EP3132854B1 - Rotor d'une centrifugeuse - Google Patents

Rotor d'une centrifugeuse Download PDF

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Publication number
EP3132854B1
EP3132854B1 EP16182944.5A EP16182944A EP3132854B1 EP 3132854 B1 EP3132854 B1 EP 3132854B1 EP 16182944 A EP16182944 A EP 16182944A EP 3132854 B1 EP3132854 B1 EP 3132854B1
Authority
EP
European Patent Office
Prior art keywords
rotor
lid
locking
handle
pin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16182944.5A
Other languages
German (de)
English (en)
Other versions
EP3132854A1 (fr
Inventor
Matthias Hornek
Rainer Prilla
Andreas HÖLDERLE
Klaus-Günter Eberle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Andreas Hettich GmbH and Co KG
Original Assignee
Andreas Hettich GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Andreas Hettich GmbH and Co KG filed Critical Andreas Hettich GmbH and Co KG
Publication of EP3132854A1 publication Critical patent/EP3132854A1/fr
Application granted granted Critical
Publication of EP3132854B1 publication Critical patent/EP3132854B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/02—Casings; Lids
    • B04B7/06—Safety devices ; Regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B5/00—Other centrifuges
    • B04B5/12—Centrifuges in which rotors other than bowls generate centrifugal effects in stationary containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B5/00—Other centrifuges
    • B04B5/04—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers
    • B04B5/0407—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles
    • B04B5/0414—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles comprising test tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/02—Casings; Lids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/08—Rotary bowls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/02—Casings; Lids
    • B04B2007/025—Lids for laboratory centrifuge rotors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
    • B04B9/08—Arrangement or disposition of transmission gearing ; Couplings; Brakes
    • B04B2009/085—Locking means between drive shaft and rotor

Definitions

  • the invention relates to a rotor according to the specified in the preamble of claim 1. Art.
  • the fastening device comprises a latching element, which cooperates with a rotor pin and is provided in a handle for the cover, wherein the latching element partially protrudes from the handle and is mounted so that the latching element is urged by the centrifugal force into a locking position.
  • the aforementioned fastening device it is possible to securely lock the rotor with the lid and to leave the lid in the locked state in the event of uncontrolled leakage of sample material during operation.
  • the handle attached to the lid the rotor can be removed for cleaning and, if necessary, for decontamination.
  • the locking mechanism requires a lot of space, since the actual locking takes place by engagement of the locking element in a latching position in cooperation with the rotor pin in the handle of the lid, ie above the lid.
  • a sufficiently sized rotor pin must engage through the plane of the lid into the handle. If the axial extent of the rotor pin is too short, locking is not possible. Too little radial expansion of the rotor pin the required stability is not guaranteed. Consequently, this locking mechanism, for example, for fixed-angle rotors, in which larger sample vessels are used, poorly suited because the rotor pin much space in the Recording space occupied and thereby the insertion and removal of sample containers is difficult.
  • a generic centrifuge in which the rotor is bolted to the drive shaft for axial fixation firmly on the drive shaft.
  • a tool must pass through the lid and an actuating element in order to actuate a screw which releases the rotor from the drive shaft or fixes the rotor on the drive shaft.
  • the rotor can also be connected to a lid via a quick release. By activating the actuator mounted in the cover in the form of a push button, the lid can be released from the rotor by an axially offset locking element is moved from a locking position. By placing the lid on the rotor of the quick release is activated, in which the locking element is moved from the unlocked position into a locking position and thereby cover and rotor are firmly connected to each other.
  • the object of the invention is to provide, while avoiding the disadvantages mentioned, a rotor according to the type specified in the preamble of claim 1, whose locking mechanism occupies little space in the receiving space of the rotor and reduces the risk of occurrence of imbalances.
  • the invention is based on the finding that an axial design and arrangement of the locking element in the cover leads to space savings in the receiving space of the rotor, since measures in the rotor are unnecessary to bridge the axial offset of centric fixation and cover.
  • the occurrence of imbalances can be counteracted more easily by the axial design and arrangement. This can be easily achieved by means of a rocker arm.
  • the rotor of a centrifuge has a rotor axis, a receiving space for samples to be centrifuged and a lid.
  • the lid limits the receiving space upwards and is arranged concentrically to the rotor.
  • a handle for supporting the rotor and lid is provided on the side of the lid remote from the receiving space.
  • a locking mechanism of the lid and rotor is provided, which is mounted in a bearing in the lid.
  • the locking mechanism comprises a movable between a locking position and an unlocking locking element and is designed as a quick release. The quick release does not require any additional tools.
  • the locking element in this case has an actuating element and a latching element, which are arranged axially spaced from each other with respect to the rotor axis.
  • the position of the actuating element can be selected independently of the arrangement and design of the rotor lid.
  • the actuating element can be arranged at a location easily accessible to the operator over the rotor lid. This simplifies the operation of the locking mechanism. At the same time a more flexible design of the lid is possible, whereby more space for the receiving space can be provided.
  • the locking element is formed by a rocker arm, at the upper end of the actuating element is arranged and at the lower end of the locking element.
  • the pivot axis is aligned perpendicular to the rotor axis.
  • the locking element engages in the locking position in a recess of the rotor.
  • the position of the recess can be well adapted to the structural conditions of the rotor and choose so that a sufficiently stable locking is ensured for the transport of the rotor with the lid. This leads to a more efficient use of the rotor and improves safety.
  • the locking mechanism has a plurality of locking elements, in particular also a plurality of actuating elements, which are of the same design and for Rotor axis are arranged at a height and symmetrical to each other.
  • the lock is thus more stable, which has positive effects on the safety when using the rotor.
  • the pivot axis divides the locking element into the actuating element and the latching element.
  • the locking elements are easy to manufacture and install. The costs for the rotor are thereby reduced.
  • the latching element and the actuating element have the same length.
  • the rocker pivots on both sides of the pivot axis by the same way on or off. As a result, a compact design of the locking mechanism is possible.
  • a pin is arranged coaxially to the rotor axis in the receiving space of the rotor, in which at least one recess for the engagement of the locking elements or is provided. Due to the introduction of the recess in the pin, the distance between the recess and the actuating element is smaller, and the rocker arms can be made shorter. As a result, the stability of the lock is significantly improved and simplifies operation.
  • the recess provided on the pin can be formed by an annular groove.
  • a locking element in the plane in which the locking takes place engage at each point in the recess. It thus eliminates the need to align the locking device or the cover when placed on the rotor horizontally at a certain angle in which the locking element can engage in the associated recess. This makes locking faster and more intuitive.
  • the pin engages through a recess in the cover at least partially into the handle.
  • the distance between the annular groove and the actuator further shortened and the lock can be made even more stable.
  • the pin is conical and tapers towards its free end.
  • the conical free end also serves the easier centering of the lid when placed on the rotor. The operation of the rotor is thereby significantly improved.
  • the pin is arranged on a coaxial shoulder, on which a seal surrounding the pin is mounted.
  • the lid rests on the seal, and the seal seals the receiving space of the rotor against the pin and the recess in the lid.
  • the receiving space - provided a seal between the lid and rotor head in the associated support area - well sealable, especially aerosol.
  • the rotor can thus also be used for centrifuging samples which are potentially harmful to the operator or the environment, since even in the case of a vessel rupture, no substances can escape from the receiving space and the rotor together with the locked lid can be removed from the centrifuge. This considerably extends the field of application of the rotor.
  • rocker arm is spring-loaded in the direction of the locking position. This ensures a secure automatic locking of the lid when placed on the rotor and thus facilitates the operation of the rotor.
  • the handle is in operative connection with an activatable blocking element, which defines the locking element of the cover and rotor in the locked position in the activated state.
  • the bearing of the locking mechanism is arranged in a bearing body which is arranged concentrically with the lid and fixedly connected to the lid, in particular in the form of a cylinder.
  • the locking mechanism thereby gains further stability.
  • the handle is arranged concentrically to the bearing body and is mounted movable relative to the bearing body.
  • the handle can be assigned an additional function, which it fulfills when it is moved relative to the bearing body.
  • the handle can be connected to another element so that it activates the element when moving in one direction and deactivated when moving in the opposite direction.
  • the handle with the activatable blocking element is integrally formed and movable with the blocking element relative to the bearing body between a locking element in the locking position blocking the first position and the locking element releasing second position.
  • the locking element is movable only in the second position from the locking position to the unlocking position.
  • a displacement of the handle on the bearing body along the rotor axis from the first position to the second position and vice versa takes place. Since the handle is also moved along the axis of rotation for insertion of the rotor into the centrifuge and for removing the rotor from the centrifuge, the displacement of the handle for activating / deactivating the blocking element and the displacement of the handle for removal / insertion are coaxial. This saves the operator additional movement and therefore facilitates the operation of the rotor.
  • a movement of the handle with blocking element away from the cover corresponds to a movement into the first position and a movement of the handle with blocking element towards the cover means a movement into the second position.
  • the handle is spring-loaded in the direction of the lid.
  • the handle moves automatically with the blocking element in the second position, as soon as the rotor is inserted into a centrifuge or placed on a base, the operator releases the handle and thus no force acting in the direction away from the lid force is exerted more on the handle.
  • the locking element is now movable in an unlocked position. This automatic movement of the handle saves the operator another movement and in turn simplifies the operation of the rotor.
  • a locking device for fixing the rotor relative to the drive shaft of the centrifuge, wherein in the cover an activation element for activation the locking device is mounted, which is accessible when the lid is applied.
  • the locking device can be activated and deactivated without removing the cover from the rotor. This is of particular advantage if, for example, after a vascular fracture in the rotor contamination of the environment must be avoided.
  • the connection between the rotor and the drive shaft can be loosened and the rotor with the cover removed can be removed from the centrifuge. This makes the operation of the rotor safer.
  • a centrifuge is further provided which has a drive and a drive shaft at the free end of a support for a rotor according to one of the preceding claims rests with its seat.
  • Fig. 1 shows a side sectional view of a rotor 10 according to the invention with attached cover 40 and activated locking of the lid 40th
  • the rotor 10 has the basic shape of an upwardly tapering truncated cone.
  • a rotor head 12 receptacles 14 for sample container 16 are arranged at regular intervals to each other in a conventional manner.
  • the longitudinal extent of the receptacles 14 extends parallel to the lateral surface 12a of the rotor head 12.
  • Fig. 1 four sample containers 16 introduced into the receptacles 14 are shown. Closure caps 16a of the sample containers 16 project from the respective receptacles 14 into a receiving space 18 of the rotor 10.
  • a rotor seat 20 is concentrically introduced, which is assigned to the support 106 of the centrifuge 100.
  • the rotor seat 20 has a truncated cone-shaped first section 20a, which tapers in a withdrawal direction E and adjoins in the axial direction a cylindrical second section 20b.
  • the rotor seat 20 is delimited by a boundary surface 20c running perpendicular to the rotor axis R.
  • this boundary surface 20c concentric with the support 106 of the centrifuge 100 and facing away from the boundary surface 20c away along the rotor axis R extending locking ball 22 is arranged, the function of the Figures 3 . 3a and 3b will be explained in more detail.
  • a shoulder 35 is formed in the receiving space 18 concentric to the rotor axis R, on which a rotor pin 34 is likewise arranged concentrically, which has an outer contour 34a tapering conically towards its free end.
  • the rotor pin 34 is in Fig. 3 and especially in the cut-out drawing in Fig. 3a shown in more detail.
  • a lid 40 On the rotor 10, a lid 40 is applied, which closes the receiving space 18 aerosol-tight to the outside.
  • a handle 44 Concentric with the cover 40, a handle 44 is arranged, by means of which the lid 40 can be placed on the rotor 10 and removed from the rotor 10.
  • the handle 44 is partially introduced into a blind hole cylindrical recess 42 of the lid 40 and fixedly connected thereto in a conventional manner.
  • the recess 42 has a concentric with the rotor axis R formed opening 42a in the cylinder bottom of the recess through which engages the free end of the rotor pin 34 in the handle 44.
  • the axial extent of the recess 42 is dimensioned such that the end face 42b of the recess 42 facing the rotor seat 20 in the state of the cover 40 applied to the rotor 10 extends directly to an end face 35a of the shoulder 35.
  • the handle 44 in detail drawings in the Figures 2a, 2b and 2c shown.
  • the handle 44 has a cylindrical bearing body 46, on the outer wall, a wall 48 is slidably disposed in the axial direction.
  • two rocker arms 50 with respect to the rotor axis R are arranged opposite one another.
  • the longitudinal extension of the rocker arm 50 is substantially aligned axially.
  • the cross section of the rocker arm 50 has approximately centrally to the bearing body 46 facing toward thickening 52, which is rounded. Through these thickenings 52 in each case one of the better clarity, not shown strut 54, over which the rocker arm 50 is tilted.
  • the strut 54 thus forms with the associated recess in the thickening 52 a tilting joint for the rocker arm relative to the bearing body 46 and this at least partially completely surrounding wall 48.
  • actuator 56 extends to the Rocker arm 50.
  • the cross section of the rocker arm 50 tapers towards the upper end respectively.
  • the cross section of the rocker arm 50 likewise tapers in each case.
  • the actuators 56 are each associated with a recess 46a in the bearing body 46 and a recess 48a in the wall 48, through which the actuators 56 partially projecting laterally out of the handle 44.
  • each rocker arm 50 At the upper end of each rocker arm 50, a respective recess 60 is provided, in which one end of a along the bearing body 46 of the handle 44 arranged spring 62, in particular leaf spring, intervenes.
  • the springs 62 are clamped at their ends remote from the recesses 60 with the bearing body 46 and biased radially outward. Therefore, the upper ends of the rocker arms 50 are urged radially outwards by the spring 62 when, as in FIG Fig. 2a shown no manual application of force from the outside, and come into contact with the bearing body 46, and the actuating elements 56 protrude laterally out of the handle 44 maximum.
  • Fig. 2b is the handle 44 with the rocker arms 50 in the identical position as in Fig. 2a , the locking position, shown.
  • the wall 48 of the handle 44 is displaced axially relative to the bearing body 46 in the removal direction E.
  • This relative change in position of the wall 48 relative to the bearing body 46 takes place when an operator grips the handle 44 and raises without loosening the lock between the cover 40 and the rotor 10 so that it does not act on the actuating elements 56 and thereby force the rocker arms 50 tilts and removes the locking elements 58 from the introduced into the outer contour 34a of the rotor pin 34 groove 34b.
  • the wall 48 is acted upon by one of the better clarity, not shown spring acting against the withdrawal direction E force. As soon as the operator turns off the rotor 10 or inserts it into a centrifuge 100 and thus neutralizes the weight applied to the handle 44, the wall 48 returns to its original position and the blocking of the rocker arms 50 by the projection 48b is released. The projection 48b of the wall 48 thus forms a securing element which blocks or releases an actuation of the rocker arm 50 as needed, depending on the position in which it is located.
  • Fig. 2c the wall 48 of the handle 44 is shown again in its initial position.
  • the projection 48b is again below the rocker arm 50, whereby the in Fig. 2b shown blocking the rocker arm 50 is omitted.
  • the rocker arms 50 are tilted due to manual application of force to the actuators 56 about their tilting joints formed by strut 54 and associated recess 52 in the thickening, and the locking elements 58 are located outside the groove 34b.
  • the lock between the rotor 10 and cover 40 is released, and the lid 40 can be removed from the rotor 10.
  • the rotor pin 34 can be made significantly more compact and the recess 42 of the lid 40 longer, so that when removed cover more space in the receiving space 18 for sample container 16 is obtained, which can then be easily removed from the rotor and introduced into the rotor.
  • the length of the rocker arm 50 and the aspect ratio of the leg 56 associated with the actuating element and a leg associated with the locking element 58 can be changed and adapted to the respective circumstances.
  • the lid 40 is locked by the engagement of a latching element mounted in the lid 58 in a introduced into the rotor 10 recess 34b fixed to the rotor 10, and the lock can be arranged above the lid 40 at a position easily accessible to the operator Actuators 56 are released.
  • Fig. 3 shows a side sectional view of the rotor 10 - with respect to the Fig. 2a to 2c rotated by 90 ° - in exploded view with removed cover 40 and a support 106 of a centrifuge 100, as shown schematically in Fig. 5 is shown.
  • the closure ball 22 engages when placing the rotor 10 on the support 106 of the centrifuge 100 in an opening 110 of a concentrically arranged on the support 106 and screwed to the support 106 abutment insert 108 a.
  • the opening 110 is sized so that the closure ball 22 can pass with minimal play.
  • the opening 110 is followed by a conically tapering against the withdrawal direction E inner contour 112 of the abutment insert 108.
  • a spring 24 is arranged, in which a for clarity in FIG. 3b separately shown blocking unit 26 is mounted and acted upon in withdrawal direction E acting spring force.
  • the blocking unit 26 has four locking springs 30 connected via a connecting ring 28, at the end of which a blocking element 30a is attached.
  • the locking elements 30a are adapted in shape substantially to the outer contour of the closure ball 22.
  • the locking elements 30a and thus the entire locking unit 26 are first pressed by the penetrating through the opening 110 closure ball 22 down, in the region of the inner contour 112 in the abutment insert 108 which is larger than that Opening 110, so that the locking elements 30a can now be pushed apart.
  • the blocking elements 30a then slide along the closure ball 22 until they finally engage around the closure ball 22 when the rotor 10 is fully seated on the support 106.
  • the locking unit 30 moves through the spring force again in removal direction E, and the locking elements 30a come to the inner contour 112 of the abutment insert 108 in abutment.
  • the circumference of the closing ball 22 with the blocking elements 30a increases so that passing through the opening 110 of the abutment insert 108 is no longer possible.
  • the locking elements 30a can no longer move in the radial direction by the system on the inner contour 112 of the abutment insert 108 now.
  • the rotor 10 is thus securely fixed in the axial direction on the support 106 of the centrifuge 100.
  • the closure ball 22 is penetrated by a bore 32.
  • the bore 32 extends from the closure ball 22 through the rotor head 12 and the adjoining rotor pin 34 therethrough.
  • the inner diameter of the bore 32 widens in removal direction E at a first shoulder 32a and again at a second shoulder 32b.
  • a Entriegelungsdorn 36 Through the bore 32 engages a Entriegelungsdorn 36, which in turn has a first paragraph 32a of the bore 32 associated first paragraph 36a and the second paragraph 32b of the bore 32 associated second paragraph 36b.
  • Fig. 3 Marked with III a region in which the introduced into the bore 32 Entriegelungsdorn 36 is shown enlarged in Fig. 3a shown.
  • the mutually associated regions of the diameter of the Entriegelungsdorns 36 and the inner diameter of the bore 32 are adapted to each other so that the Entriegelungsdorn 36 in the bore 32 is axially displaceable.
  • An axial Movement of the Entriegelungsdorns 36 in the direction of the support 106 is limited and possible up to an end position at which the corresponding paragraphs 32a and 36a and the paragraphs 32b and 36b each come into contact with each other.
  • the longitudinal extension of the unlocking mandrel 36 is dimensioned so that a free end 38 against the withdrawal direction E emerges from the closure ball 22 when moving the Entriegelungsdorns 36, engages in the locking unit 26 and the locking unit 26 against the force applied by the spring 24 increasingly displaces, also the locking elements 30a slide along the locking ball 22 in the region of the inner contour 112, which is wider than the opening 110 of the abutment insert 108, so that the locking elements 30a can bend outward.
  • the blocking unit 26 Upon reaching the above-described end position of the unlocking mandrel 36, the blocking unit 26 is shifted by a distance s s far enough that the locking elements 30a completely release the locking ball 22, ie the locking elements 30a bend radially outwards when the locking ball 22 passes the locking elements 30a.
  • the closure ball 22 can now again pass through the opening 110 of the abutment insert 108, and the rotor 10 can be removed from the abutment 106 of the centrifuge 100.
  • an actuating pin 74 is provided in the handle 44, which forms an activation element 36, 74 together with the unlocking mandrel 36.
  • a bearing insert 70 is introduced, which terminates flush on the side facing away from the rotor 10 side with the gripping pieces 45.
  • An axial bore 72 passes through the bearing insert 70 and tapers stepwise at the end facing the rotor 10, so that an opening 72a is formed there whose diameter is less than the diameter of the bore 72.
  • the actuating pin 74 is slidably mounted in the bore 72 and comprises a cylindrical first portion 76, whose diameter is adapted to the inner diameter of the bore 72, and a cylindrical second portion 78, the diameter of the inner diameter of the Opening 72a is adapted.
  • the second section 78 passes through the opening 72a and engages in a laterally limited by the bearing body 46 interior 47 of the handle 44 a.
  • a formed between the first portion 76 and the second portion 78 paragraph 80 serves as a limitation for an axial displacement of the actuating pin 74 against the withdrawal direction E in an end position.
  • the free end of the first portion 76 is formed as a push button 82 which protrudes completely out of the bearing insert 70 in the non-actuated state and has a height h D.
  • the push button 82 Upon complete actuation of the push button 82, the push button 82 is flush with the exposed side of the bearing insert 70, and the actuating pin 74 is moved against the withdrawal direction E by a distance s B , which corresponds to the height h D. The actuating pin 74 thereby enters the previously described end position.
  • the unlocking mandrel 36 and the actuating pin 74 are dimensioned in their length so that their ends facing each other come into complete contact with the rotor 10 lid 40 in abutment.
  • the unlocking mandrel 36 and the actuating pin 74 together form an activation element 36, 74, by means of which the locking unit 26 axially displaced by the distance ss into a release position even with the cover 40 and the lock between the rotor 10 and shaft 104 can be deactivated as described above so that the rotor 10 can be removed from the support 106.
  • the height h D of the push button 82 in the present embodiment has the same length as the distance s B and the distance ss.
  • the push button 82 may also be formed higher, so that it protrudes from the bearing insert 70 in the activated state.
  • the height h D may not or only slightly less than the length of the lines s B and ss, otherwise the required for unlocking lifting height of the locking unit 26 is no longer achieved and unlocking is no longer guaranteed.
  • the activation element 36, 74 it is also possible to form the activation element 36, 74 in one piece and selectively either in the handle 44 of the lid 40 or in the receiving space 18 of the rotor 10, in the rotor pin 34, too to store. If the activation element 36, 74 is mounted in the handle 44, the rotor pin 34 can be made more space-saving, or it can even be almost completely dispensed with the rotor pin 34.
  • FIG. 4 As shown in perspective view, it can be seen how the locking mechanism 50, 34b for locking lid 40 and rotor and the locking device 22, 24, 26 for fixing the rotor 10 on the drive shaft 104 in the handle 44 are integrated. Conveniently, the two releases can be operated by the operator with just one hand, without significantly changing the position of the hand. As to unlock the locking device 22, 24, 26, which defines the rotor 10 on the shaft 104, a vertical pressure movement on the push button 82 is required, while the unlocking of the device which fixes the lid 40 on the rotor 10, on both sides horizontal Pressure is applied to the two actuators 56, the risk of incorrect operation is low.
  • Fig. 5 shows a side sectional view of a centrifuge 100 according to the invention, is omitted for clarity in the representation of a housing and a bottom.
  • FIGS. 1 to 4 described rotor 10 as already in connection with Fig. 3 is connected via the support 106 with the drive shaft 104 and rotated about the rotor axis R.
  • the drive shaft 104 is driven by the underlying motor 102.
  • the rotor 10 is surrounded by a safety boiler 116.
  • the engine 102 engages the safety boiler 116 through an opening 116a.
  • a centrifuge lid 118 is provided, which is connected to the housing, not shown, in a conventional manner and the centrifuge 100 closes at its top.

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  • Centrifugal Separators (AREA)

Claims (15)

  1. Rotor (10) d'une centrifugeuse (100) comprenant un axe de rotor (R), un espace de logement (18) pour les échantillons à centrifuger, un couvercle (40), qui délimite l'espace de logement (18) vers le haut et qui est agencé de manière concentrique par rapport au rotor, et qui présente sur sa face éloignée de l'espace de logement (18) une poignée (44) pour le transport du rotor et du couvercle (40), et un mécanisme de verrouillage du couvercle (40) et du rotor, qui est monté dans le couvercle (40) dans un palier (52, 54), dans lequel le mécanisme de verrouillage (50, 34b) comporte un élément de verrouillage (50) qui peut se déplacer entre une position de verrouillage et une position de déverrouillage et qui comprend un élément d'actionnement (56) et un élément d'encliquetage (58), dans lequel l'élément d'actionnement (56) et l'élément d'encliquetage (58) sont espacés l'un de l'autre axialement par rapport à l'axe de rotor (R), caractérisé en ce que l'élément de verrouillage (50) est formé par un culbuteur à l'extrémité supérieure duquel l'élément d'actionnement (56) est agencé et à l'extrémité inférieure duquel l'élément d'encliquetage (58) est agencé, dans lequel l'axe de pivotement dudit culbuteur est orienté perpendiculairement à l'axe de rotor (R).
  2. Rotor selon la revendication 1, caractérisé en ce que l'élément d'encliquetage (58), dans la position de verrouillage, s'insère dans un évidement du rotor, et/ou en ce que le mécanisme de verrouillage (50, 34b) comprend plusieurs éléments de verrouillage (50), lesquels sont identiques et lesquels sont agencés à une certaine hauteur par rapport à l'axe de rotor (R) et de manière symétrique les uns par rapport aux autres.
  3. Rotor selon l'une quelconque des revendications précédentes, caractérisé en ce que l'axe de pivotement divise l'élément de verrouillage (50) dans l'élément d'actionnement (56) et l'élément d'encliquetage (58).
  4. Rotor selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément d'encliquetage (58) et l'élément d'actionnement (56) présentent la même longueur.
  5. Rotor selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un tourillon (34), dans lequel est ménagé au moins un évidement (34b) pour l'insertion de l'élément ou des éléments d'encliquetage (58), est agencé coaxialement à l'axe de rotor (R) dans l'espace de logement (18), l'évidement (34b) ménagé sur le tourillon (34) est formé en particulier par une rainure annulaire.
  6. Rotor selon l'une quelconque des revendications 4 ou 5, caractérisé en ce que le tourillon (34) s'insère au moins partiellement dans la poignée (44) par une ouverture (42a) dans le couvercle (40).
  7. Rotor selon l'une des revendications 4 à 6, caractérisé en ce que le tourillon (34) est conique et rétrécit en direction de son extrémité libre, en particulier en ce que le tourillon (34) est agencé sur une partie en retrait coaxiale (35) sur laquelle est monté un joint (43) entourant le tourillon (34), en ce que, une fois verrouillé, le couvercle (40) repose sur le joint (43) et en ce que le joint (43) étanchéifie l'espace de logement (18) du rotor vis-à-vis du tourillon (34) ainsi que l'ouverture (42a) dans le couvercle (40).
  8. Rotor selon l'une quelconque des revendications précédentes, caractérisé en ce que l'élément de verrouillage (50) est sollicité par un ressort en direction de la position de verrouillage, et/ou en ce que la poignée (44) est en liaison fonctionnelle avec un élément de blocage (48b) activable, lequel, une fois activé, immobilise l'élément de verrouillage (50) du couvercle (40) et du rotor dans la position de verrouillage.
  9. Rotor selon la revendication 8, caractérisé en ce que le palier (52, 54) du mécanisme de verrouillage (50, 34b) est introduit dans un corps de palier (46), prenant en particulier la forme d'un cylindre, agencé sur la face supérieure du couvercle (40) de manière concentrique par rapport au couvercle (40) et relié fixement à celui-ci.
  10. Rotor selon la revendication 8 ou 9, caractérisé en ce que la poignée (44) est montée de manière concentrique par rapport au corps de palier (46) et de manière à pouvoir se déplacer par rapport au corps de palier (46).
  11. Rotor selon l'une quelconque des revendications 8 à 10, caractérisé en ce que la poignée (44) est réalisée d'une seule pièce avec l'élément de blocage (48b) activable, dans lequel la poignée (44) peut se déplacer avec l'élément de blocage (48b) sur le corps de palier (46) entre une première position bloquant l'élément de verrouillage (50) dans la position de verrouillage et une deuxième position libérant l'élément de verrouillage (50), dans lequel l'élément de verrouillage (50) ne peut être déplacé de la position de verrouillage dans la position de déverrouillage que dans la deuxième position,
  12. Rotor selon la revendication 11, caractérisé en ce que le coulissement de la poignée (44) sur le corps de poignée (46) est réalisé le long de l'axe de rotor (R) de la première position dans la deuxième position et vice versa, et/ou en ce qu'un déplacement de la poignée (44) avec l'élément de blocage (48b) à distance du couvercle (40) correspond à un déplacement dans la première position et un déplacement de la poignée (44) avec l'élément de blocage (48b) en direction du couvercle (40) correspond à un déplacement dans la deuxième position.
  13. Rotor selon l'une quelconque des revendications 11 ou 12, caractérisé en ce que la poignée (44) est sollicitée par un ressort en direction du couvercle (40).
  14. Rotor selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un dispositif d'arrêt (22, 24, 26) est destiné à immobiliser le rotor par rapport à un arbre d'entraînement (104) d'une centrifugeuse (100), dans lequel le dispositif d'arrêt (22, 24, 26) peut être actionné par le couvercle (40) appliqué sur le rotor.
  15. Centrifugeuse (100) comprenant un entraînement (102) et un arbre d'entraînement (104) à l'extrémité libre duquel un support (106) est prévu, sur lequel un rotor selon l'une quelconque des revendications précédentes repose avec son siège (20).
EP16182944.5A 2015-08-20 2016-08-05 Rotor d'une centrifugeuse Active EP3132854B1 (fr)

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Publication number Publication date
EP3132854A1 (fr) 2017-02-22
US10493469B2 (en) 2019-12-03
US20170050194A1 (en) 2017-02-23
CN106902995B (zh) 2019-05-31
DE102015113854A1 (de) 2017-02-23
CN106902995A (zh) 2017-06-30

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