Is a centrifugal pump a pressurized pump?

The pump itself has a certain lift and will have a certain pressure head. This is determined by the specific technology of the pump itself. I personally think that it cannot be used as a pressurizing pump. Positive displacement pumps can play a pressurizing role, such as gear pumps, metering pumps, etc.

In addition to transporting fluids, the pump installation can of course also use a centrifugal pump to achieve pressurization. Just imagine that if the pressure at your suction end is relatively high, then the pressure will definitely rise after the pump works, but the pressure difference of the centrifugal pump must be determined first.

In order to speed up circulation, the pipeline pump installed on the water heating pipeline can be understood as a pressure pump. The pressure pump on the fire water line is a multi-stage centrifugal pump. From this point of view, the centrifugal pump cannot be said to be a pressure pump, so this is just a matter of understanding.

I think what everyone said makes sense. A centrifugal pump has the function of pressurizing, but it is not a simple pressurizing pump because its pressure head is very limited. However, a high-speed centrifugal pump can be used as a pressurizing pump, so it cannot be generalized. There are many types and uses of centrifugal pumps. We have a working condition where the outlet pressure of a centrifugal pump reaches 3.5MPa, so it mainly depends on the occasion and purpose it is used.

The boss said that ordinary centrifugal pumps, magnetic pumps, canned pumps, etc. can achieve the function of pressurization (inlet pressure plus its own pressure), which is correct. The liquid filled in the pump rotates with the impeller, generating centrifugal force and being thrown out to all directions to form a low pressure in the center of the impeller. The liquid is sucked into the impeller under the action of the inlet pressure. The pressure and velocity of liquid flowing out of the impeller increase. Volute - gathers and directs flow. The diffuser tube increases, the flow rate decreases, and most of the kinetic energy is converted into pressure energy and then discharged. The impeller keeps rotating, and suction and discharge are continued continuously. The energy added when the liquid passes through the pump is the result of the work done by the prime mover on the liquid through the impeller.

This depends on your application situation and the purpose of your placement. It includes factors such as the medium being transported. It cannot be explained simply.

Agree with the 8th floor. The key is to look at the occasion and purpose of use. Just choose a reasonable one!

The centrifugal pump delivers liquid by relying on a high-speed rotating impeller, and the liquid obtains energy under the action of inertial centrifugal force. After the liquid leaves the impeller and enters the pump casing, the flow channel in the casing gradually expands, which decelerates the liquid and converts part of the kinetic energy into static pressure energy. Then the liquid with higher pressure enters the discharge pipe from the discharge port of the pump and is transported to the required place. In a sense, the pump acts as a booster.

The mechanical pump provides a certain amount of energy to the medium to accelerate it, including increasing its pressure.

Academic questions. It is absolutely true that a centrifugal pump can increase pressure. I find it meaningless to say that a pressure pump is not a pressure pump. The key point is that it can indeed increase pressure, not to mention that there seems to be no exclusive concept of a "pressurization pump".