Internal Structure Frontside: Unveil the artfully crafted frontside of our compressor's internal architecture, where each component is meticulously designed to ensure peak performance and remarkable durability. The seamless integration of these elements stands testament to our commitment to engineering excellence.
Internal Structure Backside: Delve into the sophisticated backside of the internal framework, a marvel of meticulous engineering. Designed to deliver exceptional support to the core functionalities, this structure enhances overall operational stability and ensures unparalleled reliability.
Working Principle: Discover the groundbreaking working principle of the Sanzhi Compressor, where cutting-edge technology meets the science of air compression. This synergy delivers unrivaled efficiency and power, revolutionizing the way air compression is achieved.
In an ideal air compression process, the theoretical power required for single-stage pressure transmission equals the cumulative power necessary for multi-stage compression. However, in practical scenarios, the actual working power escalates due to factors such as coupling transmission losses, bearing friction, and the cooling effects of liquid viscosity. By strategically minimizing the compression ratio at each stage, unnecessary power consumption can be significantly curtailed, allowing multi-stage compression to demand less total power compared to its single-stage counterpart.
The two-stage screw air compressor exemplifies engineering excellence with its advanced dual-stage rotary screw design. Each stage features an active and passive screw, powered by an external source. The first stage uses a low-pressure rate screw group, while the second stage employs a high-pressure rate group. A sealing air film wraps around each screw, compressing gas through a seamless cycle of suction, pressurization, and exhaust, delivering extraordinary efficiency.
First Stage Compression: During this initial phase, the two-stage screw air compressor uses a low-pressure rate screw group to compress gas. The gas enters the screw compression chamber via the suction valve, where the high-speed whirl of the screw rotor progressively expels and transports it to the next compression phase.
Second Stage Compression: In this advanced phase, the gas is directed into a constricted screw space within the second-stage screw group, where it is compressed under heightened temperature and pressure. The exhaust valve then opens, efficiently extracting the high-pressure gas, thus completing the compression sequence with precision.
Natural air initially enters the compression system through an air filter and mixes with a minimal amount of lubricating oil inside the compression chamber. This blend undergoes initial compression to an interstage pressure level, then traverses a cooling channel, where abundant oil mist significantly lowers its temperature. The cooled, compressed gas then moves to the second-stage rotor for further compression, achieving final exhaust pressure. The cycle culminates in a fully optimized compression process as the air is released through the exhaust valve.
1) High Efficiency of PM Motor: Unveil the extraordinary benefits of our state-of-the-art permanent magnet motor, which proudly offers a phenomenal 20-30% boost in efficiency over conventional motors. Crafted with an avant-garde design, it guarantees unwavering and optimal performance throughout all operating frequencies, ensuring peak efficiency is maintained consistently.
2) Motor Maintenance-Free: Our groundbreaking permanent magnet motor boasts an ingenious design that completely does away with internal bearings, thus eliminating the need for any bearing maintenance or replacement. This innovation not only slashes costs but also streamlines maintenance, providing unmatched convenience and dependability.
3) Integrated Frequency Converter: Featuring China's top-tier frequency system, this air compressor offers precise and adaptable speed control, meticulously aligning energy consumption with your precise air demands, thereby elevating operational efficiency to new heights.
4) No Transmission Loss: The direct integrated shaft design that connects the motor to the compressor ensures a compact and highly efficient architecture, achieving an impeccable 100% transmission efficiency. This innovative design obviates the necessity for couplings or additional transmission elements.
5) Variable Frequency Start and Soft Start Revel in the advantages of variable frequency start and soft start features, which dramatically diminish the stress on power grid systems, thus protecting your electrical infrastructure from potential harm.
6) Reduce Energy Consumption: With a dynamic frequency conversion capability ranging from 25% to 100%, this system delivers over 30% energy savings compared to fixed-speed compressors. It excels beyond standard variable frequency compressors by approximately 5% in energy efficiency, especially in environments with variable gas demand.
7) Two-Stage Compression Unique Air End: Our elegant two-stage compression design masterfully integrates the first and second-stage compression rotors within a singular housing. Each rotor is driven by its own gear, maximizing linear speeds and significantly enhancing the efficiency of the compression process.
8) Internal Spray Curtain Cooling Method: Employing an advanced internal spray curtain cooling technique, this method adeptly reduces compressed air temperatures, closely approximating isothermal compression. It minimizes pressure loss between stages, thereby boosting overall compression efficiency.
9) Reduce Internal Leakage: Through the adoption of two-stage compression, the compression ratio per stage is effectively lowered, thereby minimizing internal leakage from high to low pressure, which in turn markedly improves volumetric efficiency.
10) Noise Reduction: The two-stage compression process substantially decreases the compression ratio, leading to a significant reduction in noise levels, particularly during unloading, thus creating a quieter and more agreeable work environment.
11) Easy Maintenance and Service: Preserving the simplicity of single-stage systems, this two-stage compressor unit, aside from the screw air end, ensures straightforward maintenance and usability, delivering unparalleled convenience and efficiency for end-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. Price Advantage: Experience an extraordinary opportunity to outshine others with our unbeatable pricing strategy, designed to give you a compelling advantage over your competition.
By directly offering our valued customers ex-factory prices, we empower you to become a frontrunner in your industry, achieving substantial cost savings and superior market positioning.
2. Direct Deal: Enhance your operational efficiency and maximize cost-effectiveness by purchasing directly from our factory with absolute ease and assurance.
With direct shipments from our factory, you are assured of receiving the most cost-effective and efficient solutions tailored specifically for your needs.
3. OEM & ODM Services: Elevate your brand with bespoke solutions meticulously crafted to fulfill your unique and distinct requirements.
Our cutting-edge production capabilities and meticulous management practices ensure the provision of exceptional OEM/ODM services, tailored precisely to your specifications.
4. Customised Service: Design and develop your solutions with unmatched precision to seamlessly align with your exact specifications and aspirations.
We cater to non-standard, export, and custom orders for voltage, power, and pressure. Share your specific requirements, and watch us transform them into a distinctive reality.
5. Accept Small Orders: Embrace the flexibility of placing small orders to experience the unparalleled excellence of our products firsthand.
Begin with a trial order to discover the superior quality and exceptional performance of our remarkable offerings firsthand.
6. Fast Delivery: Rest assured with our prompt and reliable delivery services, bringing top-tier products swiftly and efficiently to your doorstep.
Receive premium products with our guaranteed timely and proficient delivery services, ensuring your complete satisfaction and peace of mind.
7. Complete Authorization: Equip yourself with comprehensive rights to promote our prestigious SANZHI brand with full confidence and authority.
We provide comprehensive authorization certificates to distributors, empowering you to market our esteemed SANZHI brand products with absolute assurance and pride.
Sanzhi (Henan) Compressor Co., Ltd shines as a beacon of innovation and leadership in the manufacturing realm, specializing in cutting-edge screw air compressors and robust screw vacuum pumps. With over a decade of unparalleled expertise, Sanzhi offers a comprehensive array of industrial solutions that are both diverse and dynamic. Our product portfolio is resplendent with standard and low-pressure screw air compressors, revolutionary permanent magnet frequency conversion screw air compressors, and advanced two-stage compression screw air compressors. We cater to specialized applications such as laser cutting with our screw air compressors and offer versatile mobility with single and double-tank mobile screw air compressors in both electric and diesel variations. Our screw vacuum pumps are crafted with meticulous precision to meet your industrial specifications with unwavering reliability.
In our production domain, we wield cutting-edge multi-air compressor assembly lines that redefine efficiency and modernity. With a dedicated team of over 50 skilled professionals, we continually refine management systems like ERP to dramatically reduce lead times, ensuring the rapid delivery of superior quality products. Our relentless pursuit of excellence empowers us to adeptly address the diverse demands of our clients with speed and proficiency.
Our management framework is fortified by the prestigious ISO9001 quality management system certification, underscoring our unwavering commitment to stringent quality control standards. We implement rigorous procedures that ensure each machine undergoes comprehensive material inspection, thorough production inspection, and meticulous pre-delivery inspection. This unwavering dedication guarantees that every product we deliver is a testament to our commitment to quality and dependability.
In the realm of customer service, we excel in pre-sales by providing expert guidance to help customers select air equipment meticulously tailored to their facility needs. Our offerings feature high levels of customization, from aesthetic design to functional configuration, and include OEM solutions for crafting unique products that meet dealers' specific requirements. Our after-sales support is robust and responsive, with a professional sales and service team poised to swiftly address customer inquiries, ensuring an exceptional service experience.
At Sanzhi (Henan) Compressor Co., Ltd, our unwavering mission is to deliver superior and stable products while nurturing enduring relationships with our esteemed clients. We are committed to providing not only efficient services and competitively priced, high-quality machinery but also a reliable and satisfying compressed air solution that is precisely tailored to meet your unique needs.
Our avant-garde factory is strategically located in Xinzheng City, Henan Province, China, offering convenient access from Xinzheng International Airport, just 30 kilometers away, an approximate hour's drive. We warmly invite you to visit our company and experience our unwavering commitment to excellence firsthand.
Q1. Are you a trading company or manufacturer?
A: We are a professional manufacturer of screw air compressors, with more than 10 years of experience.
Q2. How do you control quality?
A: 1. The raw materials are strictly inspected.
2. Installation procedures are strictly controlled.
3. Each machine must pass at least 5 hours of continuous testing before leaving the factory.
Q3. What information must I provide to get the suitable machine?
1. How much air delivery capacity (Unit: CFM or m³/Min)
2. How much working pressure (Unit: PSI, Bar or Mpa)
3. What is the voltage and frequency of my country of residence (V/Hz)
4. Whether I need other accessories such as an air tank, filters, and/or air dryers.
Tell us the answer, we will offer a scheme 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 available voltage include 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, 440v/60hz/3p, and can be customized according to your requirements.
Q6. How long is the delivery time?
A: For standard voltage,15 working days after the confirmed order. Non-standard, please contact our sales.
Q7. What's the payment term?
A: 30% T/T in advance, 40% T/T before shipment, and 30% T/T against the B/L copy. USD, RMB can be accepted.
Q8. How about your warranty?
A: One year for the whole machine and two years for screw air compressor, except for consumable spare parts.
Q9. What about the maintenance?
A: First maintenance needs to be done after 500 hours, and then every 2000-3000 hours to do the normal maintenance, and consider the actual environment.
Q10. Can machines be run in high-temperature environment?
A: Yes, machines would run in high-temperature environment countries. Working temperature from -20° to 45°(-4ºF-113ºF).
Q11. Do you offer OEM service?
A: Yes, with a professional design team, both OEM & ODM orders are highly welcome.
Q12. How long could your air compressor be used?
A: Generally, more than 10 years.
Q13. Will you provide some spare parts for the machines?
A: Yes, of course.
Q14. How about your after-sales service?
A: Provide customers with installation and commissioning online instructions, and arrange for our engineers to help you with training and installation.
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