Roots blowers have a wide range of applications in the chemical industry. The following is a detailed introduction to Roots blowers in the chemical industry:
1、 Definition and Working Principle
Roots blower, also known as Roots blower, is a type of volumetric rotary blower. Its working principle is to compress and transport gas through relative motion of two blade rotors (usually three or two blades) inside the cylinder. The synchronous gear at the rotor shaft end ensures that the two rotors remain in mesh, while the concave surface on the rotor and the inner wall of the cylinder together form the working volume. During the rotation of the rotor, when the gas brought in from the suction port moves to the vicinity of the exhaust port, the pressure in the working volume suddenly increases due to the reflux of high-pressure gas, and then the gas is transported to the exhaust channel.
2、 Characteristics and advantages
1. Simple and compact structure: Roots blower consists of a casing, wall panels, impeller, oil tank, muffler and other parts, with a relatively simple structure and easy manufacturing.
2. Reliable operation: The Roots blower operates smoothly without pulsation, and does not require internal lubrication, thus ensuring high operational reliability.
3. Low noise: Due to the use of a three blade rotor structure and a reasonable structure at the inlet and outlet of the casing, the Roots blower has low vibration and noise.
4. High efficiency: Roots blower has a high volume utilization rate and high volume efficiency, which can meet the high requirements of gas transportation and pressurization in the chemical industry.
5. Easy maintenance: The Roots blower has a simple structure and components that are easy to disassemble and replace, making maintenance relatively convenient.
3、 Application scenarios
In the field of chemical engineering, Roots blowers have a wide range of application scenarios, including but not limited to:
1. Gas transportation and pressurization: Roots blower can transport and pressurize gases such as hydrogen, nitrogen, chlorine, etc., meeting the requirements of chemical production processes.
2. Vacuum packaging: In the packaging process of some chemical products, Roots blowers can be used in conjunction with vacuum systems to extract air from the packaging container, create a vacuum environment, and then fill it with protective gas to extend the shelf life of the product.
3. Stirring and mixing: The airflow generated by a Roots blower is used to stir and mix chemical materials, improving reaction efficiency and product quality.
4、 Selection and Precautions
When selecting, it is necessary to consider the performance parameters of the chemical Roots blower, mainly including speed, pressure, flow rate, shaft power, and exhaust temperature. Meanwhile, the following points should also be noted:
1. The temperature of the intake medium shall not exceed the upper limit specified by the Roots blower (usually 40 ℃).
2. The content and size of particles in the medium should meet the requirements of the Roots blower to avoid blockage and wear.
3. The bearing temperature during operation shall not exceed the specified value to ensure the operation of the fan.
4. The pressure used should not exceed the pressure range specified on the nameplate to avoid overload operation.
5、 Maintenance and upkeep
To ensure the normal operation and extend the service life of the chemical Roots blower, regular maintenance and upkeep are necessary. Specifically, it includes:
1. Regularly check the status of inlet and outlet valves and bypass pipes to ensure they are in good working condition.
2. Regularly inspect and replace lubricating oil to maintain good lubrication of bearings and gears.
3. Regularly check the rotor gap and sealing device, and replace them promptly if there is wear or damage.
4. Regularly clean the filter to prevent blockages from affecting airflow output.
5. Regularly conduct overall inspections and maintenance of the fan, promptly identify and address potential issues.
In summary, chemical Roots blowers have a wide range of application prospects in the chemical industry due to their simple structure, reliable operation, low noise, high efficiency, and easy maintenance. In the process of selection and use, reasonable selection and configuration should be made according to actual needs to ensure the normal operation of the fan and meet production needs.
