Vpis v blog od Mully xiao

vidno vsem

First, the mixed flow pump from the appearance, the structure is between the centrifugal pump and the axial flow pump; Mixed flow pump pumping principle, the high speed rotation of the impeller, both centrifugal pump centrifugal force, and axial pump lift, mixed flow pump by the mixing of these two forces and pumping.

Second, the performance of the mixed flow pump is between the centrifugal pump and axial flow pump mixed flow pump from the appearance, structure is between the centrifugal pump and axial flow pump; Mixed flow pump pumping principle, the high speed rotation of the impeller, both centrifugal pump centrifugal force, and axial pump lift, mixed flow pump by the mixing of these two forces and pumping.

Mixed Flow Pump

Three, the mixed flow pump performance is also between the centrifugal pump and axial flow pump, it and the centrifugal pump comparison, lower head, and flow; It is compared with the axial flow pump, the head is higher, but the flow is smaller. This for China's vast territory, complex terrain, more than a pump according to the local conditions of the selection

Four, the mixed flow pump performance to work parameters to express. Such as flow, head, power, efficiency, speed and so on. At a certain speed, the flow is taken as a variable, that is, if the flow of the pump is changed, the head, power and efficiency of the pump will all change accordingly. The relationship between the changes of the law, the comprehensive drawing into a few curves to express, this is the pump performance curve.

Five, the mixed flow pump performance curve shape is also between the centrifugal pump and axial flow pump, for high head mixed flow pump, its flow and head, flow and power of the relationship between the change law is close to the centrifugal pump, in use, can be used to close the valve to start, then the power is minimum, the safety of the power machine. For low head mixed flow pump, performance parameters between the change rule is close to the axial flow pump, in use, should not be used to close the valve to start, but should open the valve to start, then the power is relatively small, the motor is not easy to be burned.