Introducing the trailblazing Low-Pressure Twin-Stage Compression Permanent Magnet Variable Frequency Electric Drive Screw Compressor, exclusively from Sanzhi (Henan) Compressor Co., Ltd.! This meticulously crafted marvel is designed to exceed expectations in the most challenging industrial environments, setting an unrivaled benchmark for value and performance excellence. Immerse yourself in a diverse array of power configurations, ranging from 37KW, 45KW, 55KW, 75KW, 90KW, 110KW, 132KW, 160KW, 185KW, 200KW, to 250KW, each promising an extraordinary balance of energy efficiency and steadfast reliability. Choose our top-tier compressor to unlock unparalleled quality at a remarkably competitive price, ensuring your industrial operations run smoothly and efficiently.
Meticulously Crafted Internal Structure - Frontside
Intricately Designed Internal Structure - Backside
Advanced Working Principle
In the intricate realm of air compression, the dream scenario is achieving a power requirement for single-stage transmission that perfectly aligns with the collective power of multi-stage compression. However, in practice, elements like coupling power losses, bearing friction, and the cooling dynamics of liquid viscosity bring about inefficiencies. By astutely optimizing and reducing the compression ratio at each stage, these inefficiencies are significantly diminished, ultimately leading to a system where the multi-stage compression showcases enhanced efficiency and demands a lower total power compared to its single-stage counterpart.
Introducing our cutting-edge two-stage screw air compressor, which prides itself on a revolutionary dual-stage rotary screw mechanism. Each sophisticated stage is comprised of both an active and a passive screw. The active screw, energized by an external drive, seamlessly drives the passive screw. The initial stage is designed with a low-pressure screw assembly, while the subsequent stage is engineered with a high-pressure screw group. Each screw is enveloped by a precision-sealed air film, guaranteeing peak compression performance. As these screws rotate, they skillfully manage the gas flow through three critical phases: suction, pressurization, and discharge.
First Stage Compression: At the outset, the gas undergoes compression by the low-pressure screw assembly. The gas is drawn into the screw compression chamber via the suction valve and progressively compressed, propelled by the rapid rotation of high-speed screw rotors. This meticulous process guides the gas towards the secondary compression stage, enhancing overall efficiency.
Second Stage Compression: During this crucial phase, the gas is compressed within a more restricted screw space, resulting in elevated temperatures and pressures. This stage concludes when the exhaust valve opens, proficiently releasing the high-pressure gas from the system, marking the end of the compression cycle.
Pure, natural air, meticulously cleansed via an air filter, enters the initial compression stage, where it blends with a minute quantity of lubricating oil within the compression chamber. Here, it is compressed to an intermediate pressure. As the compressed air navigates through the cooling channel, it encounters a substantial oil mist, significantly reducing its temperature. This cooled, compressed air then proceeds to the second stage rotor for further compression, reaching the ultimate exhaust pressure. Finally, it is expelled through the exhaust valve, completing the remarkably efficient compression process.
1) Superior Efficiency of PM Motor:Our state-of-the-art permanent magnet motor is expertly designed to deliver outstanding performance. Harnessing a wide-ranging constant torque and weak magnetic zone, it achieves an impressive 20-30% higher efficiency compared to conventional motors. This ensures peak performance across diverse frequencies, offering consistent and superior functionality.
2) Maintenance-Free Motor Design:Engineered with cutting-edge innovation, our permanent magnet motor is devoid of internal bearings, eliminating the need for expensive bearing maintenance and replacements. Enjoy a seamless and hassle-free experience with our maintenance-free motor design.
3) Advanced Integrated Frequency Converter: Our compressor incorporates China's leading frequency system, providing precise and comprehensive speed regulation. It seamlessly adapts to actual gas demand, optimizing energy conservation while maximizing operational efficiency.
4) Elimination of Transmission Loss: Thanks to our pioneering integrated shaft design, the permanent magnet motor is directly coupled to the compressor. This innovative, compact structure, unfettered by couplings or other transmission components, ensures 100% transmission efficiency without compromise.
5) Variable Frequency and Soft Start Capabilities:Our sophisticated variable frequency and soft start features significantly mitigate the impact on power grid equipment, safeguarding electrical components from potential damage and enhancing overall system durability.
6) Enhanced Energy Efficiency: With a frequency conversion range from 25% to 100% (surpassing the typical 50% to 100%), our system achieves over 30% energy savings compared to fixed-speed compressors. It also surpasses standard variable frequency compressors by approximately 5%, delivering even greater savings under fluctuating gas consumption conditions.
7) Unique Two-Stage Compression Air End:Our groundbreaking two-stage compression screw machine incorporates both the first and second-stage rotors within a single casing. Driven directly by gears, each rotor achieves optimal linear speed, significantly boosting compression efficiency.
8) Innovative Internal Spray Curtain Cooling:Our highly efficient internal spray curtain cooling technique substantially reduces compressed air temperatures through near-isothermal compression, minimizing pressure loss and enhancing overall efficiency.
9) Minimized Internal Leakage:Employing a two-stage compression process, we significantly reduce the compression ratio for each stage, minimizing internal leakage from high to low-pressure ends. This advancement leads to improved volume efficiency.
10) Significant Noise Reduction:Our two-stage compression process effectively reduces the compression ratio, significantly lowering operational noise, especially during unloading phases, for a quieter and more serene working environment.
11) Effortless Maintenance and Service:The two-stage compressor unit shares similar systems and structures with single-stage units, aside from the screw air end, simplifying maintenance and ensuring user-friendly operation for all users.
| Sanzhi (Henan) Compressor Co,. Ltd. |
| Two-Stage Compression Permanent Magnet Variable Frequency Screw Air Compressor |
| Model |
Power |
Exhaust pressure |
Free air delivery* of unit at working pressure |
Voltage |
Frequency |
Air outlet discharge size |
Weight |
Dimensions |
| KW |
Mpa |
m³/min |
V |
Hz |
Inch |
Kg |
L*W*H(mm) |
| SZ15VF-II |
15 |
0.5 |
4.00 |
380 |
50 |
G1½ |
660 |
1450*780*1180 |
| 0.8 |
3.00 |
| 1.3 |
2.00 |
| SZ19VF-II |
18.5 |
0.5 |
5.00 |
380 |
50 |
G1½ |
680 |
1450*780*1180 |
| 0.8 |
4.00 |
| 1.3 |
3.80 |
| 1.6 |
2.20 |
| SZ22VF-II |
22 |
0.5 |
6.60 |
380 |
50 |
G1½ |
730 |
1650*880*1280 |
| 0.8 |
4.20 |
| 1.3 |
3.00 |
| 1.6 |
2.50 |
| SZ30VF-II |
30 |
0.5 |
7.00 |
380 |
50 |
G1½ |
980 |
2000*1260*1560 |
| 0.8 |
6.40 |
| 1.3 |
4.00 |
| 1.6 |
3.00 |
| SZ37VF-II |
37 |
0.5 |
10.00 |
380 |
50 |
G1½ |
1080 |
2000*1260*1560 |
| 0.8 |
7.00 |
| 1.3 |
5.50 |
| 1.6 |
4.00 |
| SZ45VF-II |
45 |
0.5 |
13.00 |
380 |
50 |
G2 |
1980 |
2000*1260*1560 |
| 0.8 |
10.00 |
| 1.3 |
6.50 |
| 1.6 |
5.00 |
| SZ55VF-II |
55 |
0.5 |
17.00 |
380 |
50 |
G2 |
2180 |
2150*1300*1730 |
| 0.8 |
12.00 |
| 1.3 |
8.60 |
| 1.6 |
5.00 |
| SZ75VF-II |
75 |
0.5 |
20.00 |
380 |
50 |
G2 |
2280 |
2150*1300*1730 |
| 0.8 |
16.50 |
| 1.3 |
11.00 |
| 1.6 |
9.00 |
| SZ90VF-II |
90 |
0.5 |
24.00 |
380 |
50 |
DN65 |
3200 |
2700*1920*1820 |
| 0.8 |
20.00 |
| 1.3 |
14.00 |
| 1.6 |
11.00 |
| SZ110VF-II |
110 |
0.5 |
28.00 |
380 |
50 |
DN65 |
3360 |
2700*1920*1820 |
| 0.8 |
24.50 |
| 1.3 |
18.00 |
| 1.6 |
14.00 |
| Due to product updates, the above parameters are subject to deviation in kind. |
1. Unparalleled Price Advantage
By eliminating intermediaries, Sanzhi delivers unbeatable ex-factory prices, allowing our esteemed customers to claim a dominant position in the market with our competitively priced, high-quality compressors.
2. Direct Transactions
Experience the exceptional dependability of factory-direct products, ensuring unmatched quality and cost-efficiency for all your air compression needs.
3. Tailored OEM & ODM Services
Harness our factory's outstanding production and management prowess to benefit from bespoke OEM/ODM services that flawlessly meet your unique specifications.
4. Bespoke Customization Services
We welcome requests for non-standard and export specifications, accommodating diverse voltage, power, and pressure requirements. Contact us to satisfy your exacting needs.
5. Small Order Acceptance
Test the exceptional performance of our products with a small trial order, ensuring they meet and exceed your highest quality standards.
6. Swift Delivery
Receive premium products with our steadfast commitment to prompt and dependable delivery, keeping your operations running smoothly and efficiently.
7. Comprehensive Authorization
Elevate your sales strategy with our comprehensive authorization certificates, offering you the assurance and confidence to successfully represent and market SANZHI brand products.
Sanzhi (Henan) Compressor Co., Ltd. stands as an eminent beacon of excellence in the design and manufacture of state-of-the-art screw air compressors and vacuum pumps. With over ten years of unparalleled industry experience, our expertise is reflected in a vast array of products. Our lineup showcases normal and low-pressure screw air compressors, the pioneering permanent magnet frequency conversion screw air compressors, and innovative twin-stage compression screw air compressors. We also cater to specialized needs with models for laser cutting, alongside versatile single-tank and double-tank mobile screw air compressors, available in both electric and diesel-powered versions, and robust screw vacuum pumps. Engage with our remarkable engineering prowess, crafted to cater to an extensive range of industrial applications and needs.
Our production prowess is fortified by cutting-edge, lean multi-air compressor assembly lines, ensuring unmatched efficiency and productivity. A dedicated team of over 50 professionals continually optimizes our management systems, such as ERP, drastically reducing lead times and guaranteeing the swift delivery of high-caliber products.
Our unwavering commitment to quality is exemplified by our ISO9001 certification. We strictly adhere to rigorous quality management protocols, implementing thorough quality control measures. Each machine is subjected to meticulous inspections throughout the material, production, and pre-delivery phases, ensuring that we uphold only the highest quality standards.
We take great pride in our outstanding customer service, which begins with expert pre-sales consultation, assisting clients in selecting the perfect air equipment tailored to their specific facilities, with extensive customization options available in both appearance and configuration. We specialize in providing OEM solutions tailored to unique dealer requirements. Our after-sales team, comprising adept sales and service professionals, ensures rapid and efficient responses to all customer inquiries and needs, fostering lasting satisfaction and trust.
At Sanzhi (Henan) Compressor Co., Ltd., our steadfast commitment to delivering reliable and superior products remains unshaken. We focus on nurturing enduring relationships with our clientele through prompt delivery, top-tier machines, and competitive pricing. Trust us to provide exceptional compressed air solutions that perfectly meet your every requirement.
Nestled in the heart of Xinzheng City, Henan Province, China, our factory is easily accessible for all visitors. We offer complimentary pick-up services from Xinzheng International Airport, located just 30 kilometers away-a convenient one-hour journey to our facility. We warmly invite you to visit and experience our operations firsthand!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are an experienced manufacturer of screw air compressors, boasting over a decade of industry expertise.
Q2. How do you control quality?
A: 1. Rigorous inspection of raw materials to ensure the purity and quality of our components.
2. Stringent control of installation procedures to maintain high standards throughout the production process.
3. Each machine undergoes a minimum of 5 hours of continuous testing before dispatch, guaranteeing optimal performance under various conditions.
Q3. What information must I provide to get the suitable machine?
1. Required air delivery capacity (Unit: CFM or m³/Min) to match your operational needs.
2. Desired working pressure (Unit: PSI, Bar, or Mpa) to ensure efficiency and compatibility.
3. Voltage and frequency specifications of your country (V/Hz) to ensure seamless integration.
4. Any additional accessories needed, such as air tanks, filters, or air dryers, for a complete setup.
Provide this information, and we will engineer the perfect solution tailored specifically for you!
Q4. What is the general unit conversion?
1 Bar = 0.1 Mpa = 14.5 PSI for precise pressure measurement.
1 m³/min = 35.32 cfm for accurate air flow calculation.
1 KW = 1.34 HP for correct power conversion.
Q5. What is the available voltage air compressor?
A: Sanzhi provides a vast selection of voltage options, including 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p, with customization available to satisfy your specific requirements, ensuring optimal compatibility.
Q6. How long is the delivery time?
A: For our standard voltage models, you can revel in the swift and efficient delivery, arriving at your doorstep in a remarkable 15 working days from order confirmation. For non-standard models, we encourage you to reach out to our dedicated and expert sales team for bespoke guidance and assistance tailored to your unique needs.
Q7. What's the payment term?
A: Secure your purchase with ease through a 30% T/T deposit, followed by a 40% T/T payment prior to shipment. The concluding 30% T/T is payable upon receipt of the B/L copy. To accommodate our valued clients, we are pleased to accept payments in both USD and RMB, offering flexibility and convenience.
Q8. How about your warranty?
A: Experience unrivaled assurance with our extensive warranty coverage: a full one-year warranty for the entire machine, complemented by an added two-year warranty for the screw air compressor, excluding consumable spare parts, ensuring your satisfaction and peace of mind.
Q9. What about the maintenance?
A: Initial maintenance is essential after 500 hours of operation, followed by routine maintenance every 2000-3000 hours. It's crucial to consider the actual working conditions to maintain optimal performance and longevity of the equipment.
Q10. Can machines be run in high-temperature environments?
A: Certainly! Our machines are meticulously designed to deliver exceptional performance in high-temperature environments, boasting a robust operational temperature range from -20° to 45° (-4ºF to 113ºF), ensuring reliability and efficiency.
Q11. Do you offer OEM service?
A: Yes, we proudly offer both OEM and ODM services, backed by our professional design team. Let us bring your innovative ideas to life with our expertise and tailored solutions.
Q12. How long could your air compressor be used?
A: Our air compressors are engineered to deliver an impressive lifespan, typically exceeding 10 years, providing long-term reliability and sustained high performance.
Q13. Will you provide some spare parts for the machines?
A: Absolutely! We supply essential spare parts to ensure the seamless and efficient operation of your machines, minimizing downtime and enhancing performance.
Q14. How about your after-sales service?
A: We provide comprehensive after-sales support, offering detailed online installation and commissioning instructions. Additionally, our experienced engineers are available for on-site training and installation assistance, ensuring your equipment operates at peak performance.
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