Structural features of Non clog centrifugal pump:
Generally, there are two kinds of structures: firstly, the first half opening is composed of the rear cover plate and the blade. The impeller efficiency of the structure is low, and the sealing ring of adjustable clearance can be used to improve the efficiency. The other is the latter half, which consists of the front cover and the blades, the efficiency is basically the same as the closed impeller, and it has a sealing effect.
Non clog pump is centrifugal impeller without wheel cover. It is made of whole forging, a whole of blades and roulette, and is made into radial straight blades. Its structural strength is high, and the circumference of the impeller can reach 450 ~ 500 m/s, the pressure ratio of single stage is higher, but the flow velocity and Mach number are higher in the impeller, and the leakage loss is larger, which results in the poor stability of the working condition.
Application of semi-open impeller centrifugal pump:
Although the centrifugal pump efficiency of this impeller structure is not high, the impeller can convey some solid particles, fiber, and other media. It can also be widely used in the centrifugal compressor of internal combustion engine turbocharger and small power gas turbine, and the application of stationary centrifugal compressor also increases. Because of the advantages of this impeller structure, it is not difficult to manufacture, it is low cost and it had strong adaptability. In recent years, the application of centrifugal pumps in refining and chemical industry has been gradually increased, and it is also used to transport water and approximate clear water.