A quantitative liquid dispenser, comprising:
- at least one sucking disc having suction force to hang the entire dispenser on a selected location and at a desired water level on an inner wall of a toilet tank when compressed, or being sucked and adhered to a smooth surface of an anchor disc fixedly mounted to the inner wall of the toilet tank;
- a dispensing probe formed in a flat and elongate hollow duct having an U-shaped pressure trap passage to control intake of water and discharge of dilute liquid in the dispensing probe and isolate the dilute liquid from leaking, and an inverse U-shaped lid formed on a top end thereof with air vents directing downwards and separating a liquid from flowing from a top thereof by using a formed air chamber, and in inlet/outlet formed on a bottom end thereof connecting to the U-shaped pressure trap passage, the dispensing probe further having an upper section which has one side fixedly attaching to the sucking disc and another side having an upper opening, and a lower opening formed thereon;
- a dilute buffer chamber formed in a box type container for diluting concentrate liquid having one side with two openings formed thereon to communicate with and connect an upper opening and a lower opening of the dispensing probe to allow water to flow in or out of the dilute buffer chamber, and storing most of the dilute liquid;
- the dilute buffer chamber having an interior forming a sealed space with a float quantitative device hung therein;
- the float quantitative device having a lower end coupling a floating quantitative float barrel which dispenses and isolates a selected amount of the concentrate liquid into the dilute buffer chamber for dilution by principles of liquid partial pressure difference and gravity force feeding for every up and down movement;
- and
- a float quantitative dispensing device and a liquid bottle, the liquid bottle having a seal cap which has a bottom section forming a crack opening openable under compression, the float quantitative device include a base dock housed in and fastened to the dilute buffer chamber, the base dock having a channel tube located in the center thereof, the channel tube having a top end with an opening formed thereon for engaging with the liquid bottle to receive liquid from the liquid bottle, the base dock having a cylindrical drip tube located below the channel tube, the cylindrical drip tube having a bottom end with an outlet formed thereof and one side with at least one air aperture formed thereon, the position level difference between the outlet and the air aperture incurring a differential gravity to force liquid flowing out through the outlet and to allow air flowing into the drip tube through the air aperture, the quantitative float barrel being movably engaged with a lower section of the cylindrical drip tube and being movable up and down therewith, the quantitative float barrel having a cylindrical trough formed in the center thereof to match and couple with the cylindrical drip tube;
- wherein the dispenser is hung on the inner wall of the toilet tank by means of the suction force of the depressed sucking disc, water and the dilute liquid being controlled to enter in or discharged from the dispenser through the inlet/outlet of the dispensing probe through the pressure trap U-shaped passage such that the dilute liquid is isolated without leaking in static conditions, the dilute buffer chamber being located on an upper half section of the dispenser with the float quantitative device and the sealed liquid bottle located therein such that the quantitative float barrel is moved up to press against the base dock for surrounding and sealing the entire drip tube when water is fed and the quantitative float barrel is moved up and down to release and isolate a constant amount of the concentrate liquid for diluting and dispensing into a toilet for sanitary cleaning use.