Protective structure for filter element

The utility model discloses a protective structure for a filter element, which relates to the field of protective structures for filter elements and comprises a protective bottle main body, a bottle cap is slidably connected to the outer side of the protective bottle main body, a fixing arc block is arranged on the outer side of the protective bottle main body, and fixing components are arranged in the protective bottle main body and the bottle cap. The fixing assembly comprises a rotating ring, a limiting ring, a locking arc block, a locking arc groove, a sliding groove, a pressing block, a pressing plate, a transmission block, a limiting column, a sliding block, a spring, a locking claw and a locking groove. Through the arrangement of the fixing assembly, the bottle cap can be unlocked by rotating the rotating ring and pressing the pressing plate, the bottle cap can be taken down, the filter element can be taken out, the bottle cap can be fixed and locked by putting down the bottle cap, the filter element c