Saksham Industrial Engineers

Rotary air-lock valves/dischargers:

• Available in Cast Iron as well as fabricated construction.
• Various rotor configurations.
• Special valves for abrasive duty conditions
• Airlock available for pressure diffrential.
• Drop thru/off-set/blow thru designs available.

Rotary Airlock Valve is compact equipment which can provide controlled & continuous discharge of Powdery or granular material under gravity. Rotary Valve consists of a Rotor with Pockets and controls the feed by regulating the Rotor speed and filling ratio of pockets. Rotary valves have a very wide range of application and they are used to control the flow of the bulk material and dose the material proportionately.

Features:

• Available in Drop Through and Blow Through options
• Produced in Cast Iron to provide better accuracy and air locking
• Available with application suitable tips
• Controlled product flow rate (fixed or variable)
• Maintain a differential pressure between the inlet & outlet (airlock)
• Suitable for various powdery and granular materials
• Acts as a process isolator

Applications:

• Dosing the material from a silo to a weigh hopper or conveying line
• Maintains airlock between a screw conveyor and conveying line
• Maintains airlock between a mixer and conveying line
• Smooth discharge of product from a hopper
• Blow through Rotary Valves used for accurate pneumatic conveying

Major Sectors:

• Dry Premix & Building Materials
• Paint and Putty plants
• Food Processing
• Plastics
• Chemicals
• Detergent

A Rotary Feeder (also known as a rotary valve or rotary airlock) is a type of mechanical device used in bulk material handling systems. It functions to control the flow of materials from one part of the system to another, often between different pressure environments. It is widely used in various industries, including agriculture, chemical processing, mining, and food production.

Key Components:

1. Rotor: A rotating cylinder or drum with pockets or vanes. As it turns, it transfers material from the inlet to the outlet.
2. Housing: A cylindrical or rectangular enclosure around the rotor, containing the material as it is fed.
3. Inlet and Outlet: Openings where the material enters and exits the feeder.
4. Drive Mechanism: Typically an electric motor that powers the rotation of the rotor.
5. Seals: These help to maintain pressure and minimize air or material leakage.

Working Principle:

A rotary feeder works by rotating the rotor, which collects material from the inlet, transfers it through the pockets or chambers, and discharges it at the outlet. The rate of material transfer depends on the rotational speed of the rotor and the size of the pockets.

Applications:

• Dust Collection Systems: Helps remove dust by discharging it from hoppers while maintaining an airtight seal.
• Feeding Systems: Used to accurately feed bulk materials like grains, chemicals, or minerals into process equipment.
• Airlocks: Acts as a seal between areas of differing pressures, such as between a high-pressure pneumatic conveying system and ambient conditions.

Types of Rotary Feeders:

1. Standard Rotary Feeder: Common in most bulk material handling operations.
2. Blow-Through Rotary Feeder: Has an integrated air stream to blow materials through the system.