DE102024106470A1 - Guide device for a stirrer, stirrer and arrangement - Google Patents

Abstract

The invention relates to a guide device (10) for an agitator (12), in particular a submersible agitator for industrial, biogas or agricultural use, for axially guiding the agitator (12) along a guide mast (14) between an upper service area of the guide mast (14) and a lower operating area of the guide mast (14), wherein the agitator (12) can be fastened to the guide device (16) and the guide device (16) can be fixed axially guideably to the guide mast (14). It is proposed that the guide device (16) be designed in two parts as a quick-release guide device (16) with a guide part (26) that can be assigned or is assigned to the agitator (12) for guiding the agitator (12) along the guide mast (14), and with a closure part (28) that can be assigned or is assigned to the guide part (26) for axially displaceably fixing the guide part (26) to the guide mast (14), wherein the The guide part (26) has at least one insertion receptacle (30) open on one side for the closure part (28), into which the closure part (28) can be inserted and locked at least in sections in a closure position for fixing the guide part (26) to the guide mast (14), so that the quick-release guide device (16) can be fixed in the closure position by the interaction of the guide part (26) and the closure part (28) on the guide mast (14), in particular in the Z direction, in an axially displaceable manner.

Description

The invention relates to a guide device for an agitator, in particular a submersible agitator for industrial, biogas or agricultural use, for axially guiding the agitator along a guide mast between an upper service area of the guide mast and a lower operating area of the guide mast, wherein the agitator can be fastened to the guide device and the guide device can be fixed to the guide mast in an axially guideable manner.

STATE OF THE ART

A large number of guide devices of the type mentioned above for guiding agitators on guide masts are known from the prior art.

Agitators are used in a wide variety of industrial, biogas, and agricultural applications. Typically, the agitator is a submersible agitator, which, when used as intended within the respective application area, is regularly immersed in a medium, such as liquid manure, contained in a container, such as a biogas tank, to ensure thorough mixing.

To ensure safe and user-friendly mounting of the usually large and heavy agitator on or in the tank and to ensure its immersion in the medium, the agitator is typically mounted on a guide mast located within the tank using a guide device. The guide device is designed to provide axial guidance, i.e., guidance along the longitudinal axis of the guide mast, of the agitator, so that the agitator is fixed and movable along the guide mast with the aid of the guide mast and guide device.

This allows the agitator to be moved, particularly by means of a cable, between an upper service area of the guide mast, which is usually located outside the medium, and a lower operating area of the guide mast, which is usually located inside the medium. Maintenance of the agitator is typically carried out in the service area, whereas its intended use—i.e., mixing the medium—occurs in the operating area. In other words, the agitator can be immersed in the medium using the guide device and, if necessary, removed from the medium by appropriate guidance along the guide mast.

In order to be able to move the agitator generally along the guide mast, the agitator is usually held by a lifting rope. Using the lifting rope, the force required for moving it, particularly upwards towards the service area and usually generated by a motor, is transferred to the agitator using the principle of a cable pull. The agitator is usually lowered into the operating area by gravity, with controlled cable feed counteracting an abrupt drop, i.e. the agitator is lowered in a controlled manner using the lifting rope. By setting a fixed rope length and thus avoiding further lowering due to gravity, the agitator can ultimately be locked or held in at least one definable operating position.

The fixing, i.e., the axially movable mounting of the agitator on the guide mast by means of the guide device, is usually done by means of at least two bolts or fixed studs. These bolts secure the guide device or agitator to the guide mast in such a way that it can only be moved axially along the guide mast and cannot be removed any further from the guide mast, thus securing it to the guide mast.

In this regard, for example, the DE 195 17 901 C1 a submersible agitator which can be fixed to a guide mast by means of a guide device in which the guide device with the submersible agitator mounted thereon is fastened to the guide mast by means of two bolts.

• So ist es insbesondere zu Wartungszwecken notwendig, das Rührwerk in den Servicebereich zu verfahren und insbesondere zusätzlich den Füllstand des Behälters abzusenken, um an die die Führungsvorrichtung bzw. das Rührwerk an dem Führungsmast festlegenden Bolzen zu gelangen und diese zu lösen, sodass dass Rührwerk von dem Führungsmast genommen werden kann. Das Rührwerk ist dabei zur Sicherung weiter an dem Hebeseil gehalten, insbesondere um es nach dem Lösen der Bolzen ohne Absturzgefahr entnehmen zu können. Die Problematik, die hierbei regelmäßig auftritt ist, dass das an dem Hebeseil befindliche Rührwerk oftmals nicht im Schwerpunkt ist, sodass die Bolzen aufgrund des nicht unerheblichen Gewichts des Rührwerks starken Belastungen ausgesetzt sind, insbesondere dann, wenn bereits einer der Bolzen gelöst ist.

However, the known guide devices have the disadvantage that removing the agitator, i.e. removing it from the guide mast, is relatively complex and involves a considerable risk of damage:

• For maintenance purposes, it is necessary to move the agitator into the service area and, in particular, to lower the fill level of the container in order to access and loosen the bolts that secure the guide device or agitator to the guide mast, so that the agitator can be removed from the guide mast. The agitator is still held by the lifting cable for safety, in particular so that it can be removed after the bolts have been loosened without the risk of falling. The problem that regularly arises is that the agitator attached to the lifting cable is often not in the center of gravity, so that the bolts are subjected to heavy loads due to the considerable weight of the agitator. are exposed, especially if one of the bolts is already loose.

Due to the possible need to lower the container fill level in conjunction with the regularly occurring high loading forces during removal and the associated risk of damage and/or wear, securing using the known guide devices is generally complex, dangerous and therefore inefficient.

The object of the invention is therefore to provide a guide device which is improved with regard to the problems discussed above and which, in particular, enables easy removal of the agitator under comparatively low loading forces.

This object is achieved by a guide device, an agitator, and an arrangement according to the independent claims. Advantageous embodiments of the invention are the subject of the dependent claims.

DISCLOSURE OF THE INVENTION

The invention relates to a guide device for an agitator, in particular a submersible agitator for industrial, biogas or agricultural use, for axially guiding the agitator along a guide mast between an upper service area of the guide mast and a lower operating area of the guide mast, wherein the agitator can be fastened to the guide device and the guide device can be fixed to the guide mast in an axially guideable manner.

When the guide device is used as intended, the agitator is attached to the guide device, which is secured to the guide mast for axial guidance. The guide device is designed such that the agitator can be attached to it and the guide device can be secured to the guide mast.

The axial direction in which the guide device can be guided is the longitudinal axis of the guide mast.

According to the invention, the guide device is designed in two parts as a quick-release guide device with a guide part that can be assigned or is assigned to the agitator, preferably essentially U-shaped, for guiding the agitator along the guide mast, and with a closure part that can be assigned or is assigned to the guide part and is essentially bow-shaped, in particular square or rectangular, for axially displaceably securing the guide part to the guide mast, wherein the guide part has at least one insertion receptacle for the closure part, which is in particular angled in some areas and open on one side, into which the closure part can be inserted, in particular inserted, and locked, in particular in a form-fitting manner, at least in sections into a closed position to secure the guide part to the guide mast, so that the quick-release guide device can be axially displaceably secured in the closed position by the interaction of the guide part and the closure part on the guide mast, in particular in the Z direction.

In the context of the present invention, fixing means that the guide part can no longer be removed from the guide mast in the fixed state, i.e. it is fixed radially and angularly (cylinder coordinates), but can still be moved along the longitudinal axis of the guide mast.

The inventive concept therefore involves specifying the guide direction (Z direction, longitudinal axis of the guide mast) by means of the guide part, whereby the guide part or the agitator mounted on it can be removed at right angles to the longitudinal axis of the guide branch, i.e. can be pushed onto the guide mast, so to speak. The bow-shaped locking part, in turn, serves to ultimately secure the guide part to the guide mast (positively locking) or to clamp it (by interacting with the guide part) so that the guide part or agitator can no longer be removed from the guide mast and can therefore only be moved along its longitudinal axis. Due to its bow shape, the locking part provides a mechanically stable holding option for the guide part, which in this respect combines the function of two separate retaining bolts in one element and, in conjunction with the insertion receptacle open on one side, also enables uncomplicated securing of the guide device by simply inserting it and, if necessary, locking it into the guide part.

The advantage of the invention over known solutions, in particular the aforementioned ones with fastening by means of two bolts, is that fastening is quick and easy by simply inserting the bow-shaped closure part into the guide part, so that the effort for assembly and disassembly of the guide device or the agitator on the guide mast is advantageously reduced. Furthermore, in particular for disassembly, it is not necessary to lower the fill level of the container in which the agitator is used, since no The lower bolt must be reached and the locking part is accessible early on. In other words, the agitator can advantageously be secured to and removed from the guide mast with essentially a single movement (inserting the locking part). This significantly reduces the time the agitator is suspended from the lifting cable and the guide device is subjected to stress, thus advantageously reducing wear and tear and the risk of damage. The agitator can also be secured to or removed from the guide mast while semi-submerged in the medium.

According to a preferred development, it is provided that in the closed position the displaceability of the quick-release guide device in a cross-sectional plane of the guide mast can be blocked by two opposite, sheet-metal-shaped guide sides of the guide part in a first cross-sectional direction, in particular the X-direction, and by the closure part and a sliding side of the guide part in a second cross-sectional direction extending in the cross-sectional plane and orthogonal to the first, in particular the Y-direction, wherein in the closed position the guide part, in particular the sliding side of the guide part, is arranged at least in regions on a first side surface of the guide mast and the closure part is arranged at least in regions on a second side surface opposite the first side surface and extending in a plane parallel to the first side surface, in particular resting thereon.

In simple terms, the guide part or its base wall rests on one side of the guide mast, and the locking part rests on the opposite side of the guide mast; the guide mast is essentially clamped between both parts. This is the case when the locking part is properly inserted into the insertion receptacle.

Advantageously, the agitator can be easily moved axially (in the Z direction) along the guide mast using the guide device.

Preferably, an agitator or the agitator can be arranged on a fastening area of the sliding side of the guide part.

According to a preferred development, it is provided that each of the guide sides has, on an edge side facing the closure part, at least one, in particular an upper and a lower, insertion receptacle, which are designed as slot-like insertion sections, wherein preferably at least the upper insertion section is angled, in particular angled by 90°.

The insertion receptacle is therefore arranged on each of the guide sides or is a component thereof and is designed in a slot-like manner. The insertion receptacle is preferably divided into two parts for each guide side or is formed from two partial receptacles, namely an upper and a lower one (in the Z direction), so that each guide side has two partial receptacles or an upper and a lower insertion receptacle, which are designed as slot-like insertion sections. Each insertion receptacle or each insertion section has an insertion direction or insertion axis, which is the direction of extension of the receptacle starting from the corresponding insertion opening. In the case of an angled course, the insertion direction also has an angled course or a change of direction, preferably from horizontal to vertical. The lower insertion receptacle is preferably a simple insertion slot and the upper insertion opening is an angled piercing slot.

This advantageously enables a positive fixation of the closure part, especially in the case of an angled course.

According to a preferred development, it is provided that an inner guide surface of the guide sides facing the guide mast comprises at least one, in particular at least one upper and one lower, sliding element, and that the sliding side comprises at least one lower and one upper sliding bolt, wherein each sliding bolt comprises a roller for friction-free rolling on the first side surface of the guide mast.

Preferably, the sliding elements and/or the roller are made of a comparatively soft material with a low coefficient of friction, particularly to prevent scratches. In particular, the roller is rotatably mounted relative to the sliding bolt. The sliding elements are preferably made of plastic, rubber, or a similar soft, sliding material. This advantageously enables comfortable and wear-reduced movement along the guide mast, since the friction reduction of the roller and the sliding elements reduces the force required for movement and the resistance.

According to a preferred development, it is provided that the guide part has a base-like, preferably circular disk-shaped, fastening area for the agitator, to which the agitator can be detachably fastened. This advantageously enables simple and safe installation of the agitator.

The fastening area is preferably formed on or in the plane of the sliding side, in particular arranged on an outer surface of the sliding side opposite the inner surface. The fastening area is therefore preferably part of the sliding side, or vice versa. Advantageously, the fastening area is thus easily accessible.

Preferably, the guide parts are attached at right angles to the mounting area. This further improves accessibility.

In particular, the mounting area extends further in a direction orthogonal to the axis of the guide mast than the sliding side and protrudes beyond the sliding side. This further improves accessibility and facilitates the assembly of the agitator.

Preferably, fastening means for the agitator are provided in the protruding area of the mounting area. These fastening means can be screws, bolts, locking elements, or similar force- and/or form-fitting means. A material-to-material fastening such as a welded joint is also conceivable. This makes fastening the agitator particularly secure and uncomplicated.

According to a preferred development, it is provided that the closure part has two frame elements arranged parallel to one another, in particular leg-shaped, and two sliding bolts extending at right angles thereto and connecting the frame elements, wherein each sliding bolt comprises a roller for friction-free rolling on the second side surface of the guide mast.

The frame elements, which can be designed, for example, as angled sheet metal legs, and the sliding bolts connecting the frame elements, create the bow-shaped closure element, which advantageously allows for easy and particularly convenient insertion into the guide element and secure fastening. The rollers of the closure element, similar to those of the guide element, enable comfortable and wear-reduced movement along the guide mast.

According to a preferred development, it is provided that each sliding bolt of the closure part has an insertion segment, in particular an insertion sleeve, at axially opposite end regions for tool-free insertion into the insertion receptacle of the guide part.

In particular, the (transverse) diameter of the sliding pins is smaller than that of the insertion sleeve. The insertion sleeve is preferably rotatable. The insertion segment or the insertion sleeve enables convenient and secure insertion and storage of the closure part in the guide part.

According to a preferred development, it is provided that the guide part and the closure part, in particular the upper corner regions of the guide sides facing the closure part and the upper end regions of the frame elements of the closure part, each have two insertion openings for a securing element, in particular a securing bolt, which are aligned in the closed position,

The locking element advantageously locks the locking part in the locked position, thus reliably preventing accidental release. The frame element is preferably an angled bracket plate, and the guide part has angled corners with the insertion opening. This prevents the locking element from interfering with the guide mechanism's running or sliding mechanism, making it easy to grasp and remove.

Preferably, in the service position, the insertion openings and the securing element are located above the liquid level of a medium to be stirred. The guide device has the appropriate design or geometry so that the insertion openings and the securing element can be arranged above the liquid level in the service position. This advantageously makes the securing element particularly easy and convenient to reach in order to release the closure part.

According to a preferred development, it is provided that the insertion openings are spaced further from the guide mast than the rollers of the closure part, and preferably the securing element can be locked in the insertion openings without tools.

This advantageously allows for particularly convenient insertion and removal of the securing element, as the rollers are not in the way and no tools are required for inserting or removing the securing element. In particular, the securing element can be secured in the insertion opening with a wing nut, a quick-release clamping device, or similar, so that it can be removed without tools. This essentially eliminates the risk of an otherwise required tool falling into the medium or becoming lost. becomes dirty. Any corrosion can also be counteracted.

The invention further relates to an agitator, in particular a submersible agitator, with a guide device that can be attached or is attached to the agitator for guiding the agitator along a guide mast. In the attached state, the agitator can be displaced along the guide mast by means of the guide device and can be locked in at least one definable operating position. The agitator is characterized in that the guide device is designed according to the invention as described above. This results in the advantages already mentioned in this regard.

The invention also relates to an arrangement comprising a guide mast and an agitator, in particular a submersible agitator, mounted axially displaceably on the guide mast by means of a guide device. The arrangement is characterized in that the agitator is designed according to the invention as described above. This results in the advantages already mentioned in this regard.

DRAWINGS

Further advantages will become apparent from the accompanying drawing description. The drawings illustrate exemplary embodiments of the invention. The drawings, the description, and the claims contain numerous features in combination. Those skilled in the art will also expediently consider the features individually and combine them into useful further combinations.

• 1 Eine vereinfachte perspektivische Darstellung einer vorteilhaften Anordnung mit einem mittels einer vorteilhaften Führungsvorrichtung an einem Führungsmast befestigtem Rührwerk,
• 2A und 2B jeweils eine perspektivische Detailansicht der Führungsvorrichtung, und
• 3A bis 3D jeweils die Anordnung zu verschiedenen Arretierungpositionen.

They show:

• 1 A simplified perspective view of an advantageous arrangement with an agitator attached to a guide mast by means of an advantageous guide device,
• 2A and 2B a perspective detailed view of the guide device, and
• 3A to 3D the arrangement for different locking positions.

In the figures, similar elements are numbered with the same reference numerals. The figures are merely examples and are not to be construed as limiting.

1 shows a simplified perspective view of an advantageous arrangement 10. In the present case, the arrangement 10 is formed from an agitator 12 and a guide mast 14, wherein the agitator 12 is mounted axially displaceably on the guide mast 14 by means of an advantageous guide device 16.

The agitator 12 is designed as a submersible agitator and has a stirring propeller 18 for stirring or mixing a medium, in particular liquid manure, a motor 22 for generating a drive force for the stirring propeller 18, and a gear 22 for transmitting the drive force generated by the motor 20 to the stirring propeller 18. In this case, the stirring propeller 18 is coupled to the motor 20 by means of the gear 22. Furthermore, the agitator 12 has a lifting cable connection element 24, by means of which a lifting cable (not shown here for reasons of clarity) can be fastened to the agitator 12 or connected to it for the guided raising and lowering of the agitator 12. By means of the lifting rope, a lifting force generated by means of a lifting device, in particular a winch, which is not shown here for reasons of clarity, can be transferred to the agitator 12, so that the latter can be raised and lowered in a controlled manner, in particular in conjunction with the acceleration due to gravity.

In order to enable a precisely guided lifting and lowering, the guide mast 14 and the guide device 16 are provided, wherein a cable (not shown) can move the guide device 16 with the agitator 12 along the guide mast 14. As already mentioned, the agitator 12 can be fastened to the guide mast 14 in an axially guided manner by means of the guide device 16 or in the 1 shown state, so that the lowering and raising direction of the agitator 12 is predetermined as the Z-direction by the longitudinal axis of the guide mast 14. The guide device 16 thus serves as a link between the agitator 12 and the guide mast 14, wherein the agitator 12 is attached to the guide mast 14 via the guide device 16 in an axially guideable manner and is axially displaceable in the Z-direction in the predetermined guide direction.

In the attached state, the agitator 12 can be moved along the guide mast 14 between an upper service area of the guide mast 14 and a lower operating area of the guide mast 14 by means of the guide device 16 in conjunction with the lifting cable. The guide device 16 is designed to be detachable or unlockable, so that the agitator 12 can be removed from the guide mast 14 as needed, for example for maintenance purposes, or can be reattached to the guide mast 14 for intended operation after maintenance or the like. In order to be able to remove the agitator 12 from the guide mast 14 particularly quickly and easily, the following is advantageously provided: that the guide device 16 is designed as a quick-release guide device 16.

2A and 2B In this regard, a perspective detailed view of the quick-release guide device 16 in an unlocked or released state ( 2A) and in a closed position (2B).

For the design as a quick-release guide device 16, the guide device 16 is advantageously designed in two parts. The quick-release guide device 16 has, as its first part, a guide part 26, which in this case is essentially U-shaped, and as its second part, a closure part 28, which is essentially bow-shaped.

The guide part 26 serves or is designed to at least partially specify the guide direction of the agitator 12 along the guide mast 14 and thus provides a guide function. The closure part 28, in turn, serves or is designed to fix the guide part 26 to the guide mast 14 in an axially displaceable manner.

For fixing, the guide part 26 has at least one insertion receptacle 30, which is open on one side, for the closure part 28, into which the closure part 28 can be inserted at least in sections in the 2B shown closure position can be inserted or plugged in. In the closure position, the quick-release guide device 16 can be fixed to the guide mast 14 by the interaction of the guide part 26 and the closure part 28 inserted into the insertion receptacle 30.

As particularly in 2A As can be clearly seen, the U-shaped guide part 26 in this case has two opposite, in this case sheet-like, guide sides 32, which are connected on one side via two sliding bolts 50 and a fastening area 34 in this case circular disk-shaped for fastening the agitator 12 to the guide part 26 or the quick-release device 16. The fastening area 34 is therefore arranged on an edge side of the guide sides 32 facing the fastening area 34. The guide sides 32 accordingly have edge sides 36 opposite these edge sides, facing or associated with the closure part 28, in or on which the insertion receptacle 30 is formed.

In the present case, the insertion receptacle 30 arranged in the region of the edge side 36 is divided into two parts and is designed in a slot-like manner. Each edge side 36 has a slot- or groove-shaped upper insertion section 38 and a slot- or groove-shaped lower insertion section 40. In the present case, as shown in particular in 2A As can be clearly seen, the upper insertion section 38 is angled or bent. As a result, when inserting the closure part into the upper insertion section 38, at least one change in the insertion direction, namely from horizontal to vertical, is necessary, so that complete insertion into the upper insertion section 38 takes place in two stages. Due to the angled design, the closure part 28 can be positively locked in the closed position on the guide part 26 or in the insertion receptacle 30, since the angled shape mechanically prevents it from falling out of the upper insertion section 38 in an uncontrolled manner when fully inserted.

The guide sides 32 have inner guide surfaces 42 facing the guide mast 14. The fastening area 34 also has a sliding side 44, which also faces or is assigned to the guide mast 14 and to which the guide sides 32 are oriented at right angles in the present case. The displaceability of the quick-release guide device 16 in a cross-sectional plane of the guide mast 14 can be blocked or limited by the inner guide surface 42, which faces or is assigned to the guide mast 14, and the sliding side 44. More precisely, the displaceability of the guide part 26 or the quick-release guide device 16 is limited by the inner guide surfaces 42 in the X direction and by the sliding side 44 in conjunction with the closure part 28 in the closed position in the Y direction, as shown in particular in 2B and 1 is clearly visible.

In the closed position, the guide part 26 thus rests at least partially on a first side surface of the guide mast 14 and the closure part 28 rests at least partially on a second side surface opposite this first side surface and extending in a plane parallel to the first side surface.

In order to enable a particularly simple and secure attachment of the agitator 12 to the quick-release guide device 16 or to its attachment area 34, a plurality of attachment means 46 are provided on the attachment area 34. The attachment means 46 can be bolts, screws, or the like. Furthermore, an externally arranged cable holder 48 is provided on at least one of the guide sides 32 in order to ensure a secure guidance of the agitator that does not interfere with its intended operation. 12 and/or the quick-release device 16 associated cables.

To reduce frictional forces occurring during axial displacement of the quick-release guide device 16 or the guide part 26 along the guide mast 14, the guide part 26 in this case has two rollers 52 arranged on or on one of the sliding pins 50 orthogonally connecting the guide sides 32, as well as a plurality of sliding elements 54 arranged on the inner guide surfaces 42. The rollers 52 and sliding elements 54 are formed in particular from a comparatively soft material with a low coefficient of friction, so that during axial displacement and the associated sliding along the guide mast 14, friction is advantageously reduced and thus any wear that may occur is effectively reduced. In particular, it can be provided that the rollers 52 are rotatably mounted with respect to the sliding pin 50, thus enabling particularly easy rolling.

As particularly in 2A As can be clearly seen, the closure part 28 has two frame elements 56 arranged parallel to one another, in this case leg-shaped, which are connected to one another via two sliding bolts 58 extending at right angles thereto. This forms the initially mentioned bow shape of the closure part 28. Each of the sliding bolts 58 has, at axially opposite end regions, an insertion segment 60, in this case designed as an insertion sleeve, which serves for tool-free insertion into the insertion receptacle 30 or the slot-like insertion sections 38, 40 forming the insertion receptacle 30.

As previously mentioned, to secure the guide part 26 to the guide mast 14, the closure part 28 is inserted into the insertion receptacle 30. In the present case, the closure part 28 is first inserted with its lower insertion segment 60 into the lower insertion section 40. Once this has been partially inserted, the upper insertion segments 60 are inserted horizontally into the upper insertion sections 38 until the corner created by the angled course is reached, so that a change in the insertion direction vertically or downwards is necessary. The insertion direction is then changed from horizontal to vertical, wherein the upper and lower insertion segments 60 are moved synchronously vertically within the upper or lower insertion sections 38, 40 until the lower stop, and the closure part 28 is thus fully inserted and in the closed position.

Due to the angled shape of the upper insertion sections 38, the closure part 28 is positively locked in the insertion receptacle 30 in the closed position, so that it cannot accidentally fall out of the insertion receptacle 30. To unlock or release from the closed position, the closure part 28 can be easily pulled out of the insertion receptacle 30 again by vertical and horizontal movements, thus enabling quick and convenient release of the quick-release guide device 16.

In the present case, it is provided that each of the sliding bolts 58 of the closure part 28, analogous to the sliding bolts 50 of the guide part 26, has a roller 62, in particular a rotatably mounted roller, for friction reduction, so that in the fixed state the quick-release guide device 16 can be axially displaced along the guide mast 14 with reduced friction.

In order to provide an additional means of securing the closure part 28 in the closed position, i.e. the locking of the closure part 28 on the guide part 26, the guide part 26 and the closure part 28 each have two insertion openings 64, which are aligned with one another in the closed position, for a securing element 66, as shown in particular in 2B is shown.

The insertion openings 64 are arranged or formed in the upper corner regions of the guide sides 32 facing the closure part 28 or in the upper end regions of the frame elements 56 of the closure part 28. The securing element 66 is designed as a securing bolt, which is secured in the securing position inserted into the insertion openings 64, preferably by means of nuts, clamping elements, or the like.

3A to 3D each show a side view of the assembly 10 at different times during a disassembly process in which the agitator 12 fastened to the guide mast 14 by means of the quick-release guide device 16 is removed from the guide mast 14 by releasing the closure part 28 from the guide part 26.

In the 3A In the state shown, the agitator 12 is fixed to the guide mast 14 and is thus secured to the guide mast 14 by means of the quick-release guide device 16, which is in the closed position. The closure part 28 is thus in the closed position, in which it is arranged in the insertion receptacle 30, positively locked, and additionally fixed by means of the securing element 66.

In this respect, the 3A In the state shown, the insertion segments 60 are inserted into the upper and lower insertion sections 38, 40, and the closure part 28 is securely locked or fixed in the closed position by the securing element 66. The agitator 12, in turn, is held by a lifting rope mounted on the lifting rope connecting element 24.

To remove the agitator 12 from the guide mast 14, it is pulled axially along the guide mast 14 into the service position using the lifting rope and the quick-release guide device 16. As soon as the quick-release guide device 16 is accessible to a technician carrying out the disassembly, 3B shown, the securing element 66 is released and pulled out of the insertion openings 64, so that the closure part 28 is now only positively locked in the insertion receptacle 30.

Following this, as in 3C It is shown that the bow-shaped closure part 28 is removed in its entirety by slight lifting, at least partially, from the insertion receptacle 30. More precisely, the upper insertion segments 60 are completely removed from the angled upper insertion section 38 by vertical and then horizontal movements, and the lower insertion segments 60 are partially displaced vertically within the lower insertion section 40 in the direction of the opening of the lower insertion section 40.

After the upper portion of the closure part 28 has been completely removed from the upper insertion section 38, the lower portion of the closure part 28 can also be completely removed from the lower insertion section 40 by vertical movement, as shown in 3D is shown. The locking position is thus released, so that the guide part 26 is no longer fixed to the guide mast 14 by the locking part 28.

As a result, the agitator 12 mounted on the guide part 26 can now be removed from the guide mast 14, in particular to carry out maintenance.

As soon as the agitator 12 is to resume its intended operation, it can be quickly and conveniently reattached to the guide mast 14 by inserting the closure part 28 into the insertion receptacle 30.

List of reference symbols

10

arrangement

12

agitator

14

Guide mast

16

Guide device, quick-release guide device

18

Stirring propeller

20

Motor

22

Gearbox

24

Guide rope connecting element

26

Guide part

28

closure part

30

Introductory shot

32

Guide page

34

Mounting area

36

Edge side

38

Upper insertion section

40

Lower insertion section

42

inner guide surface

44

Sliding side

46

Fasteners

48

Cable holder

50

Sliding bolt of the guide part

52

roller

54

Sliding elements

56

Frame elements

58

Sliding bolt of the locking part

60

Insert segment

62

roller

64

Insertion openings

66

securing element

QUOTES CONTAINED IN THE DESCRIPTION

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

Cited patent literature

• DE 195 17 901 C1 [0008]

Claims (11)

Guide device (10) for an agitator (12), in particular a submersible agitator for industrial, biogas or agricultural use, for axially guiding the agitator (12) along a guide mast (14) between an upper service area of the guide mast (14) and a lower operating area of the guide mast (14), wherein the agitator (12) can be fastened to the guide device (16) and the guide device (16) can be fixed axially guideably to the guide mast (14), characterized in that the guide device (16) is designed in two parts as a quick-release guide device (16) with a guide part (26) which can be assigned or is assigned to the agitator (12), preferably of substantially U-shaped design, for guiding the agitator (12) along the guide mast (14), and with a closure part (28) which can be assigned or is assigned to the guide part (26) and which is substantially bow-shaped, in particular square or rectangular, for axially displaceably fixing the Guide part (26) is formed on the guide mast (14), wherein the guide part (26) has at least one insertion receptacle (30) for the closure part (28), which insertion receptacle is open on one side and runs in particular at an angle in some regions, into which the closure part (28) can be inserted, in particular inserted, and locked, in particular in a form-fitting manner, at least in sections in a closed position for fixing the guide part (26) on the guide mast (14), so that the quick-release guide device (16) can be fixed in an axially displaceable manner in the closed position by the interaction of the guide part (26) and the closure part (28) on the guide mast (14), in particular in the Z direction. Guide device according to Claim 1 , characterized in that in the closed position, the displaceability of the quick-release guide device (16) in a cross-sectional plane of the guide mast (14) can be blocked by two opposite, sheet-metal-shaped guide sides (32) of the guide part (26) in a first cross-sectional direction, in particular the X-direction, and by the closure part (28) and a sliding side (44) of the guide part (26) in a second cross-sectional direction extending in the cross-sectional plane and orthogonal to the first, in particular the Y-direction, wherein in the closed position, the guide part (26), in particular the sliding side (44) of the guide part (26), is arranged at least in regions on a first side surface of the guide mast (14) and the closure part (28) is arranged at least in regions on a second side surface of the guide mast (14) opposite the first side surface and extending in a plane parallel to the first side surface, in particular resting thereon, preferably on a fastening area (34) of the sliding side (44) of the guide part (26) an agitator (12) can be arranged. Guide device according to Claim 2 , characterized in that each of the guide sides (32) has, on an edge side (36) facing the closure part (28), at least one, in particular an upper and a lower, insertion receptacle (30), which are designed as slot-like insertion sections (38, 40), wherein preferably at least the upper insertion section (38) is angled, in particular angled by 90°. Guide device according to one of the preceding Claims 2 or 3 , characterized in that an inner guide surface (42) of the guide sides (32) facing the guide mast (14) comprises at least one, in particular at least one upper and one lower, sliding element (54), and in that the sliding side (44) comprises at least one lower and one upper sliding bolt (50), each sliding bolt (50) comprising a roller (52) for friction-free rolling on the first side surface of the guide mast (14). Guide device according to one of the preceding Claims 2 until 4 , characterized in that the guide part (26) has a base-like, preferably circular disk-shaped, fastening area (34) for the agitator (12), to which the agitator (12) can be detachably fastened, wherein the fastening area (34) is preferably formed on or in the plane of the sliding side (44), in particular arranged on an outer surface of the sliding side (44) opposite the inner surface, wherein the guide sides (32) are preferably fastened at right angles to the fastening area (34), and wherein the fastening area (34) is preferably formed to be wider than the sliding side (44) in a direction orthogonal to the axis of the guide mast (14) and protrudes from the sliding side (44), and wherein fastening means (46) for the agitator (12) are provided in particular in the protruding area of the fastening area (34). Guide device according to one of the preceding claims, characterized in that the closure part (28) has two frame elements (56) arranged parallel to one another, in particular of leg-shaped design, and two sliding bolts (58) extending at right angles thereto and connecting the frame elements (56), each sliding bolt (58) comprising a roller (62) for friction-free rolling on the second side surface of the guide mast (14). Guide device according to Claim 6 , characterized in that each sliding bolt (58) has an insertion segment (60), in particular an insertion sleeve, at axially opposite end regions for tool-free insertion into the insertion receptacle (30) of the guide part (26). Guide device according to one of the preceding claims, characterized in that the guide part (26) and the closure part (28), in particular upper corner regions of the guide sides (32) facing the closure part (28) and upper end regions of the frame elements (56) of the closure part (28), each have two insertion openings (64) for a securing element (66), in particular securing bolts, which are aligned in the closed position, wherein preferably in the service position the insertion openings (64) and the securing element (66) are located above a liquid level of a medium to be stirred. Guide device according to Claim 8 , characterized in that the insertion openings (64) are spaced further from the guide mast (14) than the rollers (62) of the closure part (28), and preferably the securing element (66) can be locked in the insertion openings (64) without the use of tools. Agitator (12), in particular submersible agitator, with a guide device (16) which is fastenable or fastened to the agitator (12) for guiding the agitator (12) along a guide mast (14), wherein the agitator (12) in the fastened state is displaceable along the guide mast (14) by means of the guide device (16), characterized by a design of the guide device (16) according to one of the Claims 1 until 9 . Arrangement (10) comprising a guide mast (14) and an agitator (12), in particular a submersible agitator, mounted axially displaceably on the guide mast (14) by means of a guide device (16), characterized by a design of the agitator (12) according to Claim 10 .