Internal Structure Frontside
Internal Structure Backside
Working Principle
In the prestigious realm of air compression technology, maximizing energy efficiency stands as a paramount goal. In theory, the energy required for single-stage compression mirrors that needed for a multi-stage process. However, real-world scenarios introduce challenges like coupling inefficiencies, bearing friction, and viscosity-induced cooling effects, all escalating energy consumption. By astutely minimizing the compression ratio at each stage, multi-stage systems significantly diminish overall power usage, thus delivering exceptional efficiency compared to their single-stage counterparts.
Introducing an engineering marvel: the innovative two-stage screw air compressor, boasting a dual-stage rotary screw design. This design orchestrates a symphony of efficiency, where active and passive screws perform in perfect harmony. Powered by external force, the active screw brilliantly drives the passive one. This revolutionary concept starts with a low-pressure screw assembly in the first phase, which seamlessly transitions to a high-pressure screw group in the second. Each screw is enveloped by a cutting-edge sealing air film, ensuring maximum performance. Through their rotating motion, the screws guide the air on a captivating journey of suction, pressurization, and eventual exhaust.
First Stage Compression: Within the inaugural phase of the two-stage screw air compressor, a meticulously crafted low-pressure screw assembly adeptly compresses the gas. The gas is expertly drawn into the compression chamber through a precise suction valve, meeting the high-speed rotation of the screw rotor, setting the stage for optimal compression, preparing it seamlessly for the subsequent stage.
Second Stage Compression: As the gas advances to this phase, it enters a much more confined screw space, dramatically elevating its temperature and pressure. With extraordinary precision, the exhaust valve opens to release the high-pressure gases from the system, triumphantly concluding this remarkable compression journey.
Air is skillfully guided into the initial compression stage through an advanced air filter, melding flawlessly with a meticulous amount of lubricating oil. This expertly compressed blend creates an interstage pressure. After compression, the gas travels through a cooling channel, encountering a thorough oil mist, which effectively decreases its temperature. This cooled gas is then directed into the second-stage rotor for further compression, reaching the desired final exhaust pressure. In a masterstroke of engineering, the compressor proficiently expels the gas via the exhaust valve, completing the entire compression cycle with impeccable 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:Elevate your expectations with our state-of-the-art PM motor, featuring a notably broader spectrum for constant torque and weak magnetic ranges. Experience an astounding efficiency boost of up to 20-30% over traditional motors. This cutting-edge permanent magnet motor consistently sustains its exceptional efficiency across variable frequency conditions, ensuring outstanding and dependable performance.
2) Maintenance-Free Motor:Meticulously designed, our bearing-free permanent magnet motor eliminates the inconvenience and cost of bearing maintenance and replacements. Embrace true maintenance-free functionality, guaranteeing uninterrupted uptime and significantly reduced operational expenses.
3) Advanced Integrated Frequency Converter:Equipped with China's premier frequency system, our compressor delivers unmatched precision and a vast speed regulation spectrum. It intuitively adjusts to real-time gas requirements, showcasing extraordinary energy-saving capabilities while keeping energy expenditures at a minimum.
4) Zero Transmission Loss:The innovative, seamlessly integrated shaft connection between the permanent magnet motor and compressor eliminates traditional couplings and transmission components, achieving an impeccable 100% transmission efficiency. This is a testament to engineering brilliance in energy conservation.
5) Variable and Soft Start MechanismsProtect your power grid infrastructure with our sophisticated variable frequency start and soft start features. These mechanisms reduce impact, enhance the longevity and protection of electrical components, prevent potential damage, and optimize performance stability.
6) Enhanced Energy Conservation:Unlock revolutionary energy savings with a frequency conversion range extending from 25% to 100%, surpassing the typical 50%-100% range. Achieving over 30% energy efficiency compared to fixed-speed compressors, this unit offers even greater savings for systems with fluctuating gas demands.
7) Unique Two-Stage Compression Air End:Experience the power of our two-stage compression screw design, which integrates first and second-stage rotors within a single casing. Driven by precision gears, each stage optimizes linear speeds, dramatically enhancing overall compression efficiency to unprecedented levels.
8) Innovative Internal Spray Curtain Cooling:Leverage high-efficiency internal spray curtain cooling, which significantly reduces compressed air temperature. This innovative approach achieves near-isothermal compression, minimizing pressure loss and substantially increasing compression efficiency for unmatched performance.
9) Minimized Internal Leakage:Through groundbreaking two-stage compression, each stage's compression ratio is lowered, effectively minimizing internal leakage. This enhances volumetric efficiency and ensures optimal performance and reliability.
10) Superior Noise Reduction:Our two-stage compression innovation not only lowers the compression ratio for improved efficiency but also significantly reduces noise levels, particularly noticeable during unloading, fostering a more pleasant and quieter working environment.
11) Effortless Maintenance and Service:Designed comparably to single-stage units, aside from the screw air end, our two-stage compressor offers easy-to-handle maintenance. Its straightforward operation ensures effortless serviceability, enhancing the user experience.
12) Door Panels are Removable:Constructed with sound-dampening metal panels lined with premium sound-absorbing materials, this unit complies with international noise standards. The removable door panels provide a generous 270-degree access, dramatically simplifying maintenance tasks, optimizing service efficiency, and guaranteeing adherence to 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. stands as a luminary in the realm of manufacturing, revered for its profound expertise and innovative prowess in the crafting of screw air compressors and screw vacuum pumps. Over the last ten years, we have meticulously honed our skills, broadening our scope to offer an impressive array of superior solutions. Our prestigious collection encompasses standard as well as low-pressure screw air compressors, revolutionary permanent magnet frequency conversion screw air compressors, and innovative two-stage compression screw air compressors. Our tailored offerings span screw air compressors specifically designed for laser cutting, dynamic single-tank and double-tank mobile screw air compressors, versatile electric and diesel mobile screw air compressors, and state-of-the-art screw vacuum pumps, along with a suite of pioneering advancements.
In our state-of-the-art production facility, we realize unparalleled operational efficiency, courtesy of our expertly designed lean multi-air compressor assembly lines. Driven by a passionate team of over 50 outstanding employees, our operations flourish through the relentless enhancement of management systems, including ERP, aimed at minimizing lead times and guaranteeing the prompt delivery of products of unmatched quality.
Our unyielding commitment to quality management is embodied in our factory's proud ISO9001 certification. We implement stringent and rigorous quality management protocols, ensuring each machine undergoes comprehensive inspections, from initial material checks to production evaluations, culminating in thorough pre-delivery assessments.
Our all-encompassing customer service journey spans every stage from pre-sales through after-sales. Prior to purchase, we provide expert consultations, guiding you to select the optimal air equipment. We offer extensive customization options, including bespoke OEM products tailored to specific dealer requirements. Post-purchase, our highly trained sales and service team is always ready to swiftly address and fulfill any customer requests.
At Sanzhi (Henan) Compressor Co., Ltd., we are steadfast in our commitment to providing superior, reliable products while cultivating enduring customer relationships. Our pledge to efficient delivery, outstanding quality, and competitive pricing firmly positions us as your esteemed partner in acquiring the most effective compressed air solutions.
Strategically situated in Xinzheng City, Henan Province, China, our factory offers complimentary transportation from Xinzheng International Airport, located just 30 kilometers away. This convenient one-hour journey ensures a hospitable and welcoming introduction to our prestigious company!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a distinguished manufacturer that specializes in screw air compressors, proudly boasting over a decade of industry excellence and innovation.
Q2. How do you control quality?
A: 1. We conduct stringent inspections on all raw materials to ensure they meet our exceptional quality standards.
2. We exercise rigorous control over our installation processes to uphold our superior standards.
3. Each machine undergoes a minimum of five hours of continuous testing before 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 perfectly suited to 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 meticulously crafted to cater to a wide array of voltage requirements with unrivaled precision. Whether you need standard compatibility like 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, or 440v/60hz/3p, our compressors are designed to meet your needs effortlessly. For unique specifications, we offer bespoke customization services, ensuring an exquisite fit to your precise requirements, delivering a truly tailored solution.
Q6. How long is the delivery time?
A: We are committed to swift delivery for standard voltage orders, proudly dispatching within a remarkably short span of just 15 working days post-order confirmation. For non-standard specifications, our dedicated sales team is prepared to offer personalized assistance, ensuring your needs are met without delay.
Q7. What's the payment term?
A: Our payment terms are crafted for maximum flexibility and ease, requiring 30% T/T in advance, 40% T/T before shipment, and 30% upon receipt of the B/L copy. We accommodate payments in either USD or RMB to align with your preferences, ensuring a seamless transaction experience.
Q8. How about your warranty?
A: We confidently back our products with a robust one-year warranty for the entire machine, complemented by an additional two-year warranty specifically for the screw air compressor. Please note, consumable spare parts are excluded from this coverage.
Q9. What about the maintenance?
A: To maintain optimal performance, we recommend the first maintenance after 500 operational hours. Thereafter, routine maintenance every 2000-3000 hours is advised, tailored to your specific operational conditions for maximum efficiency.
Q10. Can machines be run in high-temperature environment?
A: Absolutely! Our machines are expertly designed to thrive in high-temperature environments, boasting robust performance from -20° to 45° (-4ºF to 113ºF), ensuring exceptional reliability and efficiency even in extreme heat.
Q11. Do you offer OEM service?
A: Yes, indeed! We are pleased to extend our comprehensive OEM & ODM services. Our proficient design team is fully equipped to handle customized orders, ensuring your specific needs and visionary ideas are brought to life with precision and creativity.
Q12. How long could your air compressor be used?
A: Our air compressors are engineered for extraordinary longevity, delivering steadfast reliability and powerful performance that exceeds expectations, with durability that ensures over 10 years of exceptional service.
Q13. Will you provide some spare parts for the machines?
A: Certainly, we are committed to ensuring seamless, uninterrupted operation of your machines. We provide essential spare parts as needed, offering peace of mind and a promise of continuous productivity.
Q14. How about your after-sales service?
A: Our after-sales services are comprehensive, ranging from online guidance for installation and commissioning to hands-on training and installation support from our expert engineers. We aim to ensure your complete satisfaction and operational success at every stage.
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