The bag filter is mainly a device that uses the filter bag as the filter medium to realize the solid-liquid separation through the pressure difference. According to different application requirements and working principles, it can be divided into single bag filter, multi-bag filter, top entry filter and side entry filter and other types.
Structural characteristics of the bag filter.
It is usually composed of parts such as filter cartridges, filter bags, support baskets, sealing rings, upper covers, and bases. Among them, the filter cartridge is the main structure that carries the filter bag, which is usually made of stainless steel; The filter bag is the core component of filtration, and filter media with different pore sizes can be selected according to different accuracy requirements; The support basket is used to support the filter bag and prevent it from deforming during the working process; The sealing ring ensures the tightness of the filter during operation; The upper cover and base form the housing of the filter.
During operation, the liquid to be filtered enters the inside of the filter cartridge from the inlet, passes through the filter bag, where solid particles are trapped on the surface of the filter bag, and the clean liquid flows out of the outlet through the filter bag. With the progress of filtration, the dirt on the surface of the filter bag gradually increases, and the filtration resistance increases, so it is necessary to clean or replace the filter bag.
It is suitable for a variety of liquid filtration occasions, such as water treatment, chemical industry, food and beverage, pharmaceutical, metal processing and other fields. It can handle all types of liquids, including corrosive, high-temperature, or viscous fluids, and captures tiny solid particles.
When choosing a bag filter, the following factors need to be considered:
Filtration accuracy: It is necessary to choose the appropriate filtration accuracy according to the size of the particles to be removed.
Capacity: The flow rate of the filter should meet the requirements of the production line.
Chemical compatibility: The filter material needs to be able to withstand the chemical properties of the filter media.
Physical resistance: Consider the influence of physical conditions such as temperature and pressure.
Cleaning and maintenance: Consider how easy it is to clean the filter and how easy it is to maintain the cost of maintenance.