How to select a LONGMECH Roots blower
News 14.06.2022
Before selecting a model for the LONGMECH Roots blower, it is necessary to clarify the following key information to ensure the accuracy and applicability of the selection:
Purpose and usage status
It is necessary to provide detailed information about the specific purpose, usage location, and operational conditions of the LONGMECH blower. For instance, whether it operates continuously or intermittently, and whether it is used for gas conveyance or in a vacuum environment. This information is crucial for assessing the workload and applicable scenarios of the blower.
II. Air volume requirements
It is necessary to clarify the state corresponding to the required air volume, whether it is the standard state (i.e., one atmosphere, 20℃, and 65% relative humidity) or the reference state. It should be noted that unless specifically stated, the air volume usually referred to is the air volume at the inlet state, not the outlet state.
III. Pressure-related information
It is necessary to specify whether the operating pressure remains stable at a specific value or whether it is subject to change at any given time. If there is a change in pressure, the relative relationship between the pressure change and the air volume needs to be explained. Generally speaking, when the pressure decreases, the air volume will increase, and conversely, when the pressure increases, the air volume will decrease. At the same time, the specific range of pressure change needs to be determined. In addition, it is necessary to clarify whether the set pressure is the outlet static pressure, the pressure difference between the inlet and outlet, or whether the inlet pressure is one atmosphere. If the inlet pressure is not one atmosphere, the specific pressure values of the inlet and outlet need to be specified.
IV. Characteristics of the transported gas
Including the type and composition of the gas; the chemical properties of the gas, and the recommended material for the blower based on these properties; whether the gas is explosive and toxic. If the above items are not specified, it will be handled by default according to the standard for conveying general air.
V. Gas temperature
The standard specifications of the LONGMECH Roots blower are suitable for conveying gases with an inlet temperature at room temperature. If the inlet temperature is too high, it may cause the rotor to become stuck in the cylinder due to thermal expansion. Therefore, when the inlet temperature is higher than room temperature, it is important to inform the manufacturer so that they can make special designs to accommodate the high temperature environment.
VI. Motor parameters
Please provide relevant information such as the voltage and energy efficiency rating of the motor power supply, as well as whether variable frequency control is required. This will help match the appropriate motor and ensure the normal operation of the blower.



