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Pressurised Screw Feeder

Conveying Solution

"Pressurized Screw Feeders are mechanical continuous conveyors, where material to be conveyed is moved inside a closed trough by rotating shaft with additional flights"

Description for the Pressurised Screw Feeder.

SALIENT FEATURES:-

  • The feeder trough in pressurized screw feeders is manufactured as a torsionally rigid sheet metal housing made of standard section lengths with connecting flanges, to which are bolted sturdy cover plates.
  • There is also an inspection flap above the Casings, Drive Unit & Driven Unit.
  • Abrasive materials can be handled by using manganese alloy steel, hard surface welding, fusion-cast basalt linings or material padding.
  • Split end walls are bolted to the ends of the trough. This makes it easy to dismount the screw shaft once the metal cover plates have been removed.
  • Intermediate supports are only required about every 6 meters. They are supplied loose for mounting during assembly.

Ø  The shaft exit points are usually sealed by gray cast iron stuffing boxes.

Ø  Special Sealing Chord and sealant is used in order to maintain the pressure.

  • The screw shaft is designed as a solid shaft or a rigid tubular shaft with integrated end journals and a welded-on screw thread.

Ø  The end bearings are pedestal bearings with antifriction-bearing inserts.

Ø  When a screw shaft requires intermediate bearings for longer conveying distances. These are designed as easily replaceable units, the torque is transmitted by bolted couplings.

  • We supply a plain bearing as standard with replaceable two-part, gray cast iron bearing shells. They can be set up for grease gun or central lubrication according to the operational conditions
  • On request, we also supply antifriction bearings with split roller bearings in a sealed, grease-filled suspended housing.
  • The drive comprises a standard geared motor unit.

Classification of Pressurized Screw Feeders :-

1) On the basis of Conveying Direction:-

  • Right Hand Spiral
  • Left Hand Spiral

2) On the basis Of Trough Type:-

  • U Type
  • Tubular Type..
  • V Type 

3) On the basis of Flight Type:-

  • Full Thread
  • Band Thread
  • Paddle Thread

4) On the basis of Shaft Type:-

  • Solid Shaft
  • Tubular (Hollow) Shaft

Pressurised Screw Feeder Specification

Advantages:-

  • Independent Material reception
  • Excessive Feeding
  • Low Maintenance
  • High temperature resistant ( up to 450?C )
  • More than 1 inlet and Outlet possible
  • Back fire chances in CFBC Boiler is averted.
  • Because of closed trough easy fulfillment of safety regulations and environment protection. ( Dust & Dust Proof )

Equipment

Pressurized Screw Feeder

Specification

Range

FROM

TO

Capacity (TPH)

1.5

200

Temperature (?C)

ambient

450

Bulk density  (T/cubic meter)

0.1

1.6

Length (mtr)

1

25

Width (mm)

200

2000

Moister (%)

0

20

Pressure (mmWC)

0

2000

 

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