|
Phone: 800-663-2702
or
530-644-6574 Fax:
800-663-8060
or
530-644-6929
Sieve
Bend Screen Selection
The dewatering capacity of
a wedge wire cross flow sieve bend screen is primarily influenced
by the screen width, the slot opening, and the wire size (width). The
chart below shows typical
dewatering capacities in US gallons per minute (GPM) per foot of
screen width. Actual capacity
varies depending on the feed content and desired efficiency.
|
Application
|
Slot
Opening
|
Wire
Width |
GPM
/ FT |
| Coal,
20% solids |
.020"
|
.063"
|
120
|
| Coal,
20% solids |
.020"
|
.093"
|
100
|
| Cranberry
dewatering |
.020"
|
.063"
|
100
|
| Seafood,
plant effluent |
.020"
|
.063"
|
60
|
| |
|
|
|
| Coal,
20% solids |
.040"
|
.093"
|
160
|
| Coal,
20% solids |
.040"
|
.120"
|
120
|
| Vegetable,
primary |
.040"
|
.093"
|
130
|
| Meat
Packing, wash down |
.040"
|
.093"
|
60
|
| |
|
|
|
| Coal |
.060"
|
.093"
|
210
|
| Municipal,
primary |
.060"
|
.093"
|
150
|
| Dairy,
wash down |
.060"
|
.093"
|
120
|
| Wood
Fiber, plant effluent |
.060"
|
.093"
|
80
|
| |
|
|
|
| Vegetable,
waste |
.125"
|
.093"
|
350
|
Screening
efficency and solids capacity are directly related to the length (arc
length). Longer
arc lengths should be considered for feed containing a high percentage
of solids. Screen
curvature and arc length are expressed as a segment of a circle.
60
degree x 30" radius, 31.4" arc length
45 degree x 45" radius, 35.3" arc length
60 degree x 40" radius, 41.9" arc length
45 degree x 80" radius, 62.8" arc length
The
effective range of slot openings for a gravity-fed cross flow sieve
bend screen is
generally considered to be .015" to 1/8".
The
installation angle of a sieve bend screen is usually about 60 degrees
from the horizon.
The point of size separation for this installation angle is
approximately 50% of the slot
opening size.
Industrial
Screen Products, Inc. 1997 - All Rights Reserved
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