The filter bag is a key part of the operation process of the bag filter. When it is used, the cylindrical filter bag is usually suspended vertically in the dust collector. The fabric and design of the filter bag should be as efficient as possible, and the dust should be easy to use. Peeling and durability.
In pulse and air box type pulse dust collectors, the dust is mainly attached to the surface of the filter bag, so that the dust-containing gas will effectively pass through the dust collector so that the dust will be trapped on the outer surface of the filter bag. Clean gas will enter the filter bag through the filter material.
The cage inside the filter bag is used to support the filter bag to prevent the filter bag from collapsing, and it helps to remove and redistribute the dust cake. The shape of the filter bag cross-section is divided into: flat bag (trapezoid and flat) and round bag (cylindrical), according to the way into and out of the wind is divided into: the lower air into the air and the upper air into the air and the DC type ( Limited to flat flat bag).
The
Filter bag use environment and temperature program is divided into: normal temperature, medium temperature and high temperature, in the process of making the filter material can be used fiber, cotton fiber, wool fiber, synthetic fiber and glass fiber, different fiber woven The filter material will have its different properties, often using 208 or 901 polyester wheels.
When the filter bag is in use, its temperature will not exceed 120 degrees in general. After the glass fiber filter bag treated with silicon germanium resin, the use temperature is generally not more than 250°C. The cotton wool fabric is generally suitable for non-corrosiveness; the temperature is 80- Dust gas below 90°C.
The size of the filter bag is related to the speed of the gas entering the inlet of the filter bag. When the dust-laden gas enters into each filter bag, this will accelerate the secondary flying of the dust and dust, and on the other hand will cause the filter bag due to the friction of the dust. The wear increases dramatically, so V1 cannot be too large.