China Factory Sanzhi 75HP Permanent Magnet Two-Stage VFD/VSD Screw Air Compressor for Industrial 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: The front view of our compressor unveils an exquisite array of precision-engineered components, meticulously arranged to deliver unparalleled performance. This perspective showcases the sleek design and pioneering configurations that drive the compressor's exceptional efficiency, setting new standards in air compression technology.

Internal Structure Backside: From the rear, one can appreciate a seamless fusion of robust components, deftly engineered for lasting reliability and streamlined maintenance. This perspective highlights the strategic layout and integrated systems, reinforcing the compressor's exceptional functionality and durability, ensuring impeccable operation over time.


Working Principle: Dive into the sophisticated engineering of the Sanzhi compressor, where cutting-edge principles coalesce to create a seamless and efficient compression process. This refined combination of technology and innovation ensures each operational phase is executed with precision, optimizing performance and maximizing efficiency.

In the world of air compression technology, finding the perfect harmony where single-stage transmission power matches multi-stage compression might seems daunting. Real-world influences such as coupling power loss, bearing friction, and rising liquid viscosity with cooling intensify power usage. Solutions lie in strategically reducing the compression ratio at every stage. This method ensures that the energy needed for multi-stage compression remains lower than that of a single-stage system, thereby enhancing performance and curbing energy waste.

Introducing a cutting-edge two-stage screw air compressor with pioneering dual rotary screw systems, each equipped with active and passive screws. The active screw, driven by external transmission, propels the passive screw, forging a dynamic synergy. The process begins with a low-pressure rate screw group, evolving to a high-pressure rate setup in the subsequent stage. Each screw is enveloped by a sealing air film, boosting the rotational process and fostering efficient gas compression through a flawless cycle of suction, pressurization, and exhaust, ensuring peak efficiency and remarkable performance.

First stage compression: In this crucial initial phase, the two-stage screw air compressor utilizes a low-pressure rate screw group to compress the gas. As gas enters the screw compression chamber through the suction valve, the rapid rotation of the high-speed screw rotor compresses and propels the gas towards the second stage, establishing a robust foundation for efficient compression.

Second stage compression: In the second stage, the gas encounters a more restricted screw space, leading to increased temperature and pressure. As compression reaches its peak, the exhaust valve activates, adeptly releasing high-pressure gas while ensuring the system maintains optimal efficiency.

The process commences with natural air, filtered and inducted into the first compression stage, where it mingles with a trace of lubricating oil within the compression chamber. This mixture is compressed to interstage pressure and progresses through a cooling channel, engaging with a rich oil mist, significantly lowering its temperature. The cooled, compressed gas advances to the second-stage rotor for additional compression, achieving the final exhaust pressure. Completing its expertly managed journey, the gas exits through the exhaust valve, marking the conclusion of a meticulously orchestrated compression process.

 

Detailed Photos

 

 

 

1) Unrivaled Efficiency of the PM Motor: Elevate your industrial prowess with our state-of-the-art permanent magnet motor, setting an unprecedented standard in energy efficiency. Witness a transformative 20-30% improvement over traditional motor designs! With an expansive constant torque and an impressive weak magnetic range, this motor operates with unparalleled efficiency across a spectrum of frequencies, embodying elite energy performance and redefining limitations.

2) Effortless Motor Maintenance: Welcome to the future of motor upkeep with our groundbreaking permanent magnet motor design. By eradicating internal bearings, it drastically lowers maintenance expenses, virtually eliminating the common challenges of motor bearing care and replacement. Enjoy seamless, uninterrupted operations with this revolutionary upgrade.

3) Effortlessly Integrated Frequency Converter: Harness the extraordinary capability of China's leading frequency system! With an extensive speed regulation range and precise control, it synchronizes flawlessly with your specific gas requirements, optimizing frequency modulation. This ensures the compressor's exceptional energy-saving potential is fully realized, standing as a beacon of energy efficiency.

4) Perfect Transmission Efficiency: Achieve superior transmission efficiency with our integrated shaft structure. The direct coupling of the permanent magnet motor and compressor ensures a compact design with a flawless 100% transmission efficiency. Eliminate traditional couplings and extraneous parts with this sleek, performance-enhancing design.

5) Optimized Variable Frequency and Soft Start: Protect your power grid with our advanced variable frequency and soft start technology. It greatly reduces the stress on electrical systems, safeguarding them against potential damage while maintaining smooth and dependable operation.

6) Superior Energy Efficiency: Embark on a path to exceptional energy efficiency! Our system's frequency conversion range extends from 25% to 100%, surpassing the usual 50% to 100% spectrum. It delivers over 30% energy savings compared to fixed-speed compressors, with additional savings of roughly 5% beyond standard variable frequency models. Greater fluctuations in gas utilization lead to even more substantial savings.

7) Groundbreaking Two-Stage Compression Air End: Explore the forefront of two-stage compression with our ingeniously crafted screw machine. By incorporating both first and second-stage rotors within a single casing, each rotor is gear-driven to sustain optimal linear speed, achieving peak compression efficiency and pushing performance boundaries.

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

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

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

11) Streamlined Maintenance and Service: Simplify maintenance and service with our two-stage compressor unit. Maintaining the same system structures as single-stage compression, apart from the screw air end, it ensures maintenance tasks and user operations are smooth and efficient, keeping your workflow uninterrupted.

 

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 empower our esteemed customers with the exceptional benefit of direct ex-factory pricing. This enables them to surpass their competitors and secure a dominant market position with remarkable ease.

2. Direct Deal
Our extensive product lineup is directly accessible from the factory, ensuring you receive solutions that are not only cost-effective but also rich in value and quality.

3. OEM & ODM Services
Harness the exceptional production and management expertise of our factory to access tailored OEM and ODM services. These services are meticulously crafted to align with your unique specifications and needs.

4. Customized Service
We welcome non-standard and export orders with versatile voltage, power, and pressure configurations. Each order is finely customized to suit your precise requirements. Contact us to explore our tailored solutions for your specific needs.

5. Accept Small Orders
Evaluate the outstanding quality of our products with a small trial order, specifically designed to meet your initial assessment needs with precision.

6. Fast Delivery
Enjoy the peace of mind that comes with our steadfast commitment to delivering high-quality products promptly, ensuring swift and reliable service with every order.

7. Complete Authorization
We equip our respected distributors with comprehensive authorization certificates. This empowers you with the assurance to proudly promote and distribute our prestigious SANZHI brand products confidently.

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Packaging & Shipping

Company Profile

 

Sanzhi (Henan) Compressor Co., Ltd stands tall as a beacon of excellence in the compressor industry. With over a decade of unparalleled expertise, we create premium screw air compressors and vacuum pumps. Our extensive and diverse portfolio offers an abundance of choices, including 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 and robust diesel mobile options. Experience innovation with our pioneering screw vacuum pumps and other groundbreaking solutions.

Our cutting-edge production facilities exemplify modern innovation and efficiency, boasting sophisticated multi-air compressor assembly lines designed for peak performance. 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. This ensures 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. This highlights 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. This guarantees 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 fuels 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 invite you to visit us, offering complimentary transfers from the airport to our facility. This ensures 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.