Introducing the groundbreaking Low-Pressure Twin-Stage Compression Permanent Magnet Variable Frequency Electric Drive Screw Compressor from Sanzhi (Henan) Compressor Co., Ltd.! This state-of-the-art Twin-Screw Air Compressor is meticulously engineered to meet the rigorous demands of industrial applications, setting an unparalleled standard for both value and performance. Its innovative design and superior craftsmanship ensure outstanding functionality and energy efficiency. Available in a versatile array of power options, including 37KW, 45KW, 55KW, 75KW, 90KW, 110KW, 132KW, 160KW, 185KW, 200KW, and 250KW, this energy-efficient marvel promises not just exceptional efficiency but also unwavering reliability that stands the test of time. Choose our market-leading compressor to experience unmatched quality at an incredibly competitive price, and elevate your industrial operations to new heights.
Meticulously Crafted Internal Structure - Frontside
Intricately Designed Internal Structure - Backside
Advanced Working Principle
In the realm of air compression, the pursuit of excellence aims for the energy requirements of single-stage transmission to align seamlessly with the collective power of multi-stage compression. Yet, real-world challenges like coupling power losses, bearing friction, and the cooling influence of liquid viscosity often lead to inefficiencies. By thoughtfully decreasing the compression ratio at each stage, these inefficiencies are significantly minimized. This approach results in a more efficient system with a reduced total power demand, making multi-stage compression far more efficient than its single-stage counterpart.
Introducing our cutting-edge two-stage screw air compressor, featuring a pioneering dual-stage rotary screw mechanism. Each stage comprises an active screw, driven by an external source, and a passive screw that follows suit. The first stage is equipped with a low-pressure screw ensemble, while the second stage is fitted with a high-pressure screw setup. A protective air film seals each screw, ensuring peak performance during compression. As the screws rotate, they expertly manage the gas through three crucial phases: suction, pressurization, and discharge, achieving unparalleled efficiency.
First Stage Compression: The process begins with the low-pressure screw group compressing the gas. The gas is drawn into the screw compression chamber via the suction valve, where high-speed screw rotors gradually compress it. This stage propels the gas towards the secondary compression phase with heightened efficiency, setting the stage for optimal performance.
Second Stage Compression: During this pivotal phase, the gas undergoes compression in a more restricted screw space, leading to increased temperatures and pressures. This phase culminates with the opening of the exhaust valve, facilitating the efficient expulsion of high-pressure gas from the system. The process ensures that each element is functioning at its peak, delivering impressive results.
Beginning with natural air purified through an air filter, the first compression stage sees it mix with a minimal amount of lubricating oil in the compression chamber, where it is compressed to an intermediate pressure. As this compressed gas traverses the cooling channel, it encounters substantial oil mist, drastically reducing its temperature. The resulting cooled gas then undergoes additional compression within the second stage rotor, achieving the final exhaust pressure before being expelled through the exhaust valve, thus completing a remarkably efficient compression cycle.
1) Superior Efficiency of PM Motor:Our cutting-edge permanent magnet motor is a marvel of engineering, expertly crafted to provide unparalleled performance. It achieves a staggering 20-30% higher efficiency than standard motors, thanks to its broad constant torque and weak magnetic range. This ensures exceptional efficiency over various frequencies, guaranteeing relentless, top-notch performance.
2) Maintenance-Free Motor Design:Crafted with innovative foresight, our permanent magnet motor is free from the burden of internal bearings, thus eradicating the need for costly and time-consuming bearing maintenance and replacements. Experience seamless convenience with our maintenance-free motor design.
3) Advanced Integrated Frequency Converter: Our compressor boasts China's leading frequency system, delivering precise and broad speed regulation. It seamlessly adjusts to actual gas demands, optimizing energy conservation while ensuring maximal efficiency.
4) Elimination of Transmission Loss: Thanks to our pioneering integrated shaft design, the permanent magnet motor directly links to the compressor. This ingenious, compact structure, devoid of couplings and other transmission components, guarantees 100% transmission efficiency.
5) Variable Frequency and Soft Start Capabilities:Our sophisticated variable frequency and soft start features greatly diminish the impact on power grid equipment, safeguarding electrical components from potential harm and bolstering system longevity.
6) Enhanced Energy Efficiency: With a frequency conversion range spanning from 25% to 100% (compared to the usual 50% to 100%), our system achieves over 30% energy savings versus fixed-speed compressors. It surpasses standard variable frequency compressors by approximately 5%, offering even more savings under varying gas consumption scenarios.
7) Unique Two-Stage Compression Air End:Our trailblazing two-stage compression screw machine ingeniously incorporates both first and second-stage rotors within a single casing. Each rotor, driven directly by gears, attains optimal linear speed, markedly enhancing compression efficiency.
8) Innovative Internal Spray Curtain Cooling:Our high-efficiency internal spray curtain cooling method dramatically slashes compressed air temperatures via near-isothermal compression, minimizing pressure loss and elevating overall efficiency.
9) Minimized Internal Leakage:Through a two-stage compression process, we notably decrease the compression ratio for each stage, significantly curtailing internal leakage from high to low-pressure ends. This enhancement leads to superior volume efficiency.
10) Significant Noise Reduction:Our two-stage compression process effectively diminishes the compression ratio, substantially reducing operational noise, particularly during unloading phases, creating a more serene working environment.
11) Effortless Maintenance and Service:The two-stage compressor unit shares comparable systems and structures with single-stage units, except for the screw air end, simplifying maintenance and ensuring 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. Absolutely Unmatched Price Advantage
By skillfully bypassing the middleman, Sanzhi offers industry-leading ex-factory prices. This strategic maneuver ensures you, our esteemed customer, a formidable market advantage with our competitively priced and premium-grade compressors.
2. Seamless Direct Transactions
Discover the unmatched reliability of factory-direct transactions, promising superior quality and cost-efficiency to satisfy all your air compression requirements.
3. Customized OEM & ODM Services
Tap into our factory's outstanding production and management capabilities to access customized OEM/ODM services that precisely align with your unique business needs.
4. Tailored Customization Services
We welcome bespoke orders for non-standard and export specifications, accommodating diverse needs in voltage, power, and pressure. Connect with us to satisfy your exacting demands.
5. Acceptance of Small Orders
Evaluate the exceptional performance of our products through a small trial order, ensuring they not only meet but exceed your highest quality standards.
6. Expedited Delivery
Receive world-class products backed by our commitment to prompt and reliable delivery, ensuring your operations remain seamlessly efficient.
7. Broad Authorization
Enhance your sales strategy with our comprehensive authorization certificates, granting you the assurance and confidence to effectively market and sell SANZHI brand products.
Sanzhi (Henan) Compressor Co., Ltd. stands as an eminent figure in the realm of premium screw air compressors and vacuum pumps, showcasing over ten years of unparalleled expertise. Our comprehensive suite of products caters to a wide array of industrial applications and includes standard and low-pressure screw air compressors, permanent magnet frequency conversion models, twin-stage compression screw air compressors, specialized units for laser cutting, as well as versatile single-tank and double-tank mobile screw air compressors available in both electric and diesel versions. Additionally, our screw vacuum pumps are crafted to perfection, promising outstanding performance. Discover our superior engineering, tailored to fulfill diverse industrial demands.
Our production prowess is fortified by cutting-edge, lean multi-air compressor assembly lines that guarantee unmatched efficiency. Our team, comprising more than 50 seasoned professionals, relentlessly enhances our sophisticated management systems, including ERP, to not only minimize lead times but also to ensure the swift delivery of products that stand out in quality and reliability.
Our unwavering dedication to quality is evidenced by our esteemed ISO9001 certification. Adhering to the most stringent quality management practices, we implement rigorous quality control measures across the board. Every machine we manufacture is subjected to meticulous inspections-covering materials, production processes, and pre-delivery checks-to uphold the pinnacle of quality standards.
Our pride in providing exceptional customer service is reflected in our expert pre-sales guidance. We assist clients in selecting the ideal air equipment perfectly tailored to their facilities, offering extensive customization options in both appearance and configuration. Specializing in OEM solutions, we cater to unique dealer requirements with precision. Our dedicated after-sales team, consisting of proficient sales and service professionals, ensures prompt and efficient responses to all customer inquiries and needs, cementing trust and satisfaction.
At Sanzhi (Henan) Compressor Co., Ltd., our steadfast commitment to delivering reliable, high-quality products remains our keystone. We prioritize building lasting relationships with our customers through our rapid delivery, superior machines, and competitive pricing. Rely on us for extraordinary compressed air solutions that surpass your expectations and fulfill every need with excellence.
Situated in the vibrant Xinzheng City, Henan Province, China, our factory boasts convenient accessibility. We offer complimentary pick-up services from Xinzheng International Airport, which is a mere 30 kilometers away-approximately a one-hour journey to our facility. We warmly invite you to visit and experience our operations firsthand, witnessing the dedication and precision that define our production.
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a seasoned manufacturer specializing in screw air compressors, with an impressive legacy spanning over a decade in the industry.
Q2. How do you control quality?
A: 1. Rigorous inspection of raw materials ensures only the finest inputs are used.
2. Installation procedures are managed with stringent precision to guarantee excellence.
3. Each machine is subjected to a minimum of 5 hours of relentless testing to secure optimal performance and reliability before dispatch.
Q3. What information must I provide to get the suitable machine?
1. Required air delivery capacity (Unit: CFM or m³/Min) to match your operational needs.
2. Desired working pressure (Unit: PSI, Bar, or Mpa) to ensure compatibility with your applications.
3. Voltage and frequency specifications of your country (V/Hz) to guarantee seamless integration.
4. Any additional accessories required, such as air tanks, filters, or air dryers, to complete your setup.
Provide us with this information, and we will tailor the perfect solution engineered specifically for you!
Q4. What is the general unit conversion?
1 Bar = 0.1 Mpa = 14.5 PSI, ensuring precise conversions for your applications.
1 m³/min = 35.32 cfm, facilitating accurate calculations for your needs.
1 KW = 1.34 HP, allowing for effortless power conversions.
Q5. What is the available voltage air compressor?
A: Sanzhi provides an extensive array of voltage options, including 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p. Customization is available to precisely meet your specific requirements, ensuring compatibility and performance.
Q6. How long is the delivery time?
A: For our standard voltage models, benefit from swift delivery just within 15 working days post order confirmation. For tailored, non-standard models, our dedicated and insightful sales team is ready to offer you personalized guidance and assistance. Get in touch for a customized experience!
Q7. What's the payment term?
A: Secure your purchase with a 30% T/T deposit, complemented by a 40% T/T payment pre-shipment. The final 30% T/T is conveniently payable upon B/L copy presentation. We accommodate payments in both USD and RMB to enhance your convenience.
Q8. How about your warranty?
A: Indulge in unrivaled assurance with our comprehensive warranty: a full year coverage for the entire machine plus an extended two-year warranty for the screw air compressor, excluding consumable spare parts for ongoing peace of mind.
Q9. What about the maintenance?
A: Your first maintenance session is due after 500 operational hours, followed by routine maintenance every 2000-3000 hours. Adapt to your specific working environment to ensure peak performance and longevity.
Q10. Can machines be run in high-temperature environments?
A: Absolutely! Our machines are rigorously engineered to excel in high-temperature environments, withstanding an impressive temperature range from -20° to 45° (-4ºF to 113ºF) ensuring reliable performance.
Q11. Do you offer OEM service?
A: Indeed, we proudly provide both OEM and ODM services, backed by our expert design team. Transform your innovative ideas into reality with our specialized expertise.
Q12. How long could your air compressor be used?
A: Generally, our air compressors are designed to deliver long-lasting performance, boasting a remarkable lifespan exceeding 10 years, ensuring enduring reliability.
Q13. Will you provide some spare parts for the machines?
A: Certainly, we supply essential spare parts to ensure your machines operate seamlessly and without interruption, safeguarding continuous productivity.
Q14. How about your after-sales service?
A: We deliver exceptional after-sales support, offering detailed online installation and commissioning instructions. Furthermore, our engineers are ready to provide on-site training and installation assistance, ensuring optimal machine performance and satisfaction.
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