Dirt absorbing nozzle for filter

A dirt absorbing nozzle for a filter comprises a dirt absorbing head attached to a main filter screen and a dirt absorbing branch pipe allowing mounting of the dirt absorbing head, wherein an inner chamber of the dirt absorbing head is communicated with an inner chamber of the dirt absorbing branch pipe; a dirt absorbing pipe is fixed at the end, away from the dirt absorbing head, of the dirt absorbing branch pipe; a dirt absorbing head support is inserted in the end, close to the dirt absorbing head, of the dirt absorbing branch pipe in an interference fit manner; a through hole communicatedwith the inner chamber of the dirt absorbing branch pipe is formed in the dirt absorbing head support; the end, close to the dirt absorbing branch pipe, of the dirt absorbing head is inserted into thethrough hole formed in the center of the dirt absorbing head support in an interference fit manner; ring magnets are mounted on opposite sides of the dirt absorbing head support and the dirt absorbing head, magnetic poles of