[Help] What is the model or type of pump this is?

NIKUNI 25STWS Nikoni cast-iron high-pressure eddy current pump

This post was last edited by tie008 on 2020-5-29 at 19:33. The vortex pump is a type of energy-transmitting pump with the highest head and the lowest flow rate; it is also known as a regenerative pump. If axial flow pumps with low head and high flow rate represent one extreme of centrifugal pumps, then vortex pumps with high head and low flow rate represent the other extreme. Vortex pumps are used to draw liquids that do not contain abrasive impurities. https://imgsa.baidu.com/forum/w%3D580/sign=45a90e1d8bb1cb133e693c1bed5556da/0b9d9c5594eef01f4b287d37e6fe9925bc317d13.jpg The vortex pump contains an impeller inside it; the impeller is a disk with grooves cut along its perimeter to form blades. On both sides of the blade, liners that form the working channel are present; at the joints of the suction pipe and the pressure pipe, rings are installed with a width not less than that of the blade’s partition. This partition is positioned close to the impeller, leaving only a very small gap in order to separate the suction chamber from the pressure chamber. In an eddy current pump, both the suction pipe and the discharge pipe are located at the upper part of the pump body; therefore, water only needs to be filled in once when starting the pump. 　　The operation of an eddy current pump is similar to that of a multi-pole centrifugal pump, meaning its function is based on the action of centrifugal force. As the blade rotates, under the effect of centrifugal force, liquid particles move from the right to the left; as they move along the blade, they gain kinetic energy, which enables them to be thrown toward the water intake channel. 　　In the water conduit, the kinetic energy of the liquid particles is converted into pressure energy, and the particles are once again captured by the blades. As the particle moves away from the suction pipe joint, such a cycle repeats many times, with an increase in energy occurring each time. Therefore, a mechanism similar to that of a multi-pole centrifugal pump occurs in a single vane of the swirl pump. Vortex pumps are limited in their application due to their low flow rate and efficiency. Moreover, since the impeller and the liner are quite close to each other and can move relative to one another, high precision in manufacturing is required; the clearance between them is generally between 0.15 and 0.2 millimeters. 　　The head and power curves of vortex pumps differ from those of centrifugal pumps: as the flow rate increases, so do the head and power. Therefore, it is not suitable to use control valves to regulate the flow rate, as closing the valve too tightly not only reduces efficiency significantly but also results in excessively high pressure, which is harmful to the pump’s structure as high pressures can damage it.

Hello, is it a vortex pump? If not, what’s the difference between it and a vortex pump? Thank you!

Hello, is it a vortex pump? If not, what’s the difference between it and a vortex pump? Thank you!

Hello, is it a vortex pump? If not, what’s the difference between it and a vortex pump? Thank you!