Dynamic control system and method for batching accuracy of concrete mixing plant

A technology of dynamic control and mixing station, which is applied in the direction of mixing operation control, mixing operation control device, batching and batching instrument, etc., can solve the problems of frequent metering out of tolerance and insufficient precision of raw material batching, achieve high batching accuracy, reduce personnel configuration and Resource allocation, the effect of ensuring production quality

Active Publication Date: 2015-01-07
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI
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Problems solved by technology

[0011] In order to solve the problems of insufficient raw material batching accuracy and frequent measurement out of tolerance in concrete mixing plants, and reduce human intervention in the batching process, the inv

Method used

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  • Dynamic control system and method for batching accuracy of concrete mixing plant
  • Dynamic control system and method for batching accuracy of concrete mixing plant
  • Dynamic control system and method for batching accuracy of concrete mixing plant

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Embodiment 1

[0020] Embodiment 1, in conjunction with attached figure 1 And attached figure 2 The present invention is described further:

[0021] The system of the present invention includes several parts such as a batching device, a weighing sensor, a batching instrument (PLC) and an industrial control computer. In particular, the couplings and soft connections between each part are organically unified to ensure that the connection is moderately tight.

[0022] The batching device of the above system adopts the "double-door method" and "double-pipe method" according to the type of material to achieve rough weighing and fine weighing, that is, two discharge doors, one large and one small, and two pipelines, one thick and one thin, are designed, respectively responsible for Transportation of powder and liquid materials.

[0023] The load cell of the above system is a high-precision pull-type load cell, which has the characteristics of high sensitivity, good linearity, small zero drift a...

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Abstract

The invention belongs to the technical field of concrete engineering and relates to a dynamic control system and method for the batching accuracy of a concrete mixing plant. The dynamic control system comprises a batching device, a weighing sensor, a batching instrument (namely a PLC) and an industrial control computer. According to the control system, dynamic weighing data which is acquired in real time is compared with an expected batching set value (namely a proportioning parameter), the unloading quantity is controlled in a stepped manner by the batching device by virtue of a rough weighing-fine weighing two-stage batching method, and the accurate batching is finished by carrying out inching control and automatically correcting real-time fall by virtue of a cycle control algorithm. The dynamic control system has the outstanding advantages of high batching accuracy and good stability and thus can be applied to concrete and bituminous concrete mixing plants in the field of civil engineering, the real-time automatic control can be realized, the automation degree of the mixing plants can be improved, the batching accuracy and reliability are improved, and the production quality of concrete is guaranteed.

Description

technical field [0001] The invention relates to the technical field of concrete engineering, in particular to a dynamic control system and method for batching precision of a concrete mixing plant. Background technique [0002] With the rapid expansion of railways, highways, ports and urban infrastructure construction, the concrete production industry has flourished. Especially with the rapid development of high-speed railway construction in recent years, everyone's understanding of concrete and quality requirements have been continuously improved, which also makes concrete production technology face severe challenges. Concrete production must strictly control the raw material ingredients according to the design mix ratio to ensure that the various properties of the concrete can achieve the expected goals. Batching is one of the key joints in the concrete production process, and its stability and accuracy directly affect the final quality of concrete. Batching accuracy (bat...

Claims

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Application Information

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IPC IPC(8): B28C7/04
CPCB28C7/0404B28C7/0418
Inventor 楼梁伟朱长华仲新华谢永江李享涛
Owner RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI
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