Understanding the Strengths and Weaknesses of Rotary Vane Vacuum Pumps

Rotary vane vacuum pumps have gained immense popularity in various industries today. To enhance product competitiveness, it is essential to identify and comprehend both the strengths and weaknesses inherent to these devices.

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These vacuum pumps come equipped with a suction port that features a coarse filter to prevent solid debris from entering the pump chamber. An efficient oil separator ensures the effective separation of oil and gas during exhaust. A built-in suction valve isolates the pump from the system when inactive, preventing oil from flowing back. Moreover, the pump operates using air-cooling technology.

Drawbacks of Rotary Vane Vacuum Pumps

1. Generally, the operational efficiency is relatively low, typically around 30%, with the best achieving up to 50%.
2. The vacuum degree is limited, primarily due to structural design constraints and the saturation vapor pressure of the working fluid.
3. Utilizing water as a working fluid allows for a limiting pressure of approximately ~ pa. With oil, it can reach up to 130 pa.

Advantages of Rotary Vane Vacuum Pumps

1. The gas compression process in rotary vane vacuum pumps is isothermal, allowing for the handling of flammable and explosive gases. With no exhaust valves and friction surfaces, they can manage gases that contain dust and non-condensable mixtures. Despite their lower efficiency, their unique features make them prevalent in many applications.
2. Extraction rates range from 0.43 to 560 m3/min.
3. Minimum suction pressure can vary from 33 to 160 hPa.
4. Operating temperature typically ranges between -10°C and 40°C.
5. Power requirements support between 7.5 and 560 kW.
6. Common materials for over-current components include cast iron and stainless steel.

Applications of Rotary Vane Vacuum Pumps

Acting as a type of mechanical, oil-sealed vacuum pump, rotary vane vacuum pumps serve as fundamental equipment for achieving vacuum conditions in various technology fields. They can extract dry gases from sealed containers and, with additional devices, can accommodate limited amounts of non-condensable gases. However, they are not suited for environments with excessive oxygen or corrosive materials, nor should they handle particle-laden gases.

1. Ideal for closed vacuum systems such as vacuum packaging, vacuum forming, and vacuum extraction.
2. Working inlet pressure ranges from 100 Pa, with pressures that exceed this threshold resulting in oil mist emissions.
3. Not designed to pump water or other liquids, nor should they handle flammable, explosive, high-oxygen, or corrosive gases.
4. Standard motors provided may not be explosion-proof; thus, specialized motors for unique conditions must meet industry standards.

Visual Representation of Rotary Vane Vacuum Pumps:

Specifications:

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Model | Pump Speed (m3/h) | Motor Power (KW) | Inlet Diameter (inch) | Rotary Speed (rpm) | Oil Capacity (L) | Weight (kg) | Noise (dB A) | Dimensions (mm)

50HZ | 60HZ

SV-010 | 10 | 12 | 0.37 (3ph), 0.55 (1ph) | G1/2 | 0.5 | 20 | 64 | 405*253*210

SV-020 | 20 | 24 | 0.75 (3ph), 0.90 (1ph) | G1/2 | 0.5 | 20 | 64 | 405*253*210

SV-025 | 25 | 30 | 0.75 (3ph), 0.90 (1ph) | G1/2 | 0.5 | 22 | 64 | 405*253*210

SV-040 | 40 | 48 | 1.5 (3ph),2.2 (1ph) | G11/4 | 1.0 | 50 | 67 | 660*300*270

SV-063 | 63 | 75 | 2.2 | G11/4 | 2.0 | 83 | 68 | 695*420*295

SV-100 | 100 | 120 | 3.0 | G11/4 | 2.0 | 87 | 72 | 735*420*295

SV-160 | 160 | 192 | 4.0 | G2 | 4.5 | 152 | 74 | 805*520*410

SV-200 | 200 | 240 | 5.5 | G2 | 4.5 | 159 | 76 | 825*520*410

SV-250 | 250 | 300 | 7.5 | G2 | 7.0 | 230 | 76 | 550*410

SV-300 | 300 | 360 | 7.5 | G2 | 7.0 | 236 | 76 | 550*410

SV-630 | 630 | 750 | 15.0 | DN100 | 960 | 35 | 620 | 75 | 980

SV-750 | 750 | 900 | 18.5 | DN100 | 35 | 640 | 76 | 980

Installation Dimensions:

Applications:

Utilized in vacuum packaging, drying, distillation, concentration, loading and unloading, suction, and vacuum forming, among others.

Our company also offers two additional models of rotary vane vacuum pumps: the 2XZ Direct Drive Rotary Vane Vacuum Pump and the 2x-a Rotary Vane Vacuum Pump.

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