Product Description
Product description
DM Series Permanent Magnet Variable Frequency Screw Compressor
Permanent magnet Direct Screw Air End. It is a unique new design, which combines the permanent magnet motor and the speed control frequency converter. It couples with the high quality air end, which shows the advanced CHINAMFG technology.
It can provide the unique energy-saving effect and super reliability. There is no motor bearing. The screwing compressor is driven by the permanent magnet motor. There is no consider about the attrition of the gear,pulley,belt, coupling,shaft seal and the moving parts, which leads to the leak or change parts. Meanwhile, it not need to consider the calibritionfor the gear coaxial seal. The high-effect converter technique will reduce the operating costs prodigiously, which can provide you a real excellent technology.
Technical Parameter
| Model | Air delivery (m3/min) |
Power kW |
Noise (DB) |
Outlet diameter | Dimension (mm) |
Weight (kg) |
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| 0.8Mpa | Length | Width | Height | ||||||||
| SEM-10A | 1.01 | 7.5 | 65±2 | RP3/4 | 862 | 662 | 832 | 125 | |||
| SEM-20A | 2.30 | 15 | 70±2 | G3/4 | 1110 | 750 | 1571 | 236 | |||
| SEM-30A | 3.40 | 22 | 70±2 | G1 | 1210 | 800 | 1160 | 301 | |||
| SEM-50A | 6.10 | 37 | 70±2 | G1 1/2 | 1250 | 1571 | 1250 | 460 | |||
Detailed description
1.Rotor
Rotors are asymmetric in profile, backed up by ball bearings and roller bearings. Operates at a low speed, thereby low in abrasion and maintenance expenses, air end is long service life.
2.Control panel
Intelligent microcomputer-based control technology can monitor and control in all aspects the complete machine following your instructions, remote control realizes unattended operation.
3.Oil filter
Rotary filters are applied to completely remove the impurities in the lubricating oil, easy to replace and free of oil impregnate.
4.Air filter
Original imported filter material,high efficiency 3 levels air separator, keep internal cleanliness of the system effectively.
5.Cooler
The cooler is located separately from the internal isolation of the chassis,so that the cooling fans would suck air with normal temperature from outside.Compared to cooling by using the air of 45~65°Cinside the chassis,the cooling fans could save over 30% energy when the temperature of the air outlet decreases 3~8°C.
6.Excellent quality of motors
Professional customized high efficiency permanent magnet motor,Compared to normal motors, Permanent magnet motor more excellent energy saving.protection grade:IP65
7.The air end of compressor is of high efficiency and long life
Excellent CHINAMFG bearings are adopted for compressor air end to better improve their use efficiency,reduce abrasion.and to realize long term operation with no faults,low noise and long life.
Application Industry
Air compressors are widely used in industries to meet customers’ various gas needs,such as Industrial equipment,pipelines, printing service, electric power, metallurgy, oil&gas, power plants, shipbuilding, plastics, painting, textile, blow molding, steel industry, chemical industry, shipyard, machanical etc.
Company Profile
Dehaha Compressor was founded in 1996 with over 150 skilled employees and more than 25 R&D engineersteams ‘ .
We focus on the research & develop,manufacture and energy-saving solutions of screw air compressor to create
value for customers and society.In 2018 our total sales volume approached 15 million US dollars.By over 23 years
enhanced experiences of designing,producing and marketing,today our valued customers are over 130 countries. Germany Standard and 13 years exporting experience help us won more than 50 loyal overseas agents.
Dehaha’s primary businesses focus in following key areas:
Oil-injected rotary screw compressors
Portable screw air compressors
Oil free air compressors
High pressure air compressors
Air treatment equipment
At Dehaha,we earn our customers’ trust and satisfaction by manufacturing the superior quality compressed air
products for all industries.All of our products are designed for reliable performance,easy maintenance,and maximum
energy efficiency.We have sales representatives who can speak English,Spanish,French,and Russian which makes
it easier for our clients from all over the world to interact and negotiate with us.
Dehaha continuously innovates product development and management to meet customers’ demand.The powerful enterprise culture and continuous innovation make CHINAMFG improved rapidly to reach the business principle”Energy Saving First, Mutual Value Shared”. CHINAMFG mission is to be a world-renowned high-end brand,with sustainable development,constantly improving its own value and sharing it with our customers and staff.Committed to offer our customers a silent and energy-saving manufactured products.
Certificates
Our exhibition
Our service
1. 24h/7 after sales support in different languages
2. Follow up the in products in 2 months interval by email or call
3.Guidance of installation and commissioning on site can be provided by factory-trained technicians
4. Technical training for customers in CHINAMFG air compressor factory or working site.
5. plenty of drginal spare parts with proven quality are all available from our stocks in Jianhgsu .
6. All kinds of technical documents in different languges.
FAQ
1.Why customer choose us?
DHH CHINAMFG ZheJiang CO.,LTD.with 23 years old history,we are specialized in Rotary Screw Air Compressor.Germany Standard and 13 years exporting experience help us won more than 30 loyal foreign agents.We warmly welcome your small trial order for quality or market test.
2.Are you a manufacturer or trading company?
We are professional manufacturer with big modern factory in HangZhou,China,with professional design team.Both OEM & ODM service can be accepted.
3.Where is your factory located? How can I visit there?
Our factory is located in HangZhou City, ZheJiang Province, China. We can pick up you from ZheJiang , it’s about 1 hour from ZheJiang Xihu (West Lake) Dis. Airport to our factory. Warmly welcome to visit us!
4.What’s your delivery time?
380V 50HZ we can delivery the goods within 14 days. Other electricity or other color we will delivery within 22 days,if urgently order,pls contact our sales in advance.
5.How long is your air compressor warranty?
One year for the whole machine and 2 years for screw air end, except consumable spare parts and we can provide some spare parts of the machines.
6.How does your factory do regarding quality control?
Quality is everything. we always attach great importance to quality controlling from the very beginning to the very end. Our factory has gained ISO9001:2015 authentication and CE certificate.
7.How long could your air compressor be used?
Generally, more than 10 years.
8. What’s payment term?
T/T,L/C,D/P,Western Union,Paypal,Credit Card,and etc.Also we could accept USD, RMB, Euro and other currency.
9.How about your customer service?
24 hours on-line service available.48 hours problem solved promise.
10.How about your after-sales service?
(1) Provide customers with installation and commissioning online instructions.
(2) Well-trained engineers available to overseas service.
(3) CHINAMFG agents and after service available.
| After-sales Service: | Online Support |
|---|---|
| Warranty: | 24montrhs |
| Lubrication Style: | Lubricated |
| Cooling System: | Air Cooling |
| Power Source: | AC Power |
| Cylinder Position: | Vertical |
| Customization: |
Available
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How are air compressors used in the food and beverage industry?
Air compressors play a vital role in the food and beverage industry, providing a reliable source of compressed air for various applications. Here are some common uses of air compressors in this industry:
1. Packaging and Filling:
Air compressors are extensively used in packaging and filling operations in the food and beverage industry. Compressed air is utilized to power pneumatic systems that control the movement and operation of packaging machinery, such as filling machines, capping machines, labeling equipment, and sealing devices. The precise and controlled delivery of compressed air ensures accurate and efficient packaging of products.
2. Cleaning and Sanitization:
Air compressors are employed for cleaning and sanitization purposes in food and beverage processing facilities. Compressed air is used to operate air-powered cleaning equipment, such as air blowguns, air-operated vacuum systems, and air knives. It helps remove debris, dust, and contaminants from production lines, equipment, and hard-to-reach areas. Additionally, compressed air is used for drying surfaces after cleaning and for applying sanitizing agents.
3. Cooling and Refrigeration:
In the food and beverage industry, air compressors are utilized in cooling and refrigeration systems. Compressed air is used to drive air compressors in refrigeration units, enabling the circulation of refrigerants and maintaining optimal temperatures for food storage and preservation. The controlled airflow provided by the compressors facilitates efficient cooling and refrigeration processes.
4. Aeration and Mixing:
Air compressors are used for aeration and mixing applications in the food and beverage industry. Compressed air is introduced into processes such as fermentation, dough mixing, and wastewater treatment. It helps in promoting oxygen transfer, enhancing microbial activity, and facilitating proper mixing of ingredients or substances, contributing to the desired quality and consistency of food and beverage products.
5. Pneumatic Conveying:
In food processing plants, air compressors are employed for pneumatic conveying systems. Compressed air is used to transport bulk materials such as grains, powders, and ingredients through pipes or tubes. It enables the gentle and efficient movement of materials without the need for mechanical conveyors, reducing the risk of product damage or contamination.
6. Quality Control and Testing:
Air compressors are utilized in quality control and testing processes within the food and beverage industry. Compressed air is used for leak testing of packaging materials, containers, and seals to ensure product integrity. It is also employed for spraying air or gases during sensory analysis and flavor testing.
7. Air Agitation:
In certain food and beverage production processes, air compressors are used for air agitation. Compressed air is introduced into tanks, mixing vessels, or fermentation tanks to create turbulence and promote mixing or chemical reactions. It aids in achieving consistent product quality and uniform distribution of ingredients or additives.
It is important to note that air compressors used in the food and beverage industry must meet strict hygiene and safety standards. They may require specific filtration systems, oil-free operation, and compliance with food safety regulations to prevent contamination or product spoilage.
By utilizing air compressors effectively, the food and beverage industry can benefit from improved productivity, enhanced product quality, and efficient processing operations.
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How does the horsepower of an air compressor affect its capabilities?
The horsepower of an air compressor is a crucial factor that directly impacts its capabilities and performance. Here’s a closer look at how the horsepower rating affects an air compressor:
Power Output:
The horsepower rating of an air compressor indicates its power output or the rate at which it can perform work. Generally, a higher horsepower rating translates to a greater power output, allowing the air compressor to deliver more compressed air per unit of time. This increased power output enables the compressor to operate pneumatic tools and equipment that require higher air pressure or greater airflow.
Air Pressure:
The horsepower of an air compressor is directly related to the air pressure it can generate. Air compressors with higher horsepower ratings have the capacity to produce higher air pressures. This is particularly important when operating tools or machinery that require specific air pressure levels to function optimally. For example, heavy-duty pneumatic tools like jackhammers or impact wrenches may require higher air pressure to deliver the necessary force.
Air Volume:
In addition to air pressure, the horsepower of an air compressor also affects the air volume or airflow it can provide. Higher horsepower compressors can deliver greater volumes of compressed air, measured in cubic feet per minute (CFM). This increased airflow is beneficial when using pneumatic tools that require a continuous supply of compressed air, such as paint sprayers or sandblasters.
Duty Cycle:
The horsepower rating of an air compressor can also influence its duty cycle. The duty cycle refers to the amount of time an air compressor can operate continuously before it needs to rest and cool down. Higher horsepower compressors often have larger and more robust components, allowing them to handle heavier workloads and operate for longer periods without overheating. This is particularly important in demanding applications where continuous and uninterrupted operation is required.
Size and Portability:
It’s worth noting that the horsepower rating can also affect the physical size and portability of an air compressor. Higher horsepower compressors tend to be larger and heavier due to the need for more substantial motors and components to generate the increased power output. This can impact the ease of transportation and maneuverability, especially in portable or mobile applications.
When selecting an air compressor, it is essential to consider the specific requirements of your intended applications. Factors such as desired air pressure, airflow, duty cycle, and portability should be taken into account. It’s important to choose an air compressor with a horsepower rating that aligns with the demands of the tools and equipment you plan to operate, ensuring optimal performance and efficiency.
Consulting the manufacturer’s specifications and guidelines can provide valuable information on how the horsepower rating of an air compressor corresponds to its capabilities and suitability for different tasks.
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What maintenance is required for air compressors?
Maintaining air compressors is essential to ensure their optimal performance, longevity, and safe operation. Regular maintenance helps prevent breakdowns, improves efficiency, and reduces the risk of accidents. Here are some key maintenance tasks for air compressors:
1. Regular Inspection: Perform visual inspections of the air compressor to identify any signs of wear, damage, or leaks. Inspect the compressor, hoses, fittings, and connections for any abnormalities. Pay attention to oil leaks, loose bolts, and worn-out components.
2. Oil Changes: If your air compressor has an oil lubrication system, regular oil changes are crucial. Follow the manufacturer’s recommendations for the frequency of oil changes and use the recommended oil type. Dirty or degraded oil can impact compressor performance and lead to premature wear.
3. Air Filter Cleaning or Replacement: Clean or replace the air filter regularly to ensure proper air intake and prevent contaminants from entering the compressor. Clogged or dirty filters can restrict airflow and reduce efficiency.
4. Drain Moisture: Air compressors produce moisture as a byproduct of the compression process. Accumulated moisture in the tank can lead to rust and corrosion. Drain the moisture regularly from the tank to prevent damage. Some compressors have automatic drains, while others require manual draining.
5. Belt Inspection and Adjustment: If your compressor has a belt-driven system, inspect the belts for signs of wear, cracks, or tension issues. Adjust or replace the belts as necessary to maintain proper tension and power transmission.
6. Tank Inspection: Inspect the compressor tank for any signs of corrosion, dents, or structural issues. A damaged tank can be hazardous and should be repaired or replaced promptly.
7. Valve Maintenance: Check the safety valves, pressure relief valves, and other valves regularly to ensure they are functioning correctly. Test the valves periodically to verify their proper operation.
8. Motor and Electrical Components: Inspect the motor and electrical components for any signs of damage or overheating. Check electrical connections for tightness and ensure proper grounding.
9. Keep the Area Clean: Maintain a clean and debris-free area around the compressor. Remove any dirt, dust, or obstructions that can hinder the compressor’s performance or cause overheating.
10. Follow Manufacturer’s Guidelines: Always refer to the manufacturer’s manual for specific maintenance instructions and recommended service intervals for your air compressor model. They provide valuable information on maintenance tasks, lubrication requirements, and safety precautions.
Regular maintenance is vital to keep your air compressor in optimal condition and extend its lifespan. It’s also important to note that maintenance requirements may vary depending on the type, size, and usage of the compressor. By following a comprehensive maintenance routine, you can ensure the reliable operation of your air compressor and maximize its efficiency and longevity.
editor by CX 2023-11-06
China Standard 915 Cfm Electric Type Oil Free Less Oilless Screw Air Compressor portable air compressor
Product Description
Industrial Silent/Mute Medical Dry Oil Free Oilless Direct Drive Rotary Double Screw Type Air Compressor Advantages
1.Clean air 1, China
Our factory is located in No. 366, YangzhuangBang Street, Pingxing Rd., Xindai Town, HangZhou, ZHangZhoug Province, China
Q3: Warranty terms of your machine?
A3: Two years warranty for the machine and technical support according to your needs.
Q4: Will you provide some spare parts of the machines?
A4: Yes, of course.
Q5: How long will you take to arrange production?
A5: 380V 50HZ we can delivery the goods within 10 days. Other electricity or other color we will delivery within 22 days
Q6: Can you accept OEM orders?
A6: Yes, with professional design team, OEM orders are highly welcome
| Lubrication Style: | Oil-free |
|---|---|
| Cooling System: | Air Cooling and Water Cooling |
| Power Source: | AC Power |
| Customization: |
Available
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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What is the impact of humidity on compressed air quality?
Humidity can have a significant impact on the quality of compressed air. Compressed air systems often draw in ambient air, which contains moisture in the form of water vapor. When this air is compressed, the moisture becomes concentrated, leading to potential issues in the compressed air. Here’s an overview of the impact of humidity on compressed air quality:
1. Corrosion:
High humidity in compressed air can contribute to corrosion within the compressed air system. The moisture in the air can react with metal surfaces, leading to rust and corrosion in pipes, tanks, valves, and other components. Corrosion not only weakens the structural integrity of the system but also introduces contaminants into the compressed air, compromising its quality and potentially damaging downstream equipment.
2. Contaminant Carryover:
Humidity in compressed air can cause carryover of contaminants. Water droplets formed due to condensation can carry particulates, oil, and other impurities present in the air. These contaminants can then be transported along with the compressed air, leading to fouling of filters, clogging of pipelines, and potential damage to pneumatic tools, machinery, and processes.
3. Decreased Efficiency of Pneumatic Systems:
Excessive moisture in compressed air can reduce the efficiency of pneumatic systems. Water droplets can obstruct or block the flow of air, leading to decreased performance of pneumatic tools and equipment. Moisture can also cause problems in control valves, actuators, and other pneumatic devices, affecting their responsiveness and accuracy.
4. Product Contamination:
In industries where compressed air comes into direct contact with products or processes, high humidity can result in product contamination. Moisture in compressed air can mix with sensitive products, leading to quality issues, spoilage, or even health hazards in industries such as food and beverage, pharmaceuticals, and electronics manufacturing.
5. Increased Maintenance Requirements:
Humidity in compressed air can increase the maintenance requirements of a compressed air system. Moisture can accumulate in filters, separators, and other air treatment components, necessitating frequent replacement or cleaning. Excessive moisture can also lead to the growth of bacteria, fungus, and mold within the system, requiring additional cleaning and maintenance efforts.
6. Adverse Effects on Instrumentation:
Humidity can adversely affect instrumentation and control systems that rely on compressed air. Moisture can disrupt the accuracy and reliability of pressure sensors, flow meters, and other pneumatic instruments, leading to incorrect measurements and control signals.
To mitigate the impact of humidity on compressed air quality, various air treatment equipment is employed, including air dryers, moisture separators, and filters. These devices help remove moisture from the compressed air, ensuring that the air supplied is dry and of high quality for the intended applications.
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What safety precautions should be taken when working with compressed air?
Working with compressed air requires adherence to certain safety precautions to prevent accidents and ensure the well-being of individuals involved. Here are some important safety measures to consider:
1. Personal Protective Equipment (PPE):
Wear appropriate PPE, including safety goggles or a face shield to protect eyes from flying debris or particles, hearing protection to reduce noise exposure, and gloves to safeguard hands from potential hazards.
2. Compressed Air Storage:
Avoid storing compressed air in containers that are not designed for this purpose, such as soda bottles or makeshift containers. Use approved and properly labeled air storage tanks or cylinders that can handle the pressure and are regularly inspected and maintained.
3. Pressure Regulation:
Ensure that the air pressure is regulated to a safe level suitable for the equipment and tools being used. High-pressure air streams can cause serious injuries, so it is important to follow the manufacturer’s recommendations and never exceed the maximum allowable pressure.
4. Air Hose Inspection:
Regularly inspect air hoses for signs of damage, such as cuts, abrasions, or leaks. Replace damaged hoses immediately to prevent potential accidents or loss of pressure.
5. Air Blowguns:
Exercise caution when using air blowguns. Never direct compressed air towards yourself or others, as it can cause eye injuries, hearing damage, or dislodge particles that may be harmful if inhaled. Always point blowguns away from people or any sensitive equipment or materials.
6. Air Tool Safety:
Follow proper operating procedures for pneumatic tools. Ensure that tools are in good working condition, and inspect them before each use. Use the appropriate accessories, such as safety guards or shields, to prevent accidental contact with moving parts.
7. Air Compressor Maintenance:
Maintain air compressors according to the manufacturer’s guidelines. Regularly check for leaks, clean or replace filters, and drain moisture from the system. Proper maintenance ensures the safe and efficient operation of the compressor.
8. Training and Education:
Provide adequate training and education to individuals working with compressed air. Ensure they understand the potential hazards, safe operating procedures, and emergency protocols. Encourage open communication regarding safety concerns and implement a culture of safety in the workplace.
9. Lockout/Tagout:
When performing maintenance or repairs on compressed air systems, follow lockout/tagout procedures to isolate the equipment from energy sources and prevent accidental startup. This ensures the safety of the individuals working on the system.
10. Proper Ventilation:
Ensure proper ventilation in enclosed areas where compressed air is used. Compressed air can displace oxygen, leading to a potential risk of asphyxiation. Adequate ventilation helps maintain a safe breathing environment.
By adhering to these safety precautions, individuals can minimize the risks associated with working with compressed air and create a safer work environment.
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What is the role of air compressor tanks?
Air compressor tanks, also known as receiver tanks or air receivers, play a crucial role in the operation of air compressor systems. They serve several important functions:
1. Storage and Pressure Regulation: The primary role of an air compressor tank is to store compressed air. As the compressor pumps air into the tank, it accumulates and pressurizes the air. The tank acts as a reservoir, allowing the compressor to operate intermittently while providing a steady supply of compressed air during periods of high demand. It helps regulate and stabilize the pressure in the system, reducing pressure fluctuations and ensuring a consistent supply of air.
2. Condensation and Moisture Separation: Compressed air contains moisture, which can condense as the air cools down inside the tank. Air compressor tanks are equipped with moisture separators or drain valves to collect and remove this condensed moisture. The tank provides a space for the moisture to settle, allowing it to be drained out periodically. This helps prevent moisture-related issues such as corrosion, contamination, and damage to downstream equipment.
3. Heat Dissipation: During compression, air temperature increases. The air compressor tank provides a larger surface area for the compressed air to cool down and dissipate heat. This helps prevent overheating of the compressor and ensures efficient operation.
4. Pressure Surge Mitigation: Air compressor tanks act as buffers to absorb pressure surges or pulsations that may occur during compressor operation. These surges can be caused by variations in demand, sudden changes in airflow, or the cyclic nature of reciprocating compressors. The tank absorbs these pressure fluctuations, reducing stress on the compressor and other components, and providing a more stable and consistent supply of compressed air.
5. Energy Efficiency: Air compressor tanks contribute to energy efficiency by reducing the need for the compressor to run continuously. The compressor can fill the tank during periods of low demand and then shut off when the desired pressure is reached. This allows the compressor to operate in shorter cycles, reducing energy consumption and minimizing wear and tear on the compressor motor.
6. Emergency Air Supply: In the event of a power outage or compressor failure, the stored compressed air in the tank can serve as an emergency air supply. This can provide temporary air for critical operations, allowing time for maintenance or repairs to be carried out without disrupting the overall workflow.
Overall, air compressor tanks provide storage, pressure regulation, moisture separation, heat dissipation, pressure surge mitigation, energy efficiency, and emergency backup capabilities. They are vital components that enhance the performance, reliability, and longevity of air compressor systems in various industrial, commercial, and personal applications.
editor by CX 2023-10-19