Solid Metering System (Loss in weight system)
Design, fabrication, supply, testing, commissioning and guarantee of
a solid feed system along with an automated control system for a vacuum furnace
Our system consists of the following –
- Storage hopper of 500 kg in capacity
- Rotary feeder
- Weigh hopper of 20kg in capacity
- Loss in weight system for metering of glass powder consisting of load cells, rotary air lock with AC Variable frequency drive
- Flexible connections between weigh hopper and rotary air lock
- Motorised double flap valve
- Supports for above system and all interconnecting chutes
- Control system
PROCESS DESCRIPTION
The solid feed system is required for feeding glass frit of irregular shapes and sizes into vaccum furnace opening at 5” negative pressure through an airlock feeder system.
The solid feeding system operates on the principle of Loss in weight i.e. controlled material discharge. Material extraction rate through rotary airlock below the weight hopper will continue at whatever rate selected at set point feed rate 3-15 kg/hr (50-250 g/min). The speed of the rotary feeder is continuously varied such as to maintain loss of weight constant i.e at the set feed rate.
When the weight of the material in weigh hopper reaches the preset minimum value, the required material is refilled at a high feed rate of 2ton/hr in few secs. Thus the process is continuous.
The weighing systems will be sturdy and rugged to work in the high temperature expected out door and also to withstand the jerks and vibrations.
