The relationship between the speed and pressure of the screw pump
The relationship between the number of revolutions and pressure of a screw pump is very close. The following is a detailed description of this relationship:
1. The influence of the number of revolutions on pressure
Proportional relationship:
Under normal circumstances, the number of revolutions of a screw pump is proportional to the pressure it generates. That is to say, when the number of revolutions of a screw pump increases, the pressure it generates will also increase accordingly.
This is because the working principle of a screw pump is to push the fluid for delivery through the rotation of the screw. The increase in the number of revolutions means that the number of revolutions of the screw increases per unit time, thereby pushing more fluid and generating greater pressure.
Pressure calculation formula:
The pressure calculation formula for a screw pump is P=Q×H×ρ/η, where P represents pressure, Q represents flow, H represents head, ρ represents medium density, and η represents pump efficiency. From this formula, it can be seen that flow Q (proportional to the number of revolutions) is one of the important factors affecting pressure P.
2. Limitation of pressure on revolutions
Rated pressure range:
Each type of screw pump has its specific rated pressure range. In practical applications, it is necessary to ensure that the number of revolutions of the screw pump operates within its rated pressure range to avoid equipment damage or reduced efficiency due to excessive or low pressure.
Pressure stability:
When the screw pump operates under high pressure, special attention should be paid to the stability of its number of revolutions. Because the instability of the number of revolutions may cause pressure fluctuations, which will affect the normal operation of the equipment and the delivery effect of the fluid.
3. Precautions in practical applications
Choose the appropriate number of revolutions:
In practical applications, it is necessary to select the appropriate number of revolutions of the screw pump according to factors such as the properties of the fluid, the delivery distance, and the pipeline resistance. To ensure that the equipment operates in an efficient and stable state.
Regular inspection and maintenance:
In order to ensure the long-term stable operation of the screw pump, it is necessary to inspect and maintain it regularly. Including checking the wear of the pump, cleaning the pump body and screw and other components, replacing damaged parts, etc.
In summary, there is a close relationship between the number of revolutions and pressure of the screw pump. In practical applications, it is necessary to select a suitable range of revolutions according to specific needs and equipment characteristics to ensure stable operation and efficient pumping of the equipment.
