CN105022418B - Stablize the method for negative-pressure pneumatic transmission system air flow rate by automatic flow rate adjusting device - Google Patents
Stablize the method for negative-pressure pneumatic transmission system air flow rate by automatic flow rate adjusting device Download PDFInfo
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Abstract
A method of stablizing negative-pressure pneumatic transmission system air flow rate by automatic flow rate adjusting device, an automatic flow rate adjusting device is respectively mounted on every branch flow pipeline of negative-pressure pneumatic transmission system, when the air flow rate in branch flow pipeline changes, regulate and control the air flow rate in branch flow pipeline by automatic flow rate adjusting device to be allowed to constantly in stable Optimization Work state, the air flow rate of negative-pressure pneumatic transmission system total pipeline is set to reach the steady state value of optimization in turn, reach the intermittence reduced to greatest extent because of the working equipment course of work, the purpose of air flow rate fluctuation in negative-pressure pneumatic transmission system caused by random fluctuation and hesitation.
Description
Technical field
The present invention relates to Pneumatic Conveying Technology field, in particular to one kind stablizes negative pressure by automatic flow rate adjusting device
The method of air-transport system air flow rate.
Background technique
Currently, pneumatic conveying and the relevant technologies be widely used in building materials, chemical industry, grain, metallurgy, mining, environmental protection, light industry,
The departments such as the energy, to various part ends shape, graininess, threadiness and foliated material, adopt more and more widely in operation
With the mode of pneumatic conveying.
Negative-pressure pneumatic transmission system has the advantages of with low investment, flexible arrangement, high reliablity, management convenient for safeguarding.It is existing
Negative-pressure pneumatic transmission system pipeline is as shown in Fig. 4, including total pipeline 1 and complex root branch flow pipeline 2, branch flow pipeline
2 one end is connect with total pipeline 1, and the other end is connect with working equipment (such as cigarette machine).When in access negative-pressure pneumatic transmission system
All working equipment all in normal work, air flow rate in total pipeline 1 is the air-flow stream in all branch flow pipelines 2
The sum of amount.
Due in access negative-pressure pneumatic transmission system each working equipment intermittence during the work time, random variation and
The reasons such as hesitation, such as one or several working equipments shutdown, will lead to air flow rate in total pipeline 1 and change,
And then influence air flow rate in other branch flow pipelines 2 and change, so that system is extremely difficult to Optimization Work state, even
Generate surge and can not steady operation, largely affect product quality.
Accordingly it is desirable to using a kind of practical reliable, easy for installation, low-cost automatic flow rate adjusting device come real
When observing and controlling branch flow pipeline 2 in air flow rate, so that the air flow rate moment in branch flow pipeline 2 is in stable optimization
Working condition, and then the air flow rate of negative-pressure pneumatic transmission system total pipeline 1 is made to reach the steady state value of optimization, it eliminates because work is set
Air flow rate in branch flow pipeline 2 caused by the reasons such as the intermittence of the standby course of work, random variation and hesitation is different
Ordinary wave is dynamic.
Summary of the invention
The purpose of the present invention is overcome the above-mentioned insufficient of the prior art and provide it is a kind of by automatic flow rate adjusting device come
Stablize the method for negative-pressure pneumatic transmission system air flow rate.
The technical scheme is that a kind of stablize negative-pressure pneumatic transmission system air-flow by automatic flow rate adjusting device
The method of flow is respectively mounted an automatic flow rate adjusting device on every branch flow pipeline of negative-pressure pneumatic transmission system,
When the air flow rate in branch flow pipeline changes, regulated and controled in branch flow pipeline by automatic flow rate adjusting device
Air flow rate be allowed to constantly in stable Optimization Work state, and then make the air-flow stream of negative-pressure pneumatic transmission system total pipeline
Amount reaches the steady state value of optimization, reaches and reduces the intermittence because of the working equipment course of work, random fluctuation and interim to greatest extent
The purpose of air flow rate fluctuation in negative-pressure pneumatic transmission system caused by shutting down.
Concrete methods of realizing is as follows:
It A, is standard working air current flow CQ the standard air-flow flow set provided in access working equipment technical parameter,
It will be stored in control computer unit in standard working air current flow CQ value feeding automatic flow rate adjusting device；
B, it is Q2 by the air flow rate in the air flow manifold in automatic flow rate adjusting device when working equipment work, passes through
The tonifying Qi air flow rate in tonifying Qi manifold in automatic flow rate adjusting device is Q3, passes through the air flow rate in branch flow pipeline
For Q1, Q1=Q2+Q3；
C, when working equipment works, branch flow pipe when the air flow meter in automatic flow rate adjusting device measures work
Air flow rate Q1 in road, and send control computer unit to be AD converted into numerical data Q1 simulation value, then control is counted
Calculation machine unit, which makes comparisons air flow rate Q1 value with the standard working air current flow CQ value stored in advance, operation and to be judged；
D, when air flow rate Q1 value > standard working air current flow CQ value, then judge air flow rate when working equipment work
Q2 increases, and the automatically controlled adjusting air valve at this moment controlled in computer unit control automatic flow rate adjusting device reduces tonifying Qi air flow rate
Q3 makes air flow rate Q1 value=standard working air current flow CQ value；
E, when air flow rate Q1 value < standard working air current flow CQ value, then judge air flow rate when working equipment work
Q2 is reduced, and the automatically controlled adjusting air valve at this moment controlled in computer unit control automatic flow rate adjusting device increases tonifying Qi air flow rate
Q3 makes air flow rate Q1 value=standard working air current flow CQ value；
When automatic flow rate adjusting device works, speed is controlled to adjust, i.e. air flow meter starts to measure computer unit
Control automatic flow rate adjusting device in automatically controlled adjusting air valve adjust finish restart again measurement time cycle less than 1 second,
To eliminate the system surge that the pneumatic conveying resistance as caused by working equipment shutdown suddenly during the work time increases and generates.
The workflow for controlling computer unit is as follows:
S101, negative-pressure pneumatic transmission system booting, control computer unit built-in computer initialization；
Air flow rate Q1 in S102, air flow meter measurement branches airflow line；
S103, air flow rate Q1 simulation value send control computer unit to be AD converted；
Air flow rate Q1 value is made ratio with the standard working air current flow CQ value stored in advance by S104, control computer unit
Compared with operation and judge；
S105, when air flow rate Q1 value=standard working air current flow CQ value, then return to S102；
S106, when air flow rate Q1 value > standard working air current flow CQ value, then judge air-flow when working equipment work
Flow Q2 increases, and controls automatically controlled adjusting air valve and reduces tonifying Qi air flow rate Q3, until air flow rate Q1 value=standard working air current stream
S102 is returned after amount CQ value；
S107, when air flow rate Q1 value < standard working air current flow CQ value, then judge air-flow when working equipment work
Flow Q2 is reduced, and is controlled automatically controlled adjusting air valve and is increased tonifying Qi air flow rate Q3, until air flow rate Q1 value=standard working air current stream
S102 is returned after amount CQ value；
S108, S102~S107 step is repeated, until negative-pressure pneumatic transmission system is shut down.
The automatic flow rate adjusting device that the above method uses includes air flow meter, airflow rectifier, air flow manifold, tonifying Qi
Manifold, automatically controlled adjusting air valve, computer mounting bracket, control computer unit, air flow damper and silencer.
One end of air flow meter connect by flange with airflow rectifier, the other end of airflow rectifier pass through flange and
Air flow manifold connection, one end of tonifying Qi manifold is welded on the tube wall of air flow manifold, the other end of tonifying Qi manifold by flange with
The other end of the connection of automatically controlled adjusting air valve, automatically controlled adjusting air valve is connect by flange with air flow damper, air flow damper it is another
One end is connect by flange with silencer, and the other end of silencer is communicated with atmosphere, and computer mounting bracket is welded on air-flow resistance
On Buddhist nun's device, control computer unit is mounted in computer mounting bracket.
A further technical solution of the present invention is: standard working air current flow CQ value is determined by surveying, it is specific to grasp
It is as follows to make process:
When the working equipment of branch flow pipelines all in negative-pressure pneumatic transmission system connection works normally, certainly by flow
Automatically controlled adjusting air valve in dynamic regulating device is closed, and obtains branch by the air flow meter measurement in automatic flow rate adjusting device
Air flow rate Q1 in airflow line, and flow is sent into certainly for the air flow rate Q1 value of actual measurement as standard working air current flow CQ value
Storage in control computer unit in dynamic regulating device.
Compared with the prior art, the invention has the following features:
1, it is respectively mounted automatic flow rate adjusting device on each lateral of negative-pressure pneumatic transmission system total pipeline, makes general pipeline
Air flow rate and pressure moment in road are in stable Optimization Work state.
2, by measuring the air flow rate of each lateral of negative-pressure pneumatic transmission system total pipeline, respective branch pipe is controlled
Automatically controlled adjusting air valve in road increases or reduces the aperture of air valve, increases or decreases flow of air supply to stablize in each lateral
Air flow rate is greatly reduced because of work so that the air flow rate of negative-pressure pneumatic transmission system total pipeline reaches the steady state value of optimization
Air flow rate in negative-pressure pneumatic transmission system caused by the intermittence of the equipment course of work, random variation and hesitation etc. is different
Ordinary wave is dynamic.
3, can effectively eliminate as working equipment during the work time suddenly shut down caused by pneumatic conveying resistance increase and
The system surge of generation.
Detailed construction of the invention is further described below in conjunction with the drawings and specific embodiments.
Detailed description of the invention
Attached drawing 1 is automatic flow rate adjusting device structural schematic diagram provided by the invention；
Attached drawing 2 is automatic flow rate adjusting device usage state diagram provided by the invention；
Attached drawing 3 is the workflow for controlling computer unit；
Attached drawing 4 is existing negative-pressure pneumatic transmission system piping schematic.
Specific embodiment
Embodiment one, a kind of side for stablizing negative-pressure pneumatic transmission system air flow rate by automatic flow rate adjusting device
Method is respectively mounted an automatic flow rate adjusting device 3 on every branch flow pipeline 2 of negative-pressure pneumatic transmission system, works as branch
When air flow rate in airflow line 2 changes, regulated and controled in branch flow pipeline 2 by automatic flow rate adjusting device 3
Air flow rate is allowed to constantly in stable Optimization Work state, and then makes the air-flow stream of negative-pressure pneumatic transmission system total pipeline 1
Amount reaches the steady state value of optimization, reaches and reduces the intermittence because of the working equipment course of work, random fluctuation and interim to greatest extent
The purpose of air flow rate fluctuation in negative-pressure pneumatic transmission system caused by shutting down.
Concrete methods of realizing is as follows:
It A, is standard working air current flow CQ the standard air-flow flow set provided in access working equipment technical parameter,
It will be stored in control computer unit 3-7 in standard working air current flow CQ value feeding automatic flow rate adjusting device 3；
It B, is Q2 by the air flow rate in the air flow manifold 3-3 in automatic flow rate adjusting device 3 when working equipment work,
It is Q3 by the tonifying Qi air flow rate in the tonifying Qi manifold 3-4 in automatic flow rate adjusting device 3, by branch flow pipeline 2
Air flow rate be Q1, Q1=Q2+Q3；
C, when working equipment works, branch's gas when the air flow meter 3-1 in automatic flow rate adjusting device 3 measures work
Air flow rate Q1 in flow tube road 2, and send control computer unit 3-7 to be AD converted into numerical data Q1 simulation value, so
Air flow rate Q1 value is made comparisons operation simultaneously with the standard working air current flow CQ value stored in advance by control computer unit 3-7 afterwards
Judgement；
D, when air flow rate Q1 value > standard working air current flow CQ value, then judge air flow rate when working equipment work
Q2 increases, and the automatically controlled adjusting air valve 3-5 at this moment controlled in computer unit 3-7 control automatic flow rate adjusting device 3 reduces tonifying Qi
Air flow rate Q3 makes air flow rate Q1 value=standard working air current flow CQ value；
E, when air flow rate Q1 value < standard working air current flow CQ value, then judge air flow rate when working equipment work
Q2 is reduced, and the automatically controlled adjusting air valve 3-5 at this moment controlled in computer unit 3-7 control automatic flow rate adjusting device 3 increases tonifying Qi
Air flow rate Q3 makes air flow rate Q1 value=standard working air current flow CQ value；
When automatic flow rate adjusting device 3 works, speed is controlled to adjust, i.e. air flow meter 3-1 starts to measure computer
Automatically controlled adjusting air valve 3-5 in unit 3-7 control automatic flow rate adjusting device 3, which is adjusted, finishes week time for restarting measurement again
Phase less than 1 second, is generated with eliminating the pneumatic conveying resistance increase as caused by working equipment shutdown suddenly during the work time
System surge.
The workflow for controlling computer unit 3-7 is as follows:
S101, negative-pressure pneumatic transmission system booting, control computer unit 3-7 built-in computer initialization；
Air flow rate Q1 in S102, air flow meter 3-1 measurement branches airflow line 2；
S103, air flow rate Q1 simulation value send control computer unit 3-7 to be AD converted；
The standard working air current flow CQ value that S104, control computer unit 3-7 are stored by air flow rate Q1 value and in advance
It makes comparisons and operation and judges；
S105, when air flow rate Q1 value=standard working air current flow CQ value, then return to S102；
S106, when air flow rate Q1 value > standard working air current flow CQ value, then judge air-flow when working equipment work
Flow Q2 increases, and controls automatically controlled adjusting air valve 3-5 and reduces tonifying Qi air flow rate Q3, until air flow rate Q1 value=standard work gas
S102 is returned after stream flow CQ value；
S107, when air flow rate Q1 value < standard working air current flow CQ value, then judge air-flow when working equipment work
Flow Q2 is reduced, and is controlled automatically controlled adjusting air valve 3-5 and is increased tonifying Qi air flow rate Q3, until air flow rate Q1 value=standard work gas
S102 is returned after stream flow CQ value；
S108, S102~S107 step is repeated, until negative-pressure pneumatic transmission system is shut down.
The automatic flow rate adjusting device that the above method uses includes air flow meter 3-1, airflow rectifier 3-2, air-flow discrimination
Pipe 3-3, tonifying Qi manifold 3-4, automatically controlled adjusting air valve 3-5, computer mounting bracket 3-6, control computer unit 3-7, air-flow resistance
Buddhist nun's device 3-8 and silencer 3-9.
One end of air flow meter 3-1 is connect by flange with airflow rectifier 3-2, the other end of airflow rectifier 3-2
It is connect by flange with air flow manifold 3-3, one end of tonifying Qi manifold 3-4 is welded on the tube wall of air flow manifold 3-3, tonifying Qi manifold
The other end of 3-4 is connect by flange with automatically controlled adjusting air valve 3-5, and the other end of automatically controlled adjusting air valve 3-5 passes through flange and gas
The other end of damper 3-8 connection, air flow damper 3-8 is connect by flange with silencer 3-9, and silencer 3-9's is another
End is communicated with atmosphere, and computer mounting bracket 3-6 is welded on air flow damper 3-8, and control computer unit 3-7 is mounted on meter
On calculation machine mounting bracket 3-6.
Embodiment two, a kind of side for stablizing negative-pressure pneumatic transmission system air flow rate by automatic flow rate adjusting device
Method is respectively mounted an automatic flow rate adjusting device on every branch flow pipeline 2 of negative-pressure pneumatic transmission system, when branch's gas
When air flow rate in flow tube road 2 changes, the gas in branch flow pipeline 2 is regulated and controled by automatic flow rate adjusting device 3
Stream flow is allowed to constantly in stable Optimization Work state, and then makes the air flow rate of negative-pressure pneumatic transmission system total pipeline 1
The steady state value for reaching optimization has reached and has reduced the intermittence because of the working equipment course of work, random fluctuation and interim to greatest extent
The purpose of air flow rate fluctuation in negative-pressure pneumatic transmission system caused by shutting down.
Concrete methods of realizing is as follows:
A, it when the working equipment of branch flow pipelines 2 all in negative-pressure pneumatic transmission system connection works normally, will flow
The automatically controlled adjusting air valve 3-5 measured in self-checking device 3 is closed, and passes through the air flow meter 3-1 in automatic flow rate adjusting device 3
Measurement obtains air flow rate Q1 in branch flow pipeline 2, and using the air flow rate Q1 value of actual measurement as standard working air current flow
CQ value is sent into storage in the control computer unit 3-7 in automatic flow rate adjusting device 3；
It B, is Q2 by the air flow rate in the air flow manifold 3-3 in automatic flow rate adjusting device 3 when working equipment work,
It is Q3 by the tonifying Qi air flow rate in the tonifying Qi manifold 3-4 in automatic flow rate adjusting device 3, by branch flow pipeline 2
Air flow rate be Q1, Q1=Q2+Q3；
C, when working equipment works, branch's gas when the air flow meter 3-1 in automatic flow rate adjusting device 3 measures work
Air flow rate Q1 in flow tube road 2, and send control computer unit 3-7 to be AD converted into numerical data Q1 simulation value, so
Air flow rate Q1 value is made comparisons operation simultaneously with the standard working air current flow CQ value stored in advance by control computer unit 3-7 afterwards
Judgement；
D, when air flow rate Q1 value > standard working air current flow CQ value, then judge air flow rate when working equipment work
Q2 increases, and the automatically controlled adjusting air valve 3-5 at this moment controlled in computer unit 3-7 control automatic flow rate adjusting device 3 reduces tonifying Qi
Air flow rate Q3 makes air flow rate Q1 value=standard working air current flow CQ value；
E, when air flow rate Q1 value < standard working air current flow CQ value, then judge air flow rate when working equipment work
Q2 is reduced, and the automatically controlled adjusting air valve 3-5 at this moment controlled in computer unit 3-7 control automatic flow rate adjusting device 3 increases tonifying Qi
Air flow rate Q3 makes air flow rate Q1 value=standard working air current flow CQ value；
When automatic flow rate adjusting device 3 works, speed is controlled to adjust, i.e. air flow meter 3-1 starts to measure computer
Automatically controlled adjusting air valve 3-5 in unit 3-7 control automatic flow rate adjusting device 3, which is adjusted, finishes week time for restarting measurement again
Phase less than 1 second, is generated with eliminating the pneumatic conveying resistance increase as caused by working equipment shutdown suddenly during the work time
System surge.
The workflow for controlling computer unit 3-7 is as follows:
S101, negative-pressure pneumatic transmission system booting, control computer unit 3-7 built-in computer initialization；
Air flow rate Q1 in S102, air flow meter 3-1 measurement branches airflow line 2；
S103, air flow rate Q1 simulation value send control computer unit 3-7 to be AD converted；
The standard working air current flow CQ value that S104, control computer unit 3-7 are stored by air flow rate Q1 value and in advance
It makes comparisons and operation and judges；
S105, when air flow rate Q1 value=standard working air current flow CQ value, then return to S102；
S106, when air flow rate Q1 value > standard working air current flow CQ value, then judge air-flow when working equipment work
Flow Q2 increases, and controls automatically controlled adjusting air valve 3-5 and reduces tonifying Qi air flow rate Q3, until air flow rate Q1 value=standard work gas
S102 is returned after stream flow CQ value；
S107, when air flow rate Q1 value < standard working air current flow CQ value, then judge air-flow when working equipment work
Flow Q2 is reduced, and is controlled automatically controlled adjusting air valve 3-5 and is increased tonifying Qi air flow rate Q3, until air flow rate Q1 value=standard work gas
S102 is returned after stream flow CQ value；
S108, S102~S107 step is repeated, until negative-pressure pneumatic transmission system is shut down.
The automatic flow rate adjusting device that the above method uses includes air flow meter 3-1, airflow rectifier 3-2, air-flow discrimination
Pipe 3-3, tonifying Qi manifold 3-4, automatically controlled adjusting air valve 3-5, computer mounting bracket 3-6, control computer unit 3-7, air-flow resistance
Buddhist nun's device 3-8 and silencer 3-9.
One end of air flow meter 3-1 is connect by flange with airflow rectifier 3-2, the other end of airflow rectifier 3-2
It is connect by flange with air flow manifold 3-3, one end of tonifying Qi manifold 3-4 is welded on the tube wall of air flow manifold 3-3, tonifying Qi manifold
The other end of 3-4 is connect by flange with automatically controlled adjusting air valve 3-5, and the other end of automatically controlled adjusting air valve 3-5 passes through flange and gas
The other end of damper 3-8 connection, air flow damper 3-8 is connect by flange with silencer 3-9, and silencer 3-9's is another
End is communicated with atmosphere, and computer mounting bracket 3-6 is welded on air flow damper 3-8, and control computer unit 3-7 is mounted on meter
On calculation machine mounting bracket 3-6.
Claims (2)
1. a kind of method for stablizing negative-pressure pneumatic transmission system air flow rate by automatic flow rate adjusting device, it is characterized in that:
It is respectively mounted an automatic flow rate adjusting device on every branch flow pipeline of negative-pressure pneumatic transmission system, when branch flow pipe
When air flow rate in road changes, the air flow rate regulated and controled in branch flow pipeline by automatic flow rate adjusting device makes
Moment be in stable Optimization Work state, and then the air flow rate of negative-pressure pneumatic transmission system total pipeline is made to reach optimization
Steady state value reaches and bears caused by reducing the intermittence because of the working equipment course of work, random fluctuation and hesitation to greatest extent
Press the purpose of the air flow rate fluctuation in air-transport system；
Concrete methods of realizing is as follows:
A, it is standard working air current flow CQ the standard air-flow flow set provided in access working equipment technical parameter, will marks
Quasi- working air current flow CQ value is sent into storage in the control computer unit in automatic flow rate adjusting device；
B, it is Q2 by the air flow rate in the air flow manifold in automatic flow rate adjusting device when working equipment work, passes through flow
The tonifying Qi air flow rate in tonifying Qi manifold in self-checking device is Q3, is by the air flow rate in branch flow pipeline
Q1, Q1=Q2+Q3；
C, when working equipment works, when the air flow meter in automatic flow rate adjusting device measures work in branch flow pipeline
Air flow rate Q1, and send control computer unit to be AD converted into numerical data Q1 simulation value, then control computer
Unit, which makes comparisons air flow rate Q1 value with the standard working air current flow CQ value stored in advance, operation and to be judged；
D, when air flow rate Q1 value > standard working air current flow CQ value, then judge that air flow rate Q2 when working equipment work increases
Adding, the automatically controlled adjusting air valve at this moment controlled in computer unit control automatic flow rate adjusting device reduces tonifying Qi air flow rate Q3,
Make air flow rate Q1 value=standard working air current flow CQ value；
E, when air flow rate Q1 value < standard working air current flow CQ value, then judge that air flow rate Q2 when working equipment work subtracts
Few, the automatically controlled adjusting air valve at this moment controlled in computer unit control automatic flow rate adjusting device increases tonifying Qi air flow rate Q3,
Make air flow rate Q1 value=standard working air current flow CQ value；
When automatic flow rate adjusting device works, speed is controlled to adjust, i.e. air flow meter starts to measure computer unit control
Automatically controlled adjusting air valve in automatic flow rate adjusting device, which is adjusted, finishes the time cycle for restarting measurement again less than 1 second, to disappear
Pneumatic conveying resistance caused by except being shut down suddenly during the work time as working equipment increases and the system surge of generation；
The automatic flow rate adjusting device that the above method uses includes air flow meter, airflow rectifier, air flow manifold, tonifying Qi discrimination
Pipe, automatically controlled adjusting air valve, computer mounting bracket, control computer unit, air flow damper and silencer；
One end of air flow meter is connect by flange with airflow rectifier, and the other end of airflow rectifier passes through flange and air-flow
Manifold connection, one end of tonifying Qi manifold is welded on the tube wall of air flow manifold, the other end of tonifying Qi manifold by flange with it is automatically controlled
The other end of adjusting air valve connection, automatically controlled adjusting air valve is connect by flange with air flow damper, the other end of air flow damper
It is connect by flange with silencer, the other end of silencer is communicated with atmosphere, and computer mounting bracket is welded on air flow damper
On, control computer unit is mounted in computer mounting bracket.
2. one kind as described in claim 1 stablizes negative-pressure pneumatic transmission system air flow rate by automatic flow rate adjusting device
Method, it is characterized in that: determining standard working air current flow CQ value by surveying, the specific operation process is as follows:
When the working equipment of branch flow pipelines all in negative-pressure pneumatic transmission system connection works normally, flow is adjusted automatically
Automatically controlled adjusting air valve in regulating device is closed, and obtains branch flow by the air flow meter measurement in automatic flow rate adjusting device
Air flow rate Q1 in pipeline, and the air flow rate Q1 value of actual measurement is sent into flow as standard working air current flow CQ value and is adjusted automatically
Storage in control computer unit in regulating device.
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| CN118623225A (en) * | 2024-08-12 | 2024-09-10 | 凯晟动力技术（嘉兴）有限公司 | Sensor-based flow control system |
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| CN103759546A (en) * | 2014-01-21 | 2014-04-30 | 新疆中泰矿冶有限公司 | Calcium carbide furnace purification ash back-to-furnace combustion system |
| CN204110931U (en) * | 2014-08-20 | 2015-01-21 | 新特能源股份有限公司 | A kind of Cemented filling flow-aiding device and pipeline pneumatic conveying system |
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| CN108013503A (en) * | 2017-12-05 | 2018-05-11 | 南华大学 | Gas pulses absorption plant |
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