CN103144965B - A kind of coal dust air-transport system and method thereof - Google Patents
A kind of coal dust air-transport system and method thereof Download PDFInfo
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- CN103144965B CN103144965B CN201310079007.2A CN201310079007A CN103144965B CN 103144965 B CN103144965 B CN 103144965B CN 201310079007 A CN201310079007 A CN 201310079007A CN 103144965 B CN103144965 B CN 103144965B
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- 239000002817 coal dust Substances 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000003860 storage Methods 0.000 claims abstract description 18
- 239000006052 feed supplement Substances 0.000 claims description 32
- 239000000428 dust Substances 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 238000005054 agglomeration Methods 0.000 abstract description 3
- 230000002776 aggregation Effects 0.000 abstract description 3
- 238000010926 purge Methods 0.000 abstract description 3
- 238000009422 external insulation Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000003245 coal Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 208000031872 Body Remains Diseases 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
- F23K3/02—Pneumatic feeding arrangements, i.e. by air blast
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/50—Pipe mixers, i.e. mixers wherein the materials to be mixed flow continuously through pipes, e.g. column mixers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2203/00—Feeding arrangements
- F23K2203/008—Feeding devices for pulverulent fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2203/00—Feeding arrangements
- F23K2203/20—Feeding/conveying devices
- F23K2203/201—Feeding/conveying devices using pneumatic means
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Transport Of Granular Materials (AREA)
Abstract
The invention provides a kind of coal dust air-transport system, comprise compressed air source unit (1), storage bin (14), measuring chute (20), to batch can (23), gauging device (7), feeding device (24), pressure relief device (18), control module, first conveying passage (19), second conveying passage (21), wherein: described storage bin (14), measuring chute (20), connect successively from top to bottom to batch can (23), be connected by the first conveying passage (19) between storage bin (14) with measuring chute (20), measuring chute (20) is connected by the second conveying passage (21) with between batch can (23).The present invention also provides corresponding method.Adopt pressurized type coal dust air-transport system of the present invention and method, effectively can ensure the continuity that coal dust is carried and homogeneity, and effectively can improve coal dust wall agglomeration problems by the method that tank body external insulation and tank interior pressurising purge.
Description
Technical field
The present invention relates to a kind of pneumatic material conveying system, particularly relate to a kind of tank body pressurized type, can continuously, evenly, the system and method for quantitative pulverized coal conveying.
Background technology
Pneumatic Conveying Technology, because structure is simple, leakproofness strong, be applicable to the advantage of long-distance sand transport, is applied in a lot of industry.But needing to consider more multifactor in the application of Geldart-D particle on dwarf boiler, kiln, when comprising burning, the feature such as the large and blowing out at any time of load variations bring problem all can to the normal conveying of coal dust, causes the state that the conveying out of reach of coal dust is desirable; In addition, use due to boiler and manage the competency profiling of personnel higher, the operation of personnel and the management of the boiler accuracy often affected in the manipulation of Geldart-D particle time not in place.In addition, containing a large amount of lime-ash in pulverized coal flame, also pollute the environment while these lime-ash blocking kiln, therefore the urgency of Industrial Boiler coal fines cleaning combustion technology application is stronger, coal dust firing can be made to stablize by the Geldart-D particle rationally accurately controlled, be easy to regulate and heat efficiency high.So how to resolve Industrial Boiler coal dust transportation problem just become one of domestic a lot of expert long-standing, be mainly reflected in coal dust in powder storehouse in blanking supply process, its stability for powder and controllability are difficult to be guaranteed, then continuity and the homogeneity of coal dust conveying is affected, be embodied in: coal dust flowing instability in feed bin, neglect fast suddenly slow; Sometimes tie bow member bridge, coal dust cannot draw off; Sometimes feed bin central perforation and around coal dust stagnate motionless; Sometimes shove more than, whole storehouse material all draws off quickly, uncontrollable.
A lot of people is from external cause, propose change feed bin structure, vibrating mechanism be installed or the methods such as moisture absorption pipe are set and solve or prevent coal dust agglomeration problems, such as change the angle [alpha] of powder bulkhead face and horizontal surface or be lining with special material therein, to reach the effect reducing coal dust and feed bin wall friction force; Moisture absorption pipe is set to reduce the steam of feed bin inside thus the dew on reduction feed bin wall.Really, these methods all achieve certain effect, but along with the prolongation of time of run, are difficult to avoid coal dust not lump on feed bin wall, much truely also prove that these methods can only play the prevention effect of short-term.In addition, when being used for the material of the fine particle size such as pulverized coal conveying when positive pneumatic conveying system, also to solve airflow leaks problem, easily cause the air-flow in delivery duct to spring back in feeding device because the sealing property of feeding device is not good, the interruption of feed time serious, can be caused.
Summary of the invention
For prior art Problems existing, the invention provides a kind of coal dust air-transport system and method thereof, efficiently solve coal dust conveying stability heavy handled problem, the continuity that coal dust is carried and homogeneity can be ensured well, also efficiently solve the negative effect that coal dust agglomeration problems is brought simultaneously.
According to an aspect of the present invention, a kind of coal dust air-transport system is provided, comprise compressed air source unit 1, storage bin 14, measuring chute 20, to batch can 23, gauging device 7, feeding device 24, pressure relief device 18, control module, the first conveying passage 19, second conveying passage 21, wherein: described storage bin 14, measuring chute 20, to connect successively from top to bottom to batch can 23, be connected by the first conveying passage 19 between storage bin 14 with measuring chute 20, measuring chute 20 is connected by the second conveying passage 21 with between batch can 23, and gauging device 7 connects measuring chute 20;
Described compressed air source unit 1 is communicated to measuring chute 20, to batch can 23, feeding device 24, measuring chute 20 and give the gas flow loop passage 5 being provided with controlled break-make between batch can 23;
The upper end of described measuring chute 20 is provided with pressure relief device 18;
The described lower end of batch can 23 of giving is provided with feeding device 24, is finally transported in burning installation after being mixed by coal dust by feeding device 24 with the air coming from compressed air source unit 1;
Described control module for controlling the mode of operation of compressed air source unit 1, pressure relief device 18, feeding device 24, and controls as the break-make of lower device: gas flow loop passage 5, first conveying passage 19, second conveying passage 21, pipeline between compressed air source unit 1 and measuring chute 20, compressed air source unit and to the pipeline between batch can 23, pipeline between compressed air source unit 1 and feeding device 24.
Preferably, described compressed air source unit 1, it is connected with total pressurised pipeline boiler check valve 9 entrance point, total pressurised pipeline boiler check valve 9 exit end is connected with the entrance point of a threeway, first exit end of threeway is connected with the entrance point of measuring chute equalizer valve 10, second exit end of threeway is connected with giving the entrance point of batch can equalizer valve 4, the exit end of measuring chute equalizer valve 10 is connected with the upper end of measuring chute 20, be connected with giving the upper end of batch can 23 to the exit end of batch can equalizer valve 4, part between first exit end of threeway and the second exit end, measuring chute 20 and give batch can 23 form gas flow loop passage 5.
Preferably, the arranged outside of described measuring chute 20 has measuring chute chuck layer 6, and the described arranged outside of batch can 23 of giving has to batch can chuck layer 3, and described compressed air source unit 1 is by described measuring chute chuck layer 6 and/or be connected to described feeding device 24 to batch can chuck layer 3.
Preferably, described feeding device 24, comprise: mixing device 25, feeder 26, frequency control motor 27, mixer 28, delivery duct 29, mixing device 25 is arranged on to the lower end of batch can 23, frequency control motor 27 is connected with mixing device 25, feeder 26 respectively, the import of mixer 28 connects discharging opening, the compressed air source unit 1 of feeder 26 respectively, the outlet connecting conveying pipe road 29 of mixer 28; The two ends of described feeder 26 are provided with gas sealing mechanism 261; The import of described gas sealing mechanism 261 is connected with tracheae 262.
Preferably, described first conveying passage 19 comprise be connected to hand valve 13 between described storage bin 14 and measuring chute 20 in turn, softly connect 12, charging valve 11, described second conveying passage 21 comprises feed supplement valve 22.
Preferably, described compressed air source unit 1 is roots blower, Air compressor or storage tank, and described feeder 26 is a kind of in rotating blade feeder, spiral powder conveying machine, Venturi loader or their array configuration.
Preferably, the top of described feeder 26 is provided with mixing device 25.
Preferably, described pressure relief device 18 is as any one in lower device:
Pulse dust collector, described pulse dust collector is directly communicated with air, is provided with blowdown valve 16 and pulse valve 17 at the top of described pulse dust collector;
Freeing pipe, described freeing pipe is directly connected with the inside of described measuring chute 20, described freeing pipe is provided with blowdown valve 16 and softly connects.
Preferably, described gauging device 7 is arranged on the urceolus of described measuring chute 20 circumferentially, arranges along urceolus even circumferential.
Preferably, pass into described measuring chute chuck layer 6 and/or to the gas flow temperature in batch can chuck layer 3 between 30 DEG C ~ 60 DEG C.
According to another aspect of the present invention, also provide a kind of coal dust pneumatic conveying method, by initial condition, under the control of control module, first perform initialization step, then circulation performs blanking step and feed supplement step, wherein:
Described initial condition, is specially: feed supplement valve 22, measuring chute equalizer valve 10, charging valve 11 are closed, and blowdown valve 16 is opened;
Described initialization step, be specially: first open charging valve 11, vibration valve 15, make coal dust expect measuring chute 20 14 from storage bin, until when the coal dust total weight in measuring chute 20 reaches the blanking higher limit set by gauging device 7, close charging valve 11, vibration valve 15; Then open feed supplement valve 22, make coal dust from measuring chute 20 feed supplement to batch can 23, until when the coal dust in measuring chute (20) has been let out completely, close feed supplement valve 22, start feeding device 24, compressed air source unit 1, opens Jacket outlet valve 30, to batch can equalizer valve 4;
Described blanking step, be specially: when the coal dust weight in measuring chute 20 reaches the blanking lower limit set by gauging device 7, open charging valve 11, vibration valve 15, performing blanking action makes coal dust expect measuring chute 20 14 from storage bin, until when the coal dust weight in measuring chute 20 reaches the blanking higher limit set by gauging device 7, close charging valve 11, vibration valve 15, blowdown valve 16;
Described feed supplement step, be specially: open measuring chute equalizer valve 10, when measuring chute 20 is substantially equal with the pressure given in batch can 23, opens feed supplement valve 22, start to perform feed supplement action, make coal dust from measuring chute 20 feed supplement to give batch can 23, owing to reducing to the volume in batch can 23, gas can be entered in measuring chute 20 by gas flow loop passage 5, until when the coal dust in measuring chute (20) has been let out completely, close feed supplement valve 22, measuring chute equalizer valve 10, open blowdown valve 16.
Preferably, the arranged outside of described measuring chute 20 has measuring chute chuck layer 6, and the described arranged outside of batch can 23 of giving has to batch can chuck layer 3, described measuring chute chuck layer 6 and/or give in batch can chuck layer 3 and pass into the air-flow of temperature between 30 DEG C ~ 60 DEG C.
According to system provided by the invention and method thereof in operational process, the air-flow of main line is through measuring chute and the chuck layer giving batch can, good insulation effect can be played to the inner core of tank body, reduce the temperature difference even avoided inside and outside tank body, inhibit the condensation of tank interior steam and the migration of coal dust moisture well, solve the problem of coal dust caking well; Simultaneously, the air-flow of auxiliary pipeline continues to purge tank interior pressurising, not only improve the flowing power of coal dust in tank body, and due to continue purging be also unfavorable for that coal dust bonds on wall, most importantly the air pressure continued provides strong propelling thrust can make coal dust fall more swimmingly, ensure that the continuity that coal dust is carried very well.In addition, during due to system cloud gray model, the external force condition in tank body remains identical, the homogeneity of strong guarantee coal dust conveying, in addition by regulating the frequency of variable-frequency motor can convert operational throughput timely and appropriately according to production requirement.Under the effect of computer control system, realize full automaticity, totally-enclosed, can quantitatively, continuously, pulverized coal conveying equably.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is the structural representation according to coal dust air-transport system provided by the invention;
Fig. 2 is the structural representation according to feeding device in coal dust air-transport system provided by the invention;
Fig. 3 is the program flow diagram according to coal dust pneumatic conveying method provided by the invention.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
As Fig. 1 can know, the main line 2 of system provided by the present invention is first connected with delivery duct with the batch can chuck layer 3 of giving to batch can 23 arranged outside through the measuring chute chuck layer 6 of measuring chute 20 arranged outside by total pressurised pipeline 8 again, and roots blower gas flow temperature out has 30 DEG C ~ 60 DEG C, in operational process, air-flow continues around measuring chute 20 with to the chuck layer of batch can 23, good insulation effect can be played to tank body inner core, reduce the temperature difference of tank body inner core wall and coal dust on the one hand, inhibit coal dust moisture to move to wall; On the other hand because wall surface temperature is still higher, be unfavorable for the condensation of steam.Because two aspects all reduce the possibility of coal dust caking, for guaranteeing that the continuity that coal dust is carried and homogeneity serve useful effect.
When system is in running state, hand valve 13, be all in normally open to batch can equalizer valve 4, the charging valve 11 connecting storage bin 14 cuts out, the blowdown valve 16 at pulse dust collector top cuts out, measuring chute equalizer valve 10 is opened, connect and open to the feed supplement valve 22 of batch can 23, namely now measuring chute 20 is in connected state with giving batch can 23, and coal dust can enter feeding device more swimmingly under the effect of measuring chute inflation pressure and self gravitation.
When the coal dust weight in tank body reaches the reinforced lower limit set by gauging device 7, signal feedback, to control module, controls the opening and closing of respective valves to meet feed conditions by control module.In order to make the normal operation of not influential system in reinforced process and keep identical external force condition, control module controls feed supplement valve 22 and measuring chute equalizer valve 10, feed supplement valve 22 and measuring chute equalizer valve 10 are closed, now to remaining coal dust in batch can 23 can continue to be transferred toward destination (realization of this function is corresponding with aforementioned system architecture of the present invention) under the effect of sub-thread inflation pressure and self gravitation, after feed supplement valve 22 cuts out, the blowdown valve 16 of unbalanced pulse dust remover roof, complete the pressure release work to measuring chute, unbalanced pulse valve 17 again, (filtering net vibrates to carry out dedusting, remove dust), so that the material be conducive in powder storehouse relies on deadweight to fall smoothly, charging valve 11 is opened after pressure let out by measuring chute, system just starts to carry out reinforced action.
When the coal dust weight in tank body reaches the reinforced higher limit set by gauging device 7, signal feeds back to control module again, first control module sends the instruction of closing charging valve 11, after charging valve 11 cuts out completely, reinforced action also just completes, and then blowdown valve 16 is closed, open measuring chute equalizer valve 10 to start to carry out pressurising to measuring chute 20, then feed supplement valve 22 and pulse valve 17 is opened, start to carry out feed supplement action, reduce owing to giving the volume in batch can 23, can be entered in described measuring chute 20 by gas flow loop passage 5 to reach the object be vented to batch can 23 to the gas in batch can 23, thus feed supplement step can be completed smoothly.
Coal dust in storehouse 20 to be batched complete to give batch can 23 feed supplement step after, system gets back to initial blanking supplying step, again performs described circulation step.Due to system constantly repeat from initial launch, weight of material reach reinforced lower limit, feed in raw material, weight reaches the reinforced upper limit, it is reinforced to stop, starting the periodicity action that the processes such as feed supplement get back to initial operating state again, in whole process, the switching of each valve has all been controlled by control module, and ensure that coal dust is carried at the falls downward of sub-thread inflation pressure all the time, thus effectively ensure continuity and the homogeneity of coal dust conveying.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (12)
1. a coal dust air-transport system, it is characterized in that, comprise compressed air source unit (1), storage bin (14), measuring chute (20), to batch can (23), gauging device (7), feeding device (24), pressure relief device (18), control module, first conveying passage (19), second conveying passage (21), wherein: described storage bin (14), measuring chute (20), connect successively from top to bottom to batch can (23), be connected by the first conveying passage (19) between storage bin (14) with measuring chute (20), measuring chute (20) is connected by the second conveying passage (21) with between batch can (23), gauging device (7) connects measuring chute (20),
Described compressed air source unit (1) is communicated to measuring chute (20), to batch can (23), feeding device (24), measuring chute (20) and give the gas flow loop passage (5) being provided with controlled break-make between batch can (23);
The upper end of described measuring chute (20) is provided with pressure relief device (18);
The described lower end of batch can (23) of giving is provided with feeding device (24), is finally transported in burning installation after being mixed by coal dust by feeding device (24) with the air coming from compressed air source unit (1);
Described control module for controlling the mode of operation of compressed air source unit (1), pressure relief device (18), feeding device (24), and controls as the break-make of lower device: gas flow loop passage (5), the first conveying passage (19), the second conveying passage (21), pipeline between compressed air source unit (1) and measuring chute (20), compressed air source unit (1) and to the pipeline between batch can (23), pipeline between compressed air source unit (1) and feeding device (24).
2. coal dust air-transport system according to claim 1, it is characterized in that, described compressed air source unit (1), it is connected with total pressurised pipeline boiler check valve (9) entrance point, total pressurised pipeline boiler check valve (9) exit end is connected with the entrance point of a threeway, first exit end of threeway is connected with the entrance point of measuring chute equalizer valve (10), second exit end of threeway is connected with giving the entrance point of batch can equalizer valve (4), the exit end of measuring chute equalizer valve (10) is connected with the upper end of measuring chute (20), be connected with giving the upper end of batch can (23) to the exit end of batch can equalizer valve (4), part between first exit end of threeway and the second exit end, measuring chute (20) and give batch can (23) form gas flow loop passage (5).
3. coal dust air-transport system according to claim 1, it is characterized in that, the arranged outside of described measuring chute (20) has measuring chute chuck layer (6), the described arranged outside of batch can (23) of giving has to batch can chuck layer (3), and described compressed air source unit (1) is by described measuring chute chuck layer (6) and/or be connected to described feeding device (24) to batch can chuck layer (3).
4. coal dust air-transport system according to claim 1, it is characterized in that, described feeding device (24), comprise: mixing device (25), feeder (26), frequency control motor (27), mixer (28), delivery duct (29), mixing device (25) is arranged on to the lower end of batch can (23), frequency control motor (27) respectively with mixing device (25), feeder (26) is connected, the import of mixer (28) connects the discharging opening of feeder (26) respectively, compressed air source unit (1), the outlet connecting conveying pipe road (29) of mixer (28), the two ends of described feeder (26) are provided with gas sealing mechanism (261), the import of described gas sealing mechanism (261) is connected with tracheae (262).
5. coal dust air-transport system according to claim 1, it is characterized in that, described first conveying passage (19) comprises and is connected to hand valve (13) between described storage bin (14) and measuring chute (20) in turn, softly connects (12), charging valve (11), and described second conveying passage (21) comprises feed supplement valve (22).
6. coal dust air-transport system according to claim 1, it is characterized in that, described compressed air source unit (1) is roots blower, Air compressor or storage tank, and described feeder (26) is rotating blade feeder, a kind of in spiral powder conveying machine, Venturi loader or their array configuration.
7. coal dust air-transport system according to claim 4, is characterized in that, the top of described feeder (26) is provided with mixing device (25).
8. coal dust air-transport system according to claim 1, is characterized in that, described pressure relief device (18) is as any one in lower device:
Pulse dust collector, described pulse dust collector is directly communicated with air, is provided with blowdown valve (16) and pulse valve (17) at the top of described pulse dust collector;
Freeing pipe, described freeing pipe is directly connected with the inside of described measuring chute (20), described freeing pipe is provided with blowdown valve (16) and softly connects.
9. coal dust air-transport system according to claim 1, is characterized in that, described gauging device (7) is arranged on the urceolus of described measuring chute (20) circumferentially, arranges along urceolus even circumferential.
10. coal dust air-transport system according to claim 3, is characterized in that, pass into described measuring chute chuck layer (6) and/or to the gas flow temperature in batch can chuck layer (3) between 30 DEG C ~ 60 DEG C.
11. 1 kinds of coal dust pneumatic conveying methods, is characterized in that, by initial condition, under the control of control module, first perform initialization step, and then circulation performs blanking step and feed supplement step, wherein:
Described initial condition, is specially: feed supplement valve (22), to batch can equalizer valve (4), measuring chute equalizer valve (10), charging valve (11) close, blowdown valve (16) is opened;
Described initialization step, be specially: first open charging valve (11), vibration valve (15), coal dust is made to expect measuring chute (20) from storage bin (14), until when the coal dust total weight in measuring chute (20) reaches the blanking higher limit set by gauging device (7), close charging valve (11), vibration valve (15); Then feed supplement valve (22) is opened, make coal dust from measuring chute (20) feed supplement to batch can (23), when reaching the feed supplement higher limit set by gauging device (7) to the coal dust weight in batch can (23), close feed supplement valve (22), start feeding device (24), compressed air source unit (1), opens Jacket outlet valve (30), to batch can equalizer valve (4);
Described blanking step, be specially: when the coal dust weight in measuring chute (20) reaches the blanking lower limit set by gauging device (7), open charging valve (11), vibration valve (15), performing blanking action makes coal dust expect measuring chute (20) from storage bin (14), until when the coal dust weight in measuring chute (20) reaches the blanking higher limit set by gauging device (7), close charging valve (11), vibration valve (15), blowdown valve (16);
Described feed supplement step, be specially: open measuring chute equalizer valve (10), when measuring chute (20) is substantially equal with the pressure given in batch can (23), open feed supplement valve (22), start to perform feed supplement action, make coal dust from measuring chute (20) feed supplement to batch can (23), reduce owing to giving the volume in batch can (23), gas can enter in measuring chute (20) by gas flow loop passage (5), until when the coal dust in measuring chute (20) has been let out completely, close feed supplement valve (22), measuring chute equalizer valve (10), open blowdown valve (16).
12. coal dust pneumatic conveying methods according to claim 11, it is characterized in that, the arranged outside of described measuring chute (20) has measuring chute chuck layer (6), the described arranged outside of batch can (23) of giving has to batch can chuck layer (3), described measuring chute chuck layer (6) and/or give in batch can chuck layer (3) and pass into the air-flow of temperature between 30 DEG C ~ 60 DEG C.
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| CN103789044B (en) * | 2014-01-22 | 2015-07-15 | 煤炭科学技术研究院有限公司 | Coal powder conveying device |
| CN104369281A (en) * | 2014-12-08 | 2015-02-25 | 苏州华东橡胶工业有限公司 | Mixing system for producing rubber products |
| CN107854966A (en) * | 2017-11-20 | 2018-03-30 | 深圳东方锅炉控制有限公司 | A kind of method and system for improving high basic metal coal and staiing coking |
| CN107826771A (en) * | 2017-11-28 | 2018-03-23 | 淮南东华欧科矿山支护设备有限责任公司 | New type mining powdery or granular material air-transport system |
| CN113716348B (en) * | 2021-09-30 | 2023-04-07 | 湖南皇爷食品有限公司 | Pneumatic conveying system for continuously conveying betel nuts and having automatic cleaning function |
| CN115285533B (en) * | 2022-08-10 | 2024-04-19 | 河南佰利联新材料有限公司 | Charging device and method for granular materials, electronic equipment and storage medium |
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| US4593727A (en) * | 1981-10-19 | 1986-06-10 | Paul Wurth S.A. | Apparatus and method for controlling the contents and the filling of a distribution tank for pulverized materials |
| CN2584575Y (en) * | 2002-11-18 | 2003-11-05 | 承德市开发区盛方电子有限公司 | Gravity autoamtic charging metering installation for wind power conveying system |
| CN201545512U (en) * | 2009-06-10 | 2010-08-11 | 陈毅 | Limestone continuous conveying system |
| CN203187097U (en) * | 2013-03-12 | 2013-09-11 | 上海题桥能源科技发展有限公司 | Coal dust pneumatic transmission system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1017144A (en) * | 1996-07-02 | 1998-01-20 | Kumakura Kogyo Kk | Mobile type silo and plant system |
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2013
- 2013-03-12 CN CN201310079007.2A patent/CN103144965B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4593727A (en) * | 1981-10-19 | 1986-06-10 | Paul Wurth S.A. | Apparatus and method for controlling the contents and the filling of a distribution tank for pulverized materials |
| CN2584575Y (en) * | 2002-11-18 | 2003-11-05 | 承德市开发区盛方电子有限公司 | Gravity autoamtic charging metering installation for wind power conveying system |
| CN201545512U (en) * | 2009-06-10 | 2010-08-11 | 陈毅 | Limestone continuous conveying system |
| CN203187097U (en) * | 2013-03-12 | 2013-09-11 | 上海题桥能源科技发展有限公司 | Coal dust pneumatic transmission system |
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| CN103144965A (en) | 2013-06-12 |
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