Dry Screw Vacuum Pump
Your Professional Dry Screw Vacuum Pump Supplier
Industrial dry screw vacuum pump solutions are engineered for manufacturing operations where oil-free performance, strict process gas compatibility, continuous duty cycles, and predictable maintenance schedules are critical operational requirements.
The product portfolio covers industrial dry screw vacuum pumps and integrated vacuum system configurations designed for environments involving aggressive chemical gases, condensable vapors, particulate loads, and rigorous production schedules. Depending on specific process demands, available configurations include optimized pumping speeds, ultimate vacuum levels, tailored cooling methods, motor specifications, auxiliary purge systems, and modular accessories.
Technical Specifications Overview
|
Technical Parameter |
Standard Industrial Series |
Heavy-Duty Chemical and Process Series |
|
Nominal Pumping Speed |
100 to 3000 m3/h |
100 to 3000 m3/h (Expandable via Roots boosters) |
|
Ultimate Pressure Limit |
Down to 10-2 to 10-3 mbar |
Down to 10-2 to 10-3 mbar |
|
Rotor Construction Material |
High-grade ductile iron with protective finish |
Specialized stainless steel or high-alloy options |
|
Casing and Chamber Treatment |
Modular cast iron with integrated cooling jacket |
Chemically resistant internal anti-corrosion treatments |
|
Cooling Configurations |
Integrated air cooling or direct water cooling |
Controlled closed-loop water cooling systems |
|
Motor Compliance |
IE3 / IE4 high-efficiency industrial motors |
Explosion-proof / ATEX certified motor options |
Why Choose Us
Proven Engineering and Manufacturing Expertise
Decades of specialized experience in industrial vacuum and compression technology, backed by precision machining, advanced rotor balancing equipment, and rigorous in-house quality testing protocols.
Comprehensive Quality Assurance
Every pump undergoes strict factory acceptance testing, including helium leak detection, vibration analysis, and performance verification under simulated load conditions.
Global Supply and Technical Support
Robust international logistics management, precise export compliance documentation, and responsive engineering support to ensure seamless integration into overseas industrial facilities.
Operating Characteristics
Zero Chamber Lubrication
No fluid in the compression zone, eliminating process contamination risks associated with oil-sealed systems.
Non-Contacting Rotors
Clearances between rotors and housing minimize mechanical wear during continuous operation.
Variable Pitch Design
Modern screw profiles utilize variable pitch geometry to optimize internal compression ratios and control operating temperatures.
Robust Thermal Management
Controlled jacket cooling prevents localized overheating during high gas loads.
Typical Industrial Applications
Semiconductor & Electronics
Vacuum chambers, thin-film deposition, etching support, and load-lock evacuation.
Lithium Battery Manufacturing
Electrode drying, solvent recovery, and moisture-sensitive material processing.
Chemical & Pharmaceutical Processing
Distillation, solvent evaporation, degassing, and reactor evacuation involving condensable vapors.
Freeze Drying (Lyophilization)
Sublimation moisture removal requiring high vapor-handling capability and corrosion-resistant internals.
Heat Treatment & Metallurgy
High-temperature industrial furnaces requiring reliable, long-cycle vacuum integrity.
Vacuum Coating Systems
PVD, CVD, and surface treatment setups utilizing multi-stage booster configurations.
During the operational cycle, process gas enters through the suction flange and is trapped in the volumes formed by the screw threads and the housing walls.
As the counter-rotating screws turn, the trapped gas volume is physically transported axially toward the discharge port. Internal compression occurs as the volume decreases along the screw length before the gas is expelled against atmospheric pressure.
Practical Engineering Advantages
Clean Chamber: Eliminates fluid degradation and eliminates regular oil-change downtime in the vacuum zone.
High Tolerance to Slugs: Capable of handling moderate liquid slugs or condensable loads when properly configured with gas ballast or thermal management.
Simplified Maintenance: Reduced consumable replacement compared to rotary vane or oil-sealed systems.
Performance is strictly governed by rotor metallurgy, thermal clearance design, sealing arrangement, and downstream exhaust backpressure.
Failure Modes & Prevention in Industrial Environments
Understanding potential failure risks ensures higher operational reliability:
Condensation & Liquid Ingress
Handled by maintaining correct high operating temperatures within the casing and utilizing gas purge systems.
Particulate Accumulation
Prevented by installing appropriate inlet particulate filters and selecting proper rotor clearances.
Corrosion & Coating Delamination
Mitigated by matching internal chemical-resistant coatings and specialized metallurgy directly to the specific gas matrix.
Maintenance & Serviceability
Dry screw vacuum pumps reduce maintenance downtime compared to oil-sealed alternatives, but require standard preventive care:
Gearbox Lubrication
Routine inspection and periodic replacement of timing gear lubrication oil.
Shaft Seal Purge
Monitoring purge gas regulators and flow rates to protect seal integrity.
Inlet & Exhaust Filtration
Regular inspection of upstream filters to prevent foreign object damage.
Manufacturing, Testing, and Quality Control Standards
High-Precision Rotor Machining: Screw rotors are machined on multi-axis CNC milling centers to maintain exact micro-clearances between interlocking profiles, preventing internal gas slippage while avoiding mechanical contact during thermal expansion.
Dynamic Rotor Balancing: All screw rotors undergo high-speed dynamic balancing to eliminate operational vibration, extend bearing life, and reduce noise levels during continuous industrial shifts.
Metallurgical Traceability: Raw materials for rotors, housings, and internal shafts are sourced from verified mills with complete material test reports ensuring resistance to mechanical stress and chemical degradation.
Factory Acceptance Testing (FAT): Every assembled pump is subjected to rigorous testing protocols prior to dispatch, including measurement of actual pumping speed, power consumption verification, helium leak testing for vacuum integrity, and thermal stability checks under load.
FAQ
With abundant experience, we are one of the most professional dry screw vacuum pump manufacturers and suppliers in China. Please feel free to buy customized dry screw vacuum pump made in China here from our factory. For quotation, contact us now.
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