The mixing host and control system are indispensable parts of concrete batching plants, because they will affect the production efficiency of this concrete plant.
Electric control system of concrete mixing plant is mainly the following three kinds of control mode is given.
1, Distributed microcomputer control: this control is widely used in the design of form in the early days of the concrete mixing plant.The core of the control system of programmable controller, computer only for management reports to print at the next higher level, the function of the computer and the effect is not obvious.Concrete mixer with the wide application of commercial concrete , to the functional requirement of the concrete batching plant is more and more complex, this is very difficult to control in the form of application.
2, Centralized microcomputer control: this control form the computer control and management functions to focus on a computer, the heavy task, and the production process for reporting data statistics cannot be synchronized, can’t statistics, measurement are much influenced by artificial factors.Measuring control program, for example: the accuracy of the signal amplifier and A/D interface card will affect the measuring accuracy.
3, Centralized double microcomputer control: this form is to solve the human factors of interference measurement.Adopted special ingredients control instrument and control the production and management function points on two computers, noninterference, production control and report statistics synchronously, and also can be used as a backup machine production management computer, provides with the computer’s network interface at the next higher level.
The concrete mixer(mixing host) of concrete mixing plant:
The forced concrete mixer has good mixing quality, strong overload capacity, no segregation of discharge, high production efficiency, and can adapt to a variety of properties of concrete mixing. At present, the commercial concrete mixing plant equipment generally adopts forced mixer.
Compulsive concrete mixer consists of twin shaft, single horizontal shaft, vertical shaft and planetary forms,double horizontal shaft compulsive concrete mixer due to good performance, high production efficiency, good adaptability, structure characteristics, good reliability is suitable for the production of concrete; the single horizontal shaft concrete mixer and single shaft concrete mixer because of its structural features and adaptability in the concrete mixing equipment has been used less: planetary concrete mixer used at present is not common in imported equipment.