Prospekt TF-englisch.indd - Steinle Industriepumpen GmbH
Prospekt TF-englisch.indd - Steinle Industriepumpen GmbH
Prospekt TF-englisch.indd - Steinle Industriepumpen GmbH
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© 2/2007 <strong>Steinle</strong> <strong>Industriepumpen</strong> <strong>GmbH</strong> - Series <strong>TF</strong> / Änderungen vorbehalten<br />
Filter presses<br />
with STEINLE-pump station<br />
Automatic adaption<br />
When slurry is transfered to a chamber fi lter<br />
press, fi rst the chambers get fi lled while the<br />
pressure tends to zero. Under an increasing<br />
fi lling-level the solids assemble at the fi lter<br />
cloths. This requires a pressure that continiously<br />
rises with the increasing content of<br />
solids. Under an constant fl ow quantity the<br />
pressure would rise extremly fast.<br />
The drive of the <strong>Steinle</strong> charging pump by<br />
compressed air causes a diminution of the<br />
fl ow quantity according to the increasing<br />
counter-pressure in the fi lter press. This<br />
produces a soft fi ltration curve, automatically<br />
self-regulating according to the fi lling-level of<br />
the fi lter press. This is independent from the<br />
properties of the slurry. No pressure tank nor<br />
pressure transmitter nor speed control are<br />
required. The complete pump works without<br />
electric energy.<br />
End of fi ltration process<br />
When the fi lter press is fi lled with solids so<br />
far that no more slurry can be taken up, the<br />
pressure / flow rate<br />
16<br />
14<br />
12<br />
10<br />
8<br />
6<br />
4<br />
2<br />
0<br />
Accessories<br />
– Stroke Sensors<br />
– Solenoid Valves<br />
– High pressure Pulsation Dampener<br />
Filtration time<br />
pressing period is terminated. The air operation<br />
of the Tapfl o pumps then reduces the fl ow<br />
rate to zero while the outlet pressure holds<br />
the required level compressing the fi lter<br />
cake. Excellent results in drying are obtained.<br />
At the end of the pressing period the pump<br />
simply stops.<br />
Pressure adjustment<br />
The required pressure in the fi lter press is<br />
comfortably adjusted by the height of the air<br />
pressure supplying the charging pump. For a<br />
required pressure of 12 bar the pumps has to<br />
be supplied with 6 bar, when the type <strong>TF</strong> with<br />
a pressur transmission of 1:2 is applicated.<br />
Low air consumption<br />
The <strong>TF</strong>-pumps need the maximum air quantity<br />
only during the fi lling period. The more<br />
the press is fi lled, the more slowly the pump<br />
works. So the air consumption slowly reaches<br />
zero during progressing fi ltration.<br />
Typical graphic representation of a filter process<br />
Pressure P<br />
Flow rate Q<br />
1 2 3 4 5 6 7 8 9 10 11 12<br />
– Air treatment Device<br />
– Pneumatic Level Control Unit
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