Protective sleeve and magnetic tea making cup and tea making device using same

The utility model provides a protective sleeve and a magnetic suction tea making cup and a tea making device using the same, the protective sleeve comprises a tubular main body, two ends of the main body are open, and the periphery of the main body is provided with a break opening penetrating through the two ends. The main body is made of an elastic material, during installation, the diameter of the protective sleeve and the size of the broken opening are adjusted through compression, the main body can be installed in water outlet sections with different diameters, meanwhile, the main body can expand and abut against the inner wall of the water outlet section through elastic reset force, and therefore the main body can be fixedly installed at the bottom in the water outlet section. And the inner wall of the water outlet section is isolated from the metal ball, so that the metal ball is prevented from impacting the inner wall of the water outlet section. The protective sleeve provided by the utility model is a