CN102680061B - Powder ash material weighing system and weighing method - Google Patents
Powder ash material weighing system and weighing method Download PDFInfo
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- CN102680061B CN102680061B CN201210124070.9A CN201210124070A CN102680061B CN 102680061 B CN102680061 B CN 102680061B CN 201210124070 A CN201210124070 A CN 201210124070A CN 102680061 B CN102680061 B CN 102680061B
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- 238000005303 weighing Methods 0.000 title claims abstract description 142
- 239000000463 material Substances 0.000 title claims abstract description 121
- 239000000843 powder Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000007599 discharging Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 239000002956 ash Substances 0.000 description 30
- 230000010349 pulsation Effects 0.000 description 8
- 239000004568 cement Substances 0.000 description 3
- 238000007600 charging Methods 0.000 description 3
- 239000010881 fly ash Substances 0.000 description 3
- 206010021703 Indifference Diseases 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
- Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
Abstract
The invention provides a powder ash material weighing system and a weighing method. The powder ash material weighing system comprises at least two pieces of material weighing equipment and a control device, wherein the control device is connected with each piece of material weighing equipment; different pieces of material weighing equipment are used for weighing material with different precisions; and the control device is used for sending weighing signals with different precisions according to the expected calculated value of powder ash material and the calculated value after powder ash material is weighed, and for driving start-up and closing of different pieces of material weighing equipment according to the weighing signals with different precisions. According to the invention, the control device is used for controlling the at least two pieces of material weighing equipment with different precisions, so that precise weighing of powder ash material is further realized when rough weighing is realized, the weighing efficiency is high, and therefore, high-precision and high-efficiency weighing of material is realized.
Description
Technical field
The present invention relates to engineering machinery field, relate in particular in concrete-agitating technical field, powder ash material weighing system and weighing technique.
Background technology
At present, at construction machinery industry, metallurgy industry and packaging industry, the conveying device that weighs cement, flyash, breeze and so on is all to adopt single speed to weigh, and this weighing mode is owing to must taking into account speed, even if weighing precision is optimized to some extent, but enough not meticulous yet.
Take concrete mixing plant as example, concrete mixing plant is to weigh the material equipment the most frequently such as cement, flyash, breeze, is mainly the making for completing normal concrete and special concrete.Wherein, special concrete is mainly used on the heavy haul railway and high ferro of China.Special concrete is except the high feature of label, and its precision needing is also high especially.
And common mixing plant is owing to adopting single helical feed tubular construction, can not realize to powder ash material continue, stable, high precision and high efficiency weighing.
Summary of the invention
The present invention proposes a kind of powder ash material weighing system and weighing technique, to realize material high precision, high efficiency weighing.
First aspect, the invention discloses a kind of powder ash material weighing system, comprise at least two material weighing equipment and the control device being connected with each material weighing equipment respectively, wherein, described at least two material weighing equipment are respectively used to realize the weighing of material different accuracy; Described control device, for according to the target variable of powder ash material with currently weighed complete variable, sends the weighing signal of different accuracy, and according to the weighing signal of different accuracy, the startup that drives different material weighing equipment with close.
Preferably, in described powder ash material weighing system, comprise two material weighing equipment, be respectively the first material weighing equipment and the second material weighing equipment.Described control device comprises the first controller and second controller, and described the first controller is for according to the target variable of powder ash material with currently weighed complete variable, sends the first weighing signal or second and weighs signal; Described second controller is connected with described the first controller, the first material weighing equipment and described the second material weighing equipment respectively, for weighing signal or second according to described first, weigh signal, drive the startup of the first material weighing equipment or the second material weighing equipment and close.
Preferably, in described powder ash material weighing system, described the first material weighing equipment comprises motor and the first spiral conveyer being connected with described motor; Described the second material weighing equipment comprises the solenoid valve of butterfly valve and the described butterfly valve work of driving, and described butterfly valve is arranged at the below of the discharging opening of described the first spiral conveyer; Described second controller is connected with described solenoid valve with described motor respectively, described the first weighing signal or the second weighing signal that for receiving described the first controller, send; And, according to the weighing signal obtaining, control the startup of described motor and described butterfly valve and close.
Preferably, in described powder ash material weighing system, described control device further comprises industrial computer, and this industrial computer is connected with described second controller with described the first controller respectively, for adjusting the running parameter of described the first controller and second controller.
Second aspect, the invention also discloses a kind of powder ash material weighing method, the powder ash material weighing system based on above-mentioned.Comprise the steps: that target variable foresee steps, weighing signal send step and control step.Target variable foresee steps is, goal-selling variable in described control device; Weigh signal and send step and be, described control device is according to the target variable of powder ash material and currently weighed complete variable, sends the different signals that weigh;
Described control step is: when described the first controller sends weighing signal corresponding to described the second material weighing equipment, described motor cuts out, and described the first spiral conveyer quits work; Meanwhile, described butterfly valve starts, and under the effect of pulse, described butterfly valve constantly opens and the action of cutting out, and material is shaken off; And, when described the first controller detects that material is inadequate, described second controller can also send the crawl signal of motor described in crawl, described motor according to described crawl signal drive described the first spiral conveyer to and material, then restart described butterfly valve.
Preferably, in above-mentioned weighing technique, described control device further comprises industrial computer; Be connected with described second controller with described the first controller respectively; And described control step is further to be adjusted the running parameter of described the first controller and second controller by described industrial computer.
In the present invention, by adopting control device to control at least two cover weighing equipments with different weighing precisions, when realizing thick title of powder ash material, can further realize the essence of material is claimed, and, weighing efficiency can be improved.This shows, the present invention has realized the weighing of material " high precision " and " high-level efficiency ".
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Figure 1A is the structured flowchart of powder ash material weighing system of the present invention;
Figure 1B is in powder ash material weighing system embodiment of the present invention, the structural representation of control device;
Fig. 2 is the structural representation of powder ash material weighing system embodiment of the present invention;
Fig. 3 is the control flow chart as second controller by PLC controller;
Fig. 4 is in embodiment of powder ash material weighing system of the present invention, the structured flowchart of control device;
Fig. 5 is that in the powder ash material weighing system embodiment shown in Fig. 4 of the present invention, the control of control device is related to schematic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.And in the situation that not conflicting, the feature in following embodiment and embodiment can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.Based on the embodiment in the present invention, those of ordinary skills, not being the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
With reference to Figure 1A, Figure 1A is the structured flowchart of powder ash material weighing system embodiment of the present invention.
In this embodiment, powder ash material weighing system comprises the first material weighing equipment 100 and the second material weighing equipment 200, and the control device 300 being connected with each material weighing equipment respectively; Control device 300, for according to the target variable of powder ash material with currently weighed complete variable, sends different weighing signals, and according to different weighing signals, the startup that drives different material weighing equipment with close.In the present embodiment, by adopting control device to control at least two cover weighing equipments, when realizing thick title of powder ash material, can further realize the essence of material is claimed, and, weighing efficiency can be improved.This shows, the present invention has realized the weighing of material " high precision " and " high-level efficiency ".
With reference to Figure 1B, Figure 1B is in an embodiment of powder ash material weighing system, the structural representation of controller.The first controller 310 of control device 300, for according to the target variable of powder ash material with currently weighed complete variable, sends the first weighing signal or second and weighs signal, so the first controller 310 reality are " weighing controller "; Second controller 320 is for according to different weighing signals, drive the startup of different material weighing equipment and close in the present embodiment, by adopting control device 300, two cover weighing equipments are controlled, when realizing thick title of powder ash material, can further realize the essence of material is claimed, and, can improve weighing efficiency.
It should be noted that, in this embodiment, only comprise two cover material weighing equipment, be understandable that, for a person skilled in the art, according to the actual needs, it is also feasible that three covers, quadruplet or more cover material weighing equipment are set.The present invention does not limit for the quantity of material weighing equipment; and each material weighing equipment is all connected with control device; according to different weighing signals; drive the startup of different material weighing equipment and close; and then realize the product that high precision weighs, all within protection scope of the present invention.
In Figure 1A, the first material weighing equipment 100 and the second material weighing equipment 200 can have multiple choices mode.Below in conjunction with Fig. 2, a kind of implementation is wherein described in detail.
With reference to Fig. 2, the first material weighing equipment 100 comprises motor 110 and the first spiral conveyer 120 being connected with motor 110; The first spiral conveyer 120 comprises charging aperture 1201 and discharging opening 1202.The second material weighing equipment comprises that butterfly valve 210 is not shown with the solenoid valve that drives butterfly valve 210 to work, and this butterfly valve 210 is arranged at the below of the discharging opening 1202 of the first spiral conveyer 120.
The weighing precision of the first spiral conveyer 120 obviously, being driven by motor 110 is less than the weighing precision of butterfly valve 210.
When work, when the first controller 310 sends the weighing signal of butterfly valve 210 correspondences, motor 110 cuts out, thereby the first spiral conveyer 120 quits work; Meanwhile, butterfly valve 210 starts, and under the effect of pulse, butterfly valve 210 constantly opens and the action of cutting out, and material is shaken off, and by the mode of this " shaking off ", realizes the weighing of high precision material.
And, in weighing process, may run into such a case, when control device 300 detects that material is inadequate, that is to say, discharging opening from the first spiral conveyer 120 drops down onto the material of butterfly valve 210 and all " is shaken off " after weighing hopper, find that the current variable that has weighed complete material in scale hooper does not also reach target variable, at this moment, second controller 320 in control device 300 can also send the crawl signal of " crawl " motor 110, this crawl signal make motor 110 drive the first spiral conveyer 120 suitably give and material to butterfly valve 210, then restart butterfly valve 210, continue to repeat the work of above-mentioned " shaking off ", until reach the desired value of weighing.
In the present embodiment, by the spiral conveyer of driven by motor, complete " slightly claim ", at control device, send after the second weighing signal, the action that butterfly valve constantly opens and closes by pulse action, makes material " shaking off ", completes the weighing of " essence claims ".Also just scold, the present embodiment is to adopt variable frequency control, realize the cooperation of " slightly claiming " and " essence claims ", and then the present embodiment has been realized the weighing of material " high precision " and " high-level efficiency " by the spiral conveyer of driven by motor and the cooperation of butterfly valve.
When concrete enforcement above-described embodiment, the second controller 320 in control device 300 can adopt PLC controller.This PLC controller is connected with the first controller 310, motor 110 and the solenoid valve that drives butterfly valve 210 respectively; The effect of this PLC controller is to receive the first weighing signal (slightly claiming signal) or the second weighing signal (essence claims signal) that the first controller 310 sends; And, according to the weighing signal obtaining, carry out the unlatching of motor 110 and butterfly valve 210 or close.
At this, it should be noted that, PLC controller is only the preferred implementation of the one of second controller 310, and the controller of other types is also fine as long as can realize the function of PLC controller, and the present invention does not limit at this.
Below, the control procedure of PLC controller is further described.
The first controller 310 need provide thick title signal or essence claims signal to PLC controller, when function is closed, dish valve 210 is always in opening, material weighing only has a kind of speed, the i.e. transfer rate of the first spiral conveyer 120, this speed is directly related with the rotating speed of motor 110, now, system is in the thick title stage, and common mixing plant is as good as.When essence claims that function is opened, system, when essence claims the time period, realizes the pulsation action of opening, close, open, closing to staying material remaining on dish valve 210, thereby material is trembled under the effect of dish valve 210 seemingly with " intelligence ".
PLC controller can also send the crawl signal of " crawl " motor 110, this crawl signal make motor 110 drive the first spiral conveyer 120 suitably give and material to butterfly valve 210, then restart butterfly valve 210, continue to repeat the work of above-mentioned " shaking off ", until reach the desired value of weighing.This shows, material is a bit, a bit to unload the weighing process that drops down onto scale hooper and complete superhigh precision.
From the description of said process, can find out, PLC controller need increase by 1 input, and the position of the main opening and closing that detect pulsation dish valve 210, also needs 1 output point, output signal to the solenoid valve being connected with PLC controller, the moving dish valve 210 of solenoid valve conduction gas drive moves.Certainly, butterfly valve 210 is not limited only to the driving of gases at high pressure, also can adopt hydraulic-driven.Dish valve 210 is made or is bought according to the size of the first spiral conveyer.
Below in conjunction with Fig. 3, to the essence of PLC controller, claiming control procedure to do more clearly describes.With reference to Fig. 3, Fig. 3 is the control flow chart that the essence of PLC controller claims.
First several variablees of using are explained.
M: the variable of current time powder ash material;
M
x: specific material, under specific operation, the threshold value that starts to carry out the operation of essence title that capable field technique personnel are given in advance.
For example, the concrete of the double centner of weighing, sets m
concrete=80 kilograms, so, in the time of m=80 kilogram, start essence and claim operation, by butterfly valve, shaken off to be left the weighing of 20 kilograms.Obviously, can improve weighing precision during such operation.
S: the count value that butterfly valve counter is current
S
x: butterfly valve starts the moment t1 that essence claims operation, to needs crawl motor this moment t2, and between these two moment, the number of the recurrence interval that butterfly valve experiences.That is to say, this parameter represented after how many recurrence intervals of butterfly valve work, needed crawl motor, again give and material to butterfly valve.This parameter is given according to actual condition, work efficiency and experience by those skilled in the art.
M
min: instrument is assert indifference value
As m≤m
xtime, when the first controller 310 provides essence title signal, now, PLC controller sends essence and claims signal, m
xmotor 110 shuts down, and butterfly valve 210 ceaselessly opens, cuts out, opens closing motion, so circulation;
Complete after one-period, PLC controller counter S adds 1;
By the pulsation of butterfly valve, material bit by bit unloads and drops down onto scale hooper.Make m
minfor instrument is assert indifference value, if certain t moment, so m again
t≤ m
mintime, completed weighing process, weigh and finish.
If at certain t moment, m<m
x, but the value S=S of counter
xtime, that is to say, system can detect material when inadequate, and crawl motor 110 is given and material, and then is restarted dish valve 210 and do shuttling movement.
The variable of using in above-described embodiment, m, m
x, S, S
xor m
mincan be given in advance by those skilled in the art in advance, certainly, more preferred a kind of situation is to adjust at any time according to situations such as actual operating mode, weighing efficiency.
According to this thinking, with reference to Fig. 4, the more preferred a kind of control mode of above-described embodiment is that control device 300 further comprises industrial computer 330, for adjusting the running parameter of the first controller 310 and butterfly valve 210.Industrial computer 330 is connected with second controller 320 with the first controller 310 respectively.Concrete, second controller 320 is PLC controller.During work, by industrial computer 330, adjusted the running parameter of the first controller 310 and described butterfly valve 210, PLC controller 320 startup to described motor 110 and described butterfly valve 210 and close and control according to running parameter.
Wherein, the running parameter of the first controller 310 and butterfly valve 210 comprises m, m
x, S, S
xor m
min.
That is to say, in the interface of industrial computer 330, the pulsation time 210 cycle of butterfly valve is T
x, cement essence claims dish valve pulsation time T s, flyash essence to claim dish valve pulsation time T
for the unclassified stores time all can be for regulating.And, restart motor pulsation number of times S
xalso adjustable.The powder pulsation time T that it will be apparent to those skilled in the art that butterfly valve is longer, and butterfly valve completes that time of a whole set of action is longer, and in the unit interval, nowadays the material of scale hooper is more, and speed is faster, works as time T
xbe greater than the whole actual material loading time t of powder ash
xtime, i.e. T
x>=t
xtime, be equivalent to close essence and claim function.
With reference to Fig. 5, Fig. 5 is that in the powder ash material weighing system embodiment shown in Fig. 4 of the present invention, the control of control device is related to schematic diagram.
This shows, above-described embodiment, only added a butterfly valve, realized smart title by most economical method, and the implementation procedure that essence claims is to realize by PLC controller, but the control of PLC controller is again to rely on the adjustment of industrial computer to relevant device running parameter, reaches the maximized of efficiency and precision.And, simple and practical, widely applicable.
More than describe in detail and adopt spiral conveyer and butterfly valve to realize the thick weighing mode that combines with essence title of claiming, in addition, can also be in the following way:
The first material weighing equipment is the second spiral conveyer being connected with motor; The second material weighing equipment is the triple helical conveyer being connected with another motor; And the second spiral comb material machine is different from the circulation of triple helical conveyer.That is to say, can claim worm conveyor to substitute by larger thick title worm conveyor and a less essence of circulation of circulation, adopt small one and large one two worm conveyor chargings, both can guarantee charging rate, shorten metering cycle, also can in the co-ordination of different time sections, guarantee final measuring accuracy by two worm conveyors simultaneously.
In addition, the invention allows for a kind of powder ash material weighing method, the Weighing system of this weighing technique based on above-mentioned.Due to concrete principle and weighing technique in the above-described embodiments, done detailed description, therefore, the present invention no longer describes at this, relevant part is with reference to the description of above-described embodiment.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (4)
1. a powder ash material weighing system, is characterized in that, comprises two material weighing equipment and the control device (300) being connected with each material weighing equipment respectively, wherein,
Described two material weighing equipment are: the first material weighing equipment (100) and the second material weighing equipment (200);
Described control device (300) comprises the first controller (310) and second controller (320), and, described the first controller (310), for according to the target variable of powder ash material with currently weighed complete variable, sends the first weighing signal or second and weighs signal;
Described the first material weighing equipment (100) comprises motor (110) and the first spiral conveyer (120) being connected with described motor (110); Described the second material weighing equipment comprises butterfly valve (210) and the solenoid valve that drives described butterfly valve (210) to work, and described butterfly valve (210) is arranged at the below of the discharging opening (1202) of described the first spiral conveyer (120);
Described second controller (320) is connected with described solenoid valve with described motor (110) respectively, described the first weighing signal or the precision weighing signal that for receiving described the first controller (310), send; And, according to the weighing signal obtaining, control the startup of described motor (110) and described butterfly valve (210) and close.
2. powder ash material weighing system according to claim 1, is characterized in that,
Described control device (300) further comprises:
Industrial computer (330), is connected with described second controller (320) with described the first controller (310) respectively, for adjusting the running parameter of described the first controller (310) and second controller (320).
3. a weighing technique for powder ash material weighing system according to claim 1, is characterized in that,
Comprise the steps:
Target variable foresee steps, goal-selling variable in described control device (300);
Weigh signal and send step, the first controller (310) in described control device (300) is according to the target variable of powder ash material and currently weighed complete variable, sends the different signals that weigh;
Control step, when described the first controller (310) sends the weighing signal of described the second material weighing equipment (200) correspondence, described second controller (320) is controlled described motor (110) and is closed, and described the first spiral conveyer (120) quits work; Meanwhile, control described butterfly valve (210) and start, under the effect of pulse, described butterfly valve (210) constantly opens and the action of cutting out, and material is shaken off; And, when described the first controller (310) detects that material is inadequate, described second controller (320) can also send the crawl signal of motor (110) described in crawl, described motor (110) according to described crawl signal drive described the first spiral conveyer (120) give and material, then restart described butterfly valve (210).
4. powder ash material weighing method according to claim 3, is characterized in that
Described control device (300) further comprises industrial computer (330); Be connected with described second controller (320) with described the first controller (310) respectively; And
Described control step is further by described industrial computer (330), to be adjusted the running parameter of described the first controller (310) and second controller (320).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210124070.9A CN102680061B (en) | 2012-04-25 | 2012-04-25 | Powder ash material weighing system and weighing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210124070.9A CN102680061B (en) | 2012-04-25 | 2012-04-25 | Powder ash material weighing system and weighing method |
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| CN102680061A CN102680061A (en) | 2012-09-19 |
| CN102680061B true CN102680061B (en) | 2014-04-16 |
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| CN103358401B (en) * | 2012-11-20 | 2015-11-18 | 北汽福田汽车股份有限公司 | Double speed measurement control method and device |
| CN104552610B (en) * | 2014-12-26 | 2017-04-05 | 三一汽车制造有限公司 | The ingredient control method and system of concrete mixing plant |
| CN105841783A (en) * | 2015-01-12 | 2016-08-10 | 中联重科股份有限公司 | Material metering device and control method thereof |
| CN105151795A (en) * | 2015-06-09 | 2015-12-16 | 山东三友饲料科技有限公司 | Device, system, and method for automatically adding material |
| CN106526270A (en) * | 2016-11-10 | 2017-03-22 | 上海华虹集成电路有限责任公司 | Measurement system |
| CN109883523B (en) * | 2019-04-06 | 2024-09-27 | 南阳盛易德环保科技有限公司 | Accurate metering device applied to materials with insufficient fluidity and control method |
| CN111765956B (en) * | 2020-06-30 | 2021-09-24 | 三一汽车制造有限公司 | Weighing method for material in storage bin, weighing device and computer readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4880142A (en) * | 1987-05-12 | 1989-11-14 | Fuji Photo Film Co., Ltd. | Powder weighing mixer and method thereof |
| JPH06190263A (en) * | 1992-12-24 | 1994-07-12 | Tsukishima Kikai Co Ltd | Compounding device of powdery raw material substance |
| CN2181682Y (en) * | 1993-05-24 | 1994-11-02 | 于清江 | computer quantitative packing scale |
| JP2003081442A (en) * | 2001-09-17 | 2003-03-19 | Nisshinbo Ind Inc | Device and method for supplying powdery material |
| EP1698868A1 (en) * | 2005-03-03 | 2006-09-06 | Cabinplant International A/S | Weighing arrangement |
| CN201128858Y (en) * | 2007-11-12 | 2008-10-08 | 镇江华晨华通路面机械有限公司 | Powder metering control device |
| CN101871806B (en) * | 2010-06-29 | 2012-04-18 | 江苏亿金环保科技股份有限公司 | Weighing feeder |
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