30% Energy Saving Low Noise Industrial VSD Two-Stage Compression Screw Type Air Compressors, 380V, 50Hz-200Hz, Air Cooled, AC Power, Permanent Magnet Frequency Conversion, Suitable for Industry Sectors with high air consumption
Detailed Examination of the Frontside Internal Structure
Comprehensive Insight into the Backside Internal Structure
Innovative Working Principle
In the ideal scenario of air compression, the energy required for single-stage pressure transmission equates to the cumulative energy needed for multi-stage compression. In reality, due to factors such as coupling transmission losses, bearing friction, and the viscosity's cooling effect, the actual operational power increases. By minimizing the compression ratio at each stage, we can lower the overall power consumption in multi-stage compression, making it more efficient than single-stage compression.
The two-stage screw air compressor boasts a sophisticated dual-stage rotary screw system, with each stage featuring an active and a passive screw. The active screw drives the passive screw using an external power source. The first stage incorporates a low-pressure rate screw configuration, whereas the second stage employs a high-pressure rate screw configuration. Encircling each screw is a meticulously designed sealing air film. During rotation, air undergoes three pivotal processes: suction, pressurization, and exhaust.
First Stage Compression: The initial stage of the two-stage screw air compressor leverages a low-pressure rate screw configuration, where the gas is drawn into the compression chamber via the suction valve. The high-speed rotation of the screw rotor compresses the gas, which is then transferred to the subsequent stage for further compression.
Second Stage Compression: In this critical stage, the gas is funneled into a more compact screw space, subjecting it to elevated temperatures and pressures. The exhaust valve then facilitates the expulsion of the high-pressure gases from the system, completing the second stage of compression.
Natural air is initially drawn into the first compression stage through an air filter, where it merges with a modest amount of lubricating oil. This mixture is then compressed to an interstage pressure. Post-compression, the gas traverses a cooling channel filled with significant oil mist, which dramatically lowers its temperature. This cooled gas enters the second-stage rotor for further compression, achieving the final exhaust pressure before being expelled through the exhaust valve, thus completing the entire compression 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. |
1) Unparalleled Efficiency of PM Motor:Experience the cutting-edge efficiency of our permanent magnet motor, which boasts an expansive constant torque and weak magnetic range. This innovative design ensures 20-30% higher efficiency compared to traditional motors. Even beyond the rated frequency, our PM motor delivers unmatched performance, guaranteeing superior operation at all times.
2) Maintenance-Free Motor:Say goodbye to costly bearing maintenance and replacements with our state-of-the-art permanent magnet motor, meticulously engineered without bearings to provide a truly maintenance-free experience.
3) Advanced Integrated Frequency Converter:Featuring China's premier frequency system, our unit offers extensive speed regulation with outstanding precision. This capability allows it to adapt seamlessly to actual gas demand, delivering remarkable energy savings and optimized performance.
4) Zero Transmission Loss:Our advanced design integrates the permanent magnet motor and compressor via a compact, unified shaft connection. This direct drive structure eradicates couplings and other transmission components, ensuring flawless 100% transmission efficiency.
5) Variable and Soft Start MechanismsOur variable frequency start and soft start mechanisms are designed to minimize impact on power grid equipment, protecting electrical components from potential damage and prolonging their lifespan.
6) Enhanced Energy Conservation:With a frequency conversion range spanning from 25% to 100% (compared to the ordinary 50%-100%), our unit achieves over 30% energy savings versus fixed-speed compressors. This energy efficiency is particularly advantageous for systems with fluctuating gas consumption, delivering substantial cost savings.
7) Unique Two-Stage Compression Air End:Our innovative two-stage compression screw design incorporates both first and second-stage rotors within a single casing. Driven by gears to achieve optimal linear speeds, this design significantly enhances overall compression efficiency.
8) Innovative Internal Spray Curtain Cooling:Utilizing a high-efficiency internal spray curtain cooling method, our system dramatically reduces compressed air temperature, achieving nearly isothermal compression. This approach minimizes pressure loss while enhancing compression efficiency.
9) Minimized Internal Leakage:Our two-stage compression method lowers the compression ratio for each stage, effectively reducing internal leakage and boosting volumetric efficiency.
10) Superior Noise Reduction:Two-stage compression not only cuts down the compression ratio but also significantly reduces noise levels, especially during unloading, ensuring a quieter operational environment.
11) Effortless Maintenance and Service:Designed for convenience, our two-stage compressor's systems and structures are akin to single-stage units. This similarity ensures effortless maintenance and easy usage for users, without compromising performance.
1. Unbeatable Price Advantage
We offer customers remarkably competitive ex-factory prices directly from our facilities, ensuring you maintain a leading edge in the market.
2. Direct Transactions
Our products are supplied straight from the factory, allowing us to present you with the most cost-effective solutions available.
3. Comprehensive OEM & ODM Services
Boasting robust production and management capabilities, we seamlessly fulfill your OEM/ODM service requirements to your utmost satisfaction.
4. Tailored Customization
We embrace non-standard, export, and custom orders for voltage, power, and pressure specifications. Reach out to discuss your specific needs, and we will tailor our solutions to meet your exact demands.
5. Small Order Acceptance
Evaluate the unparalleled quality of our products by starting with a small trial order.
6. Rapid Delivery
We pledge prompt delivery of our premium products, ensuring your operations continue without interruption.
7. Comprehensive Authorization
For our valued distributors, we provide full authorization certification, empowering you to market and sell our prestigious SANZHI brand products with confidence.
Sanzhi (Henan) Compressor Co., Ltd. is a distinguished manufacturer celebrated for its exceptional screw air compressors and screw vacuum pumps. With over a decade of unparalleled industry expertise, we offer an expansive product range encompassing normal pressure and low-pressure screw air compressors, cutting-edge permanent magnet frequency conversion screw air compressors, efficient two-stage compression screw air compressors, specialized screw air compressors for laser cutting, versatile single-tank and double-tank mobile screw air compressors, both electric and diesel mobile screw air compressors, and advanced screw vacuum pumps.
Our cutting-edge production facility embodies the epitome of efficiency, thanks to our sophisticated, lean multi-air compressor assembly lines. Supported by a dedicated team of over 50 skilled employees, we continuously refine our management systems, including ERP, to ensure reduced lead times and prompt delivery of superior-quality products.
Dedicated to excellence, our factory proudly holds ISO9001 certification. We meticulously adhere to rigorous quality management standards, ensuring each machine undergoes comprehensive inspections, from material checks to production evaluations and pre-delivery assessments, guaranteeing unrivaled quality.
We excel in customer service, providing expert pre-sales and after-sales support. Before purchase, we offer professional guidance to help you select the perfect air equipment and provide extensive customization, including bespoke OEM products tailored to meet specific dealer needs. Our committed sales and service team is always on standby to promptly address any post-purchase concerns.
At Sanzhi (Henan) Compressor Co., Ltd., we pledge to deliver superior, dependable products while nurturing long-lasting customer relationships. Our dedication to swift delivery, exceptional quality, and competitive pricing makes us your reliable partner for premium compressed air solutions.
Situated in the bustling city of Xinzheng, Henan Province, China, our factory is conveniently located just 30 kilometers from Xinzheng International Airport. We provide complimentary transportation from the airport to our facility, making your visit seamless and enjoyable. We eagerly anticipate your visit!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a distinguished manufacturer of screw air compressors, boasting over 10 years of industry expertise.
Q2. How do you control quality?
A: 1. We perform stringent inspections on all raw materials.
2. We strictly control our installation procedures.
3. Each machine undergoes a minimum of 5 hours of continuous testing before dispatch.
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 information, and we will customize the perfect solution for you!
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 come in 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p. We also offer further customization options to suit your specific requirements.
Q6. How long is the delivery time?
A: For standard voltage configurations, we ensure a rapid delivery time of just 15 working days following order confirmation. For those with unique or non-standard requirements, our dedicated and knowledgeable sales team is eager to provide tailored assistance.
Q7. What's the payment term?
A: We accept a payment structure of 30% T/T in advance, 40% T/T before shipment, and the final 30% T/T upon receipt of the B/L copy. Transactions can be seamlessly conducted in both USD and RMB.
Q8. How about your warranty?
A: We offer an all-encompassing one-year warranty for the entire machine and an extended two-year warranty specifically for the screw air compressor, excluding consumable spare parts to ensure continuous reliability.
Q9. What about the maintenance?
A: The initial maintenance is recommended after 500 hours of operation. Thereafter, routine maintenance should be scheduled every 2000-3000 hours, adjusted according to the specific working environment to maintain optimal performance.
Q10. Can machines be run in high-temperature environment?
A: Absolutely, our machines are expertly engineered to perform efficiently in high-temperature settings, designed to operate within a temperature range from -20° to 45° (-4ºF to 113ºF).
Q11. Do you offer OEM service?
A: Yes, we proudly offer both OEM and ODM services. Thanks to our expert design team, we welcome and excel at fulfilling customized orders to meet your unique requirements.
Q12. How long could your air compressor be used?
A: Our air compressors are meticulously built for longevity and are designed to provide efficient service for over 10 years.
Q13. Will you provide some spare parts for the machines?
A: Certainly, we supply essential spare parts to ensure the smooth and uninterrupted operation of your machines.
Q14. How about your after-sales service?
A: We provide a comprehensive after-sales service, which includes online installation and commissioning instructions. Additionally, our skilled engineers are available for onsite training and installation support to ensure your complete satisfaction.
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