Stirring system

Abstract

Stirring systems are known, comprising a stand (10), which has a stand foot (12), from which at least one holding rod (28, 30, 32) extends vertically, and a stirring mechanism (48), which is fastened at least indirectly to the at least one holding rod (28) in a height-adjustable manner, a container (66) for receiving one or more media, into which a stirring element (62) of the stirring mechanism (48) protrudes, and a container carrier (96), via which the container (66) can be positioned relative to the stand (10). In order to simplify the preparation and disassembly of the stirring system and to be able to connect different container sizes to the stirring system without having to make major changes to the system, according to the invention the container carrier (96) has a bearing element (92) with a bearing surface (94) which points towards the stirring mechanism (48) and on which the container (66) rests.

Description

[0001] stirring system

[0002] The invention relates to a stirring system with a stand which has a stand base from which at least one support rod extends vertically, an agitator which is at least indirectly fastened to the at least one support rod, a container for receiving one or more media into which a stirring element of the agitator projects, and a container carrier via which the container can be positioned relative to the stand.

[0003] Such stirring systems are used primarily in reactors for organic or aqueous synthesis. They are used for homogenizing and suspending substances or for emulsifying fats and oils. Both aqueous and highly viscous media can be mixed.

[0004] Various stirring systems have become known which can be used both as laboratory stirrers and on an industrial scale. Overhead stirrers are preferred, where the stirring element is inserted into the vessel from above. The drive unit of the stirrer is usually located above the vessel and the stirrer and is attached to a height-adjustable stand which has a stand base with which the stand and thus the entire stirring system stands on the floor or foundation. In addition to the stirrer and its drive, the vessel is usually also attached to the stand. This usually consists of a lower vessel section with a vessel base on which one or more drains for emptying the vessel are provided, as well as side openings for supplying temperature control media.The lower part of the vessel is closed by a lid through which the stirring element and, if necessary, additional sensors or other parts, such as glass attachments or hoses, protrude into the container.

[0005] Such a stirring system is described, for example, in EP 2 416 884 B1. The stirring system comprises a stand with a ring-shaped stand base, from which several support rods extend vertically, to which the stirrer and the container are at least indirectly attached. For greater stability, several of the support rods are connected to each other via cross braces. The container is attached to a fastening device via a collar. This collar surrounds a tapered area of ​​the container for attachment.

[0006] The problem with this stirring system, however, is that the removal of the agitator, at least down to the coupling, and the removal of the container lid from the container for filling, emptying, and cleaning requires considerable effort. Furthermore, the container must be manually held in position while being mounted, while simultaneously operating the collar, often requiring at least two people to attach the container to the stand and align it with the stirrer. Furthermore, different collars must be mounted for different container neck diameters.

[0007] The challenge, therefore, is to provide a stirring system that, on the one hand, enables the simplest possible removal and movement of the agitator and lid from the container, thus providing free access to the container. On the other hand, it allows containers of different volumes to be accommodated without additional modification. These containers can be easily attached and correctly aligned to the stirring system by a single user. This should simplify filling, emptying, and cleaning of the container. Furthermore, it is desirable for the stirring system to be adaptable to various structural requirements, while still avoiding incorrect assembly or incorrect spacing of the connected parts.

[0008] This object is achieved by a stirring system having the features of main claim 1.

[0009] The stirring system according to the invention has a stand which consists of a stand base and at least one support rod extending vertically from the stand base. The stand rests with the stand base on a work surface, the floor or another foundation. The stand base is designed in such a way that a safe and stable stand of the stand is guaranteed. Accordingly, the stand base extends at least in the direction in which attachments fastened to the support rods extend. For this purpose, the stand base can have either a large plate or several plates which are fastened to one another and extend essentially horizontally. For the purposes of the invention, the stand base also includes plates via which plates resting on the floor are connected to one another.

[0010] The stirring system further comprises an agitator which is at least indirectly attached to the at least one support rod. In the following, the term “at least indirectly attached” means that the agitator does not have to be attached directly to the support rod, but other components, such as struts, brackets or cross arms, can also be attached to the support rod, to which the agitator is in turn attached. The stirring system further comprises a container for holding one or more media, in particular liquids. The container can serve in particular as a reaction vessel. The media can also contain solids or gases. A stirring element of the agitator projects into the container and is rotated in the container to homogenise or disperse the media. This stirring element is usually arranged on a shaft which projects out of the container in the direction of a drive to which the shaft is connected, for example, via a coupling.The container can be positioned to the stand and thus to the agitator using a container carrier.

[0011] According to the invention, at least one of the support rods is designed as an extendable and retractable telescopic rod, which has a first section that is at least indirectly attached to the stand base and a second section that is displaceable relative to the first section and rotatable relative to the first section and can be fixed in position via a locking device. This means that with just one movement of the handle, the length of the support rod can be changed, as can the angle of rotation of the upper section of the support rod to the stand base or to the lower section. Such a telescopic rod enables simple adjustment of the axial or vertical height, so that axial distances can always be maintained. Furthermore, this enables two components to be placed axially on top of one another, such as placing the drive on the shaft of the stirring element or the lid on the container.Furthermore, the rotatable design allows the components to be pivoted sideways, providing better access to the open container. By adjusting the upper section of the support rod relative to the lower section, it is possible to pivot the attachments away from or toward the container, as well as to increase or decrease the vertical distance. This significantly simplifies handling for emptying, filling, or cleaning the container and reduces setup and cleaning times. The locking mechanism allows the extendable and rotatable section and the attached attachments to be fixed in position with a single movement.

[0012] Preferably, a drive module of the agitator is attached at least indirectly to a first support rod, which is designed as a rotatable telescopic rod. This drive module can contain the agitator element or merely have the coupling for the rotationally fixed coupling of the agitator element. This makes it possible to remove the drive module vertically from the container or the agitator element with just one movement, as well as to completely expose the installation space above the container by pivoting it and fix it in the desired position. Naturally, the subsequent alignment and attachment to the container is also simplified in the same way.

[0013] Furthermore, it is advantageous if a lid of the container is at least indirectly attached to a second support rod, which is designed as a rotatable telescopic rod. Accordingly, the lid, and optionally a lid fastening clamp or the stirring element, can be removed vertically from the container and then pivoted to completely free the installation space above the container, or can be aligned with the container in a corresponding manner and placed on the container. This, along with securing it in the desired position, can be achieved with a single manual movement.

[0014] The container carrier preferably has a support element with a support surface facing the agitator, on which the container rests. In particular, a section of the container's base surface rests on the support surface. When fastening and positioning the container, it no longer needs to be held manually in its fastening position, but can be set down before its final fastening and easily released again without requiring separate protection against falling. This significantly simplifies handling and shortens setup times. Setup can also be carried out by a single person. Furthermore, it is possible to support containers of different sizes using the container carrier, thus increasing flexibility and again reducing setup times.

[0015] Preferably, the container support can be positioned in a defined manner in the radial direction with respect to a rotational axis of the agitator relative to the stand via alignment means formed on the stand. In the radial direction with respect to a rotational axis of the agitator means that lateral offset during alignment is avoided. These alignment means serve to correctly position the container relative to the agitator or to a lid of the container that is mounted on the stand. Shapes or fixed spacers can be used as alignment means. These alignment means do not have to fix the container in this position, but merely identify it clearly. Accordingly, by using these alignment means, the support element is always correctly positioned relative to the stand and thus to the lid and agitator.

[0016] Preferably, the support element is at least partially annular, with this partial ring extending over at least 240°. However, the support element can also be designed as a closed ring. This partial ring shape allows the bottom of the container, which typically has a drain outlet, to remain easily accessible. Nevertheless, safe placement is still possible.

[0017] In a further embodiment of the partial ring, the opening of the partially ring-shaped support element faces a side facing away from the at least one support rod of the stand and has an opening width that is larger than the diameter of a drain outlet of the container. This ensures the secure stability of the container and facilitates its placement on the support surface, as it can be pushed into the support element from the user side without having to lift the drain outlet above the support element. This also makes it possible to attach a hose to the drain outlet in advance.

[0018] It is particularly advantageous if the support surface is designed to slope radially inward. The bottom of conventional containers is also designed to slope radially inward to allow for complete emptying, so that, regardless of the container size, a secure, at least partially flat support is always created, which also counteracts tipping of the container.

[0019] In a further advantageous embodiment, the support surface is shaped to correspond to a section of the container's base, with which the container rests on the support surface. This means that a flat support is created in the area of ​​the support surface, which also ensures a defined positioning of the container on the support element. This support surface can, in particular, be formed by an elastic surface, thus preventing the container from slipping and compensating for unevenness.

[0020] In a particularly preferred embodiment, the container support has three legs, to the ends of which the support element is attached, and which are arranged essentially evenly distributed around the circumference. Such a tripod always has a defined, stable base, thus preventing the container support from tipping over. This design also has the advantage that the container can be placed on the container support in advance and moved with the container support to the stand. A corresponding distance from the rest of the stirring system is also possible.

[0021] In a further embodiment, at least one, preferably three, receptacles are formed on the stand base as alignment means, into each of which one of the legs of the container support protrudes. This easily defines the position of the container support relative to the stand and thus to the agitator. This eliminates incorrect assembly. These receptacles can be formed as circumferential recesses or partially closed recesses. Additional devices, for example, for force-locking fastening, can also be provided at the recesses.

[0022] In a further development of this design, the three mounts are formed by recesses in the tripod base. This provides the alignment tools easily and without the need for additional components.

[0023] In a further advantageous embodiment, two of the three recesses are formed on an inner side at one end of two longitudinal beams of the stand base, and a third recess is formed centrally at one end of a central longitudinal beam or on one of the crossbeams. The container support with its three legs can be slid from one side into the recesses of the longitudinal beams and, if applicable, the crossbeam. The tripod can thus be pushed into the recesses from the front and is automatically aligned. This reliably prevents misalignments between the agitator and the container.

[0024] Alternatively, it is preferred if two of the receptacles are formed by recesses in the tripod base, and the third receptacle is formed by an intersection between two crossbeams of the tripod base, with the crossbeams arranged at an angle of less than 170° to each other. This clearly defines the positions for all three legs and thus the positioning on the tripod without the need for additional attachments.

[0025] In a further embodiment of the invention, the two recesses are formed on the inside at one end of two longitudinal beams of the tripod base, and the container carrier with its three legs can be moved from one side into the recesses and towards the intersection of the cross beams. The tripod base thus has the two longitudinal beams and the two cross beams connecting the longitudinal beams. Accordingly, the tripod can be aligned precisely with the tripod base. The recesses in the longitudinal beams are open at the front, so that the tripod is pushed into these recesses and towards the intersection of the cross beams until all three legs are in contact and can no longer be moved. Sideways movement of the legs, and thus of the container carrier, is also impossible. Furthermore, it is advantageous if two handles are formed on the container carrier.These allow easy transport of the container carrier both with and without a container mounted on it.

[0026] In a further embodiment, the three support legs have a horizontal extension section connected to the support element, with an at least partially vertically extending clamping element arranged horizontally on each of these horizontal extension sections and movable relative to the container. The clamping element can also include rotatable elements that can be rotated relative to the container. These clamping elements reliably secure the container against lateral tipping.

[0027] In an alternative embodiment to the tripod, the container support has at least two support arms that are attached to the stand and to which the support element is attached. By attaching the support element via the fixed-length support arms, the support element is also clearly aligned in its position relative to the stand and thus to the agitator. This eliminates any inaccurate positioning of the container support and thus the container.

[0028] In a further advantageous embodiment, annular fastening means are formed at the ends of the support arms opposite the support element, which can be slid over two support rods of the stand. The support rods, particularly in conjunction with the fastening means, serve as alignment means for the container support. The support rods thus define the position of the container support relative to the stand and thus to the agitator.

[0029] The annular fastening means advantageously have at least one through-hole with an internal thread on their annular surface, through which a screw body protrudes, which can be rotated against the support rod for a force-locking connection. Accordingly, it is possible to adjust the height of the container carrier and thus the container and to fix it at any axial position on the support rod.

[0030] In an alternative embodiment, the annular fasteners rest axially against a support body on the support rods, so that the support rods also serve to ensure precise axial positioning of the container carrier. It is also advantageous if the lid for closing the container is connected to the second support rod via a movable and pivoting cross arm. This allows the lid to be adjusted to the position of the container, thus avoiding stresses between the components.

[0031] In a further development, a lever is attached to the cross arm via a joint, through which a clamp for securing the lid to the container is attached. The lid is thus guided to the lid in a merely pivoting manner, allowing for compensation of small tolerances between the container and the lid. This lever can also be designed with two joints at each end.

[0032] Preferably, an opening is formed on the lid through which the agitator element of the agitator protrudes into the container. This allows the container to be tightly sealed to the outside.

[0033] Furthermore, it is advantageous if the stirring element is connected to the agitator drive via a coupling, which can be mechanical or magnetic. This simplifies assembly, as the stirring element can be pre-mounted on the cover and only needs to be connected to the drive afterwards. This also significantly simplifies sealing, as the stirring element only needs to be guided through the opening with its shaft from below.

[0034] It is particularly preferred if the tripod base has several insertion openings into which the support rods can be inserted. This allows multiple support rods to be used and the setup can be modified depending on the application. However, the positions and distances defined by the insertion openings are maintained.

[0035] The agitator is preferably pivotable and its distance from the support rod is adjustable, and is attached to one of the support rods via a cross arm. This allows for subsequent adjustment of the agitator's position relative to the container.

[0036] To increase the stability of the tripod, at least two of the support rods are connected to each other via a cross brace that can be moved along the support rods and fixed in position. This prevents the support rods from tipping slightly in the insertion openings and determines the distances between the support rods. It is also advantageous if the cross arms and cross braces are attached to the support rods via fastening elements that are attached to the cross arms and cross braces or are formed integrally with them and that surround the support rods circumferentially. In whose outer surface at least one through hole with an internal thread is formed, through which a screw body protrudes. The screw body can be rotated against the support rod to create a force-locking connection. This design enables the cross arms and cross braces to be moved vertically and to be fixed in the desired position.

[0037] This creates a stirring system that significantly simplifies the attachment, alignment, and removal of the container. This can be performed by a single person, reliably avoiding errors in the relative arrangement of the stirring system components. This also significantly reduces setup times when changing applications. Furthermore, the stirring system offers a high degree of flexibility in its design, facilitating adaptation to different applications.

[0038] Two non-limiting embodiments of stirring systems according to the invention are shown in the figures and are described below.

[0039] Figure 1 shows a perspective view of a first embodiment of a stirring system according to the invention.

[0040] Figure 2 shows another perspective view of the stirring system from Figure 1 without the container and agitator.

[0041] Figure 3 shows a perspective view of a second embodiment of a stirring system according to the invention.

[0042] Figure 4 shows another perspective view of the stirring system from Figure 3 without the container and agitator.

[0043] The stirring system according to the invention, shown in Figure 1, consists of a stand 10 with a stand base 12, with which the stand 10 stands on the floor. The stand base 12 consists of a total of three longitudinal beams 14, 16, 18, two of which laterally delimit the stand 10 and extend forward, towards an operator side of the stirring system. The third longitudinal beam 18 is arranged centrally between the two other longitudinal beams 14, 16 and extends from an area covered by two cross beams 20, 22 to a side opposite the operator side. The two cross beams 20, 22 form an angle of approximately 120° with each other and have an extension component towards the operator side. They are connected to the three longitudinal beams 14, 16, 18 by means of screws 24.

[0044] On the longitudinal beams 14, 16, 18 and the cross beams 20, 22, which together form the tripod base 12, insertion openings 25, 26, 27 are formed, into which support rods 28, 30, 32 are inserted. These insertion openings 25, 26, 27 are formed in hollow cylinders 34, 35, 36 that are attached to the tripod base 12. A first support rod 28 is inserted into the first insertion opening 25 of the first hollow cylinder 34 on the first cross beam 20 and extends vertically upward. This first support rod 28 is designed as a rotatable telescopic rod, which has a first section 51 firmly attached to the tripod base 12 and a movable section 53, at the lower end of which a locking member 39 is arranged. The second section 53 can be pushed over or pulled out of the first section as well as twisted towards it.The locking member 39 can then be actuated via the handwheel 41, thus fixing the second section in the desired position. At the upper end of the second section 53, the first support rod 28 has a fastening member 38 for a first cross arm 40. This first cross arm 40 is inserted into an opening 42 of the fastening member 38 and can be fixed in position via a screw body 43 with a handwheel 44. The length of the first cross arm 40 can be adjusted accordingly. At the end of the first cross arm 40 facing the operator side, a drive module 46 of an agitator 48 is attached, which is designed as an overhead agitator. This has a user interface 50, a corresponding control unit 52, and an electric motor drive 54, which may also include a gear unit.By designing the first support rod 28 as a rotatable telescopic rod, it is thus possible to both pivot the agitator 48 relative to the stand base 12 and adjust its distance from the stand base 12. In addition, the distance to the first support rod 28 can be varied via the cross arm 40.

[0045] The drive 54 is connected to a shaft 60 of a stirring element 62 of the agitator 48 via a quick-action chuck 56 and a coupling 58, which can be designed as a magnetic or mechanical coupling. The shaft 60 projects through a sealed opening 63 of a lid 64, via which a container 66 is closed. The lid 64 is connected to the second support rod 30 via a second cross arm 68 and a second fastening element 70. This second fastening element 70 can be fixed in its position on the second support rod 30 via a screw body 69, which can be operated by means of a handwheel 44 and is rotated into an internal thread of a through-bore 71 in a lateral surface 73 of the fastening element 70. The second fastening element 70 has a bore 72 in which the second cross arm 68 can be displaced. In its aligned position, it can also be fixed by means of a screw operated by means of a handwheel 44.

[0046] A lever 76 is attached to the second cross arm 68 via a joint 74. At the opposite end of the lever, a clamp 80 is connected, again via a joint 78, by means of which the lid 64 is fastened to the container 66. The second support rod 30 is inserted into the second insertion opening 26 of the second hollow cylinder 35 on the second cross member 22, extends vertically upward, and is also designed as a telescopic rod which, like the support rod 28, has a fixed first section 51 and a second section 53 that is vertically movable and pivotable relative thereto. The support rods 28, 30 are fixed in the hollow cylinders 34, 35 via wing screws 82.

[0047] The third support rod 32 is also fastened in the third insertion opening 27 of the third hollow cylinder 36 via a wing screw 82, the third insertion opening 27 being formed on the side of the central longitudinal member 18 facing away from the operator side. The first support rod 28 is connected to the third support rod 32 via a cross brace 84, at the ends of which fastening elements 86 are formed, which are fixed to the support rods 28, 32 via screws actuated by handwheels 44. The three support rods 28, 30, 32 and the stand base 12 are designed symmetrically to a plane spanned by the shaft 60 and the third support rod 32. However, it is also possible to arrange the three support rods 28, 30, 32 asymmetrically to one another.

[0048] Additional support rods 88 are inserted into insertion openings 90 formed on the longitudinal and transverse beams 14, 16, 18, 20, 22 of the stand base 12. Additional hollow cylinders 91 with insertion openings 93 are also provided, into which the support rods 28, 30, 32 can be alternatively inserted.

[0049] The container 66 rests from above on a support surface 94 of a container carrier 96, which is formed on a support element 92 and can be seen in particular in Figure 2. The support element 92 is partially annular and extends over approximately 320°, with an opening 97 of the partial circle having side surfaces 98 running parallel to one another and facing the user side. The opening 97 is slightly larger than a lower drain nozzle 100 of the container 66, so that the container can be inserted from the front and does not have to be lifted over a closed ring with the drain nozzle 100. An inner region of an upwardly facing surface 102 of the support element 92 serves as a support surface 94 and has a shape that essentially corresponds to a base 104 of the container 66 in this region, so that the container rests flatly. For this purpose, the upwardly facing surface 102 is designed to slope radially inward.

[0050] The container carrier 96 additionally has three support legs 106 distributed evenly over the circumference, which initially extend horizontally radially outwards from the support element 92. These horizontal extension sections 108 of the support legs 106 are each connected via a 90° bend 110 to vertical extension sections 112, on whose free ends the container carrier 96 stands. Horizontally displaceable clamping elements 114 are fastened to the horizontal fastening section 108, which initially extend vertically upwards and have arc-shaped, rotatable clamping members 116 in the upper end region, which can be rotated or pushed laterally against the container 66 in order to protect it from lateral tipping. Furthermore, two radially opposite handles 118 extending from the support element 92 are formed on the container carrier 96.

[0051] In order to correctly and reproducibly align this container carrier 96 and, with it, the container 66 to the stand 10 and thus to the agitator 48 and the lid 64, alignment means 120 are formed on the stand 10, which in the present embodiment are designed to correspond to the vertical extension sections 108. The alignment means 120 are formed by three receptacles 122, 124, 126, of which the first receptacle 122 is formed by a first recess 128 on the first longitudinal support 14, which is open towards the operator side and points towards the opposite second longitudinal support 16. The second receptacle 124 is formed by a second recess 130 on the second longitudinal member 16, is also open towards the operator side and points towards the opposite first longitudinal member 14. The third receptacle 126 is formed by an intersection point 132 between the cross members 20, 22 arranged at an angle to one another.This intersection point 132 and the recesses 128, 130 are arranged and spaced from one another in such a way that they correspond to the arrangement and spacing of the vertical extension sections 112 of the support legs 106. This has the consequence that the container support 96 can be placed with the ends of its support legs 106 precisely into these receptacles 122, 124, 126. This can also be achieved by sliding, since the receptacles 122, 124, 126 are open towards the operator. Nevertheless, the receptacles 122, 124, 126 ensure that the container support 96, and with it the container 66, are always aligned in the same way with respect to the stand 10. Figures 3 and 4 show an alternative embodiment of the stirring system according to the invention, wherein the same reference numerals are used for the same components. This embodiment differs in the design of the container support 96 and its fastening.

[0052] The support element 92 is formed here as a full circle, which, however, also has the support surface 94 sloping radially inward. Two support arms 134, 136 extend from the support element 92, each end of which is provided with an annular fastening means 138, 140. The first fastening means 138 at the end of the first support arm 134 engages around the first support rod 28, while the other support arm 136 extends toward the third support rod 32, with the second fastening means 140 correspondingly engaging around the third support rod 32. The first and third support rods 28, 32 serve as alignment means 120 for the container carrier 96 relative to the stand 10.The fastening means 138, 140 can either be axially fixed again via screws 137, which are screwed into an internal thread in through holes 139 of the annular surfaces 141 of the fastening means and against the support rods 28, 32, or they rest against a height-adjustable or fixed support body 142. In the present case, the hollow cylinders 34, 36 into which the first and third support rods 28, 32 are inserted serve as the support body 142. Even with this design, the container 96 and its drain connection 100 remain easily accessible.

[0053] If, in the first or second exemplary embodiment, the container 66 is to be emptied or cleaned, both the agitator 48 and the lid 64 with the clamp 80 can be removed from the container 66 by vertically sliding and then pivoting the second section 53 of the support rods 28, 30 designed as telescopic rods. Both parts can simply be pivoted to the side and secured using the locking member 39, so that a free space is created above the container 66 for filling, emptying or cleaning. If operation is to be resumed subsequently, the locking member 39 is released, and by rotating and retracting the second section 53 towards the first section 51 of the support rods 28, 30, the agitator 38 and the lid 64 with the clamp 80 are realigned with the container 66 and then locked in this position again using the locking member 39.

[0054] Both versions allow for easy disassembly of the agitator system without tools. Attaching the container, lid, and agitator to the container is significantly simplified and can be easily performed by a single user. Different container sizes can also be used without making any additional modifications to the structure. The container can be easily removed and set down. The lid and overhead agitator can be pivoted and aligned with the container, simplifying filling and emptying.

[0055] It should be clear that various modifications are possible and individual features of the two embodiments are interchangeable. Thus, in the second embodiment, the ring can also be designed as a partial circle. The container support can also be used advantageously without necessarily having to use the telescopic rods. A rubber coating can also be provided on the support surface for a better hold of the container, or the shape can be adapted exactly to the shape of the base. The support rods designed as telescopic rods can be inserted into the

[0056] Insertion openings can be inserted if conversion is necessary. Defined distances are maintained.

Claims

PATENT CLAIMS 1. A stirring system comprising a stand (10) having a stand base (12) from which at least one support rod (28, 30, 32) extends vertically, an agitator (48) which is at least indirectly fastened to the at least one support rod (28), a container (66) for receiving one or more media, into which a stirring element (62) of the agitator (48) projects, and a container carrier (96) via which the container (66) can be positioned relative to the stand (10), characterized in that at least one of the support rods (28, 30, 32) is designed as an extendable and retractable telescopic rod having a first section (51) which is at least indirectly fastened to the stand base (12) and a second section (53) which is displaceable relative to the first section (51) and rotatable relative to the first section (51) and can be fixed in its position by means of a locking member (39).

2. Stirring system according to claim 1, characterized in that a drive module (46) of the agitator (48) is fastened at least indirectly to the second section (53) of a first holding rod (28), which is designed as a rotatable telescopic rod.

3. Stirring system according to claim 1 or 2, characterized in that a lid (46) of the container (66) is at least indirectly attached to the second section (53) of a second holding rod (30) which is designed as a rotatable telescopic rod.

4. Stirring system according to one of the preceding claims, characterized in that the container carrier (96) has a support element (92) with a support surface (94) facing the agitator (48) on which the container (66) rests.

5. Stirring system according to one of the preceding claims, characterized in that the container carrier (96) can be positioned in a defined manner relative to the stand (10) in the radial direction with respect to a rotational axis of the agitator (48) via alignment means (120) formed on the stand (10).

6. Stirring system according to claim 4 or 5, characterized in that the support element (92) is at least partially annular and extends circumferentially over at least 240°.

7. Stirring system according to claim 6, characterized in that an opening (97) of the partially annular support element (92) points to a side facing away from the at least one holding rod (28, 30, 32) of the stand (10) and has an opening width which is larger than the diameter of a drain nozzle (100) of the container (66).

8. Stirring system according to one of the preceding claims, characterized in that the support surface (94) is designed to slope radially inwards.

9. Stirring system according to one of the preceding claims, characterized in that the support surface (94) is shaped corresponding to a portion of a bottom (104) of the container (66) with which the container (66) rests on the support surface (94).

10. Stirring system according to one of the preceding claims, characterized in that the container carrier (96) has three legs (106), to the ends of which the support element (92) is fastened, and which are arranged substantially uniformly distributed over the circumference.

11. Stirring system according to claim 10, characterized in that three receptacles (122, 124, 126) are formed on the stand base (12) as alignment means (120), into each of which one of the support legs (106) of the container carrier (96) projects.

12. Stirring system according to claim 11, characterized in that the three receptacles (122, 124, 126) are formed by recesses (128, 130) on the tripod base (12).

13. Stirring system according to claim 12, characterized in that two of the three recesses (128, 130) are formed on an inner side at one end of two longitudinal beams (14, 16) of the stand base (12) and a third recess is formed centrally at one end of a central longitudinal beam (18) or on one of the cross beams (20, 22) and the container carrier (96) with its three support legs (106) can be moved from one side into the recesses (128, 130) of the longitudinal beams (14, 16, 18).

14. Stirring system according to claim 11, characterized in that two of the receptacles (122, 124) are formed by recesses (128, 130) on the stand base (12) and the third receptacle (126) is formed by an intersection point (132) between two cross members (20, 22) of the stand base (12), which are arranged at an angle of less than 170° to one another.

15. Stirring system according to claim 14, characterized in that the two recesses (128, 130) are formed on an inner side at one end of two longitudinal beams (14, 16) of the stand base (12) and the container carrier (96) with its three legs (106) can be moved from one side into the recesses (128, 130) and towards the intersection point (132) of the cross beams (20, 22).

16. Stirring system according to one of claims 10 to 15, characterized in that two handles (118) are formed on the container carrier (96).

17. Stirring system according to one of claims 10 to 16, characterized in that the three legs (106) have a horizontal extension section (108) connected to the support element (92), wherein on this horizontal extension section (108) in each case an at least partially vertically extending Clamping element (114) is arranged to be horizontally displaceable and can be moved against the container (66).

18. Stirring system according to one of claims 1 to 9, characterized in that the container carrier (96) has at least two support arms (134, 136) which are fastened to the stand (10) and to which the support element (92) is fastened.

19. Stirring system according to claim 18, characterized in that annular fastening means (138, 140) are formed on the ends of the support arms (134, 136) opposite the support element (92), which fastening means can be pushed over two holding rods (28, 32) of the stand (10), the holding rods (28, 32) serving as alignment means (120) for the container carrier (96).

20. Stirring system according to claim 19, characterized in that the annular fastening means (138, 140) have on their annular surface (141) at least one through-bore (139) with an internal thread through which a screw (137) projects, which is rotatable for the non-positive connection against the holding rod (28, 32).

21. Stirring system according to claim 19, characterized in that the annular fastening means (138, 140) bear axially against a contact body (142) on the holding rods (28, 32).

22. Stirring system according to one of the preceding claims, characterized in that the lid (64) for closing the container (66) is connected to the second holding rod (30) via a displaceable and pivotable transverse arm (68).

23. Stirring system according to claim 22, characterized in that a lever (76) is fastened to the cross arm (68) via a joint (74), via which a clamp (80) for fastening the lid (64) to the container (66) is fastened.

24. Stirring system according to one of claims 22 or 23, characterized in that an opening (63) is formed on the lid (64) through which the stirring element (62) of the agitator (48) projects into the container (66).

25. Stirring system according to one of the preceding claims, characterized in that the stirring element (62) is connected to a drive (54) of the agitator (48) via a mechanical or magnetic coupling (58).

26. Stirring system according to one of the preceding claims, characterized in that a plurality of insertion openings (25, 26, 27, 90, 93) are formed on the stand base (12), into which the holding rods (28, 30, 32, 88) can be inserted.

27. Stirring system according to one of the preceding claims, characterized in that the agitator (48) is attached to one of the support rods (28) via a cross arm (40) in an adjustable manner in its distance from the support rod (28).

28. Stirring system according to one of the preceding claims, characterized in that at least two of the support rods (28, 32) are connected to one another via a cross strut (84) which is displaceable on the support rods (28, 32) and fixable in its position.

29. Stirring system according to one of claims 22 to 28, characterized in that the fastening of the cross arms (40, 68) and cross struts (84) on the holding rods (28, 30, 32) takes place via fastening elements (38, 70, 86) which are fastened to the cross arms (40, 68) and cross struts (84) or which are formed integrally with them and which circumferentially surround the holding rods (28, 30, 32), and in whose outer surface (73) at least one through-bore (71) with an internal thread is formed, through which a screw body (69) projects, which can be rotated against the holding rod (28, 30, 32) for the purpose of a force-fitting connection.

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