Listing ID #3186959
Company Information
Ask for more detail from the seller
Contact SupplierScrew feeders
screw feeders are designed to meter bulk materials and are typically located at the beginning of a process. Capacity or feed rate can be accurately controlled with screw feeders. Variable speed drives improve metering accuracy and can provide a wide range of feed rates. Screw feeders are available in a variety of sizes, lengths, configurations and materials of construction.
The inlet of a screw feeder is always flood loaded (100-percent). A screw feeder is typically mounted directly to a:
hopper ΓΆ€“ square or rectangular in shape with sloped bottom and limited storage capacity
bin ΓΆ€“ square or rectangular in shape with sloped bottom and large storage capacity
silo ΓΆ€“ cylindrical in shape with cone or mass-flow bottom and large storage capacity
several factors must be considered when designing a screw feeder, including:
flow characteristics of bulk material being stored and metered
density of bulk material in both stored and metered condition
maximum and minimum capacity or feed rate of process
bulk material size with screen analysis
width and length of screw feeder inlet opening
overall length of screw feeder
height of bulk material in hopper, bin or silo
with the screw feeder inlet flood loaded (100-percent), the design of the screw in the inlet area and the screw speed determine the desired capacity or feed rate.
Most screw feeders are less than 20-feet in length because the use of internal hanger bearings is not recommended. In most applications a short screw feeder will meter a bulk material to a screw conveyor for transfer to the next step of the process.