Vortex pump (vortex pump): a pump that uses the force of a rotating impeller on a liquid to transfer kinetic energy in the direction of liquid movement by giving it impulse;
The quota includes: single-stage vortex pump, centrifugal vortex pump, stainless steel vortex pump, and other vortex pumps.
Firstly, analyze the difference between purchasing centrifugal pumps and vortex pumps from a theoretical perspective.
From the perspective of working principle, a centrifugal pump will first fill the pump with liquid before starting. The blades of the impeller drive the liquid to rotate, so the liquid flows towards the outer edge of the impeller by inertia during rotation. At the same time, the impeller sucks in liquid from the suction chamber. Usually, during this process, the liquid in the impeller flows around the blades, and the liquid exerts a lift force on the blades during the flow movement.
The working principle of a vortex pump is that when the impeller rotates, under the action of centrifugal force, the circumferential velocity of the liquid in the impeller is greater than that in the flow channel, thus forming a "circular flow". Furthermore, due to the liquid following the impeller from the suction port to the discharge port, the combined result of these two movements causes the liquid to generate a "longitudinal vortex" that rotates in the same direction as the impeller. Therefore, it was named the vortex pump.
Secondly, analyze the difference between purchasing centrifugal pumps and vortex pumps from a structural perspective.
The structure of a centrifugal pump mainly consists of flow components such as a suction chamber, impeller, and pressure chamber. The suction chamber is located in front of the inlet of the impeller and plays a role in directing the liquid towards the impeller; There are three main forms of pressurized water chambers: spiral pressurized water chambers (snail shell type), guide vanes, and space guide vanes; The impeller is the most important working component of a pump, consisting of a cover plate and a middle blade.
Some vortex pumps are also called vortex pumps, regeneration pumps, etc. Due to the vortex motion generated by the rotation of the impeller, it absorbs and discharges liquid, hence it is called a vortex pump. Some vortex pumps are also called vortex pumps, regeneration pumps, etc. Due to its ability to draw in and expel liquid through the vortex motion generated by the rotation of the impeller, it is called a vortex pump. At present, the flow rate of a typical vortex pump is 0.2-27m ³/h. The working principle of a general vortex pump is that when the prime mover drives the impeller inside the pump to rotate through the shaft, the liquid is sucked into the flow channel by the suction person, and is subjected to the centrifugal force of the rotating impeller, and is thrown into the surrounding annular flow channel, causing the liquid to rotate in the flow channel.
Due to the centrifugal force acting on every liquid particle, the liquid inside the impeller is subjected to a greater centrifugal force, while the liquid inside the flow channel is subjected to a smaller centrifugal force. As the centrifugal forces experienced by the two are different in magnitude, it causes the liquid to undergo longitudinal vortex motion. The liquid relies on longitudinal vortices to repeatedly flow through the channels between the blades in the flow channel. Every time the liquid passes through the blade passage, the head increases, and finally the liquid is squeezed out and discharged. After the liquid is discharged, a local vacuum is formed in the channel between the blades, and the liquid continuously enters the impeller from the suction port and repeats the above motion process. In this way, the vortex pump continuously works by sucking in liquid while discharging it.
From the working principle of a general vortex pump, it can be seen that it functions like a multi-stage centrifugal pump. Each blade channel is equivalent to one stage, and the energy of the liquid increases once it passes through the channel. Therefore, the head of a general vortex pump is 2-5 times greater than that of a centrifugal pump at the same impeller diameter, making it a high head, low flow pump. Compared with centrifugal pumps of the same performance, vortex pumps have a smaller volume and lighter weight; Compared to positive displacement pumps with the same head, it is much smaller in size and simpler in structure. So generally, vortex pumps have the advantages of simple structure, compactness, small volume, light weight, and low cost
