Introducing the groundbreaking Low-Pressure Compressor by Sanzhi (Henan) Compressor Co., Ltd.! This state-of-the-art Two-Stage Compression Permanent Magnet Variable Frequency Drive Screw Air Compressor is a marvel of modern engineering, poised to redefine industrial excellence. Explore a complete spectrum of power options including 15KW, 22KW, 30KW, 37KW, 45KW, 55KW, 75KW, 90KW, 110KW, 132KW, 160KW, 185KW, 200KW, and 250KW, each designed to deliver unmatched efficiency and reliability. Elevate your industrial operations with this meticulously crafted solution, tailored to meet the diverse and challenging demands of today's industries.
Internal Structure Frontside
Internal Structure Backside
Working Principle
In a perfect world of air compression, the energy needed for single-stage pressure transmission would perfectly match the combined energy demands of multi-stage compression. In reality, however, factors such as coupling power losses, bearing friction, and the cooling effects of fluid viscosity result in elevated operational power needs. By intelligently reducing the compression ratio at each stage, these inefficiencies are minimized. As a result, the total power consumption for our multi-stage compression is lower compared to that of single-stage compression, yielding a more energy-efficient process.
Our state-of-the-art two-stage screw air compressor boasts an ultra-modern twin-stage rotary screw mechanism. This revolutionary system features an active screw in each stage, which drives a passive screw via a durable 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 expertly encased within a sealing air film. During operation, the gas experiences a tri-phase process-suction, pressurization, and exhaust-ensuring unmatched compression efficiency and performance.
First Stage Compression: In the initial stage of our exceptional two-stage screw air compressor, the gas is adeptly compressed using a low-pressure screw group. The process begins with the gas being drawn into the compression chamber through the suction valve, where the high-speed rotation of the screw rotor dynamically compresses it before effortlessly transferring it to the second stage.
Second Stage Compression: In the refined second stage screw group, the gas undergoes further compression within a more confined screw space, achieving even higher temperatures and pressures. The process reaches its peak as the exhaust valve opens, liberating the high-pressure gases and completing the efficient compression cycle.
Natural air is initially drawn through the air filter into the first compression stage, where it blends with a small quantity of lubricating oil. This mixture is then compressed to an intermediate pressure. Following this, the gas moves into a cooling channel, where it interacts with a substantial amount of oil mist, significantly reducing its temperature. The cooled, compressed gas then proceeds to the second-stage rotor for its final compression to the ultimate exhaust pressure. Once fully compressed, the gas exits the system through the exhaust valve, marking the completion of the highly efficient compression cycle.
1) High efficiency of PM motor:Unlock a new era of efficiency with our cutting-edge permanent magnet motor. This marvel of engineering offers an extensive constant torque and weak magnetic range, propelling its efficiency 20-30% beyond traditional motors. It maintains exceptional performance, even at varied frequencies, ensuring top-tier efficiency without compromise.
2) Two-stage compression unique air end:Our groundbreaking two-stage compression screw machine features a uniquely engineered air end that combines the first and second-stage compression rotors within one robust casing. Driven by gears, each rotor achieves ideal linear speed, maximizing compression efficiency to unprecedented levels.
3) Integrated frequency converter: Outfitted with China's leading frequency technology, this air compressor showcases a broad speed regulation range with high precision. Users can finely tune the frequency to match real-time gas needs, achieving remarkable energy savings and operational excellence.
4) Reduce internal leakage:By utilizing pioneering two-stage compression technology, we lower the compression ratio per stage, thereby significantly reducing internal leakage from high to low-pressure ends and greatly boosting volumetric efficiency.
5) Variable frequency start and the soft startof the motor are seamlessly executed, greatly lessening the impact on power grid infrastructure and safeguarding electrical components against potential harm.
6) Reduce energy consumption: Operating flexibly from 25% to 100%, our frequency conversion offers substantial improvements over standard ranges of 50% to 100%. Enjoy over 30% energy savings compared to fixed-speed compressors and an additional 5% efficiency over typical variable frequency models, especially in systems with fluctuating demands.
7) No transmission loss: Featuring an innovative integrated shaft direct connection, the permanent magnet motor and compressor ensure a compact design with zero couplings or transmission parts, achieving a flawless 100% transmission efficiency.
8) Air cooling method: Our advanced air cooling technique excels in performance, effectively lowering compressed air temperatures. This almost isothermal compression reduces interstage pressure loss, cutting the compression ratio and enhancing overall compressor efficiency.
9)Smart Touch Controller: Our cutting-edge built-in intelligence minimizes manual intervention. The high-precision color electronic display provides crystal-clear graphics, comprehensive maintenance info, timely fault alarms, and safety shutdown notifications for uninterrupted operation.
10)Special Type Intake Valve:The automatically controlled opening facilitates seamless engine fuel injection and lubricating oil circulation, enhancing system efficiency.
The ultra-low oil circuit loss elevates overall efficiency, while the normally open solenoid valve closes during emergencies to prevent oil injection, prioritizing system safety.
The normally open solenoid valve automatically closes during emergency stops to prevent oil injection, ensuring system safety.
11)Excellent Air Filter:Our superior air filter excels in air purification, delivering a pristine air system through its three-stage filtration for unmatched air quality. It effectively eradicates steam and dust, adhering to the highest emission standards.
12)High-Quality Soundproof Cotton:Our expertly designed noise reduction housing, along with premium soundproof cotton, minimizes vibrations and significantly reduces noise, creating a quieter and more productive working environment.
13) Motor maintenance-free:Our permanent magnet motor, devoid of internal bearings, completely eliminates the necessity for motor bearing maintenance and replacement, slashing long-term maintenance expenses and boosting reliability.
14) Noise reduction:Immerse yourself in an oasis of peace and efficiency with our state-of-the-art two-stage compression technology. This pioneering system is designed to significantly reduce the compression ratio, thereby dramatically lowering operational noise levels, particularly noticeable during unloading processes. Revel in a quieter, more efficient workspace that boosts your productivity with the Professional Industrial Screw Compressor by Sanzhi. Transform your working environment into a sanctuary of calm and efficiency.
15) Effortless Maintenance and Service:Our revolutionary two-stage compressor unit retains the familiar and trusted structure and systems of a single-stage compressor. By simply excluding the screw air end, we ensure that maintenance and service remain remarkably straightforward and user-friendly for all operators. Experience the joy of hassle-free upkeep, guaranteeing consistent and optimal performance with Sanzhi's Professional Industrial Screw Compressor. Maintain your operations seamlessly and enjoy peace of mind with every use.
| 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 the exceptional value that comes from choosing Sanzhi (Henan) Compressor Co., Ltd. By sourcing directly from us, you unlock access to our unbeatable factory-direct prices. This strategic advantage ensures you remain a leader in the competitive market, combining superior quality with cost-effectiveness.
2. Direct Transactions
Maximize your savings and gain peace of mind through our direct transaction model. All products are supplied straight from our factory to your doorstep, ensuring you benefit from direct cost-efficiency and reliability.
3. OEM & ODM Services
Tap into the vast potential of our world-class production and management expertise. We offer bespoke OEM and ODM services, tailored to your exact specifications, ensuring that your unique requirements are fully met and perfectly realized.
4. Customized Solutions
Our specialty lies in delivering solutions for non-standard and export orders, customizing voltage, power, and pressure to your precise needs. Share your customization requests with us, and we will provide solutions that are tailored to seamlessly fit your specifications.
5. Small Order Acceptance
Start your partnership journey with us by placing a small trial order. Witness firsthand the superior quality of our products, ensuring your utmost satisfaction before expanding your order volume.
6. Rapid Delivery
Benefit from the reassurance provided by our speedy and dependable delivery services. We guarantee timely delivery of high-quality products, ensuring your operational workflow remains smooth and uninterrupted.
7. Comprehensive Authorization
Amplify your distribution power with our complete authorization certificates. Market and sell SANZHI brand products with confidence, fully backed by our comprehensive certification credentials, enhancing your credibility and business reach.
Sanzhi (Henan) Compressor Co., Ltd stands as a beacon of innovation and excellence, a renowned manufacturer dedicated to the production of state-of-the-art screw air compressors and screw vacuum pumps. With over ten years of unrivaled industry experience, we proudly present an extensive and adaptable product range. Our selection encompasses normal and low-pressure screw air compressors, permanent magnet frequency conversion screw air compressors, and two-stage compression screw air compressors. We also offer specialized screw air compressors crafted for laser cutting, along with single-tank and double-tank mobile screw air compressors. Our offerings include electric and diesel mobile screw air compressors, complemented by our cutting-edge screw vacuum pumps.
Our ultra-modern production facility is equipped with advanced multi-air compressor assembly lines that ensure remarkable efficiency and precision. Backed by a dedicated team of over 50 expert professionals, we continually refine our management systems, like ERP, drastically reducing lead times to guarantee the rapid delivery of top-tier products.
Our precisely crafted management systems are committed to maintaining the highest quality standards. Holding the prestigious ISO9001 quality management certification, we implement stringent quality control measures. Each machine undergoes thorough inspections at every stage, from material and production checks to pre-delivery assessments, ensuring unmatched reliability and superior performance.
Our outstanding customer service starts with an expert pre-sales team dedicated to guiding you in selecting the perfect air equipment to suit various facilities. We provide a vast array of customization options, including appearance and configuration, and craft tailored products to meet specific dealer requirements through our OEM services. Our professional sales and service team remains ready to deliver swift, efficient post-sales support, promptly addressing your every need.
At Sanzhi (Henan) Compressor Co., Ltd, we are steadfast in our commitment to delivering superior, reliable, and stable products. We strive to build lasting partnerships with our clients by assuring swift delivery, top-notch machinery, and competitive pricing, ensuring you receive the best compressed air solution tailored to your specific needs.
Nestled in the scenic expanse of Xinzheng City, Henan Province, China, our factory enjoys a prime location just 30 kilometers from Xinzheng International Airport, a mere hour's drive away. We extend a warm invitation to visit our facility and experience our outstanding offerings in person!
FAQ
Q1. Are you a trading company or manufacturer?
A: We proudly affirm our status as a distinguished manufacturer specializing in screw air compressors, with more than a decade of industry expertise.
Q2. How do you control quality?
A: 1. We rigorously inspect all raw materials to ensure the utmost quality.
2. Our installation process is meticulously monitored to maintain exacting standards.
3. Every machine undergoes a minimum of 5 hours of continuous testing before dispatch, ensuring 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.
Provide us with this information, and we'll tailor a perfect solution just 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 array of voltage options, including 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p. Tailored customization is available to perfectly align with your unique specifications.
Q6. How long is the delivery time?
A: For units with standard voltage settings, anticipate delivery within a swift 15 working days following order confirmation. For bespoke requirements, our dedicated sales team is ready to assist.
Q7. What's the payment term?
A: Our payment terms are structured as follows: a 30% T/T prepayment, 40% T/T prior to shipment, and the final 30% T/T upon receipt of the B/L copy. Transactions can be conducted in either USD or RMB.
Q8. How about your warranty?
A: We proudly offer a comprehensive warranty, covering one full year for the entire machine and an extended two-year warranty for the screw air compressor, excluding consumable parts.
Q9. What about the maintenance?
A: Initial maintenance is recommended after 500 operational hours. Thereafter, maintenance should be scheduled every 2000-3000 hours, tailored to the specific working conditions.
Q10. Can machines be run in high-temperature environment?
A: Certainly! Our machines are engineered to perform remarkably even in high-temperature environments, boasting a robust operational temperature range from -20° to 45° (-4ºF to 113ºF).
Q11. Do you offer OEM service?
A: Yes, we specialize in OEM & ODM services, supported by our adept design team. We warmly welcome your custom orders, ensuring precision and satisfaction.
Q12. How long could your air compressor be used?
A: Our air compressors are meticulously crafted for exceptional durability, with a typical service life that often surpasses 10 years.
Q13. Will you provide some spare parts for the machines?
A: Absolutely, we supply a broad range of high-quality spare parts to ensure your machinery operates smoothly, delivering prolonged efficiency and optimal performance.
Q14. How about your after-sales service?
A: Our after-sales service is unparalleled, providing comprehensive online installation and commissioning support. Additionally, we can dispatch skilled engineers to offer hands-on training and detailed installation assistance if needed.
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