DE2264177C2 - Mash for treating a filling compound in the sugar industry - Google Patents

Description

45

The invention relates to a mash for treating a filling compound in the sugar industry, which consists of a standing, cylindrical container with horizontal agitator arms attached to a shaft and alternating heat exchanger devices and an inlet at one end and an outlet at the other end of the container.

Such a mash is known from AT-PS 59 260; in the container of the same are among each other Plates are provided, which alternate with edges on their moderate opening or on their outer edge are provided and thereby bring about a forced guidance of the filling compounds in zigzag form. Because of the small amount of land provided above the plates, rotating stirring arms in the form of Shoveling an intensive mixing of the filling compound in the container is brought about.

The invention is based on the idea that Filling mass in the mash as unhindered as possible Let it »sink« in order to influence the crystallization of the filling compound as little as possible.

The object is achieved in that the container is formed without Umlenkvorriehiungen and the heat exchanger devices from tubes or Exist ring surfaces.

Since the Rührarmc should be rotated as slowly as possible and on the other hand the filling compound through the gaps can sink between the tubes or the ring surfaces, the growth of the crystals can largely take place unhindered.

Although it is from US-PS 27 43 298 a Lalbzylindircher known horizontal container, which is open at the top and alternating in vertical planes and agitators Contains cooling coils, however, with this horizontal mashing measures are necessary in order to transport the filling compound not only in the upper areas of the container, but also in the direction of the outlet enable; apart from that, the horizontal mash takes up a much larger area than the vertical mash according to the invention, which can also be manufactured at particularly great heights.

The mash according to the invention ensures that the density of the filling compound - when the same is cooled - steadily increases in the direction of the lower outlet, whereby a perfect throughput of the mash is achieved. Since no deflection devices are provided, the sinking of the crystallizing Fill mass done largely perpendicular. The construction of the mash according to the invention is simple and enables containers with a considerable volume.

According to a preferred embodiment of the invention, the containers have a flat bottom give away and the shaft hung at its upper end. This way the stress becomes the suspension of the shaft in the main bearing is significantly reduced: any sealing measures are no longer necessary on the shaft bearings; the maintenance and lubrication of the shaft is simplified. Need it no intermediate bearings to protect the shaft from kinking to be provided. Because of the strong reduced friction in the two bearings will do that Friction torque is noticeably reduced, which means that the necessary drive power can be reduced: this applies in particular to the drive torque, which as Measure for the total density of the filling compound is to be considered.

The lower end of the shaft is expediently gelagcri in a guide sleeve: the shaft can be provided with blades at the bottom end.

According to one embodiment of the invention, the heat exchanger devices Cn are designed as cooling devices and the inlet ^{for the} filling compound is provided at the upper end of the container and the outlet for the filling compound is provided laterally at the lower end of the container.

According to another embodiment of the invention, the heat exchange devices are heating devices formed and the inlet of the filling compound laterally at the lower end of the container and the outlet the filling compound is provided at the upper end of the container. In this Atisführungform the outlet can a gutter, which flows through an overflow over the upper edge of the container is blocked.

In the drawing, for example, there are exemplary embodiments the invention shown; they are explained in more detail below: it shows

F i g. I a vertical section in a schematic representation through an embodiment. the invention.

F i g. FIG. 2 shows a vertical section in a schematic representation through another embodiment of FIG

Invention and

F i g. 3 shows an overall arrangement in a schematic representation unicr use of the embodiment according to F i g. 1 and F i g. 2.

A container 10 in the form of an elongated cylindrical shape The drum with a vertical axis has a cylindrical shell 11 and a flat bottom 12.

Through the container 10 can be a filling material from one to the bottom in the vertical direction from top to bottom inlet 13 arranged at the upper end of the container 10 to one at the lower end of the container 10 arranged outlet 14 flow.

A vertical hollow shaft 15 runs coaxially inside the container and carries agitator arms 16. These agitator arms are designed as radially extending arms. which are arranged in successive horizontal planes. The hollow shaft 15 can be set in slow rotation and for this purpose is mounted at its upper end in an axial bearing 17 which is provided above the level N of the filling compound contained in the container 10.

At the lower end, the hollow shaft 15 is in a Guide sleeve 18 mounted. No seals are required at the bearing points for the hollow shaft 15. which makes maintenance much easier. The arrangement described is extraordinary simple and robust construction for the storage of the hollow shaft 17 created.

In the area of the outlet 14, the hollow shaft 15 is provided with blades 16, which are intended to prevent the filling compound from coming to a rest in the vicinity of the base Y1 and to facilitate the exit from the outlet 14.

Heat exchanger devices 20 are provided in order to lower the temperature of the filling compound according to a predetermined program during its movement y-, from top to bottom from inlet 13 /. 'In outlet 14 / u. The heat exchange devices 20 are designed as tubes or ring surfaces which are arranged in horizontal planes and which alternate with the agitator arms 16.

During de. Bciriebes the filling compound is introduced through the inlet 13: it penetrates the container in Movement downward and is discharged through outlet 14. During this passage movement the filling mass passed from the agitator arms 16 and at the same time gradually from the heat exchanger devices 20 cooled. In the lower section of the container 10, the density of the filling compound is thus greater than in the upper section.

Several mashes of the related mil F i g. 1 can be a cooking apparatus downstream in order to bring about the crystallization of the sugar during the production of the same.

According to FIG. 2. the in their arrangement of the embodiment similar to Fig. I, it is a container 10 'with a heating device and not with a cooling device. The same reference numerals are used in FIG. 2 as in FIG. 1 but with a dash ('). The dimensions of the container 10 'largely correspond to those of the Container 10.

The inlet 13 'is in this embodiment at the lower end of the container 10, during the Outlet 14 'is located at the upper end. The outlet 14 'is attached to a channel 21 which is the upper end of the container 10 and which is fed by the overflow of the filling compound. The marked 20 ' Heat exchange devices in this case consist of heating devices. The filling compound has like; m previous case a greater density in the lower area than in the upper area.

■ The in F i g. The mash shown in FIG. 2 can be used in particular to heat the filling material for the purpose of decarbonation prior to centrifugation at the end of a crystallization cell. The heating in the container 10 'takes place very slowly with a view to a secondary crystallization effect. which takes place relatively slowly, especially with by-products. According to FIG. 3, a mash 10 according to FIG. 1 upstream of a mash 10 'according to FIG. 2 in the direction of flow, a battery of horizontal mashes 22 connected in series being interposed. The mashes 10 and 10 'can be cleaned to supplement an existing battery of mashes 22. In this way, the Verarbeitungskapaz can ^- .aet a sugar factory with only a slight increase in boost of Crundfliichenbedarfs.

1 sheet of drawings

Claims (7)

Patent claims: 1. Mash for treating a filling compound in the sugar industry, consisting of a standing, cylindrical container with horizontal, attached to a shaft s Rührarraen and alternately arranged heat exchanger devices and an inlet at one end and an outlet at the other end of the container, characterized in that the container (10, W) is designed without deflection devices and the heat exchanger devices (20, 20 ') consist of tubes or annular surfaces. 2. Mash according to claim i, characterized in that that the container (10, 10 ') is provided with a flat bottom (12) and the shaft (15, 15') is on its the upper end (17) are suspended. 3. Mash according to claim I or 2, characterized in that the shaft (15, 15 ') with its the lower end is mounted in a guide sleeve (18). 4. Mash according to claim 3, characterized in that the shaft (15, 15 ') on the bottom The end is provided with blades (19,19 '). 5. Mash according to one of the preceding claims. characterized in that the heat exchanger devices are designed as cooling devices (20) and that oer inlet (13) for the Filling compound at the upper end of the container (10) and the outlet (14) for the filling compound laterally at the lower end End of the container (10) are provided. 6. Mash according to one of claims I to 4, characterized in that the Wärmeaustauschcreinrichtungcfi designed as H <'/ devices (20') are in the daC the inlet (13 ') of the filling compound J5 laterally at the lower end dc ^> 3ehältcrs (10 ') and the outlet (14') of the filling compound at the upper end of the Container (10 ') are provided. 7. Mash according to claim 6, characterized in that the outlet (14 ') on a channel (21) is appropriate. which through an overflow over the upper edge of the container (10 ') is fed.