来源：https://www.sdqyjn.com/ 日期：2021-08-05 浏览量：
Not long ago, during the installation and commissioning of screw blowers, a customer of Qingyue energy saving, a screw blower manufacturer, found that the head of Qingyue energy saving equipment with the same power is much larger than that of another brand, so it leads to the question in the title. Why?
Screw fan manufacturers to explain briefly. We know that there are many types of positive displacement blowers such as screw blowers. No matter which type is specific, they realize air transmission through the periodic change of working chamber volume. Air volume is one of the basic parameters in equipment selection. How do different models achieve different air volume under certain pressure?
Taking the screw blower products of screw fan manufacturers as an example, the influencing factors of air volume basis are the volume and speed of working cavity formed by the enclosure of rotor, rotor and cavity. The volume of the working chamber determines the amount of gas transmitted by the blower rotor in a cycle. The speed is easier to understand, which determines how many periodic changes the rotor can complete per unit time. Therefore, without considering the influence factors such as leakage, the increase of working chamber volume and the increase of rotating speed can effectively improve the air volume of the equipment.
In practical application, the volume of working cavity of screw blower is related to the profile on the one hand and the geometric size of rotor and cavity on the other hand. On the premise of a certain profile and speed, to increase the air volume, it is necessary to increase the volume of rotor and cavity, which involves the increase of equipment volume and cost in all aspects.
It is more convenient to increase the air volume by rotating speed, but it involves the bearing capacity, sealing and other problems of the bearing. The higher the speed, the more serious the bearing wear and the easier the seal leakage, so it needs to be handled properly. In addition, increasing the air volume through high-speed rotation will also increase the air flow rate at the outlet of the blower, resulting in additional noise problems and pressure loss, as well as dynamic balance, wear and other problems caused by high-speed and large centrifugal force. Maintenance needs to be more detailed.