Unleash unmatched industrial prowess with the Large Power Oil-Lubricated Screw Compressor from China's premier supplier, Sanzhi (Henan) Compressor Co., Ltd. Take advantage of factory-direct pricing on this state-of-the-art Permanent Magnet Variable Frequency Two-Stage Screw Air Compressor, impeccably designed for exceptional energy savings and superior efficiency. Boasting top-tier High-Quality Centrifugal Fans, this stationary compressor sets a new standard in reliability and performance, tailored for the most demanding applications. Elevate your operations with Sanzhi's 185kw High Volume Two-Stage Screw Air Compressor for Industrial Use, ensuring remarkable durability and consistency. Experience unparalleled efficiency, reliability, and cost-effectiveness with Sanzhi's cutting-edge compressor technology, engineered to propel your industrial processes to new heights 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, during real-world operations, various factors such as coupling transmission losses, bearing friction, and the cooling effects of liquid viscosity increase the power demand. Enhancing efficiency necessitates minimizing the compression ratio at each stage to ensure that the overall power required for multi-stage compression remains lower than that of single-stage compression.
The two-stage screw air compressor is an advanced piece of engineering featuring a dual rotary screw mechanism, which includes both active and passive screws. The active screw, driven by an external transmission, propels the passive screw. The system begins with a low-pressure screw group in the first stage, followed by a high-pressure screw group in the second stage. Each screw is enveloped by a sealing air film, facilitating gas compression through sequential suction, pressurization, and exhaust cycles during rotation.
First Stage Compression: In this initial phase, the low-pressure screw group begins the gas compression process. Gas enters the screw compression chamber through the suction valve, where the rapid rotation of the screw rotor further compresses the gas and efficiently transfers it to the second stage.
Second Stage Compression: In this advanced stage, the gas enters a more confined screw space, undergoing compression at significantly higher temperatures and pressures. The exhaust valve then opens, 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 small 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 lowering its temperature. The cooled gas moves 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.
| 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 our High Volume Centrifugal Fan Two-Stage Air Compressor! Equipped with a high-speed rotating impeller, this advanced system precisely accelerates and decelerates air, ensuring axial entry and rapid cooling. It outperforms conventional air-cooled fans, supporting continuous operations and significantly extending service life.
1) High Efficiency of PM Motor:Our state-of-the-art permanent magnet motor offers an expanded constant torque range and weak magnetic range, delivering 20-30% higher efficiency than standard motors. It maintains exceptional performance, even when operating outside the rated frequency.
2) Maintenance-Free Motor:Designed without internal bearings, our advanced permanent magnet motor eliminates the costly maintenance and replacement associated with traditional motor bearings.
3) Integrated Frequency Converter:Featuring China's premier frequency system, our compressor boasts a wide and precise speed regulation range. It seamlessly adapts to actual gas demand, providing exceptional energy-saving capabilities.
4) Zero Transmission Loss:The integrated shaft structure directly connects the permanent magnet motor to the compressor, eliminating the need for couplings and other transmission parts, ensuring flawless 100% transmission efficiency.
5) Variable Frequency Start and Soft Start:This feature greatly reduces the impact on power grid equipment, effectively protecting electrical systems from potential damage.
6) Reduced Energy Consumption:Our frequency conversion ranges from 25% to 100%, surpassing the standard 50% to 100% range. This results in over 30% energy savings compared to fixed-speed air compressors and about 5% more than standard variable frequency compressors. Larger fluctuations in system gas consumption further amplify these energy-saving effects.
7) Unique Two-Stage Compression Air End:Our uniquely designed air end integrates first-stage and second-stage compression rotors within a single case, each driven directly by gears. This design ensures optimal linear speed and enhances overall compression efficiency.
8) Innovative Internal Spray Curtain Cooling Method:Our high energy-saving internal spray curtain cooling method delivers superior cooling, significantly reducing the temperature of compressed air. It achieves near-isothermal compression, reduces interstage pressure loss, lowers compression ratios, and enhances overall compression efficiency.
9) Minimized Internal Leakage:By reducing the compression ratio for each stage, our two-stage compression method minimizes internal leakage from high-pressure to low-pressure ends, thereby greatly enhancing volume efficiency.
10) Noise Reduction:The two-stage compression system effectively lowers the compression ratio, resulting in significantly reduced noise levels, particularly during unloading.
11) Easy Maintenance and Service:With a two-stage compressor unit, the similarities in systems and structures to single-stage compression make maintenance and user servicing straightforward and convenient, aside from the screw air end.
12) Door panels are removable:The unit's casing, crafted from noise-treated metal plates, features panels equipped with high-density sound-absorbing material, ensuring the noise level meets international standards. The door plate can be opened and disassembled, offering a 270-degree all-round access, facilitating maintenance personnel's access to the unit's interior and enhancing ease of service and upkeep.
1. Unmatched Price Competitiveness
We offer direct ex-factory prices, ensuring our customers maintain a significant edge in their markets. Experience substantial cost savings combined with outstanding quality, empowering you to lead and conquer your market with confidence.
2. Seamless Direct Transactions
Our products are delivered straight from the factory, enabling us to offer more budget-friendly solutions. By cutting out intermediaries, we pass the savings directly to you, guaranteeing affordability without compromising on quality.
3. Exceptional OEM & ODM Services
Harnessing our advanced production and management capabilities, we deliver superior OEM and ODM services tailored precisely to your needs. Collaborate with us to realize your vision with unmatched precision and excellence.
4. Tailored Customization
We are open to non-standard, export, and custom orders for voltage, power, pressure, and more. Reach out to discuss your specific needs, and let us craft a solution that perfectly aligns with your unique specifications.
5. Acceptance of Small Orders
Initiate a small trial order to experience the exceptional quality of our products firsthand. Discover why clients consistently rely on SANZHI for superior performance and reliability.
6. Swift and Reliable Delivery
Take advantage of our premium products coupled with prompt and efficient delivery services. We ensure that your orders arrive on time, keeping your operations seamlessly functional.
7. Comprehensive Authorization
For our valued distributors, we offer complete authorization certificates, empowering you to market SANZHI brand products with utmost confidence. Utilize our brand's strength to enhance your sales and credibility.
Sanzhi (Henan) Compressor Co., Ltd. stands as a beacon of excellence in the manufacturing industry, renowned for producing high-quality screw air compressors and vacuum pumps. With over a decade of relentless dedication, our diverse portfolio includes standard and low-pressure screw air compressors, cutting-edge permanent magnet frequency conversion models, two-stage compression units, laser cutting-specific compressors, and versatile mobile screw compressors. Available in single and double-tank variants, our offerings come in both electric and diesel versions, complemented by our innovative screw vacuum pumps.
Our production processes epitomize efficiency and modernity, showcasing state-of-the-art multi-air compressor assembly lines. Supported by a skilled team of over 50 employees, we continually enhance our ERP-driven management systems, significantly reducing lead times and ensuring the timely delivery of premium quality products.
Adhering to the highest standards, our factory proudly holds ISO9001 certification, a testament to our unwavering commitment to quality management. We rigorously enforce comprehensive quality control measures, ensuring each machine undergoes meticulous material inspections, production assessments, and thorough pre-delivery checks before it leaves our facility.
Our customer service ethos is unmatched. Our pre-sales team provides expert guidance to help you select the ideal air equipment, with extensive customization options available for appearance and configuration. We specialize in creating bespoke OEM products tailored to specific dealer requirements. Our after-sales team, composed of experienced professionals, guarantees swift and effective responses to all customer inquiries and needs.
At Sanzhi (Henan) Compressor Co., Ltd., we are dedicated to delivering high-performance, reliable products that foster enduring customer relationships. Our efficient delivery schedules, superior machines, and competitive pricing ensure you receive exceptional compressed air solutions every time.
Strategically located in Xinzheng City, Henan Province, China, our factory offers easy accessibility. We provide complimentary transportation from Xinzheng International Airport to our premises, a brief 30-kilometer journey that takes approximately one hour. We warmly welcome you to visit us!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a specialized manufacturer focusing on screw air compressors, with over a decade of professional experience.
Q2. How do you control quality?
A: 1. Strict inspection of raw materials.
2. Rigorous control of installation procedures.
3. Each machine undergoes a minimum of 5 hours of continuous testing before 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, we guarantee rapid delivery with a lead time of just 15 working days post order confirmation. Should you need custom, non-standard voltage specifications, please connect with our expert sales team for precise, tailored delivery timelines perfectly aligned with your unique requirements.
Q7. What's the payment term?
A: To ensure a seamless transaction experience, our payment terms are as follows: a 30% T/T deposit is required at the outset, followed by 40% T/T prior to shipment, and the remaining 30% T/T upon receipt of the B/L copy. We accept payments in both USD and RMB for your convenience.
Q8. How about your warranty?
A: Our comprehensive warranty program offers a one-year warranty for the entire machine and an extended two-year warranty specifically for the screw air compressor, ensuring coverage for all non-consumable components.
Q9. What about the maintenance?
A: We recommend an initial maintenance check-up after the first 500 operating hours. Thereafter, regular maintenance should be performed every 2000-3000 hours, depending on specific working conditions, to sustain optimal performance.
Q10. Can machines be run in high-temperature environment?
A: Absolutely, our machines are meticulously engineered to maintain peak performance in high-temperature environments, functioning efficiently within a temperature range of -20° to 45° (-4ºF to 113ºF).
Q11. Do you offer OEM service?
A: Yes, we proudly offer comprehensive OEM and ODM services. Our dedicated design team is committed to delivering innovative and flexible solutions tailored to your precise specifications.
Q12. How long could your air compressor be used?
A: Engineered for exceptional durability, our air compressors boast a remarkable lifespan exceeding 10 years, ensuring long-term reliability and peace of mind.
Q13. Will you provide some spare parts for the machines?
A: Absolutely, we ensure the availability of essential spare parts for all our machinery, guaranteeing efficient maintenance and timely repairs.
Q14. How about your after-sales service?
A: Our extensive after-sales service includes comprehensive online guidance for installation and commissioning. For added convenience, we can also dispatch engineers for on-site training and installation support, ensuring seamless and efficient operation from day one.
){kind=link}