The impeller of slurry pump can be divided into closed impeller, semi-open impeller and open impeller.
1. Closed impeller: consists of blades, front and rear cover plates. The closed impeller is more efficient and difficult to manufacture. It is most used in centrifugal pumps. It is suitable for conveying clean water, solutions and other clean liquids with low viscosity without particles.
2. Semi-open impeller: Generally, there are two structures. One is the front semi-open type, which is composed of the rear cover and the blades. The impeller efficiency of this structure is low. In order to improve the efficiency, it needs to be equipped with an adjustable gap seal ring; the other is The rear half-open type is composed of a front cover and blades. Since the same sealing ring as the closed pump impeller can be applied, the efficiency is basically the same as that of the closed impeller. The semi-open impeller is suitable for conveying liquids containing suspended solids such as solid particles and fibers. The semi-open impeller is less difficult to manufacture, lower in cost, and highly adaptable. In recent years, it has been increasingly used in centrifugal pumps for refining and chemical industries, and is used to transport clear water and liquids similar to clear water.
3. Open impeller: an impeller with only blades and blade stiffeners, without front and rear cover plates. The number of open impeller blades is small. The pump impeller is low in efficiency and has fewer applications. It is mainly used to transport high-viscosity liquids and slurry liquids.

Impeller Materials

The number of blades of slurry pump impeller is generally 5, some could be 4, 3 and so on. The impeller of the slurry pump directly acts on the slurry, so the wear is quite serious. It must be made of high wear-resistant and corrosion-resistant materials. Generally, the A05 material is used as the main material which also called Cr27 alloy, and there are rubber impellers according to different media. The alloy impeller has stronger adaptability. The alloy impeller must be used when the medium contains sharp-angled particles. Anyway he rubber impeller also has its own advantages. The medium does not contain sharp-angled grains, and the rubber impeller has better resistance to punching.

Precautions For The Use Of Impeller

1. Since the impeller is the most easily worn-out slurry pump parts, pay attention to timely replacement, otherwise, a broken impeller will seriously affect the operation efficiency of the slurry pump
2. Prevent blockage of the impeller flow path during operation. Prevent long fibers from entangled with the impeller, Prevent the slurry solidify and block the impeller after no run for a long time, and check the condition of the impeller before running the pump.

Cooperation With Kingda

Kingda Group has invested huge sums of money to establish a complete system of slurry pump production including casting workshop and mechanical workshop, and has a number of national patents, the pumps technology is in a leading position in the world, the pump parts produced by us are reliable, wear-resistant, corrosion-resistant, and have a long service life. At the same time, Kingda has the only impurity pump research institute in China. The impurity pump research institute specializes in the research work of performance, wear mechanism for slurry pump, sewage pump and submersible pump ,wear-resistant materials and new product development. Welcome domestic and foreign customers to consult and leave messages here. We will provide you best products with professional and meticulous services.