Overview
| brand | Southerly wind | power | 11kW |
| current | 22A | specifications | NF-80 |
| type | Belt driven | purpose | Environmental friendly sewage aeration, electroplating equipment line aeration and oxygenation |
| frequency | 50Hz | speed | one thousand and five hundred |
| size | three | Air volume | six point four one |
| material quality | HT-250 | voltage | 380V |
| weight | 380kg | noise | 85dB |
| wind pressure | 50kPa | Motor brand | Siemens/Wannan Motor |
| Warranty | 18 months | advantage | High wind pressure, low energy consumption, low noise, easy maintenance |
Product Details
Roots blower [1] is a volumetric fan, with impeller end face and front and rear end covers of the fan. The principle is a rotary compressor that uses two blade shaped rotors to move relative in the cylinder to compress and transport gas. This type of blower has a simple structure and is easy to manufacture. It is widely used in aquaculture oxygenation, sewage treatment aeration, cement conveying, and is more suitable for gas conveying and pressurization systems in low pressure situations. It can also be used as a vacuum pump, etc.
- Chinese name
- Roots blower [2]
- Foreign name
- Roots blower
- Type
- Positive displacement fan
- Application scope
- Petrochemical, building materials, electricity, smelting, fertilizers, etc
- structural style
- Three blade rotor, two blade rotor
- Pressure
- 9.8-196kpa
- Air volume
- 0.6-824.6 cubic meters per minute
catalogue
- oneIntroduction
- ▪ Composition
- ▪ Principle
- ▪ Characteristics
- ▪ Operating conditions
- twoClassification
- threeInstallation and debugging
- ▪ Installation
- ▪ Debugging
- fourOperational inspection
- fiveOperation
- sixFault handling
- sevenPreventive maintenance
- eightEnergy conservation and consumption reduction
- ▪ Energy saving
- ▪ Consumption reduction
brief introduction
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The Roots blower is composed of five main parts: casing, wall panel, impeller, oil tank, and muffler.
Wall panel: mainly used to connect the casing and impeller, support the rotation of the impeller, and achieve the effect of end face sealing.
Impeller: It is the rotating part of a Roots blower, divided into two blades and three blades. However, due to the advantages of three blades, such as smaller outlet pulsation, lower noise, and smoother operation, it has gradually replaced the two blade Roots blower.
Oil tank: mainly used to store lubricating oil for lubricating gears and bearings.
Silencer: used to reduce the noise generated by airflow pulsation during the inlet and outlet of Roots blower.
principle
Roots blower is a type of volumetric fan. There are two three blade impellers that rotate relatively in the space sealed by the casing and wallboard. Since each impeller is involute, or the envelope of Epicycloid, the three blades of each impeller are identical, and the two impellers are identical, which greatly reduces the processing difficulty. Numerical control equipment is used for impeller processing, which ensures that no matter where the two impellers rotate, a certain minimum clearance can be maintained when the Centre-to-centre distance between the two impellers is constant, so as to ensure that the gas leakage is within the allowable range.
The two impellers rotate in opposite directions. Due to the extremely small gap between the impeller and the impeller, between the impeller and the casing, and between the impeller and the wall panel, a vacuum is formed at the intake port. Air enters the intake chamber under the action of atmospheric pressure, and then two blades of each impeller form a sealing chamber with the wall panel and the casing. During the rotation of the impeller, the air in the intake chamber is continuously carried to the exhaust chamber by the sealing chamber formed by the two blades, Because the impellers in the exhaust chamber mesh with each other, the air between the two blades is squeezed out. This continuous operation continuously transports air from the inlet to the outlet, which is the entire working process of the Roots blower.
characteristic
Due to the use of a three blade rotor structure and a reasonable structure at the inlet and outlet of the casing, the fan has low vibration and low noise.
The impeller and shaft are of an integral structure and have no wear on the impeller. The performance of the fan remains unchanged and can operate continuously for a long time.
The fan has large volume utilization rate, high Volumetric efficiency, compact structure and flexible installation mode.
The models are complete and can meet the needs of different users for different purposes.
Operating conditions
1. The inlet temperature of the conveying medium should usually 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 gap.
3. The bearing temperature during operation shall not exceed 95 ℃, and the lubricating oil temperature shall not exceed 65 ℃.
4. The operating pressure should not exceed the pressure range specified on the nameplate.
5. The clearance between the impeller and the casing, between the impeller and the side plate, and between the impeller and the impeller of the Roots blower has been adjusted before leaving the factory. When reassembling, it is necessary to ensure this clearance.
6. When roots blower is running, the oil level of main oil tank and Drop tank must be between the two red lines of oil level gauge.
7. Check if there are any forgotten fastening parts at the inlet and outlet connections, and if the supporting parts of the piping are complete. For blowers and vacuum pumps that require cooling water, it is necessary to check whether the installation of cooling water meets the requirements.
Trading Area
Global