Internal Structure - Frontside
Internal Structure - Backside
Working Principle
In the realm of air compression, achieving optimal efficiency in single-stage compression necessitates that the power expended equals the cumulative energy of multi-stage compression. Yet, the practical world often presents challenges such as coupling power loss, bearing friction, and the viscosity of cooling liquids, all contributing to increased power consumption. By strategically lowering the compression ratio at each stage, multi-stage compression cleverly minimizes these inefficiencies, resulting in a significantly reduced total power requirement when compared to single-stage compression.
Unveiling our revolutionary two-stage screw air compressor, engineered with a dynamic dual-stage rotary screw setup, where each stage is fitted with both an active and a passive screw. The active screw drives the passive counterpart through an external power source. The initial stage features a low-pressure rate screw assembly, followed by a high-pressure rate screw assembly in the second stage. Each screw is encased in a sealing air film, skillfully compressing the gas through three distinct phases: suction, pressurization, and exhaust.
First Stage Compression: The process commences as the low-pressure rate screw group adeptly compresses the gas. Gas flows into the compression chamber through a suction valve, where it's gradually compressed and then channeled to the second stage under the robust rotation of the screw rotor.
Second Stage Compression: During this advanced phase, the gas is funneled into a more confined screw space, enduring compression at heightened temperatures and pressures. This results in the high-pressure gases being released from the system as the exhaust valve opens, thus bringing the compression cycle to its conclusion.
The operation begins with ambient air being thoroughly filtered before it enters the initial compression stage, where it combines with a small amount of lubricating oil. This mixture undergoes compression to interstage pressure and traverses a cooling channel, where it encounters a substantial oil mist that significantly reduces its temperature. The cooled gas then progresses to the second stage for additional compression, eventually being discharged through the exhaust valve, thus completing the entire comprehensive compression sequence.
Water-cooled compressors tap into the exceptional cooling performance of water, significantly enhancing lubrication and extending the lifespan of components vulnerable to friction. As cooling water circulates, it not only efficiently cleanses internal parts but also effectively dissipates heat from both the cylinder and compressed gas. This meticulous process substantially reduces exhaust temperature and power consumption, culminating in remarkable operational cost efficiency. Regular inspection and proactive management of potential scaling issues within the water cooling system are essential to sustaining peak performance.
1) Superior Efficiency of PM Motor:Our state-of-the-art permanent magnet motor provides a broad spectrum of constant torque and a wide weak magnetic range. This innovation enhances efficiency by a notable 20-30% compared to traditional motors. Even under non-standard frequency conditions, it delivers consistent efficiency, ensuring that the motor operates at the pinnacle of its performance at all times.
2) Maintenance-Free Motor:Ingeniously designed without internal bearings, our permanent magnet motor eliminates the necessity for costly, labor-intensive maintenance and bearing replacements, thereby offering a streamlined, hassle-free experience.
3) Integrated Frequency Converter:Equipped with China's leading frequency system, this unit boasts an expansive speed regulation range and unrivaled precision. It seamlessly aligns with actual gas demands, delivering significant 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 eradicates couplings and other transmission components, thus achieving impeccable transmission efficiency of 100%.
5) Variable Frequency and Soft Start:Our motor executes variable frequency starts and soft starts, drastically minimizing impact on power grid equipment and ensuring protection against potential damage to electrical components.
6) Enhanced Energy Efficiency:With a cutting-edge frequency conversion range extending from 25% to 100%-as opposed to the standard 50% to 100%-our system offers over 30% energy savings compared to fixed-speed compressors. It exceeds standard variable frequency compressors by saving about 5% more energy, with even greater savings during significant fluctuations in system gas consumption.
7) Unique Two-Stage Compression Air End:Our two-stage compression screw machine incorporates a specialized air end, fusing first-stage and second-stage compression rotors within a single casing. These rotors function through gears to attain ideal linear speed for each stage, substantially boosting compression efficiency.
8) Innovative Internal Spray Curtain Cooling:Our groundbreaking internal spray curtain cooling technique delivers outstanding cooling prowess. This method drastically decreases compressed air temperature, closely mimicking isothermal compression, and diminishes pressure loss between stages, thereby amplifying compression efficiency.
9) Minimized Internal Leakage:Employing a two-stage compression process lowers the compression ratio for each stage, thereby reducing internal leakage from high-pressure to low-pressure ends and bolstering volumetric efficiency.
10) Noise Reduction:The two-stage compression design effectively diminishes the compression ratio, leading to a notable decrease in operational noise, particularly during unloading.
11) Simplified Maintenance and Service:Beyond the screw air end, our two-stage compressor unit retains similar systems and structures to single-stage compressors, making maintenance straightforward and ensuring user convenience.
1. Unrivaled Price Competitiveness
Our direct ex-factory pricing strategy sets a new benchmark for value, empowering our clients to wield a formidable competitive edge in the marketplace. Revel in unparalleled value that merges fiscal brilliance with unwavering quality.
2. Direct Purchase Benefits
By sourcing our products directly from the factory, you are assured of acquiring the most economically efficient solutions, bypassing intermediaries, and receiving the savings firsthand.
3. Extensive OEM & ODM Expertise
Leverage our formidable production and management prowess to access outstanding OEM/ODM services, precision-crafted to meet your exact specifications, ensuring your vision comes to life with bespoke excellence.
4. Tailored Customization Solutions
We accommodate both non-standard and export orders, offering customization in areas such as voltage, power, and pressure to align perfectly with your unique specifications. Share your specific requirements with us for tailor-made solutions.
5. Acceptance of Small Orders
Embark on your journey with us through a small trial order, experiencing the superior quality of our offerings firsthand before scaling up to larger commitments, ensuring complete satisfaction with our exemplary standards.
6. Swift and Efficient Delivery
Indulge in our premium products, harmonized with our swift and efficient delivery services, guaranteeing that your orders are executed with promptness and reliability.
7. Full Authorization Support
We equip our distributors with thorough authorization certificates, allowing you to market our SANZHI brand products with assured confidence and full official support.
ABOUT US
Sanzhi (Henan) Compressor Co., Ltd stands as a leader in manufacturing, known for crafting top-tier screw air compressors and screw vacuum pumps. With over ten years of expertise, our extensive product lineup includes cutting-edge screw air compressors and vacuum pumps. We specialize in normal pressure, low-pressure, and permanent magnet frequency conversion models, two-stage compression units, and models tailored for laser cutting applications. Our range extends to single-tank and double-tank mobile screw air compressors, available in both electric and diesel variants. Additionally, we offer state-of-the-art screw vacuum pumps.
Our production prowess is enhanced by modern assembly lines, ensuring manufacturing efficiency and excellence. Backed by a dedicated team of more than 50 skilled employees, we optimize management systems like ERP to reduce lead times, ensuring rapid delivery of premium products.
Our commitment to quality is evidenced by our ISO9001 certification, reflecting our adherence to strict quality standards. Our rigorous quality control processes include comprehensive inspections-covering material checks, production assessments, and pre-delivery evaluations-guaranteeing that only superior products leave our facility.
Our customer service is unmatched, with pre-sales consultations providing expert guidance to help clients select the perfect air equipment to suit their needs. We offer extensive customization for both appearance and configuration, along with OEM services to fulfill unique dealer requirements. Our after-sales support team, composed of professional sales and service experts, ensures fast and effective customer communication.
At Sanzhi (Henan) Compressor Co., Ltd, we are dedicated to providing exceptional, reliable products while nurturing enduring customer relationships. With our prompt delivery, superior machinery, and competitive pricing, we are your trusted partner for all-encompassing compressed air solutions.
Our factory's strategic location in Xinzheng City, Henan Province, China, offers convenience with complimentary pick-up services from Xinzheng International Airport, a mere 30 kilometers away-approximately an hour's drive. We cordially invite you to visit our company!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a distinguished manufacturer with a specialization in screw air compressors, built on more than a decade of industry expertise.
Q2. How do you control quality?
A: 1. Our quality control begins with meticulous inspections of all raw materials.
2. We maintain stringent control over our installation procedures.
3. To ensure peak performance, each machine undergoes no less than 5 hours of continuous testing before it leaves our factory.
Q3. What information must I provide to get the suitable machine?
1. Required air delivery capacity, specified in CFM or m³/Min.
2. Desired working pressure, indicated in PSI, Bar, or Mpa.
3. Voltage and frequency requirements for your locale (V/Hz).
4. Any additional accessories you require, such as air tanks, filters, or air dryers.
Share these details, and we will craft a customized solution just for you!
Q4. What is the general unit conversion?
1Bar equals 0.1Mpa, which is equivalent to 14.5PSI.
1m³/min is equal to 35.32cfm.
1KW equates to 1.34HP.
Q5. What is the available voltage air compressor?
A: Sanzhi air compressors are offered in a variety of voltages including 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, 440v/60hz/3p, with customization options to meet your precise needs.
Q6. How long is the delivery time?
A: For standard voltage orders, we ensure a swift and efficient process, completing your request within an impressive 15 working days following confirmation. For orders with non-standard specifications, please contact our dedicated sales team, who will provide you with detailed timelines and personalized assistance to thoroughly cater to your individual needs.
Q7. What's the payment term?
A: Our payment terms are designed for flexibility and convenience: we require an initial 30% T/T deposit upfront, a subsequent 40% T/T payment before shipment, and the final 30% T/T upon receipt of the B/L copy. To facilitate a smooth transaction, we accept payments in both USD and RMB.
Q8. How about your warranty?
A: We proudly offer a comprehensive warranty package that includes a full one-year warranty on the entire machine and an extended two-year warranty specifically for the screw air compressor, although consumable spare parts are not covered under this warranty.
Q9. What about the maintenance?
A: The initial maintenance is critical and should take place after the first 500 hours of operation. Afterward, regular maintenance is required every 2000-3000 hours, with adjustments based on the actual working environment to sustain optimal performance.
Q10. Can machines be run in high-temperature environment?
A: Absolutely! Our machines are expertly engineered to deliver outstanding performance even in high-temperature environments, with optimal operation within a temperature range of -20°C to 45°C (-4°F to 113°F).
Q11. Do you offer OEM service?
A: Yes, indeed! We are delighted to offer extensive OEM and ODM services, backed by our highly professional and imaginative design team. We warmly welcome and encourage custom orders to fulfill your distinct requirements.
Q12. How long could your air compressor be used?
A: Our air compressors are constructed for durability, typically boasting a substantial lifespan that exceeds 10 years, providing long-term reliability and exceptional performance.
Q13. Will you provide some spare parts for the machines?
A: Absolutely! We will furnish the essential spare parts necessary to maintain the ongoing functionality and efficiency of your machines, ensuring they remain in top operational condition.
Q14. How about your after-sales service?
A: We deliver outstanding after-sales support, offering comprehensive online instructions for installation and commissioning. Additionally, our expert engineers are readily available for full training sessions and on-site installation assistance, ensuring your complete satisfaction.
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