Can a submersible pump be replaced with a vortex pump or a centrifugal pump?

A submersible pump is installed vertically, that is: the motor and the pump body are perpendicular to each other. In a centrifugal pump, the motor and the pump body are arranged horizontally. It is impossible to meet under the current conditions. If the process flow is modified, it should be possible to do this by running a pipeline from the bottom of the container holding the solution, or from a point near the bottom, to the inlet of the centrifugal pump. Note that the centrifugal pump can only be installed horizontally, and it needs to be filled with liquid before it is started; therefore, the outlet of the pipeline must be above the pump’s inlet, so that the liquid at the pump inlet can flow into the pump body freely due to gravity. Don’t all submersible pumps have a level interlock to stop the pump? Consequently, the container must be equipped with a level gauge, to prevent the container from being emptied due to operational errors and air from entering the pump. Attached are the working principles of vortex pumps and centrifugal pumps. Working principle of vortex pump: A vortex pump (also known as an eddy current pump) is a type of vane pump. It is mainly composed of an impeller, a pump body, and a pump cover. The impeller is a disk with blades evenly arranged radially around its circumference. An annular flow channel is formed between the pump body and the impeller, with both the inlet and outlet located on the outer circumference of the impeller. There is a partition between the inlet and the outlet, which separates them from each other. We divide the liquid inside the pump into two parts: the liquid between the blades and the liquid in the flow channels. As the impeller rotates, under the effect of centrifugal force, the circumferential velocity of the liquid inside the impeller is greater than that of the liquid in the flow channel, resulting in an \"annular flow\". Furthermore, as the liquid moves forward along with the impeller from the suction inlet to the discharge outlet, the combination of these two movements results in the formation of a \"longitudinal vortex\" in the liquid that moves in the same direction as the impeller. Thus, it earned the name vortex pump. It should be specifically noted that the circumferential velocity of the liquid particles in the pump’s flow channel is less than that of the impeller. During the vertical vortex process, liquid particles enter between the impeller blades multiple times, transferring energy to the liquid particles in the flow channel through those blades. Each time a liquid particle passes through a blade, it gains energy. This is also why, at the same outer diameter of the impeller, vortex pumps achieve a higher head than other vane pumps. Not all liquid particles pass through the impeller; as the flow rate increases, the \"annular flow\" decreases. When the flow rate is zero, the \"ring flow\" is strongest and the head is highest. Since the energy in the flow channel is transferred through liquid impact. It also results in significant impact losses, which is why the efficiency of vortex pumps is relatively low. Working principle of centrifugal pumps: There are many types of centrifugal pumps, but their working principle is the same, and their structure is largely similar. The main components are the rotating impeller and the fixed pump casing. The impeller is the component that directly does work on the liquid; it has 4–8 backward-curving blades, while the pump casing serves as a spiral-shaped energy conversion device. Before starting a centrifugal pump, the chamber inside it must first be filled with the liquid to be transported. Once started, the pump shaft drives the impeller to rotate, forcing the liquid between the blades to spin as well. Under the action of inertial centrifugal force, the liquid is flung from the center of the impeller toward the periphery, gaining energy in the process. This increases the static pressure of the liquid flowing toward the periphery of the impeller as well as its flow velocity, which can reach 15–20 m/s. After the liquid leaves the impeller and enters the pump casing, its velocity decreases due to the gradual expansion of the flow channels within the casing, with some of its kinetic energy being converted into static pressure energy. As long as the impeller keeps rotating, the liquid is continuously drawn in and discharged. Centrifugal pumps are able to transport liquids primarily due to the high-speed rotating impeller, which imparts energy on the liquid through inertial centrifugal force, thereby increasing its pressure. This post was last edited by Nine Heavens is me on 2009-2-25 03:42.]

As long as the suction lift, head, and corrosion resistance of the centrifugal pump and the vortex pump meet the requirements, they can certainly be replaced.

If the conditions on the 3rd floor are met, it can be exchanged. Before deciding to make a replacement, it is essential to understand the reasons for initially choosing an submersible pump, as well as what negative consequences the replacement may bring. :lol

The choice of submersible pump is primarily driven by the need to ensure zero leakage of the medium! Replacing it is probably not worth the cost!

It’s possible, but it’s worth considering that self-priming corrosion-resistant centrifugal pumps are more convenient to use; there are limits on the self-priming height they can achieve. Their cost is higher compared to submersible pumps, and of course it’s best to have one in use and another as a backup

It depends on the medium; if the latent heat of vaporization of the medium being transported is high, it cannot be replaced.

Thank you all for your advice. I would like to ask the person above: what impact does a high latent heat of vaporization have on centrifugal pumps? High temperature? It can’t be easy to vaporize, otherwise it will cause cavitation, right?