Internal Structure Frontside
Internal Structure Backside
Working Principle
In an ideal air compression scenario, the energy required for single-stage pressure transmission equals the cumulative energy needed for multi-stage compression. However, in real-world applications, various factors such as coupling transmission losses, bearing friction, and the cooling effect of viscosity lead to increased operational power demands. By minimizing the compression ratio at each stage, we can significantly reduce the overall power consumption in multi-stage compression, thus enhancing efficiency compared to single-stage compression.
The two-stage screw air compressor from Sanzhi (Henan) Compressor Co., Ltd. is a marvel of engineering, designed with a sophisticated dual-stage rotary screw system. It features active and passive screws at each stage, where the active screw drives the passive screw through an external power mechanism, optimizing overall performance. The first stage employs a low-pressure rate screw group, while the second stage uses a high-pressure rate screw group, each enveloped by a sealing air film. During operation, the air undergoes three essential processes: suction, pressurization, and exhaust.
First Stage Compression: The initial phase of the two-stage screw air compressor features a low-pressure rate screw group that compresses the gas between the screws. Gas is drawn into the compression chamber via the suction valve, and as the screw rotor spins at high speed, the gas is progressively compressed and transported to the next stage, ensuring peak efficiency.
Second Stage Compression: In this stage, the gas enters a more confined screw space, resulting in elevated temperatures and pressures. The exhaust valve then opens, releasing the high-pressure gases from the system, thereby completing the second stage of compression.
Natural air is initially drawn into the first compression stage through an air filter, where it mixes with a small amount of lubricating oil. This mixture is compressed to an interstage pressure before passing through a cooling channel, substantially reducing its temperature with significant oil mist cooling. The cooled gas then enters the second-stage rotor for further compression, achieving the final exhaust pressure. Ultimately, the compressor expels the gas through the exhaust valve, completing the entire compression cycle with remarkable efficiency.
| 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) Unparalleled Efficiency of PM Motor:Experience groundbreaking efficiency with our Permanent Magnet (PM) motor! With its extensive constant torque and weak magnetic ranges, enjoy a remarkable 20-30% increase in efficiency compared to traditional motors. Even beyond the rated frequency, our PM motor sustains its superior efficiency, guaranteeing top-tier performance at all times.
2) Maintenance-Free Motor:Eliminate the hassle of costly bearing maintenance and replacements. Our cutting-edge permanent magnet motor is engineered without bearings, offering a truly maintenance-free experience that saves you both time and money.
3) Advanced Integrated Frequency Converter:Harness the power of China's leading frequency system with our unit, featuring extensive speed regulation and unmatched precision. It adapts effortlessly to actual gas demands, providing exceptional energy-saving performance with every use.
4) Zero Transmission Loss:Achieve 100% transmission efficiency with our compact, integrated shaft connection. The direct drive structure eliminates couplings and other transmission components, ensuring zero transmission loss and maximizing operational efficiency.
5) Variable and Soft Start MechanismsShield your power grid equipment with our variable frequency start and soft start functionalities. These features minimize impact and prevent damage to electrical components, ensuring a prolonged lifespan for your machinery.
6) Enhanced Energy Conservation:Our unit's frequency conversion range of 25% to 100%, compared to conventional ranges of 50%-100%, yields over 30% energy savings compared to fixed-speed compressors. With fluctuating gas consumption, the energy-saving impact is even greater, making it ideal for diverse industrial needs.
7) Unique Two-Stage Compression Air End:Our revolutionary two-stage compression screw design integrates both first and second-stage rotors within a single casing, driven by gears to achieve optimal linear speeds. This significantly boosts overall compression efficiency and reliability.
8) Innovative Internal Spray Curtain Cooling:Our high-energy-saving internal spray curtain cooling method dramatically reduces compressed air temperature, achieving nearly isothermal compression. This innovative technique reduces pressure loss and enhances compression efficiency, setting new benchmarks in cooling technology.
9) Minimized Internal Leakage:Utilizing two-stage compression, we reduce the compression ratio for each stage, effectively minimizing internal leakage and enhancing volumetric efficiency. This results in more reliable and consistent performance.
10) Superior Noise Reduction:Our two-stage compression process not only lowers the compression ratio but also significantly reduces noise levels, especially during unloading, ensuring a quieter and more comfortable working environment.
11) Effortless Maintenance and Service:Maintenance and service are straightforward. Apart from the advanced screw air end, our two-stage compressor's systems and structures mirror those of single-stage units, ensuring user-friendly maintenance and operation, minimizing downtime.
12) Door panels are removable:The unit's casing, crafted from treated metal plates, features high-density sound-absorbing materials to ensure noise levels meet international standards. The door panel is designed for easy opening and removal, providing 270-degree access for maintenance personnel to the interior of the unit.
1. Unbeatable Price Advantage
Experience unparalleled value with Sanzhi (Henan) Compressor Co., Ltd.'s highly competitive ex-factory prices. Our Dependable Sanzhi 132kw Durable Two-Stage Screw Air Compressor for Industrial Use 2024 offers exceptional affordability, ensuring you stay ahead in the competitive market with our cost-effective solutions.
2. Direct Transactions
Benefit from seamless factory-direct deliveries with Sanzhi. Enjoy the most budget-friendly solutions, free from the cost-inflating presence of intermediaries. Our direct approach guarantees you unmatched value.
3. Comprehensive OEM & ODM Services
Backed by robust production and management expertise, Sanzhi flawlessly fulfills all your OEM and ODM service needs. We guarantee precision and satisfaction, ensuring your specific requirements are met with excellence.
4. Tailored Customization
Sanzhi caters to non-standard, export, and customized voltage/power/pressure orders. Share your unique requirements, and our expert team will deliver solutions tailored precisely to your specifications, elevating your industrial operations.
5. Small Order Acceptance
Initiate with a small trial order to experience the superior quality and unmatched performance of the Dependable Sanzhi 132kw Durable Two-Stage Screw Air Compressor firsthand. Witness the excellence we promise.
6. Rapid Delivery
Rely on Sanzhi for swift and timely delivery of premium products. Our dependable service ensures your operations remain uninterrupted, maintaining smooth and efficient workflows.
7. Comprehensive Authorization
Empower your business as a valued distributor with complete authorization certification from Sanzhi (Henan) Compressor Co., Ltd. Confidently market and sell our prestigious SANZHI brand products, enhancing your market presence.
Sanzhi (Henan) Compressor Co., Ltd, a highly esteemed leader in the manufacturing industry, is renowned for its exceptional screw air compressors and vacuum pumps. With over a decade of unwavering dedication, we excel in delivering an extensive array of products including standard and low-pressure screw air compressors, cutting-edge permanent magnet frequency conversion models, robust two-stage compression units, specialized compressors for laser cutting, and versatile mobile screw compressors. Our offerings encompass single and double-tank configurations in both electric and diesel options, as well as pioneering screw vacuum pumps.
Our production processes epitomize modernity and efficiency, featuring state-of-the-art multi-air compressor assembly lines. With a skilled team of over 50 proficient employees, we continually enhance our ERP-based management systems, dramatically reducing lead times while ensuring the prompt delivery of top-tier quality products.
Adhering to the highest standards, our factory proudly holds ISO9001 certification, showcasing our unwavering commitment to quality management. We meticulously enforce stringent quality control measures, ensuring each machine undergoes comprehensive material inspections, meticulous production evaluations, and thorough pre-delivery checks before it leaves our facility.
Our unparalleled customer service ethos is a cornerstone of our success. Our pre-sales team provides expert advice to help you select the perfect air equipment, offering extensive customization options for appearance and configuration. We also excel in creating bespoke OEM products tailored to specific dealer requirements. Our after-sales team, composed of seasoned professionals, guarantees rapid and effective responses to all customer inquiries and needs.
At Sanzhi (Henan) Compressor Co., Ltd, our commitment to delivering high-performance, reliable products is unwavering. We strive to foster lasting customer relationships through our efficient delivery schedules, top-notch machines, and competitive pricing, ensuring you receive outstanding compressed air solutions with every order.
Conveniently situated in Xinzheng City, Henan Province, China, our factory is easily accessible. We offer complimentary transportation from Xinzheng International Airport to our premises, a brief 30-kilometer journey that takes approximately one hour. We warmly welcome your visit!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a dedicated manufacturer specializing in screw air compressors, boasting over a decade of professional expertise.
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 our standard voltage specifications, you can expect a swift lead time of approximately 15 working days after order confirmation. For custom non-standard voltage needs, please reach out to our dedicated sales team for a personalized delivery schedule tailored to your requirements.
Q7. What's the payment term?
A: Our payment terms are designed to be straightforward and secure: an initial 30% T/T deposit in advance, followed by 40% T/T before shipment, and the remaining 30% T/T upon receipt of the B/L copy. We accept payments in both USD and RMB for your convenience.
Q8. How about your warranty?
A: We offer an industry-leading warranty: one year of comprehensive coverage for the entire machine and an extended two-year warranty for the screw air compressor, excluding consumable spare parts.
Q9. What about the maintenance?
A: Initial maintenance is recommended after 500 hours of operation. Subsequently, routine maintenance intervals should be between 2000-3000 hours, depending on specific working conditions, to ensure optimal performance.
Q10. Can machines be run in high-temperature environments?
A: Absolutely, our machines are meticulously engineered to perform efficiently in high-temperature environments, with an operational temperature range from -20° to 45° (-4ºF to 113ºF).
Q11. Do you offer OEM service?
A: Yes, we offer both OEM and ODM services. Our professional design team is committed to providing flexible solutions to meet your specific requirements.
Q12. How long could your air compressor be used?
A: Our air compressors are engineered for exceptional durability, typically offering a lifespan exceeding 10 years.
Q13. Will you provide some spare parts for the machines?
A: Yes, we ensure the availability of spare parts for all our machines to guarantee seamless operation.
Q14. How about your after-sales service?
A: We provide comprehensive after-sales support, including online guidance for installation and commissioning. Additionally, we can dispatch experienced engineers for on-site training and installation assistance to ensure your utmost satisfaction.
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