What are the classifications of rotary blowers?
Release date:
2023-02-20
What are the classifications of rotary blowers? According to the pressure of rotary blowers, they can be classified into low-pressure rotary blowers, medium-pressure rotary blowers, and high-pressure rotary blowers. The pressure ranges are as follows: For low-pressure blowers, the total pressure H ≤ 1000 Pa.
Rotary blower What are the categories?
According to the pressure rating, rotary blowers can be classified into low-pressure rotary blowers, medium-pressure rotary blowers, and high-pressure rotary blowers. The pressure ranges are as follows: for low-pressure blowers, the total pressure H ≤ 1000 Pa; for medium-pressure blowers, 1000 Pa < H ≤ 3000 Pa; and for high-pressure (centrifugal) blowers, 3000 Pa < H ≥ 15000 Pa.
Rotary Blower Characteristics
1. Since the impeller operates within the valve body without friction or lubrication, there is no oil in the exhaust gas. It is an ideal pneumatic conveying air source for industries such as chemical and food processing.
2. The rotary blower is a positive-displacement rotary blower with a wide range of pressure options. Flow rate can be adjusted by selecting the appropriate speed.
3. The fan has a high rotational speed, and the clearances between rotors and between rotors and the housing are small, resulting in minimal leakage and high volumetric efficiency.
4. The fan rotor has been verified through both static and dynamic balancing. The finished product operates smoothly with minimal vibration.
Rotary blower Installation Notes
1. The area surrounding the rotary blower should be as spacious as possible to facilitate disassembly, assembly, and routine inspections. For outdoor installations, a rain shelter should be provided; for indoor installations, adequate ventilation must be maintained.
2. The concrete foundation for the unit shall comply with the requirements for equipment installation and machine foundations. When designing the foundation, users should fully consider the weight of the rotary blower and the foundation’s compressive strength. The foundation surface should be kept as level as possible, and sufficient预留 holes for anchor bolts should be provided.
3. Place the blower on the foundation, insert shims at appropriate locations between the unit’s base and the foundation surface to ensure even support for the unit. After the unit is leveled and aligned, perform a second grouting operation. Once the cement mortar has hardened, simultaneously and evenly tighten the anchor bolts and nuts.
4. Before installing the pipeline, thoroughly remove rust, welding slag, and other foreign objects from the pipeline to prevent them from entering the cylinder and causing a serious accident.
5. To ensure the long-term safe operation of the blower, an air filter or vacuum filter must be installed on the intake pipeline. To effectively reduce the blower’s noise, silencers should be installed as close as possible to the blower’s inlet and outlet, aligned with the calibrated airflow direction.
6. The flexible joint should be located close to the inlet and outlet ends of the blower. This not only compensates for installation errors in the piping but also reduces the transmission of vibration along the rigid piping during blower operation.
7. Based on the load conditions, install an exhaust bypass and a silencer on the exhaust pipe near the fan to facilitate no-load starting and unloaded shutdown of the fan.
8. The discharge side of the blower shall be equipped with a safety valve and a check valve, and the inlet side of the vacuum pump shall be equipped with a vacuum safety valve. Pressure gauges shall be installed on both the inlet and discharge sides of the blower, and a vacuum gauge shall be installed on the inlet side of the vacuum pump.
9. The pipeline should not have too many bends, and 90° right-angle bends should be avoided as much as possible. All pipelines must be provided with reliable supports to prevent the fan from bearing unfavorable additional loads.
10. The power supply should be equipped with a voltmeter and an ammeter.
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