Device for preventing a faucet from leaking water and flowing back

Abstract

A device for preventing a faucet from leaking water and flowing back is disclosed, including an outer cover and an inner lining member, the inner lining member is provided in the outer cover. The outer cover is configured to cover a wall at a back end of the faucet to prevent water from flowing back, the inner lining member is provided with a plug hole for a water pipe to be plugged in, and the liner lining member is formed with a waterproof section on an outside of the plug hole to prevent water from flowing back into the wall. Through a combination design of the outer cover and the inner lining member and with assistance of an annular washer, thereby realizing effective shielding and waterproofing of the wall at the back end of the faucet.

What is claimed is: 
     
         1 . A device for preventing a faucet from leaking water and flowing back, comprising an outer cover and an inner lining member; wherein the inner lining member is provided in the outer cover; and
 wherein the outer cover is configured to cover a wall at a back end of the faucet to prevent water from flowing back, the inner lining member is provided with a plug hole for a water pipe to be plugged in, and the liner lining member is formed with a waterproof section on an outside of the plug hole to prevent water from flowing back into the wall.   
     
     
         2 . The device for preventing the faucet from leaking water and flowing back according to  claim 1 , wherein the outer cover and the inner lining member are both circular, a center of the outer cover is provided with a faucet holding slot for accommodating a tail of the faucet, and the inner lining member is provided with a corresponding avoiding slot. 
     
     
         3 . The device for preventing the faucet from leaking water and flowing back according to  claim 2 , wherein an edge of the outer cover is circumferentially outwardly and inwardly provided with a waterproof slope and an edge of the inner lining member is provided with a corresponding avoiding slope. 
     
     
         4 . The device for preventing the faucet from leaking water and flowing back according to  claim 3 , wherein further comprises an annular washer, the inner lining member is provided with an annular step on the outside of the plug hole, and the annular washer is configured to be sleeved on the water pipe to prevent water from flowing back. 
     
     
         5 . The device for preventing the faucet from leaking water and flowing back according to  claim 4 , wherein the outer cover is made of stainless steel. 
     
     
         6 . The device for preventing the faucet from leaking water and flowing back according to  claim 5 , wherein the inner lining member is made of plastic material.