DA and TE Series Feeders

TE (Totally Enclosed) Feeders for general purpose use or DA (Dual-Air) feeders with air-assisted fluidizing feature.

DA and TE Feeders
  • Dual-Air (DA) Feeder
  • Totally Enclosed (TE) Feeder

Features

The FLSmidth DA (Dual Air Inlet) Feeder is recommended for delivering dry, pulverized or granular materials into high or low velocity pressure pneumatic conveying systems. The feeder is equipped with an air-assist fluidizing feature to assist material discharge.

The DA Feeder introduces material into the conveying system at highest volumetric efficiency when material flow into the feeder is controlled to permit free venting. The feeder may be used under a head of material when appropriate aeration is provided to create a path for relief of the reverse air flow.

 

Operation

In operation, air enters a single inlet and passes into the rotor pocket through two ducts integrally cast in the end plates, assuring complete fluidization and discharge. High efficiency is attained through the combination of gravity and air-sweeping of the fluidized material into the conveying line. This design principle assists greatly in discharging materials which have a tendency of hanging up in the rotor pockets.

The DA Feeder permits the use of smaller sized components and related equipment in pressure pneumatic conveying systems resulting in savings in initial equipment cost, installation cost and space requirements. Available with or without motor drive, discharge pan and support base.

Specifications

Body
The DA Feeder is constructed of machined #50 cast iron and incorporates a deep packing gland, outboard anti-friction bearings and an extra heavy shaft. Lantern rings are provided to permit use of purge air when handling fine, powdery material to prevent contamination of shaft packing.

Rotor
The DA Feeder cast iron rotor features eight (8) equal pockets with volumes up to 1.6 cubic feet ( .05m3 ) per revolution. Rotors with beveling on the trailing edge are recommended for handling materials that have a tendency to smear.

Pressure
The DA Feeder is designed for pressure differentials up to 18 PSIG (1.27 Kg/cm2 ).

Motor Mounting
Motor support lugs are cast as an integral part of the feeder body to permit themounting of a gear motor directly on the units, resulting in a compact package requiring minimum space.

Motor
The DA Feeder with motor is equipped with a three-phase, 230/460 Volt AC, 60Hz, TEFC, right angle motor unit. Sprocket and chain assembly with protective guard is included. Discharge pan and support base are optional and available at additional cost.

TE Feeder w/Closed-End Rotor

FLSmidth "TE" (Totally Enclosed) Rotary Feeders (airlocks) with Closed-End Rotors are designed to meter dry, pulverized or granular materials; or serve as airlocks for pressure and vacuum pneumatic conveying systems. Feeders are available in capacity ranges to meet most plant requirements for vacuum, pressure and general-purpose applications.

The closed end rotor eliminates the need for close clearances between rotor ends and end plates and is advantageous when handling materials that have a tendency to smear or build up such as resins and petrochemical.

FLSmidth manufactures three (3) types of TE feeders with closed end rotors:

  • Type I Body end plates constructed of #50 cast iron with fabricated steel rotor
  • Type II Body and rotor constructed of type 304 stainless steel with aluminum end plates
  • Type III Complete 304 stainless steel (body, rotor and end plates)


Body and End Plates
The body and end plates have heavy-duty construction and permit minimum rotor clearances. Motor support lugs are cast as an integral part of the body, and permit the mounting of the gearmotor directly on the unit, resulting in a compact package.
The end plates have integral-cast outboard bearing supports and male-female joints between end plates and feeder body ensuring concentricity.

Rotor
All rotors are beveled and constructed of type 304 stainless steel or fabricated steel. Rotors have six or seven vanes with at least four vanes in seal between inlet and outlet. Bearings are shielded, anti-friction and mounted on rotor shaft outboard of the packing gland.

Motor Mount & Drive
Gearmotors are mounted directly to feeder body. Fractional gearmotors are TENV. Integral horsepower gearmotors are TEFC. All gearmotors are 3 phase, Volts AC, 60 Hz.

Special Notes
All standard TE Rotary feeders (airlocks) are designed to handle material having maximum temperature of 150°F (65°C). Above 150° F to 450° (65°C to 232°C) requires additional periphery clearance.

 

TE Feeder-closed end
Brochure

 

TE Feeder w/Open-End Rotor

FLSmidth TE Rotary Feeders with open end rotors, are designed to meter dry, pulverized and granular materials or to serve as airlocks for pneumatic conveying systems. Feeders are available in capacity ranges to meet most plant requirements for vacuum, pressure and general purpose applications.

Body and End Plates
The body and end plates are heavily ribbed and constructed of #50 cast iron. Motor support lugs are cast as an integral part of body and permit the mounting of the gearmotor directly on the unit, resulting in a compact package. The end plates have integral cast outboard bearing supports and male-female joints between end plates and feeder body ensuring concentricity.

Rotor
All rotors are constructed of machine #50 cast iron and have six or eight vanes with four vanes in seal between inlet and outlet except for the 2" totally enclosed feeder (airlock) which has four vanes.  The rotor shaft has a tapered hub to reduce friction from trapped material between rotor and end plates. Anti-friction bearings are shielded, and mounted on rotor shaft outboard of the packing gland.  Beveling of the rotor vane is recommended if the material has a tendency to build up and smear.

Motor Mounts
All gearmotors are mounted directly to feeder body except the 2" and 5" (50 mm and 125 mm) TE Feeders which incorporate a single common steel base plate.

Motor Drive
All fractional gearmotors are TENV. All integral horsepower gearmotors are TEFC. All gearmotors are 3 phase, 230/460 Volts, 60 Hz.

Special Notes
All standard feeders (airlocks) are designed to handle material having a maximum temperature of 150°F (65° C). Above 150°F (65°C requires additional periphery and end clearances. From 700°F to 900°F (371°C to 482°C) requires additional clearance and water cooled shaft. Above 900°F (482°C) and not in excess 1200°F (650°C) requires ductile iron construction, special bearings and water cooled rotor.

 

TE Feeder-open end
Brochure