CN105666701B - A kind of proportioning process of asphalt blending station - Google Patents
A kind of proportioning process of asphalt blending station Download PDFInfo
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- CN105666701B CN105666701B CN201610070095.3A CN201610070095A CN105666701B CN 105666701 B CN105666701 B CN 105666701B CN 201610070095 A CN201610070095 A CN 201610070095A CN 105666701 B CN105666701 B CN 105666701B
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- aggregate
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- weigh
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/0404—Proportioning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/0404—Proportioning
- B28C7/0418—Proportioning control systems therefor
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Road Paving Machines (AREA)
Abstract
Patent of the present invention is related to road engineering machinery field, and in particular to the proportioning process of the hot aggregate of asphalt blending station.The present invention judges whether material is sufficient in storing material storehouse according to the increased speed of material in batch weigher；If a certain material is not enough, the material quantity weighed is recorded, the weighing of the material is terminated, the weighing of next material is automatically converted to, after all sufficient material weighings terminate, be further continued for weighing the material.When weighing unclassified stores, the material increase in bin meets dispensing requirements quantity, can be rapidly completed this dispensing, so as to improve production efficiency；Material suspended amount is maintained within a certain range, it is to avoid material shortcoming suspension amount diminish caused by weigh deviation increase, improve weighing precision.
Description
Technical field
Patent of the present invention is related to road engineering machinery field, and in particular to asphalt blending station proportioning process according to actually matching somebody with somebody
The method of material situation adjustment.
Background technology
Intermittent asphalt concrete blending station is the necessary equipment for building high-grade highway, is manufactured and designed as pitch is mixed and stirred
The development of technology, the normal work that user has ensured equipment via pursuing is changed into the quality and production efficiency for pursuing equipment, intelligence
Can control technology popularization and application, make asphalt mixing plant from automation develop to intelligent direction, the market demand be high efficiency,
The intelligent, asphalt mixing apparatus of high-quality.
Intermittent asphalt concrete mixing station is a kind of structure and the more complicated equipment of production technology, finished product material typically by
A variety of aggregates, pitch and powder are formed according to certain recipe requirements by weighing and stirring.Aggregate is generally more than 4 kinds, process
Belt feeder is slightly matched somebody with somebody, heating, drying, the aggregate for being sieved into different size, and is stored in hot aggregate storage bin, is made for weighing dispensing
With.During dispensing, according to ratio requirement and dispensing order, the aggregate stored in hot aggregate storage bin puts into aggregate and claims interior weighing to match somebody with somebody successively
Material.
Because the composition of cold aggregate is unstable, the ratio that hot aggregate in hot aggregate storage bin is assigned to after screening often becomes
Change, and the proportioning of bituminous concrete is fixed, this results in some aggregate bin of a certain moment and owes material, different bone of another moment
Feed bin owes material.It is difficult to control to because raw material enter field quality, raw material are stacked, there is segregation phenomenon in handling process, cold burden enters
It can not ensure consistent to the consumption with hot aggregate；The regulation of the cold burden amount of feeding is also required to postpone longer time, gets to heat
Aggregate bin, the feeding that the deficient material of hot aggregate can not be by adjusting cold burden is solved immediately.Existing distribution is aggregate door one
Open mode is directly in, until the material of shortcoming reaches proportioning weight demands, the door is turned off, carries out the workflow of next step
Journey.Due to the shortcoming of material, the production time is added, production efficiency is reduced.Simultaneously because the shortcoming of material, the flow velocity of material becomes
Small, suspension amount diminishes, and suspension amount offset is compensated according to predicted value during weighing, causes mixing ratio error larger, influences pitch
The quality of concrete.While material is waited, other aggregates are also ceaselessly increasing, other hot aggregate storage bins may be made full so as to
Aggregate is overflowed, causes to waste and pollutes.
The content of the invention
For problems of the prior art, the invention provides a kind of new weighing technique, hot bone can be both solved
The problem of material short time shortcoming causes, it is not required that change the mechanical structure of existing equipment, it is to avoid increase cost.
This technology method is as follows：
A kind of proportioning process of high efficiency asphalt blending station, it is characterized in that, comprise the following steps：
Step one, in the blending process of aggregate, detect whether the aggregate of current institute's dispensing is short of；When aggregate is not owed normally
When lacking, the dispensing of the aggregate is completed, step 3 is continued executing with；
Step 2, when aggregate is short of, then judges to owe whether weighing for aggregate bin of material interrupts, if the aggregate bin is current complete
Compared into value of weighing with interrupting setting value, if the value that completed to weigh continues the dispensing of the aggregate more than setting value is interrupted, until
The aggregate completes dispensing, automatically switches to a kind of dispensing of lower aggregate；If the value that completed to weigh is interrupted less than setting value is interrupted
The weighing of the aggregate, and the current aggregate gravimetric value for having weighed completion is recorded, set to weigh and interrupt mark；
Step 3, according to the order of dispensing, carries out other kinds of aggregate batching；
Repeat step one, step 2, complete the weighing dispensing of other aggregates；
Step 4, restarts the weighing dispensing for interrupting aggregate；
After the completion of all aggregates are all weighed, check to weigh and interrupt mark, detect weighing and interrupt after mark, extract
Weigh the aggregate gravimetric value completed and be compared with the recipe requirements value of the aggregate of this in formula, i.e., subtracted with recipe requirements value
Through weighing the aggregate gravimetric value completed, the value to be weighed after being restarted, the corresponding aggregate bin of opening, with the value to be weighed after
It is continuous to weigh, complete the weighing of the aggregate.
In step one, judge whether aggregate is short of by the length of dispensing time：By dispensing time of current aggregate with
The aggregate normal dispensing time is compared, if the dispensing time of the aggregate exceeds the normal dispensing time, judges that the aggregate is owed
Lack.
In step one, judge whether aggregate is short of by the flow velocity of aggregate：Flow velocity then judges the bone less than predetermined flow rate value
Material shortcoming.
In step one, the weight change for claiming internal unit interval aggregate is detected by Weighing system, current aggregate is calculated
Flow speed value, is compared the flow speed value and predetermined flow rate value, if the flow speed value is less than predetermined flow rate value, judges that the aggregate is owed
Lack.
If thering is more than two kinds of aggregate to weigh to interrupt, the weighing dispensing for interrupting aggregate is restarted successively according to the order of interruption.
In blending process, during every kind of aggregate is weighed, weigh the number of times interrupted and be up to once, it is otherwise excessive in
Disconnected number of times reduces production efficiency on the contrary.
The beneficial effect that the present invention is reached：
The present invention only changes dispensing flow and weighs technique, does not change any mechanically and electrically structure, does not increase
Plus hardware cost；Blending process is automatically performed detection by system, interrupts weighing and restart to weigh, it is not necessary to manual intervention,
Solve because material is temporarily short of the problems such as low production efficiency caused, flash and level match somebody with somebody undesirable.
Brief description of the drawings
Fig. 1 is adjustment dispensing sequential flowchart；
Fig. 2 feed proportioning system structure charts.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating the present invention
Technical scheme, and can not be limited the scope of the invention with this.
In blending process, the dispensing situation of aggregate is detected, judges whether aggregate is short of, such as aggregate is normal, continues the bone
The dispensing of material, until dispensing is completed；Such as this kind aggregate shortcoming, then temporarily interrupt the dispensing of the aggregate, close the aggregate corresponding
Aggregate door, records the aggregate weight weighed, and setting dispensing does not complete mark；Continue to weigh it according to recipe requirements order
His aggregate；Finished until other kinds of aggregate is weighed, the aggregate bin for now lacking material has stored certain aggregate, and system is therefrom
The disconnected weight point weighed, starts again at weighing, until the value of formula setting, terminates the weighing of this aggregate.Workflow is such as
Shown in Fig. 1.
Aggregate weighing hopper 3 uses electronic load cell 4, and the weight signal of aggregate weighing hopper 3 is converted to electric signal, passes through
Cross transmitter and be converted to master die analog quantity signal or data signal, be sent to intelligent controller, controller is by computing and foundation
Result of calculation controls the opening and closing of the hot aggregate storage bin door 2 of many storehouse aggregate bins 1, so as to control hot aggregate batching, as shown in Figure 2.
Implementation steps：
Whether the first step, detection aggregate is short；
Judged by the length of dispensing time, i.e., during by the dispensing time of current a certain aggregate with the normal dispensing of the aggregate
Between compare, if beyond the normal dispensing time, dispensing performance difference is more, then it is assumed that the material is short of.
Detect whether aggregate is short, can also be judged by the flow velocity of aggregate, flow velocity is then sufficient greatly, and flow velocity is less than certain value
Then think shortcoming.Specific implementation procedure is that Weighing system detection claims internal unit interval weight change, calculates current aggregate
Flow speed value, the fast preset value of the flow speed value and deficient stream is compared, less than preset value, then it is assumed that owe material.
Whether second step, judge the aggregate weighing value for owing material aggregate bin close to formula value；
Feed proportioning system detects that a certain aggregate bin owes material, and the current dispensing value that completed is compared with interruption setting value, if
Dispensing value is completed and has been more than interruption setting value, then continued the aggregate batching, until the aggregate is completed, automatically switch to another bone
The dispensing of material.The interruption setting value is normally close to recipe requirements value.If completion value, which is less than, interrupts setting value, the system break material
Weigh, close the door of the aggregate bin, record the current aggregate gravimetric value for having weighed completion（Weigh completion value）, set
Weigh and interrupt mark.
3rd step, carries out other kinds of proportioning materials；
According to dispensing requirements order, the weighing dispensing of other aggregates is completed.When weighing other aggregates, first is equally performed
The content of step and second step.
4th step, restarts the weighing dispensing for interrupting material；
Other aggregates are all weighed and completed（The material containing interruption）After, systems inspection weighs interrupt identification, detects interruption
After mark, extract the weight of material weighed and compared with recipe requirements value, calculate the weighing value after restarting, i.e., with formula value
Subtract and weigh the value that the acquisition of completion value will be weighed.Aggregate door is opened, according to weighing algorithm（Suspension amount compensation etc.）, to claim
The value of amount continues to weigh, and completes the weighing of the aggregate.
If having the aggregate of more than two to weigh to interrupt, weighing is restarted successively according to the order of interruption.
In blending process, every kind of material weighing is interrupted for several times at most once, and production efficiency is otherwise reduced on the contrary.
The present invention is implemented for intelligent asphalt mixing plant, and the weighing dispensing of blending station is automatic weighing and automatic blending.
To realize this technique, it is desirable to which the minimalist configuration of the feed proportioning system of asphalt blending station is as follows：
As shown in Fig. 2 the implementation case includes the emptying door for having cylinder to control under 5 hot aggregate storage bins, each aggregate bin；Bone
There is aggregate weighing hopper 3 below feed bin, aggregate weighing hopper 3 installs 4 tension load cells 4, the signal transmission of weighing sensor 4
To intelligent controller, controller controls the switch of the door 2 of aggregate bin 1, so as to control the beginning and stopping of dispensing.
Assuming that the value of 1 to No. 5 aggregate weight of recipe requirements is respectively A1, A2, A3, A4, A5, dispensing order is followed successively by No. 1
To No. 5；Using blanking velocity detection hot aggregate storage bin in material whether owe material, blanking velocity threshold values be respectively B1, B2, B3, B4,
B5, it is respectively C1, C2, C3, C4, C5 to interrupt and weigh threshold values.
Intelligent controller is first turned on the door of No. 1 aggregate bin according to recipe requirements, starts No. 1 aggregate batching；In dispensing
During, the change of weight of material in scale hooper in the unit interval is detected, and in this, as dispensing speed B11（Can be multiple
It is average）, dispensing speed B11 and blanking velocity threshold values B1 is compared in blending process, if dispensing speed B11 is not less than blanking
Speed threshold B1, continues material weighing；If dispensing speed B11 is less than blanking velocity threshold values B1, controller is having weighed No. 1 bone
Material weight C11 and interruption weigh threshold values C1 and compared, if No. 1 aggregate weight C11, which is not less than to interrupt, weighs threshold values C1, continuation material claims
Amount is finished until No. 1 aggregate is weighed.If No. 1 aggregate weight C11, which is less than to interrupt, weighs threshold values C1, the weighing of No. 1 aggregate is interrupted,
No. 1 aggregate weight C11 is recorded, sets and interrupts mark D1, then open No. 2 aggregate bins, starts to weigh No. 2 aggregates.Equally successively
Complete the weighing of other aggregates.Assuming that other storehouse aggregates are all sufficient, weigh and complete after No. 5 aggregates, intelligent controller detects interruption
D1 is identified, No. 1 aggregate weight A1-C11 that will be weighed is calculated, No. 1 aggregate bin door is again turned on, according to normal distribution
Complete the dispensing of No. 1 aggregate.Certain time is needed due to weighing 2 to No. 5 aggregates, has now been accumulated in an aggregate bin quite
Material, i.e., the weighing of unclassified stores is completed within the time that should wait No. 1 aggregate, so as to save the dispensing time, is improved
Operating efficiency.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and deformation can also be made, these improve and deformed
Also it should be regarded as protection scope of the present invention.
Claims (6)
1. a kind of proportioning process of asphalt blending station, it is characterized in that, comprise the following steps：
Step one, in the blending process of aggregate, detect whether the aggregate of current institute's dispensing is short of；When aggregate is not short of normally
When, the dispensing of the aggregate is completed, step 3 is continued executing with；
Step 2, when aggregate is short of, then judges to owe whether weighing for aggregate bin of material interrupts, if the aggregate bin has currently completed to claim
Weight values are compared with interrupting setting value, if the value that completed to weigh continues the dispensing of the aggregate, until the bone more than setting value is interrupted
Material completes dispensing, automatically switches to a kind of dispensing of lower aggregate；If the value that completed to weigh interrupts the bone less than setting value is interrupted
The weighing of material, and the current aggregate gravimetric value for having weighed completion is recorded, set to weigh and interrupt mark；
Step 3, according to the order of dispensing, carries out other kinds of aggregate batching；
Repeat step one, step 2, complete the weighing dispensing of other aggregates；
Step 4, restarts the weighing dispensing for interrupting aggregate；
After the completion of all aggregates are all weighed, check to weigh and interrupt mark, detect weighing and interrupt after mark, extraction has been weighed
The aggregate gravimetric value of completion is simultaneously compared with the recipe requirements value of the aggregate of this in formula, i.e., subtracted and claimed with recipe requirements value
The aggregate gravimetric value completed is measured, the value to be weighed after being restarted opens the corresponding aggregate bin, continue to claim with the value to be weighed
Amount, completes the weighing of the aggregate.
2. the proportioning process of asphalt blending station according to claim 1, it is characterized in that, in step one, pass through the dispensing time
Length judge whether aggregate is short of：It is compared by the dispensing time and the aggregate normal dispensing time of current aggregate, if
The dispensing time of the aggregate exceeds the normal dispensing time, then judges that the aggregate is short of.
3. the proportioning process of asphalt blending station according to claim 1, it is characterized in that, in step one, pass through the stream of aggregate
Speed judges whether aggregate is short of：Flow velocity then judges that the aggregate is short of less than predetermined flow rate value.
4. the proportioning process of asphalt blending station according to claim 3, it is characterized in that, in step one, examined by Weighing system
The weight change for claiming internal unit interval aggregate is surveyed, the flow speed value of current aggregate is calculated, the flow speed value and predetermined flow rate value
It is compared, if the flow speed value is less than predetermined flow rate value, judges that the aggregate is short of.
5. the proportioning process of asphalt blending station according to claim 1, it is characterized in that, if there is two or more aggregates to weigh
Interrupt, restart the weighing dispensing for interrupting aggregate successively according to the order of interruption.
6. the proportioning process of asphalt blending station according to claim 1, it is characterized in that, in blending process, every kind of aggregate claims
During amount, weigh the number of times interrupted and be up to once.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610070095.3A CN105666701B (en) | 2016-02-02 | 2016-02-02 | A kind of proportioning process of asphalt blending station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610070095.3A CN105666701B (en) | 2016-02-02 | 2016-02-02 | A kind of proportioning process of asphalt blending station |
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| CN105666701A CN105666701A (en) | 2016-06-15 |
| CN105666701B true CN105666701B (en) | 2017-09-15 |
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| CN110697100B (en) * | 2017-09-19 | 2021-04-02 | 中国计量大学 | Controller of straight-falling type multi-component material blanking device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08170304A (en) * | 1994-12-16 | 1996-07-02 | Nikko Co Ltd | Control method of aggregate supply in asphalt plant |
| CN2579938Y (en) * | 2002-03-08 | 2003-10-15 | 陈启宗 | Aggregate charge mixture metering device for continuous pitch concrete stirring equipment |
| CN102330403A (en) * | 2011-07-14 | 2012-01-25 | 无锡雪桃集团有限公司 | Aggregate weighing system for asphalt mixture |
| CN102330402A (en) * | 2011-07-14 | 2012-01-25 | 无锡雪桃集团有限公司 | Hot aggregate proportioning device of bituminous mixture blending equipment |
| CN102778276A (en) * | 2012-07-27 | 2012-11-14 | 福建南方路面机械有限公司 | Dynamic tracking measurement method for target asphalt quantity of asphalt mixing equipment |
| CN103425115A (en) * | 2013-09-03 | 2013-12-04 | 中交隧道工程局有限公司 | Intermittent production graduation real-time monitoring system and method of hot-mix asphalt mixture |
-
2016
- 2016-02-02 CN CN201610070095.3A patent/CN105666701B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08170304A (en) * | 1994-12-16 | 1996-07-02 | Nikko Co Ltd | Control method of aggregate supply in asphalt plant |
| CN2579938Y (en) * | 2002-03-08 | 2003-10-15 | 陈启宗 | Aggregate charge mixture metering device for continuous pitch concrete stirring equipment |
| CN102330403A (en) * | 2011-07-14 | 2012-01-25 | 无锡雪桃集团有限公司 | Aggregate weighing system for asphalt mixture |
| CN102330402A (en) * | 2011-07-14 | 2012-01-25 | 无锡雪桃集团有限公司 | Hot aggregate proportioning device of bituminous mixture blending equipment |
| CN102778276A (en) * | 2012-07-27 | 2012-11-14 | 福建南方路面机械有限公司 | Dynamic tracking measurement method for target asphalt quantity of asphalt mixing equipment |
| CN103425115A (en) * | 2013-09-03 | 2013-12-04 | 中交隧道工程局有限公司 | Intermittent production graduation real-time monitoring system and method of hot-mix asphalt mixture |
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| CN105666701A (en) | 2016-06-15 |
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Effective date of registration: 20180802 Address after: 221000 10 Tuo Lan Shan Road, Xuzhou economic and Technological Development Zone, Xuzhou, Jiangsu Patentee after: Xuzhou Xugong Maintenance Machinery Co., Ltd. Address before: 221004 10 Tuo Lan Shan Road, Xuzhou Economic Development Zone, Jiangsu Patentee before: Xuzhou Xugong Road Construction Machinery Co., Ltd. |
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