What are the advantages of vacuum pump unit assembly

Different vacuum systems require different degrees of vacuum. Therefore, it is often completed by a set of vacuum units, that is, vacuum pumps working in different pressure ranges are connected in series.

1. All pumps have initial working pressure, and the traditional high vacuum pump is in the range of several PA. Therefore, the front stage pump must pre pump to this pressure before the main pump can start working. A middle vacuum pump is added to cooperate with the previous low vacuum pump to form a vacuum pump unit, which can reach the working pressure of the main pump in a short time, so that the system can enter the working pressure as soon as possible and ensure the service efficiency of the equipment.

2. High vacuum pumps are limited by the pressure resistance of the front stage, that is, if the front stage is higher than a certain pressure, the pump cannot work normally. When the current stage pump reaches this critical pressure, the pumping speed will often decrease, so the exhaust flow of the previous stage pump may be less than that of the main pump. This inconsistency of flow destroys the requirements of flow continuity and will inevitably cause the vacuum unit to not work normally. A medium vacuum pump is connected between the high and low vacuum pumps, which can play a connecting role, the flow is continuous, and each pump can work in a normal state.