Internal Structure Frontside
Internal Structure Backside
Working Principle
Within the elite domain of air compression technology, achieving optimal energy efficiency is paramount. The theoretical energy needed for a single-stage compression is equivalent to the total energy for a multi-stage process. Yet, real-world applications bring forth complexities such as coupling inefficiencies, bearing friction, and viscosity-related cooling effects that elevate power demands. By smartly reducing the compression ratio at each stage, multi-stage systems can notably curb overall power usage, thereby offering superior efficiency over single-stage systems.
This innovative two-stage screw air compressor is a marvel of engineering, featuring a dual-stage rotary screw design. Each stage is a masterpiece of synergy, where active and passive screws work in concert. Powered by an external force, the active screw ingeniously propels the passive one. This revolutionary approach employs a low-pressure screw assembly in the first phase, seamlessly transitioning to a high-pressure screw group for the secondary phase. Enveloped in a state-of-the-art sealing air film, each screw achieves peak performance. The screws' rotation propels the air through a fascinating process of suction, pressurization, and eventual exhaust.
First Stage Compression: In the initial realm of the two-stage screw air compressor, a highly specialized low-pressure screw assembly meticulously compresses the gas. Expertly drawn into the compression chamber through the suction valve, the gas meets the high-speed rotation of the screw rotor, setting the stage for efficient compression, priming it perfectly for the next stage.
Second Stage Compression: As the gas progresses to this stage, it enters a more confined screw space, significantly intensifying its temperature and pressure. With remarkable precision, the exhaust valve opens to release the high-pressure gases from the system, triumphantly concluding the compression journey.
Natural air is expertly channeled into the initial compression stage through a sophisticated air filter, blending seamlessly with a precise amount of lubricating oil. This expertly compressed mixture achieves an interstage pressure. Post compression, the gas traverses a cooling channel, encountering an extensive oil mist that effectively reduces its temperature. This cooled gas is directed into the second-stage rotor, where further compression occurs to attain the desired final exhaust pressure. In a masterful conclusion, the compressor efficiently expels the gas via the exhaust valve, completing the entire compression cycle with brilliant precision.
| 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 Efficiency of PM Motor:Discover a groundbreaking elevation in performance with our PM motor, where the spectrum for constant torque and weak magnetic ranges is strikingly broader. Witness an impressive enhancement in efficiency by up to 20-30% over conventional motors. This innovative permanent magnet motor maintains its superior efficiency even under varying frequency conditions, consistently delivering exceptional and reliable performance.
2) Maintenance-Free Motor:Expertly engineered, this bearing-free permanent magnet motor abolishes the hassle and expense of bearing maintenance and replacements. Enjoy a truly maintenance-free operation, promising continuous uptime and reduced operational costs.
3) Advanced Integrated Frequency Converter:Our compressor is outfitted with China's leading frequency system, offering unparalleled precision and an expansive speed regulation range. It adapts intuitively to actual gas demand, showcasing remarkable energy-saving prowess and ensuring that your energy costs are kept to a minimum.
4) Zero Transmission Loss:An innovative, tightly integrated shaft connection between the permanent magnet motor and compressor does away with traditional couplings and transmission components. This results in a flawless 100% transmission efficiency, making it an engineering marvel in energy conservation.
5) Variable and Soft Start MechanismsSafeguard your power grid infrastructure with our advanced variable frequency start and soft start functionalities. By minimizing impact, these mechanisms ensure the longevity and protection of electrical components, preventing potential damage and optimizing performance stability.
6) Enhanced Energy Conservation:Experience groundbreaking energy savings with a frequency conversion range that spans from 25% to 100%, surpassing the traditional 50%-100% range. This unit achieves more than 30% energy efficiency compared to fixed-speed compressors, with even greater savings in systems facing fluctuating gas demands.
7) Unique Two-Stage Compression Air End:Discover the prowess of our two-stage compression screw design, which seamlessly integrates first and second-stage rotors in a single casing. Driven by precision gears, each stage optimizes linear speeds, dramatically amplifying overall compression efficiency to new heights.
8) Innovative Internal Spray Curtain Cooling:Harness the power of high-efficiency internal spray curtain cooling, which significantly lowers compressed air temperature. This cutting-edge technique achieves near-isothermal compression, reducing pressure loss and substantially elevating compression efficiency for unparalleled performance.
9) Minimized Internal Leakage:Through the revolutionary two-stage compression, each stage's compression ratio is reduced, effectively minimizing internal leakage. This boosts volumetric efficiency and ensures optimal performance and reliability.
10) Superior Noise Reduction:Our two-stage compression innovation not only reduces the compression ratio for enhanced efficiency but also significantly curtails noise levels, especially noticeable during unloading, creating a more pleasant and quieter working environment.
11) Effortless Maintenance and Service:Designed with parity to single-stage units, aside from the screw air end, our two-stage compressor offers user-friendly maintenance. Its ease of operation ensures straightforward serviceability, enhancing the overall user experience.
12) Door Panels are Removable:Crafted with sound-dampening metal panels and lined with premium sound-absorbing materials, this unit adheres to international noise standards. The removable door panels provide an expansive 270-degree access, dramatically simplifying maintenance tasks, optimizing service efficiency, and ensuring compliance with global noise standards.
1. Unbeatable Price Advantage That Can't Be Overlooked
We empower our esteemed clients with highly competitive, factory-direct pricing. This ensures you maintain a strategic edge over competitors in the ever-evolving market landscape, driving your success.
2. Seamless and Effortless Direct Transactions
Through direct factory supply of all our superior products, we offer you the most cost-effective solutions on the market, eliminating unnecessary overheads and enhancing value.
3. Extensive and Comprehensive OEM & ODM Services
Armed with a wealth of production expertise and impeccable management capabilities, we are committed to meeting all your OEM/ODM service needs with unmatched accuracy and unwavering dedication.
4. Tailored and Precision Customization
Experience our bespoke customization services designed for non-standard, export, voltage/power/pressure specifications. Together, we can create the perfect solution tailored to your specific and unique requirements.
5. Flexible Small Order Options
Begin with a small trial order to experience firsthand the exceptional quality and unwavering reliability our products consistently deliver, setting a new standard in excellence.
6. Swift and Expedited Rapid Delivery
We commit to delivering our premium products promptly and efficiently, ensuring your operations remain uninterrupted and continue to run smoothly and efficiently.
7. Robust and Comprehensive Authorization
For our esteemed distributors, we offer complete authorization certification, empowering you to confidently promote and market our prestigious SANZHI brand products with assurance and pride.
Sanzhi (Henan) Compressor Co., Ltd. shines as a beacon of excellence in the manufacturing landscape, lauded for our profound expertise and innovation in crafting screw air compressors and screw vacuum pumps. Over the past decade, we've meticulously refined our skills and expanded our repertoire to present a rich spectrum of premium solutions. Our distinguished lineup includes standard and low-pressure screw air compressors, trailblazing permanent magnet frequency conversion screw air compressors, and advanced two-stage compression screw air compressors. Our specialized offerings extend to screw air compressors for laser cutting, dynamic single-tank and double-tank mobile screw air compressors, versatile electric and diesel mobile screw air compressors, and cutting-edge screw vacuum pumps, among an array of pioneering advancements.
Within our cutting-edge production facility, we achieve exceptional operational efficiency, thanks to our meticulously crafted lean multi-air compressor assembly lines. Supported by a passionate team of over 50 exceptional employees, our operations thrive through relentless enhancements of management systems, including ERP, with the goal of reducing lead times and ensuring swift delivery of unparalleled quality products.
With steadfast commitment to quality management, our factory proudly bears the ISO9001 certification. We adhere to strict and rigorous quality management protocols, ensuring each machine undergoes exhaustive inspections, from material checks to production evaluations, culminating in thorough pre-delivery assessments.
Our comprehensive customer service journey spans every phase from pre-sales to after-sales. Before purchase, we offer expert consultations, guiding you to select the ideal air equipment. We provide extensive customization options, including bespoke OEM products tailored to meet specific dealer needs. Post-purchase, our highly trained sales and service team stands ready to promptly address and fulfill any customer requests.
At Sanzhi (Henan) Compressor Co., Ltd., we are unwavering in our commitment to delivering superior, dependable products while nurturing lasting customer relationships. Our dedication to efficient delivery, exceptional quality, and competitive pricing firmly establishes us as your esteemed partner in acquiring the most effective compressed air solutions.
Strategically located in Xinzheng City, Henan Province, China, our factory offers complimentary transportation from Xinzheng International Airport, situated just 30 kilometers away. This convenient one-hour journey ensures a warm and welcoming introduction to our esteemed company!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a distinguished manufacturer with a specialization in screw air compressors, proudly boasting over a decade of industry excellence and innovation.
Q2. How do you control quality?
A: 1. We perform stringent inspections on all raw materials, ensuring they meet our exceptional quality standards.
2. We exercise strict control over our installation processes to uphold our superior standards.
3. Each machine undergoes a minimum of five hours of continuous testing prior to dispatch, guaranteeing exceptional reliability.
Q3. What information must I provide to get the suitable machine?
1. Desired air delivery capacity (Unit: CFM or m³/Min)
2. Required working pressure (Unit: PSI, Bar, or Mpa)
3. Voltage and frequency in your country (V/Hz)
4. Additional accessories needed, such as air tanks, filters, or air dryers.
Provide us with this precise information, and we will craft a tailored solution to perfectly suit your needs!
Q4. What is the general unit conversion?
1Bar = 0.1Mpa = 14.5PSI
1m³/min = 35.32cfm
1KW = 1.34HP
Q5. What are the available voltage options for air compressors?
A: Sanzhi air compressors are crafted with meticulous attention to detail, designed to seamlessly accommodate a spectrum of voltage requirements. Whether you need compatibility with standard options like 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, or 440v/60hz/3p, our compressors have got you covered. For those with unique requirements, we proudly offer bespoke customization services to ensure your specifications are perfectly matched, giving you a tailored solution that fits your needs exquisitely.
Q6. How long is the delivery time?
A: For standard voltage orders, our commitment is to deliver with remarkable swiftness, achieving dispatch within an impressive timeframe of just 15 working days following order confirmation. If your needs call for non-standard specifications, our dedicated and highly responsive sales team stands ready to provide personalized assistance, ensuring no delay in meeting your requirements.
Q7. What's the payment term?
A: Our payment terms are thoughtfully crafted for flexibility and convenience, structured to include 30% T/T in advance, 40% T/T prior to shipment, and the remaining 30% T/T upon receipt of the B/L copy. We offer the choice between payments in USD or RMB, aligning with your preferences and ensuring a seamless transaction experience.
Q8. How about your warranty?
A: We stand proudly behind the excellence of our products with a formidable one-year warranty covering the entire machine, enhanced by an additional two-year warranty specifically dedicated to the screw air compressor. It is important to note that consumable spare parts are not included in the warranty coverage.
Q9. What about the maintenance?
A: To keep your compressors running at optimal performance, the first maintenance is recommended after 500 hours of operation. Subsequently, we advise scheduling routine maintenance every 2000-3000 hours, tailored to the operational conditions of your environment for peak efficiency.
Q10. Can machines be run in high-temperature environment?
A: Absolutely! Our machines are expertly engineered to excel in high-temperature conditions, exhibiting robust operational capabilities across a temperature range of -20° to 45°(-4ºF to 113ºF). This ensures outstanding reliability and efficiency, no matter how extreme the heat.
Q11. Do you offer OEM service?
A: Yes, indeed! We are delighted to offer our comprehensive OEM & ODM services. Our highly skilled design team is fully equipped to undertake customized orders, ensuring your distinct needs and visionary ideas are realized with precision and creativity.
Q12. How long could your air compressor be used?
A: Our air compressors are masterfully crafted for exceptional longevity, delivering unwavering reliability and robust performance that surpasses expectations, promising durability that extends beyond 10 years of outstanding service.
Q13. Will you provide some spare parts for the machines?
A: Certainly, we are dedicated to ensuring your machines function seamlessly and uninterrupted. We provide essential spare parts whenever needed, offering you peace of mind and the promise of continuous productivity.
Q14. How about your after-sales service?
A: We offer a comprehensive suite of after-sales services, ranging from online guidance for installation and commissioning to the deployment of our expert engineers for practical, hands-on training and installation support. Our goal is to ensure your complete satisfaction and operational success at every stage.
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