AOpen DE7200 Series Instruções de Operação descarregar pdf (Página 48)

OPERATING INSTRUCTIONS

4-10 30 Sep 13

DE-7200VFDCentrifuge

Pond Depth (Cont’d)

Six adjustable weir plates are provided on the liquid bowl head to facilitate setting the pond depth;

all ports must be set identically. A deeper pond depth (move weir plates toward 380mm)

increases settling time by permitting more liquid to remain in the bowl. However, a deeper pond

depth also reduces the beach area at the solids discharge end of the bowl, which will result in a

wetter solids discharge.

The weir plates may be adjusted to provide a liquid depth ranging from 380mm to 460mm (Figure

4-3). This numerical range represents the inside diameter of the fluid ring. As shown, the beach

length will vary from 36.2mm to 234.7mm, depending on weir opening. Raising the liquid depth

reduces the beach length, and lowering the depth lengthens the beach. For example, to obtain

the lowest liquid level the weir plates are set at the bottom notch on the weir gage plate. At this

setting, the resulting liquid level is 380mm, and the corresponding beach length is 206.4mm. By

moving the weir plates upward to the top notch, however, the liquid level rises to 460mm and

liquid fully covers the beach.

Figure 4-3. Pond Depth Versus Beach Length

1 2 ... 43 44 45 46 47 48 49 50 51 52 53 ... 166 167

Sem comentários

AOpen DE7200 Series Instruções de Operação Página 48