DE102022123250A1 - Separator rotor for a centrifugal separator - Google Patents

Abstract

The invention relates to a separator rotor (10) for a centrifugal separator (100), having a rotor shaft (12), one or more separating elements (16, 16`), which are arranged axially displaceably on the rotor shaft (12), and a biasing spring (20). for biasing the one or more separating elements (16, 16 ') and a support body (22), which supports the biasing spring (20) on one side and is arranged axially displaceably on the rotor shaft (12), the support body (22) being in one Uninstalled state of the separator rotor (10) is in a balancing position in which the biasing spring (20) presses the support body (22) against an axial stop (26).

Description

The invention relates to a separator rotor for a centrifugal separator, with a rotor shaft, one or more separating elements which are arranged axially displaceably on the rotor shaft, a biasing spring for biasing the one or more separating elements and a support body which supports the biasing spring on one side and is axially displaceable the rotor shaft is arranged, the support body being in an uninstalled state of the separator rotor in a balancing position in which the biasing spring presses the support body against an axial stop.

The invention further relates to a centrifugal separator with a separator rotor having a rotor shaft and a bearing for the rotor shaft of the separator rotor.

In addition, the invention relates to a method for producing a centrifugal separator with a balanced separator rotor.

In a large number of applications for centrifugal separators, due to temperature developments within the separator and different thermal expansion coefficients of the materials used, an axial compensation of the system is required, which is usually implemented by a floating bearing. In known centrifugal separators, the floating bearing has previously been arranged in the area of the electric drive.

A rotor for such a centrifugal separator is, for example, from the publication EP 3 374 085 B1 known.

Since the thermal load on the drive is increased by the waste heat from the floating bearing, the floating bearing should be arranged as far away from the drive as possible. Furthermore, the integration of the floating bearing into the drive is structurally complex and electrically disadvantageous.

Furthermore, the separator rotor should be balanced before installation, even without a magnet for the electric drive. During the balancing process, the components of the separator rotor must be fixed on the rotor shaft, so that, for example, separator elements of the separator rotor must be fixed on the rotor shaft during the balancing process. On the other hand, the adhesion between the biasing spring of the separator rotor and the floating bearings of the separator rotor in the operating state of the centrifugal separator must not be hindered by the fixation of the separator elements required for the balancing process.

The object on which the invention is based is therefore to reduce the thermal load on the drive of a centrifugal separator due to the waste heat emanating from the bearing of the rotor shaft. Furthermore, the balancing process on the separator rotor of the centrifugal separator should be simplified.

The object is achieved by a separator rotor of the type mentioned at the outset, wherein a bearing for the rotor shaft can be pushed onto the rotor shaft of the separator rotor according to the invention from the side of the support body facing away from the biasing spring in such a way that the support body is pushed axially through the bearing in the direction of one or more Separating elements and/or can be moved into an operating position against the biasing spring.

The one or more separating elements are prestressed and secured by the preload spring and the support body supporting the preload spring, so that the balancing process of the support body can take place directly after the support body has been installed. The biasing spring is arranged between the one or more separating elements and the support body.

The bearing can be pushed onto the rotor shaft from the side of the support body facing away from the biasing spring in such a way that contact of the support body with the axial stop is eliminated in the operating position of the support body. Because the contact of the support body with the axial stop is eliminated when the bearing is pushed on, the pushed-on bearing is preloaded by the preload spring. The pushed-on bearing is preferably a floating bearing, with a fixed bearing for the rotor shaft of the separating rotor preferably being located on the side of the separating elements facing away from the floating bearing. In the operating position of the support body, the fixed bearing is preferably also preloaded.

The biasing spring is preferably a compression spring. The biasing spring can be designed as a coil spring. The biasing spring can also be a conical spring with a diameter that changes in the axial direction. Alternatively, the biasing spring can also be a wave spring.

To axially secure the one or more separating elements, the biasing spring applies a compressive force to the one or more separating elements. The separating elements can be separating plates. The separator rotor can include a plate package with several stacked separator plates. The rotor shaft can be made of stainless steel, for example. The separating elements and/or an axial guide which the separating elements are pushed on can be sprayed onto the rotor shaft. The axial guide is preferably sprayed onto the rotor shaft and the separating elements are pushed onto the sprayed axial guide.

For the purposes of the invention, the uninstalled state is to be understood as meaning the state of the separator rotor before it is inserted into a separator housing of the centrifugal separator.

The separator rotor according to the invention is advantageously further developed in that the biasing spring is designed to be moved from a balancing state to an operating state by pushing the bearing onto the rotor shaft when the support body is moved from the balancing position to the operating position. In the operating state, the preload spring is more compressed than in the balancing state. The compressive force emanating from the preload spring is greater in the operating state than in the balancing state. The distance between the support body and the one or more separating elements is smaller in the operating position of the support body than in the balancing position of the support body. The distance between the support body and the one or more separating elements is smaller in the operating state of the biasing spring than in the balancing state of the biasing spring.

In a preferred embodiment of the separator rotor according to the invention, the rotor shaft has a bearing receiving section on the side of the support body facing away from the biasing spring, in which the bearing can be positioned in the operating position by being pushed onto the rotor shaft to move the support body. The bearing receiving section of the rotor shaft has an axial length which corresponds at least to the axial width of the bearing. Preferably, the rotor shaft has an end shaft section on the side of the support body facing away from the preload spring, the axial length of which corresponds to at least twice the axial width of the bearing, so that after the bearing has been pushed on, the rotor shaft still has a usable shaft end on the side of the bearing applied to the support body having.

In a further preferred embodiment of the separator rotor according to the invention, the support body is positively secured against loss by the axial stop. The axial stop therefore prevents the support body from accidentally detaching from the rotor shaft. The axial stop thus limits the axial movement of the support body in one direction. The axial stop is preferably formed by at least one stop surface on the rotor shaft, against which a stop surface on the support body is pressed when the separator rotor is not installed. In a balancing position of the support body, the stop surface on the support body side comes into contact with the stop surface on the rotor shaft side and prevents further axial movement of the support body in this axial direction. Alternatively, the support body can also be non-captively secured or captively secured, for example via a clamping body, such as a releasable set screw.

A separator rotor according to the invention is also preferred, in which the support body rotates around the rotor shaft and/or has an annular shape. The support body is preferably designed as a preload sleeve. The support body is preferably a one-piece body. The support body can be a plastic body or a metal body.

In another preferred embodiment of the separator rotor according to the invention, the support body has a spring contact surface which is in contact with the biasing spring, wherein the spring contact surface is preferably carried by a collar of the support body or is arranged in a spring receiving groove of the support body. The collar or the spring receiving groove are preferably designed to be circumferential. The collar or the spring receiving groove ensure a secure fit or a secure stop of the preload spring and prevent unintentional jamming or tilting of the preload spring.

The separator rotor according to the invention is further advantageously developed in that the support body is resiliently spread onto the rotor shaft. The support body is preferably pushed onto the rotor shaft and designed to be elastically deformable in such a way that the support body is elastically deformed when pushed onto the rotor shaft and deforms back when it reaches a support body seat. By deforming the support body in the support body seat, the support body is secured in a form-fitting manner against loss.

In a particularly preferred embodiment of the separator rotor according to the invention, the support body and the rotor shaft are connected to one another via a clip connection or a snap connection. The rotor shaft can, for example, have a groove into which one or more engagement bodies, for example clips or hooks, of the support body engage. Alternatively, a separate securing member, which is pushed onto the rotor shaft, can engage in the groove. The securing member then provides the axial stop against which the support body is inserted the balancing position is pressed by the preload spring. The securing member can be, for example, a retaining ring or snap ring. The groove of the rotor shaft can, for example, be designed to be circumferential. The axial extent of the groove can, with a suitable design of the clips or hooks and the groove or with a suitable design of the securing member and the groove, define the axial play of the support body. The support body can have one or two guide sections spaced apart from one another in the axial direction, which are designed to guide the support body on the rotor shaft during an axial movement of the support body. A first guide section of the support body slides along a section of the rotor shaft which lies on a first side of the groove. A second guide section of the support body slides along a section of the rotor shaft which lies on a second side of the groove.

The object on which the invention is based is further achieved by a centrifugal separator of the type mentioned at the outset, the separator rotor of the centrifugal separator according to the invention being designed according to one of the embodiments described above. The bearing of the centrifugal separator according to the invention is pushed onto the rotor shaft from the side of the support body facing away from the biasing spring in such a way that contact of the support body with the axial stop is eliminated.

With regard to the advantages and modifications of the centrifugal separator according to the invention, reference is first made to the advantages and modifications of the separator rotor according to the invention. The centrifugal separator can be a plate separator, for example. In this case, the separator rotor has several separating elements designed as separator plates, which are stacked to form a plate pack or stack of plates.

In a preferred embodiment, the centrifugal separator according to the invention is further developed by a rotor drive for rotationally driving the rotor shaft of the separator rotor, the bearing being a floating bearing arranged outside the rotor drive. Because the floating bearing of the bearing is arranged outside the rotor drive, the operating temperature of the floating bearing is significantly reduced. This leads to a significant extension of the service life of the floating bearing and the grease service life. Due to the reduction in the operating temperature of the floating bearing, higher speeds are also possible. The centrifugal separator can also be operated at higher ambient temperatures.

A larger floating bearing can be installed because the space is no longer limited by the drive, which means greater flexibility in bearing selection. The rotor drive and the separator rotor are decoupled from each other, so that the costs for the rotor drive are significantly reduced. The centrifugal separator becomes more robust and durable.

The floating bearing can be, for example, a rolling bearing. The drive can be an electric drive, in particular an electric motor.

On the side of the separator elements facing away from the floating bearing there is preferably a fixed bearing for the rotor shaft of the separator rotor. In the operating position of the support body, due to the lifted axial stop, both the floating bearing and the fixed bearing are preferably preloaded by the biasing spring.

In a further preferred embodiment of the centrifugal separator according to the invention, the bearing is arranged between the rotor drive and the support body. Preferably, the bearing has a bearing inner ring, with an inside lateral surface of the bearing inner ring being in contact with the rotor shaft. The bearing inner ring can be in direct contact with the support body. Alternatively, one or more, in particular axially displaceable, intermediate members can be arranged between the bearing inner ring and the support body.

Furthermore, a centrifugal separator according to the invention with a separator housing is preferred, with a bearing outer ring of the bearing being supported by an intermediate cover of the separator housing. Because the bearing outer ring is supported by the intermediate cover of the separator housing, the bearing can be pushed onto the rotor shaft of the separator rotor by placing the intermediate cover. This considerably simplifies the assembly of the centrifugal separator.

The object on which the invention is based is further achieved by a method of the type mentioned at the outset, wherein within the scope of the method according to the invention an unbalanced separator rotor with one or more separator elements and a support body is provided, the support body supporting a biasing spring of the separator rotor on one side and being axially displaceable on the Rotor shaft is arranged. As part of the process, the separator rotor is balanced and the balanced separator rotor is inserted into a separator housing of the centrifugal separator.

Because the separator rotor is inserted into the separator housing of the centrifuge can be balanced using a lab separator, both the balancing process and the final assembly are considerably simplified. This ultimately leads to significantly reduced manufacturing costs for the centrifugal separator.

In a preferred embodiment of the method according to the invention, the support body is in a balancing position during the balancing of the separator rotor, in which the biasing spring presses the support body against an axial stop. Alternatively or additionally, after, during or before inserting the balanced separator rotor into the separator housing, a bearing for the rotor shaft is pushed onto the rotor shaft from the side of the support body applied to the biasing spring in such a way that the support body passes through the bearing axially in the direction of one or more Separation elements and/or are moved into an operating position against the biasing spring. Preferably, the balanced separator rotor is first inserted into the separator housing, in particular pressed in, and then a cover or intermediate cover including a bearing is placed on it. When the cover or intermediate cover supporting the bearing is put on, the support body is moved by the bearing from the balancing position to the operating position. When the support body is moved into the operating position, the biasing spring is brought into an operating state by compression. Pushing the bearing onto the rotor shaft increases the pressure force emanating from the preload spring. Furthermore, the distance between the support body and the one or more separating elements is reduced by moving the support body into the operating position, which causes the compression of the biasing spring. Preferably, the compression of the preload spring leads to no or only an insignificant change in the unbalance on the separator rotor. In order to avoid or minimize a change in the unbalance during compression, it is advantageous to choose a degressive preload spring or a comparatively small preload length.

Furthermore, a method according to the invention is preferred, in which a cover or intermediate cover of the separator housing is placed on a housing base body of the separator housing. The cover or intermediate cover preferably carries the bearing for the rotor shaft of the separator rotor and the bearing is pushed onto the rotor shaft by placing the cover or intermediate cover on the housing base body. The bearing is preferably carried by the cover or intermediate cover, so that the bearing is pushed on by placing the cover or intermediate cover.

In a particularly preferred embodiment of the method according to the invention, the separator rotor is designed according to one of the embodiments described above. Alternatively or additionally, the centrifugal separator is designed according to one of the embodiments described above. With regard to the advantages and modifications of the method according to the invention, reference is therefore made to the advantages and modifications of the separator rotor according to the invention and the centrifugal separator according to the invention.

• 1 einen erfindungsgemäßen Zentrifugalabscheider in einer Schnittdarstellung, wobei sich der Abstützkörper des Abscheiderotors in der Betriebsposition befindet;
• 2 den Abscheiderotor des in der 1 abgebildeten Zentrifugalabscheiders ohne Lagerung und Abscheidergehäuse in einer Schnittdarstellung, wobei sich der Abstützkörper des Abscheiderotors weiterhin in der Betriebsposition befindet;
• 3 eine Detaildarstellung der Verbindung zwischen Rotorwelle und Abstützkörper des in der 2 abgebildeten Abscheiderotors, wobei sich der Abstützkörper des Abscheiderotors weiterhin in der Betriebsposition befindet;
• 4 den in der 2 abgebildeten Abscheiderotor in einer Schnittdarstellung, wobei sich der Abstützkörper des Abscheiderotors in der Wuchtposition befindet;
• 5 eine Detaildarstellung der Verbindung zwischen Rotorwelle und Abstützkörper des in der 4 abgebildeten Abscheiderotors, wobei sich der Abstützkörper des Abscheiderotors weiterhin in der Wuchtposition befindet;
• 6 einen erfindungsgemäßen Abscheiderotor in einer Seitenansicht;
• 7 den in der 6 abgebildeten Abscheiderotor in einer Draufsicht; und
• 8 den in der 6 abgebildeten Abscheiderotor in einer Explosionsdarstellung.

Preferred embodiments of the invention are explained and described in more detail below with reference to the accompanying drawings. Show:

• 1 a centrifugal separator according to the invention in a sectional view, the support body of the separator rotor being in the operating position;
• 2 the separator rotor in the 1 The centrifugal separator shown without bearings and separator housing in a sectional view, with the support body of the separator rotor still in the operating position;
• 3 a detailed representation of the connection between the rotor shaft and the support body in the 2 separator rotor shown, with the support body of the separator rotor still in the operating position;
• 4 the one in the 2 The separator rotor shown in a sectional view, the support body of the separator rotor being in the balancing position;
• 5 a detailed representation of the connection between the rotor shaft and the support body in the 4 separator rotor shown, with the support body of the separator rotor still in the balancing position;
• 6 a separator rotor according to the invention in a side view;
• 7 the one in the 6 Separator rotor shown in a top view; and
• 8th the one in the 6 Separator rotor shown in an exploded view.

The 1 shows a centrifugal separator 100 designed as a plate separator. The centrifugal separator 100 comprises a separator housing 102. The separator housing 102 consists of a housing base body 104, an intermediate cover 106 and a cover 116. Inside the housing base body 104 there is a separation chamber 108, in which a separator rotor 10 is arranged. By means of the separator rotor 10, particle separation is implemented within the separation chamber 108. For example, the centrifugal separator 100 can be used in a crankcase ventilation system for oil mist separation.

The separator rotor 10 arranged in the separation chamber 108 has a rotor shaft 12. The rotor shaft 12 is mounted via the bearings 110, 112. The bearing 110 is designed as a floating bearing. The bearing 112 is designed as a fixed bearing.

A rotor drive 114 designed as an electric motor is integrated in the cover 116. By means of the rotor drive 114, the separator rotor 10 can be driven in rotation.

The bearing outer ring of the bearing 110 is carried by the intermediate cover 106 of the separator housing 102. The bearing 110 is therefore arranged outside or at a distance from the rotor drive 114 of the centrifugal separator 100.

The rotor shaft 12 of the separator rotor 10 is made of stainless steel. An axial guide 14 is sprayed onto the rotor shaft 12, the axial guide 14 serving to guide and accommodate separating elements 16, 16 '. The separating elements 16, 16' are separating plates which are stacked one on top of the other, so that a stack of plates 18 results. The separating elements 16, 16 'are arranged on the rotor shaft 12 in an axially displaceable manner.

The separator rotor 10 further comprises a biasing spring 20 for biasing the separating elements 16, 16`. The separator rotor also includes a support body 22, which supports the biasing spring 20 on one side. The support body 22 is also arranged on the rotor shaft 12 in an axially displaceable manner. The biasing spring 20 is located between the uppermost separating element 16 'of the stack 18 and the support body 22. The support body 22 is designed as a biasing sleeve and has an annular shape surrounding the rotor shaft 12. The support body 22 is designed as a one-piece plastic body.

Due to the axial play of the support body 22, it can be brought into an operating position and into a balancing position by an axial movement. In the 1 the support body 22 is in the operating position in which the spring force of the preload spring 20 is supported on the inner ring of the bearing 110 via the support body 22. In the operating position of the support body, the floating bearing 110 and the fixed bearing 112 are preloaded via the biasing spring 20. The rotor shaft 12 has a bearing receiving section 24 on the side of the support body 22 facing away from the biasing spring 20, in which the bearing 110 can be positioned by being pushed onto the rotor shaft 12.

Since the bearing 110 is carried by the intermediate cover 106, the bearing 110 can be pushed onto the rotor shaft 12 by placing the intermediate cover 106 on the housing base body 104. By pushing the bearing 110 onto the rotor shaft 12, the inner ring of the bearing 110 can be brought into contact with a bearing contact surface of the support body 22. The contact between the bearing 110 and the support body 22 occurs before the bearing 110 has reached the bearing seat in the bearing receiving section 24. For the final positioning of the bearing 110 in the bearing receiving section 24, the intermediate cover 106 must be pressed against the spring force of the preload spring, so that the preload spring 20 is compressed.

The 2 and 3 show the support body 22 in the operating position and thus relate to the installed state of the separator rotor 10.

The rotor shaft 12 has an axial stop 26, which is formed by a stop surface 28. When the bearing 110 is pushed onto the rotor shaft 12, contact between the support body 22 and the axial stop 26 is eliminated. The support body 22 and the rotor shaft 12 can be connected to one another via a snap connection 38. In the illustrated operating position of the support body 22, the stop state is canceled because the stop surface 44 of the engagement body 42 designed as a snap hook is lifted from the stop surface 28 of the axial stop 26 due to the pushed-on bearing 110.

The separating element 16', which is in contact with the biasing spring 20, comprises a spring contact surface 30 in which the biasing spring 20 touches the separating element 16'. The separating element 16' further comprises a circumferential axial collar 32, which simplifies the assembly of the biasing spring 20 and improves the fit of the biasing spring 20. The biasing spring 20 lies against the spring contact surface 34 on the support body 22. The spring contact surface 34 is carried by a radial collar 35 of the support body 22. The support body 22 further comprises a plurality of pin-shaped guide members 36, which simplify the assembly of the support body 22 and ensure guidance of the biasing spring 20 during operation.

The rotor shaft 12 has a groove 40 which is designed to be circumferential. Several engagement bodies 42 of the support body 22 designed as snap hooks can engage in the groove 40. The intervention is canceled in the operating position shown. The axial extent of the groove 40 and the Design of the engagement bodies 42 define the axial play of the support body 22.

The support body 22 is resiliently spread onto the rotor shaft 12. The engagement bodies 42 designed as snap hooks are elastically deformed when the support body 22 is pushed onto the rotor shaft. When the groove 40 is reached, the engagement body 42 deforms again, so that the support body 22 is secured against loss in a form-fitting manner on the rotor shaft 12 via a snap connection 38.

The 4 and 5 show the support body 22 in the balancing position. The separator rotor 10 is therefore in an uninstalled state. In the state shown, the separator rotor 10 can be balanced before inserting it into the separator housing 102 and before installing the rotor drive 114. In the balancing position, the stop surfaces 44 of the engagement bodies 42 designed as snap hooks are pressed by the biasing spring 20 against the stop surface 28 on the rotor shaft 12. In the balancing position of the support body 22, the support body-side stop surfaces 44 are in contact with the rotor shaft-side stop surface 28 and prevent further axial movement of the support body 22 in the axial direction away from the separating elements 16, 16 '. The stack 18 is therefore prestressed so that the balancing process on the separator rotor 10 can take place with the separator elements 16, 16 'fixed.

The 6 to 8 show a separator rotor 10 with a rotor shaft 12 and an axial guide 14 sprayed onto the rotor shaft 12 for the separator elements 16, 16' of the stack 18. The separator elements 16 have spacer webs 46, so that there are flow areas through which flow can flow in the radial direction between the separator elements 16, 16' stacked on top of each other result. When assembling the separator rotor 10, after placing the separating elements 16, 16' on the axial guide 14, the biasing spring 20 is first pushed onto the rotor shaft 12. Subsequently, the support body 22 designed as a preload sleeve is pushed onto the rotor shaft 12 and thus pressed against the spring force of the preload spring 20 in the direction of the separating elements 16, 16 'until the engagement bodies 42 designed as snap hooks hook into a circumferential groove 40 of the rotor shaft 12.

After the engagement body 42 has been hooked into the groove 40, the support body 22 is secured against loss in a form-fitting manner on the rotor shaft 12 and is able to absorb the spring forces of the biasing spring 20. The separator elements 16, 16' are therefore fixed on the rotor shaft 12, so that the separator rotor can be balanced in this state.

After balancing the separator rotor 10, the balanced separator rotor 10 can then be inserted into a separator housing 102 of a centrifugal separator 10. A bearing 110 for the rotor shaft 12 is pushed onto the rotor shaft 12 after, during or before the balanced separator rotor 10 is inserted into the separator housing 102 from the side of the support body 22 facing away from the biasing spring 20 in such a way that the support body 22 is axially inserted through the bearing 110 Direction of the separating elements 16, 16 'and against the biasing spring 20 is moved into an operating position. The bearing 110 can be carried by a cover 116 or an intermediate cover 106 of the separator housing 102, with the bearing 110 being pushed onto the rotor shaft 12 by placing the cover 116 or the intermediate cover 106 on a housing base body 104 of the separator housing 102.

Reference symbols

10

separator rotor

12

Rotor shaft

14

Axial guidance

16, 16`

Separation elements

18

stack

20

Preload spring

22

Support body

24

Bearing receiving section

26

Axial stop

28

stop surface

30

Spring contact surface

32

Axial collar

34

Spring contact surface

35

Radial collar

36

leadership members

38

Snap connection

40

Nut

42

engagement body

44

stop surface

46

Spacer bars

100

Centrifugal separator

102

Separator housing

104

Housing base body

106

Intermediate cover

108

separation chamber

110

camp

112

camp

114

Rotor drive

116

Lid

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was 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

• EP 3374085 B1 [0005]

Claims (15)

Separation rotor (10) for a centrifugal separator (100), with - a rotor shaft (12), - one or more separation elements (16, 16`), which are arranged axially displaceable on the rotor shaft (12); - a biasing spring (20) for biasing the one or more separating elements (16, 16`); and - a support body (22), which supports the biasing spring (20) on one side and is arranged axially displaceably on the rotor shaft (12), the support body (22) being in a balancing position when the separator rotor (10) is not installed, in which the biasing spring (20) presses the support body (22) against an axial stop (26); characterized in that a bearing (110) for the rotor shaft (12) can be pushed onto the rotor shaft (12) from the side of the support body (22) facing away from the biasing spring (20) in such a way that the support body (22) is pushed through the bearing (110 ) can be moved axially in the direction of the one or more separating elements (16, 16`) and/or against the biasing spring (20) into an operating position. Separator rotor (10). Claim 1 , characterized in that the biasing spring (20) is designed to be moved from a balancing state to an operating state by pushing the bearing (110) onto the rotor shaft (12) when the support body (22) is moved from the balancing position to the operating position. Separator rotor (10) after Claim 1 or 2 , characterized in that the rotor shaft (12) has a bearing receiving section (24) on the side of the support body (22) facing away from the biasing spring (20), in which the bearing (110) can be pushed onto the rotor shaft (12) to move the support body (22) can be positioned in the operating position. Separator rotor (10) according to one of the preceding claims, characterized in that the support body (22) is positively secured against loss by the axial stop (26). Separator rotor (10) according to one of the preceding claims, characterized in that the support body (22) has a spring contact surface (34) which is in contact with the biasing spring (20), the spring contact surface (34) preferably being formed by a collar (35). of the support body (22) is carried or is arranged in a spring receiving groove of the support body (22). Separator rotor (10) according to one of the preceding claims, characterized in that the support body (22) is resiliently spread onto the rotor shaft (12). Separator rotor (10) according to one of the preceding claims, characterized in that the support body (22) and the rotor shaft (12) are connected to one another via a clip connection or a snap connection (38). Centrifugal separator (100), with - a separator rotor (10) having a rotor shaft (12), and - a bearing (110) for the rotor shaft (12) of the separator rotor (10); characterized in that the separator rotor (10) is designed according to one of the preceding claims and the bearing (110) is pushed onto the rotor shaft (12) from the side of the support body (22) facing away from the biasing spring (20) in such a way that contact of the Support body (22) is lifted with the axial stop (26). Centrifugal separator (100). Claim 8 , characterized by a rotor drive (114) for rotationally driving the rotor shaft (12) of the separator rotor (10), the bearing (110) being a floating bearing arranged outside the rotor drive (114). Centrifugal separator (100). Claim 8 or 9 , characterized in that the bearing (110) is arranged between the rotor drive (114) and the support body (22). Centrifugal separator (100) according to one of the Claims 8 until 10 , characterized by a separator housing (102), wherein a bearing outer ring of the bearing (110) is supported by an intermediate cover (106) of the separator housing (102). Method for producing a centrifugal separator (100) with a balanced separator rotor (10), characterized by the steps: - Providing an unbalanced separator rotor (10) with one or more separator elements (16, 16`) and a support body, the support body (22) being a Biasing spring (20) of the separator rotor (10) is supported on one side and is arranged axially displaceably on the rotor shaft (12); - Balancing the separator rotor (10); and - inserting the balanced separator rotor (10) into a separator housing (102) of the centrifugal separator (100). Procedure according to Claim 12 , characterized in that - the support body (22) moves during growth at least the separator rotor (10) is in a balancing position in which the biasing spring (20) presses the support body (22) against an axial stop (26); and/or - a bearing (110) for the rotor shaft (12) after, during or before inserting the balanced separator rotor (10) into the separator housing (102) from the side of the support body (22) facing away from the biasing spring (20). the rotor shaft (12) is pushed on so that the support body (22) is moved axially by the bearing (110) in the direction of the one or more separating elements (16, 16`) and/or against the biasing spring (20) into an operating position. Procedure according to Claim 12 or 13 , characterized by the step: - placing a cover (116) or intermediate cover (106) of the separator housing (102) on a housing base body (104) of the separator housing (102), the cover (116) or intermediate cover (106) preferably the bearing ( 110) for the rotor shaft (12) of the separator rotor (10) and the bearing (110) is pushed onto the rotor shaft (12) by placing the cover (116) or intermediate cover (106) on the housing base body (104). Procedure according to one of the Claims 12 until 14 , characterized in that the separator rotor (10) according to one of the Claims 1 until 7 and/or the centrifugal separator (100) according to one of the Claims 8 until 11 is trained.

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