Discover the unparalleled power of the Reliable Sanzhi 200kw Screw Air Compressor from a premier Chinese manufacturer. Our Permanent Magnet Variable Frequency Two-Stage Screw Air Compressor is available at factory prices and is expertly engineered with cutting-edge Centrifugal Fans. This industrial marvel offers unmatched energy savings and superior high efficiency in a robust stationary design, making it the perfect solution for all industrial applications.
Internal Structure Frontside
Internal Structure Backside
Working Principle
In an ideal air compression process, the power needed for single-stage pressure transmission equals the collective power required for multi-stage compression. However, real-world scenarios entail higher power demands due to transmission power loss, bearing friction, and liquid viscosity cooling effects. By minimizing the compression ratio at each stage, the total power required for multi-stage compression can be significantly lower than that of single-stage compression, enhancing efficiency and reducing unnecessary power usage.
The two-stage screw air compressor features a sophisticated dual rotary screw system. Each stage includes an active and a passive screw, with the active screw driving the passive screw through an external power transmission mechanism. The first stage employs a finely tuned low-pressure screw assembly, while the second stage utilizes a high-pressure screw assembly. Sealing air films around each screw facilitate the compression process through three distinct phases: suction, pressurization, and exhaust.
First stage compression: In the initial stage of the two-stage screw air compressor, a low-pressure screw assembly is utilized. Gas enters the screw compression chamber via the suction valve and is compressed as the screw rotor spins at high speed. This compressed gas is then transferred to the second stage for further compaction.
Second stage compression: During the second stage, gas enters a more confined screw space, where it is subjected to increased pressures and temperatures. The exhaust valve opens to release the high-pressure gases from the system, completing the compression process.
Natural air is first drawn through the air filter and mixed with a small amount of lubricating oil in the compression chamber. This mixture is initially compressed to interstage pressure and then substantially cooled via contact with oil mist in the cooling channel. The cooled gas then enters the second-stage rotor, undergoing a secondary compression to achieve the final exhaust pressure. The entire process culminates as the compressed gas is expelled through the exhaust valve, completing the air compression cycle.
| 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. |
Leveraging cutting-edge German engineering, the centrifugal fan employs a high-speed rotating impeller to dynamically accelerate and regulate air flow. This sophisticated design not only facilitates axial air entry into the impeller but also significantly enhances motor cooling efficiency. Compared to conventional air-cooled fans, this mechanism accelerates temperature reduction, guaranteeing continuous, uninterrupted compressor operation and extending the compressor's service life.
1) Superior Efficiency of PM Motor:The permanent magnet (PM) motor offers an extended constant torque range and a broader weak magnetic range. Its efficiency outperforms regular motors by 20-30%, maintaining high efficiency even when operating away from the rated frequency. This ensures optimal performance under varying conditions.
2) Maintenance-Free Motor:Our advanced permanent magnet motor is designed without internal bearings, eliminating costs associated with motor bearing maintenance and replacement, significantly reducing overall maintenance expenses.
3) Integrated Frequency Converter: Featuring China's top-tier frequency system, our compressor boasts a wide speed regulation range and exceptional precision. The system adjusts to real-time gas demand, delivering substantial energy savings and optimizing operational efficiency.
4) Zero Transmission Loss: The compressor's direct shaft connection structure with the embedded permanent magnet motor ensures a compact design. This configuration eliminates the need for couplings and other transmission components, achieving 100% transmission efficiency.
5) Variable Frequency Start and Soft StartThe motor's variable frequency start and soft start capabilities significantly reduce impact on power grid equipment, preventing electrical system damage and enhancing overall system longevity.
6) Enhanced Energy Efficiency: Our system, with a frequency conversion range from 25% to 100% (compared to the standard 50% to 100%), offers over 30% energy savings compared to fixed-speed compressors. Additionally, it provides approximately 5% more energy savings than typical variable frequency compressors, particularly benefiting systems with fluctuating gas consumption.
7) Unique Two-Stage Compression Air End:Our innovative two-stage compression screw machine integrates the first and second-stage compression rotors within a single casing. Each rotor is individually gear-driven to achieve optimal linear speed, thus maximizing compression efficiency.
8) Internal Spray Curtain Cooling Method: Utilizing a high-efficiency internal spray curtain cooling technique, this method delivers superior cooling effects, significantly lowering compressed air temperatures. This achieves near-isothermal compression, reduces pressure loss between stages, lowers the compression ratio, and enhances overall compression efficiency.
9) Minimized Internal Leakage:The two-stage compression system reduces the compression ratio for each stage, minimizing internal leakage between high and low-pressure ends, thereby improving volumetric efficiency.
10) Noise Reduction:The reduced compression ratio in the two-stage system significantly diminishes noise levels, especially during unloading operations, ensuring a quieter working environment.
11) Easy Maintenance and Service:Despite its advanced two-stage compression design, the system's other components and structures remain fundamentally similar to those of single-stage compressors, ensuring ease of maintenance and user convenience.
1. Unmatched Competitive Pricing
We empower our clients with unbeatable ex-factory prices, ensuring your position at the forefront of the market.
2. Seamless Direct Transactions
Our factory-direct supply chain allows us to present more economical and efficient solutions to our customers.
3. Extensive OEM & ODM Services
Leveraging our advanced production and management prowess, we provide top-tier OEM/ODM services precisely tailored to your specifications.
4. Tailored Customization Services
We cater to unique, non-standard, export demands and customize voltage, power, pressure, and more. Share your specific requirements with us.
5. Acceptance of Small Orders
Initiate with a small trial order to experience the outstanding quality of our offerings firsthand.
6. Swift and Reliable Delivery
Benefit from our prompt and reliable delivery of superior-grade products.
7. Comprehensive Authorization
We equip our distributors with full authorization certificates, ensuring you can confidently market and sell our SANZHI brand products.
Sanzhi (Henan) Compressor Co., Ltd is a premier manufacturer excelling in the production of screw air compressors and screw vacuum pumps, boasting over a decade of industry experience. Our diverse product portfolio features state-of-the-art screw air compressors and vacuum pumps including normal pressure/low-pressure screw air compressors, permanent magnet frequency conversion models, two-stage compression units, screw air compressors for laser cutting, single-tank and double-tank mobile screw air compressors, electric and diesel mobile screw air compressors, and advanced screw vacuum pumps.
In production, our cutting-edge assembly lines facilitate the most efficient manufacturing processes. Thanks to our dedicated team of over 50 employees, we continuously optimize management systems such as ERP to minimize lead times and ensure the swift delivery of high-quality products.
In management, our factory proudly holds ISO9001 quality management system certification. We adhere to stringent quality standards, implementing rigorous quality control processes. Every machine undergoes comprehensive inspections, including material checks, production assessments, and pre-delivery evaluations, ensuring only the finest products leave our facility.
In customer service, we excel in pre-sales consultation, offering professional guidance to help customers select the ideal air equipment tailored to their specific needs. Our high level of customization extends to both appearance and configuration, and we provide OEM services to meet unique dealer demands. For after-sales support, our professional sales and service team ensures prompt and efficient customer responses.
At Sanzhi (Henan) Compressor Co., Ltd, we are committed to delivering superior, stable products and fostering long-term customer relationships. With efficient delivery, top-quality machines, and competitive pricing, we are your reliable partner for comprehensive compressed air solutions.
Our factory is conveniently located in Xinzheng City, Henan Province, China. We offer complimentary pick-up services from Xinzheng International Airport, located just 30 kilometers away-about an hour's drive. We warmly welcome your visit to our company!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a seasoned manufacturer specializing in screw air compressors, backed by over 10 years of expertise.
Q2. How do you control quality?
A: 1. We rigorously inspect all raw materials.
2. Installation procedures are meticulously controlled.
3. Each machine undergoes a minimum of 5 hours of continuous testing before leaving our factory to ensure optimal performance.
Q3. What information must I provide to get the suitable machine?
1. Required air delivery capacity (Unit: CFM or m³/Min)
2. Desired working pressure (Unit: PSI, Bar, or Mpa)
3. Voltage and frequency specifications for your country (V/Hz)
4. Additional accessories needed (e.g., air tanks, filters, air dryers).
Provide these details, and we will design a tailored 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 air compressors are available in various voltages including 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, 440v/60hz/3p, and can be customized to meet your specific requirements.
Q6. How long is the delivery time?
A: For standard voltage orders, your request will be processed with remarkable speed, completing within a swift 15 working days after confirmation. For non-standard specifications, please connect with our dedicated sales team to get detailed timelines tailored to your needs.
Q7. What's the payment term?
A: Our payment terms are structured as follows: 30% T/T upfront, another 40% T/T before shipment, and the final 30% T/T upon receipt of the B/L copy. Payments are accepted in both USD and RMB for your convenience.
Q8. How about your warranty?
A: We provide a comprehensive one-year warranty covering the entire machine, along with an extended two-year warranty specifically for the screw air compressor. Please note, consumable spare parts are excluded from the warranty.
Q9. What about the maintenance?
A: Initial maintenance is required after the first 500 hours of operation. Subsequent maintenance should be conducted every 2000-3000 hours, with adjustments made based on the actual working environment.
Q10. Can machines be run in high-temperature environment?
A: Absolutely! Our machines are engineered to perform efficiently even in high-temperature environments, with a working temperature range from -20°C to 45°C (-4°F to 113°F).
Q11. Do you offer OEM service?
A: Yes, we proudly offer comprehensive OEM and ODM services, facilitated by our expert design team. Custom orders are highly welcome, as we strive to meet your specific requirements.
Q12. How long could your air compressor be used?
A: Typically, our air compressors boast a lifespan exceeding 10 years, ensuring long-term reliability and performance.
Q13. Will you provide some spare parts for the machines?
A: Certainly, we provide essential spare parts for your machines, ensuring they remain in optimal working condition.
Q14. How about your after-sales service?
A: We offer extensive after-sales support, including comprehensive online instructions for installation and commissioning. Additionally, our skilled engineers are available for training and installation assistance to ensure you get the best out of our products.
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