Introducing our premium and innovative Special Screw Air Compressor, meticulously crafted to revolutionize powder conveying applications. Engineered as a closed-type, low-pressure, stationary screw air compressor, it stands as the quintessential solution for diverse sectors including cement mixing plants, flour mills, coal ash handling, and mineral powder processing. Elevate your operations with our versatile compressor, available in a range of power options-11KW, 22KW, 37KW, 45KW, and 55KW-each designed to deliver unparalleled performance and reliability. Whether you require precision for delicate tasks or robust power for heavy-duty applications, our compressor is precisely tailored to meet and exceed your industrial demands.
Why Choose Sanzhi's Dust Special Compressor?
The primary function of the specialized low-pressure air compressor designed for dust conveying is to efficiently transport dust, cement, and similar materials. Operating within a pressure range of 0.15-0.4Mpa, this advanced machine utilizes a direct drive system, featuring a large head and low rotational speed. Engineered with a unique oil-air separation structure inspired by German technology, it ensures low noise and minimal vibration, eliminating the need for any foundational installation. The compressor's rapid airflow ensures that the compressed air has an oil content of less than 2PPM, guaranteeing the required air volume. The radiator operates without an after-cooling device, as moisture must be avoided during the conveying process to prevent caking and coking, which can severely impact performance. This meticulous design supports optimum conveying efficacy, ensuring flawless transportation of materials such as cement and even flour.
Sanzhi offers a specialized low-pressure air compressor tailored for dust conveying with diverse applications, including cement, mineral powder, coal ash unloading, and textile fermentation. This high-efficiency, energy-saving solution significantly boosts productivity and cost savings. For instance, unloading a 9.6-meter cement tanker using its built-in device typically takes at least 1.5 hours and is fuel-intensive and inefficient. In contrast, employing a 37KW air compressor from Sanzhi reduces this time to just 40 minutes, drastically enhancing efficiency, conserving energy, and reducing operational costs.
Direct-Connected Rotation Motor
Insulation grade F, protective grade IP55, stable flow rate. Constant load, high efficiency, and durability.
German Technology Air End
The air end employs a large rotor with a low-speed design, ensuring unparalleled efficiency, remarkably low noise, minimal vibration, and top-tier reliability. This innovative design minimizes leakage and maximizes volume efficiency.
Smart Button Screen
Featuring streamlined and clear functions, this user-friendly operation panel is straightforward to use, offering swift response times and a clear display for effortless maintenance.
Cooling System
The expansive heat exchange area effectively mitigates high-temperature malfunctions, reducing oil emulsification and coking caused by elevated temperatures, ensuring optimal performance.
Reliable Oil and Air Separator
With a vertical tangential cyclone separation structure, this system guarantees full separation of oil and air, facilitating easy cartridge replacement and lowering maintenance costs.
Safe and Zero Leakage Connection
Sanzhi has set a new industry standard by moving away from traditional hydraulic hose designs. With high-rigid pipes and flexible joint connections, the system evades bursts due to aging. The rubber-type O-ring provides a flexible seal, ensuring zero leakage.
Aluminum Intake Valve
Designed to load with electrical power and unload when power is lost, this valve features air replenishing and noise elimination functions. It offers consistent and durable performance with a smooth, wear-resistant surface.
Oil Viewing Mirror
Crafted from high-quality materials, this mirror boasts excellent transparency, high-temperature resistance, and minimal color change, allowing you to visually monitor oil levels and lubricating oil usage for timely replacements and additions, preventing equipment damage.
Excellent Air Filter
With superior air purification capabilities, this air filter ensures a clean air system through three-stage filtration, maximizing air purity and meeting standard emissions requirements by effectively removing steam and dust.
Oil Filter
This filter efficiently removes impurities from the lubricating oil, enhancing lubrication for the head and extending the air compressor's lifespan.
High-Quality Soundproof Cotton
This compact noise reduction housing achieves zero vibration amplitude during operation and works synergistically with high-quality soundproof cotton to significantly elevate noise reduction levels.
| Model |
Power |
Pressure |
Free air delivery* of unit at working pressure |
Voltage |
Frequency |
Noise Level |
Air outlet discharge size |
Weight |
Dimensions |
| KW |
Mpa |
m³/min |
V |
Hz |
dB(A) |
Inch |
Kg |
L*W*H(mm) |
| SZ7.5 |
7.5 |
0.15-0.4 |
1.91 |
380 |
50 |
62 |
G3/4" |
300 |
700*700*1020 |
| SZ11 |
11 |
0.15-0.4 |
2.7 |
380 |
50 |
62 |
G3/4" |
320 |
700*700*1020 |
| SZ15 |
15 |
0.15-0.4 |
3.2 |
380 |
50 |
63 |
G1" |
530 |
1250*780*1220 |
| SZ18 |
18.5 |
0.15-0.4 |
4.5 |
380 |
50 |
65 |
G1" |
560 |
1250*780*1220 |
| SZ22 |
22 |
0.15-0.4 |
5.3 |
380 |
50 |
66 |
G1" |
570 |
1250*780*1220 |
| SZ30 |
30 |
0.15-0.4 |
7.1 |
380 |
50 |
67 |
G1½" |
740 |
1500*940*1350 |
| SZ37 |
37 |
0.15-0.4 |
10.0 |
380 |
50 |
68 |
G1½" |
770 |
1500*940*1350 |
| SZ45 |
45 |
0.15-0.4 |
11.0 |
380 |
50 |
70 |
G1½" |
1060 |
1800*1100*1600 |
| SZ55 |
55 |
0.15-0.4 |
13.0 |
380 |
50 |
73 |
G2"/DN50 |
1250 |
1800*1100*1600 |
| SZ75 |
75 |
0.15-0.4 |
18.0 |
380 |
50 |
73 |
G2"/DN50 |
1480 |
1900*1200*1700 |
| SZ90 |
90 |
0.15-0.4 |
21.0 |
380 |
50 |
78 |
DN80 |
2030 |
2200*1600*1800 |
| SZ110 |
110 |
0.15-0.4 |
27.0 |
380 |
50 |
78 |
DN80 |
2450 |
2250*1600*1800 |
| SZ132 |
132 |
0.15-0.4 |
32.0 |
380 |
50 |
78 |
DN80 |
2550 |
2300*1700*1900 |
| SZ160 |
160 |
0.15-0.4 |
40.0 |
380 |
50 |
78 |
DN80 |
2710 |
2800*1900*2000 |
| SZ185 |
185 |
0.15-0.4 |
45.0 |
380 |
50 |
78 |
DN100 |
3800 |
2800*1760*1920 |
| SZ200 |
200 |
0.15-0.4 |
48.0 |
380 |
50 |
78 |
DN100 |
4100 |
3300*2200*2000 |
| SZ220 |
220 |
0.15-0.4 |
53.0 |
380 |
50 |
78 |
DN100 |
4950 |
3000*2100*2150 |
| SZ250 |
250 |
0.15-0.4 |
60.0 |
380 |
50 |
78 |
DN100 |
5200 |
3000*2100*2150 |
| SZ315 |
315 |
0.15-0.4 |
75.0 |
380 |
50 |
78 |
DN100 |
5650 |
3500*2250*2150 |
| SZ355 |
355 |
0.15-0.4 |
85.0 |
380 |
50 |
78 |
DN100 |
5750 |
3500*2250*2150 |
| Due to product updates, the above parameters are subject to deviation in kind. |
Built to Last: Unmatched Ruggedness and Durability
Engineered for Continuous Performance: Our 75kw Powerful Screw Air Compressor is a marvel of engineering, capable of 24-hour non-stop operation and enduring start/stop cycles up to an astonishing 3 million times. Experience relentless performance with unwavering reliability, tailored for the most demanding industrial applications.
Intelligent Control System
Safety and Reliability with Humanized Intelligence: Experience peace of mind with our state-of-the-art electrical system, seamlessly integrated with a user-friendly computer intelligent control for secure, uninterrupted operations. Our innovative system ensures ultimate safety and reliability, making your operations smoother and more efficient.
User-Friendly Design
Effortless Operation: Our compressor boasts a simple, streamlined structure, ensuring easy installation, straightforward operation, and minimal maintenance. Designed for convenience, it minimizes downtime and maximizes productivity.
Energy Efficiency
Cutting-Edge Energy Savings: Achieve optimal work efficiency while drastically reducing energy consumption, delivering cost savings of 30-50%. Our advanced technology ensures that you get maximum performance with minimum energy usage, helping you save on operational costs.
Advanced High-Temperature Shutdown Protection
Automatic Safety Measures: The system is designed to automatically shut down if the operating temperature exceeds safe limits, protecting the equipment and eliminating potential safety hazards. This automatic feature enhances safety and prolongs the lifespan of your compressor.
1. Unmatched Pricing Advantage
We offer unbeatable factory-direct pricing, giving our customers an exclusive edge in the competitive market landscape.
2. Seamless Direct Transactions
All our products are sourced directly from our factory, ensuring we deliver the most cost-efficient solutions to our clients.
3. Comprehensive OEM & ODM Services
Harnessing our exceptional production and management prowess, we provide bespoke OEM/ODM services tailored precisely to your unique requirements.
4. Tailored Customization Services
We accommodate non-standard orders including export specifications, custom voltage, power, pressure, and more. Reach out to discuss your specific needs.
5. Small Order Friendly
Initiate with a small trial order to assess the unparalleled quality of our offerings.
6. Swift and Reliable Delivery
Enjoy the perfect synergy of superior product quality and swift, reliable delivery.
7. Comprehensive Authorization Support
For our distributors, we offer extensive authorization certificates, empowering you to market our SANZHI brand products with utmost confidence.
Triumphant Success Stories
About us
Sanzhi (Henan) Compressor Co., Ltd is a premier manufacturer specializing in the production of high-performance screw air compressors and vacuum pumps, boasting over a decade of expertise. Our comprehensive product lineup includes normal pressure and low-pressure screw air compressors, energy-efficient permanent magnet frequency conversion screw air compressors, advanced two-stage compression screw air compressors, specialized screw air compressors for laser cutting, versatile single-tank mobile screw air compressors, robust double-tank mobile screw air compressors, efficient electric mobile screw air compressors, reliable diesel mobile screw air compressors, and cutting-edge screw vacuum pumps.
Our production capabilities are maximized through state-of-the-art multi-air compressor assembly lines designed for lean and modern manufacturing. With the dedication of over 50 skilled employees, we continuously enhance management systems such as ERP, ensuring reduced lead times and the rapid delivery of top-quality products.
In terms of management, our factory has achieved ISO9001 quality management system certification. We are committed to maintaining a rigorous quality management framework, strictly adhering to standardized quality control processes. Each machine undergoes thorough material inspection, production inspection, and pre-delivery inspection to ensure superior quality.
Our customer service is exceptional, beginning with pre-sales where we provide expert guidance in selecting the ideal air equipment for various facilities, offering high levels of customization in appearance and configuration. We also specialize in creating unique OEM products tailored to meet dealer demands. For after-sales service, our professional sales and service team is always ready to respond promptly to customer needs.
At Sanzhi (Henan) Compressor Co., Ltd, we are dedicated to delivering superior, stable products and forging long-term relationships with our customers. With efficient delivery, high-quality machines, and competitive pricing, we are your trusted partner for all your compressed air solutions.
Located in Xinzheng City, Henan Province, China, our factory is conveniently accessible. We offer complimentary pickup from Xinzheng International Airport to our factory, a short 30-kilometer drive taking approximately one hour. We warmly welcome you to visit our company!
Frequently Asked Questions
Q1. Are you a trading company or manufacturer?
A: We are a distinguished manufacturer of screw air compressors, boasting over a decade of expertise.
Q2. How do you control quality?
A: 1. Rigorous inspection of top-quality raw materials.
2. Meticulously monitored installation processes ensuring precision.
3. Each unit undergoes no less than 5 hours of continuous testing before dispatch.
Q3. What information must I provide to get the suitable machine?
1. Required air delivery capacity (Unit: CFM or m³/Min)
2. Desired working pressure (Unit: PSI, Bar or Mpa)
3. Voltage and frequency specifications of your region (V/Hz)
4. Need for additional accessories like air tank, filters, and/or air dryers.
Share these details, and we'll tailor the 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 voltages such as 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, 440v/60hz/3p, with custom options available.
Q6. How long is the delivery time?
A: For standard voltages, 15 working days post order confirmation. For non-standard, please contact our sales team.
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. We accept USD and RMB.
Q8. How about your warranty?
A: One year for the entire machine and two years for the screw air compressor, excluding consumable parts.
Q9. What about the maintenance?
A: Initial maintenance at 500 hours, followed by regular maintenance every 2000-3000 hours, adjusted for the operational environment.
Q10. Can machines be run in high-temperature environments?
A: Yes, our machines operate efficiently in high-temperature regions, with a working range of -20° to 45°(-4ºF-113ºF).
Q11. Do you offer OEM service?
A: Absolutely, with our expert design team, we welcome both OEM & ODM orders.
Q12. How long could your air compressor be used?
A: Typically, they have a lifespan exceeding 10 years.
Q13. Will you provide some spare parts for the machines?
A: Yes, we certainly will.
Q14. How about your after-sales service?
A: We offer online installation and commissioning guidance and can arrange engineers for on-site training and installation support.
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