Patent ID: 7654280

Claim:
An anti-freezing hydrant, comprising: an outer tube of which one end is provided with a water inlet and the other end is provided with a joint port and a water outlet; a handle knob in which a handlebar is connected to the joint port and provided with a hollow valve rod of which a back end is provided with a lump formed with an oblique cone where a water leakage hole is formed communicating with the valve rod, in which an end of the lump is provided with a first joint; a valve inside which a hollow valve chamber is formed and provided with an inner water inlet communicating with the water inlet, and with an inner water outlet provided with a switching valve provided with a second joint connected to the first joint that controls the switching valve, in which a one-way valve is provided between the inner water inlet and the switching valve and comprises a rubber cushion made of a soft rubber, a seat, and a elastic component, in which the seat is assembled with the rubber cushion and the elastic component so that the elastic component applies an elastic force onto the rubber cushion, thereby the rubber cushion being made to elastically suppress the inner water inlet; and a back pressure device comprising an elastic component and a back pressure stopper and being provided between the valve and the handle knob, in which a bore of the back pressure stopper is a complement of an inner inclined cone with the oblique cone, and a one-way back pressure gasket is provided around the outside of back pressure stopper, in which a mouth of the one-way back pressure gasket is provided toward a side of the water outlet and the elastic component is connected to the back pressure stopper and then applies an elastic force.