SU458815A1 - Method to control and regulate the process of vibration of a gas silicate mixture - Google Patents

Description

The invention relates to the field of building materials and can be used in enterprises of the building industry that manufacture cellular-bethod articles from high-viscosity, larrimer, gas-silicate mixtures using vibration effects at the molding stage.

There is a known method of controlling and regulating the process of vibration of a gas-silicate mixture, which includes determining the speed of the mixture setting and choosing the optimal vibrating vibrating air. The rate of gas evolution is judged by the change in electrical conductivity of the cell mixture enclosed between the electrodes of the sensor. The conductivity of the mixture depends not only on the volume of gas bubbles formed in the mixture volume, but also on the mixture temperature, electrolyte concentration, mixture parameters, etc., which makes it impossible to choose the correct mode in the process of vibroforming to obtain high-quality finished products.

The purpose of the invention is to improve the quality of the product.

This is achieved by additionally determining the rate of change of the lift height of the mixture, the choice of the optimal mode of vibration effects is carried out in relation to the speed of setting of the mixture to 1 speed of changing the height of the mixture, and the moment of switching on and off the vibrator is determined by the rate of change of the height of the mixture rise. The drawing shows a flowchart explaining the described method. It includes temperature sensors 1 and elevation of the mixture 2, amplifiers 3 and 4, differentiating devices 5 and 6, dividing unit 7, comparison unit 8, unit 9 for specifying product quality, regulating unit 10, relay controller 11, drive 12 and vibrating plate 13 The method is as follows. A gas silicate mixture is poured into the mold and temperature sensors 1 and the lifting heights of the mixture 2 are installed.

Amplified amplifiers 3 and 4 of the output voltage from sensors 1 and 2 are fed to differentiating devices 5 and 6, in which signals are generated that are proportional to the rate of change of temperature and the height of the rise, which characterize the rate of set and expansion of the mixture. Sipnals from devices 5 and 6 are sent to the dividing unit 7. The output signal of the block is proportional to

the ratio of the first derivatives is compared in the comparison unit 8. with a given signal, the value of which is selected in accordance with the specified product quality specified by the blocks 9. The error signal from the block

Comparison 8 enters the regulatory input

unit 10, and the output of which produces a signal that controls the mode of vibration effects. Vibration is increased if the derivative of temperature prevails over the derivative of the height of the mixture and vice versa, which ensures synchronization of the physicochemical processes of the setting and expansion of the mass.

The vibrator is turned on only when the process of mass learning is in progress and is turned off after its termination. This is achieved by the fact that the signal from the device 6, proportional to the rate of change in the height of the mass, is fed to the relay controller 11, which activates or deactivates the drive 12 of the vibration plate 13.

Subject invention

Method 1 of controlling and adjusting the vibration process of a gas-silicate mixture, including determining the setting speed of the mixture - and selecting the optimal mode of vibration effects, characterized in that, in order to improve product quality, the rate of change of the lifting height of the mixture is additionally determined, and the choice of the optimal mode of vibration effects carried out with respect to the setting speed of the mixture, K, the rate of change of the lifting height, the moment of switching on and off of the vibrator is determined by the speed of change The height of the rise of the mixture.