China Sanzhi Brand Two-Stage Screw Air Compressor Water Cooled Electric Direct Driven Lubricated for Food Beverage Industry

Internal Structure - Backside

Working Principle

Experience unparalleled efficiency with our advanced air compression process! While single-stage compression aims for optimal power usage, real-world scenarios often lead to increased power consumption due to various factors such as coupling power loss, bearing friction, and cooling liquid viscosity. By intelligently reducing the compression ratio at each stage, our multi-stage compression method significantly curtails these inefficiencies, ensuring superior performance with reduced total power requirements.

Discover the brilliance of our 110kw Sanzhi Two-Stage Screw Air Compressor, a marvel of engineering featuring an innovative dual-stage rotary screw mechanism. Each stage is equipped with its own active and passive screws, where the active screw propels the passive screw using an external power device. The first stage employs a low-pressure rate screw group, while the second stage utilizes a high-pressure rate screw group. Encased in a sealing air film, these screws meticulously compress gas through three essential phases: suction, pressurization, and exhaust.

First Stage Compression: This process begins with the low-pressure rate screw group expertly compressing the gas. The gas enters the compression chamber via a suction valve, where it is gradually squeezed and then transferred to the second stage, driven by the high-speed rotation of the screw rotor.

Second Stage Compression: In this phase, the gas moves into a tighter screw space, encountering heightened compression at increased temperatures and pressures. The high-pressure gases are then efficiently expelled from the system as the exhaust valve opens, perfectly completing the compression cycle.

Our compression journey starts with natural air being meticulously filtered before entering the first compression stage. Here, it mixes with a precise amount of lubricating oil, and this mixture is compressed to interstage pressure. The compressed gas then traverses through a cooling channel, encountering a substantial amount of oil mist, which significantly lowers its temperature. This cooled gas then advances to the second stage for further compression, ultimately being expelled through the exhaust valve, thus masterfully completing the entire compression process.

1) Superior Efficiency of PM Motor:Our state-of-the-art permanent magnet motor offers an extensive constant torque and weak magnetic range, boosting efficiency by an extraordinary 20-30% over conventional motors. Even at non-rated frequencies, it maintains uniform efficiency, ensuring superior motor performance at all times.

2) Maintenance-Free Motor:Designed without internal bearings, our permanent magnet motor eliminates the need for costly and time-consuming maintenance and bearing replacements, providing a seamless, worry-free experience.

3) Integrated Frequency Converter:Equipped with China's leading frequency system, this unit boasts an extensive speed regulation range and exceptional precision. It adapts effortlessly to actual gas demand, delivering remarkable 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 reducing impact on power grid equipment and protecting against potential electrical component damage.

6) Enhanced Energy Efficiency:With a frequency conversion range from 25% to 100%-compared to the standard range of 50% to 100%-our system delivers over 30% energy savings versus fixed speed compressors. It also saves approximately 5% more energy than standard variable frequency compressors, with even higher savings during substantial fluctuations in system gas consumption.

7) Unique Two-Stage Compression Air End:Our two-stage compression screw machine features a specialized air end, incorporating first-stage and second-stage compression rotors within a single casing. These rotors operate through gears to achieve optimal linear speed for each stage, markedly boosting compression efficiency.

8) Innovative Internal Spray Curtain Cooling:Our groundbreaking internal spray curtain cooling technique offers exceptional cooling performance. It significantly reduces compressed air temperature, closely approximating isothermal compression, and minimizes pressure loss between stages, thereby enhancing compression efficiency.

9) Minimized Internal Leakage:Employing a two-stage compression method reduces the compression ratio for each stage, thereby minimizing internal leakage from high-pressure to low-pressure ends and enhancing volumetric efficiency.

10) Noise Reduction:The two-stage compression design significantly lowers the compression ratio, resulting in a substantial reduction in operational noise, particularly during unloading.

11) Simplified Maintenance and Service:In addition to the screw air end, our two-stage compressor unit retains similar systems and structures to single-stage compressors, ensuring straightforward maintenance and user convenience.

ABOUT US
Sanzhi (Henan) Compressor Co., Ltd is a premier manufacturer excelling in the production of screw air compressors and screw vacuum pumps, boasting over a decade of industry experience. Our diverse product portfolio features state-of-the-art screw air compressors and vacuum pumps including normal pressure/low-pressure screw air compressors, permanent magnet frequency conversion models, two-stage compression units, screw air compressors for laser cutting, single-tank and double-tank mobile screw air compressors, electric and diesel mobile screw air compressors, and advanced screw vacuum pumps.

In production, our cutting-edge assembly lines facilitate the most efficient manufacturing processes. Thanks to our dedicated team of over 50 employees, we continuously optimize management systems such as ERP to minimize lead times and ensure the swift delivery of high-quality products.

In management, our factory proudly holds ISO9001 quality management system certification. We adhere to stringent quality standards, implementing rigorous quality control processes. Every machine undergoes comprehensive inspections, including material checks, production assessments, and pre-delivery evaluations, ensuring only the finest products leave our facility.

In customer service, we excel in pre-sales consultation, offering professional guidance to help customers select the ideal air equipment tailored to their specific needs. Our high level of customization extends to both appearance and configuration, and we provide OEM services to meet unique dealer demands. For after-sales support, our professional sales and service team ensures prompt and efficient customer responses.

At Sanzhi (Henan) Compressor Co., Ltd, we are committed to delivering superior, stable products and fostering long-term customer relationships. With efficient delivery, top-quality machines, and competitive pricing, we are your reliable partner for comprehensive compressed air solutions.

Our factory is conveniently located in Xinzheng City, Henan Province, China. We offer complimentary pick-up services from Xinzheng International Airport, located just 30 kilometers away-about an hour's drive. We warmly welcome your visit to our company!

FAQ
Q1. Are you a trading company or manufacturer?
A: We are a seasoned manufacturer specializing in screw air compressors, backed by over 10 years of expertise.

Q2. How do you control quality?
A: 1. We rigorously inspect all raw materials.
2. Installation procedures are meticulously controlled.
3. Each machine undergoes a minimum of 5 hours of continuous testing before leaving our factory to ensure optimal performance.

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 tailored 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 air compressors are available in various voltages including 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, 440v/60hz/3p, and can be customized to meet your specific requirements.

Q6. How long is the delivery time?
A: For standard voltage orders, we guarantee an impressively swift processing time of just 15 working days upon confirmation. For non-standard specifications, please connect with our dedicated sales team for precise timelines and personalized assistance.

Q7. What's the payment term?
A: Our payment terms are structured as follows: an initial 30% T/T deposit, 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, offering you maximum convenience.

Q8. How about your warranty?
A: We proudly offer a comprehensive one-year warranty that covers the entire machine, plus an exclusive two-year warranty for the screw air compressor. Please note, consumable spare parts are not included in this warranty.

Q9. What about the maintenance?
A: The initial maintenance should be performed after 500 hours of operation. Subsequent maintenance is required every 2000-3000 hours, with adjustments based on the actual working environment. This ensures optimal performance and longevity.

Q10. Can machines be run in high-temperature environments?
A: Absolutely! Our machines are expertly engineered to function efficiently in high-temperature conditions, 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 offer both OEM and ODM services, supported by our professional and innovative design team. Custom orders are highly encouraged and welcome, reflecting our commitment to meeting your unique needs.

Q12. How long could your air compressor be used?
A: Typically, our air compressors are built to last, boasting a robust lifespan that exceeds 10 years, ensuring reliable and long-term performance for your operations.

Q13. Will you provide some spare parts for the machines?
A: Certainly! We provide essential spare parts to ensure the ongoing functionality and efficiency of your machines, supporting uninterrupted productivity.

Q14. How about your after-sales service?
A: We offer exceptional after-sales support, including online instructions for installation and commissioning. Our skilled engineers are also available for training sessions and on-site installation assistance, ensuring your complete satisfaction with our products.