FR2525651A1 - Flush for public lavatory - has valve to control siphon in outlet pipe to evacuate reservoir - Google Patents

Abstract

The automatic flush is for a public lavatory. It comprises an inlet pipe (3) containing holes (8) through which the water passes. As the water level (5) rises, a float (7) moves up to cover the holes (8). Water is then directed through a second branch (2) into a receptacle (1) which is shaped so that, when full, it pivots about a transverse axis (9) and discharges its contents into a funnel (10). This causes a siphon to be formed in the outlet pipe (11), which draws the contents of the reservoir out through a hole (12) in the outlet pipe, until the siphon is broken and the cycle repeated.

Description

The present invention relates to a device for periodically priming a siphon and in particular allowing the supply of water point located several hundred meters below the collection level without pressure in the supply pipes.

 Known devices are traditionally made by feeding the load by means of steel pipes of varying strength, depending on the height difference between the collection source and the delivery point. No device is based on a siphon supply.

 Certain devices used in the domestic field, in particular with regard to flushing water; are based on a bell principle priming the siphon, but no process is by definition, frost-free, using many floats and various seals, always fragile.

 The device according to the invention makes it possible to remedy these various disadvantages, which are always greater when the device is subjected to winter weather conditions or else to significant differences in the level of installation of the collection relative to the place of distribution. It indeed includes a priming / rocking container which has the particularity and the originality of having the rocking axis eccentric upward relative to its center of gravity, this according to its prismatic shape or even piped parallel. the water reserve reaches the desired level, according to a filling regulated by a valve and corresponding in volume to that necessary for filling the water point or points to be supplied, a float obstructs the arrival of water in the tank in provenance of source or catchment; a bypass line placed slightly above the main supply then leads the water to the upper and of course open part of the initiator / rocker container which, in. filling up, with its center of gravity moving, when the water has reached a certain level, there is a disruption of the balance of forces keeping it stabilized until then. This is how sharply, the initiating container / rocker swivels on its axes and pours in a fraction of a second the water contained in a funnel / receiver, which, slightly above the level of the elbow of the siphon allows by the mass of water and its weight to pass a continuous and sufficient quantity of water at the elbow in order to prime the sipnon which will thus empty, at the start of an orifice placed at the low point located between the receiver and the elbow of the siphon the water contained in the tank which is thus devolves in depression and not in pressure through flexible pipes most of the time.

 According to a preferred embodiment, the water tank receiving the water for collection can stretch a drinker or a container identical or similar to that in front of our cutter, the float for apart can indifferently be a focused float with or without a needle or an object with a density lower than that of water, and simply obstructing the pipe. The initiating container / rocker is always of a geometrical configuration such that the level of battens rising there comes a time when there is sudden transfer of the center of gravity in order to tilt it on its axes and supply the receiver placed at the level of the siphon elbow and connected to the latter by a tube passing near the bottom, a bit like an elbow but having however an orifice by which the tank empties.

 According to a variant, the water tank can represent a volume corresponding to the total of the volumes of various water points to be supplied.

 According to another variant, the water level can be modified as required in extremely large proportions.

 The single figure represents a device according to the invention.

 The device shown comprises a rocker / initiator (1) supplied by a bypass line (2) located above the inlet level of the main supply line (3), regulated by a valve t4), when the level of the water rises t5) in the oac (6) shown in section, the float (7) rises and obstructs the water inlet orifices (8), the water no longer flowing, it takes the bypass ( 2), fills the rocker / initiator (1) which arrived at its point of imbalance tilts on its axes (9), and the contained water fills the receiver (10), the sufficient mass of water allows it to cross the siphon (t1), once it has started, the tank (6) empties through the orifice (12) towards the delivery points (13), if necessary the flow can be regulated by a flow limiter (14).

 The device according to the invention is particularly intended for frequency fills with self-priming siphon feed for alpine waterers or public toilets, multiple applications can be found with the device, the cases cited are not exhaustive.

Claims (5)

 1) Device for flow or frequent supply by self-priming siphoning characterized in that it comprises a rocker / initiator container (1) of such a geometrical configuration and of a location of the axes above the center of gravity keeping it however stabilized, that the level of the water rising there produces a sudden transfer of charge breaking the equilibrium by tilting it on its axes (9), which has the effect of filling a receiver (10) located above of the water level of the tank / tank (6) to be emptied and connected to the elbow of the siphon (11) by a tube which passes through the bottom point of the tank / tank where there is an orifice (12ì through which the water contained in the tank (6) empties.  2) Device according to claim 1 characterized in that the water supply to the rocker / initiator container is conducted by a bypass pipe (2) located at a level higher than that of the main supply (3) and is produced by obstruction of the openings (8) of the main water supply.  3) Device according to claim 2 characterized in that the closure of the orifices (8) and thereby the supply of the bypass pipe (2) the water supply is obtained by a float (7).  4) Device according to claim 1 characterized in that the receiver (10) receives from the rocker / initiator an amount of water at least sufficient for priming the siphon (11), taking into account the losses due to the orifice (12 ) located at the bottom point.  5) Device according to claims 1, 2 and 3 characterized in that the closure is achieved by a sliding float (7) and obstructing by its movement on the main inlet pipe of the lights (8) thus ensuring the flow of the liquid element towards the bypass pipe (2).