博文
目前显示的是 九月, 2019的博文
Problems to be paid attention to in the design of vacuum system
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(1) when vacuum components, such as valves, traps, dust remover and vacuum pump are connected with each other, they should try their best to make the suction pipe short, pipe flow guide large, the diameter of the pipe is generally not less than the diameter of the pump mouth, which is an important principle of system design. But at the same time to consider the installation and maintenance of convenience. In order to prevent vibration and reduce noise, mechanical pumps are sometimes allowed to be installed in the pump room near the vacuum chamber. (2) mechanical pumps (including roots pumps) have vibration. To prevent vibration from spreading to the whole system, hose is usually used to reduce vibration. Hoses are available in both metallic and nonmetallic forms, regardless of which hose is used to ensure that it does not deflate under atmospheric pressure. (3) after the completion of the vacuum system, it shall be convenient for measurement and leak detection. Product
Vacuum system maintenance: bubble leak detection method
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Vacuum system maintenance method: pressure leak detection method in the bubble leak detection method Bubble leak detection method is to fill the leakage gas with a certain pressure in the tested part, and then put it into the liquid. If there is a leak hole, the gas will enter the surrounding liquid through the leak hole to form bubbles, so as to determine the location of the leak hole. At the same time, according to the pressure of filling gas, bubble formation rate (number of bubbles formed per second), size (bubble diameter), combined with the properties of gas and liquid to roughly estimate the leakage rate of the hole. The bubble leak detection method is simple, intuitive and economical, but it is suitable for the air tightness inspection of the tested parts which can withstand positive pressure because of the need to fill the gas into the tested parts. No matter which kind of bubble leak detection method is adopted in vacuum system maintenance and leak detection,
Vacuum pump transmission parts wear repair procedures
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All kinds of products will appear such and such wear phenomenon after a period of time, vacuum pump use time will also appear wear phenomenon, very common problem is the transmission part wear, and a large number, damage frequently, including bearing position, bearing seat, bearing room, keyway and thread and other parts. Therefore, it is necessary for us to know the wear condition of this product. 1. The traditional welding machine processing method is easy to cause material damage, resulting in deformation or fracture of parts, with great limitations; Brush plating and spray machining methods often need outsourcing, not only repair cycle long, high cost, and because of the repair of materials or metal materials, can not fundamentally solve the cause of wear. 2. Repair steps for the wear of the transmission part of the vacuum pump: (1) mold processing: make standard follwing molds. (2) surface treatment: deoiling, polishing and cleaning to ensure clean, dry and firm su