1. Overview
A batching machine is an automated device used for the quantitative distribution of various materials, such as sand and gravel. It is mainly used in the concrete construction industry to replace manual weighing or volumetric metering.
Methods include transporting raw materials such as gravel, sand, and boulders using concrete machinery, conveying them to the main unit via belt scales, setting the concrete mix proportions using a batching machine, and then processing the concrete according to the specifications.
The equipment automatically batches and mixes materials according to a predetermined mix ratio to produce concrete, which is generally suitable for general construction sites, roads, bridges, and other projects.
Procedure.
2. Working principle and composition of the batching machine
The batching machine consists of three main parts: a feeding system, a weighing system, and an electrical control system.
(1) Feeding system: It consists of a storage hopper and a feeding device. Its main functions are to store materials and to feed materials into the hopper under the control of the control system.
(2) Weighing system: The weighing system is a key part of the batching machine, consisting of a weighing hopper, a suspension device, a weighing system sensor, a batching controller, etc.
(3) Electrical control system: The electrical control system is the core component of the batching machine. Its function is to realize the weighing, display, operation and various tasks of the entire batching machine.
Automatic batching program. The system mainly consists of two parts: a batching controller and a high-voltage electrical circuit.
3. Functions of the batching machine
A batching machine is an automated front-end batching device used in conjunction with a mixer. It can automatically batch 3-6 types of materials, including sand, aggregate, and cement, according to the user-designed concrete mix proportions.
The batching procedure for materials (two-stage aggregate concrete) is as follows. It employs electronic weighing, microcomputer control, digital display, and wired remote control operation, featuring accurate weighing and high batching precision.
It boasts advantages such as high speed and strong control functions, and is so easy to operate that you only need to press a button each time.
4. Application of AC300 in batching machines
To achieve the batching function, a PLC program is used on-site to control the start and stop of the AC300 frequency converter, thereby completing the batching process.
Control section wiring:
The AC300 frequency converter parameter settings are shown in the table below:
5. Summary
The batching machine utilizes the universal input/output function of a frequency converter. The control algorithm of the AC300 universal frequency converter has been optimized, resulting in better control performance and higher precision.
It has a fast dynamic response, which enables excellent process control and ensures the reliability of process control.
