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Mixing material mixing quality control method and system

A quality control method and technology for a control system, which are applied in the field of mixture mixing quality control methods and systems, can solve problems such as inability to monitor concrete mixing quality in real time, discrepancies in experimental results, and mixer shutdown for unloading, etc., so as to increase construction costs and avoid The effect of short mixing time and reducing the influence of human factors

Inactive Publication Date: 2018-06-01
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the operation of the two is simple, there are some shortcomings: first, the experimental results brought about by personnel with different levels of proficiency are different; second, the detection process requires the mixer to be stopped and unloaded, which is time-consuming and labor-intensive; third, it cannot be monitored in real time concrete mixing quality

Method used

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  • Mixing material mixing quality control method and system
  • Mixing material mixing quality control method and system
  • Mixing material mixing quality control method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0078] (1) The mixed soil mix ratio that adopts in the present embodiment is following table 1:

[0079] The mixing ratio of concrete in the present embodiment of table 1

[0080] Water (kg / m 3 )

Cement (kg / m 3 )

Sand (kg / m 3 )

Gravel (kg / m 3 )

247

360

814.5

990.6

[0081] (2) Stirring equipment used in this embodiment: laboratory twin-shaft mixer, such as image 3 As shown, PLC, frequency converter and related low-voltage components are installed in the electric control box 8.

[0082] (3) Experimental process:

[0083] Prepare various materials according to the concrete mix ratio; connect electrical components.

[0084] No-load operation: use the AC speed regulating PLC control system to control the speed of the mixer within a reasonable range.

[0085] Mixing stage: In order to eliminate the influence of chance on the experiment, under the same mixing time (150s), the experiment was performed twice. During the mixing proc...

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Abstract

The invention discloses a mixing material mixing quality control method and system. The method comprises steps of: firstly adjusting the rotation speed of a stirrer to a specified range which is a production actually determined rotation speed range; acquiring the torque of a stirring shaft in real time and calculating the stirring power under different stirring time; filtering the pieces of acquired power data and then linearly fitting the slope of a fitted line; determining the number of peaks and valleys of the data by the change of the slope of the adjacent fitted line, and determining thetime period of the second valley as the best time period for the mixing quality. The method and system can avoid manmade experiment errors by means of the automatic detection of a universal device. In addition, the method avoids the short mixing time and the poor quality of the mixture, achieves long mixing time and increases construction cost.

Description

technical field [0001] The invention belongs to the technical field of automatic control, relates to a mixture mixing quality control technology, in particular to a mixture mixing quality control method and system. Background technique [0002] During the mixing process, the mixer achieves the purpose of uniform mixing and easy construction by extruding, shearing and turning the mixture. The quality of concrete mixing is mainly characterized by workability, which refers to the performance of fresh concrete that is easy to operate during construction and can obtain uniform quality and compact molding. The quality of concrete mixing will have a direct impact on the smoothness, compaction, strength and other indicators of the road surface. [0003] At present, in engineering practice, the slump method and Viber consistency method are used to test the workability of concrete construction. Although the operation of the two is simple, there are some shortcomings: first, the expe...

Claims

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Application Information

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IPC IPC(8): G05D13/62B01F15/00B28C5/00B28C7/02
CPCG05D13/62B28C5/006B28C7/026B01F35/212B01F35/22B01F35/221422B01F35/2209B01F2101/28B01F2101/38
Inventor 刘洪海董九洋李振宇
Owner CHANGAN UNIV