1. Determine the type of ventilation fan based on the different uses of the organic fertilizer production line. For example, when transporting dusty gases, a dust exhaust fan should be selected; When transporting corrosive materials or gases, anti-corrosion ventilation fans should be selected; Explosion proof ventilation fans are required when transporting flammable and explosive materials or gases; When conveying clean air, general ventilation fans can be selected for air exchange.

2. Select the type of ventilation fan based on the required air volume and pressure, and determine the fan number. When determining the fan number, consideration should be given to the possibility of air leakage in the dust removal system and calculation errors in system pressure loss. Typically, an additional safety factor is added to the air volume, which is 1.1 for the general air supply and exhaust system, 1.1-1.15 for the dust removal system, and 1.15 for the pneumatic conveying system; The additional safety factor for wind pressure is generally 1.1-1.15 for air supply and exhaust systems, 1.15-1.2 for dust removal systems, and 1.2 for pneumatic conveying systems.

3. The performance parameters or characteristic curves on the sample of the ventilation fan are obtained by conducting tests on air with a standard atmospheric pressure of 101.325kPa, air temperature of 20 ℃, relative humidity of 50%, and density of 1.2kg/m3. When the conditions change, the performance of the ventilation fan will also change.

4. In order to facilitate the connection and installation of ventilation fans and system pipelines, appropriate ventilation fan inlet and outlet directions and transmission methods should be selected. Meanwhile, low-noise ventilation fans should be selected.Key points for selecting fans for organic fertilizer production lines

1. Determine the type of ventilation fan based on the different uses of the organic fertilizer production line. For example, when transporting dusty gases, a dust exhaust fan should be selected; When transporting corrosive materials or gases, anti-corrosion ventilation fans should be selected; Explosion proof ventilation fans are required when transporting flammable and explosive materials or gases; When conveying clean air, general ventilation fans can be selected for air exchange.

2. Select the type of ventilation fan based on the required air volume and pressure, and determine the fan number. When determining the fan number, consideration should be given to the possibility of air leakage in the dust removal system and calculation errors in system pressure loss. Typically, an additional safety factor is added to the air volume, which is 1.1 for the general air supply and exhaust system, 1.1-1.15 for the dust removal system, and 1.15 for the pneumatic conveying system; The additional safety factor for wind pressure is generally 1.1-1.15 for air supply and exhaust systems, 1.15-1.2 for dust removal systems, and 1.2 for pneumatic conveying systems.

3. The performance parameters or characteristic curves on the sample of the ventilation fan are obtained by conducting tests on air with a standard atmospheric pressure of 101.325kPa, air temperature of 20 ℃, relative humidity of 50%, and density of 1.2kg/m3. When the conditions change, the performance of the ventilation fan will also change.

4. In order to facilitate the connection and installation of ventilation fans and system pipelines, appropriate ventilation fan inlet and outlet directions and transmission methods should be selected. Meanwhile, low-noise ventilation fans should be selected.