Roots blower, also known as Roots blower, is a type of volumetric rotary blower. The following is a detailed introduction to Roots blower:
1、 Working principle
The working principle of Roots blower is to compress and transport gas through relative motion of two blade rotors in 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. The two rotors are not in contact with each other and sealed through tightly controlled gaps to ensure that the discharged gas is not contaminated by lubricating oil.
2、 Main purpose
1. Air purification: Roots blowers can be used for exhaust gas treatment and purification equipment, such as dust removal, exhaust gas treatment, and exhaust gas treatment in chemical processes. The airflow generated by the Roots blower can effectively send the gas inhaled by the exhaust gas treatment equipment to the purification equipment for treatment, and then discharge the purified gas.
2. Wastewater treatment: In the wastewater treatment process, Roots blowers can be used as aeration devices to transfer oxygen to the wastewater in aeration tanks or activated sludge process processors, promoting microbial growth and dissolved oxygen concentration in the wastewater, thereby accelerating its degradation.
3. Material transportation and processing: The airflow generated by Roots blowers can be used in processes such as material transportation, mixing, or drying to improve production efficiency and ensure product quality. It can also be used in processing equipment for industries such as food and chemical, such as mixing, conveying, or unloading.
4. Other applications: Roots blowers can also be used for air supply, ventilation, and exhaust emissions in combustion equipment. In cement production, it can be used as a combustion supporting fan; In thermal power plants, it can be used for pneumatic ash conveying; In the chemical industry, it can be used to drive chemical changes; In addition, it can also be used in scenarios such as vacuum cleaning and incinerator air supply.
3、 Performance characteristics
1. Compact structure: Roots blower has a compact design, small footprint, and is easy to install and maintain.
2. Smooth operation: Due to the use of a three bladed rotor structure and a reasonable structure at the inlet and outlet of the casing, the Roots blower has low vibration and noise.
3. Wide applicability: Roots blower is suitable for gas transportation and pressurization systems in low-pressure environments, and can also be used as a vacuum pump.
4. Flexible adjustment: The air volume and pressure of the Roots blower can be flexibly adjusted by adjusting the speed or pipeline network to meet different production needs.
4、 Usage and maintenance
1. Usage requirements: The inlet medium temperature of the Roots blower must not exceed the specified value (usually below 40 ℃), and the particle impurity content and size must also meet the requirements.
2. Preparation before starting: Before starting the Roots blower, it is necessary to ensure that all preparations are ready, such as opening the intake, exhaust, and bypass control valves, checking whether the air filter is unobstructed, whether the lubricating oil is in good condition, and whether the impeller operates flexibly.
3. Operation monitoring: After the Roots blower is running normally, the operator should continuously monitor the operation status of various components, including machine temperature, vibration, and muffler noise. Once an abnormality is detected, the machine should be stopped immediately for inspection.
4. Regular maintenance: To ensure the normal operation and extend the service life of the Roots blower, regular maintenance is required, such as checking the status of inlet and outlet valves and bypass pipes, adjusting rotor gaps, replacing sealing devices and filters, etc.
In summary, Roots blowers have multiple uses and wide applicability in industrial production. Understanding its working principle, performance characteristics, and usage requirements is of great significance for the correct selection and use of Roots blowers.
