Introducing the groundbreaking Low-Pressure Compressor, a masterpiece crafted by the esteemed Sanzhi (Henan) Compressor Co., Ltd.! Immerse yourself in the pinnacle of industrial innovation with the illustrious Two-Stage Compression Permanent Magnet Variable Frequency Drive Screw Air Compressor. This engineering marvel is set to redefine excellence, offering an expansive and versatile array of power options tailored to meet every professional requirement effortlessly: 15KW, 22KW, 30KW, 37KW, 45KW, 55KW, 75KW, 90KW, 110KW, 132KW, 160KW, 185KW, 200KW, and the robust 250KW. With a promise of unparalleled efficiency and reliability, this state-of-the-art solution is meticulously designed to address the diverse and demanding needs of modern industries. Elevate your operations to unprecedented heights with this revolutionary compressor, purposefully engineered to transform and enhance your industrial capabilities, thereby setting new benchmarks in performance and innovation.
Internal Structure Frontside
Internal Structure Backside
Working Principle
In the dynamic world of air compression, the optimal scenario envisions the energy necessary for a single-stage pressure transmission to be comparable to the combined energy requirements of multi-stage compression processes. Yet, in practice, elements such as coupling power losses, bearing friction, and the cooling effects of fluid viscosity significantly increase the energy demands. To mitigate these inefficiencies, reducing the compression ratio at each stage becomes crucial. As a result, the overall power consumption for multi-stage compression is more efficient and lower compared to single-stage compression.
Introducing our groundbreaking two-stage screw air compressor, featuring a cutting-edge twin-stage rotary screw mechanism. This extraordinary configuration boasts an active screw in each stage, dynamically driving a passive screw through a robust external power transmission system. The first stage encompasses a low-pressure screw group, succeeded by a high-pressure screw group in the second stage. Each screw is meticulously encased within a sealing air film. During operation, the gas experiences a thorough tri-phase process of suction, pressurization, and exhaust, achieving unparalleled compression efficiency.
First Stage Compression: At the commencement of compression in our two-stage screw air compressor, gas is skillfully compressed using a low-pressure screw group. Initially pulled into the compression chamber via the suction valve, the rapid rotation of the screw rotor adeptly compresses the gas, priming it for a smooth transition to the second stage.
Second Stage Compression: Within this critical stage, the gas is subjected to intensified compression within a more compact screw space, leading to elevated temperatures and pressures. This process culminates with the activation of the exhaust valve, permitting the high-pressure gases to exit the system, thus completing the compression cycle.
The journey begins as natural air is drawn through the air filter into the initial compression stage, where it blends with a precise amount of lubricating oil. This mixture is then compressed to an intermediate pressure before entering a cooling channel. In this stage, the gas traverses through a substantial oil mist, substantially cooling it down. The cooled, compressed gas then advances to the second-stage rotor for its ultimate compression, achieving the final exhaust pressure. The fully compressed gas is then released through the exhaust valve, signifying the culmination of the compression cycle.
1) High efficiency of PM motor:Unlock phenomenal performance with our state-of-the-art permanent magnet motor, a true marvel of engineering. Delivering an expansive constant torque and magnetic range, this motor boosts efficiency by an astounding 20-30% over traditional motors. Its capability to sustain optimal efficiency, even outside its rated frequency, assures unparalleled performance at all times.
2) Two-stage compression unique air end:Presenting our revolutionary two-stage compression screw machine, with an expertly engineered air end. The integration of the first and second-stage compression rotors within a single casing, coupled with gear-driven technology, ensures each rotor achieves perfect linear speeds, propelling compression efficiency to unprecedented heights.
3) Integrated frequency converter: Equipped with China's leading frequency system, our air compressor boasts a vast speed regulation range with precision control. Users can fine-tune the frequency to match real-time gas requirements, unlocking significant energy savings and enhancing operational efficiency.
4) Reduce internal leakage:By harnessing advanced two-stage compression technology, we optimize the compression ratio for each stage, effectively minimizing internal leakage from high to low-pressure ends. This breakthrough significantly enhances volumetric efficiency, elevating performance to new standards.
5) Variable frequency start and the soft startof the motor are seamlessly implemented, dramatically reducing the impact on power grid equipment while safeguarding electrical components from potential harm.
6) Reduce energy consumption: Our innovative frequency conversion system operates within a dynamic range of 25% to 100%, a significant leap from the standard 50% to 100% range. This results in energy savings of over 30% compared to fixed-speed compressors, and approximately 5% more efficient than standard variable frequency models, especially in systems with varying gas demands.
7) No transmission loss: The harmonious integration of our permanent magnet motor and compressor through a direct shaft connection ensures compactness and eliminates couplings or other transmission components. This design achieves unparalleled transmission efficiency, reaching a perfect 100%.
8) Air cooling method: Our cutting-edge energy-efficient air cooling strategy excels in cooling performance, dramatically reducing the temperature of compressed air. By achieving near-isothermal compression, it minimizes pressure loss between stages, lowers the compression ratio, and significantly boosts overall system efficiency.
9)Smart Touch Controller: Step into the future with our advanced smart touch controller, designed for maximum convenience. Its high-resolution color electronic screen requires minimal manual intervention, offering clear visual displays, maintenance reminders, fault alerts, and safety shutdown notifications, making operations smoother than ever.
10)Special Type Intake Valve:Featuring an automatic control mechanism, this valve ensures seamless fuel injection and lubricating oil flow, maintaining optimal engine performance.
The ultra-low oil circuit loss significantly boosts overall efficiency.
In emergency scenarios, the normally open solenoid valve automatically shuts to prevent oil injection, ensuring maximum system safety.
11)Excellent Air Filter:Our superior air filter system excels in delivering pristine air quality with its comprehensive three-stage filtration process. It effectively removes steam and dust, meeting the highest emission standards and ensuring a clean air system.
12)High-Quality Soundproof Cotton:Our expertly engineered noise reduction housing, paired with premium soundproof cotton, dramatically reduces vibrations and noise levels, creating a quieter, more productive workspace.
13) Motor maintenance-free:Discover unparalleled reliability with our ingeniously designed permanent magnet motor, meticulously crafted without internal bearings. This revolutionary feature eliminates the need for motor bearing maintenance and replacement, substantially reducing long-term maintenance costs while enhancing overall dependability. Trust in our innovation for a seamless and efficient operational experience.
14) Noise Reduction Feature:Immerse yourself in unparalleled tranquility with our state-of-the-art, two-stage compression technology. This cutting-edge system masterfully reduces the compression ratio, effectively minimizing operational noise levels, especially during unloading phases. Experience a quieter, more efficient work environment, boosting productivity effortlessly with the Professional Industrial Screw Compressor, an exceptional innovation by Sanzhi.
15) Simple Maintenance and Service:Our groundbreaking two-stage compressor unit cleverly retains the familiar structure and systems of a single-stage compressor. By simply omitting the screw air end, we make maintenance and service straightforward and accessible to all. Enjoy hassle-free upkeep and continuous, peak performance with Sanzhi's Professional Industrial Screw Compressor, ensuring efficiency and ease at every step.
| 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. Competitive Pricing
Partner with Sanzhi (Henan) Compressor Co., Ltd. and unlock unparalleled value. Enjoy factory-direct pricing that places you at the forefront of the competitive market, ensuring your success.
2. Direct Transactions
Experience the best in cost-efficiency and security with direct transactions. Our products are delivered straight from the factory, maximizing your savings and ensuring dependability.
3. OEM & ODM Services
Leverage our extensive production and management expertise. Our OEM and ODM services are tailored to meet your exact specifications, delivering solutions with unmatched precision.
4. Customized Solutions
We excel in non-standard and export orders, adapting to your specific voltage, power, and pressure needs. Share your customization requirements, and we'll craft solutions that perfectly align with your demands.
5. Small Order Acceptance
Embark on a partnership with a small trial order to experience our exceptional quality firsthand, ensuring satisfaction before scaling up your orders.
6. Rapid Delivery
Enjoy peace of mind with our swift and efficient delivery services. We ensure your premium products arrive promptly, supporting the seamless flow of your operations.
7. Comprehensive Authorization
Enhance your distribution capabilities with our full authorization certificates. Market and sell SANZHI brand products confidently, backed by comprehensive certification.
Sanzhi (Henan) Compressor Co., Ltd stands as a distinguished beacon in the manufacturing arena, celebrated for its expertise in advanced screw air compressors and pioneering screw vacuum pumps. With over a decade of unparalleled industry experience, we present a dynamic and versatile product range. Our offerings include normal and low-pressure screw air compressors, permanent magnet frequency conversion screw air compressors, two-stage compression variants, and specialized laser-cutting screw air compressors. We also feature single-tank and double-tank mobile screw air compressors, available in both electric and diesel variants, complemented by our avant-garde screw vacuum pumps.
Our cutting-edge production facility is equipped with advanced multi-air compressor assembly lines, ensuring phenomenal efficiency and precision. Supported by a dedicated team exceeding 50 highly skilled professionals, we continuously advance our management systems, including ERP, to significantly reduce lead times, ensuring swift delivery of superior quality products.
Our meticulously engineered management systems are dedicated to upholding the highest quality standards. Proudly bearing ISO9001 certification, we strictly adhere to quality control protocols. Every machine undergoes comprehensive inspections at various stages-ranging from material checks to production evaluations and pre-delivery assessments-ensuring unmatched product reliability and excellence.
Our outstanding customer service begins with a pre-sales team offering expert guidance to help select the perfect air equipment tailored for diverse facilities. We provide extensive customization options, including both appearance and configuration, and craft bespoke solutions to satisfy specific dealer requirements through our OEM services. Our professional sales and service team is perpetually prepared to offer prompt and effective post-sales support, ensuring your needs are swiftly addressed.
At Sanzhi (Henan) Compressor Co., Ltd, we are unwavering in our commitment to delivering superior, reliable, and stable products. We are devoted to cultivating long-term relationships with our clients, guaranteeing efficient delivery, high-quality machinery, and competitive pricing to ensure you receive the ideal compressed air solution tailored to your needs.
Nestled in the scenic beauty of Xinzheng City, Henan Province, China, our factory is conveniently located just 30 kilometers from Xinzheng International Airport, an easy hour's drive away. We warmly welcome you to visit our facility and personally experience our exceptional offerings!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a distinguished manufacturer specializing in screw air compressors, with a proud history of over a decade of industry expertise.
Q2. How do you control quality?
A: 1. Our raw materials are subject to rigorous inspections to ensure the highest quality.
2. The exacting installation process is meticulously monitored.
3. Each machine undergoes no less than 5 continuous hours of testing before dispatch to guarantee optimal performance.
Q3. What information must I provide to get the suitable machine?
1. Your required air delivery capacity (Unit: CFM or m³/Min).
2. The desired working pressure (Unit: PSI, Bar or Mpa).
3. The voltage and frequency specifications of your country of residence (V/Hz).
4. Any additional accessories needed, such as an air tank, filters, or air dryers.
Provide us with this information, and we will tailor a precise solution just 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 is proud to present a versatile array of voltage options tailored to your unique needs, including 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p. Customize your equipment effortlessly to perfectly suit your specific applications.
Q6. How long is the delivery time?
A: Enjoy rapid fulfillment with standard voltage units, dispatched within 15 working days upon order confirmation. For bespoke configurations, our dedicated sales team is ready to assist you with tailored delivery solutions.
Q7. What's the payment term?
A: Flexible payment terms are available with an initial 30% T/T in advance, followed by 40% T/T before shipment, and a final 30% T/T post-B/L copy. We accommodate transactions in both USD and RMB for your convenience.
Q8. How about your warranty?
A: Benefit from our all-inclusive warranty package: one year coverage for the entire machine and an extended two-year warranty for the screw air compressor, with the exception of consumable spare parts, ensuring peace of mind and reliable performance.
Q9. What about the maintenance?
A: Initiate maintenance at 500 operational hours, then maintain optimal performance with subsequent servicing every 2000-3000 hours. Adapt your maintenance schedule based on actual working conditions for maximum efficiency.
Q10. Can machines be run in high-temperature environment?
A: Absolutely, our machines excel in high-temperature environments, designed to function smoothly within a broad temperature range from -20° to 45° (-4ºF to 113ºF), ensuring consistent performance under demanding conditions.
Q11. Do you offer OEM service?
A: Indeed, we specialize in OEM & ODM services, supported by our expert design team. Bring your custom visions to life with our highly welcomed bespoke orders and exceptional design capabilities.
Q12. How long could your air compressor be used?
A: Our air compressors are meticulously crafted for durability and longevity, typically offering over a decade of reliable service life, ensuring sustained performance and value.
Q13. Will you provide some spare parts for the machines?
A: Certainly, we provide a comprehensive selection of top-quality spare parts, ensuring your machinery operates seamlessly and efficiently for extended periods, maximizing longevity and peak functionality.
Q14. How about your after-sales service?
A: Experience exceptional after-sales service with our thorough online installation and commissioning support. Additionally, benefit from our skilled engineers' onsite training and precise installation assistance whenever necessary, ensuring optimal operation.
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