Fine polishing of dust removal fan structure and form

Fine polishing of dust collector fan structure and form grinding polishing dust sets of centrifugal fan by current collector commonly, impeller, casing, gear and motor current collector is the fan air inlet, it is used in the case of small flow loss, to import the impeller gas equably. Circular cylinder current collector itself fluid resistance is bigger, and guide the air flow in the impeller flow condition is not good. Its advantage is easy processing. Conical flow situation of current collector is slightly better than cylindrical, but still poor. Circular flow situation of current collector from the previous two forms, practical also more widely used. Small nozzle shape current collector flow loss, lead the airflow into the impeller flow condition is better also, widely used in high efficiency fan. But the processing is more complex, high manufacturing requirements. Fine polishing the dust collector is a major part of the fan impeller, the fan impeller is composed of front coil, after the plate, blades and hub, general welding and riveting process. Its size and geometry shape has a significant influence on the performance of the ventilator. Is the most important part of the impeller blade, its outlet Angle, blade shape and number of work has a great influence on the ventilator. Fine polishing the dust removal centrifugal fan impeller, depending on the blade outlet Angle, can be divided into forward, radial and back to the three. Under the same impeller rotational speed, the greater the blade outlet Angle B, the lower the pressure. After the general to the flow of the impeller efficiency is higher than the forward impeller, small flow loss, low running noise also. Therefore, prior to the impeller used in the fan of air volume and wind down, after the impeller is applicable to medium and high pressure fan. When flow after more than a certain value, the fan impeller shaft power has a downward trend with the increase of traffic, shows that it has characteristic of but load; And the radial and the former to the impeller fan shaft power increases with the increase of traffic and, shows that prone to overload. If you don't normal work in dust collector system, radial impeller and the former to the impeller fan prone to overload, so that burn out motor accident.

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