| 摘要 |
<p>1. Degasing, cleaning, blocking and recuperating combined unit with enhanced security for volumetric measuring apparatus, which is formed of a main body (1) receiving at its upper portion a recuperation tank (4) and at its lower portion a degasing tank (27), this central unit, connected by a piping (20) to the delivery side of the pump, communicates the degasing tank (27), via a channel (22) and a filter (23), with the outlet (33) toward the measuring apparatus via a delivery plunger tube (28), characterized in that the opening and closing of the plunger tube are controlled by an electro-magnetic valve (31) with latches (32), the operation of this valve is subjected to a switching device (43) controlled by a first float (47) vertically guided by a rod (44) placed in the degasing tank, this float (47) controlling the passage of a channel (50) communicating the degasing tank with the recuperation tank, which is in turn subjected via a second float (12) guided by a rod (11) to a discharge canalization (18) for the return of the foams to the suction side of the pump, with interposition of a nonreturn valve (17).</p> |
