Anti-blocking ecological water filter tank

The utility model discloses an anti-blocking ecological water filter which comprises an ecological water filter main body, a water filter layer is assembled in the ecological water filter main body, and an anti-blocking drainage cylinder is assembled at the lower end of the side wall of the ecological water filter main body; a dismounting opening is formed in the side wall of the ecological water filter tank main body, and a sealing plate is mounted in the dismounting opening; the water filtering layer is connected with the sealing plate; screw grooves are formed in the inner walls of the upper and lower sides of the dismounting opening; screw holes corresponding to the screw grooves in position are formed in the upper end and the lower end of the outer wall of the sealing plate, and bolt bodies are in threaded connection with the interiors of the screw holes and the screw grooves. The anti-blocking drainage cylinder comprises an upper drainage cylinder and a lower drainage cylinder, and a drainage pipe is in