China Factory High-Efficiency Sanzhi 75HP Two-Stage Permanent Magnet VFD/VSD Screw Air Compressor for Industry Use

• Customization: Available
• After-sales Service: Online Technology Support
• Warranty: 1 Year for The Whole Machine & 2 Years for Airend
• Model NO.: SZ55VF-II
• Lubrication Style: Lubricated
• Cooling System: Air Cooling
• Power Source: AC Power
• Cylinder Position: Vertical
• Structure Type: Closed Type
• Installation Type: Stationary Type
• Type: Twin-Screw Compressor
• Brand Name: Sanzhi
• Power: 55kw
• Exhaust Pressure: 0.5-1.6 MPa
• Weight: 2280kg
• Condition: New
• Transport Package: Standard Wooden Package
• Specification: 2150*1300*1730mm
• Trademark: SZ
• Origin: Zhengzhou
• HS Code: 8414804990
• Production Capacity: 500PCS/Month
• Package Size: 220.00cm * 135.00cm * 183.00cm
• Package Gross Weight: 2280.000kg

Product Description

Product Structure

 

Internal Structure Frontside: Behold the front view of our compressor, an exquisite showcase of precision-engineered components meticulously arranged to deliver an unmatched performance. This perspective highlights the sleek design and pioneering configurations, which propel this compressor to extraordinary levels of efficiency, setting unparalleled standards in the realm of air compression technology.

Internal Structure Backside: The rear view presents a seamless fusion of robust components, engineered for enduring reliability and simplified maintenance. This vantage point accentuates the strategic layout and integrated systems that reinforce the compressor's exceptional functionality and durability, ensuring flawless operation over extended periods.


Working Principle: Delve into the intricate engineering of the Sanzhi compressor, where cutting-edge principles converge to facilitate a smooth, highly efficient compression process. This sophisticated synergy of technology and innovation ensures that every operational phase is executed with absolute precision, optimizing overall performance and maximizing energy efficiency.

In the advanced sphere of air compression technology, achieving a perfect balance where single-stage transmission power aligns with multi-stage compression power presents a formidable challenge. Real-world influences such as coupling power loss, bearing friction, and escalated liquid viscosity during cooling exacerbate power consumption. To counteract these effects, strategically reducing the compression ratio at each stage emerges as a superior solution. This method guarantees that the energy demand for multi-stage compression remains lower than that of a single-stage system, thereby enhancing performance and minimizing energy waste.

Presenting an advanced two-stage screw air compressor, featuring dual rotary screw compressors with both active and passive screws. The active screw, energized by external transmission, animates the passive screw, creating a vibrant synergy. The process initiates with a low-pressure rate screw group, progressing to a high-pressure rate stage. Each screw is encased in a sealing air film that enhances the rotation, facilitating efficient gas compression through a flawless cycle of suction, pressurization, and exhaust, thereby guaranteeing maximum efficiency and remarkable performance.

First stage compression: In this crucial initial phase, the two-stage screw air compressor uses a low-pressure rate screw group to commence gas compression. As gas is drawn into the screw compression chamber via the suction valve, the rapid rotation of the high-speed screw rotor compresses and propels the gas towards the second stage, laying a robust foundation for efficient compression.

Second stage compression: Within the second stage, the gas enters a more constrained screw space, encountering elevated temperature and pressure levels. As compression culminates, the exhaust valve activates, deftly releasing high-pressure gas while maintaining optimal system efficiency.

The process begins with natural air, filtered and drawn into the first compression stage, where it mingles with a trace of lubricating oil. This blend compresses to an intermediate pressure before passing through a cooling channel rich in oil mist, significantly reducing its temperature. The cooled, compressed gas moves to the second-stage rotor for further compression, reaching final exhaust pressure. Completing its expertly orchestrated journey, the gas exits through the exhaust valve, culminating a meticulously managed compression process.

 

Detailed Photos

 

 

 

1) Unrivaled Efficiency of the PM Motor: Elevate your operations with the High-Efficiency Sanzhi 75HP Two-Stage VFD/VSD Screw Air Compressor's permanent magnet motor, setting a new standard in energy efficiency. Witness a remarkable 20-30% improvement over conventional motors. With an expansive constant torque and an impressive weak magnetic range, it performs exceptionally both within and beyond rated frequencies. This motor embodies superior energy performance, redefining the boundaries of what's possible.

2) Effortless Motor Maintenance: Step into the future of maintenance with our innovative permanent magnet motor design. By eliminating internal bearings, it dramatically lowers maintenance costs and virtually eradicates the common burdens of motor bearing upkeep and replacement. Revel in smooth, uninterrupted operations with this groundbreaking advancement.

3) Effortlessly Integrated Frequency Converter: Unleash the potential of China's premier frequency system! It offers an extensive speed regulation range with precise control, perfectly synchronized with your actual gas requirements for optimal frequency modulation. This ensures the air compressor's extraordinary energy-saving capabilities are fully realized, positioning it as an icon of energy efficiency.

4) Perfect Transmission Efficiency: Achieve unrivaled transmission efficiency with our integrated shaft structure. By directly coupling the permanent magnet motor and compressor, it features a compact design with 100% transmission efficiency. Bid farewell to traditional couplings and extra components, as this sleek design streamlines performance to perfection.

5) Optimized Variable Frequency and Soft Start: Protect your power grid with our refined variable frequency and soft start technology. It significantly mitigates the impact on electrical systems, safeguarding them from potential harm while ensuring seamless and reliable operation.

6) Superior Energy Efficiency: Embark on a journey towards superior energy efficiency! Our system offers a frequency conversion range from 25% to 100%, far outmatching the typical 50% to 100% range. It achieves over 30% energy savings compared to fixed-speed compressors, with additional savings of about 5% over standard variable frequency models. Greater fluctuations in gas consumption translate to even more impressive savings.

7) Groundbreaking Two-Stage Compression Air End: Discover the cutting-edge of two-stage compression with our ingeniously designed screw machine. By integrating first and second-stage rotors within a single casing, each rotor is gear-driven to maintain optimal linear speed, achieving peak compression efficiency and pushing the limits of performance.

8) Cutting-Edge Internal Spray Curtain Cooling: Our revolutionary internal spray curtain cooling technology is unparalleled in energy efficiency. It provides exceptional cooling, significantly reducing compressed air temperatures. Achieving near-isothermal compression, it minimizes pressure loss and compression ratio, dramatically enhancing overall efficiency.

9) Reduced Internal Leakage: Maximize volume efficiency with our two-stage compression system, which deftly reduces the compression ratio per stage. This smart design minimizes internal leakage from high to low-pressure zones, ensuring optimal performance and reliability.

10) Outstanding Noise Reduction: Experience a quieter work environment with our two-stage compression process, engineered to lower the compression ratio. Enjoy significantly reduced noise levels, particularly during unloading phases, without compromising power or efficiency.

11) Streamlined Maintenance and Service: Simplify maintenance and service with our two-stage compressor unit. Retaining the same system structures as single-stage compression, aside from the screw air end, it makes maintenance tasks and user operations effortless, ensuring your workflow remains seamless and efficient.

 

Product Parameters

 

Sanzhi (Henan) Compressor Co,. Ltd.
Two-Stage Compression Permanent Magnet Variable Frequency Screw Air Compressor
Model	Power	Exhaust pressure	Free air delivery* of unit at working pressure	Voltage	Frequency	Air outlet discharge size	Weight	Dimensions
	KW	Mpa	m³/min	V	Hz	Inch	Kg	L*W*H(mm)
SZ15VF-II	15	0.5	4.00	380	50	G1½	660	1450*780*1180
		0.8	3.00
		1.3	2.00
SZ19VF-II	18.5	0.5	5.00	380	50	G1½	680	1450*780*1180
		0.8	4.00
		1.3	3.80
		1.6	2.20
SZ22VF-II	22	0.5	6.60	380	50	G1½	730	1650*880*1280
		0.8	4.20
		1.3	3.00
		1.6	2.50
SZ30VF-II	30	0.5	7.00	380	50	G1½	980	2000*1260*1560
		0.8	6.40
		1.3	4.00
		1.6	3.00
SZ37VF-II	37	0.5	10.00	380	50	G1½	1080	2000*1260*1560
		0.8	7.00
		1.3	5.50
		1.6	4.00
SZ45VF-II	45	0.5	13.00	380	50	G2	1980	2000*1260*1560
		0.8	10.00
		1.3	6.50
		1.6	5.00
SZ55VF-II	55	0.5	17.00	380	50	G2	2180	2150*1300*1730
		0.8	12.00
		1.3	8.60
		1.6	5.00
SZ75VF-II	75	0.5	20.00	380	50	G2	2280	2150*1300*1730
		0.8	16.50
		1.3	11.00
		1.6	9.00
SZ90VF-II	90	0.5	24.00	380	50	DN65	3200	2700*1920*1820
		0.8	20.00
		1.3	14.00
		1.6	11.00
SZ110VF-II	110	0.5	28.00	380	50	DN65	3360	2700*1920*1820
		0.8	24.50
		1.3	18.00
		1.6	14.00
Due to product updates, the above parameters are subject to deviation in kind.

Our Advantages

 

1. Price Advantage

We offer our esteemed clientele the remarkable benefit of direct ex-factory pricing, empowering them to dominate the competition by leveraging a significant market edge.

2. Direct Deal
Our extensive product line is available straight from the factory, granting you entry to highly economical and value-rich solutions.

3. OEM & ODM Services
Capitalize on our factory's exceptional production capabilities and management expertise to obtain tailor-made OEM and ODM services, meticulously designed to fulfill your distinct specifications.

4. Customized Service
We welcome non-standard and export orders with flexible voltage, power, and pressure specifications, ensuring every order is beautifully customized to meet your precise demands. Contact us to learn how we can cater to your specific requirements.

5. Accept Small Orders
Discover the exceptional quality of our products with a small trial order, expertly crafted to suit your initial assessment needs.

6. Fast Delivery
Take comfort in our steadfast commitment to delivering high-quality products swiftly, ensuring timely fulfillment with each order.

7. Complete Authorization
We provide our respected distributors with comprehensive authorization certificates, empowering you to market and distribute our prestigious SANZHI brand products with pride and confidence.

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Packaging & Shipping

Company Profile

 

Sanzhi (Henan) Compressor Co., Ltd stands tall as a beacon of excellence in the compressor industry, distinguished by over a decade of unparalleled expertise in creating premium screw air compressors and vacuum pumps. Our extensive and diverse portfolio offers an abundance of choices, encompassing both standard and low-pressure screw air compressors. Embrace the future with our cutting-edge permanent magnet frequency conversion screw air compressors and our advanced two-stage compression models. For specialized requirements, discover our screw air compressors designed for laser cutting, alongside versatile single and double-tank mobile screw air compressors. Elevate your operations with our high-efficiency electric mobile screw air compressors, robust diesel mobile options, and pioneering screw vacuum pumps, among other innovative solutions.

Our cutting-edge production facilities exemplify modern innovation, boasting sophisticated multi-air compressor assembly lines crafted for peak efficiency. These facilities represent the zenith of lean manufacturing and modern production techniques. Our committed team of over 50 skilled experts continually refines our management systems, including ERP, to substantially reduce lead times, ensuring our esteemed clients receive premium products swiftly and dependably.

Our steadfast dedication to excellence in quality management is epitomized by our factory's esteemed ISO9001 certification, highlighting our strict adherence to rigorous quality management protocols. Each machine embarks on a comprehensive quality journey, characterized by meticulous material inspections, thorough production evaluations, and stringent pre-delivery inspections, guaranteeing that only the finest machines depart from our doors.

In the domain of customer service, we excel by delivering expert pre-sales guidance, assisting clients in selecting the ideal air equipment tailored to their specific requirements. We offer extensive customization options in both aesthetics and configuration. Our unmatched capability to provide bespoke products that meet dealers' unique demands, including OEM solutions, distinguishes us in the market. Furthermore, our dedicated sales and service teams deliver rapid and proficient after-sales support, ensuring complete customer satisfaction.

At Sanzhi (Henan) Compressor Co., Ltd, our fervent commitment to producing products that epitomize exceptional quality and unwavering reliability nurtures enduring relationships with our treasured clients. Our dedication to prompt delivery, superior product quality, and competitive pricing establishes us as the trusted partner of choice for all your compressed air solution needs.

Situated in the vibrant city of Xinzheng, Henan Province, China, our factory is strategically located just 30 kilometers from Xinzheng International Airport. We warmly welcome you to visit us, offering complimentary transfers from the airport to our facility, ensuring your experience is seamless and graciously hospitable. Welcome to Sanzhi (Henan) Compressor Co., Ltd!

FAQ

 

Q1. Are you a trading company or manufacturer?
A: We are a professional manufacturer of screw air compressors, with more than 10 years of experience.

Q2. How do you control quality?
A: 1. The raw materials are strictly inspected.
2. Installation procedures are strictly controlled.
3. Each machine must pass at least 5 hours of continuous testing before leaving the factory.

Q3. What information must I provide to get the suitable machine?
1. How much air delivery capacity (Unit: CFM or m³/Min)
2. How much working pressure (Unit: PSI, Bar or Mpa)
3. What is the voltage and frequency of my country of residence (V/Hz)
4. Whether I need other accessories such as an air tank, filters, and/or air dryers.
Tell us the answer, we will offer a scheme 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 available voltage include 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, 440v/60hz/3p, and can be customized according to your requirements.

Q6. How long is the delivery time?
A: For standard voltage,15 working days after the confirmed order. Non-standard, please contact our sales.

Q7. What's the payment term?
A: 30% T/T in advance, 40% T/T before shipment, and 30% T/T against the B/L copy. USD, RMB can be accepted.

Q8. How about your warranty?
A: One year for the whole machine and two years for screw air compressor, except for consumable spare parts.

Q9. What about the maintenance?
A: First maintenance needs to be done after 500 hours, and then every 2000-3000 hours to do the normal maintenance, and consider the actual environment.

Q10. Can machines be run in high-temperature environment?
A: Yes, machines would run in high-temperature environment countries. Working temperature from -20° to 45°(-4ºF-113ºF).

Q11. Do you offer OEM service?
A: Yes, with a professional design team, both OEM & ODM orders are highly welcome.

Q12. How long could your air compressor be used?
A: Generally, more than 10 years.

Q13. Will you provide some spare parts for the machines?
A: Yes, of course.

Q14. How about your after-sales service?
A: Provide customers with installation and commissioning online instructions, and arrange for our engineers to help you with training and installation.