Brief Guide: The Role of a Cartridge Filter

A cartridge filter is a modular sieve which aids to separate debris or chemical impurities from fluids. It comprises of various materials relying on the category of filtering process required. When searching for pleated filter element for older version filters, you will realize that the device has a cylindrical housing. The purpose of the housing is to handle the liquid’s pressure during filtration.

Dimensions of Cartridge Filters

These devices have diameter or lengths that are standard. The reason behind searching for pleated filter element is to ensure that the equipment fits impeccably inside any housing that meets the standard. Typically, a cartridge filter gets crafted with a single house. It is to assist the liquid to continue flowing with ease.

When a duplex system requires the device, two of them have to sit in a parallel manner. The significance of such a design is to make sure that one unit is working while the other goes offline for cleaning procedures, then resumes and takes over the work of purification as the exhausted filter awaits cleaning.

There is the availability of varying unique cartridges that can fit every category of porous filtering media. They fall under two classes according to the method of construction and you need to be mindful of their design and uniqueness of purpose.

Inbuilt Porous Cartridge Filters

These sieves come with an integral part of porous that has a cylindrical design.

Optional Porous Cartridge Filters

These kinds of filter media cannot use porous, but there is a way of enabling them if the need arises. It involves identifying the type of porosity and making use of objects like rings, discs, and ribbons to achieve functionality.

Types of Base Filter Elements

Basket Strainers

They work as a filter component.

Filter Bags

These objects are crucial filtering components.

Filter Candles

These are the most significant filter elements.

Membrane Modules and Self-cleaning Filters

The filters have functionality that enables them to wash out impurities after the filtration process is complete. Some of the replaceable element filters include capsule filters that are commonly present in small scale industrial processes and the laboratories. Also, these devices help workers in pharmaceutical industries and the science of life occupations. The second replaceable kind is called the polymer melt element filter. The function of the equipment is to prevent the polymer fibres and filaments from blocking or forming extrusion nozzles.

Reasons Why You Require a Cartridge Filter

Purification Process

The primary role of this equipment is to clean impurities from fluids that have any contamination. Such filters easily clean impurities that weigh lower than 0.01%. The work models of a cartridge filter are either through the surface or deep filtering. The element in the equipment is necessary for the collection of unwanted particles. The surface filters grading system is concurrent with absolute ratings, whereas depth filters grading mechanism is concurrent with filtration efficiency.

There has been news of nominal filtration that involves percentages ranging between 80-90% for various declared particle sizes. Absolute rating requires rates varying between 98-99.99%, which is efficient enough.

Types of Filtration

Surface Filtration

It mostly involves particle retention on a surface. A layer forms after the debris settles called the “cake layer,” which aids in adding to the effectiveness of filtration. For example, when you have a filtration rate initially ranging between 50-60%, the formed layer of cake will make it grow until it reaches 100%.

The medium of filtration is a membrane that is either a permeable membrane or a semi-permeable membrane. It is arranged in a manner to gather a small or massive amount of the material suspended across the suspension’s flow.

The filtration procedure will occur upstream of the medium’s surface if the filter’s sheath is thin and the pores only allowing particles with a small diameter to pass through. The bigger particles will remain on the sheath’s upstream surface as some of them block the pores. Eventually, the filtration rate will drop since the medium layer has too many particles preventing the usual and accepted flow of fluid. When filtration results to this point, it needs to be cut off immediately to allow the cleaning of the surface before any further purification. This process is also called surface straining.

Depth Filtration

It forms a path comprising of multiple layers that aid in sieving the larger debris at the top layer while the finer particles pass through it but get caught as they approach, the lower layer with smaller pores. The filtration medium is dense due to the number of layers piled up. It means that particles get held in fibres through the adsorption mechanism to capture the smaller elements on the path that meanders, containing unequal pores on the top surface by the method of diffusion, direct, or the inertial interception technique.

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