怎么判断螺杆鼓风机磨损程度？

一般螺杆鼓风机都是不允许反转的（因为进气口跟排气口的间隙设置不一样），所以罗茨风机都需要在排气端 设置单向阀。也就是允许风从罗茨风机输入到管道系统，防止罗茨鼓风机突然停机

Generally, reverse rotation is not allowed for roots fans (because the clearance between the air inlet and the exhaust port is not the same), so the roots fans need to set a check valve at the exhaust end. In other words, it allows the wind to be input from roots blower to pipeline system to prevent sudden shutdown of Roots blower

螺杆鼓风机而系统的气体收 到系统压力的作用，回流冲击罗茨风机造成罗茨风机反转，损坏罗茨鼓风机另外，几台罗茨鼓风机并联运行的时 候，假设其中一台不工作，那么单向阀也可以防止排气端的气体通过这台没有使用的罗茨鼓风机，造成其反转 损坏。

In addition, when several roots blowers operate in parallel, assuming that one of them does not work, the check valve can also prevent the gas at the exhaust end from passing through the unused roots blower, causing its reverse damage.

总而言之，就是保护螺杆鼓风机不反转.按结构形式分：立式型 罗茨风机两转子中心线在同一垂直水平面 内，气流水平进，水平出；卧式型 罗茨风机两转子中心线在同一水平面内，气流垂直进，垂直出。

In a word, it is to protect the roots blower from reverse rotation. According to the structure, the two rotor center lines of vertical roots blower are in the same vertical horizontal plane, and the air flow goes in and out horizontally; the two rotor center lines of horizontal roots blower are in the same horizontal plane, and the air flow goes in and out vertically.

所说的风叶 相碰，绝大部分是轴承间隙变大引起的，如果更换同步齿轮不行，建议使用质量较好的轴承，不用进口的起 码也得用瓦轴或洛轴的高速轴承，罗茨风机齿轮的磨损可以根据齿轮咬合间隙判断，如果齿轮磨损超限，可以 将两个同步齿轮翻面处理，这样齿轮就可以延长一倍使用寿命，调整两风叶间隙时一定要用塞尺沿风叶长度测 定4个点以上，罗茨鼓风机保证整个长度上的间隙均匀、一致。

Most of the said wind blade collision is caused by the larger bearing clearance. If it is not feasible to replace the synchronous gear, it is recommended to use better quality bearings instead of imported ones. At least the high-speed bearings of Bush shaft or Luo shaft should be used. The wear of Roots blower gear can be judged according to the gear engagement clearance. If the gear wear exceeds the limit, it can be adjusted Turn over the two synchronous gears so that the service life of the gears can be doubled. When adjusting the clearance between the two blades, it is necessary to measure more than 4 points along the blade length with a feeler gauge. Roots blower ensures that the clearance is uniform and consistent throughout the length.

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