What is the relationship between the rotational speed of vertical long shaft pump and product life?

The pump shell of vertical long-axis pump is filled with the transported liquid. After starting, the impeller is driven by the shaft to rotate at high speed, and the liquid between the blades must also rotate with it. Under the action of centrifugal force, the liquid is thrown from the center of impeller to the outer edge of impeller to obtain energy, leaving the outer edge of impeller to enter the volute pump shell at high speed.

In the volute, the liquid decelerates due to the gradual enlargement of the flow passage, and converts part of kinetic energy into static pressure energy. Finally, it flows into the discharge pipeline at a higher pressure and sends it to the place where it is needed. When the liquid flows from the center of the impeller to the outer edge, a certain vacuum is formed in the center of the impeller. Because the pressure above the liquid surface of the tank is greater than that at the inlet of the pump, the liquid is continuously pressed into the impeller. It can be seen that as long as the impeller keeps rotating, the liquid will be continuously absorbed and discharged.

When there is air in the pump housing, the centrifugal force is smaller because the density of air is much smaller than that of liquid. Therefore, the pressure difference between the upper surface of the tank and the suction port of the pump is not enough to pressure the liquid in the tank into the pump, that is, the pump has no self-priming ability, so that the pump can not deliver liquid. In order to fill the pump with liquid, a bottom valve with a filter net is usually installed at the bottom of the suction pipe. The bottom valve is a check valve, and the function of the filter net is to prevent solid material from entering. Damage to impeller or impediment to normal operation of pump.

Through the analysis of the working principle of the disadvantaged long-axis pump, we have a better understanding of the long-axis pump, which is a kind of equipment far away from our life. With the long-axis pump playing an increasingly important role in many industries, the study of the long-axis pump will be further, and the working principle of the long-axis pump will be better optimized.

The repair cycle related to replacement of worn parts of long shaft pump is related not only to worn parts, but also to parts determined by relative wear resistance. In fact, the most significant is the relationship between wear rate and specific speed of vulnerable parts (impeller, impeller and seal at inlet side of pressure chamber) of long shaft pump, so that is the relationship between the life of parts and specific speed.

The pump shell of vertical long-axis pump is filled with the transported liquid. After starting, the impeller is driven by the shaft to rotate at high speed, and the liquid between the blades must also rotate with it. Under the action of centrifugal force, the liquid is thrown from the center of impeller to the outer edge of impeller to obtain energy, leaving the outer edge of impeller to enter the volute pump shell at high speed.

In the volute, the liquid decelerates due to the gradual enlargement of the flow passage, and converts part of kinetic energy into static pressure energy. Finally, it flows into the discharge pipeline at a higher pressure and sends it to the place where it is needed. When the liquid flows from the center of the impeller to the outer edge, a certain vacuum is formed in the center of the impeller. Because the pressure above the liquid surface of the tank is greater than that at the inlet of the pump, the liquid is continuously pressed into the impeller. It can be seen that as long as the impeller keeps rotating, the liquid will be continuously absorbed and discharged.

When there is air in the pump housing, the centrifugal force is smaller because the density of air is much smaller than that of liquid. Therefore, the pressure difference between the upper surface of the tank and the suction port of the pump is not enough to pressure the liquid in the tank into the pump, that is, the pump has no self-priming ability, so that the pump can not deliver liquid. In order to fill the pump with liquid, a bottom valve with a filter net is usually installed at the bottom of the suction pipe. The bottom valve is a check valve, and the function of the filter net is to prevent solid material from entering. Damage to impeller or impediment to normal operation of pump.

Through the analysis of the working principle of the disadvantaged long-axis pump, we have a better understanding of the long-axis pump, which is a kind of equipment far away from our life. With the long-axis pump playing an increasingly important role in many industries, the study of the long-axis pump will be further, and the working principle of the long-axis pump will be better optimized.

The repair cycle related to replacement of worn parts of long shaft pump is related not only to worn parts, but also to parts determined by relative wear resistance. In fact, the most significant is the relationship between wear rate and specific speed of vulnerable parts (impeller, impeller and seal at inlet side of pressure chamber) of long shaft pump, so that is the relationship between the life of parts and specific speed.