Gas conveying Roots blower is a common gas pressurization device, and the following is a detailed introduction to it:
1、 Working principle
The gas delivery Roots blower belongs to the positive displacement blower, and its working principle is to compress and deliver gas through the relative motion of two blade rotors (usually designed in a three blade shape) in the cylinder. These two rotors are driven by a pair of synchronous gears and rotate in opposite directions, smoothly pushing the inhaled gas from the intake port to the exhaust port. During the rotation of the rotor, each concave curved surface on the rotor forms a working volume with the inner wall of the cylinder, carrying away gas from the intake port. At the moment when it is connected to the exhaust port near the exhaust port, due to the reflux of high-pressure gas, the pressure in the working volume suddenly increases, thereby transporting the gas to the exhaust channel. Due to the presence of gaps between rotors and between rotors and cylinders, they do not come into contact with each other, ensuring smooth gas delivery and avoiding contamination by lubricating oil.
2、 Main features
1. Simple structure: Roots blower has a compact structure, is easy to manufacture, and is easy to install and maintain.
2. This device has high work efficiency and reliable operation.
3. Wide air volume range: Roots blower has a high air volume range and stable conveying gas pressure, which can be adjusted and controlled according to different process requirements.
4. Oil free lubrication: Roots blowers do not require lubricating oil during operation and are suitable for applications with high air quality requirements.
5. Low noise: The three leaf design significantly reduces gas pulsation, vibration, and noise, with minimal impact on the working environment.
6. Long service life: Roots blower has strong durability, long service life, and easy maintenance.
3、 Application Fields
Gas conveying Roots blowers are widely used in various fields of industrial production, including but not limited to:
1. Water treatment: provides the necessary oxygen for biochemical reactions and promotes the oxidative decomposition of microorganisms.
2. Desulfurization oxidation: Provide sufficient oxygen during the desulfurization oxidation process to ensure the progress of the chemical process.
3. Dust material transportation: Although Roots blowers themselves cannot transport gases containing media, they are very suitable for transporting clean air and dust materials.
4. Aquaculture: By installing an aeration disc at the bottom of the feeding pool and connecting it to a Roots blower, oxygen is continuously supplied to the pool to increase the oxygen content in the water, promote water purification, and promote the healthy growth of fish, shrimp, and other aquaculture products.
4、 Usage and maintenance
Usage requirements:
1. The temperature of the intake medium transported shall not exceed 40 ℃.
2. The particle impurity content in the medium should not exceed 1000mg/m3, and the particle size should be below 0.1mm.
3. When using boost, the rated boost value specified on the blower nameplate must not be exceeded.
Preparation before startup:
1. Open the intake control valve, exhaust control valve, and bypass pipe.
2. Check if the air filter at the inlet is unobstructed and if the inlet of the filter is open.
3. Check whether the pipes, valves, mufflers, and air filter supports are stable.
4. Check whether the lubricating oil is in good condition, whether the model is suitable, and whether the depth of the lubricating oil layer should reach 3-5 centimeters above the specified oil line; Check if the cooling water system is unobstructed.
5. Move the coupling and check if the impeller is moving smoothly and if there is any friction or collision.
6. Check if the connections of each part are good and if there is any looseness.
7. Surrounding debris, keep there no debris within two meters of the fan.
8. Check if the electrical components and voltage reducing starting equipment are intact.
Start and Run:
1. Before starting the Roots blower, it should run empty for 20-30 minutes and observe whether there are any abnormal phenomena in the blower.
2. After the empty machine runs normally, the load can be turned on.
3. After the fan is running normally, gradually adjust the outlet valve (or gradually close the vent valve) and gradually load it to the rated pressure, but do not overload it.
Shutdown and maintenance:
1. Before shutting down, the outlet valve should be gradually closed to allow the fan to run in an unloaded state for a period of time before shutting down.
2. Regularly clean and inspect the fan, and replace worn parts in a timely manner.
3. Regularly replace and replenish the lubricating oil of the fan to ensure that all components receive good lubrication.
In summary, gas conveying Roots blowers have the characteristics of simple structure, wide air volume range, oil-free lubrication, low noise, and long service life, and are widely used in multiple industrial fields. During use, strict adherence to usage requirements and maintenance standards should be followed to ensure the normal operation of the equipment and extend its service life.
