Internal Structure - Frontside
Internal Structure - Backside
Working Principle
During the air compression process, achieving optimal efficiency in single-stage compression necessitates that the power needed equals the combined effort of multi-stage compression. However, real-world applications often suffer from inefficiencies such as coupling power loss, bearing friction, and cooling liquid viscosity, leading to elevated power consumption. By reducing the compression ratio at each stage, multi-stage compression can effectively minimize these inefficiencies, resulting in significantly lower total power requirements compared to single-stage compression.
Our revolutionary two-stage screw air compressor features an advanced dual-stage rotary screw mechanism, where each stage is equipped with an active and a passive screw. The active screw propels the passive screw through an external power device. The first stage employs a low-pressure rate screw group, while the second stage uses a high-pressure rate screw group. Each screw is enveloped by a sealing air film, meticulously compressing the gas through three distinct phases: suction, pressurization, and exhaust.
First Stage Compression: The journey begins with the low-pressure rate screw group compressing the gas. The gas enters the compression chamber via a suction valve, where it undergoes gradual compression and is then transferred to the second stage under the vigorous rotation of the screw rotor.
Second Stage Compression: In this phase, the gas is directed into a narrower screw space, where it experiences intensified compression at elevated temperatures and pressures. The high-pressure gases are then expelled from the system as the exhaust valve opens, completing the comprehensive compression cycle.
The process initiates with the filtration of natural air before it enters the first compression stage, where it blends with a small amount of lubricating oil. This mixture is compressed to interstage pressure and passes through a cooling channel, encountering a generous amount of oil mist that significantly reduces its temperature. The cooled gas then advances to the second stage for further compression and is ultimately expelled through the exhaust valve, thereby completing the entire efficient compression process.
Water-cooled compressors harness the exceptional cooling power of water to provide superior lubrication and significantly extend the lifespan of friction-prone components. As the cooling water circulates, it meticulously cleans internal parts and dissipates heat from both the cylinder and compressed gas. This highly efficient process drastically reduces exhaust temperature and power consumption, resulting in substantial operational cost savings. To maintain peak performance, regular monitoring and addressing potential scaling issues within the water cooling system are essential.
1) Superior Efficiency of PM Motor:Our state-of-the-art permanent magnet motor offers an extensive constant torque and weak magnetic range, enhancing efficiency by an extraordinary 20-30% over conventional motors. Even at non-rated frequencies, it maintains consistent efficiency, ensuring unparalleled motor performance at all times.
2) Maintenance-Free Motor:Engineered without internal bearings, our permanent magnet motor eliminates the need for costly and time-consuming maintenance and bearing replacements, ensuring a seamless and hassle-free experience.
3) Integrated Frequency Converter:Equipped with China's leading frequency system, this unit boasts an extensive speed regulation range and unmatched precision. It adapts effortlessly to actual gas demand, providing substantial energy-saving benefits for the air compressor.
4) Zero Transmission Loss:Featuring an integrated shaft structure that directly connects the permanent magnet motor and compressor, this design eliminates couplings and other transmission components, achieving impeccable transmission efficiency of 100%.
5) Variable Frequency and Soft Start:Our motor performs variable frequency start and soft start, significantly mitigating the impact on power grid equipment and safeguarding against potential damage to electrical components.
6) Enhanced Energy Efficiency:With a frequency conversion range from 25% to 100%-compared to the standard 50% to 100%-our system delivers over 30% energy savings compared to fixed-speed compressors. It also saves approximately 5% more energy than standard variable frequency compressors, with even higher savings during significant fluctuations in system gas consumption.
7) Unique Two-Stage Compression Air End:Our two-stage compression screw machine features a specialized air end that integrates first-stage and second-stage compression rotors within a single casing. These rotors operate via gears to achieve optimal linear speed for each stage, significantly enhancing compression efficiency.
8) Innovative Internal Spray Curtain Cooling:Our revolutionary internal spray curtain cooling technique delivers exceptional cooling performance. It dramatically lowers compressed air temperature, closely approximating isothermal compression, and reduces pressure loss between stages, thereby increasing compression efficiency.
9) Minimized Internal Leakage:Utilizing a two-stage compression method reduces the compression ratio for each stage, thereby minimizing internal leakage from high-pressure to low-pressure ends and improving volumetric efficiency.
10) Noise Reduction:The two-stage compression design significantly reduces the compression ratio, leading to a substantial reduction in operational noise, particularly during unloading.
11) Simplified Maintenance and Service:Aside from the screw air end, our two-stage compressor unit retains similar systems and structures to single-stage compressors, ensuring straightforward maintenance and user convenience.
1. Unrivaled Price Competitiveness
We offer direct ex-factory pricing that bestows our customers a formidable competitive advantage in the market.
2. Direct Purchase Benefits
Our products are supplied directly from the factory, ensuring you receive the most cost-effective and efficient solutions available.
3. Extensive OEM & ODM Expertise
Leveraging our robust production and management capabilities, we excel in delivering outstanding OEM/ODM services, meticulously customized to meet your distinct needs.
4. Tailored Customization Solutions
We accept non-standard and export orders, customizing aspects such as voltage, power, and pressure to meet your unique requirements. Contact us for your specific needs and we'll tailor the solution just for you.
5. Acceptance of Small Orders
Experience the superior quality of our products by initiating with a small trial order, allowing you to gauge our excellence firsthand.
6. Swift and Efficient Delivery
Experience our high-quality products combined with prompt and highly efficient delivery services, ensuring you never miss a deadline.
7. Full Authorization Support
We provide our distributors with comprehensive authorization certificates, empowering you to sell our SANZHI brand products with utmost confidence and credibility.
ABOUT US
Sanzhi (Henan) Compressor Co., Ltd is a distinguished leader in the manufacture of high-performance screw air compressors and vacuum pumps. With over a decade of industry expertise, we offer an extensive range of cutting-edge products, including standard and low-pressure screw air compressors, premium permanent magnet frequency conversion models, two-stage compression units, specialized screw air compressors for laser cutting, versatile single-tank and double-tank mobile screw air compressors, as well as both electric and diesel mobile options. Our advanced screw vacuum pumps further exemplify our commitment to excellence.
Our state-of-the-art production lines epitomize efficiency, enabling us to streamline manufacturing processes seamlessly. With a dedicated workforce of over 50 skilled employees, we continuously refine our management systems, such as ERP, to drastically reduce lead times and ensure the prompt delivery of superior-quality products.
Our adherence to excellence is evident in our ISO9001 certified quality management system. We enforce stringent quality control protocols, with comprehensive inspections at every stage, from raw material assessments to final pre-delivery evaluations. This rigorous approach guarantees that only top-tier products depart our facility.
Our customer service is unparalleled, offering expert pre-sales consultation to help clients identify the perfect air equipment for their needs. We excel in customization, tailoring both appearance and configuration, and offer OEM services to accommodate unique dealer requirements. Our dedicated sales and service team ensures rapid and effective after-sales support.
At Sanzhi (Henan) Compressor Co., Ltd, we are unwavering in our commitment to providing superior, dependable products and fostering enduring customer relationships. Our offerings include swift delivery, top-quality machines, and competitive pricing, making us your trusted partner for all compressed air solutions.
Strategically located in Xinzheng City, Henan Province, China, our facility offers easy access and free pick-up services from Xinzheng International Airport, just 30 kilometers away. We warmly invite you to visit our company and experience our hospitality firsthand.
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 industry expertise.
Q2. How do you control quality?
A: 1. We conduct stringent inspections of all raw materials.
2. Installation procedures are meticulously monitored.
3. Every machine undergoes a minimum of 5 hours of continuous testing to ensure optimal performance before leaving our factory.
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 just for you!
Q4. What is the general unit conversion?
1 Bar = 0.1 Mpa = 14.5 PSI
1 m³/min = 35.32 cfm
1 KW = 1.34 HP
Q5. What is the available voltage air compressor?
A: Sanzhi air compressors are available in multiple voltage configurations, including 380V/50Hz/3P, 400V/50Hz/3P, 415V/50Hz/3P, 220V/60Hz/3P, 440V/60Hz/3P, and can be customized to suit your specific requirements.
Q6. How long is the delivery time?
A: For standard voltage orders, your request will be processed within an impressively swift 15 working days upon confirmation. For non-standard specifications, please contact our dedicated sales team for detailed timelines and personalized assistance.
Q7. What's the payment term?
A: Our payment terms are as follows: an initial 30% T/T deposit upfront, an additional 40% T/T prior to 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 proudly offer a comprehensive one-year warranty covering the entire machine, alongside an extended two-year warranty specifically for the screw air compressor. Please note, consumable spare parts are excluded from this warranty.
Q9. What about the maintenance?
A: The initial maintenance should be carried out after 500 hours of operation. Thereafter, maintenance is required every 2000-3000 hours, adjusted appropriately based on the actual working environment.
Q10. Can machines be run in high-temperature environment?
A: Absolutely! Our machines are meticulously engineered to operate efficiently even in high-temperature environments, with an optimal working temperature range from -20°C to 45°C (-4°F to 113°F).
Q11. Do you offer OEM service?
A: Yes, indeed! We proudly offer both OEM and ODM services, backed by our professional and creative design team. Custom orders are highly welcome and encouraged.
Q12. How long could your air compressor be used?
A: Typically, our air compressors boast a robust lifespan exceeding 10 years, ensuring long-term reliability and performance.
Q13. Will you provide some spare parts for the machines?
A: Certainly! We will provide the necessary spare parts to ensure the continued functionality and efficiency of your machines.
Q14. How about your after-sales service?
A: We offer unparalleled after-sales support, including online instructions for installation and commissioning. Additionally, our skilled engineers are readily available for training sessions and on-site installation assistance, ensuring your complete satisfaction.
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