The working principle and structural characteristics of the equipment:

The DDF large bag back blowing dust collector is divided into positive pressure (also known as pressure in type) and negative pressure (also known as suction type), and this manual introduces the negative pressure type. Under negative pressure, the dusty gas enters the lower ash hopper through the inlet duct. A baffle plate is installed on the front of the inlet, and coarse dust falls into the ash hopper by collision and gravity. Fine particulate dust is filtered by the filter bag and adsorbed on the inner wall of the filter bag. The purified gas passes through the bag filter chamber and is sucked into the fan through the exhaust pipe through the top switching valve of the equipment, and then discharged into the atmosphere through the exhaust pipe. When the dust attached to the filter bag continues to increase and the resistance rises to the specified value, the cleaning process begins. The dust cleaning method of the equipment relies on the single chamber reverse air blowing method. During reverse air blowing, the exhaust pipe is closed and the reverse air blowing pipe is opened through a reversing valve to cut off the exhaust of the single chamber. Because the inlet ducts of each room of the equipment are connected and in a negative pressure state, the negative pressure suction effect of adjacent rooms is utilized. The airflow is sucked into the filter bag chamber through the anti blowing pipe, passes through the filter bag, enters the inner side from the outer side of the filter bag, and is sucked into the adjacent chamber through the ash hopper and the inlet pipe of the chamber for discharge. At this time, the filter bag is sucked in and deflated. The accumulated dust inside the filter bag is then shaken off to the lower dust resistance ash hopper, completing the cleaning of a single chamber. The other chambers are cleaned in the same sequence under the control of the cleaning actuator, and the cleaning stops when a certain value is reached. Refer to the working principle diagram of the dust collector.

DDF large bag back blowing dust collectors are widely used in enterprises such as steel mills, smelters, cement plants, carbon black plants, and power plants for purifying and recovering smoke and dust generated from smelting, crushing, screening, and combustion.

Number of filter bag arrangements:

1000m2 is the number of rows in a 2W2 layout; The rows of 3000-9000m2 are arranged in a 2W4W2 layout.

1800m2 is the number of rows in the 3W3 layout; 10000m2 refers to the number of rows arranged in the surrounding channels.

W represents the maintenance channel.

Inlet temperature: 729 and 734 polyester fabrics have a temperature resistance of less than 150 ℃; Glass fiber cloth treated for three generations has a temperature resistance of less than 300 ℃.