CN101672686B - Device for measuring weight of liquid asphalt - Google Patents
Device for measuring weight of liquid asphalt Download PDFInfo
- Publication number
- CN101672686B CN101672686B CN200910044482XA CN200910044482A CN101672686B CN 101672686 B CN101672686 B CN 101672686B CN 200910044482X A CN200910044482X A CN 200910044482XA CN 200910044482 A CN200910044482 A CN 200910044482A CN 101672686 B CN101672686 B CN 101672686B
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- Prior art keywords
- asphalt
- pitch
- piston
- metering cylinder
- liquid
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- Expired - Fee Related
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Abstract
The invention discloses a device for measuring the weight of liquid asphalt, comprising an asphalt box for providing the liquid asphalt, an asphalt metering cylinder for measuring the liquid asphalt and discharging the liquid asphalt under a high pressure, a driving cylinder for driving a piston of the asphalt metering cylinder and a PLC. The asphalt box is connected with the asphalt metering cylinder by a switch valve, the piston or a piston rod of the asphalt metering cylinder is provided with a displacement sensor, the displacement sensor is connected with the PLC, and the PLC controller controls the driving cylinder by signals of the displacement sensor. The invention has simple structure and can reliably work at a stronger vibration state and various placed positions so as to guarantee the measurement accuracy of the liquid asphalt and the quality of the asphalt concrete.
Description
Technical field
The present invention and road building machine field relate in particular to a kind of equipment that is used for measuring weight of liquid asphalt.
Background technology
The pitch measuring apparatus that adopts on the asphalt mixing apparatus mainly contains two kinds now, and a kind of is to adopt weight sensor (being commonly called as piezoelectric sensor) and computer technology, and a kind of is to adopt weight displacement sensing and computer technology.These two kinds of Weighing devices are the static weighing technology, when the asphalt mixing apparatus is worked, because mixing apparatus work produces must vibrate and the difference of mixing apparatus putting position all makes the static weighing measuring accuracy greatly descend, the precision specific energy is uncontrollable below 2%, and is bigger to the quality fluctuation influence of asphalt.
Summary of the invention
The object of the present invention is to provide a kind of equipment that is used for measuring weight of liquid asphalt that can effectively improve measuring accuracy.
This equipment that is used for measuring weight of liquid asphalt provided by the invention, comprise the pitch case that is used to provide liquid bitumen, also comprise be used to measure liquid bitumen and with the pitch metering cylinder of liquid bitumen high pressure output, be used to drive driving cylinder, the PLC controller of the piston of pitch metering cylinder, described pitch case is connected with the pitch metering cylinder by switch valve, on the piston of described pitch metering cylinder or the piston rod displacement transducer is housed, this displacement transducer is connected with the PLC controller, by the signal controlling described driving cylinder of PLC controller by displacement transducer.
Temperature owing to heated liquid bitumen in construction is a steady temperature, its density is certain, the pitch metering cylinder extracts weight of liquid asphalt from the pitch case and can measure by the volume that pitch occupies described metering cylinder, the present invention around this principle is installed in range sensor on the piston or piston rod of pitch power metering cylinder, receive the gravimetric value of input when the PLC controller, to be converted to the distance to a declared goal that piston should move and stored according to the corresponding density of asphalt temperature at that time, driving cylinder drives the piston motion of pitch metering cylinder, displacement transducer is sent to PLC with the real time data of piston shift position, when the data of position transducer output conform to the data of PLC controller, illustrate that the pitch weight in the pitch metering cylinder has reached the input weight value, the PLC controller issued instructions to Hydraulic Station controlling and driving cylinder and stopped action this moment.Thereby realize the output quantity of control liquid bitumen, make measuring accuracy not be subjected to the restriction of installation site and complete machine putting position, can not change measuring accuracy because of complete machine oscillation, the weight of liquid asphalt error in dipping is controlled at below 0.2%, thereby guarantees that the asphalt mixing ratio error is controlled in 0.5%.The present invention is simple in structure, no matter is under than the strong vibration state, still under various putting position states, all can work reliably, guarantees the accuracy of liquid bitumen metering, has guaranteed asphalt concrete quality.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
As can be seen from Figure 1, this equipment that is used for measuring weight of liquid asphalt provided by the invention, comprise pitch case 1, pitch metering cylinder 2, driving cylinder 3, pitch case 1 is connected with pitch metering cylinder 2 by switch valve 11, the piston of pitch metering cylinder 2 is driven by driving cylinder 3, displacement transducer 4 is housed on the piston of pitch metering cylinder 2 or the piston rod, and this displacement transducer 4 is connected with PLC controller 5, and PLC controller 5 is by Hydraulic Station 6 controlling and driving cylinders 3.
When the present invention uses, the operator will need the pitch emphasis numerical quantity input PLC controller 5 of usefulness earlier, PLC controller 5 is converted into the distance to a declared goal that piston should move in the pitch metering cylinder according to the density of liquid bitumen with this gravimetric value and stores, press start key then, the piston that driving cylinder 3 begins to drive the pitch metering cylinder moves right the liquid bitumen in the suction pitch case, displacement transducer 4 on the piston constantly is sent to the PLC controller with the position of piston information data, when the real time data that transmits when data in the PLC controller conform to, PLC sends instruction to Hydraulic Station 6 makes driving cylinder stop to move.Finish the metering of asphalt content this moment.When the driving cylinder inverted running, the piston in the pitch metering cylinder 2 is pushed away pitch, mixes and stirs with compound.The present invention is very accurate to the metering of pitch, and the asphalt mixing ratio error is controlled in 0.5%.
Claims (1)
1. equipment that is used for measuring weight of liquid asphalt, comprise the pitch case (1) that is used to provide liquid bitumen, it is characterized in that also comprising and be used to measure liquid bitumen and the pitch metering cylinder (2) of liquid bitumen high pressure output, be used to drive the driving cylinder (3) of the piston of pitch metering cylinder, PLC controller (5) and Hydraulic Station (6), described pitch case is connected with the pitch metering cylinder by switch valve (11), displacement transducer (4) is housed on the piston of described pitch metering cylinder or the piston rod, this displacement transducer (4) is connected with PLC controller (5), and described PLC controller (5) is controlled described driving cylinder (3) by described Hydraulic Station (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910044482XA CN101672686B (en) | 2009-09-30 | 2009-09-30 | Device for measuring weight of liquid asphalt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910044482XA CN101672686B (en) | 2009-09-30 | 2009-09-30 | Device for measuring weight of liquid asphalt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101672686A CN101672686A (en) | 2010-03-17 |
| CN101672686B true CN101672686B (en) | 2011-04-13 |
Family
ID=42020009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910044482XA Expired - Fee Related CN101672686B (en) | 2009-09-30 | 2009-09-30 | Device for measuring weight of liquid asphalt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101672686B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359810A (en) * | 2011-07-14 | 2012-02-22 | 无锡雪桃集团有限公司 | Pulse type metering batching device for asphalts |
| CN102519758B (en) * | 2011-12-15 | 2013-07-24 | 长安大学 | Automatic asphalt measuring device |
| CN104589513B (en) * | 2015-01-27 | 2016-11-09 | 北京元泰达环保科技有限公司 | A kind of three grades of quick metering devices for Binder Materials |
| CN104614019B (en) * | 2015-01-27 | 2017-05-10 | 北京元泰达环保科技有限公司 | metering device for liquid |
| CN105542193B (en) * | 2016-01-30 | 2018-04-20 | 山东大山路桥工程有限公司 | A kind of emulsified modified asphalt experimental machine |
| CN105807710A (en) * | 2016-04-29 | 2016-07-27 | 福建铁拓机械有限公司 | Quantitative feeding device and method for asphalt foaming experiment |
| CN111323105B (en) * | 2020-05-01 | 2023-03-28 | 天津海阔天通化工有限公司 | Anti-cooling asphalt metering device |
| CN111470196B (en) * | 2020-05-01 | 2022-12-06 | 广东德茂建设工程有限公司 | Anti-cooling asphalt metering method |
-
2009
- 2009-09-30 CN CN200910044482XA patent/CN101672686B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101672686A (en) | 2010-03-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20130930 |