Pulse dust collector is a new type of pulse dust collector that is improved on the basis of bag dust collector. It combines the advantages of various pulse jet dust collectors with chamber back blowing, overcomes the shortcomings of insufficient chamber cleaning intensity and uneven distribution of inlet and outlet air, and expands the application range.

Pulse dust collector is a type of dust containing gas that enters the dust collector from the air inlet. When it first touches the inclined plate and baffle in the middle of the air inlet and outlet, the airflow turns to flow into the ash hopper. At the same time, the airflow speed slows down, and due to inertia, coarse particles of dust in the gas directly flow into the ash hopper. As a pre dust collector, the airflow entering the ash hopper then bends upwards and is captured on the outer surface of the filter bag through the filter bag with a metal skeleton inside. The purified gas enters the upper cleaning room of the filter bag room and gathers at the air outlet for discharge. During the purification process of the dust containing gas through the filter bag, as time goes on, more and more dust accumulates on the filter bag, increasing the resistance of the filter bag, resulting in a gradual decrease in the processing air volume and normal operation, To control the resistance within a certain range (140-170mm water column), once the range is exceeded, the filter bag is cleaned. During cleaning, the pulse control instrument sequentially triggers each control valve to open the pulse valve. The compressed air in the air bag is sprayed into each corresponding filter bag through the Venturi tube through each hole of the blowing pipe. The filter bag instantly expands rapidly, causing the dust accumulated on the surface of the filter bag to fall off, and the filter bag returns to its initial state. The dust falls into the ash hopper and is discharged from the body through the ash discharge system. As a result, the dust accumulated on the filter bag is periodically pulsed to clean the dust, allowing the purified gas to pass through normally and ensuring the operation of the dust removal system. [1] [2] [3]

operational principle

Pulse dust collector refers to the method of removing dust attached to the filter medium (cloth bag or filter cartridge) by spraying compressed air; According to the size of the dust collector, there may be several sets of pulse valves controlled by a pulse controller or PLC. Each time, one set of pulse valves is opened to remove the dust from the part of the cloth bag or filter cylinder it controls, while the other cloth bags or filter cylinders work normally. After a period of time, the next set of pulse valves opens to clean the next part of the dust collector, which is composed of ash hopper, upper box, middle box, lower box, and other parts. The upper, middle, and lower boxes are divided into compartments. During work, dusty gas enters the ash hopper through the inlet duct, with coarse dust particles directly falling into the bottom of the ash hopper. Fine dust particles enter the middle and lower boxes with the airflow turning upwards. Dust accumulates on the outer surface of the filter bag, and the filtered gas enters the upper box to the net gas collection pipe - exhaust duct, and is discharged into the atmosphere through an exhaust fan. The ash cleaning process involves first cutting off the clean air outlet air duct of the room, so that the cloth bags in the room are in a state where there is no airflow passing through (the air is cut off for ash cleaning in different rooms). Then open the pulse valve and use compressed air for pulse blowing to clean the dust. The closing time of the shut-off valve is sufficient to ensure that the dust peeled off from the filter bag settles into the ash hopper after spraying, avoiding the phenomenon of dust adhering to the adjacent filter bag surface with the airflow after separating from the filter bag surface. This makes the filter bag clean thoroughly, and the exhaust valve, pulse valve, and ash discharge valve are fully automatically controlled by a programmable controller. Dust containing gas enters through the air inlet and, when passing through the ash hopper, some large particles of dust in the gas are separated by inertial force and gravity, and directly fall into the bottom of the ash hopper. Dust containing gas enters the filter bag filtration area of the middle box after passing through the ash hopper. The gas passes through the filter bag and the dust is trapped in the filter bag