Product Description
Portable Oil Lubricated Twin-Stage Screw Air Compressor Electric Motor Engine Direct Driven Compressor
Detailed Photos
Two-Stage Air End
The air end adopts a large rotor, low-speed design, including 2 independent compression units, high efficiency, low noise, low vibration, and high reliability, each stage of compression ratio is small, with less leakage, and high volume efficiency. Under the same power, 2 heads bear the load, a small bearing hand, and a long service life.
Direct-Connected Rotation Motor
Insulation grade F, protective grade IP55, stable flow rate. Constant load, high efficiency and durability.
Aluminum Intake Valve
The working principle is loaded with electricity, and unloaded with loss of electricity, with the function of unloading and replenishing air, and the function of eliminating the noise of the host. Stable and durable performance, smooth surface and wear-resistant.
Reliable Oil and Air Separator
Vertical tangential cyclone separation structure, complete separation of oil and air, easy replacement of cartridge, and reduced maintenance cost.
Cooling System
Large heat exchange area design effectively prevents high-temperature machines and reduces oil emulsification and coking caused by high-temperature.
Reliable Oil and Air Separator
Vertical tangential cyclone separation structure, complete separation of oil and air, easy replacement of cartridge, and reduced maintenance cost.
High Quality Rubber Tires
The tire specification is 175/65R15 84T, vacuum tires, iron wheels, durable, tread pattern grip, applicable to a variety of complex site conditions.
Safe and Zero Leakage Connection
Sanzhi has abandoned the traditional low-cost hydraulic hose design. Sanzhi uses High-rigid pipes and flexible joint connections, avoiding bursts typically caused by aging, rubber type 0-ring offers a flexible seal preventing leakage.
Intelligent Drive Control
Newly designed intelligent drive controller can do under-voltage supplement for equipment start-up, start-up voltage of 300V-480V can be realized for equipment operation, and protection of the motor, to avoid burning the motor due to low-voltage start-up, eliminating the need for AC contactors, reducing the cost of late maintenance.
Smart Touch Controller
Superior built-in intelligence requires minimal manual operation. A high-precision color electronic screen, clear graphics display, and indication of maintenance information, fault alarms, and safety shutdown alarms.
Product Parameters
| 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) | |
| SZDY75 | 75 | 0.8 | 13.0 | 380 | 50 | 76 | G2″ | 1700 | 2380*1620*1800 |
| 1.0 | 12.0 | ||||||||
| SZDY90 | 90 | 0.8 | 16.0 | 380 | 50 | 76 | G2″ | 1900 | 2380*1620*1800 |
| 1.0 | 15.0 | ||||||||
| 1.4 | 13.0 | ||||||||
| SZDY110 | 110 | 0.8 | 20.0 | 380 | 50 | 80 | G2″ | 2520 | 2700*1496*1918 |
| 1.0 | 17.0 | ||||||||
| 1.3 | 16.0 | ||||||||
| 1.7 | 13.0 | ||||||||
| SZDY132 | 132 | 0.8 | 24.0 | 380 | 50 | 80 | G2″ | 2720 | 2700*1496*1918 |
| 1.0 | 22.0 | ||||||||
| 1.3 | 20.0 | ||||||||
| 1.7 | 18.0 |
Product Structure
Advantages of Big mobile screw air compressor
1. High reliability: the compressor has fewer parts and no wearing parts, so it runs reliably and has a long service life, and the overhaul time can be up to 40,000 to 80,000 hours.
2. Convenient operation and maintenance: high degree of automation, the operator does not have to go through a long time of professional training, can realize unattended operation.
3. Good power balance: it can run smoothly at high speed, characterized by strong gas transmission, fast gas supply, volumetric flow rate almost unaffected by exhaust pressure, and efficiency can be maintained at a wide range of speeds.
4. Strong adaptability: small size, light weight, small footprint, easy to move, very suitable for application in building construction, spraying, pile breaking, sand blasting, urban construction, road construction and other industries.
5. Complete variety series: The complete series of products, the exhaust volume has been from small to large, which meets the needs of different construction conditions. There are diverse structures, suitable for different users.
Packaging & Shipping
Our Advantages
1. Price advantage
Direct to provide customers with ex-factory prices, so that customers are more competitive.
2. Direct deal
All products are supplied directly from the factory and we will offer more cost-effective products.
3. OEM & ODM services
The strong production and management capacity of the factory can provide OEM/ODM service for you.
4. Customised service
We accept non-standard orders, export orders, voltage/power/pressure, etc, which can be customized. If you have demands, please contact us.
5. Accept small order
You can place a small trial order first to test the quality of our products.
6. Fast delivery
High-quality products with timely delivery.
7. Complete authorisation
For distributors, we can provide the full authorization certificate to allow you to sell our SANZHI brand products.
More Products
Company Profile
Sanzhi (ZheJiang ) 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 (ZheJiang ) 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 HangZhou City, ZheJiang Province, China. We can pick you up from HangZhou International Airport to our factory, 30 kilometers in about 1 hour. Welcome to our company!
Certifications
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 2 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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| After-sales Service: | Online Technology Support |
|---|---|
| Warranty: | 1 Year, 2 Years |
| Lubrication Style: | Lubricated |
| Cooling System: | Air Cooling |
| Power Source: | AC Power |
| Cylinder Position: | Vertical |
| Samples: |
US$ 11000/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
|
|
|---|
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What Is the Noise Level of Screw Compressors?
The noise level of screw compressors can vary depending on several factors, including the compressor’s size, design, operating conditions, and the presence of noise-reducing features. Here’s a detailed explanation:
Screw compressors are known for their relatively low noise levels compared to other types of compressors, such as reciprocating compressors. However, the actual noise level can still vary depending on the specific compressor model and its operating parameters.
The noise level of screw compressors is typically measured in decibels (dB) and can range from around 60 dB to 90 dB or higher. It’s important to note that the noise level is logarithmic, meaning that a small increase in decibel level represents a significant increase in perceived noise intensity.
Several factors can influence the noise level of screw compressors:
- 1. Compressor Size and Design: Larger screw compressors tend to produce higher noise levels compared to smaller ones. This is because larger compressors generally have more powerful motors and larger rotating components, which can generate more noise. The design of the compressor, including the type of rotor profiles and the presence of noise-reducing features, can also impact the noise level.
- 2. Operating Conditions: The operating conditions of the compressor, such as the speed of rotation and the discharge pressure, can affect the noise level. Higher speeds and pressures may result in increased noise production. Additionally, the presence of pulsations or vibrations in the system can contribute to noise generation.
- 3. Sound Insulation and Enclosures: Some screw compressors come with built-in sound insulation or enclosures to reduce noise levels. These features help contain the noise within the compressor unit and minimize the propagation of noise to the surrounding environment. Compressors equipped with sound insulation or enclosures generally have lower noise levels compared to open-frame compressors.
- 4. Installation and Surrounding Environment: The installation of the compressor and the characteristics of the surrounding environment can influence the perceived noise level. Factors such as the proximity of the compressor to sensitive areas, the presence of sound-absorbing materials, and the layout of the facility can impact the noise propagation and overall noise perception.
- 5. Maintenance and Wear: Proper maintenance of the compressor, including regular inspection and lubrication of components, can help minimize noise levels. Wear and tear on the compressor’s internal parts can lead to increased noise production, so timely repairs or component replacements are important to maintain optimal performance and minimize noise.
It’s worth noting that noise levels are typically provided by manufacturers as specifications for each compressor model. These specifications can help users select compressors with noise levels that meet their specific requirements or comply with local noise regulations.
In summary, the noise level of screw compressors can range from around 60 dB to 90 dB or higher, depending on factors such as compressor size, design, operating conditions, and the presence of noise-reducing features. Proper installation, maintenance, and the use of sound insulation or enclosures can help minimize noise levels and create a more comfortable and quieter operating environment.
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What Is the Role of Air Dryers in Screw Compressor Systems?
Air dryers play a crucial role in screw compressor systems by removing moisture from the compressed air. Here’s a detailed explanation:
Air contains moisture in the form of water vapor, which can be problematic when compressed. As air is compressed, its temperature rises, causing the moisture to condense into liquid water. This moisture can cause various issues within the compressed air system, including equipment corrosion, decreased efficiency, and compromised air quality.
The role of air dryers in screw compressor systems is to remove this moisture from the compressed air, ensuring dry and clean air for reliable and efficient operation. Here are the key functions and benefits of air dryers:
1. Moisture Removal:
Air dryers extract moisture from the compressed air, reducing its dew point temperature. By lowering the dew point, the risk of condensation and subsequent issues, such as corrosion and water damage to pneumatic equipment, is minimized. Dry air is essential for maintaining the integrity and longevity of the system components.
2. Protection of Pneumatic Equipment:
Moisture in the compressed air can negatively impact pneumatic equipment, including valves, actuators, and air tools. It can cause rust, corrosion, and malfunctioning of these components. By using air dryers to remove moisture, the risk of damage to the equipment is significantly reduced, extending their lifespan and ensuring reliable performance.
3. Prevention of Contamination:
Moisture in compressed air can also lead to the growth of microorganisms, such as bacteria and fungi, within the system. These contaminants can contaminate the air and pose a health risk or cause product spoilage in sensitive applications, such as food and pharmaceutical industries. Air dryers help prevent the growth of these contaminants, ensuring clean and safe compressed air.
4. Enhanced Efficiency:
Dry compressed air improves the efficiency of the overall system. Moisture in the air can cause pressure drop issues, affecting the performance of pneumatic tools and equipment. Dry air allows for optimal operation, reducing energy consumption and enhancing system efficiency.
5. Reduced Maintenance and Downtime:
Moisture-related issues can lead to increased maintenance requirements and system downtime. By removing moisture with air dryers, the need for frequent maintenance and repairs caused by water-related problems is minimized. This helps in reducing costly downtime and improving productivity.
There are different types of air dryers commonly used in screw compressor systems:
a) Refrigerated Air Dryers: These dryers cool the compressed air, causing moisture to condense and separate from the air stream. The condensed water is then drained from the system, leaving behind dry air.
b) Desiccant Air Dryers: These dryers utilize desiccant materials, such as silica gel or activated alumina, to adsorb moisture from the compressed air. The desiccant material undergoes a regeneration process to remove the accumulated moisture, ensuring continuous drying of the compressed air.
c) Membrane Air Dryers: These dryers use permeable membranes to selectively remove moisture from the compressed air. The membranes allow water vapor to pass through while retaining dry air, effectively drying the compressed air stream.
The selection of the appropriate air dryer depends on factors such as the desired level of moisture removal, the specific application requirements, and the operating conditions of the screw compressor system.
In summary, air dryers play a vital role in screw compressor systems by removing moisture from the compressed air. They protect equipment, prevent contamination, enhance efficiency, and reduce maintenance and downtime. By ensuring dry and clean compressed air, air dryers contribute to the longevity, reliability, and optimal performance of the entire compressed air system.
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How Does a Screw Compressor Work?
A screw compressor operates based on a unique rotary positive displacement principle. Here’s a detailed explanation:
Working Principle:
A screw compressor consists of two helical rotors, typically referred to as male and female rotors, that rotate in opposite directions within a housing. The rotors have specially designed profiles that interlock with each other, creating a series of compression chambers as they rotate. The compression chambers gradually reduce in volume as the rotors rotate, compressing the air or gas trapped inside.
Suction Process:
The suction process begins when the rotors start rotating. As they rotate, the helical lobes or threads on the rotors create expanding spaces between them. The expanding spaces draw in the air or gas from the inlet port, allowing it to enter the compression chamber. The suction process continues as the rotors rotate, and the expanding spaces move the air or gas towards the discharge side of the compressor.
Compression Process:
As the air or gas enters the compression chamber, it gets trapped between the interlocking lobes or threads of the rotors. As the rotors continue to rotate, the trapped air or gas is carried along the length of the rotors. The volume of the compression chamber gradually decreases as the lobes or threads of the rotors intermesh, compressing the air or gas. The compression process is continuous and smooth as the air or gas moves from the suction side to the discharge side of the compressor.
Discharge Process:
Once the air or gas reaches the discharge end of the compression chamber, it is pushed towards the outlet port. The compressed air or gas is then released from the compressor through the outlet port to be used for various applications.
Oil-Injected and Oil-Free Variants:
Screw compressors are available in both oil-injected and oil-free variants. In oil-injected screw compressors, a small amount of lubricating oil is injected into the compression chamber. The oil provides lubrication, cooling, and sealing between the rotors, reducing friction and minimizing wear. The oil-injected variant is commonly used in industrial applications where a small amount of oil in the compressed air is acceptable.
Oil-free screw compressors, on the other hand, are designed to operate without the need for oil lubrication. These compressors use specialized rotor coatings, such as PTFE (polytetrafluoroethylene) or other non-stick materials, to reduce friction and eliminate the need for oil. Oil-free screw compressors are preferred in applications that require oil-free and contaminant-free compressed air, such as in the food and beverage, pharmaceutical, and electronics industries.
In summary, a screw compressor works by utilizing interlocking helical rotors to compress air or gas. The rotating rotors draw in the air or gas during the suction process, and as they rotate, the trapped air or gas is compressed within the compression chamber. The compressed air or gas is then discharged from the compressor. Screw compressors are available in oil-injected and oil-free variants, catering to different application requirements.
editor by CX 2024-04-23
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