Unveil the ultimate in industrial performance with the 200KW 272HP Screw-Compressor from Sanzhi (Henan) Compressor Co., Ltd., a premier supplier from China. Our Permanent Magnet Variable Frequency Two-Stage Screw Air Compressor comes at unbeatable factory prices and is equipped with advanced German technology centrifugal fans. This powerhouse offers unparalleled energy savings and high efficiency, crafted in a stationary design that is ideal for a wide range of 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 showcases a sophisticated dual rotary screw system designed for optimal performance. Each stage includes an active and a passive screw, where the active screw powers the passive screw through an advanced external power transmission mechanism. In the first stage, a low-pressure screw group initiates compression, followed by a high-pressure screw group in the second stage. Sealing air films around each screw enhance the compression process, guiding it seamlessly through three phases: suction, pressurization, and exhaust.
First stage compression: The initial stage in the two-stage screw air compressor employs a low-pressure screw group. Here, gas enters the screw compression chamber via the suction valve and is rapidly compressed as the screw rotor spins at high speed. This compressed gas is then transferred to the second stage for further enhancement.
Second stage compression: In the second stage, the compressed gas enters a more confined screw space, where it is subjected to significantly higher pressures and temperatures. The exhaust valve then opens to expel the high-pressure gases from the system, completing the compression process with precision.
Natural air first enters through the air filter, where it mixes with a small amount of lubricating oil within the compression chamber. This mixture undergoes initial compression to interstage pressure levels and is significantly cooled through oil mist contact in the cooling channel. The cooled gas then advances to the second-stage rotor, experiencing secondary compression to achieve final exhaust pressure. The entire process culminates as the compressed gas is efficiently expelled through the exhaust valve, completing the air compression cycle with excellence.
| 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. |
The centrifugal fan, leveraging advanced German technology, employs a high-speed rotating impeller to dynamically accelerate and decelerate air. This innovative design facilitates axial air entry into the impeller, significantly enhancing motor cooling efficiency. Compared to conventional air-cooled fans, this mechanism allows for faster temperature reduction, ensuring continuous, uninterrupted compressor operation, and extending the compressor's service life.
1) High efficiency of PM motor:The permanent magnet (PM) motor boasts an extended constant torque range and a broader weak magnetic range. Its efficiency surpasses that of regular motors by 20-30%. Remarkably, the PM motor maintains its high efficiency even when operating away from the rated frequency, ensuring optimal performance under varying conditions.
2) Motor maintenance-free:The permanent magnet motor is designed without internal bearings, eliminating the costs associated with motor bearing maintenance and replacement, further reducing overall maintenance expenses.
3) Integrated frequency converter: Incorporating China's top-tier frequency system, our compressor features a wide speed regulation range and exceptional precision. The system adjusts to actual gas demand, delivering remarkable energy savings and optimizing operational efficiency.
4) No transmission loss: The compressor features a direct shaft connection structure with the embedded permanent magnet motor, ensuring a compact design. This eliminates the need for couplings and other transmission components, achieving 100% transmission efficiency.
5) Variable frequency start and soft startof the motor significantly reduce impact on power grid equipment, preventing damage to electrical systems and enhancing overall system longevity.
6) Reduced energy consumption: With a frequency conversion range spanning from 25% to 100% (compared to the standard 50% to 100%), our system offers over 30% energy savings compared to fixed-speed compressors. Additionally, it provides approximately 5% more energy savings than typical variable frequency compressors, with greater benefits for systems with fluctuating gas consumption.
7) Unique two-stage compression air end:Featuring a distinctive design, the two-stage compression screw machine integrates both the first and second-stage compression rotors within a single casing. Each rotor is individually gear-driven to achieve optimal linear speed, maximizing compression efficiency.
8) Internal spray curtain cooling method: Utilizing a high-efficiency internal spray curtain cooling technique, this method provides 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) Reduced internal leakage:The two-stage compression system lowers the compression ratio for each stage, minimizing internal leakage between high and low-pressure ends, and improving volumetric efficiency.
10) Noise reduction:The reduced compression ratio in the two-stage system also significantly diminishes noise levels, particularly during unloading operations, ensuring a quieter working environment.
11) Easy maintenance and service:Despite the 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. Unbeatable Competitive Pricing Advantage
We provide customers with direct ex-factory prices, ensuring they stay exceptionally competitive in their respective markets.
2. Seamless Direct Transactions
All our products are supplied directly from the factory, enabling us to offer you more efficient and cost-effective solutions.
3. Comprehensive OEM & ODM Services Tailored to You
Our robust production and management capabilities empower us to deliver exceptional OEM/ODM services precisely tailored to meet your unique needs.
4. Personalized Customization Services
We cater to non-standard, export orders, and offer customizations in voltage, power, pressure, etc. Contact us with your specific requirements and let us exceed your expectations.
5. Flexible Small Order Acceptance
Place a small trial order to assess the superior quality and performance of our products firsthand.
6. Swift and Efficient Delivery
Experience the timely delivery of our high-quality products, ensuring your operations run smoothly without delay.
7. Full Authorization for Distributors
For our distributors, we provide comprehensive authorization certificates, empowering you to confidently market and sell our SANZHI brand products.
Sanzhi (Henan) Compressor Co., Ltd is a leading name in the industry, specializing in the manufacture of screw air compressors and screw vacuum pumps with over a decade of expertise. Our extensive product lineup includes advanced screw air compressors and vacuum pumps, covering 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, and both electric and diesel mobile screw air compressors. Additionally, we offer sophisticated screw vacuum pumps, all tailored to meet diverse industrial needs.
Our production process is supported by state-of-the-art assembly lines that ensure maximum efficiency. With a dedicated team of over 50 employees, we continually refine our management systems, including ERP, to reduce lead times and guarantee the rapid delivery of high-quality products.
Our management practices are top-notch, with our factory achieving ISO9001 quality management system certification. We adhere to strict quality standards by implementing comprehensive quality control processes. Each machine undergoes thorough inspections, including material checks, production assessments, and pre-delivery evaluations, ensuring that only the highest quality products reach our customers.
In customer service, we pride ourselves on exceptional pre-sales consultation, providing expert guidance to help customers choose the perfect air equipment for their specific needs. Our high degree of customization extends to both appearance and configuration, and we offer OEM services to meet individual dealer requirements. Our professional sales and service team ensures prompt and efficient after-sales support, making sure every customer is satisfied.
At Sanzhi (Henan) Compressor Co., Ltd, we are devoted to delivering superior, stable products and fostering long-term customer relationships. With efficient delivery, top-tier machines, and competitive pricing, we are your trusted partner for all your compressed air solution needs.
Situated in Xinzheng City, Henan Province, China, our factory is conveniently located just 30 kilometers from Xinzheng International Airport, approximately an hour's drive. We offer complimentary pick-up services from the airport and warmly welcome your visit to our company!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are an experienced manufacturer specializing in screw air compressors, with over 10 years of expertise.
Q2. How do you control quality?
A: 1. We perform rigorous inspections on all raw materials.
2. Installation procedures are meticulously controlled.
3. Each machine undergoes a minimum of 5 hours of continuous testing before it leaves 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 customized 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 come 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 efficiency within a swift 15 working days after confirmation. For non-standard specifications, kindly reach out to our dedicated sales team to receive detailed timelines and personalized assistance.
Q7. What's the payment term?
A: We require an initial 30% T/T upfront, followed by another 40% T/T before shipment, and the remaining 30% T/T upon receipt of the B/L copy. Payments can be seamlessly made in both USD and RMB.
Q8. How about your warranty?
A: We offer an all-encompassing one-year warranty for the entire machine, along with an extended two-year warranty specifically for the screw air compressor. Please note that this excludes consumable spare parts.
Q9. What about the maintenance?
A: The initial maintenance is recommended after 500 hours of operation. Subsequent maintenance should be carried out every 2000-3000 hours, adjusted according to the actual working environment for optimal performance.
Q10. Can machines be run in high-temperature environment?
A: Absolutely, our machines are meticulously engineered to operate efficiently in high-temperature environments. They feature a robust working temperature range from -20°C to 45°C (-4°F to 113°F).
Q11. Do you offer OEM service?
A: Yes, we proudly provide both OEM and ODM services, facilitated by our expert design team. We warmly welcome your custom orders to meet your unique requirements.
Q12. How long could your air compressor be used?
A: Typically, our air compressors are built to last, boasting a lifespan exceeding 10 years, ensuring durability and long-term reliability.
Q13. Will you provide some spare parts for the machines?
A: Certainly, we will provide the necessary spare parts for your machines, ensuring seamless operation and maintenance.
Q14. How about your after-sales service?
A: We offer comprehensive after-sales support, including detailed online instructions for installation and commissioning. Additionally, our skilled engineers are available for training and installation assistance to ensure your complete satisfaction.
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