Circular gap spray air pulse bag dust collector

The annular gap blowing pulse bag filter is similar to the center pulse blowing bag filter, except that the center blowing Venturi tube of the annular gap blowing pulse bag filter is replaced by an annular gap injector. This annular gap injector is actually a type of annular gap Venturi tube. The top of the annular gap blowing pulse bag filter has an annular channel connected to the blowing tube, and the lower part of the channel has a throat

Product Details

The annular gap blowing pulse bag filter is similar to the central pulse blowing bag filter, except that the center blowing Venturi tube of the annular gap blowing pulse bag filter is replaced by an annular gap injector. This annular gap injector is actually a type of annular gap Venturi tube. The top of the annular gap blowing pulse bag filter has an annular channel connected to the blowing tube, and the lower part of the channel has an annular fine gap that communicates with the throat.

When the annular gap jet pulse bag filter is used for dust cleaning, compressed air enters the annular channel through the jet pipe and is sprayed into the throat through the annular gap, while inducing the surrounding air to enter the filter bag together. As the compressed air entering the annular channel of the annular gap jet pulse bag filter is a pulse high-pressure airflow, the compressed air sprayed from the narrow gap and the induced secondary airflow are also a pulse airflow. This high-speed and high-pressure pulse airflow acts on the filter bag of the annular gap jet pulse bag filter, producing instantaneous reverse flow and impacting the filter bag, causing it to rapidly expand. When the pulse action is completed, the filter bag returns to normal filtration, and the annular gap jet pulse bag filter bag is in a suction state. In this way, the filter bag undergoes several pulse actions, causing the filter bag to collapse. Action, The annular gap jet pulse bag filter produces several expansion and collapse processes, which shake off the dust deposited on the surface of the filter bag and drop it into the ash hopper to achieve the purpose of cleaning.

Due to the larger cross-sectional area of the throat of the annular gap blowing pulse bag dust collector's annular gap Venturi tube compared to the central blowing Venturi tube, under the same blowing pressure or air flow rate, the former induces 3-4 times more air volume than the latter, and its resistance is only 1/4-1/5 of the latter. The filtering wind speed of the filter bag of the annular gap blowing pulse bag dust collector can be increased by 50% -60% compared to the central blowing dust collector, and the compressed air volume only increases by 1/4

Although the annular gap jet pulse bag dust collector can achieve good dust cleaning effect, due to the short service life of the pulse valve, which is generally used for 2-3 months (about 150000 pulse actions), the diaphragm is damaged and the maintenance workload is large. Some annular gap jet pulse bag dust collectors have poor instrument quality, high compressed air consumption, water carrying, etc., which bring certain difficulties to the pulse dust cleaning method.

The annular gap jet pulse bag filter adopts the principle of annular gap jet, with a large air flow injection volume and good dust cleaning effect. A single unit can be combined with a range of 2-12 units. Suitable for metallurgical, steel, chemical, grain, building materials, mining, military and other units.