Unleash the full potential of your industrial capabilities with the Large Power Oil-Lubricated Screw Compressor, exclusively from Sanzhi (Henan) Compressor Co., Ltd., proud to be recognized as China's leading supplier. Experience the extraordinary benefits of factory-direct pricing on this state-of-the-art Permanent Magnet Variable Frequency Two-Stage Screw Air Compressor. Meticulously engineered for optimal energy savings and unparalleled efficiency, this compressor incorporates superior High-Quality Centrifugal Fans. Set new standards in reliability and performance with this stationary powerhouse, tailor-made for the most demanding industrial applications. Elevate your operational excellence with Sanzhi's 185kw High Volume Two-Stage Screw Air Compressor, renowned for its exceptional durability and unwavering consistency. Embark on a journey to the apex of efficiency, reliability, and cost-effectiveness with Sanzhi's cutting-edge compressor technology, specifically designed to propel your industrial processes to new heights of performance and sustainability.
Internal Structure Frontside
Internal Structure Backside
Working Principle
In a perfect air compression world, the energy for a single-stage process would ideally equal the energy sum of multi-stage operations. Nonetheless, real-world factors such as coupling transmission challenges, bearing friction, and the cooling effects of fluid viscosity elevate energy demands. To enhance efficiency, it becomes essential to lower the compression ratio at each stage, which ensures that the total power needed for multi-stage compression stays below that of a single-stage operation.
The two-stage screw air compressor is a testament to modern engineering brilliance, featuring a dual rotary screw design with active and passive screws. The active screw, driven by an external power source, propels the passive screw into action. Initiating with a low-pressure screw set in the first stage, the process advances to a high-pressure screw set in the second stage. Each screw is enveloped by an air film sealing it, which supports gas compression via a seamless series of suction, pressurization, and release cycles as the screws rotate.
First Stage Compression: This vital phase embarks on the gas compression path. Gas is drawn into the screw's compression chamber through the suction valve, where the rotor's swift spin compresses the gas and efficiently channels it to the second stage.
Second Stage Compression: At this sophisticated stage, gas enters a more compact screw chamber, undergoing compression at significantly higher temperatures and pressures. The exhaust valve then deftly opens, releasing the high-pressure gas from the system with precision.
The process begins with ambient air being aspirated into the initial stage through an air filter. Here, it merges with a small amount of lubricating oil within the compression chamber. This mixture is compressed to an intermediate pressure, then cooled in a channel where it meets oil mist, effectively lowering its temperature. This cooled gas proceeds to the second-stage rotor, where it is further compressed to reach the ultimate exhaust pressure. This process culminates in the graceful release of high-pressure gas through the exhaust valve, completing the cycle.
| 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 extraordinary power and unmatched efficiency of our High Volume Centrifugal Fan Two-Stage Air Compressor! This avant-garde system, adorned with a high-speed rotating impeller, masterfully accelerates and decelerates air, ensuring optimal axial entry and rapid cooling. It outperforms traditional air-cooled fans, facilitating seamless, uninterrupted operations while dramatically extending service life.
1) High Efficiency of PM Motor:Unleash the power of our state-of-the-art permanent magnet motor, which features an expanded constant torque and weak magnetic range. This motor delivers a remarkable 20-30% increase in efficiency over standard motors, consistently achieving superior performance, even beyond its rated frequency.
2) Maintenance-Free Motor:Ingeniously crafted without internal bearings, our advanced permanent magnet motor eliminates the costly maintenance and replacement challenges typical of conventional motor bearings.
3) Integrated Frequency Converter:Equipped with China's premier frequency system, our compressor boasts an expansive and precise speed regulation range. It skillfully aligns with actual gas demands, delivering exceptional energy-saving benefits.
4) Zero Transmission Loss:An integrated shaft structure flawlessly connects the permanent magnet motor directly to the compressor, abolishing couplings and transmission components, ensuring an impeccable 100% transmission efficiency.
5) Variable Frequency Start and Soft Start:This cutting-edge feature significantly reduces strain on power grid equipment, effectively shielding electrical systems from potential harm.
6) Reduced Energy Consumption:Our frequency conversion spans from 25% to 100%, surpassing the conventional 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. Greater fluctuations in system gas consumption further amplify these energy-saving effects.
7) Unique Two-Stage Compression Air End:Our ingeniously crafted air end integrates first-stage and second-stage compression rotors within a single case, each gear-driven. This design ensures optimal linear speed and enhances overall compression efficiency.
8) Innovative Internal Spray Curtain Cooling Method:Our pioneering internal spray curtain cooling method offers exemplary cooling, significantly reducing the temperature of compressed air. It achieves near-isothermal compression, diminishes interstage pressure loss, lowers compression ratios, and bolsters overall compression efficiency.
9) Minimized Internal Leakage:By reducing the compression ratio for each stage, our two-stage compression method minimizes internal leakage between high and low-pressure ends, significantly enhancing volume efficiency.
10) Noise Reduction:The revolutionary two-stage compression system effectively reduces the compression ratio, resulting in a substantial decrease in noise levels, especially during unloading.
11) Easy Maintenance and Service:Featuring a two-stage compressor unit, its similarities in systems and structures to single-stage compression render maintenance and user servicing effortlessly straightforward, aside from the screw air end.
12) Door panels are removable:The unit's casing, crafted from noise-treated metal plates, features panels lined with high-density sound-absorbing material, ensuring noise levels comply with international standards. The door plate can be opened and removed, providing a 270-degree all-around access, facilitating maintenance personnel's access to the unit's interior and enhancing the ease of service and upkeep.
1. Unmatched Price Competitiveness
We offer unbeatable direct ex-factory pricing, granting our valued clients a powerful competitive advantage in their markets. Enjoy remarkable cost savings without compromising on quality, allowing you to confidently lead your market arena.
2. Seamless Direct Transactions
With products shipped directly from our manufacturing site, we deliver cost-effective solutions without sacrificing quality. By cutting out middlemen, we pass the savings directly to you, ensuring exceptional value and uncompromised excellence.
3. Exceptional OEM & ODM Services
Utilizing our state-of-the-art production and management capabilities, we deliver exceptional OEM and ODM services tailored to your precise needs. Collaborate with us to transform your vision into reality with unmatched accuracy and quality.
4. Tailored Customization
We embrace requests for non-standard, export, and custom orders in voltage, power, pressure, and more. Contact us to discuss your unique needs, and we will engineer a solution perfectly tailored to your specific requirements.
5. Welcoming Small Order Requests
Start with a small trial order to experience the exceptional quality of our offerings firsthand. Discover why clients consistently choose SANZHI for exceptional performance and unwavering reliability.
6. Swift and Reliable Delivery
Take advantage of our premium product range complemented by fast and reliable delivery services. We ensure your orders arrive promptly, maintaining your operational efficiency.
7. Comprehensive Authorization Support
We provide full authorization certificates to our esteemed distributors, enabling you to market SANZHI brand products with complete confidence. Leverage our brand's strength to boost your sales and enhance your market presence.
Sanzhi (Henan) Compressor Co., Ltd. is a celebrated powerhouse in the manufacturing realm, renowned for its exceptional screw air compressors and vacuum pumps. With a robust foundation of over a decade, Sanzhi offers a diverse range of products, including standard and low-pressure screw air compressors, cutting-edge permanent magnet frequency conversion models, sophisticated two-stage compression units, compressors tailored for laser cutting, and versatile mobile screw compressors. Our offerings come in both single and double-tank setups, with power options ranging from electric to diesel, complemented by our innovative screw vacuum pumps.
Our production methodologies stand at the forefront of efficiency and modernization, epitomized by our state-of-the-art multi-air compressor assembly lines. Supported by a skilled team of over 50 committed employees, we consistently refine our ERP-enhanced management systems to significantly reduce lead times, ensuring the swift delivery of superior products.
Upholding excellence, our manufacturing facility is distinguished with the prestigious ISO9001 certification, reflecting our unwavering dedication to impeccable quality management. We rigorously implement comprehensive quality control measures, guaranteeing that each apparatus undergoes meticulous material checks, detailed production evaluations, and thorough pre-dispatch inspections before it departs our facility.
Our customer service ethos is unmatched. Our knowledgeable pre-sales team offers expert guidance in selecting the perfect air equipment, providing extensive customization options in both appearance and configuration. We excel in crafting bespoke OEM products to fulfill the specific needs of our dealers. Our after-sales team, comprised of seasoned experts, is committed to delivering prompt and efficient responses to all customer inquiries and requirements.
At Sanzhi (Henan) Compressor Co., Ltd., we are dedicated to delivering high-performance, reliable products that foster enduring customer partnerships. Our streamlined delivery schedules, top-notch machines, and competitive pricing ensure exceptional compressed air solutions with every engagement.
Strategically located in Xinzheng City, Henan Province, China, our factory is easily accessible. We offer complimentary transportation from Xinzheng International Airport to our facility, a quick 30-kilometer journey taking approximately one hour. We warmly invite you to visit us and witness our commitment firsthand!
FAQ
Q1. Are you a trading company or a manufacturer?
A: We are a specialist manufacturer in screw air compressors, with over a decade of expertise in the industry.
Q2. How do you ensure quality control?
A: 1. We perform stringent inspections on raw materials.
2. We maintain strict oversight of installation processes.
3. Each unit is subjected to at least 5 hours of continuous testing before dispatch.
Q3. What details must I provide to obtain the right machine?
1. Specify the required air delivery capacity (Units: CFM or m³/Min).
2. Outline the necessary working pressure (Units: PSI, Bar, or Mpa).
3. Provide the voltage and frequency specific to your location (V/Hz).
4. Indicate any additional accessories needed, such as an air tank, filters, or air dryers.
Provide these details, and we will tailor the ideal solution for you!
Q4. What are the standard unit conversions?
1Bar = 0.1Mpa = 14.5PSI
1m³/min = 35.32cfm
1KW = 1.34HP
Q5. What are the available voltage options for air compressors?
A: Sanzhi offers a versatile range of voltage options for our compressors: 380V/50Hz/3P, 400V/50Hz/3P, 415V/50Hz/3P, 220V/60Hz/3P, 440V/60Hz/3P. Additionally, we provide customization to meet your specialized requirements, ensuring our products perfectly align with your specific needs.
Q6. What is the typical delivery time?
A: Experience rapid delivery with our standard voltage models, boasting a remarkable lead time of just 15 working days post-order confirmation. For non-standard voltage requests, our proficient sales team will tailor a delivery schedule that precisely matches your needs, offering a bespoke solution that fits your unique demands.
Q7. What's the payment term?
A: Our payment process is crafted for your convenience. Terms include an initial 30% T/T deposit, followed by a 40% T/T prior to shipment, and the final 30% T/T upon receipt of the B/L copy. We accept payments in both USD and RMB, accommodating your preferred currency for seamless transactions.
Q8. How about your warranty?
A: Delight in the assurance of our robust warranty program: a comprehensive one-year warranty covers the entire machine, alongside an additional two-year warranty for the screw air compressor, encompassing all non-consumable parts to guarantee lasting protection and peace of mind.
Q9. What about the maintenance?
A: We recommend initiating your first maintenance inspection after 500 hours of use. Thereafter, consistent maintenance should be scheduled every 2000-3000 hours, customized to the specific working conditions, ensuring optimal performance and sustained reliability.
Q10. Can machines be run in high-temperature environment?
A: Absolutely, our machines are expertly designed to thrive in high-temperature conditions. They operate with efficiency within a temperature range of -20° to 45° (-4ºF to 113ºF), providing reliable performance even in the most demanding environments.
Q11. Do you offer OEM service?
A: Certainly, we provide comprehensive OEM and ODM services. Our dedicated design team is committed to delivering creative and flexible solutions that align perfectly with your brand vision, ensuring seamless integration with your 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, offering unparalleled reliability and enduring peace of mind for the long haul.
Q13. Will you provide some spare parts for the machines?
A: Absolutely, we assure the provision of essential spare parts for all our machines, enabling efficient maintenance and rapid repairs to ensure uninterrupted operations.
Q14. How about your after-sales service?
A: Our all-encompassing after-sales service includes thorough online guidance for installation and commissioning. For added convenience, we offer the option of sending engineers for on-site training and installation support, ensuring a smooth and successful launch of your operations.
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