CN102219120A - Pipeline blowing-aided anti-explosion pneumatic transmission system - Google Patents
Pipeline blowing-aided anti-explosion pneumatic transmission system Download PDFInfo
- Publication number
- CN102219120A CN102219120A CN2011101602048A CN201110160204A CN102219120A CN 102219120 A CN102219120 A CN 102219120A CN 2011101602048 A CN2011101602048 A CN 2011101602048A CN 201110160204 A CN201110160204 A CN 201110160204A CN 102219120 A CN102219120 A CN 102219120A
- Authority
- CN
- China
- Prior art keywords
- pipeline
- plc
- valve
- storehouse
- explosion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Pipeline Systems (AREA)
Abstract
The invention discloses a pipeline blowing-aided anti-explosion pneumatic transmission system, which comprises a distributed control system (DCS), two programmable logic controllers (PLC) and a pipeline meter transmission system, wherein the pipeline meter transmission system and the PLC are connected with the distributed control system (DCS); the distributed control system (DCS) is communicated with the PLC by MODBUS; the two PLCs are communicated by IM365; and a safety barrier for processing external signals is arranged between the PLCs and the pipeline meter transmission system. By the pipeline blowing-aided anti-explosion pneumatic transmission system, the blanking capacity and transmission capacity of warehouse pumps are improved, the smooth blanking of the warehouse pumps is ensured, and a ratio of materials to air, the transmission flow rate and transmission quantity can be controlled by adjusting the pressure of transmission airflow.
Description
Technical field
The present invention relates to a kind of feedway, the explosion-proof air-transport system of specifically a kind of pipeline blow-supporting type.
Background technology
Along with development and national economy, the problem of " the electric power energy consumption height " of restriction air-transport system is resolved, strength carry industries such as chemical industry, grain, food in obtained rapid application, substituted the mode of a dead lift and mechanical handing material substantially.Compared to artificial and mechanical handing mode, air-transport system is that the granule solid material is carried only load transfer device continuously, equally also is suitable for discontinuously a large amount of granule materials being delivered to bunker from tank car, rolling stock and freighter.Conveying machinery such as belt conveyer, conveyor screw comes down to carry towards a direction, and air-transport system can make progress, downwards or around building, big equipment and other obstacle convey materials, its delivery pipe can exceed or avoid other devices or the shared space of equipment.
The blanking of general run of thins blanking bin is to adopt automatic gravity blanking, and the blanking of storehouse pump is to adopt the pressure that fluidisation is finished in the pump of storehouse to carry out blanking, and this just causes the blanking of storehouse pump and transport efficiency to reduce greatly.At present what adopt is to adjust the speed that relation between delivery pressure and the storehouse pump pressure is controlled blanking more, but the predetermined effect of out of reach often, difficult control, the pressure of storehouse pump be determine according to the fluidization characteristic of material, be constant.The blanking of storehouse pump and delivery speed are controlled by stream pressure and the flow velocity carried, if delivery pressure is crossed and lowly will be caused solid accumulation to result in blockage near the pump feed opening of storehouse and also can cause wearing and tearing to pipeline.Will cause the air-flow of conveying to scurry if delivery pressure is too high, can increase the pressure of storehouse pump and arrange not discharging because the storehouse pump discharge pressure is excessive toward storehouse pump the inside.
The operation of various solid material transmission pumps, flow distributor and receiver that air-transport system adopted is very similar to the operation of fluid device, and therefore most of strengths relation of carrying is easy to realize automatic guidance, by a central control board operation.Compare with the load transfer device of other divided solid materials, what it caught fire and exploded is dangerous little, and has eliminated the pollution to environment.When negative pressure transportation, any one escape of air all is inside, so the pollution of material just can be restricted to minimum.Can realize by the concentrated place that is sent to of several points, or by the diffusing distant place of being sent to several points of a punishment.For the unsettled material of chemical nature, can adopt unreactable gas to carry, be beneficial to safety in production, improve the workshop hygiene condition, prevent that the outer of dust, dust from raising, help environmental protection.
Summary of the invention
The purpose of this invention is to provide the explosion-proof air-transport system of a kind of pipeline blow-supporting type, this system has improved storehouse pump blanking and traffic capacity, the blanking that can guarantee the storehouse pump is smooth and easy, and can control material-gas ratio and carry flow velocity and operational throughput by the pressure of adjusting delivery air.
The objective of the invention is to be achieved through the following technical solutions:
The explosion-proof air-transport system of a kind of pipeline blow-supporting type is characterized in that: this system comprises upper computer DCS, two PLC and pipeline instrument delivery system, and pipeline instrument delivery system all is connected with upper computer DCS with PLC; Adopt the MODBUS communication modes between upper computer DCS and the PLC, carry out communication by IM365 between two PLC; Between PLC and pipeline instrument delivery system, be provided with the guard grating that outward sign is handled.
In order to improve storehouse pump blanking and traffic capacity, the storehouse pump feed opening of the present invention in pipeline instrument delivery system is provided with to help toward the direction that receives the storehouse and blows ring, blow ring causes one back suction to the storehouse pumping hole air-flow by helping, attract the blanking of air-flow assurance storehouse pump smooth and easy by this strand, as long as pass through to adjust the pressure of delivery air with regard to may command material-gas ratio and conveying flow velocity and operational throughput.
Among the present invention, described upper computer DCS monitor force is also controlled two PLC work, selects pipeline and receives the storehouse.Described guard grating is limited in the voltage and current signal in the system in the safety anti-explosive value.
System works principle of the present invention:
Native system is made up of upper computer DCS, PLC, pipeline instrument transport subsystem.The MODBUS communication modes is adopted in upper computer DCS monitor force, control PLC work and selection pipeline and reception storehouse between upper computer DCS and the PLC, PLC selects Siemens 300, and CPU is 315-2DP.System has two frames, carry out communication by MPI IM365 between the frame, PLC carries out charging fluidisation transportation work by the guard grating by-pass valve control, because total system is to be in the explosion-proof interval, so all outward signs all will carry out signal conditioning by guard grating, guard grating is limited in the voltage and current signal in the system in the safety anti-explosive value.All valves all will have the switch signal that puts in place in the whole flow process pipeline, and the switch signal that puts in place need feed back among the PLC and carries out.
Among the present invention, the feed opening of feed bin through pneumatic cutter type valve and rotary feeder, drops to Weighing module, when reaching setting weight, opens pneumatic cutter type valve and dome valve and enters the storehouse pump, and the storehouse pump is transported to by fluidisation and enters each reception storehouse in the pipeline then.
The present invention controls the operated pneumatic valve at scene by CPU315-2DP PLC, and to the equipment such as the compression indicator at scene, pressure transformer, liquid level switch, fluid level transmitter, the switch of flow transmitter signal and the valve signal collection that puts in place is carried out decision operation according to system's current state then, and according to the signal that transfinites of feedback report to the police, stop, operation such as unimpeded.This system is shared to two PLC frames, receives sending module by IM365 between two frames and carries out MPI communication connection.For guaranteeing field control safety, PLC carries out charging fluidisation transportation work by the guard grating by-pass valve control, because total system is to be in the explosion-proof interval, so all outward signs all will carry out signal conditioning by guard grating, guard grating is limited in the voltage and current signal in the system in the safety anti-explosive value.Upper computer DCS monitor force thing position, control PLC work and selection pipeline and reception storehouse adopt MODBUS to carry out communication between upper computer DCS and the PLC.
The present invention has improved storehouse pump blanking and traffic capacity, add that toward the direction that receives the storehouse one is helped and blows ring and carry out pipeline and help and blow at distance storehouse pump feed opening, blow ring causes one back suction to the storehouse pumping hole air-flow by helping, attract the blanking of air-flow assurance storehouse pump smooth and easy by this strand, as long as pass through to adjust the pressure of delivery air with regard to may command material-gas ratio and conveying flow velocity and operational throughput.
Description of drawings
Fig. 1 is a system architecture functional block diagram of the present invention.
The specific embodiment
The explosion-proof air-transport system of a kind of pipeline blow-supporting type of the present invention is seen Fig. 1, and this system comprises upper computer DCS, two PLC and pipeline instrument delivery system, and pipeline instrument delivery system all is connected with upper computer DCS with PLC; Adopt the MODBUS communication modes between upper computer DCS and the PLC, carry out communication by IM365 between two PLC; Between PLC and pipeline instrument delivery system, be provided with the guard grating that outward sign is handled.Upper computer DCS monitor force is also controlled two PLC work, selects pipeline and receives the storehouse.Guard grating is limited in the voltage and current signal in the system in the safety anti-explosive value.
In order to improve storehouse pump blanking and traffic capacity, the storehouse pump feed opening of the present invention in pipeline instrument delivery system is provided with to help toward the direction that receives the storehouse and blows ring, blow ring causes one back suction to the storehouse pumping hole air-flow by helping, attract the blanking of air-flow assurance storehouse pump smooth and easy by this strand, as long as pass through to adjust the pressure of delivery air with regard to may command material-gas ratio and conveying flow velocity and operational throughput.
The conveying flow process is as follows:
Open operational process
Will determine before system's operation that at first the valve instrument pipeline does not have any problem in the test run of band material, the nitrogen pressure of instrument air and nitrogen accumulator tank all reaches standard value, could carry out commencement of commercial operation then.Open all valves and equipment earlier,, drain the air in the pipeline, treat to close all valves after the interior air of pipeline drains then with the purging of nitrogen to total system.By the nitrogen accumulator tank material in the tank car is transported to feed bin, in the process of carrying, the dust exhaustor on the feed bin to be opened, discharge the nitrogen in the feed bin, by the continuous material level meter at feed bin top and the material level in the level-sensing device monitoring feed bin, if the hypertonia in course of conveying in the feed bin can trigger the safety valve on the feed bin, safety valve is opened and is discharged unnecessary pressure.The push-pull valve of opening then under the feed bin carries out the gravity automatic blanking, open pneumatic stopping valve then and select the pipeline that to work, open rotary feeder behind the signal and by gravity material is transported in the Weighing module material is weighed when receiving reaching of shutoff valve, after reaching the standard that sets, the material in the Weighing module closes pneumatic stopping valve, after the pass that receives pneumatic stopping valve puts feedback signal in place, close rotary feeder.After receiving the feedback signal that rotary feeder closes, open push-pull valve under the hopper of weighing by the gravity automatic blanking, open shutoff valve again, reaching of shutoff valve opened dome valve after the feedback signal and blow off valve carries out gravity blanking to the storehouse pump when receiving, after triggering level transducer, the material in the feed bin closes shutoff valve, after putting signal in place, the pass that receives shutoff valve closes dome valve and blow off valve, after the pass that receives dome valve and blow off valve puts signal in place, open hand valve on the fluidisation pipeline and the material in the pump of fluidisation valve valve storehouse then and carry out fluidization treatment, hand valve and the transfer valve opened after the pressure transformer on the pump of storehouse reaches setting pressure in the fluidization treatment on the diffuser expect that gas mixes conveying, open then and help the hand valve that blows on the valve pipeline to blow valve, and the hand valve of opening on the pipeline blows valve with helping with helping.Wherein pump line line in storehouse can switch conveying by hand valve.Select needed reception storehouse by the picture on the DCS interlocking then.
The system closing process
At first stop the charging of tank car, close dust exhaustor and induced draft fan on the feed bin then after a while feed bin.Close the push-pull valve under the feed bin then, then close pneumatic stopping valve and feeder in order.Close push-pull valve, pneumatic stopping valve and pneumatic dome valve under the Weighing module then, close again to help and blow valve, transfer valve and fluidisation valve, and close simultaneously help blow, the hand valve on conveying and the fluidisation pipeline.The manual selector valve of the pipeline of shut-down circuit then.Then close helping on the diffuser and blow valve and manual ball valve.Close the charging pneumatic ball valve that receives the storehouse then, close helping on the reception storehouse again and blow valve and hand valve.Wait the pressure that receives in the storehouse to reach normal pressure at last and no longer close pneumatic ball valve dust exhaustor under after the charging, then close the other induced draft fan of dust exhaustor, close dust exhaustor again behind the wait 10S.Total system is closed end.
Storehouse pump blanking is carried
The pressure of storehouse pump and arrange not discharging because the storehouse pump discharge pressure is excessive.Solution: add that toward the direction that receives the storehouse one is helped and blows ring (FOV201) and draw one air-flow and carry out pipeline and help and blow at distance storehouse pump feed opening, by helping this strand gas that blows ring the storehouse pumping hole to be caused the air-flow of one back suction, attract the blanking of air-flow assurance storehouse pump smooth and easy by this strand, as long as pass through to adjust the pressure of delivery air with regard to may command material-gas ratio and conveying flow velocity and operational throughput.
The block clearing process
Ease off the pressure when opening the block clearing valve during hypertonia in the pipeline of system.Report to the police when the anti-blocking high pressure of pipeline, just should carry out manual unimpeded.Manual unimpeded method: turn-off the pipeline transfer valve earlier and help and blow valve and stop, opening the block clearing valve then and discharge the pressure of plugging circuit and can back suction go out a part of material to pipeline convey materials and nitrogen.And then turn-off the block clearing valve and open to help and blow valve supplying nitrogen in pipeline and increase line pressure, if still plugging is just then turn-offed to help and is blown valve and open unimpeded valve downstream line pressure and back suction material.As above process is by manually continuously several times just can unimpeded.
The PLC control principle
This system selects Siemens S7-300PLC for use, by CPU315-2DP PLC the operated pneumatic valve at scene is controlled, and to the equipment such as the compression indicator at scene, pressure transformer, liquid level switch, fluid level transmitter, the switch of flow transmitter signal and the valve signal collection that puts in place, judge according to system's current state then and carry out next step operation, and according to the signal that transfinites of feedback report to the police, stop, operation such as unimpeded.This system is shared to two PLC frames, receives sending module by IM365 between two frames and carries out MPI communication connection.The selection in DCS control diffuser and reception storehouse and monitor force etc., PLC and DCS are by the total wire joint of MODBUS.For guaranteeing field control safety, PLC carries out charging fluidisation transportation work by the guard grating by-pass valve control, because total system is to be in the explosion-proof interval, so all outward signs all will carry out signal conditioning by guard grating, guard grating is limited in the voltage and current signal in the system in the safety anti-explosive value.All valves all will have the switch signal that puts in place in the whole flow process pipeline, and the switch signal that puts in place need feed back among the PLC and carries out.
The present invention controls the operated pneumatic valve at scene by CPU315-2DP PLC, and to the equipment such as the compression indicator at scene, pressure transformer, liquid level switch, fluid level transmitter, the switch of flow transmitter signal and the valve signal collection that puts in place is judged according to system's current state then and is carried out next step operation, and according to the signal that transfinites of feedback report to the police, stop, operation such as unimpeded.For guaranteeing field control safety, PLC carries out charging fluidisation transportation work by the guard grating by-pass valve control, because total system is to be in the explosion-proof interval, so all outward signs all will carry out signal conditioning by guard grating, guard grating is limited in the voltage and current signal in the system in the safety anti-explosive value.All valves all will have the switch signal that puts in place in the whole flow process pipeline, and the switch signal that puts in place need feed back among the PLC and carries out.
Claims (4)
1. explosion-proof air-transport system of pipeline blow-supporting type is characterized in that: this system comprises upper computer DCS, two PLC and pipeline instrument delivery system, and pipeline instrument delivery system all is connected with upper computer DCS with PLC; Adopt the MODBUS communication modes between upper computer DCS and the PLC, carry out communication by IM365 between two PLC; Between PLC and pipeline instrument delivery system, be provided with the guard grating that outward sign is handled.
2. the explosion-proof air-transport system of pipeline blow-supporting type according to claim 1 is characterized in that: the storehouse pump feed opening in pipeline instrument delivery system is provided with to help toward the direction that receives the storehouse and blows ring.
3. the explosion-proof air-transport system of pipeline blow-supporting type according to claim 1 is characterized in that: described upper computer DCS monitor force is also controlled two PLC work, selects pipeline and receives the storehouse.
4. the explosion-proof air-transport system of pipeline blow-supporting type according to claim 1, it is characterized in that: described guard grating is limited in the voltage and current signal in the system in the safety anti-explosive value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101602048A CN102219120A (en) | 2011-06-15 | 2011-06-15 | Pipeline blowing-aided anti-explosion pneumatic transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101602048A CN102219120A (en) | 2011-06-15 | 2011-06-15 | Pipeline blowing-aided anti-explosion pneumatic transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102219120A true CN102219120A (en) | 2011-10-19 |
Family
ID=44775880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101602048A Pending CN102219120A (en) | 2011-06-15 | 2011-06-15 | Pipeline blowing-aided anti-explosion pneumatic transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102219120A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104297435A (en) * | 2014-10-29 | 2015-01-21 | 安徽淮化股份有限公司 | On-line detection system for preparing ethylene glycol with synthetic gas in industrial production |
| CN104512731A (en) * | 2013-09-30 | 2015-04-15 | 宁夏嘉翔自控技术有限公司 | Electrical automatic control system for pneumatic flour transmitting system |
| CN104512730A (en) * | 2013-09-30 | 2015-04-15 | 宁夏嘉翔自控技术有限公司 | Electric automatic control system of boiler dust removal pneumatic transmission system |
| CN104555456A (en) * | 2013-10-20 | 2015-04-29 | 宁夏嘉翔自控技术有限公司 | Automatic electrical control system of pneumatic wheat conveying system |
| CN104555455A (en) * | 2013-10-20 | 2015-04-29 | 宁夏嘉翔自控技术有限公司 | Electric automatic control system of double-bunker pneumatic conveying system for limestone powder |
| CN107063332A (en) * | 2017-01-11 | 2017-08-18 | 许修义 | A kind of automatic detection conveys the device of blockage |
| CN107892182A (en) * | 2017-12-27 | 2018-04-10 | 新乡市高服机械股份有限公司 | Granular material malleation conveys online weighing device |
| CN112299014A (en) * | 2019-08-01 | 2021-02-02 | 南京艾尔康威物料输送系统有限公司 | Control device for concentrated phase closed circulation nitrogen gas conveying |
| CN114035517A (en) * | 2021-10-21 | 2022-02-11 | 中石化宁波工程有限公司 | Control system and method for conveying materials by multiple bin pumps |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08257964A (en) * | 1995-03-28 | 1996-10-08 | Amada Co Ltd | Work absorbtion device |
| CN101332400A (en) * | 2008-07-18 | 2008-12-31 | 朱学智 | Method for spraying calcium and devulcanizing in circulating fluid-bed boiler using PLC control system |
| CN201367257Y (en) * | 2008-11-05 | 2009-12-23 | 岫岩满族自治县顺达气力输送设备制造厂 | Long-distance dense phase pneumatic conveying device with assisted blower |
| CN201477428U (en) * | 2009-08-07 | 2010-05-19 | 中铁四局集团机电设备安装有限公司 | Automatic control system of universal stirring pumping perfusion vehicle for high and low elasticity module cement emulsified asphalt sand pulp |
| CN202098860U (en) * | 2011-06-15 | 2012-01-04 | 南京工业职业技术学院 | Pipeline-aided blowing-type explosion-proof pneumatic conveying system |
-
2011
- 2011-06-15 CN CN2011101602048A patent/CN102219120A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08257964A (en) * | 1995-03-28 | 1996-10-08 | Amada Co Ltd | Work absorbtion device |
| CN101332400A (en) * | 2008-07-18 | 2008-12-31 | 朱学智 | Method for spraying calcium and devulcanizing in circulating fluid-bed boiler using PLC control system |
| CN201367257Y (en) * | 2008-11-05 | 2009-12-23 | 岫岩满族自治县顺达气力输送设备制造厂 | Long-distance dense phase pneumatic conveying device with assisted blower |
| CN201477428U (en) * | 2009-08-07 | 2010-05-19 | 中铁四局集团机电设备安装有限公司 | Automatic control system of universal stirring pumping perfusion vehicle for high and low elasticity module cement emulsified asphalt sand pulp |
| CN202098860U (en) * | 2011-06-15 | 2012-01-04 | 南京工业职业技术学院 | Pipeline-aided blowing-type explosion-proof pneumatic conveying system |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104512731A (en) * | 2013-09-30 | 2015-04-15 | 宁夏嘉翔自控技术有限公司 | Electrical automatic control system for pneumatic flour transmitting system |
| CN104512730A (en) * | 2013-09-30 | 2015-04-15 | 宁夏嘉翔自控技术有限公司 | Electric automatic control system of boiler dust removal pneumatic transmission system |
| CN104555456A (en) * | 2013-10-20 | 2015-04-29 | 宁夏嘉翔自控技术有限公司 | Automatic electrical control system of pneumatic wheat conveying system |
| CN104555455A (en) * | 2013-10-20 | 2015-04-29 | 宁夏嘉翔自控技术有限公司 | Electric automatic control system of double-bunker pneumatic conveying system for limestone powder |
| CN104297435A (en) * | 2014-10-29 | 2015-01-21 | 安徽淮化股份有限公司 | On-line detection system for preparing ethylene glycol with synthetic gas in industrial production |
| CN104297435B (en) * | 2014-10-29 | 2016-06-08 | 安徽淮化股份有限公司 | The industrial production on-line detecting system of a kind of synthetic gas preparing ethylene glycol |
| CN107063332A (en) * | 2017-01-11 | 2017-08-18 | 许修义 | A kind of automatic detection conveys the device of blockage |
| CN107063332B (en) * | 2017-01-11 | 2022-10-21 | 深圳市施威德自动化科技有限公司 | Device for automatically detecting blockage of conveying pipe |
| CN107892182A (en) * | 2017-12-27 | 2018-04-10 | 新乡市高服机械股份有限公司 | Granular material malleation conveys online weighing device |
| CN112299014A (en) * | 2019-08-01 | 2021-02-02 | 南京艾尔康威物料输送系统有限公司 | Control device for concentrated phase closed circulation nitrogen gas conveying |
| CN114035517A (en) * | 2021-10-21 | 2022-02-11 | 中石化宁波工程有限公司 | Control system and method for conveying materials by multiple bin pumps |
| CN114035517B (en) * | 2021-10-21 | 2024-09-10 | 中石化宁波工程有限公司 | Control system and method for conveying materials by multiple bin pumps |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102219120A (en) | Pipeline blowing-aided anti-explosion pneumatic transmission system | |
| CN208512754U (en) | Carry the intelligent environment protection process units for preparing powder of long-range monitoring function | |
| CN102756920A (en) | Continuous dense-phase positive-pressure pneumatic conveying apparatus and conveying method | |
| CN214827291U (en) | Dry powder mortar malleation pneumatic conveying system | |
| CN201520548U (en) | Pneumatic pressure delivering device capable of automatic weighing | |
| CN105621103A (en) | Positive-pressure conveying system device | |
| CN205651516U (en) | Dry powder mortar automated production manufacturing equipment | |
| CN102001529A (en) | Electrical hydraulic combined discharging device | |
| CN202098860U (en) | Pipeline-aided blowing-type explosion-proof pneumatic conveying system | |
| CN207390481U (en) | The grey transport system of purification | |
| CN205132548U (en) | System for PVC mixtures automated production | |
| CN206050978U (en) | A kind of balance force feed feeding device | |
| CN103057935A (en) | Material balance feeding mechanism of belt conveyor | |
| CN106829483A (en) | A kind of flyash gas delivery system | |
| CN104874502B (en) | A kind of feeder apparatus for realizing the control of pulvis automatic ration | |
| CN218490667U (en) | Dust removal feeding device | |
| CN209080971U (en) | A kind of gas, which is unloaded, conveys the powder easing gear combined with pipe chain | |
| CN104071575A (en) | Loading system and loading method | |
| CN110583505A (en) | Automatic control system for feeding in pneumatic conveying mode | |
| CN110155533A (en) | A kind of multistage feeder equipment for conveying granular material | |
| CN203392428U (en) | Material balanced feeding mechanism for belt conveyor | |
| CN206691990U (en) | A kind of flyash gas delivery system | |
| CN205708944U (en) | Automatic feeding system | |
| CN210708124U (en) | Intelligent feeding equipment of activated carbon packaging machine | |
| CN112744595A (en) | Limestone conveying device and method for desulfurization of incinerator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111019 |