Grouting reverse blocking structure for isolating hydraulic support and grouting device

Abstract

The utility model relates to a grouting reverse blocking structure for an isolation hydraulic support and a grouting device. The isolation hydraulic support comprises a support tail beam and a grouting hole formed in the support tail beam. The grouting reverse blocking structure comprises a second pipe fitting, a reverse blocking assembly and a first pipe fitting, the second pipe fitting comprises a second pipe body and an annular baffle which are connected, a through hole allowing concrete slurry to circulate is formed in the annular baffle, the reverse blocking assembly comprises an ejector rod and a stop part which are connected, and the ejector rod penetrates through the through hole and the second pipe body and is used for closing or avoiding the through hole. The first pipe fitting is detachably connected to the second pipe fitting, the first pipe fitting comprises a first pipe body and an ejector rod seat arranged in the first pipe body, and the ejector rod seat is used for pushing the ejector rod to move towards one side of the filling space. According to the technical scheme, when grouting is completed, the first pipe fitting and the second pipe fitting can be detached and cleaned in time, the cleaning efficiency is improved, the time cost is saved, concrete slurry can be prevented from flowing back through the reverse blocking assembly, and safety and reliability are higher.