The working principle of Roots vacuum pump is mainly based on the principle of dual rotor motion, and the specific process is as follows: 12
Inhalation process: When the Roots vacuum pump starts working, the two rotating Roots impellers interlock with each other and drive gas to be sucked in through rotation. During this process, gas is drawn into the pump from the inlet.
Release process: As the Roots impeller continues to rotate, when the gap between the convex part of the impeller and the internal gas container approaches its minimum, the contact between the convex part of the impeller and the groove is strong, sealing the gas in the container.
Exhaust process: The Roots impeller continues to rotate, and the gap between the impellers gradually increases, causing the gas inside the container to be pushed towards the exhaust port. During this process, gas is expelled from the pump.
Re suction process: As the Roots impeller continues to rotate and the gas inside the container is pushed out, negative pressure is generated again, allowing new gas to be sucked in again. Through this cycle, the Roots vacuum pump is able to continuously suck in and discharge gas, thereby achieving the generation of vacuum.
In addition, during the operation of Roots vacuum pumps, heat is generated due to the transportation and compression of gases, which needs to be dissipated through cooling devices to ensure the normal operation of the pump and expand its range of use.
Roots vacuum pumps have the characteristics of fast start-up, low power consumption, and low operation and maintenance costs, and are widely used in fields such as petroleum, chemical, plastic, pesticide, aerospace, etc. Meanwhile, due to the fact that Roots pumps are vacuum pumps without internal compression, their compression ratio is usually very low. Therefore, high and medium vacuum pumps require a front-end pump to assist in achieving higher vacuum levels.
Rotating Lobes: The pump features two lobes that rotate in opposite directions within a specially shaped housing.
Air Trapping: As the lobes turn, they trap air in the cavities between them and the housing.
Compression: The rotation reduces the volume of the trapped air, which is then pushed toward the discharge outlet.
Continuous Cycle: This action continuously draws in air, creating a vacuum in the connected system.
Non-Contact Design: The lobes do not touch each other, minimizing wear and enhancing durability.
