Vacuum Insulation Lid

Abstract

A vacuum insulation lid or plug comprises stainless steel housing. The housing has a vacuum cavity and has an evacuation hole on it. The evacuation hole has a sealing solder seal block on it. The housing includes a downwardly opening outer cover and a downwardly opening inner cap, the outer cover and the inner cap are welded together with an inner cavity that is formed between the outer cover and the inner cap, and the inner cap is pressed to form an internal thread. Or, the housing comprises an upper cover and a lower cylinder, the lower end of the lower cylinder is closed, the outer diameter of the lower cylinder is smaller than the outer diameter of the upper cover, the upper cover and the lower cylinder are connected by welding and the interior of the lower internal cylinder and the interior of the upper cover form the inner cavity, the side wall of the lower cylinder is pressed to form an external thread and a groove, and a waterproof seal ring sets in the groove.

What is claimed is: 
     
         1 . Vacuum insulation lid, comprising stainless steel housing ( 10 ), wherein: the said housing ( 10 ) has a vacuum cavity ( 11 ), the said housing ( 10 ) has an evacuation hole ( 12 ) on it, and the evacuation hole( 12 ) has a sealing solder seal block ( 20 ) on it. 
     
     
         2 . The vacuum insulation lid according to  claim 1 , wherein the said housing ( 10 ) includes a downwardly opening outer cover ( 101 ) and a downwardly opening inner cap ( 102 ), the outer cover ( 101 ) and the inner cap ( 102 ) are welded together so that an inner cavity ( 11 ) is formed between the outer cover ( 101 ) and the inner cap ( 102 ), and the inner cap ( 102 ) is pressed to form an internal thread ( 1021 ) . 
     
     
         3 . The vacuum insulated lid according to  claim 2 , wherein the outer cover ( 101 ) has a pit ( 1011 ) on its top and the evacuation hole ( 12 ) is located inside the pit ( 1011 ). 
     
     
         4 . The vacuum insulated lid according to  claim 1 , wherein the said housing ( 10 ) comprises an upper cover ( 103 ) and a lower cylinder ( 104 ) which are stamped and formed from stainless steel sheet, the lower end of the lower cylinder ( 104 ) is closed and the outer diameter of the lower cylinder ( 104 ) is smaller than the outer diameter of the upper cover ( 103 ), the upper cover ( 103 ) and the lower cylinder ( 104 ) are connected by welding and the interior of the lower internal cylinder ( 104 ) and the interior of the upper cover ( 103 ) form the inner cavity ( 11 ), the side wall of the lower cylinder ( 104 ) is pressed to form an external thread ( 1041 ) and a groove ( 1042 ), and a waterproof seal ring ( 30 ) sets in the groove ( 1042 ).