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Features & Benefits

Aerated Style

• No "dead" material
• Self cleaning

Roller Shaped Gate

• Dust tight shut-off
• Smooth operation
• Breaks up lump material

Multiple Aperture Openings

• Accurate flow control
• Linear control

Felt Seal

• Positive seal
• Wiping action to clean roller

Multi-Location Actuators

• Easy installation

Manual Override

• Disengage actuator for emergency closure

Wear Protector

• Virtually no seal maintenance required

Typical Applications

The rotary metering flowgate can control pulverized materials passing 35 mesh. Materials typically handled are:

• Cement raw meal
• Finish cement
• Fly ash
• Limestone
• Gypsum
• Soda ash
• Talc
• Resins
• Ground ores
• Phosphates
• Clay
• Bentonite
• Hydrated lime

Operation

The flow control gate is an element of the Airslide^TM (pictured at right). It consists of an upper chamber (A) - which is the conveying chamber and the plenum (B) - which is supplied with fluidizing air. A fabric permeable to air divides the upper and lower chambers. A roller shaped gate is placed within the upper chamber. The roller is sealed by an exchangeable felt gasket and includes an adjustable aperture for the flow-through of bulk materials. The function of the gate is dust tight cut-off of a silo discharge and infinitely controlled discharge of pulverized material from silos or feed bins.

Rotating the roller in one direction will close the silo discharge opening. When rotating the roller in the opposite direction, the adjustable aperture will control the flow of material. By rotating the roller, it is possible to vary the cross section of the aperture thus controlling the flow rate.