Many people don't know much about the use effect of Roots Blower Petroleum in the chemical industry. Today, I will take you to know.
Reasons for noise of Roots blower in chemical industry:
1. Noise source of Roots blower
Roots blower contains a variety of noise sources, and its radiation noise mainly includes: aerodynamic noise radiated from the air inlet and outlet; Mechanical noise radiated by shell, motor and bearing; Solid sound radiated by vibration. Among these local noises, the aerodynamic noise radiated from the inlet and outlet parts (referred to as aerodynamic noise for short) is the strongest. Others such as mechanical noise and electromagnetic noise are unnecessary under the premise of normal operation of the fan. According to the spectrum analysis of noise generated by Roots blower, it is characterized by low-frequency broadband. The aerodynamic noise of fan mainly consists of two parts: torsional noise and vortex noise.
Noise treatment method of Roots blower for chemical industry:
The noise control method is to prevent and reduce the noise radiation generated by the noise source, that is, try to reduce the impulse force. The noise control method adopted above not only increases the investment, but also generates energy loss due to the pressure loss from the silencer during the operation of the fan, which is very unfavorable for energy conservation. Therefore, the most basic way is to improve the aerodynamic fan design, the best fan selection, appropriate devices and operation methods to reduce the noise of Roots blower.
The limiting method is to improve the assembly precision; Replace the old ball bearing or sliding bearing to keep the rotor in dynamic balance; Connect motor and fan with elastic coupling; In order to improve the maintenance and protection of equipment, in addition to smoothing oil, tighten bolts, replace damaged parts, etc. Noise silencer of Roots blower for chemical industry. Under normal conditions, the aerodynamic noise radiated from the air inlet and exhaust port is 10-20 dB higher than that emitted by other components. Therefore, when controlling the fan noise, appropriate silencers must be installed in the intake pipe and exhaust pipe, and silencers must be used in Roots blower. The current national trend is to use resistive silencers with larger volume and narrower silencing channels. Silencers are rarely used. Of course, the selection, design and installation of silencers should be based on the actual situation.
The chemical industry uses the sound proof cover of Roots blower to enclose the whole Roots blower unit with a closed sound proof cover. The key of its skill is how to use cooling methods to ensure the normal operation of the fan.
There are many roots blowers in the chemical industry, which are widely used according to different working conditions, such as conveying chemical raw materials, conveying reaction gas, aeration mixing, sewage treatment, ventilation and exhaust, gas pressurization, pulse dedusting, and so on.
As a rotary machine, it has no reciprocating mechanism, no air valve, less wear parts and long service life. There are gaps between the impeller and the impeller, between the impeller and the shell, and between the wallboard, which do not need oil lubrication, ensuring that the gas to be transported does not contain oil, and does not need auxiliary equipment.
Routine maintenance of roots blower for chemical industry:
1. Keep the machine surface and surrounding environment clean, free of ash and oil dirt, and always check the tightness of connecting bolts;
2. Always check the bearing temperature to detect overheating, and the maximum allowable temperature and temperature rise of fan bearing and gearbox;
3. Check the gear box and gear mark of the gear box. The lubricating oil should be added to the specified scale line, not too much or too little. Check the oil seal device frequently for water and air leakage;
5. Check whether the lubricating system of the machine is normal, correctly select the lubricating grease (oil) to be added, and regularly add or replace the lubricating oil according to the specified cycle of the lubricating system;
6. Roots blower with gear oil pump must check the operation status of the oil pump and whether the oil circuit is blocked.
I believe that after reading the above content, you should also understand the use effect of Roots blower in the chemical industry. I hope it will be helpful to you.
Text term label: Roots blower
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