|Screw 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 – Square or rectangular in shape with sloped bottom and limited storage capacity Bin – Square or rectangular in shape with sloped bottom and large storage capacity Silo – 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. NS STEEL designs and manufactures three types of screw feeders: Variable or Stepped Pitch Screw Feeder Variable or Stepped Pitch The pitch of the screw varies from shorter to longer as the screw progresses toward the discharge of the screw feeder. With variable pitch, every pitch increases in length in the inlet section creating more available volume for addition of bulk materials from the hopper. With stepped pitch the flight pitch changes in increments. For example, a stepped pitch screw feeder may have 2-feet of 1/3 pitch, then 2-feet of 2/3 pitch in the inlet section. |Screw Feeders Manufacturer In Vadodara| |Screw Feeders Manufacturer In Mumbai, Maharashtra| |Screw Feeders Manufacturer In Ahmedabad, Gujarat, India| |Screw Feeders Manufacturer In Karnataka| |Screw Feeders Manufacturer In Uttar Pradesh| |Screw Feeders Manufacturer In Delhi, India| |Screw Feeders Manufacturer In Gujarat|