Chemical principle, thank you, cattle man replied, ha ha!
Centrifugal pump, impeller rotating speed, the centrifugal force, the pump shell water thrown to the surrounding water pump, water pump at the same time, the center of the impeller formed vacuum because the water was thrown, sump water will be large under atmospheric pressure. A constant flow of water from the centrifugal pump is formed by continuously flowing into the suction port of the impeller along the suction pipe.The volute pump casing is used to collect the water flow from the impeller and is fed into the pressure pipe of the water pump. The pump case is usually cast into a volute shape, and the water passing part of the pump is provided with favorable hydraulic conditions. When the impeller is working, the flow rate is gradually increasing along the gradual extended section of the spiral case. In order to reduce the hydraulic losses, the flow rate along the spiral case should be extended gradually in the pump design, and the flow velocity of the flow is a constant. The water is discharged from the volute and then flows into the pressure pipe through a tapered diffuser.
Pump case. The pump housing of centrifugal pump is the volute shape that contains and transports liquid. It is composed of pump cover and volute. The pump housing is a stationary part. The pump cover is the suction chamber of the pump. The function is to pump the water in the suction pipe evenly into the impeller with minimal loss. According to the structure, the suction chamber can be divided into straight conical suction chamber, annular suction chamber and semi spiral suction chamber. The cochlea is composed of a cochlear cell and a diffusion cone. The main function of the volute chamber is to collect the water flow from the impeller and maintain a constant velocity of water in the volute chamber to reduce head loss by increasing the cross section of the impeller. The water is discharged from the cochlear chamber and is passed through the diffusion cone tube and the pressure tube. The diffusion cone serves to reduce the velocity of the flow and change the partial kinetic energy of the flow to pressure energy.
I. impeller. The impeller is also called the wheel or wheel, it is the role of the mechanical energy transfer to the liquid being pumped, increasing the energy of the fluid flows through the impeller after.
The working process of centrifugal pump is actually a process of energy transfer and transformation. It converts the mechanical energy of the power machine to the kinetic energy and pressure energy of the fluid to be transported. In this process of energy transmission and transformation, there will inevitably be a lot of energy losses, the greater the loss, the lower the efficiency, the worse the performance of the pump.
