Discover the ultimate fusion of power and precision with the Large Power Oil-Lubricated Screw Compressor, brought to you by China's leading innovator, Sanzhi (Henan) Compressor Co., Ltd. This cutting-edge Permanent Magnet Variable Frequency Two-Stage Screw Air Compressor is available at factory-direct prices, delivering exceptional energy savings and heightened efficiency. Featuring state-of-the-art High-Quality Centrifugal Fans, our stationary compressor redefines reliability and peak performance, crafted for the most challenging industrial applications. Enhance your operational efficiency with Sanzhi's robust 185kw High Volume Two-Stage Screw Air Compressor, designed for Industrial Use, promising extraordinary durability and unwavering consistency. Embrace unmatched efficiency, steadfast reliability, and impressive cost-effectiveness with Sanzhi's groundbreaking compressor technology, meticulously engineered to elevate your industrial processes to unprecedented levels of performance and sustainability.
Internal Structure Frontside
Internal Structure Backside
Working Principle
In an ideal air compression scenario, the power required for single-stage pressure transmission equals the cumulative power for multi-stage compression. However, in real-world operations, several factors such as coupling transmission losses, bearing friction, and the cooling effects of liquid viscosity contribute to increased power demand. To enhance efficiency, it is essential to minimize the compression ratio at each stage, ensuring that the overall power required for multi-stage compression is lower than that of single-stage compression.
The two-stage screw air compressor is an innovative engineering marvel featuring a dual rotary screw mechanism. This system comprises both active and passive screws, where the active screw, powered by an external transmission, drives the passive screw. The process initiates with a low-pressure screw group in the first stage, followed by a high-pressure screw group in the second stage. Each screw is surrounded by a sealing air film, enabling gas compression through a series of sequential suction, pressurization, and exhaust cycles during rotation.
First Stage Compression: This initial phase marks the beginning of the gas compression journey. Here, the low-pressure screw group initiates the process as gas enters the screw compression chamber via the suction valve. The rapid rotation of the screw rotor further compresses the gas, preparing it for efficient transfer to the second stage.
Second Stage Compression: In this advanced phase, the gas is guided into a more confined screw space, where it undergoes compression at substantially higher temperatures and pressures. Subsequently, the exhaust valve opens, efficiently releasing the high-pressure gas from the system.
The process begins with natural air being drawn into the initial stage through an air filter, where it mixes with a minimal amount of lubricating oil in the compression chamber. The gas is compressed to an interstage pressure and then cooled in the cooling channel by contact with oil mist, significantly reducing its temperature. The cooled gas advances to the second-stage rotor for further compression to the final exhaust pressure. The cycle concludes as the compressor discharges the high-pressure gas through the exhaust valve, completing the sophisticated compression process with remarkable efficiency.
| Sanzhi (Henan) Compressor Co,. Ltd. |
| Two-Stage Compression Permanent Magnet Variable Frequency Screw Air 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. |
Experience the unmatched power and efficiency of Sanzhi (Henan) Compressor Co., Ltd.'s High Volume Centrifugal Fan Two-Stage Air Compressor! This cutting-edge system, boasting a high-speed rotating impeller, meticulously accelerates and decelerates air, ensuring precise axial entry and advanced cooling capabilities. It surpasses traditional air-cooled fans, offering superior support for continuous operations, which significantly extends the service life of the unit.
1) High Efficiency of PM Motor:Our state-of-the-art permanent magnet motor showcases an expanded constant torque range and a weak magnetic range, achieving 20-30% higher efficiency than standard motors. It consistently maintains exceptional performance, even when operating beyond the rated frequency, setting a new benchmark in motor technology.
2) Maintenance-Free Motor:Our revolutionary permanent magnet motor is engineered without internal bearings, completely eliminating the costly maintenance and frequent replacement associated with traditional motor bearings, resulting in a truly maintenance-free experience.
3) Integrated Frequency Converter:Featuring China's leading frequency system, our compressor exhibits an extensive and precise speed regulation range. It seamlessly adapts to actual gas demands, offering remarkable energy-saving capabilities that redefine efficiency.
4) Zero Transmission Loss:The integrated shaft structure directly connects the permanent magnet motor to the compressor, doing away with the need for couplings and other transmission components, thereby ensuring flawless 100% transmission efficiency.
5) Variable Frequency Start and Soft Start:This sophisticated feature significantly reduces the impact on power grid equipment, effectively safeguarding electrical systems against potential damage and ensuring smooth start-up operations.
6) Reduced Energy Consumption:Our frequency conversion capability ranges from 25% to 100%, outperforming the standard 50% to 100% range. This results in over 30% energy savings compared to fixed-speed air compressors, and approximately 5% more savings than standard variable frequency compressors. Larger fluctuations in system gas consumption further amplify these impressive energy-saving effects.
7) Unique Two-Stage Compression Air End:Our ingeniously designed air end integrates first-stage and second-stage compression rotors within a single case, each driven directly by gears. This innovative design ensures optimal linear speed, enhancing overall compression efficiency and reliability.
8) Innovative Internal Spray Curtain Cooling Method:Our high energy-saving internal spray curtain cooling method provides superior cooling, significantly lowering the temperature of compressed air. It achieves near-isothermal compression, reduces interstage pressure loss, lowers compression ratios, and substantially enhances overall compression efficiency.
9) Minimized Internal Leakage:By reducing the compression ratio for each stage, our advanced two-stage compression method minimizes internal leakage from high-pressure to low-pressure ends, thereby dramatically enhancing volume efficiency.
10) Noise Reduction:The sophisticated two-stage compression system effectively lowers the compression ratio, resulting in significantly reduced noise levels, especially during unloading, providing a quieter and more efficient operation.
11) Easy Maintenance and Service:With its two-stage compressor unit, the similarities in systems and structures to single-stage compression make maintenance and user servicing both straightforward and convenient, apart from the screw air end, thereby enhancing overall user experience.
12) Door panels are removable:The unit's casing is crafted from noise-treated metal plates with panels equipped with high-density sound-absorbing material, ensuring the noise level meets international standards. The door plate is designed for easy opening and disassembly, providing a 270-degree all-round access, facilitating maintenance personnel's access to the unit's interior and significantly enhancing ease of service and upkeep.
1. Unmatched Price Competitiveness
We revolutionize your purchasing experience with direct ex-factory pricing, providing an unparalleled advantage in your market. Enjoy remarkable cost efficiency paired with exceptional quality, allowing you to dominate and excel in your industry with unwavering assurance.
2. Seamless Direct Transactions
Our products transition directly from the factory floor to you, delivering cost-effective solutions. By eliminating the middleman, we ensure significant savings reach your hands, promising affordability that never sacrifices quality.
3. Exceptional OEM & ODM Services
With our cutting-edge production and management expertise, we provide outstanding OEM and ODM services, meticulously tailored to your specifications. Partner with us to bring your concepts to life with unparalleled precision and excellence.
4. Tailored Customization
Our doors are open to non-standard, export, and bespoke orders for voltage, power, pressure, and more. Contact us to explore your specific requirements, and we'll create a solution that perfectly fits your distinct specifications.
5. Acceptance of Small Orders
Start with a small trial order to personally witness the exceptional quality of our products. Discover why SANZHI is the trusted choice for clients seeking unparalleled performance and dependability.
6. Swift and Reliable Delivery
Leverage our premium products with our quick and dependable delivery services. We ensure your orders are timely, keeping your operations running smoothly and efficiently.
7. Comprehensive Authorization
For our esteemed distributors, we provide thorough authorization certificates, enabling you to market SANZHI brand products with absolute confidence. Enhance your sales potential and credibility with our robust brand support.
Sanzhi (Henan) Compressor Co., Ltd. is a distinguished luminary in the manufacturing sector, celebrated for its exceptional screw air compressors and vacuum pumps. With a legacy of over a decade marked by unwavering dedication, our extensive product range features standard and low-pressure screw air compressors, innovative permanent magnet frequency conversion models, two-stage compression units, specialized laser cutting compressors, and adaptable mobile screw compressors. Available in both single and double-tank configurations, we offer electric and diesel options, all enhanced by our pioneering screw vacuum pumps.
Our production processes are the epitome of efficiency and sophistication, featuring advanced multi-air compressor assembly lines. With the support of a talented team exceeding 50 employees, we consistently refine our ERP-driven management practices, significantly shortening lead times and guaranteeing the prompt delivery of superior quality products.
By adhering to exemplary standards, our factory boasts ISO9001 certification, a testament to our steadfast commitment to quality management. We rigorously implement comprehensive quality assurance protocols, ensuring each machine undergoes meticulous material inspections, production evaluations, and thorough pre-dispatch checks before leaving our premises.
Our customer service ethos is unparalleled. Our pre-sales team offers expert consultation to assist in selecting the ideal air equipment, with extensive customization options for appearance and configuration. We excel in crafting bespoke OEM products tailored to specific dealer requirements. Our after-sales team, comprised of seasoned professionals, ensures rapid and effective responses to all customer inquiries and needs.
At Sanzhi (Henan) Compressor Co., Ltd., our commitment is to deliver high-performance, reliable products that cultivate enduring customer relationships. Our efficient delivery timelines, superior machinery, and competitive pricing ensure that you receive exceptional compressed air solutions every time.
Strategically situated in Xinzheng City, Henan Province, China, our factory is easily accessible. We provide complimentary transportation from Xinzheng International Airport to our facility, a convenient 30-kilometer journey that takes approximately one hour. We warmly invite you to visit us!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are an expert manufacturer with a focus on screw air compressors, backed by over a decade of professional experience.
Q2. How do you control quality?
A: 1. Rigorous inspection of raw materials.
2. Strict oversight of installation procedures.
3. Each machine undergoes a minimum of 5 hours of continuous testing prior to dispatch.
Q3. What information must I provide to get the suitable machine?
1. The required air delivery capacity (Unit: CFM or m³/Min).
2. The necessary working pressure (Unit: PSI, Bar, or Mpa).
3. The voltage and frequency of your location (V/Hz).
4. Any additional accessories needed, such as an air tank, filters, or air dryers.
Provide us with these details, and we will tailor a 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 for air compressors?
A: Sanzhi offers compressors in voltages of 380V/50Hz/3P, 400V/50Hz/3P, 415V/50Hz/3P, 220V/60Hz/3P, 440V/60Hz/3P, and can customize according to your requirements.
Q6. How long is the delivery time?
A: For standard voltage specifications, Sanzhi (Henan) Compressor Co., Ltd. promises a swift delivery with a lead time of merely 15 working days following order confirmation. Should your needs extend to custom, non-standard voltage specifications, our adept sales team is eager to assist. They provide precise and personalized delivery timelines, perfectly synchronized with your unique requirements, ensuring your utmost satisfaction.
Q7. What's the payment term?
A: Crafting a seamless transaction experience, our payment terms are strategically structured as follows: An initial 30% T/T deposit sets the transaction in motion, succeeded by 40% T/T prior to shipment, and the concluding 30% T/T upon receipt of the B/L copy. For your convenience, we accept payments in both USD and RMB, offering flexibility to meet your financial preferences.
Q8. How about your warranty?
A: Our robust warranty program extends a full one-year warranty for the entire machine, coupled with an enhanced two-year warranty exclusively for the screw air compressor. This comprehensive coverage ensures all non-consumable components are protected, providing you peace of mind and confidence in our products.
Q9. What about the maintenance?
A: To maintain your machine in prime condition, we advocate for an initial maintenance check-up after the first 500 operating hours. Following this, regular maintenance is recommended every 2000-3000 hours, contingent on specific working conditions, thereby ensuring consistent optimal performance and longevity.
Q10. Can machines be run in high-temperature environment?
A: Undoubtedly, our machines are scrupulously designed to deliver exceptional performance even in high-temperature environments. They operate efficiently within a temperature range of -20° to 45° (-4ºF to 113ºF), ensuring reliability and full functionality no matter the climatic challenges.
Q11. Do you offer OEM service?
A: Yes, we are proud to extend our comprehensive OEM and ODM services, backed by our dedicated design team. Their commitment lies in delivering innovative and adaptable solutions tailored precisely to your specifications, ensuring your vision is brought to life with precision.
Q12. How long could your air compressor be used?
A: With a commitment to exceptional durability, our air compressors are engineered to provide an impressive lifespan exceeding 10 years. This ensures long-term reliability and peace of mind, affirming our dedication to quality and longevity.
Q13. Will you provide some spare parts for the machines?
A: Certainly, we prioritize the availability of crucial spare parts for all our machinery. This guarantees efficient maintenance and prompt repairs, ensuring that your operations remain uninterrupted and efficient.
Q14. How about your after-sales service?
A: Our extensive after-sales service encompasses comprehensive online guidance for both installation and commissioning. For further convenience, we offer the option to dispatch skilled engineers for on-site training and installation support, ensuring seamless and efficient operations from the very first day.
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