CN107344138B - A kind of ore mill control method and device - Google Patents
A kind of ore mill control method and device Download PDFInfo
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- CN107344138B CN107344138B CN201610293039.6A CN201610293039A CN107344138B CN 107344138 B CN107344138 B CN 107344138B CN 201610293039 A CN201610293039 A CN 201610293039A CN 107344138 B CN107344138 B CN 107344138B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
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Abstract
The embodiment of the invention provides a kind of ore mill control method and device, and wherein method includes: to obtain ore mill current power R；Determine current power R and Rmid‑ΔRAnd Rmid+ΔRSize relation, wherein RmidFor the median of ore mill power reasonable interval, ΔRFor with RmidCentered on permission undulate quantity, Rmid=Rmax‑ΔR, RmaxFor ore mill power max-thresholds；As R < Rmid‑ΔRWhen, increase ore mill inlet amount；As R > Rmid+ΔRWhen, reduce ore mill inlet amount；Work as Rmid‑ΔR=< R and R <=Rmid+ΔRWhen, according to the variation tendency and preset strategy of ore mill power, finely tune ore mill inlet amount.The present invention monitors this important parameter of the power of ore mill in real time, coarse adjustment or fine tuning are carried out by the load (inlet amount) to ore mill, ore mill is set to work under the optimal condition always, neither underrun wastes electric energy, also excess load does not lead to swollen tripe, and production process can be with the continuous service of stability and high efficiency.
Description
Technical field
The present invention relates to metallurgical technology more particularly to a kind of ore mill control method and device.
Background technique
Processing to ore is usually the basis of metallurgical industry.It is most in addition to a small number of rich ores rich in valuable mineral
Ore belongs to the lean ore containing a large amount of gangues.These lean ores are since useful component content is low, and mineral composition is complicated, if being used directly to
It smelts and extracts metal, then energy consumption is high, high production cost, therefore ore must carry out ore dressing processing before smelting, to abandon absolutely
Most of gangue makes the content of valuable mineral reach the requirement of smelting.And the process of ore dressing mainly includes breaking to raw ore ore
Broken screening grind grading, sorts, the links such as essence mine dehydration, and grinding operation is the key that one of offer sorts raw material work among these
Sequence.
The ore of broken mistake is mainly crushed to suitable granularity by grinding process, and the mineral that crushed are supplied to choosing
Other process.Whether production, which can go on smoothly, is not only related to the control of grinding process, whether grinding efficiency is higher, and directly
Influence the quality index of ore milling product.After material enters ore mill (can also abbreviation grinding machine), when inventory (or perhaps is located
Reason amount, inlet amount) it is lesser when, ore mill is constantly in underrun, and inefficiency wastes electric energy, increases into
This；And when inventory is excessive, due to ore mill overload, processing capacity is limited, by appearance " rise tripe " phenomenon (i.e. material
All it is deposited in ore grinding machine drum body, can not excretes), to influence to produce, also need to shut down cleaning under serious conditions.
Inventor has found in the implementation of the present invention, in the prior art, to the judgement of ore mill load/treating capacity
Substantially the experience of operating staff is leaned on, however due to artificially judging to make a response in time in the presence of very big error, it can not be pre-
Sentence, thus it is more passive to the control of ore mill load, it sometimes even will appear and come not when discovery ore mill rises by tripe
And it handles and leads to the consequence stopped work that stops production.There has been no a kind of preferable methods can more accurately control mill in the prior art
Mine machine treating capacity makes ore mill neither underrun waste electric energy, also not overload operation.
Summary of the invention
To overcome problems of the prior art, the present invention provides a kind of ore mill control method and device, realization pair
Ore mill load accurately controls.
According to a first aspect of the embodiments of the present invention, a kind of ore mill control method is provided, which comprises
Obtain ore mill current power R；
Determine current power R and Rmid-ΔRAnd Rmid+ΔRSize relation, wherein RmidFor ore mill power reasonable interval
Median, ΔRFor with RmidCentered on permission undulate quantity, Rmid=Rmax-ΔR, RmaxFor ore mill power max-thresholds；
As R < Rmid-ΔRWhen, increase ore mill inlet amount；
As R > Rmid+ΔRWhen, reduce ore mill inlet amount；
Work as Rmid-ΔR=< R and R <=Rmid+ΔRWhen, according to the variation tendency and preset strategy of ore mill power, fine tuning
Ore mill inlet amount；
Wherein, the variation tendency is to become by the ore mill changed power in the first specified duration of terminal of current time
Gesture.
Optionally, according to the variation tendency and preset strategy of ore mill power, ore mill inlet amount is finely tuned, comprising:
If ore mill power keeps ascendant trend, then according to power up speeds phase in the described first specified duration
Ore mill inlet amount should be reduced；
If ore mill power keeps downward trend, then according to power decrease speed phase in the described first specified duration
Ore mill inlet amount should be increased；
If ore mill power has liter to have drop in the described first specified duration, then ore mill inlet amount is not adjusted
It is whole.
Optionally, in the following way to keep ascendant trend, keep downward trend, have rise there is drop to judge:
It calculatesWithWherein,For ore mill power in current period
Mean value,For ore mill power mean value in a upper period,It is for ore mill power mean value, current period in phase week before last
From current time-T to the period of current time, a upper period be from current time -2T to the period of current time-T, on
The upper period is from current time -3T to the period of current time -2T, and T is the length in each period, the first specified duration
Including the current period, a upper period and phase week before last；
If RΔ-last> 0 and RΔ-now> 0 then judges that ore mill power keeps ascendant trend；
If RΔ-last< 0 and RΔ-now< 0 then judges that ore mill power keeps downward trend；
If RΔ-last> 0 and RΔ-now< 0, alternatively, RΔ-last< 0 and RΔ-now> 0 then judges that ore mill power has liter to have
Drop.
Optionally, ore mill inlet amount is accordingly reduced according to power up speeds, comprising:
As (RΔ-last+RΔ-now)/2 >=Rmax*PR3When, then enable Hset=Hcur+Hmax*(-PH3)；
As (RΔ-last+RΔ-now)/2 >=Rmax*PR2And (RΔ-last+RΔ-nowThe < R of)/2max*PR3When, then enable Hset=Hcur+
Hmax*(-PH2)；
As (RΔ-last+RΔ-now)/2 >=Rmax*PR1And (RΔ-last+RΔ-nowThe < R of)/2max*PR2When, then enable Hset=Hcur+
Hmax*(-PH1)；
As (RΔ-last+RΔ-nowThe < R of)/2max*PR1When, then do not adjust Hset；
Wherein, HsetMine frequency setting value, H are given for vibrofeedercurGive mine frequency current measured value for vibrofeeder,
HmaxMine maximum frequency, P are given for vibrofeederR3、PR2、PR1、PH3、PH2、PH1It is preset percentage, and PR3、PR2、PR1According to
Secondary reduction, PH3、PH2、PH1It is sequentially reduced.
Optionally, ore mill inlet amount is increase accordingly according to power decrease speed, comprising:
As (RΔ-last+RΔ-now)/2 <=Rmax*(-PR3) when, then enable Hset=Hcur+Hmax*PH3；
As (RΔ-last+RΔ-nowThe > R of)/2max*(-PR3) and (RΔ-last+RΔ-now)/2 <=Rmax*(-PR2) when, then enable Hset
=Hcur+Hmax*PH2；
As (RΔ-last+RΔ-nowThe > R of)/2max*(-PR2) and (RΔ-last+RΔ-now)/2 <=Rmax*(-PR1) when, then enable Hset
=Hcur+Hmax*PH1；
As (RΔ-last+RΔ-nowThe > R of)/2max*(-PR1) when, then do not adjust Hset；
Wherein, HsetMine frequency setting value, H are given for vibrofeedercurGive mine frequency current measured value for vibrofeeder,
HmaxMine maximum frequency, P are given for vibrofeederR3、PR2、PR1、PH3、PH2、PH1It is preset percentage, and PR3、PR2、PR1According to
Secondary reduction, PH3、PH2、PH1It is sequentially reduced.
It is optional:
As R < Rmid-ΔRWhen, increase ore mill inlet amount, comprising:
As R < Rmid-ΔRWhen, by HsetIt is set as Hmax；
As R > Rmid+ΔRWhen, reduce ore mill inlet amount, comprising:
As R > Rmid+ΔRWhen, enable Hset=Hcur+Hmax*(-PHS)；
Wherein, HsetMine frequency setting value, H are given for vibrofeedercurGive mine frequency current measured value for vibrofeeder,
HmaxMine maximum frequency, P are given for vibrofeederHSFor preset percentage.
Optionally, the method also includes in the following way to RmaxIt is adjusted:
Every the second preset duration, the mean value of R in second preset duration is calculated
IfR is then turned upmax；
IfThen turn down Rmax；
Wherein RrFor ore mill rated power.
Optionally, by following formula to RmaxIt is adjusted:
According to a second aspect of the embodiments of the present invention, a kind of ore mill control device is provided, described device includes:
Power acquisition module, for obtaining ore mill current power R；
Power comparison module, for determining current power R and Rmid-ΔRAnd Rmid+ΔRSize relation, wherein RmidFor mill
The median of mine machine power reasonable interval, ΔRFor with RmidCentered on permission undulate quantity, Rmid=Rmax-ΔR, RmaxFor ore mill
Power max-thresholds；
Coarse adjustment module, for working as R < Rmid-ΔRWhen, increase ore mill inlet amount, as R > Rmid+ΔRWhen, reduce ore mill
Inlet amount；
Module is finely tuned, for working as Rmid-ΔR=< R and R <=Rmid+ΔRWhen, according to the variation tendency of ore mill power and
Preset strategy finely tunes ore mill inlet amount；
Wherein, the variation tendency is to become by the ore mill changed power in the first specified duration of terminal of current time
Gesture.
Optionally, the fine tuning module includes:
First fine tuning submodule, if ore mill power keeps ascendant trend, then in the described first specified duration
Ore mill inlet amount is accordingly reduced according to power up speeds；
Second fine tuning submodule, if ore mill power keeps downward trend, then in the described first specified duration
Ore mill inlet amount is increase accordingly according to power decrease speed；
Third finely tunes submodule, if ore mill power has liter to have drop, then not right in the described first specified duration
Ore mill inlet amount is adjusted.
Optionally, the fine tuning module in the following way to keep ascendant trend, keep downward trend, have rise have drop into
Row judgement:
It calculatesWithWherein,For ore mill power in current period
Mean value,For ore mill power mean value in a upper period,It is for ore mill power mean value, current period in phase week before last
From current time-T to the period of current time, a upper period be from current time -2T to the period of current time-T, on
The upper period is from current time -3T to the period of current time -2T, and T is the length in each period, the first specified duration
Including the current period, a upper period and phase week before last；
If RΔ-last> 0 and RΔ-now> 0 then judges that ore mill power keeps ascendant trend；
If RΔ-last< 0 and RΔ-now< 0 then judges that ore mill power keeps downward trend；
If RΔ-last> 0 and RΔ-now< 0, alternatively, RΔ-last< 0 and RΔ-now> 0 then judges that ore mill power has liter to have
Drop.
Optionally, ore mill inlet amount is accordingly reduced according to power up speeds, comprising:
As (RΔ-last+RΔ-now)/2 >=Rmax*PR3When, then enable Hset=Hcur+Hmax*(-PH3)；
As (RΔ-last+RΔ-now)/2 >=Rmax*PR2And (RΔ-last+RΔ-nowThe < R of)/2max*PR3When, then enable Hset=Hcur+
Hmax*(-PH2)；
As (RΔ-last+RΔ-now)/2 >=Rmax*PR1And (RΔ-last+RΔ-nowThe < R of)/2max*PR2When, then enable Hset=Hcur+
Hmax*(-PH1)；
As (RΔ-last+RΔ-nowThe < R of)/2max*PR1When, then do not adjust Hset；
Wherein, HsetMine frequency setting value, H are given for vibrofeedercurGive mine frequency current measured value for vibrofeeder,
HmaxMine maximum frequency, P are given for vibrofeederR3、PR2、PR1、PH3、PH2、PH1It is preset percentage, and PR3、PR2、PR1According to
Secondary reduction, PH3、PH2、PH1It is sequentially reduced.
Optionally, ore mill inlet amount is increase accordingly according to power decrease speed, comprising:
As (RΔ-last+RΔ-now)/2 <=Rmax*(-PR3) when, then enable Hset=Hcur+Hmax*PH3；
As (RΔ-last+RΔ-nowThe > R of)/2max*(-PR3) and (RΔ-last+RΔ-now)/2 <=Rmax*(-PR2) when, then enable Hset
=Hcur+Hmax*PH2；
As (RΔ-last+RΔ-nowThe > R of)/2max*(-PR2) and (RΔ-last+RΔ-now)/2 <=Rmax*(-PR1) when, then enable Hset
=Hcur+Hmax*PH1；
As (RΔ-last+RΔ-nowThe > R of)/2max*(-PR1) when, then do not adjust Hset；
Wherein, HsetMine frequency setting value, H are given for vibrofeedercurGive mine frequency current measured value for vibrofeeder,
HmaxMine maximum frequency, P are given for vibrofeederR3、PR2、PR1、PH3、PH2、PH1It is preset percentage, and PR3、PR2、PR1According to
Secondary reduction, PH3、PH2、PH1It is sequentially reduced.
Optionally, the coarse adjustment module is used for:
As R < Rmid-ΔRWhen, by HsetIt is set as Hmax；
As R > Rmid+ΔRWhen, enable Hset=Hcur+Hmax*(-PHS)；
Wherein, HsetMine frequency setting value, H are given for vibrofeedercurGive mine frequency current measured value for vibrofeeder,
HmaxMine maximum frequency, P are given for vibrofeederHSFor preset percentage.
Optionally, described device further include:
Self-learning module, in the following way to RmaxIt is adjusted:
Every the second preset duration, the mean value of R in second preset duration is calculated
IfR is then turned upmax；
IfThen turn down Rmax；
Wherein RrFor ore mill rated power.
Optionally, by following formula to RmaxIt is adjusted:
The technical solution that the embodiment of the present invention provides can include the following benefits:
In embodiments of the present invention, to the power of ore mill, this important parameter is monitored in real time, according to current power
And the relationship of current power and power reasonable interval, coarse adjustment or fine tuning are carried out to the load (inlet amount) of ore mill, make ore mill
It is able to work under the optimal condition always, neither underrun wastes electric energy, and also excess load does not lead to swollen tripe, and production process can
With the continuous service of stability and high efficiency, ore grinding yield is improved under the premise of ensuring production stable operation and ore grinding quality, finally
Improve economic benefit.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
It can the limitation present invention.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present invention together with specification.
Fig. 1 is a kind of flow chart of ore mill control method shown in an exemplary embodiment according to the present invention；
Fig. 2 is that an exemplary embodiment shows period schematic diagram according to the present invention；
Fig. 3 is a kind of flow chart of ore mill control method shown in an exemplary embodiment according to the present invention；
Fig. 4 is the systematic schematic diagram shown in an exemplary embodiment according to the present invention；
Fig. 5 is a kind of flow chart of ore mill control method shown in an exemplary embodiment according to the present invention；
Fig. 6 is a kind of schematic diagram of ore mill control device shown in an exemplary embodiment according to the present invention；
Fig. 7 is a kind of schematic diagram of ore mill control device shown in an exemplary embodiment according to the present invention；
Fig. 8 is a kind of schematic diagram of ore mill control device shown in an exemplary embodiment according to the present invention.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they be only with it is such as appended
The example of device and method being described in detail in claims, some aspects of the invention are consistent.
Fig. 1 is a kind of flow chart of ore mill control method shown in an exemplary embodiment according to the present invention.This method
It can be used for controlling equipment, such as single-chip microcontroller, host computer.
Shown in Figure 1, this method may include multiple steps.
Step S101 obtains ore mill current power R.
Wherein current power R is detected value.For example, the current power value of an ore mill can be acquired per minute, meanwhile,
Collected performance number can be stored in background data base, be used for subsequent judgement and analysis.
In addition, multiple power detection values can be collected when if acquiring every time, can be averaged as current power
Value.
Step S102 determines current power R and Rmid-ΔRAnd Rmid+ΔRSize relation, wherein RmidFor ore mill power
The median of reasonable interval, ΔRFor with RmidCentered on permission undulate quantity, Rmid=Rmax-ΔR, RmaxIt is maximum for ore mill power
Threshold value.
Wherein, ΔR、RmaxIt is preset value.It these certain preset values nor immobilizes, can optionally be adjusted
It is whole.
In the present embodiment, in order to guarantee that production run is stablized, an ore mill power reasonable interval can be preset, is somebody's turn to do
Section is [Rmid-ΔR,Rmid+ΔR], then implement to control according to current power and the relationship of the power reasonable interval.
ΔRFor with RmidCentered on permission undulate quantity namely ΔRI.e. with RmidIt is permitted to fluctuate width up and down for central axes
Degree, size for example generally can be set to Rmax2~3%, specifically can be depending on on-site actual situations.
Step S103, as R < Rmid-ΔRWhen, increase ore mill inlet amount.
Illustrate that ore mill load is seriously less than normal at this time, inefficiency, it should as early as possible even will be at ore mill in a manner of most fast
Reason amount elevates.As to how changing ore mill treating capacity, the present embodiment is simultaneously not limited, as an example, if it is logical
Cross and give ore mill injecting material to vibration mine machine, then can be improved rock feeder to mine frequency, to improve the processing of ore mill
Amount/inlet amount.
Step S104, as R > Rmid+ΔRWhen, reduce ore mill inlet amount.
Illustrate ore mill just in overload operation at this time, it should ore mill treating capacity lower as early as possible.As an example, can
With reduce rock feeder to mine frequency.
Step S105, works as Rmid-ΔR=< R and R <=Rmid+ΔRWhen, according to the variation tendency of ore mill power and preset
Strategy finely tunes ore mill inlet amount.
Illustrate that ore mill is in reasonable traffic coverage at this time, does not need substantially to be adjusted namely do not needed to carry out thick
It adjusts, although not going wrong currently but in order to avoid future will appear problem, the variation in conjunction with ore mill power is needed to become
Gesture is finely adjusted.
The variation tendency is using current time as the ore mill changed power trend in the first specified duration of terminal.
Within a period of time before current time namely in the first specified duration, by investigating ore mill power
Historical data, although may find that the power of ore mill is currently at reasonable interval, its variation shows certain not
Good trend, such as rising always, or declining always.In order to cope with this bad trend, need to carry out corresponding micro-
It adjusts, eventually leads to power to avoid trend expansion and be detached from reasonable interval.
For how to be finely adjusted according to variation tendency namely the particular content of preset strategy, the present embodiment and without
Limitation, those skilled in the art can according to demand or field condition voluntarily designs, these strategies that can be used here
All without departing from spirit and scope of the invention.
As an example, in this embodiment or some other embodiment of the present invention, according to the variation tendency of ore mill power
And preset strategy, ore mill inlet amount is finely tuned, may include:
If ore mill power keeps ascendant trend, then according to power up speeds phase in the described first specified duration
Ore mill inlet amount should be reduced.
If ore mill power keeps downward trend, then according to power decrease speed phase in the described first specified duration
Ore mill inlet amount should be increased.
For example, if power rise or decline it is too fast, inlet amount should carry out reduction or increase by a relatively large margin, and such as
Fruit power rise or decline are not that quickly, then inlet amount can carry out reduction or increase more by a small margin.
If ore mill power has liter to have drop in the described first specified duration, then ore mill inlet amount is not adjusted
It is whole.
In addition, if ore mill power remains unchanged in the described first specified duration, then also not to ore mill inlet amount
It is adjusted.
As an example, in this embodiment or some other embodiment of the present invention, it can be in the following way in holding
The trend of liter keeps downward trend, has liter to have drop to be judged:
1) it calculatesWith
Wherein,For ore mill power mean value in current period,For ore mill power mean value in a upper period,For ore mill power mean value in phase week before last.
Current period is period from current time-T to current time, and a upper period is from current time -2T to working as
The period of m- T when preceding, phase week before last are from current time -3T to the period of current time -2T, and T is the length in each period
Degree, the first specified duration included the current period, a upper period and phase week before last.
As an example, the division for the period can be found in shown in Fig. 2.
If 2) RΔ-last> 0 and RΔ-now> 0 then judges that ore mill power keeps ascendant trend.
Because power mean value is all increasing within past continuous two periods, it is possible to judge that ore mill power is protected
Hold ascendant trend.
If 3) RΔ-last< 0 and RΔ-now< 0 then judges that ore mill power keeps downward trend.
Similarly, because power mean value is all reducing, it is possible to judge ore mill function within past continuous two periods
Rate keeps downward trend.
If 4) RΔ-last> 0 and RΔ-now< 0, alternatively, RΔ-last< 0 and RΔ-now> 0 then judges that ore mill power has liter
There is drop.
Having to rise has drop to represent in equilibrium state, it is possible to not adjust.
If HsetMine frequency setting value, H are given for vibrofeedercurGive mine frequency current measured value for vibrofeeder, Hmax
Mine maximum frequency, P are given for vibrofeederR3、PR2、PR1、PH3、PH2、PH1It is preset percentage, and PR3、PR2、PR1Successively
Reduce, PH3、PH2、PH1It is sequentially reduced.Then as an example, in this embodiment or some other embodiment of the present invention, according to power
The rate of climb accordingly reduces ore mill inlet amount, may include:
A1) as (RΔ-last+RΔ-now)/2 >=Rmax*PR3When, then enable Hset=Hcur+Hmax*(-PH3)。
Such situation indicates that power up speeds are very fast, so reply HsetCarry out very big reduction.
A2) as (RΔ-last+RΔ-now)/2 >=Rmax*PR2And (RΔ-last+RΔ-nowThe < R of)/2max*PR3When, then enable Hset=
Hcur+Hmax*(-PH2)。
Such situation indicates power up speeds than very fast, so reply HsetIt is compared big reduction.
A3) as (RΔ-last+RΔ-now)/2 >=Rmax*PR1And (RΔ-last+RΔ-nowThe < R of)/2max*PR2When, then enable Hset=
Hcur+Hmax*(-PH1)。
Such situation indicates that power up speeds are general, it is possible to HsetCarry out reduction slightly.
A4) as (RΔ-last+RΔ-nowThe < R of)/2max*PR1When, then do not adjust Hset。
Such situation indicates that power up speeds can be ignored, it is possible to not adjust Hset。
Similar, in this embodiment or some other embodiment of the present invention, mill is increase accordingly according to power decrease speed
Mine machine inlet amount may include:
B1) as (RΔ-last+RΔ-now)/2 <=Rmax*(-PR3) when, then enable Hset=Hcur+Hmax*PH3。
Such situation indicates that power decrease speed is very fast, so reply HsetCarry out very big promotion.
B2) as (RΔ-last+RΔ-nowThe > R of)/2max*(-PR3) and (RΔ-last+RΔ-now)/2 <=Rmax*(-PR2) when, then it enables
Hset=Hcur+Hmax*PH2。
Such situation indicates power decrease speed than very fast, so reply HsetIt is compared big promotion.
B3) as (RΔ-last+RΔ-nowThe > R of)/2max*(-PR2) and (RΔ-last+RΔ-now)/2 <=Rmax*(-PR1) when, then it enables
Hset=Hcur+Hmax*PH1。
Such situation indicates that power decrease speed is general, it is possible to HsetCarry out promotion slightly.
B4) as (RΔ-last+RΔ-nowThe > R of)/2max*(-PR1) when, then do not adjust Hset。
Such situation indicates that power decrease speed can be ignored, it is possible to not adjust Hset。
Wherein, HsetMine frequency setting value, H are given for vibrofeedercurGive mine frequency current measured value for vibrofeeder,
HmaxMine maximum frequency, P are given for vibrofeederR3、PR2、PR1、PH3、PH2、PH1It is preset percentage, and PR3、PR2、PR1According to
Secondary reduction, PH3、PH2、PH1It is sequentially reduced.
As an example, in this embodiment or some other embodiment of the present invention, when needing to carry out coarse adjustment, i.e., as R <
Rmid-ΔROr R > Rmid+ΔRWhen, following coarse adjustment can be carried out:
As R < Rmid-ΔRWhen, by HsetIt is set as Hmax。
As R > Rmid+ΔRWhen, enable Hset=Hcur+Hmax*(-PHS)；
Wherein, HsetMine frequency setting value, H are given for vibrofeedercurGive mine frequency current measured value for vibrofeeder,
HmaxMine maximum frequency, P are given for vibrofeederHSFor preset percentage.
It should be noted that in the present invention, PR3、PR2、PR1、PH3、PH2、PH1、PHSThese percentages are positive value.As for
PR3、PR2、PR1、PH3、PH2、PH1、PHSDeng specific value the present embodiment and be not limited, those skilled in the art can basis
Demand or field condition self-setting.
For example, the numerical value of these percentages can be shown in reference table 1:
Table 1
In addition, after system runs a period of time, it can be based on historical data to RmaxIt is automatically updated, to guarantee to grind
Mine machine overall efficiency highest.
So shown in Figure 3, the method can also include:
Step S301, in the following way to RmaxIt is adjusted:
Every the second preset duration, the mean value of R in second preset duration is calculated
IfR is then turned upmax；
IfThen turn down Rmax。
Wherein RrFor ore mill rated power.
For example, the second preset duration can be N number of T duration, i.e. N*T, wherein N is natural number.
As an example, can be by following formula to RmaxIt is adjusted:
After the completion of adjusting in this way, system will be according to new RmaxIt is run and is controlled, to reach the function of self study.
In the present embodiment, to the power of ore mill, this important parameter is monitored in real time, according to current power and is worked as
The relationship of preceding power and power reasonable interval carries out coarse adjustment or fine tuning to the load (inlet amount) of ore mill, enables ore mill
It works under the optimal condition always, neither underrun wastes electric energy, and also excess load does not lead to swollen tripe, and production process can be steady
Fixed efficient continuous service, improves ore grinding yield under the premise of ensuring production stable operation and ore grinding quality, final to improve
Economic benefit.
The present invention program is further described in conjunction with concrete scene below.
Fig. 4 is the systematic schematic diagram shown in an exemplary embodiment according to the present invention.
Power detecting unit: the unit real-time detection ore mill power data, and it is stored in the database on backstage；
Database: being used to store power detecting unit data detected, uses for computing unit；
Computing unit: the unit reads data from database, and according to the setting value of input and embodies control thinking side
The program of method calculates the frequency of vibrofeeder, finally exports calculated result to control unit；
Control unit: mine frequency is given for controlling vibrofeeder according to calculated result.
Fig. 5 is a kind of flow chart of ore mill control method shown in an exemplary embodiment according to the present invention.Including with
Lower step:
Step S501 carries out system initialization, including input Rmid、T、PR3、PH3、Hmax、RrEtc. the value of numerous parameters.
These parameter values can be selected according to live ore mill operating condition.
Step S502 obtains ore mill performance number R (as per minute) in real time, and stores into background data base.
Step S503, every cycle T time (minute), circulation executes following steps.
The power average value of phase week before last is assigned to by step S504
The power average value in a upper period is assigned to by step S505
Step S506 calculates the power average value of current period and is assigned to
Step S507 was calculated from phase week before last to the power variation R in a upper periodΔ-last。
Step S508 calculated the power variation R from a upper period to current periodΔ-now。
Step S509 judges current power R and Rmid-ΔRAnd Rmid+ΔRSize relation.
Step S510, if R < Rmid-ΔR, then it is maximum to mine set of frequency by rock feeder.
Step S511, if R > Rmid+ΔR, then reduce rock feeder and give mine frequency.
Step S512, if Rmid-ΔR=< R and R <=Rmid+ΔR, then according to RΔ-lastAnd RΔ-nowThe change reflected
Change trend is finely adjusted.
In the present embodiment, to the power of ore mill, this important parameter is monitored in real time, according to current power and is worked as
The relationship of preceding power and power reasonable interval carries out coarse adjustment or fine tuning to the load (inlet amount) of ore mill, enables ore mill
It works under the optimal condition always, neither underrun wastes electric energy, and also excess load does not lead to swollen tripe, and production process can be steady
Fixed efficient continuous service, improves ore grinding yield under the premise of ensuring production stable operation and ore grinding quality, final to improve
Economic benefit.
Following is apparatus of the present invention embodiment, can be used for executing embodiment of the present invention method.For apparatus of the present invention reality
Undisclosed details in example is applied, embodiment of the present invention method is please referred to.
Fig. 6 is a kind of signal of ore mill control device shown in an exemplary embodiment according to the present invention.Referring to Fig. 6 institute
Show, the apparatus may include:
Power acquisition module 601, for obtaining ore mill current power R；
Power comparison module 602, for determining current power R and Rmid-ΔRAnd Rmid+ΔRSize relation, wherein Rmid
For the median of ore mill power reasonable interval, ΔRFor with RmidCentered on permission undulate quantity, Rmid=Rmax-ΔR, RmaxFor mill
Mine machine power max-thresholds；
Coarse adjustment module 603, for working as R < Rmid-ΔRWhen, increase ore mill inlet amount, as R > Rmid+ΔRWhen, reduce mill
Mine machine inlet amount；
Module 604 is finely tuned, for working as Rmid-ΔR=< R and R <=Rmid+ΔRWhen, become according to the variation of ore mill power
Gesture and preset strategy finely tune ore mill inlet amount；
Wherein, the variation tendency is to become by the ore mill changed power in the first specified duration of terminal of current time
Gesture.
Shown in Figure 7, in this embodiment or some other embodiment of the present invention, the fine tuning module includes:
First fine tuning submodule 701, if ore mill power, which keeps rising, to become in the described first specified duration
Gesture then accordingly reduces ore mill inlet amount according to power up speeds；
Second fine tuning submodule 702, if ore mill power keeps decline to become in the described first specified duration
Gesture then increase accordingly ore mill inlet amount according to power decrease speed；
Third finely tunes submodule 703, if ore mill power has liter to have drop, then in the described first specified duration
Ore mill inlet amount is not adjusted.
In this embodiment or some other embodiment of the present invention, the fine tuning module in the following way rises holding
Trend keeps downward trend, has liter to have drop to be judged:
It calculatesWithWherein,For ore mill power in current period
Mean value,For ore mill power mean value in a upper period,It is for ore mill power mean value, current period in phase week before last
From current time-T to the period of current time, a upper period be from current time -2T to the period of current time-T, on
The upper period is from current time -3T to the period of current time -2T, and T is the length in each period, the first specified duration
Including the current period, a upper period and phase week before last；
If RΔ-last> 0 and RΔ-now> 0 then judges that ore mill power keeps ascendant trend；
If RΔ-last< 0 and RΔ-now< 0 then judges that ore mill power keeps downward trend；
If RΔ-last> 0 and RΔ-now< 0, alternatively, RΔ-last< 0 and RΔ-now> 0 then judges that ore mill power has liter to have
Drop.
In this embodiment or some other embodiment of the present invention, ore mill charging is accordingly reduced according to power up speeds
Amount, comprising:
As (RΔ-last+RΔ-now)/2 >=Rmax*PR3When, then enable Hset=Hcur+Hmax*(-PH3)；
As (RΔ-last+RΔ-now)/2 >=Rmax*PR2And (RΔ-last+RΔ-nowThe < R of)/2max*PR3When, then enable Hset=Hcur+
Hmax*(-PH2)；
As (RΔ-last+RΔ-now)/2 >=Rmax*PR1And (RΔ-last+RΔ-nowThe < R of)/2max*PR2When, then enable Hset=Hcur+
Hmax*(-PH1)；
As (RΔ-last+RΔ-nowThe < R of)/2max*PR1When, then do not adjust Hset；
Wherein, HsetMine frequency setting value, H are given for vibrofeedercurGive mine frequency current measured value for vibrofeeder,
HmaxMine maximum frequency, P are given for vibrofeederR3、PR2、PR1、PH3、PH2、PH1It is preset percentage, and PR3、PR2、PR1According to
Secondary reduction, PH3、PH2、PH1It is sequentially reduced.
In this embodiment or some other embodiment of the present invention, ore mill charging is increase accordingly according to power decrease speed
Amount, comprising:
As (RΔ-last+RΔ-now)/2 <=Rmax*(-PR3) when, then enable Hset=Hcur+Hmax*PH3；
As (RΔ-last+RΔ-nowThe > R of)/2max*(-PR3) and (RΔ-last+RΔ-now)/2 <=Rmax*(-PR2) when, then enable Hset
=Hcur+Hmax*PH2；
As (RΔ-last+RΔ-nowThe > R of)/2max*(-PR2) and (RΔ-last+RΔ-now)/2 <=Rmax*(-PR1) when, then enable Hset
=Hcur+Hmax*PH1；
As (RΔ-last+RΔ-nowThe > R of)/2max*(-PR1) when, then do not adjust Hset；
Wherein, HsetMine frequency setting value, H are given for vibrofeedercurGive mine frequency current measured value for vibrofeeder,
HmaxMine maximum frequency, P are given for vibrofeederR3、PR2、PR1、PH3、PH2、PH1It is preset percentage, and PR3、PR2、PR1According to
Secondary reduction, PH3、PH2、PH1It is sequentially reduced.
In this embodiment or some other embodiment of the present invention, the coarse adjustment module is used for:
As R < Rmid-ΔRWhen, by HsetIt is set as Hmax；
As R > Rmid+ΔRWhen, enable Hset=Hcur+Hmax*(-PHS)；
Wherein, HsetMine frequency setting value, H are given for vibrofeedercurGive mine frequency current measured value for vibrofeeder,
HmaxMine maximum frequency, P are given for vibrofeederHSFor preset percentage.
Referring also to shown in Fig. 8, in this embodiment or some other embodiment of the present invention, described device further include:
Self-learning module 801, in the following way to RmaxIt is adjusted:
Every the second preset duration, the mean value of R in second preset duration is calculated
IfR is then turned upmax；
IfThen turn down Rmax；
Wherein RrFor ore mill rated power.
In this embodiment or some other embodiment of the present invention, by following formula to RmaxIt is adjusted:
In the present embodiment, to the power of ore mill, this important parameter is monitored in real time, according to current power and is worked as
The relationship of preceding power and power reasonable interval carries out coarse adjustment or fine tuning to the load (inlet amount) of ore mill, enables ore mill
It works under the optimal condition always, neither underrun wastes electric energy, and also excess load does not lead to swollen tripe, and production process can be steady
Fixed efficient continuous service, improves ore grinding yield under the premise of ensuring production stable operation and ore grinding quality, final to improve
Economic benefit.
About the device in above-described embodiment, wherein each unit module execute the concrete mode of operation related
It is described in detail in the embodiment of this method, no detailed explanation will be given here.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to of the invention its
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
Person's adaptive change follows general principle of the invention and including the undocumented common knowledge in the art of the present invention
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by appended
Claim is pointed out.
It should be understood that the present invention is not limited to the precise structure already described above and shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.
Claims (14)
1. a kind of ore mill control method, which is characterized in that the described method includes:
Obtain ore mill current power R；
Determine current power R and Rmid-ΔRAnd Rmid+ΔRSize relation, wherein RmidFor in ore mill power reasonable interval
Between be worth, ΔRFor with RmidCentered on permission undulate quantity, Rmid=Rmax-ΔR, RmaxFor ore mill power max-thresholds；
As R < Rmid-ΔRWhen, increase ore mill inlet amount；
As R > Rmid+ΔRWhen, reduce ore mill inlet amount；
Work as Rmid-ΔR=< R and R <=Rmid+ΔRWhen, according to the variation tendency and preset strategy of ore mill power, finely tune ore grinding
Machine inlet amount；
Wherein, the variation tendency is using current time as the ore mill changed power trend in the first specified duration of terminal；
And
According to the variation tendency and preset strategy of ore mill power, ore mill inlet amount is finely tuned, comprising:
If ore mill power keeps ascendant trend in the described first specified duration, then accordingly dropped according to power up speeds
Low ore mill inlet amount；
If ore mill power keeps downward trend in the described first specified duration, then accordingly increased according to power decrease speed
Add ore mill inlet amount；
If ore mill power has liter to have drop in the described first specified duration, then ore mill inlet amount is not adjusted.
2. the method according to claim 1, wherein declining in the following way to holding ascendant trend, holding
Trend has liter to have drop to be judged:
It calculatesWithWherein,For ore mill power mean value in current period,For ore mill power mean value in a upper period,For ore mill power mean value in phase week before last, current period is from current
When m- T to the period of current time, a upper period is from current time -2T to the period of current time-T, phase week before last
For from current time -3T, to the period of current time -2T, T is the length in each period, and the first specified duration includes institute
Stated current period, a upper period and phase week before last；
If RΔ-last> 0 and RΔ-now> 0 then judges that ore mill power keeps ascendant trend；
If RΔ-last< 0 and RΔ-now< 0 then judges that ore mill power keeps downward trend；
If RΔ-last> 0 and RΔ-now< 0, alternatively, RΔ-last< 0 and RΔ-now> 0 then judges that ore mill power has liter to have drop.
3. according to the method described in claim 2, it is characterized in that, accordingly reducing ore mill charging according to power up speeds
Amount, comprising:
As (RΔ-last+RΔ-now)/2 >=Rmax*PR3When, then enable Hset=Hcur+Hmax*(-PH3)；
As (RΔ-last+RΔ-now)/2 >=Rmax*PR2And (RΔ-last+RΔ-nowThe < R of)/2max*PR3When, then enable Hset=Hcur+Hmax*
(-PH2)；
As (RΔ-last+RΔ-now)/2 >=Rmax*PR1And (RΔ-last+RΔ-nowThe < R of)/2max*PR2When, then enable Hset=Hcur+Hmax*
(-PH1)；
As (RΔ-last+RΔ-nowThe < R of)/2max*PR1When, then do not adjust Hset；
Wherein, HsetMine frequency setting value, H are given for vibrofeedercurGive mine frequency current measured value for vibrofeeder, Hmax
Mine maximum frequency, P are given for vibrofeederR3、PR2、PR1、PH3、PH2、PH1It is preset percentage, and PR3、PR2、PR1Successively
Reduce, PH3、PH2、PH1It is sequentially reduced.
4. according to the method described in claim 2, it is characterized in that, increaseing accordingly ore mill charging according to power decrease speed
Amount, comprising:
As (RΔ-last+RΔ-now)/2 <=Rmax*(-PR3) when, then enable Hset=Hcur+Hmax*PH3；
As (RΔ-last+RΔ-nowThe > R of)/2max*(-PR3) and (RΔ-last+RΔ-now)/2 <=Rmax*(-PR2) when, then enable Hset=Hcur
+Hmax*PH2；
As (RΔ-last+RΔ-nowThe > R of)/2max*(-PR2) and (RΔ-last+RΔ-now)/2 <=Rmax*(-PR1) when, then enable Hset=Hcur
+Hmax*PH1；
As (RΔ-last+RΔ-nowThe > R of)/2max*(-PR1) when, then do not adjust Hset；
Wherein, HsetMine frequency setting value, H are given for vibrofeedercurGive mine frequency current measured value for vibrofeeder, Hmax
Mine maximum frequency, P are given for vibrofeederR3、PR2、PR1、PH3、PH2、PH1It is preset percentage, and PR3、PR2、PR1Successively
Reduce, PH3、PH2、PH1It is sequentially reduced.
5. according to the method described in claim 1, it is characterized by:
As R < Rmid-ΔRWhen, increase ore mill inlet amount, comprising:
As R < Rmid-ΔRWhen, by HsetIt is set as Hmax；
As R > Rmid+ΔRWhen, reduce ore mill inlet amount, comprising:
As R > Rmid+ΔRWhen, enable Hset=Hcur+Hmax*(-PHS)；
Wherein, HsetMine frequency setting value, H are given for vibrofeedercurGive mine frequency current measured value for vibrofeeder, Hmax
Mine maximum frequency, P are given for vibrofeederHSFor preset percentage.
6. the method according to claim 1, wherein the method also includes in the following way to RmaxIt carries out
Adjustment:
Every the second preset duration, the mean value of R in second preset duration is calculated
IfR is then turned upmax；
IfThen turn down Rmax；
Wherein RrFor ore mill rated power.
7. according to the method described in claim 6, it is characterized in that, by following formula to RmaxIt is adjusted:
8. a kind of ore mill control device, which is characterized in that described device includes:
Power acquisition module, for obtaining ore mill current power R；
Power comparison module, for determining current power R and Rmid-ΔRAnd Rmid+ΔRSize relation, wherein RmidFor ore mill
The median of power reasonable interval, ΔRFor with RmidCentered on permission undulate quantity, Rmid=Rmax-ΔR, RmaxFor ore mill power
Max-thresholds；
Coarse adjustment module, for working as R < Rmid-ΔRWhen, increase ore mill inlet amount, as R > Rmid+ΔRWhen, reduce ore mill charging
Amount；
Module is finely tuned, for working as Rmid-ΔR=< R and R <=Rmid+ΔRWhen, according to the variation tendency of ore mill power and preset
Strategy finely tunes ore mill inlet amount；
Wherein, the variation tendency is using current time as the ore mill changed power trend in the first specified duration of terminal；
And
The fine tuning module includes:
First fine tuning submodule, if ore mill power keeps ascendant trend, then basis in the described first specified duration
Power up speeds accordingly reduce ore mill inlet amount；
Second fine tuning submodule, if ore mill power keeps downward trend, then basis in the described first specified duration
Power decrease speed increase accordingly ore mill inlet amount；
Third finely tunes submodule, if ore mill power has liter to have drop, then not to ore grinding in the described first specified duration
Machine inlet amount is adjusted.
9. device according to claim 8, which is characterized in that the fine tuning module rises holding to become in the following way
Gesture keeps downward trend, has liter to have drop to be judged:
It calculatesWithWherein,For ore mill power mean value in current period,For ore mill power mean value in a upper period,For ore mill power mean value in phase week before last, current period is from current
When m- T to the period of current time, a upper period is from current time -2T to the period of current time-T, phase week before last
For from current time -3T, to the period of current time -2T, T is the length in each period, and the first specified duration includes institute
Stated current period, a upper period and phase week before last；
If RΔ-last> 0 and RΔ-now> 0 then judges that ore mill power keeps ascendant trend；
If RΔ-last< 0 and RΔ-now< 0 then judges that ore mill power keeps downward trend；
If RΔ-last> 0 and RΔ-now< 0, alternatively, RΔ-last< 0 and RΔ-now> 0 then judges that ore mill power has liter to have drop.
10. device according to claim 9, which is characterized in that accordingly reduce ore mill charging according to power up speeds
Amount, comprising:
As (RΔ-last+RΔ-now)/2 >=Rmax*PR3When, then enable Hset=Hcur+Hmax*(-PH3)；
As (RΔ-last+RΔ-now)/2 >=Rmax*PR2And (RΔ-last+RΔ-nowThe < R of)/2max*PR3When, then enable Hset=Hcur+Hmax*
(-PH2)；
As (RΔ-last+RΔ-now)/2 >=Rmax*PR1And (RΔ-last+RΔ-nowThe < R of)/2max*PR2When, then enable Hset=Hcur+Hmax*
(-PH1)；
As (RΔ-last+RΔ-nowThe < R of)/2max*PR1When, then do not adjust Hset；
Wherein, HsetMine frequency setting value, H are given for vibrofeedercurGive mine frequency current measured value for vibrofeeder, Hmax
Mine maximum frequency, P are given for vibrofeederR3、PR2、PR1、PH3、PH2、PH1It is preset percentage, and PR3、PR2、PR1Successively
Reduce, PH3、PH2、PH1It is sequentially reduced.
11. device according to claim 9, which is characterized in that increase accordingly ore mill charging according to power decrease speed
Amount, comprising:
As (RΔ-last+RΔ-now)/2 <=Rmax*(-PR3) when, then enable Hset=Hcur+Hmax*PH3；
As (RΔ-last+RΔ-nowThe > R of)/2max*(-PR3) and (RΔ-last+RΔ-now)/2 <=Rmax*(-PR2) when, then enable Hset=Hcur
+Hmax*PH2；
As (RΔ-last+RΔ-nowThe > R of)/2max*(-PR2) and (RΔ-last+RΔ-now)/2 <=Rmax*(-PR1) when, then enable Hset=Hcur
+Hmax*PH1；
As (RΔ-last+RΔ-nowThe > R of)/2max*(-PR1) when, then do not adjust Hset；
Wherein, HsetMine frequency setting value, H are given for vibrofeedercurGive mine frequency current measured value for vibrofeeder, Hmax
Mine maximum frequency, P are given for vibrofeederR3、PR2、PR1、PH3、PH2、PH1It is preset percentage, and PR3、PR2、PR1Successively
Reduce, PH3、PH2、PH1It is sequentially reduced.
12. device according to claim 8, which is characterized in that the coarse adjustment module is used for:
As R < Rmid-ΔRWhen, by HsetIt is set as Hmax；
As R > Rmid+ΔRWhen, enable Hset=Hcur+Hmax*(-PHS)；
Wherein, HsetMine frequency setting value, H are given for vibrofeedercurGive mine frequency current measured value for vibrofeeder, Hmax
Mine maximum frequency, P are given for vibrofeederHSFor preset percentage.
13. device according to claim 8, which is characterized in that described device further include:
Self-learning module, in the following way to RmaxIt is adjusted:
Every the second preset duration, the mean value of R in second preset duration is calculated
IfR is then turned upmax；
IfThen turn down Rmax；
Wherein RrFor ore mill rated power.
14. device according to claim 13, which is characterized in that by following formula to RmaxIt is adjusted:
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