Hermetic sealing system for containers

Abstract

A system includes a lid that moves in a plane parallel to the mouth of a container, a mechanism for activating the lid between the open and closed positions, and a pneumatic seal that acts on the surfaces opposite the lid, and the mouth in the closed position. The mouth has a ring that protrudes laterally from the mouth. The ring and the lid are equipped with an upper latch and a lower latch to hold the lid in the closed position. The pneumatic seal has an elastic protective cover and the mechanism for activating the lid are linked to a remote control device.

1 . Hermetic sealing system for containers of the type comprising a lid ( 1 ) that moves in a plane parallel to the mouth ( 2 ) of the container, means ( 5 ) for activating the movement of the lid ( 1 ) between an open position and a closed position, and a pneumatic seal ( 10 ) acting against the facing surface of the lid ( 1 ) and the mouth ( 2 ) when said lid ( 1 ) is in the closed position; characterized in that:
 the mouth ( 2 ) has a ring ( 6 ) at its upper end that protrudes laterally from the contour of the mouth ( 2 ) and that forms a surface for the action of the pneumatic seal ( 10 ) in the closed position of the lid ( 1 ),   the ring ( 6 ) comprises an upper latch ( 7 ), which covers a portion of its length and forms a stop and holding means of the front area of the lid ( 1 ) in the closed position of the lid ( 1 ),   the lid ( 1 ) comprises at its front area, a lower latch ( 8 ) which forms a stop and holding means for the ring ( 6 ) when said lid reaches the closed position, preventing in combination with the upper latch the displacement of the lid perpendicular to the closing plane and,   the lid ( 1 ) has a ring channel ( 9 ) for receiving the pneumatic seal ( 10 ), whose channel is externally closed by a protective cover ( 11 ) in flexible material for preventing the rubbing of the pneumatic seal ( 10 ) against the ring ( 6 ).   
     
     
         2 . System according to  claim 1 , characterized in that the means for activating the lid ( 1 ) are associated with a remote control device ( 12 ) for its activation during the opening and closing operations. 
     
     
         3 . System according to  claim 1 , characterized in that the protective cover ( 11 ) has an “U” section, whose wings are housed in the channel ( 9 ) and whose core externally covers the pneumatic seal ( 10 ). 
     
     
         4 . System according to  claim 1 , characterized in that the upper latch ( 7 ) has front through holes ( 71 ) for evacuation to the outside, during the closing of the lid, of any particles accumulated on the ring ( 6 ). 
     
     
         5 . System according to  claim 1 , characterized in that the lid ( 1 ) has at its front end nozzles or blowers ( 14 ), connected to a pressurized air supply circuit and which project pressurized air over the ring ( 6 ) during the closing of the lid for removing any accumulated particles on the ring ( 6 ). 
     
     
         6 . System according to  claim 1 , characterized in that it comprises an anti-trap safety device for stopping the closing operation of the lid in the case of trapping of an operator or object located at the mouth of the container during the closing of the lid.