Multifunctional diaphragm pump applied to liquid filling device

The utility model relates to a multifunctional diaphragm pump applied to a liquid filling device, which includes a diaphragm pump, a spice storage tank and a cleaning hot water tank, wherein an inlet of the diaphragm pump is connected with a local spice bucket and the cleaning hot water tank respectively through a first pneumatic two-way valve and a second pneumatic two-way valve; and an outlet of the diaphragm pump is connected with the spice storage tank through a fifth pneumatic two-way valve, a third pneumatic three-way valve and a first pneumatic three-way valve which are sequentially connected. The multifunctional diaphragm pump has the benefits that functions of an on-site perfuming and feeding machine are enhanced and enriched; and the actuating efficiency and the effect are improved for the reason that the diaphragm pump is used in the traditional perfuming and feeding machine.