China Sanzhi 75HP Air Cooled Compressor, Ideal for 0.5-1.6 MPa Applications, Two-Stage Permanent Magnet Variable-Frequency Drive Screw-Compressor

• 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: Experience the artfully crafted frontside of our compressor's internal structure, where precision meets excellence. Witness the flawless integration of each component, expertly engineered to deliver peak performance and unwavering durability.

Internal Structure Backside: Delve into the intricately designed backside of the internal structure, offering robust support to the system's core functionalities. This sophisticated engineering marvel enhances the compressor's overall operational stability and resilience.


Working Principle: Discover the groundbreaking working principle that powers the Sanzhi Compressor, an innovative synthesis of cutting-edge technology and air compression science. Our compressor is engineered to achieve unprecedented efficiency and power.

In an ideal air compression process, the theoretical power for single-stage pressure transmission aligns with the total power for multi-stage compression. However, in practical scenarios, actual power requirements rise due to transmission losses, friction, and cooling effects. By strategically lowering the compression ratio at each stage, we can reduce unnecessary power consumption. This approach allows multi-stage compression to be more power-efficient than single-stage compression.

The two-stage screw air compressor represents a pinnacle of engineering, boasting a dual-stage rotary screw design. In each stage, an active screw drives a passive counterpart using an external power source. The first stage uses a low-pressure screw group, while the second stage employs a high-pressure version. Surrounding each screw is a sealing air film, ensuring seamless gas compression through cycles of suction, pressurization, and exhaust, culminating in remarkable efficiency.

First stage compression: In this crucial initial phase, the two-stage screw air compressor utilizes a low-pressure screw group to compress gas. The gas enters the screw compression chamber via the suction valve, and as the screw rotor accelerates, the gas is efficiently expelled and advanced to the next compression phase.

Second stage compression: In this pivotal advanced phase, gas enters a constricted screw space within the second-stage screw group, facing increased temperature and pressure. The exhaust valve then releases the high-pressure gas, effectively concluding the compression sequence with maximum efficiency.

Natural air is initially drawn into the compression system through an air filter, merging with a minimal amount of lubricating oil in the compression chamber. This mixture undergoes initial compression to an interstage pressure level, then passes through a cooling channel, where abundant oil mist significantly reduces its temperature. The cooled, compressed gas then enters the second-stage rotor for further compression, reaching the final exhaust pressure. This fully optimized cycle concludes as compressed air is released via the exhaust valve, exemplifying peak efficiency.

 

Detailed Photos

 

 

 

1) High Efficiency of PM Motor: Discover the unmatched prowess of our permanent magnet motor, which delivers an astonishing 20-30% higher efficiency than typical motors. This cutting-edge design ensures optimal performance across all operating frequencies, so you enjoy consistent peak efficiency at all times.

2) Motor Maintenance-Free: Our innovative permanent magnet motor is crafted with a design that lacks internal bearings, thereby eradicating the need for bearing maintenance or replacement. This feature not only saves you time and effort but also reduces operational costs.

3) Integrated Frequency Converter: Equipped with China's premier frequency system, this air compressor offers precise and extensive speed regulation, optimizing energy usage to match your specific air demand for unparalleled efficiency.

4) No Transmission Loss: With a direct connection integrated shaft design, the motor and compressor are seamlessly linked, delivering a compact build with 100% transmission efficiency. This eliminates the need for any couplings or additional transmission parts.

5) Variable Frequency Start and Soft Start The motor features advanced variable frequency start and soft start capabilities, effectively minimizing the impact on power grid systems and safeguarding electrical equipment from potential damage.

6) Reduce Energy Consumption: Boasting a frequency conversion range from 25% to 100%, this system surpasses fixed-speed compressors, saving over 30% in energy. Compared to standard variable frequency compressors, it delivers an additional 5% savings, showcasing superior efficiency in variable gas demand scenarios.

7) Two-Stage Compression Unique Air End: Our remarkable two-stage compression screw design combines the first and second-stage compression rotors in a single casing. Each rotor is independently gear-driven, maximizing linear speed and significantly boosting compression efficiency.

8) Internal Spray Curtain Cooling Method: Leveraging a high-energy-saving internal spray curtain cooling approach, this method excels in lowering compressed air temperatures, achieving near-isothermal compression, reducing stage pressure loss, and elevating compression efficiency.

9) Reduce Internal Leakage: By implementing two-stage compression, we effectively lower the compression ratio per stage. This strategic approach minimizes internal leakage from high to low pressure, enhancing volumetric efficiency dramatically.

10) Noise Reduction: The two-stage compression significantly decreases the compression ratio, resulting in a substantial drop in noise levels, especially during unloading, creating a quieter and more pleasant work environment.

11) Easy Maintenance and Service: Maintaining the simplicity akin to single-stage systems, this two-stage compressor unit is user-friendly and easy to service, ensuring hassle-free maintenance for end-users, apart from the screw air end.

 

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: Revel in outstanding pricing benefits that give you a competitive edge like no other.

With our commitment to providing ex-factory prices directly, we empower you to maintain and enhance your competitive advantage effortlessly.

2. Direct Deal: Enjoy the streamlined process and cost savings of purchasing directly from the manufacturer.
All products are delivered straight from our factory floor to you, guaranteeing the most economical and efficient solutions available.

3. OEM & ODM Services: Bespoke solutions crafted to perfectly fit your business's unique requirements.
Our factory boasts robust production and management capabilities, enabling us to provide exceptional OEM/ODM services tailored to your specific needs.

4. Customized Service: Precision-tailored solutions to meet every single one of your specifications.
We accept and excel at fulfilling non-standard, export, and custom orders, covering voltage, power, and pressure. Share your specifications, and consider them realized.

5. Accept Small Orders: Flexibility to begin with smaller quantities, ensuring absolute satisfaction with our products.
Initiate with a smaller trial order to experience the superior quality and excellence of our offerings.

6. Fast Delivery: Swift and dependable delivery of top-tier products.
Receive our high-quality products with the confidence of prompt and efficient delivery services.

7. Complete Authorization: Fully empowering distributors with comprehensive access to our distinguished brand.
We provide exhaustive authorization certificates to our distributors, enabling you to confidently market, promote, and sell our esteemed SANZHI brand products with full assurance.

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Packaging & Shipping

Company Profile

 

Sanzhi (Henan) Compressor Co., Ltd is a distinguished leader in the manufacturing of ground-breaking screw air compressors and sturdy screw vacuum pumps. With over ten years of unmatched excellence, we deliver a comprehensive range of industrial solutions. Our offerings include standard and low-pressure screw air compressors, state-of-the-art permanent magnet frequency conversion screw air compressors, and sophisticated two-stage compression screw air compressors. We specialize in screw air compressors for laser cutting, and present versatile single and double-tank mobile screw air compressors available in both electric and diesel forms. Our flexible screw vacuum pumps are engineered to satisfy your industrial requirements with precision and dependability.

In terms of production, we lead with our cutting-edge multi-air compressor assembly lines that exemplify efficiency and modern sophistication. Supported by a committed team of over 50 proficient employees, we consistently enhance management systems, including ERP, to significantly shorten lead times and facilitate the swift delivery of superior quality products. Our unwavering pursuit of excellence enables us to cater to the varied demands of our clients swiftly and efficiently.

Our management framework proudly upholds the esteemed ISO9001 quality management system certification. We are resolute in enforcing strict quality control standards, implementing rigorous processes to ensure each machine undergoes exacting material inspection, thorough production inspection, and an exhaustive pre-delivery inspection. This steadfast dedication ensures that every product we deliver stands as a testament to our commitment to outstanding quality and reliability.

In terms of customer service, we excel by providing expert pre-sales guidance to assist customers in choosing air equipment tailored to their specific facility needs. Our offerings include extensive customization options, from aesthetic design to functional allocation, crafting unique products to meet the specific demands of dealers through OEM solutions. For after-sales support, our dedicated professional sales and service team is poised to respond swiftly to customer inquiries, ensuring unmatched service and satisfaction.

At Sanzhi (Henan) Compressor Co., Ltd, we are passionately committed to offering superior and dependable products, nurturing enduring relationships with our esteemed clients. We are dedicated to delivering not only efficient service and competitively priced, high-quality machinery but also a trustworthy and satisfying compressed air solution tailored to your needs.

Our contemporary factory is strategically situated in Xinzheng City, Henan Province, China, granting convenient access from Xinzheng International Airport to our premises, just 30 kilometers away, approximately an hour's drive. We warmly extend an invitation to visit our company and witness our devotion to excellence firsthand.

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.