The role of the centrifugal pump and parts structure is introduced

In production, life and chemical manufacturer for liquid transportation, the use of centrifugal it is very common, using centrifugal pump speed is gradually reduced in the liquid in the channel, can make part of kinetic energy into static pressure, can not only improve the liquid pressure, and reduce the caused by excessive channel energy loss inside the pump body. So the water pump body is as a pump shell liquid, it itself is an energy conversion device. Centrifugal pump is generally composed of pump body, impeller, shaft seal, mechanical seal, support, motor and other parts. 1. body is the center of the pump structure, also called spiral or pump shell, the forms are: horizontal split, vertical split, split, simplified type. Can be divided into the form of the pump shell bearing standard bearing type, center bearing type, cantilever, pipeline, hanging. 2. Impeller: divided into closed impeller, half open impeller and open impeller; 一个。 Before and after the closed impeller: there is called a closed impeller cover plate of the impeller. This form completely closed impeller flow channel, the impeller head is high, the hydraulic efficiency is high, widely used in chemical industry device on the impurities in the fluid medium. b。 Half open impeller: only HouGaiBan called half open impeller impeller. Its efficiency between the closed and open impeller impeller, can be used in the high-speed pump, the impeller can be equipped with before induction wheel. Can be used to lift the lower axial flow water pump, can also be used in slurry pump. c。 Open impeller: there is no front cover, HouGaiBan size is small, completely exposed called open impeller impeller blade, open impeller are used for transporting slurry, and viscous liquid or solid particles suspended matter, not easy jam, but the liquid between blade prone to flow back, head and efficiency is high, some in front of the impeller and idler used in high speed centrifugal pump. 3, shaft seal: both fixed and rotating the pump shaft seal between the water pump shell is called the shaft seal, is to prevent the high pressure liquid along the axis from the pump leakage, or infiltration of outside air along the shaft, shaft seal for centrifugal pump, it belongs to the dynamic seal. 4, mechanical seal: also called end face seal, it is a kind of rotating machinery shaft sealing device, to point to by at least a pair of end face perpendicular to the rotation axis in the liquid pressure and compensation institution stretch ( Or magnetic force) Role, and with the cooperation of the auxiliary seal up keep post merger relative sliding and prevent fluid leakage of equipment, main effect is to easy leakage of axial sealing leakage change is more difficult to end face seal. Including mechanical seal ring, the static sealing ring, spring load device load the static sealing element, etc. 5. Stents and motor: is a balance of pump body and motor in the same position, motor rotation by coupling drives the impeller to complete delivery.
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