Pre-graded cold feed system of asphalt concrete mixing plant started the production process, based on asphalt mixture gradation requirements on the ratio of aggregate for the first time. It is composed of several separate cold Hopper, feeding belt conveyor, a pair of aggregate belt machine and a feeding belt machine.

1 every independent silos, cooling system uses a modular design, convenient transportation, installation, removal, and installation connected to the silo support base as a whole. Hopper opening mechanism with manual control, if you need to adjust the aggregate grading, there are two types of regulation, namely changing cold warehouse door opening size, or by adjusting the feed belt speed to meet the requirements. Each cartridge above are covered in grid networks, it can be dumped to the hopper loader when the aggregate filters out excess aggregate, as well as ease the aggregate impact on the silo. Sand Depot wall equipped with a vibrating motor, you can make smooth sand falling to prevent arching. Only accept aggregate ready equipment working, cold silo to boot. Cooled storage bin motor startup depends on the mixing station other Motors (such as dryer, filter, etc). Therefore only the motor started, cold silo to boot.

2, feeding belt with corrugated rib belt, its merit is to prevent the aggregate side spill, and keeping the yard clean.

Below each silo is equipped with a feed conveyor, which is responsible for silos in the aggregate to aggregate on the belt. Its speed can be adjusted by inverter, depending on gradation of asphalt mixture may be necessary. When the belts when there is a deviation can be corrected by adjusting the screw; when the belt conveyor of corrugated sidewall lateral deviation time, you should do so by adjusting screw the bearing to the right on the outside move, until the belt no longer run so far. And vice versa. But in the process of adjusting belt to one principle: belt tension should not be too small, too little belt slipping; too tight will cause wheel bearing abnormal stress, wear and power-belt easy to damage.

3, aggregate materials on the belt and the belt to operate at a constant speed, the head Sweeper with a scraper, scraping sediment off the outer surface of the belt adhesion.

Aggregate structure of the belt and the belt is essentially the same, but aggregate belt length much longer than the charging belt aggregates feeding belt belt deviation than a lot bigger, so installation pay attention to the following points:

1, feeding the belt level support base must be consistent;

2, because of aggregate belt is installed in the silo support, in silo's Foundation level to ensure a high degree of consensus;

3, the installation of belt do not pull too tight and not too loose, the belt does not slip as the criteria; small belt tension belt slipping; too tight will cause wheel bearing abnormal stress, wear and power consumption.

Any deviation in the belt, which causes more complex than feed belt confidential, but ruled out one by one in the following ways:

1, press the feed conveyor is described in the correction method of adjusting the adjusting screw, and fine-tuning adjustment screw by this method;

2, check whether the belt rack display levels such as uneven pad flat.

3, check the Groove idler bracket installation and belt rack-vertical; the belt

Several suitable locations on the machine adjust the installation angle of the grooved roller, choosing the number of grooved roller depending on the situation.

Aggregate by feeding the belt into the drum. In the aggregate between the belt and the belt has a grid in order to prevent excessive aggregate into the drum. Installation should be made from the aggregate of aggregate belt out falls on the grid length on 2/5 in order to achieve the objective of effective screening.