This system mainly includes: Hot aggregates storehouse total, mixing layer total.
2.7.1 Hot aggregate storage total
Hot aggregate storage is consisted of the bin, gate, air cylinder, overflow pipe, level meter, thermometer, etc. it is mainly using for store the sifted hot aggregates, in addition, there is an air cylinder controlled by the electromagnetism valve on the bottom of each storehouse to offer the quantitative aggregates. Moreover every room of the material storehouse is equipped with the level meter, which can adjust the feeding speed of the feeder. When the storehouse is full, it can overflow the surplus aggregates through each outlet of the hot aggregate storage, and delivery them to the mixing plant; now there is the pressure –relief pipeline in the hot aggregates storage, it can make the inner pressure release through the pipeline and avoid the dust to flying out. Finally there are four overhauling stations on the one side of the hot aggregate storehouse, and matched with the ladder, easy to overhaul and maintain.
Ore powder storage is mainly consisted of the pneumatic butterfly valve and ore powder storing hopper, etc. it is mainly used for weighting up the ore powder in the hopper, put the quantitative filler into the mixer, and then mix them with the hot aggregates and bitumen.
2.7.2 Mixing layer total
This device includes: The principal part of mixing layer, hot aggregate measuring device, filler measuring device, bitumen measuring device, working layer legs and ladder etc.
(1) The measuring device of the stone hot aggregate:
The measuring device of the stone hot aggregate is mainly consisted of the measurer, the pull transducer, air cylinder and emptying door etc. Weigh up the weight through 3 pull transducers, the signal pass the computer, the real aggregate weight reveals on the display screen, the precision: ± 0.5%;
(2), Filler measuring device:
Filler measuring device is mainly consisted of the measurer, the pull transducer, air cylinder and emptying door etc. Weigh up the weight through 3 pull transducers, the signal pass the computer, the real aggregate weight reveals on the display screen, the precision: ± 0.5%;
(3), Bitumen measuring device
It is mainly consisted of the measurer, the pull transducer, air cylinder and bitumen emptying valve etc. Weigh up the weight through 3 pull transducers, the signal pass the computer, the real aggregate weight reveals on the display screen, the precision: ± 0.25%;
Attentions of Installation and debugging:
Notice to make every gates rotate flexibly, it should be accurate to find out the questions and reasons, it should be rational to deal with the problem.
The structural sketch of the mixing plant shows as follows:
Mixer:
The structure composing: It is mainly consisted of the cycloid speed-down motor, chain wheel, chain, synchronous gear, mixing axle, mixing bearing pedestal, mixing arm, mixing vane, shell, upper cover, wear-resisting board, etc. The mixer is the key part of the bitumen mixture mixing equipment. The structural sketch shows as follows:.
Main function: According to a certain matching ratio, mix round the weighed aggregates, filler and bitumen, then mix into the finished materials needed evenly.
The mixer belongs to the horizontal double-axle spiral mixing mode, the vanes, mixing arm and board are all the chromium molybdenum alloy, the mixing arm is the cast steel material, which has very strong anti corrosive and wear-resisting performance, can lengthen its service life greatly. 30kW speed- down motor can mix the aggregates, filler and bitumen fully through the function of chain wheel, chain, synchronous gear, mixing axle and vanes, and then make the finished material
