NZJQ Multistage Gas circulation-cooled Roots Pump

1.The NZJQ series multi-stage gas-cooled Roots vacuum pump features several rotors arranged in series on a single rotor shaft. This design effectively functions like multiple Roots vacuum pumps connected in series. The multi-stage compression system provides a high compression ratio, enhances vacuum performance, and improves energy efficiency. Each stage of the pump is equipped with a return cooling port, which cools the rotors at the exhaust end, ensuring controlled low-temperature operation.

2.The NZJQ series of multi-stage, gas-cooled Roots vacuum pumps provide a high ultimate vacuum. These pumps, which range from 3 to 6 stages, can achieve ultimate pressures as low as 1 Pa from atmospheric pressure. Multi-stage Roots vacuum pumps are commonly used in industries such as semiconductors, chemicals, pharmaceuticals, and vacuum metallurgy, and they do not require a backing pump.

3.The NZJQ series multi-stage gas-cooled Roots vacuum pump features a tri-lobe or quad-lobe rotor structure. It incorporates a wide-body sealing surface profile and a large-channel cooling return design. This configuration ensures stable operation, even under high differential pressure, while maintaining a low temperature rise.

4.The NZJQ series multi-stage gas-cooled Roots vacuum pump offers a variety of seal options. The pump can use lip seals, mechanical seals, nitrogen seals, and magnetic seals, ensuring high vacuum performance and stable system operation.

5.The NZJQ series of multi-stage gas-cooled Roots vacuum pump is compact and requires minimal space.

6.The NZJQ series multi-stage gas-cooled Roots vacuum pump is very efficient and energy-saving. Its multi-stage compression mimics the effect of several Roots pumps connected in series, leading to considerable energy savings.

7.The NZJQ series multi-stage gas-cooled Roots vacuum pump is designed for efficient heat exchange. It features cooling water jackets on both the front and rear oil tank covers, ensuring precise temperature regulation for the pump chamber, gearbox, and bearing box.

8.The NZJQ series multi-stage gas-cooled Roots vacuum pump is available in various material options to suit different applications. To combat corrosive conditions, the rotors and chambers can either be coated with a nickel-phosphorus alloy or made from specialized materials such as stainless steel, duplex stainless steel, titanium, or Hastelloy. This effectively addresses the problem of corrosive medium.

9.The NZJQ series multi-stage gas-cooled Roots vacuum pump consists of core components that are manufactured with high-precision processing equipment. The multi-stage rotors are produced using the DMG MORI nine-axis, five-axis simultaneous turning-milling composite machining center, which accurately shapes the rotor profiles. This intelligent manufacturing equipment ensures that the components of the Roots pump are more precise and can be universally interchanged.

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