Adjustable and sealable jet nebuliser for bottles able to be elastically deformed by squeezing

An adjustable and sealable jet nebuliser for a bottle that is elastically deformable by squeezing, able to be mounted on a mouth of a neck of a bottle and comprising a liquid conduit with first and second ends, the liquid conduit being connected, at the first end by a check valve, to a suction tube which draws a liquid contained within the bottle from under a volume of air;

• the liquid conduit terminating at the second end in a mixing chamber provided with a central exhaust orifice through which the liquid is discharged outwards form the mixing chamber;
• an air conduit communicating with said volume of air contained within the bottle, said air conduit surrounding the liquid conduit and merging into said mixing chamber, where the liquid flowing from the liquid conduit mixes with the air flowing from the air conduit, wherein
• said air conduit and said liquid conduit are obtained coaxially in a cylindrical body, which has a portion projecting from the mouth of the bottle neck;
• said cylindrical body presenting on its projecting portion an external thread to be engaged with an internal counter-thread obtained on a screw-on cap, provided with the central exhaust orifice, wherein the screw-on cap has a cylindrical wall, to be inserted between the air conduit and the liquid conduit, to create said mixing chamber, with variable geometry, defined by a portion of the liquid conduit, by an inner portion of the screw-on cap and by the cylindrical wall;
• wherein
• said liquid conduit has on its second end an arm oriented upwards, bearing, at its free end, a tip cap, able to be fully inserted into said central exhaust orifice whilst the screw-on cap is screwed onto the cylindrical body, until sealing the nebuliser,
• and wherein said internal counter-thread of the screw-on cap have mutual contrast means able to prevent the complete unscrewing of the screw-on cap from the cylindrical body, said mutual contrast means being constituted by at least one anti-unscrewing tab fastened tangentially to the cylindrical body and by an abutment, obtained inferiorly in the screw-on cap, which mutually engages the anti-unscrewing tab when the screw-on cap is unscrewed to the maximum extent without being freed from the thread.