The structural types of dust collector bags include: 1. Divided by the shape of the filter bag: flat bags (trapezoidal and flat plate type) and round bags (cylindrical type). 2. Divided by the air inlet and outlet methods: lower inlet upper outlet, upper inlet lower outlet, and direct current type (limited to plate-shaped flat bags only). 3. Divided by the filtering method of the bag: external filtration and internal filtration. Filter materials use fibers such as cotton fiber, wool fiber, synthetic fiber, and glass fiber. Filter materials made from different fibers have different properties. Commonly used filter materials are 208 or 901 polyester velvet cloth, with a general operating temperature not exceeding 120°C. Silicon resin-treated glass fiber filter bags generally operate at temperatures not exceeding 250°C. Cotton and wool fabrics are generally suitable for non-corrosive environments, with gas temperatures below 80-90°C containing dust.
Advantages of dust collector bags:
1. High dust removal efficiency, capable of capturing fine dust particles larger than 0.3 microns, with a dust removal efficiency reaching over 99%.
2. Flexible usage, handling air volumes ranging from hundreds of cubic meters per hour to hundreds of thousands of cubic meters per hour. They can be installed directly indoors near machine tools as small units or made into large dust collectors, also known as "bag houses."
3. Relatively simple structure, stable operation, lower initial investment, and convenient maintenance.
Currently, commonly used cleaning methods include:
1. Gas cleaning: Gas cleaning uses high-pressure gas or external atmospheric counter-blowing on the filter bag to remove accumulated dust. Gas cleaning includes pulse jet cleaning, reverse blowing cleaning, and reverse suction cleaning.
2. Mechanical shaking cleaning: Divided into top shaking cleaning and middle shaking cleaning (both in reference to the filter bag), which involves using a mechanical shaking device to periodically shake each row of filter bags to remove accumulated dust.
3. Manual knocking: Involves manually tapping each filter bag to remove accumulated dust.
Source: Xinyang Dust Collector Bag [http://www.btjinyang.com/peijian/product2.html](http://www.btjinyang.com/peijian/product2.html)