Drop forming drum for the manufacture of pastilles

Details Drop forming drum for the manufacture of pastilles Drop forming drum for the manufacture of pastilles

1996-08-30

1998-06-23

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Means making particulate material directly from liquid or...

By slinger or rotating liquid comminutor

264 13, 425365, 425382R, 425464, B30B 1120

Patent

active

057702357

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

The invention pertains to a device for manufacturing pastilles comprising a rotatable, horizontally installed drum with openings around its entire circumference; a laterally attached material channeling device mounted around its circumference; a stationary interior body installed inside this drum forming a sickle-shaped gap between a portion of its circumference and the interior surface of the drum, whereby the end of the gap that constitutes a leading end thereof with reference; to the turning direction of the drum is located in the lowest part of the circumference of the drum; a feeder device for a viscous, free-flowing liquefied material that exits through the openings of the drum in the form of drops; and a conveyor or cooling surface below the drum for transporting the drops exiting from the drum.
Devices of this kind are known from EPO 339 325-A1, corresponding to U.S. Pat. No. 5,013,498. These devices are designed with a channel installed in an axial direction inside the stationary interior body for supplying the free-flowing liquefied material and with connection borings leading from the channel to a gap located in an axial direction at the circumference of the interior body, whereby the interior body is provided with a strip equipped with nozzles through which the material is forced out and enters the drum because of the cyclical rotation of the openings of the drum past the nozzles, from where it is transported onto a cooling surface. The gap which is eccentrically provided in these devices serves, exclusively for syphoning back into the drum through its openings, residual liquefied material that has not exited in the form of drops, is adhering to the exterior of the drum, before the openings become aligned again with the axial gap and the nozzle strip.
The exchangeable nozzle strips make devices of this kind suitable for the production of pastilles from a wide variety of meltable material. They are, however, relatively complex.


SUMMARY OF THE INVENTION

The invention is based on the realization that the process of forming the drops can surprisingly also be performed exclusively with the aid of the known eccentric gap, and that no additional installation of nozzle strips or other devices is required if the gap is designed large enough.
The object of the invention of providing a simpler device for manufacturing pastilles of the above type is therefore met by a sickle-shaped gap which is designed large enough to receive at least the amount of liquefied material to be shaped into drops; and by the feeder device for the liquefied material consisting of a channel formed by the end of the feeder device which is located a front or entrance side of the drum, together with an extender strip located against the upper circumference of the drum. With such a device, the meltable material can first enter from outside through the openings of the drum into the gap disposed in the interior of the drum, from where it is then forced from the drum in the form of drops in the area below the lower end of the material channeling device through the effect of the continuously narrowing cross section of the channel.
The above object of the invention may, however, also be met--based on the realization according to the invention--by designing the sickle-shaped gap large enough to receive the quantity of material to be shaped into drops, as in the above design, and creating the feeder device from the hollow interior body and an opening of the hollow interior body extending into the gap narrowing in the direction in which the drum turns. Such a device, too, can in unexpected ways serve to form drops from melted material which are then cooled or gelatinized into pastilles.
In an improvement of the inventive idea, the feeder device of both designs may be adjustably mounted around the axis of the drum, so that the area in which it rests against the drum becomes adjustable along the circumference of the drum. The size of the area that is available between the end of the eccentric gap and the end of

REFERENCES:
patent: 3786645 (1974-01-01), Cann
patent: 4029459 (1977-06-01), Schmiedeke
patent: 4397628 (1983-08-01), Pinto et al.
patent: 4623307 (1986-11-01), Froeschke
patent: 4963084 (1990-10-01), Froeschke
patent: 5013498 (1991-05-01), Froeschke
patent: 5286181 (1994-02-01), Schwager
patent: 5332378 (1994-07-01), Harreither
patent: 5382145 (1995-01-01), Harreither
patent: 5401938 (1995-03-01), Froeschke et al.
patent: 5492463 (1996-02-01), Schwager

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