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. Dive into a world of unparalleled efficiency and reliability, embracing the advantage of factory-direct pricing on this cutting-edge Permanent Magnet Variable Frequency Two-Stage Screw Air Compressor. Masterfully engineered to deliver exceptional energy conservation and superior efficiency, this pioneering compressor is equipped with top-tier High-Quality Centrifugal Fans, ensuring unparalleled airflow and cooling. Establish a groundbreaking standard of reliability and performance with this stationary compressor, meticulously crafted to excel in the most demanding industrial scenarios. Elevate your operational capabilities with Sanzhi's 185kw High Volume Two-Stage Screw Air Compressor, celebrated for its outstanding durability and unwavering consistency. Discover the zenith of efficiency, reliability, and cost-effectiveness with Sanzhi's advanced compressor technology, specifically designed to propel your industrial operations to new heights of performance and sustainability.
Internal Structure Frontside
Internal Structure Backside
Working Principle
Envision an exquisite air compression utopia where the energy dynamics of a single-stage compression masterfully emulate that of a sophisticated multi-stage process. Yet, within this idyllic realm, reality presents challenges such as coupling transmission inefficiencies, bearing friction, and the intricacies of fluid viscosity cooling, all contributing to increased energy usage. To enhance efficiency, it is imperative to meticulously reduce the compression ratio at each stage, ensuring that the cumulative power utilized in multi-stage compression surpasses that of a single-stage mechanism.
The two-stage screw air compressor stands as a monument to pioneering engineering, boasting a complex dual rotary screw arrangement with both active and passive screws. The active screw serves as the driving force, energizing the passive screw in a harmonious synergy. The process begins with a low-pressure screw assembly in the initial stage, progressing toward a high-pressure screw assembly in the subsequent stage. Each screw is encased by an air film seal that facilitates gas compression through rhythmic cycles of suction, pressurization, and release, as the screws gracefully dance in rotation.
First Stage Compression: This crucial stage marks the commencement of the gas compression journey. Gas is elegantly drawn into the screw's compression chamber through the suction valve, where the screw rotor spins with dynamic force, compressing the gas and effortlessly channeling it to the next stage.
Second Stage Compression: In this advanced phase, the gas is guided into a more restricted screw chamber, undergoing compression at substantially increased temperatures and pressures. The exhaust valve then operates with precision, releasing the high-pressure gas from the system with meticulous accuracy.
The operation initiates as ambient air is drawn into the initial stage via an air filter, merging with a touch of lubricating oil within the compression chamber. This blend is compressed to an intermediate pressure level, subsequently cooled within a passage where it merges with oil mist, significantly reducing its temperature. This cooled gas is then driven to the second-stage rotor for further compression to the final exhaust pressure, culminating in the refined release of high-pressure gas through the exhaust valve, completing the cycle with impeccable elegance.
| 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 transcends 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. Unbeatable Price Advantage
Through our direct ex-factory pricing model, we empower our valued clientele with a robust competitive advantage in their markets. Enjoy significant cost savings while maintaining exceptional quality, enabling you to lead your market with confidence and prowess.
2. Seamless Direct Transactions
Our products are delivered straight from the production line, ensuring cost-effective solutions that uphold excellence. With the elimination of intermediaries, savings are directly transferred to you, ensuring affordability paired with top-notch quality.
3. Premier OEM & ODM Services
Armed with state-of-the-art production and management prowess, we offer exceptional OEM and ODM services tailored to your specific requirements. Collaborate with us to bring your vision to life with unparalleled precision and quality.
4. Tailored Customization
We welcome inquiries for non-standard, export, and custom orders spanning voltage, power, pressure, and beyond. Reach out to discuss your unique requirements, and we will craft a perfect solution tailored to your distinct specifications.
5. Welcoming Small Orders
Initiate with a small trial order to personally experience the outstanding quality of our products. Discover the reasons why clients consistently choose SANZHI for remarkable performance and dependability.
6. Rapid and Reliable Delivery
Immerse in the harmony of our exceptional product lineup and swift, dependable delivery services. We ensure your orders are delivered promptly, sustaining the uninterrupted efficiency of your business operations.
7. Comprehensive Authorization Support
We offer extensive authorization certificates to our esteemed distributors, empowering you to market SANZHI brand products with assurance. Harness our brand's strength to amplify sales and elevate your market standing.
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 the vibrant Xinzheng City, Henan Province, China, our factory boasts convenient accessibility for all visitors. We offer complimentary transport from Xinzheng International Airport to our premises-a swift 30-kilometer journey taking 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 specializes in providing an exceptional array of voltage options to precisely match your specific requirements. Choose from our versatile selection including 380V/50Hz/3P, 400V/50Hz/3P, 415V/50Hz/3P, 220V/60Hz/3P, and 440V/60Hz/3P. We also offer bespoke voltage solutions, carefully tailored to align perfectly with your unique specifications, ensuring unmatched adaptability for your operational needs.
Q6. What is the typical delivery time?
A: Experience the advantage of our remarkably swift delivery for standard voltage models, with a lead time of just 15 working days following order confirmation. For bespoke non-standard voltage configurations, our skilled sales team is dedicated to crafting delivery schedules that are meticulously aligned with your individual needs, guaranteeing a seamless and timely fulfillment of your expectations.
Q7. What's the payment term?
A: Our payment terms are thoughtfully designed for your ease and comfort: begin with a 30% T/T deposit, proceed with a 40% T/T payment before dispatch, and conclude with the final 30% T/T upon receiving the B/L copy. Payments can be made in USD or RMB, accommodating your preferred currency choice.
Q8. How about your warranty?
A: Revel in the peace of mind offered by our comprehensive warranty coverage: a full one-year warranty on the entire machine, supplemented by an extended two-year warranty specifically for the screw air compressor. This extensive warranty encompasses all non-consumable parts, ensuring enduring protection and tranquility.
Q9. What about the maintenance?
A: To sustain peak performance and reliability, initiate maintenance after the first 500 hours of operation. Thereafter, regular maintenance is recommended every 2000-3000 hours, carefully adjusted to suit your specific working conditions and ensure optimal functionality.
Q10. Can machines be run in high-temperature environment?
A: Absolutely, our sophisticated machines are engineered to excel in high-temperature environments. They consistently operate efficiently within a wide temperature range from -20° to 45° (-4ºF to 113ºF), guaranteeing steadfast performance even in the most demanding climates.
Q11. Do you offer OEM service?
A: Certainly, we take pride in offering a broad spectrum of OEM and ODM services. Our innovative design team is dedicated to crafting inventive and versatile solutions that are meticulously customized to your exact requirements, ensuring seamless integration with your brand's vision.
Q12. How long could your air compressor be used?
A: Engineered for outstanding durability, our air compressors offer a robust lifespan that extends well beyond 10 years. This ensures consistent reliability and peace of mind for many years to come, providing enduring service and support.
Q13. Will you provide some spare parts for the machines?
A: Certainly, we guarantee the availability of essential spare parts for all our machinery, facilitating efficient maintenance and prompt repairs to ensure uninterrupted operation and minimize downtime.
Q14. How about your after-sales service?
A: Our comprehensive after-sales service encompasses thorough online guidance for installation and commissioning. Additionally, we offer the option of dispatching engineers to provide on-site training and installation support, ensuring a seamless and efficient start to your operations.
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