The Roots vacuum pump for vacuum feeding is a rotary volumetric vacuum pump widely used in various situations that require the creation of a medium vacuum environment, especially playing an important role in vacuum feeding systems. Here is a detailed introduction to it:
1、 Working principle
The working principle of Roots vacuum pump is based on the reciprocating motion of dual rotors (also known as Roots impellers or rotors). These two rotors rotate synchronously and towards each other inside the pump casing, but the gap they always maintain does not come into contact. The carefully designed protrusions and grooves on the rotor continuously change the spatial volume with the rotation of the rotor, thereby achieving the suction and compression of gas. During the rotation of the rotor, the gas is tightly sealed in the chamber formed by the rotor and pump casing. After compression, it is orderly discharged through the exhaust port, and this process continues to form a vacuum in the pump chamber.
Structural Features
1. Shell: usually made of cast iron or refined steel, it accommodates all key components inside the pump and provides a sturdy foundation for the normal operation of the pump.
2. Rotor: Composed of two coaxial and meshing rotors that rotate under the drive of a motor. The design of rotor profile is one of the key factors affecting the performance of Roots pumps, and common profiles include circular arc, involute, and cycloid.
3. Inlet and exhaust channels: responsible for the function of gas inlet and outlet.
4. Drive and driven components: including key components such as motors, shafts, couplings, gears, and sealing equipment.
5. Lubrication system: aimed at reducing friction and extending the service life of the pump. It is worth noting that Roots vacuum pumps do not require oil lubrication, simplifying the maintenance process.
3、 Performance characteristics
1. Sex: Roots vacuum pumps can maintain stable high pumping speed over a wide pressure range, making them particularly suitable for handling scenarios with low exhaust pressure.
2. Stability: With its unique design, Roots pumps can perform well in high vacuum environments, running smoothly and with low noise.
3. Wide applicability: Roots vacuum pumps are insensitive to dust and water vapor in the pumped gas and are suitable for various industrial fields.
4. No oil pollution: There is no need to use oil for sealing and lubrication in the pump chamber, reducing the pollution of oil vapor on the vacuum system.
4、 Application Fields
Roots vacuum pumps are widely used in vacuum feeding systems, especially in situations where materials need to be quickly and efficiently transported from one location to another. In addition, it is widely used in various fields such as chemical production, sewage treatment, food processing, electronic manufacturing, vacuum melting, laboratory equipment, etc.
5、 Selection and maintenance
1. Selection: When selecting, it is necessary to consider parameters such as the pumping rate, ultimate vacuum degree, and allowable pressure difference of the Roots vacuum pump, as well as factors such as the properties of the gas being pumped and the working environment.
2. Maintenance: In order to ensure the normal operation and extend the service life of Roots vacuum pumps, regular maintenance is required. This includes checking the oil level, cleaning the pump body, replacing seals, etc. At the same time, attention should be paid to preventing granular solids from entering the pump chamber to avoid damaging the equipment.
6、 Precautions
1. Installation environment: Roots vacuum pumps should be installed in a dry, well ventilated, and clean environment, and the working temperature should be maintained within a suitable range.
2. Start and Stop: When starting and stopping the Roots vacuum pump, it is necessary to follow the correct operating procedures to ensure the operation of the equipment.
3. Monitoring and adjustment: During operation, it is necessary to closely monitor the operating conditions of the Roots vacuum pump, such as motor load, pump body temperature, vibration, and noise. If any abnormal situation is found, the machine should be stopped in a timely manner for inspection and troubleshooting.
