DE29724902U1 - Mixer for small-scale application - where mixing is carried out under airtight conditions and in which the mixing blades can be positioned, and held, in any desired location. - Google Patents

Abstract

Mixing is carried under air-tight conditions, in order to prevent contamination of pharmaceutical products, or for materials withdrawn intermittently which could be affected by contact with air. The mixing blades can be held in any location, normally a mixing and a rest position, in order to hold them in constant readiness. The base of the container, in the form of a piston, can be moved upwards to force the product out a dispensing opening in the lid whilst still being just below the mixing blade. - A vane-type mixing blade is used. Vanes may be displaced alternately above and below the general rotation plane. The vanes could be spirals whose ends contact the container walls elastically. About half the subsidiary claims describe variations of the mixer blade assemblies and may be considered as independent claims.

Description

The The invention relates to a device for stirring or Preparation of mixtures o. The like. In a stirred vessel with a through a lid and a bottom lockable circular cylindrical Interior and one constantly enclosed in the mixing vessel agitator, and a passable through a closable central passage, with an electric motor in operative connection to the stirring rod Driving the stirring tool, which with closed execution solvable sitting in a rest position and during the mixing operation rotatably with the inserted into the mixing vessel drive end of the stir bar is in drive connection.

Known has become the US Pat. No. 4,735,509, which is directed to a dispenser tube for potting cement refers. In the dispenser tube is a cartridge with a Plastic bags, in which the components of the cement, namely a cement paste and a catalyst, separated by a partition are. The bag is tied at both ends.

In the dispenser tube is a mixing arrangement, namely a Agitator. The tube closes forward through a dispensing nozzle and moved backwards by a piston-like inside the tube Ground off.

The Blending tool has a central slot in which the drive end a stir bar that fits through the nozzle 16 introduced becomes. The stir bar is to an electric motor or to an electric drill connected the stirring tool sets in motion. If you move the stirrer in the longitudinal direction of the tube, ruptures the stirring tool the plastic cover and mix the ingredients of the plastic wrapper separately components of the cement stored separately from each other. When the stirring tool at the bottom end of the tube reached, the stir bar removed and the arrangement inserted into a device by the piston in the tube is pressed in, so that the finished cement, but also the shredded Plastic sheath exit through the discharge nozzle can.

These Device is not just for one-time use, but seems to be suitable after only for the preparation of potting cement from separately stored components.

It is no provision for it to prevent air from entering the mixing process. Besides that is the mixing process effected by the known device is not suitable, for example, ointments, mixtures, suspensions or emulsions u. Like. Produce for medical or cosmetic applications.

Also the known device is not suitable, for. B. long-stored, Occasional colors o. The like. In appropriate containers again to be used or spreadable. In the known Device remains the stirring tool after mixing the cement components in its lower position sitting on the piston-like movable floor. It may be from this Position will not be reactivated.

the across from The invention is based on the object, a device according to the aforementioned Form such a way that the remaining mixing vessel in the mixing can be used again at any time.

These Task is inventively characterized solved, that the dimensions of the mixing vessel, the stirring tool and the drive end of the stir bar are coordinated so that the stirring tool during insertion of the stirring rod in the mixing vessel from the Clamping in the rest position solvable and on his return from the Rührgefäß again can be clamped in its rest position.

The Device according to the invention is further constructed so that the mixing of the components takes place under exclusion of air. Thereby will prevent that during of the mixing process, airborne germs penetrate into the mix.

The Stirring vessels can be practical have any size. The invention leaves in connection with smaller mixing vessels, but also connection with Mixing vessels, the For example, include color, use. Further developments of Invention can be found in the dependent claims.

According to claim 2 shows the mixer - no matter which kind - to Recording the drive end of the stirring rod a central drive port on, in the rest position of the stirring tool with clamping fit in the central passage for the stirring rod stuck.

The Connection between the drive end of the stirring rod and the stirring tool Can be made by a clamp connection, but also by a clip connection become.

According to claim 4, a so-called. Steep thread can also be used. The mixing vessels according to the invention are characterized in claims 5 to 9. The stirred vessels may have a lid which is integral with the shell of the Rührgefä It is connected. The bottom is then designed as a movable piston in the mixing vessel. Both the lid firmly connected to the mixing vessel and the piston-like bottom may have central passages for the stirring rod.

When Lid can also be used a screw cap, which is the central execution for the whisk having. The rest position of the stirring tool Depending on whether the central feedthrough is located in the lid or in the bottom is, immediately below the lid or immediately above of the soil.

The agitator has a central passage through which the contents of the mixing vessel through the central implementation or can be expelled by a special material outlet, in which the piston-like bottom is pressed into the mixing vessel.

The central implementation, independently Whether it is placed on the lid or on the floor can be done with applicators be connected, by both the contents of the mixing vessel, for example as a skin cream, applied to the sensitive area of the skin can be. But without being able to change anything at the core of the invention through certain applicators also tubes through the central passages or through the outlet openings filled become.

According to claim 10, the mixing vessel with a vertically reciprocable mount be connected to the for example about a guide slot is in communication with the device and this mechanically in vertical direction can be moved back and forth. The back and forth Movable holder can be on the mixing vessel itself, but also on the central execution arranged the mixing vessel become.

According to claim 12, the mixing vessel with additional closable openings be provided.

From Advantage is when as a stirring tool used a paddle stirrer becomes. The inner areas of the impellers sit on a hub or on a drive port and are sickle-shaped to it curved towards the end regions. The cross sections of the impellers can be rectangular, but also streamlined be.

By those in the claims 17 to 19 marked measures, in particular, in that the agitating blades successively may be inclined differently, Is it possible, to achieve intensive mixing of the mixture components. This mixing is still promoted by that the mixing vessel during the stirring process in the vertical direction can be moved back and forth. The end areas the agitators are under Friction pressure on the inner wall of the mixing vessel on. Also the front and rear edges of the stirring blades lie in their upper and lower end positions on the inner surfaces of the Cover or of the soil, so that no mix the inner walls of the Fix the mixing vessel can.

According to claim 24, the paddle stirrer is considered relative formed flat disc. The paddle stirrer can in particular embodiments also firmly with the stir bar be connected.

Of the constructive structure of the advantage used Flügelrührers is in the claims 26 to 28 marked.

A Special form of the Flügelrührers is claimed in claim 29. By such a paddle stirrer can - depending on viscosity of the mixed material - advantageous Mixtures be brought about.

embodiments The invention will be explained below with reference to the drawing.

It shows

1 a schematic side view of the device,

2 a cross section through a first mixing vessel,

2a a design detail,

3 a cross section through a second mixing vessel,

4 a design detail,

5 a cross section through a further embodiment of a mixing vessel,

6 a cross section through another embodiment of a mixing vessel,

7 a cross section through a further embodiment of a mixing vessel,

8th a design detail,

8a schematically a coarse thread for connection between a stir bar and a stirring tool,

9 the top view of a paddle stirrer,

10 a cross section along the line X / X in 9 .

11 the side view of the cross section of a development of the Flügelrührers and

12 a second embodiment of a Flügelrührers.

1 schematically shows a device 1 , with a stand 2 and an electric motor 3 to the over a stir bar 4 inside a mixing vessel 5 a stirring tool 6 connected. The stirring vessel 5 can have a holder 7 with the device 1 in operative connection. The holder 7 can on the jacket of the mixing vessel 5 , but also at the central passage for the stir bar 4 be arranged.

The holder 7 can in a guide slot 8th in the direction of the double arrow in the vertical direction are moved back and forth.

2 shows the cross section of a first embodiment of a stirring vessel 11 with a circular cylindrical shell, the bottom of a standing edge 13 ends. The circular cylindrical shell 12 is integral with a lid 14 connected, which has a central lid outlet 15 having. This consists of a threaded neck 16 that is integral with the lid 14 is connected and with an external thread 17 is provided. On this external thread 17 can a threaded plug 18 be screwed to close the central lid exclusion. The central lid outlet 15 However, it can also be from a screw cap 20 ( 2a ) are closed. The threads 16 respectively. 17 and the stopper 18 or the screw cap 20 are dimensioned so that a sufficiently airtight completion of the mixing vessel is ensured.

The stirring vessel 11 has a piston-like bottom 21 on top, with an annular elastic sidewall 22 and a lower edge 23 provided a tight seal of the piston-like bottom 21 within the mixing vessel 11 sure.

In the lower part is a clamping ring 24 (see. 4 ) provided by the stroke of the piston 21 is limited to the bottom.

The piston-like soil 21 has a central implementation 25 with a sealing guide 26 for the stir bar 4 , The inner diameter 27 the central passage is sized so that the stir bar 4 tight within the central passageway 25 can rotate.

The central implementation 25 has an external thread 28 , In the illustrated embodiment, a screw cap 29 screwed on with inner plug.

The schematically indicated stirring tool 30 has a drive connection 31 on, in which a central passage 32 is provided, through which the mix from the mixing vessel 11 is discharged when the piston-like bottom 21 is pushed upwards.

The stirring tool 30 is in his resting position 34 in the immediate vicinity above the piston-like soil 21 shown.

After removal of the screw cap 29 can the stir bar 4 be introduced and connected to the drive port 31 of the stirring tool 30 connect in a way explained later. The compound is made that from the stir bar 4 not just a drive rotation on the stirring tool 30 can be exercised, but also a reciprocation in the direction of the double arrow 9 in 1 ,

The piston bottom 21 has a secondary passage with plugs 36 on, through which optionally material can be entered into the mix.

Without altering anything at the core of the invention, secondary connections can be made in the manner of the secondary connection 35 also in the circular cylindrical shell wall 12 but also in the lid 14 of the mixing vessel 5 to be ordered. This also applies to all further described embodiments of the invention.

3 schematically shows a stirring vessel 38 , with a circular cylindrical shell 39 that goes down through a stroke limiting ring 40 closes, at the same time as a stand ring for the mixing vessel 38 Use finds.

The stirring vessel 38 is with a screw cap 41 connected, whose inner wall with 41a is designated. A central implementation 42 with an external thread 43 is in the screw cap 41 arranged. The central implementation 42 has a sealing guide 44 for the stir bar 4 on. Also the mixing vessel 38 is with a piston-like bottom 45 equipped, which can be moved upwards in the direction of the arrow. The piston-like soil 45 has an annular elastic side wall 46 on. The schematically indicated stirring tool 47 is in a manner explained later with the drive end of the stirring rod 4 connected. The stirring vessel 49 according to 5 is integral with a lid 14 connected, in which a central implementation 50 is arranged. The stirring tool 13 is in its immediately below the lid 14 disposed rest position 51 shown. It has a central passage 32 on, through which the mix from the piston 21 can be discharged. A mixing vessel 52 to 6 has an integral with the cylindrical shell wall 12 connected lid 14 on. The bottom is as a piston 21 formed with a central passage for the stirring rod. The stirring tool 30 has a drive trim 31 in which the drive end of the stir bar 4 is clamped. The stirring tool 30 is in his resting position 52 immediately above the piston-like bottom 21 shown.

A mixing vessel 54 according to 7 has a screw cap 41 and has a piston-like bottom 45 , next to which the stirring tool 47 is in its rest position. The central implementation 55 is ground 45 arranged.

8th schematically shows parts of the screw cap 41 with an inner wall 41a and a central implementation 42 that has an external thread 43 for a screw cap o. The like. Has.

The inner diameter 27 the central bushing is on the outside diameter 33 the drive end 56 of the stir bar and the outer diameter 33 the drive socket 31 adjusted so that a dense stirring operation is guaranteed.

The stirring tool 47 has a drive connection 31 in which by means of a detachable connection 85 the drive end 56 the stirring bar is shown.

The drive connection 31 is by means of a clip connection 57 in the central execution 42 clamped. This clip connection has at the bottom of the central passage 42 a torus 58 which has an annular detent groove 59 in the drive connection 31 opposite. As a result, a fixed clamping seat of the stirring tool 47 secured in its rest position.

8a shows a releasable connection between the drive end 56 . 87 and the power socket 31 a stirring tool 47 , The parts of the steep thread 37 respectively. 37a inside the drive nozzle and in the outer wall of the drive end 56 . 87 of the stir bar 4 . 86 allow a relatively secure connection between the stir bar 4 . 86 and the stirring tool 47 during rotation of the stirring bar, which can be easily released after completion of the rotation by an oppositely directed rotational movement.

The Invention can cooperate with any suitable stirring tool, which can be set in rest positions within the mixing vessel and which with the drive end of the stirring rod for the duration of the stirring operation can make a secure connection.

9 shows the top view of a preferred embodiment of a stirring tool. It is a paddle stirrer 61 with agitators 62 whose inner areas 64 sickle-shaped from a hub 65 extend outwards. Instead of the hub 65 can, without changing anything at the core of the invention, also a drive port 31 be provided.

The end areas 63 the agitator wing 62 are under friction at the schematically indicated coat 88 a stirred vessel. Between the impellers are intermediate pieces 80 provided, leading to a connecting ring 82 are joined together. The connecting ring 82 is in the distance 83 from the end areas 63 the agitator wing 62 away.

10 schematically shows a section along the line XIX in 9 , The stir bar 86 is with its lower end 87 stuck with the as a flat disc 84 trained wing stirrer 61 to 9 connected. The intermediate pieces 80 are indicated in cross section. It is clear in 10 recognizable that the end areas 63 the agitator wing 62 on the inner wall 89 of the coat 88 issue. It should be noted that 10 schematically a section through the paddle stirrer 61 to 9 represents. It is assumed that the cutting line is guided along the stirring blades.

11 schematically shows a development of the scope of the Flügelrührers 9 , The stirring blades are shown in section. With 77 an impeller with a rectangular cross section is shown The direction of rotation of the schematically illustrated Flügelrührers is indicated by the arrow 71 indicated. The impellers with streamlined cross sections are preferably used.

One distinguishes between stirring blades of a direction of inclination, whose leading upper edges 66 in an upper outer level 73 lie. The trailing lower edges 67 this agitator are in a lower inner level 76 , The inclined in other direction agitator lie with their previous lower edges 68 in a lower outer level 74 and with their trailing upper edges 69 in an upper inner level 76 , The stirring blades are at the angle of inclination 70 respectively. 72 inclined to the horizontal.

At the impeller with rectangular cross-section 77 is a sharp edge 79 shown, the mix of the inner wall 91 of the soil 19 scrapes. The other stirring blades can also be provided with such a sharp edge. Often, however, it is sufficient that only with the inner wall 91 of the Bo dens 90 or the inner wall 93 of the lid 92 Frictional contact exists. The levels 73 and 75 and the corresponding other planes are at a distance 81 from each other, which depends on the mix to be processed.

As well The angles of inclination will be according to the mix to be processed judge.

12 Finally, a plan view through another embodiment of a paddle stirrer consisting of an outer paddle stirrer 94 and an inner paddle stirrer 97 consists. The outer paddle stirrer has long paddles 95 on. In 12 are two long stirring blades 95 shown. There may also be several outer stirring blades 95 be used. The end areas 96 this long agitator 95 are under friction pressure on the inner wall of the mixing vessel. At a distance 101 from the end areas 96 inside the short stirring blades end 98 of the inner grand piano stirrer. As the 12 There are several short stirring blades 98 intended. Your ends 99 are by means of a ring 100 connected with each other.

Through the paddle stirrers 61 respectively. 94 and 97 not only ensures optimal mixing of the mix, but they also occupy only a small space within the mixing vessel. All paddle stirrers can be fixed in their rest positions. They can be used again at any time in order to work up or mix the mix within the mixing bowls from scratch.

1

contraption

2

stand

3

electric motor

4

whisk

5

mixing vessel

6

agitator

7

bracket

8th

guide slot

9

double arrow 10

11

mixing vessel

12

circular cylindrical jacket

13

stand edge

14

With the coat in one piece cover

15

centrally Deckelauslass

16

threaded extension

17

external thread

18

Plug 19

20

screw cap

21

piston-like ground

22

annular elastic sidewall

23

lower edge

24

clamping ring for stroke limitation

25

central execution

26

sealing guide of the stir bar

27

Inner diameter

28

external thread

29

screw cap with inner stopper

30

agitator

31

drive bush

32

centrally passage

33

outer diameter

34

rest position

35

Besides passage

36

Plug

37

coarse thread 37a coarse thread

38

mixing vessel

39

circular cylindrical jacket

40

Hubbegrenzungsring

41

screw 41a inside wound

42

central execution

43

external thread

44

sealing guide for stir bar

45

piston-like ground

46

annular elastic sidewall

47

agitator 48

49

Rührgefäßg

50

central execution

51

rest position

52

mixing vessel

53

rest position

54

mixing vessel

55

central execution

56

drive send the stirring rod

57

Clip connection

58

torus

59

annular detent groove 60

61

paddle

62

impellers

63

end

64

internal Area

65

hub

66

previous upper edge

67

trailing lower edge

68

previous lower edge

69

nachgehende upper edge

70

tilt angle

71

direction of rotation

72

tilt angle

73

upper outer level

74

lower outer level

75

upper inner level

76

lower inner level

77

rectangular cross-section

78

streamlined cross-section

79

sharp edge

80

connecting piece

81

distance

82

connecting ring

83

distance

84

area disc

85

Detachable connection

86

whisk

87

lower The End

88

coat of the mixing vessel

89

inner wall

90

ground

91

inner wall

92

cover

93

inner wall

94

outer paddle stirrer

95

longer impellers

96

end

97

internal paddle

98

short impellers

99

Endel

100

ring

101

distance

Claims (46)

Device for stirring or producing mixtures o. The like. In a stirred vessel with a closed by a lid and a bottom circular-cylindrical interior and a permanently enclosed in the mixing vessel stirring, and a passable through a closable central passage, with an electric motor in operative connection standing stirring rod for driving the stirring tool, which sits in a closed position releasably in a rest position and rotatably during the stirring operation with the introduced into the mixing vessel drive end of the stirring rod is in drive connection, characterized in that the dimensions of the mixing vessel ( 5 . 11 . 38 . 49 . 52 . 54 ), the stirring tool ( 6 . 30 . 47 . 61 . 94 . 97 ) and the drive end ( 56 . 87 ) of the stir bar ( 4 . 86 ) are coordinated so that the stirring tool when inserting the stirring rod in the mixing vessel from the clamp in the rest position releasably and in its return from the mixing vessel is clamped back into its rest position. Apparatus according to claim 1, characterized in that the stirring tool ( 39 . 47 . 61 . 94 . 97 ) for receiving the drive end ( 56 . 87 ) of the stir bar ( 4 . 86 ) a central drive connection ( 31 ), which in the rest position of the stirring tool ( 30 . 47 . 61 . 94 . 97 ) is seated in the central passage with a press fit. Device according to claim 2, characterized by a clip connection ( 57 ) between the drive port ( 31 ) and the central implementation. Device according to one or more of claims 1 to 3, characterized in that the drive end ( 56 . 87 ) of the stir bar ( 4 . 86 ) and the inner casing of the drive nozzle ( 31 ) or the hub ( 65 ) Components of a coarse thread ( 37 . 37a ), which is due to the rotation of the stirring rod ( 4 . 86 ) and that after the return of the stirrer ( 47 ) to its rest position ( 34 . 51 . 52 ) by counter-rotation of the hub ( 65 ) or the drive connection ( 31 ) is removable. Device according to one or more of the preceding claims, characterized in that the lid ( 14 ) integral part of the mixing vessel ( 49 ) and the central implementation ( 50 ), that the rest position ( 51 ) of the stirring tool ( 30 ) immediately below the lid ( 14 ), and that the ground ( 21 ) of the mixing vessel ( 49 ) as in the mixing vessel displaceable piston ( 22 . 23 ) is trained. Device according to one or more of claims 1 to 4, characterized in that the lid ( 14 ) integral part of the mixing vessel ( 11 ) is that the ground ( 21 ) than in the mixing vessel ( 11 ) displaceable piston ( 22 . 23 ) and with central implementation ( 25 ), and that the rest position ( 34 ) of the stirring tool ( 30 ) immediately above the ground ( 21 ) lies. Device according to one or more of claims 1 to 4, characterized in that the lid ( 14 ) integral part of the mixing vessel ( 11 ) and with a closable material outlet ( 15 ) is provided that the soil than in the mixing vessel ( 11 ) displaceable piston ( 21 ) and with the central implementation ( 25 ), and that the rest position ( 34 ) of the stirring tool ( 30 ) immediately above the ground ( 21 ) lies. Device according to one or more of claims 1 to 4, characterized in that the lid for the mixing vessel ( 38 ) Screw cap ( 41 ), and a central implementation ( 42 ), and that the ground ( 45 ) than in the mixing vessel ( 38 ) displaceable piston is formed, and that the rest position ( 52 ) of the stirring tool ( 30 ) immediately below the lid ( 41 ) lies. Device according to claims 1 to 4, characterized in that the lid for the mixing vessel ( 54 ) a screw cap ( 41 ) is that the soil than in the mixing vessel ( 54 ) displaceable piston ( 45 ) and with a central implementation ( 55 ), and that the rest position ( 53 ) of the stirring tool ( 47 ) immediately above the ground ( 45 ) lies. Device according to one or more of the preceding claims, characterized in that the mixing vessel ( 5 . 11 . 38 . 49 . 52 . 54 ) with a vertical ( 9 ) reciprocating mount ( 7 ) is connectable. Apparatus according to claim 15, characterized in that the outer jacket of the central passage ( 15 . 25 . 42 . 50 . 55 ) with the vertical ( 9 ) movable bracket ( 7 ) connected is. Device according to one or more of the preceding claims, characterized in that the lid ( 14 . 41 ) and / or in the ground ( 21 . 45 ) or in the wall ( 12 . 39 ) of the mixing vessel ( 5 . 11 . 38 . 49 . 52 . 54 ) except the central implementation ( 15 . 25 . 42 . 50 . 55 ) for the stir bar ( 4 . 56 . 87 ) at least one further closable opening ( 35 . 36 ) is provided. Device according to one or more of the preceding claims 1 to 12, characterized in that the stirring tool a Flügelrührer ( 61 ). Blade stirrer according to claim 13, characterized in that the inner regions ( 64 ) the impeller ( 62 . 95 . 97 ) on a hub ( 65 ) or sitting on a drive connection, and therefore sickle-shaped to the end regions ( 63 . 96 ) are formed out. Wing agitator according to claims 13 and 14, characterized in that the cross sections ( 77 ) the stirring fin ( 62 . 95 . 98 ) are rectangular. Wing agitator according to claims 13 and 14, characterized in that the cross sections ( 78 ) the impeller ( 62 . 95 . 98 ) are streamlined. Wing agitator according to claims 13 to 16, characterized in that the stirring blades ( 62 . 95 . 98 ) in the direction of rotation ( 71 ) are alternately inclined. Wing agitator according to claims 13 to 17, characterized in that in the direction of rotation ( 71 ) preceding upper and lower edges ( 66 . 68 ) rectified impeller ( 62 respectively. 98 ) each outer upper or lower levels ( 73 . 74 ) lie. Wing agitator according to claims 13 to 18, characterized in that in the direction of rotation ( 71 ) subsequent upper and lower edges ( 67 . 69 ) rectified impeller ( 62 respectively. 98 ) in inner upper and lower levels ( 75 . 76 ), which are at a distance ( 81 ) to the adjacent outer level ( 73 . 74 ) are arranged. Blade stirrer according to one or more of claims 13 to 19, characterized in that that of the hub ( 65 ) or from the drive connection sickle-shaped outgoing stirring blades ( 62 ) of the paddle stirrer ( 61 ) are designed so elastically that their end regions ( 61 ) abut under friction pressure on the inner wall of the mixing vessel and thereby the vane stirrer ( 61 ) Fix inner sheath in its rest position. Device according to one or more of the preceding claims 13 to 20, characterized in that the impeller ( 61 . 94 . 97 ) in alignment with the central implementation ( 15 . 25 . 42 . 50 . 55 ) a central passage ( 32 ) for dispensing mixed material. Blade stirrer according to one or more of the preceding claims, characterized in that the outer upper and lower planes ( 73 . 74 ) in the upper or lower position of the Flügelrührers ( 1 . 94 . 97 ) are in frictional contact with the inner wall of the lid or the inner wall of the floor. Blade stirrer according to one or more of the preceding claims, characterized in that in the direction of rotation ( 71 ) preceding edges of the stirring blades ( 62 . 95 . 98 ) as sharp edges ( 74 ) are formed. Blade stirrer according to one or more of the preceding claims, characterized in that it is designed as a flat disc ( 84 ) is trained. Wing stirrer after one or more of the preceding claims, characterized that he is stuck with the stir bar connected is. Blade stirrer according to one or more of the preceding claims, characterized in that the impellers ( 62 ) by intermediate pieces ( 80 ) communicate with each other. Blade stirrer according to one or more of the preceding claims, characterized in that the intermediate pieces ( 80 ) between agitator blades ( 62 ) as parts of a connecting ring ( 82 ) are formed. Wing agitator according to claim 27, characterized in that the connecting ring ( 82 ) at a distance ( 83 ) from the end regions ( 63 ) the impeller ( 62 ) is arranged. Blade stirrer according to one or more of the preceding claims, characterized in that an outer blade stirrer (10) is attached to the drive stub or to the hub. 94 ) with long stirring blades ( 95 ) and an inner paddle stirrer ( 97 ) with short stirring blades ( 98 ) and that the outer vane agitator ( 94 ) at least two crescent-shaped stirring blades ( 93 ) whose end regions ( 96 ) abut against the inner wall of the agitating vessel under friction pressure, and that the inner vane stirrer ( 97 ) short crescent-shaped stirring blades ( 98 ) whose ends ( 99 ) at a distance ( 101 ) of end regions ( 96 ) of the long impellers ( 95 ) through a ring ( 100 ) are interconnected. Stirring vessel ( 11 ) with a circular cylindrical shell, which is integral with a lid ( 14 ), which has a central lid outlet ( 15 ), - with a screw cap for closing the central lid outlet ( 15 ). Stirring vessel according to Claim 30, having a piston-like bottom ( 21 ). Stirring vessel according to claim 30 or 31, wherein the bottom ( 21 ) of the mixing vessel a central implementation ( 25 ) for a stir bar. Stirring vessel according to claim 30, 31 or 32, with a stirring tool ( 30 ) in the interior of the mixing vessel, which is designed as a flat disc. Stirring vessel according to claim 30, 31, 32 or 33, with a stirring tool ( 30 ), which is connectable by a clip connection with the drive end of a stirring rod. Stirring vessel according to one of Claims 30 to 34, having a closure means ( 29 ) for the central implementation ( 25 ) of the soil ( 21 ) of the mixing vessel. Stirring vessel after a the claims 30 to 35, with agitator blades one stirring tool, which are successively inclined differently. Stirring vessel according to one of claims 30 to 36, with spacers ( 80 ), the impellers ( 62 ) of a stirring tool. Stirring vessel after a the claims 30 to 37, with a stirring tool, has the differently long stirring blades. Stirring vessel according to one of claims 30 to 38, with stirring blades ( 62 ) of a stirring tool having a rectangular cross section ( 77 ) with a sharp edge ( 79 ) exhibit. Stirring vessel according to one of Claims 30 to 39, having an ointment therein, in particular medicinal ointment and a stirring tool ( 30 ) without an end of a stir bar ( 4 ). Stirring vessel after a the claims 30 to 40, with a stirring tool, which with the drive end of a stir bar for the duration of the stirring operation can make a secure connection. Stirring vessel after a the claims 30 to 41, which settle in rest positions within the mixing vessel leaves. Stirring vessel according to one of claims 30 to 42, with a paddle stirrer ( 61 ) with agitator blades ( 62 ), whose inner regions ( 64 ) extend crescent-shaped from a hub to the outside. Stirring vessel according to one of claims 30 to 43, with dimensions of the stirring vessel ( 5 . 11 . 38 . 49 . 52 . 54 ), a stirring tool ( 6 . 30 . 47 . 61 . 94 . 97 ) and the drive end ( 56 . 87 ) of a stir bar ( 4 . 86 ) are coordinated so that the stirring tool during insertion of the stirring rod in the mixing vessel from the clamp in the rest position releasably and in its return from the mixing vessel can be clamped back in its rest position. Stirring vessel according to one of Claims 30 to 44, with a stir bar ( 4 . 86 ), with a piston-like bottom ( 21 ), which is provided with an annular elastic sidewall ( 22 ) and a lower edge ( 23 ) in order to ensure a tight closure of the piston-like bottom ( 21 ) within the mixing vessel ( 11 ). Stirring vessel according to one of claims 30 to 45, having a piston-like bottom ( 21 ), which is a central implementation ( 25 ) with a sealing guide ( 26 ) for a stir bar ( 4 ).