There are three parts: suction chamber, impeller, and press-out chamber. The impeller chamber is the core of the pump and the core of the flow-through components. The centrifugal pump increases its energy through the work of the impeller on the liquid.
The impeller is divided into three categories according to the direction of liquid flow:
(1) Radial flow impeller (centrifugal impeller) liquid flows out of the impeller in a direction perpendicular to the axis;
(2) Diagonal flow impeller (mixed flow impeller) liquid flows out of the impeller along the inclined direction of the axis;
(3) The direction of liquid flow in the axial flow impeller is parallel to the axis;
The impeller is divided into two categories according to the way of inhalation:
(1) Single suction impeller (that is, the impeller sucks liquid from one side);
(2) Double suction impeller (that is, the impeller sucks liquid from both sides);
The impeller is divided into three categories according to the cover plate:
(1) Enclosed impeller;
(2) Open impeller;
(3) Semi-open impeller;
The enclosed impeller is widely used. The aforementioned single-suction impeller and double-suction impeller all belong to this form.
For centrifugal pumps in this industry, when marking the pump material, it is usually the material of the pump's flow-through parts, and the outer motor part is mostly made of iron. From the actual use effect and cost point of view, this can effectively control the cost, but for submersible pumps, the casing and pump cavity must be submerged in the water, and the internal and external materials need to be the same. Therefore, stainless steel submersible pumps tend to be better than other centrifugal pumps with the same performance. More expensive.
