Unveil the pinnacle of industrial efficiency with the robust 185kw Two-Stage Screw Air Compressor from Sanzhi (Henan) Compressor Co., Ltd., China's foremost leader in compressor technology. This powerhouse, offered at unbeatable factory-direct prices, features a Permanent Magnet Variable Frequency drive that ensures extraordinary energy savings and unparalleled operational efficiency. Designed with top-tier High-Quality Centrifugal Fans, this stationary compressor guarantees exceptional reliability and superior performance, making it the definitive choice for the most demanding industrial applications.
Internal Structure Frontside
Internal Structure Backside
Working Principle
In an ideal air compression scenario, the power needed for single-stage compression is equivalent to the cumulative power for multi-stage compression. However, real-world conditions lead to increased working power due to factors such as coupling transmission power loss, bearing friction, and liquid viscosity's cooling effects. By reducing the compression ratio at each stage, we can ensure that the total power required for multi-stage compression is significantly lower than that for single-stage compression, thereby optimizing efficiency.
The 185kw Two-Stage Screw Air Compressor from Sanzhi (Henan) Compressor Co., Ltd. features a sophisticated dual-stage rotary screw mechanism, comprising both active and passive screws. The active screw, driven by an external transmission device, powers the passive screw. The initial stage incorporates a low-pressure rate screw group, while the second stage employs a high-pressure rate screw group. A sealing air film surrounds each screw, enabling the gas to be efficiently compressed through a cyclic process of suction, pressurization, and exhaust.
First Stage Compression: At this initial stage, the gas undergoes preliminary compression using a low-pressure rate screw group. The gas is drawn into the screw compression chamber through the suction valve, where the high-speed rotation of the screw rotor compresses it further before transferring it to the second stage.
Second Stage Compression: In the second stage, the gas is compressed even further in a tighter screw space, achieving higher temperature and pressure levels. The exhaust valve subsequently opens, effectively releasing the high-pressure gases from the system.
The natural air intake process commences with the first stage, where air is drawn through a high-efficiency air filter and mixed with a minimal amount of lubricating oil within the compression chamber. The resultant gas is compressed to an interstage pressure level and cooled via the cooling channel by oil mist contact, significantly lowering its temperature. This cooled gas then enters the second-stage rotor for final compression to the ultimate exhaust pressure, culminating in the discharge of high-pressure gas through the exhaust valve.
| 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. |
Experience the unrivaled power and efficiency of our High Volume Centrifugal Fan Two-Stage Air Compressor. Featuring a high-speed rotating impeller, the system expertly accelerates and decelerates air intake, leading to superior motor cooling compared to conventional air-cooled fans. This advanced cooling ensures seamless compressor operation and significantly extends its lifespan.
1) High efficiency of PM motor:Our state-of-the-art permanent magnet motor boasts a broader constant torque range and weak magnetic range, delivering an impressive 20-30% higher efficiency over standard motors. It maintains outstanding efficiency even when operating outside the rated frequency.
2) Motor maintenance-free:The permanent magnet motor, free from internal bearings, eliminates maintenance and replacement costs associated with motor bearings.
3) Integrated frequency converter: Equipped with China's premier frequency system, our compressor offers an extensive speed regulation range and high precision. It dynamically adjusts to the user's actual gas demand, providing exceptional energy-saving performance.
4) No transmission loss: The integrated shaft design directly connects the permanent magnet motor and compressor, resulting in a more compact and efficient setup. The absence of couplings or other transmission parts ensures 100% transmission efficiency.
5) Variable frequency start and soft startare seamlessly achieved, greatly reducing the strain on power grid equipment and safeguarding electrical systems from damage.
6) Reduce energy consumption: The frequency conversion range spans from 25% to 100% (compared to the typical 50% to 100%). This enables energy savings exceeding 30% when compared to fixed-speed air compressors, and approximately 5% more savings over standard variable frequency compressors. The more significant the fluctuation in system gas consumption, the more noticeable the energy-saving effect.
7) Two-stage compression unique air end:Our uniquely designed two-stage compression screw machine combines first-stage and second-stage compression rotors within a single case. Driven directly by gears, each rotor achieves optimal linear speed, resulting in higher compression efficiency.
8) Internal spray curtain cooling method: Our high energy-saving internal spray curtain cooling system provides outstanding cooling effects, significantly lowering the temperature of compressed air. This achieves near-isothermal compression, reduces pressure loss between stages, lowers the compression ratio, and enhances overall compression efficiency.
9) Reduce internal leakage:The two-stage compression approach decreases the compression ratio for each stage, minimizing internal leakage from high-pressure to low-pressure ends and boosting volume efficiency.
10) Noise reduction:Two-stage compression lowers the compression ratio, significantly reducing noise levels, especially during unloading.
11) Easy maintenance and service:The two-stage compressor unit, aside from the screw air end, features similar systems and structures to those in single-stage compression, ensuring easy and convenient maintenance and user servicing.
1. Unbeatable Price Advantage
We provide direct ex-factory prices, ensuring our clients remain exceptionally competitive in their respective markets.
2. Direct Factory Transactions
Our products are delivered straight from the factory, enabling us to offer more cost-effective solutions for your business.
3. Extensive OEM & ODM Services
Leveraging our robust production and management capabilities, we deliver outstanding OEM and ODM services tailored precisely to your needs.
4. Tailored Customization
We welcome non-standard, export, and custom orders for voltage, power, pressure, and more. Contact us to discuss your exact requirements.
5. Acceptance of Small Orders
Place a small trial order to experience the exceptional quality of our products firsthand.
6. Swift Delivery
Enjoy our premium products combined with prompt and efficient delivery services.
7. Comprehensive Authorization
For our distributors, we provide full authorization certificates, empowering you to market our SANZHI brand products with utmost confidence.
Sanzhi (Henan) Compressor Co., Ltd is an illustrious manufacturer specializing in screw air compressors and screw vacuum pumps, showcasing over a decade of industry prowess. Our extensive product line includes normal pressure/low-pressure screw air compressors, permanent magnet frequency conversion screw air compressors, two-stage compression screw air compressors, specialized screw air compressors for laser cutting, single-tank and double-tank mobile screw air compressors, electric and diesel mobile screw air compressors, and screw vacuum pumps, among others.
In our production processes, we attain exceptional efficiency through our state-of-the-art, lean multi-air compressor assembly lines. With the commitment of over 50 skilled employees, we continuously enhance management systems like ERP to minimize lead times, ensuring prompt delivery of superior-quality products.
Regarding management, our factory is accredited by the ISO9001 quality management system. We meticulously uphold high-quality management standards, adhering to stringent quality control protocols. Each machine undergoes comprehensive material inspections, production assessments, and pre-delivery evaluations before exiting our facility.
In customer service, our pre-sales team provides expert guidance in selecting the ideal air equipment for diverse facilities, offering extensive customization options including appearance and configuration. We also excel in crafting unique OEM products to meet specific dealer demands. Our after-sales team, composed of seasoned sales and service professionals, ensures swift responses to customer inquiries and needs.
At Sanzhi (Henan) Compressor Co., Ltd, we are dedicated to delivering superior and consistent products, fostering long-term customer relationships. With our efficient delivery, high-quality machines, and competitive prices, we reliably offer you outstanding compressed air solutions.
Our factory is conveniently located in Xinzheng City, Henan Province, China. We offer complimentary transportation from Xinzheng International Airport to our factory, a brief 30-kilometer journey taking approximately one hour. We warmly welcome your visit!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a dedicated manufacturer of screw air compressors with over 10 years of professional experience.
Q2. How do you control quality?
A: 1. Strict inspection of raw materials.
2. Rigorous control of installation procedures.
3. Each machine undergoes a minimum of 5 hours of continuous testing before dispatch.
Q3. What information must I provide to get the suitable machine?
1. The required air delivery capacity (Unit: CFM or m³/Min).
2. The necessary working pressure (Unit: PSI, Bar, or Mpa).
3. The voltage and frequency of your location (V/Hz).
4. Any additional accessories needed, such as an air tank, filters, or air dryers.
Provide us with these details, and we will tailor a 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 offers compressors in voltages of 380V/50Hz/3P, 400V/50Hz/3P, 415V/50Hz/3P, 220V/60Hz/3P, 440V/60Hz/3P, and can customize according to your requirements.
Q6. How long is the delivery time?
A: For standard voltage requirements, our lead time is 15 working days post-confirmation. For non-standard voltage requests, we recommend contacting our sales team to obtain precise timelines tailored to your needs.
Q7. What's the payment term?
A: We require a structured payment plan of 30% T/T in advance, 40% T/T prior to shipment, and the remaining 30% T/T upon receipt of the B/L copy. Payments can be made in both USD and RMB currencies.
Q8. How about your warranty?
A: Our warranty offers comprehensive coverage for one year on the entire machine and two years on the screw air compressor, excluding consumable spare parts.
Q9. What about the maintenance?
A: The initial maintenance should be conducted after 500 operating hours. Subsequent maintenance is recommended every 2000-3000 hours, depending on the actual working environment.
Q10. Can machines be run in high-temperature environment?
A: Absolutely. Our machines are engineered to operate efficiently in high-temperature environments, with a working temperature range from -20° to 45°C (-4°F to 113°F).
Q11. Do you offer OEM service?
A: Indeed, we provide both OEM and ODM services, supported by our professional design team, ensuring high adaptability to your specific requirements.
Q12. How long could your air compressor be used?
A: Our air compressors boast a robust lifespan, typically lasting over 10 years with proper maintenance.
Q13. Will you provide some spare parts for the machines?
A: Yes, we will definitely provide essential spare parts for the machines to ensure their longevity and performance.
Q14. How about your after-sales service?
A: We offer an all-inclusive after-sales service package that includes online guidance for installation and commissioning. Additionally, we can arrange for our engineers to provide on-site training and installation support.
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