As is known to all, Centrifugal Pump is the use of a centrifugal impeller rotation and make the water has come to work. Pump before the start, it is necessary to make the pump casing and suction tube filled with water, and then start the motor, make and water pump shaft to drive the impeller for high speed rotation, water centrifugal motion, be left to the impeller outer edge and the volute pump shell of the water flow into the pump pressure. There are many types of Centrifugal Pumps such as mud agitator. And there are many factors that affect mud agitator Centrifugal Pump performance. They are flow, lift,Pumping, liquid, temperature, range, the system pressure and shaft power.
The flow of water pump, also known as carrying capacity, is one important factor that affects mud agitator Centrifugal Pump performance. It refers to the water pump of water volume in unit time. It is expressed by Q, and the unit is m3 / H, L/S.
(Centrifugal pump lift and rally in height, lifting height is different, the
rally in height of the pump is to point to pump the liquid from low to high
vertical height. Only when the pump of import and export container is 0.1 MP,
import and export of pipe diameter and the same pipeline resistance can't
Timing, pump lift and the lifting height is equal. )
The height of the pump head is refers to the water pump to pumping, usually expressed in H, the unit is m. Centrifugal pump lift with the center line of the impeller as a benchmark, and consists of two parts. From the center line of the pump impeller to the vertical height of the water surface, the height of the water pump to suck up the water, is called a suction head, hereinafter referred to as suction; From the center line of the pump impeller to the height, the vertical surface of the pool that can pump up to the height of the water pressure, called water head pressure, pressure range for short. The pump head = suction head + pressure water head It should be pointed out that lift, as a factor that affects mud agitator Centrifugal Pump performance nameplate marking refers to the pump itself can produce lift, it does not contain Mud agitator head loss caused by friction. When choosing pumps, attention should not be neglected. Otherwise, it won’t spring up.
Pump at the inlet of the liquid in the impeller at work because of a certain vacuum pressure will produce gas, evaporation of bubbles in the liquid particle collision movement, on the impeller of metal surface erosion, undermining the impeller of metal, the vacuum pressure is called vaporization pressure, NPSH refers to the unit weight at the entrance of pump suction fluid have the surplus energy more than vaporization pressure, unit, rice (NPSH) r. Suction is the necessary NPSH Δ, as a factor that affects mud agitator Centrifugal Pump performance. Namely allow liquid absorption of vacuum pump, which allows the installation height of pump, unit from rice. = standard atmospheric pressure suction (10.33 m) - NPSH - safety quantity (0.5 meters) standard atmospheric pressure can vacuum pipeline height 10.33 meters.