Introducing the meticulously engineered Special Screw Air Compressor from Sanzhi (Henan) Compressor Co., Ltd., specialized for Powder Conveying applications. This Closed Type Low Pressure Stationary Screw Air Compressor stands as the quintessential solution for a multitude of industries, including Cement Mixing Plants, Flour Mills, Coal Ash handling, and Mineral Powder processing. Boasting a versatile range of power specifications such as 11KW, 22KW, 37KW, 45KW, 55KW, 75KW, 90KW, 110KW, and 132KW, this compressor guarantees robust performance and unmatched efficiency, catering to all your industrial demands with precision and reliability.
Why choose Sanzhi dust special compressor?
The primary function of the Sanzhi Low Pressure Screw Air Compressor, specifically designed for dust conveying, is to efficiently transport materials like dust, cement, and various other particles. Operating at a working pressure range of 0.15-0.4Mpa, this remarkable machine features a direct drive system, a large head, and low rotational speed for optimal performance. It incorporates a German-engineered special oil-air separation structure, ensuring minimal noise and vibrations. Installation is a breeze with no need for any foundational setup. The compressed air moves at a swift rate with an oil content of less than 2PPM, guaranteeing the necessary air volume. Additionally, the radiator is designed without an after-cooling device, as moisture in materials like cement and flour can lead to coking and caking, severely impacting the conveying process.
Sanzhi's specially engineered low-pressure air compressor for dust conveying is versatile and highly efficient, ideal for applications spanning cement, mineral powder, coal ash unloading, textile fermentation, and more. This compressor is a paragon of energy saving and efficiency. For instance, unloading a 9.6-meter cement tanker using the tanker's own device takes over an hour and a half, consuming significant fuel. In stark contrast, the same task can be completed in just 40 minutes with a 37KW air compressor, markedly enhancing efficiency while conserving energy and reducing costs.
Direct-Connected Rotation Motor
Insulation grade F, protective grade IP55, ensures a stable flow rate. Embrace constant load operations with unparalleled efficiency and remarkable durability.
German Technology Air End
Our air end boasts a large rotor with a low-speed design, delivering exceptional efficiency, minimal noise, low vibration, and outstanding reliability. Benefit from reduced leakage and unparalleled volume efficiency.
Smart Button Screen
Experience intuitive and clear functionalities, effortless operations, swift response times, vibrant display colors, and straightforward maintenance.
Cooling System
Designed with an expansive heat exchange area, our cooling system effectively prevents high-temperature issues, reducing oil emulsification and coking from elevated temperatures.
Reliable Oil and Air Separator
Featuring a vertical tangential cyclone separation structure, this separator ensures thorough oil and air separation, facilitating easy cartridge replacement and significantly lowering maintenance costs.
Safe and Zero Leakage Connection
Sanzhi introduces high-rigid pipes and flexible joint connections, replacing traditional low-cost hydraulic hoses to prevent bursts caused by aging. The rubber type O-ring provides a flexible seal that ensures zero leakage.
Aluminum Intake Valve
Engineered to load with electricity and unload upon power loss, this valve includes air replenishment and noise elimination functions. It delivers stable and durable performance with a smooth, wear-resistant surface.
Oil Viewing Mirror
Made from PMMA material, this mirror offers superior transparency, high temperature resistance, and minimal color change. It allows visual monitoring of oil levels and lubrication, guaranteeing timely replacements to avoid equipment damage.
Excellent Air Filter
Our air filter offers outstanding air purification with three-stage filtration, ensuring a pristine air system that meets standard emissions. It efficiently removes substantial steam and fine dust particles.
Oil Filter
This filter eliminates impurities from the lubricating oil, enhancing lubrication for the compressor head and extending the air compressor's lifespan.
High-Quality Soundproof Cotton
Our compact noise reduction housing, combined with high-quality soundproof cotton, effectively eliminates vibration during operation and significantly enhances noise reduction.
| 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
Our Electric Motor Low Pressure Screw Air Compressor is meticulously engineered for relentless performance. This powerhouse can handle 24-hour non-stop operation and endure up to an astonishing 3 million start/stop cycles, ensuring unparalleled reliability.
Intelligent Control
Experience the pinnacle of safety and reliability with our state-of-the-art electrical system. Coupled with an intuitive, user-friendly computer intelligent control, it promises a flawless operational experience.
Easy Use
Designed with user convenience in mind, its straightforward structure guarantees effortless installation, seamless operation, and hassle-free maintenance, allowing you to focus on what truly matters.
Energy Saving
Achieve remarkable energy efficiency with enhanced work performance, substantially reducing energy consumption. Save an impressive 30-50% on costs, making it both economically and environmentally beneficial.
High-Temperature Shutdown Protection
Our built-in high-temperature shutdown mechanism automatically activates to protect the equipment from overheating. This critical feature safeguards against potential safety hazards and prevents equipment damage, ensuring continuous, safe operation.
1. Unbeatable Price Advantage
We offer our customers direct factory prices, ensuring they stay highly competitive in today's market.
2. Direct Transactions
Our products are delivered straight from the factory, providing you with more cost-effective solutions.
3. OEM & ODM Services
With our robust production and management capabilities, we offer comprehensive OEM/ODM services tailored specifically to your requirements.
4. Customized Solutions
We accommodate non-standard, export, and custom requests for voltage, power, pressure, and more. Contact us for bespoke solutions.
5. Small Orders Welcome
Begin with a small trial order to fully appreciate the exceptional quality of our products.
6. Swift Delivery
We guarantee the timely delivery of our high-quality products, ensuring your satisfaction.
7. Comprehensive Authorization
We provide full authorization certificates for distributors, empowering you to confidently sell SANZHI brand products.
About us
Sanzhi (Henan) Compressor Co., Ltd. stands as a beacon of excellence in manufacturing, specializing in high-performance screw air compressors and vacuum pumps for over a decade. Our expansive product range includes normal and low-pressure screw air compressors, as well as cutting-edge models like permanent magnet frequency conversion compressors, two-stage compression units, laser cutting compressors, and versatile mobile screw air compressors available in both single-tank and double-tank formats. Additionally, we offer robust electric and diesel mobile screw air compressors and advanced screw vacuum pumps.
Our production capabilities are second to none, featuring state-of-the-art multi-air compressor assembly lines designed for maximum efficiency and modernity. With a dedicated workforce of over 50 professionals, we continually optimize our management systems, including ERP, to drastically reduce lead times and ensure the swift delivery of exceptional products.
Our rigorous management standards have earned us the ISO9001 quality management system certification. We are steadfast in our commitment to a stringent quality management system, adhering to standardized quality control protocols. Each machine undergoes thorough material, production, and pre-delivery inspections to guarantee unparalleled quality.
Our customer service is unmatched, with a pre-sales team offering expert consultations to help customers choose the ideal air equipment, customizing appearance and configuration to suit specific needs. We excel in crafting unique OEM products tailored to dealer specifications. Our after-sales support team is highly responsive, ensuring prompt and professional service to address any customer inquiries or issues.
At Sanzhi (Henan) Compressor Co., Ltd., we are dedicated to providing superior, reliable products and fostering long-term customer relationships. With our commitment to efficient delivery, premium machines, and competitive prices, we are your trusted partner for outstanding compressed air solutions.
Our factory is strategically located in Xinzheng City, Henan Province, China. We offer convenient pick-up services from Xinzheng International Airport, just a short 30-kilometer drive, making it easy for you to visit our facility. We eagerly anticipate welcoming you to our company!
Explore Our Successful Cases
Comprehensive Frequently Asked Questions (FAQ)
Q1. Are you a trading company or a manufacturer?
A: We proudly stand as a distinguished manufacturer of screw air compressors, boasting over a decade of unparalleled expertise.
Q2. How do you ensure quality control?
A: 1. We conduct rigorous inspections of all raw materials.
2. We exercise meticulous control over every installation procedure.
3. Every unit undergoes at least 5 hours of continuous, stringent testing before shipment.
Q3. What information do I need to provide to get the most suitable machine?
1. Desired air delivery capacity (Units: CFM or m³/Min).
2. Required working pressure (Units: PSI, Bar, or Mpa).
3. Voltage and frequency specifications for your region (Units: V/Hz).
4. Any additional accessories needed, such as an air tank, filters, and/or air dryers.
Provide these details, and we will craft the perfect solution tailored to your needs!
Q4. What are the general unit conversions?
1 Bar = 0.1 Mpa = 14.5 PSI.
1 m³/min = 35.32 CFM.
1 KW = 1.34 HP.
Q5. What voltages are available for the air compressors?
A: Sanzhi offers a range of voltages including 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, 440v/60hz/3p, and can customize to meet your specific requirements.
Q6. What is your standard delivery time?
A: For standard voltage units, it is typically 15 working days after order confirmation. For non-standard requirements, please contact our sales team for detailed information.
Q7. What are your payment terms?
A: 30% T/T in advance, 40% T/T before shipment, and 30% T/T upon presentation of B/L copy. We accept both USD and RMB.
Q8. What is your warranty policy?
A: We offer a one-year warranty for the entire machine and a two-year warranty for the screw air compressor, excluding consumable parts.
Q9. How should maintenance be conducted?
A: Initial maintenance is required after 500 hours of operation. Subsequently, regular maintenance should be performed every 2000-3000 hours, adjusted based on the operational environment.
Q10. Can your machines operate in high-temperature environments?
A: Absolutely! Our machines are engineered to perform in temperature ranges from -20° to 45°C (-4ºF to 113ºF).
Q11. Do you provide OEM services?
A: Certainly! With our skilled design team, we warmly welcome both OEM & ODM orders.
Q12. What is the lifespan of your air compressors?
A: Our air compressors typically have a lifespan exceeding 10 years.
Q13. Will you supply spare parts for the machines?
A: Yes, we certainly will.
Q14. What after-sales services do you offer?
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