When you use the servo planetary reducer, there may be a phenomenon of air pumping. This phenomenon is not caused by a major problem.

　　However, we should solve it in time if it appears, and its specific solutions will be introduced to you:

　　1. The planetary reducer used for the higher servo motor cannot directly exhaust the atmosphere. For example, the direct exhaust of the atmosphere will cause the pressure difference between the intake port and the exhaust port of the reducer to be too large.

　　Overload the servo planetary reducer, and in order to ensure that it can reach a higher vacuum, it is necessary to ensure the space between the reducer rotors.

　　2. It is necessary to have a fore-stage pump during use, and a reducer that is initiated when the pressure in the system is sucked to a certain range by the fore-stage pump.

　　This can avoid overloading of the reducer. Fore-stage pumps can choose water ring vacuum pumps, rotary vane vacuum pumps, slide valve vacuum pumps, reciprocating vacuum pumps and other vacuum pumps that can directly exhaust the atmosphere.

　　3. As the rotor of the servo planetary reducer is constantly turning and turning, the sucked gas is sucked into the space between the rotor and the pump casing from the air inlet, and then discharged through the exhaust port, because the space is fully closed after air is sucked.

　　Therefore, the gas in the pump cavity does not shrink and expand, but when the top of the rotor turns over the edge of the exhaust port, the space communicates with the exhaust side.

　　As the gas pressure on the exhaust side of the servo planetary reducer is relatively high, a part of the gas rushes back into the space, causing the gas pressure to rise sharply.When the rotor continues to transform, the gas is discharged out of the pump.