Screw vacuum pump dry operation, environmental protection, durability, low noise and other common advantages. However, in practical applications, for example, when using equipment for some gases containing particles, we also need to try to avoid the formation of particles due to chemical reactions in the medium in the vacuum pump in order to prevent accidents. What measures can prevent the formation of particles in the cavity of screw vacuum pump?
1. Properly increase the pump temperature. The sublimation and solidification of substances are functions of pressure and temperature, which vary with different substances. Therefore, increasing the temperature in the screw vacuum pump can prevent some media from forming particles due to gas solidification during the compression process in the pump.
2. Reduce the concentration of reactive gases. The number of particles generated by gas reaction per unit time is related to the gas concentration, so the formation of particles can be reduced by filling inert gas into the screw vacuum pump to reduce the concentration of reaction gas.
3. Increase the air velocity in the suction passage of the screw vacuum pump. In order to prevent the deposition of suspended solid particles, the flow speed of gas is greater than the critical speed of particle deposition, so as to ensure that particles are discharged with the airflow and prevent deposition.
The above measures are taken to prevent the formation of particles in the cavity of the screw vacuum pump.