水池(箱)的溢流管道防虫罩是目前防止生物进入其中造成水质污染的常用措施,但是其存在排水能力不足、操作不便等原因而应用受限。根据实际情况提出了网式、重力旋板式、弹力旋板式和挡板升降式四种防虫装置,在工程建设中可以根据不同的要求配置合适的防虫装置。对于水质要求不高的,可以选择网式溢流管道防虫装置。对于水质要求高的,应该选择旋板式或挡板升降式溢流管道防虫装置。 The overflow pipe mothproof cover of the tank (box) is a commonly used measure to prevent organisms from entering into it and cause water pollution, but its application is limited because of insufficient drainage capacity and inconvenient operation. According to the actual situation, four kinds of insect-proof devices such as mesh-type, gravity spin-board, elastic spin-board and baffle lift are proposed, and suitable insect-proof devices can be configured according to different requirements during construction. For less demanding water quality, you can choose net overflow pipe insect control device. For the high water quality requirements, you should choose rotary plate or baffle lift overflow pipe insect control device.