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Quanwei Machinery Group (Jiangsu) Co., Ltd. is referred to as Quanwei Machinery for short. The company's main brands are Quanwei and Yongying. Quanwei Machinery Factory was established in 1986 and is located in Lingya District, Kaohsiung City, Taiwan. It is a comprehensive screw compressor manufacturer with research and development, design, production and sales. Quan Wei established a company in Suzhou in 2013, with a factory building of 28,000 square meters, including large-scale production workshops, showrooms and quality testing laboratories.
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Quanwei Machinery Group (Jiangsu) Co., Ltd. is referred to as Quanwei Machinery for short. The company's main brands are Quanwei and Yongying. Quanwei Machinery Factory was established in 1986 and is located in Lingya District, Kaohsiung City, Taiwan. It is a comprehensive screw compressor manufacturer with research and development, design, production and sales.
  • 30 2026.04
    May Day Holiday | Quanwei Walks with Every Striver, Interpreting Original Aspiration with Craftsmanship

        Spring returns to the earth, and labor shapes the soul. When the wind of May blows through the windows of the workshop, and the roaring machines play the movement of struggle, we usher in a glorious festival belonging to every worker - International Labor Day. On this day of paying tribute to struggle and praising craftsmanship, Quanwei Group extends the highest respect to all workers who stick to their posts and work silently, and also says to every partner who walks side by side with Quanwei: You have worked hard, happy holiday!     Labor creates value, and craftsmanship achieves extraordinary results. In Quanwei's production workshop, there is a group of craftsmen who adhere to their original aspirations. They polish the details of each air compressor with the temperature of their fingertips; control the quality of each production process with a rigorous attitude. From the precision assembly of core components to the commissioning and testing of the whole machine, from the repeated tackling of problems in the R&D laboratory to the timely response at the after-sales site, every Quanwei person is in their own position, interpreting the responsibility and mission of workers with concentration and perseverance.     We deeply understand that every stable running Quanwei air compressor carries the sweat and expectations of countless workers; every efficient and convenient air use experience is inseparable from the hard work of the strivers behind it. In the plastic and rubber workshop, operators stick to their posts and water the fruits of production with their hands, while Quanwei air compressors always accompany them, providing stable and energy-saving air sources to escort their efficient operation; at overseas exhibition sites, salesmen are busy, conveying brand strength with professionalism and making Quanwei's craftsmanship known to the world; the R&D team studies day and night, breaks through technical bottlenecks with innovation, and injects new vitality into the industry's development.     Struggle has no boundaries, and warmth walks together. Quanwei's growth has never been a lonely battle, but the result of every worker working together with one heart and one mind. We cherish the efforts of every employee, respect every ordinary perseverance, and always integrate humanistic care into every detail of the enterprise's development - whether it is greetings and care during festivals, or support and growth at work, we always stand side by side with every striver, making efforts seen and gains echoed.     This May Day, some people rush to the mountains and seas to enjoy the comfort of the holiday; some people stick to their posts to continue the chapter of struggle. Whether it is a craftsman who sticks to the front line of production, an envoy who rushes to the forefront of the market, a technical personnel who is deeply engaged in R&D, or a logistics partner who serves silently, every worker is worthy of being remembered, and every struggle is worthy of being praised.     Craftsmanship builds dreams, and labor is glorious. On the occasion of this May Day, Quanwei Group pays tribute to all workers again! In the future, we will continue to adhere to the original aspiration with craftsmanship, fulfill the mission with quality, polish better air compressor products, provide more intimate services, walk with every striver, win-win with every partner, create a better future with labor, build an industry benchmark with craftsmanship, and let Quanwei's warmth and strength accompany every worker to a farther journey.    

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  • The difference between variable frequency and industrial frequency air compressors
    12 2024.07
    The difference between variable frequency and industrial frequency air compressors

    In recent years, variable frequency air compressors have played an important role in the air compressor market due to their good energy saving properties. Even so, many users still don't know the difference between a variable frequency air compressor and a power frequency air compressor. In fact, the main differences between variable frequency air compressors and industrial frequency air compressors are as follows: 1. Stable air pressure.The variable frequency air compressor takes advantage of the stepless speed regulation feature of the frequency converter. It can start smoothly through the controller or the PID regulator inside the frequency converter. It can quickly adjust the response to situations where the air consumption fluctuates greatly. 2. No impact at startup.The frequency converter itself has the function of a soft starter. The maximum starting current is within 1.2 times of the rated current, while power frequency starting is generally more than 6 times of the rated current. Compared with variable frequency, the starting impact is very small. This impact not only on the power grid, but also on the entire mechanical system will be greatly reduced. 3. Variable flow control.The frequency converter of the variable frequency air compressor adjusts the motor speed in real time according to the actual air consumption to control the exhaust volume. Therefore, the variable frequency air compressor can work in a relatively wide range of exhaust volume. 4. AC power supply has good voltage adaptability Due to the over-modulation technology used in the frequency converter, when the AC power supply voltage is slightly low, it can still output sufficient torque to drive the motor; when the voltage is slightly higher, it will not cause the output voltage to the motor to be too high; For the occasion of self-generation, variable frequency drive can better show its advantages; According to the characteristics of the motor VF (the variable frequency air compressor operates below the rated voltage in the energy-saving state), the effect is obvious for sites with low grid voltage. 5. Low noise.Most of the working conditions of the frequency conversion system are lower than the rated speed. The mechanical noise and wear of the host are reduced, effectively extending the maintenance time and service life.

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  • The Causes of Insufficient Heat Dissipation in Permanent Magnet Variable Frequency Air Compressors
    03 2023.10
    The Causes of Insufficient Heat Dissipation in Permanent Magnet Variable Frequency Air Compressors

    Permanent magnet variable frequency air compressors are widely used in various industries for their energy efficiency and superior performance.  However, one common issue encountered with these machines is insufficient heat dissipation.  In this article, we will delve into the reasons behind this problem and explore potential solutions. 1.  Inadequate Cooling System Design: The cooling system design plays a crucial role in maintaining optimal temperature levels in permanent magnet variable frequency air compressors.  If the cooling system is not appropriately designed or if it lacks the necessary components, such as fans, heat sinks, or radiators, the dissipation of heat can be compromised.  This can lead to overheating of the compressor and a decline in its overall performance.   2.  Insufficient Airflow: Insufficient airflow around the compressor can hinder heat dissipation.  This can occur due to improper installation or obstruction of air vents.  When the airflow is limited, the heat generated by the compressor cannot be effectively carried away, causing the temperature to rise rapidly.  Regular maintenance and ensuring proper ventilation can help address this issue.   3.  Inadequate Lubrication: Lubrication is essential for the smooth operation of the compressor.  Inadequate lubrication can cause increased friction and heat generation, leading to poor heat dissipation.  It is crucial to follow the manufacturer's guidelines regarding lubrication frequency and ensure the use of high-quality lubricants to minimize friction and maintain optimal heat dissipation.   4.  Overloading or Continuous Operation: Overloading the compressor or running it continuously beyond its specified capacity can significantly impact heat dissipation.  When the compressor is continuously subjected to heavy loads, it generates excessive heat that surpasses its cooling capacity.  This can result in overheating and potential damage to the compressor.  Adhering to the recommended load limits and allowing the compressor to rest periodically can help prevent heat buildup.   5.  Environmental Factors: The environment in which the compressor operates can also affect its heat dissipation capabilities.  High ambient temperatures, poor air quality, or dusty surroundings can impede the cooling process.  Regular cleaning of the compressor, ensuring proper ventilation, and keeping the surrounding area clean can help mitigate these environmental factors.   Conclusion: Insufficient heat dissipation in permanent magnet variable frequency air compressors can lead to reduced efficiency, increased energy consumption, and potential damage to the equipment.  By addressing the factors mentioned above, such as improving cooling system design, ensuring proper airflow, lubrication, load management, and maintaining a suitable operating environment, users can enhance heat dissipation efficiency and prolong the lifespan of their compressors.  Regular maintenance and adherence to manufacturer recommendations are crucial to ensure optimal performance and reliability.

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  • Troubleshooting Low Temperature Startup Issues in Screw Air Compressors
    04 2023.10
    Troubleshooting Low Temperature Startup Issues in Screw Air Compressors

    Screw air compressors are widely used in various industries due to their efficiency and reliability.  However, in cold weather conditions, these machines may encounter difficulties in starting up.  In this article, we will explore the reasons behind the low temperature startup issues in screw air compressors and provide some troubleshooting tips. 1.  Insufficient Lubrication: One common cause of low temperature startup problems in screw air compressors is inadequate lubrication.  In cold temperatures, the oil viscosity increases, making it difficult for the lubricant to flow smoothly.  This can result in excessive friction and resistance, preventing the compressor from starting.  To address this issue, it is crucial to use a lubricant specifically designed for low-temperature applications.  These lubricants have lower viscosity and can flow easily, ensuring proper lubrication and smooth startup even in cold conditions.   2.  Moisture Accumulation: Another factor that affects the startup of screw air compressors in low temperatures is the accumulation of moisture.  Cold air can condense moisture, leading to the formation of ice or frost inside the compressor.  This can cause blockages and hinder the movement of components, resulting in startup issues.  To prevent moisture accumulation, it is essential to install a moisture separator or dryer in the air intake system.  These devices remove moisture from the air before it enters the compressor, reducing the risk of ice formation and ensuring smooth startup.   3.  Insufficient Warm-up Time: In extremely low temperatures, screw air compressors may require a longer warm-up time before starting.  Cold temperatures can affect the performance of various components, such as the motor and valves, making it necessary to allow them sufficient time to reach the optimum operating temperature.  It is recommended to follow the manufacturer's guidelines regarding warm-up time in cold weather conditions.  Providing adequate warm-up time ensures that all components are functioning properly, reducing the chances of startup issues.   4.  Electrical System Issues: Cold weather can also have adverse effects on the electrical system of screw air compressors.  Low temperatures can cause the electrical connections to become brittle and prone to breakage.  Additionally, cold weather can lead to a decrease in battery performance, affecting the starting process.  To avoid electrical system issues, it is crucial to inspect and maintain all electrical connections regularly.  Keeping the electrical system properly insulated and protected from the elements can help prevent startup problems.   Conclusion: Permanent magnet variable screw air compressors are essential equipment in various industries, but low temperature startup issues can hinder their performance.  By addressing factors such as insufficient lubrication, moisture accumulation, insufficient warm-up time, and electrical system issues, operators can ensure smooth startup even in cold weather conditions.  Regular maintenance, following manufacturer guidelines, and using appropriate lubricants and moisture separators are key to avoiding these problems.  By implementing these measures, the efficiency and reliability of screw air compressors can be maintained throughout the year.

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Quanwei Machinery Group (Jiangsu) Co., Ltd. is referred to as Quanwei Machinery for short. The company's main brands are Quanwei and Yongying. Quanwei Machinery Factory was established in 1986 and is located in Lingya District, Kaohsiung City
  • Steps to start up the air compressor
  • The steps to start up the air compressor are usually as follows,Loosen the shipping brackets or bolts on the main frame that connect to the large base of the cabinet. These brackets or bolts are used to secure and protect the air compressor during transportation, but need to be loosened before use to ensure that the air compressor can run freely. Connect the power cord and ground wire, and check whether the voltage is correct and whether the three-phase voltage is balanced. This is to ensure the stable operation of the air compressor. Check whether the electrical wiring is firm and reliable. Electrical wiring is an important part of the air compressor. If the wiring is not firm or has hidden dangers, it may cause equipment failure. .Check whether the oil level in the oil and gas cylinder is at the appropriate position. An oil level that is too low may cause poor lubrication of the equipment, while an oil level that is too high may affect the normal operation of the equipment. Therefore, it is necessary to ensure that the oil level is within the normal range. Check that the belt tension is appropriate. The belt is an important transmission component in the air compressor. If the tension is inappropriate, it may cause the belt to slip or wear too quickly, thus affecting the normal operation of the equipment. Before starting for the first time or after a long shutdown, 0.5-1.5L air compressor oil should be injected into the compressor body through the air inlet, and the air compressor should be rotated by hand for a few turns to prevent oil loss and burning in the head when starting. damage. This is to ensure that the air compressor has enough lubricating oil when it is started, thereby protecting the equipment from damage. After completing the above steps, you can start the air compressor according to the instructions in the operation manual. Please note that you must follow operating specifications during operation and ensure that the equipment is in a stable and reliable condition. If necessary, it is recommended to consult professionals or manufacturers for guidance.
  • Safety Operating Procedures for Screw Air Compressors
  • Screw air compressors are widely used in various industries for their efficiency in generating compressed air.     However, it is crucial to prioritize safety when operating these machines.     This article aims to provide a concise guide on the safety procedures that should be followed while operating screw air compressors. 1.     Proper Training: Before operating a screw air compressor, it is essential to receive proper training on its operation, maintenance, and safety guidelines.     Familiarize yourself with the compressor's specific features, controls, and potential hazards.     Ensure that all personnel involved in operating the equipment have received appropriate training.   2.     Safety Equipment: Always wear appropriate personal protective equipment (PPE) when operating a screw air compressor.     This includes safety glasses, ear protection, gloves, and appropriate footwear.     PPE helps protect against potential injuries caused by flying debris, noise exposure, and accidental contact with moving parts.   3.     Pre-Operational Checks: Before starting the compressor, perform the following checks: a) Inspect the compressor and its surrounding area for any signs of damage, leaks, or obstructions.     Ensure that the compressor is properly grounded. b) Check all safety devices, such as emergency stop buttons, pressure relief valves, and pressure gauges, to ensure they are functioning correctly. c) Verify that all required maintenance has been performed, including oil and filter changes, and that all fluid levels are within the recommended range.   4.     Startup Procedure: a) Before starting the compressor, ensure that all personnel are clear of the equipment and that no one is in the immediate vicinity. b) Follow the manufacturer's instructions for starting the compressor.     This may involve engaging the power supply, opening the air intake valve, and activating the control panel. c) Monitor the compressor during startup for any abnormal noises, vibrations, or leaks.     If any issues are detected, immediately shut down the compressor and report it to the appropriate personnel.   5.     Operation Guidelines: a) Never exceed the maximum operating pressure specified by the manufacturer.     Operating above the recommended pressure can lead to equipment failure and potential accidents. b) Regularly monitor pressure and temperature gauges during operation.     Any significant deviations from normal values should be investigated promptly. c) Avoid overloading the compressor by exceeding its duty cycle.     Allow the equipment to cool down adequately between continuous operation to prevent overheating.   6.     Shutdown Procedure: a) Gradually reduce the operating pressure to zero using the compressor's control panel. b) Once the pressure is reduced, turn off the power supply to the compressor. c) Perform a final check of the equipment and the surrounding area to ensure that everything is in order before leaving.   Conclusion: By following these safety operating procedures for screw air compressors, operators can minimize the risk of accidents and injuries.     Remember, safety should always be the top priority to ensure a secure working environment for both the operator and those in the vicinity.
  • Screw Air Compressor: Understanding the Working Principle
  • A screw air compressor, also known as a rotary screw compressor, is a versatile and widely used device in various industries.  It operates based on a simple yet effective mechanism that ensures efficient compression of air. The primary components of a screw air compressor are two interlocking rotors, usually referred to as the male and female rotors.  These rotors are designed with helical lobes or screws that mesh together when the compressor is in operation.   When the compressor starts, the male and female rotors rotate in opposite directions.  As the rotors turn, the air is drawn into the space between the lobes.  The helical shape of the rotors allows for a gradual reduction in the volume of the air pocket.  Simultaneously, the air is compressed and pushed towards the discharge port.   The compression process in a screw air compressor occurs in three stages: inlet, compression, and discharge.  During the inlet stage, the air is drawn into the compressor through the inlet filter.  The air is then trapped between the rotor lobes as they rotate, creating a sealed area for compression.   In the compression stage, the volume of the trapped air reduces as the rotors continue to rotate.  This reduction in volume leads to an increase in air pressure.  The compressed air is then forced towards the discharge port.   Finally, in the discharge stage, the compressed air reaches the discharge port, which is connected to the air receiver or the system where the compressed air is utilized.  The pressure of the discharged air can be regulated using an integrated control system, ensuring it meets the specific requirements of the application.   One notable advantage of screw air compressors is their continuous operation.  Unlike reciprocating compressors that operate in cycles, screw compressors provide a continuous supply of compressed air.  This feature is particularly beneficial in applications where a constant and reliable source of compressed air is crucial.   Furthermore, screw air compressors are known for their efficiency and reliability.  The design of the helical lobes, along with the minimal clearance between the rotors, ensures a smooth and efficient compression process.  This results in reduced energy consumption and increased durability of the compressor.   In conclusion, the working principle of a screw air compressor revolves around the interlocking rotation of two helical rotors.  This mechanism allows for the gradual reduction of air volume, leading to the compression and subsequent discharge of compressed air.  With their continuous operation, efficiency, and reliability, screw air compressors have become an essential component in various industries, enabling the effective utilization of compressed air.
  • Common Troubleshooting and Maintenance for Screw Air Compressors
  • Screw air compressors are widely used in various industries to generate compressed air, which is essential for powering pneumatic tools and equipment. However, like any mechanical equipment, these compressors are prone to faults and failures. In this article, we will discuss some common troubleshooting and maintenance techniques for screw air compressors.   1. Insufficient or No Pressure Output: One of the most common issues with screw air compressors is the inadequate or no pressure output. Several factors can cause this problem, such as worn-out compressor seals, damaged valves, or clogged filters. To troubleshoot this issue, start by checking the compressor oil level and ensuring it is at the recommended level. Next, inspect the air intake filters and clean or replace them if necessary. Additionally, examine the valves for any signs of damage or leakage. If the problem persists, consult a professional technician for further inspection.   2. Excessive Noise or Vibration: If you notice unusual noise or excessive vibrations coming from your screw air compressor, it is crucial to address the problem promptly. Vibrations can be caused by misaligned couplings, loose bolts, or worn-out bearings. To resolve this issue, carefully inspect the compressor and tighten any loose bolts or connections. Ensure that the couplings are correctly aligned and adjust them if needed. If the noise or vibrations persist, it may indicate a more serious internal problem, requiring the expertise of a qualified technician.   3. Overheating: Overheating is another common problem in screw air compressors, often caused by insufficient cooling or lubrication. It is vital to monitor the compressor's temperature regularly and take immediate action if it exceeds the recommended range. To prevent overheating, ensure that the cooling fans are clean and functioning correctly. Regularly inspect and change the compressor oil according to the manufacturer's recommendations. If the problem persists, it could be due to a malfunctioning thermostat or a faulty temperature sensor, which requires professional attention.   4. Oil Leaks: Oil leaks can occur in screw air compressors due to worn-out seals or gaskets. These leaks not only lead to oil wastage but can also damage other components. To tackle this issue, inspect the compressor for any visible oil leaks and replace the faulty seals or gaskets. It is crucial to use the recommended type and grade of oil to prevent leaks. Regularly check the oil level and maintain it within the specified range. 5. Regular Maintenance: To ensure optimal performance and longevity of your screw air compressor, regular maintenance is essential. This includes checking and changing the compressor oil, cleaning or replacing air filters, inspecting and tightening connections, and lubricating moving parts as per the manufacturer's guidelines. Regularly monitor and record the compressor's performance, such as pressure output and temperature, to identify any potential issues early on.   In conclusion, screw air compressors are reliable and efficient machines when properly maintained. By following these common troubleshooting and maintenance techniques, you can minimize downtime, extend the lifespan of your compressor, and ensure uninterrupted operation in your industrial processes. However, it is always recommended to consult a qualified technician for complex issues or if you are unsure about any maintenance procedures.
  • 1998
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    Establishment

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    Customers Globally

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