CN201392234Y - Material metering control system of asphalt mixing equipment - Google Patents

Material metering control system of asphalt mixing equipment Download PDF

Info

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
Authority
CN
China
Prior art keywords
control system
plc
metering control
material metering
sensor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN200920089816U
Other languages
Chinese (zh)
Inventor
王志兴
王振涛
刘风松
王振生
曹红梅
徐瑞霞
陈晓宁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NANYANG YALONG ROAD CONSTRUCTION MACHINERY CO Ltd
Original Assignee
NANYANG YALONG ROAD CONSTRUCTION MACHINERY CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NANYANG YALONG ROAD CONSTRUCTION MACHINERY CO Ltd filed Critical NANYANG YALONG ROAD CONSTRUCTION MACHINERY CO Ltd
Priority to CN200920089816U priority Critical patent/CN201392234Y/en
Application granted granted Critical
Publication of CN201392234Y publication Critical patent/CN201392234Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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

Pitch mix equipment material metering control system
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.
CN200920089816U 2009-04-24 2009-04-24 Material metering control system of asphalt mixing equipment Expired - Fee Related CN201392234Y (en)

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 (2)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
CN102107188B (en) Automatic weighing and sorting machine
CN102073071B (en) Fully automatic and high-precision dust and sand collector
CN201615848U (en) Full-automatic and high-precision sand-dust collector
CN102538682B (en) Automatic tester for valve lift and timing phase of engine
CN202453059U (en) Acquisition and data processing system for coal feed quantity of coal feeder
CN102698644B (en) Device and method for intelligently metering and monitoring blending process for mixing plant
CN101625383A (en) On-line monitoring device for power quality
CN204604588U (en) A kind of batching system preparing Dutch brick
CN104227848B (en) A kind of cement sand and gravel mixing apparatus network intelligence control system
CN201392234Y (en) Material metering control system of asphalt mixing equipment
CN100446951C (en) Microcomputer production control system for concrete
CN102967150B (en) Energy-saving and environment-friendly feeding control system for vertical laterite-nickel ore smelting furnace controlled by PLC
CN201514267U (en) Dynamic metering system of stabilized soil agitating equipment
CN203448051U (en) Automatic batching device
CN203578672U (en) Liquid material control device for sand mixer in furan resin molding process
CN202615213U (en) Brick tile brick-making machine integrated control system
CN201680889U (en) DCS measuring instrument device
CN204546773U (en) A kind of long distance control system of cylindrical housings mortar mixer
CN203037412U (en) Calibrating apparatus
CN201301302Y (en) Coke oven coal car fed-coal controlling system
CN201825543U (en) Variable-frequency weighing device
CN201888228U (en) Feed additive raw material adding control system
CN202318863U (en) Lateral feeder
CN102514909B (en) Intelligent-Agent-based discontinuous quantitative screw feeding method and system
CN202033074U (en) Silo level measuring device

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