Introducing our Special Screw Air Compressor, meticulously designed for powder conveying applications. This closed-type, low-pressure stationary screw air compressor is the perfect solution for sectors such as cement mixing plants, flour mills, coal ash handling, and mineral powder processing. Available in an array of power options including 11KW, 22KW, 37KW, 45KW, and 55KW, it guarantees exceptional performance and reliability tailored to your industrial needs.
Why choose Sanzhi 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, whether for cement or 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 adopts a large rotor with a low-speed design, delivering high efficiency, low noise, minimal vibration, and exceptional reliability with reduced leakage and impressive volume efficiency.
Smart Button Screen
Featuring concise and clear functions, this intuitive operation panel is simple to use and offers rapid response times with a clear display, ensuring easy maintenance.
Cooling System
The large heat exchange area design effectively prevents high-temperature malfunctions and reduces oil emulsification and coking caused by high temperatures.
Reliable Oil and Air Separator
Boasting a vertical tangential cyclone separation structure, this system ensures complete separation of oil and air, easy cartridge replacement, and reduced maintenance costs.
Safe and Zero Leakage Connection
Sanzhi has revolutionized the industry by moving away from traditional low-cost hydraulic hose designs. By implementing high-rigid pipes and flexible joint connections, the system avoids bursts typically caused by aging while the rubber-type O-ring offers a flexible seal to prevent leakage.
Aluminum Intake Valve
Designed to load with electricity and unload with its loss, this valve features functions of air replenishing and noise elimination for the host. Providing stable and durable performance, it boasts a smooth, wear-resistant surface.
Oil Viewing Mirror
Constructed from *** material, this mirror offers excellent transparency, high-temperature resistance, and minimal color change, allowing you to visually monitor oil level changes and the usage of lubricating oil for timely replacements and additions, preventing equipment damage.
Excellent Air Filter
Featuring exceptional air purification capabilities, this air filter ensures a clean air system with three-stage filtration, maximizing air purification and meeting standard emissions requirements, effectively removing steam and dust gas.
Oil Filter
Efficiently filtering impurities in the lubricating oil, this filter enhances lubrication for the head, extending the lifespan of the air compressor.
High-Quality Soundproof Cotton
This compact noise reduction housing achieves zero vibration amplitude during operation and works in tandem with high-quality soundproof cotton to significantly enhance 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 compressor is capable of 24-hour non-stop operation and can endure start/stop cycles up to 3 million times.
Intelligent Control System
Safety and Reliability with Humanized Intelligence: Our state-of-the-art electrical system combined with user-friendly computer intelligent control ensures seamless and secure operations.
User-Friendly Design
Effortless Operation: Designed with a simple structure for easy installation, straightforward operation, and minimal maintenance.
Energy Efficiency
Cutting-Edge Energy Savings: Optimize work efficiency to reduce energy consumption, achieving cost savings of 30-50%.
Advanced High-Temperature Shutdown Protection
Automatic Safety Measures: The system automatically shuts down if the operating temperature becomes too high, safeguarding the equipment and eliminating potential safety hazards.
1. Unmatched Pricing Advantage
We offer factory-direct pricing, giving our customers a unique competitive edge in the market.
2. Direct Transactions
All our products come directly from our factory, ensuring we provide the most cost-effective solutions.
3. Comprehensive OEM & ODM Services
Leveraging our robust production and management capabilities, we offer tailored OEM/ODM services to meet your specific needs.
4. Tailored Customization Services
We welcome non-standard orders including export orders, customized voltage, power, pressure, etc. Contact us for your specific requirements.
5. Small Order Friendly
Start with a small trial order to evaluate the superior quality of our products.
6. Prompt Delivery
Experience the seamless combination of high-quality products and timely delivery.
7. Full Authorization Support
For distributors, we provide comprehensive authorization certificates, empowering you to sell our SANZHI brand products with confidence.
SUCCESSFUL CASES
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 extensive 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!
More Products
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.
Audited Supplier 
){kind=link}
){kind=link}