Internal Structure Frontside
Internal Structure Backside
Working Principle
Within the elite domain of air compression technology, achieving optimal energy efficiency is paramount. The theoretical energy needed for a single-stage compression is equivalent to the total energy for a multi-stage process. Yet, real-world applications bring forth complexities such as coupling inefficiencies, bearing friction, and viscosity-related cooling effects that elevate power demands. By smartly reducing the compression ratio at each stage, multi-stage systems can notably curb overall power usage, thereby offering superior efficiency over single-stage systems.
Introducing this groundbreaking two-stage screw air compressor-a true marvel of modern engineering. The dual-stage rotary screw design is a testament to innovation, where active and passive screws harmoniously function together. The active screw, empowered by an external force, seamlessly drives the passive screw. This innovative methodology incorporates a low-pressure screw assembly in the initial phase, transitioning flawlessly to a high-pressure screw group in the subsequent phase. Surrounded by a cutting-edge sealing air film, each screw performs at its peak potential. The rotation of the screws orchestrates a magnificent process of air suction, precise pressurization, and efficient exhaust.
First Stage Compression: In the opening act of the two-stage screw air compressor, an intricately designed low-pressure screw assembly deftly compresses the gas. Skillfully guided into the compression chamber via the suction valve, the gas encounters the high-velocity rotation of the screw rotor, setting the groundwork for effective compression and preparing it impeccably for the ensuing stage.
Second Stage Compression: Advancing to this critical phase, the gas navigates into a more compact screw space, dramatically intensifying its temperature and pressure. With exceptional precision, the exhaust valve gracefully opens, releasing the high-pressure gases from the system, culminating the compression sequence with success.
Natural air is expertly drawn into the initial compression stage through a sophisticated air filter, blending effortlessly with an exact amount of lubricating oil. This expertly compressed mixture achieves an interstage pressure. Following compression, the gas flows through a cooling channel, encountering a comprehensive oil mist that significantly lowers its temperature. This cooled gas is then directed into the second-stage rotor, where further compression occurs, achieving the desired final exhaust pressure. In a masterstroke conclusion, the compressor effectively expels the gas via the exhaust valve, completing the entire compression cycle with exemplary precision.
| 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. |
1) Unparalleled Efficiency of PM Motor:Step into a new era of performance with our Permanent Magnet (PM) motor. This unit features an exceptionally wide spectrum of constant torque and weak magnetic ranges, providing up to a remarkable 20-30% enhancement in efficiency compared to traditional motors. Experience the cutting-edge innovation of our permanent magnet motor, which sustains its outstanding efficiency across diverse frequency conditions, ensuring that you receive consistently exceptional and reliable performance every time.
2) Maintenance-Free Motor:Ingeniously designed without bearings, our permanent magnet motor eliminates the tedious and costly process of bearing maintenance and replacements. It promises a truly maintenance-free experience, ensuring uninterrupted operation, maximum uptime, and significantly reduced operational expenses.
3) Advanced Integrated Frequency Converter:Equipped with the most advanced frequency system in China, our compressor delivers precision and an extensive speed control range that intuitively aligns with actual gas demands. This system demonstrates exceptional energy-saving capabilities, ensuring your energy expenditures are minimized while maximizing operational efficiency.
4) Zero Transmission Loss:Experience engineering excellence with our innovative, seamlessly integrated shaft connection between the permanent magnet motor and compressor. This eliminates the need for traditional couplings and transmission components, achieving an unrivaled 100% transmission efficiency and setting a new benchmark in energy conservation.
5) Variable and Soft Start MechanismsProtect your power grid infrastructure with our sophisticated variable frequency start and soft start functionalities. These advanced mechanisms reduce impact, extending the lifespan of electrical components, preventing potential damage, and optimizing performance stability for enhanced reliability.
6) Enhanced Energy Conservation:Revolutionize your energy savings with our frequency conversion range that spans from a remarkable 25% to 100%, surpassing the traditional 50% to 100% range. This unit achieves more than 30% greater energy efficiency compared to fixed-speed compressors, with even superior savings in systems experiencing fluctuating gas demands.
7) Unique Two-Stage Compression Air End:Unlock the potential of our two-stage compression screw design, featuring integrated first and second-stage rotors housed within a single casing. Driven by precision-engineered gears, each stage optimizes linear speeds, significantly elevating overall compression efficiency to unprecedented levels.
8) Innovative Internal Spray Curtain Cooling:Leverage the efficiency of our high-performance internal spray curtain cooling, achieving a significant reduction in compressed air temperature. This state-of-the-art technique attains near-isothermal compression, reducing pressure loss and dramatically enhancing compression efficiency for exceptional results.
9) Minimized Internal Leakage:The breakthrough two-stage compression design reduces each stage's compression ratio, effectively minimizing internal leakage. This advancement enhances volumetric efficiency, ensuring optimal performance and unwavering reliability.
10) Superior Noise Reduction:Our pioneering two-stage compression not only lowers the compression ratio for improved efficiency but also significantly reduces noise levels, particularly during unloading. This innovation creates a more pleasant and quieter working environment, enhancing the overall user experience.
11) Effortless Maintenance and Service:Our two-stage compressor is designed for ease of maintenance, aligned with the simplicity of single-stage units, apart from the screw air end. It ensures user-friendly operation and straightforward serviceability, elevating the overall maintenance experience.
12) Door Panels are Removable:Constructed with sound-dampening metal panels and premium sound-absorbing materials, this unit adheres to international noise standards. The removable door panels provide extensive 270-degree access, greatly simplifying maintenance tasks, optimizing service efficiency, and ensuring compliance with global noise standards.
1. Unbeatable Price Advantage That Can't Be Overlooked
We empower our esteemed clients with highly competitive, factory-direct pricing. This ensures you maintain a strategic edge over competitors in the ever-evolving market landscape, driving your success.
2. Seamless and Effortless Direct Transactions
Through direct factory supply of all our superior products, we offer you the most cost-effective solutions on the market, eliminating unnecessary overheads and enhancing value.
3. Extensive and Comprehensive OEM & ODM Services
Armed with a wealth of production expertise and impeccable management capabilities, we are committed to meeting all your OEM/ODM service needs with unmatched accuracy and unwavering dedication.
4. Tailored and Precision Customization
Experience our bespoke customization services designed for non-standard, export, voltage/power/pressure specifications. Together, we can create the perfect solution tailored to your specific and unique requirements.
5. Flexible Small Order Options
Begin with a small trial order to experience firsthand the exceptional quality and unwavering reliability our products consistently deliver, setting a new standard in excellence.
6. Swift and Expedited Rapid Delivery
We commit to delivering our premium products promptly and efficiently, ensuring your operations remain uninterrupted and continue to run smoothly and efficiently.
7. Robust and Comprehensive Authorization
For our esteemed distributors, we offer complete authorization certification, empowering you to confidently promote and market our prestigious SANZHI brand products with assurance and pride.
Sanzhi (Henan) Compressor Co., Ltd. shines as a beacon of excellence in the manufacturing landscape, lauded for our profound expertise and innovation in crafting screw air compressors and screw vacuum pumps. Over the past decade, we've meticulously refined our skills and expanded our repertoire to present a rich spectrum of premium solutions. Our distinguished lineup includes standard and low-pressure screw air compressors, trailblazing permanent magnet frequency conversion screw air compressors, and advanced two-stage compression screw air compressors. Our specialized offerings extend to screw air compressors for laser cutting, dynamic single-tank and double-tank mobile screw air compressors, versatile electric and diesel mobile screw air compressors, and cutting-edge screw vacuum pumps, among an array of pioneering advancements.
Within our cutting-edge production facility, we achieve exceptional operational efficiency, thanks to our meticulously crafted lean multi-air compressor assembly lines. Supported by a passionate team of over 50 exceptional employees, our operations thrive through relentless enhancements of management systems, including ERP, with the goal of reducing lead times and ensuring swift delivery of unparalleled quality products.
With steadfast commitment to quality management, our factory proudly bears the ISO9001 certification. We adhere to strict and rigorous quality management protocols, ensuring each machine undergoes exhaustive inspections, from material checks to production evaluations, culminating in thorough pre-delivery assessments.
Our comprehensive customer service journey spans every phase from pre-sales to after-sales. Before purchase, we offer expert consultations, guiding you to select the ideal air equipment. We provide extensive customization options, including bespoke OEM products tailored to meet specific dealer needs. Post-purchase, our highly trained sales and service team stands ready to promptly address and fulfill any customer requests.
At Sanzhi (Henan) Compressor Co., Ltd., we are unwavering in our commitment to delivering superior, dependable products while nurturing lasting customer relationships. Our dedication to efficient delivery, exceptional quality, and competitive pricing firmly establishes us as your esteemed partner in acquiring the most effective compressed air solutions.
Strategically located in Xinzheng City, Henan Province, China, our factory offers complimentary transportation from Xinzheng International Airport, situated just 30 kilometers away. This convenient one-hour journey ensures a warm and welcoming introduction to our esteemed company!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a distinguished manufacturer with a specialization in screw air compressors, proudly boasting over a decade of industry excellence and innovation.
Q2. How do you control quality?
A: 1. We perform stringent inspections on all raw materials, ensuring they meet our exceptional quality standards.
2. We exercise strict control over our installation processes to uphold our superior standards.
3. Each machine undergoes a minimum of five hours of continuous testing prior to dispatch, guaranteeing exceptional reliability.
Q3. What information must I provide to get the suitable machine?
1. Desired air delivery capacity (Unit: CFM or m³/Min)
2. Required working pressure (Unit: PSI, Bar, or Mpa)
3. Voltage and frequency in your country (V/Hz)
4. Additional accessories needed, such as air tanks, filters, or air dryers.
Provide us with this precise information, and we will craft a tailored solution to perfectly suit your needs!
Q4. What is the general unit conversion?
1Bar = 0.1Mpa = 14.5PSI
1m³/min = 35.32cfm
1KW = 1.34HP
Q5. What are the available voltage options for air compressors?
A: Sanzhi air compressors are engineered with unparalleled precision, offering a seamless fit for a diverse range of voltage requirements. Whether it's standard options like 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, or 440v/60hz/3p, our compressors deliver flawlessly. For unique specifications, we specialize in bespoke customization services, providing a tailored solution meticulously crafted to meet your precise needs.
Q6. How long is the delivery time?
A: For standard voltage orders, our efficient logistics ensure dispatch within an exceptional 15 working days post order confirmation. For non-standard specifications, our attentive sales team is poised to offer personalized assistance, ensuring your needs are met without delay.
Q7. What's the payment term?
A: Our payment terms are designed for maximum convenience and flexibility, offering 30% T/T in advance, 40% T/T before shipment, and 30% T/T upon receipt of the B/L copy. Choose between USD or RMB transactions for a smooth and tailored payment experience.
Q8. How about your warranty?
A: We offer an impressive one-year full machine warranty, complemented by an additional two-year warranty for the screw air compressor. Note that consumable parts are not covered under the warranty.
Q9. What about the maintenance?
A: Optimal compressor performance is achieved with the first maintenance at 500 operational hours, followed by regular maintenance every 2000-3000 hours. This schedule can be adjusted based on your specific environmental conditions to maintain peak efficiency.
Q10. Can machines be run in high-temperature environment?
A: Certainly! Our compressors are expertly crafted to perform exceptionally in high-temperature environments, operating effectively across a temperature span of -20° to 45° (-4ºF to 113ºF), ensuring consistent reliability and efficiency.
Q11. Do you offer OEM service?
A: Absolutely! We are proud to offer extensive OEM & ODM services. Our expert design team is ready to fulfill customized orders, ensuring your unique requirements and innovative ideas come to life with precision.
Q12. How long could your air compressor be used?
A: Our air compressors are meticulously engineered for exceptional durability, offering steadfast reliability and performance that transcends expectations, with a lifespan exceeding 10 years of superior service.
Q13. Will you provide some spare parts for the machines?
A: Absolutely, we ensure seamless machine operation by providing essential spare parts whenever necessary, granting you peace of mind and ensuring continuous productivity.
Q14. How about your after-sales service?
A: We provide an extensive array of after-sales services, including online installation guidance and commissioning, as well as on-site support from our expert engineers for training and installation, ensuring complete satisfaction and operational success.
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