Concrete mixing station
consists of material feed storage systems, material weighing system, material
handling system, mixing system, powder storage systems, powder conveying systems,
powder metering systems, water and additive metering systems and control
systems and other five major systems and other ancillary facilities components.
Mixer stirring their
way into forced mixing and self-loading mixing. Compulsory mixer is mixing
station at home and abroad mainstream use, it can be stirred liquidity, semi-rigid
and rigid and other dry concrete. Since the fall mixing console main stirring fluidity
concrete, rarely used in the mixing station.
Compulsory mixer according
to the spindle structure is divided into a planetary mixer, single horizontal
shaft mixer and twin-shaft mixer. The integrated use of performance especially
in the twin-shaft compulsory mixer is best.
Material weighing
system is affecting the quality of concrete mixing station concrete and concrete
production cost of key components, mainly divided into aggregate weighing, weighing
powder and liquid weighing three parts. Under normal circumstances, 20 cubic
meters per hour or less mixing station superposition weighing methods, namely aggregates
(sand, stone) with a scale, a scale with cement and fly ash, water and liquid additive
were weighed and then put into the water, said liquid additive pre-mixed infighting.
In more than 50 cubic meters per hour, mixing station, said the use of various materials
weighing independent manner, all have adopted electronic weighing scales and computer
control. Aggregate weighing accuracy of ± 2%, cement, powder, water and admixtures
weighing accuracy reached ± 1%.
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