In our daily use of Roots vacuum pump, with the increase of the use of time, the performance of Roots vacuum pump will be more or less affected. So what measures can effectively improve or even enhance the performance of Roots vacuum pump? In fact, there are many ways to improve the performance of vacuum pumps. On the basis of technical research and experience accumulation, the following improvement and enhancement methods are summarized, such as the influence of the rotational speed of the Roots vacuum pump, the influence of the surface clearance between the pump body and the impeller and so on. Familiarization with these specifics will play a useful role in improving the performance and stability of operation.
1、Inlet valve
Roots vacuum pump is usually used for pumping vacuum, but not all places require the lower the vacuum the better, while some places require the vacuum to be controlled within a certain requirement, or the pressure in the pump chamber is too low, which will cause serious cavitation in the pump chamber, leading to excessive vibration and noise of the pump and affecting the use time. When the above environment occurs, the regulating valve can be closed appropriately to eliminate the influence of vibration and noise, so as to achieve the required vacuum degree requirement. This is a way to double the correct use of Roots vacuum pump.
2、The influence of cooling system
The replenishment of coolant needs to be carried out one after another. However, how to stop the supply of coolant, how to determine the flow and pressure of the supply of coolant, and how to improve the function of the vacuum pump. affect the performance of the Roots vacuum pump. The invention was then iteratively verified and rehydration was stopped using the pump's self-priming method. As the pump stops rehydration in the suction chamber or from the impeller end face, the coolant has been started for some time, i.e., energy is lost to a certain extent. In addition, at this point, the rehydration effect will reach and lose the liquid ring, which also reduces the useful work of the coolant on the gas and consumes part of the energy. It can give full play to the influence of the liquid ring, real-time extrusion of the compressed gas generated by the vacuum pump heat, with gas to make up for the pump cavity extrusion of the coolant, to achieve a smooth shaft seal and so on. At the same time improve the operation reliability, stability and effectiveness of Roots vacuum pumps
3、Specific gas-liquid separation facilities
The extruded gas of Roots vacuum pump firstly enters a grade of gas-water separator, from which the extruded gas is extruded. The cooling liquid filled with ablative gases is transported to the next stage of the low-pressure gas-water separator. Due to the low pressure, the gases melted in the liquid are released. Due to the recycling application of the coolant, the pressure of the liquid entering from the next stage separator becomes very low and therefore needs to be pressurized with a pump, which needs to be pressurized before the vacuum pump is stopped for refilling.
Overall, the Roots vacuum pump pump is characterized by fast start-up, low power consumption, low operating and maintenance costs, fast pumping speed and high efficiency. It is insensitive to the small amount of water vapor and dust contained in the pumped gas, and has a large pumping speed in the pressure range of 100~1 Pa, which can quickly remove the suddenly released gas.
