The utility model belongs to the technical field of articles for daily use, and particularly relates to a detachable and washable cup cover and a water cup and a thermos
bottle formed by the detachable and washable cup cover. Comprising a cover body and an inner plug
assembly detachably arranged in the cover body, a sealing cover is arranged at the bottom of the cover body, and the inner plug
assembly is detachably connected with the cover body and the sealing cover through elastic fasteners; a movable buckling part is convexly arranged on the outer side of the elastic
fastener, a clamping groove matched with the movable buckling part is concavely formed in the cover body, and the movable buckling part is buckled in the clamping groove or loosened from the clamping groove; a
spinning protrusion is arranged at the bottom of the elastic
fastener, a
spinning groove is formed in the position, corresponding to the
spinning protrusion, of the upper end face of the sealing cover, and the spinning protrusion is rotationally clamped in the spinning groove or rotationally separated from the spinning groove; the cover body, the inner plug
assembly and the sealing cover can be detached and separated through the elastic buckle assembly, the cover body, the inner plug assembly and the sealing cover can be detached and cleaned by hands without tools, the
sanitation problem that a traditional kettle cover is integrated and cannot be detached, and consequently the kettle cover is difficult to clean is solved, and the
sanitation hidden danger is greatly reduced from the source.