What is the difference between large and small vacuum pumps

With the rapid development of China’s economy, the demand for imported vacuum pumps in industry and other fields is also growing. In the face of fierce competition in the vacuum pump market, how should users choose the products they need? What is the difference between large and small vacuum pumps? EVP vacuum pump manufacturer is here to answer your questions.

large vacuum pump features :

Simply put: high power, high limit vacuum (very small absolute pressure) (the smaller absolute pressure is, the higher the limit vacuum degree is). Some of them can even achieve 10 negative power PA, which is very close to the theoretical vacuum. The pumping rate is large, usually in L / S (L / s). It is widely used in industry.

But the price is high, the volume is big, the weight is big, the noise is high, the energy consumption is high, needs the regular maintenance, is not easy to move and so on. Some large vacuum pumps must use vacuum pump oil or lubricating oil, which will produce oil mist and pollute the working medium The above disadvantages are especially obvious in some occasions, such as the large vacuum pump, although it has a high vacuum degree, it is wasteful in low vacuum occasions. For example, when it is necessary to pump a small amount of gas for gas sampling, gas analysis, gas circulation, vacuum adsorption, gas transfer, pressurization, indirect water absorption, drainage, etc., the large vacuum pump exposes many disadvantages.

At this time, with a small vacuum pump, the coarse vacuum (low vacuum degree) can be satisfied, and the volume is small, the noise is low, the power consumption is small, easy to operate, easy to carry, maintenance free, can operate continuously for 24 hours, and also allows the medium to be rich in water vapor. Most importantly, because it is dry and oil-free, it does not need vacuum pump oil, so it will not pollute the working medium, interfere with the analysis of the medium and so on. And the price is much cheaper. So how to reduce these shortcomings, for the professional vacuum pump staff is a very difficult job, but it is still worth looking forward to.

small vacuum pump features:

Small size, low noise, small power consumption, easy to operate, easy to carry, maintenance free, can operate continuously for 24 hours, and also allows the medium rich in water vapor. Most importantly, because it is dry and oil-free, it does not need vacuum pump oil or lubricating oil, so it will not pollute the working medium, interfere with the analysis of the medium, etc. And the price is much cheaper.

With the wide application of small vacuum pump in various fields and the improvement of vacuum technology, the performance of small vacuum pump is also improving. For example, the limit vacuum degree of a high negative pressure small vacuum pump can even be reached, that is, the negative pressure is about – 0.09mpa; the maximum pumping rate can be up to: 28L / min; there are also small vacuum pumps that can simultaneously pump and pump, negative pressure (- 50kPa), maximum output Positive pressure (relative atmospheric pressure) 100KPA (about 1kg). Therefore, with the rapid development of science and technology, the continuous improvement of production level, the performance of small vacuum pump has also been greatly improved. In some occasions, small vacuum pump can replace large vacuum pump. Such change is not only the progress of vacuum pump industry, but also a good news for improving the productivity of the whole industry.