| 摘要 |
In a plate valve (1) for a plate column including a vapor passage opening (2) in the plate (10) and a valve body (3) with a lid plate (4) and a guiding side-piece (5), provided with barbs (6) for anchoring the valve body in the opening, the valve body is of material and shape allowing elastic deformation on insertion into the opening, the deformation being mainly restricted to arching of the lid plate. A plate valve (1) for a plate column includes a vapor outlet opening (2) in the plate (10), an opening edge (20) and a valve body (3) adapted to the opening. The valve body consists of a lid plate (4) and a guiding side-piece (5), directed vertically downwards at the edge of the plate and provided with barbs (6) for anchoring the valve body on the opening edge. The outer surfaces of the guiding piece contain a lifting region lifting region (50) perpendicular to the plane of the plate edge, which optionally has downwardly directed dimples. The novel feature is that the valve body is of material and shape allowing elastic (and optionally partially plastic) deformation on insertion into the opening, the deformation being mainly restricted to arching of the lid plate and possible deformation being reversible up to a slight residual deformation. The lid plate optionally has weakened sites (e.g. grooves, slits or holes) to facilitate arching on insertion in the opening. Independent claims are also included for the following: (1) a plate column in which each plate (10) has multiple plate valves as above; and (2) inserting the plate valve bodies into the column, by applying force to the lid plate (e.g. with a blow) so that the plate arches, barbs in the interior surface of the opening swivel and the guiding side-piece and its barbs enter the opening in a snap fitting. |
