DE202010005476U1 - separator - Google Patents

Abstract

Separator, for centrifugal separation of a suspension into at least one liquid phase and a flowable solid phase, which has the following: a) a centrifugal drum (1) rotatable about an axis of rotation (D) with a lower drum part (2) and an upper drum part (3) into which a product to be processed, can be guided through an inlet pipe (8) and a distributor (7), b) at least one liquid discharge (12) and at least one solid discharge (22), and c) a solid space (27) vertically outside a plate pack (4) , for collecting a solid separated from the suspension, characterized in that d) in the lower drum part (2) of the centrifugal drum (1) there is a discharge line (13) for tapping the solid phase, which leads from an outer radius (R13) in the solid space (27 ) in the centrifugal drum (1) leads to an inner radius (R17) of a discharge chamber (14) in the centrifugal drum (1), in which a Schälo not rotating during operation of the separator rgan (19) is arranged.

Description

The invention relates to a separator according to the preamble of claim 1.

A known separator shows the DE 10 2004 038 613 A1 , Such a separator has proven itself for the clarification of a suspension per se, but should be further optimized especially in terms of design and preferably also in its effectiveness.

So far solid phases are derived from separators on a relatively large radius of the centrifugal drum, with this derivation a relatively large energy loss occurs. Since the solid phase is still relatively well flowable, it may therefore be useful not to dissipate this phase discontinuously by piston valve, but to allow for example by nozzles on the largest inner diameter of the drum base a continuous derivative. Overall, an energy-efficient way of working is a special goal.

The invention achieves this goal by the subject matter of claim 1.

A separator according to the invention has, for the centrifugal separation / clarification of a suspension in at least one liquid phase and a flowable solid phase, a centrifugal drum rotatable about a vertical axis of rotation with a drum base and a drum top, into which a product to be processed, through an inlet pipe and a manifold feasible is. The separator also has at least one liquid discharge and at least one solids discharge, as well as a solids chamber for collecting a solid separated from the suspension. In the drum base of the centrifugal drum a derivative for tapping the solid phase is formed. This leads from an outer radius in the solids space to an inner radius of a discharge chamber. In the discharge chamber a non-rotating during operation of the separator peeler is arranged.

By diverting the solid phase from the centrifugal drum to a smaller inner radius, the energy lost in draining the solid phase is reduced. In this case, the solid phase is usually derived from the solids space outside the plate package to the inside and removed by the fixed peeling member and the adjoining solids discharge, which is concentric to the axis of rotation of the centrifugal drum, with reduced energy loss.

Further advantageous embodiments of the invention are the subject of the dependent claims.

In order to enable a cleaning of the discharge chamber, the peeling member or the solids discharge close to the axis of rotation or exactly in the region of the axis of rotation preferably has a passage opening which connects the discharge chamber, with the interior of the peeling member or the Feststoffaustrags. As a result, a portion of the solids flow is passed through the passage opening and flushes out the region of the discharge chamber. Thus, deposits or blockages can be advantageously avoided.

The solids discharge is preferably designed as a fixed discharge pipe extending concentrically to the axis of rotation. In a particularly preferred embodiment, the passage opening is arranged in the region between the axis of rotation and the inner radius of the fixed discharge pipe. As a result, the solids flow during backwashing reaches all areas in the discharge chamber.

• 1 einen vereinfachten Schnitt durch eine Schleudertrommel eines erfindungsgemäßen Separators;
• 2 eine Ausschnittsvergrößerung aus 1.

The invention will be described in more detail below with reference to the drawings with reference to an exemplary embodiment. They show:

• 1 a simplified section through a centrifugal drum of a separator according to the invention;
• 2 an excerpt from 1 ,

1 shows a simplified representation of a rotatable about a vertical axis D centrifugal drum 1 a continuously operable separator. The centrifugal drum has a drum base 2 and a drum shell 3 on, which are preferably bolted together in a manner not shown here. Such glands are known in the art and require no further discussion here. The centrifugal drum 1 is here also formed inside and outside double conical.

In the centrifugal drum 1 is a plate package 4 from a variety of plates 5 arranged concentrically to the machine axis or to the vertical axis of rotation D. The plates 5 have a conical shape, are stacked axially one above the other and by means of spacers (tabs and the like.), Not shown here, spaced from each other.

The plate package 4 is at a distribution booth 6 a distributor 7 held, which is provided on its outer circumference with radially outwardly projecting webs (not visible here), which on the inner circumference of the plate 3 intervene in this. The plate package 4 may have riser channels, which consist of directly superimposed holes in the plates 5 persist and spread over the entire height of the plate package 4 extend.

A concentrically arranged to the rotation axis D inlet pipe 8th allows the supply of a centrifuged good example here from above into the centrifugal drum 1 as well as there through the distribution 6 and through below the plate package 4 in the distributor 7 trained distribution channels 9 into the centrifugal drum 1 ,

In the centrifugal drum 1 The actual clarification of the product to be processed from a flowable solid phase (for example for sterilization) and / or a separation of the product into different liquid phases then takes place continuously.

The liquid phase L, is inwardly through the plate package 4 and one or more drainage channels into a peeling chamber 10 and from this with a peeling disc 12 slides off the drum.

For the derivation of the flowable solid phase S are no Feststoffaustragsöffnungen such as nozzles at the largest inner diameter of the centrifugal drum 1 arranged, but a discharge pipe 13 ,

This discharge pipe 13 preferably extends radially in the drum to just before the region of the largest inner diameter of the centrifugal drum and extends from this point on the inner circumference of the centrifugal drum radially inwardly to a discharge chamber 14 , The entry end 26 for picking up the solid phase is in a solid space 27 outside the plate package on a radius R ₁₃ , which is greater than the largest radius of the plate package R _4th The inlet end preferably lies in the radially outermost region of the solids space, ie in the radially outer half of the solids space 27 ,

This discharge chamber 14 is preferably between the drum base 3 and the distributor 7 - So below the distributor 7 - formed, wherein the gap between these two drum elements of a ring member 16 can be closed. The ring component 16 preferably has passage openings 17 into which the drainage pipes 13 flow inwards. The center of the passage opening is spaced with a radius R ₁₇ from the vertical axis of rotation.

In the discharge chamber 14 is at least one fixed in operation, or not rotating with the centrifugal drum peeling 19 arranged, which has a conical peeling section 20 with a discharge opening 21 having, which inwardly into a comprehensive stationary discharge pipe 22 with an inner radius R ₂₀ opens, which is formed concentrically to the axis of rotation D and further preferably lies concentrically within the supply pipe.

Due to the pressure conditions forming the product from the outer circumference of the drum radially inwardly through the at least one discharge pipe 13 to the discharge chamber 14 stream.

Thus, the product is discharged through the inner drainage pipe 13 into the discharge chamber 14 and from this with the peeling organ 19 through the discharge pipe 22 outward from the centrifugal drum 1 (here vertically upwards from the centrifugal drum 1 ).

The peeling organ 19 or the discharge pipe 22 has close to the axis of rotation D or exactly in the region of the axis of rotation D, a passage opening 23 on which the discharge chamber 14 ie the area outside the peeling organ 19 together with discharge pipe 22 with the interior of the peeling organ 19 and the discharge pipe 22 combines.

In this way, although a part of the flows through the peeling organ 19 derived industrious solid from the peeler 19 back to the discharge chamber 14 , This is advantageous because the return flow results in a cleaning of the discharge chamber 14 , This cleaning takes place on the one hand continuously during the operation of the separator. In addition, in particular, preferably an intensive cleaning in this area by selected arrangement and geometry also in cleanings such as CIP cleaning (cleaning-in-place).

Overall, an energy-saving, hygienic separator for clarifying products of a flowable solid phase is created, as may occur, for example, in the clarification of citrus fruits or in the clarification of fermentation broths or the like. The risk of contamination of the discharge area of the centrifugal drum - as described above - due to the cleaning / rinsing effect is particularly low.

In addition, the flow of the flowable solid phase through the discharge pipe 13 be controlled or regulated by a control or regulating device, not shown here. In addition, according to an alternative, additional outlet nozzles may be formed on the largest circumference of the drum.

LIST OF REFERENCE NUMBERS

D

axis of rotation

1

centrifugal drum

2

Drum base

3

Drum shell

4

Disc stack

5

Plate

6

distributing shaft

7

distributor

8th

supply pipe

9

distribution channels

10

peeling chamber

12

peeling disc

13

drain pipe

14

dissipation chamber

16

ring member

17

Through opening

19

paring element

20

skiving section

21

discharge port

22

drain pipe

26

entry end

27

Solid space

R ₄ , R ₁₃ , R ₁₇ , R ₂₂

radius

S

Solid phase

L

liquid phase

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102004038613 A1 [0002]

Claims (8)

Separator, for the centrifugal separation of a suspension into at least one liquid phase and a flowable solid phase, comprising: a) a centrifugal drum rotatable about an axis of rotation (D) ( 1 ) with a drum base ( 2 ) and a drum shell ( 3 ) into which a product to be processed, through a feed pipe ( 8th ) and a distributor ( 7 ), b) at least one liquid discharge ( 12 ) and at least one solids discharge ( 22 ), and c) a solid space ( 27 ) vertically outside a plate package ( 4 ), for collecting a solid separated from the suspension, characterized in that d) in the drum base ( 2 ) of the centrifugal drum ( 1 ) a derivative ( 13 ) is designed for picking up the solid phase, which of an outer radius (R ₁₃ ) in the solid space ( 27 ) in the centrifugal drum ( 1 ) to an inner radius (R ₁₇ ) of a discharge chamber ( 14 ) in the centrifugal drum ( 1 ), in which a peeling member which does not rotate during operation of the separator ( 19 ) is arranged. Separator according to claim 1, characterized in that the peeling member ( 19 ) or the solids discharge ( 22 ) close to the axis of rotation D or exactly in the region of the axis of rotation D a passage opening ( 23 ), which the discharge chamber ( 14 ) with the interior of the peeling organ ( 19 ) or the solids discharge ( 22 ) connects. Separator according to claim 1 or 2, characterized in that the derivative ( 13 ) extends radially and inside to below the distributor. Separator according to one of the preceding claims, characterized in that the derivative ( 13 ) as a in the operation of the separator with the centrifugal drum rotating discharge pipe ( 13 ) is trained. Separator according to one of the preceding claims, characterized in that the solids discharge ( 22 ) a not in use with the centrifugal drum rotating discharge pipe ( 22 ) having an inner radius (R ₂₂ ) which is arranged concentrically to the axis of rotation (D) Separator, according to one of the preceding claims, characterized in that the peeling member ( 19 ) a conical peeling section ( 20 ) with a discharge opening ( 21 ), which inwardly into the overarching stationary discharge pipe ( 22 ), which is formed concentrically to the axis of rotation D, wherein the passage opening ( 23 ) is arranged in the region between the axis of rotation D and the inner radius (R ₂₂ ). Separator, according to one of the preceding claims, characterized in that the derivative ( 13 ) extends in a first region along a conical wall portion of the drum base and in a second region radially to the axis of rotation (D). Separator, according to one of the preceding claims, characterized in that at or in the derivative ( 13 ) is arranged a control or regulating member, for controlling or regulating a flow of the solid phase.

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