Introducing the revolutionary Low-Pressure Twin-Stage Compression Permanent Magnet Variable Frequency Electric Drive Screw Compressor from Sanzhi (Henan) Compressor Co., Ltd.! Expertly crafted for the most demanding industrial scenarios, this state-of-the-art Twin-Screw Air Compressor is a paragon of both value and performance. Dive into a versatile array of power configurations ranging from 37KW, 45KW, 55KW, 75KW, 90KW, 110KW, 132KW, 160KW, 185KW, 200KW, up to an impressive 250KW. This energy-efficient titan ensures outstanding efficiency coupled with steadfast reliability. Choose our top-tier compressor to unlock unparalleled quality at an unbeatable price point. Discover the future of air compression technology today!
Meticulously Crafted Internal Structure - Frontside
Intricately Designed Internal Structure - Backside
Advanced Working Principle
In the realm of air compression, a paramount objective is to achieve equilibrium between the energy required for single-stage transmission and the aggregate energy demand across multi-stage compression. Yet, in practice, variables such as coupling inefficiencies, bearing friction, and the viscosity-induced cooling effect compromise this ideal. By astutely decreasing the compression ratio at each stage, these inefficiencies are significantly curbed. Consequently, this innovative approach leads to enhanced overall efficiency and a reduced energy requirement for multi-stage compression relative to single-stage systems.
Introducing our cutting-edge two-stage screw air compressor, which features a revolutionary dual-stage rotary screw arrangement. Each stage comprises an active screw, which is driven by an external power source, and a passive screw, which it propels. The first stage is characterized by a low-pressure screw assembly, while the second stage incorporates a high-pressure screw assembly. Each screw is enveloped in a sealing air film that ensures superior compression. As these screws rotate, they masterfully process the gas through three distinct stages: suction, pressurization, and discharge, achieving unparalleled performance.
First Stage Compression: At this initial phase, the gas is compressed by the low-pressure screw assembly. The gas seamlessly enters the screw compression chamber via the suction valve, undergoing a gradual yet powerful compression initiated by the high-speed screw rotors. This finely tuned process channels the gas towards the next compression phase with impressive efficiency and precision.
Second Stage Compression: During this critical phase, the gas is further compressed within a more restricted screw chamber, leading to the development of heightened temperatures and pressures. This stage culminates with the precise opening of the exhaust valve, which skillfully releases the high-pressure gas from the system, thus optimizing the overall efficiency.
Ambient air, having been purified through an advanced air filter, enters the initial compression stage where it merges with a minimal volume of lubricating oil within the compression chamber. This blend undergoes compression to an intermediate pressure. As the compressed gas navigates through the cooling channel, it encounters a dense mist of oil that dramatically lowers its temperature. The cooled, compressed gas subsequently proceeds to further compression in the second stage rotor, attaining the ultimate exhaust pressure before being efficiently expelled through the exhaust valve, thereby completing the highly effective compression cycle.
1) Unmatched Efficiency with PM Motor:Our cutting-edge permanent magnet motor is meticulously crafted to deliver unparalleled performance. With a broad constant torque and a vast weak magnetic range, it excels with an astonishing 20-30% efficiency boost over standard motors. This ensures peak efficiency across diverse frequencies, consistently guaranteeing superior performance.
2) Innovative Maintenance-Free Motor Design:Crafted with forward-thinking design, our permanent magnet motor is devoid of internal bearings, completely removing the burden of expensive bearing maintenance and replacements. Experience seamless operation with our groundbreaking maintenance-free motor design.
3) Superior Integrated Frequency Converter: Featuring China's finest frequency system, our compressor offers exquisite precision in speed control, adapting seamlessly to actual gas demand. This optimizes energy use while achieving maximum efficiency, setting a new standard for compressors.
4) Fully Eliminated Transmission Loss: With our state-of-the-art integrated shaft design, the permanent magnet motor is seamlessly linked to the compressor. This pioneering, compact design, devoid of couplings and other transmission components, guarantees a flawless 100% transmission efficiency.
5) Advanced Variable Frequency and Soft Start:Our sophisticated variable frequency and soft start technology substantially mitigate the strain on power grid equipment, safeguarding electrical components from potential harm and significantly enhancing the durability of the system.
6) Superior Energy Efficiency: Offering a frequency conversion range spanning from 25% to 100% (compared to the typical 50% to 100%), our system achieves more than 30% energy savings over fixed-speed compressors. It outperforms standard variable frequency compressors by about 5%, with even more impressive savings under fluctuating gas consumption conditions.
7) Distinctive Two-Stage Compression Air End:Our revolutionary two-stage compression screw machine harmonizes both primary and secondary rotors within a unified casing. Driven directly by gears, each rotor obtains optimal linear speed, significantly boosting compression efficiency.
8) Revolutionary Internal Spray Curtain Cooling:Our advanced internal spray curtain cooling technique markedly lowers compressed air temperatures through near-isothermal compression, reducing pressure loss and significantly enhancing overall efficiency.
9) Radically Reduced Internal Leakage:By employing a two-stage compression method, we significantly diminish the compression ratio for each stage, substantially curtailing internal leakage from high to low-pressure ends. This enhancement leads to improved volume efficiency.
10) Remarkable Noise Reduction:Our two-stage compression process proficiently lowers the compression ratio, considerably minimizing operational noise, especially during unloading phases, fostering a quieter and more serene working environment.
11) Seamless Maintenance and Service:The two-stage compressor unit mirrors the systems and structures of single-stage units, apart from the screw air end, simplifying maintenance and guaranteeing effortless use for all users.
| 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 Price Advantage
By bypassing intermediaries, we offer industry-leading ex-factory prices. This strategic advantage ensures you, our esteemed customer, enjoy a significant competitive edge in the market with our attractively priced, top-of-the-line compressors.
2. Direct Transactions
Discover the unmatched reliability of factory-direct transactions, assuring you of high-quality products and exceptional cost-efficiency for all your air compression needs.
3. Tailored OEM & ODM Services
Harness our factory's outstanding production and management capabilities to access bespoke OEM/ODM solutions that are meticulously designed to meet your precise requirements.
4. Bespoke Customization Services
We enthusiastically accommodate orders for non-standard and export specifications, tailored to a wide array of voltage, power, and pressure requirements. Contact us to meet your specific demands with precision.
5. Small Order Acceptance
Evaluate the exceptional performance of our products with a small trial order, ensuring they not only meet but exceed your highest quality expectations.
6. Swift Delivery
Receive the pinnacle of product quality with our steadfast commitment to prompt and reliable delivery, ensuring your operational excellence is sustained without interruption.
7. Comprehensive Authorization
Enhance your sales strategy with our comprehensive authorization certificates, providing you with the assurance and confidence to effectively represent and promote SANZHI brand products.
Sanzhi (Henan) Compressor Co., Ltd. stands as a celebrated authority in crafting and engineering elite screw air compressors and vacuum pumps, fortified by over a decade of industry expertise. Our distinguished product lineup encompasses normal and low-pressure screw air compressors, cutting-edge permanent magnet frequency conversion models, advanced twin-stage compression screw air compressors, tailored options for laser cutting, as well as versatile single-tank and double-tank mobile screw air compressors (available in both electric and diesel variants), alongside state-of-the-art screw vacuum pumps. Discover our unparalleled engineering prowess with a product suite meticulously designed to fulfill an array of industrial requirements.
Our production prowess is amplified by cutting-edge, lean multi-air compressor assembly lines that guarantee unmatched operational efficiency. Our dedicated team of over 50 specialists consistently optimizes our management frameworks, including ERP systems, to significantly reduce lead times and ensure the prompt delivery of top-tier products.
Our unwavering commitment to quality is exemplified by our ISO9001 certification. We steadfastly adhere to rigorous quality management protocols and deploy stringent quality control measures. Each machine is subject to comprehensive material, production, and pre-delivery inspections, ensuring the utmost quality standards are achieved.
We take immense pride in our outstanding customer service, beginning with expert pre-sales consultation to help clients choose the optimal air equipment tailored to their unique facilities, with extensive customization options in both appearance and configuration. We excel in providing OEM solutions to meet distinct dealer requirements. Our after-sales team, comprised of proficient sales and service experts, ensures swift and efficient responses to all customer inquiries and demands.
At Sanzhi (Henan) Compressor Co., Ltd., we remain steadfast in our pursuit of delivering reliable and superior products. We prioritize building lasting partnerships with our customers through efficient delivery, exceptional machines, and competitive pricing. Rely on us for extraordinary compressed air solutions that cater to your every requirement.
Situated in the heart of Xinzheng City, Henan Province, China, our factory is easily reachable. We offer complimentary pick-up services from Xinzheng International Airport, merely 30 kilometers away-an approximately one-hour journey to our premises. We cordially invite you to visit us and experience our operations firsthand!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a seasoned manufacturer of screw air compressors, proudly boasting over ten years of industry experience.
Q2. How do you control quality?
A: 1. Meticulous inspection of raw materials.
2. Strict control over installation procedures.
3. Each machine undergoes no less than 5 continuous hours of testing prior to dispatch, ensuring peak performance.
Q3. What information must I provide to get the suitable machine?
1. Desired air delivery capacity (Unit: CFM or m³/Min)
2. Preferred working pressure (Unit: PSI, Bar, or Mpa)
3. Voltage and frequency specifications pertinent to your country (V/Hz)
4. Any supplementary accessories required, such as air tanks, filters, or air dryers.
Share this information, and we will engineer the ideal solution tailored precisely for you!
Q4. What is the general unit conversion?
1 Bar = 0.1 Mpa = 14.5 PSI
1 m³/min = 35.32 cfm
1 KW = 1.34 HP
Q5. What is the available voltage air compressor?
A: Sanzhi provides a comprehensive spectrum of voltage options, including 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p, with customization available to align with your specific needs.
Q6. How long is the delivery time?
A: For our standard voltage models, enjoy the benefit of swift and efficient delivery within an impressive 15 working days from order confirmation. For tailored, non-standard models, please feel free to reach out to our dedicated and knowledgeable sales team who are eager to provide personalized assistance and insights.
Q7. What's the payment term?
A: Secure your order seamlessly with a 30% T/T deposit to initiate the process, followed by a 40% T/T payment just before shipment, ensuring smooth proceedings. The remaining balance of 30% T/T is due upon presentation of the B/L copy. We are pleased to accommodate payments in both USD and RMB for your utmost convenience and flexibility.
Q8. How about your warranty?
A: Experience unmatched peace of mind with our comprehensive warranty offerings: a full year for the entire machine, combined with an extended two-year warranty specifically designed for the screw air compressor, ensuring reliability and satisfaction, with the exception of consumable spare parts.
Q9. What about the maintenance?
A: The inaugural maintenance is required after 500 hours of operation to ensure optimal functioning, with subsequent regular maintenance scheduled every 2000-3000 hours thereafter. Always consider the actual working environment to fine-tune and optimize performance for best results.
Q10. Can machines be run in high-temperature environments?
A: Absolutely, our machines are meticulously engineered to deliver optimal performance even in high-temperature environments, featuring a robust working temperature range from -20° to 45° (-4ºF to 113ºF), ensuring resilience and efficiency.
Q11. Do you offer OEM service?
A: Indeed, we are proud to offer both OEM and ODM services, bolstered by our professional design team ready to collaborate with you. Bring your innovative ideas to life and make them a reality with our unmatched expertise and support.
Q12. How long could your air compressor be used?
A: Typically, our cutting-edge air compressors boast an impressive lifespan exceeding 10 years, ensuring long-term reliability, durability, and outstanding performance over the years.
Q13. Will you provide some spare parts for the machines?
A: Certainly, we provide a comprehensive selection of essential spare parts to ensure the seamless and uninterrupted operation of your machines, maintaining productivity and efficiency.
Q14. How about your after-sales service?
A: We offer comprehensive after-sales support to elevate your experience, including detailed online installation and commissioning instructions. Additionally, our experienced engineers are available for on-site training and installation assistance, ensuring your machines perform optimally and meet your expectations.
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