Apparatus For Sealing A Vacuum Tank Door

摘要

An apparatus for sealing a vacuum tank door. The apparatus comprises a circular flange attached to a door panel of a vacuum tank, a horizontal crossbar connected to the center of the door panel and a lifting assembly. The lifting assembly comprises an upper linkage arm, a lower linkage arm, and a hydraulic cylinder. Activation of the hydraulic cylinder causes the linkage assembly to move downwards pulling on the horizontal crossbar and pulling the vacuum tank door towards the tank. Activation of the hydraulic cylinder also causes a connection point of the lower linkage arm and the upper linkage arm to move over-center of the connection between the lower linkage arm to the to the tank creating a tight seal between the vacuum tank door and the tank.

主权项

1. A seating mechanism for seating a vacuum tank comprising:
a circular door having an inner surface and an outer surface; a first brace connected to the inner surface and spaced apart from a diameter of the door; a second brace connected to the inner surface and orthogonally disposed relative to the first brace; a first bracket connected to the outer surface of the door; a second bracket connected to the outer surface of the door; a first linkage assembly connected to the first bracket; a second linkage assembly connected to the second bracket; a first actuator connected to the first linkage assembly; and a second actuator connected to the second linkage assembly; wherein the first and second actuator are connected to operate jointly to cause the first linkage assembly and the second linkage assembly to open or close the door in relation to the vacuum tank.