Introducing the revolutionary Low-Pressure Compressor from Sanzhi (Henan) Compressor Co., Ltd.! This groundbreaking Two-Stage Compression Permanent Magnet Variable Frequency Drive Screw Air Compressor sets a new standard in industrial excellence. Masterfully engineered for performance, it is available in a wide array of power options: 15KW, 22KW, 30KW, 37KW, 45KW, 55KW, 75KW, 90KW, 110KW, 132KW, 160KW, 185KW, 200KW, and 250KW. This versatile marvel is designed to deliver unparalleled efficiency and reliability, ensuring that your operations reach new heights. Elevate your industrial capabilities with this state-of-the-art solution, meticulously crafted to meet the diverse and demanding needs of today's modern industries.
Internal Structure Frontside
Internal Structure Backside
Working Principle
In an ideal air compression scenario, the energy required for single-stage pressure transmission equates to the combined energy demands of multi-stage compression. However, real-world factors such as coupling power losses, bearing friction, and the cooling effects of fluid viscosity lead to higher operational power requirements than anticipated. By strategically reducing the compression ratio at each stage, these inefficiencies are minimized, resulting in a multi-stage compression process that consumes less total power compared to single-stage compression.
Our cutting-edge two-stage screw air compressor is engineered with a state-of-the-art twin-stage rotary screw mechanism. This groundbreaking system features an active screw in each stage, driving a passive screw through a robust external power transmission setup. The first stage is equipped with a low-pressure screw group, while the second stage features a high-pressure screw group. Each screw is meticulously encapsulated within a sealing air film. Throughout the operation, the gas undergoes a sophisticated 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 optimally compressed with a low-pressure screw group. The gas is initially drawn into the compression chamber via the suction valve, where the screw rotor's high-speed rotation compresses it. This efficiently compressed gas is then transferred seamlessly to the second stage.
Second Stage Compression: In the subsequent second stage screw group, the gas undergoes further compression within a more confined screw space, achieving elevated temperatures and pressures. The process reaches its peak as the exhaust valve opens, releasing the high-pressure gases from the system and completing the compression cycle with exceptional efficiency.
Natural air is initially drawn through the air filter into the first compression stage, where it merges with a precise quantity of lubricating oil. This mixture undergoes compression to an intermediate pressure. The gas is then directed into a cooling channel, where it interacts with a significant amount of oil mist, resulting in a dramatic temperature reduction. The cooled, compressed gas proceeds to the second-stage rotor for its final compression to the ultimate exhaust pressure. The fully compressed gas is then released from the system through the exhaust valve, completing the entire compression cycle effectively.
1) High efficiency of PM motor:Unleash exceptional efficiency with our cutting-edge permanent magnet motor. Its expansive torque range and extended magnetic reach enable a remarkable 20-30% efficiency surge over conventional motors. This motor maintains its superior efficiency even beyond the rated frequency, promising unparalleled performance at every turn.
2) Two-stage compression unique air end:Introducing our groundbreaking two-stage compression screw machine, crafted with a uniquely engineered air end. The integration of first and second-stage compression rotors within a single casing, driven directly by precision gears, empowers each rotor to attain optimal linear speed, thereby elevating compression efficiency to its peak.
3) Integrated frequency converter: Featuring China's top-notch frequency system, this air compressor presents extensive speed regulation with impeccable precision. Users can effortlessly adjust the frequency to align with real-time gas demands, achieving substantial energy savings and heightened operational efficiency.
4) Reduce internal leakage:Our innovative two-stage compression technology lowers the compression ratio for each stage, effectively reducing internal leakage from high to low-pressure ends and substantially boosting volumetric efficiency.
5) Variable frequency start and the soft startof the motor are seamlessly executed, dramatically mitigating impacts on power grid infrastructures and safeguarding electrical components from potential damage.
6) Reduce energy consumption: Our advanced frequency conversion system flexibly operates from 25% to 100%-a notable advancement over the standard 50% to 100% range. When compared to fixed-speed air compressors, energy savings soar beyond 30%. Even against standard variable frequency compressors, it still delivers approximately 5% more energy efficiency, offering even greater savings for systems experiencing fluctuating gas demands.
7) No transmission loss: The integration of a direct connection structure between the permanent magnet motor and compressor eliminates transmission losses. This compact design forgoes couplings and other transmission components, achieving a flawless 100% transmission efficiency.
8) Air cooling method: Our remarkably efficient air cooling technique provides superior cooling performance, significantly lowering compressed air temperatures. This near-isothermal process minimizes inter-stage pressure losses, reducing the compression ratio and amplifying overall efficiency.
9)Smart Touch Controller: Equipped with our cutting-edge built-in intelligence, minimal manual operation is required. Its high-precision color electronic display offers clear graphical interfaces, maintenance data, fault alerts, and safety shutdown signals, ensuring seamless and safe operation.
10)Special Type Intake Valve:Automatic control of the valve opening facilitates smooth fuel injection and lubricating oil circulation.
The ultra-low oil circuit loss notably amplifies overall efficiency.
In emergencies, the normally open solenoid valve instantly shuts to prevent oil injection, safeguarding system security.
11)Excellent Air Filter:Our premium air filter provides outstanding air purification with its triple filtration stages, assuring exceptional air quality. It effectively eliminates steam and dust, complying with rigorous emission requirements.
12)High-Quality Soundproof Cotton:Our compact noise reduction housing, paired with premium soundproof cotton, drastically diminishes operational vibrations and significantly enhances sound suppression, creating a quieter, more efficient working environment.
13) Motor maintenance-free:Our maintenance-free permanent magnet motor, devoid of internal bearings, eradicates the need for motor bearing maintenance and replacement, cutting long-term maintenance expenses and bolstering reliability.
14) Noise reduction:Unlock the true essence of serenity with the unparalleled innovation of our cutting-edge two-stage compression technology. This revolutionary system expertly diminishes the compression ratio, leading to a substantial reduction in operational noise, particularly during the unloading phase. Immerse yourself in a quieter, more efficient workspace that enhances your productivity with Sanzhi's Professional Industrial Screw Compressor.
15) Effortless Maintenance and Service:Our groundbreaking two-stage compressor unit ingeniously retains the conventional structure and systems of a traditional single-stage compressor. With the sole exception of the screw air end, we guarantee that maintenance and service remain effortlessly straightforward and accessible for all. Revel in seamless upkeep and the assurance of consistent, 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 exceptional value by partnering with us. By sourcing directly from Sanzhi (Henan) Compressor Co., Ltd., you gain access to unbeatable factory-direct prices, keeping you at the forefront of a competitive market.
2. Direct Transactions
Capitalize on enhanced cost-efficiency and the assurance of direct transactions. All our offerings are supplied directly from the factory to you, ensuring maximum savings and reliability.
3. OEM & ODM Services
Unlock the potential of our extensive production and management capabilities. We provide tailored OEM and ODM services to meet your precise specifications, ensuring your unique needs are perfectly addressed.
4. Customized Solutions
We specialize in catering to non-standard and export orders, accommodating specific voltage, power, and pressure requirements. Reach out with your customization requests and let us deliver solutions that perfectly match your needs.
5. Small Order Acceptance
Initiate your engagement with a small trial order and witness the superior quality of our products firsthand, ensuring complete satisfaction before scaling up.
6. Rapid Delivery
Enjoy the peace of mind that comes with our swift and timely delivery services. We ensure your high-quality products are delivered promptly, keeping your operations smooth and uninterrupted.
7. Comprehensive Authorization
Enhance your distribution capabilities with our full authorization certificates. Confidently market and sell SANZHI brand products, backed by comprehensive certification.
Sanzhi (Henan) Compressor Co., Ltd is a renowned and esteemed producer, leading the way in innovative screw air compressors and cutting-edge screw vacuum pumps. With over ten years of unmatched industry experience, we proudly offer a diverse and extensive array of products. Our selection includes normal and low-pressure screw air compressors, state-of-the-art permanent magnet frequency conversion screw air compressors, advanced two-stage compression screw air compressors, and specialized screw air compressors crafted for laser cutting. We also feature mobile solutions such as single-tank and double-tank mobile screw air compressors, electric and diesel mobile screw air compressors, and sophisticated screw vacuum pumps.
Our cutting-edge production facility is equipped with advanced multi-air compressor assembly lines, ensuring outstanding efficiency and precision in every operation. Our dedicated team of over 50 expertly trained employees works tirelessly to enhance our management systems, including ERP, significantly reducing lead times and guaranteeing the rapid delivery of top-tier products.
Our meticulously crafted management systems are devoted to upholding the highest standards of quality. Certified under the prestigious ISO9001 quality management system, we follow stringent quality control protocols. Each machine undergoes thorough inspections at every stage-from material acquisition and production checks to meticulous pre-delivery evaluations-ensuring unparalleled product reliability and superiority.
Our outstanding customer service begins with a knowledgeable pre-sales team offering expert guidance to select the perfect air equipment tailored to any facility's needs. We offer extensive customization options, including appearance and configuration, crafting bespoke products to meet specific dealer requirements through our OEM services. Our professional sales and service team is always ready to provide swift and efficient post-sales support, ensuring your needs are expertly addressed.
At Sanzhi (Henan) Compressor Co., Ltd, we are steadfast in our commitment to delivering superior, reliable, and stable products. Committed to fostering long-term partnerships with our clients, we promise efficient delivery, top-quality machinery, and competitive pricing, ensuring you receive the best compressed air solution to meet your needs perfectly.
Located amid the scenic beauty of Xinzheng City, Henan Province, China, our factory is ideally situated just 30 kilometers from Xinzheng International Airport, approximately an hour's drive away. We warmly welcome 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 and bringing over ten years of industry expertise to the table.
Q2. How do you control quality?
A: 1. Our raw materials undergo rigorous and thorough inspection to guarantee the highest standards of quality.
2. The precise installation process is carefully monitored and controlled.
3. Each machine undergoes a minimum of five continuous hours of rigorous 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 an impeccable solution perfectly suited for you!
Q4. What is the general unit conversion?
1Bar equals 0.1Mpa or 14.5PSI
1m³/min equals 35.32cfm
1KW equals 1.34HP
Q5. What is the available voltage air compressor?
A: Sanzhi presents a versatile array of voltage options, including 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p, with tailor-made solutions to align precisely with your unique specifications.
Q6. How long is the delivery time?
A: For standard voltage configurations, delivery is promptly executed within 15 working days following order confirmation. For bespoke specifications, we invite you to engage with our dedicated sales team.
Q7. What's the payment term?
A: Our payment structure includes an initial deposit of 30% T/T, followed by 40% T/T prior to shipment, with the final 30% T/T due upon receipt of the B/L copy. Payments are accepted in both USD and RMB.
Q8. How about your warranty?
A: We proudly offer a robust warranty, covering one year for the entire machine and extending to two years for the screw air compressor, with the exclusion of consumable spare parts.
Q9. What about the maintenance?
A: Initial maintenance is advised after 500 hours of operation. Thereafter, regular maintenance should occur every 2000-3000 hours, tailored to the actual working conditions.
Q10. Can machines be run in high-temperature environment?
A: Certainly, our machines are expertly crafted to perform optimally in high-temperature settings, operating seamlessly within a temperature range of -20° to 45° (-4ºF to 113ºF).
Q11. Do you offer OEM service?
A: Indeed, we specialize in both OEM & ODM services, supported by our innovative design team. We warmly welcome your custom orders and unique design requests.
Q12. How long could your air compressor be used?
A: Our air compressors are meticulously engineered for durability, often providing a service life that surpasses 10 years.
Q13. Will you provide some spare parts for the machines?
A: Absolutely, we supply a comprehensive range of high-quality spare parts, ensuring your machinery operates smoothly and efficiently, thus extending its operational life and performance.
Q14. How about your after-sales service?
A: Our after-sales support is unparalleled, featuring exhaustive online installation and commissioning guidance. Additionally, we offer on-site expertise with skilled engineers available for training and precise installation support as necessary.
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