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Constant
feed allows the block machine's full potential to be attained all the
time, reducing rejects and the need for machine supervision.
Constant Feed
is incorporated as an option in the BatchTron-II and
III controllers. Instead of merely dumping a new batch into the
machine hopper, we feed it in at a carefully controlled rate, holding the
level constant. The block machine receives mix at a constant
pressure, giving even feed into the mould. This improves the quality
of the product.
- Consistent
product at all times
- Less
supervision and machine adjustment
- Eliminates
rejected product as a result of poor mould filling
- No-contact
sensor requires no cleaning or maintenance
- Totally
automatic and self-tending
Constant Feed
requires a
holding hopper under the mixer discharge plus a conveyor belt to the block
machine hopper. A level sensor measures the level in the machine
hopper, sending a signal to the BatchTron controller which in turn
controls the conveyor motor, speeding it up or slowing it down to match
the rate of usage in the block machine. The result is constant level
in the machine hopper, which guarantees the optimum conditions for block
making..
The sensor
A
special ultrasonic level sensor is mounted above the machine hopper.
Its self-learning feature allows it to be set up in any bin with an
absolute minimum of adjustment. Its output signal tells the
controller what the level is in the hopper, allowing it to be adjusted to
the correct height.
The conveyor
Any belt conveyor
which uses a three phase electric or pneumatic drive can be converted by
means of a VFD (variable frequency drive) or pneumatic proportional
controller. This regulates the speed of the belt to fill the hopper
at the same rate as the material is used.
The controller
Constant Feed
is normally supplied as part of the BatchTron
batch controller, where it is a low cost option. If you don't have a
BatchTron, it can still be provided in a small stand-alone PLC at modest
cost.
The batching process
The BatchTron
controller delivers mixed concrete to the holding hopper when its level
falls below a set height, as measured with a simple electrical
probe. The conveyor belt runs the mix from this hopper to the
machine hopper. The holding hopper and mixer must be capable of
providing a relatively uninterrupted flow of material between batches.
The cost
Since every block
and paver plant is different, prices will vary. Use our direct
response form below for a fast estimate with no obligation.
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Last updated
July 24, 2010
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