Product Description

Introducing the groundbreaking Low-Pressure Compressor, an extraordinary innovation brought to you exclusively by Sanzhi (ZheJiang ) Compressor Co., Ltd.! Embark on an unrivaled journey of industrial CHINAMFG with our spectacular Two-Stage Compression Permanent Magnet Variable Frequency Drive Screw Air Compressor. This exceptional engineering marvel is designed to offer an outstanding array of power options, ranging from a robust 15KW to an impressive 250KW. Engineered with precision and versatility in mind, this powerhouse of reliability and efficiency is truly set to revolutionize your operations. Experience the transformative power of this state-of-the-art compressor, meticulously crafted to exceed the diverse and demanding requirements of today’s industries. Immerse yourself in the pinnacle of air compression technology with this high-capacity machine, ideally suited for heavy-duty applications. With its sophisticated two-stage air cooling system, the compressor ensures unrivaled performance and longevity, establishing itself as the premier choice for businesses aiming to streamline operations and maximize productivity. Discover the pioneering brilliance of Sanzhi, where superior quality harmonizes seamlessly with exceptional performance, elevating industrial expectations to unprecedented new heights.

Product Structure

Internal Structure Frontside

Internal Structure Backside

Working Principle

Within this expertly crafted air compression environment lies the secret to unlocking unprecedented energy efficiency. Sanzhi (ZheJiang ) Compressor Co., Ltd. presents a marvel where single-stage compression boasts energy needs akin to multi-stage systems. However, real-world factors like coupling power losses, bearing friction, and fluid viscosity-driven cooling effects can elevate energy consumption. By meticulously optimizing the compression ratio at each stage, these inefficiencies are significantly reduced. Consequently, our multi-stage compression exhibits substantially lower total power consumption compared to single-stage alternatives, guaranteeing a refined and economically astute operation.

Introducing the CHINAMFG of innovation from Sanzhi (ZheJiang ) Compressor Co., Ltd.: the state-of-the-art Efficient Twin-Stage Two-Stage Air Cooling Screw Air Compressor. This engineering masterpiece features a meticulously refined twin-stage rotary screw mechanism, with each stage’s active screw powered by a robust external power transmission system. The initial stage showcases a low-pressure screw group, seamlessly transitioning to a high-pressure screw group in the second stage. Each screw is enveloped in a protective sealing air film. During operation, the gas experiences an intricate three-phase cycle of suction, pressurization, and exhaust, delivering unmatched compression efficiency and superior performance.

First Stage Compression: Journey into groundbreaking innovation with our two-stage screw air compressor, expertly compressing gas using the low-pressure screw group. Initially, gas is drawn into the compression chamber via the suction valve, where the rapid rotation of the screw rotor compresses it efficiently. Following this primary compression, the gas transitions effortlessly to the second stage, paving the way for further compression excellence.

Second Stage Compression: Elevate to the next tier as the gas experiences intensified compression within a more compact screw space, achieving heightened temperatures and pressures. This culminates as the exhaust valve opens, allowing high-pressure gases to exit the system, thus completing the entire compression cycle with unparalleled precision and effectiveness.

The air begins its sophisticated journey by entering through the air filter into the first compression stage, where it amalgamates with a precisely calculated amount of lubricating oil. This blend is compressed to an intermediate pressure, after which the gas transitions into a cooling channel. Here, it interacts with a generous oil mist, dramatically reducing the temperature. The cooled, compressed gas then advances to the second-stage rotor for its ultimate compression to the desired exhaust pressure. CHINAMFG CHINAMFG this final stage, the fully compressed gas exits the system through the exhaust valve, culminating the compression cycle with exceptional precision and efficiency.

Detailed Photos

1) High efficiency of PM motor:Discover a new CHINAMFG of energy efficiency with our state-of-the-art permanent magnet motor. This cutting-edge powerhouse boosts efficiency by an extraordinary 20-30% over conventional models. Its impressive range of constant torque and forward-thinking weak magnetic dynamics ensure it maintains unrivaled efficiency, even when exceeding rated frequency, providing optimal performance at all times.

2) Two-stage compression unique air end:Embrace the future with our revolutionary two-stage compression system, showcasing a uniquely crafted air end. This innovation masterfully combines dual compression rotors within a single casing, operating through direct gear-driven rotors at ideal linear speeds. Experience a remarkable increase in compression efficiency and unmatched reliability.

3) Integrated frequency converter: Harness the power of China’s leading frequency system with our compressor’s vast speed regulation range and precise control. Effortlessly adjust the frequency to match real-time gas needs for outstanding energy savings and enhanced operational performance.
 

4) Reduce internal leakage:Our pioneering two-stage compression technology meticulously optimizes the compression ratio per stage, significantly reducing internal leakage from high to low-pressure zones. This breakthrough elevates volumetric efficiency and enhances overall compressor performance.

5) Variable frequency start and the soft startOur motor, boasting variable frequency and soft start features, is designed to significantly reduce the stress on power grid systems. These features protect electrical components from potential damage, thus prolonging their lifespan remarkably.

6) Reduce energy consumption: Our cutting-edge frequency conversion system seamlessly operates from an impressive 25% to 100%, surpassing the typical 50% to 100% range. It delivers over 30% energy savings compared to fixed-speed compressors, plus an additional 5% efficiency boost over standard variable frequency systems, ideal for varying gas demands.
 

7) No transmission loss: Our brilliantly efficient design features a direct link between the permanent magnet motor and compressor, eliminating transmission components, ensuring flawless 100% transmission efficiency and guaranteeing CHINAMFG performance without compromise.

8) Air cooling method: Our superior air cooling system delivers exceptional cooling power, markedly lowering compressed air temperatures. This approach supports near-isothermal compression, reduces pressure loss, optimizes the compression ratio, and elevates overall efficiency.

9)Smart Touch Controller: Our advanced smart controller, equipped with intuitive intelligence, drastically reduces manual interventions. With a high-resolution color display, it offers user-friendly graphical interfaces, timely maintenance reminders, fault alerts, and safety shutdown notifications to ensure uninterrupted, smooth operation.
 

10)Special Type Intake Valve:Automatic opening ensures seamless engine fuel injection and oil circulation, significantly enhancing overall system efficiency.
With remarkably diminished oil circuit loss, our system achieves a notable efficiency enhancement.
The normally open solenoid valve ensures a secure seal during emergency stops, preventing oil injection and ensuring utmost system safety.

11)Excellent Air Filter:Our top-tier air filter offers unparalleled purification with a robust three-stage filtration system, ensuring premium air quality. It effectively eliminates steam and dust, surpassing the highest emission standards for environmentally conscious operations.

12)High-Quality Soundproof Cotton:Featuring innovative noise reduction housing and premium soundproof cotton, our design dramatically reduces operational vibrations and noise, creating a quieter, more efficient workplace environment.
 

13) Motor maintenance-free:Unveil the pinnacle of compressor technology with our revolutionary maintenance-free permanent magnet motor design, meticulously engineered to eliminate the complexity of internal bearings. This groundbreaking advancement eradicates the inconvenience of bearing maintenance and replacements, significantly curtailing long-term maintenance expenditures. As a result, our compressor systems are synonymous with enhanced reliability, consistently achieving CHINAMFG performance over extended durations. Embrace our innovative solution for unmatched cost-efficiency and extraordinary dependability.

14) Noise Reduction: Immerse yourself in the tranquility provided by Sanzhi (ZheJiang ) Compressor Co., Ltd.’s advanced two-stage compression technology. This remarkable system is expertly designed to optimize the compression ratio, leading to a significant reduction in operational noise levels, particularly during unloading phases. Enjoy a quieter, more efficient workspace that bolsters productivity, courtesy of the Sanzhi Efficient Robust Two-Stage Permanent Magnet VFD Screw Compressor. Trust Sanzhi’s unparalleled engineering expertise to elevate the CHINAMFG of your industrial operations.

15) Effortless Maintenance and Unmatched Service: Step into the future of hassle-free maintenance with our revolutionary two-stage compressor unit, meticulously crafted by Sanzhi (ZheJiang ) Compressor Co., Ltd. This cutting-edge design maintains the familiar structure and systems of a single-stage compressor, with the innovation centered on the screw air end. This ingenious design ensures maintenance and service remain straightforward and user-friendly. Revel in seamless maintenance paired with consistent, high-quality performance with the Sanzhi Efficient Robust Two-Stage Permanent Magnet VFD Screw Compressor. Rely on Sanzhi for effortless maintenance and outstanding results.

Product Parameters

Our Advantages

1. Competitive Pricing

Unlock the gateway to unparalleled value with Sanzhi (ZheJiang ) Compressor Co., Ltd. When you collaborate with us, you embrace a world of factory-direct pricing excellence, offering you a formidable competitive edge within your industry. Elevate your market presence with our strategic pricing prowess, meticulously crafted to boost your profitability and solidify your market position.

2. Direct Transactions
Transform your purchasing experience through our cost-effective and seamless direct transaction model. Our efficient logistics pipeline delivers products straight from our factory to you, ensuring substantial savings and a consistently reliable supply chain that precisely meets your needs with unparalleled efficiency.

3. OEM & ODM Services
Capitalize on our advanced production and management capabilities to access superior OEM and ODM services. Each offering is tailored to align seamlessly with your unique needs, ensuring that all custom requirements are meticulously executed with precision and excellence.

4. Customized Solutions
Excel in handling non-standard and export orders with our tailor-made solutions. We expertly address a diverse range of voltage, power, and pressure specifications, crafting responses to meet your specific needs. Share your distinct requirements, and we’ll develop solutions that align with your precise expectations flawlessly.

5. Small Order Acceptance
Embark on your journey with us through a small trial order and experience the exceptional quality of our products first-hand. Ensure your complete satisfaction before scaling to larger orders, providing you with the ultimate peace of mind and steadfast confidence in your decision.

6. Rapid Delivery
Experience the peace of mind that comes with our swift and reliable delivery services. We prioritize ensuring the rapid arrival of our premium products, guaranteeing your operations remain seamless and function at CHINAMFG efficiency.

7. Comprehensive Authorization
Amplify your distribution capabilities with our comprehensive authorization certifications. Market and distribute SANZHI brand products with full confidence, supported by our extensive and rigorous certification process that empowers your success and drives your business growth.

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Company Profile

Sanzhi (ZheJiang ) Compressor Co., Ltd stands as a distinguished leader in the innovative world of screw air compressors and vacuum pumps. With an illustrious track record spHangZhou over a decade, we are proud to introduce a cutting-edge selection of products. Our comprehensive portfolio includes standard and low-pressure screw air compressors, as well as the revolutionary permanent magnet frequency conversion screw air compressors and advanced two-stage compression screw air compressors. Catering to specialized requirements, our laser cutting screw air compressors deliver precision and reliability. We also offer adaptable single-tank and double-tank mobile screw air compressors. Our electric and diesel mobile screw air compressors are engineered for top-tier performance. Additionally, our cutting-edge screw vacuum pumps are meticulously designed to meet the most rigorous industrial standards.

At Sanzhi, our state-of-the-art production facility is equipped with cutting-edge multi-air compressor assembly lines, ensuring each unit is crafted with unparalleled efficiency and precision. Our dedicated team of over 50 highly skilled experts is committed to elevating our management systems, including the integration of ERP solutions, reducing lead times significantly. This dedication ensures rapid delivery of our premium products. Our relentless pursuit of innovation propels us to the pinnacle of the industry, setting new benchmarks of CHINAMFG that distinguish us from competitors.

Our meticulously crafted management systems are designed to uphold the highest quality standards. Accredited with the esteemed ISO9001 quality management system certification, we maintain rigorous quality control procedures. Each machine undergoes comprehensive inspections throughout various stages, from material selection to production checks and pre-delivery evaluations, ensuring unmatched product reliability and excellence. Our unwavering commitment to quality offers you absolute confidence in superior performance.

Discover our exceptional customer service, beginning with our pre-sales team providing expert guidance to select the ideal air equipment for diverse facilities. We offer extensive customization options, including design and configuration changes, delivering bespoke solutions to meet specific dealer needs through our OEM services. Our professional sales and support team is always available to provide swift and effective post-sales assistance, guaranteeing that your requirements are met promptly and accurately. Experience unrivaled customer care with Sanzhi.

At Sanzhi (ZheJiang ) Compressor Co., Ltd, we are dedicated to delivering products that epitomize superiority, reliability, and stability. Committed to fostering lasting partnerships with our clients, we ensure timely delivery, world-class machinery, and competitive pricing. Our mission is to offer the ideal compressed air solution tailored to your needs, delivering unparalleled value, performance, and satisfaction.

Nestled in the scenic beauty of HangZhou City, ZheJiang Province, China, our factory boasts a prime location just 30 kilometers from HangZhou International Airport, ensuring seamless accessibility within about an hour’s drive. We warmly welcome you to visit our facility and witness our exceptional offerings firsthand! Come and explore the unique Sanzhi experience in person.

FAQ
Q1. Are you a trading company or manufacturer?
A: We are a prominent manufacturer specializing in screw air compressors, with over a decade of profound industry expertise. Our extensive experience distinctly sets us apart in the market, highlighting our exceptional capabilities.

Q2. How do you control quality?
A: 1. We conduct comprehensive inspections of our raw materials to ensure superior quality before production begins.
2. Our installation process is meticulously monitored at every phase to ensure precision and accuracy.
3. Each machine undergoes a minimum of 5 continuous hours of rigorous testing prior to dispatch, guaranteeing CHINAMFG performance and reliability.

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 craft a flawlessly tailored solution uniquely for you! Our expertise guarantees that we meet your exact needs with precision and excellence.

Q4. What is the general unit conversion?
1Bar = 0.1Mpa = 14.5PSI
1m³/min = 35.32 cfm. This precise conversion highlights the extraordinary capacity of our compressors, enabling them to meet the vast needs of industrial usage with unmatched performance and supreme efficiency.
1KW = 1.34 HP. This power conversion underlines the outstanding capability of our compressors, delivering substantial output to ensure stable and trustworthy operation, even in the most challenging environments.

Q5. What is the available voltage air compressor?
A: Sanzhi (ZheJiang ) Compressor Co., Ltd. provides an extensive array of voltage options, expertly accommodating global standards. Select from 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p. Our commitment is to deliver highly customized solutions that fulfill your specific electrical requirements, ensuring superior compatibility and premium performance.

Q6. How long is the delivery time?
A: For standard voltage units, our efficient processes ensure shipment within an impressive 15 working days post order confirmation. For non-standard voltage needs, contact our devoted sales team for a detailed delivery schedule tailored precisely to your specifications.

Q7. What’s the payment term?
A: Our payment terms are designed for your convenience: 30% T/T in advance, 40% T/T before shipment, and the remaining 30% T/T CHINAMFG receiving the B/L copy. We accept payments in both USD and RMB, offering flexibility and ease for smooth transactions.

Q8. How about your warranty?
A: Sanzhi offers a comprehensive warranty that delivers peace of mind: 1 year for the entire machine and 2 years for the screw air compressor, with consumable spare parts excluded. This commitment emphasizes our dedication to quality and durability.

Q9. What about the maintenance?
A: Initial maintenance is vital and should be performed after 500 operating hours. Subsequent maintenance is recommended between 2000-3000 hour intervals, adjusted to your specific working environment, ensuring optimal performance and longevity.

Q10. Can machines be run in high-temperature environment?
A: Absolutely! Our machines are engineered to deliver exceptional performance even in extreme temperatures. They reliably maintain efficient operation across a wide range of -20° to 45° (-4ºF to 113ºF), guaranteeing durability and dependability under the harshest conditions.

Q11. Do you offer OEM service?
A: Yes, we excel in providing both OEM and ODM services. Our expert design team is proficient in bringing your custom orders to life, crafting tailor-made solutions that perfectly align with your specifications, enhancing brand identity and product differentiation.

Q12. How long could your air compressor be used?
A: Our air compressors are meticulously engineered for exceptional longevity, offering an impressive lifespan that typically exceeds 10 years of dependable and efficient service, ensuring sustained productivity and value.

Q13. Will you provide some spare parts for the machines?
A: Absolutely, we provide a comprehensive selection of superior-quality spare parts designed to ensure your machines continue to operate seamlessly and maintain CHINAMFG performance, maximizing uptime and operational efficiency over the long term.

Q14. How about your after-sales service?
A: We offer exceptional after-sales support, providing detailed online guidance for installation and commissioning. If needed, we can arrange for expert engineers to deliver hands-on training and comprehensive installation assistance, ensuring seamless integration and optimal operation.

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What are the differences between stationary and portable air compressors?

Stationary and portable air compressors are two common types of air compressors with distinct features and applications. Here are the key differences between them:

1. Mobility:

The primary difference between stationary and portable air compressors is their mobility. Stationary air compressors are designed to be permanently installed in a fixed location, such as a workshop or a factory. They are typically larger, heavier, and not easily movable. On the other hand, portable air compressors are smaller, lighter, and equipped with handles or wheels for easy transportation. They can be moved from one location to another, making them suitable for jobsites, construction sites, and other mobile applications.

2. Power Source:

Another difference lies in the power source used by stationary and portable air compressors. Stationary compressors are usually powered by electricity, as they are designed for continuous operation in a fixed location with access to power outlets. They are connected to the electrical grid or have dedicated wiring. In contrast, portable compressors are available in various power options, including electric, gasoline, and diesel engines. This versatility allows them to operate in remote areas or sites without readily available electricity.

3. Tank Capacity:

Tank capacity is also a distinguishing factor between stationary and portable air compressors. Stationary compressors often have larger storage tanks to store compressed air for extended periods. The larger tanks enable them to deliver a continuous and steady supply of compressed air for longer durations without the need for frequent cycling. Portable compressors, due to their compact size and portability, generally have smaller tank capacities, which may be sufficient for intermittent or smaller-scale applications.

4. Performance and Output:

The performance and output capabilities of stationary and portable air compressors can vary. Stationary compressors are typically designed for high-volume applications that require a consistent and continuous supply of compressed air. They often have higher horsepower ratings, larger motor sizes, and higher air delivery capacities. Portable compressors, while generally offering lower horsepower and air delivery compared to their stationary counterparts, are still capable of delivering sufficient air for a range of applications, including pneumatic tools, inflation tasks, and light-duty air-powered equipment.

5. Noise Level:

Noise level is an important consideration when comparing stationary and portable air compressors. Stationary compressors, being larger and built for industrial or commercial settings, are often equipped with noise-reducing features such as sound insulation and vibration dampening. They are designed to operate at lower noise levels, which is crucial for maintaining a comfortable working environment. Portable compressors, while efforts are made to reduce noise, may produce higher noise levels due to their compact size and portability.

6. Price and Cost:

Stationary and portable air compressors also differ in terms of price and cost. Stationary compressors are generally more expensive due to their larger size, higher power output, and industrial-grade construction. They often require professional installation and may involve additional costs such as electrical wiring and system setup. Portable compressors, being smaller and more versatile, tend to have a lower upfront cost. They are suitable for individual users, contractors, and small businesses with budget constraints or flexible air supply needs.

When selecting between stationary and portable air compressors, it is essential to consider the specific requirements of the intended application, such as mobility, power source availability, air demands, and noise considerations. Understanding these differences will help in choosing the appropriate type of air compressor for the intended use.

How do you choose the right air compressor for woodworking?

Choosing the right air compressor for woodworking is essential to ensure efficient and effective operation of pneumatic tools and equipment. Here are some factors to consider when selecting an air compressor for woodworking:

1. Required Air Volume (CFM):

Determine the required air volume or cubic feet per minute (CFM) for your woodworking tools and equipment. Different tools have varying CFM requirements, so it is crucial to choose an air compressor that can deliver the required CFM to power your tools effectively. Make sure to consider the highest CFM requirement among the tools you’ll be using simultaneously.

2. Tank Size:

Consider the tank size of the air compressor. A larger tank allows for more stored air, which can be beneficial when using tools that require short bursts of high air volume. It helps maintain a consistent air supply and reduces the frequency of the compressor cycling on and off. However, if you have tools with continuous high CFM demands, a larger tank may not be as critical.

3. Maximum Pressure (PSI):

Check the maximum pressure (PSI) rating of the air compressor. Woodworking tools typically operate within a specific PSI range, so ensure that the compressor can provide the required pressure. It is advisable to choose an air compressor with a higher maximum PSI rating to accommodate any future tool upgrades or changes in your woodworking needs.

4. Noise Level:

Consider the noise level of the air compressor, especially if you’ll be using it in a residential or shared workspace. Some air compressors have noise-reducing features or are designed to operate quietly, making them more suitable for woodworking environments where noise control is important.

5. Portability:

Assess the portability requirements of your woodworking projects. If you need to move the air compressor frequently or work in different locations, a portable and lightweight compressor may be preferable. However, if the compressor will remain stationary in a workshop, a larger, stationary model might be more suitable.

6. Power Source:

Determine the power source available in your woodworking workspace. Air compressors can be powered by electricity or gasoline engines. If electricity is readily available, an electric compressor may be more convenient and cost-effective. Gasoline-powered compressors offer greater flexibility for remote or outdoor woodworking projects where electricity may not be accessible.

7. Quality and Reliability:

Choose an air compressor from a reputable manufacturer known for producing reliable and high-quality equipment. Read customer reviews and consider the warranty and after-sales support offered by the manufacturer to ensure long-term satisfaction and reliability.

8. Budget:

Consider your budget and balance it with the features and specifications required for your woodworking needs. While it’s important to invest in a reliable and suitable air compressor, there are options available at various price points to accommodate different budgets.

By considering these factors and evaluating your specific woodworking requirements, you can choose an air compressor that meets the demands of your tools, provides efficient performance, and enhances your woodworking experience.

How is air pressure measured in air compressors?

Air pressure in air compressors is typically measured using one of two common units: pounds per square inch (PSI) or bar. Here’s a brief explanation of how air pressure is measured in air compressors:

1. Pounds per Square Inch (PSI): PSI is the most widely used unit of pressure measurement in air compressors, especially in North America. It represents the force exerted by one pound of force over an area of one square inch. Air pressure gauges on air compressors often display pressure readings in PSI, allowing users to monitor and adjust the pressure accordingly.

2. Bar: Bar is another unit of pressure commonly used in air compressors, particularly in Europe and many other parts of the world. It is a metric unit of pressure equal to 100,000 pascals (Pa). Air compressors may have pressure gauges that display readings in bar, providing an alternative measurement option for users in those regions.

To measure air pressure in an air compressor, a pressure gauge is typically installed on the compressor’s outlet or receiver tank. The gauge is designed to measure the force exerted by the compressed air and display the reading in the specified unit, such as PSI or bar.

It’s important to note that the air pressure indicated on the gauge represents the pressure at a specific point in the air compressor system, typically at the outlet or tank. The actual pressure experienced at the point of use may vary due to factors such as pressure drop in the air lines or restrictions caused by fittings and tools.

When using an air compressor, it is essential to set the pressure to the appropriate level required for the specific application. Different tools and equipment have different pressure requirements, and exceeding the recommended pressure can lead to damage or unsafe operation. Most air compressors allow users to adjust the pressure output using a pressure regulator or similar control mechanism.

Regular monitoring of the air pressure in an air compressor is crucial to ensure optimal performance, efficiency, and safe operation. By understanding the units of measurement and using pressure gauges appropriately, users can maintain the desired air pressure levels in their air compressor systems.

editor by lmc 2025-02-24