Bag dust collector supporting fan plays a key role in the dust collector equipment, mainly played a role in the collection and filtration of dust and dust, bag dust collector fan selection and dust removal efficiency has a great relationship. If the selection is too small, the smoke and gas will not be collected all together, resulting in dust spillover, and can not reach the satisfactory dust removal consequences. The selection is too large, the filter wind speed of the bag will increase, and the life of the bag will be shortened directly, and the dust removal efficiency will be poor.
If the air volume is too low, the wind speed in the pipeline can not reach the request, the pipeline may cause blockage, so the accurate choice of bag dust collector fan, can effectively ensure the normal stable operation of the dust collector, dust removal efficiency is also guaranteed. The selection design of the fan is calculated according to the air volume, system resistance, regional atmospheric pressure and dust temperature of the dust collector. The selection method of the bag dust collector fan is as follows:
1. Select a fan based on the fan performance table
This way is the same as the application of the pump performance table to choose the pump, although simple and convenient, but the fault of the way is that the fan device can not be correctly determined. This method is practical for single working condition fan selection, it is difficult to compare and analyze the selection, and the problem of working condition regulation can not be solved well.
2. Select the fan based on the fan performance curve
This method is the same as the application of the pump performance curve to choose the pump, which is simple and convenient. This method is convenient for the analysis of the condition regulation and the determination of the adjustment parameters, but the comparison of the application performance curve is poor.
3. Apply the dimensionless performance curve of the fan to select the fan
The dimensionless performance curve of the fan is the dimensionless performance parameter of the series of fans with various types and different machine sizes. In order to narrow the scope of selection, first select the fan speed (try to choose a higher speed under possible conditions, but the boiler induced draft fan, dust exhaust fan should consider the wear problem of high speed)
Bag dust collector fan installation method:
1. Fan inlet pipe, exhaust pipe, valve regulating device, body heating into cooling device, oil pipeline system pipe, etc. should have single support and firmly connect with basic or other buildings.
2. When connecting each pipe with the fan, the flange surface should be flat in the middle, and should not be hard pulled or stiffened. The fan shell should not suffer the weight of other parts to prevent the deformation of the shell; After the installation of the pipeline, the different coaxiality of the unit should be tested again to see if it meets the requirements.
3. Installation of observation instruments and instruments of automatic control equipment affiliated to the fan shall be performed according to the provisions of equipment skills documents; When the pipe connecting the fan needs to be cut or welded, the casing should not be deformed. It is generally recommended to run after the pipe is separated from the casing.
4. The exposed part of the fan transmission device has a protective cover. When the air inlet or intake pipe of the fan is directly connected to the atmosphere, maintenance network or other facilities should be installed.