Unlock new horizons of industrial excellence with the Large Power Oil-Lubricated Screw Compressor, proudly presented by Sanzhi (Henan) Compressor Co., Ltd., the distinguished leader in China's compressor industry. Embrace the advantage of factory-direct pricing on this state-of-the-art Permanent Magnet Variable Frequency Two-Stage Screw Air Compressor. Masterfully engineered to provide exceptional energy conservation and superior efficiency, this compressor is equipped with top-tier High-Quality Centrifugal Fans. Establish a new standard of reliability and performance with this stationary compressor, crafted for the most demanding industrial scenarios. Amplify your operational capabilities with Sanzhi's 185kw High Volume Two-Stage Screw Air Compressor, renowned for its remarkable durability and consistency. Experience the zenith of efficiency, reliability, and cost-effectiveness with Sanzhi's sophisticated compressor technology, precisely designed to propel your industrial operations to new heights of performance and sustainability.
Internal Structure Frontside
Internal Structure Backside
Working Principle
Imagine an air compression wonderland where the energy for a single-stage compression perfectly aligns with that of a multi-stage process. Yet, reality introduces variables like coupling transmission inefficiencies, bearing friction, and fluid viscosity cooling, all raising energy consumption. To elevate efficiency, we must strategically reduce the compression ratio at each phase, ensuring that the collective power used in multi-stage compression triumphs over that of a single-stage operation.
The two-stage screw air compressor is a testament to cutting-edge engineering, featuring an intricate dual rotary screw configuration with both active and passive screws. The active screw is the powerhouse, driven by an external force, turning the passive screw in a seamless dance. The journey begins with a low-pressure screw set in the initial stage, advancing to a high-pressure screw set in the succeeding stage. Each screw is encompassed by an air film seal that enables gas compression through rhythmic cycles of suction, pressurization, and release as the screws elegantly rotate.
First Stage Compression: This essential stage embarks on the gas compression voyage. Gas is gracefully drawn into the screw's compression chamber via the suction valve, where the screw rotor spins with vigor, compressing the gas and smoothly delivering it to the next stage.
Second Stage Compression: In this sophisticated phase, the gas is ushered into a more confined screw chamber, undergoing compression at significantly elevated temperatures and pressures. The exhaust valve then adeptly opens, releasing the high-pressure gas from the system with precision.
The operation begins as ambient air is drawn into the initial stage through an air filter, merging with a hint of lubricating oil in the compression chamber. The concoction is compressed to an intermediate pressure level, subsequently cooled in a channel where it mingles with oil mist, drastically lowering its temperature. This chilled gas is then propelled to the second-stage rotor for further compression to the final exhaust pressure, culminating in the high-pressure gas's elegant release through the exhaust valve, completing the cycle with finesse.
| 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 state-of-the-art system, equipped with a high-speed rotating impeller, masterfully accelerates and decelerates air, ensuring axial entry and swift cooling. It goes beyond the capabilities of traditional air-cooled fans, enabling seamless, continuous operations and substantially extending the service life of your equipment.
1) High Efficiency of PM Motor:Our state-of-the-art permanent magnet motor offers an expanded constant torque and weak magnetic range, delivering an impressive 20-30% increase in efficiency over standard motors. It consistently achieves superior performance, even when operating above the rated frequency, ensuring optimal results every time.
2) Maintenance-Free Motor:Ingeniously designed without internal bearings, our advanced permanent magnet motor eliminates the costly maintenance and replacement challenges that typically come with conventional motor bearings, offering a maintenance-free solution.
3) Integrated Frequency Converter:Equipped with China's foremost frequency system, our compressor demonstrates an extensive and precise speed regulation range. It seamlessly adjusts to actual gas demand, delivering outstanding energy-saving capabilities that enhance efficiency and performance.
4) Zero Transmission Loss:The integrated shaft structure directly connects the permanent magnet motor to the compressor, eliminating couplings and transmission parts, ensuring flawless 100% transmission efficiency for maximum performance.
5) Variable Frequency Start and Soft Start:This feature significantly reduces the impact on power grid equipment, effectively protecting electrical systems from potential damage, thus ensuring reliability and longevity.
6) Reduced Energy Consumption:Our frequency conversion varies from 25% to 100%, surpassing the typical 50% to 100% range. This innovation leads to over 30% energy savings compared to fixed-speed air compressors and approximately 5% more than standard variable frequency models. Greater fluctuations in system gas consumption further amplify these energy-saving effects, optimizing operational costs.
7) Unique Two-Stage Compression Air End:Our uniquely engineered air end integrates first-stage and second-stage compression rotors within a single case, each gear-driven, ensuring ideal linear speed and significantly enhancing overall compression efficiency for superior performance.
8) Innovative Internal Spray Curtain Cooling Method:Our high energy-saving internal spray curtain cooling method provides exceptional cooling, dramatically reducing the temperature of compressed air. Achieving near-isothermal compression, it reduces interstage pressure loss, lowers compression ratios, and boosts overall compression efficiency, redefining cooling 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 and ensuring optimal performance.
10) Noise Reduction:The two-stage compression system effectively reduces the compression ratio, resulting in significantly decreased noise levels, particularly during unloading, offering a quieter and more pleasant working environment.
11) Easy Maintenance and Service:Featuring a two-stage compressor unit, the similarities in systems and structures to single-stage compression make maintenance and user servicing straightforward and convenient, apart from the screw air end, ensuring ease and efficiency.
12) Door panels are removable:The unit's casing, crafted from noise-treated metal plates, features panels with high-density sound-absorbing material, ensuring noise levels meet international standards. The door plate can be opened and removed, offering a 270-degree all-round access for maintenance personnel, facilitating easy access to the unit's interior, enhancing convenience and serviceability.
1. Unrivaled Price Competitiveness
By offering direct ex-factory pricing, we equip our esteemed customers with a formidable competitive edge in their respective markets. This ensures substantial cost savings without compromising on quality, allowing you to confidently dominate your market landscape.
2. Effortless Direct Transactions
Our products are dispatched directly from the factory floor, providing budget-friendly solutions that preserve excellence. With no middlemen involved, the savings are passed onto you, guaranteeing cost-effectiveness and superior quality.
3. Superior OEM & ODM Services
Utilizing cutting-edge production and management capabilities, we deliver exceptional OEM and ODM services tailored to your precise needs. Partner with us to actualize your vision with unmatched precision and superior quality.
4. Bespoke Customization
We invite requests for non-standard, export, and custom orders covering voltage, power, pressure, and more. Connect with us to discuss your specific requirements, and we will engineer an ideal solution tailored to your distinct specifications.
5. Embracing Small Order Requests
Start with a small trial order to experience the superb quality of our products firsthand. Discover why clients repeatedly choose SANZHI for outstanding performance and reliability.
6. Expedited and Trustworthy Delivery
Experience the synergy of our premium product range and swift, reliable delivery services. We ensure your orders arrive promptly, maintaining the seamless efficiency of your operations.
7. Extensive Authorization Support
We provide comprehensive authorization certificates to our valued distributors, allowing you to market SANZHI brand products with confidence. Leverage our brand strength to boost sales and enhance your market reputation.
Sanzhi (Henan) Compressor Co., Ltd. stands as an illustrious beacon in the manufacturing realm, celebrated for our unparalleled expertise in crafting high-performance screw air compressors and vacuum pumps. With over a decade of unwavering dedication to innovation, our diverse product array includes standard and low-pressure screw air compressors, the latest permanent magnet frequency conversion models, pioneering two-stage compression units, bespoke compressors tailored for laser cutting, and versatile mobile screw compressors. Our offerings are available in both single and double-tank formats, driven by either electric or diesel power, and complemented by our groundbreaking screw vacuum pumps.
Our production methodologies are the epitome of efficiency and modernity, exemplified by our state-of-the-art multi-air compressor assembly lines. Supported by a proficient team of over 50 dedicated employees, we continually refine our ERP-enhanced management systems, significantly reducing lead times and ensuring the timely delivery of premium products.
Upholding the pinnacle of quality, our manufacturing facility proudly holds the ISO9001 certification-a testament to our unwavering commitment to exceptional quality management. We rigorously enforce comprehensive quality control protocols, ensuring each apparatus undergoes exhaustive material checks, meticulous production evaluations, and thorough pre-dispatch examinations before departing our premises.
Our customer-centric service philosophy is truly unparalleled. Our skilled pre-sales team provides expert guidance in selecting the optimal air equipment, offering extensive customization options in both appearance and configuration. We excel in crafting tailor-made OEM products to meet 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 resolute in our mission to deliver high-performance, reliable products that foster enduring customer relationships. Our streamlined delivery schedules, superior machines, and competitive pricing ensure that each interaction results in exceptional compressed air solutions.
Strategically nestled in Xinzheng City, Henan Province, China, our factory boasts convenient accessibility. We offer complimentary transport from Xinzheng International Airport to our premises, a swift 30-kilometer journey that takes approximately one hour. We warmly invite you to visit us and witness our dedication firsthand!
FAQ
Q1. Are you a trading company or a manufacturer?
A: Proudly, we are a dedicated manufacturer specializing in screw air compressors, with over a decade of expert experience in the industry.
Q2. How do you ensure quality control?
A: 1. We perform thorough inspections on all raw materials.
2. We maintain strict control over installation processes to ensure precision.
3. Each unit undergoes a minimum of 5 hours of continuous and rigorous testing prior to dispatch.
Q3. What details must I provide to obtain the right machine?
1. Specify the desired air delivery capacity (Units: CFM or m³/Min).
2. Outline the necessary working pressure (Units: PSI, Bar, or Mpa).
3. Provide the local voltage and frequency requirements (V/Hz).
4. Indicate any additional accessories needed, such as air tanks, filters, or air dryers.
Share these specifications with us, and we will customize 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 remarkable range of voltage options to suit your exact needs, including 380V/50Hz/3P, 400V/50Hz/3P, 415V/50Hz/3P, 220V/60Hz/3P, 440V/60Hz/3P. Additionally, we provide customized voltage solutions to perfectly meet your unique specifications.
Q6. What is the typical delivery time?
A: Benefit from our exceptionally quick delivery for standard voltage models, boasting a lead time of just 15 working days post order confirmation. For custom non-standard voltage configurations, our adept sales team is on hand to devise delivery schedules that are finely attuned to your distinct requirements, ensuring seamless fulfillment of your needs.
Q7. What's the payment term?
A: Our payment terms are crafted for your convenience: start with a 30% T/T deposit, follow with a 40% T/T payment before dispatch, and complete with the final 30% T/T upon receiving the B/L copy. We accept payments in USD and RMB, aligning with your currency preferences.
Q8. How about your warranty?
A: Embrace assurance with our comprehensive warranty offering: a one-year coverage for the entire machine, along with an extended two-year warranty specifically for the screw air compressor. This covers all non-consumable parts, providing enduring protection and tranquility.
Q9. What about the maintenance?
A: To uphold optimal performance and dependability, initiate maintenance after the initial 500 hours of use. Thereafter, regular maintenance is recommended every 2000-3000 hours, adapted to your specific working conditions.
Q10. Can machines be run in high-temperature environment?
A: Absolutely, our advanced machines are engineered to thrive in high-temperature environments. They operate efficiently in a temperature spectrum that spans from -20° to 45° (-4ºF to 113ºF), ensuring unwavering performance even in challenging climates.
Q11. Do you offer OEM service?
A: Certainly, we proudly provide extensive OEM and ODM services. Our creative design team is committed to developing innovative and versatile solutions meticulously tailored to your specifications, ensuring your brand vision is seamlessly integrated.
Q12. How long could your air compressor be used?
A: Constructed for exceptional durability, our air compressors boast a long-lasting lifespan that extends beyond 10 years, offering consistent reliability and peace of mind for many years ahead.
Q13. Will you provide some spare parts for the machines?
A: Certainly, we assure the continual availability of essential spare parts for all our machinery, enabling efficient maintenance and rapid repairs to ensure uninterrupted operation.
Q14. How about your after-sales service?
A: Our extensive after-sales service includes comprehensive online guidance for installation and commissioning. Additionally, we offer the option of deploying engineers for on-site training and installation assistance, ensuring a smooth and effective initiation of your operations.
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