Introducing the revolutionary Low-Pressure Compressor by Sanzhi (Henan) Compressor Co., Ltd.! This cutting-edge Two-Stage Compression Permanent Magnet Variable Frequency Drive Screw Air Compressor has been masterfully engineered to redefine industrial excellence. Available in a comprehensive range of power options-including 15KW, 22KW, 30KW, 37KW, 45KW, 55KW, 75KW, 90KW, 110KW, 132KW, 160KW, 185KW, 200KW, and 250KW-this versatile marvel guarantees unparalleled efficiency and reliability. Elevate your operations with this state-of-the-art solution, meticulously crafted to meet the diverse and demanding requirements of today's modern industries. Experience heightened performance and seamless integration with Sanzhi's Professional Industrial High Efficiency Twin-Stage Screw Air Compressor, available in an array of power configurations to suit your every need. Engineered to perfection, this compressor stands as a testament to innovation, ensuring your business operates at peak efficiency. Trust Sanzhi to deliver unmatched quality and technological advancement in every unit, empowering your industry to achieve new heights of productivity and sustainability.
Detailed Internal Structure - Frontside View
Detailed Internal Structure - Backside View
Advanced Working Principle
In a perfectly optimized air compression scenario, the energy required for single-stage pressure transmission equates to the cumulative energy demands of multi-stage compression. However, in real-world applications, factors such as coupling power losses, bearing friction, and the cooling effects of fluid viscosity necessitate higher operational power. By reducing the compression ratio at each stage, these inefficiencies are minimized. Therefore, the overall power consumption for multi-stage compression is significantly lower than that of single-stage compression.
Our state-of-the-art two-stage screw air compressor incorporates a highly sophisticated twin-stage rotary screw mechanism. This pioneering system features an active screw in each stage that drives a passive screw through a robust external power transmission system. The first stage employs a low-pressure screw group, while the second stage utilizes a high-pressure screw group. Each screw is meticulously encapsulated within a sealing air film. During operation, the gas undergoes a tri-phase process-suction, pressurization, and exhaust-guaranteeing unmatched compression efficiency.
First Stage Compression: During the initial stage of our two-stage screw air compressor, gas is efficiently compressed using a low-pressure screw group. Initially drawn into the compression chamber through the suction valve, the high-speed rotation of the screw rotor compresses the gas before it is seamlessly transferred to the second stage.
Second Stage Compression: In the second stage, the screw group further compresses the gas within a more confined screw space, achieving higher temperatures and pressures. The process culminates as the exhaust valve opens, releasing the high-pressure gases from the system and completing the compression cycle.
Natural air is first drawn through the air filter into the initial compression stage, where it merges with a small quantity of lubricating oil. This mixture is compressed to an intermediate pressure. The gas then moves into a cooling channel, interacting with a significant amount of oil mist, which dramatically lowers its temperature. The cooled, compressed gas subsequently advances to the second-stage rotor for final compression to ultimate exhaust pressure. Fully compressed, the gas exits the system through the exhaust valve, completing the compression cycle.
1) High efficiency of PM motor:Experience unrivaled efficiency with our state-of-the-art permanent magnet motor. Its extensive constant torque and weak magnetic range enhances efficiency by 20-30% compared to traditional motors. Even when operating off the rated frequency, this motor maintains superior efficiency, ensuring peak performance at all times.
2) Two-stage compression unique air end:Introducing our groundbreaking two-stage compression screw machine with a uniquely designed air end. Integrating the first and second-stage compression rotors within a single casing, driven directly by gears, each rotor achieves optimal linear speed, thus maximizing compression efficiency.
3) Integrated frequency converter:Outfitted with China's leading frequency system, our air compressor offers extensive speed regulation and exceptional precision. Users can adjust the frequency to meet actual gas demands, leading to significant energy savings and enhanced operational efficiency.
4) Reduce internal leakage:Utilizing two-stage compression technology reduces the compression ratio for each stage, thus minimizing internal leakage from the high-pressure end to the low-pressure end and considerably boosting volumetric efficiency.
5) Variable frequency start and the soft startof the motor are achieved, significantly reducing the impact on power grid equipment and preventing potential damage to electrical components.
6) Reduce energy consumption:Our frequency conversion operates from 25% to 100%, a remarkable improvement over the standard 50% to 100% range. Compared to fixed-speed air compressors, energy savings can exceed 30%. Even against typical variable frequency compressors, it offers approximately 5% more energy efficiency, with even greater savings for systems facing fluctuating gas demands.
7) No transmission loss:The permanent magnet motor and compressor feature an embedded integrated shaft direct connection structure, making it more compact. With no couplings or transmission parts, the transmission efficiency reaches an unmatched 100%.
8) Air cooling method:Our highly efficient air cooling method provides superb cooling performance, significantly lowering the temperature of compressed air. This near-isothermal compression minimizes pressure loss between stages, reducing the compression ratio and boosting overall efficiency.
9)Smart Touch Controller:Our cutting-edge built-in intelligence requires minimal manual intervention. Featuring a high-precision color electronic screen, it provides clear graphical displays, maintenance alerts, fault warnings, and safety shutdown notifications for seamless operation.
10)Special Type Intake Valve:Automatically controlled opening ensures smooth engine fuel injection and lubricating oil circulation.
Ultra-low oil circuit loss enhances overall efficiency.
The normally open solenoid valve automatically closes during emergency stops to prevent oil injection, ensuring system safety.
11)Excellent Air Filter:Our premium air filter offers outstanding air purification, ensuring a pristine air system with three-stage filtration for superior air quality. It efficiently removes steam and dust, meeting rigorous emission standards.
12)High-Quality Soundproof Cotton:Our compact noise reduction housing, paired with high-quality soundproof cotton, minimizes operational vibration and significantly reduces noise, ensuring a quieter, more efficient workspace.
13) Motor maintenance-free:Our permanent magnet motor is free of internal bearings, eliminating the need for motor bearing maintenance and replacement, thereby reducing long-term maintenance costs and enhancing reliability.
14) Noise reduction:Experience the epitome of tranquility with our revolutionary two-stage compression technology. This advanced system significantly lowers the compression ratio, resulting in a dramatic reduction in operational noise, especially noticeable during unloading. Transform your work environment into a haven of quiet efficiency and boost your productivity like never before with the Sanzhi Professional Industrial High Efficiency Twin-Stage Screw Air Compressor.
15) Effortless Maintenance and Service:Our cutting-edge two-stage compressor unit maintains the familiar structure and systems of a single-stage compressor, with the only modification being the exclusion of the screw air end. This thoughtful design ensures that maintenance and servicing remain straightforward and user-friendly for all. Experience hassle-free upkeep and continuous, optimal performance with the Sanzhi Professional Industrial High Efficiency Twin-Stage 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. Competitive Pricing
Experience unparalleled value and stay ahead in a competitive market by partnering with us. Sourcing directly from Sanzhi (Henan) Compressor Co., Ltd. gives you access to factory-direct prices, ensuring you receive the best possible savings.
2. Direct Transactions
Maximize your cost-efficiency with the assurance of direct transactions. Our products are supplied straight from the factory, guaranteeing both reliability and significant savings.
3. OEM & ODM Services
Leverage our extensive production and management expertise with tailored OEM and ODM services. We ensure that your specific requirements are met to perfection, addressing your unique needs seamlessly.
4. Customized Solutions
We excel in handling non-standard and export orders, tailored to your specific voltage, power, and pressure needs. Share your customization requests with us, and we'll deliver solutions that align perfectly with your requirements.
5. Small Order Acceptance
Start your journey with a small trial order and experience the superior quality of our products. This allows you to ensure complete satisfaction before committing to larger orders.
6. Rapid Delivery
Benefit from our swift and timely delivery services, ensuring your high-quality products arrive promptly. This keeps your operations running smoothly and without interruption.
7. Comprehensive Authorization
Boost your distribution capabilities with our extensive authorization certificates. Confidently market and sell SANZHI brand products, backed by full certification to support your efforts.
Sanzhi (Henan) Compressor Co., Ltd is a distinguished and reputable manufacturer specializing in cutting-edge screw air compressors and screw vacuum pumps. Boasting over a decade of unparalleled industry expertise, we present a versatile and comprehensive product lineup that includes normal pressure and low-pressure screw air compressors, permanent magnet frequency conversion screw air compressors, two-stage compression screw air compressors, screw air compressors specifically designed for laser cutting, and both single-tank and double-tank mobile screw air compressors. Additionally, we provide electric and diesel mobile screw air compressors, as well as state-of-the-art screw vacuum pumps.
Our state-of-the-art production facility features advanced multi-air compressor assembly lines, ensuring exceptional efficiency and precision. Supported by a dedicated team of over 50 highly skilled employees, we continuously enhance our management systems, such as ERP, to significantly reduce lead times and guarantee the swift delivery of premier quality products.
Our meticulously designed management systems are dedicated to upholding the highest quality standards. Proudly certified under the ISO9001 quality management system, we adhere to rigorous quality control protocols. Each machine is subjected to comprehensive inspections at various stages, from material and production checks to pre-delivery evaluations, ensuring unmatched product reliability and excellence.
Our exemplary customer service begins with a pre-sales team that offers expert guidance for selecting the ideal air equipment tailored to diverse facilities. We provide extensive customization options, including appearance and configuration, and create bespoke products to meet specific dealer demands through our OEM services. Our professional sales and service team is always on standby to deliver prompt and efficient post-sales support, ensuring your needs are swiftly addressed.
At Sanzhi (Henan) Compressor Co., Ltd, we are unwavering in our commitment to delivering superior, reliable, and stable products. Dedicated to forging long-term relationships with our clients, we promise efficient delivery, high-quality machinery, and competitive pricing, ensuring you receive the optimal compressed air solution for your requirements.
Located in the picturesque Xinzheng City, Henan Province, China, our factory is conveniently situated just 30 kilometers from Xinzheng International Airport, approximately an hour's drive away. We warmly invite you to visit our facility and experience our exceptional offerings firsthand!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a distinguished manufacturer specializing in screw air compressors, proudly boasting over a decade of industry expertise.
Q2. How do you control quality?
A: 1. Our raw materials undergo rigorous inspection to ensure the highest quality.
2. The meticulous installation process is stringently monitored.
3. Every machine is subjected to a minimum of 5 continuous hours of testing before dispatch to ensure optimal performance.
Q3. What information must I provide to get the suitable machine?
1. Your required air delivery capacity (Unit: CFM or m³/Min).
2. The desired working pressure (Unit: PSI, Bar or Mpa).
3. The voltage and frequency specifications of your country of residence (V/Hz).
4. Any additional accessories needed, such as an air tank, filters, or air dryers.
Share this information with us, and we will tailor a 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 is the available voltage air compressor?
A: Sanzhi offers a diverse array of voltage options including 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p. We also provide customization to cater to your exact specifications.
Q6. How long is the delivery time?
A: For units with standard voltage, we guarantee delivery within 15 working days post order confirmation. For non-standard requirements, please consult our dedicated sales team for precise timelines.
Q7. What's the payment term?
A: Our payment terms are structured as follows: 30% T/T in advance, 40% T/T before shipment, and the remaining 30% T/T upon B/L copy. Payments are accepted in both USD and RMB.
Q8. How about your warranty?
A: We provide an extensive warranty of one year for the entire machine and two years for the screw air compressor, excluding consumable spare parts. Enjoy peace of mind with our reliable warranty coverage.
Q9. What about the maintenance?
A: Initial maintenance is necessary after 500 hours of operation. Subsequent maintenance should be conducted every 2000-3000 hours, contingent on the actual working environment for optimal machine longevity.
Q10. Can machines be run in high-temperature environment?
A: Absolutely, our machines are meticulously engineered to perform efficiently in high-temperature environments, with a working temperature range from -20° to 45° (-4ºF to 113ºF), ensuring reliable operation.
Q11. Do you offer OEM service?
A: Yes, we excel in both OEM & ODM services, supported by our skilled professional design team. We warmly welcome your custom orders and look forward to bringing your vision to life.
Q12. How long could your air compressor be used?
A: Our air compressors are ingeniously designed for durability, typically delivering over 10 years of exceptional service life.
Q13. Will you provide some spare parts for the machines?
A: Certainly, we offer a comprehensive selection of high-quality spare parts to ensure the smooth and efficient operation of your machinery, thereby ensuring longevity and optimal performance.
Q14. How about your after-sales service?
A: We provide unparalleled after-sales support, including thorough online installation and commissioning guidance. Additionally, we can deploy expert engineers to your site for detailed training and precise installation assistance when required.
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