Research And Development Of Alloy Grain Size Automatic Measurement System

Blast furnace ironmaking is one of the most important ways of iron making in China.Before entering the blast furnace,the raw material should go through a process called sintering.Because the shape of the alloy ore used for preparing the sintering raw material is different in size and can not be directly used for production,it is necessary to have a particle size detection device which can quickly realize the screening of the particle size.The alloy mineral particle size detection system described in this paper is a device capable of realizing multi-stage screening.This paper first introduces the structure and working principle of the device,and expounds the key technologies.Three vibrating motors are fixed on the device on the triangular form of installation,and by using single or the combination of multiple different vibration motors,it can provide a variety of exciting methods and procedures,then realizing three processes such as the material screening,eliminating plugging material and linear conveyor.By adjusting the vibration time,the screening efficiency and speed can be improved as much as possible.According to the working principle of the testing device,the action sequence of the electrical components is defined,the corresponding control elements are selected,and the corresponding control program is compiled.Through the design of the control system,it can not only realize the automatic operation of the system,but also realize the manual control.Automatic control primely meets the requirements for time and cost the industrial production site,at the same time,for workers the manner of manual control is help for facilitate equipment maintenance and maintenance.This paper introduces the important component of the detection system-weighing system.The weighing system of each grain grade of sintering pellets contains three weighing sensors of the same type,which is installed approximately in an equilateral triangle shape.In this paper,a mathematical model is established by analyzing the weighing system,and then the simulation is carried out with Simulink under the excitation of step signal.In Xinxiang Sida company,a large number of experiments about sintered pellets are carried out,with the step signal of weight used as the incentives for the weighing system.The results of the experiments show that the results of the simulation are correct,and the accurate sampling time is obtained,which provides the basis for the preparation of the sampling program.The article finally introduced the control page design.The VB software is used to the design the control interface,simultaneously to compile the communication program between PLC and computer.In the VB software,by using a variety of built-in controls,we can quickly design a friendly interface,and also a communication control plug-inMSComm is provided.The control provides a series of standard communication command interface,which allows the establishment of a serial connection and the connection to other communication equipment(such as Modem).The detection system can meet the requirements of multi-stage screening,with the advantages of high efficiency and high precision.Also the control system designed functions stably.