KARYASIDDHI ENVIRONMENTAL ENGINEERING CO.PVT.LTD.

Andheri, Mumbai, Maharashtra

Double Flap valves find their application as a substitute of Rotary Airlocks i.e. to allow flow of dust and maintain airlock across the valve. It is particularly suitable for handling highly abrasive and gritty materials along with high vacuum across the valve. Two small hoppers are mounted in-line and with some space between them in an air-tight casing. Two sets of flaps/ cones seat against the discharge openings of the hoppers.

The flaps or cones are held on arms that are fulcrummed on two shafts. The shafts are provided with external counter weights to counter balance the weight of flap or cone, the connecting arms and also the material pressure on top. The counter weight is so selected that the flaps / cones close tightly against the seat rings fitted at the discharge end of the hoppers to avoid leakage. The flap/ cone mounting on the connecting arms self aligning type to make the sealing airtight. For cone dump valve, the seats are sometimes provided with additional rubber rings to ensure leakproofness.

The drive mechanism of these valves comprises of a geared motor with cam or linkage that alternately turns the two shafts by some degree. This results in partial lowering of the flap pair or cone at two levels alternately. Thus, as the top flap/cone lowers, material above it drops to fill the intermediate chamber. Now the top flap/cone closes and after some pause the bottom flap/cone opens to allow the material to pass out of the valve. The above mechanism ensures that any one flap/cone remains closed at any point of time thereby ensuring airlock across the valve.

Applications

Steel Industry Blast Furnace, Electric Arc Furnace, BOF, etc

Fertilizer Industry Phosphate Rock Dryers & Calciners, Dryers

Non-Ferrous Copper Reverberatory Furnace, Laea Blast Furnace

Pulp & Paper Lime Kilns, Back Liquor Recovery, Bark Boilers

Sugar Industry Boiler Flue Gas, Bagging Section

Mineral Products Asphalt Stone Dryers, Cement Kilns

Pharmaceuticals Tablet Coating Fans, etc

The unit is designed to provide a flexible air seal, allowing larger particles to easily pass through the valve while maintaining its air seal. Bolting arrangement on side plate allows service or change-out of the reinforced rubber vane tips without removing the entire unit from the system.Components of a rotary feeder include a rotor shaft, housing, head plates, and packing seals and bearings. Employing Karyasiddhi make rotary airlock

on your dust collection system allows for continuous operation without the need to shut down for barrel removal or lost labor time for barrel change outs. A rotary airlock can also minimize employee exposure to dust while making your system less susceptible to material back-up and damage.

Applications

Steel Industry Blast Furnace, Electric Arc Furnace, BOF, etc

Fertilizer Industry Phosphate Rock Dryers & Calciners, Dryers

Non-Ferrous Copper Reverberatory Furnace, Laea Blast Furnace

Pulp & Paper Lime Kilns, Back Liquor Recovery, Bark Boilers

Sugar Industry Boiler Flue Gas, Bagging Section

Mineral Products Asphalt Stone Dryers, Cement Kilns

Pharmaceuticals Tablet Coating Fans, etc