Operating conditions of roots blower: why does roots blower produce hot air?

Structure introduction of Roots blower:

Due to the adoption of three blade rotor structure, reasonable shell and the structure of inner air inlet, the blower has low vibration and noise.
The impeller and shaft are of integral structure. The impeller is not worn. The blower can last for a long time and work continuously for a long time.
The blower has high volume utilization rate, high volume efficiency, compact structure and flexible installation method.
A variety of models can meet the needs of various users.

Operating conditions of Roots blower:
1. Generally, the inlet air temperature of the conveying medium shall not exceed 40.
2. The content of particles in the medium shall not exceed 100mg/m3, and the maximum size of particles shall not exceed half of the minimum working interval.
3. The working bearing temperature shall not exceed 95, and the lubricating oil temperature shall not exceed 65.
4. The operating pressure shall not be higher than the range specified on the nameplate.
5. Roots blower impeller and housing, impeller and side plate, impeller and impeller clearance are reassembled after factory adjustment. Ensure this interval.
6. Roots blower operation, main oil tank and auxiliary oil tank must be between the two red lines of the oil level gauge.
7. Ensure that the inlet and outlet connections do not forget the tightening point, and whether the supporting points of the pipeline are complete. Cooling water required
The blower and vacuum pump shall ensure consistent installation of cooling water,
Meet the requirements.

What will hot air appear on Roots blower?
Roots blower is mandatory gas transportation equipment. Because of the forced transportation, the air will be compressed. The process of applying pressure to reduce the air will release a lot of energy. Energy is heat. Different types of blowers have different degrees of temperature rise, so the pressure will increase and the temperature will be high. However, the compression ratio will affect the normal temperature rise by about 20 degrees Celsius. Why does the temperature rise actually exceed 20 degrees Celsius. First of all, the fan may have some obstacles, such as machine friction, mechanical friction, which will release a certain amount of heat. If the exhaust temperature rises further, it may exceed 110 degrees in serious cases.
Secondly, the pipeline is blocked, which leads to overpressure. Increase heat release, overpressure is a more dangerous fault, and the fan motor is easy to burn out, which is also an influencing factor for the temperature rise of Roots blower.
Finally, the influence of inlet air temperature, the inlet air temperature of ordinary fan
The temperature shall not exceed 40 ℃. The transportation medium is air. In this case, if the cooling is not smooth, the inlet air temperature may exceed 40 ℃, and the temperature at the fan outlet will rise.
Excessive temperature will affect the spare parts of the fan. For example, seal, bearing, water tank lubricating oil temperature, etc. may cause blower failure. Therefore, in the daily patrol work, the fan temperature is also the test content. The fan temperature monitoring every day ensures that the fan temperature does not exceed a certain range, so that the roots blower can be used for a long time.