DE2847465A1 - FILLED MEASURING DEVICE - Google Patents

Description

The invention is based on a feed device according to DE-AS 22 07 663. With this known device succeeded For the first time, end product filling compounds with extremely high viscosity to be processed in continuously operating centrifuges. When processing other filling compounds with comparatively less Viscosity could not only improve the quality of the spun sugar, but also exceptionally large increases in the throughput of the centrifuges can be achieved.

In addition to the special design of the filling compound inlet pipe, which in the known device with devices for supplying Is equipped with steam and water, the great success of this known device is based on the intensive mixing of the Filling compound with the steam and water supplied via the filling compound inlet pipe. This mixing is achieved by the distributor pins the acceleration pot, which the filling compound using its inertia-related relative movement in relation to the pins Spread evenly over the outer wall of the acceleration pot. The intensive contact of the filling compound with steam and hot Water allows rapid heating. This increase in temperature leads to a corresponding decrease in viscosity while the added water causes a certain "dilution" of the liquid component of the filling compound and thus an additional viscosity reduction and at the same time also softens the film-like liquid skins on the surfaces of the individual sugar crystals.

It was found that further increases in performance and quality can be achieved if the outer wall of the acceleration pot is designed as a sieve.

In the device designed according to the invention, the filling compound after exiting the filling compound inlet pipe due to their inertia captured by the distributor pins, mixed and

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spread evenly over the outer wall of the acceleration pot. Since the outer wall of the acceleration pot is designed as a sieve, the filling compound is pressed outwards through the sieve openings under the action of the pins and under the influence of the centrifugal forces. In this process, steam and condensate and water volumes that have not yet included the distribution pins in the filling material are uniformly distributed ₃ of the distributor pens over the spread of the · outer wall of the speeding pot filling material, but immediately together with the filling material through the screen openings pressed through. This results in a very intensive mixing in a small space and within an extremely short time.

ZA-PA 73/7 662 already has a filling compound feed device known for a continuously operating sugar centrifuge, which has devices for supplying steam and water equipped filling compound inlet pipe within a cylindrical Sieve ends, which is attached to the bottom of the spin basket. However, this known device lacks the distributor pins, and the distance between the filling compound inlet pipe and the floor is large. As a result, there is no forced mixing of the steam and water with the filling compound, and there is also no distribution of unmixed amounts of steam or condensate and liquid instead of on a filler surface. Instead, a separation of filling material and steam or condensate and water is favored, because the filling compound leaves considerable screen areas uncovered when passing through the screen. These open sieve areas are created as a result of the fan action of the centrifuge, very violent air currents, which remove the steam from the filling compound inlet pipe and the when the water hits the rapidly rotating surface, the resulting liquid mist, bypassing the filling compound tear away.

In order to at least partially compensate for this disadvantage, several rings of increasing diameter are used in the known device

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nested in one another in the manner of flow chicanes in such a way that the filling compound is covered several times by these rings in a veil is thrown off fanned out and caught again by the next, next outer ring. Because of the fan effect entrained liquid mist and the vapor through the the resulting veil of filling compound must flow through, one hopes for a certain wetting of the filling compound. As a result of the different Compactness of filling material on the one hand, flowing steam, flowing air and flowing liquid mist on the other hand, However, the effect is small because the specifically lighter flow media easily evade the compact filling compound parts. In addition, the repeated catching of the previously thrown off Filling compound represents a considerable mechanical load for the sugar crystals, in which the crystal surfaces are damaged will. Sugar thrown out in this way is "blind" and has lower quality than "bare" sugar.

In the known device it can also easily happen that the filling compound jet eccentrically on the bottom of the centrifugal basket and then impinges in its entirety on a limited area of the screen without an even distribution takes place over the entire scope. This uneven distribution can no longer be achieved by the subsequent rings be balanced. Restless running, possibly even emergency shutdowns due to dangerous vibrations are the result.

In the device designed according to the invention, the filling compound jet by the lower end of the lying near the bottom of the acceleration pot compared to the known device The filling compound inlet pipe is prevented from dodging inadmissibly far to the side of the axis of rotation; in addition, the distributor pins ensure for an even distribution over the circumference.

By suitable dimensioning of the sieve openings and the sieve bars, the passage of the filling compound through the outer wall of the acceleration pot can be influenced within wide limits.

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Large sieve openings and narrow ridges accelerate the passage of the filling compound and reduce the effect of the distributor pins, if certain, of the particular nature of the filling compound dependent limits are exceeded. The course of the sieve bars also influences the flow behavior of the filling compound on the Outer wall of the acceleration pot. In particular, the spread of the filling compound in the axial direction through inclinations of the Sieve bars are promoted or inhibited, while axially parallel bars on the distribution of the filling compound in the axial direction behave neutrally and favor the distribution in the circumferential direction.

Strong mixing effects can be achieved with screens that consist of rods; the filling compound then becomes special as it passes through strongly deflected. If the rods are intertwined, the result is optimal mixing effects.

An embodiment of the device designed according to the invention is shown in the drawings:

1 shows an axial sectional view of the device designed according to the invention;

Fig. 2 shows a detail on an enlarged scale;

Fig. 3 shows a sectional view of the outer wall of the acceleration pot the device designed according to the invention.

1 shows a filling compound feed device designed according to the invention 1 for continuously operating sugar centrifuges.

The main components of the filling compound feed device 1 are a filling compound inlet pipe 2, an acceleration pot 3 with distributor pins 4 and an acceleration bell 5.

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The filling compound inlet pipe 2 has a steam jacket 6. Steam outlet holes 7 guide the steam from the steam jacket 6 into the interior of the Püllmasseexnlaufrohres 2, the Füllstoffeinlaufrohres 2 is also equipped with known devices for feeding water, but not shown in FIG. 1.

The acceleration pot 3 has a base 8. The distribution pins 4 are held in this base 8.

The essence of the invention is that the outer wall 9 of the acceleration pot 3 is designed as a sieve 10.

For the mechanical stabilization of this sieve 10, four are used radially pins 11 attached to the bottom 8 outside the sieve 10, which with an upper ring 12 and a lower ring 13 form a cage form. At the upper end of this cage are U-shaped retaining brackets 14, which include the distributor pins 4 attached.

The filling compound arrives in the form of a free-falling filling compound jet together with steam and water on the bottom 8, is moved outwards and spread over the sieve 10 ^{with the help of the Verteuerst if te 1 J.} Steam and water are incorporated into the filling compound. If: the filling compound passes through the sieve 10, further intimate mixing of steam, water and filling compound is achieved.

The sieve 10 consists of interwoven, axially parallel and bars 15 and 16 extending in the plane of rotation high mechanical stress, it is recommended to manufacture these rods 15, 16 from wear-resistant material.

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Claims (3)

BRAUNSCHWEIGISCHE MACHINENBAUANSTALT Am Alten Bahnhof 5 3300 Braunschweig Filling mass feed device Claims Filling material feed device for continuously operating sugar centrifuges with an upwardly open, frustoconical Centrifugal basket that rotates around a vertical axis of rotation, and with a coaxial to the axis of rotation of the Centrifugal basket arranged filling compound inlet pipe, which has devices for supplying steam and / or water, at the top one from bottom to top into the inside of the centrifuge basket protruding hub of the centrifugal basket, an acceleration pot is attached, in the bottom, which is in a is arranged a small distance from the lower end of the filling compound inlet pipe, several axially parallel to the centrifugal basket axis of rotation running distributor pins are attached at a short distance from the outer wall of the acceleration pot, while at the upper ends of the distributor pins an acceleration bell that widens conically towards the lower end of the centrifugal basket is attached coaxially to the axis of rotation of the spin basket, characterized in that the outer wall (9) of the acceleration pot (3) is designed as a sieve (10). 030020/01 15 2. Apparatus according to claim 1, characterized in that the upper edge of the outer wall (9) designed as a sieve (10) of the acceleration pot (3) is connected by U-shaped retaining brackets (1 ¹ O to the distributor pins (4). 3. Device according to claims 1 and / or 2, characterized in that that the sieve (10) that the outer wall (9) of the acceleration pot (3) forms, made of woven fabric-like interwoven, parallel to the axis of rotation of the spin basket arranged rods (15, 16) extending at right angles thereto. ¹ I. Device according to one or more of claims 1 to 3, characterized in that the bars (15, 16) of the sieve (10) consist of wear-resistant material. The invention relates to a filling compound feed device for continuously operating sugar centrifuges with a top open, frustoconical centrifugal basket that is perpendicular to one another running axis of rotation rotates, and with a coaxially to the axis of rotation of the centrifugal basket arranged powder inlet pipe, the means for supplying steam and / or water, wherein at the upper end one from bottom to top into the The inside protruding hub of the centrifugal basket is an acceleration pot is attached, in the bottom, which is at a small distance from the lower end of the Füllstoffeinlaufrohres is arranged, a plurality of axially parallel to the centrifugal basket axis of rotation extending distributor pins at a small distance from the Outer wall of the acceleration pot are attached, while at the upper ends of the distributor pins one to the lower end of the Centrifugal basket conically enlarged acceleration bell is attached coaxially to the axis of rotation of the centrifugal basket. ■ - 3 030020/0115