|Origin:||Made In China|
|Category:||Industrial Supplies / Machinery / Pumps Vacuum Equipment|
|Label:||Roots Vacuum Pump , Rotary Vacuum Pump , vacuum pump|
1. Summary of ZJ series Roots vacuum pump
ZJ Series Roots Vacuum Pump is a kind of rotary variable capacity vacuum pump without internal compression, also known as mechanical booster pump. Its advantage is that it has a higher pumping rate at a lower inlet pressure. It is one of the main pumping equipment to obtain medium and high vacuum at present. Its working principle is similar to Roots blower, and it mainly consists of a pair of synchronous high-speed pumps. The rotary "8" shaped rotor is composed of 2.5 circular pump chambers (Fig. 1). ZJ series Roots vacuum pumps can not be exhausted alone. They must be used in series with the front-stage pumps (such as slide valve pumps, rotary vane vacuum pumps, water-ring vacuum pumps, oil-ring pumps, etc.). The pressure in the pumped system can only start to work when the pressure in the pumped system is pumped by the front-stage vacuum pump to the pressure that Roots vacuum pumps can accept. Otherwise, it will be damaged by overload and overheating. Bad. The ZJ series Roots vacuum pumps in series in front of the inlet of the front stage pump can improve the vacuum degree of the front stage pump and greatly increase the pumping rate within the effective range. The limit pressure of ZJ series Roots vacuum pump is determined by the front stage pump. The data in the technical parameter table are the minimum limit pressure when the standard configuration (with two-stage oil seal mechanical vacuum pump) is used.
ZJ series Roots vacuum pumps are widely used in vacuum casting, vacuum melting, vacuum degassing, vacuum distillation and vacuum drying of chemical and pharmaceutical industries because of their large pumping speed in a wide range of pressure (1-1 x 104pa) and insensitivity to dust and water vapor in the extracted gas.