Full-automatic cement foaming machine and process control

Abstract

The invention discloses a full-automatic cement foaming machine and process control. The process control comprises the following steps: step 1, carrying out qualitative experiment on foam concrete of different unit weight, and thus obtaining a correlation curve of injection amount of water, ash and foam and the unit weight; step 2, inputting data of the correlation curve to a variable program controller; step 3, inputting numerical values of a water-ash ratio and foam unit weight required to a touch screen of the variable program controller, automatically calculating a frequency needed by a variable-frequency motor by virtue of the variable program controller, supplying a calculated signal to a frequency converter by virtue of the variable program controller, and outputting the corresponding frequency to control the rotation speed of the variable-frequency motor by virtue of the frequency converter. According to the full-automatic cement foaming machine and process control, the process of the existing equipment for proportioning completely by virtue of experience and sensory organs can be completely abandoned, the interference of human factors can be eliminated, and the proportioning is realized completely according to the measurement and calculation.

Description

technical field [0001] The invention relates to equipment and control technology in the field of construction machinery, in particular to a fully automatic cement foaming machine and process control. Background technique [0002] Foamed concrete is a new type of lightweight concrete. The manufacturing principle is to add appropriate proportion of foam to the cementitious material (cement) with a certain water-cement ratio, and mix the foam and cement slurry evenly to form a concrete with a large number of closed pores. A new type of lightweight insulation material. It belongs to the bubble-shaped thermal insulation material. Its outstanding feature is that it forms honeycomb-like closed foam holes inside the concrete, which makes the concrete lightweight and thermally insulated, so as to reduce the load of the building, reduce the thermal conductivity, and also play a role in energy saving and environmental protection. effect. In recent years, foamed concrete has been wide...

AI Technical Summary

Problems solved by technology

However, due to the extremely low level of production technology of the cement foaming machine, the water-cement ratio (the ratio of the cementitious material) and the amount of foam added are largely based on the experience of the workers, while the water-cement ratio and the amount of foam mixed Quantity is the key to determine the quality of foam concrete

If the amount of foam injected is too high, the compressive strength of the foamed concrete produced is low, which is the so-called "tofu dregs project"; if the amount of foam injected is too low, the product's bulk density will exceed the standard, which will increase the load of the building and cause damage to the structure of the building. damage

Therefore, the quality of foamed concrete produced based on workers' experience is completely out of control, and there is a huge deviation from the general + / -5% design bulk density requirement, which is contrary to the tenet of "a century-old plan, quality-oriented" in the construction industry.

The main reason for all this is that the production process of domestic cement foaming machine manufacturers cannot meet the corresponding requirements.

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