BQDL series fiberglass bag filter element

The BQDL series fiberglass bag filter element is a high-performance filter product specially designed for medium efficiency air filtration. It is made of ultra-fine glass fibers through precise melt blown technology, with a fiber diameter of only 0.5-5 μ m. The structure is fluffy and has a large dust holding capacity, combining the two core advantages of high filtration efficiency and low operating resistance. The filter element covers multiple efficiency levels from F5 to F9 (corresponding to 40% to 95% filtration efficiency), and can be flexibly selected according to EN 779 and ISO 16890 standards. The temperature resistance range can reach up to 120 ℃, and the flame retardant performance meets the UL-2 international standard. It is suitable for the medium efficiency filtration needs of various ventilation and purification systems and is an ideal choice for front-end pre filtration of high-efficiency filters and industrial clean spaces.

The BQDL series fiberglass bag filter element is supported by a galvanized steel plate or aluminum alloy frame, and the filter bag adopts a trapezoidal or "V" - shaped structure design, effectively increasing the filtration area, optimizing the airflow distribution, and maximizing the utilization rate of the filter material. The bag mouth is sealed by hot melt welding, with excellent airtightness, eliminating the hidden danger of air leakage; A metal support grille is installed inside the bag body to divide the filter bag into uniform horizontal airflow channels, avoiding excessive expansion or mutual shielding of the filter bag under high wind speed, and ensuring stable filtration efficiency output throughout the entire life cycle. The air outlet surface of the filter material is covered with a synthetic fiber protective lining to prevent fiber leakage and mechanical damage. The overall structure is lightweight and sturdy, and can be quickly disassembled and replaced by a single person, with efficient and convenient maintenance.

The BQDL series fiberglass bag filter element is widely used in commercial and industrial ventilation and air conditioning systems for medium efficiency filtration, clean room high-efficiency filter front-end pre filtration, air purification in electronic manufacturing and food processing workshops, dust interception in spray rooms and paint baking rooms, ventilation purification in automotive painting workshops, and mid stage filtration of large air compressor units. It is particularly suitable for industrial environments with high dust loads and continuous operation.

Compared to traditional framed filter bags, the BQDL series fiberglass bag filter element has no additional metal inner frame constraints, a lighter structure, and lower cost; Ultra fine fiberglass melt blown filter material endows it with dust holding capacity and sub micron dust capture capability far exceeding that of products of the same grade; UL-2 level flame retardant and 120 ℃ temperature resistance performance meet the fire safety requirements of harsh working conditions; The trapezoidal bag design significantly increases the effective filtration area, flattens the resistance growth curve, reduces system energy consumption, and highlights the comprehensive cost of use.

① Decreased filtration effect: It is often caused by dust accumulation in the filter bag, which leads to an increase in pressure difference. When the inlet and outlet pressure difference reaches 250-350Pa, it should be replaced in a timely manner to avoid the filter bag from breaking due to overpressure operation.

② Filter bag damage: usually caused by improper installation or operation under excessive pressure difference. When replacing, it is necessary to ensure that the filter bag is tightly attached to the support mesh and the bolts are evenly tightened.

③ Edge leakage: Check for cracks at the hot melt welding point. If damaged, replace the entire bag and do not repair it.

④ Blockage too quickly: It is recommended to install a Y-shaped or basket style pre filter at the front end to intercept large particle impurities, and choose the efficiency level reasonably according to the working conditions to avoid overloading caused by a small aperture.