Pipeline filtering device for water conveying pipe network

The utility model provides a pipeline filtering device for a water conveying pipe network, which comprises a cylinder body, the top end of the cylinder body is closed, and the bottom end is opened; the side wall of the cylinder is communicated with a water inlet pipe, the top of the cylinder is communicated with a water outlet pipe, the bottom end of the cylinder is welded with an upper flange, the bottom of the upper flange is bolted with a lower flange, and the bottom of the lower flange is connected with a collecting cover with an emptying valve; an upper blocking table is connected into the cylinder body; the inner wall of the lower flange piece is connected with a lower blocking table. A secondary filter screen and a primary filter screen are arranged in the cylinder body; the top of the secondary filter screen is propped against the lower surface of the upper baffle table; the first-stage filter screen is arranged below the second-stage filter screen, and the first-stage filter screen and the second-sta