Dust filter bags are environmental protection equipment widely used in industrial production. They are mainly used to capture and filter dust-containing gases to protect the environment and human health. The production and testing standards of dust filter bags are important for quality.
The following are the production and testing standards for dust filter bags:
1. The production process standards are as follows
High-quality fiber materials, such as PPS, PTFE, NMO, etc., should be selected, which are resistant to high temperature, corrosion, and antistatic.
The weaving process used, such as surface calendering and calendering, makes the dust filter bag have excellent air permeability and dust cleaning effects.
Reasonable processing technology, such as cutting, stitching, hot melting, etc., ensures that the structure of the dust filter bag is stable and not easy to break.
Strict quality control system, strictly control from raw material procurement, production process, finished product inspection and other links to ensure the quality of dust filter bags.
Good surface treatment, such as singeing, heat setting, PTFE coating, etc., improves the wear resistance and anti-penetration of dust filter bags.
2. Inspection standards
Appearance inspection: Check whether the surface of the dust filter bag has defects such as damage, stains, pinholes, and uniform color.
Physical inspection: such as size, weight, thickness, air permeability and other indicators to ensure that the dust filter bag meets the design requirements.
Mechanical inspection: such as strength, elongation, breaking strength and other indicators to evaluate the service life and tensile strength of the dust filter bag.
Corrosion resistance inspection: Through salt spray test, acid and alkali immersion and other methods, the corrosion resistance of the dust filter bag in different environments is tested.
Filtration efficiency inspection: Through the fixed weight method, timed oscillation method and other methods, the filtration efficiency of the dust filter bag for dust-containing gas is tested.
Clean-up inspection: Through the airflow distribution plate experiment, pressure drop measurement and other methods, the dust filter bag is evaluated for its clean-up effect.
Temperature resistance inspection: Through constant temperature oven, high temperature furnace and other equipment, the dust filter bag is tested for its tolerance at different temperatures.
Safety inspection: Check whether the dust filter bag is firmly sewn to prevent dust leakage and environmental pollution caused by damage.