The Brabender Liquid Loss-in-Weight Feeders Range
Brabender’s impressive selection of liquid feeders are suitable for use in many sectors including the food, plastic and chemical industry sectors and capable of handling liquids with both low and high viscosities. Liquid feeders are available with varying feed capacities depending on your requirements. These are split into low (1-1000 l/hr), medium (50-5000 l/hr) and high (100-10000 l/hr).
FDDW Classic Liquid Feeder
The system is made up of three main components:
- The tank or hopper holding the liquid which is weighed.
- The weighing system
- The pump and motor selected to match the liquid and feedrate range required
The FDDW liquid loss-in-weight feeder is fitted with a weighing system built around the DigiMass-2 digital load cell and is capable of measuring even the smallest feed rates. The system can also be supplied in a volumetric version or with alternative weighing systems for special applications.
Liquid systems may require many different options such as heated vessels, quick drain valves and hygienic quick clean designs. All of these can be considered by our team during the project specification stage.
Customised to your feeding requirements
Every liquid feeder is customised to match the products it is designed to handle. The type of dosing pump used by the liquid feeder system is dependent on various characteristics of the liquid - these include density, viscosity, solids content, temperature, reactivity, and toxicological properties. It also depends on the respective process requirements, including accuracy, feed rate, turndown ratio and counterpressure.
The two most common types of pumps available for Brabender liquid feeders are:
A compact and energy efficient pump that offers uniform conveying by means of counterrotating gears. As well as being suitable for highly viscous media such as silicone oils and prepolymers, it is pulsation-free and provides a high degree of feeding accuracy.
Piston Diaphragm Pump
This pump provides piston stroke-based conveying in single, double or treble piston crown configuration. It is low-maintenance through diaphragm monitoring and suitable for low-viscosity media such as water, plasticizers and silanes. It has counter pressures up to 350 bar and a high degree of efficiency.
Other pumps include:
- Hose Pumps
- Rotary Piston Pumps
- Eccentric Screw Pumps
Other Common Options
A number of heated versions are available with Brabender liquid feeders, namely electrical heating, hot water, thermal oil and steam heating.
As an alternative to a loss-in-weight liquid system, a Coriolis Mass Flow Meter can be used in combination with an upstream dosing pump.
Both systems can be connected to the Brabender Congrav control system.