What are the types of filters for blast showers?

There are mainly the following common types of air shower filters, each type has its characteristics in material, structure, and function to meet different filtration needs:
Primary filter
Material: The general use of chemical fiber, non-woven fabrics, and other materials. These materials have a certain porosity that allows air to pass through while trapping larger dust particles.
Structure: Usually flat or folding structure. Flat type primary effect filter has a simple structure, easy to install and replace; The folding primary effect filter improves the filtration efficiency and dust capacity by increasing the filtration area.
Function: Mainly used to filter the large dust particles, hair, fiber, and other impurities in the air, the air into the air shower room for preliminary filtration, protect the subsequent medium and high-efficiency filters, and extend their service life.
Medium effect filter
Material: glass fiber, synthetic fiber, and so on. These materials have finer fibers and filter better than primary filters.
Structure: Common bag and plate structure. Bag type medium effect filter has a large dust capacity and stable filtering effect; The plate medium effect filter has better rigidity and easy installation.
Function: Based on the initial filter, further filter the dust particles with small particle size in the air, which can effectively remove the impurities such as pollen and smoke in the air, make the air cleaner, and reduce the burden for the high-efficiency filter.
High-efficiency filter
Material: Usually ultrafine glass fiber filter paper or synthetic fiber filter paper, with extremely low aperture and extremely high filtration efficiency.
Structure: Generally folding, by folding filter paper to increase the filtration area, to achieve efficient filtration in a small space. At the same time, the filter is also equipped with a metal or plastic frame to ensure the stability of the structure.
Function: Mainly used to filter extremely small dust particles and bacteria in the air, can filter out more than 99.97% of 0.3-micron particle size particles, is to ensure that the air shower room achieves high cleanliness requirements of the key components, often used in places with high cleanliness requirements.
Activated carbon filter
Material: With activated carbon as the main filter material, activated carbon has a rich microporous structure and huge specific surface area, which can effectively absorb odors and harmful gases in the air.
Structure: Generally composed of activated carbon particles or activated carbon fiber and other supporting materials, can be made into plates, honeycombs, and other structures to increase the contact area with the air and improve the adsorption effect.
Function: It is specially used for absorbing odors and harmful gases in the air, such as formaldehyde, benzene, hydrogen sulfide, etc., which can improve the air quality in the air shower room, provide a more comfortable environment for personnel, and also protect other filters from the erosion of harmful gases.
Electrostatic filter
Material: Usually composed of a metal electrode and an insulating material, the metal electrode is used to generate an electric field, and the insulating material is used to isolate the electrode to ensure safety.
Structure: Generally adopts plate or tube structure, with high voltage electrode and ground electrode inside to form electrostatic field. When the air passes through, pollutants such as dust particles are adsorbed to the electrode by the electrostatic field.
Function: The use of electrostatic adsorption principle, dust, pollen, and other small particles in the air for efficient filtration. Its advantages are high filtration efficiency, low resistance, can achieve a better filtration effect under lower energy consumption, and can be reused by regularly cleaning the electrode.