Introducing the revolutionary Low-Pressure Compressor by Sanzhi (Henan) Compressor Co., Ltd.! This cutting-edge Two-Stage Compression Permanent Magnet Variable Frequency Drive Screw Air Compressor is crafted to redefine industrial excellence. Designed for maximum performance, it offers an impressive selection of power options ranging from 15KW to 250KW, including 15KW, 22KW, 30KW, 37KW, 45KW, 55KW, 75KW, 90KW, 110KW, 132KW, 160KW, 185KW, 200KW, and 250KW. This adaptable powerhouse guarantees unparalleled efficiency and dependability. Elevate your operations with this advanced solution, meticulously designed to meet the diverse and exacting requirements of today's dynamic industrial landscape.
Internal Structure Frontside
Internal Structure Backside
Working Principle
In an optimal air compression environment, the energy needed for single-stage pressure transfer equals the combined energy for multi-stage compression. However, real-world factors like 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. Thus, the overall power consumption for multi-stage compression is lower than single-stage compression.
Our state-of-the-art two-stage screw air compressor boasts 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 uses 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, the 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 it is transferred seamlessly to the second stage.
Second Stage Compression: In the second stage screw group, the 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 unparalleled efficiency with our cutting-edge permanent magnet motor. Its expansive constant torque and weak magnetic ranges boost efficiency by 20-30% over traditional motors. Even beyond rated frequencies, it maintains peak efficiency for superior performance.
2) Unique Two-Stage Compression Air End:Our groundbreaking two-stage compression screw machine features a uniquely designed air end. This design integrates both the first and second-stage compression rotors into a single casing, driven by gears to optimize linear speed and maximize compression efficiency.
3) Integrated Frequency Converter:Equipped with China's top frequency system, our compressor offers extensive speed regulation and high precision. Users can adjust the frequency based on actual gas demand, achieving significant energy savings and enhanced operational efficiency.
4) Reduced Internal Leakage:By employing two-stage compression technology, we cut the compression ratio for each stage. This minimizes internal leakage from high-pressure to low-pressure ends, significantly boosting volumetric efficiency.
5) Variable Frequency Start and Soft StartOur motor's variable frequency start and soft start greatly reduce the impact on power grid equipment and protect electrical components from damage.
6) Reduced Energy Consumption:Our frequency conversion system operates from 25% to 100%, a substantial leap from the standard 50% to 100% range. Compared to fixed-speed compressors, it saves over 30% energy. Against standard variable frequency compressors, it offers around 5% enhanced efficiency, especially beneficial for systems with variable gas demands.
7) No Transmission Loss:Our integrated shaft direct connection permanently links the motor and compressor, eliminating couplings and other transmission parts. This ensures a compact design and 100% transmission efficiency.
8) Superior Air Cooling Method:Our advanced air cooling method excels in reducing compressed air temperature and pressure loss, leading to near-isothermal compression and enhanced overall efficiency.
9)Smart Touch Controller:Our state-of-the-art built-in intelligence minimizes manual operation. Featuring a high-precision electronic color screen, it provides clear graphical displays, maintenance updates, fault alarms, and safety shutdown alerts for seamless operation.
10)Special Type Intake Valve:Automatically controlled openings ensure smooth engine fuel injection and lubricating oil flow.
Ultra-low oil circuit loss boosts overall efficiency.
The normally open solenoid valve automatically closes during emergencies to prevent oil injection, ensuring system safety.
11)Exceptional Air Filter:Our premium air filter offers top-tier air purification with three-stage filtration, ensuring superior air quality. It effectively removes steam and dust, meeting strict emission standards.
12)High-Quality Soundproof Cotton:Our compact noise reduction housing, combined with high-quality soundproof cotton, greatly reduces operational vibration and noise, creating a quieter, more efficient workspace.
13) Maintenance-Free Motor:Our permanent magnet motor, free of internal bearings, eliminates the need for bearing maintenance and replacement, reducing long-term 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 High Power 90kw Professional Two-Stage Screw Air Compressor for Industrial Use. Elevate your industrial operations with Sanzhi's superior engineering.
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 High Power 90kw Professional Two-Stage Screw Air Compressor for Industrial Use. Trust in Sanzhi for easy maintenance and exceptional 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
Experience unparalleled value with Sanzhi (Henan) Compressor Co., Ltd. By choosing us, you gain factory-direct pricing that ensures your market competitiveness remains unrivaled.
2. Direct Transactions
Enjoy streamlined cost-efficiency and the trustworthiness of direct transactions. Our products come straight from the factory to you, guaranteeing maximum savings and reliable service.
3. OEM & ODM Services
Leverage our powerful production and management facilities. We provide bespoke OEM and ODM services tailored to your exact needs, ensuring your unique requirements are impeccably met.
4. Customized Solutions
We specialize in fulfilling non-standard and export orders, skillfully accommodating specific voltage, power, and pressure specifications. Share your custom needs, and we'll craft solutions that align perfectly with your demands.
5. Small Order Acceptance
Start your partnership with a small trial order and experience the exceptional quality of our products. Ensure your satisfaction before scaling your investment.
6. Rapid Delivery
Enjoy the confidence of our prompt and efficient delivery services. We prioritize delivering your premium products swiftly to maintain the seamless flow of your operations.
7. Comprehensive Authorization
Enhance your distribution potential with our extensive authorization certificates. Market and sell SANZHI brand products with confidence, 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. Boasting over a decade of unparalleled industry expertise, we present a versatile and comprehensive product lineup that includes normal pressure and low-pressure screw air compressors, permanent magnet frequency conversion screw air compressors, two-stage compression screw air compressors, screw air compressors specifically designed for laser cutting, and both single-tank and double-tank mobile screw air compressors. Additionally, we provide electric and diesel mobile screw air compressors, as well as 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, to significantly reduce lead times and guarantee the swift delivery of premier quality products.
Our meticulously designed management systems are dedicated to upholding the highest quality standards. Proudly certified under the ISO9001 quality management system, we adhere to rigorous quality control protocols. Each machine is subjected to 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 that offers 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 relationships with our clients, 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. proudly offers a wide array of voltage options tailored to meet global demands, including 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p. Moreover, we excel in delivering customized solutions to precisely align with your unique electrical requirements, ensuring seamless integration and optimal performance.
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 your needs include non-standard voltage requirements, please connect with our dedicated sales team for accurate delivery timelines, tailored to your specific needs.
Q7. What's the payment term?
A: Our flexible payment terms are designed for your ease: 30% T/T upfront, 40% T/T prior to shipment, and the remaining 30% T/T upon receipt of the B/L copy. Payments are accepted in both USD and RMB, offering you financial convenience.
Q8. How about your warranty?
A: Proudly standing behind our products, Sanzhi offers a robust warranty: one year for the entire machine and two years specifically for the screw air compressor, excluding consumable spare parts, ensuring your investment is well-protected.
Q9. What about the maintenance?
A: Initial maintenance is critical and should be performed after the first 500 operating hours. Going forward, maintenance should occur every 2000-3000 hours, depending on the working environment, to ensure optimal performance.
Q10. Can machines be run in high-temperature environment?
A: Absolutely! Our machines are meticulously engineered to deliver high performance even in extreme temperatures, efficiently operating within a remarkable range of -20° to 45° (-4ºF to 113ºF).
Q11. Do you offer OEM service?
A: Indeed, we specialize in both OEM and ODM services. Our proficient design team is adept at turning your custom orders into reality, providing bespoke solutions that perfectly meet your specifications.
Q12. How long could your air compressor be used?
A: Expertly crafted for longevity, our air compressors are known for their exceptional durability, typically providing over 10 years of reliable service.
Q13. Will you provide some spare parts for the machines?
A: Absolutely, we offer a comprehensive range of premium spare parts to ensure your machines continue to operate smoothly and maintain peak performance over an extended period.
Q14. How about your after-sales service?
A: We are committed to delivering exceptional after-sales support, which includes detailed online installation and commissioning guidance. Additionally, we can dispatch skilled engineers to provide hands-on training and meticulous installation assistance as required.
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