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 has been masterfully engineered to redefine industrial excellence. This exceptional compressor is available in a comprehensive range of power options that are tailored to suit your specific needs: 15KW, 22KW, 30KW, 37KW, 45KW, 55KW, 75KW, 90KW, 110KW, 132KW, 160KW, 185KW, 200KW, and 250KW. Each variant is a testament to our commitment to delivering unparalleled efficiency and reliability. Elevate your operations to new heights with this state-of-the-art solution. It has been meticulously crafted to meet the diverse and demanding requirements of today's modern industries, ensuring that your business remains at the forefront of innovation and success.
Internal Structure Frontside
Internal Structure Backside
Working Principle
In an ideal air compression scenario, the energy needed for single-stage pressure transmission matches the combined energy demands of multi-stage compression. In reality, factors such as coupling power losses, bearing friction, and the cooling effects due to fluid viscosity result in higher operational power needs. By reducing the compression ratio at each stage, these inefficiencies are minimized, thus making multi-stage compression more energy-efficient overall compared to single-stage compression.
Our state-of-the-art two-stage screw air compressor boasts a highly sophisticated twin-stage rotary screw mechanism. This innovative system features an active screw at each stage, driving a passive screw through a robust external power transmission setup. Commencing with a low-pressure screw group in the first stage and proceeding to a high-pressure screw group in the second stage, each screw is delicately enveloped in a sealing air film. Throughout the operation, the gas undergoes a comprehensive tri-phase process-suction, pressurization, and exhaust-leading to a compression efficiency that is truly second to none.
First Stage Compression: During the initial stage of our two-stage screw air compressor, the gas is expertly compressed using a low-pressure screw group. The gas is dexterously drawn into the compression chamber via the suction valve, where the high-speed rotation of the screw rotor ensures its compression before seamlessly transferring it to the second stage.
Second Stage Compression: In the advanced second stage screw group, the gas undergoes further compression within a more confined screw space, achieving higher temperatures and pressures. The process concludes as the exhaust valve opens, allowing the release of high-pressure gases from the system, thereby completing the compression cycle with precision.
Natural air is initially drawn through the air filter into the first compression stage, where it integrates with a small amount of lubricating oil. This mixture is compressed to an intermediate pressure level. Following this, the gas enters a cooling channel and interacts with a substantial amount of oil mist, significantly reducing its temperature. The cooled and compressed gas then advances to the second-stage rotor for final compression to the ultimate exhaust pressure. Once fully compressed, the gas exits the system through the exhaust valve, marking the completion of the compression cycle.
1) High efficiency of PM motor:Discover the future of energy efficiency with our cutting-edge permanent magnet motor. Offering a significantly expanded torque range, this motor delivers an astounding 20-30% efficiency improvement over traditional motors. Its brilliance shines even when operating away from rated frequencies, consistently providing top-tier performance.
2) Two-stage compression unique air end:Introducing a paradigm shift in compression technology-our two-stage compression screw machine. The ingeniously crafted air end hosts first and second-stage compression rotors within a singular casing, propelled directly by gears. This design ensures each rotor achieves peak linear speed, optimizing the entire compression process and driving efficiency to new heights.
3) Integrated frequency converter: With China's leading frequency conversion system at its core, our air compressor offers unparalleled speed regulation and precision. Tailor the frequency to your exact gas needs, unlocking substantial energy savings and operational excellence with effortless ease.
4) Reduce internal leakage:Our innovative two-stage compression technology ingeniously lowers the compression ratio for each stage. This strategic reduction minimizes internal leakage from high to low pressure ends, significantly boosting volumetric efficiency and ensuring optimal operation.
5) Variable frequency start and soft startof the motor provide a gentle initiation, drastically minimizing impact on power grid equipment and safeguarding electrical components from potential harm.
6) Reduce energy consumption: Our frequency conversion spans a remarkable 25% to 100% range, outshining conventional 50% to 100% systems. This innovation delivers over 30% energy savings compared to fixed-speed compressors and adds an extra 5% efficiency boost over standard variable frequency models, particularly in fluctuating demand scenarios.
7) No transmission loss: Our design masterpiece-the integrated shaft direct connection-melds the motor and compressor into one compact unit. Eliminating couplings and transmission parts, this architecture achieves an unsurpassed 100% transmission efficiency.
8) Air cooling method: Experience exceptional cooling performance with our advanced air cooling system, which dramatically reduces compressed air temperatures. Near-isothermal compression minimizes pressure loss and enhances efficiency by lowering the compression ratio across stages.
9)Smart Touch Controller:Our intelligent control technology features a high-precision color electronic screen, offering effortless monitoring with graphical displays, maintenance reminders, fault alerts, and safety shutdown notifications for a seamless and user-friendly experience.
10)Special Type Intake Valve:The innovative automatic valve control guarantees smooth fuel injection and lubricating oil flow, reducing oil circuit loss to enhance efficiency. In emergencies, the normally open solenoid valve closes automatically, preventing oil injections and ensuring total system safety.
Ultra-low oil circuit loss enhances overall efficiency.
The normally open solenoid valve automatically closes during emergency stops to prevent oil injection, ensuring system safety.
11)Excellent Air Filter:Our premium air filter guarantees exceptional air purification, delivering a pristine air system with its robust three-stage filtration process. It effectively eliminates steam and dust, adhering to the strictest emission standards for unrivaled air quality.
12)High-Quality Soundproof Cotton:Our state-of-the-art noise reduction design combines compact housing with high-grade soundproof cotton, dramatically cutting operational vibrations and enhancing noise reduction for a serene, efficient workspace.
13) Motor maintenance-free:Our revolutionary permanent magnet motor is designed without internal bearings, eliminating the need for maintenance or replacement. This innovation reduces long-term costs and enhances system reliability.
14) Noise reduction:Experience the epitome of serenity with Sanzhi's groundbreaking two-stage compression technology! This avant-garde system ingeniously reduces the compression ratio, resulting in an extraordinary decrease in operational noise, especially noticeable during unloading phases. Revel in a serene, highly efficient workplace environment and enhance your productivity levels with the expertly crafted Professional Industrial Screw Compressor by Sanzhi.
15) Effortless Maintenance and Service:Embrace the simplicity of upkeep with our pioneering two-stage compressor unit, which retains the familiar structure and systems of a single-stage compressor. By focusing on the exclusion of only the screw air end, we guarantee that maintenance and service are effortlessly straightforward and accessible to all. Relish in stress-free upkeep and unwavering, peak performance with Sanzhi's Professional Industrial Screw 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. Competitive Pricing
Experience unparalleled value and competitive edge by joining forces with Sanzhi (Henan) Compressor Co., Ltd. By sourcing directly from us, you unlock access to unbeatable, factory-direct pricing, securing your position as a leader in the competitive landscape.
2. Direct Transactions
Leverage the power of cost-efficiency and unyielding reliability through direct transactions. Our offerings come straight from the factory to your doorstep, ensuring you receive maximum savings and unparalleled peace of mind.
3. OEM & ODM Services
Tap into the vast potential of our comprehensive production and management expertise. We offer bespoke OEM and ODM services tailored to your exacting specifications, ensuring every unique demand is met with precision and excellence.
4. Customized Solutions
We are experts in delivering non-standard and export orders, meticulously accommodating unique voltage, power, and pressure criteria. Present your specific customization needs, and we will craft solutions that seamlessly align with your expectations.
5. Small Order Acceptance
Start your journey with us through a small trial order, experiencing firsthand the outstanding quality of our products. This ensures your complete satisfaction and confidence before you expand your order size.
6. Rapid Delivery
Revel in the assurance provided by our fast and efficient delivery services. We guarantee that your premium-quality products arrive swiftly, ensuring your operations remain seamless and unhindered.
7. Comprehensive Authorization
Boost your distribution prowess with our full authorization certifications. Market and sell SANZHI brand products with confidence, fully supported by comprehensive certification and unwavering brand trust.
Sanzhi (Henan) Compressor Co., Ltd is a prestigious and esteemed manufacturer at the forefront of innovation, specializing in state-of-the-art screw air compressors and screw vacuum pumps. Harnessing over a decade of unmatched industry prowess, we offer an expansive and diverse array of products, including standard pressure and low-pressure screw air compressors, permanent magnet frequency conversion screw air compressors, advanced two-stage compression screw air compressors, and specialized screw air compressors crafted for laser cutting. Furthermore, our lineup features both single-tank and double-tank mobile screw air compressors along with cutting-edge electric and diesel mobile screw air compressors, complemented by our revolutionary screw vacuum pumps.
Our cutting-edge production facility is equipped with the latest in multi-air compressor assembly lines, ensuring unparalleled efficiency and precision. Backed by a dedicated team of over 50 highly skilled professionals, we relentlessly refine our management systems, such as ERP, to substantially cut down lead times and ensure the prompt delivery of superior quality products.
Our meticulously crafted management systems are unwaveringly committed to maintaining the pinnacle of quality standards. Proudly accredited with the ISO9001 quality management system certification, we adhere to stringent quality control protocols. Every machine undergoes thorough inspections at multiple stages, from material and production assessments to pre-dispatch evaluations, guaranteeing unmatched product reliability and excellence.
Our exceptional customer service journey begins with a pre-sales team offering expert guidance to select the perfect air equipment tailored to various facilities. We provide a wide array of customization options, including appearance and configuration, and craft bespoke products to meet specific dealer demands through our OEM services. Our professional sales and service team is always on hand to deliver swift and efficient post-sales support, ensuring your needs are addressed with urgency and precision.
At Sanzhi (Henan) Compressor Co., Ltd, our unwavering commitment is to deliver superior, dependable, and stable products. We are devoted to cultivating long-term relationships with our clients, pledging efficient delivery, top-notch machinery, and competitive pricing. This ensures you receive the optimal compressed air solution tailored to your requirements.
Nestled in the scenic Xinzheng City, Henan Province, China, our factory enjoys a strategic location just 30 kilometers from Xinzheng International Airport, approximately an hour's drive away. We extend a warm invitation for 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 essential information with us, and we will customize 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 proudly presents a versatile selection of voltage options, including 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p. We also offer customization to perfectly align with your unique specifications.
Q6. How long is the delivery time?
A: For our standard voltage units, expect swift delivery within 15 working days following order confirmation. For bespoke requirements, our dedicated sales team is ready to assist you.
Q7. What's the payment term?
A: Our payment terms are structured as follows: 30% T/T advance, 40% T/T before shipment, with the balance of 30% T/T upon receipt of the B/L copy. We accept payments in both USD and RMB.
Q8. How about your warranty?
A: We provide an exceptional warranty package: one year for the complete machine and two years for the screw air compressor, excluding consumable spare parts.
Q9. What about the maintenance?
A: Initial maintenance should occur after 500 hours of operation. Subsequent maintenance is recommended every 2000-3000 hours, depending on the actual working conditions, to ensure optimal performance.
Q10. Can machines be run in high-temperature environment?
A: Absolutely, our machines are meticulously engineered to perform efficiently even in high-temperature settings, withstanding a working temperature range from -20° to 45° (-4ºF to 113ºF).
Q11. Do you offer OEM service?
A: Yes, we specialize in providing top-tier OEM and ODM services, empowered by our expert design team. Your bespoke orders are warmly welcomed.
Q12. How long could your air compressor be used?
A: Our air compressors boast a robust design, assuring a service life that often surpasses 10 years, ensuring durability and reliability.
Q13. Will you provide some spare parts for the machines?
A: Certainly, we offer a wide array of high-quality spare parts, ensuring seamless and efficient operation of your machinery while enhancing longevity and optimal performance.
Q14. How about your after-sales service?
A: We deliver outstanding after-sales support, which includes comprehensive online installation and commissioning guidance. Moreover, we can deploy experienced engineers for hands-on training and precise installation assistance as needed.
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