Dispensing – Processes of dispensing
Patent
1982-02-08
1984-03-27
Tollberg, Stanley H.
Dispensing
Processes of dispensing
222500, G01F 1126
Patent
active
044388691
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a dosing device with ball valve for attachment to a liquid container, especially a preferably plastic bottle, with a valve ball which closes the discharge opening of the container in a tilted position of the latter. The invention also relates to a method to operate the dosing device.
Dosers or dosing devices which release a certain amount of liquid each time the container is tilted are known from DE PS No. 12 02 672, for Example. This container must not be flexible because small pressures exerted on the container already can lead to considerable dosing variations. In a dosing device known from DE Gm No. 78 10 073 the doses can be predetermined relatively accurately by a dosing bubble alternately sealed against the container interior and against the outside and be removed from the dosing chamber by tilting the container, but the device is not only costly to manufacture because of the two valves, but also clumsy to handle. Also, because the product is removed from the dosing chamber by tilting, it flows from the chamber under no pressure.
It is an object of the invention to design the device of the above described kind so that dosing can take place under pressure or by pressure on the container so that a "squirt" corresponding to a defined amount of product can be dosed. The solution according to the invention, for a dosing device with a valve ball closing the discharge opening of the container in a tilted position of the latter is characterized by a valve ball guide tube which has over its length at least one lateral opening leading towards the container interior and, at its end opposite the discharge opening and the sealing valve ball seat, a lower part expanding in funnel shape from the tube wall over a length corresponding sizewise to at least half the ball diameter.
What the dosing device design according to the invention achieves is that when product is removed by tilting and, if applicable, by pressure on the container, the valve ball first remains in the lower part bent in funnel shape until it rolls, when the container is tilted further into a steeper head-down position, into the valve ball guide tube, dropping into the liquid until it hits the valve seat provided at the lower end of the guide tube. Dosing is ended abruptly when it hits the valve seat. Accordingly, when tilting the container, liquid first penetrates the lateral opening of the valve ball guide tube to the outlet of the dosing device. Since--in the presence of a vent--at least the entire pressure of the liquid column in the container rests on the dosing device outlet, the product discharges from the opening or nozzle under pressure. If the container wall is made flexible, the liquid pressure can be increased considerably--also in the absence of a vent--by squeezing the container. The liquid jet produced by tilting and, if applicable, by exerting pressure can then be terminated abruptly, according to the invention, simply by tilting the container further.
Due to designing the lower part attached to the valve ball guide tube in funnel shape it is achieved that the valve ball will always sink down in the liquid so that complete emptying of the container is assured also. As to the taper of the funnel-shaped or conical lower part attachment relative to the guide tube, various aperture angles are applicable, depending on the kind, especially the viscosity, of the liquid. Preferably, half the aperture angle formed between the longitudinal direction of the tube and the surface of the funnel-shaped lower part area should be at least 30.degree., in particular between about 45.degree. and 60.degree.. The adjustment of a limited product amount by means of the dosing device according to the invention is also predetermined by the ratio of the specific weight of the valve ball used to the specific weight of the liquid to be dosed--i.e. the relative specific weight of the ball. In addition to specifying the above mentioned aperture angle, the speed with which a liquid jet is to be cut off according to the invention, according
REFERENCES:
patent: 2919056 (1959-12-01), Collins
patent: 2943767 (1960-07-01), Moro-Lin
patent: 3129859 (1964-04-01), Chappell
patent: 3146919 (1964-09-01), Chappell
Vierkotter Peter
Weltgen Paul-Otto
Henkel Kommanditgesellschaft auf Aktien
Tollberg Stanley H.
LandOfFree
Dosing device with ball valve and operating method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dosing device with ball valve and operating method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dosing device with ball valve and operating method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1750921