CN106011941B - The on-line monitoring of aluminum electrolysis crane block bin-level and the control method of failure warning system - Google Patents
The on-line monitoring of aluminum electrolysis crane block bin-level and the control method of failure warning system Download PDFInfo
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- CN106011941B CN106011941B CN201610624731.2A CN201610624731A CN106011941B CN 106011941 B CN106011941 B CN 106011941B CN 201610624731 A CN201610624731 A CN 201610624731A CN 106011941 B CN106011941 B CN 106011941B
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/14—Devices for feeding or crust breaking
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Abstract
The invention discloses the on-line monitoring of aluminum electrolysis crane block bin-level and the control method of failure warning system, is related to aluminium electrolytic equipment field, including：Judge feed bin charging and motion state, if without charging behavior and remaining static, MCU module communicates with slot control machine, obtains whether aluminium cell needs the information that feeds intake；If current time needs to feed intake there are aluminium cell, fed intake and calculate rate of feeding；If rate of feeding is normal, feed bin fault-free, if rate of feeding is excessively slow, obstruction or device fails occur for feed bin, open audible-visual annunciator.The present invention utilizes weighing sensor collection feed bin qualitative data, calculate raw material rate of feeding, and then judge whether that discharge port blocks, and carry out sound-light alarm censorship and repair, the present invention with real time on-line monitoring and can control bin-level, feed bin obstruction information is being detected at the first time at the same time, avoids obstruction from deteriorating.Structure of the present invention and operating procedure are simple, easy to implement.
Description
Technical field
The present invention relates to aluminium electrolytic equipment field, more particularly to the on-line monitoring of aluminum electrolysis crane block bin-level and failure report
The control method of alert system.
Background technology
In field of aluminum electrolysis, the addition of aluminium electroloysis raw material is usually that will first expect that the raw material in tower storage tank passes through concentrated phase or super dense
Phase conveyance conduit is delivered in the electrolytic cell of potroom；Due in smelting process, to add anode-covered material, auxiliary material and benefit
Material, which will be by independent concentrated phase or ultra-dense phase pipeline to electrolysis crown block feed bin, then overhead traveling crane be again by mulch
It is added in electrolytic cell.Feed bin generally has inlet port and outlet port, and raw material enters feed bin through feed inlet at pipeline, when feeding intake
When, solenoid valve control discharge port is opened, and raw material is transferred to electrolyzer reaction through discharge port.
The overhead traveling crane tower storage tank that feeds intake and expect directly feeds intake, the two aluminium electroloysis raw material is identical, and raw material mainly includes：Aluminium oxide,
Fluoride salt, chlorate etc., the two main difference part are temperature, and overhead traveling crane feeds intake, and general temperature is relatively low, and feed liquid is easily frozen into
Particle causes discharge port to block, and influences feed bin discharging.
The content of the invention
In view of the drawbacks described above of the prior art, the technical problems to be solved by the invention are to provide aluminum electrolysis crane block feed bin
Material position on-line monitoring and the control method of failure warning system, it is intended to monitor material position state, detection feed bin discharging speed in real time, sentence
Whether disconnected discharging speed meets the requirements, and when feed bin discharge hole blocks, sends sound-light alarm, reminds related personnel's maintenance.This hair
It is bright to block information detecting feed bin at the first time, avoid obstruction from aggravating and cause to be worse off.
To achieve the above object, the present invention provides the on-line monitoring of aluminum electrolysis crane block bin-level and failure warning system
Control method, the overhead traveling crane feed bin failure warning system include：For taking up the feed bin of raw material, the day for moving the feed bin
Car and the electronic control module for feed bin control；
The electronic control module includes：Weighing sensor, motion state sensor, MCU module, solenoid valve；The title
Sensor is retransmitted to be electrically connected with the MCU module；The motion state sensor is electrically connected with the MCU module；The solenoid valve
It is electrically connected with the MCU module；The MCU module is communicated to connect with slot control machine；
The overhead traveling crane is provided with support base, and the weighing sensor is provided with upper padding plate and lower bolster, the weighing and sensing
Device lower bolster is fastened with the support base；The weighing sensor upper padding plate is fastened with the feed bin；The solenoid valve is installed on
The discharge port of the feed bin, for controlling the discharge port to be turned on and off；
Described method includes following steps：
Step 1：Judge feed bin whether charging state, if the feed bin is in charging state, keep the discharge port
The solenoid valve close；If the feed bin is in non-feed state, step 2 is performed；
Step 2：Judge whether feed bin is kept in motion, if the feed bin is kept in motion, keep the discharging
The solenoid valve of mouth is closed, and performs step 3；If the feed bin remains static, step 3 is performed；
Step 3：When the overhead traveling crane feed bin feeds intake, weighing sensor gathers overhead traveling crane feed bin qualitative data in real time, opens institute
The solenoid valve of discharge port is stated, calculates feed rate V, performs step 4；
Step 4：Judge whether rate of feeding V is normal；If rate of feeding is normal, wait, which feeds intake to finish, closes the discharge port
The solenoid valve, perform step 5；Otherwise, the solenoid valve of the discharge port is closed, opens audible-visual annunciator, and it is mobile
The overhead traveling crane；
Step 5：The weighing sensor gathers the feed bin quality in real time, if the feed bin quality is more than or equal to lower limit
Value, then perform step 3；If the feed bin quality is less than lower limit, the feed bin is moved to charging zone and fed by the overhead traveling crane,
Weighing sensor gathers the feed bin quality in real time, if the feed bin quality is more than upper limit value, the overhead traveling crane charging is completed, and
Perform step 3.
In the technical scheme, electronic control module normally starts or starts to perform step 1 after the machine of delaying is restarted, step 1,
2 be mainly detection current device operating status after machine of delaying, and avoids equipment run-time error.In the technical scheme, discharge port is tested
Carried out when whether blocking when feeding intake to electrolytic cell, be on-line testing, without arranging other time or space to discharge
Mouth blocking test experiment.In the technical scheme, feed bin qualitative data is gathered using weighing sensor, calculates acquisition raw material and feed intake
Speed, and then judge whether that discharge port blocks, and carry out sound-light alarm censorship and repair, the program can be detected in first time
Block information to feed bin, avoid obstruction from aggravating and cause to be worse off.
Furthermore, the rate of feeding computational methods are：Obtain nearest n feed bin qualitative data Mi, calculating feeds intake
Speed V, it is described1≤the i≤n, n >=3, the T are described
The sampling period of weighing sensor, the t gather the feed bin qualitative data to current time for the last anti-Magnetic Sensor
Duration.
In the technical scheme, since weighing sensor is to weigh by the cycle to feed bin, obtained by weighing sensor
Qualitative data be compared to feed bin truthful data there are certain delay, MCU module needs to handle qualitative data, and
It is scaled rate of feeding；The calculation formula that feeds intake provided in the technical solution, is change based on rate of feeding within a short period of time
Change and once linear change is presented, and calculate acquisition rate of feeding, improve rate of feeding computational accuracy, it is reliable to improve system
Property.
Furthermore, in steps of 5, when the feed bin quality is lower limit, the surplus of raw material is at least aluminium electricity
Solve groove single inventory.
In the certain intervals time when general aluminium cell feeds intake, feed intake to electrolytic cell, the fluctuation of each inventory is little.
In the technical solution, judge that starting material left amount is less than aluminium cell single inventory, then do not feed intake task simultaneously to the feed bin arrangement
Need to carry out charging processing to the feed bin.
Furthermore, the motion state sensor is gyroscope or accelerometer.In the technical scheme, shape is moved
State mainly judges whether overhead traveling crane remains static, and can carry out judging motion state using respective sensor.
Furthermore, in step 4, judge that the whether normal methods of rate of feeding V are：Set rate of feeding V lower limits
Value VTHIf the rate of feeding V >=VTH, then rate of feeding is normal.
In the technical scheme, setting rate of feeding lower limit carries out judging whether rate of feeding is normal, higher than lower limit
It is judged as that rate of feeding is normal.α is worth determining to be manually set according to actual process, the shape of discharge port.Generally
For, under same parameters, α values set higher, the easier report failure of discharge port, and advantage is to find that failure is more early, and shortcoming exists
In easy wrong report；The setting of α values is lower, and discharge port report fault-tolerance is bigger, it is not easy to reports an error, certain fault discovery is a little later.
Furthermore, the motion state sensor and MCU module are installed on the feed bin or the overhead traveling crane support base
Or on the upper padding plate or lower bolster.
Furthermore, the motion state sensor and MCU module are installed between the upper padding plate and lower bolster.
Weighing sensor need to be installed between overhead traveling crane support base and feed bin, and the installation of motion state sensor, MCU module
Suitable position can independently be selected.In general, motion state sensor installation site need to be consistent with feed bin motion state, such as
On feed bin or overhead traveling crane support base or upper padding plate or lower bolster；In a preferred embodiment, motion state sensor and MCU
Module is installed within upper padding plate and lower bolster, is advantageously implemented electronic control module integrated design, convenient installation.
Furthermore, the overhead traveling crane feed bin failure warning system is also configured with display, the display and the MCU
Module is electrically connected, and the MCU module sends data to the display and shows；The control method further includes the display feed bin
The step of material position；The MCU module receives weighing sensor data, and obtains the bin-level, and the display shows institute
State overhead traveling crane bin-level.
The technical solution realizes real-time display material position, and overhead traveling crane bin-level is intuitively obtained easy to user；Meanwhile in the technology
In scheme, qualitative data is changed into by material position data using weighting manner, avoids the prior art from obtaining material position using level-sensing device
Inaccurately, influence to feed intake and feed.
It is of the invention to gather feed bin qualitative data using weighing sensor, calculate and obtain raw material rate of feeding, and then judgement is
No discharge port blocks, and carries out sound-light alarm censorship and repair, and the program can block information detecting feed bin at the first time,
Obstruction is avoided to aggravate and cause to be worse off.Meanwhile the present invention can avoid operation from missing after equipment delays machine with self-test operating status
Difference；Alarm method provided by the invention is that on-line testing is completed, and improves work efficiency.It is also possible to monitor in real time
Bin-level；Structure of the present invention and operating procedure are simple, easy to implement.
Brief description of the drawings
Fig. 1 is aluminum electrolysis crane block bin-level on-line monitoring of the present invention and failure warning system structure diagram；
Fig. 2 is electronic control module of the present invention and slot control machine communication scheme；
Fig. 3 is electronic control module structure diagram of the present invention；
Fig. 4 is the antimagnetic weighing sensor scheme of installation of the present invention；
Fig. 5 is aluminum electrolysis crane block bin-level on-line monitoring of the present invention and the flow signal of failure warning system control method
Figure；
Fig. 6 is that feed bin of the present invention feeds intake mass-change curve；
Fig. 7 is aluminum electrolysis crane block bin-level real-time display schematic diagram of the present invention.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples：
As shown in Figs. 1-2, in the first embodiment of the invention, overhead traveling crane feed bin failure warning system includes：For taking up original
The feed bin 21 of material, the overhead traveling crane for moving the feed bin and the electronic control module for feed bin control；
The electronic control module includes：Antimagnetic weighing sensor, motion state sensor, MCU module, solenoid valve；Institute
Antimagnetic weighing sensor is stated to be electrically connected with the MCU module；The motion state sensor is electrically connected with the MCU module；Institute
Solenoid valve is stated to be electrically connected with the MCU module；The MCU module is communicated to connect with slot control machine；
The overhead traveling crane is provided with overhead traveling crane hanging ring 11, support base 12, and the antimagnetic weighing sensor 31 is provided with upper padding plate 32
With lower bolster 33, the antimagnetic weighing sensor lower bolster 33 is fastened with the support base 12；On the antimagnetic weighing sensor
Backing plate 32 is fastened with the feed bin 21；The solenoid valve is installed on the discharge port 22 of the feed bin 21, for controlling the discharging
Mouth 22 is turned on and off；21 feed inlet 23 of feed bin is arranged above feed bin.Overhead traveling crane hanging ring 11 drops off storehouse 21 for crown block hook；Underlay
It is provided with through hole among plate 33, the discharge port 22 of feed bin 21 runs through the through hole of lower bolster 33, the advantage is that, material is from discharge port
22 dischargings, are not stopped by lower bolster 33, and discharge port 22 is arranged on centre, and overhead traveling crane feed bin can be kept to balance.
Preferably, in the present embodiment, motion sensor uses accelerometer, and sensor gathers feed bin acceleration information,
Quadrature to acceleration and obtain feed bin velocity information, further quadraturing to speed obtains feed bin positional information.
Preferably, in the present embodiment, the motion state sensor and MCU module are installed on the upper padding plate 32 with
Between backing plate 33.
As shown in figure 3, Fig. 3 is electronic control module block diagram in the present embodiment, antimagnetic weighing sensor is used to gather feed bin
Qualitative data, the millivolt voltage data of antimagnetic weighing sensor measurement feed bin quality pass through amplifier amplification, filters filter, and
Digital signal is changed into by A/D, MCU module obtains the digital information of feed bin quality；Motion state sensor, which is used to gather, expects
Storehouse exercise data is simultaneously sent to MCU module；MCU handles corresponding data, and controls audible-visual annunciator and solenoid valve；
In addition, electronic control module is additionally provided with feed bin quality bound setup module, equipment management personnel is according to actual conditions, to material
Storehouse quality bound is adjusted.
Such as Fig. 4, this gives antimagnetic weighing sensor and upper lower bolster installation diagram, upper padding plate 32, underlay
Plate 33 is fastened by 4 bolts 35 and feed bin and support base respectively；Antimagnetic weighing sensor 31 passes through antimagnetic weighing sensor interface
34 are connected with MCU module.
As shown in figure 5, the on-line monitoring of aluminum electrolysis crane block bin-level and fault alarm are provided in first embodiment of the invention
The control method of system, includes the following steps：
Step 1：Judge feed bin whether charging state, if the feed bin is in charging state, keep the discharge port
The solenoid valve close；If the feed bin is in non-feed state, step 2 is performed；
Step 2：Judge whether feed bin is kept in motion, if the feed bin is kept in motion, keep the discharging
The solenoid valve of mouth is closed, and performs step 3；If the feed bin remains static, step 3 is performed；
Step 3：When the overhead traveling crane feed bin feeds intake, antimagnetic weighing sensor gathers overhead traveling crane feed bin qualitative data in real time, beats
The solenoid valve of the discharge port is opened, calculates feed rate V, performs step 4；
Step 4：Judge whether rate of feeding V is normal；If rate of feeding is normal, the feed bin fault-free, wait feeds intake
The solenoid valve for closing the discharge port is finished, performs step 5；If rate of feeding is excessively slow or without the behavior that feeds intake, the material
Obstruction or device fails occur for storehouse, close the solenoid valve of the discharge port, audible-visual annunciator are opened, by the day
Car is moved to maintenance area；
In the present embodiment, judge that the whether normal methods of rate of feeding V are：Set rate of feeding V lower limits VTHIf institute
State rate of feeding V >=VTH, then rate of feeding is normal；If the rate of feeding V≤VTH, then rate of feeding is excessively slow；The VTHFor institute
State the history average V of rate of feedingzcα times, the history average of 0.05≤α≤0.9, wherein rate of feeding is MCU
Module passes through the historical data statistics acquisition to rate of feeding, in the present embodiment, VTH=7.2kg/min.In another implementation
In example, the VTHFor setting value, the 1kg/min≤VTH≤500kg/min。
Step 5：The antimagnetic weighing sensor gathers the feed bin quality in real time, if under the feed bin quality is more than or equal to
Limit value, then perform step 3；If the feed bin quality is less than lower limit, the feed bin is moved to charging zone and added by the overhead traveling crane
Material, antimagnetic weighing sensor gather the feed bin quality in real time, if the feed bin quality is more than upper limit value, the overhead traveling crane charging
Complete, and perform step 3.
In the present embodiment, the rate of feeding computational methods are：Obtain nearest n feed bin qualitative data Mi, calculate and throw
Expect speed V, it is described1≤the i≤n, n >=3, the T are institute
State the sampling period of antimagnetic weighing sensor, the t gathers the feed bin qualitative data to ought for the last anti-Magnetic Sensor
The duration at preceding moment.
Feed intake mass-change curve as shown in fig. 6, Fig. 6 is feed bin, in the present embodiment, extraction feed bin quality three times recently
Data mn、mn-1、mn-2, the average speed V of the adjacent quality of feed bin twice is calculated respectively1、V2Respectively as section [mn-1, mn-2]、
[mn、mn-1] midpoint velocity amplitude, represented in figure 6 with slope；Wherein,
Since rate of feeding V is the derived function of feed bin Mass versus Time, it is assumed that feed bin quality is quadratic function, then feed intake speed
It is then linear function to spend V, and rate of feeding linearly changes；Current rate of feeding and V can be obtained1、V2Relation：
As available from the above equation：
In the present embodiment, when the feed bin quality is lower limit, the surplus of raw material is at least aluminium cell single
Inventory.
Aluminum electrolysis crane block bin-level on-line monitoring provided by the invention and the control method of failure warning system, move shape
State sensor and MCU module may be mounted on the feed bin or the overhead traveling crane support base or the upper padding plate or lower bolster.
In one embodiment of the invention, motion state sensor and MCU module are installed on feed bin.In an alternative embodiment of the invention, transport
Dynamic state sensor and MCU module are installed on overhead traveling crane support base.In an alternative embodiment of the invention, motion state sensor and
MCU module is installed on upper padding plate.In an alternative embodiment of the invention, motion state sensor and MCU module are installed on underlay
On plate.
Aluminum electrolysis crane block bin-level on-line monitoring provided by the invention and the control method of failure warning system, move shape
State sensor can be gyroscope or accelerometer.In an embodiment of the present invention, motion state sensor is gyroscope.
In the present embodiment, the overhead traveling crane feed bin failure warning system is also configured with display, the display with it is described
MCU module is electrically connected, and the MCU module sends data to the display and shows；The control method is further included described in display
The step of bin-level；The MCU module receives weighing sensor data, and obtains the bin-level, and the display is shown
Show the overhead traveling crane bin-level.
In actual production, aluminium electroloysis raw material is the co-melting state of solid-liquid in overhead traveling crane feed bin, and material flow is poor, using material position
It is often inaccurate that meter is detected bin-level, obtains raw material weight using antimagnetic weighing sensor in this embodiment, and according to
Quality, density and volume relationship, obtain raw material volume, and then are scaled material position.It can be adopted it is noted that material position is shown
Directly displayed with data, curve represents or block diagram is shown；As shown in fig. 7, display real-time detecting material in the form of block diagram
Storehouse material position simultaneously shows current material position.
In addition, in the present embodiment, further include and obtain whether aluminium cell needs overhead traveling crane feed bin material addition step, the MCU
Module communicates with slot control machine, obtains whether aluminium cell needs the information that feeds intake, if current time need not feed intake, remains stationary.
If current time needs to feed intake there are aluminium cell, the material charging region that overhead traveling crane is moved to the electrolytic cell feeds intake.
Solute concentration in electrolytic cell is measured it is noted that the prior art generally uses, and passes through slot control machine
Inventory and charging time interval are carried out every sky.In the present embodiment, aluminium electrolytic tank control machine communicates with electronic control module
Connection, slot control machine notice electronic control module opens solenoid valve, and sends inventory information.In addition, slot control machine also with overhead traveling crane
PLC control system communicates, when some electrolytic cell needs to feed intake, slot control machine notice overhead traveling crane PLC control system, and overhead traveling crane PLC controls
Overhead traveling crane and feed bin are moved to corresponding electrolytic cell region and fed intake by system.
Preferred embodiment of the invention described in detail above.It should be appreciated that those of ordinary skill in the art without
Need creative work to conceive according to the present invention and make many modifications and variations.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical solution, all should be in the protection domain being defined in the patent claims.
Claims (7)
1. the on-line monitoring of aluminum electrolysis crane block bin-level and the control method of failure warning system, it is characterised in that based on overhead traveling crane
Feed bin failure warning system carries out the on-line monitoring of aluminum electrolysis crane block bin-level and fault alarm；The overhead traveling crane feed bin fault alarm
System includes：For taking up the feed bin of raw material, the overhead traveling crane for moving the feed bin and the electronic control for feed bin control
Module；
The electronic control module includes：Weighing sensor, motion state sensor, MCU module, solenoid valve；The biography of weighing
Sensor is electrically connected with the MCU module；The motion state sensor is electrically connected with the MCU module；The solenoid valve and institute
State MCU module electrical connection；The MCU module is communicated to connect with slot control machine；
The overhead traveling crane is provided with support base, and the weighing sensor is provided with upper padding plate and lower bolster, under the weighing sensor
Backing plate is fastened with the support base；The weighing sensor upper padding plate is fastened with the feed bin；The solenoid valve is installed on described
The discharge port of feed bin, for controlling the discharge port to be turned on and off；
Described method includes following steps：
Step 1：Judge feed bin whether charging state, if the feed bin is in charging state, keep the institute of the discharge port
State solenoid valve closing；If the feed bin is in non-feed state, step 2 is performed；
Step 2：Judge whether feed bin is kept in motion, if the feed bin is kept in motion, keep the discharge port
The solenoid valve is closed, and performs step 3；If the feed bin remains static, step 3 is performed；
Step 3：When the overhead traveling crane feed bin feeds intake, weighing sensor gathers overhead traveling crane feed bin qualitative data in real time, goes out described in opening
The solenoid valve of material mouth, calculates feed rate V, performs step 4；
Step 4：Judge whether rate of feeding V is normal；If rate of feeding is normal, the institute for feeding intake and finishing and closing the discharge port is waited
Solenoid valve is stated, performs step 5；Otherwise, the solenoid valve of the discharge port is closed, opens audible-visual annunciator, and described in movement
Overhead traveling crane；
Step 5：The weighing sensor gathers the feed bin quality in real time, if the feed bin quality is more than or equal to lower limit,
Perform step 3；If the feed bin quality is less than lower limit, the feed bin is moved to charging zone and fed, weighed by the overhead traveling crane
Sensor gathers the feed bin quality in real time, if the feed bin quality is more than upper limit value, the overhead traveling crane charging is completed, and is performed
Step 3；
The rate of feeding computational methods are：Obtain nearest n feed bin qualitative data mi, rate of feeding V is calculated, it is described1≤the i≤n, n >=3, the T are the weighing sensor
Sampling period, the t is that the last anti-Magnetic Sensor gathers the feed bin qualitative data to the duration at current time.
2. aluminum electrolysis crane block bin-level on-line monitoring as claimed in claim 1 and the control method of failure warning system, its
It is characterized in that：In steps of 5, when the feed bin quality is lower limit, the surplus of raw material is at least the throwing of aluminium cell single
Doses.
3. aluminum electrolysis crane block bin-level on-line monitoring as claimed in claim 1 and the control method of failure warning system, its
It is characterized in that：The motion state sensor is gyroscope or accelerometer.
4. aluminum electrolysis crane block bin-level on-line monitoring as claimed in claim 1 and the control method of failure warning system, its
It is characterized in that, in step 4, judges that the whether normal methods of rate of feeding V are：Set rate of feeding V lower limits VTHIt is if described
Rate of feeding V >=VTH, then rate of feeding is normal.
5. aluminum electrolysis crane block bin-level on-line monitoring as claimed in claim 1 and the control method of failure warning system, its
It is characterized in that, the motion state sensor and MCU module are installed on the feed bin or the overhead traveling crane support base or the upper pad
On plate or lower bolster.
6. aluminum electrolysis crane block bin-level on-line monitoring as claimed in claim 1 and the control method of failure warning system, its
It is characterized in that, the motion state sensor and MCU module are installed between the upper padding plate and lower bolster.
7. aluminum electrolysis crane block bin-level on-line monitoring as claimed in claim 1 and the control method of failure warning system, its
It is characterized in that：The overhead traveling crane feed bin failure warning system is also configured with display, and the display is electrically connected with the MCU module
Connect, the MCU module sends data to the display and shows；The control method further includes the step for showing the bin-level
Suddenly；
The MCU module receives weighing sensor data, and obtains the bin-level, and the display shows the overhead traveling crane material
Storehouse material position.
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| CN108106700A (en) * | 2017-12-07 | 2018-06-01 | 山信软件股份有限公司 | A kind of control method and system of scale hooper blowing |
| CN111736543A (en) * | 2020-05-15 | 2020-10-02 | 湖南华菱涟源钢铁有限公司 | Overhead crane scheduling method, overhead crane management device and terminal equipment |
| CN114131838A (en) * | 2021-10-29 | 2022-03-04 | 芜湖远景塑胶制品有限公司 | Maintenance-free automatic feeding system |
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| FR2836133B1 (en) * | 2002-02-18 | 2004-06-04 | Brochot Sa | METHOD FOR DOSING AND DISPENSING A POWDERY AGENT |
| CN101805913B (en) * | 2009-02-16 | 2014-01-29 | 贵阳铝镁设计研究院有限公司 | Automatic feeding method and device for multifunctional electrolytic machine set |
| CN201358135Y (en) * | 2009-02-16 | 2009-12-09 | 贵阳铝镁设计研究院 | Electrolysis multifunctional machine set automatic feeding device |
| CN101575718B (en) * | 2009-06-01 | 2011-12-14 | 中国铝业股份有限公司 | Automatic charging control method of aluminum electrolysis multifunctional machine unit stock bin |
| CN201962386U (en) * | 2010-12-31 | 2011-09-07 | 青海西部矿业科技有限公司 | Real-time discharge monitoring system for aluminium electrolytic tank |
| CN102965692B (en) * | 2012-11-16 | 2015-04-29 | 中国铝业股份有限公司 | Automatic material blending control device for aluminum electrolytic bath |
| CN204982079U (en) * | 2015-09-25 | 2016-01-20 | 青海百河铝业有限责任公司 | Aluminium electroloysis feeding system charge level indicator |
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