ZJ type Roots vacuum pump

NegotiableUpdate on 05/27

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Overview

Roots vacuum pump, also known as mechanical booster pump, is a rotary volumetric vacuum pump

Product Details

Roots vacuum pump, also known as mechanical booster pump, is a rotary volumetric vacuum pump. Two 8-shaped rotors maintain a certain gap with the pump chamber, and a pair of synchronous reverse rotating gears prevent the two rotors from contacting each other and maintain a certain gap when rotating in the pump chamber. The schematic diagram on the right shows the structure of the pump. From Figure I to IV, the rotor rotates in the pump chamber and completes a suction and exhaust process.

High rotational speed and high volumetric efficiency.
Simple structure, easy operation and maintenance.
The rotor is locked and there is no axial movement phenomenon.
Adopting high-precision transmission gears and good dynamic balance, with low noise and smooth operation.
Adopting mechanical seal, the pump chamber is an oil-free structure, suitable for extracting general air and various special gases.
Compared with other mechanical vacuum pumps, it is energy-saving.
It can be matched with various types of front-end pumps and can be widely used in various process ranges.
Air cooling and water cooling methods can be used to meet different working conditions requirements.

The advantage of Roots vacuum pump is that it still has a high pumping rate at lower inlet pressures, but Roots vacuum pump cannot be used alone and must be used in conjunction with the preceding vacuum pump. The Roots vacuum pump can only be started when the current level vacuum pump draws the system pressure to the allowable starting pressure of the Roots vacuum pump.

According to different working pressures and process conditions, the front-end vacuum pump of Roots vacuum pump can adopt oil sealed mechanical vacuum pump, liquid ring vacuum pump, reciprocating vacuum pump, etc. The maximum pressure that can be achieved by Roots vacuum pumps after configuring different types of front-end vacuum pumps varies.

Roots vacuum pump can be widely used in any vacuum system that requires high pumping speed and medium vacuum (10-1-10-2Pa), such as vacuum coating, vacuum welding furnace, vacuum heat treatment furnace, large-scale space simulation test, lamp and bulb manufacturing, laser manufacturing, vacuum packaging equipment, automobile manufacturing, centralized vacuum pumping system, various chemical processes, vacuum degassing, vacuum dehydration, vacuum freeze-drying, vacuum distillation.

1. The pumping rate refers to the pumping rate measured at the inlet pressure of a Roots vacuum pump within the range of 67 Pa to 2.67 Pa, under the conditions of using the recommended front-end pump.

2. Ultimate pressure refers to the low value of stable air partial pressure measured at the pump inlet using a compression vacuum gauge after sufficient pumping, without any additional containers, and with a sealed pump inlet without air intake, under the conditions of using the recommended front-end pump.

3. The above performance indicators are obtained under the conditions of using the recommended front-end pump. Users can choose different front-end vacuum pumps according to different situations, but their main performance indicators may vary.