DualBlowers Complete Product Model List

2HB 220 H26 0.7Kw

2HB 220 H26 0.7Kw
电机功率0.7 Kw
极限真空210 mBar
额定电压200-240△/345-415Y
额定电流3.8 A
Inquiry / unit
2HB 320 H26 0.85Kw

2HB 320 H26 0.85Kw
电机功率0.85 Kw
极限真空200 mBar
额定电压200-240△/345-415Y
额定电流2.4 A
Inquiry / unit
2HB 320 H36 1.3Kw

2HB 320 H36 1.3Kw
电机功率1.3 Kw
极限真空260 mBar
额定电压200-240△/345-415Y
额定电流3.3 A
Inquiry / unit
2HB 420 A31 1.5Kw

2HB 420 A31 1.5Kw
电机功率1.5 Kw
极限真空260 mBar
额定电压200-240V
额定电流9.0 A
Inquiry / unit
2HB 420 H36 1.6Kw

2HB 420 H36 1.6Kw
电机功率1.6 Kw
极限真空280 mBar
额定电压200-240△/345-415Y
额定电流4.3 A
Inquiry / unit
2HB 420 H46 2.2Kw

2HB 420 H46 2.2Kw
电机功率2.2 Kw
极限真空330 mBar
额定电压200-240△/345-415Y
额定电流4.4 A
Inquiry / unit
2HB 520 H46 3.0Kw

2HB 520 H46 3.0Kw
电机功率3.0 Kw
极限真空340 mBar
额定电压200-240△/345-415Y
额定电流7.2 A
Inquiry / unit
2HB 520 H57 4.0Kw

2HB 520 H57 4.0Kw
电机功率4.0 Kw
极限真空390 mBar
额定电压345-415△/600-720Y
额定电流5.8 A
Inquiry / unit
2HB 720 H16 2.2Kw

2HB 720 H16 2.2Kw
电机功率2.2 Kw
极限真空220 mBar
额定电压200-240△/345-415Y
额定电流5.6 A
Inquiry / unit
2HB 720 H26 3.0Kw

2HB 720 H26 3.0Kw
电机功率3.0 Kw
极限真空280 mBar
额定电压200-240△/345-415Y
额定电流5.6 A
Inquiry / unit
2HB 720 H37 4.3Kw

2HB 720 H37 4.3Kw
电机功率4.3 Kw
极限真空360 mBar
额定电压345-415△/600-720Y
额定电流5.2 A
Inquiry / unit
2HB 720 H47 5.5Kw

2HB 720 H47 5.5Kw
电机功率5.5 Kw
极限真空440 mBar
额定电压345-415△/600-720Y
额定电流7.7 A
Inquiry / unit

Common Working Condition Challenges of Two-stage High-Pressure Blowers

Insufficient Suction for High Negative Pressure Feeding

Long feeding distance for powders and pellets, many pipeline elbows, insufficient negative pressure of ordinary blowers, slow material suction, and easy pipe blockage.

High Pipeline Resistance, Actual Output Compromised

Selected only by air volume without calculating elbow and pipeline resistance, significant pressure attenuation after blower installation, and process effects fail to meet standards.

Air Source Contains Oil, Contaminating Materials and Workpieces

Ordinary air sources output airflow with oil mist, contaminating conveyed materials and processed workpieces, affecting quality and subsequent processes.

Difficult to Match Accessories, Limited Equipment Integration

Troublesome procurement of filters, pressure relief valves, and silencers; the complete machine is relatively large and difficult to embed inside automated complete equipment.

Core Advantages of Leynow Two-stage High-Pressure Blower

Dual-purpose Blowing and Suction in One Machine, Free Switching Between Positive and Negative Pressure

The same two-stage vortex air pump can perform negative pressure suction for feeding and adsorption, and also positive pressure high-pressure blowing for blow-drying and aeration; one machine covers two processes, reducing procurement and space occupation.

Oil-free Operation, Clean Output Airflow

No mechanical contact between the impeller and pump chamber, no lubricating oil required in the pump chamber, clean output airflow, suitable for occasions with air source cleanliness requirements such as food, printing, and electronics.

Two-stage Impeller, Higher Pressure Difference and Stronger Suction

Two-stage impeller series boosting, achieving higher pressure difference in the same volume; suitable for high negative pressure feeding, long pipeline conveying, and adsorption and material suction working conditions with many elbows and high resistance.

Industrial Motor, Capable of Long-term Continuous Operation

IP54 protected, Class F insulated motor, optimized heat dissipation duct; complete machine dynamic balance calibration, supporting long-term continuous operation under conditions of good ventilation and heat dissipation and matched working conditions.

Compact Structure, Convenient for Equipment Integration

Horizontal base design, compact body, can be directly embedded into automation equipment cabinets or inside complete machines, serving as a built-in negative/positive pressure air source unit.

Complete Accessories, Selection and Maintenance Support

Original factory accessories such as intake filters, pressure relief valves, and silencers can be supplied as a set; selection calculation based on air volume, pressure, and pipeline resistance, with troubleshooting and factory repair and maintenance provided.

Product Specifications & Parameters

Product Model Motor Power Ultimate Vacuum Rated Voltage Rated Flow Rated Current Industry Application

4HB 420 H26

 1.5 Kw 480 mBar 200-240△/345-415Y 4.3 A 87 m3/h 真空包装
Working Principle of Leynow Two-stage High-Pressure Blower

  • Leynow two-stage high-pressure blowers (vortex air pumps / side channel blowers) have impellers with numerous blades. When the impeller rotates at high speed, gas enters the annular side chamber under the action of centrifugal force, circulates and pressurizes between the blades and the side chamber, and is discharged from the outlet.

  • Two-stage means two-stage impeller series boosting; the gas undergoes two boosts, resulting in higher pressure difference; the air inlet forms negative pressure suction, and the air outlet forms positive pressure blowing, so one machine has both suction and blowing functions.

  • The impeller operates without contact with the pump chamber, no lubricating oil is required in the pump chamber, and the output airflow is clean; the complete machine has a simple structure and low daily maintenance, suitable for continuous operation of industrial equipment.

Technical Information & Materials

Compiled technical reference materials related to vacuum pumps for selection, equipment commissioning, and troubleshooting.

Project Selection Reference Suggestions
  • Confirm core indicators: required ultimate vacuum, actual pumping volume;
  • Clarify the extracted medium: water vapor, dust, corrosive gases, etc., to determine whether filtration, condensation, or explosion-proofing is needed;
  • Confirm the usage environment: indoor/outdoor, on ships, high temperature and humidity, dust environment;
  • Usage mode: intermittent use or long-term continuous operation;
  • Standalone equipment or a complete central vacuum station.

Applicable Industries and Typical Processes

Applicable Industries
Aquaculture Industry

Aquaculture Industry

Air supply aeration and oxygenation for fish ponds and shrimp ponds, increasing dissolved oxygen in water.

Woodworking CNC Machining Industry

Woodworking CNC Machining Industry

Vacuum adsorption clamping of panels, suction collection of sawdust and dust.

Printing and Packaging Industry

Printing and Packaging Industry

Printing paper adsorption and conveying, bag opening blowing at packaging stations.

Food Processing Industry

Food Processing Industry

Material blow-drying and water removal, vacuum adsorption, guaranteed clean air source.

Plastic Powder Conveying Industry

Plastic Powder Conveying Industry

Negative pressure feeding, suction, and conveying of plastic pellets and powders.

Complete Equipment Integration Industry

Complete Equipment Integration Industry

Embedded in complete equipment as a built-in negative/positive pressure air source unit.

Typical Processes
Aquaculture Pond Aeration and Oxygenation

Aquaculture Pond Aeration and Oxygenation

Continuous air supply aeration for fish ponds and shrimp ponds, improving dissolved oxygen in water.

Assembly Line Workpiece Blow-drying and Water Removal

Assembly Line Workpiece Blow-drying and Water Removal

High-pressure air knife blow-drying after workpiece cleaning, replacing manual wiping.

Powder and Pellet Vacuum Feeding

Powder and Pellet Vacuum Feeding

Automatic negative pressure feeding and conveying of plastic pellets and powders.

Workstation Dust Extraction and Suction Recovery

Workstation Dust Extraction and Suction Recovery

Negative pressure suction and collection of dust and debris, improving workshop environment.

Sewage Treatment Stirring and Aeration

Sewage Treatment Stirring and Aeration

Biochemical tank aeration and stirring, assisting sewage oxygenation treatment.

Built-in Air Source Unit for Automation Equipment

Built-in Air Source Unit for Automation Equipment

Embedded inside complete equipment to provide negative and positive pressure air sources.

  • Usage Limitations: Not suitable for extracting large amounts of dust, highly corrosive gases, or high-temperature gases; please install an intake filter at the front end for dusty working conditions; it is strictly prohibited to operate with the inlet or outlet blocked, otherwise it will cause internal overheating and damage the motor.

  • Selection Recommendations: For aeration, blow-drying, and ordinary adsorption, prioritize single-stage models; if there are many pipeline elbows and system resistance is relatively high, consider double-stage; for long pipelines and high resistance negative pressure working conditions, consider 4HB three-stage. Please include pipeline resistance in the calculation during selection, and it is recommended to reserve a 10-20% performance margin.

Customer FAQs

What is the difference between two-stage, single-stage, and three-stage high-pressure blowers? How to choose?

Single-stage has a one-stage impeller, large air volume and continuous airflow, suitable for aeration and oxygenation, blow-drying and water removal, and ordinary vacuum adsorption; double-stage has two-stage impellers in series boosting, higher pressure difference, suitable for working conditions such as vacuum feeding, high negative pressure adsorption, many pipeline elbows, and relatively high system resistance; the three-stage 4HB series has even higher pressure difference, used for long pipeline and high resistance negative pressure processes. Please include pipeline resistance in the calculation during selection, and it is recommended to reserve a 10-20% margin.

Can a single-stage high-pressure blower suck and blow at the same time?

Yes, the blower has independent air inlet and outlet ports, and can simultaneously perform negative pressure adsorption and positive pressure blowing; note that the inlet and outlet ports must not be directly short-circuited, otherwise it will cause overload and internal overheating.

How to choose the power of a two-stage model? Is 1.3Kw enough?

Power cannot be judged alone; it must be comprehensively judged based on the required air volume, pressure, pipeline length, and number of elbows. Small feeding, short-distance conveying, and low-resistance working conditions can consider 1.3-2.2Kw; medium feeding, longer pipelines, and more elbows can choose 3-5.5Kw; large long pipeline high-resistance working conditions can consider 7.5Kw. Tell us the working condition parameters, and we can assist in matching the model.

Can a two-stage high-pressure blower run continuously for a long time?

Leynow 2HB two-stage industrial models support long-term continuous operation under conditions of good ventilation and heat dissipation, matched working conditions, and unblocked inlet and outlet ports. For dusty working conditions, be sure to install a front-end intake filter and clean the filter element regularly to protect the impeller and motor.

What supporting accessories are needed for a two-stage high-pressure blower?

Common accessories include: intake filter (essential for dust prevention), pressure relief valve (overload protection), silencer (reducing operating noise); Leynow can supply the complete set, and can also provide adapter suggestions according to on-site interface dimensions.

Can you provide accessory supply and repair and maintenance?

Yes. Accessories such as filters, pressure relief valves, and silencers can be supplied separately; we also provide technical consultation, troubleshooting guidance, and factory repair and maintenance services to help equipment resume production as soon as possible.

Do you have any questions about vacuum pump systems and solutions?

Please fill in your requirements carefully, and we will contact you within 24 hours.

Products
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