A bag filter housing is a receptacle that stores filter bags used to remove pollutants, sediments, and particles from liquids under pressure. Liquid enters the bag housing from above and flows from within to outside the filter bag. Dirt is trapped within the filter bag, allowing for clean removal and disposal. To support the filter bag, insert it within a perforated basket.
All housings have a perforated basket for holding filter bags and a bag hold-down plate to keep the bag in place within the filter housing. Today, we will look at different types of filter bag housings.
Types of Bag Filter Housings
Single Bag Housings
These filter housings are ideal for small-scale applications requiring attention to quality. Single bag housings employ a single filter bag to remove dirt and particles, large and tiny, from fluid in a system. Bags come in a variety of fabrics, all of which are sturdy and absorbent. Once the bag is full, it must be removed and replaced. Luckily, filter bags are affordable and available in large quantities, so running out is rarely an issue!
One of the few true disadvantages of single bag filter housings is that liquid flow must be interrupted to change the bags. This can bring a system to a total standstill for a few minutes, although most small- to medium-sized applications are unaffected by changeouts. The major advantage of single bag housings is that they are the most affordable choice. They are less costly and less complex!
Multiple Bag Housings
Multi-bag filter housings, as the name implies, hold numerous bags at once. These are ideal for bigger applications requiring high flow and a system that cannot be turned off. They allowed more fluid to flow through a system at once, sometimes employing more than 50 bags. This is 50 times the flow rate of a single bag housing. The nicest thing about multi-bag housings is that they can continue to function while a bag is replaced. Simply open the seal, remove the entire filter bag, and replace it. You don’t even have to halt the flow through the housing!
The most significant difference between single and multi-bag filter housings is pricing. Depending on the brand and type, multi-bag housings might be many times more expensive than single-bag units. For some, this expense may be required. This is especially true if the person acquiring the housing is seeking a filter for a 24-hour operation. Multi-bag housings are ideal for applications requiring strong flow and consistent service.
Duplex bag housing (duty and standby)
Duplex Bag Housings with Duty/Standby configurations allow the operator to adjust the flow direction to either housing. This is accomplished by valves put on the inlets and outlets, or three-way valves on smaller systems. This is essential for applications that demand continuous filtering without interruption. Bag Filter Housing has pre-installed switch-over valves to prevent process disturbance during maintenance. Filtration may be readily switched to standby mode using butterfly valves.
Conclusion
Bag filter housings are simple but powerful tools for liquid filtration. Whether you choose a single, multi-bag, or duplex housing depends on your specific needs. Each type offers its own benefits in terms of cost, convenience, and capacity. Understanding these options will help you keep your systems running smoothly and efficiently.