Collection tank

摘要

A collection tank for use in a vacuum operated earth reduction system, the collection tank comprising a closed first end, an open second end defining a tank sealing flange and a body extending between the closed first end and the open second end. An internal chamber defined by the body, the closed first end and the open second end has a door coupled to the open second end and is configured to releasably seal the open second end. An automated door closer is coupled to a center of the door, wherein the automated door closer provides a closing force at the center of the door so that the closing force is equally distributed about a periphery of the door to seal the door against the tank sealing flange.

主权项

1. A collection tank for use in a vacuum operated earth reduction system, said collection tank comprising:
a. a closed first end; b. an open second end; c. a generally cylindrical body extending between the closed first end and the open second end; d. a door pivotally coupled to the body so that the door is movable between a first position, at which the door is spaced from the open second end, and a second position, at which the door closes the open second end; and e. a door closer having
(i) a cross bar rigidly attached to the door, the cross bar having a first end and a second end,(ii) a first linkage assembly having a first end coupled to the cross bar first end at a first pivot point, a second end coupled to the body at a second pivot point, and a third pivot point intermediate the first linkage assembly first pivot point and the first linkage assembly second pivot point, and(iii) a second linkage assembly having a first end coupled to the cross bar second end at a first pivot point, a second end coupled to the body at a second pivot point, and a third pivot point intermediate the second linkage assembly first pivot point and the second linkage assembly second pivot point, wherein the first linkage assembly and the second linkage assembly are configured so that
when the door is in the second position, a first line passes through the first linkage assembly first pivot point and the first linkage assembly second pivot point, and a second line passes through the second linkage assembly first pivot point and the second linkage assembly second pivot point, andwhen the first linkage assembly third pivot point has rotated from a first side of the first line to a second side of the first line and the second linkage assembly third pivot point has rotated from a first side of the second line to a second side of the second line, the first linkage assembly third pivot point is biased away from the first line, the second linkage assembly third pivot point is biased away from the second line, and the first linkage assembly and the second linkage assembly provide respective closing forces to the cross bar in a direction toward the door.