Introducing our Special Screw Air Compressor, meticulously engineered for powder conveying. This closed-type, low-pressure, stationary screw air compressor is the perfect choice for cement mixing plants, flour mills, coal ash handling, and mineral powder processing. Available in power options of 11KW, 22KW, 37KW, 45KW, and 55KW, it promises exceptional performance and reliability in demanding industrial environments.
Why Choose Sanzhi Dust Special Compressor?
The primary function of our Special Low Pressure Air Compressor for Dust Conveying is to transport dust, cement, and other fine materials. Operating at a working pressure of 0.15-0.4Mpa, it features a direct drive system, large head, and low rotational speed. Designed with advanced German technology, it incorporates a unique oil-air separation structure for minimal noise and vibration. Installation is hassle-free, requiring no foundational support. The rapid flow rate of compressed air ensures a compressed air oil content of less than 2PPM, meeting stringent volume requirements. Additionally, its radiator operates without an after-cooling device, making it ideal for conveying materials like cement and flour that must remain moisture-free to prevent coking and caking, thus ensuring optimal conveying performance.
Sanzhi specializes in producing Special Low Pressure Air Compressors for Dust Conveying, ideal for applications in cement, mineral powder, coal ash unloading, and textile fermentation. These compressors are designed for high efficiency and energy savings. For instance, unloading a 9.6-meter cement tanker with the tanker's own device takes at least one and a half hours and consumes substantial fuel. In contrast, using our 37KW air compressor reduces this time to just 40 minutes, significantly boosting efficiency, conserving energy, and cutting costs.
Direct-Connected Rotation Motor
Insulation grade F, protective grade IP55, ensures a stable flow rate. Enjoy constant load, high efficiency, and exceptional durability.
German Technology Air End
Engineered with a large rotor and low-speed design, this air end guarantees high efficiency, low noise, minimal vibration, and exceptional reliability, with reduced leakage and enhanced volume efficiency.
Smart Button Screen
User-friendly functions with concise and clear operations, rapid response times, vibrant and easy-to-read display colors, and simple maintenance.
Cooling System
Designed with a large heat exchange area to effectively prevent high-temperature issues and reduce oil emulsification and coking caused by elevated temperatures.
Reliable Oil and Air Separator
Featuring a vertical tangential cyclone separation structure for complete oil and air separation, easy cartridge replacement, and reduced maintenance costs.
Safe and Zero Leakage Connection
Sanzhi has moved beyond traditional low-cost hydraulic hoses. Utilizing high-rigid pipes and flexible joint connections to prevent bursts from aging. The rubber-type O-ring offers a flexible seal, preventing leakage.
Aluminum Intake Valve
Operates by loading with electricity and unloading with loss of electricity. Features air replenishing and noise elimination functions. Offers stable, durable performance with a smooth, wear-resistant surface.
Oil Viewing Mirror
Crafted from *** material for excellent transparency, high-temperature resistance, and minimal color change. Allows for visual monitoring of oil levels and lubricating oil usage, ensuring timely replacements and additions to prevent equipment damage.
Excellent Air Filter
Superior air purification capabilities ensure a clean air system with three-stage filtration to maximize air purity and meet standard emissions. Efficiently removes steam and minute dust particles.
Oil Filter
Filters impurities from the lubricating oil, ensuring better lubrication for the head and extending the life of the air compressor.
High-Quality Soundproof Cotton
Compact noise reduction housing eliminates operational vibration. Paired with high-quality soundproof cotton to further 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. |
Rugged and Durable
Engineered for around-the-clock performance, this powerhouse can seamlessly operate 24/7 and withstand up to 3 million start/stop cycles.
Intelligent Control
Equipped with a safe and reliable electrical system, complemented by a user-friendly computer intelligent control for effortless operation.
Easy Use
Designed with simplicity in mind-easy to install, operate, and maintain, ensuring a hassle-free user experience.
Energy Saving
Optimized for maximum efficiency, this compressor cuts energy consumption, delivering cost savings of 30-50%.
High-Temperature Shutdown Protection
Automatically shuts down when operating temperatures exceed safe levels, protecting the equipment from damage and mitigating potential safety hazards.
1. Price Advantage
We offer customers direct-from-factory prices, ensuring our clients remain highly competitive in their markets.
2. Direct Deal
All our products come straight from the factory, enabling us to offer more cost-effective solutions.
3. OEM & ODM Services
With our robust production and management capabilities, we provide comprehensive OEM and ODM services tailored to your needs.
4. Customized Service
We accommodate non-standard orders, including export demands, and modifications in voltage, power, and pressure. Contact us to customize your requirements.
5. Small Order Acceptance
Initiate a small trial order to evaluate the superior quality of our products.
6. Fast Delivery
Experience high-quality products with prompt and reliable delivery.
7. Complete Authorization
For our distributors, we offer a full authorization certificate, empowering you to sell our SANZHI brand products confidently.
Remarkable Success Cases
About us
Sanzhi (Henan) Compressor Co., Ltd is a distinguished manufacturer specializing in an extensive range of screw air compressors and screw vacuum pumps, boasting over a decade of industry expertise. Our comprehensive product lineup includes normal pressure/low-pressure screw air compressors, permanent magnet frequency conversion screw air compressors, two-stage compression screw air compressors, screw air compressors tailored for laser cutting, single-tank mobile screw air compressors, double-tank mobile screw air compressors, electric mobile screw air compressors, diesel mobile screw air compressors, and high-performance screw vacuum pumps, among others.
In production, our cutting-edge, multi-air compressor assembly lines ensure unparalleled efficiency. Thanks to the dedication of our 50+ employees, we continuously refine our management systems, including ERP, to minimize lead times and expedite the delivery of top-quality products.
In management, our factory has been awarded ISO9001 quality management system certification. We are committed to upholding rigorous quality management protocols and strict quality control processes. Every machine undergoes meticulous inspections, including material checks, production assessments, and pre-delivery evaluations, to guarantee superior performance.
In customer service, our pre-sales team offers expert guidance on selecting the ideal air equipment for various facilities. We provide extensive customization options, from appearance to configuration, and can even create bespoke products to meet specific dealer requirements, including OEM solutions. For after-sales, our dedicated sales and service team ensures prompt and effective support for our customers.
At Sanzhi (Henan) Compressor Co., Ltd, we are committed to delivering top-tier, reliable products to nurture long-term customer relationships. With our promise of efficient deliveries, high-quality machines, and competitive pricing, we are your dependable partner for superior compressed air solutions.
Our state-of-the-art factory is conveniently located in Xinzheng City, Henan Province, China. We offer complimentary transportation from Xinzheng International Airport, ensuring a seamless journey to our facility, just 30 kilometers away. We warmly welcome you to visit our company!
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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.
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