Airlocks

Airlocks for Cyclone Systems

Airlocks play a critical role in establishing a stable vortex within cyclone systems, whether they operate under positive or negative pressure. When process gas enters a cyclone, it can exit either through the bottom discharge or the top outlet. For a cyclone to work properly, the process gas must exit through the outlet and the particulate must exit through the discharge. They serve to prevent contamination of the gas flow by acting as barriers, ensuring that process gas does not escape through the bottom of the cyclone and instead exits through the outlet pipe.

How Airlocks Affect Positive vs. Negative Pressure Systems

Example of the path gas will take in the vortex of a cyclone dust collector.

Positive Pressure Flow

In this scenario, the fan is positioned before the cyclone, creating a positive pressure system. An airlock device directly below the discharge acts as a crucial barrier that prevents process gas from escaping through the bottom of the cyclone. This setup promotes the formation of a double vortex, efficiently directing clean process gas through the outlet while ensuring particulates exit through the discharge.   

Negative Pressure Flow

To create a negative pressure flow, the fan is placed after the cyclone, pulling gas through the system. The airlock then prevents gas from flowing up through the discharge, ensuring proper gas intake at the inlet for effective cyclone operation. 

Types of Airlocks

3d model of a standard dust receiver and its assembly.

Rotary Airlocks

Among the most prevalent for cyclones, a rotary airlock can be used for most applications and for standard temperatures. A rotary airlock enables seamless particulate removal during cyclone operation while maintaining a secure seal beneath the cyclone.

d model of a spinout dust receiver and its assembly.

Double Dump Valves

The double dump design is useful for applications involving large amounts of collected material or when cyclones are operating at high temperatures. 

3d model of a standard dust receiver and its assembly.

Slide Gates with Storage Device

This type of airlock device integrates a sealed collection vessel beneath the cyclone. A manual or automatic slide gate separates the cyclone discharge and the top of the collection vessel. This allows the vessel to be isolated from the cyclone and emptied without the need to stop the flow of process gas through the cyclone. The vessel can range from a basic 55-gallon drum with a lid to a custom-designed container.

Equipment Accessories & Options

metal bar stock at the Heumann Environmental fabrication shop

Materials of Construction

Find the ideal metal for your project with Heumann Environmental’s expert guidance, from carbon steel to specialty alloys.

3d model of a turnkey scrubber system with an industrial stack for venting exhaust

Stacks

Optimize emissions control – custom stack solutions, built for compliance, durability, and seamless integration into turnkey systems.

d model of a spinout dust receiver and its assembly.

Dust Receivers

Standard, spinout, or straight wall receivers for diverse applications.

A 3d model of a scroll outlet, and its location on a cyclone system for dust collection.

Scroll Outlets

Optimized gas flow, safety integration, and space efficiency for seamless cyclone system performance.

Offering turnkey duct solutions for seamless process system integration with Heumann Environmental particle separation devices.

Ductwork

Comprehensive, turnkey ductwork systems or replacement components for your dust handling process.

Cyclone Arrangements

Multiple-cyclone arrangements for tackling high particulate loads and spatial constraints.

Innovative Engineering for Enhanced Performance

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