When it comes to collecting dust created from a production line at a facility, it is critical to clean the existing and recently collected dust out of the collection equipment on a regular basis. One of the methods to remove the collected dust is with the help of vibration. Where the vibration is applied, though, depends on the collection system installed. The common installations that we see are:
• Electrostatic Precipitators (ESP)
First, the electrostatic precipitators. These are large systems that are frequently found at facilities like pulp and paper or steel mills, refineries, concrete plants or coal-fired power plants, just to name a few. These systems have a series of wires and plates that act as filters. These filters rely on an electrostatic charge to pull dust particles from the air passing through the collection system. To help the efficiency of the collection of the dust, keeping these wires and plates clean is imperative to the process. This is where a Rapper comes into play. The Cleveland Vibrator 3” PMA Rapper is an air powered piston vibrator that is installed on a mounting plate connected to a shaft to shake the wires and plates. This shaking process breaks the friction of the particulates clinging to the collection media and drops the dust down to the collection hopper underneath. Once the materials is in the collection hopper, an externally mounted piston vibrator or air knocker can help remove the dust from the inside sloped walls of the hopper and to the discharge.
For the baghouse collectors, many of them use pulses of air to clean out the hanging bags on the inside of the system to drop the particulate down to the collection hopper below. Once the material reaches the collection hopper, single impact air knockers or piston vibrators can help clean off the inside sloped walls of the hopper to ensure material reaches the discharge outlet or the feeder underneath.
Lastly, the cyclones. These systems rely on the shape of the vessel and the directional flow of air pushed into the vessel to spin particulate and create a vortex. The gravity of the particulate helps this material drop to the hopper underneath while the cleaned air, which is lighter in density, exits the exhaust vent at the top of the collector. Similar to the baghouse process, once the dust reaches the hopper bottom, a single impact air knocker or piston vibrator can help move that material out of the hopper and to the discharge below.
One of the biggest keys to longer lasting equipment is proper maintenance. Installing a rapper or air knocker or piston vibrator can help keep the collectors clean and running as expected.