SU1124074A1 - Installation for preparing asphalt-concrete mixes - Google Patents

Abstract

1. INSTALLATION FOR THE DISPOSAL OF ASPHALT-CONCRETE MIXTURES, including means for supplying cement and mineral materials, a drying unit, a screen, bunkers for hot mineral materials, metering equipment for cement and mineral materials and a mixer, 6 times a day. , with the aim of expanding technological capabilities through the use of bituminous rocks, it is equipped with a two-roll crusher with a receiving bin and connected to the tense dispenser with a closed conveyor and mounted on a chopper, receiving bin It is also equipped with heaters, and the dispenser is made in the form of a screw conveyor with floating augers placed in the housing, and the shredder rolls have decks installed on their surface in the form of parallelepipeds, each with a bevelled corner part, and the screw conveyor housing is mounted on it inner surface longitudinal grooved rods. 2. Installation according to claim 1, difference. The fact that the heaters are implemented in the form of uniformly located on the heated surface of the longitudinal channels that form the longitudinal channels, which are interconnected by means of nozzles and hoses. Oh j

Description

1 11

The invention relates to road construction and the industry of building materials, in particular to devices for preparing asphalt concrete mixtures.

A known installation for the preparation of asphalt concrete mixtures, including devices for moving in the living and mineral materials, a drying drum, a screen, bunkers for fractions of hot materials, feeders in the moving and mineral materials and a mixer 1).

Closest to the present invention is a plant for the preparation of asphalt concrete mixtures, which include means for feeding in cement and mineral materials, a drying unit, a screen, bunkers for hot mineral materials, metering equipment for mineral and mineral materials, and a mixer 2.

A significant disadvantage of these installations is that their design is not adapted for use as bitumen-bearing rocks (KIROV) with high adhesiveness and viscosity, which excludes the possibility of using cheaper raw materials and thereby increasing the amount of hard-surface road construction.

The purpose of the invention is the expansion of technological capabilities through the use of bituminous rocks.

This goal is achieved by the fact that an installation for the preparation of asphalt-concrete mixtures, including means of supplying cement and mineral materials, a drying unit, a screen, bunkers for hot mineral materials, dispensers in -; a bushing and a mineral material. and a mixer, equipped with a two-roll grinder with a receiving hopper and connected to the bushing dispenser by a closed conveyor and mounted on the chopper, a receiving bunker and conveyor heaters, and the dispenser of the binder is made in the form of a screw conveyor with floating screws, and the shredding rolls have parallelepiped decks installed on their surface, each with a bevelled corner part, and the case of a screw conveyor mounted on

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its inner surface is longitudinal grooved. rods.

In this case, the heaters are formed in the form of evenly spaced on the heated surface 5 forming longitudinal channels of the plates, interconnected by means of nozzles and hoses.

 FIG. 1 shows the installation scheme, general view; 2 shows the grinder structure; on fig.Z roll crushed; figure 4 - section aa on fig.Z; fig.3 - deck design | in fig. 6 is a view along | 5 arrow B in FIG. five; Fig, 7 - dispenser. mixer; on fig.Z - consistently connected sections of the heater; , figure 9 - section bb In fig.Z. The plant for the preparation of asphalt mixes includes means for feeding into the cement and mineral materials, a drying unit, coffins, bunkers and dispensers of mineral materials (not shown), ramp 1

5 with a tubular heater 2, a receiving hopper 3, a chopper 4, a transition hopper 5 in the form of a bunker, a scraper conveyor 6, an inclined chute 7, a mixer 3 and a heating system 9 ° & which has a capacity of 10, a tube furnace 11, a distributor 12 and a return furnace the collector 13, which are interconnected by means of pipelines and pumps (the latter are not shown), sectional

5, heaters 14 evenly placed on the walls of the receiving bin 3 and the heated surfaces of the transition chute 5, the scraper conveyor 6 and the inclined chute 7. The section heaters 14 consist of lining plates forming longitudinal channels, for example, corners 15, branch pipes 16, plugs 17. The sections of the heaters 14 are interconnected by means of flexible

5 of the hoses 13. The switchgear 12 via pipes 19 communicates with the series-connected sections of the heaters 14 installed on the receiving bin 3, the transition duct 5, the scraper conveyor 6 with the tubular heater 2 of the housing 1, and the grinder 4.

The grinder 4 consists of a frame 20, mounted on it drives 21 ,.

5 cam-coupled joints 22, 23 with rollers 24 and 25, which rotate at different peripheral speeds. The rolls 24 and 25 are made in the form of a hollow cylinder 26 mounted by end walls 27 on the shaft 28. The surface of the hollow cylinder 26 has strips 29 on which the decks 30 are installed, made in the form of a parallelepiped — with a beveled angular part at an angle of 40-60 to its longitudinal axis. Decks 30 are installed with a certain pitch, turned cut corners to the middle of the rolls 24 and 25. The roll 28 of the rolls 24, 25 is welded and consists of pins 31 and 32, a diaphragm 33, pipe 34, and the pin 31 has a cylindrical bore 35, and axle 32 L-shaped hole 36. The pipe 34 is filled with four identical holes 37. For heating the rollers 24 and 25 of the shredder 4, the holes 35 and 36 are connected to the distribution device 12 by means of a pipe 19. The coolant is returned to the container 10. Mixer 8 consists of gr hunting (not shown), the dispenser 38 and the agitators 39. The dispenser 38 includes a weight bunker 40 and a paired screw conveyor 41, which consists of a housing 42 in which two floating augers 43 are placed, the housing 42 is equipped with longitudinal corrugated rods installed on its inner surface 44 in increments of 50-70 mm and has a soft connection 45 with a weight bunker 40. The presence of bars 44 provides an increase in productivity by increasing the friction coefficient. The installation works as follows. Before the start of the operation, the installation is carried out through the heating system 9 to the operating temperature, which is maintained until the end of the shift. Bituminous rocks (kira), using, for example, a bulldozer on paus 1 heated by tubular heater 2, are fed into a heated receiving hopper 3. After that, kirs come to shredder 4, where they are crushed to a fraction of 35-40 mm and through transitional chute 5 get into the heated scraper conveyor 6. To eliminate sticking of the cyr on the rolls 24, 25 and deck 0 with bevelled corner portions, they create additional forces to push the material into the transitional stream 5. The heating of the rolls 24 and 25 is provided by direct contact of the heat sink He went to the walls of the hollow cylinder 26, for which from the distribution device 12 through pipelines 19 through openings 35 and through two openings 37 the coolant enters the cavity of rollers 24 and 25 and returns to collector 13 and capacity 10 through openings 36 through second two openings 37 The scraper conveyor 6 transports the kirs to a storage accumulator, heated inclined ostrac 7, from the last kira by means of a screw conveyor 41 of the dispenser 38 —portions are fed to the weight silo 40 to the hot mineral materials previously received weighing hopper 40 of the screen. Upon entering the hot mineral material in the weight bin 40, the Kiera is additionally heated, then, together with the mineral material, enters the mixer 39 of the mixer 8, where the final preparation of the asphalt-concrete mixture takes place. The application of the proposed installation saves costly, scarce oil fuels and expands the raw material base. The constructive solution in the proposed installation of the heating system of the units makes it possible, with the least labor, energy and capital investment in construction, to obtain a cheap asphalt-concrete mix, thereby increasing the amount of hard-surface road construction by half. tW / (rig.1 AW

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Claims (2)

1. PLANT FOR PREPARING ASPHALT CONCRETE MIXTURES, including means for feeding binder and mineral materials, a drying unit, a screen, bunkers for hot - mineral materials, binder and mineral material dispensers and a mixer, with the fact that, in order to expand technological capabilities through the use of bituminous rocks, it is equipped with a two-roll grinder with a receiving hopper and connected to the dispenser the binder with a closed conveyor and heaters mounted on the chopper, receiving hopper and conveyor, and the binder dispenser is made in the form of a screw conveyor with floating screws placed in the housing, and the chopper rolls have a mouth decks in the form of parallelepipeds, each with a beveled corner part, are mounted on their surface, and longitudinal corrugated rods installed on its inner surface are mounted on its inner surface. 2. Installation according to claim 1, characterized in that the heaters are made in the form of plates uniformly located on the heated surface forming longitudinal channels, interconnected by means of pipes and hoses. SU t. 1124074 1 1124074