Metering device for syrups and other fluids

Abstract

The container ( 1 ) with dispensing nozzle ( 5 ) also comprises bellows ( 12 ); an external bellows control member ( 24 ), controlling the bellows to push the fluid out of the nozzles is regulated by means of a threaded device ( 1 G, 20 ) which regulates the stroke in order to set the volume of fluid to be dispensed at each stroke.

1 . A metering device for syrup and other fluids, comprising: container ( 1 ,  101 ,  301 ) with a dispensing nozzle ( 5 - 5 A); bellows ( 12 ,  112 ,  312 ) defining at least one part of the volume of the container; an external bellows control member ( 24 ;  124 ;  324 ;  430 ) to make the bellows collapse and push the fluid out of the nozzle; characterized in that: 
 said control member ( 24 ;  124 ;  324 ;  430 ) is slidingly guided by a rigid member ( 1 K;  118 ;  301 ;  416 ;  416 C) arranged coaxially around said container;    said control member ( 24 ;  124 ;  324 ;  430 ) is arranged opposite said dispensing nozzle ( 5 - 5 A);    and a regulating device is provided for regulating the stroke of said external bellows control member ( 24 ,  124 ,  324 ,  416 ) to predefine the volume of fluid to be dispensed at each stroke.    
   
   
       2 . Metering device according to  claim 1 , characterized in that said regulating device for regulating the stroke of the external bellows ( 112 ) control member ( 124 ) comprises a plurality of grooves ( 126 ) of different length in said rigid member ( 118 ), and at least one projecting tool ( 128 ) integral with said control member ( 124 ), said projecting tooth being capable of sliding in said grooves ( 126 ) and being angularly adjustable with respect to said first component to position said at least one projecting tooth ( 128 ) in correspondence with one of said grooves ( 126 ).  
   
   
       3 . Metering device according to  claim 2 , characterized in that said grooves ( 126 ) are longitudinal and parallel to the axis of said container.  
   
   
       4 . Metering device according to  claim 2 , characterized in that the bellows are made of elastic shape memory material to ensure or facilitate the re-expansion of the bellows and thus the return stroke of said external control member ( 24 ,  124 ,  324 ).  
   
   
       5 . Metering device according to  claim 1 , characterized in that said regulating device ( 24 ,  124 ,  324 ), for regulating the stroke of the external bellows control member, comprises two components ( 1 ,  16 ;  116 ,  124 ;  301 - 312 ,  324 ;  416 ,  401 - 412 ) which are reciprocally angularly adjustable.  
   
   
       6 . Metering device according to  claim 5 , characterized in that said two components are provided one on said control member ( 24 ;  124 ;  324 ;  430 ) and one on said rigid member ( 1 K;  118 ,  301 ;  416 ;  416 C), slidingly guiding said control member.  
   
   
       7 . Metering device according to  claim 5 , characterized in that said regulating device comprise a threaded coupling ( 1 G,  20 ;  312 ,  324 A;  416 ,  412 ) between said two components ( 1 ,  16 ;  312 ,  324 ;  416 ,  401 ) to adjust the position of a pawl ( 1 H;  301 K) along the axis of the bellows and means for reading the reciprocal rotation between the two components of said threaded coupling.  
   
   
       8 . Metering device according to  claim 7 , characterized in that the bellows ( 312 ,  412 ) are helical in shape and form one of the threaded coupling components.  
   
   
       9 . Metering device according  claim 1 , characterized in that said components ( 1 ,  16 ;  302 - 312 , 324 ) of the regulating device comprise cavities and projections ( 9 ,  18 ;  309 ,  318 ) capable of defining a plurality of reciprocal angular positions corresponding to an equal number of doses.  
   
   
       10 . Metering device according to  claim 1 , characterized in that said nozzle ( 5 ,  5 A) presents and internal helical projection ( 5 B) capable of conditioning the flow of the dosed liquid to be dispensed.  
   
   
       11 . Metering device according to  claim 1 , characterized in that said nozzle ( 5 ,  5 A) is made of elastically flexible material.  
   
   
       12 . Metering device according to  claim 2 , characterized in that said regulating device ( 24 ,  124 ,  324 ), for regulating the stroke of the external bellows control member, comprises two components ( 1 ,  16 ;  116 ,  124 ;  301 - 312 ,  324 ;  416 ,  401 - 412 ) which are reciprocally angularly adjustable.  
   
   
       13 . Metering device according to  claim 3 , characterized in that said regulating device ( 24 ,  124 ,  324 ), for regulating the stroke of the external bellows control member, comprises two components ( 1 ,  16 ;  116 ,  124 ;  301 - 312 ,  324 ;  416 ,  401 - 412 ) which are reciprocally angularly adjustable.  
   
   
       14 . Metering device according to  claim 4 , characterized in that said regulating device ( 24 ,  124 ,  324 ), for regulating the stroke of the external bellows control member, comprises two components ( 1 ,  16 ;  116 ,  124 ;  301 - 312 ,  324 ;  416 ,  401 - 412 ) which are reciprocally angularly adjustable.  
   
   
       15 . Metering device according to  claim 6 , characterized in that said regulating device comprise a threaded coupling ( 1 G,  20 ;  312 ,  324 A;  416 ,  412 ) between said two components ( 1 ,  16 ;  312 ,  324 ;  416 ,  401 ) to adjust the position of a pawl ( 1 H;  301 K) along the axis of the bellows and means for reading the reciprocal rotation between the two components of said threaded coupling.  
   
   
       16 . Metering device according  claim 2 , characterized in that said components ( 1 ,  16 ;  302 - 312 ,  324 ) of the regulating device comprise cavities and projections ( 9 ,  18 ;  309 ,  318 ) capable of defining a plurality of reciprocal angular positions corresponding to an equal number of doses.  
   
   
       17 . Metering device according  claim 3 , characterized in that said components ( 1 ,  16 ;  302 - 312 ,  324 ) of the regulating device comprise cavities and projections ( 9 ,  18 ;  309 ,  318 ) capable of defining a plurality of reciprocal angular positions corresponding to an equal number of doses.  
   
   
       18 . Metering device according  claim 4 , characterized in that said components ( 1 ,  16 ;  302 - 312 ,  324 ) of the regulating device comprise cavities and projections ( 9 ,  18 ;  309 ,  318 ) capable of defining a plurality of reciprocal angular positions corresponding to an equal number of doses.  
   
   
       19 . Metering device according  claim 5 , characterized in that said components ( 1 ,  16 ;  302 - 312 ,  324 ) of the regulating device comprise cavities and projections ( 9 ,  18 ;  309 ,  318 ) capable of defining a plurality of reciprocal angular positions corresponding to an equal number of doses.  
   
   
       20 . Metering device according  claim 6 , characterized in that said components ( 1 ,  16 ;  302 - 312 ,  324 ) of the regulating device comprise cavities and projections ( 9 ,  18 ;  309 ,  318 ) capable of defining a plurality of reciprocal angular positions corresponding to an equal number of doses.