Introducing the groundbreaking Low-Pressure Compressor by Sanzhi (Henan) Compressor Co., Ltd.! This innovative Two-Stage Compression Permanent Magnet Variable Frequency Drive Screw Air Compressor has been meticulously engineered to set new standards of industrial excellence. Available in an extensive range of power options-including 15KW, 22KW, 30KW, 37KW, 45KW, 55KW, 75KW, 90KW, 110KW, 132KW, 160KW, 185KW, 200KW, and 250KW-this versatile powerhouse ensures unmatched efficiency and reliability. Elevate your operations with this state-of-the-art solution, expertly crafted to meet the diverse and demanding needs of today's dynamic industries.
Internal Structure Frontside
Internal Structure Backside
Working Principle
In an optimal air compression environment, the energy required for single-stage pressure transfer equals the combined energy for multi-stage compression. However, real-world factors such as coupling power losses, bearing friction, and fluid viscosity cooling lead to higher operational power needs. By reducing the compression ratio per stage, these inefficiencies are minimized. Consequently, the overall power consumption for multi-stage compression is lower than single-stage compression.
Our state-of-the-art two-stage screw air compressor features a highly sophisticated twin-stage rotary screw mechanism. This revolutionary system includes an active screw in each stage driving a passive screw via a robust external power transmission setup. The first stage employs a low-pressure screw group, while the second stage utilizes a high-pressure screw group. Each screw is meticulously encased within a sealing air film. During operation, the gas undergoes a tri-phase process-suction, pressurization, and exhaust-ensuring unparalleled compression efficiency.
First Stage Compression: In the initial stage of our two-stage screw air compressor, gas is efficiently compressed using a low-pressure screw group. The gas is initially drawn into the compression chamber via the suction valve, where the high-speed rotation of the screw rotor compresses it before being transferred seamlessly to the second stage.
Second Stage Compression: In the second stage screw group, gas is further compressed within a more confined screw space, achieving higher temperatures and pressures. The process culminates as the exhaust valve opens, releasing the high-pressure gases from the system and completing the compression cycle.
Natural air is initially drawn through the air filter into the first compression stage, where it merges with a small quantity of lubricating oil. This mixture is compressed to an intermediate pressure. Subsequently, the gas moves into a cooling channel, where it interacts with a significant amount of oil mist, dramatically lowering its temperature. The cooled, compressed gas then advances to the second-stage rotor for its final compression to the ultimate exhaust pressure. The fully compressed gas then exits the system through the exhaust valve, completing the compression cycle.
1) High efficiency of PM motor:Experience the pinnacle of efficiency with our cutting-edge permanent magnet motor. Offering a significantly wider constant torque and weak magnetic range, it boosts efficiency by an impressive 20-30% over traditional motors. Remarkably, it maintains exceptional efficiency even when operating away from the rated frequency, ensuring optimal performance under all conditions.
2) Two-stage compression unique air end:Our groundbreaking two-stage compression screw machine features an ingeniously designed air end. By integrating the first and second-stage compression rotors within a singular casing and driving them directly by gears, each rotor achieves optimal linear speed, maximizing compression efficiency to unparalleled levels.
3) Integrated frequency converter: Equipped with China's leading frequency system, this air compressor provides an expansive speed regulation range with high precision. Users can finely tune the frequency to match actual gas demands, resulting in substantial energy savings and heightened operational efficiency.
4) Reduce internal leakage:Our two-stage compression technology effectively lowers the compression ratio for each stage, thereby reducing internal leakage from high-pressure to low-pressure ends and significantly boosting volumetric efficiency.
5) Variable frequency start and the soft startof the motor are seamlessly executed, dramatically diminishing the impact on power grid equipment and preventing potential damage to electrical components.
6) Reduce energy consumption: Our advanced frequency conversion system operates efficiently from 25% to 100%, a notable enhancement over the conventional 50% to 100% range. Compared to fixed-speed air compressors, it achieves energy savings exceeding 30%. Even when benchmarked against standard variable frequency compressors, it delivers approximately 5% greater energy efficiency, with substantial savings for systems with variable gas demands.
7) No transmission loss: The permanent magnet motor and compressor are designed with an integrated shaft direct connection structure. This compact design eliminates couplings and other transmission parts, achieving an unmatched 100% transmission efficiency.
8) Air cooling method: Our innovative air cooling system provides exceptional cooling performance, significantly lowering the temperature of compressed air. This near-isothermal compression minimizes pressure loss between stages, reducing the compression ratio and greatly enhancing overall efficiency.
9)Smart Touch Controller:Our sophisticated built-in intelligence requires minimal manual intervention. Featuring a high-precision color electronic screen, it offers clear graphical displays, maintenance information, fault alarms, and safety shutdown alerts, ensuring seamless and intuitive operation.
10)Special Type Intake Valve:The automatically controlled intake valve ensures smooth engine fuel injection and lubricating oil circulation.
Ultra-low oil circuit loss significantly boosts overall efficiency.
The normally open solenoid valve automatically closes during emergency stops to prevent oil injection, guaranteeing system safety.
11)Excellent Air Filter:Our premium air filter offers superior air purification with a three-stage filtration system. It efficiently removes steam and dust, ensuring exceptionally clean air and compliance with stringent emission standards.
12)High-Quality Soundproof Cotton:Our compact noise reduction housing, combined with high-quality soundproof cotton, minimizes operational vibration and dramatically improves noise reduction, creating a quieter and more efficient workspace.
13) Motor maintenance-free:Our permanent magnet motor, designed without internal bearings, eliminates the need for motor bearing maintenance and replacement, reducing long-term maintenance costs and enhancing reliability.
14) Noise reduction:Experience unparalleled tranquility with the state-of-the-art two-stage compression technology crafted by Sanzhi (Henan) Compressor Co., Ltd. This groundbreaking system significantly lowers the compression ratio, resulting in a dramatic reduction of operational noise, particularly during unloading. Revel in a quieter, more efficient working environment and boost your productivity with the Sanzhi 90kw Powerful Two-Stage Screw Air Compressor for Heavy Duty Industrial Applications. Elevate your industrial operations with Sanzhi's superior engineering and innovative solutions.
15) Effortless Maintenance and Service:Our innovative two-stage compressor unit, designed by Sanzhi (Henan) Compressor Co., Ltd., retains the familiar structure and systems of a single-stage compressor, with the exception of the screw air end. This ensures that maintenance and service remain straightforward and user-friendly. Enjoy hassle-free upkeep and consistent, optimal performance with the Sanzhi 90kw Powerful Two-Stage Screw Air Compressor for Heavy Duty Industrial Applications. Trust in Sanzhi for easy maintenance and exceptional results in your industrial operations.
| 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
Discover unparalleled value with Sanzhi (Henan) Compressor Co., Ltd. Gain the edge with factory-direct pricing that guarantees your market position remains unrivaled.
2. Direct Transactions
Enjoy streamlined efficiency and reliability with direct factory-to-you transactions. Our approach ensures maximum savings and consistent, dependable service.
3. OEM & ODM Services
Leverage our advanced production and management capabilities. We offer personalized OEM and ODM services designed to meet your unique requirements with precision.
4. Customized Solutions
Excel with our expertise in non-standard and export orders. We adeptly handle specific voltage, power, and pressure needs, crafting bespoke solutions that align perfectly with your specifications.
5. Small Order Acceptance
Start your partnership with a trial order and experience our exceptional product quality. Ensure complete satisfaction before scaling your investment.
6. Rapid Delivery
Experience the confidence of swift and efficient delivery. We prioritize timely delivery to keep your operations running smoothly.
7. Comprehensive Authorization
Enhance your distribution capabilities with our extensive authorization certificates. Confidently market SANZHI brand products, backed by thorough certification.
Sanzhi (Henan) Compressor Co., Ltd is a distinguished and reputable manufacturer specializing in cutting-edge screw air compressors and screw vacuum pumps. With over a decade of unparalleled industry expertise, we present a versatile and comprehensive product lineup: normal and low-pressure screw air compressors, permanent magnet frequency conversion screw air compressors, two-stage compression screw air compressors, screw air compressors for laser cutting, single-tank and double-tank mobile screw air compressors, and electric and diesel mobile screw air compressors. We also provide state-of-the-art screw vacuum pumps.
Our state-of-the-art production facility features advanced multi-air compressor assembly lines, ensuring exceptional efficiency and precision. Supported by a dedicated team of over 50 highly skilled employees, we continuously enhance our management systems, such as ERP, significantly reducing lead times and guaranteeing the swift delivery of premier quality products.
Our meticulously designed management systems uphold the highest quality standards. Proudly certified under the ISO9001 quality management system, we adhere to rigorous quality control protocols. Each machine undergoes comprehensive inspections at various stages, from material and production checks to pre-delivery evaluations, ensuring unmatched product reliability and excellence.
Our exemplary customer service begins with a pre-sales team offering expert guidance for selecting the ideal air equipment tailored to diverse facilities. We provide extensive customization options, including appearance and configuration, and create bespoke products to meet specific dealer demands through our OEM services. Our professional sales and service team is always on standby to deliver prompt and efficient post-sales support, ensuring your needs are swiftly addressed.
At Sanzhi (Henan) Compressor Co., Ltd, we are unwavering in our commitment to delivering superior, reliable, and stable products. Dedicated to forging long-term client relationships, we promise efficient delivery, high-quality machinery, and competitive pricing, ensuring you receive the optimal compressed air solution for your requirements.
Located in the picturesque Xinzheng City, Henan Province, China, our factory is conveniently situated just 30 kilometers from Xinzheng International Airport, approximately an hour's drive away. We warmly invite you to visit our facility and experience our exceptional offerings firsthand!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a distinguished manufacturer specializing in screw air compressors, proudly boasting over a decade of industry expertise.
Q2. How do you control quality?
A: 1. Our raw materials undergo rigorous inspection to ensure the highest quality.
2. The meticulous installation process is stringently monitored.
3. Every machine is subjected to a minimum of 5 continuous hours of testing before dispatch to ensure optimal performance.
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.
Share this information with us, and we will tailor a perfect 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 air compressor?
A: Sanzhi (Henan) Compressor Co., Ltd. offers an extensive range of voltage options tailored to global standards, including 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p. We also specialize in providing customized electrical solutions to precisely meet your unique requirements.
Q6. How long is the delivery time?
A: For standard voltage units, we ensure a swift delivery within 15 working days post order confirmation. If you require non-standard voltage units, please connect with our dedicated sales team for accurate delivery schedules.
Q7. What's the payment term?
A: Our payment terms are designed for your ease: 30% T/T as an advance deposit, 40% T/T before dispatch, and the remaining 30% T/T upon receipt of the B/L copy. Payments can be made in either USD or RMB.
Q8. How about your warranty?
A: Sanzhi offers a comprehensive warranty: one year for the entire machine and two years for the screw air compressor, excluding consumable spare parts. This ensures your investment is well-protected.
Q9. What about the maintenance?
A: Initial maintenance is vital and should be performed after 500 operating hours. Subsequent maintenance should occur every 2000-3000 hours, based on the specific working conditions.
Q10. Can machines be run in high-temperature environments?
A: Absolutely! Our machines are engineered for optimal performance even in extreme temperatures, efficiently operating within a range of -20° to 45° (-4ºF to 113ºF).
Q11. Do you offer OEM service?
A: Yes, we excel in both OEM and ODM services. Our expert design team is prepared to bring your custom orders to fruition, delivering bespoke solutions that perfectly align with your specifications.
Q12. How long could your air compressors be used?
A: Built for longevity, our air compressors feature a remarkable lifespan, typically delivering over 10 years of reliable performance.
Q13. Will you provide some spare parts for the machines?
A: Absolutely, we provide a comprehensive range of high-quality spare parts to ensure your machines operate seamlessly and maintain peak performance over an extended period.
Q14. How about your after-sales service?
A: We pride ourselves on exceptional after-sales support, offering detailed online installation and commissioning guidance. Additionally, we can dispatch skilled engineers for hands-on training and meticulous installation assistance as necessary.
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