1. Ventilation method:
The positive pressure type dust removal equipment is located in the positive pressure section of the fan. The dust-containing gas is understood and flows through the fan to be pressed into the dust removal equipment, so that the dust removal equipment works under positive pressure and has a simple structure and saves pipeline. However, due to the passage of gas through the fan, the fan blades wear more. The negative pressure type dust collector is arranged in the negative pressure section of the wind pressure. The air in the dust collector is sucked out by the fan to form a negative pressure, and the fan sucks in the purified gas, which has less wear on the fan impeller and is less prone to the occurrence of dust due to adhesion of dust. Vibration and other accidents.
2, cleaning method:
Common methods of cleaning are mainly mechanical vibration cleaning, reverse airflow backflushing, gas ring backflushing and pulse blowing cleaning.
3. Structure form:
The inlet of the bag filter is arranged with two modes: upper intake and lower intake. The upper intake airflow is consistent with the direction of dust deposition, which is conducive to the sedimentation of dust. Shuncheng environmental protection forms a uniform dust layer on the filter bag, and the filtration performance is good. However, the structure is more complicated and the flower board is easy to accumulate. The ash bucket tends to retain air and increase the possibility of condensation. The lower intake structure is simpler. It can avoid the shortcomings of the upper air intake, and it is also the air intake method that is used nowadays, which has the advantages of stable airflow and easy adjustment of the filter bag installation.
4, the material of the cloth bag:
The bag is the core part of the bag filter, and its performance has a great influence on the operation of the bag filter. The characteristics of the dust-containing gas, such as particle and gas properties (temperature, humidity, particle size, and dust concentration, etc.) must be considered when selecting the filter media. The filter material with good performance should have large dust holding capacity, low moisture absorption, high efficiency, low resistance and long service life. At the same time, it has the advantages of temperature resistance, wear resistance, corrosion resistance and high mechanical strength.
Nitriding Single Screw and Barrel
1. When using new plastic, the remaining material of the screw should be cleaned. 2. When the temperature of the molten plastic is normal but black spots or discoloration of the molten plastic are constantly found, the rubber screw should be checked. 3. During processing, try to make the material plasticize evenly, and do not allow metal foreign matter to be mixed into the material to reduce the torque of the screw. force.
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