CN109928215A - A kind of balk cargo pneumatic conveying experimental provision and method - Google Patents
A kind of balk cargo pneumatic conveying experimental provision and method Download PDFInfo
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- CN109928215A CN109928215A CN201910305934.9A CN201910305934A CN109928215A CN 109928215 A CN109928215 A CN 109928215A CN 201910305934 A CN201910305934 A CN 201910305934A CN 109928215 A CN109928215 A CN 109928215A
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Abstract
The invention discloses a kind of balk cargo pneumatic conveying experimental provision and methods, belong to pneumatic conveying field, which includes: air supply system, are made of the sequentially connected compressor of steam line, air accumulator, gas supply main valve, sub-cylinder；Injection system, by at least one injection tank, with the comparable defeated coal valve group of injection tank quantity at, controlling valve of voltage regulation of the injection tank by pressure stabilizing pipeline and thereon is connected to sub-cylinder, injection tank also passes through fluidisation pipeline and fluidisation regulating valve thereon is connected to sub-cylinder, and injection tank exports the injection pipeline for being provided with defeated coal valve；Powder collecting system, it is made of receipts powder tank sequentially connected outside the one end of injection pipeline far from injection tank, cyclone dust collectors, bag filter, it receives that powder tank also passes through dress powder pipeline and dress powder valve thereon is connected to injection tank, receives and be additionally provided with decompression control valve between powder tank and injection tank.The present invention can be realized circulate operations, the whole process such as material pressurization, fluidisation, blowing and storage and recycle progress in confined space, effectively improve conventional efficient, reduce experimental cost.
Description
Technical field
The invention belongs to Pneumatic Conveying Technology fields, and in particular to a kind of balk cargo pneumatic conveying experimental provision and method.
Background technique
Balk cargo Pneumatic Conveying Technology is that balk cargo is transferred energy in pipeline using high pressure gas as power,
Achieve the purpose that remotely to carry and convey.Since to be related to field wide for the technology, association subject is more, belongs to an integrated technology,
So far fail to form perfect theoretical research system.There is also some pilot studys for domestic colleges and universities, but due to experimental provision energy
Often there is relatively large deviation when carrying out industrial application in power and dimension-limited, research achievement.Pneumatic conveying is due to by material spy
Property, the factors such as gas pressure, gas flow, pipeline type selecting, pipe arrangement influence, the research achievement between each enterprise still have compared with
Big difference.
Summary of the invention
In view of this, one of the objects of the present invention is to provide a kind of balk cargo pneumatic conveying experimental provision, not only precision
Meet scientific research requirements, experiment condition can reach pilot-plant level.The second object of the present invention is by material
Conveying characteristic carries out experimental study, forms the pneumatic conveying theoretical system of complete set, provides this balk cargo pneumatic conveying
The experimental method of experimental provision, for promoting the development of this technology most important.
The present invention is achieved through the following technical solutions:
A kind of balk cargo pneumatic conveying experimental provision provided by the invention, comprising: air supply system is successively connected by steam line
Compressor, air accumulator, gas supply main valve, the sub-cylinder composition connect；Injection system, by least one injection tank and injection tank quantity
Comparable defeated coal valve group is at controlling valve of voltage regulation of the injection tank by pressure stabilizing pipeline and thereon is connected to sub-cylinder, and injection tank is also logical
It crosses fluidisation pipeline and fluidisation regulating valve thereon is connected to sub-cylinder, injection tank exports the injection pipeline for being provided with defeated coal valve；
Powder collecting system, by receipts powder tank sequentially connected outside the one end of injection pipeline far from injection tank, cyclone dust collectors, bag filter
Composition, receives that powder tank also passes through dress powder pipeline and dress powder valve thereon is connected to injection tank, receives and is additionally provided between powder tank and injection tank
Decompression control valve.
Further, oil water separator, the injection tank are additionally provided between the compressor and air accumulator in the air supply system
It is equipped with meausring apparatus.
Further, the injection pipeline uses helix shape arragement construction, which is provided with multiple transparent glass tubes and spray
Moving bend head is blown, is being additionally provided with check-valves close to the side for receiving powder tank in the injection pipeline.
Further, the sub-cylinder also passes through tonifying Qi pipeline and tonifying Qi regulating valve thereon is connected to injection pipeline, described
Tonifying Qi stop valve is additionally provided on tonifying Qi pipeline, the quantity of the tonifying Qi stop valve is suitable with the quantity of injection tank, and each tonifying Qi is cut
Disconnected valve corresponds respectively to the injection pipeline between single injection tank and defeated coal valve.
Further, it is additionally provided with pressure stabilizing stop valve on the pressure stabilizing pipeline, the quantity of the pressure stabilizing stop valve and injection tank
Quantity is suitable, and each pressure stabilizing stop valve is respectively corresponded with each injection tank.
Further, it is additionally provided with fluidisation stop valve on the fluidisation pipeline, the quantity of the fluidisation stop valve and injection tank
Quantity is suitable, and each fluidisation stop valve is respectively corresponded with each injection tank.
Further, the first order pressure regulator valve of powder tank by first order relief tube and thereon of receiving is connected to cyclone dust removal
Device, second level pressure regulator valve of the cyclone dust collectors by second level relief tube and thereon are connected to bag filter.
Further, the bag filter also passes through the first powder retrieving pipe and the first unloading valve thereon is connected to injection tank,
The cyclone dust collectors also pass through the second powder retrieving pipe and the second unloading valve thereon is connected to and receives powder tank, on first powder retrieving pipe
Powder stop valve is being additionally provided with back close to injection tank side.
Further, exhaust pipe is additionally provided on the bag filter.
The present invention also utilizes the experimental method of above-mentioned balk cargo pneumatic conveying experimental provision, comprising:
Step 1), material first passage tank car, which is fitted into, to be received in powder tank, and decompression control valve and dress powder valve are opened, and material passes through dress
Powder pipeline is fallen under gravity into injection tank, when charge reaches setting value, closes dress powder valve and decompression control valve；
Step 2) starts air supply system, opens gas supply main valve, and controlling valve of voltage regulation and fluidisation regulating valve fill injection tank
Pressure closes pressure stabilizing stop valve when pressure reaches setting value；
Step 3) opens first order pressure regulator valve, second level pressure regulator valve, tonifying Qi pressure regulator valve, tonifying Qi stop valve, connection blowing system
System and powder collecting system；
Step 4) opens defeated powder valve, pressure stabilizing stop valve, and controlling valve of voltage regulation and fluidisation regulating valve are in automatic adjustment state,
Material is in injection tank and receives between powder tank under differential pressure action, enters in receipts powder tank after injection tank ejection by injection pipeline and carries out
Storage；
Step 5) is then switched to next injection tank and starts to be blown after material spray in injection tank is empty；
Step 6) closes its corresponding defeated coal valve, tonifying Qi stop valve, pressure stabilizing stop valve and fluidisation for the empty injection tank of spray
Stop valve opens its decompression control valve and executes pressure discharge operations, when equal with powder pressure inside the tank is received in tank, open dress powder valve and repeats
Dress powder and pressure process are executed, when another injection tank sprays empty, the injection tank for switching to waiting is blown.
The present invention has the advantages that the present invention can be realized the automatic cycles behaviour such as material pressurization, fluidisation, blowing and storage
Make, whole process recycles progress in confined space, effectively improves conventional efficient, reduces experimental cost；The present invention also adopts
Device is removed with whirlwind and bag filter collects dust, filters tail gas non-pollution discharge.
Other advantages, target and feature of the invention will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.Target of the invention and other advantages can be realized by following specification and
It obtains.
Detailed description of the invention
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
The detailed description of one step, in which:
Fig. 1 is the structural diagram of the present invention；
Description of symbols in figure: part 1 is compressor, and part 2 is oil water separator, and part 3 is steam line, and part 4 is air accumulator, part
5 be gas supply main valve, and part 6 is sub-cylinder, and part 7 is pressure stabilizing pipeline, and part 8 is controlling valve of voltage regulation.Part 9 is fluidisation pipeline, and part 10 is stream
Change regulating valve, part 11 is tonifying Qi regulating valve, and part 12 is tonifying Qi pipeline, and part 13, part 13 ' are tonifying Qi stop valve, and part 14, part 14 ' are
Defeated coal valve, part 15 are transparent glass tube, and part 16 is injection pipeline, and part 17 is blowing moving bend head, and part 18 is meausring apparatus, part 19
For check-valves, part 20 is to receive powder tank, and part 21 is first order pressure regulator valve, and part 22 is first order relief tube, and part 23 is cyclone dust collectors,
Part 24 is second level relief tube, and part 25 is second level pressure regulator valve, and part 26 is exhaust pipe, and part 27 is bag filter, and part 28 is the
Two unloading valves, part 29 are the second powder retrieving pipe, and part 30 is the first unloading valve, and part 31 is the first powder retrieving pipe, and part 32,32 ' is pressure release tune
Valve is saved, part 33,33 ' is dress powder valve, and part 34 is back that powder stop valve, part 35, part 35 ' are injection tank, and part 36,36 ' is fluidisation cutting
Valve, part 37,37 ' are pressure stabilizing stop valve.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.It should be noted that diagram provided in following embodiment is only to show
Meaning mode illustrates basic conception of the invention, and in the absence of conflict, the feature in following embodiment and embodiment can phase
Mutually combination.
Embodiment one:
As shown in Figure 1, a kind of balk cargo pneumatic conveying experimental provision, including air supply system, injection system and powder collecting system,
The air supply system is by the sequentially connected compressor 1 of steam line 3, oil water separator 2, air accumulator 4, gas supply main valve 5, sub-cylinder 6
Composition；The injection system is made of injection tank 35, defeated coal valve 14, and pressure stabilizing of the injection tank 35 by pressure stabilizing pipeline 7 and thereon is adjusted
Valve 8 is connected to sub-cylinder 6, and fluidisation regulating valve 10 of the injection tank 35 also by fluidisation pipeline 9 and thereon is connected to sub-cylinder 6, sprays
It blows tank 35 and exports the injection pipeline 16 for being provided with defeated coal valve 14, tonifying Qi tune of the sub-cylinder 6 also by tonifying Qi pipeline 12 and thereon
Section valve 11 is connected to injection pipeline 16；The powder collecting system is by sequentially connected outside the one end of injection pipeline 16 far from injection tank 35
It receives powder tank 20, cyclone dust collectors 23, bag filter 27 to form, receives the dress powder valve 33 of powder tank 20 also by dress powder pipeline and thereon
It is connected to injection tank 35, receives and is additionally provided with decompression control valve 32 between powder tank 20 and injection tank 35, powder tank 20 is received and is let out by the first order
Pressure pipe 22 and first order pressure regulator valve 21 thereon are connected to cyclone dust collectors 23, and cyclone dust collectors 23 pass through second level relief tube
24 and second level pressure regulator valve 25 thereon be connected to bag filter 27；Bag filter 27 also by the first powder retrieving pipe 31 and its
On the first unloading valve 30 be connected to injection tank 35, cyclone dust collectors 23 second unload ash also by the second powder retrieving pipe 29 and thereon
Valve 28, which is connected to, receives powder tank 20.
It is stored specifically, material in bulk is sprayed into receive in powder tank by injection tank by injection pipeline, receives the powder that powder tank is collected
Dirt is fallen into injection tank by filling powder pipeline, forms first circulation access；It receives gas/powder mixture in powder tank and passes through first order pressure release
Pipe enters cyclone dust collectors, enters bag filter by second level relief tube；After bag filter will be filtered by exhaust pipe
Tail gas exhaust；It is controlled by adjusting the valve opening of first order pressure regulator valve, second level pressure regulator valve and receives the maintenance of powder pressure inside the tank
In setting value；The dust that cyclone dust collectors and bag filter are collected passes through the second powder retrieving pipe respectively, the first powder retrieving pipe fills respectively
Enter to receive in powder tank and injection tank, forms second circulation access；By the relief pipeline and decompression control valve being arranged in injection tank,
Uniform pressure release can be realized according to the aperture of blowing pressure inside the tank control decompression control valve；Using the above scheme, the present invention can be real
Existing material pressurization, fluidisation, blowing and collection, whole process recycle progress in confined space, effectively improve conventional efficient,
Reduce experimental cost, while non-pollutant discharge, energy conservation and environmental protection.
Injection tank 35 in the present embodiment is equipped with meausring apparatus 18.So that being entirely blown process, injection tank is using weighing
Device accurately measures blowing amount.
Injection pipeline 16 in the present embodiment uses helix shape arragement construction, which is provided with multiple transparent glass tubes 15
With blowing moving bend head 17, in this way, being dissipated by being equipped with transparent glass tube in injection pipeline, and using high speed video camera observation
The Flow of Goods and Materials state of dress, using blowing moving bend head connection between injection pipeline, injection pipeline is by DN50mm~DN150mm pipeline
Composition, can carry out any combination according to different experiments demand.
Check-valves 19 is being additionally provided with close to the side for receiving powder tank 20 in injection pipeline 16 in the present embodiment.That is injection pipeline
After end setting check-valves prevents jetting pressure too low, material tank switching phenomenon in bulk is generated.
It is additionally provided with tonifying Qi stop valve 13 on tonifying Qi pipeline 12 in the present embodiment, pressure stabilizing cutting is additionally provided on pressure stabilizing pipeline 7
Valve 37 fluidizes and is additionally provided with fluidisation stop valve 36 on pipeline 9, is being additionally provided with back powder close to 35 side of injection tank on the first powder retrieving pipe 31
Stop valve 34 is provided to convenient for handover operation.
The experimental method of this balk cargo pneumatic conveying experimental provision, the specific steps are as follows: firstly, the gas that compressor generates
Entered in air accumulator by steam line by oil water separator and is stored.Material first passage tank car, which is fitted into, to be received in powder tank, when filling powder,
Decompression control valve and dress powder valve are opened, material passes through dress powder pipeline under the effect of gravity and falls into injection tank.Arrangement of powder amount reaches
Decompression control valve and dress powder valve are closed after setting value.Gas supply main valve, controlling valve of voltage regulation, fluidisation regulating valve, fluidisation cutting are opened again
Valve and pressure stabilizing stop valve.High pressure gas by sub-cylinder enter pressure stabilizing pipeline, fluidisation pipeline material in injection tank pressurize/it is steady
Pressure, fluidization operation.When overpressure reaches setting value, pressure stabilizing stop valve is closed, closes controlling valve of voltage regulation, fluidisation regulating valve.
Then, when starting blowing, it is first turned on first order pressure regulator valve and second level pressure regulator valve, secondly tonifying Qi regulating valve is opened and tonifying Qi is cut
Disconnected valve, when due-in powder pressure inside the tank is increased to some setting value, opens defeated coal valve, starts to be blown.Open pressure stabilizing stop valve, fluidisation
Stop valve, controlling valve of voltage regulation, fluidisation regulating valve are in automatic adjustment state.Material is in injection tank and receives differential pressure action between powder tank
Under, enter in receipts powder tank after tank mouth ejection by injection pipeline and is stored.Blowing process is recorded using high speed video camera
The flow regime of balk cargo, using pressure changing in high-precision difference gauge and manometry injection pipeline.It receives in powder tank
Primary mixture enters cyclone dust collectors by first order relief tube, is entered in bag filter by second level relief tube.Cloth
Bag dust collector is exhausted filtered tail gas by exhaust pipe.When material in injection tank empties, defeated coal valve is closed, is delayed one section
Time closes tonifying Qi stop valve.Pressure stabilizing stop valve, fluidisation stop valve are closed, decompression control valve is opened, the pressure release into receipts powder tank,
PLC system realizes uniform pressure release according to the valve opening for receiving powder pressure inside the tank automatic adjustment decompression control valve；When injection tank and receive
When powder pressure inside the tank is equal, pressure release is completed.Dress powder, pressure process are repeated, waiting is blown again with injection tank.Wait test knot
Shu Hou opens the second unloading valve on the second powder retrieving pipe II and is packed into the dust collected in cyclone dust collectors and receive powder tank, opens the
The dust that the first unloading valve and time powder stop valve on one powder retrieving pipe collect bag filter is packed into injection tank, completes dust and follows
Ring is collected.
Embodiment two:
The present embodiment and embodiment one the difference is that the quantity of injection tank is two or more, specifically, with
It is illustrated for two injection tanks (35,35 '), there are two fluidize stop valve for setting corresponding with injection tank quantity accordingly
(36,36 '), two pressure stabilizing stop valves (37,37 '), two dress powder valves (33,33 '), two tonifying Qi stop valves (13,13 '),
Two defeated coal valves (14,14 '), two decompression control valves (32,32 ')；
Charging process: material first passage tank car, which is fitted into, to be received in powder tank, opens letting out for two injection tank (35,35 ') respectively
Regulating valve (32,32 ') and dress powder valve (33,33 ') are pressed, material passes through respective dress powder pipeline under the effect of gravity and respectively falls in two
In a injection tank (35,35 ').Arrangement of powder amount reach decompression control valve (32,32 ') are closed after setting value and fill powder valve (33,
33′)。
Pressurize fluid mapper process: opening gas supply main valve 5, controlling valve of voltage regulation 8, fluidisation 10, first injection tanks of regulating valve respectively
The fluidisation stop valve 36 ' and pressure stabilizing stop valve of 35 fluidisation 37, second injection tanks 35 ' of stop valve 36 and pressure stabilizing stop valve
37′.High pressure gas enters pressure stabilizing pipeline 7 by sub-cylinder 5, fluidisation pipeline 9 adds two interior materials of injection tank (35,35 ')
Pressure/pressure stabilizing, fluidization operation.When pressure inside the tank reaches setting value, the pressure stabilizing stop valve of two injection tanks (35,35 ') is closed
(37,37 ') close controlling valve of voltage regulation 8 and fluidisation regulating valve 10.
Blowing process: the present embodiment selects first injection tank 35 first to spray and (second injection tank 35 ' also may be selected first to spray).
It is first turned on first order pressure regulator valve 21 and second level pressure regulator valve 25, secondly opens tonifying Qi regulating valve 11 and first injection tank 35
Tonifying Qi stop valve 13 open the defeated coal valve of first injection tank 35 when pressure is increased to some setting value in due-in powder tank 20
14, start to be blown.It opens the pressure stabilizing stop valve 37 of first injection tank 35 and fluidizes stop valve 36, and controlling valve of voltage regulation 8, fluidisation
Regulating valve 10 is in automatic adjustment state.Material is in first injection tank 35 and receives between powder tank 20 under differential pressure action, from tank mouth
Enter to receive in powder tank 20 by injection pipeline 16 after ejection and be stored.Blowing process records balk cargo using high speed video camera
Flow regime, using pressure changing in high-precision difference gauge and manometry injection pipeline 16.Receive gas in powder tank 20
Powder mixture enters cyclone dust collectors 23 by first order relief tube 21, enters bag filter 27 by second level relief tube 25
It is interior.Bag filter 27 crosses exhaust pipe 26 and exhausts filtered tail gas.
Change tank process: when material in first injection tank 35 empties, first injection tank 35 and second injection tank 35 '
Tank operation is changed in execution, is opened the tonifying Qi stop valve 13 ' of second injection tank 35 ', is closed the defeated coal valve of second injection tank 35 '
14 ', while the defeated coal valve 14 of first injection tank 35 is opened, delay a period of time closes the tonifying Qi cutting of first injection tank 35
Valve 13.
Pressure leak process: the pressure stabilizing stop valve 37 and fluidisation stop valve 36 of first injection tank 35 are closed, first spray is opened
The decompression control valve 32 for blowing tank 35, to pressure release in powder tank 20 is received, PLC system automatically adjusts pressure release according to pressure in powder tank 20 is received
The valve opening of regulating valve 32 realizes uniform pressure release；When first injection tank 35 is equal with 20 pressure of powder tank is received, pressure release is complete
At.Dress powder, pressure process are repeated, waits and changes tank with second injection tank 35 '.
Cyclic process: after the interior material emptying of second injection tank 35 ', changing tank operation with first execution of injection tank 35,
Then pressure release, dress powder and the waiting operation of first injection tank 35 are repeated.Two injection tanks (35,35 ') during entire blowing
Continuous blowing is realized in mutually switching.
After testing, the powder that the second unloading valve 28 on the second powder retrieving pipe 29 will be collected in cyclone dust collectors 24 is opened
Dirt, which is packed into, receives powder tank 20, opens the first unloading valve 30 on the first powder retrieving pipe 31 and returns powder stop valve 34 for bag filter 27
The dust of collection is packed into first injection tank 35, completes dust circulation and collects.
It is merely a preferred embodiment of the present invention, is not intended to restrict the invention, it is clear that those skilled in the art described in upper
Various changes and modifications can be made to the invention without departing from the spirit and scope of the present invention.If in this way, this of the invention
Within the scope of the claims of the present invention and its equivalent technology, then the present invention is also intended to encompass these and changes a little modifications and variations
Including dynamic and modification.
Claims (10)
1. a kind of balk cargo pneumatic conveying experimental provision characterized by comprising air supply system is successively connected by steam line (3)
Compressor (1), air accumulator (4), gas supply main valve (5), sub-cylinder (6) composition connect；
Injection system is formed by least one injection tank (35), with the comparable defeated coal valve (14) of injection tank quantity, and injection tank passes through
Pressure stabilizing pipeline (7) and controlling valve of voltage regulation (8) thereon be connected to sub-cylinder, and injection tank also passes through fluidisation pipeline (9) and thereon
Fluidisation regulating valve (10) is connected to sub-cylinder, and injection tank exports the injection pipeline (16) for being provided with defeated coal valve；
Powder collecting system, by receipts powder tank (20) sequentially connected outside the one end of injection pipeline far from injection tank, cyclone dust collectors
(23), bag filter (27) forms, and receives that powder tank also passes through dress powder pipeline and dress powder valve (33) thereon is connected to injection tank, receives
Decompression control valve (32) are additionally provided between powder tank and injection tank.
2. balk cargo pneumatic conveying experimental provision according to claim 1, which is characterized in that the pressure in the air supply system
It is additionally provided between contracting machine and air accumulator oil water separator (2), the injection tank is equipped with meausring apparatus (18).
3. balk cargo pneumatic conveying experimental provision according to claim 1, which is characterized in that the injection pipeline uses spiral shell
Spin line arrangements structure which is provided with multiple transparent glass tubes (15) and blowing moving bend head (17), in the injection pipeline
Check-valves (19) are additionally provided with close to the side for receiving powder tank.
4. balk cargo pneumatic conveying experimental provision according to claim 1, which is characterized in that the sub-cylinder also passes through benefit
Feed channel (12) and tonifying Qi regulating valve (11) thereon are connected to injection pipeline, are additionally provided with tonifying Qi stop valve on the tonifying Qi pipeline
(13), the quantity of the tonifying Qi stop valve is suitable with the quantity of injection tank, and each tonifying Qi stop valve corresponds respectively to single spray
Blow the injection pipeline between tank and defeated coal valve.
5. balk cargo pneumatic conveying experimental provision according to claim 1, which is characterized in that also set on the pressure stabilizing pipeline
Have pressure stabilizing stop valve (37), the quantity of the pressure stabilizing stop valve is suitable with the quantity of injection tank, and each pressure stabilizing stop valve and each spray
Tank is blown to respectively correspond.
6. balk cargo pneumatic conveying experimental provision according to claim 1, which is characterized in that also set on the fluidisation pipeline
Have fluidisation stop valve (36), the quantity of the fluidisation stop valve is suitable with the quantity of injection tank, and each fluidisation stop valve and each spray
Tank is blown to respectively correspond.
7. balk cargo pneumatic conveying experimental provision according to claim 1, which is characterized in that the receipts powder tank passes through first
Grade relief tube (22) and first order pressure regulator valve (21) thereon are connected to cyclone dust collectors, and the cyclone dust collectors pass through the second level
Relief tube (24) and second level pressure regulator valve (25) thereon are connected to bag filter.
8. balk cargo pneumatic conveying experimental provision according to claim 1, which is characterized in that the bag filter is also logical
It crosses the first powder retrieving pipe (31) and the first unloading valve (30) thereon is connected to injection tank, the cyclone dust collectors also pass through second time
Tube cell (29) and the second unloading valve (28) thereon, which are connected to, receives powder tank, on first powder retrieving pipe close to injection tank side also
Equipped with time powder stop valve (34).
9. balk cargo pneumatic conveying experimental provision according to claim 1, which is characterized in that on the bag filter also
Equipped with exhaust pipe (26).
10. using the experimental method of the described in any item balk cargo pneumatic conveying experimental provisions of claim 1-9, feature exists
In, comprising:
Step 1), material first passage tank car, which is fitted into, to be received in powder tank, opens decompression control valve and dress powder valve, and material passes through dress tube cell
Road is fallen under gravity into injection tank, when charge reaches setting value, closes dress powder valve and decompression control valve；
Step 2) starts air supply system, opens gas supply main valve, and controlling valve of voltage regulation and fluidisation regulating valve carry out pressurising to injection tank,
When pressure reaches setting value, pressure stabilizing stop valve is closed；
Step 3), open first order pressure regulator valve, second level pressure regulator valve, tonifying Qi pressure regulator valve, tonifying Qi stop valve, connection injection system and
Powder collecting system；
Step 4), opens defeated powder valve, pressure stabilizing stop valve, and controlling valve of voltage regulation and fluidisation regulating valve are in automatic adjustment state, material
It in injection tank and receives between powder tank under differential pressure action, enters to receive in powder tank by injection pipeline after injection tank ejection and be stored up
It deposits；
Step 5) is then switched to next injection tank and starts to be blown after material spray in injection tank is empty；
Step 6) is closed its corresponding defeated coal valve, tonifying Qi stop valve, pressure stabilizing stop valve and fluidisation for the empty injection tank of spray and is cut off
Valve opens its decompression control valve and executes pressure discharge operations, when equal with powder pressure inside the tank is received in tank, open dress powder valve and repeats
Powder and pressure process are filled, when another injection tank sprays empty, the injection tank for switching to waiting is blown.
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| CN110724777A (en) * | 2019-11-18 | 2020-01-24 | 大峘集团有限公司 | Coal powder injection tank pressure relief system and working method thereof |
| CN112173724A (en) * | 2020-09-17 | 2021-01-05 | 宏工科技股份有限公司 | Control system and method for negative pressure conveying system and storage medium |
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| CN103320557A (en) * | 2013-06-26 | 2013-09-25 | 中冶南方工程技术有限公司 | Automatic circulation control method of parallel-pot blast furnace coal injection |
| CN105624351A (en) * | 2016-03-17 | 2016-06-01 | 中冶华天南京工程技术有限公司 | Pulverized coal jetting, pressure releasing and powder returning technology and system |
| CN105775754A (en) * | 2016-04-27 | 2016-07-20 | 北京首钢国际工程技术有限公司 | Injection tank pressure relief device for positive pressure pneumatic conveying |
| CN205652842U (en) * | 2016-04-27 | 2016-10-19 | 北京首钢国际工程技术有限公司 | Malleation air conveying's jetting jar pressure relief device |
| CN209796850U (en) * | 2019-04-16 | 2019-12-17 | 中冶赛迪技术研究中心有限公司 | bulk material pneumatic conveying experimental device |
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| CN110724777A (en) * | 2019-11-18 | 2020-01-24 | 大峘集团有限公司 | Coal powder injection tank pressure relief system and working method thereof |
| CN112173724A (en) * | 2020-09-17 | 2021-01-05 | 宏工科技股份有限公司 | Control system and method for negative pressure conveying system and storage medium |
| CN112173724B (en) * | 2020-09-17 | 2022-04-15 | 宏工科技股份有限公司 | Control system and method for negative pressure conveying system and storage medium |
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