Preliminary filling is filled out filter material and is had anti - liquid level hose who strains function

The utility model discloses a preliminary filling is filled out filter material and is had anti - liquid level hose who strains function, including the bottom, the sediment tube, the strainer with close the water pipe, the upper end of closing the water pipe is provided with the top cap, the quantity of strainer is the multistage, every section strainer all includes the inlayer strainer, middle level strainer and outer strainer, the inlayer strainer is provided with outsourcing geotechnique cloth outward, fill the inlayer filter material between outsourcing geotechnique's cloth and the middle level strainer, fill outer filter material between middle level strainer and the outer strainer, the lower extreme and the sediment tube of inlayer strainer are connected, the upper end of inlayer strainer with close water piping connection, be provided with the partition holding ring in inlayer filter material and the outer filter material, the inlayer strainer, all be provided with the drainage hole on middle level str