SU421508A1 - FLOWING LINE FOR PORTABLE CONCRETE AND KE_RAMIC-MIXTURES - Google Patents

Description

one

The invention relates to a production line for the preparation of porous concrete and ceramic mixtures for the manufacture of cellular building materials and can be implemented in enterprises of the construction industry, in particular in cellular concrete plants.

A known flow line for the preparation of porous concrete and ceramic mixtures, including a continuous mixer and an overpressure heating system for the mixture. The preparation of porous mixtures in a known line is carried out using foaming agents; it does not use the potential possibility of expansion of the mixture due to the water contained in it.

The purpose of the invention is to provide a swelling of the mixture due to the water contained therein.

This goal is achieved by the fact that the heating system of the s-mass under pressure is made up of a measuring device and an adjustable choke of a heat exchanger connected to the mixer by means of a mud pump with a regular flow meter.

The drawing shows the schematic of the proposed production line.

It contains a continuous mixer, series-connected by pipeline 1, a mortar pump 2, an adjustable relief valve 3, a heat exchanger 4 heated by steam or electric current, equipped with a thermometer 5 and a pressure gauge 6, an adjustable choke 7 and a form 8.

The swelling of the mixtures on the proposed technological line is as follows.

In mixer 1, a homogeneous mixture is prepared consisting of solid ground components and water, without the addition of a blowing agent; it is better to use the vibrating mixer. From the last month, the mortar pump.m 2 under overpressure is supplied to the heat exchanger 4, where it is heated to 100-180 ° C. In order to avoid the mixture boiling in the heat exchanger, with the help of the mortar pump 2 and the outlet valve 7 located at the outlet of the heat exchanger, the heat exchanger in the heat exchanger is created.

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An adjustable safety valve 3 serves to protect the pump from overload: in the event of an increase in pressure in the heat exchanger 1k above the set point, Cx sends the excess amount of the mixture back to the pump.

Since the amount of water passing into the vapor state depends on the heating temperature of the mixture in the heat exchanger, the porosity of the expanded mixture is controlled by the heating temperature. The pressure and temperature correspondence in the heat exchanger to the technological parameters of the mixture is controlled by a thermometer 5 and a pressure gauge 6 installed at the outlet of the heat exchanger in front of the throttle 7. As the mixture passes through the throttle 7 and in the pipeline to form 8, the pressure in the mixture drops to atmospheric ° C, and part of the mixing water goes into a vapor state, swelling the mixture to the desired porosity.

Subject invention

A flow line for the preparation of porous concrete and ceramic mixtures, including a continuous mixer and a pressure heating system for the mixture, characterized in that, in order to ensure the mixture swelling due to the water contained in it, the mixture heating system

under overpressure made in the form of a measuring apparatus and an adjustable choke heat exchanger connected to the mixer by means of a sludge pump with adjustable safety

valve.

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