Unlock a new era of industrial excellence with the powerhouse efficiency of the Large Power Oil-Lubricated Screw Compressor, an engineering triumph from China's esteemed leader, Sanzhi (Henan) Compressor Co., Ltd. Dive into unparalleled performance with factory-direct savings on the innovative Permanent Magnet Variable Frequency Two-Stage Screw Air Compressor. Expertly crafted to revolutionize energy consumption and efficiency, this cutting-edge machine is equipped with superior High-Quality Centrifugal Fans to redefine reliability in demanding industrial applications. Elevate your operations with Sanzhi's commanding 185kw High Volume Two-Stage Screw Air Compressor, engineered for the most demanding industrial tasks, ensuring remarkable durability and performance consistency. Witness the transformative efficiency and unwavering dependability of Sanzhi's advanced compressor technology, a solution built to propel your industrial processes to unparalleled heights of performance and sustainability.
Internal Structure Frontside
Internal Structure Backside
Working Principle
In an ideal air compression scenario, the energy required for single-stage pressure transfer should align with that of multi-stage compression. Yet, real-world applications present challenges, including coupling transmission inefficiencies, friction from bearings, and increased energy demands due to the cooling effects of liquid viscosity. To elevate efficiency, it is essential to minimize the compression ratio at each stage. This ensures the total energy requirement for multi-stage compression is less than that of a single-stage process.
The two-stage screw air compressor represents a summit of engineering prowess, featuring an advanced dual rotary screw system comprised of both an active and a passive screw. The active screw is externally powered, driving the passive screw. The process starts with a low-pressure screw assembly in the first stage and transitions to a high-pressure assembly in the second. Each screw is surrounded by a sealing air film, facilitating the gas compression through rhythmic cycles of suction, pressurization, and exhaust during rotation.
First Stage Compression: In this vital phase, the low-pressure screw group begins the gas compression process. Gas is drawn into the screw compression chamber via the suction valve. The rapid rotation of the screw rotor enhances gas compression, adeptly steering it towards the second stage.
Second Stage Compression: During this essential phase, the gas is introduced into a narrower screw chamber. Here, it undergoes compression at heightened temperatures and pressures. The exhaust valve then opens, efficiently releasing the high-pressure gas from the system.
The operation initiates with ambient air being drawn into the first stage through an air filter, where it merges with a trace of lubricating oil within the compression chamber. Initially, the gas is compressed to an interstage pressure, then cooled in the cooling channel via interaction with oil mist, significantly reducing its temperature. The cooled gas is directed to the second-stage rotor for further compression to achieve the final exhaust pressure. This cycle concludes as the compressor discharges high-pressure gas through the exhaust valve with optimal efficiency.
| 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. |
Unveil the unparalleled power and efficiency of our High Volume Centrifugal Fan Two-Stage Air Compressor! This state-of-the-art system, with its high-speed rotating impeller, masterfully orchestrates air flows to deliver outstanding axial entry and rapid cooling. It transcends traditional air-cooled systems, providing relentless operational support and significantly prolonging service life.
1) High Efficiency of PM Motor:Our innovative permanent magnet motor features an expanded constant torque and weak magnetic range, offering a remarkable 20-30% increase in efficiency over conventional motors. It maintains extraordinary performance even beyond the rated frequency.
2) Maintenance-Free Motor:Expertly engineered without internal bearings, our cutting-edge permanent magnet motor eradicates expensive maintenance and replacement issues linked with standard motor bearings.
3) Integrated Frequency Converter:Equipped with China's premier frequency system, our compressor showcases an extensive and precise speed regulation range, skillfully adapting to real-time gas demands and delivering exceptional energy-saving advantages.
4) Zero Transmission Loss:The integrated shaft structure directly connects the permanent magnet motor to the compressor, eliminating the necessity for couplings and transmission components, ensuring flawless 100% transmission efficiency.
5) Variable Frequency Start and Soft Start:This feature greatly reduces the impact on power grid equipment, effectively protecting electrical systems against potential damage.
6) Reduced Energy Consumption:Our frequency conversion ranges from 25% to 100%, surpassing the conventional 50% to 100% range, resulting in over 30% energy savings compared to fixed-speed compressors and approximately 5% more than standard variable frequency models. Larger system gas consumption fluctuations further enhance these savings.
7) Unique Two-Stage Compression Air End:Our distinctively engineered air end seamlessly incorporates first and second-stage compression rotors within a single case, each directly driven by gears, ensuring optimal linear speed and maximizing compression efficiency.
8) Innovative Internal Spray Curtain Cooling Method:Our pioneering internal spray curtain cooling technique delivers exceptional cooling by significantly reducing the compressed air's temperature. It achieves near-isothermal compression, decreases interstage pressure loss, reduces compression ratios, and enhances overall efficiency.
9) Minimized Internal Leakage:By effectively reducing the compression ratio for each stage, our two-stage compression technique minimizes internal leakage from high to low-pressure ends, significantly boosting volume efficiency.
10) Noise Reduction:The two-stage compression system substantially lowers the compression ratio, leading to markedly reduced noise levels, especially during unloading cycles.
11) Easy Maintenance and Service:With a two-stage compressor unit, the similarities in systems and structures to single-stage compression simplify user maintenance and servicing, aside from the screw air end.
12) Door panels are removable:The casing, crafted from noise-treated metal, features panels equipped with high-density sound-absorbing materials, ensuring compliance with global noise standards. The door panels are designed to open and disassemble, providing 270-degree access for maintenance personnel, enhancing ease of servicing.
1. Unmatched Price Competitiveness
Experience unparalleled price competitiveness with our direct ex-factory pricing model. Elevate your market presence with substantial cost savings while maintaining the highest quality standards. Empower your business to lead and conquer with newfound confidence and formidable pricing advantages.
2. Seamless Direct Transactions
Enjoy seamless direct transactions with our factory-to-customer approach. By eliminating intermediaries, we ensure budget-friendly solutions that enhance your purchasing power. Experience affordability without compromise on superior quality, all delivered directly from our factory.
3. Exceptional OEM & ODM Services
Benefit from our exceptional OEM and ODM services, backed by cutting-edge production and management prowess. We tailor each project to meet your precise requirements, collaborating closely with you to realize your vision. Trust in our precision and excellence to deliver remarkable results.
4. Tailored Customization
Explore limitless possibilities with our tailored customization services. We welcome non-standard, export, and custom orders for voltage, power, pressure, and beyond. Partner with us to craft solutions that perfectly align with your unique specifications, ensuring a precise fit for your needs.
5. Acceptance of Small Orders
Initiate your exploration of SANZHI's superior quality by placing a small trial order. Witness firsthand why clients consistently choose us for unparalleled performance and reliability. Experience the difference with our exceptional product offerings.
6. Swift and Reliable Delivery
Experience the advantage of our swift and reliable delivery services, paired with premium product quality. We guarantee timely arrivals, ensuring that your operations remain seamlessly functional, keeping you ahead in the competitive market landscape.
7. Comprehensive Authorization
Empower your sales strategy with our comprehensive authorization for valued distributors. Market SANZHI brand products with complete confidence, leveraging our brand's esteemed reputation to enhance your sales performance and credibility in the industry.
Sanzhi (Henan) Compressor Co., Ltd. shines as a symbol of outstanding innovation in manufacturing, celebrated for its top-tier screw air compressors and vacuum pumps. With over ten years of unwavering commitment, Sanzhi boasts a comprehensive range of products including standard and low-pressure screw air compressors, advanced permanent magnet frequency conversion models, two-stage compression units, specialized laser cutting compressors, and adaptable mobile screw compressors. Our products come in both single and double-tank configurations, available in electric and diesel options, and are enhanced by our pioneering screw vacuum pumps.
Our production processes are a testament to efficiency and cutting-edge technology, highlighted by our state-of-the-art multi-air compressor assembly lines. Backed by a proficient team exceeding 50 members, we perpetually refine our ERP-driven management systems, ensuring remarkable reductions in lead times and the prompt delivery of high-quality products.
Upholding the pinnacle of standards, our factory is proudly ISO9001 certified, underscoring our steadfast dedication to exemplary quality management. We enforce rigorous quality control protocols, ensuring each machine undergoes exhaustive material inspections, detailed production evaluations, and comprehensive pre-delivery assessments before leaving our premises.
Our customer-centric service philosophy is unparalleled. Our pre-sales experts offer professional advice to assist you in selecting the perfect air equipment, with a wide array of customization options for both appearance and configuration. We specialize in crafting bespoke OEM products tailored specifically to dealer needs. Our seasoned after-sales team ensures quick and effective responses to all customer inquiries and requirements.
At Sanzhi (Henan) Compressor Co., Ltd., we remain steadfast in delivering high-performance, dependable products that cultivate lasting customer partnerships. Our streamlined delivery timelines, superior machines, and competitive pricing guarantee that you receive outstanding compressed air solutions every time.
Strategically positioned in Xinzheng City, Henan Province, China, our factory offers convenient access. We provide complimentary transport from Xinzheng International Airport to our facility, a swift 30-kilometer journey that takes roughly one hour. We eagerly invite you to visit us!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a highly specialized manufacturer with over a decade of expertise, focusing exclusively on screw air compressors.
Q2. How do you control quality?
A: 1. Rigorous inspection of all raw materials.
2. Strict regulation of installation procedures.
3. Each machine is subjected to a minimum of 5 hours of continuous testing prior to shipment.
Q3. What information must I provide to get the suitable machine?
1. The required air delivery capacity (Unit: CFM or m³/Min).
2. The necessary working pressure (Unit: PSI, Bar, or Mpa).
3. The voltage and frequency of your location (V/Hz).
4. Any additional accessories needed, such as an air tank, filters, or air dryers.
Provide us this information, and we will customize a tailored solution for you!
Q4. What is the general unit conversion?
1Bar = 0.1Mpa = 14.5PSI
1m³/min = 35.32cfm
1KW = 1.34HP
Q5. What is the available voltage for air compressors?
A: Sanzhi offers compressors in a range of voltages: 380V/50Hz/3P, 400V/50Hz/3P, 415V/50Hz/3P, 220V/60Hz/3P, 440V/60Hz/3P, and can customize according to your specific needs.
Q6. How long is the delivery time?
A: For standard voltage specifications, we are delighted to promise an incredibly rapid delivery timeline of just 15 working days from the moment of order confirmation. For those requiring tailor-made solutions with non-standard voltage specifications, our expert sales team stands ready to offer precise and bespoke delivery schedules, perfectly aligned with your exclusive requirements.
Q7. What's the payment term?
A: To facilitate a seamless and hassle-free transaction, our payment terms are structured with clarity: an initial 30% T/T deposit is required, followed by an additional 40% T/T payment before shipment, and a final 30% T/T upon receiving the B/L copy. Offering the flexibility of payments in both USD and RMB, we cater to your specific preferences.
Q8. How about your warranty?
A: Our comprehensive warranty program is meticulously crafted to offer you peace of mind. We provide a one-year warranty for the entire machine, with an extended two-year warranty covering the screw air compressor. This ensures thorough coverage for all non-consumable components.
Q9. What about the maintenance?
A: We recommend an initial maintenance check-up after the first 500 hours of operation. Following this, routine maintenance should be performed every 2000-3000 hours, depending on specific working conditions, to preserve optimal performance and ensure longevity.
Q10. Can machines be run in high-temperature environment?
A: Absolutely! Our machines are expertly designed to maintain peak performance even in high-temperature settings. They operate efficiently within a temperature range of -20° to 45° (-4ºF to 113ºF), ensuring consistent and reliable functionality.
Q11. Do you offer OEM service?
A: Yes, we are proud to offer a broad spectrum of OEM and ODM services. Our committed design team is dedicated to delivering innovative and flexible solutions that are precisely customized to meet your unique specifications.
Q12. How long could your air compressor be used?
A: Our air compressors are crafted to provide exceptional durability, featuring an impressive lifespan that exceeds 10 years. This ensures long-term reliability and peace of mind for your operational needs.
Q13. Will you provide some spare parts for the machines?
A: Absolutely, we assure the availability of crucial spare parts for all our machinery, enabling efficient maintenance and prompt repairs to ensure your operations continue running seamlessly.
Q14. How about your after-sales service?
A: Our extensive after-sales service is thoughtfully designed to cater to your needs, providing comprehensive online guidance for installation and commissioning. For added convenience, we can arrange for engineers to offer on-site training and installation support, ensuring a smooth and efficient operation from the outset.
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