Internal Structure Frontside
Internal Structure Backside
Working Principle
In the realm of air compression excellence, achieving optimal efficiency is an art where the energy required for single-stage compression mirrors the total energy necessary for multi-stage processes. Yet, the real world presents challenges: inefficiencies in coupling transmission, the friction of bearings, and the viscosity-induced cooling effect all contribute to a rise in operational demands. By strategically optimizing the compression ratio at each stage, we can markedly reduce overall power consumption in multi-stage systems, thus elevating our efficiency beyond single-stage compression's reach.
The two-stage screw air compressor by Sanzhi is an engineering marvel, expertly engineered with a dual-stage rotary screw mechanism that features an innovative partnership between active and passive screws. Energized by an external power source, the active screw ingeniously propels the passive screw. This pioneering design incorporates a low-pressure screw assembly for the initial phase, smoothly transitioning to a high-pressure screw group for the secondary phase. Encased in a state-of-the-art sealing air film, each screw is optimized for peak performance. As the screws rotate, the air is transformed through three vital stages: suction, pressurization, and exhaust, ensuring seamless performance.
First Stage Compression: The initial phase of the two-stage screw air compressor is a marvel of precision, where a specialized low-pressure screw assembly expertly compresses the gas drawn into the compression chamber via the suction valve. The screw rotor's high-speed rotation diligently compresses the gas, setting the stage for the next phase of the compression journey.
Second Stage Compression: As the gas progresses into the second stage, it enters a more confined screw space where its temperature and pressure are dramatically amplified. The exhaust valve opens with precision, releasing high-pressure gases efficiently, marking the triumphant culmination of the compression process.
Natural air is guided with meticulous precision into the first compression stage via an advanced air filter, where it seamlessly merges with an exact measure of lubricating oil. This expertly compressed mixture is driven to an interstage pressure. As the gas travels through a cooling channel, it encounters a cooling oil mist, effectively reducing its temperature. The cooled gas is then propelled into the second-stage rotor, undergoing further compression to achieve the desired final exhaust pressure. In a masterful conclusion, the compressor expertly expels the gas through the exhaust valve, completing the compression cycle with unmatched precision and efficiency.
| 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:Experience a revolutionary leap in performance with our PM motor, featuring an exceptionally broad range for constant torque and weak magnetic fields. Revel in up to a 20-30% increase in efficiency over traditional motors. This cutting-edge permanent magnet motor consistently maintains superior efficiency across fluctuating frequencies, ensuring remarkable and dependable performance.
2) Maintenance-Free Motor:Ingeniously designed, this bearing-free permanent magnet motor eliminates the inconvenience and costs associated with bearing maintenance and replacements. Embrace a truly maintenance-free operation, guaranteeing uninterrupted uptime and significantly reduced operational expenses.
3) Advanced Integrated Frequency Converter:Our compressor is equipped with China's premier frequency system, delivering unmatched precision and a vast speed regulation range. It seamlessly adjusts to real-time gas demands, demonstrating extraordinary energy efficiency and ensuring your energy expenditures are minimized.
4) Zero Transmission Loss:Featuring an innovative, seamless shaft connection between the permanent magnet motor and compressor, this design eliminates traditional couplings and transmission components. The result is an impeccable 100% transmission efficiency, making it a marvel of engineering in energy conservation.
5) Variable and Soft Start MechanismsProtect your power grid infrastructure with our sophisticated variable frequency start and soft start capabilities. By mitigating impact, these mechanisms enhance the lifespan and protection of electrical components, reducing potential damage and optimizing performance stability.
6) Enhanced Energy Conservation:Unlock revolutionary energy savings with a frequency conversion range spanning an impressive 25% to 100%, surpassing the conventional 50%-100% range. This unit delivers over 30% energy efficiency improvement compared to standard fixed-speed compressors, with even greater savings for systems with variable gas demands.
7) Unique Two-Stage Compression Air End:Unleash the power of our two-stage compression screw design, seamlessly integrating first and second-stage rotors within a single casing. Driven by precision-engineered gears, each stage maximizes linear speeds, elevating overall compression efficiency to unprecedented levels.
8) Innovative Internal Spray Curtain Cooling:Leverage the high-efficiency internal spray curtain cooling, which significantly reduces compressed air temperature. This avant-garde technique achieves near-isothermal compression, minimizing pressure loss, and dramatically boosting compression efficiency for unparalleled performance.
9) Minimized Internal Leakage:The groundbreaking two-stage compression design reduces each stage's compression ratio, effectively minimizing internal leakage. This enhancement boosts volumetric efficiency, ensuring peak performance and reliability.
10) Superior Noise Reduction:Our two-stage compression technology not only reduces the compression ratio for improved efficiency but also significantly lowers noise levels, particularly noticeable during unloading, thereby fostering a more serene and quieter working environment.
11) Effortless Maintenance and Service:Engineered with simplicity akin to single-stage units, apart from the screw air end, our two-stage compressor offers user-friendly maintenance. Its straightforward operation ensures effortless serviceability, thus enhancing the overall user experience.
12) Door Panels are Removable:Featuring sound-dampening metal panels lined with premium sound-absorbing materials, this unit meets 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. Unmatched Price Advantage
We provide our valued clients with direct-from-factory pricing that is not only competitive but strategically empowering, allowing you to excel in the dynamic market environment.
2. Effortless Direct Transactions
Through direct factory supply of all our premium products, we offer you the most economically advantageous solutions available.
3. All-Encompassing OEM & ODM Services
Armed with extensive production experience and robust management, we are dedicated to fulfilling all your OEM/ODM service requirements with exceptional precision and commitment.
4. Personalized Customization Options
Discover our custom services tailored for non-standard, export, voltage/power/pressure needs. Partner with us to craft the ideal solution for your distinct specifications.
5. Adaptable Small Order Flexibility
Initiate with a small trial order to experience firsthand the superior quality and consistency our products invariably deliver.
6. Swift and Timely Delivery
We are committed to delivering our top-tier products swiftly, ensuring your operations continue smoothly and efficiently.
7. Strong and Comprehensive Authorization
For our esteemed distributors, we offer full authorization certification, equipping you with the confidence to market and sell our prestigious SANZHI brand products effectively.
Sanzhi (Henan) Compressor Co., Ltd. shines brightly as a distinguished leader in the manufacturing sector, celebrated for our specialized prowess in crafting superior screw air compressors and vacuum pumps. With over a decade of refined expertise, we have broadened our offerings, presenting a vast array of high-caliber solutions. Our prestigious portfolio features screw air compressors designed for normal and low pressure, cutting-edge permanent magnet frequency conversion models, and innovative two-stage compression screw air compressors. We also cater to niche markets with specialized compressors for laser cutting, dynamic single and dual-tank mobile compressors, versatile electric and diesel mobile compressors, and advanced vacuum pumps, alongside a myriad of pioneering solutions.
Within our cutting-edge production facility, we achieve unmatched efficiency through expertly crafted, lean multi-air compressor assembly lines. Empowered by a dedicated team of over 50 extraordinary professionals, our operations thrive by embracing continuous enhancements in management systems such as ERP, which minimize lead times and guarantee the rapid delivery of exceptional quality products.
Our unwavering commitment to quality management is evident in our ISO9001 certification, symbolizing our adherence to stringent quality management practices. Each machine is meticulously vetted through comprehensive inspections, encompassing material verifications, production evaluations, and exhaustive pre-delivery assessments to ensure unparalleled excellence.
Our exceptional customer service journey spans every stage, from pre-sales to post-sales. Prior to purchase, we offer expert consultations to help you select the ideal air equipment. Our extensive customization options include tailored OEM products specifically designed to cater to unique dealer needs. Post-purchase, our proficient sales and service team is on standby to swiftly address and satisfy all customer inquiries and requirements.
At Sanzhi (Henan) Compressor Co., Ltd., delivering unmatched, reliable products while nurturing lasting customer relationships remains our foremost goal. Our steadfast commitment to efficient delivery, outstanding quality, and competitive pricing solidifies our status as your esteemed partner for the most effective compressed air solutions available.
Our factory, strategically situated in Xinzheng City, Henan Province, China, offers complimentary transportation from Xinzheng International Airport, located a convenient 30 kilometers away. This short journey, taking approximately one hour, ensures you receive a warm and gracious welcome to our esteemed company!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a distinguished manufacturer specializing in screw air compressors, with over a decade of proven industry excellence.
Q2. How do you control quality?
A: 1. We conduct thorough inspections of all raw materials, ensuring they meet our stringent quality standards.
2. We maintain rigorous control over installation procedures to uphold superior quality.
3. Every machine undergoes a minimum of five continuous hours of testing before dispatch, ensuring optimal 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 customized solution perfectly tailored to 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 exquisitely crafted to seamlessly meet a vast range of voltage requirements, effortlessly accommodating diverse standards such as 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p. For those desiring a distinctive solution, we provide bespoke customization tailored meticulously to align with your precise specifications, ensuring the perfect solution that caters to your exact needs.
Q6. How long is the delivery time?
A: For standard voltage orders, we guarantee an impressively swift delivery within a mere 15 working days post order confirmation. If your order involves non-standard specifications, our dedicated and responsive sales team is ever ready to offer you personalized support, ensuring your unique needs are met promptly.
Q7. What's the payment term?
A: Our payment terms are designed with extraordinary flexibility, offering a convenient structure of 30% T/T in advance, 40% T/T before shipment, and the final 30% T/T upon receiving the B/L copy. You can choose payments in either USD or RMB, as per your preference.
Q8. How about your warranty?
A: We proudly provide a comprehensive one-year warranty covering the entire machine, along with an additional two-year warranty for the screw air compressor. Please note that consumable spare parts are excluded from the warranty coverage.
Q9. What about the maintenance?
A: To ensure optimal performance, we recommend conducting the initial maintenance after 500 hours of operation. Subsequent maintenance should be scheduled every 2000-3000 hours, customized to suit your specific operational conditions for maximum efficiency.
Q10. Can machines be run in high-temperature environment?
A: Absolutely, our machines are expertly engineered to perform exceptionally even in high-temperature environments, effectively operating within a temperature range of -20° to 45°(-4ºF to 113ºF), ensuring consistent reliability and efficiency regardless of the heat.
Q11. Do you offer OEM service?
A: Yes, indeed! We are excited to offer our OEM & ODM services. Our proficient design team is more than capable of handling customized orders, ensuring your specific requirements and ideas are realized with precision and creativity.
Q12. How long could your air compressor be used?
A: Our air compressors are expertly designed for long-lasting durability, offering unwavering reliability and robust performance that surpasses expectations, providing over 10 years of outstanding service.
Q13. Will you provide some spare parts for the machines?
A: Certainly, we are dedicated to ensuring your machines run smoothly and without interruption. We supply essential spare parts whenever needed, delivering peace of mind and ensuring continuous productivity.
Q14. How about your after-sales service?
A: We offer a comprehensive range of after-sales services, from online guidance for installation and commissioning to deploying our expert engineers for hands-on training and installation support, ensuring your complete satisfaction and operational success.
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