Furnace equipments products

Scoop type batch charger

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 with several models and sizes to suit different types of furnace, specific glass production and furnace sizes.

For each furnace and glass type, selecting the correct batch charger and charging method gives a number of advantages:

Increase the furnace pull rate

Decrease the energy consumption

Reduce the carryover

Reduce oscillations in the glass level

Reduce the NOx formation

Batch chargers
design

The Glass Service batch chargers are robustly designed and constructed to operate continuously in the arduous environment of the doghouse.

For the 24h/7days operation the design is optimized for quick and easy maintenance. The use of quick release components and simple mechanisms make maintenance quick and easy. The correct sizing of the batch charger reduces the oscillations in the glass level and increases the precision of the glass level loop control. The correct and constant glass level increase the productivity throughout the forming process.

The Glass Service batch chargers operate with a fully sealed doghouse which reduces NOx by reducing the ingress of parasitic air.

Scoop type batch charger

The main concepts behind the development of our batch chargers are simplicity, flexibility and reliability. These machines can be easily adapted to a wide range of pull rates and require low maintenance even when operating under heavy working conditions. Our batch charging machine is directly installed and sealed on top of the dog house sidewall blocks, with the following advantages:

The supporting structure is basically a double electro-welded water-cooled stainless steel shield. The scoop machine is available in two versions:

Fixed scoop type

Oscillating scoop type

Main components

The batch charger comprises the following main components:

The oscillating version has the following additional features:

A crankrod mechanism is used to operate the scoop mechanism which is manually adjustable for good control of the raw material flow rate. All machines are fully tested and wired with high temperature cables, components and junction box. To cope with the high temperature environment, the scoop is driven by a class F, self braking motor with invertor which is also fitted with separate air cooling.

Connections scheme

Technical Data

Model INF PO 250-100-AA INF PO 400-180-AA INF PG 400-180-AA INF PG 600-280-AA
Type
Fixed
Oscillating
Scoop width
mm
250
400
400
600
Scoop max. depth
70
Scoop speed range
strokes/min
6 to 30
Crank gear positions
4
Flow rate @ 50 Hz
Kg/min
43 to 98
76 to177
122 to 281
Oscillating angle
-
-
44° (+ 22°)
Number of oscillating position
-
-
2,3 or 5
Material being handled
Glass batch - Cullet only - Glass batch & cullet
Max cullet size
mm
25
Moisture content
0,5 to 3% of water
Main motor power
Kw
1,5
Oscillating moto power
Kw
-
-
0,13
Electric power connetion
3Ph + E/400 VAC 50 Hz
Water cooling requirements
liters/min
120
160
Water colling inlet pressure
bar
2 to 4
Water inlet specifications
Treated industrial water ( 4 French degrees ) 40 ppm calcium content - @ 20 to 35 °C
Water flow control
1 water input thermometer
3 water output thermometer
1 water input pressure switch
3 water output flow switch
1 water input thermometer
4 water output thermometer
1 water input pressure switch
4 water output flow switch
Dimension (LxHxW)
mm
900x635x1230
1050x750x1230
1550x750x1360
1850x750x136
Weight
Kg
325
400
550
600

CONTROL BOARD

The batch charger can be controlled and actuated through a local control board or it may be connected to the main control room by a suitable 4-20mA signal. The control board is of rugged steel construction and is delivered completely wired and tested ready to be connected with special connectors to the batch charger junction box. Two different operating modes are available:

a) Continuous cycle

b) ON-OFF cycle

a) In – Continuous cycle – the machine works continuously and the charging speed is controlled either automatically or manually

In “Automatic mode” by a remote 4-20mA signal (from the glass level control) continuously adjusting the quantity of raw batch charged according to the production needs. In “Manual mode” the charger speed is set manually (1 to 100%) from the AUTO/MAN station located on the front of the control board.

b) In – ON-OFF cycle – an adjustable timer is set by the operator to stop and start the batch charger.

In “Automatic mode” the ON-OFF signal comes from the glass level control. The machine works at the selected speed during the time when the “ON” signal is active and stops during the “OFF” time range. In “Manual mode” the operator can directly set the start and stop timing cycle and the relevant charging speed.

Glass Service can supply to the final customer the complete control solution using the SIL-2 safety application in combustion system for furnace and forehearths.

Technical Features

Model INF PG 400-180-AA INF PG 400-180-AA
Charging Machine Type
Fixed
Oscillating
Menagment and control
electromechanical
PLC
RS 485 Modbus
-
Alarms management
with LED
on PLC panel
Manual mode (0 to 100%)
Remote control signal (4 to 20 mA)
Alarms transmission
free contact
with RS 485
Speed controller
Electronic frequency inverter
Management of oscillating position
-
Timer for each position
Number of machines controlled
1
max. 1
Electric power connetion
3Ph + E / 400 VAC 50 Hz
Dimension (LxHxW)
600x1900x600
600x1900x600