Tuesday, October 24 2017

General Description

  • Increase the furnace pull/rate performance
  • Decrease the energy consumption
  • Reduce the furnace pollution dust carry over
  • Reduce the glass level oscillation
  • Reduce the NOx formation

The batch charger is one of the most important pieces of equipment installed in a glass furnace as it has an important influence on the performance of the furnace.

Glass Service has developed a range of batch chargers including a screw batch charger.

Screw batch chargers are normally installed in the back wall of the furnace through a refractory block. The mechanism is installed on a welded steel frame with four wheels which travel on rails for easy positioning and removal.

The batch charger comprises the following main components:

  • Rails

  • Supporting frame realized with steel profiles

  • Feeding hopper

  • Screw with special external coating

  • Feed tube

  • Refractory protection for the screw nose

  • Drive system with AC servo-ventilated motor and gearbox

Batch loading is carried out by means of a steel screw with special external coating to avoid wearing.
Batch is loaded via the feed hopper and is fed by gravity into the feed tube onto the feed screw (manufactured from steel with a special coating to minimise wear) which in turn charges the batch into the furnace.

The screw is actuated by a three-phase asyn-chronous electric motor coupled to a speed reducing gear unit. The motor is controlled by an inverter located in the main control board, driven by a 4-20mA signal from the glass level control, thus ensuring a continuous and smooth regulation of the charging rate.

The drive includes large diameter conical roller bearings and a system to prevent batch damaging the bearings, etc.

Machine drawing
Machine drawing

TECHNICAL FEATURES

Model

 

INF CR R 270/1250 040 AA

Type

 

Refractory head

Feeding tube inner diameter

mm

270

Screw diameter

mm

250

Screw pitch

mm

150

Gear box ratio

 

1 to 171.5

Motor speed

rpm

1430

Screw speed

rpm

8.3

Flow rate

Kg/min

7.5 to 37

 

Material being handled

 

Glass batch - Cullet only - Glass batch & cullet

Max cullet size

mm

25

Moisture content

 

0,5 to 3 %

 

Main motor power

kW

1.5

Electric power connection

 

3Ph + E / 400 VAC 50 Hz

Dimensions ( L x H x W )

mm

2800 x 2000 x 650

Weight

Kg

-

Gallery