DE19537268C1 - Plate for the spinning drum of centrifuge for the removal of cream from milk - Google Patents

Abstract

A plate (1) for the spinning drum of a centrifuge, for the removal of cream from milk, comprises holes (2) and point spacer members (4) on its upper side. the spacers allow the milk, which has had the cream removed, to flow via a curved path to the outer plate edge. The separation area (3) between two adjacent plates is divided into a separate zone and an acceleration zone, and the acceleration zone contains spacers which promote curved flow of the milk.

Description

The invention relates to a plate for the Centrifugal drum for skimming milk, with risers provided in the plate and on it Top punctiform spacers are arranged that a curvilinear flow of the to the outer edge the plate of skimmed milk pouring in the through two allow adjacent plates formed separation space.

DE-PS 5 03 286, for example, is one such Known plate, of which a large number in the sluice dertrommel are provided. This plate shape has ins proven and proven especially in skimming milk almost exclusively used for this. Through the curves shaped flow of milk in the between the Separation spaces formed to the outside of the plate towards a particularly good separation of cream and lean milk obtained. How to separate other products lead uninterrupted spacer strips used when skimming milk to unsatisfactory results However, the curvilinear flow creates a much larger flow resistance than the ra dial flow pattern for plates with spacer strips. Especially with plates with a very large diameter can this flow resistance will be so great that the entrains capacity of the plates due to the limited  Throughput can not be used.

The invention has for its object the known Train plates so that without affecting the Separating effect the flow resistance is reduced.

This object is achieved in that the separation space in at least one separation zone and one acceleration zone is divided, with only the punctiform in the separation zone spacers and in the acceleration zone Ab Stand strips are provided, which are curved Prevent flow in the acceleration zone.

Surprisingly, it has been shown that the zone a significant reduction in flow wi is possible without the efficiency of the plate affect. This will result in significantly higher throughput services with a satisfactory separation effect aims.

In an advantageous embodiment, the acceleration is supply zone is provided radially outward from the separation zone. The milk flowing out of the risers becomes too next skimmed in the separation zone in the usual way. On the current is closed by the acceleration zone resistance and thus the throughput improved.  

In a further advantageous embodiment is radial a further separation zone away from the acceleration zone ne provided. This separation zone causes a particularly good separation effect, since it is in the strongest centrifugal field of the Plate is provided.

The extent of the acceleration zone should not exceed 50% the extent of the separation space so that the separation effect of the separation area is retained.

In an advantageous embodiment, the Er Extension of the acceleration zone 30% of the extension of the Separation room. As a result, the predominant area of the Separation room available for efficient skimming.

An embodiment of the invention is in the drawing shown and will be explained in more detail below. It shows

Fig. 1 shows the section II of FIG. 2 by two adjacent plates

FIG. 2 shows a top view of the plate according to FIG. 1.

With 1 in Fig. 1, the plates are designated, which are provided with risers 2 and form a separation space 3 between them, which is divided into a separation zone "T1", an acceleration zone "B" and a further separation zone "T2" . In the separation zones "T1" and "T2" only punctiform spacers 4 are provided on the surfaces of the plates 1 , which allow a curvilinear flow flow of the skimmed milk flowing to the outer edge of the plates 1 . In the acceleration zone "B" 1 spacer strips 5 are provided on the surfaces of the plates, which prevent the curvilinear flow of the skimmed milk.

The milk supplied via the riser holes 2 flows in a curved path to the outside diameter of the plate 1 and is partially skimmed in the separation zone "T1". In the subsequent acceleration zone "B" the partially skimmed milk is at the angular velocity of the separation room 3 . accelerates and thereby increases the radial component of the flow velocity of the milk. This leads to a reduction in the flow resistance of the separation room 3 and enables an increased throughput through the separation space 3 . In the subsequent separation zone "T2", which is provided in the largest centrifugal field, the milk is finally skimmed.

Claims (5)

1. Plate ( 1 ) for the centrifugal centrifuge for skimming milk, with holes ( 2 ) provided in the plate ( 1 ) and punctiform spacers ( 4 ) arranged on its upper side, which have a curved flow profile to the outer edge of the plates ( 1 ) flow the skimmed milk in the separation space ( 3 ) formed by two adjacent plates ( 1 ), characterized in that the separation space ( 3 ) is divided into at least one separation zone (T1, T2) and an acceleration zone (B) , wherein in the separation zone (T1, T2) only the punctiform spacers ( 4 ) and in the acceleration zone (B) from spacer strips ( 5 ) are provided, which prevent the curvilinear flow in the acceleration zone (B). 2. Plate according to claim 1, characterized in that the Acceleration zone (B) radially outward from the separation zone (T1) is provided. 3. Plate according to claim 1 or 2, characterized in that radially outward from the acceleration zone (B) further separation zone (T2) is provided.   4. Plate according to one of claims 1 to 3, characterized in that the extent of the acceleration zone (B) carries a maximum of 50% of the extent of the separation space ( 3 ) be. 5. Plate according to one of claims 1 to 4, characterized in that the extent of the acceleration zone (B) is 30% of the extent of the separation space ( 3 ).