RU2018142906A - FEEDER FOR FLUSH TANK - Google Patents

Claims (11)

1. A feeding device (1) for a flushing tank, comprising a hollow body (2); a valve assembly (3) located inside the housing (2) and located between the inlet pipe (7) and the exhaust pipe (8) for selectively opening / closing the passage (9) between the inlet pipe (7) and the exhaust pipe (8); a hole (24) for air formed in the housing (2) and communicating with the outer side of the housing (2) and with the exhaust pipe (8); and a filling chamber (22) located in the housing (2) and communicating with the hole (24) for air and with the exhaust pipe (8); wherein the exhaust pipe (8) is connected to the exhaust pipe (6), which extends along the longitudinal axis (B), essentially vertical in use, and is equipped with a water outlet (19) located on the lower free end (20) of the exhaust pipe (6) to drain the water into the tank when used; moreover, the hole (24) for air is formed by a hole (25) formed through the upper wall (26) of the housing (2) at the upper end (23) of the housing (2) and the feeding device (1), and faces upwards when used; characterized in that the exhaust pipe (6) has a constriction (35) located on the lower free end (20) of the exhaust pipe (6) and is configured to cause filling of the exhaust pipe (6) and the chamber (22) with water until the air hole (24) will not be blocked by the volume of water. 2. The device according to claim 1, in which the narrowing (35) is located in the immediate vicinity of the outlet (19) for water. 3. The device according to any one of paragraphs. 1 and 2, in which the narrowing (35) is formed by a conical section (36) of the exhaust pipe (6), converging to the lower free end (20) of the exhaust pipe (6), and the outlet (19) for water. 4. The device according to any one of paragraphs. 1-3, in which the outlet (19) for water is located radially relative to the outlet pipe (6) and the axis (B) of the outlet pipe (6), and is formed through the side wall (37) of the outlet pipe 6. 5. The device according to claim 4, in which the exhaust pipe (6) has a lower baffle (38) located on the lower free end (20) of the exhaust pipe (6) and essentially transverse to the axis (B) and axially closing lower free end (20); and the outlet (19) for water is formed by one or more radial slots (39) formed through the side wall (37) above the partition (38). 6. The device according to claim 5, in which the partition (38) is inclined relative to the axis (B). 7. The device according to any one of paragraphs. 1-6, containing a secondary chamber (29) located above the filling chamber (22) and communicating with the filling chamber (22) through the hole (24) for air and configured to accept water leaving the filling chamber (22) through the hole (24) for air. 8. The device according to claim 7, in which the upper wall (26) separates the filling chamber (22), bounded above by the upper wall (26), from the secondary chamber (29). 9. The device according to any one of paragraphs. 7 and 8, in which the secondary chamber (29) has a barrel-shaped shape, open from above limited by a peripheral edge (28). 10. The device according to claim 9, in which above the air hole (24), the peripheral edge (28) is partially closed by a wall portion (30) located above the upper wall (26) and optionally provided with a drain (31) formed by a recess . 11. The device according to any one of paragraphs. 1-10, in which the filling chamber (22) has an auxiliary outlet (33), opposite the air hole (24) and essentially transverse to the axis (B) and facing down; wherein the auxiliary outlet (33) is formed in the lower wall (34) of the housing (2) at an axial height between the air hole (24) and the water outlet (19).