The CNMC counter current pulse back blowing bag filter uses pulse counter current back blowing for dust cleaning, and its electrical control adopts a sequential controller. It has the advantages of large air volume processing, purification, small footprint, low filter bag wear, long service life, simple filter bag replacement, and easy maintenance.

The CNMC counter current pulse back blowing bag filter can be widely used as a new equipment for purifying and recycling dust containing gases at room temperature and high temperature in industrial and mining enterprises such as metallurgy, chemical industry, machinery, non-ferrous casting, mining, asphalt concrete industry, cement, electricity, carbon black, grain processing, etc.

The filter bag of the CNMC counter current pulse back blowing bag filter has a low filtering wind speed, which improves the dust removal efficiency and reduces the unit area load of the filter bag. According to different dust properties, concentrations, emission requirements, and different usage scenarios, the filter characteristics of the product filter material, blowing vibration mechanism, dust cleaning mechanism, transmission component materials, and other main aspects have been redesigned. The dusty air flows in the space between the filter bags, and the dust is trapped on the outer surface of the filter bags, thus achieving low-pressure blowing vibration dust cleaning, saving electricity and avoiding the impact of oil and water carried into the filter bags by using compressed air blowing dust cleaning.

As the working time increases, the thickness of the dust layer on the inner wall of the filter bag gradually increases, and the resistance also gradually increases. When the resistance increases to 80-120 millimeters of water column (as can be seen by the U-shaped pressure gauge), the electric cylinder starts and the main valve plate of the electric three-way valve is closed, and the auxiliary valve plate is opened for reverse blowing and dust cleaning.

After the blowback air enters the box through the electric three-way valve, it passes through the filter bag in the opposite direction compared to the filtered state. At the same time, the high-frequency electric vibrator starts to operate, causing the filter bag to vibrate at high frequencies. Under the simultaneous action of blowback and high-frequency vibration, it has the effect of cleaning dust (the cleaning time is adjustable).

The working principle of CNMC counter current pulse back blowing bag filter:

1. This device adopts the pulse back blowing dust cleaning method, which is currently one of the best dust cleaning methods in China. The upper box of the device is divided into eighteen small chambers that are not connected to each other and are connected to a long Venturi tube. The dust cleaning purpose is achieved by using programmable pulses. The structure eliminates the small Venturi tube at the top of the spray tube and filter bag, making it simple, easy to operate and maintain.

2. Compared with other dust collectors in China, this equipment has the characteristics of large processing air volume and low system resistance, and has a wide range of applications. (Purification and recovery treatment of mixed gases with dust concentration<60g/m3 at room temperature and high temperature)

3. The flower board edge separating the upper middle box is pressed into a conical hole to form a smooth contact with the filter bag, with good sealing and reducing wear between the hole edge and the filter bag.

4. The structure is simple and reasonable, with a small footprint, and can be installed indoors or outdoors. Users can choose their own model or parallel combination according to their production process and processing air volume, and can provide carbon steel or stainless steel dust collectors as needed.