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Help CenterPositive and Negative Pressure High-pressure Fan: a Single Fan Has Both Positive Pressure Blowing and Negative Pressure Suction (vacuum) Dual Functions, Also Known as a High-pressure Blower for Both Blowing and Suction
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Working principle:
The core is high-speed rotation of the impeller + centrifugal force + eddy current supercharging:
1. Negative pressure (suction): A low pressure is formed at the center of the impeller, and the air inlet continuously sucks air, generating a vacuum of -40 to -700 mbar.
2. Positive pressure (blowing): The gas is repeatedly accelerated in the annular cavity, and the air outlet outputs a high-pressure air flow of +40 to +800 mbar.
3. Key points: Oil-free, non-contact, single-stage/double-stage impellers, which can operate continuously for a long time.
Core parameters (common):
Power: 0.2–25 kW
Flow rate: 25–2500 m³/h
Positive pressure: ≤800 mbar (80 kPa)
Negative pressure: ≤-700 mbar (-70 kPa)
Structure: Aluminum alloy shell, integrated direct drive, low noise
Main features:
One machine for two purposes: Save equipment, save space, and reduce costs.
Oil-free and clean: 100% oil-free, suitable for the food, pharmaceutical, and electronics industries.
Low maintenance: No gears/pistons, only need to clean the filter screen.
Flexible installation: Can be horizontal/vertical, suitable for complex working conditions.
Typical applications:
Vacuum feeding/conveying: Negative pressure sucks powder particles, and positive pressure blows and conveys.
Packaging and printing: Negative pressure sucks paper/film, and positive pressure cleans/seals.
Environmental dust removal: Negative pressure collects dust, and positive pressure back blows the filter bag.
Water treatment: Positive pressure aeration, negative pressure sucks mud.
Industrial automation: Adsorption and fixation, blowing and drying, waste recycling.
Points to note when purchasing
1. Determine the working conditions: Whether it is mainly negative pressure or positive pressure, and whether it is necessary to blow and suck at the same time.
2. Parameter matching: Select the model according to the flow rate, pressure/vacuum degree, and power, and leave a margin of 10–20%.
3. Medium and environment: Ordinary air/dust/water vapor; normal temperature/high temperature (≤120℃), whether it is explosion-proof.
4. Installation space: Dimensions, directions of the air inlet and outlet, noise requirements (≤65 dB).
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