Introducing the revolutionary Low-Pressure Compressor from Sanzhi (Henan) Compressor Co., Ltd.! This pioneering Two-Stage Compression Permanent Magnet Variable Frequency Drive Screw Air Compressor is a marvel of modern engineering, crafted to redefine industrial standards. With a broad spectrum of power options, 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 cutting-edge solution, masterfully engineered to fulfill the diverse and rigorous demands of today's ever-evolving industries.
Internal Structure Frontside
Internal Structure Backside
Working Principle
In an optimal air compression environment, the energy required for single-stage pressure transfer is equivalent to the combined energy needed for multi-stage compression. However, practical considerations such as coupling power losses, bearing friction, and fluid viscosity cooling result in greater operational power demands. By minimizing the compression ratio per stage, these inefficiencies are mitigated. Therefore, the total power consumption for multi-stage compression is lower than that of single-stage compression.
Our cutting-edge two-stage screw air compressor is engineered with a highly advanced twin-stage rotary screw mechanism. This innovative system incorporates an active screw in each stage that drives a passive screw through a robust external power transmission system. The initial stage features a low-pressure screw group, while the subsequent stage uses a high-pressure screw group. Each screw is carefully encapsulated within a sealing air film. During operation, the gas experiences a three-phase process-suction, pressurization, and exhaust-delivering unparalleled compression efficiency.
First Stage Compression: At the first stage of our two-stage screw air compressor, the gas is adeptly compressed using a low-pressure screw group. Initially, the gas is drawn into the compression chamber via the suction valve, where the rapid rotation of the screw rotor compresses it before it is effortlessly transferred to the second stage.
Second Stage Compression: In the second stage screw group, the gas undergoes further compression within a more confined screw space, achieving elevated temperatures and pressures. The process reaches its apex 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 combines with a minimal amount of lubricating oil. This mixture is compressed to an intermediate pressure. Subsequently, the gas is directed into a cooling channel, where it interacts with a substantial amount of oil mist, significantly reducing its temperature. The cooled, compressed gas then progresses to the second-stage rotor for 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 Sanzhi's cutting-edge permanent magnet motor. This marvel of engineering boasts a significantly broader constant torque and weak magnetic range, elevating efficiency by an impressive 20-30% compared to traditional motors. Whether operating at or away from the rated frequency, it maintains exceptional efficiency, ensuring peak performance at all times.
2) Two-stage compression unique air end:Introducing our innovative two-stage compression screw machine, crafted with a uniquely designed air end. This masterpiece integrates both the first and second-stage compression rotors within a single, seamless casing, driven directly by precision gears. Each rotor achieves optimal linear speed, thereby maximizing the efficiency of compression like never before.
3) Integrated frequency converter: Equipped with China's leading frequency system, our air compressor offers a wide range of speed regulation with unmatched precision. Users can tailor the frequency to match precise gas demands, leading to remarkable energy savings and a notable boost in operational efficiency.
4) Reduce internal leakage:Leverage the power of two-stage compression technology to lower the compression ratio for each stage. This innovative approach minimizes internal leakage from high-pressure to low-pressure ends, significantly enhancing volumetric efficiency and ensuring optimal performance.
5) Variable frequency start and the soft startof the motor are expertly achieved, drastically reducing the strain on power grid equipment and safeguarding electrical components from potential damage.
6) Reduce energy consumption: Our robust frequency conversion system operates dynamically from 25% to 100%, a leap beyond the conventional 50% to 100% range. This translates to energy savings exceeding 30% over fixed-speed air compressors. When compared to standard variable frequency compressors, it provides an added 5% in energy efficiency, offering even greater savings for systems with variable gas demands.
7) No transmission loss: Our permanent magnet motor and compressor employ an innovative integrated shaft direct connection design, resulting in a more compact system. With the elimination of couplings and other transmission parts, it achieves an impeccable 100% transmission efficiency.
8) Air cooling method: Our superior air cooling method delivers outstanding cooling performance, effectively reducing the temperature of compressed air. This near-isothermal compression minimizes pressure loss between stages, reduces the compression ratio, and significantly enhances overall efficiency.
9)Smart Touch Controller: Our advanced built-in intelligence minimizes manual intervention, featuring a high-resolution color electronic screen. It offers clear graphical displays, comprehensive maintenance information, fault alarms, and safety shutdown alerts, ensuring smooth and seamless operation.
10)Special Type Intake Valve:Automatically controlled opening guarantees smooth engine fuel injection and lubricating oil circulation.
With ultra-low oil circuit loss, overall efficiency is significantly enhanced, delivering superior operational performance.
The normally open solenoid valve automatically closes during emergency stops, preventing oil injection and ensuring system safety at all times.
11)Excellent Air Filter:Our premium air filter, designed with superior air purification capabilities, ensures a pristine air system. It features a three-stage filtration process that guarantees superior air quality by effectively removing steam and dust, meeting even the strictest emission standards.
12)High-Quality Soundproof Cotton:Our compact noise reduction housing, combined with premium soundproof cotton, minimizes operational vibration. This results in substantial noise reduction, providing a quieter and more efficient workspace.
13) Motor maintenance-free:Our permanent magnet motor, devoid of internal bearings, eliminates the need for tedious motor bearing maintenance and replacement, reducing long-term maintenance costs and bolstering reliability over time.
14) Noise reduction:Discover the epitome of serenity and efficiency with the cutting-edge two-stage compression technology engineered by Sanzhi (Henan) Compressor Co., Ltd. This revolutionary system is designed to significantly diminish the compression ratio, which in turn dramatically decreases operational noise levels, especially during unloading phases. Immerse yourself in a quieter, more efficient working atmosphere that enhances productivity. The Sanzhi High Capacity Two-Stage Permanent Magnet VFD Screw Compressor is meticulously crafted for heavy-duty industrial tasks, ensuring your operations are elevated to new heights of performance and reliability. Trust in Sanzhi's excellence in engineering to transform your industrial experience.
15) Effortless Maintenance and Service:Introducing our pioneering two-stage compressor unit, thoughtfully designed by Sanzhi (Henan) Compressor Co., Ltd. This innovative system retains the well-known structure and systems of traditional single-stage compressors, with the unique enhancement of the screw air end. This thoughtful design ensures that maintenance and servicing are straightforward, intuitive, and hassle-free. With the Sanzhi High Capacity Two-Stage Permanent Magnet VFD Screw Compressor, experience seamless upkeep and consistently optimal performance that you can rely on for heavy industrial demands. Choose Sanzhi for simplified maintenance and unparalleled 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 sourcing directly from us, you gain access to factory-direct pricing that ensures your market competitiveness is second to none.
2. Direct Transactions
Enjoy streamlined cost-efficiency and reliability with our direct transactions. Our products come straight from the factory to you, guaranteeing significant savings and dependable service.
3. OEM & ODM Services
Leverage our advanced production and management facilities for customized OEM and ODM services. We meticulously tailor our offerings to meet your exact specifications, ensuring your distinct needs are flawlessly addressed.
4. Customized Solutions
We specialize in non-standard and export orders, expertly accommodating specific voltage, power, and pressure requirements. Share your customization needs, and we'll deliver solutions that perfectly align with your demands.
5. Small Order Acceptance
Start your partnership with a small trial order and witness the exceptional quality of our products. Confirm your satisfaction before scaling your investment.
6. Rapid Delivery
Experience the reassurance of our prompt and efficient delivery services. We prioritize swift delivery of your premium products to ensure your operations remain uninterrupted.
7. Comprehensive Authorization
Elevate your distribution potential with our extensive authorization certificates. Confidently market and sell SANZHI brand products, backed by thorough certification.
Sanzhi (Henan) Compressor Co., Ltd is a premier and esteemed manufacturer, renowned for our cutting-edge screw air compressors and screw vacuum pumps. With an impressive legacy of over a decade in the industry, we proudly showcase a vast and versatile range of products. Our offerings include normal and low-pressure screw air compressors, advanced permanent magnet frequency conversion models, and sophisticated two-stage compression screw air compressors. Specifically designed for laser cutting applications, we provide both single-tank and double-tank mobile screw air compressors, alongside electric and diesel variants. Our innovative screw vacuum pumps complete our lineup, all crafted to meet the most rigorous industrial demands.
Our production facility is a beacon of modern engineering, featuring advanced multi-air compressor assembly lines that guarantee efficiency and precision. Bolstered by a team of over 50 expert employees, we continuously refine our management systems, such as ERP, to drastically reduce lead times, ensuring the swift delivery of top-tier products. Our commitment to innovation drives us to remain at the forefront of the industry.
Our meticulously crafted management systems ensure adherence to the highest quality standards. As a proud bearer of the ISO9001 quality management certification, we implement stringent quality control protocols. Each machine undergoes thorough inspections at various stages-from material selection and production checks to pre-delivery evaluations-ensuring unparalleled product reliability and excellence. Our unwavering dedication to quality offers you peace of mind.
Our exceptional customer service begins with an expert pre-sales team, ready to guide you in selecting the ideal air equipment tailored to your unique facility needs. With extensive customization options, including appearance and configuration, we create bespoke products through our OEM services to meet specific dealer demands. Our professional sales and service team stands ready to provide prompt post-sales support, ensuring all your needs are swiftly addressed. Experience the unmatched customer care of Sanzhi.
At Sanzhi (Henan) Compressor Co., Ltd, our commitment to delivering superior, reliable, and stable products is unwavering. We strive to build long-term relationships with our clients, promising efficient delivery, top-quality machinery, and competitive pricing. Rest assured, we will provide you with the optimal compressed air solution, ensuring exceptional value and performance tailored to your needs.
Situated in the serene Xinzheng City, Henan Province, China, our factory enjoys a strategic location just 30 kilometers from Xinzheng International Airport, roughly an hour's drive. We warmly welcome you to visit our facility and witness our exceptional offerings firsthand. Discover the Sanzhi difference in person!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a distinguished manufacturer specializing in screw air compressors, backed by over a decade of industry expertise. Our extensive experience sets us apart as leaders in the field.
Q2. How do you control quality?
A: 1. We conduct rigorous inspections of raw materials to ensure unmatched quality before production kicks off.
2. Our meticulous installation process is carefully monitored at every stage.
3. Each machine undergoes a minimum of 5 continuous hours of testing prior to dispatch, guaranteeing optimal performance and reliability.
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 you need, such as air tanks, filters, or air dryers.
Share this information with us, and we will tailor a perfect solution for you! Our expert team guarantees that we will meet your precise needs with expertise and precision.
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 presents a diverse range of voltage options to cater to worldwide requirements. Our offerings include 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p, ensuring versatility and adaptability. We excel in providing bespoke solutions to meet your exact electrical demands.
Q6. How long is the delivery time?
A: For our standard voltage models, we commit to dispatch within just 15 working days following order confirmation. Should your needs be for non-standard voltages, our attentive sales team is at your service to provide a precise delivery timetable.
Q7. What's the payment term?
A: Our payment terms are crafted for your convenience: 30% T/T upfront, 40% T/T prior to shipment, and the final 30% T/T once the B/L copy is received. We accommodate payments in both USD and RMB, offering flexibility to suit your preferences.
Q8. How about your warranty?
A: Sanzhi stands behind its products with a robust warranty package: a full year for the entire machine and an extended two-year warranty for the screw air compressor, excluding consumable parts. This commitment ensures peace of mind and reliable performance.
Q9. What about the maintenance?
A: The initial maintenance is crucial and should be conducted after 500 operational hours. Following this, we recommend regular maintenance at intervals of 2000-3000 hours, tailored to your specific working conditions for optimal performance.
Q10. Can machines be run in high-temperature environment?
A: Absolutely! Our machines are engineered to perform exceptionally well even in high-temperature settings. They ensure efficient functionality within a broad temperature range of -20° to 45° (-4ºF to 113ºF), providing unwavering reliability.
Q11. Do you offer OEM service?
A: Indeed, we are experts in delivering both OEM and ODM services. Our talented design team is adept at crafting custom orders, offering solutions that seamlessly align with your unique specifications and requirements.
Q12. How long could your air compressor be used?
A: Engineered for durability, our air compressors promise a remarkable lifespan that typically extends beyond 10 years. They deliver steadfast, reliable service, meeting the demands of your operations over the long term.
Q13. Will you provide some spare parts for the machines?
A: Certainly, we offer a comprehensive suite of premium spare parts. This ensures that your machines operate smoothly and continue to deliver peak performance throughout their lifespan.
Q14. How about your after-sales service?
A: Our after-sales service is second to none, providing thorough online guidance for installation and commissioning. Should you require, we can also dispatch skilled engineers for hands-on training and meticulous installation support.
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