For screw compressor design: 1. rational design of the intake and exhaust pipes, dhl reduce pressure loss and leakage inside the tubes; 2. frequency control to achieve capacity adjustment, compared with the normal dhl intake throttle type, frequency Compressor energy savings of up to 30% to 40%; 3. Using direct-coupled motor, reducing mechanical transmission losses, while using dhl efficient permanent magnet synchronous motor. 4. The use of microcomputer control, reduce loading and unloading of dhl magnitude, to ensure the lowest gas equipment dhl pressure conditions, reduce exhaust pressure dhl set; 5. Multi-unit control, the use of the air volume automatically according to the actual dhl Selected necessary dhl dhl number of units of the machine, thus avoiding unnecessary waste of dhl dhl huge multiple machines at the same time due to the operation. For screw compressors, its shortcomings are the following three points: 1. The high cost: screw compressor rotor tooth surface is a curved space, the need to use a special tool for processing on expensive special equipment. In addition, the screw compressor cylinder machining accuracy also have higher requirements. 2. Not suitable for high pressure applications: Due to the limitations of the rotor and the bearing stiffness and other aspects of life, can only be applied to the screw air compressor and low pressure range, the exhaust pressure is generally not more than 3.0Mpa. 3. Can not be made miniature: screw compressors rely clearance seal gas volume flow is greater than the current general only 0.2m3 / min, screw compressor that has the superior performance. Fault diagnosis is very important first impression many people have a tendency to diagnose equipment failures in the process, and immediately picked up the tools and start working. A better approach is to lay down their tools to collect a first impression. Although they may not appear immediately the problem, but they can identify problems that affect the overall reliability of the device. Initial inspection recommendations include: 1. Overall clean: clean plant often showed mechanical maintenance activities carried out at a higher standard. Check the ground or on the basis of the dust, and pipe supports, sealing leaks, and other evidence of other maintenance activities affect the reliability of the equipment or environmental factors influence. What do you expect, on-site maintenance, you can shorten performed without introducing contaminants, the life of the replacement parts? When on-site repair, the best hope is to not put dust into the replacement parts, so as not to affect the component life. 2. A more detailed examination of the machine: First start with the basics from the device, look for signs of corrosion or improper anchoring. After checking the foot and gaskets and bolts. Foundation repair bad, often shows its lack of quality maintenance. After checking the shaft and the drive member (i.e. air compressor price, couplings, belts, etc.), and finding shaft damage, improper coupling assembly, the key length inappropriate evidence. Although the problem of these components may not be the cause of the current problem of air compressor brand, if improvements will improve the mechanical reliability. 3. If Cottle compressor operation, vibration tests: use simple tools (with the jagged edge of the coin) you can get the impression that the device is running related sports. Tend to focus on bearing vibration measurements, coins in hand, from the beginning until the bearing housing foundation, feeling abnormal movement. Care component connections, such as air compressors and cement foundations, steel and feet, all pipes and pipe connections. Foot loose equipment will have a huge impact. 4. A detailed description of the initial impression: they will provide a comprehensive and professional reporting improvements, which will affect the life and reliability of the machine. Check the other devices in the area if there is a similar problem to the stakeholders to submit this information. While no one likes failure to follow a good introduction to the steps can have a positive impact on the equipment, we recommend will be accepted. Air compressor rental, Qin Wei Air, Cottle Europe's leading technology (certified), provided by the Xianyang compressor Compressor Co., Ltd. Qin Wei. Xianyang Qin Wei Compressor Co. (www.qwkyj.cn/) is Xianyang, compression, separation equipment leader, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Qin Wei Air leadership with the staff warmly welcome all inquiries negotiations to create Qin Wei Air a better future.