Blister machine vacuum pump classification Roots pump

From the perspective of foreign Roots pump production, several large foreign companies, such as Leybold, Balzers, Alcatell, Edwards and ULVAC, the sales of their Roots pumps account for less than 5% of the global Roots pump sales. , the total of these 5 is only 20%, the output of Roots pumps is not large, but the price of foreign Roots pumps is much higher than that of domestic pumps. Almost all large or small high vacuum and medium vacuum systems at home and abroad are equipped with Roots pumps in order to shorten the pumping time and improve production efficiency, so domestic Roots pumps must try to enter the international market on the basis of occupying the domestic market. It is necessary to further reduce the vibration and noise of the domestic Roots pump, completely solve the problem of oil leakage of the shaft seal, improve the appearance quality of the pump, and improve the smoothness and cleanliness of the pump. In addition, it is also necessary to consider that the power frequency of some countries and regions is 60Hz, and it is necessary to ensure the reliability of the long-term operation of the Roots pump under the condition of increasing the speed.