China Sanzhi 55kw VFD Permanent Magnet Variable-Frequency Drive Screw Air Compressor - 0.5-1.6 MPa for Food, Furniture, Renovation Industry

• Customization: Available
• Brand Name: Sanzhi
• Power: 55kw
• Model NO.: SZ55VF-II
• 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 world of air compression, achieving optimal efficiency is the ultimate goal. Ideally, the power requirement for single-stage pressure transmission should match the total power needed for a multi-stage compression system. However, in practical scenarios, factors such as coupling power loss, bearing friction, and the cooling effects brought about by liquid viscosity, often result in increased power consumption. To combat these inefficiencies, decreasing the compression ratio at each stage serves as a strategic remedy. This calculated approach ensures that the collective power demand for multi-stage compression does not exceed that of a single-stage system, thereby enhancing performance and minimizing energy wastage.

The revolutionary two-stage screw air compressor showcases an intricate design, incorporating dual rotary screw compressors, each consisting of an active and passive screw. The active screw, driven by an external power transmission mechanism, propels the passive screw into action. At the core of this dynamic system, the first stage utilizes a low-pressure rate screw group, while the second stage operates with a high-pressure rate variant. Each screw is enveloped by a sealing air film, which optimizes the rotational process, facilitating gas compression through an uninterrupted cycle of suction, pressurization, and exhaust. This design ensures superior efficiency and unparalleled performance.

First stage compression: During this preliminary phase, the two-stage screw air compressor employs a low-pressure rate screw group to deftly compress the gas. As the gas is drawn into the screw compression chamber through the suction valve, the swift rotation of the screw rotor gradually compresses it and channels it forward to the second stage, setting the stage for efficient, seamless compression.

Second stage compression: Advancing to the second stage, the gas enters a more restricted screw space, where it is subjected to increased temperature and pressure. As the compression process reaches its peak, the exhaust valve opens, effortlessly expelling the high-pressure gas, thereby maintaining the system's efficiency and effectiveness.

Natural air, thoroughly purified via an air filter, commences its journey into the first stage of compression, where it mingles with a small amount of lubricating oil within the compression chamber. This mixture is compressed to a mid-stage pressure. The resultant compressed gas then navigates through a cooling channel, where it encounters a plentiful oil mist that significantly reduces its temperature. Once cooled, the gas progresses to the second-stage rotor, undergoing a second compression cycle to achieve the final exhaust pressure. Completing its journey, the gas exits the compressor through the exhaust valve, marking the culmination of a flawless and efficient compression process.

 

Detailed Photos

 

 

 

1) Superior Efficiency of the PM Motor: The permanent magnet motor takes efficiency to a whole new level with its broad constant torque and extensive weak magnetic range, outperforming conventional motors by a remarkable 20-30%. This motor impressively retains its high efficiency even when operating outside the rated frequency, ensuring a consistently superior performance.

2) Maintenance-Free Motor Operation: Experience a revolution in maintenance with our cutting-edge permanent magnet motor design, which ingeniously eliminates internal bearings. This innovation not only slashes maintenance costs but also eradicates the need for routine motor bearing replacements, offering a hassle-free experience.

3) Seamless Integrated Frequency Converter: Equipped with China's premier frequency system, this compressor provides an extensive speed regulation range with precise control, perfectly matching real-time gas demands. This offers unrivaled frequency modulation, highlighting impressive energy-saving potential, and setting new standards for efficiency.

4) Absolute Transmission Efficiency: The integrated shaft structure of the permanent magnet motor and compressor guarantees seamless connection, achieving a sleek, compact design with an unbeatable 100% transmission efficiency. It eliminates the need for coupling or extra transmission components, ensuring flawless performance.

5) Variable Frequency and Soft Start Optimization Ingeniously crafted to mitigate impact on power grid infrastructure, this feature acts as a guardian for your electrical systems, offering protection against potential damage, and ensuring stability and reliability.

6) Enhanced Energy Efficiency: Offering a frequency conversion range of 25% to 100%-far exceeding the standard 50% to 100%-this compressor achieves more than 30% energy savings compared to fixed-speed counterparts. Even compared to other variable frequency models, it offers an additional 5% savings, with greater gas consumption fluctuations leading to even more significant savings.

7) Revolutionary Two-Stage Compression Air End: This pioneering two-stage compression screw machine masterfully combines the first and second-stage rotors in a single casing, each driven by gears to achieve optimal linear speeds and ultimate compression efficiency, setting a new benchmark for performance.

8) Innovative Internal Spray Curtain Cooling: Embrace state-of-the-art cooling with our advanced internal spray curtain method, which stands out for its energy efficiency and delivers phenomenal cooling effects. It significantly reduces compressed air temperatures, achieving near-isothermal compression while cutting pressure loss and enhancing efficiency.

9) Minimized Internal Leakage: Utilizing two-stage compression smartly reduces the compression ratio for each stage, effectively curbing internal leakage from high to low pressure areas, and subsequently enhancing volume efficiency.

10) Remarkable Noise Reduction: Our two-stage compression technology remarkably lowers the compression ratio, drastically reducing noise levels, especially noticeable during unloading, providing a quieter and more pleasant working environment.

11) Simplified Maintenance and Service: The two-stage compressor unit retains the familiar system structure of single-stage models, with adjustments only to the screw air end. This ensures straightforward maintenance routines and user-friendly operation, offering a seamless experience.

 

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. Unbeatable Price Advantage

We empower our customers by providing direct access to ex-factory prices, ensuring you gain a formidable competitive edge in the market.

2. Direct Transactions
Our complete product range is accessible straight from our factory, offering you a more economical and value-centric solution that's hard to match.

3. Bespoke OEM & ODM Services
Leverage our factory's strong production and management prowess to enjoy bespoke OEM and ODM services tailored to fit your exact demands.

4. Personalized Customization Service
Welcome to our world of flexible customization for non-standard and export orders, where voltage, power, and pressure specs are tailored to your precise needs. Connect with us to discuss your specifications.

5. Small Orders Welcomed
Initiate your journey with us through a small trial order, ideal for evaluating the superior quality of our products right from the start.

6. Swift Delivery
Receive top-notch product fulfillment with the promise of timely delivery, ensuring your satisfaction every single time.

7. Full Authorization
We equip our valued distributors with complete authorization certificates, allowing you to confidently market and sell our prestigious SANZHI brand products.

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Packaging & Shipping

Company Profile

 

Sanzhi (Henan) Compressor Co., Ltd is a prestigious manufacturer heralded for over a decade of unparalleled expertise in crafting superior screw air compressors and vacuum pumps. Our extensive product portfolio boasts an impressive variety of offerings, including both normal and low-pressure screw air compressors, pioneering permanent magnet frequency conversion screw air compressors, and the sophisticated two-stage compression screw air compressors. We also provide specialized solutions such as screw air compressors tailored for laser cutting, adaptable single-tank and double-tank mobile screw air compressors, highly efficient electric mobile screw air compressors, robust diesel mobile screw air compressors, and high-performance screw vacuum pumps, among other innovations.

Our cutting-edge production facilities are outfitted with advanced multi-air compressor assembly lines, engineered for peak efficiency and showcasing the zenith of lean, modern manufacturing techniques. A committed team of over 50 proficient employees tirelessly enhances our management systems, including ERP, to significantly reduce lead times, ensuring our customers receive premium products with speed and reliability.

Our steadfast dedication to quality management shines through our factory's ISO9001 certification and strict compliance with rigorous quality management standards. Every machine embarks on a thorough quality journey, encompassing meticulous material scrutiny, comprehensive production evaluations, and exhaustive pre-delivery inspections, guaranteeing that only the finest machines depart our facility.

In terms of customer service, we are unmatched, offering expert pre-sales guidance to help clients choose the perfect air equipment precisely tailored to their needs, complete with extensive customization options for both appearance and configuration. Our prowess in delivering bespoke products to meet the unique requirements of dealers, including OEM solutions, distinguishes us. Furthermore, our dedicated sales and service team is committed to providing swift and effective after-sales support, ensuring total customer satisfaction.

At Sanzhi (Henan) Compressor Co., Ltd, we are ardently committed to delivering products of exceptional quality and reliability, cultivating lasting partnerships with our esteemed customers. Our commitment to prompt delivery, outstanding product quality, and competitive pricing establishes us as the dependable choice for all your compressed air solution needs.

Situated in the lively city of Xinzheng, Henan Province, China, our factory is ideally located a mere 30 kilometers from Xinzheng International Airport. We warmly welcome you to visit us and offer complimentary transfers from the airport to our facility, ensuring a seamless and hospitable experience. 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.