Introducing the groundbreaking Low-Pressure Compressor, an extraordinary innovation exclusively from Sanzhi (Henan) Compressor Co., Ltd.! Embark on an unrivaled journey of industrial excellence with our spectacular Two-Stage Compression Permanent Magnet Variable Frequency Drive Screw Air Compressor. This exceptional engineering marvel is meticulously designed to offer an outstanding array of power options, ranging from a robust 15KW to a remarkably impressive 250KW. Engineered with precision and versatility in mind, this powerhouse of reliability and efficiency is set to revolutionize your operations. Experience the transformative power of this state-of-the-art compressor, meticulously crafted to exceed the diverse and demanding requirements of today's industries. Immerse yourself in the pinnacle of air compression technology with this high-capacity machine, ideally suited for heavy-duty applications. With its sophisticated two-stage air cooling system, the compressor ensures unrivaled performance and longevity, establishing itself as the premier choice for businesses aiming to streamline operations and maximize productivity. Discover the pioneering brilliance of Sanzhi, where superior quality harmonizes seamlessly with exceptional performance to elevate industrial expectations to new heights. The future of air compression awaits-embrace innovation with Sanzhi.
Internal Structure Frontside
Internal Structure Backside
Working Principle
Within this meticulously engineered air compression environment, lies the secret to achieving superior energy efficiency. In single-stage compression, energy demand is usually on par with multi-stage systems. However, when real-world factors such as coupling power losses, bearing friction, and the cooling effects of fluid viscosity come into play, energy consumption tends to increase. Through skillful optimization of the compression ratio at every stage, these inefficiencies are significantly minimized. Consequently, the overall power consumption of multi-stage compression is notably less than that of single-stage, ensuring a more refined and cost-efficient operation.
Presenting our cutting-edge two-stage screw air compressor, which boasts an exquisitely advanced twin-stage rotary screw mechanism. This brilliant design features an active screw in each stage, propelling a passive screw through a formidable external power transmission system. The system initiates with a low-pressure screw group, progressing to a high-pressure screw group in the following stage. Each screw is encased in a protective sealing air film. During operation, the gas undergoes a precise three-phase cycle-suction, pressurization, and exhaust-delivering unmatched compression efficiency and superior performance.
First Stage Compression: The journey begins with our two-stage screw air compressor expertly compressing gas using the low-pressure screw group. Initially, the gas is drawn into the compression chamber via the suction valve, where the rapid rotation of the screw rotor compresses it. After this initial compression, the gas seamlessly transitions to the second stage, paving the way for further compression advancements.
Second Stage Compression: As the process moves to the next stage, the gas undergoes intensified compression within a more compact screw space, reaching elevated temperatures and pressures. This culminates as the exhaust valve opens, allowing the high-pressure gases to exit the system, thereby completing the entire compression cycle with unparalleled precision and effectiveness.
The air embarks on its journey by entering through the air filter into the first compression stage, where it merges with a precise amount of lubricating oil. This blend is compressed to an intermediate pressure. Subsequently, the gas traverses a cooling channel, interacting with a dense oil mist, which significantly reduces the temperature. The cooled, compressed gas then proceeds to the second-stage rotor for its ultimate compression to the final exhaust pressure. Upon reaching this concluding phase, the fully compressed gas exits the system via the exhaust valve, completing the compression cycle with exceptional precision and efficiency.
1) High efficiency of PM motor:Experience the pinnacle of energy efficiency with our avant-garde permanent magnet motor, a marvel of modern engineering. This dynamic powerhouse exceeds the efficiency of traditional motors by an impressive 20-30%. Its expansive constant torque range, paired with pioneering weak magnetic dynamics, ensures it delivers peak efficiency even beyond its rated frequency, guaranteeing unmatched performance at every step.
2) Two-stage compression unique air end:Discover the innovation of our two-stage compression screw system, featuring a meticulously engineered air end. This system harmoniously blends dual compression rotors within a single casing, powered by directly gear-driven rotors that achieve optimal linear speeds. This design not only amplifies compression efficiency but also promises reliability that stands the test of time.
3) Integrated frequency converter: Embrace the cutting-edge with our premier frequency system, the foremost in China. Our compressor offers an extensive range of precise speed regulation, allowing users to seamlessly adapt the frequency to real-time gas demands, resulting in substantial energy savings and superior performance.
4) Reduce internal leakage:Our trailblazing two-stage compression technology diminishes the compression ratio per stage, significantly curtailing internal leakage from high to low-pressure ends. This innovation translates to enhanced volumetric efficiency and elevates the overall performance of the compressor to new heights.
5) Variable frequency start and the soft startHarnessing the power of variable frequency and soft start features, our motor minimizes the impact on power grid systems, effectively protecting electrical components from potential harm and extending their operational lifespan.
6) Reduce energy consumption: Our sophisticated frequency conversion system excels in efficiency, operating seamlessly from 25% to 100%, surpassing the conventional 50% to 100% range. It delivers over 30% energy savings compared to fixed-speed compressors, with an added 5% efficiency boost over standard variable frequency systems, making it ideal for fluctuating gas needs.
7) No transmission loss: Our ingenious design, featuring a direct coupling between the permanent magnet motor and compressor, eradicates the need for transmission components. This ensures impeccable 100% transmission efficiency, securing optimal performance without compromise every time.
8) Air cooling method: Our highly efficient air cooling system delivers remarkable cooling capability, significantly reducing the temperature of compressed air. This method supports near-isothermal compression, minimizes pressure loss, optimizes the compression ratio, and enhances overall efficiency, providing unmatched cooling power.
9)Smart Touch Controller: Introducing our advanced smart controller, equipped with built-in intelligence to minimize manual interventions. With its high-resolution color electronic display, it offers intuitive graphical interfaces, maintenance reminders, fault alerts, and safety shutdown notifications, ensuring seamless and continuous operation.
10)Special Type Intake Valve:The automatic opening feature ensures smooth engine fuel injection and oil circulation, elevating overall system efficiency to a new level.
Our design, characterized by remarkably low oil circuit loss, achieves a significant surge in efficiency, optimizing performance.
Equipped with a normally open solenoid valve, it guarantees a secure seal during emergency stops, effectively preventing oil injection and ensuring maximum system safety.
11)Excellent Air Filter:Our premium air filter sets the standard for air purification with its robust three-stage filtration system, ensuring the highest air quality. It effectively removes steam and dust, exceeding stringent emission standards for an eco-friendly operation.
12)High-Quality Soundproof Cotton:Featuring an innovative noise reduction housing complemented by premium soundproof cotton, our design significantly curtails operational vibrations and noise, delivering a quieter and more efficient work environment.
13) Motor maintenance-free:Unleash the future of compressor innovation with our groundbreaking, maintenance-free permanent magnet motor design-a true marvel that ingeniously removes internal bearings. This revolutionary breakthrough not only eradicates the cumbersome need for bearing upkeep and replacements but also significantly slashes long-term maintenance costs. Consequently, our state-of-the-art compressor systems offer heightened reliability, consistently delivering peak performance over extended periods. Opt for our pioneering solution to experience unparalleled cost-effectiveness and dependability like never before.
14) Noise Reduction: Immerse yourself in the serene calmness created by Sanzhi (Henan) Compressor Co., Ltd.'s cutting-edge two-stage compression technology. This exceptional system is meticulously designed to optimize the compression ratio, resulting in a substantial reduction in operational noise levels, especially during unloading phases. Embrace a quieter, more efficient work environment that enhances productivity, all thanks to the Sanzhi Efficient Robust Two-Stage Permanent Magnet VFD Screw Compressor. Trust in Sanzhi's unmatched engineering prowess to elevate the quality of your industrial operations to new heights.
15) Effortless Maintenance and Unmatched Service: Experience the future of hassle-free maintenance with our cutting-edge two-stage compressor unit, expertly engineered by Sanzhi (Henan) Compressor Co., Ltd. This state-of-the-art design preserves the familiar architecture and systems of a single-stage compressor, with the notable exception of the screw air end. This innovative approach ensures that maintenance and service remain straightforward and user-friendly. Enjoy seamless maintenance coupled with consistent, superior performance from the Sanzhi Efficient Robust Two-Stage Permanent Magnet VFD Screw Compressor. Count on Sanzhi for effortless maintenance and extraordinary results.
| 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. Competitive Pricing
Unlock an exceptional value experience with Sanzhi (Henan) Compressor Co., Ltd. Partnering with us grants you access to exclusive, factory-direct pricing that provides a powerful competitive edge in your industry. Propel your market presence with our strategic pricing excellence, carefully designed to boost your profitability and fortify your market position.
2. Direct Transactions
Enhance your purchasing experience with our cost-effective and seamless direct transaction model. Our streamlined logistics pipeline ensures products reach you straight from our factory, promising substantial savings and a consistently reliable supply chain, tailored to meet your needs efficiently.
3. OEM & ODM Services
Harness our advanced production and management capabilities to access exemplary OEM and ODM services. Each offering is meticulously crafted to align precisely with your bespoke needs, ensuring that all custom requirements are executed with impeccable attention to detail and excellence.
4. Customized Solutions
Excel in managing non-standard and export orders with our bespoke solutions. We cater to diverse voltage, power, and pressure specifications, expertly crafting responses that meet your unique specifications. Share your distinct requirements, and we'll develop solutions that seamlessly align with your precise expectations.
5. Small Order Acceptance
Embark on your journey with us through a small trial order and witness the extraordinary quality of our products firsthand. Ensure your complete satisfaction before scaling up to larger orders, providing you with ultimate peace of mind and unwavering confidence in your choice.
6. Rapid Delivery
Experience peace of mind with our fast and reliable delivery services. We prioritize the swift arrival of our superior products, ensuring your operations remain uninterrupted and function at peak efficiency.
7. Comprehensive Authorization
Elevate your distribution potential with our robust authorization certifications. Market and distribute SANZHI brand products with absolute assurance, backed by our extensive and rigorous certification process that empowers your success and strengthens your business growth.
Sanzhi (Henan) Compressor Co., Ltd stands as a beacon of innovation and excellence in the dynamic world of screw air compressors and vacuum pumps. With a rich legacy spanning over ten years, we proudly offer a diverse and groundbreaking product line. Our impressive selection includes both standard and low-pressure screw air compressors, ultra-efficient permanent magnet frequency conversion screw air compressors, and advanced two-stage compression screw air compressors. Catering to niche requirements, we provide specialized laser cutting screw air compressors, alongside versatile single-tank and double-tank mobile screw air compressors. Our meticulously engineered electric and diesel mobile screw air compressors deliver exceptional performance. Furthermore, our cutting-edge screw vacuum pumps are crafted to exceed the highest industrial standards.
Our state-of-the-art production facility features advanced multi-air compressor assembly lines, ensuring unparalleled efficiency and precision in every product we create. Driven by a passionate team of over 50 highly skilled professionals, we are dedicated to enhancing our management systems, including ERP, to significantly reduce lead times and guarantee the swift delivery of premium products. Our relentless pursuit of innovation positions us at the forefront of the industry, setting new benchmarks of excellence.
Our expertly designed management systems are dedicated to upholding the highest quality standards. With the prestigious ISO9001 quality management system certification, we implement rigorous quality control measures. Each machine undergoes thorough inspections at multiple stages, including material selection, production checks, and pre-delivery evaluations, ensuring unparalleled reliability and excellence. Our unwavering commitment to quality assurance provides you with the confidence in superior performance.
Discover our outstanding customer service, starting with our pre-sales team offering expert guidance to help you select the ideal air equipment for various facilities. We provide extensive customization options, including design and configuration adjustments, and deliver tailor-made solutions to meet specific dealer requirements through our OEM services. Our professional sales and support team is always on hand to provide timely and effective post-sales assistance, ensuring your needs are addressed swiftly and accurately. Experience unrivaled customer care with Sanzhi.
At Sanzhi (Henan) Compressor Co., Ltd, we are dedicated to providing products that epitomize superiority, reliability, and stability. Committed to fostering long-lasting partnerships with our clients, we ensure timely delivery, world-class machinery, and competitive pricing. Our goal is to offer the optimal compressed air solution tailored to your specific requirements, delivering unmatched value, performance, and satisfaction.
Situated in the charming Xinzheng City, Henan Province, China, our factory is conveniently located just 30 kilometers from Xinzheng International Airport, making it easily accessible-approximately an hour's drive away. We warmly welcome you to visit our facility and experience our exceptional offerings firsthand! Come and discover the unique Sanzhi experience in person.
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a highly esteemed manufacturer with a specialization in screw air compressors, boasting over a decade of profound industry expertise. Our extensive experience distinctly differentiates us in the marketplace, showcasing our remarkable capabilities.
Q2. How do you control quality?
A: 1. We perform comprehensive inspections of our raw materials to ensure exceptional quality before beginning production.
2. Our installation process is rigorously monitored at every stage to ensure precision and excellence.
3. Every machine undergoes a minimum of 5 continuous hours of rigorous testing before dispatch, guaranteeing peak performance and reliability.
Q3. What information must I provide to get the suitable machine?
1. Your required air delivery capacity (Unit: CFM or m³/Min).
2. The desired working pressure (Unit: PSI, Bar or Mpa).
3. The voltage and frequency specifications of your country of residence (V/Hz).
4. Any additional accessories needed, such as an air tank, filters, or air dryers.
Please share this information with us, and we will craft a perfectly tailored solution just for you! Our expertise ensures that we meet your precise needs with unparalleled precision and excellence.
Q4. What is the general unit conversion?
1Bar = 0.1Mpa = 14.5PSI
1m³/min = 35.32 cfm. This precise conversion highlights the outstanding capability of our compressors, empowering them to meet the expansive demands of industrial applications with extraordinary performance and unparalleled efficiency.
1KW = 1.34 HP. This power conversion underscores the impressive prowess of our compressors in delivering substantial power, ensuring steadfast and dependable operation even when faced with the most challenging environments.
Q5. What is the available voltage air compressor?
A: Sanzhi (Henan) Compressor Co., Ltd. offers an adaptable array of voltage options to meet global requirements. Choose from 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p. We excel in delivering finely customized solutions to precisely match your electrical needs, ensuring supreme compatibility and superior performance.
Q6. How long is the delivery time?
A: For standard voltage models, our streamlined processes guarantee dispatch within an impressive 15 working days following order confirmation. For non-standard voltage requirements, connect with our devoted sales team for a detailed delivery timeline, expertly tailored to your individual specifications.
Q7. What's the payment term?
A: Our payment terms are crafted for utmost convenience: 30% T/T in advance, 40% T/T before shipment, and the final 30% T/T upon receiving the B/L copy. We welcome payments in both USD and RMB, offering flexibility and ease for seamless transactions.
Q8. How about your warranty?
A: Sanzhi proudly provides a comprehensive warranty, offering peace of mind: one year for the entire machine, and two years for the screw air compressor, with consumable spare parts as the exception, underscoring our dedication to quality and resilience.
Q9. What about the maintenance?
A: Initial maintenance is crucial, recommended after 500 operating hours. Subsequent maintenance should be conducted at intervals between 2000-3000 hours, based on your specific working environment, guaranteeing optimal performance and extended lifespan.
Q10. Can machines be run in high-temperature environment?
A: Absolutely! Our machines are expertly designed for outstanding performance in extreme temperatures. They ensure efficient operation across a broad range of -20° to 45° (-4ºF to 113ºF), providing reliability and endurance in the most demanding conditions.
Q11. Do you offer OEM service?
A: Yes, we are proficient in offering both OEM and ODM services. Our skilled design team excels in realizing your custom orders, crafting tailor-made solutions that perfectly reflect your specifications, enhancing brand identity and differentiation.
Q12. How long could your air compressor be used?
A: Our air compressors are meticulously crafted for exceptional longevity, boasting a remarkable lifespan that typically surpasses 10 years of reliable and efficient service, ensuring sustained productivity and significant value.
Q13. Will you provide some spare parts for the machines?
A: Absolutely, we offer a comprehensive suite of high-quality spare parts, designed to keep your machines operating smoothly and maintain peak performance, maximizing uptime and efficiency over the long term.
Q14. How about your after-sales service?
A: We provide exceptional after-sales support, including detailed online installation and commissioning guidance. If required, we can organize for expert engineers to deliver hands-on training and thorough installation assistance, ensuring seamless integration and optimal operation.
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