Waterproof air pump, inflatable product, and production method and utilizing method for inflatable product

A waterproof air pump, comprising:

• a waterproof shell and an air pump body,
• wherein the air pump body is removably connected in the waterproof shell;
• the waterproof shell comprises a lower shell and a waterproof upper cover;
• the lower shell and the waterproof upper cover are removably connected forming a sealed connection;
• the air pump body and the lower shell are removably connected;
• the air pump body is provided with a first air outlet, the first air outlet comprising a raised substantially cylindrical protuberance extending from a bottom of the air pump body, and a second air outlet is formed in the lower shell, an inside of the lower shell having a raised substantially circular wall around a perimeter of an inside of the second air outlet, the raised substantially circular wall having a perimeter greater than a perimeter of the raised substantially cylindrical protuberance, wherein the first air outlet includes air flow apertures disposed on both a bottom and a substantially cylindrical side of the substantially cylindrical protuberance and wherein the substantially circular wall is disposed directly adjacent to the air flow apertures on the substantially cylindrical side of the substantially cylindrical protuberance;
• and
• the second air outlet communicates with the first air outlet, the substantially cylindrical protuberance fitting inside the raised substantially circular wall.