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SVL-A, SVL-B, SVL-C, & SVL-D Self-Contained Material Loaders - Venturi Style 24 of 49
adjusted first for optimum flow, as described above. Since regrind material is
typically more difficult to load than virgin material, it will take more compressed
air (a higher setting on the regulator) than virgin material. Once regrind is
adjusted, then the virgin material flow should be adjusted. Notice the flow of
material through the flex hose as both are loaded. The virgin is likely to flow
much stronger than the regrind and may actually choke off the regrind flow,
requiring new settings to balance out the flows to your needs. Keep in mind that
distances, bends, etc. all play a part in effective compressed air settings, so
continue to adjust both levels until satisfactory loading performance is achieved
for both materials.
Note: The SVL compressed air material loader with ratio capability is not intended
to be a blending or metering device for two materials. It can only create air flow
that will allow the conveyance of material to your process. Expectations of any
precision in the loading process will not be achieved.
4-3 Setting the Mixing Ratio of the Components (SVL-C Units)
The mixing ratio of the components is adjusted at the regulators. By changing
the regulator pressure of each material, you will adjust the rate at which each
material is conveyed into the conveyor hopper. This will determine the ratio of
two materials entering a conveyor hopper.
Note: The adjustment of the regulator will vary according to the material, flow
properties, particle size and conveying distance. The ratio of each material is
just an “observed” ratio and there is no guarantee of accurate ratio percentages.