Introducing the groundbreaking Low-Pressure Compressor, a masterpiece of industrial design by Sanzhi (Henan) Compressor Co., Ltd.! Experience the pinnacle of engineering innovation with the Two-Stage Compression Permanent Magnet Variable Frequency Drive Screw Air Compressor. This marvel is ready to set new standards of excellence, offering an exceptionally versatile range of power options to meet all your professional needs: 15KW, 22KW, 30KW, 37KW, 45KW, 55KW, 75KW, 90KW, 110KW, 132KW, 160KW, 185KW, 200KW, and 250KW. Ensuring unmatched efficiency and reliability, this state-of-the-art solution is meticulously crafted to cater to the diverse and rigorous demands of contemporary industries. Elevate your operations to unprecedented heights with this revolutionary compressor, designed to transform and enhance your industrial capabilities, ensuring your business stays at the forefront of innovation and efficiency.
Internal Structure Frontside
Internal Structure Backside
Working Principle
In the sophisticated world of air compression, we aim for an ideal scenario where the energy required for single-stage pressure transmission is nearly equivalent to the combined energy of multi-stage compression. Nevertheless, real-world dynamics such as coupling power losses, friction from bearings, and the cooling effects of fluid viscosity tend to elevate power requirements. By strategically minimizing the compression ratio at each stage, these inefficiencies are mitigated. As a result, the overall power consumption for multi-stage compression stands out as more efficient and significantly lower compared to single-stage compression.
Presenting our groundbreaking two-stage screw air compressor, which boasts an advanced twin-stage rotary screw mechanism. This cutting-edge configuration features an active screw in each stage, which dynamically propels a passive screw through a robust external power transmission system. The process begins with a low-pressure screw group at the first stage, seamlessly transitioning to a high-pressure screw group at the second stage. Each screw is meticulously enveloped within a sealing air film. Throughout operation, the gas experiences a meticulous tri-phase sequence of suction, pressurization, and exhaust, ensuring outstanding compression efficiency.
First Stage Compression: As the initial step in the compression process of our two-stage screw air compressor, the gas is meticulously compressed using a low-pressure screw group. Initially, it is expertly drawn into the compression chamber via the suction valve, where the swift rotation of the screw rotor compresses the gas efficiently, setting the stage for a flawless transition to the second stage.
Second Stage Compression: In the second stage screw group, the gas is subjected to further compression within a more restricted screw space, leading to increased temperatures and pressures. This process reaches its climax with the activation of the exhaust valve, allowing the high-pressure gases to exit the system and successfully conclude the compression cycle.
Natural air is initially drawn through the air filter into the first compression stage, where it combines with a precise amount of lubricating oil. This mixture is compressed to an intermediary pressure before advancing into a cooling channel. Here, the gas engages with a significant oil mist, effectively lowering its temperature. The cooled, compressed gas then advances to the second-stage rotor for its final compression to the ultimate exhaust pressure. The fully compressed gas exits the system through the exhaust valve, marking the successful completion of the compression cycle.
1) High Efficiency of PM Motor:Experience unparalleled efficiency with our state-of-the-art permanent magnet motor. Designed with an extensive constant torque and magnetic range, it eclipses traditional motors with a 20-30% enhanced performance. Even when not operating at its rated frequency, it consistently maintains optimal efficiency, guaranteeing peak performance at all times.
2) Two-Stage Compression Unique Air End:Discover our revolutionary two-stage compression screw machine, boasting a masterfully designed air end. This innovative mechanism, integrating first and second-stage compression rotors within a single casing and driven by gears, allows each rotor to achieve its optimal linear speed, elevating compression efficiency to extraordinary heights.
3) Integrated Frequency Converter: Equipped with China's leading frequency system, our air compressor provides an expansive speed regulation range with remarkable precision. This allows users to finely tune the frequency to match actual gas requirements, resulting in significant energy savings and enhanced operational efficiency.
4) Reduce Internal Leakage:Employing advanced two-stage compression technology, we effectively reduce the compression ratio for each stage. This cutting-edge design minimizes internal leakage from high to low-pressure ends, substantially improving volumetric efficiency, and sets new standards for superior performance.
5) Variable Frequency Start and Soft Start:Our motor's variable frequency start and soft start are expertly implemented to substantially reduce the impact on power grid equipment, safeguarding electrical components against potential damage.
6) Reduce Energy Consumption: Our innovative frequency conversion operates efficiently from 25% to 100%, a substantial improvement over the typical 50% to 100% range. Compared to fixed-speed air compressors, our solution delivers energy savings exceeding 30%. It offers approximately 5% more efficiency even compared to standard variable frequency compressors, with increased savings for systems with fluctuating gas demands.
7) No Transmission Loss: Our groundbreaking design integrates the permanent magnet motor and compressor with a direct shaft connection, ensuring unparalleled compactness. By eliminating couplings and other transmission parts, this approach achieves a remarkable 100% transmission efficiency.
8) Air Cooling Method: Our advanced energy-efficient air cooling technique delivers exceptional cooling performance, significantly reducing compressed air temperatures. This near-isothermal compression minimizes pressure loss between stages, lowers the compression ratio, and dramatically enhances overall system efficiency.
9)Smart Touch Controller: Step into the future of convenience with our cutting-edge smart touch controller. Requiring minimal manual intervention, it features a high-precision color electronic screen, offering clear graphical displays, maintenance information, fault alarms, and safety shutdown alerts, simplifying operations effortlessly.
10)Special Type Intake Valve:With an automated opening control, it ensures smooth engine fuel injection and lubricating oil circulation.
The minimized oil circuit loss significantly enhances overall efficiency.
In emergencies, the normally open solenoid valve automatically closes to prevent oil injection, ensuring maximum system safety.
11)Excellent Air Filter:Our superior air filter excels in air purification, ensuring a pristine air system with an advanced three-stage filtration for impeccable air quality. It effectively removes steam and dust, meeting even the strictest emission standards.
12)High-Quality Soundproof Cotton:Our expertly crafted noise reduction housing, combined with premium soundproof cotton, significantly dampens operational vibrations and enhances noise reduction, ensuring a quieter, more efficient workspace.
13) Motor Maintenance-Free:Our advanced permanent magnet motor, brilliantly designed without internal bearings, completely eliminates the need for motor bearing maintenance and replacement. This innovative approach not only slashes long-term maintenance costs but also significantly enhances the overall reliability of the system.
14) Noise Reduction:Immerse yourself in a realm of tranquility with our state-of-the-art two-stage compression technology. This cutting-edge system masterfully reduces the compression ratio, substantially lowering operational noise levels, especially during unloading phases. Enjoy a quieter, more efficient work environment that naturally enhances productivity with the Professional Industrial Screw Compressor, an exceptional innovation by Sanzhi.
15) Effortless Maintenance and Service:Our revolutionary two-stage compressor unit cleverly maintains the familiar structure and systems of a single-stage compressor. By simply omitting the screw air end, we ensure that maintenance and service remain straightforward and accessible for everyone. Experience effortless upkeep and enjoy consistent, peak performance with Sanzhi's Professional Industrial Screw 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. Competitive Pricing
Join forces with Sanzhi (Henan) Compressor Co., Ltd. to unlock unbeatable value! Our factory-direct pricing is not just competitive; it's transformative, placing you at the forefront of the marketplace where every dollar counts.
2. Direct Transactions
Experience unparalleled cost efficiency and peace of mind with direct transactions. Our products transition seamlessly from our factory floor to your hands, ensuring you enjoy the most cost-effective and reliable solutions available.
3. OEM & ODM Services
Leverage our expansive production and management skills. We provide unparalleled OEM and ODM services tailored to your exact requirements, ensuring that your unique needs are met with unmatched accuracy and expertise.
4. Customized Solutions
Our specialty lies in non-standard and export orders. We adeptly cater to unique voltage, power, and pressure specifications. Share your customization needs with us, and witness our dedication to creating solutions that perfectly fit your criteria.
5. Small Order Acceptance
Embark on your journey with us through a small trial order that exemplifies the superior quality of our products. Experience satisfaction firsthand, paving the way for larger, confidence-filled orders.
6. Rapid Delivery
Enjoy the peace of mind that comes with our swift, efficient delivery service. We promise timely arrival of your premium products, maintaining the seamless flow of your business operations without interruption.
7. Comprehensive Authorization
Enhance your distribution capabilities with our complete authorization certificates. Market and sell SANZHI brand products with confidence, backed by comprehensive certification that supports your business growth.
Sanzhi (Henan) Compressor Co., Ltd is a prestigious leader in the manufacturing of innovative screw air compressors and vacuum pumps. With more than ten years of unrivaled expertise, we present a diverse and extensive range of products. Our offerings include normal and low-pressure screw air compressors, permanent magnet VFD screw compressors, and cutting-edge two-stage compression screw air compressors. Additionally, our range features laser-cutting specific screw air compressors and both single-tank and double-tank mobile screw air compressors. Whether electric or diesel-powered, our mobile options and our advanced screw vacuum pumps ensure that we meet all industry needs.
Our cutting-edge production facility is equipped with advanced multi-air compressor assembly lines that guarantee outstanding efficiency and precision. Our committed team of over 50 skilled professionals continuously enhances our management systems, including ERP, to significantly reduce lead times and ensure the swift delivery of premium quality products.
Our meticulously structured management systems pledge to uphold the highest quality standards. With the prestigious ISO9001 quality certification, we implement stringent quality control protocols. Each machine undergoes detailed inspections at every stage-starting from material validation, continuing through production scrutiny, to pre-delivery evaluations-ensuring unmatched product reliability and excellence.
Our exemplary customer service begins with a pre-sales team providing expert guidance to select optimal air equipment tailored for various facilities. We offer broad customization options, including design and configuration, and develop bespoke products through our specialized OEM services to meet distinct dealer requirements. Our professional sales and service team remains ready to deliver prompt, efficient post-sales support, ensuring your needs are swiftly met.
At Sanzhi (Henan) Compressor Co., Ltd, we are unwavering in our commitment to providing superior, reliable, and consistent products. We are devoted to cultivating lasting relationships with our clients, guaranteeing efficient delivery, superior-quality machinery, and competitive pricing, thereby ensuring you receive the ideal compressed air solution for your unique needs.
Situated in the charming Xinzheng City, Henan Province, China, our factory enjoys a strategic location just 30 kilometers from Xinzheng International Airport, a mere hour's drive away. We warmly welcome you to visit our facility and witness our remarkable offerings firsthand!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a prominent manufacturer of screw air compressors, proudly offering over ten years of industry mastery.
Q2. How do you control quality?
A: 1. Our raw materials undergo comprehensive inspections to guarantee the highest quality.
2. The precise installation process is rigorously supervised.
3. Each machine is rigorously tested for a minimum of 5 continuous hours before delivery to ensure peak performance.
Q3. What information must I provide to get the suitable machine?
1. Your required air delivery capacity (in CFM or m³/Min).
2. The desired working pressure (in PSI, Bar, or Mpa).
3. The voltage and frequency specifications of your location (V/Hz).
4. Any additional accessories required, such as an air tank, filters, or air dryers.
Share these details with us, and we will craft an ideal solution tailored just for you!
Q4. What is the general unit conversion?
1Bar = 0.1Mpa = 14.5PSI
1m³/min = 35.32cfm
1KW = 1.34HP
Q5. What is the available voltage air compressor?
A: Sanzhi is proud to present a versatile selection of voltage options meticulously designed to cater to your unique needs, including options such as 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p. Effortlessly customize your equipment to perfectly align with your specific applications, ensuring optimal functionality.
Q6. How long is the delivery time?
A: Enjoy the benefits of rapid fulfillment; our standard voltage units are prepared for dispatch within 15 working days following order confirmation. For bespoke configurations, our dedicated sales team stands ready to assist you with delivery solutions tailored to meet your needs.
Q7. What's the payment term?
A: We offer flexible payment terms designed for your convenience, starting with an initial 30% T/T payment in advance, followed by 40% T/T before shipment, and concluding with a final 30% T/T after receiving the B/L copy. Transactions can be completed in both USD and RMB.
Q8. How about your warranty?
A: Enjoy peace of mind with our comprehensive warranty package, featuring one-year coverage for the entire machine and an extended two-year warranty specifically for the screw air compressor, excluding consumable spare parts. This ensures reliable performance and support.
Q9. What about the maintenance?
A: Initiate maintenance after 500 operational hours, and continue to maintain optimal performance with subsequent servicing every 2000-3000 hours. Adjust your maintenance schedule based on actual working conditions to ensure maximum efficiency and longevity.
Q10. Can machines be run in high-temperature environment?
A: Absolutely, our machines are engineered to excel in high-temperature environments, operating smoothly within a broad temperature range from -20° to 45° (-4ºF to 113ºF), thus ensuring consistent and reliable performance under the most demanding conditions.
Q11. Do you offer OEM service?
A: Certainly, we specialize in providing OEM & ODM services, supported by our expert design team. We eagerly welcome bespoke orders, bringing your custom visions to life through our exceptional design capabilities and dedication to quality.
Q12. How long could your air compressor be used?
A: Our air compressors are meticulously crafted for unmatched durability and longevity, typically delivering over a decade of reliable service life, ensuring sustained performance and exceptional value over time.
Q13. Will you provide some spare parts for the machines?
A: Certainly, we provide a comprehensive selection of top-quality spare parts, ensuring your machinery operates seamlessly and efficiently for extended periods. This maximizes longevity and maintains peak functionality.
Q14. How about your after-sales service?
A: Experience exceptional after-sales service with our comprehensive online installation and commissioning support. Additionally, benefit from the expertise of our skilled engineers, who offer onsite training and precise installation assistance whenever necessary, ensuring optimal operation of your equipment.
){kind=link}