Adjustable-volume metering pump automatic dispenser device

Abstract

The invention relates to an adjustable-volume metering pump automatic dispenser of sanitary products for toilet water cisterns, made up of a reservoir and of an auxiliary reservoir, and in which: the reservoir contains a sanitary product and an adjustable-volume metering pump of a membrane-pump version is mounted by a sealed assembly in its lower part, and each time the toilet is used, the auxiliary reservoir releases the dose of sanitary product into the water at the end of the flush and then receives from the adjustable-volume metering pump a new dose of sanitary product required for the next use of the toilet.

1 . An adjustable-volume metering pump automatic dispenser device made up of two reservoirs; a reservoir and an auxiliary reservoir; comprising:
 the reservoir contains a sanitary product, and   the adjustable-volume metering pump is mounted by a sealed assembly in the vertical cylindrical recess in the bottom of this reservoir,   each time the toilet is used, the auxiliary reservoir releases the previously received dose of sanitary product into the water at the end of the toilet flush, and   then receives from the adjustable-volume metering pump the dose of product required for the next use of the toilet,   the adjustable-volume metering pump comprises a float fixed to a piston slideably mounted on the metering pump,   at its middle it comprises a tapped through-hole into which an end-stop adjusting rod is screwed, the volume being adjusted by screwing in or out the end-stop adjusting rod, one end of which constitutes an adjustable end-stop with which the piston comes into contact, the device thus regulating and limiting the stroke and determining the volume of the dose of product entering and leaving the adjustable-volume metering pump,
 the end-stop adjusting rod is operated using an indexed knob, 
   the adjustable-volume metering pump comprises:   an inlet valve via which the sanitary product contained in the reservoir enters on top of the piston;   an outlet valve on a carrier of this valve is connected to a duct, the other end of which duct is connected to the pouring spout that enters the auxiliary reservoir,   the auxiliary reservoir comprises:   a means for filling it with water from the toilet cistern;   in its bottom part, a discharge device made up of a float mounted on an articulated lever which operates a discharge valve.   
     
     
         2 . The device in  claim 1 , wherein the adjustable-volume metering pump is an adjustable-volume metering pump in the membrane-pump version or an adjustable-volume metering pump in the piston-pump version. 
     
     
         3 . The device as claimed in  claim 1 , wherein the articulated lever is designed to bring about the instant opening of the valve when 1.5 liters of water, namely a depth of 4.5 centimeters of water, still remain in the toilet cistern, which instantaneous opening of the valve triggers the discharge of the predilution into the end-of-flush water in the toilet cistern. 
     
     
         4 . The device as claimed in  claim 1 , wherein by way of filling means, the auxiliary reservoir comprises in its top part a vertical filling slot on which there is mounted an adjustable slide which, when a toilet cistern is full, allows water to pass over the slide to fill the auxiliary reservoir. 
     
     
         5 . The device as claimed in  claim 1 , wherein:
 the auxiliary reservoir comprises a sealed lid retaining the air contained in this reservoir and an inlet valve that admits a quantity of water from the toilet cistern, the volume of which is determined by its position,   as the water level in the toilet cistern rises above this inlet valve, this inlet valve does, however, allow the passage and pressurizing of the reserve of air trapped in this auxiliary reservoir,   the dose of sanitary product received from the adjustable-volume metering pump and the water that has entered via the inlet valve prepare the predilution which is driven and discharged by the compressed air as the opening of the valve is triggered, into the end of the flush from the toilet cistern.   
     
     
         6 . The device as claimed in  claim 1 , wherein the auxiliary reservoir is open at the top and laterally comprises an inlet valve which can be positioned between the minimum level and the maximum level for water in the toilet cistern so that as the water level in the toilet cistern rises, the water reaches the same level in the auxiliary reservoir, the water and the dose constituting the predilution being discharged on the triggering of the opening of the valve. 
     
     
         7 . The device as claimed in  claim 1 , wherein the device is designed so that the triggering of the instantaneous opening of the valve to release the predilution occurs at the moment when the volume of water being discharged from the toilet cistern, with the dose of product, is calculated so that this final volume corresponds to the volume of a U-bend and is not flushed down the drain. 
     
     
         8 . The device as claimed in  claim 1 , wherein the auxiliary reservoir is mounted with adjustable vertical sliding against the reservoir, with a screw that maintains the position of the setpoint for the triggering of the opening of the discharge valve under the action of the float
 on the articulated lever.   
     
     
         9 . The device as claimed in  claim 1 , wherein:
 the adjustable-volume metering pump in its piston-pump version comprises in its upper part:   the inlet valve,   the outlet valve,   the central tapped through-hole into which the end-stop adjusting rod is screwed,   the float is mounted on the lower part of the piston which piston is positioned in the cylinder of the metering pump, and a double-lip seal is mounted on the upper part of the piston, and   a spring encourages the downward movement of the piston,   the adjustable-volume metering pump ( 6 ) is fixed with the seal ( 11 ) to the reservoir ( 1 ).   
     
     
         10 . The device as claimed in  claim 1 , wherein the adjustable-volume metering pump is a membrane pump,
 the membrane being fixed to the piston plunger by a plate, the metering pump providing the sealed assembly of a membrane, of a cover and of a seal to the reservoir, it being possible for this assembly to be a screwed or notched assembly,   the float is mounted on the lower part of the piston, which is positioned in the cylinder of the metering pump,   the cover comprises:   at its middle, the tapped through-hole into which the end-stop adjusting rod is screwed;   the inlet valve;   the outlet valve.