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Factors to consider when designing filter bags

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Factors to consider when designing filter bags

Bag filter is a kind of dry filter devicer, which is suitable for capturing fine, dry, non-fibrous dust. The filter bag is a key part of the operation of the bag filter. The filter bag is made of a textile filter cloth or a non-woven felt, and the dust-containing gas is filtered using the filtering action of the fiber fabric.


In general, the fabric and design of our filter bags should strive for efficient filtration, easy removal of dust, and durability. What kinds of filter bags can be classified? Let’s learn about it together:

1, According to the shape of the cross section of the filter bag, it can be divided into: flat bag (trapezoid and flat) and round bag (cylindrical).

2, According to the filtering method of filter bag is divided into: outer filter type and inner filter type.

3, According to the way of entering and exiting the wind, it is divided into: downward air inlet and outlet air outlet and upper inlet air outlet and outlet air outlet (only flat flat bag).

4, According to filter bag use environment and temperature program is divided into: room temperature, medium temperature and high temperature.


Fibers for filter media include cotton fibers, wool fibers, synthetic fibers, and glass fibers. Filter media made of different fibers have different properties. Commonly used filter material is 208 or 901 polyester wheel fabric, the use temperature is generally not more than 120 °C, after silica gel resin treated glass fiber filter bag, the use temperature is generally not more than 250 °C, cotton wool fabric is generally suitable for non-corrosive; temperature Dust-laden gas below 80-90°C.


In addition, the dust removal system plays a decisive role in the bag filter, in addition to the correct choice of filter bag material. The dust-removing efficiency of the bag filter is related to the nature of the filter bag, the filtration speed, the dust concentration of the gas, and the continuous operation time. These factors are interrelated and interact with each other. Therefore, the design of the bag filter is selected. Parameters should be comprehensively analyzed and comprehensively considered.

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Airslide Fabric

Air slide fabrics are used for the pneumatic conveying of fine dry powdery products such as cement. The air slide cloth divides the air slide into upper and lower chambers. The chamber is inclined at as low as 1.5°.Compressed air is injected into the lower chamber which then goes through the media and “fluidises” the cement powder. The cement then behaves like a fluid and “flows” down the length of the chamber.

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Airslide is a semi-permeable textile cloth which allows air to pass through but not the products.

Airslide Fabrics other names are: airslide fabric,air slide fabric,air permeable fabric,fluidising fabric,fluidizing fabric,air slide belt,air slide canvas,aeroslide,airslide membrane,aeration pad, aeration fabric.air slide fabric in shipping,air slide fabric for silos,chute bottoms.


 

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