| 摘要 |
PURPOSE: A structure for preventing the back flow of water in a connection tube is provided to prevent damage to a pump. CONSTITUTION: A structure for preventing the back flow of water in a connection tube comprises a body plate(10), an air passing groove(14), and a valve(20). The body plate is shaped in order to have a predetermined length and is inserted into an assembling groove(52) formed in the floor of a bath tub(50). In the upper side of the body plate, one or more air injection holes are formed to be penetrated. The air passing groove passes the air provided from the outside through the air injection hole. The valve is provided with the air provided from a dry pump through a connection pipe and generates bubbles. On one end of a guide shaft, a cover plate is combined. The other end of the guide shaft guides the operation of the cover plate. |
