SU337267A1 - INSTALLATION FOR PREPARATION OF CONCRETE MIX - Google Patents

Description

The invention can find application in the building materials industry.

Concrete preparation plants are known, containing feed bins comprising a concrete mix, metering devices, feeders and a slender continuous mixer.

The purpose of the invention is to provide more accurate dosing, to increase the homogeneity of the mixture and the strength of the finished product with less cement consumption.

This is achieved by the fact that a gas flame concentrator is mounted between the supply bunker and the dispenser of the latter.

The drawing shows the proposed installation.

The installation consists of a conveyor}, which feeds the floor from the factory warehouse to the feed bin 2, having in the lower part of the feeders 3, for example screw. Under the latter, there is a gas flame concentrator consisting of a working chamber 4, combustion chambers 5 and a pipe 6, under which there is a roar 7 distributing gas suspension particles through bunkers 8 and 9 connected by a pipe W with a cyclone 11 having a fan 12. Under the bunker 8 a dispenser 13 is disposed, which feeds sand into the hopper 14, where cement 16 is fed from the hopper 15 to the dispenser 16. Under the hopper 14 placed spekekovy feeder 17

to supply a dry cement-sand mixture to a continuous jet mixer 18, to which water is sprayed through a nozzle. A storage bin 19 of the concrete mix is mounted under the jet mixer 18, the latter and the bunker 14 are connected by pipelines 20 and 21, respectively, to the dust suction fan 22. Under the storage bin 19, a conveyor 23 is installed for feeding the concrete mixture to the concrete distributor 24, and from there to the mold 25.

Natural sand from the factory warehouse

the conveyor 1 enters the feed bin 2, from where it enters the working chamber 4 of the gas-flame concentrator using screw feeders 3, into which simultaneously from opposite ends from the combustion chambers

5 at a speed of 500 fps and at 550 ° C gas-flame jets expire, capturing sand, directed one jet against the other and pushed them. Then, through the pipe 6, the gas suspension is lowered onto the screen 7, where the particles are smaller

5 mm fall into the bunker 8, and particles larger than 5 mm roll down from the screen 7 into the bunker 9. Particles smaller than 0.2 mm are removed by the fan 12 through pipelines 10 to the cyclone 11. Enriched sand, freed

The treatment in the working chamber 4 is in the bunker 8. At the exit from the working chamber 4, the sand has a temperature of 140-150 ° C. In the hopper 8, it is kept to the desired temperature, and then with the feeder 13 is fed into the hopper 14, where cement is fed from the hopper 15 with the feeder 16. The dry cement-sand mixture is fed by a screw feeder 17 to the jet mixer 18, into which the sprayed water is supplied to the nozzle. The concrete is fed into the collection hopper 19, and then conveyor 23 is fed to the concrete distributor 24 and then to the mold 25 to form the products.

Cyclone 11 fine fractions are used to prepare stucco J ITTWTWTVVHWyy rrwyTTO

thieves, coarse fractions from bouvker 9 are used as aggregates for the production of low grade concrete.

Subject invention

An installation for preparing a concrete mix, containing consumable bunkers of the constituent concrete mix, metering devices, feeders and a jet mixer of continuous action, characterized in that, in order to ensure 1 more precise metering, improve the homogeneity of the mixture and increase the strength of the finished product with less cement consumption , a gas flame concentrator is mounted between the filling bin and the dispenser of the latter. g