EP3148701A2

EP3148701A2 - Separator

Info

Publication number: EP3148701A2
Application number: EP15725318.8A
Authority: EP
Inventors: Wilfried Mackel; Andreas Penkl; Thomas Bathelt; Kathrin Quiter; Marie-Theres Sedler
Original assignee: GEA Mechanical Equipment GmbH
Current assignee: GEA Mechanical Equipment GmbH
Priority date: 2014-05-28
Filing date: 2015-05-26
Publication date: 2017-04-05
Anticipated expiration: 2035-05-26
Also published as: HUE057395T2; EP3148701B1; DK3148701T3; SI3148701T1; ES2907031T3; WO2015181175A3; EP3862096A1; PL3148701T3; CN106413905A; DE102015108272A1; US20170189915A1; WO2015181175A2

Abstract

A separator for the treatment of a flowable product by centrifugation, having a rotatable drum (2) which delimits a centrifuging space (15) and comprising, arranged in said drum (2), an agent for the clarification of a product to be treated in the centrifugal field, is characterized in that the drum (2) comprises an outer support and an inner drum (12) arranged in said outer support, and in that the agent for the clarification of the product to be processed in the centrifugal field is arranged in the inner drum (12).

Description

separator

The invention relates to a separator according to the preamble of claim 1. Centrifugal separators for the realization of a continuous operation have long been known, so in an embodiment as nozzle separators from JP 62 - 1 17649 A. In addition to nozzle separators are those known with solids discharge, to which a hydraulically actuated piston valve is assigned, with which the Feststoffaustragsöffnungen closed and can be released. A separator without solids discharge in a training as a separator shows the US

2,017,734. US Pat. No. 2,286,354 also shows a separator with solid drum base and drum shell parts screwed together.

From WO 2014/000829 A1 a generic separator for separating a flowable product into different phases or for clarifying a product is also known, which has a rotatable drum with a drum base and a drum top and an arranged in the drum means for clarifying, wherein one, several or all of the following elements made of plastic or a plastic composite material: the drum base, the drum shell, the means for clarifying. Thus, it is possible to design a part of the drum or preferably even the entire drum - preferably in addition to the inflow and outflow systems or areas - for a single use, which is particularly of interest for the processing of pharmaceutical products such as fermentation broths or the like The advantage is that after the operation for processing a corresponding product batch in the continuous operation during the processing of the product batch, no cleaning of the drum has to be carried out but the drum can be exchanged overall. Especially from a hygienic point of view, this separator is very advantageous. It is therefore desirable - and this is the object of the invention - a further improvement of the running properties and also the handling of the generic construction. The invention solves these problems by the subject matter of claim 1 and the remaining independent claims.

According to the characterizing part of claim 1, it is provided that the drum has an outer support device and a drum arranged inside the support device, called inner drum. Furthermore, a means for clarifying (or for optimizing the clarification effect) of the product to be processed in the centrifugal field is arranged in the inner drum. In this way, the running behavior of the rotating system, in particular the drum, is significantly improved in a simple manner, since the outer support device stabilizes the system. Since this support device is located radially outward relative to the drum wall, which delimits the drum interior, the actual drum bounding the centrifugal space is hereinafter referred to as "inner drum".

According to a variant, the outer support device is designed as an outer ring, which axially surrounds the inner drum in sections. Such a "bandage" type ring stabilizes the structure on the outer circumference.The at least one stabilizing ring (or rings) is preferably made of metal, but may also be made of a plastic or a plastic composite material. A contour, for example an annular pocket open axially in one direction, is provided on the outer circumference of the inner drum into which the stabilizing ring is inserted It is also conceivable, however, that the outer support device is designed as a grid-like outer ring which surrounds the inner drum on a specific axial section.

According to another variant, the outer support device is formed as an outer drum, which surrounds the inner drum in whole or in sections. Especially in this way, the running behavior of the rotating system, in particular the drum is significantly improved, as the outer drum dynamically and mechanically stabilizes the system. Both deflections of the rotating system in the radial direction to the axis of rotation D and the tendency to unbalance can be significantly reduced. Both the inner drum and the support structure can - but need not - be designed relatively thin-walled. In particular, preferably to be changed after processing a product batch internal drum can be made very material-saving.

Nevertheless, it remains possible to take advantage of the material "plastic" or "plastic composite", because it is also possible, a part of the drum - the inner drum and preferably its components - in particular together with the inlet and outlet systems or areas - be designed for a single use, so that after the operation for processing a corresponding product batch during the processing of the product batch preferably continuous and sanitary operation no cleaning of the drum is carried out but the drum is replaced altogether. This replacement is particularly easy because the outer drum, which is preferably reused, does not require much cleaning since it preferably does not come into contact with the product being processed at all. It therefore does not have to be cleaned and / or disinfected each time the inner drum is changed or only for a relatively short time.

Also, the change of the inner drum and its assembly, disassembly and other handling can be carried out in a simple manner, since there is a stable outer drum construction in which the inner drum only has to be used, it is possible the drive connection to an electric motor only on the outer drum provide, so that the internal drum removed in a change only from the outer drum and another internal drum must be reinserted into this, without the need for many complicated assembly steps such as the preparation of a drive connection to the drive shaft are necessary.

The outer drum can completely surround the inner drum. But there is also already a good stabilization of the rotating system when the outer drum axially surrounds the inner drum only in sections, preferably over at least 50% of the axial length of the inner drum or more.

In the latter case, it is advantageous if the inner drum protrudes axially out of the outer drum, which makes it easier to clearly separate and space the inlet and outlet areas of the inner drum from the outer drum.

It is particularly advantageous if the inner drum and the outer drum made of different materials, since in each case the optimal materials can be selected for both elements outer drum and inner drum. Preferably, the inner drum of a turn preferably relatively thin-walled plastic or a plastic composite, so that they can be easily disposed of and the reusable outer drum made of metal, especially steel, so that their running properties are particularly easy to optimize. It is also advantageous that when using a metallic outer drum and an inner drum made of plastic, the weight of the outer drum can significantly exceed that of the inner drum, so that the rotational behavior is essentially determined by the outer drum. Preferably, the weight of the rotating parts of the metallic outer drum is more than twice as large, in particular more than four times as large as the weight of the rotating parts made of plastic or as the weight of the empty inner drum. By the outer drum, it is also possible to design the inner drum particularly thin-walled, since it is stabilized by the outer drum. In order to use the inner drum in the outer drum well and easy, it is advantageous if the outer drum has an outer drum base and a detachable outer drum upper part. On the other hand, it is advantageous for reasons of production, for example, if the inner drum has an inner drum lower part and an inner drum upper part which can be preassembled or preassembled therewith. For it is necessary to place in the inner drum in the manufacture of various elements such as the means for clarifying, a supply pipe and the like., Which is simplified by the separation in the upper part and lower part. Particularly easy is the assembly of the inner drum in the outer drum when the outer drum shell is formed in the manner of a ring which is bolted to the outer drum base and which is axially formed open at the top, so that the inner drum shell protrudes axially out of it. The outer drum base and the outer drum top can also be connected in other ways. An advantageous variant is a connection with bolts. Also conceivable is a bayonet as a connecting means. Finally, it is advantageous to connect the outer drum upper part and the outer drum lower part to one another with a locking ring or to fix them relative to one another. For this purpose, preferably a lower edge of the outer drum shell is inserted into the outer drum base, where it can rest on a collar. Then, a ring with external thread is screwed from above into an internal thread of the outer drum base, which fixes the outer drum shell on the outer drum base. In order to realize a safe rotation possible without slippage between the inner drum and the outer drum, it is advantageous if the inner drum and the outer drum are non-rotatably and / or positively connected with each other rotatably.

For reasons of hygiene, it is also advantageous if a feed system and a drainage system of the drum are formed exclusively on the inner drum, so that the outer drum does not come into contact with the product to be processed during operation. Preferably, the feed system and drain system are formed in a sealed manner on the inner drum. In a further embodiment, it is advantageous if the inlet system and the drainage system have a cover ring body which is designed as a part not rotating during operation with the drum and if the inlet system has an inlet tube which is designed as a rotating element with the drum. For this purpose, the cover ring body is preferably non-rotatably connected to an abutment of the separator outside the drum.

As a result, the transition of the product is realized in the rotating system already at the inlet of the inlet pipe, which simplifies the construction of the inner drum. The delivery system is preferably designed centripetal pump free. From rotating channels between pipe ends / Aabschnitten the phases to be derived flow in annular spaces in non-rotating Abdeckringkörper and from there into non-rotating discharges and downstream tanks or the like.

However, it is also conceivable, according to a less preferred variant, which is structurally more complex, to realize the drainage system with the aid of one or more plastic grippers which guide the one or more separate phases in the centrifugal field out of the drum in the manner of centripetal pumps.

According to a further development, which is also to be regarded as a separate invention - according to the wording of claim 55 - are at least one or more of the tubular elements of the drum in the annular body axially displaceable and it is a device for releasably fixing the tubular element in an axial position provided in the ring body. Thus, the construction in a simple way for the

Transport stabilized and can not solve. Only at the installation site, this fuse is released so that these elements can rotate relative to each other. This construction is useful in an internal drum but also in a drum without internal drum, for example, in the manner of WO 2014/000829 A1.

It is also advantageous if the transport lock is used when removing the drum. For this purpose, the transport lock after / when removing the inner drum is reactivated so that it can be easily removed and disposed of. Line ends can be closed again (for example, by adhesive or by clamping or latching).

Overall, it is particularly advantageous for handling reasons, if the inner drum, in particular the entire inner drum, is preferably designed in addition to the inlet and outlet system as an exchangeable preassembled module. Preferably, this module consists entirely or at least predominantly (ie in particular more than 70%, in particular more than 80% of the weight of the module) made of plastic or a plastic composite material. It is also conceivable to limit locally reinforcements, eg of metal or plastic or other suitable material, in the Provide area of the inner drum. The inner drum also forms the independent subject matter of claims 62 to 84.

The actual inner drum is designed as a circumferentially closed drum which extends around the axis of rotation of the drum and preferably forms a self-supporting unit. This self-supporting unit is dimensionally stable in such a way that it retains its shape after it has been placed on the outer drum base without an outer drum shell attached (at a standstill, that is not rotated). It is therefore not in this embodiment, a kind of non-dimensionally stable bag or the like .. The inner drum is also preferably not materially connected to the outer drum, i. it is not a coating of the outer drum or the like.

It is the outer drum shell preferably have such a large central opening that it can be plugged from above the Abdeckringkörper with its inlet and outlet nozzles and possibly attached hoses that need only be connected after assembly. In this way, the assembly of the inner drum after removal of the outer drum shell is particularly easy and fast to implement.

The means for clarifying a product to be processed of a per volume fraction more solids-containing phase than the other phase is preferably and advantageously again a separator plate of conical separator plates made of plastic, but may for example also a one-piece Klär- / Abscheideeinsatz plastic according to the type of DE 10th Preferably, the separator drum is used to further concentrate a product, ie, it becomes with the means for clarifying one per unit volume more solids-containing, but preferably still just flowable phase separated from a phase containing less solids. The term "means of clarification" is to be construed relatively, and refers to this application, where the means of clarification serves to further concentrate the product or to obtain a concentrated phase. Overall, even with the concept of the inner drum, a part of and preferably even all of the product-contacting areas of the rotating system consist of a plastic or a plastic composite material, in particular the inner drum lower part and the inner drum upper part and the disk package. Preferably and with regard to a single use advantageously also consist of the inlet system and the drainage system wholly or predominantly of plastic or a plastic composite material.

It is advantageous if all or at least the predominant parts of the inner drum that rotate during operation and the parts of their inlet and outlet systems that do not rotate during operation - if they come into contact with the product - are made of plastic - and if all in all - except if necessary to be provided seals - the number of only a few parts, eg Plastic injection molded parts, are provided. In addition / alternatively, pipe sections may be formed as sleeves made of metal, or parts of the inner drum or in / on the inner drum, in particular pipe sections with one or more sleeves made of metal, may be reinforced.

Preferably, these are the inner drum base, the inner drum top, the manifold, the precipitating means (preferably the plate insert for separating solids), a separator plate and the Abieiter. In addition, there may be seals. In this way, a functional centrifuge drum made of plastic is created, which consists of only a very few components, which makes their production and assembly very easy. The elements divider plate and inner drum shell could also be integrally formed. In this case, the drum top would be provided directly with one or more channels through which, as on a disc plate or similar, one or more phases may flow from a larger diameter portion in the drum to its tip to a discharge from the rotating system. It is also particularly advantageous if the inner drum base and the inner drum shell are inseparably connected to each other during the initial assembly to prevent it from being attempted to dismantle it and, if necessary, to reuse it after inadequate cleaning. Instead, the inner drum is fully permanently disposed of or recycled. This is also advantageous that the sterility is guaranteed. The design is preferably such that no air can penetrate from the outside into the inner drum before installation and after removal. With the concept of the inner drum, it is furthermore possible, as in WO 2014/000829 A1, to design a part of the drum or preferably even the entire drum-preferably in addition to the inlet and outlet systems or areas-for a single use, which is particularly advantageous for the processing of pharmaceutical products such as fermentation broths or the like. Of interest and advantage, since after operation for processing a corresponding product batch during the processing of the product batch preferably continuous operation no cleaning of the drum is carried out but the drum is replaced altogether. Hygienic problems associated with cleaning are thereby easily eliminated. The product-contacting parts can be disposed of completely or recycled. Disposal is of particular interest for hazardous substances. It is again also conceivable to carry out a clarification of a product primarily a concentration of a product to be processed and to melt the inner drum after processing a batch or, for example, in an acid or the like. Dissolve to recover the heavy material as a residue of this process , By using preferably thin-walled plastic parts, the production costs can also be kept relatively low.

It is again advantageous and particularly hygienic if the entire drum, in particular its inlet system and its drainage system, is constructed in a sealed design.

The plastic used is preferably a recyclable plastic, in particular PE (polyethylene), PP (polypropylene) or TK-PEEK (in particular partially crystalline) polyether ether ketone. Also conceivable are, inter alia (and this is not an exhaustive list) the materials PC (polycarbonate)), MABS (methyl methacrylate-acrylonitrile-butadiene-styrene), ABS (acrylonitrile-butadiene-styrene) and PSU (polysulfone). The parts made of plastic could be produced by injection molding and, if necessary, be reworked, for example, provided with holes and the like, where it is necessary. Screws and the like. Can also be made of plastic, but they can, especially if they are not touched by the product during processing, also be made of a different material.

A further particularly advantageous invention is specified in the claims, which relate to an advantageous drum for a separator, provided as an inner drum (claim 62) and their advantageous developments. Especially the inner drum of the invention is particularly smooth running and thus well suited as an inner drum for an outer drum. Particularly noteworthy are the integrated means for clarifying in the inner drum as well as the advantageous form-fitting means provided for further development for the surprisingly safe and good transmission of torque between inner drum and outer drum. Because a purely clamping entrainment of the inner drum has proved less optimal due to effects such as slippage and the like. The inner drum is so well suited for single use - especially pre-treated by radiation such as gamma radiation.

Further advantageous embodiments can be found in the remaining subclaims. The invention will be described in more detail by means of embodiments with reference to the figures. It shows:

1 shows in a) a view of a separator according to the invention with a direct drive and housing and drum shown in cutaway, in b) a more detailed and enlarged representation of an outer peripheral area of a separator drum, in c) and d) alternative embodiments of the area a), in e) a more detailed and enlarged view of an inlet and outlet area of the separator drum of Fig. 1 a; and in f) an ne enlarged view of an outer peripheral region of another separator drum.

FIG. 2 shows a section through an inlet region of a separator drum; FIG.

Fig. 3 in a) a section through another inlet region of a separator drum and in b) and c) sections perpendicular to the view a) once in a transport and once in a non-transport position;

4 shows a section through an inlet region of a separator drum; and

Fig. 5, 6 and 7 are sectional views of a portion of Fig. 1 a in alternative embodiments.

1 shows a section through the region of a housing 1 and a drum 2 of a separator according to the invention, with which a liquid product in the centrifugal field can be separated into two phases. The drum 2 has a vertical axis of rotation D. Terms used hereafter, such as "top" or "bottom", refer to the orientation of elements of the separator with respect to this vertical axis of rotation.

The housing 1 has a lower bottom 3, a housing shell 4 and an upper cover 5. The bottom 3 in turn has a passage 6, which is penetrated by a rotatable drive spindle 7. Preferably, a drive motor 8 is arranged directly below the bottom 3. Alternative embodiments are conceivable, for example one in which the drive spindle 7 is driven by a drive belt or the like, the drive motor then being arranged elsewhere. However, preference is given to a direct drive, in particular of the type of FIG. 1, in which the drive shaft of the motor is arranged directly in the vertical extension of the drive spindle 7. It is preferably dispensed with a separate storage of the spindle design, which makes the construction simple and relatively inexpensive feasible. This construction is simple and robust and very good for lightweight drum construction suitable. The function of the storage of the drum takes over in a simple manner, the electric motor or its rotor bearing

On the vertically upper end of the drive spindle 7, in turn, the drum 2 is mounted non-rotatably relative to the drive spindle 7, so that they can be rotated by the drive spindle 7 and the drive motor 8 in rotation.

The drive spindle 7 could be rotatably mounted in the housing 1, here in the bottom 3, with one or more bearings. However, it can also be dispensed with such storage. Rather, a gap 9 is formed between the outer circumference of the drive spindle and the inner periphery of the passage 6 of the bottom 3. Such a storage of a drive shaft 10 in the motor housing of the drive motor 8, on which the drive spindle 7 is fixed or on which it is formed in a different way, in a simple manner for the storage of the entire rotating system consisting of the drum 2 and the drive spindle. 7 exists to be used. Thus, it is also preferred that the drive spindle 7 is coupled directly to the output shaft of the motor and that the drive spindle 7 has no additional pivot bearing - for example, no neck bearing and no Fußlager - on its outer circumference. Preferably, no spring system is provided for resilient support in the region of the drive spindle. A seal 72 provides a seal of the gap 9. The seal 72 may be, for example, a mechanical seal or other suitable seal in the annular gap 9 between the relatively rotating parts 3, 7. Hereinafter, the structure of the drum 2 explained, the considerably deviates from the structure of known constructions.

For the drum 2 has an outer drum 1 1, which can also be formed as Außentrommelab- cut - and an inner drum 12.

Preferably, the outer drum section or the outer drum 11 and the inner drum 12 are made of different materials. Preferably, the outer drum 1 1 made of metal, in particular steel, and the inner drum 12 is made preferably completely or at least partially, in particular predominantly, of a plastic or a plastic composite material.

The outer drum 1 1 serves as a kind of holder, in which the inner drum 12 is inserted. This holder surrounds the inner drum 12 in the vertical or axial direction at least partially full circumference or summarizes it. Preferably, the outer drum 1 1 and the inner drum 12 are rotatably connected to each other. This can be realized in particular by a positive and / or frictional connection between the outer drum 1 1 and the inner drum 12.

The outer drum 1 1 has an outer drum lower part 13, which can be designed essentially like the lower drum part of known separators without an inner drum or here. The outer drum lower part 13 is mounted in a torque-proof manner on the drive spindle 7 and preferably has a simple or here preferably double-conical inner shape on the inside, which leads to a good rotational and separating behavior on the separator drum. The outer drum 11 further preferably has an outer drum upper part 14. The outer drum lower part 13 and the outer drum upper part 14 preferably have corresponding threads 71, in the region of which they are screwed directly to one another. Here, the thread of the outer drum base section is designed as Innengwinde the drum base and the thread of the outer drum shell 14 as a corresponding external thread.

The outer drum shell 14 is also conical. It is further formed as a ring which is rotatably connected below with the outer drum base 13 and which is open at the top, so that the inner drum 12 vertically or axially upwardly out of the outer drum, here from the outer drum shell 14 protrudes. The outer drum upper part 14 preferably extends only into the conical section of the inner drum upper part 17 so that the latter still protrudes vertically upwards from the outer drum upper part 14 with a part of its conical area (preferably more than 20% of the vertical length of this area). It has been shown that this already leads to a very good turning behavior. The outer drum shell can be reduced to a conical ring. Since the outer drum base 13 and the outer drum shell 14 are preferably made of metal, in particular steel, and preferably at least the drum base is designed as a separator drum without inner drum 12, they can provide largely the smoothness and stability and safety of a known modern separator drum made of metal. Since the outer drum 1 1 surrounds the inner drum 12 partially or completely outside, stabilizes the outer drum, the inner drum. In particular, the outer drum 11 advantageously contributes to optimizing the running properties of the entire drum 2 during operation at high speed. In addition, the wall thickness of the inner drum 12 can also be chosen much thinner than that of a separator drum made entirely of plastic without an outer drum 11, as proposed in WO 2014/000829 A1.

The inner drum 12, however, limited to the outside the actual Separierbzw. Centrifugal space 15 for the centrifugal processing of a flowable product.

With regard to its shape, the inner drum 12 is configured in such a way that it preferably rests substantially directly on the inner circumference of the outer drum in a form-fitting manner. The inner drum 11 has an inner drum lower part 16 and an inner drum upper part 17. Preferably, the inner drum base 1 6 and the inner drum shell 17 are each formed conically, so that a doppelkonischer body is formed. The parts 1 6 and 17 are made of plastic or a plastic composite material and are liquid-tightly connected to each other, in particular in the upper (inner drum base 1 6) and lower (inner drum shell 17) flange portions 18, 19 (see Fig. 1 b).

Preferably, a cohesive connection between the inner drum base 1 6 and the inner drum shell 17 and possibly other elements of the Innentrom- mel 12 is provided, which can be achieved in the sense of this document, for example, by a fusion but also by gluing. There are also other types of connection conceivable, such as a bayonet between the elements to be connected Innentrommelunterteil 1 6 and inner drum shell 17. Figs. 1 c and 1 d illustrate each different connection variants between the elements to be connected lower inner drum part 1 6 and inner drum shell 17, in which these are connected to each other via a latching connection.

For this purpose, one or more first and second latching means 60, 63 are provided either on the inner drum upper part 17 (FIG. 1 c) or on the inner drum lower part 16 (FIG. 1 d), which cooperate with a corresponding latching edge or

Contour are provided on the other inner drum part. The first latching means 60 may be formed as one or more axially formed on the outer circumference of the inner drum shell 17, extending axially in the direction of the inner drum base (r) webs 61 with a radially inwardly projecting locking contour 62, which the inner drum base 1 6 at the outer peripheral edge - which thus forms the counteracting means - engages under. Alternatively, the webs 61 may be formed with a radially inwardly projecting locking contour 62 on the inner drum base 1 6 and the inner drum shell 17 on the outer peripheral edge - which thus forms the Gegenrastmit- tel 63 - overlap.

There are also other connection variants between the inner drum base 1 6 and the inner drum shell 17 advantageously realized, so screw with plastic screws and nuts or the like. (Not shown here). It is also a convenient connection, when the inner drum base and the inner drum shell are clamped together at its outer periphery with one or more brackets (not shown here). These types of connections between the inner drum parts 1 6, 17 are easy to handle, inexpensive to implement and yet very reliable. Between flange portions 18, 19 between the inner drum base 1 6 and the inner drum shell 17 may be axially at least one preferably circumferential sealing ring 64 may be arranged to ensure the tightness of the (plastic) lnnentrommel (Fig. 1 c and 1 f). This sealing ring 64 may be a separately inserted sealing ring or be designed as a sealing ring strip, which is molded onto one or both of the flange portions.

According to FIG. 1 f, the inner drum lower part 1 6 and the inner drum upper part 17 each have in the region of their largest outer circumference upwards (inner drum lower part 16) or lower (inner drum upper part 17) open channels U-shaped in cross-section 82, 83, which in FIG assembled state of the inner drum 12 engage each other and form a circumferentially closed in cross-section annular space 84. In this case, the sealing ring 64 is arranged in the annular space 84. When turning, it lays out radially and widens, so that the annulus or the interior of the inner drum 12 is well sealed. In addition, a lock such as a catch can be formed between the inner drum base 16 and the inner drum upper part 17. Advantageously, the outer drum lower part 13 extends vertically upward in FIG. 1 f so that it radially outwardly stabilizes the inner drum in the region of the grooves 82, 83.

In FIG. 1 f, moreover, the inner drum upper part 17 is screwed to the inner drum lower part with a stepped locking ring 85, wherein corresponding threads 86 are formed between the locking ring 85 and the inner drum lower part 17, and wherein the locking ring 85 engages the inner drum upper part 17 against the inner drum lower part 16 suppressed. Also, a very good sealing effect is supported.

To a here lower portion 20 of the inner drum base 1 6 closes axially upwards as a separate part or as an integrally connected to the inner drum base, the axis of rotation D coaxially surrounding distributor, in particular manifold approach 21 (see again Fig. 1 a), which is a complete Distributor for introducing the centrifuged material in the inner drum interior or centrifugal space 15 and to accelerate the centrifuged material in the circumferential direction during rotations of the drum 2 forms.

In the distributor extension 21, for example, a blind hole-like bore is formed in the upper region, into which a feed pipe 23 opens. The inlet pipe 23 can also be formed directly on the manifold approach or be formed in one piece directly with this in another way. The inlet pipe 23 and the manifold approach 21 form a preferably advantageously sealed against the environment designed inlet system. The inlet pipe 23 is preferably axially upwardly out of the inner drum shell 17 and rotates during operation with the drum 2.

The distribution approach 21 opens at the lower end in one or more distribution channels 24, which are formed obliquely to the axis of rotation and open here also obliquely into the actual centrifugal space 15.

In the centrifugal chamber 15 separating means or means for clarification, in particular a one-piece or preferably multi-part plate package 25 are arranged, which is formed as a stack of axially spaced separating plates 26, which have a conical basic shape and which are preferably placed against rotation on the distribution leransatz 21 , The separation means for clarification could also be formed in other form, such as ribbed bodies with radial or arcuate ribs. The separation plates 26 have the same or different radii.

The manifold approach or manifold 21 may also be integrally formed with the means for clarification, if this is designed as a clear plastic insert with clarification chambers according to the type of DE 10 2008 052 630 A1. An introduced into the inner drum interior or centrifugal space 15 product is separated in the drum 2 in different, preferably two, product phases of different density. To derive the various product phases from the drum 2 is a drainage system with two or more drainage areas.

Thus, a lighter liquid phase flows radially inward and there (see Fig. 1 a and e) in a channel 27 outside the manifold approach 21 axially upwardly into an annular channel 28, which between the outer circumference of the inlet pipe 23 and a pipe section 29 of larger diameter is formed, which also protrudes from the top into the inner drum shell 17. Below this piece of pipe 29 is a conical plate attached, in particular glued or molded, which is arranged in the manner of an upper Scheidetellers 30 above the Trenntellerpaktes, wherein it is spaced from the drum shell, so that between the drum top and the disc plate, a gap is formed. At the lower end here is a flange-like peripheral edge 31 (see Fig. 1 b) between the flange 18, and 19 of the inner drum base 16 and the inner drum shell 17 set and preferably firmly adhered to these, which stabilizes the arrangement of the disc plate 30 and the whole Construction gives additional strength.

A heavier liquid phase (or a solid phase which is still just able to be discharged, in particular just a little flowable) is moved from the region of the largest inner circumference of the drum interior through one or more bores 32 in the radially outer region of the separator plate into the gap 33 between the inner drum upper part 17 acting as a channel and the divider plate 30, and preferably into a second annular channel 34 - or in one or more channels, which are preferably spaced by ribs, - between the pipe surrounding the inlet pipe 29 and an axial pipe extension 45 of the inner drum shell 17th

The heavier and the lighter liquid phase flow from the annular channels 28, 34 upwards in each case in axially superimposed annular spaces 35, 36 in a cover ring body 37 which is not rotatably mounted (in a manner to be explained) on the housing 1. It is advantageous to dispense with nozzles or the like which lead radially out of the drum for discharging solids, so that there is no contact between the interior of the drum and the surrounding drum in the container.

The cover ring body 37 is preferably stepped and has in its vertically uppermost area a connecting piece 38 as a connection possibility for a supply line 75 (which can be seen in Fig. 2 and explained in more detail below). Starting from the connecting piece 38, the cover ring body 37 widens in stages. The inside hollow connecting piece 38 opens into a axially uppermost annular space 39 on the inner circumference of Abdeckringkörpers 37, in which extends axially from below the upper end of the inlet pipe 23, which rotates during operation of the centrifuge with the drum and which opens into the annular space 39, but at any point of the annular space 39 spaced apart from the cover ring body 37. Thus, in a simple manner, the transition of the incoming and to be processed centrifuged material in the rotating system. Downwardly, each of the annular spaces 39, 35, 36 is preferably each bounded by a sealing arrangement 40, 41, 42 on one or more (here two) sealing rings, which are arranged between the outer circumference of the inlet tube 23 and the inner wall of the annular space. As sealing arrangements 40, 41, 42 are preferably provided in each case two axially spaced-apart sealing rings in particular in the manner of mechanical seals.

Below the uppermost sealing arrangement 40, the cover ring body 37 widens further on a next step. Between the inlet pipe 23 and the inner circumference of the cover ring body 37, the middle annular space 36 between the outer circumference of the inlet pipe 23 and the inner circumference of the cover ring body 37 is formed here below the uppermost seal arrangement 40 and above the middle seal arrangement 41. This serves to dissipate the light liquid phase. For this purpose, a further connecting piece 43 may be formed on the cover ring body 37, which preferably extends radially or obliquely away from the remaining cover ring body 37. The pipe end, which adjoins the separator plate 30, opens from below into this annular space 36. Between the outer circumference of the pipe section 29 and the inner circumference of the Abdeckringkörpers 37, the central sealing arrangement 41 is arranged.

Below the middle sealing arrangement 41, the cover ring body 37 expands further on a next step. Between the outer circumference of the pipe section 29 and the inner circumference of the cover ring body 37, the annular space 35 between the outer circumference of the pipe section 29 and the inner circumference of the cover ring body 37 is formed below the middle seal arrangement 41 and above the lower seal arrangement 42. This lower annular space 35 is used for discharging a relative to the lighter heavier liquid phase from the rotating system.

For this purpose, a further connecting piece 44 may be formed on the cover ring body 37 which extends (here obliquely) preferably radially away from the remaining cover ring body 37. Between the outer circumference of the tubular extension 45 of the inner drum shell 17 and the inner circumference of the Abdeckringkörpers 37, the lower seal assembly 42 is arranged.

Leakage chambers 80 may be formed on the sealing arrangements 40, 41, 42, from which leakage fluid can flow out of the rotating system through connecting stubs 81, lines and / or leakage reservoirs in turn being connected to the connecting stubs 81).

Below the seal assembly 42, the ring body 37 widens further. It is fixed by means of fasteners at its lower peripheral edge at an upper opening of the housing, which pass through the annular body and the pipe socket 45 and the inside of the pipe approach this interspersed elements. This setting can be done for example by means of circumferentially distributed screws 22 which are screwed to the housing 1 (preferably on the cover 5). The annular body 37 may for this purpose have corresponding threaded screw 73.

To the inner drum and the outer drum 12, 1 1 in a simple manner rotatably but releasably connected to each other at a standstill, it can be provided that the inner drum 12 is positively and / or non-positively connected to the outer drum 1 1.

In a simple way, a frictional connection can be realized in that the flange portions 18 and 19 and the outer edge 31 of the divider plate 30 extend into the Verschraubungsbereich between the outer drum base and the outer drum shell, where they rest on gradations of these parts and when screwing the drum shell be clamped in the drum base between these screwing (Fig. 1 b). In addition, interlocking means such as ribs 87 (and / or grooves) on the outer circumference of the inner drum and corresponding grooves 88 (and (or ribs) may be provided on the inner circumference of the outer drum 1 1, which interlock and thus rotatably the two elements inner drum 12 and outer drum 1 1 connect (Fig. 1 a).

It has proven to be particularly advantageous if one or more of the ribs 87 outside (on the outer surface or the outer shell of the outer drum) preferably circumferentially distributed on the inner drum base 1 6 and correspondingly one or more of the grooves 88 outside (on the inner surface facing the inner drum) circumferentially distributed on the outer drum base 13 are formed. The outer drum base part 13 is advantageously of double conical design and has an inner conical region 13a and an oppositely directed outer conical region 13b. The inner drum base 16 has a corresponding double-cone shape with an inner conical region 16a and an outer conical region 16b. The one or more interlocking means, in particular ribs 87, is / are preferably formed on the outside of the inner conical region 16a of the inner drum base 1 6 and protrude from this and the corresponding positive locking means, in particular grooves / recesses 88, are / are corresponding to the one inner conical portion 13a of the inner drum shell 13 formed on the inner surface thereof. Especially the arrangement in a / this area close to the drive spindle 7 allows a very good and a very high smoothness guaranteeing torque transmission from the outer drum to the inner drum. A torque transmission in other areas outside of the inner and outer drum is also conceivable.

In operation, moreover, the inner drum 12 will expand radially against the inner circumference of the outer drum 11, which improves the torque transmission and rotating entrainment of the inner drum 12 by the driven outer drum 11. Alternatively, it would also be conceivable to connect the parts of the outer drum with each other in a detachable manner, such as with bolts or the like or by means of a bayonet. Such a part of or there are preferably even all of the product-contacting areas of the rotating system made of plastic or plastic composite material, in particular the inner drum base 1 6 and the inner drum shell 17. Preferably further, the separation plates 26 are made of plastic as well as all or almost all of the product-contacting Areas of the inlet system and the drainage system, even if they do not rotate during operation. Thus, the inner drum 12 can be disposed of after processing a sufficiently large product batch. The preferably metallic outer drum 1 1, however, is used again. Since it can not come into contact with the product during operation, its cleaning is very simple or less important. Through the outer drum 1 1, the inner drum 12 can be made quite thin. With a complete disposal falls accordingly very little plastic waste.

1 shows an embodiment as a two-phase separation machine (separation of a product into the phases: "liquid / liquid"), three-phase machines (for separation into three phases) are also feasible (not shown here) .The product is preferably, but not necessarily a fermentation broth to be concentrated

In this way, preferably the entire inner drum together with the inlet and outlet system is preferably designed as an exchangeable preassembled module made of plastic or a plastic composite material.

In this case, the outer drum section 1 1 essentially serves as a holder for the inner drum 12, which in particular improves the running properties of the inner drum 12.

The design of the outer drum shell as a ring is optimized in the trial. In this case, it can be determined up to which conical region the annular outer drum cover or the outer drum upper part must surround the inner drum upper part.

Hereinafter, the structure of the housing 1 will be considered in more detail. The housing 1 has the bottom 3, a preferably cylindrical housing shell 4 and the cover 5 on. Only in the area of the cover ring body 37, the housing comes into contact with the disposable after an operation plastic area.

The bottom 3 is formed here as a separate bottom plate 46. Preferably - but not mandatory - the bottom plate 46 is designed round. On the bottom of the housing shell 4 is arranged. Here, an edge region of the base serves as a flange-like bearing surface 47 for a lower flange section 48 of the housing shell 4 which is cylindrical in a preferred embodiment. The housing jacket 4 further has an upper flange section 49 on which the cover 5 is screwed tight.

The base plate 36 can be used to rest on an abutment, not shown here, such as a foundation or a machine frame. For this purpose, bores 74 are also formed in the flange section 48, on which the flange section can be fixed to the abutment (for example with screws not illustrated here).

It is advantageous that the housing 1 has a drain opening 59, preferably in its bottom 3, through which possibly liquid can flow - which occurs in the housing, for example due to an unforeseen leakage or which would otherwise collect there. At a connection of the opening 59, a drain such as a drain hose for discharging this liquid can be arranged in a container. A particularly compact design is achieved in that - as already mentioned - the drive motor is preferably an electric motor, which is arranged directly in the axial extension of the drive spindle 7, preferably on the side facing away from the drum side. Preferably, the drive spindle 7 is connected directly to a bolt axially with the output shaft 10. It is also connected to a torque transmission means, preferably a key, in the circumferential direction with the output shaft of the electric motor rotatably connected (not shown here). The torque transmission means can also be provided in another form - For example, as a torque transmission contour - are formed (not shown here). At the motor 8, a terminal box 75 is arranged.

The rotatable drum 2 may be connected to the drive spindle structure by a press fit (e.g., in a tapered section) or by other torque transmitting means (not shown). The motor 8 is here fastened to its spindle 7 side facing further with a flange portion 50 at the bottom of the housing 1, for example screwed with bolts. On the motor 8, a terminal box 51 is further arranged.

There are still described advantageous ways of securing the transport of the rotating system made of plastic. As explained above, it is possible to replace the plastic rotating system from time to time. For this purpose, the invention also provides a device for at least axial securing of the cover ring body 37 on an element of the rotating system of the separator of the inner drum at least in the transport state, i. in not mounted in the outer drum and in the housing 1 state.

Since the annular body, as a non-rotating part in operation with the parts rotating in operation, with which it forms annular chambers, only via the gasket assem- blies 40, 41, 42 is connected, would exist without a means for at least axial transport locking the risk that the cover ring body 37 could solve axially. In operation, on the other hand, this does not exist, since both the inner drum 12 are supported directly on the housing 1 via the outer drum base on the motor and via this on the housing 1 and the cover ring body 37 and are thus fixed in position relative to one another.

FIG. 2 shows an upper section of the cover ring body 37 with the connecting piece 38 as connection possibility for a hose-like supply line 75, and an upper section of the inlet pipe and the upper sealing arrangement 40. The hose-like supply line 75 (and similarly hose-like discharge lines on the further connecting pipe 43, 44) is / are preferably adhesively attached to these preassembled. The hoses can be connected to the connections be taped turned ends. Before putting into operation, the glued ends are cut off and welded with a piece of tubing that comes, for example, from the fermenter. Also conceivable are other variants for connecting the hoses and nozzles and for closing open ends if necessary. Thus, coupling elements are conceivable for the connection, which are designed, for example, latching or it is a closing of the ends with cable ties or similar elements conceivable.

2 to 4 also show the inlet pipe 23 in an axially further (here upward in the direction of the upper connecting piece 38) in the body 37 eingebe- nen state (dashed line) and in a slightly further axially downwardly moved state (solid Line). The dashed state or the further inserted state of the inlet pipe 23 indicates the transport state and the non-dashed the installation state in the outer drum 1 1 for the operation. In Figs. 2 to 4 are variants of the means for at least axial securing of the cover ring body to an element of the rotating system of the separator of the inner drum at least in the transport state, i. in not shown in the outer drum 1 1 and mounted in the housing 1 state. The axial transport lock is based on a force and / or positive connection.

After 2, a combined force and form-fitting is realized. Here, a projection 53 arranged on a leaf spring 52, for example a pin, engages in an annular groove 54 on the outer circumference of the inlet tube 23 in its further inserted state into the cover ring body 37. The force of the spring is chosen such that a good transport safety is realized, but that it is still possible to solve after transport during assembly, the transport lock by a targeted axial movement of the inlet pipe down. According to Fig. 3, such a positive connection in an annular groove 54 of the inlet pipe 23 is achieved in that a radially inwardly projecting web 55 engages the Abdeckringkörper 37 inside the annular groove 54 of the inlet pipe 23. By a taper / chamfer 56 at the free upper end of the inlet pipe 23 can its insertion in the dashed lines illustrated transort position, in particular before the disposal of the rotating system or before the first transport done.

To loosen the cover ring body 37 must be rotated so that the web 55 with a radial groove 57 above the annular groove 54 is aligned. In this position, the discharge pipe can be pulled into its non-dashed operating position shown (see Fig. 3b, c).

According to Fig. 4, a releasable adhesion is achieved in that a kind of clamping ring 58 (similar to a tensioning hose clamp) placed outside the Abdeckringkörper 37 and tightened so that it presses the Abdeckringkörper 37 non-positively on the outer circumference of the further inserted supply pipe 23.

FIGS. 5 and 6 illustrate that locally reinforcing elements can also be provided inside the drum made of plastic, in particular the inner drum. Here, these reinforcing elements are formed as sleeves 76, 77, 78. These sleeves are protectively radially between each one of the seal assemblies 40, 41, 42 and the associated inner tube / pipe section / pipe extension 23, 29, 45 and reinforce them. Alternatively, one or more of the sleeves may themselves also form a section of a pipe / pipe section / pipe extension 23, 29, 45. Such a configuration is shown in FIG. 7. In this case, a sleeve 23a forms an axial end of the inlet tube 23. Radially outside the sleeve 23a, the sealing arrangement 40 is arranged. The sleeves 23a, 76, 77, 78 can be designed to be insulating or thermally conductive depending on the requirement. They are preferably also made of plastic (preferably a high-temperature resistant and preferably high-strength plastic). But it is also conceivable and preferred to manufacture them in other ways, such as other materials, including plastic composites or other composites. Conceivable are reinforcing elements, in particular made of glass, metal, plastic-metal compounds (eg plastic with metal fabric for the dissipation of heat). These may be separated during recycling or disposal. It is particularly advantageous that the sleeves 23a, 76, 77, 78 heat less due to the choice of material than the / the remaining tube / pipe section / pipe extension 23, 29, 45. In particular, this applies when the sleeve 23a, 76, 77, 78th made of metal. It is again particularly advantageous if the sleeve virtually alone a pipe section of the tube / pipe section / pipe extension 23, 29, 45 forms.

If the sleeve - e.g. 23a - itself forms a section, in particular an end of a pipe, it is expedient, this firmly with the rest

Pipe / pipe section / pipe socket 23, 29, 45 preferably inseparably connected. In the latter case it makes sense to attach the sleeve to the remaining one (s)

Stick pipe / pipe section / pipe socket 23, 29, 45 or put them when spraying the plastic pipe into the appropriate shape, so that an intimate connection is created in particular between metal and plastic. The sleeves 23a, 76, 77, 78 and the tube / tube piece / tube extension 23, 29, 45 may also overlap one another in sections or in each other (FIG. 7).

In one embodiment, it sleeve of metal, the sleeve has a relatively large heat capacity, so that it does not heat up too much especially at startup of the drum to operating speed. This in turn preserves temperature-sensitive elements, in particular the mechanical seals arranged in their region, which preferably adjoin them.

6, one or more of the sleeves 76, 77, 78 - here at the inner peripheral edge - one or more grooves, in particular annular grooves 79, or one or more chambers, which contributes to reducing heat conduction by the formation of air chambers and therefore the adjacent elements, in particular seals - protects. reference numeral

Housing 1

Drum 2

Floor 3

Housing jacket 4

Cover 5

Implementation 6

Drive spindle 7

Drive motor 8

Gap 9

Drive shaft 10

External drum 1 1

Inner drum 12

External drum base 13

Conical regions 13a, b

Outer drum shell 14

Centrifugal space 15

Inner drum base 16

Conical regions 1 6a, b

Inner drum shell 17

Flange areas 18, 19

Section 20

Distributor approach 21

Screws 22

Inlet pipe 23

Distribution channels 24

Plate package 25

Separating plate 26

Channel 27

Annular channel 28

Pipe piece 29

Divider plate 30

Peripheral edge 31

Bores 32

Gap 33

Annular channel 34

Annular spaces 35, 36

Cover ring body 37

Connection nozzle 38

Annular space 39

Sealing arrangement 40, 41, 42

Connecting piece 43

Connecting piece 44

Pipe extension 45

Bottom plate 46

Bearing surface 47

Flange section 48 Bores 49

Flange section 50

Terminal box 51

Leaf spring 52

Lead 53

Annular groove 54

Footbridge 55

Rejuvenation / chamfer 56

Radial groove 57

Clamping ring 58

Drain opening 59

Latching means 60

Footbridges 61

Locking contour 62

Latching means 63

Sealing ring 64

Thread 71

Seal 72

Screws 73

Bores 74

Supply line 75

Sleeves 76, 77, 78

Ring grooves 79

Leakage chambers 80

Leakage pipe 81

Gutters 82, 83

Annular space 84

Lock ring 85

Thread 86

Ribs 87

Grooves 88 vertical axis of rotation D

Claims

claims

Separator for the centrifugal processing of a flowable product, having at least the following features:

a. a rotatable drum (2) defining a centrifugal space (15) and

characterized in that

b. the drum (2) has an outer support device and an inner drum (12) inserted and arranged in the outer support device, and in that

c. a means for clarifying the product to be processed in the centrifugal field in the inner drum (12) is arranged.

Separator according to claim 1 or 2, characterized in that the outer support device is designed as at least one outer ring which surrounds the inner drum (12) axially in sections.

Separator according to claim 1, 2 or 3, characterized in that the outer support device is formed as a circumferentially closed outer ring, which surrounds the inner drum (12) axially in sections.

Separator according to claim 1 or 2 or 3 or 4, characterized in that the outer support device is designed as a grid-like outer ring which surrounds the inner drum (12) axially in sections.

Separator according to one of the preceding claims, characterized in that the outer support device is formed as an outer drum (1 1), in which the inner drum (12) is arranged.

Separator according to claim 6, characterized in that the outer drum (1 1) serves as a holder, in which the inner drum (12) is inserted.

7. Separator according to one of the preceding claims, characterized in that the outer drum (1 1) axially surrounds the inner drum (12) only partially.

8. Separator according to one of the preceding claims, characterized in that the outer drum (1 1), where it surrounds the inner drum (12), is formed circumferentially closed ..

9. Separator according to one of the preceding claims, characterized in that the entire inner drum (12) is designed together with an inlet and outlet system as an exchangeable, pre-assembled module.

10. Separator according to one of the preceding claims, characterized in that the outer drum (1 1) completely surrounds the inner drum (12) in the circumferential direction.

1 1. Separator according to one of the preceding claims, characterized in that the outer drum (1 1) surrounds the inner drum (12) axially completely.

12. Separator according to one of the preceding claims, characterized in that the outer drum (1 1) axially surrounds the inner drum (12) only partially.

13. Separator according to one of the preceding claims, characterized in that the inner drum (12) projects axially from the outer drum (1 1).

14. Separator according to one of the preceding claims, characterized in that the inner drum and the outer drum (12, 1 1) consist of different materials

15. Separator according to one of the preceding claims, characterized in that the inner drum (12) consists of plastic or a plastic composite material.

1 6. Separator according to one of the preceding claims, characterized in that the outer drum (1 1) consists of metal, in particular steel.

17. Separator according to one of the preceding claims, characterized in that the outer drum (1 1) has an outer drum base (13) and an outer drum upper part (14).

18. Separator according to one of the preceding claims, characterized in that the outer drum base (13) and the outer drum shell (14) are fixed by screw means to each other.

19. Separator according to one of the preceding claims, characterized in that the screw means

a. Bolt or

b. a lock ring or

c. a thread between the outer drum shell (14) and the outer drum base (13)

include.

20. Separator according to one of the preceding claims, characterized in that the inner drum (12) has an inner drum lower part (1 6) and an inner drum upper part (17).

21. Separator according to one of the preceding claims, characterized in that the inner drum base (1 6) and the inner drum upper part (17) are not connected to each other disassembled.

22. Separator according to one of the preceding claims, characterized in that the inner drum base (1 6) and the inner drum upper part (17) are materially connected to each other, in particular glued or welded.

23. Separator according to one of the preceding claims, characterized in that the inner drum base (1 6) and the inner drum upper part (17) are mechanically connected to each other. 24. Separator according to one of the preceding claims, characterized in that between the inner drum base (16) and the inner drum upper part (17) at least one seal, in particular a circumferential sealing ring (64) is arranged or formed. 25. Separator according to one of the preceding claims, characterized in that the outer drum shell (14) is designed in the manner of a ring and is designed to be open axially upwards, so that the inner drum shell protrudes axially out of it. 26. Separator according to one of the preceding claims, characterized in that one or both of the following parts are conically formed: the outer and the inner drum shell (14, 17) and the outer and the inner drum base (13, 16). 27. Separator according to one of the preceding claims, characterized in that the outer drum base (13) is doppelkonisch formed and an inner conical portion (13 a) and an outer conical portion (13 b) and that the inner drum base (1 6) has a corresponding doppelkonische shape having an inner conical portion (16a) and an outer conical portion (16b).

28. Separator according to one of the preceding claims, characterized in that the inner drum (12) and the outer drum (1 1) non-positively and / or positively non-rotatably connected to each other.

29. Separator according to one of the preceding claims, characterized in that the inner drum (12) and the outer drum (1 1) are rotatably connected by at least one or more corresponding positive locking means with each other.

30. Separator according to one of the preceding claims, characterized in that the inner drum (12) as a positive locking means at least one or more ribs (87) in one or more corresponding groove (s) (88) on the outer drum base (13) intervenes.

31. Separator according to one of the preceding claims, characterized in that the one or more ribs (87) on the inner conical portion (16a) of the inner drum base (16) is / are formed on the outer surface thereof and in that one or more Grooves (88) corresponding to the inner conical portion (13a) of the inner drum shell (13) is formed on the inner surface thereof / are.

32. Separator according to one of the preceding claims, characterized in that the outer drum (1 1) by a drive motor (8) is driven.

33. Separator according to one of the preceding claims, characterized in that the means for clarifying a plate package (25) from a stack of separating plates (26), which is preferably made of plastic or a plastic composite material.

34. Separator according to one of the preceding claims, characterized in that the outer drum upper part (14) extends into the conical portion of the inner drum upper part (17), such that the latter with a part of its conical portion protrudes from the outer drum top (14) vertically upwards.

35. Separator according to one of the preceding claims, characterized in that the outer drum base (13) with a drive spindle (7) is rotatably connected.

36. Separator according to one of the preceding claims, characterized in that a feed system and a drainage system of the drum are formed exclusively on the inner drum (12).

37. Separator according to one of the preceding claims, characterized in that no radially out of the inner drum (12) leading out into the surrounding space of the inner drum solid discharge openings are formed in the inner drum wall.

38. Separator according to one of the preceding claims, characterized in that the inlet system and the drainage system in sealed design on the inner drum (12) are formed.

39. Separator according to one of the preceding claims, characterized in that the inlet system and the drainage system have a cover ring body (37) which does not rotate with the drum during operation.

40. Separator according to one of the preceding claims, characterized in that the feed system has a feed pipe (23) that is designed as a rotating element with the drum (2).

41. Separator according to one of the preceding claims, characterized in that the inlet pipe (23) projects into the cover ring body (37).

42. Separator according to one of the preceding claims, characterized in that one or more further tubular elements protrude into the annular body (37), which rotate in operation with the drum (2).

43. Separator according to one of the preceding claims, characterized in that between the cover ring body (37) and rotating tubular elements or ends (23, 29, 45) of the drum one or more sealing arrangements (40, 41, 42) each having one or a plurality of sealing rings are arranged.

44. Separator according to one of the preceding claims, characterized in that at least one or more of the rotating in operation with the drum tube elements, in particular the inlet pipe (23), the drum in the cover ring (37) is guided axially displaceable / and that a device for releasably fixing the at least one tubular element in an axial position in the cover ring body (37) is provided.

45. Separator according to one of the preceding claims, characterized in that the means for releasably fixing the tubular element in an axial position in the cover ring body (37) realizes a releasable form and / or adhesion.

46. Separator according to one of the preceding claims, characterized in that the drum base is provided with a distributor extension (21), the distribution channels for passing the product to be processed from a feed pipe into the centrifugal space or the drum interior (15).

47. Separator according to one of the preceding claims, characterized in that all in operation coming into contact with product areas of the drum (2) made of plastic or a plastic composite material.

48. Separator according to one of the preceding claims, characterized in that the entire inner drum (12) is designed in addition to the inlet and outlet system as an exchangeable preassembled module made of plastic or a plastic composite material.

49. Separator according to one of the preceding claims, characterized in that the drum (2) is arranged in a housing (1).

50. Separator according to one of the preceding claims, characterized in that in the inner drum upper part (17) is integrated at least one flow channel for a heavy product phase.

51. Separator according to one of the preceding claims, characterized in that the drainage areas of the drainage system are designed as annular channels, which open axially into annular spaces of the cover ring body (37).

52. separator according to the preamble of claim 1 or according to any one of the preceding claims, characterized in that one or more reinforcing elements in particular for a pipe, a pipe piece o- a pipe extension made of plastic or plastic composite material is provided, wherein the or the reinforcing elements preferably as Sleeve (s) (76, 77, 78) is / are formed.

53. separator according to the preamble of claim 1 or any one of the preceding claims, characterized in that one or more reinforcing elements is provided within the inner drum / are, wherein the or the reinforcing elements are preferably made of metal.

54. Separator according to claim 53, characterized in that the sleeve consists of ceramic or metal.

55. Separator for the centrifugal separation of a flowable product into different phases or for the centrifugal clarification of a product, with at least the following features:

a. a rotatable drum (2) which delimits a centrifugal space (15) and has a means arranged in the drum (2) for clarifying a product to be processed in the centrifugal field,

b. the drum (12) being made of plastic or a plastic composite material,

c. wherein the feed system and the drainage system are formed on the drum (12),

d. the supply system and the drainage system comprising a cover ring body (37) made of plastic, which does not rotate with the drum during operation,

e. wherein the feed system comprises a feed pipe (23) formed as a drum rotating member (2) and projecting into the cover ring body (37) and one or more further pipe members projecting into the ring body (37) to rotate in operation with the drum (2), and

f. wherein at least one or more of the tube elements rotating during operation with the drum, in particular the inlet tube (23), of the drum in the cover ring body (37) is / are axially displaceably and that means for releasably fixing the less at least one pipe element is preferably provided in an axial position in the cover ring body (37).

56. Separator according to one of the preceding claims, characterized in that between the cover ring body (37) and rotating

Pipe elements or ends (23, 29, 45) of the drum one or more seal assemblies (40, 41, 42) are arranged, each with one or more sealing rings.

56. Separator according to one of the preceding claims, characterized in that the means for releasably fixing the tubular element in an axial position in the cover ring body (37) realizes a releasable form and / or adhesion. 57. Separator according to one of the preceding claims, characterized in that the drum base is provided with a distributor lug (21), the distribution channels for passing the product to be processed from a feed pipe into the drum interior (15). 58. Separator according to one of the preceding claims, characterized in that all in operation coming into contact with product areas of the drum (2) entirely or predominantly made of plastic or a plastic composite material.

59. separator according to one of the preceding claims, characterized in that the entire inner drum (12) is designed in addition to the inlet and outlet system as a removable preassembled module made of plastic or a plastic composite material.

60. Separator according to one of the preceding claims, characterized in that in the inner drum shell (17) at least one flow channel for a heavy product phase is integrated.

61. Separator according to one of the preceding claims, characterized in that the drainage areas of the drainage system are designed as annular channels, which open axially into annular spaces of the cover ring body (37).

62. Drum which can be used as an internal drum for a separator, in particular for a separator according to one of the preceding claims, characterized in that a means for clarification is arranged or formed in the internal drum (12) such that an inlet is provided on the internal drum. and drain system is formed and that the inner drum (12) in an outer drum (1 1) can be used.

63. Drum, in particular inner drum, according to claim 62, characterized in that the entire inner drum (12) is designed together with its inlet and outlet system as an exchangeable preassembled module.

64. Drum, in particular inner drum, according to claim 63, characterized in that the module consists entirely or at least predominantly of plastic or a plastic composite material.

65. Drum, in particular inner drum, according to one of the preceding claims 62 to 64, characterized in that the inner drum (12) one or more positive locking means which / is designed to cooperate with one or more corresponding positive locking means of the outer drum (1 1) / are to connect these rotatably.

66. Drum, in particular inner drum, according to one of the claims related to them 62 to 65, characterized in that it is designed as extending around a rotation axis circumferentially closed drum, which forms a self-supporting unit.

67. Drum, in particular inner drum, according to one of claims 62 to 66, characterized in that the means for clearing as a plate Package (25) in particular from a stack of separating plates (26) is formed, which is preferably made of plastic or a plastic composite material.

68. Drum, in particular inner drum, according to one of the preceding claims 62 to 67, characterized in that it comprises an inner drum base (1 6) and an inner drum upper part (17).

69. drum, in particular inner drum, according to one of the preceding claims 62 to 68, characterized in that one or both elements a) inner drum base (1 6) and b) inner drum shell (17) is conical / are.

70. Drum, in particular inner drum, according to one of the preceding claims 62 to 69, characterized in that the inner drum base (1 6) and the inner drum shell (17) are integrally connected inseparably, in particular glued or welded.

71. Drum, in particular inner drum, according to one of the preceding claims 62 to 70, characterized in that the inner drum base (1 6) and the inner drum upper part (17) are not materially mechanically connected in particular inseparable.

72. Drum, in particular inner drum, according to one of the preceding claims 62 to 71, characterized in that between the inner drum base (16) and the inner drum shell (17) at least one seal, in particular a circumferential sealing ring (64) is arranged or formed.

73. Drum, in particular inner drum, according to one of the preceding claims 62 to 72, characterized in that its inlet system and its drainage system has a cover ring body (37) which does not rotate with the drum during operation.

74. Drum, in particular inner drum, according to one of the preceding claims 62 to 73, characterized in that the feed system comprises a feed pipe (23) which is designed as a rotating element with the drum (2).

75. Drum, in particular inner drum, according to one of the preceding claims 62 to 74, characterized in that the inlet pipe (23) protrudes from below into the cover ring body (37).

76. Drum, in particular inner drum, according to one of the preceding claims 62 to 75, characterized in that one or more further tubular elements project from below into the annular body (37), which rotate in operation with the drum (2).

77. drum, in particular inner drum, according to one of the preceding claims 62 to 76, characterized in that between the Abdeckringkörper (37) and rotating tubular elements or ends (23, 29, 45) of the drum one or more sealing arrangements (40, 41 , 42) are each arranged with one or more sealing rings.

78. drum, in particular inner drum, according to one of the preceding claims 62 to 77, characterized in that one or more reinforcing elements is / are provided within the inner drum, wherein the or the reinforcing elements preferably as a sleeve (s) (23a, 76, 77, 78) is / are formed.

79. Drum, in particular inner drum, according to claim 78, characterized in that the sleeve (23a, 76, 77, 78) consists of ceramic or metal.

80. drum, in particular inner drum, according to claim 79, characterized in that the at least one sleeve (23a, 76, 77, 78) has a partial section, in particular forms an end of a pipe, pipe section or pipe socket.

81. Drum, in particular inner drum, according to claim 80, characterized in that the at least one sleeve 23a, 76, 77, 78) forms an outer jacket of a pipe, pipe piece or pipe socket.

82. Drum, in particular inner drum, according to one of claims 62 to 80, characterized in that the inner drum (12) has a positive locking means at least one or more ribs (87).

83. Drum, in particular inner drum, according to one of the preceding claims 62 to 82, characterized in that the inner drum base (1 6) has a biconical shape with an inner conical portion (1 6a) and an outer conical portion (1 6b).

84. Drum, in particular inner drum, according to one of the preceding claims 62 to 83, characterized in that the one or more rib (s) (87) on the inner conical portion (16a) of the inner drum lower part (1 6) is / are formed.

85. Use of an all or predominantly made of plastic inner drum (12) according to one of claims 62 to 84 of a separator with metallic outer drum as a disposable drum for single processing, in particular concentration, a product batch.

86. A method for processing, in particular concentration, of a product with a separator according to any one of the preceding claims.