| 摘要 |
A lotion pump may include an upper one-way valve. The one-way valve may include an elastic tube and a valve seat. The valve seat is disposed on the connecting/guiding member or the nozzle head and has a closed top end and at least one opening provided on a side surface, and the elastic tube elastically covers the side surface of the valve seat. The one way valve may include an open state and a closed state. In the open state, the elastic tube expands to open the opening; and in the closed state, the elastic tube closes the opening. The lotion pump may be connected to a liquid container that is fixed to a fixture. |
