A New or Improved Apparatus for Drying Granular and like Materials, Applicable also for Evaporating Liquids.
Year: 1888

page_text: Date of Application, 6th Nov., 1888
Complete Specification Left, 3rd Aug., 1889-Accepted, 6th Nov., 1889
PROVISIONAL SPECIFICATION.
A New or Improved Apparatus for Drying Granular and like
Materials, Applicable also for Evaporating Liquids.
I CHARLES HUELSER, of the firm of Huelser & Co. of 142 Fleet Street London,
Patent Agents do hereby declare the nature of this invention a communication to mo
from abroad by Max Reuland of Dortmund in the Empire of Germany Engineer
to be as follows:-
The object of this invention is a new or improved apparatus for drying granulary
or other material applicable also for evaporating liquids and essentially consisting of
a horizontal rotary drum in combination with a stationary feeding pipe or of a
stationary drum in combination with a rotary vertical feeding pipe, and of a series of
boards or wings for moving and distributing the drying material on the drum. The
latter has a conical or other suitable shape and is either flat or graduated into a
number of concentric horizontal rings with upwardly projecting rims. A convenient
number of wings or boards are suspended parallel to each other, but in an oblique
position to the drum, from an arm connected with the vertical feeding pipe situated on
the top of drum.
Said wings or boards press with their own weight on the drying surface and
move the material, fed through the pipe, down the surface or rings of the drum
on revolution of the latter or of the feeding pipe with the said arm. In the case of a
rotary drum the arm and wings may also be independent of the feeding pipe.
The drying material, after passing the surface or rings of the drum, falls into a
suitable mould in which it is completely dried or reduced by evaporation as the case
may be.
The hollow space of the drum is divided into a series of annular compartments or
heating chambers. The hot air or vapours are fed in a suitable manner either suc-
cessively or simultaneously to the chambers and pass therefrom through the hollow
supports of the drum or otherwise down into the double walls of the mould, whence
they escape through the fluc.
The peripheral projections of the annular drying surfaces serve, particularly when
evaporating liquids, to keep the surfaces constantly covered with material thus
ensuring an extensive utilization of the heat supplied.
A suitable number of ribs are provided inside at the top of the heating chambers for
the purpose of increasing the heating surface.
Dated this 6th day of November 1888.
HUELSER & Co.,
Agents to Applicant.
COMPLETE SPECIFICATION.
A New or Improved Apparatus for Drying 'Granular and like
Materials, Applicable also for Evaporating Liquids.
I, CHARLES HUELSER, of the firm of Huelser & Co. of 142 Fleet Street London,
Patent Agents, do hereby declare the nature of this invention, a communication to
me from abroad by Max Reuland, of Dortmund, in the Empire of Germany,
Engineer, and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
This invention relates to a new device for drying granular or similar material,
applicable also for evaporating liquids and principally consists in arrangements

page_text: conducive to an extensive utilization of the heat employed within a comparatively
small compass.
Referring to the accompanying drawing,
Fig. 1 is a vertical longitudinal section of the apparatus.
Fig. 2 a vertical section of a modification thereof.
Fig. 3 a top view to Fig. 1, and
Fig. 4 represents details.
The new drying apparatus, Figs. I and III consists of a stationary or rotary
graduated drum or drums A, on which the drying material is moved by means of
obliquely placed wings or boards f, so lodged in an arm revolvable about its axis,
as to be in close contact with or press upon the drum A, thus moving the drying
material successively down from one graduation to the other, until it is freely dis
charged or passed into receptacles or troughs and for additional drying. The
said wing arrangement is either stationary, or revolvable over the drum, according
as the latter is revolvable or stationary.
The drying material is supplied to the apparatus through a rotary funnel or
hopper a actuated by suitable gearing and arrives through the worms on the upper
surface of the drum, whence it passes, owing to the oblique position of the boards
or wings, successively to the graduations c d e and g. Subsequently it descends
through the pipe h or other contrivance either on a second similar plate or drum or
direct into the troughs i and i¹ in which it may be distributed by means of any suit-
able device. The said funnel may also be stationary instead of rotary.
The heating gases introduced at flow successively through the chambers 1, 2, 3
and 4, crosswise adjoining each other (Fig. 3) and communicating within the drum,
ultimately pass at through the pipe into the hollow sides of trough i and thence
through pipe 2 into the hollow sides of trough, whence they escape in any con-
venient manner.
Fig. II is a modification of the apparatus in which the drying plate or drum has a
conic shape and is either horizontally revolvable or stationary, the drying material
being moved downwards on the conic surface by means of oblique vanes or blades f
secured in a stationary or revolving holder-one side of which is shewn in the
drawing as the case may be. The heating vapours, admitted at circulate suc-
cessively through the annular compartments 1, 2, 3 and 4, communicating with each
other, and escape through pipes n' and n, unless they are conducted to a second drying
plate and so forth. The drum m, if revolvable is actuated by aid of gearing o and sup-
ported by roll p and friction rollers 9, q', while ribs are provided inside the drum for the
purpose of increasing the heating surface. The drying material is discharged over the
rim of the rotary drum on two opposite points thereof, by the lowermost board of each
side of the holder, into suitably placed and shaped pipes, which pass it respectively
into the troughs i and . Or the discharge may be effected in any other convenient
manner.
Fig. IV illustrates a stationary blade arm in side, front and top view.
The apparatus shewn by Fig. 1 is particularly adapted for evaporating liquids,
suitable rims being in that case provided to cause the liquid to cover the whole of the
annular surfaces, thereby ensuring complete utilization of heat. For evaporating
liquids the heating gases are supplied uniformly to the drum A.
Through the ribs provided within the latter, an increase of thermal radiation is
attained, thereby admitting of the application of comparatively small apparatus. The
boards or vanesfare either stationary or so arranged as to be in contact with the
surface of the drum through their own weight and thus move the drying material.
Corresponding to the nature of the latter the vanes may have weighted rollers provided
behind them serving to roll and distribute the material on the drum.
The drying plates or drums, instead of being placed in an open space, may be
enclosed in a casing as shewn by Fig. 1 in order to accelerate evaporation by a
supply of hot air in a like or similar manner as suggested by the pipe u, the waste
vapours escaping through the flues v.

page_text: Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed I declare that what I
claim is:
In an apparatus for drying granular or similar material or evaporating liquids.
1). The application of a suitable number of stationary or revolvable heating
drums A each of which is concentrically graduated and divided into a number of
communicating chambers, in combination with a rotary or stationary. funnel a,
worms and oblique vanes or boards f, Figs. 1 and 3 serving to move the drying or
evaporating material down the drum or drums and cause it to descend through pipe
or other contrivance from one drum to the other or direct into the troughs i and i¹,
substantially as set forth.
2). The application of a suitable number of rotary or stationary drying drums m
Fig. 2. having a conic or other shape and a suitable number of communicating
heating compartments, in combination with oblique vanes or boards f serving to
distribute the drying material uniformly on the upper surface of the drum or drums
and cause it to descend in any suitable manner from one drum to the other or direct
into the troughs and substantially as set forth.
3). For the purpose of accelerating evaporation, the arrangement shewn in Fig. 1,
for supplying hot air to a casing enclosing a drum or drums A and removing the
waste vapours, substantially as set forth.
Dated this 3rd day of August 1889.
HUELSER & Co.,
Attorneys.