Internal Structure Frontside
Internal Structure Backside
Working Principle
In an ideal air compression scenario, the power needed for single-stage pressure transmission equates to the cumulative power for multi-stage compression. However, during actual compression, additional power is required due to factors such as power loss from coupling transmission, bearing friction, and the cooling effects of liquid viscosity. To mitigate unnecessary power expenditure, reducing the compression ratio of each stage can ensure that the total power required for multi-stage compression is lower than that for single-stage compression. This approach optimizes energy efficiency and enhances performance.
The two-stage screw air compressor is intricately designed with a two-stage rotary screw mechanism, consisting of both active and passive screws. The active screw, powered by an external transmission device, propels the passive screw. The initial stage employs a low-pressure rate screw cluster, followed by a high-pressure rate cluster in the second stage. Each screw is enveloped by a sealing air film, which facilitates gas compression through a refined three-phase process: suction, pressurization, and exhaust. This sophisticated design ensures superior compression efficiency and reliability.
First stage compression: In the initial phase, the two-stage screw air compressor employs a low-pressure screw group, where gas is effectively squeezed. This gas enters the screw compression chamber via the suction valve. Through the high-speed rotation of the screw rotor, the gas is progressively compressed, then seamlessly transferred to the second stage, setting the foundation for advanced compression processes.
Second stage compression: In this advanced phase, the gas transitions into a denser screw space, experiencing compression at elevated temperatures and pressures. Upon reaching optimal conditions, the exhaust valve activates to expel high-pressure gases from the system, completing the two-stage compression sequence with enhanced efficiency and effectiveness.
Natural air initially enters the first stage of compression through an air filter, where it integrates with a minimal quantity of lubricating oil within the compression chamber. The mixed gas is concurrently compressed to interstage pressure. This pressurized gas navigates through the cooling channel, encountering substantial oil mist, which significantly reduces its temperature. The cooled, compressed gas then enters the second-stage rotor for further compression, achieving the final exhaust pressure. Ultimately, the compressor discharges the gas through the exhaust valve, culminating the intricate and efficient compression process.
Water-cooled compressors use water as a cooling medium to enhance performance and longevity. The cooling water circulates through the air compressor, playing a crucial role in lubrication, which extends the life of components prone to wear and tear. As the compressor operates, the cooling water absorbs heat from the cylinder and the compressed gas, significantly lowering exhaust temperatures and reducing power consumption, which in turn slashes the operating costs of the air compressor. However, it is essential to monitor and address the potential scaling issues within the water cooling system to maintain efficiency.
1) Superior Efficiency of PM Motor: Our PM motor boasts a wider range of constant torque and weak magnetic ranges, delivering efficiency levels that surpass traditional motors by an impressive 20-30%. Even when the permanent magnet motor operates beyond its rated frequency, it maintains consistently high efficiency, ensuring optimal performance at all times.
2) Maintenance-Free Motor Design: The innovative design of the permanent magnet motor includes the absence of internal bearings, thereby eliminating the costs associated with bearing maintenance and replacement, delivering seamless and hassle-free operation.
3) State-of-the-Art Integrated Frequency Converter: Utilizing the leading frequency system in China, our compressor offers an extensive range of precise speed regulation, dynamically adjusting to your actual gas demands for an exceptional energy-saving experience.
4) Zero Transmission Loss: Engineered with an embedded integrated shaft and direct connection structure, our compressor design is remarkably compact. Without the need for couplings or other transmission components, we ensure a flawless 100% transmission efficiency.
5) Variable Frequency Start and Soft Start Capabilities are seamlessly achieved, significantly minimizing impact on power grid equipment and preventing damage to electrical components, ensuring a smooth and reliable operation.
6) Optimize Energy Consumption: Our frequency conversion range spans from 25% to 100%, outperforming standard conversions which range from 50% to 100%. Compared to fixed-speed compressors, energy savings exceed 30%, while our cutting-edge technology saves about 5% more than typical variable frequency compressors. Greater system gas consumption fluctuations further enhance these energy-saving benefits.
7) Unique Two-Stage Compression Air End: Featuring an innovative two-stage compression screw design, our air end incorporates both first-stage and second-stage compression rotors within a single casing. These rotors are directly driven by gears, ensuring each stage achieves optimal linear speed for unmatched compression efficiency.
8) Innovative Internal Spray Curtain Cooling Method: This advanced high energy-saving internal spray curtain cooling technique dramatically lowers compressed air temperatures, achieving near-isothermal compression. It also reduces pressure loss between the first and second stages, decreasing the compression ratio and enhancing compression efficiency.
9) Minimize Internal Leakage: Our two-stage compression approach lowers the compression ratio for each stage, reducing internal leakage from high-pressure to low-pressure ends and significantly improving volumetric efficiency.
10) Effective Noise Reduction: The reduction of compression ratios in our two-stage compression notably diminishes noise output, especially during unloading, creating a quieter and more pleasant working environment.
11) Facilitate Maintenance and Service: The two-stage compressor unit shares similar systems and structures with single-stage designs, except for the screw air end. This similarity simplifies maintenance and ensures ease of use for our customers.
1. Unbeatable Price Advantage
We deliver our products at ex-factory prices directly to our customers, empowering them with a distinct competitive edge in their respective markets.
2. Seamless Direct Deal
All our offerings are directly sourced from the factory, ensuring that you receive more cost-effective solutions without any intermediary costs.
3. Comprehensive OEM & ODM Services
Leveraging our robust production and management capabilities, we offer exceptional OEM/ODM services tailored to meet your specific requirements.
4. Tailored Customised Service
We welcome non-standard, export, and bespoke orders, allowing customization in voltage, power, pressure, etc. Please contact us for any specific demands.
5. Flexibility with Small Orders
Experience our product quality firsthand by placing a small initial trial order, ensuring your complete satisfaction before a larger commitment.
6. Prompt and Reliable Fast Delivery
Receive our premium products with the assurance of timely delivery, ensuring your operations run smoothly and efficiently.
7. Extensive Complete Authorization
As a distributor, gain full authorization, providing you the legitimacy and confidence to market our prestigious SANZHI brand products.
Sanzhi (Henan) Compressor Co., Ltd is a renowned manufacturer in the realm of screw air compressors and screw vacuum pumps, boasting over a decade of rich experience. Our expansive product lineup features an impressive array of state-of-the-art solutions, including normal pressure and low-pressure screw air compressors, advanced permanent magnet frequency conversion screw air compressors, and the innovative two-stage compression screw air compressors. We cater to specialized applications with our screw air compressors for laser cutting and offer versatile mobility solutions through single-tank and double-tank mobile screw air compressors, available in electric and diesel variants. Our expertise also extends to screw vacuum pumps, ensuring that we meet diverse industrial needs with precision and reliability.
In our production processes, we harness the power of lean and modern multi-air compressor assembly lines, achieving unparalleled efficiency. Our dedicated team of over 50 skilled employees is committed to constantly refining our management systems, including ERP optimization, to ensure reduced lead times and the rapid delivery of high-quality products. This dedication to efficiency allows us to meet your demands swiftly and accurately.
In the realm of management, our factory proudly holds the ISO9001 quality management system certification. We are steadfast in our commitment to upholding a rigorous quality management system, meticulously adhering to standardized quality control processes. Each machine that leaves our facilities undergoes a thorough experience of material inspection, production examination, and pre-delivery scrutiny, guaranteeing excellence and reliability.
When it comes to customer service, our comprehensive approach begins with pre-sales guidance. We provide expert advice to help customers select the optimal air equipment for their diverse facilities, offering high levels of customization in design and configuration. We specialize in OEM services to create unique products tailored to dealers' specific requests. On the after-sales side, our professional sales and service team ensures rapid and effective responses to customer inquiries, solidifying our commitment to exemplary support.
At Sanzhi (Henan) Compressor Co., Ltd, our mission is to deliver superior and consistently reliable products, fostering long-term relationships with our valued customers. With our promise of efficient delivery, exceptional quality machinery, and competitive pricing, we stand as your trusted partner in providing comprehensive and satisfactory compressed air solutions.
Our factory is strategically located in Xinzheng City, Henan Province, China. We extend a warm invitation to visit us, and for your convenience, we offer pick-up service from Xinzheng International Airport, situated just 30 kilometers away, a journey of approximately one hour. We eagerly await your visit to our esteemed company!
FAQ
Q1. Are you a trading company or manufacturer?
A: We proudly stand as a seasoned manufacturer of screw air compressors, boasting a rich heritage of over a decade in the industry.
Q2. How do you control quality?
A: 1. We conduct rigorous inspections of all raw materials, ensuring only the highest quality components are used.
2. Our meticulous installation procedures ensure precision and perfection at every step.
3. Every machine is subjected to a minimum of 5 hours of continuous testing, guaranteeing optimal performance before it leaves our premises.
Q3. What information must I provide to get the suitable machine?
1. Specify your required air delivery capacity (Unit: CFM or m³/Min) to match your operational demands.
2. Indicate the exact working pressure you need (Unit: PSI, Bar, or Mpa) for seamless integration.
3. Provide the voltage and frequency specifications of your location (V/Hz) for compatibility.
4. Inform us if you require additional accessories like an air tank, filters, and/or air dryers to complete your setup.
Share these details with us, and we will craft a customized scheme tailored just for you!
Q4. What is the general unit conversion?
1Bar equates to 0.1Mpa and is equivalent to 14.5PSI, providing standard conversion metrics.
1m³/min translates to 35.32cfm, aiding in precise measurement conversions.
1KW is equal to 1.34HP, ensuring power compatibility across various systems.
Q5. What is the available voltage air compressor?
A: Sanzhi offers versatile voltage options: 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, 440v/60hz/3p, with customization available to meet your specific needs.
Q6. How long is the delivery time?
A: For standard voltage units, we ensure delivery within 15 working days post order confirmation. For non-standard requests, please connect with our sales team for precise timelines.
Q7. What's the payment term?
A: Our payment terms are structured as 30% T/T in advance, 40% T/T prior to shipment, and 30% T/T upon receipt of the B/L copy. Payments can be made in USD or RMB.
Q8. How about your warranty?
A: We offer a comprehensive warranty of one year 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: The initial maintenance should occur after 500 hours of use, followed by regular maintenance every 2000-3000 hours, considering 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 operational ranges from -20° to 45°(-4ºF-113ºF).
Q11. Do you offer OEM service?
A: Indeed, we welcome OEM & ODM orders with open arms, backed by our expert design team ready to bring your vision to life.
Q12. How long could your air compressor be used?
A: Our air compressors are designed for longevity and reliability, typically serving for over 10 years.
Q13. Will you provide some spare parts for the machines?
A: Yes, we certainly provide spare parts to ensure your machines remain in peak condition.
Q14. How about your after-sales service?
A: We offer comprehensive after-sales support, including online installation and commissioning instructions, and can arrange for our engineers to assist you with training and installation.
){kind=link}