Pipeline structure for flushing and distributing water of phosphoric acid filter

The utility model discloses a pipeline structure for flushing and distributing water of a phosphoric acid filter, which comprises a header pipe, a flushing and distributing water pipeline, a filter component, a communicating pipe, a switch piece and a plurality of nozzles, the inlet end of the filter component is communicated with the header pipe, and the outlet end of the filter component is communicated with one end of the flushing and distributing water pipeline; one end of the communicating pipe is communicated with the main pipe, and the other end of the communicating pipe is communicated with the flushing and distributing water pipeline; the switch piece comprises a check block, a floating ball and an elastic piece, the check block is fixed in the communicating pipe and divides the communicating pipe into two parts which are not communicated with each other, and one end of the elastic piece is fixedly connected with the inner wall of the communicating pipe. The phosphorus-containing gypsum filtering dev