Centrifugal pump impeller classification:
The impeller according to its mechanical structure, half closed closed impeller impeller and open impeller.
1：closed impeller blade on both sides with the former, HouGaiBan, closed impeller efficiency is higher, * widely used, it is suitable for conveying clean liquid, general centrifugal pump with the impeller.
2： half closed impeller: no cover on the suction side, and on the other side there is flat, easy casting, it is used for transporting slurry or liquid suspending liquid containing solid particles.
3： open impeller: no cover plate on both sides of blade, consists only of blade and hub of the impeller, easy casting.
4： open and half closed impeller, due to the flow channel is not easy to jam, suitable for conveying liquid suspending liquid containing solid particles, but with no cover plate, liquid between the blade is easy to flow back, so this kind of pump efficiency is low.
5： are key components in a centrifugal pump, the impeller, the impeller's role is to transfer the mechanical energy of the prime mover to liquid, can makes by centrifugal pump fluid static pressure and kinetic energy are improved.
6： generally by the wheel hub, blade and impeller cover plate of three parts.Impeller cover plate has a front cover and HouGaiBan, impeller cover plate called the front cover of the suction side, on the other side of the cover board called HouGaiBan.
7： the impeller speed is high, the delivery pressure is big, the impeller blades and plays a main role, the impeller before assembly through the static balance experiment, impeller for smooth surface, so as to reduce the friction loss of the liquid.
8： impeller material, is mainly based on the transportation of liquid chemical properties, impurities, and under the action of centrifugal force to determine the strength.Clear water centrifugal pump impeller is made of cast iron or cast steel, conveying has strong corrosive liquid, bronze, stainless steel, ceramics, acid ferrosilicon, plastic manufacturing, etc.Manufacturing method of the impeller has a foundry casting, precision casting, welding, mold and so on, its size, shape and manufacturing precision had a great influence on the performance of the pump.