The scientific application of the concrete mixing plant control system has made China's construction industry a big step forward

Early concrete was mainly produced by construction sites on their own. This production method has low efficiency, high labor intensity, and harsh production environment. The quality of the produced concrete is not easy to control, and it also poses a great harm to the production workers. As my country's demand for concrete is increasing, and its quality requirements are becoming higher and higher, the traditional production methods can no longer meet the demand. To this end, after the 1990s, China's concrete mixing plant technology has developed rapidly. At present, there are two main ways to build a concrete mixing plant control system. One is to use an industrial computer with data acquisition and control as the system hardware. C ++ and other programming software make the upper computer operation interface. Using this method has some advantages in the initial investment cost, but the reliability of the industrial computer and the acquisition card for long-term work in a harsh environment is poor, the later maintenance cost is higher, C ++ programming and modification are also more complicated, and the system is scalable Sex and openness also have great limitations. Another is to use PLC as the system controller and write the upper computer operating system with configuration software. PLC is famous for its flexibility and reliability. Programming is easy to learn and master. The configuration software is simple to use and has a rich library. It can easily compile a powerful host computer operating system.

In order to ensure the production quality of concrete, it is necessary for the controller to have a strong analog processing capability and a fast analog acquisition capability. The LK PLC of Hollysys has inherited the advantages of Hollysys DCS analog processing capability, and there are The analog acquisition module with a sampling period of less than 50ms in the channel (6 channels) provides guarantee for the production of high-quality concrete. The following is a detailed introduction to the control system of the concrete mixing plant built with the LK series PLC of Hollysys.

The raw materials of concrete generally include sand, cement, ore powder, fly ash, expansion agent, water, and additives. In the control system of the mixing station, the raw materials are weighed according to the given ratio, and then discharged to the mixer for mixing and mixing. After the set time is reached, the concrete is discharged and finally transported away by the transport truck.

The control system of the concrete mixing plant is a control system that automatically mixes and mixes raw materials such as gravel, cement, water, and additives at a certain ratio to produce concrete. The key step of concrete production is to mix the production materials according to a certain proportion. The accuracy of the feeding has an important influence on the quality of the concrete produced. At present, there are two main ways to build a concrete mixing plant control system. One is to use an industrial computer with data acquisition, control and other boards as the system hardware, and use C ++ and other programming software to make the upper computer operation interface. Another is to use PLC as the system controller and write the upper computer operating system with configuration software. PLC is more and more used in the concrete mixing plant system due to its flexible and reliable characteristics. The LK series PLC of Hollysys also has good application in the concrete mixing industry with its powerful data collection and processing capabilities .

The sales telephone of the concrete mixing plant control system produced by our company: 18439825111

Tyco's official website: http://www.taikegongkong.com

Contact: Liu Hui