Patent GB-190114389-A (GB)
Inventor: STRECKEISEN FRITZ
Filed: 1901-07-15
Granted: 1901-09-14
Abstract: 14,389. Streckeisen, F. July 15. Concentrating milk etc.; heating, regulating; heating, special means for; liquids, agitating and stirring; evaporators.-Relates to apparatus for heating and concentrating or thickening liquids, specially applicable for concentrating milk. Fig. 1 shows a front view of the apparatus, with parts in section. It consists of an open vessel E provided with hollow trunnions D, D', which fit in bearings C, C' carried by hollow standards B, B<1>. The trunnions D, D<1> have fitted in each of them a hollow shaft F, which are screwed to aud support a perforated shaft F<1> on which is mounted a number of hollow lenticular discs G containing holes H corresponding with the holes in the shaft. Semicircular chambers of the bearings C, C<1> have a downward opening L, coinciding with slots M in the shaft F, and through these openings the water of condensation from the steam used for effecting the evaporation falls into chambers 0, and is led off through pipes P. The liquid treated in the vessel E is removed either by tilting the vessel or by turning the gauge X downwards. The steam inlet pipe Q, which is held in position by the bearings R, is provided with perforations along its upper side. In order that the pipe may be quickly removed and again attached, a coupling T, shown separately in Fig. 5, is provided, and is mounted on an arm U of the standard B'. This coupling consists of a fork a screwed to the rod U and having at its top a collar or bush a', into which the steamsupply pipe a<2> is screwed ; the steam-inlet pipe Q is connected to an elbow q, which has a projection q<1> and a handle q<2>. The upper flange of the elbow is provided with a washer q<3>. A set-screw a<3> holds the elbow q against the collar, thereby tightening the washer. In the modified form shown in Fig. 7, the coupling T is arranged to allow the steam-inlet pipe Q to pass through it. A handle q<5> is attached to the pipe Q, whereby the latter may be turned. In this modification, a stuffing-box q', having an annular chamber k, is substituted for the elbow q, Fig. 5, and the pipe Q is provided with inlet slots k<1>. In the hollow shaft F' near its end is a ring k<2>, between which and the pipe Q is a passage for the condensed water, which accumulates in the pipe until it reaches the level of this exit, so that, by turning the handle q<5> so that the perforations face downwardly or partly so, part of the steam strikes the water and condenses, instead of passing through the openings H, so that the heating may be regulated by varying the position of the pipe Q. The discs G are rotated by the pulley J. Owing to the quick rotation, their inner surface is covered with a thin film of water, which is heated by the incoming steam, and thus the heat is transmitted to the liquid under treatment, which is not so likely to be burned as would be the case if it were heated directly by the steam. A frame V for a pulley-block or other lifting-device is provided for the removal of parts of the apparatus, which can be readily disconnected and again put together. Two or more parallel shafts may be employed in the vessel E.