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Help Center2hb810h17 Positive and Negative Pressure High-pressure Blower: Dual Functions of Positive Pressure Blowing and Negative Pressure Suction (vacuum), Also Known as a High-pressure Blower for Both Blowing and Suction.
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Positive and negative pressure high-pressure blowers (vortex/side flow type): A single blower has both positive pressure blowing and negative pressure suction (vacuum) functions simultaneously, also known as a dual-purpose high-pressure blower for blowing and suction.
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 sucks 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 impellers, capable of long-term continuous operation.
Core parameters
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: 100% 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, and positive pressure blows for conveying.
• 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 aerates, and negative pressure sucks mud.
• Industrial automation: Adsorption and fixation, blowing for drying, waste recycling.
Points to note when purchasing
1. Determine the working conditions: Whether it is mainly negative pressure or positive pressure, and whether simultaneous blowing and suction are required.
2. Parameter matching: Select the model according to the flow rate, pressure/vacuum degree, and power, and leave a 10–20% margin.
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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