Overfill protector

Abstract

Abstract The invention pertains to an overfill protector for a receiver to be filled by means of a suction apparatus, said overfill protector comprising a sealing plate (5) in or in association with a cover (2) of the receiver (1), said sealing plate covering a connection (3) of a source of suction and being provided with at least one air opening (11); a casing (8) to be mounted to the underneath of the sealing plate, said casing (8) having its lower part provided with openings for air flow; and a float disposed within the casing (8), said float being adapted in its upper position to press against the sealing plate (5) and to close the air openings (11) comprised therein. For reliable operation, the float (6) is adjusted to encase part of the interior of the casing. Openings (9, 10) of two sizes are provided in the lower part of the casing (8), the smaller ones (9) in proximity to an edge outside the area defined by the float (6), and the larger opening (10) in the middle, at the area defined by the float (6), the smaller openings (9) being so small that when the surface (P) of the liquid rises to the level of the lower part of the casing (8), the liquid flows into the casing only through the opening (10) at the float (6) and thereby lifts the float (6) to its upper position, in which the float blocks the entrance of air into the connection (3) of the source of suction.

Inventors

• 👤 Veikko Rajamaki

Bibliographic Details