Working principle of single-stage double-suction split volute centrifugal pump
The working principle of the single-stage double-suction split volute centrifugal pump is based on the principle of centrifugal force and kinetic energy conversion. The following is a detailed explanation of its working principle:
First, when the centrifugal pump is started, the drive motor transmits power to the pump shaft, and the pump shaft drives the impeller to rotate at high speed. The impeller is the core component of the centrifugal pump. It is located in the pump casing and is closely connected to the pump shaft. The gap between the pump casing and the impeller is very small, ensuring that the liquid can flow from the low-pressure area to the high-pressure area.
Secondly, a liquid suction port is provided in the center of the pump casing, which is connected to the suction pipe. The liquid enters the pump through the bottom valve and the suction pipe and is quickly sucked in by the impeller. Since the impeller is a double-suction structure, the liquid enters the impeller from both sides at the same time. This design not only improves the suction performance of the pump, but also balances the axial force and reduces the vibration and noise of the pump.
Next, when the liquid is sucked into the impeller, as the impeller rotates, the liquid is thrown from the midpoint of the impeller to the outer edge under the action of centrifugal force to obtain energy. In this process, the kinetic energy of the liquid is converted into pressure energy. At the same time, in the volute, the liquid slows down due to the gradual expansion of the flow channel, and part of the kinetic energy is further converted into static pressure energy.
Finally, the liquid flows into the discharge pipe at a higher pressure and is transported to the target location through the outlet pipe. During the whole process, as long as the impeller keeps rotating, the liquid will be continuously sucked in and discharged to achieve continuous fluid delivery.
In summary, the single-stage double-suction split volute centrifugal pump achieves continuous liquid delivery through the high-speed rotation of the impeller and the action of centrifugal force. Its working principle is simple and efficient, and it is widely used in water treatment, water supply and drainage systems and other projects.
