Precautions for purchasing oil-free vacuum pump

Now technology drives the innovation of products, and the performance of oil-free vacuum pump products has been greatly improved, which is loved by many industries. However, when purchasing oil-free vacuum pump, we can not choose manufacturers at will. What should we pay attention to when purchasing oil-free vacuum pump? 

Generally, the limit vacuum degree of the pump is 0.5 to 1 order of magnitude higher than that of the vacuum equipment. Correctly select the operating point of oil-free vacuum pump. Each type of pump has a fixed operating pressure range, such as: 2BV series oil-free vacuum pump operating pressure range of 760mmhg ~ 25mmhg (absolute pressure). In such a wide pressure range, the pumping speed of the pump varies with the pressure (refer to the function curve of the pump for detailed changes), and its stable working pressure range is

Therefore, the operating point of the pump should be selected in this range rather than long-term operation under 25 ~ 30mmhg. Compared with oil pump, oil-free vacuum pump has low vacuum degree and small air extraction capacity, but it is small in size, simple in installation, simple in maintenance, easy to move, does not pollute the environment, does not produce lampblack, especially in the laboratory with higher request. It is also one of the equipment in the laboratory.

Therefore, when purchasing the oil-free vacuum pump, the vacuum degree of the request should be confirmed first. If the demand is high, the vacuum pump selected should be higher than the vacuum degree required, otherwise, the vacuum pump can not reach the request of vacuum pumping, and the work request will not be reached. The other is the pumping rate of oil-free vacuum pump, which is slightly higher than the required pumping rate, so as to better meet the demand. Finally, we can see whether the extracted gas is corrosive or not. If the corrosive gas is corrosive, it is necessary to use special materials to meet the demand.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces