The dust concentration of the gas handled by the dust bag during use will directly affect the resistance and service life of the filter bag to a certain extent. The dust layer on the surface of the dust bag is thicker, and the resistance when used is in use. The larger it will be, the greater the effect on the life of the filter bag will be.
Dust bag is mainly used in the process of production is to use the flat round filter bag is mainly for the sake of cleaning ash, in use and make the blow mouth can have a greater chance of aligning the top of the bag mouth, select the low pressure in use Pulse cleaning. In the use of glass fiber membrane filter bag, low-pressure pulse cleaning came into being.
In the design process of the dust bag, each device can be directly designed as a single room, a double room, and multiple rooms. Each room can have one or a plurality of filter bag bundles, which is a typical modular design. First, the average between room and room, followed by the average of the entire room after entering the hopper.
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When the dust bag is purging the filter bag with a pulsed air stream, the bag will have a relatively high pressure air flow and cause the filter bag in the retracted state to expand rapidly. The filter bag will cause fiber-to-fiber misalignment under high pressure and the pressure will increase. The greater the frictional force at the dynamic contact surface, the shorter the life of the filter bag. The filter bag resistance and the filter wind speed are in square relationship. If the wind speed is too large, the initial resistance will be too large, which will cause local “perforation” on the film.
The dust filter bag is usually a deep filter for industrial filter media. Dust bag is dependent on the first set up of a dust layer on the surface of the filter to achieve effective filtration. The establishment of effective filtration for a long time, large resistance, low efficiency, incomplete interception, high filtration and back pressure, frequent cleaning, high energy consumption, long service life, and large equipment footprint.