CN201392234Y - Material metering control system of asphalt mixing equipment - Google Patents
Material metering control system of asphalt mixing equipment Download PDFInfo
- Publication number
- CN201392234Y CN201392234Y CN200920089816U CN200920089816U CN201392234Y CN 201392234 Y CN201392234 Y CN 201392234Y CN 200920089816 U CN200920089816 U CN 200920089816U CN 200920089816 U CN200920089816 U CN 200920089816U CN 201392234 Y CN201392234 Y CN 201392234Y
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- metering control
- material metering
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Abstract
The utility model discloses a material metering control system of an asphalt mixing equipment, belonging to the technical field of material metering control and consisting of a sensor, a sensor wiring box, a PLC and a PC machine. The material metering control system is characterized by also comprising a weighing meter; the sensor is connected with the weighing meter by the sensor wiring box; the PLC is connected with the weighing meter so as to directly read the value of the weighing meter; and the PLC is connected with the PC machine. Compared with the prior art, the material metering control system has good stability, fast response speed and high metering precision, meets the construction requirements of high-grade roads, and is applicable to production under more rugged working environment in the fields.
Description
Technical field
The utility model belongs to material metering control technology field, is specifically related to a kind of bulk material accurate measurement control system of pitch mix equipment.
Background technology
Bulk material storage measuring apparatus is in pitch mix industry widespread, and this apparatus structure mainly is made up of feed bin, emptying door, emptying door drive unit, measuring chute.What of blowing the folding of emptying door drive unit may command emptying door regulate, and its underpart is a measuring apparatus, and control system is by the control to the emptying door folding time, can realize what measure control of material.The emptying door of this kind structure is because of the needs of throughput rate, and general blowing cross section is provided with bigger, and blowing, metering time are shorter, and material is bigger to the momentum that measuring chute produces, and error in dipping is bigger than normal.If by reducing dispensing speed, reduce momentum and improve measuring accuracy, will prolong weighing cycle and influence the production efficiency of entire equipment.Existing pitch mix equipment adopts sensor, transmitter, AD module, PC and PLC mostly to the control of metering section, carries out data acquisition process.This control mode weighing is disposable metering, and the material thin powder of particularly healing, momentum are bigger; Sensor signal will be passed through terminal box, signal transmitting device simultaneously, and the A/D module is imported PLC at last into, and PLC is connected with PC, because many through intermediate link, the signal transmitting cycle is longer, and control output has hysteresis phenomenon; And transmitter, A/D module are subjected to external disturbance easily because of the reason of self structure, and not enough to the signal conversion processes precision, have also brought certain negative effect for the accuracy of metering.Pitch mix equipment is in the construction of high-grade highway, measuring accuracy to powder is had relatively high expectations, reliability, stability requirement to this apparatus control system are higher relatively, thereby relatively produce under the bad working environment in the open air to adapt to equipment, this also is that pitch mix equipment is wiped away technical matters to be solved.
The utility model content
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of metering system good stability is provided, the pitch mix equipment material metering control system that reaction velocity is fast, measuring accuracy is high.This metering control system overcomes the technical matters that existing system poor stability, reaction velocity are slow, measurement deviation exceeds standard, and makes pitch mix equipment can both finish the stirring operation in high quality under the operating mode of various complexity.
For achieving the above object, the technical solution of the utility model is: this pitch mix equipment material metering control system has sensor, sensor terminal box, PLC and PC and forms, it is characterized in that: also have weighing instrument, described sensor connects weighing instrument by the sensor terminal box, PLC is connected and directly reads weighing instrument numerical value on the weighing instrument, and PLC is connected with PC.
Adopt the beneficial effect of technique scheme: adopt reliability height, stable strong weighing instrument, replace original transmitter and A/D module by it, PLC can directly read weighing instrument numerical value, carry out data processing and control output, reduced intermediate link, thereby reduced data acquisition and switching time, reduced the time error of material control system, improved measuring accuracy.Simultaneously the reaction velocity of weighing instrument own reaches (100 times/second) soon, gauge internal resolution height (reaching 16000000), and it adopts full metal jacket, has extremely strong anti-electromagnetism, capability of resistance to radiation.By cutting down the number of intermediate links, and utilize the rapid reaction and the high anti-jamming capacity of weighing instrument, on performance, just can improve the accuracy requirement of control system greatly, to material carry out dynamically, the accurate data collection, satisfied strict process requirement in the production reality.This metering control system can be set adjustable lower limit and lower limit open and close door time (suppose that lower limit is that 100kg, the lower limit time of opening the door are 1 second, the lower limit lockup is 1.5 seconds) to every kind of material according to producing actual needs.When lower limit reaches compound condition (when this material claims that again 100kg just satisfies condition), feed bin Men Zexian closes, and PLC calculates weighing data; If weighing numerical value is less than setting numerical value, the feed bin door open 1 second, closed 1.5 seconds, flash action continuously, material is interrupted falls, the then continuous symmetrical numerical quantity of PLC calculates, and equals to set numerical value until weighing numerical value.Door flashes action continuously in metering process like this, has significantly reduced the thing amount of flying upward when the feed bin door directly carries out switch motion in the air, reduces the momentum value of metering, has improved the precision of metering.Compared with prior art, this metering control system adopts microcomputer and the dual monitoring of weighing instrument, carries out Automatic Control with import PLC, and simple to operate, objective interface, reaction velocity is fast, interference rejection ability is strong, stable and reliable operation, design is controlled in flashing of metering section, makes metering more accurate.Through the actual use situation, interface monitoring, the metering of thing amount, data processing etc. all met designing requirement, ensured the production of high standard, high quality asphalt compound, and no waste material produces, improve the mix quality of asphalt greatly, obtained favorable social and economic benefits.
Description of drawings
Below in conjunction with accompanying drawing specific embodiment of the utility model is described in further detail.
Fig. 1 is the structural representation of existing pitch mix equipment material measuring device.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is existing pitch mix equipment material metering control system block scheme.
Fig. 4 is the utility model pitch mix equipment material metering control system block scheme.
Embodiment
Existing pitch mix equipment material measuring device as shown in Figure 1, 2 is made up of feed bin 5, emptying door 4, emptying door drive unit, measuring chute 3.The emptying door drive unit is made of rolling bearing units 1, connecting rod 2, rotating shaft 6, cylinder 7, the folding of emptying door drive unit may command emptying door 4, regulate what of blowing, its underpart is a measuring apparatus, metering control system is by to the control of emptying door folding time, can realize what measure control of material.Existing as shown in Figure 3 pitch mix equipment material metering control system block scheme, the signal transmission of sensor is successively by sensor terminal box, signal transmitting device, A/D module, PLC and PC, it is many to exist intermediate link, the signal transmitting cycle is longer, and control output has hysteresis phenomenon and is subjected to external disturbance easily.The utility model is to replace signal transmitting device and A/D module by weighing instrument as shown in Figure 4, sensor 8 is by sensor terminal box 9 connection reliability height, stable strong weighing instrument 10, PLC11 is connected and directly reads weighing instrument numerical value on the weighing instrument 10, and PLC11 is connected with PC 12.
Claims (1)
1, a kind of pitch mix equipment material metering control system, having sensor, sensor terminal box, PLC and PC forms, it is characterized in that: also have weighing instrument, described sensor connects weighing instrument by the sensor terminal box, PLC is connected and directly reads weighing instrument numerical value on the weighing instrument, and PLC is connected with PC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920089816U CN201392234Y (en) | 2009-04-24 | 2009-04-24 | Material metering control system of asphalt mixing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920089816U CN201392234Y (en) | 2009-04-24 | 2009-04-24 | Material metering control system of asphalt mixing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201392234Y true CN201392234Y (en) | 2010-01-27 |
Family
ID=41599055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920089816U Expired - Fee Related CN201392234Y (en) | 2009-04-24 | 2009-04-24 | Material metering control system of asphalt mixing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201392234Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102350259A (en) * | 2011-07-14 | 2012-02-15 | 无锡雪桃集团有限公司 | Layered wiring system of bituminous mixing plant |
| CN103453972A (en) * | 2012-11-12 | 2013-12-18 | 飞翼股份有限公司 | Material difference value weighing device based on filling |
| CN108798635A (en) * | 2018-08-13 | 2018-11-13 | 新疆广陆能源科技股份有限公司 | Wellbore cleans monitoring device |
-
2009
- 2009-04-24 CN CN200920089816U patent/CN201392234Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102350259A (en) * | 2011-07-14 | 2012-02-15 | 无锡雪桃集团有限公司 | Layered wiring system of bituminous mixing plant |
| CN102350259B (en) * | 2011-07-14 | 2013-09-04 | 无锡雪桃集团有限公司 | Layered wiring system of bituminous mixing plant |
| CN103453972A (en) * | 2012-11-12 | 2013-12-18 | 飞翼股份有限公司 | Material difference value weighing device based on filling |
| CN103453972B (en) * | 2012-11-12 | 2015-08-05 | 飞翼股份有限公司 | Based on the material difference value meausring apparatus of filling |
| CN108798635A (en) * | 2018-08-13 | 2018-11-13 | 新疆广陆能源科技股份有限公司 | Wellbore cleans monitoring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20100127 Termination date: 20120424 |