ZJP 900A Roots Vacuum Pump: Industrial-Grade High-Capacity Oil-Free Vacuum Solution

The ZJP 900A Roots Vacuum Pump delivers exceptional performance with 900L/S pumping capacity and 7.5KW high-efficiency motor, making it a core component for industrial vacuum systems. Its oil-free design, low noise level of 84dB(A), and high compression ratio of 50:1 ensure outstanding performance in electronics, pharmaceutical, and food processing applications.

In-Depth Working Principle

1. Innovative Dual-Rotor Design

The ZJP 900A features precision-engineered figure-8 rotors with special hardened surface treatment, ensuring service life up to 30,000 hours. Two rotors counter-rotate synchronously through high-precision gears with 1:1 transmission ratio, maintaining clearance of 0.1-0.15mm for efficient frictionless operation.

2. Intelligent Pressure Differential Control

When inlet/outlet pressure difference exceeds 3000Pa, the patented bypass valve automatically opens to recirculate partial gas back to the inlet. This innovative design reduces energy consumption by 15% while protecting the motor from overload damage.

3. Modular System Configuration

The ZJP 900A can be flexibly combined with various backing pumps:

Rotary vane pump system: For conventional industrial applications

Screw pump system: Ideal for dust-containing gases

Liquid ring pump system: Excellent for condensable vapors

Six Core Advantages

Superior Pumping Performance: 900L/S pumping speed enables rapid vacuum establishment, significantly improving production efficiency. Field tests show reaching 10Pa in a 100m³ chamber takes only 18 minutes.

Excellent Energy Efficiency: 20% more energy-efficient than comparable products. The 7.5KW motor with optimized flow path design can save 30,000-50,000 RMB annually in operating costs.

Ultra-Quiet Operation: German technology silencer keeps operational noise at just 84dB, equivalent to normal conversation volume, improving workshop environment.

Smart Protection System: Equipped with dual pressure and temperature sensors that automatically alarm and shut down during abnormalities to prevent equipment damage.

Extended Service Life: Critical components use Swedish SKF bearings and Japanese MITSUBOSHI belts, with mean time between failures exceeding 25,000 hours.

Intelligent Remote Monitoring: Optional IoT module enables real-time operation monitoring and mobile APP data access.

Industry Application Cases

Case 1: Photovoltaic Coating Production Line

A leading PV manufacturer uses three ZJP 900A units in their vacuum system for silicon wafer coating. The system maintains stable pumping speed above 850L/S, improving coating uniformity by 15% and increasing annual capacity by 200MW.

Case 2: Lithium Battery Vacuum Drying

In lithium battery electrode drying processes, the ZJP 900A paired with screw pumps can reduce drying chamber pressure below 5Pa within 8 minutes, controlling moisture residue under 50ppm.

Case 3: Pharmaceutical Freeze-Drying System

A domestic biopharmaceutical company selected ZJP 900A for vaccine freeze-drying production. The oil-free characteristic fully complies with GMP requirements, achieving 99.8% batch consistency.

Expert Q&A Highlights

Q1: Does ZJP 900A require preheating?
Recommended to run idle for 10-15 minutes after first installation or prolonged shutdown. Daily operation requires no preheating and can start production immediately.

Q2: Maximum continuous operation time?
Designed for 24/7 continuous operation, but suggest 30-minute inspection breaks every 8 hours to extend equipment life.

Q3: How to handle corrosive gases?
Recommend 316L stainless steel special version with gas scrubber attachment, resistant to most acidic gases.

Q4: Routine maintenance points?

Monthly belt tension check

Quarterly intake filter replacement

Annual bearing grease replacement

Q5: How to address excessive vibration?
First check anchor bolt tightness, then verify rotor dynamic balance. Contact factory technicians if necessary.

Q6: High-altitude operation considerations?
Pumping speed decreases about 3% per 1000m altitude increase. Recommend selecting one size larger model.

Q7: Energy-saving modification options?
Can add variable frequency drive system to automatically adjust speed based on actual load, saving up to 30% energy.

Q8: How to determine rotor replacement need?
When pumping speed drops over 15% or noise increases significantly, consider checking rotor clearance.

Q9: Features of explosion-proof version?
Explosion-proof model uses ATEX-certified motor with overall ExdIIBT4 rating, suitable for flammable/explosive environments.

Q10: After-sales service policy?
1-year full machine warranty, lifetime technical support, 24-hour response, 72-hour on-site service.

Purchasing Guide

Determine process requirements: Select appropriate system configuration based on working pressure range and gas load.

Consider environmental factors: Choose special versions for high temperature, humidity, or corrosive environments.

Evaluate energy consumption: For long-term operation, prioritize models with high energy efficiency ratings.

After-sales service: Prefer brands with local service networks in your region.

Expansion capability: Consider future capacity increases and allow about 20% pumping speed margin.

Conclusion

The ZJP 900A Roots Vacuum Pump has become an industry benchmark with its exceptional performance and reliability. Whether for large-scale production lines or precision manufacturing processes, it delivers efficient vacuum solutions. We offer professional technical consultation and customized services - please contact our engineering team for more information.