What is a Spark Arrestor and How Does it Work?
A spark arrestor is a device that prevents flammable dust from escaping from ignition sources, such as sparks or embers, to filter bags in industrial settings. This helps to reduce the risk of dust explosions or fires. Spark arrestors are particularly important in dust collection systems that handle combustible materials like wood dust or metal shavings.
Types of Spark Arrestors
Centrifugal Spark Arrestors
One common type of spark arrestor is the centrifugal spark arrestor. These arrestors use fixed vanes or baffles to create a swirling motion in the exhaust stream. This swirling motion throws sparks and other heavy particles outward, where they are separated from the lighter dust particles that pass through the filters.
Applications of Spark Arrestors
Exhaust Fans for High Gravity Dust
Spark arrestors are often used in conjunction with exhaust fans for powder separation or recycling, particularly when dealing with high gravity dust. High gravity dust refers to dust particles that are denser or heavier than typical airborne dust. These particles can be more difficult to capture in filters, and spark arrestors can help to ensure that they are safely removed from the exhaust stream.