New bottle cap

Abstract

A new bottle cap comprising a cap body and at least one air-return valve having a drinking port and an air-return port which is correspondingly disposed to the air-return valve are disposed on the cap body; an anti-leakage valve is disposed in the drinking port; the place where the air-return port is located extends inwardly to form a convex portion in the cap body; one end of the air-return valve is connected to the convex portion in a matching way, and the other end of the air-return valve is a closed port structure; one end of the air-return valve is designed to be a closed port structure, which can effectively prevent the air in the cap body from outflowing through the air-return valve.

1 . A new bottle cap, comprising:
 a cap body, and   at least one air-return valve,   wherein a drinking port and an air-return port which is correspondingly disposed to the air-return valve are disposed on the cap body, wherein an anti-leakage valve is disposed in the drinking port, wherein the place where the air-return port is located extends inwardly to form a convex portion in the cap body, wherein one end of the air-return valve is connected to the convex portion in a matching way, and the other end of the air-return valve is a closed port structure.   
     
     
         2 . The new bottle cap of  claim 1 , wherein a gap is disposed on the air-return valve or the closed port structure of the air-return valve. 
     
     
         3 . The new bottle cap of  claim 2 , wherein the closed port structure is a beveled structure or a cylindrical structure. 
     
     
         4 . The new bottle cap of  claim 3 , wherein the closed port structure can deviate inwardly under the action of the air pressure in the cap body, preventing the air in the cap body from outflowing through the air-return valve. 
     
     
         5 . The new bottle cap of  claim 3 , wherein the beveled structure comprises two beveled portions, which are symmetrically disposed to form a rectangular opening. 
     
     
         6 . The new bottle cap of  claim 1 , wherein the convex portion is a cylindrical-shaped convex portion, which is connected to one end of the air-return valve, wherein
 an air channel, which is interconnected to the air-return port, is disposed in the cylindrical-shaped convex portion.   
     
     
         7 . The new bottle cap of  claim 1 , wherein the number of the air-return valve is one. 
     
     
         8 . The new bottle cap of  claim 7 , wherein the air-return valve is made of silicon gel. 
     
     
         9 . The new bottle cap of  claim 1 , wherein the drinking port is rectangular-shaped. 
     
     
         10 . The new bottle cap of  claim 9 , wherein the anti-leakage valve in the drinking port is a cross-shaped anti-leakage valve.