China Supplier High Efficiency Permanent Magnetic Direct Driven Motor Twin-Stage Air Compressor

• Customization: Available
• After-sales Service: Online Technology Support
• Warranty: 1 Year for The Whole Machine & 2 Years for Airend
• Model NO.: SZ90VF-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: 90kw
• Exhaust Pressure: 0.5-1.6 MPa
• Weight: 3200kg
• Free Air Delivery* of Unit at Working: 24-11m³/Min
• Condition: New
• Voltage: 220V / 380V / 400V / 415V
• Frame Color: White, Beige and Gray Combination, or Any Color
• Transport Package: Standard Wooden Package
• Specification: 2700*1920*1820mm
• Trademark: SZ
• Origin: Zhengzhou
• HS Code: 8414804990
• Production Capacity: 500PCS/Month
• Package Size: 275.00cm * 197.00cm * 187.00cm
• Package Gross Weight: 3200.000kg

Product Description

Introducing the revolutionary Low-Pressure Compressor by Sanzhi (Henan) Compressor Co., Ltd.! This state-of-the-art Two-Stage Compression Permanent Magnet Variable Frequency Drive Screw Air Compressor is meticulously engineered to elevate industrial excellence to new heights. Available in a comprehensive array of power options-including 15KW, 22KW, 30KW, 37KW, 45KW, 55KW, 75KW, 90KW, 110KW, 132KW, 160KW, 185KW, 200KW, and 250KW-this versatile powerhouse ensures unparalleled efficiency and reliability. Transform your operations with this cutting-edge solution, crafted to meet the diverse and demanding needs of today's advanced industries. Experience the pinnacle of performance and innovation with Sanzhi's exceptional air compressor technology.

Product Structure

 

Internal Structure Frontside

Internal Structure Backside

Working Principle

In an ideal air compression scenario, the energy required for single-stage pressure transmission equates to the combined energy demands of multi-stage compression. However, real-world factors such as coupling power losses, bearing friction, and the cooling effects of fluid viscosity result in higher operational power requirements. By reducing the compression ratio at each stage, these inefficiencies are minimized. Consequently, the total power consumption for multi-stage compression is lower than that of single-stage compression.

Our cutting-edge two-stage screw air compressor features a sophisticated twin-stage rotary screw mechanism. This advanced system includes an active screw in each stage driving a passive screw via a robust external power transmission setup. The first stage employs a low-pressure screw group, while the second stage uses a high-pressure screw group. Every screw is encased within a sealing air film. As they rotate, the gas undergoes a tri-phase process: suction, pressurization, and exhaust, ensuring optimal compression efficiency.

First Stage Compression: Equipped with a low-pressure screw group, the initial stage of the two-stage screw air compressor compresses the gas efficiently. Gas is drawn into the compression chamber through the suction valve, where the high-speed rotation of the screw rotor compresses it before it gets transferred to the second stage.

Second Stage Compression: Within the second stage screw group, the gas is further compressed in a more confined screw space, reaching higher temperatures and pressures. The exhaust valve then opens, releasing the high-pressure gases from the system and completing the compression process.

Natural air is initially drawn through the air filter into the first compression stage, where it merges with a small quantity of lubricating oil. This mixture is compressed to an intermediate pressure. Following this, the gas enters a cooling channel, interacting with a substantial amount of oil mist that significantly lowers its temperature. The cooled, compressed gas then advances to the second-stage rotor for final compression to the ultimate exhaust pressure. The process culminates as the fully compressed gas exits the system through the exhaust valve, completing the compression cycle.

Detailed Photos

 

 

1) High efficiency of PM motor:Experience unparalleled efficiency with our advanced permanent magnet motor. Its constant torque range and weak magnetic range are significantly wider, delivering an efficiency boost of 20-30% over conventional motors. Even when operating away from the rated frequency, the motor sustains its high efficiency, ensuring optimal performance at all times.

2) Two-stage compression unique air end:Our revolutionary two-stage compression screw machine features a uniquely designed air end. The first and second-stage compression rotors are combined within a single casing and driven directly by gears, enabling each rotor to achieve the optimal linear speed and thereby maximizing compression efficiency.

3) Integrated frequency converter:Equipped with China's premier frequency system, the air compressor offers a wide range of speed regulation and high precision. Users can modulate the frequency according to actual gas demand, leading to remarkable energy savings and operational efficiency.

 

4) Reduce internal leakage:Employing two-stage compression technology reduces the compression ratio for each stage, thereby minimizing internal leakage from the high-pressure end to the low-pressure end while significantly enhancing volumetric efficiency.

5) Variable frequency start and the soft startof the motor are achieved, significantly reducing the impact on power grid equipment and preventing damage to electrical components.

6) Reduce energy consumption:Our frequency conversion operates from 25% to 100%, a significant improvement over the ordinary 50% to 100% range. Compared to fixed-speed air compressors, energy savings can exceed 30%. Even against regular variable frequency compressors, it offers around 5% more energy efficiency, with greater savings for systems with fluctuating gas demands.

 

7) No transmission loss:The permanent magnet motor and compressor utilize an embedded integrated shaft direct connection structure, making it more compact. With no couplings or other transmission parts, the transmission efficiency reaches an unparalleled 100%.

8) Air cooling method:Our high energy-efficient air cooling method delivers excellent cooling performance, significantly reducing the temperature of compressed air. This near-isothermal compression also minimizes pressure loss between stages, reducing the compression ratio and enhancing overall efficiency.

9)Smart Touch Controller:Our state-of-the-art built-in intelligence requires minimal manual operation. Featuring a high-precision color electronic screen, it provides clear graphical displays, maintenance information, fault alarms, and safety shutdown alerts for seamless operation.

 

10)Special Type Intake Valve:Automatically controlled opening ensures smooth engine fuel injection and lubricating oil circulation.
Ultra-low oil circuit loss enhances overall efficiency.
The normally open solenoid valve automatically closes during emergency stops to prevent oil injection, ensuring system safety.

11)Excellent Air Filter:Our top-tier air filter boasts exceptional air purification capabilities, ensuring a clean air system with three-stage filtration for superior air quality. It efficiently removes steam and dust, meeting stringent emission standards.

12)High-Quality Soundproof Cotton:Our compact noise reduction housing, coupled with high-quality soundproof cotton, minimizes operational vibration and significantly enhances noise reduction, ensuring a quieter, more efficient workspace.

 

13) Motor maintenance-free:Our permanent magnet motor, free of internal bearings, eliminates the need for motor bearing maintenance and replacement, reducing long-term maintenance costs and enhancing reliability.

14) Noise reduction:Experience unparalleled tranquility with our state-of-the-art two-stage compression technology. This advanced system significantly lowers the compression ratio, dramatically reducing operational noise, especially during unloading. Revel in a quieter, more efficient working environment.

15) Effortless Maintenance and Service:Our innovative two-stage compressor unit preserves the familiar structure and systems of a single-stage compressor. By excluding only the screw air end, we ensure that maintenance and service remain straightforward and user-friendly for everyone, allowing for hassle-free upkeep and consistent performance.

Product Parameters

 

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. Competitive Pricing

Experience unbeatable rates by sourcing directly from us, ensuring you stay ahead in the competitive market with factory-direct prices.

2. Direct Transactions
Benefit from superior cost-effectiveness and direct sourcing as all our products are supplied straight from the factory to you.

3. OEM & ODM Services
Leverage our robust production and management capabilities to receive bespoke OEM and ODM services tailored precisely to your requirements.

4. Customized Solutions
We cater to non-standard and export orders with specific voltage, power, and pressure needs. Reach out with your customization requests.

5. Small Order Acceptance
Begin with a small trial order to experience the exceptional quality of our products firsthand.

6. Rapid Delivery
Receive high-quality products swiftly and on time, ensuring your operations run seamlessly without any interruptions.

7. Comprehensive Authorization
Empower your distribution with full authorization certificates, allowing you to confidently market and sell SANZHI brand products.

Packaging & Shipping

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Company Profile

Sanzhi (Henan) Compressor Co., Ltd is a prestigious manufacturer, renowned for its expertise in producing top-tier screw air compressors and screw vacuum pumps. With over a decade of industry experience, we offer a vast product portfolio, including: - Normal Pressure and Low-Pressure Screw Air Compressors - Permanent Magnet Frequency Conversion Screw Air Compressors - Two-Stage Compression Screw Air Compressors - Screw Air Compressors for Laser Cutting - Single-Tank and Double-Tank Mobile Screw Air Compressors - Electric and Diesel Mobile Screw Air Compressors - Screw Vacuum Pumps Our diverse range ensures we have the perfect solution for every need, from standard applications to specialized industrial requirements.

Our state-of-the-art production facility boasts cutting-edge multi-air compressor assembly lines, ensuring unparalleled efficiency and precision. Supported by a dedicated and skilled team of over 50 employees, we continuously enhance our management systems, such as ERP, to minimize lead times and guarantee rapid delivery of superior products.

Our management systems are meticulously designed to uphold the pinnacle of quality standards. Certified under the esteemed ISO9001 quality management system, we adhere to rigorous quality control protocols. Each machine undergoes comprehensive inspections at various stages, from material testing to production checks and pre-delivery evaluations, ensuring unmatched product reliability and excellence.

Our customer service is second to none. Our pre-sales team offers expert guidance on selecting the ideal air equipment for diverse facilities and provides extensive customization options, from appearance to configuration. We also create bespoke products to meet specific dealer demands through our comprehensive OEM services. Our professional sales and service team stands ready to offer prompt and efficient post-sales support, ensuring swift responses to any customer needs.

At Sanzhi (Henan) Compressor Co., Ltd, our unwavering commitment is to deliver superior, reliable, and stable products. We aim to build enduring relationships with our clients by promising efficient delivery, high-quality machinery, and competitive pricing. Trust us to provide the optimal compressed air solution for your needs.

Nestled in the picturesque Xinzheng City, Henan Province, China, our factory is conveniently located just 30 kilometers from Xinzheng International Airport, roughly an hour's drive away. We warmly welcome you to visit our facility and experience firsthand our exceptional offerings and hospitality!

 

Successful Cases

Frequently Asked Questions
Q1. Are you a trading company or manufacturer?
A: We are a distinguished manufacturer specializing in screw air compressors, proudly boasting over a decade of industry expertise.

Q2. How do you control quality?
A: 1. Our raw materials undergo rigorous inspection to ensure the highest quality.
2. The meticulous installation process is stringently monitored.
3. Every machine is subjected to a minimum of 5 continuous hours of testing before dispatch to ensure optimal performance.

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.
Share this information with us, and we will tailor a perfect 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 offers a range of voltages including 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, 440v/60hz/3p, with customization options to meet your specific requirements.

Q6. How long is the delivery time?
A: For standard voltage units, delivery is within 15 working days post order confirmation. For non-standard requirements, please contact our sales team.

Q7. What's the payment term?
A: Payment terms include 30% T/T in advance, 40% T/T before shipment, and the remaining 30% T/T upon B/L copy. Payments can be made in USD or RMB.

Q8. How about your warranty?
A: We offer a comprehensive warranty of one year for the entire machine and two years for the screw air compressor, excluding consumable spare parts.

Q9. What about the maintenance?
A: The initial maintenance is required after 500 hours of operation. Subsequent maintenance should be performed every 2000-3000 hours, taking into account the actual working environment.

Q10. Can machines be run in high-temperature environment?
A: Absolutely, our machines are designed to operate efficiently in high-temperature environments, with a working temperature range from -20° to 45° (-4ºF to 113ºF).

Q11. Do you offer OEM service?
A: Yes, we excel in both OEM & ODM services, backed by our professional design team. Your custom orders are highly welcomed.

Q12. How long could your air compressor be used?
A: Our air compressors are engineered for longevity, typically exceeding 10 years of service life.

Q13. Will you provide some spare parts for the machines?
A: Absolutely! We proudly offer an extensive array of premium spare parts, ensuring your machinery operates smoothly and efficiently at all times.

Q14. How about your after-sales service?
A: We deliver outstanding after-sales support, including comprehensive online installation and commissioning guidance. Furthermore, our expert engineers are available for on-site training and installation assistance whenever necessary.