对于排污泵来说最关键的问题是可靠性问题，因为需要输送的介质是一些含有固体物料的混合液体，这个问题使得排污泵在密封、电机承载能力、轴承布置及选用等方面的要求比一般的泵要高，因此在选型时，一定要了解清楚排污泵的密封可靠性和承载能力。 For sewage pump, the key question is the reliability problems, because of the need to transport medium is some mixed liquid containing solid materials, the problem that sewage pump in a sealed, selection of motor bearing capacity, bearing arrangement and requirements to be higher than the average pump, so in the selection, must know sewage pump seal reliability and carrying capacity. 为了提高排污泵的寿命,现在国内外大部分厂家都在泵的保护系统上想办法,即在泵发生泄漏、过载、超温等故障时能进行自动报警,并自动停机备修。 In order to improve the life of the sewage pump, and now most of the foreign and domestic manufacturers have to find a way to in the protection system of the pump, namely in the pump leakage, overload and overtemperature of failure can automatically alarm, and automatically stop for repair. 在排污泵中设置保护系统是很有必要的,它能有效地保护电泵的安全运行。但这并不是问题的关键,保护系统只不过是在泵发生故障后的一种补救办法,是一种比较被动的办法。 It is necessary to set up the protection system in the sewerage pump, which can effectively protect the safe operation of the electric pump. But that is not the point. The protection system is merely a remedy after the pump failure. It is a more passive approach. 问题的关键应该是从根本着手,彻底解决泵在密封、过载等方面的问题,这才是一种较为主动的办法。 The key point of the problem should be to start from the root and solve the problem of pump sealing and overloading. This is a more proactive approach.