China Sanzhi Hot Sale 55kw Permanent Magnet VFD Variable-Frequency Drive Screw Air Compressor - 1.6MPa for Food Factory, Battery Industry

• Customization: Available
• After-sales Service: Online Technology Support
• Warranty: 1 Year for The Whole Machine & 2 Years for Airend
• Model NO.: SZ55VF-II
• 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

Internal Structure Backside


Working Principle

In the sophisticated realm of air compression technology, one envisions the ideal scenario where the power needed for single-stage pressure transmission matches the cumulative power required for multi-stage compression. However, real-world applications introduce complexities such as coupling power losses, friction within bearings, and the cooling effects induced by liquid viscosity, all of which elevate the actual working power required. To combat these inefficiencies and enhance performance, reducing the compression ratio at each stage emerges as a strategic, intelligent solution. By implementing this approach, the aggregate power needed for multi-stage compression can be kept below that of a single-stage system, effectively optimizing performance and significantly reducing energy wastage.

The revolutionary two-stage screw air compressor proudly showcases a sophisticated design, incorporating dual rotary screw compressors, each armed with both an active and a passive screw. The active screw, energizing the passive screw with precision, is driven by an external power transmission device. At the core of this advanced system, the first stage utilizes a low-pressure rate screw group, while the second stage engages with a high-pressure rate variant. Each screw is enveloped by a meticulously engineered sealing air film, optimizing the rotational process. This allows gas compression to occur seamlessly through a cycle of suction, pressurization, and exhaust, ensuring unparalleled efficiency and enhanced performance.

First stage compression: In this crucial initial phase, the two-stage screw air compressor employs a low-pressure rate screw group skillfully to compress the gas. As the gas is drawn into the screw compression chamber through the suction valve, the high-speed rotation of the screw rotor gradually compresses and channels it forward to the second stage, establishing the groundwork for exceptional compression efficiency.

Second stage compression: As the process advances to the second stage, the gas enters a more constricted screw space, where it is subjected to increased temperature and pressure. Once the compression reaches its peak efficiency, the exhaust valve activates, smoothly expelling the high-pressure gas while maintaining superior system efficiency.

Natural air, after being meticulously purified through an air filter, embarks on its journey into the initial compression stage, where it blends with a trace of lubricating oil within the compression chamber. Here, the mixture undergoes compression to an interstage pressure. The resultant compressed gas then travels through the cooling channel, interacting with abundant oil mist to dramatically lower its temperature. This cooled, compressed gas progresses to the second-stage rotor, where it undergoes a second round of compression, reaching its final exhaust pressure. Culminating its precise journey, the gas exits the compressor via the exhaust valve, completing a flawlessly executed and efficient compression process.

 

Detailed Photos

 

 

 

1) Superior Efficiency of the PM Motor: Leveraging a wider constant torque and extended weak magnetic range, the cutting-edge permanent magnet motor significantly outperforms traditional motors, boasting a remarkable 20-30% enhancement in efficiency. Whether operating within or beyond the rated frequency, this motor consistently delivers a phenomenally high-efficiency performance.

2) Maintenance-Free Motor Operation: Ingeniously crafted, the permanent magnet motor's design eliminates the need for internal bearings, dramatically cutting down maintenance expenses typically associated with motor bearing replacement and upkeep.

3) Seamless Integrated Frequency Converter: Equipped with China's premier frequency system, the converter offers an extensive speed regulation range and precise control capabilities. This ensures the compressor optimally aligns with real-time gas demands, efficiently modulating frequency, thereby unveiling extraordinary energy-saving potentials.

4) Absolute Transmission Efficiency: Boasting an integrated shaft structure, the permanent magnet motor and compressor create a direct connection. This results in a compact, streamlined design that achieves unparalleled 100% transmission efficiency, eliminating the need for couplings or other transmission components.

5) Variable Frequency and Soft Start Optimization Ingeniously optimizing power usage, this feature substantially minimizes grid equipment impact, providing robust protection for electrical systems against potential disruptions.

6) Enhanced Energy Efficiency: With an expansive frequency conversion range from 25% to 100%-a notable improvement over the typical 50% to 100% range-this system achieves an impressive 30% energy savings compared to standard fixed-speed compressors. Even when compared to conventional variable frequency models, it offers an additional 5% savings. Fluctuations in gas consumption only amplify these savings.

7) Revolutionary Two-Stage Compression Air End: Ingeniously designed, the two-stage compression screw machine integrates the first and second-stage rotors into a singular casing, with each rotor driven directly by precision gears. This design achieves optimal linear speed and unrivaled compression efficiency.

8) Innovative Internal Spray Curtain Cooling: Renowned for its energy efficiency, this pioneering cooling method provides an exceptional cooling effect. It dramatically lowers the temperature of compressed air, achieving near-isothermal compression, reducing pressure loss and compression ratio, thereby enhancing overall efficiency.

9) Minimized Internal Leakage: The advanced two-stage compression mechanism lowers the compression ratio per stage, effectively minimizing internal leakage from high to low pressure ends, which in turn significantly enhances volume efficiency.

10) Remarkable Noise Reduction: The innovative two-stage compression method remarkably decreases the compression ratio, leading to a substantial reduction in noise levels, especially noticeable during the unloading phases.

11) Simplified Maintenance and Service: Maintaining system structures identical to single-stage compression, with the exception of the screw air end, the two-stage compressor unit simplifies maintenance procedures and streamlines user operation for greater ease and convenience.

 

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 provide our esteemed customers with direct access to ex-factory pricing, ensuring you gain a significant competitive edge in the bustling market landscape.

2. Direct Deal
Explore our entire product range available straight from the factory, offering you highly cost-effective and value-optimized solutions, every time.

3. OEM & ODM Services
Leverage our factory's superior production and management prowess, which empowers us to deliver bespoke OEM and ODM services tailored perfectly to your distinct demands.

4. Customized Service
We welcome non-standard and export orders, offering flexibility in voltage, power, and pressure specifications, custom-tailored to your precise requirements. Contact us to discuss your needs.

5. Accept Small Orders
Evaluate the outstanding quality of our products by placing a small trial order, ideal for your initial assessment and satisfaction.

6. Fast Delivery
Rest assured with our commitment to delivering high-quality products, always on time, ensuring a seamless fulfillment experience.

7. Complete Authorization
For our valued distributors, we offer thorough authorization certificates, empowering you to confidently market and distribute our prestigious SANZHI brand products with pride.

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Packaging & Shipping

Company Profile

 

Sanzhi (Henan) Compressor Co., Ltd, a venerated leader in the manufacturing industry, proudly boasts over ten years of unwavering dedication to crafting high-quality screw air compressors and vacuum pumps. Our extensive product portfolio is a testament to our innovation and versatility, featuring an impressive range of options. From standard and low-pressure screw air compressors to the revolutionary permanent magnet frequency conversion models, we offer cutting-edge solutions. Our advanced two-stage compression screw air compressors cater to specialized needs, while our laser-cutting-oriented screw air compressors, single-tank, and double-tank mobile variants, as well as our efficient electric and robust diesel mobile screw air compressors, ensure unparalleled performance. Additionally, our screw vacuum pumps exemplify efficiency and reliability, catering to diverse industrial requirements.

Our production facilities stand at the forefront of modern manufacturing, equipped with sophisticated multi-air compressor assembly lines engineered for peak efficiency. These facilities embody the essence of lean manufacturing, enabling us to produce superior products with precision. Supported by a dedicated team of over 50 highly skilled employees, we continually enhance our management systems, such as ERP, to streamline operations, reduce lead times, and guarantee that our esteemed customers receive top-tier products with remarkable speed and reliability.

Our steadfast commitment to excellence in quality management is exemplified by our ISO9001 certification. We rigorously adhere to comprehensive quality management protocols, ensuring that each product undergoes a stringent quality evaluation process. This includes meticulous material inspections, thorough production assessments, and exhaustive pre-delivery examinations, all designed to ensure that only products of the highest caliber reach our customers' hands.

Excelling in customer service, we offer expert pre-sales guidance to help customers select the ideal air equipment tailored to their specific requirements. Our offerings are distinguished by high levels of customization in both appearance and configuration. By delivering bespoke products to meet the unique needs of dealers, including OEM solutions, we set ourselves apart in the industry. Our dedicated sales and service team ensures fast and effective after-sales support, prioritizing complete customer satisfaction.

At Sanzhi (Henan) Compressor Co., Ltd, we are deeply committed to delivering products of unparalleled quality and reliability. Our dedication to forging enduring partnerships with our valued customers is unwavering. We promise efficient delivery, exceptional product quality, and competitive pricing, making us the trusted choice for all your compressed air solutions.

Located in the dynamic city of Xinzheng, Henan Province, China, our factory enjoys a prime location just 30 kilometers from Xinzheng International Airport. We warmly invite you to visit us and offer complimentary transfers from the airport, ensuring a seamless and welcoming experience. Welcome to Sanzhi (Henan) Compressor Co., Ltd, where we are eager to showcase our commitment to excellence!

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.