Unleash unparalleled industrial prowess with the High Volume Sanzhi Stationary 185kw Screw Air Compressor with Centrifugal Fan from China's premier supplier, Sanzhi (Henan) Compressor Co., Ltd. Experience the advantage of factory-direct pricing on this cutting-edge Permanent Magnet Variable Frequency Two-Stage Screw Air Compressor, meticulously engineered for exceptional energy savings and superior efficiency. Featuring premium High-Quality Centrifugal Fans, this stationary compressor sets a new benchmark in reliability and performance, perfectly tailored for the most demanding industrial applications.
Internal Structure Frontside
Internal Structure Backside
Working Principle
In an ideal scenario, the power for single-stage air compression is equivalent to the total power needed for multi-stage compression. However, real-world applications encounter increased power consumption due to transmission losses, bearing friction, and cooling effects caused by liquid viscosity. To maximize efficiency, it's essential to minimize the compression ratio at each stage, ensuring the total power required for multi-stage compression is less than that for single-stage compression.
The two-stage screw air compressor features a sophisticated dual rotary screw mechanism with both active and passive screws. An external transmission drives the active screw, which in turn propels the passive screw. The first stage employs a low-pressure screw group, while the second stage uses a high-pressure screw group. Each screw is surrounded by a sealing air film, enabling efficient gas compression through successive suction, pressurization, and exhaust cycles as the screws rotate.
First Stage Compression: At this initial stage, the low-pressure screw group begins compressing the gas. Gas is drawn into the screw compression chamber via the suction valve, where the high-speed rotation of the screw rotor compresses the gas further, moving it to the second stage.
Second Stage Compression: In the second stage, the gas enters a more confined screw space and is compressed at higher temperatures and pressures. The exhaust valve then opens, releasing the now high-pressure gas from the system.
Natural air is drawn into the first stage through an air filter, where it combines with a small amount of lubricating oil in the compression chamber. The gas is compressed to interstage pressure, then cooled in the cooling channel by oil mist contact, significantly lowering its temperature. The cooled gas enters the second-stage rotor for further compression to reach the final exhaust pressure, culminating as high-pressure gas is discharged 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 unparalleled power of our High Volume Centrifugal Fan Two-Stage Air Compressor! With a high-speed rotating impeller that expertly accelerates and decelerates air, this advanced system ensures axial air entry for rapid cooling. Outperforming typical air-cooled fans, our efficient cooling mechanism allows for continuous operation, significantly extending the compressor's service life.
1) High Efficiency of PM Motor:Our state-of-the-art permanent magnet motor features a broader constant torque range and a weak magnetic range, delivering an astonishing 20-30% higher efficiency compared to standard motors. Even outside rated frequency, it maintains exceptional motor efficiency, offering unparalleled performance.
2) Maintenance-Free Motor:Eliminating the need for internal bearings, our permanent magnet motor reduces the costs associated with motor bearing maintenance and replacement, providing a maintenance-free solution.
3) Integrated Frequency Converter:Equipped with China's leading frequency system, our compressor offers a wide speed regulation range with high precision. It adapts seamlessly to your actual gas demand, providing outstanding energy-saving performance.
4) Zero Transmission Loss:Our permanent magnet motor and compressor feature an embedded integrated shaft directly connected structure, eliminating couplings and other transmission parts for 100% transmission efficiency.
5) Variable Frequency Start and Soft Start:This advanced feature significantly reduces the impact on power grid equipment, preventing potential damage to electrical systems.
6) Reduced Energy Consumption:Our frequency conversion ranges from 25% to 100%, unlike ordinary conversions which range from 50% to 100%. This results in over 30% energy savings compared to fixed-speed air compressors, and about 5% more than standard variable frequency compressors. The more significant the fluctuation in system gas consumption, the more noticeable the energy-saving effect.
7) Unique Two-Stage Compression Air End:Our cutting-edge two-stage compression screw machine features a uniquely designed air end that combines first-stage and second-stage compression rotors within a single case. Direct gear drive ensures each rotor achieves optimal linear speed, boosting compression efficiency.
8) Innovative Internal Spray Curtain Cooling Method:Our high energy-saving internal spray curtain cooling method ensures superior cooling effects, significantly reducing compressed air temperature. This approach achieves near-isothermal compression, reduces inter-stage pressure loss, lowers the compression ratio, and enhances overall compression efficiency.
9) Minimized Internal Leakage:Our two-stage compression method reduces the compression ratio for each stage, effectively minimizing internal leakage from high-pressure to low-pressure ends, thereby boosting volume efficiency.
10) Noise Reduction:The two-stage compression system reduces the overall compression ratio, significantly lowering noise levels, especially when unloading.
11) Easy Maintenance and Service:Featuring a two-stage compressor unit, our system maintains the simplicity of single-stage compression designs for other systems and structures, making maintenance and user servicing straightforward and convenient.
1. Exceptional Price Advantage
We offer direct ex-factory prices, ensuring our customers stay highly competitive in their markets. Enjoy unparalleled cost savings while maintaining superior quality, helping you to dominate your market.
2. Direct Transactions
Our products come straight from the factory, allowing us to provide more cost-effective solutions. By eliminating middlemen, we pass the savings directly to you, ensuring affordability without sacrificing quality.
3. Comprehensive OEM & ODM Services
With our robust production and management capabilities, we offer exceptional OEM and ODM services tailored to your needs. Partner with us to bring your vision to life with precision and excellence.
4. Personalized Customization
We welcome non-standard, export, and custom orders for voltage, power, pressure, etc. Contact us to discuss your specific requirements, and let us create a solution uniquely suited to your specifications.
5. Small Order Acceptance
Place a small trial order to experience the superior quality of our products firsthand. Discover why our clients trust SANZHI for consistent performance and reliability.
6. Rapid Delivery
Benefit from our high-quality products paired with timely and efficient delivery services. We ensure that you receive your orders promptly, keeping your operations running smoothly.
7. Full Authorization
For our distributors, we provide comprehensive authorization certificates, empowering you to market our SANZHI brand products with confidence. Leverage our brand's strength to boost your sales and credibility.
Sanzhi (Henan) Compressor Co., Ltd., a titan in the manufacturing sector, excels in producing top-tier screw air compressors and vacuum pumps. With over a decade of unwavering dedication, our extensive lineup includes both normal and low-pressure screw air compressors, cutting-edge permanent magnet frequency conversion models, two-stage compression units, specialized compressors for laser cutting, and versatile mobile screw compressors available in single and double-tank configurations. We offer both electric and diesel options, as well as innovative screw vacuum pumps.
Our production processes epitomize efficiency and modernity, featuring state-of-the-art multi-air compressor assembly lines. Supported by a team of over 50 skilled employees, we consistently refine our ERP-based management systems, drastically reducing lead times while ensuring the prompt delivery of superior quality products.
Adhering to the highest standards, our factory proudly holds ISO9001 certification, underscoring our unwavering commitment to quality management. We meticulously enforce rigorous quality control measures, ensuring each machine undergoes comprehensive material inspections, production evaluations, and thorough pre-delivery checks before it leaves our facility.
Our customer service ethos is second to none. Our pre-sales team offers expert advice to help you choose the ideal air equipment, with extensive customization options for appearance and configuration. We also excel in creating bespoke OEM products tailored to specific dealer requirements. Our after-sales team, comprised of seasoned professionals, guarantees rapid 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 lasting customer relationships. Our efficient delivery schedules, top-notch machines, and competitive pricing ensure you receive outstanding compressed air solutions every time.
Conveniently located in Xinzheng City, Henan Province, China, our factory is easily accessible. We offer complimentary transportation from Xinzheng International Airport to our premises, a brief 30-kilometer journey taking approximately one hour. We warmly welcome your visit!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a dedicated manufacturer specializing in screw air compressors, boasting 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 air compressor?
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 our standard voltage specifications, you can typically expect a lead time of 15 working days post order confirmation. For custom non-standard voltage requirements, we recommend consulting our dedicated sales team to obtain detailed delivery timelines tailored to your needs.
Q7. What are the payment terms?
A: Our payment terms are designed for your convenience: a 30% T/T deposit upfront, followed by 40% T/T before shipment, and the final 30% T/T upon receipt of the bill of lading copy. We accept payments in both USD and RMB to accommodate your preferences.
Q8. What warranty do you offer?
A: We are committed to quality and reliability, offering a comprehensive one-year warranty for the entire machine and a two-year warranty for the screw air compressor, excluding consumable spare parts.
Q9. What is the maintenance schedule?
A: Initial maintenance is crucial and should be conducted after 500 operating hours. Subsequent maintenance intervals range between 2000-3000 hours, adjusted according to the specific working conditions to ensure optimal performance.
Q10. Can your machines operate in high-temperature environments?
A: Absolutely, our machines are meticulously engineered to perform efficiently even in high-temperature environments, with an operational range from -20° to 45° (-4ºF to 113ºF).
Q11. Do you provide OEM services?
A: Yes, we offer both OEM and ODM services. Our professional design team is committed to flexibility, ensuring we meet your exact requirements with precision and excellence.
Q12. What is the typical lifespan of your air compressors?
A: Our air compressors are engineered for longevity, boasting a typical lifespan that exceeds 10 years, ensuring you receive long-term value and reliability.
Q13. Do you supply spare parts for the machines?
A: Yes, we ensure a steady supply of spare parts for all our machines, guaranteeing sustained performance and minimal downtime.
Q14. What kind of after-sales service do you provide?
A: We offer extensive after-sales support, including online guidance for installation and commissioning. Additionally, we can dispatch engineers for on-site training and installation assistance to ensure a seamless experience.
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