FlexFilter is a modular baghouse dust collector consisting of seven interchangeable sections. It can be easily equipped with a wide range of filter media, collection bins and discharge systems. The modules are as follows:
FlexFilter is available in single and twin versions. Its modular design allows numerous model configurations and enables quick and easy replacement of individual modules.
The operation of the FlexFilter is straightforward. The inlet module separates the coarse particles, which then pass into the bottom hopper and fall into the dust collection bin below. Fine dust particles follow the upward airflow and pass through the centre section, where the filter bags are located. The particles are collected on the outer surface of the filter bags.
A long spiral spring inside each filter bag prevents it from collapsing when the air, under pressure drop conditions, passes through the bag from the outside to the inside. Clean air exits the dust collector through the top section.
The pressure drop increases as fine dust accumulates on the filter bags. During the filter cleaning process, part of the dust is removed and falls into the collection bin. It is preferable not to remove all the dust, as a certain amount of fine particles on the filter bags ensures significantly better separation efficiency than perfectly clean bags.
Different types of dust have very different characteristics. Some can be easily removed from the filter bags, while others require a more intensive cleaning action. FlexFilter models with standard cleaning use their own vacuum to generate a short pulse of air that passes through the filter bags in the reverse direction. A pneumatic cylinder located in the upper section of the filter, controlled by the AFC-B control panel, opens a disc valve, allowing atmospheric air to enter the filter and neutralize the internal vacuum. The higher the vacuum level and the larger the ductwork connected to the filter, the greater the volume of air flowing through the filter bags in the opposite direction.
The FlexFilter RF (Reverse Flow) version is equipped with a valve assembly that uses the suction capacity of the central unit to clean half of the filter bags while the other half remains in operation. The RF model is ideal for difficult dust applications or when the vacuum level is insufficient to generate a powerful cleaning pulse for the filter bags. Thanks to its modular design, the upper section can be upgraded from the standard version to the RF version at a later stage, allowing the cleaning method to be adapted to specific operational requirements.
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