Blower Air Fan

Product Introduction

The HL618 series screw blowers, developed by Shandong Zhanggu with years of design and manufacturing experience, are newly launched products designed to meet market demands for energy saving and environmental protection. Featuring a compact structure, elegant appearance, high efficiency, low noise, reliable performance, and long service life, this series is particularly suitable for applications requiring medium to small flow rates and high pressure. It serves as an ideal air source device widely applied in metallurgy, machinery, chemical engineering, mining, electric power, and other industrial fields.

Main Features:

1. Advanced rotor profile design effectively reduces fluid dynamic losses and improves host efficiency.

2. Excellent internal compression characteristics ensure low power consumption, saving up to 30% more energy compared to Roots blowers.

3. Air-cooling structure with no cooling water required for single-stage pressure up to 250 kPa.

4. Oil-free rotor chamber design guarantees clean air quality.

5. Low airflow pulsation ensures stable operation and reduced aerodynamic noise under high speed and high pressure.

6. Helical synchronous gear with keyless connection ensures reliable positioning and stable, safe operation across a wide speed range.

7. Rotor adopts a large shaft diameter design, providing higher stiffness and load-bearing capacity.

8. Locating end adopts a combination of four-point angular contact ball bearings and cylindrical roller bearings, ensuring sufficient load capacity and stability under extreme conditions, thus extending bearing service life.

9. Casing adopts a middle-connection structure for uniform force distribution, enhancing overall load-bearing capacity; reinforced rib design improves casing rigidity for reliable operation under high pressure.

10. Splash lubrication reduces oil-churning power loss and ensures stable oil supply for gears and bearings.

11. Unique gas seal design provides excellent sealing performance and long service life.

12. End cover features streamlined cooling fins to improve gearbox heat dissipation.

Component Features

1. Screw Airend:
Bearings adapt to continuously changing loads, providing high flexibility and efficiency to ensure smooth operation of the production process.

2. Air Filter
High-quality intake filter with superior filtration level, ensuring high process reliability, energy efficiency, and long service life, extending maintenance intervals.

3. Acoustic Enclosure
Noise is significantly reduced through sound-absorbing foam and metal panel reflection.
Lowers the cost of additional soundproofing equipment in blower rooms.
All equipment can be inspected by opening the acoustic enclosure.

4. Integrated Variable Speed Drive (VSD)
Electrical cabinet with fully integrated inverter – no additional engineering or installation required.
Specially selected drive components with precise parameter settings for higher efficiency.
Optimized component selection reduces installation cost.

5. Microcomputer Controller
Integrated blower control system.
Displays overall system performance status, provides proactive maintenance reminders, repair notifications, fault detection, and safety shutdown alerts.

6. Lubrication System
Advanced oil circuit system integrating oil pump, oil cooler, and filter.
Low oil temperature extends the service life of bearings and gears.

7. Inlet & Outlet Silencers
Fixed-position inlet and outlet connections for easy piping installation.
All grids equipped with lining to reduce noise.
Independent cooling airflow prevents recirculation.

8. Permanent Magnet Motor
High torque at low speed.
Exceeds IE3 motor energy efficiency standard.
Independent cooling fan ensures stable motor operation.

Intelligent Features: Equipped with smart PLC control, remote operation capabilities, and multiple communication options for convenient operational management.  

Low Noise: The screw rotor design minimizes aerodynamic noise and ensures smooth output, eliminating sudden internal air release. The wave-shaped inlet and exhaust ports further reduce airflow fluctuations, resulting in quieter operation compared to traditional blowers.  

Low Cost: The optimized structural design reduces wear and ensures long-lasting durability. The unit operates smoothly with minimal load and requires no special foundation, maximizing customer benefits.

Ensures Continuous Operation
In demanding and dusty environments, a reliable supply of compressed air is crucial to maintaining uninterrupted production. The BSG series oil-free screw blowers are designed, manufactured, and tested in compliance with GB/T 15487 standards. Their fully enclosed IP54-rated motors ensure continuous operation even in dusty and humid conditions, delivering superior reliability.

Protects Your Reputation and Production
In nearly all applications, oil contamination in compressed air can lead to serious production issues, resulting in increased costs. The BSG series oil-free screw blowers set a new standard for air purity, providing enhanced protection for critical applications and meeting today’s increasingly stringent air quality requirements.

Easy Installation
The BSG series oil-free screw blowers are ready for immediate use upon delivery. The comprehensive supply package eliminates the need for any additional customer procurement, significantly simplifying the installation process and saving time and costs. These blowers can be directly integrated into existing compressed air pipelines for instant startup and operation.

Application Areas