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Help Center2hb940h37 Explosion-proof Positive and Negative Pressure High-pressure Fan: a Single Fan Has Both the Functions of Positive Pressure Blowing and Negative Pressure Suction (vacuum).
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Working principle
The core is high-speed rotation of the impeller + centrifugal force + eddy current pressurization:
• Negative pressure (suction): A low pressure is formed at the center of the impeller, and the air inlet continuously draws air, generating a vacuum of -40 to -700 mbar.
• 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.
• Key points: Oil-free, non-contact, single-stage/double-stage impeller, capable of long-term continuous operation.
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 housing, integrated direct drive, low noise
Main features
• Dual-purpose machine: Saves equipment, space, and reduces costs.
• Oil-free and clean: Oil-free, suitable for the food, pharmaceutical, and electronics industries.
• Low maintenance: No gears/pistons, only need to clean the filter.
• Flexible installation: Can be installed horizontally/vertically, suitable for complex working conditions.
Typical applications
• Vacuum feeding/conveying: Negative pressure sucks powder and particles, positive pressure blows and conveys.
• Packaging and printing: Negative pressure sucks paper/film, positive pressure cleans/seals.
• Environmental dust removal: Negative pressure collects dust, 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 consider 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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