improvement run coal bin 1 lower raft by the flange base of output flange.Shown in composition graphs 1, scraper working shaft 6 is slightly longer than pusher working shaft 11, the rotation rail layer of scraper arm 5 is arranged in last layer that pusher arm revolves 10 transition marks.As shown in Figure 2, scraper working shaft 6 is arranged in pusher arm 10 rotational trajectory and improves in three arcuation regions that run coal bin 1 inwall formed, and the maximum rotational trajectory of scraper arm 5 is tangent with the inwall of improvement run coal bin 1, and the length of scraper arm 5 is less than the length of scraper arm 10.
As shown in Figure 2, described pusher arm 10 is inclined-plane sickle shaped structure, and the upper-lower height of pusher arm 10 can regulate.
As shown in Figure 3, described material-pulling device is 4, in the circle ring area that the feed opening 2 being divided into levels to be arranged in improvement run coal bin 1 and the inwall improving run coal bin 1 form, every layer each 2, the extreme length of each pusher arm 10 is improve the half of run coal bin 1 internal diameter, minimum length equals feed opening 2 and improves the half of the distance between run coal bin 1 inwall, with slightly larger than half as well; Described scraper is 4, and described scraper working shaft 6 is arranged in 4 arcuation regions that pusher arm 10 rotational trajectory is formed with improvement run coal bin 1 inwall, and the maximum rotational trajectory of scraper arm 5 is tangent with the inwall improving run coal bin 1.
Claims (9)
1. a rotary-cutting type integration center feeder, comprises hyperbolic center feed hopper, insertion plate door and intelligent electric-controlled case, it is characterized in that: also comprise and improve run coal bin (1), a 3-6 scraper, a 3-6 material-pulling device; Described improvement run coal bin (1) is cylindrical or lower little large flared structure, and centre is provided with circular feed opening (2); The feed opening (2) on described hyperbolic center feed hopper (15) top Innovation of Connection run coal bin (1), bottom connects feeder (17); Insertion plate door (16) is arranged on the lower end of hyperbolic center feed hopper (15); Described scraper, material-pulling device, insertion plate door (16) are controlled by intelligent electric-controlled case (18);
Described material-pulling device comprises pusher arm (10), pusher working shaft (11) and pusher reductor (14), pusher arm (10) is arranged on pusher working shaft (11), pusher working shaft (11) is connected with pusher speed reducer output shaft (13) by pusher speed reducer coupling (12), and pusher reductor (14) is fixedly connected with improvement run coal bin (1) lower raft by the flange base of output flange; Material-pulling device is evenly arranged in the circle ring area between the feed opening (2) improving run coal bin (1) and the inwall improving run coal bin (1);
Described scraper comprises scraper arm (5), scraper working shaft (6) and scraper reductor (9), scraper arm (5) is arranged on scraper working shaft (6), scraper working shaft (6) is connected with scraper speed reducer output shaft (8) by scraper speed reducer coupling (7), and scraper reductor (9) is fixedly connected with improvement run coal bin (1) lower raft by the flange base of output flange; Described scraper is evenly arranged in the arcuation region that pusher arm (10) rotational trajectory is formed with improvement run coal bin (1) inwall;
Described scraper working shaft (6) is slightly longer than pusher working shaft (11), and the rotation rail trace layer of described scraper arm (5) is arranged in the last layer of pusher arm (10) rotational trajectory.
2. rotary-cutting type integration center feeder as claimed in claim 1, is characterized in that:
Described material-pulling device is 3, be evenly arranged in the circle ring area between the feed opening (2) improving run coal bin (1) and the inwall improving run coal bin (1) by 120 degree, the minimum length of pusher arm (10) equals feed opening (2) and improves the half of the distance between run coal bin (1) inwall; Described scraper is 3,3 arcuation regions that scraper working shaft (6) is arranged in pusher arm (10) rotational trajectory is formed with improvement run coal bin (1) inwall by 120 degree.
3. rotary-cutting type integration center feeder as claimed in claim 2, is characterized in that: the maximum trajectory tangential that the maximum track that each pusher arm (10) rotates rotates with the pusher arm (10) of the inwall and adjacent material-pulling device that improve run coal bin (1).
4. rotary-cutting type integration center feeder as claimed in claim 2, it is characterized in that: described scraper working shaft (6) is tangent with pusher arm (10) rotational trajectory, scraper arm (5) maximum rotational trajectory is tangent with the inwall improving run coal bin (1), and the length of scraper arm (5) is less than the length of pusher arm (10).
5. rotary-cutting type integration center feeder as claimed in claim 1, it is characterized in that: described material-pulling device is 4, in the circle ring area being divided into levels to be arranged between the feed opening (2) improving run coal bin (1) and the inwall improving run coal bin (1), every layer each 2, the extreme length of each pusher arm (10) is improve the half of run coal bin (1) internal diameter, and minimum length equals feed opening (2) and improves the half of the distance between run coal bin (1) inwall; Described scraper is 4, and described scraper working shaft (6) is arranged in 4 arcuation regions that pusher arm (10) rotational trajectory is formed with improvement run coal bin (1) inwall.
6. rotary-cutting type integration center feeder as claimed in claim 5, it is characterized in that: described scraper working shaft (6) is tangent with pusher arm (10) rotational trajectory, scraper arm (5) maximum rotational trajectory is tangent with the inwall improving run coal bin (1).
7. rotary-cutting type integration center feeder as claimed in claim 1, is characterized in that: described pusher arm (10) is inclined-plane sickle shaped structure, and the upper-lower height of pusher arm (10) can regulate.
8. rotary-cutting type integration center feeder as claimed in claim 1, it is characterized in that: on described insertion plate door (16), below each symmetry install 2 pneumatic hammers (3), install 3-4 pneumatic hammer (3) at described improvement run coal bin (1) outer wall, described pneumatic hammer (3) connects intelligent electric-controlled case (18).
9. rotary-cutting type integration center feeder as claimed in claim 1, is characterized in that: the outer wall of described improvement run coal bin (1) and hyperbolic center feed hopper (15) are provided with access opening (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210439058.7A CN102874608B (en) | 2012-11-07 | 2012-11-07 | Rotary-cut type integrated central feeding machine |
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| CN201210439058.7A CN102874608B (en) | 2012-11-07 | 2012-11-07 | Rotary-cut type integrated central feeding machine |
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| CN102874608A CN102874608A (en) | 2013-01-16 |
| CN102874608B true CN102874608B (en) | 2015-04-01 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103129980B (en) * | 2013-02-17 | 2015-05-06 | 赵东楼 | Integrated central feeder |
| CN103693318A (en) * | 2013-12-17 | 2014-04-02 | 上海发电设备成套设计研究院 | Hopper anti-blocking device |
| CN107600752A (en) * | 2017-09-30 | 2018-01-19 | 河南省中利工矿设备制造有限公司 | Suitable for the dredging system of center feeder |
| CN111746952A (en) * | 2020-06-18 | 2020-10-09 | 张红卫 | Intelligent electromechanical blockage clearing device for material bin |
| CN113104266B (en) * | 2021-06-15 | 2021-08-24 | 山东蓝海水产有限公司 | A canning equipment for shrimp is smooth to be processed |
| CN115258431B (en) * | 2022-08-16 | 2023-08-08 | 国能宝清煤电化有限公司 | Raw coal bin body structure |
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| JP2005169270A (en) * | 2003-12-11 | 2005-06-30 | Eko Advance:Kk | Storage and discharge device |
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| EP0521794A1 (en) * | 1991-07-05 | 1993-01-07 | Commissariat A L'energie Atomique | Apparatus for storing and conveying ice-balls, without sticking to each other, from their place of production to their place of use, where they are propelled against a target |
| DE19602227A1 (en) * | 1996-01-23 | 1997-07-24 | Bayer Ag | Storage container for cohesive pourable material |
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