SU1286672A1 - Apparatus for prefabricated hot asphalt-concrete mix - Google Patents

Description

The invention relates to the construction and building materials industry, in particular to devices for the preparation of hot mix asphalt.

The purpose of the invention is to reduce energy consumption and dynamic loads.

The drawing shows the device, the overall appearance.

A device for preparing a hot asphalt concrete mixture consists of a power unit 1 connected to a feed chamber of a drying drum 2, a closed metering hopper 3 for a small frakhshchsha, connected by means of a transporting unit 4, for example, a pipeline, to a feeder 5 which consists of sideways unloading working 6 and aero

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In order to supply large fractions of a closed dosing bin with the power of the transporting aggregate, mineral matter fractions, such as sand, are fed into chamber 6, where the post through the flue 9 from the drying 2 flue gases also penetrates through the partition wall 8. At the same time, the boiling bed of sand increases its fluidity.

Dried in the feeder 5 p enters the hopper 10 for small fine fractions.

Then the large and small fries get through the dispenser into the mesh where the mineral powder is also added with the help of a tool 17 and produces a dry mix.

7 chambers located parallel- After this, bitumen is added

five

In order to supply coarse fractions from the closed metering hopper 3, the mineral material of small fractions, such as sand, is fed into the working chamber 6 by means of the transporting unit A, where the flue gases entering the duct 9 from the drying drum 2 also penetrate through the porous partition 8. In this case, a boiling layer of sand appears with increased flowability.

The sand dried in the feeder 5 enters the hopper 10 for hot fine fractions.

The coarse and fine fractions then enter the mixer 16 through the dispenser, where the mineral powder is also added using the device 17 and dry-mixed.

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one above the other and separated by a porous partition 8.

The aeration chamber 7 is connected to the flue gas exhaust 9, the waste is from the drying drum 2. The outward end of the working chamber 6 is connected with the hopper 10 of hot fines to the hopper.

Under the chamber 11 for unloading hot coarse fractions, a receiving device for a hot elevator 12 is placed, the outlet of which is connected to a discharge chute 13 and a screen 14, under which hoppers 15 coarse fractions are located, connected through a weight dispenser 16 installed under them.

The device also has tools 17 and 18 for introducing mineral powder and bitumen into the mixer, a pipe 19 connecting the working chamber 6 with the fan 20 of the exhauster, a device 21 for adjusting the angle of inclination of the feeder 5 and a valve 22 placed in the pipe 19.

A device for making hot asphalt concrete mix works as follows.

The mineral material of large fractions, for example, crushed stone, is supplied by means of the power unit 1 to the drying drum 2, where it is dried and heated. The rubble heated in the drying drum 2 is lifted by the hot elevator 12 on the coffin 14, where it is sorted by fractions and then accumulates in the compartments of the storage bins 15. Parallel;

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thirty

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by means of the device 18 and the final mixing is carried out.

The capacity of the power supply 5 is controlled by its length, as well as its angle of inclination with the help of the device 21, and accordingly the capacity of the fan 20 of the exhauster 20 varies accordingly.

The proposed implementation of a device for preparing hot asphalt mixes reduces energy consumption by eliminating the use of an actuator to move material along the feeder, in addition, vibration is eliminated, which reduces the dynamic loads on equipment, and thereby increases its durability and reliability.

Claims (1)

Invention Formula A device for preparing hot asphalt concrete mixture, including a power unit with dosing and accessories of small and large fractions of mineral material, a drying drum with a heat chamber and an elevator, a screen, bunkers for the hot fractions of mineral material, a mixer located under them, introduction of mineral powder and bitumen into the mixer, a feeder located between the fine fraction feeding unit and the hopper for hot fine fractions, which leaves the drying drum g flow and control system 12866724 nor, characterized by its length, which separates them at risk, in order to reduce the energy-consuming partition and adaptation and increase reliability, the feeder is you to adjust the angle of inclination Filled as aeration chamber tilted to the side unloading in parallel with 5 discharged from the dryer drum working and aeration chambers with gas flow meter.