有关自动称重配料系统的中英文翻译.doc

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1、Automatic batching and weighing system system Now, along with the development of science and technology, Automatic batching and weighing system has been widely used in metallurgy, coal, chemicals, building material industry, etc. Automatic batching and weighing system can be set according to the inp

2、ut ratio and flow control of material flow, thereby achieve control of product quality and yield of the objective is to realize the automatic production process, and intelligent, enterprises scientific management, safe and stable production and energy consumption is the important technical means. Co

3、mputer control system in the production of ingredients used not only can improve the yield and quality ingredients and greatly reduce the labor intensity, and post to improve production efficiency.Belt batching system is a continuous totalizing automatic weighing instrument. It has played a critical

4、 role in coal, chemical industry, metallurgy, building materials, food and other sectors that are crucial to national economy and peoples livelihood. The cumulative control of some mixed materials batching is realized by batching scale. This accurate cumulative control can cut down the cost of manuf

5、acture, improve the quality of the product and enhance the efficiency of labor.Automatic batching and weighing system is a kind of integrating transportation, measuring, mixing in an online automatic weighing apparatus measured dynamic. This system consists of one or more ingredients belt scales, ca

6、n show not only transient flow and total amount of conveyor belt, can also according to the value of the instantaneous flow deviation to adjust to the size of the feed to flow, constitute a closer setting control system, and achieve constant flow of purpose. Along with the rapid development of indus

7、trial production, electronic belt scale increasing demand of burdening system, was widely applied in a pan of metallurgy, power, chemical industry, food industry etc of process control. At the same time, along with the computer technology and the rapid development of the automatic control technology

8、, the system application technology more advanced, more extensive, field can take the scheme is more agile diversity, and, due to the system often costly, users of the actual conditions are also different. Therefore, careful, choose a reasonable, perfect, economic solution appears especially importa

9、ntThe structures of the belt scales ingredients consists mainly of transmission mountings, weighing transducer speed sensor, scale, active roller, driven roller, conveyor belt conveyors, drag, adjusting devices, equipment etc. When the scattered in conveyor belt scale body through the material on th

10、e weighing scale body, the speed sensor and sensor signal and the weight of millivolt belt speed pulse signal through the junction box to strap balance meter.The overall design philosophy of the Automatic batching and weighing system of the belt is: Before the belt conveyer is put into operation, th

11、e settlement value of the flow of the supplies is established on the keyboard by the attenbant to carry on the belt. After the system is put into normal running, loading signal of the belt that the one-chip computer samples and the speed signal leaves, walk belt speed signal and belt instantaneous w

12、eight, unit of length is it can calculate out belt twinkling of an eye flow F of supplies to multiply (t) . The flow can be in charge of the number and show, offer the craft data to attenbant to consult in the twinkling of an eye. 8031 systems and then compare the actual value of the flow instead of

13、 the establishing value, calculate out controlling amount vi after PID regulates operation, and then change into the electric current and output the signal, and then enlarged and controlled leading the open angle of silicon controlled rectifier, realize regulating the function of the electricity ele

14、ctromechanical magnetism clutch excitation electric current of slippery difference, thus regulate the rotational speed of the slippery difference electrical machinery of executive body, enable transporting the flow of supplies on belts to stabilize in the adjacent place of settlement value as much a

15、s possible, have a good static index and dynamic performance.Automatic batching and weighing system is widely applied in industrial and agricultural production and social life in all areas. Especially the metallurgy, coal, chemicals, cement industries, often need to spread in the dynamic process of

16、belt conveyor, and continuous weigh on conveying the flow adjustment and control, accurate ratio.The quality control of ingredients directly relates to the enterprise can produce smoothly. If the quality of compound reach requirements, causing a waste of energy, raw materials, while influence the qu

17、ality of the products and productivity, and some of the important position of the ingredients for the production of mistakes even a accident. Therefore, the high precision and ingredients ingredients and how quickly the whole manufacturing restricts the product quality and yield response, so the qua

18、lity and yield of compounding process control give enough attention. Electronic says automatic batching system can be set according to the input ratio and flow control of material flow, thereby achieve control of product quality and yield of the objective is to realize the automatic production proce

19、ss, and intelligent, enterprises scientific management, safe and stable production and energy consumption is the important technical means. Computer control system in the production of ingredients used not only can improve the yield and quality ingredients and greatly reduce the labor intensity, and

20、 post to improve production efficiency. Because the system of production lines, with the same ingredients and composed of daytime belt says system for example. This system mainly consists of ingredients, instrument, electronic control frequency, industrial control computer cabinet, and monitoring an

21、d management software.1) ingredients electronic saidIngredients of electronic belt says the bulk materials through belt of automatic weighing and continuous accumulated, transportation and measuring two functions. Weighing part adopts resistance strain working principle, structure, roller leveraged

22、practical work, belt constant velocity measurement called by feeding speed regulating superior to change the material flow, this type of enterprises with more than say for production process control.2) meter controllerInstrumentation control including daytime belt says, each instrument meter from re

23、ceiving belt says the weight of the weighing transducer speed sensor signal and the changes of the belt speed pulse signal, calculate flow and accumulation. And will flow signals in 4-20 ma simulation current form, work-managing machine will flow for industrial computer signals and machine after com

24、parison, according to a certain value of output control rule 4-20 ma adjusting control signal, feeder, forming a single speed closed-loop control certain material flow, achieve the goal.3) inverter arkArk of the converter, the dynamic control switch from higher feeding motor control signalsThe rev.

25、Stop, simultaneously also accept four from polymerizing-kettle - 20 ma adjustment, to change the output signalPower supply of frequency, and control site 7 feeder speed. If the inverter power,To configure the cooling fan, to ensure the converter can work normally.4) industrial control computer and s

26、oftwareHuaShuo use polymerizing-kettle IPC - 610 # 14 industrial PC chassis frame 6179L length, configuration PCA - 512M memory and CPU card, with 80G hard disk, a PCL - 746 + 4 ports RS232 485 communication interface card 422, 2-4 1720U type PCI simulation output channel segregation, work-managing

27、machine as PC, through two-way communication interface RS485 with belt says, through RS232 instrument online communication interface with dynamic two-way the PLC control, analog output online control signal control feeding machine to flow, which constitute a complete system of the ingredients. Other

28、 vital industrial computer interface RS485 two-way communication, to prepare for and plant upper polymerizing-kettle communication.The main functions are monitoring software, according to the production of formula and yield target weighing process of automatic control, statistic data management and

29、weighing achieve print. System software has a variety of on-site control mode and the input, a formula of adapting to different engineering requirements, users can set alarm print time parameters, use the menu interface, easy to use, users can through the mouse or keyboard operate on the ingredients

30、, control and management system.The main components of the control system are belt scales, programmable controller, communication system design and monitoring software modules etc, electronic belt says the structure and working principle of below a specific instructions are not here, programmable co

31、ntroller using OMROM company CQM1H type module type programmable controller, configuration CQM1H - CPU21 - E type CPU module, PA203 CQM1 - power module, four CQM1-212 type 16 points I/O input module, 2-16 points OC222 CQM1 type of I/O output module, the system module points total 112. Each electroni

32、c belt says about the input signal is PLC belt running deviation switch alarm signal, belt skid alarm input, alarm, main belt running and site operation dish central/site selection, on-site control control feeding machine and belt conveyor start/stop, central control feeding machine and belt conveyo

33、r and stop signal, each electronic belt says about PLC output signal a belt running deviation indicator lights, startup, belt skid feeder, start signal of belt conveyor.Communication system design choices as PC software platform VB6.0 by use Basic6.0 Visual, with its friendly interface, easy to use,

34、 develop strong practicability etc, are widely used in both at home and abroad.Monitoring software module of the software is based on Windows 2000, operating system, and Basic6.0 Visual programming language, make Access2000 database management. Mainly used for system operation module which enter or

35、exit site control condition, operating, establish initialization, a new production tasks, keep the ingredients of the project, the next after each parameter can be automatically boot, enter the project, in order to prevent general people literally, set up the start-up system login function. Statemen

36、ts management module function is the first enter inquires, the operator can pages of all channels of historical data and browse ingredients, inquires according to the passage, when the date and time, divisions, data ingredients generate reports and print.On-site control module mainly used for settin

37、g engineering parameters, monitor and control field ingredients.Setting module for setting the initialization parameter ingredients and engineering. Namely, the time, the production of Numbers, initial placement, automatic reset manually/cumulative class, single/completion and other parameters said

38、belt.The structures of the belt scales ingredients consists mainly of transmission mountings, weighing transducer speed sensor, scale, active roller, driven roller, conveyor belt conveyors, drag, adjusting devices, equipment etc. When the scattered in conveyor belt scale body through the material on

39、 the weighing scale body, the speed sensor and sensor signal and the weight of millivolt belt speed pulse signal through the junction box to strap balance meter 3By feeding equipment materials to electronic belt scales, says the speed sensor weighing sensors and weighing and speed signal sent to wei

40、gh instrument meter, weighing the instantaneous flow conveying materials, accumulation, at the same time, the data such as measuring the measured value and value deviation, through the inverter to adjust the speed of the motor drive belt scales, make accurate to user setting to flow, material flow t

41、o a constant.For electronic belt scales, can choose just qualitative s-type weighing transducer. The connection mode using joint bearings, tensile condition in the lateral force, the ability, can be installed on the seal, compact structure, within the beam.The system is composed of a platform charac

42、teristic of a machine to control the multiple feeder, in order to achieve certain proportion between each feeder, the work is connected, and give a quantitative as current ratio, so its modified control structure is more complex.自动称重配料系统目前，随着科学技术的不断发展，自动称重配料系统已经广泛应用于冶金、煤炭、化工、建材等行业中1。自动称重配料系统可以按照设定配比

43、和流量控制各输入物料的瞬时流量，从而达到控制各种产品的质量和产量的目的，是实现生产过程自动化和智能化、企业的科学管理、安全稳定生产和节能降耗的重要技术手段。微机配料控制系统在生产中的应用不仅可以提高配料质量和产量，也大大减轻了岗位工人的劳动强度，提高了生产效率。自动称重配料系统是一种连续累计自动控制系统，广泛用在煤炭、化工、冶金、建材、食品等关系国计民生的各个行业，配料系统可对物料的配比实现累计量控制，而准确的累计量控制可提高产品质量，降低生产成本，提高劳动效率。自动称重配料系统是一种集输送、计量、配料于一体的在线测量动态自动衡器。该系统由一台或多台配料电子皮带秤组成，不仅能够显示瞬时流量和累

44、计量，还可以根据输送带的瞬时流量与设定值的偏差去调整给料量的大小使瞬时流量更加接近设定值，构成一个环控制系统，达到恒定瞬时流量的目的。随着工业生产的迅速发展，电子皮带秤配料系统的需求量日益增大，被广一泛应用于冶金、建材、电力、化工、食品等行业的工艺控制。同时，随着电子计算机技术和自动控制技术的飞速发展，该系统所应用的技术更加先进，领域更加广泛，可以采取的方案更加灵活多样，而且，由于系统往往耗资巨大，用户的实际条件也各不相同。因此，慎重，全面地选择一套合理、完善、经济的方案就显得尤其重。自动称重配料系统的结构组成主要由输送机架、称重传感器、测速传感器、秤架、主动滚筒、从动滚筒、输送带、张紧装置、

45、拖动装置、调偏装置等组成。当散落在输送皮带机上的物料通过秤体时，秤体中的称重传感器和测速传感器分别把重量毫伏信号和带速脉冲信号通过接线盒送往皮带秤仪表自动配料系统的总体设计思想为：皮带输送机投入运行前，输送皮带上物料流量的设定值由操作人员在键盘上设定。系统投入正常运行后，单片机采样皮带荷重信号和走速信号，将皮带走速信号与皮带单位长度上的瞬时重量相乘即可计算出皮带上物料的瞬间流量F(t)。瞬间流量可通过数码管显示出来，为操作人员提供工艺数据参考。8031系统再将流量实际值与其设定值进行比较，经PID调节运算后计算出控制量vi，再转换为电流输出信号h后而后经放大去控制可控硅的导通角，实现调节滑差电

46、机电磁离合器励磁电流的功能，从而调节执行机构滑差电机的转速，使输送皮带上的物料流量尽可能稳定在设定值附近，并具有良好的静态指标和动态性能。自动称重配料系统广泛应用于工农业生产和社会生活的各个领域。尤其是冶金、煤炭、化工、水泥等行业中，常常需要对散料进行皮带输送过程中的动态连续称量，而且要对输送中的流量进行调节、控制、达到准确的配比。配料质量控制的优劣直接关系着企业生产能否顺利进行。如果配制的质量达不到要求，轻则造成原料、能源的浪费，重则影响产品的质量和生产率，并且有些重要生产岗位的配料失误甚至会给整个生产酿成事故。因此，配料精度的高低和配料速度的快慢制约着整个生产的产品质量和产量，因此应对配料

47、过程的质量和产量控制给予足够重视。电子称自动配料系统可以按照设定配比和流量控制各输入物料的瞬时流量，从而达到控制各种产品的质量和产量的目的，是实现生产过程自动化和智能化、企业的科学管理、安全稳定生产和节能降耗的重要技术手段。微机配料控制系统在生产中的应用不仅可以提高配料质量和产量，也大大减轻了岗位工人的劳动强度，提高了生产效率。由于该系统的两条生产线相同，因此以七台皮带称组成的配料系统为例。本系统主要由配料电子称，仪表控制柜，变频器柜，工业控制微型计算机，及监控管理软件几部分组成。1）： 配料电子称配料电子皮带称对经过皮带的散装物料进行自动的连续称量和累计，具有运输和计量两种功能。称重部分采用

48、电阻应变式工作原理，多托辊杠杆式结构，实际工作时，皮带称采用恒速计量方式，通过调节上级给料速度来改变物料流量，本类型怕带称多用于企业内部生产的工艺控制。2）： 仪表控制柜仪表控制柜主要包括七台皮带称仪表，每台皮带称仪表接受来自称重传感器的重量毫伏信号和来自测速传感器的带速脉冲信号，计算出流量和累计量。并将流量信号以420毫安模拟电流的形式送给工控机，工控机将流量信号与机内设定值比较后，根据一定的控制规则输出420毫安调节信号，控制现场给料机的转速，从而构成单机闭环系统，达到控制某种物料流量的目的。3）：变频器柜 柜中的变频器，接受来自动力控制柜的开关信号控制上级给料电机的启停，同时亦接受来自工

49、控机的4-20毫安调节信号，来改变输出动力电源的频率，从而控制现场7台给料机的转速。如果变频器功率较大，则必须在柜体中配置散热风扇，以保证变频器能正常工作。4）：工业控制微型计算机及软件工控机主机选用华硕IPC-610型14架装式工业PC机箱，配置PCA-6179L全长CPU卡，512M内存，80G硬盘，一个PCL-746+四端口RS232422485通讯接口卡，2个PCI-1720U型4通路隔离模拟量输出卡，工控机作为上位机，通过RS485双向通信接口与皮带称仪表联机，通过RS232双向通信接口与动力控制柜中的PLC联机，输出模拟量控制信号控制给料机的给料流量，从而构成完整的配料系统。工控机另留有一个RS485双向通信接口，以备与全厂的上位工控机通讯。 监控软件的主要功能有：根据生产配方和产量目标对称重过程进行自动控制，对称重数据进行统计管理并实现打印。系统软件有多种现场控制方式和配方输入方式，一适应不同的工程要求，用户可设定报警打印时间等参数，界面采用菜单方式，使用方便，用户可通过鼠标或键盘进行操作，对整个配料系统进行控制和管理。控制