Discover the pinnacle of engineering with our specialized Screw Air Compressor, meticulously crafted for impeccable Powder Conveying! Presenting the Closed Type Low Pressure Stationary Screw Air Compressors, specifically designed to meet the rigorous demands of Cement Mixing Plants, Flour Mills, and the handling of Coal Ash & Mineral Powder. Our diverse selection, ranging from 11KW to the formidable 132KW power options, guarantees an ideal solution for every industrial requirement. Choose from our robust lineup: 11KW, 22KW, 37KW, 45KW, 55KW, 75KW, 90KW, 110KW, and the unparalleled 132KW, to ensure your operations run seamlessly.
Why choose Sanzhi dust special compressor?
The main function of the special low-pressure air compressor for dust conveying is to efficiently transport dust, cement, and various other materials. This advanced system operates with a working pressure between 0.15 and 0.4Mpa. It features a direct drive mechanism, a robust and large head operating at low rotational speeds, and a specialized oil-air separation structure engineered with cutting-edge German technology. This sophisticated design ensures minimal noise and vibration, eliminating the need for a foundational installation. The air compressor provides a rapid flow rate with an oil content in the compressed air of less than 2PPM, guaranteeing that the air volume meets the necessary specifications. Notably, the radiator doesn't include an after-cooling device, preventing moisture in the air stream, which is crucial for materials like cement and flour to avoid coking and caking, thus maintaining efficient transportation.
Sanzhi's special low-pressure air compressor for dust conveying boasts a broad spectrum of applications, including cement, mineral powder, coal ash unloading, and textile fermentation. Engineered for high efficiency and energy conservation, it stands out in the industry. For instance, unloading a 9.6-meter cement tanker using the tanker's own device typically requires at least one and a half hours and consumes substantial fuel. In contrast, utilizing a 37KW air compressor from Sanzhi reduces the unloading time to just 40 minutes. This significant enhancement in efficiency not only saves time and energy but also reduces operational costs considerably.
Premium Direct-Connected Rotation Motor
Built with insulation grade F and protective grade IP55 for a stable flow rate. Experience constant load performance, high efficiency, and long-lasting durability.
Cutting-Edge German Technology Air End
Adopting a large rotor and low-speed design, this air end guarantees high efficiency, low noise, minimal vibration, and outstanding reliability. Expect less leakage and superior volume efficiency.
User-Friendly Smart Button Screen
Designed for simplicity and clarity, this interface offers fast response speeds, clear display colors, and easy maintenance.
Advanced Cooling System
Featuring a large heat exchange area, this system effectively prevents high-temperature issues. It reduces oil emulsification and coking caused by excessive heat, ensuring optimal performance.
Highly Reliable Oil and Air Separator
Equipped with a vertical tangential cyclone separation structure, this unit ensures complete oil and air separation, easy cartridge replacement, and reduced maintenance costs.
Safe, Zero-Leakage Connections
Sanzhi surpasses traditional low-cost hydraulic hoses by utilizing high-rigidity pipes and flexible joints. This design prevents burst risks and employs rubber type 0-rings for flexible, leak-preventive seals.
Durable Aluminum Intake Valve
This valve operates on electricity for loading and unloads with power loss. It features noise elimination, air replenishment, stable and durable performance, a smooth surface, and wear-resistant qualities.
High-Quality Oil Viewing Mirror
Crafted from *** material for excellent transparency, high-temperature resistance, and minimal color change. Visually monitor oil levels and lubricating oil usage to ensure timely replacements and prevent damage.
Superior Air Filter
This exceptional air filter ensures a clean air system with three-stage filtration, optimizing air purity and meeting standard emissions. Efficiently removes steam and dust gas.
Optimal Oil Filter
This oil filter effectively removes impurities from lubricating oil, enhancing lubrication and extending the air compressor's lifespan.
Top-Notch Soundproof Cotton
Compact noise reduction housing, paired with high-quality soundproof cotton, eliminates operational vibration and significantly enhances 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 uninterrupted 24-hour operation, this powerhouse can handle up to 3 million start/stop cycles, ensuring peak performance and reliability.
Intelligent Control
Our advanced, human-centric computer intelligent control system and dependable electrical framework guarantee safe and reliable operation.
Easy Use
Designed with simplicity in mind, it boasts a straightforward structure that makes it incredibly easy to install, operate, and maintain.
Energy Saving
Boost your work efficiency while slashing energy consumption, achieving an impressive 30-50% cost reduction.
High-Temperature Shutdown Protection
Automatically shuts down when temperatures soar too high, protecting your equipment from damage and mitigating potential safety risks.
1. Unbeatable Price Advantage
We provide direct ex-factory prices to our customers, guaranteeing unmatched competitiveness in the market.
2. Direct Deal Assurance
All our products are delivered straight from the factory, allowing us to offer the most cost-effective solutions available.
3. Comprehensive OEM & ODM Services
With robust production and management capabilities, our factory offers tailor-made OEM/ODM services to meet every unique requirement.
4. Bespoke Customization Service
We accept non-standard and export orders, customizing voltage, power, pressure, and more. Reach out to us for any specific needs.
5. Flexibility for Small Orders
Begin with a small trial order to experience the superior quality of our products firsthand.
6. Rapid Delivery
We ensure rapid delivery without compromising the high quality of our products.
7. Full Authorization for Distributors
We provide comprehensive authorization certificates, enabling distributors to confidently sell SANZHI brand products.
Certifications
About us
Sanzhi (Henan) Compressor Co., Ltd is a manufacturer in the production of screw air compressors and screw vacuum pumps, with more than 10 years of experience. The extensive product range includes normal pressure/low-pressure screw air compressors, permanent magnet frequency conversion screw air compressors, two-stage compression screw air compressors, screw air compressors for laser cutting, single-tank mobile screw air compressors, double-tank mobile screw air compressor, electric mobile screw air compressor, diesel mobile screw air compressor, screw vacuum pump, etc.
In production, we are able to achieve the most efficient production by multi-air compressor assembly lines which are lean and modern. With the effort of over 50 employees, we continue to optimize management systems such as ERP to shorten the lead time and deliver qualified products at a fast speed.
In management, our factory passed ISO9001 quality management system certification. We always adhere to the implementation of the stringent quality management system, and strictly implement the standard quality control processes. The outgoing of each machine is an experience of material inspection, production inspection and pre-delivery inspection.
In customer service, on the hand of pre-sales, we offer our customers a professional guide to choosing air equipment for multiple facilities and supply with high customization like its appearance and allocation, and we are even able to create unique products to meet dealer's demand, that is OEM. Meanwhile, for after-sales, we staffed a professional sales & service team for quick response to customers.
We Sanzhi (Henan) Compressor Co., Ltd, devote ourselves to delivering superior and stable products, for building long-term relationships with our customers. Efficient delivery, qualified machine, and worthy price, we are reliable to provide you with a satisfactory compressed air solution.
Our factory is located in Xinzheng City, Henan Province, China. We can pick you up from Xinzheng International Airport to our factory, 30 kilometers in about one hour. Welcome to our company!
Successful Cases
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}