INNOVATIVE

Rotary Airlock

Rotary airlocks are important components of pneumatic conveying, bulk solids handling and batching systems. Rotary airlock is also known as rotary valve, rotary feeder or airlock feeder. The main function of a rotary airlock is to control flow of bulk solids from silo, mixer, cyclone or hopper under gravity, pressure and vacuum conditions. Airlocks can work on pressure and vacuum applications.

Wide range of rotary airlocks are available for different process conditions and physical properties of transferred bulk solids. Abrasive materials, high temperature powders, food products, big sizes granules can be transferred by selecting proper rotary airlock models.

QUALITY

Rotary Airlock Applications

Silo Emptying with Rotary Airlock:

Rotary airlock placed under the silo, hopper or other container system is used to control the bulk solid (in powder or granule form) discharge from these units and feed equipments like conveyor, screw feeder, mixer etc.

Cyclone Discharge with Rotary Airlock:

Rotary airlock placed under the cyclone is used to control the bulk solid discharge from the cyclone under pressure or vacuum and feed equipments like conveyor, screw feeder, mixer etc.

Dust Collection with Rotary Airlock:

Dust collectors, filters, jet pulse filters are used to collect dust from production lines. Rotary valves installed under dust collection systems, are used to unload the dust.

Dosage Control, Mixing, Batching with Rotary Airlock:

Rotary valves can be used to control the amount of discharging of bulk solids. By controlling the rotor speed of airlock, volumetric measurement is possible for both powdered and granule type bulk materials. Volumetric feeding of mixers or containers are possible.

Pneumatic Conveying Systems with Rotary Airlock:

Rotary airlock valves are used to feed pneumatic conveying lines from silo, hopper, cyclone, big bag discharge stations etc. Rotary feeders prevent air leakage from conveying line and maintains constant feeding of powders or granules.

Conveyor Feeding / Discharging with Rotary Valves:

Conveyors can be fed from silos, hoppers or other containers with the help of airlocks. Bulk materials discharged from conveyors can also be fed into airlocks and then sent to another equipment like pneumatic conveying line, mixer etc. Used widely in baghouse filters and ESP systems.

Screw Feeder Feeding / Discharging with Rotary Valves:

Screw feeders can be fed from silos, hoppers or other containers with the help of airlocks. Bulk materials discharged from screw feeders can also be fed into airlocks and then sent to another equipment like pneumatic conveying line, mixer etc.

Production Line Feeding with Rotary Valves

Bulk Solids Processing Equipment Feeding / Discharging with Rotary Valves:

In several industrial processes, bulk solid processing equipment can be fed or discharged with the help of airlocks. Boiling, cleaning, surface treatment, mixing, crushing processes are some of the examples that need rotary valves. Rotary airlock valves isolate the process from external conditions.

Bulk Solid Filling:

Several bulk materials are filled into bags, sacks, big bags, containers or drums by volumetric metering with the help of airlocks.

Handled Materials by Rotary Airlock

Cement, calcium carbonate, ash, plastic pellets, pvc, fly ash, coal, coal dust. wheat, flour, barley, feed, seed, corn, chickpea, bean, sesame, rice, rice flour, dried fruit, nuts, peanut, almond, sunflower seed, cotton seed, grain cereals, chestnut, coffee grain, coffee powder, sugar, salt, spice, glass powder, marble powder, sawdust.

Atex Certified Rotary Airlock Valve

Atex Certified Rotary Valves

Powdered bulk solids which have explosion risk, have to be handled with care. Temperature, static electricity, spark and ignition sources are to be isolated from these bulk solids. Atex approved rotary valves are used in such applications where the dust explosion risk exist. Polimak Atex series rotary valves are certified with 10 bar explosion tests. All components of rotary valves comply with Atex regulations and provide ex-proof characteristics. Ex-proof electrical motors, Atex certified sensors, low friction bearings are used in these rotary airlock valves to ensure process and environment safety.

Coal powder, sugar powder, raw materials of paint and similar bulk materials are flammable and explosive in certain conditions. Ex-proof and Atex certified equipment are to be used to prevent dust explosion risks. Polimak rotary airlock valves are designed to conform explosion isolation regulations.

Rotary Airlock Brochure

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Rotary Airlock Models

Wide range of rotary airlock models and configurations are available for different process conditions and physical properties of transferred bulk solids. According to process (silo, cyclone, jet filter, conveyor, pneumatic conveying system etc.) ; according to bulk material (fine powder, granule, abbrassive, elastic, high temperature etc.).

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Rotary Airlock Accessories

Polimak provides its customers with state-of-the-art accessories that help improve the already existing bulk solid handling equipment. Most of our accessories are available in different shapes and sizes so that their functions can be adopted to a wide range of equipment.

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Polimak Smart Rotary Feeder

Process and manufacturing industries such as cement, agriculture, food, chemicals, plastics and many others rely on rotary feeders to facilitate efficient bulk material flow. Facilitating efficient bulk material flow requires uninterrupted operations, unfortunately, operational issues can arise.

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