EP1829606A1 - Mixer and mixing tool - Google Patents

Abstract

A building industry mixer for dry or semi-liquid aggregates has a mixer tool (25) rotating within a mixer container (1) that is supported by a lifting and positioning arm (11). The arm is directly coupled to the mixer tool which can be lifted from the mix operating presentation to a second position outside the container.

Description

The invention relates to a mixing device according to claim 1 and a mixing tool according to claim 23.

Mixing devices for mixing flowable or viscous mixtures or of powder or granular mixtures are used in particular in the construction industry. In such mixing devices, the mixing tool and / or the Mischgutbehälter can be driven.

Priority criteria in the use of such a mixing device are in addition to a high level of operational safety, ease of use and a homogeneous mixing of the mix in a short operating time.

The object of the invention is to provide a mixing device and a mixing tool for such a mixing device, which achieves a homogeneous mixing of the mix in a short operating time with a simple and reliable handling.

The object is solved by the features of patent claim 1 and of claim 23. Advantageous developments of the invention are disclosed in the subclaims.

According to the patent claim 1, the mixing device on a stationary stand, with which an actuating arm is adjustably connected, which carries the mixing tool. The actuating arm is adjustable between a working position, in which the mixing tool is arranged in the stirred container, and a removal position, in which the mixing tool is arranged outside of the mix container. The mixing tool is therefore adjusted by means of the actuating arm in a removal position as soon as the mixing process is completed. In the removal position of the mixing tool, the mixing container can be easily and safely removed from the mixing device.

In one embodiment, the mixing tool has a side wall scraper, which is guided along a side wall of the Mischgutbehälters and strips the mix from the container side wall. The side wall scraper can be held stationary on the actuator arm and project vertically into the mix container. For a functionality of the scraper a relative movement between the mix container and the scraper is required. As a result, the mixed material displaced due to centrifugal forces to the container sidewall can be returned to a mixing zone in the container center.

In addition to the side wall scraper, the mixing device may have a bottom scraper, which is guided along the container bottom of the Mischgutbehälters and strips Mischgut deposits from the container bottom and lifts into the mixing zone.

The sidewall and / or bottom scrapers may be ledges having a container side scraper edge and a scum edge for the mix. It is particularly advantageous if the side wall scraper is tilted against an inflow direction of the mixed material by an angle of attack from its vertical position. As a result, it is achieved that the mixed material scraped off the side wall scraper does not accumulate on the front in front of the scraper and over the Side edge of the mix container is pressed. Rather, this "sluggish" arranged scraper deflects the stripped mix in a direction opposite to a mixing zone in the center of the container. This is exacerbated when the side wall scraper is inclined with its trailing edge in the direction of flow.

It is particularly preferred if the side wall scraper is tilted by an angle of 5 ° to 15 °, preferably 12 ° from its vertical position. Thus, on the one hand, the angle of attack is sufficiently large to prevent the accumulating in front of the scraper mix accumulates up to the level of the container side edge. On the other hand, it is ensured that despite the larger construction volume of the tilted side wall scraper, the arrangement further stirring elements is not affected.

Despite the tilted over the pitch of the scraper arrangement is to ensure that the side wall scraper with its scraper blade in abutment or only slightly spaced from the side wall. For this purpose, the side wall scraper be bulged in an arcuate manner that it follows at least with its scraper edge of the side wall of the container. In this case, the tilted scraper may extend in the manner of a very steep helical curve along the side wall of the container.

From a manufacturing point of view, it is preferred if the side wall scraper carries the bottom scraper with its bottom end. It is particularly advantageous if the two scrapers are integrally formed of the same material and, for example, an angled metal strip.

Since there is virtually no mixing in the area of the container bottom center, the mixing tool can have at least one spirally curved bottom leaf exhibit. This pushes the mix from the container bottom center in the side region of the container bottom.

Manufacturing technology, it is advantageous if the bottom wing carries with its outside end of the soil scraper. In the event that the bottom scraper is also connected to the side wall scraper, this can be supported on the bottom side over the bottom wing. As a result, a particularly stable mounting of the two scrapers is achieved.

With regard to the mixing quality, it is advantageous if the bottom wing and / or the bottom scraper are arranged in the mixing material flow direction in front of the side wall scraper. In this way, before the two scrapers first mixed material is pushed by means of the bottom wing in the bottom edge region and there deflected first by the bottom scraper and then by the side wall scraper to the mixing zone.

To increase the mixing quality, the stirring tool can have at least one stirring blade. It is advantageous if the stirring blade is arranged in the mixing material flow direction behind the side wall scraper, which deflects edge-mounted mixed material to the mixing zone in the center of the container. The stirring blade can advantageously be a sharp-edged flat plate. It is advantageous if the mixing tool has two stirring blades, which can be spaced over an angle in the circumferential direction and arranged in different height positions. The two stirring blades can be aligned differently with their inflow surfaces.

For a simple assembly or disassembly of the mixing tool from the actuator arm, the mixing tool may have a central support column which carries stirring elements, such as the scraper or stirring blades. In this way, only the support column is to be connected to the actuating arm, while the thus carried by the support column stirring elements already in the correct position arrangement are located. The central support column of the mixing tool can be arranged coaxially with a rotational axis of the stirred container.

For a positionally correct arrangement of the side wall scraper on the container side wall, this can be connected via a support web to the support column. Thus, the container side wall over its entire height in abutment with the scraper, the support bar may be connected to a protruding from the agitator top end of the side wall scraper.

As mentioned above, the side wall scraper may be connected at its upper end to the support web of the support column. In addition, the sidewall wiper may also be connected to the support post at its lower end via the bottom wiper and the bottom wing. This results in a particularly stable, closed frame, which is guided along the entire bottom and side wall surface of the container. During the mixing process, this frame defines an annular zone into which the scrapers deflect the mix. In this annular zone protrudes the stirring blade, which exerts a shear force on the mix to break apart lumps of material.

The support column of the mixing tool described above can be attached to the actuator arm of the mixing device. In this case, the mixing tool protrudes stationary without drive in the mixing container. The mixed material container is placed on a, driven by a drive motor agitator of the mixing device and is thereby rotated during the mixing process.

Alternatively or additionally, the mixing tool, optionally via its central support column, be coupled to a drive shaft of an additional drive motor which drives the mixing tool.

Thus, the actuator arm is adjustable with its mixing tool in a simple manner from the working position to its removal position, the actuator arm can be as a pivoting arm in pivotal connection with the stand.

It is for a reliable operation of the pivot arm advantageous if the mixing device has a locking means which locks the pivot arm in its removal position. In this way, the pivot arm can be safely positioned in its removal position despite gravity.

The locking means may have a locking pin, which engages behind an associated locking edge in the removal position of the actuating arm. By engaging behind the locking edge of the locking pin blocks movement of the pivot arm from its removal position back into the working position.

When pivoting the actuator arm from its working position to its removal position, therefore, the locking pin first has to overcome the locking edge in order subsequently to engage behind the locking edge. The locking edge may be associated with a ramp-shaped stop edge. When swinging the actuator arm of the locking pin strikes against the stop edge, which presses the locking pin to overcome the locking edge from its rest position.

The locking pin is - after he has overcome the locking edge - retracted by means of detent springs in the direction of its rest position to engage behind the locking edge safely. Advantageously, therefore, the locking bolt automatically leave its rest position or be automatically returned to its rest position, without manually adjusting the locking pin in a unlocking or locking state.

According to one embodiment, the locking pin is provided on the pivot arm and the associated locking edge on the stand. As a result, assembly volume can be saved on the stand side.

Preferably, the locking edge is associated with a blocking edge. After the locking pin engages behind the locking edge in a corresponding pivoting movement of the pivot arm, the locking edge blocked with its locking edge pivotal movement of the pivot arm back to its removal position. The locking edge with its locking edge and / or its stop flank can be arranged on the upper side in the region of a pivot axis on the stand. It depends on the slope of the locking edge of the locking edge, whether the locking connection between the locking pin and the locking edge automatically, i. solely by a jerky pivoting movement of the swivel arm, from its removal position is solvable.

Preferably, the locking edge is a side edge of a recess of the stator. In this recess, the locking bolt engages after overcoming the locking edge.

To limit a pivoting movement of the pivot arm, the mixing device may have two corresponding pivot stops, which are provided on the stand and between which the pivot arm is pivotable. One of the pivot stops may be the above-mentioned recess of the stand for the locking bolt. In contrast, the other pivot stop may be a stator-side stop edge, on which the pivot arm is supported in its working position.

To overcome the ramp-shaped stop edge, it is advantageous if the locking pin is slidably guided in a slot. For example, in the case of a hollow-profile design of the swivel arm, the locking bolt can be made on both sides in the transverse direction from corresponding oblong holes of the swivel arm protrude and engage with its bolt ends respectively corresponding locking edges of the stand.

For a reliable latching operation, it is advantageous if each of the bolt ends of the locking bolt is assigned in each case a detent spring which presses the locking pin in its rest position.

To adjust the detent spring force, the detent springs are clamped between the detent pin and a transverse bar whose height position is adjustable by means of a set screw.

Preferably, the pivot arm is designed as a hollow profile part, which forms a housing for the above-described locking mechanism, such as the locking bolt with associated locking springs. In the same way, the stand can be a hollow profile part. Here, a U-profile-shaped cross-section for a stable construction of the mixing device is advantageous. In addition, a U-profile-shaped hollow profile of the stator limit a mounting space, are arranged in the functional elements of the mixing device protected from contamination. The U-profile-shaped stand may preferably be facing away from the mixing tool with its open side.

For an enlargement of the above-mentioned mounting space, it is advantageous if in the region of the functional elements of the mixing device, the wall height of the side walls of the U-shaped profile stand is increased. In this way, the functional elements, such as a handle for transporting the mixing device or a control box with controls, can be arranged protected in the mixing device. The Funküonselemente are arranged for easy operation at the top of the stand. In this case, it is advantageous if the side walls are drawn at their edges arcuately upwards, so that the wall height of the side walls is increased at the upper end of the stand.

Thus designed side walls of the stand are therefore modeled on a circular area sector, whose sector arc corresponds to the already mentioned stop flank.

The mixing device may have, in addition to the stand and the actuating arm, a base housing, on the upper side of which the mixed material container can be lowered. The base housing may additionally be attached to the stand, whereby the mixing device is designed to be compact overall. In the event that the mixing material container is rotationally actuated during the mixing process, a stirring basket can be arranged on the top side of the base housing in which the mixing material container can be inserted. The stirring basket can be driven via a drive motor arranged in the base housing.

For easy transport of the mixing device, it is advantageous if the base housing is supported on the front side via support wheels. On the back can be dispensed with additional support feet when the base housing over the stand, such as in a three-point bearing, supported. For the transport of the mixing device, it is favorable for the longest possible lever arm with respect to the mix container, when the handle of the mixing device is arranged in the upper end of the stand. For a transport, the mixing device is thus slightly tilted about the support wheels by means of the handle in order to lift the stand from the ground.

The agitating basket may preferably have entrainment means which can be brought into positive-locking connection with the mixing material container when the mixed-product container is inserted into the stirring basket. In particular, in the case of a stationarily held mixing tool, otherwise there would be the risk that, in spite of the rotating stirring basket, the rotational movement would not be transferred or only partially to the mixing material container. This is especially true for viscous mixed material.

The drivers can be formed as rib-shaped form-fitting elements on the inside edge of the mixing bowl. As counterstops, the container may have edge-side bottom ribs. When inserted into the mixing bowl, the container is placed with its bottom edge on the stirring basket driver. During the following mixing process, the stirring basket can only rotate relative to the container until the container ribs strike the edge-side stirring basket driver. The positive connection between the container and the mixing bowl is therefore automatically, without a correct position insertion of the container would be necessary in the mixing bowl. In contrast to a clamping connection or a frictional connection is also ensured that the insertion into and the removal of the container from the mixing bowl is not affected.

In the following, two embodiments of the invention will be described with reference to the attached figures.

Fig. 1

in einer perspektivischen Ansicht eine Mischvorrichtung gemäß dem ersten Ausführungsbeispiel;

Fig. 2 und 3

die Mischvorrichtung jeweils in Seitenansicht;

Fig. 4

in einer vergrößerten perspektivischen Ansicht die Einzelheit X aus der Fig. 1;

Fig. 5

in vergrößerter perspektivischer Teilansicht die Mischvorrichtung in ihrer Arbeitsposition und in ihrer Entnahmeposition;

Fig. 6

in einer perspektivischen Ansicht das Mischwerkzeug der Mischvorrichtung;

Fig. 7

das Mischwerkzeug in der Seitenansicht; und

Fig. 8

in einer vergrößerten Teilansicht die Mischvorrichtung gemäß dem zweiten Ausführungsbeispiel; und

Fig. 9

in einer perspektivischen Ansicht von unten den Mischgutbehälter.

Show it:

Fig. 1

in a perspective view of a mixing device according to the first embodiment;

FIGS. 2 and 3

the mixing device in each case in side view;

Fig. 4

in an enlarged perspective view of the detail X of FIG. 1;

Fig. 5

in an enlarged perspective partial view of the mixing device in its working position and in its removal position;

Fig. 6

in a perspective view of the mixing tool of the mixing device;

Fig. 7

the mixing tool in side view; and

Fig. 8

in an enlarged partial view of the mixing device according to the second embodiment; and

Fig. 9

in a perspective view from below the mix container.

In the Fig. 1, a mixing device is shown with a dashed lines indicated mixing material container 1, which is inserted into a mixing bowl 3 according to the first embodiment.

The stirring basket 3 is rotatably mounted on an upper side of a base housing 5 and via a drive shaft, not shown, in connection with a drive motor arranged in the base housing 5. At its front end, the mixing device is supported with its base housing 5 on both sides on support wheels 7. At its rear side, the base housing 5 is connected to a vertically arranged stand 9. The stand 9 is at its upper end via a pivot axis S with a pivot arm 11 in pivotal connection. The lower end of the stand 9 projects beyond the housing bottom of the base housing 5, so that it forms a three-point bearing for the mixing device as a support foot together with the two front-side support wheels 7.

Both the stator 9 and the pivot arm 11 are hollow profile parts made of steel with a U-shaped cross section. In this case, the stand 9 forms according to FIG. 1 with its two longitudinal side walls 13 a groove-shaped mounting space 15. This is designed to be open on the side facing away from the mix container 1 side. As is apparent from Figs. 1 to 3, the side walls 13 of the stator 9 are pulled at their edges arcuately upwards. It is thereby achieved that approximately at the level of the pivot axis S, the wall height of the side walls 13 is increased. The wall height of the two side walls 13 of the stator 9 therefore increases towards the upper end in an arcuate course steadily, so that correspondingly the mounting space 15 is enlarged for the functional elements of the mixing device in the region of the pivot axis S. The functional elements consist in particular of a handle 17, which is fastened to a transverse bar 19, and of a control box 21 with operating elements for the drive motor.

Between the two side walls 13 of the stator 9, the pivot arm 11 is rotatably supported via pivot pin 23 and adjustable between a horizontal working position shown in FIG. 2 and a shown in FIG. 3, almost vertical removal position. The pivot arm 11 also has a downwardly open U-profile and is formed in the side view of FIG. 2 in approximately L-shaped with two legs, one of which is articulated by means of the pivot pin 23 on the stand 9 and the other as a machine arm the mixing tool 25 carries. At its free end, the pivot arm 11 has a double handle 27, with which it can be pivoted from its working position shown in FIG. 2 into the removal position according to FIG. 3.

Thus, the pivot arm 11 is secured in its removal position shown in FIG. 3, the mixing device has a locking means which locks the pivot arm 11 in its removal position. For this purpose, according to the detail X from FIG. 4, a locking pin 29 extending in the direction of the pivot axis S is displaceably guided in two opposite oblong holes 31 of the pivot arm 11. The locking pin 29 is pressed by means of two locking springs 33 in its rest position shown in FIG. 4 against one side of the respective elongated hole 31.

The two detent springs 33 are shown in FIG. 4 coil springs, which are stretched between the locking pin 29 and a clamping angle 35. To set a detent spring force of the clamping angle 35 can be varied in its height position by means of a clamping screw 37.

A pivoting operation of the pivot lever 11 from its horizontal working position into the vertical removal position is explained with reference to FIG. 5. Accordingly, the pivot arm 11 is shown in solid lines in the horizontal working position in which it rests on a stop edge 39 of the stator 9. When folding the pivot arm 11 of the locking pin 29 comes shortly before reaching the removal position with arcuate stop edges 41 of the stator 9 in Appendix. In each of these stop flanks 41 a recess 43 is incorporated according to FIG. 5, in which the locking pin 29 is engaged in the removal position shown in dashed lines. A pivot arm 11 facing side edge 45 of the recess 43 serves as a locking edge, which engages behind the locking pin 29 in the removal position of the pivot arm 11.

To overcome this locking edge 45, the upper-side stop flanks 41 are formed arcuate. The locking pin 29 is therefore pressed shortly before reaching the removal position by means of the stop flanks 41 from its rest position. As a result, this overcomes the locking edge 45 and engages in the recess 43 a.

In the locked state, one of the pivot axis S facing side wall 47 of the recess 43 acts as a blocking edge. The locking edge 47 of the recess 43 holds the locking pin 29 securely in the recess 43rd

To solve the dashed line in Fig. 5 locking connection between the locking pin 29 and the recess 43, a jerky pivoting operation of the swing arm 11 is sufficient. In such a pivoting movement, the locking edge 47 presses the locking pin 29 against the detent spring force, whereby this can overcome the locking edge 45 automatically and the pivot arm 11 is pivotable in its horizontal working position. An additional manual actuation of the locking bolt 29 for its unlocking is therefore not required.

When swinging the swing arm 11 of the locking pin 29 beats as a wear-prone component when pivoting in the removal position against the stop edges first 41. Then it slides along the stop flanks 41 in the recesses 43. As a material for the locking pin 29 is therefore brass, especially cold solidified brass chosen, which can slide against the stop edge 41 of the steel made stator 9 wear.

Hereinafter, the mixing tool 25 attached to the pivot arm 11 will be described with reference to FIGS. 6 to 8. According to FIG. 6, the mixing tool 27 has a central support column 51 with a mounting plate 52 for attachment to the pivot arm 11. The support column 51 carries by means of a connecting web 53 a side wall scraper 55. The side wall scraper 55 is a metal strip which is guided along a side wall of the Mischgutbehälters 1 and strips the mix with its scraper edge 57 of the container side wall. As is apparent from Fig. 7, the side wall scraper 55 is tilted over an angle α of about 12 ° from its vertical position against a direction of flow shown in FIG. 6 I of the mix. This "sluggish" arrangement of the scraper 55 prevents accumulated in front of the side wall scraper 55 dammed mix in the direction of the container edge up and falls out of the container 1.

Despite the above-mentioned "sluggish" arrangement of the wiper 55, it must be ensured that the wiper edge 57 remains in contact with the container side wall. According to the invention, therefore, the wiping edge 57 does not extend linearly but is curved in an arcuate manner along the side wall.

The indicated in the figures container 1 is formed substantially cylindrical with a slightly radially outwardly inclined side wall. Accordingly, the wiping edge 57 of the wiper 55 follows in a helical curve the side wall of the container 1, the curve radius increases to the container edge.

At the same time the side wall scraper 55 is inclined with its trailing edge 58 by an inclination angle in the direction of flow I. This ensures that the stripped mixture can flow via an outflow edge 58 of the side wall scraper 55 into the container center.

The strip-shaped side wall scraper 55 is connected via a further connecting web 61 with a Bodenabstreifer 63 in connection. The Bodenabstreifer 63 is inclined as the side wall wiper 55 in the outflow direction I and guided along the container bottom. The Bodenabstreifer 63 thereby lifts deposits of the mix from the ground to the center of the container.

As is further apparent from FIG. 6, spirally curved bottom wings 65 are welded to the bottom end of the support column 51. The bottom wings 65 are guided along the container bottom and press the mix from the bottom center, in which no mixing can take place, in the bottom edge area. In the bottom edge region, the mix is then lifted by the bottom scraper 63 in the direction of an annular mixing zone in the center of the container.

In addition, two stirring blades 67, 69, which are fastened to the central support column 51 by means of stirring arms 68, protrude into this mixing zone. Each of the agitating blades 67, 69 is formed as a sharp-edged triangular plate, by means of which the mixture is subjected to shear forces to break up Mischgutclumpen. The two stirring blades 67 are arranged in different height positions and aligned with their inflow surfaces in different directions.

According to FIG. 6, the carrier column 51 together with the connecting web 53, the sluggishly arranged scraper 55, forms the bottom scraper 63 and the bottom wing 65 a closed frame. This limits the mixing process, an annular zone, in which the two scrapers 55 and 63 distract mix. Therefore, the frame carries the mixed material stored on the container side wall or on the container bottom back into the annular zone in the middle of the container 1, in which the two stirring blades 67, 69 mix the mixed material.

8, a mixing device according to the second embodiment of the invention is described in a perspective partial view from above. In Fig. 8, the mixing device is shown in its removal position. In contrast to the first embodiment, here the mixing tool 25 is driven by means of an additional drive motor 69. The drive motor 69 is mounted together with a container lid 71 and the side wall wiper 55 on the pivot arm 11 of the mixing device. Furthermore, in Fig. 8, the mixing bowl 3 can be seen, in which the mix container 1 is inserted and which is driven by means of a drive motor, not shown in the base housing 5.

To start the mixing process, a main switch of the control box 21 is to be pressed. In the event that when pressing the main switch of the swing arm 11 is still in its removal position, only the mixing bowl 3 is driven, while the drive motor 69 of the mixing tool 27 remains switched off. For safety reasons, the drive motor 69 of the mixing tool is switched on only at a pivot angle of about 20 ° before its horizontal working position. As a result, the swivel arm 11 is guided by the rotational movement of the mixing tool 25 in its final horizontal working position.

If, during the mixing process, the swivel arm 11 is tilted upwards out of its horizontal working position, then the drive motor 69 of the mixing tool 25 likewise switches off again automatically at the above-mentioned swivel angle of 20 °.

As is further apparent from FIGS. 2 and 3, the mixing bowl 3 is provided on the inside edge with rib-shaped drivers 73, on the upper edges of which the mixed product container 1 shown in FIG. 9 can be placed with its bottom edge 75. At the bottom edge 75 of the Mischgutbehälters 1 rib-shaped form-fitting elements 77 are formed.

When inserted into the mixing bowl 3, first the mixed material container 1 is placed with its bottom edge 75 on the upper edges of the rührkorbseitigen driver 73. A rotational movement of the mixing bowl 3 with respect to the mix container 1 is limited possible until the positive locking elements 77 of the container 1 strike against the driver 73 of the mixing bowl 3.

Claims (23)

Mixing device with a mixing tool (25) for mixing mixed material in a mixed material container (1), and a stand (9) with which an actuating arm (11) is adjustably connected, which carries the mixing tool (25) and which between a working position, in in that the mixing tool (25) is arranged in the mixed material container (1), and a removal position is adjustable, in which the mixing tool (25) is arranged outside the mixed material container (25). Mixing device according to claim 1, characterized in that the mixing tool (25) has a side wall scraper (55) which is guided along a side wall of the mix container (1) and strips the mix from the container side wall, and / or a bottom scraper (63 ), which is guided along the container bottom of the Mischgutbehälters (1) and raises the mix from the container bottom, wherein the side wall scraper (55) and / or the bottom scraper (63) preferably strips with a container-side scraper edge (57) and a opposite outflow edge (58) for the mix are. Mixing device according to claim 2, characterized in that the side wall scraper (55) against an inflow direction (I) is tilted by an angle (α) from its vertical position to deflect the mix to the container center, which angle of attack (α) in particular between the fifth ° - 15 ° and is preferably 12 °. Mixing device according to claim 3, characterized in that the tilted side wall scraper (55), the side wall of the container (1) following, bulged arcuately. Mixing device according to one of claims 2 to 4, characterized in that the side wall scraper (55) carries with its bottom end the bottom scraper (63), and in particular the side wall scraper (55) and bottom scraper (63) in one piece and are uniform in material, wherein the side wall scraper (55) and / or the Bodenabstreifer (63) are preferably inclined with its trailing edge (58) in the direction of flow (I). Mixing device according to one of the preceding claims, characterized in that the mixing tool (25) has at least one spirally curved bottom wing (65) which pushes the mix from the container bottom center in the side region of the container bottom, and / or the bottom wing (65) with its outside End with the bottom scraper (63) is in communication, and preferably the bottom wing (65) and / or the bottom scraper (63) in the direction of flow (I) of the mix in front of the side wall scraper (55) are arranged. Mixing device according to one of claims 2 to 6, characterized in that the bottom scraper (63) and the side wall scraper (55) are formed from an angled metal strip. Mixing device according to one of claims 2 to 7, characterized in that the mixing tool (25) with at least one stirring blade (67) is formed, which projects into the container center, and preferably the stirring blade (67) is a triangular plate, in particular the mixing tool (25) has a first stirring blade (67) and a second stirring blade (69) which is circumferentially spaced at an angle and are arranged in different height positions, and / or the two stirring blades (67, 69) are aligned differently with their inflow surfaces. Mixing device according to one of the preceding claims, characterized in that the mixing tool (25) has a central support column (51) carrying stirring elements, such as the scrapers (55, 63) or the stirring blades (67, 69), and / or the Sidewall scraper (55) via a web (53) to the support column (51) is connected, and / or the support column (51) of the mixing tool (25) is attached to the actuating arm (11) of the mixing device. Mixing device according to one of the preceding claims, characterized in that the mixed material container (1) can be switched off on a stirring basket (3) of the mixing device operated by a drive motor, and / or the mixing tool (25) is assigned a drive motor (69) which controls the mixing tool (25) drives. Mixing device according to one of the preceding claims, characterized in that a stirring basket (3) for inserting the Mischgutbehälters (1) at least one driver (73) which is positively connected to a corresponding, container-side counter-stop (77). Mixing device according to one of the preceding claims, characterized in that the actuating arm (11) is connected as a pivoting arm pivotally connected to the stator (9). Mixing device according to one of the preceding claims, characterized in that the mixing device has a latching means (29, 45) which locks the actuating arm (11) in its removal position, wherein the latching means has a latching pin (29) which engages in the removal position of the actuating arm (11) an associated latching edge (45), whereby a return movement of the actuating arm (11) is blocked in its working position. Mixing device according to claim 13, characterized in that the latching edge (45) is assigned a ramp-shaped stop flank (41) which presses the latching pin (29) out of its rest position when the actuating arm (11) moves into its working position, and / or the latching bolt ( 29) is pressed by means of at least one spring (33) in its rest position, wherein preferably the locking pin (29) on the actuating arm (11) and the locking edge (45) on the stand (9) are provided. Mixing device according to one of claims 13 or 14, characterized in that the latching edge (45) is associated with a blocking edge (47) which holds the actuating arm (11) with its locking pin (29) in the removal position, wherein preferably the latching edge (45). with their blocking edge (47) and their stop flank (41) are arranged on the upper side on the stand (9). Mixing device according to one of claims 14 or 15, characterized in that the latching means (45, 29) provides a releasable latching connection, which is automatically releasable by a jerky pivoting operation of the actuating arm (11) from its removal position. Mixing device according to one of claims 14 to 16, characterized in that the latching edge (45) is a side edge of a recess (43) of the stator (9), and / or the latching pin (29) in a slot (31) is displaceably guided, and / or the locking bolt (29) in a transverse direction on both sides of the actuating arm (11) protrudes and in the removal position engages behind the associated locking edges (45) with its bolt ends. Mixing device according to claim 17, characterized in that each of the bolt ends of the locking bolt (29) is assigned in each case a detent spring (33), and / or the two detent springs (33) are clamped between the detent pin (29) and a transverse bar (35), which is attached via an adjusting screw (37) on the actuating arm (11), wherein preferably the actuating arm (11) is a hollow profile part, which serves as a housing for the locking means, such as the locking pin (29) with associated locking springs (33). Mixing device according to one of the preceding claims, characterized in that the stand (9) is a hollow profile part, in particular with a U-profile-shaped cross section, and / or the stand (9) facing away from the mixing tool (25) mounting space (15), in the functional elements of the mixing device are arranged, and / or in the region of the functional elements of the mixing device, the wall height of the side walls (13) of the U-shaped stand (9) is increased, preferably wherein the side walls (13) of the stator (9) at their edges arcuate pulled upwards. Mixing device according to one of claims 18 or 19, characterized in that in the mounting space (15) an electrical control box (21) with controls and / or a handle (17) is arranged for tilting the mixing device. Mixing device according to one of the preceding claims, characterized in that the mixing device has a base housing (5), on the upper side of which the mixed material container (1) can be lowered, and / or a drive motor for a stirring basket (3) is arranged in the base housing (5), in which the mix container (1) can be used, and / or the base housing (5) is supported at the front via support wheels (7) and at the rear via the upright (9) in a three-point bearing. Mixing device according to one of the preceding claims 10 to 21, characterized in that on actuation of a main switch with hochgeschwenktem actuating arm (11) of the drive motor of the mixing bowl (3) is turned on while the drive motor of the mixing tool (25) remains switched off, and / or the drive motor of the mixing tool (25) turns on only when pivoting the actuating arm (11) in its horizontal working position, preferably at an angle of about 20 ° before reaching the working position. Mixing tool for a mixing device according to one of the preceding claims.

Images