JPS62129134A - Agitating mechanism - Google Patents

Abstract

PURPOSE:To effectively perform the agitation of a washing machine or the mixing of a powder or a liquid by performing three-dimensional agitation, by providing a transmission apparatus for reciprocally moving a shaft having blades fixed thereto in the axial direction thereof when said shaft is rotated. CONSTITUTION:When a shaft 4 is rotated by driving a motor, the rotor 23 mounted to the shaft also rotates in a chamber 17. A plurality of permanent magnets 36, 37, 38 are respectively mounted to the rotor 23, a housing 11 and a center case 14 on the same center circumference of a circle at the same interval and, when the opposed surfaces of the magnets 36, 37 come to different polarities and attract to each other, the magnets 36, 38 come to the same polarity and repulse to each other and rotor moves to the housing side. When the rotor further rotates, the magnets 36, 37 come to a combination of the same polarity while the magnets 36, 38 come to different polarities and, therefore, the rotor moves to the center case side. When the rotor makes one revolution, the rotor reciprocates two times in the chamber 17 and the blades provided to the leading end of the shaft also rotate while reciprocally moves to the rotary shaft direction and, therefore, agitation and mixing can be effectively performed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Application of the Product TX1- The present invention relates to a stirring mechanism for a fluid such as a washing machine, a ginner, a mixer, etc., which stirs and mixes a plurality of powder liquids.

The ttX stirring mechanism, which is based on conventional technology, and the stirring mechanism used when mixing multiple types of fluids such as powders and liquids, such as chemicals, are stirred by rotating blades installed in the stirring chamber. However, in this case, the blades are installed at the bottom of the stirring chamber and the blades are placed at this level.
It only rotates. Therefore, lfi! It was inefficient to evenly stir the fluid in the ff tank, and it was necessary to stir the fluid for a long time. In particular, when the fluid to be stirred and mixed is viscous, the
'If I didn't do that, I couldn't mix it evenly. In addition, when mixing multiple types of fluids with different specific gravities (1"), when stirring and mixing multiple types of powdered substances with external shapes of 5 mm, the mixing state is more uniform than J. 1q was 1.!

Problems to be Solved by the Invention The object of the present invention is to improve the drawbacks of the prior art and provide an efficient stirring mechanism. Furthermore, the specific gravity is 5'i!
An object of the present invention is to provide a device next to a stirrer that enables efficient and uniform agitation IY mixing even in the case of uniformly mixing multiple types of fluids, or even in the case of uniformly mixing powdered substances with different external shapes.

Means for solving the problem: When the shaft rotates, a transmission device is installed to reciprocate the shaft in the axial direction, and a blade in the stirring tank is attached to the tip of the shaft (l! The above problem was solved by connecting the end to a driving means for rotating the shaft, rotating the blades, and reciprocating the rotating shaft in the axial direction to stir three-dimensionally.

When the shaft is rotated by the driving means, the impeller rotates within the stirring chamber and the shaft transmits the transmission [? Since the rotary head of the blade moves back by +1 in the axial direction, the rotating head of the blade moves back by 11 in the direction of the rotation axis, and the fluid to be stirred is rotated and also moved in the axial direction, stirring by 11'. Efficiency is increased and uniform mixing is obtained faster when stirring and mixing.

Embodiment 1 FIG. 3 is an explanatory diagram of an embodiment of the present invention, in which 1 is a stirring tank;
2 is the stirring 'f! The blade 2 is a blade for stirring the fluid in the shaft 1, and the blade 2 is fixed to the shaft 4. The shaft 4 is fixed to a shaft (not shown). A spline groove 9 is formed at the other end through which the 7I neckpiece 3 is passed. The pulley 5 spline-coupled with the spline groove 9 is installed in the GJ
A 1.1 belt 7 is stretched between the pulley 5 and six pulleys fixed to the motor +l18 of the driver M.

Therefore, when the t-wheel M is driven and the motor shaft 8 rotates,
The shaft 4 rotates through the pulley 6° belt 7 and the pulley 5, causing the blade to rotate 26 times. J3.
10 is a bearing [J and is sealed at the bearing part.

FIG. 2 is a partial cross-sectional view showing each structure of the transmission device 3, in which 11 is a housing of the transmission device, and a fitting recess 12 is formed in the end face of the housing 11. Inside 4. A C-shaped recess 13 is formed at the corner of the fitting recess 12 , and a center case 14 is formed at the end of the housing 11 . 1 ■ It is attached by matching, l'
A through hole 1G having the same diameter as the concave portion 13 of the housing 11 is formed in the center case 14, and a hole 1G having the same diameter as the recess 13 of the housing 11 is formed between the center case 11 and the center 7 north 14, which is wider than the width of the rotary chopsticks. A rotary disk storage chamber 17 is formed with an interval corresponding to the moving distance of the foot 4, and a fan case 18 is fitted and attached to the end of the center case 14. The components 1 to 18 are attached by screwing the mounting bolts 19 into the ports 1 to 20 of the housing 11 (see FIG. 3) through the Linter case 14.

The shift/lift 4 is inserted into the center case 14 and the front case 18 so as to be movable laterally, and 11) an oil-free FM bag is installed in the housing 11 and the fron 1 to the case 18. A rotor 23, which is a rotary disk, is mounted near the shaft 221 + 22 ([which is pivotally supported by the shirt!・4 in the longitudinal direction center A], and the rotor 23 has its main body 24 implanted in the shafts 1 to 4. 25 is integrally attached to the shaft 4, and thrust ball bearings 26 and 26 are attached to the shaft 4 on both sides of the main body 24 of the rotor 23.

Reference numeral 39 indicates the screws 71 to 4 screwed onto the end of the shaft 4.
This is a nut to prevent it from being pulled out.

The bearing 21 fitted into the housing 11 is engaged by a locking plate 27 fitted to the end of the housing 4.
The locking plate 27 is attached to the housing 11 at ports 1 to 28, and the bearing 22 fitted in the front case 18 is attached to the locking plate 25 fitted to the end face of the front case 18. ], and the locking plate 29 is attached to the front case 18 with bolts 30.

Furthermore, the four parts 13 of the housing 11 and the center case 1
The through hole 16 of No. 4 is a space in which the main body 24 of the rotor 23 can move, and a locking ring 31 is provided on the end surface of the recess 13.
is attached to the through hole 1G of the front case 18.
A locking ring 32 is fitted on the end face facing the 102, and springs 33 and 33 are placed between the locking ring 31 and the thrust ball bearings 26 and 26 on both sides of the [1-ta 23]. It is inserted into the shirt [-1, and the rotor 2
3 is connected to the housing 11 by the spring 33;
It does not directly contact the inner end 34 of the mating recess 12 or the protrusion 15 of the center case 14, but has a slight space.

Next, to explain the rotor 23, the rotor 23
are at regular intervals along the circumference of the same center, as shown in Figure 4? ! Two permanent magnets 36 are integrally fitted together, and the permanent magnet 36 has a one-sided circularity of N-N in this embodiment.
-S S N -N -S-8,
A plurality of permanent magnets 37 are integrally fitted into the inner end surface 34 of the fitting recess 12 of the housing 11 that accommodates the first magnet 23 on the same center circumference as the permanent magnet 36 of the rotor 23 and at the same intervals. In addition, a plurality of permanent magnets 38 are integrated at the end portion 35 of the protrusion 15 that fits into the housing 11 of the center case 14 at the same intervals on the same center circumference as the permanent magnet 37 attached to the housing 11. The permanent magnet 37 of the housing 11 and the center case 14 are fitted and attached.
The permanent magnets 38 and the like are mounted at the same position facing the permanent magnet 36 of the rotor 23, and the polarity of the opposite sides of the permanent magnet 37 and the permanent magnet 38 is the same.
-8-N-N-8-S, and the rotor 2
3 is the permanent μL of the rotor 23 due to the rotation of the shaft 4.
When the polarity of the stone 3G and the facing surface of the permanent magnet 370 of the housing 11 becomes S-N or N-8, they strongly attract each other, and the polarity of the facing surface of the permanent magnet 370 of the permanent magnet 370 of the rotor 23 and the center case 14 becomes strong. S-8 or N-N repel each other, and the rotor 23 is moved toward the housing 11. Further, due to the rotation of the shifter 4, the permanent laminated stone 36 of the rotor 23 and the like are permanently removed from the housing 11. When the polarities of the opposing surfaces of the magnets 37 become S-8 or N-N, they repel each other, and the polarities of the opposing surfaces of the permanent magnets 3G of the rotor 23 and the permanent magnets 38 of the center case 14 become S-N or N. -8, and the rotors 23 are attracted to each other and the center case 1
411III, and when the polarity of the permanent magnet is N-N-3-8-N-N-8-8, the above [1-23 rotates for one rotation of the rotor 23. Since it reciprocates twice within the board storage chamber 17, the rotor 23 and the integrated cylinder 1r
The foot 4 also makes two reciprocating movements in the axial direction.

Next, to explain the operation of this embodiment, the stirring tank 1
When a fluid to be stirred is received in the interior and the motor M is driven, the rotation of the [-9 axis 8 of the motor M is caused by the pulley 6
, rotates the pulley 5 via the belt 7, and rotates the pulley 5 through the belt 7.
The shaft 4 mounted on one end rotates, and the U-mount 23 mounted near the longitudinal center of the shaft 4 also rotates within the rotary disk storage chamber 17.

Then, when the polarities of the opposing surfaces of the permanent magnet 36 of the rotor 23 and the permanent magnet 37 of the housing 11 become S-N or N-8, they attract each other, and at the same time, the permanent V11 stone 3G of the rotor 23 and the center Since the polarity of the facing surface of the permanent magnet 38 of the case 14 becomes S-8 or N-N and repulses in a negative manner, one spring 33 is compressed and the other spring is made to be compatible, and the rotor 23 moves toward the housing side. . However, due to the elasticity of the spring 33, the end surface of the rotor 23 does not come into contact with the inner end 34 of the fitting recess 12 of the housing 11.

Furthermore, the rotor 23 increases from 1 to 40 rotations.
permanent magnet 36 and permanent magnet 6ti'ri of housing 11
When the magnets on the surface facing the rotor 23 become S-8 or N-N, they repel each other, and at the same time, the permanent m of the rotor 23
? Ei 36 and the permanent magnet 38 of the center case 14 have polarities of the white surfaces of z and j that are S-N or N-8 and attract each other, so that the []-ta 3 moves toward the center case 14 once in the opposite direction as described above. To move. The end surface of the rotor 23 does not come into contact with the end 35 on the protrusion 15 side of the rotor case 14 due to the springs 33 and 33. When the shifter 4 rotates once, the rotary disk storage v1
7, the rotor 23 is moved 8 times toward the housing 11 or the rotor case 1/1 side.
is attached at one end to the boo 95 by a spline, so rotation and axial movement can be ensured.

Its binding is the feather 4!12 attached to the tip of the shaft 4.
As it rotates with S, it moves up and down in Fig. 1, and it stirs powder such as Qin Jing, which is the object to be stirred, or water and clothes in the case of washing machine W1.

In this way, the blades 2, which are the driving force for stirring, rotate and move back and forth in the axial direction (1), so that the fluid to be stirred undergoes swirling and vertical movement within the stirring groove 1 in Figure 1. , more uniform washing can be done faster and more uniformly (when the particles are stirred and agitated and mixed), washing can be done more efficiently with a washing machine.

Note that the center case 14 and the front case 18 may be provided integrally rather than separately, and the rotor 23° housing 1
1 and center case 14 have permanent magnets arranged in N-N-
If N-N-3-8-8-8, the shaft 1F shaft 4 moves 111 times in the axial direction for one rotation of [1-23], and the arrangement of the permanent magnets is N-8-8-8. N-S-N-S
-N -S, it is possible for the shaft 4 to move back and forth in the axial direction for one rotation of the rotor 23. In addition, if it is not necessary to make the force for moving the shirt [-4 in the axial direction so strong, the permanent magnet 5 of the rotor 23
The permanent magnet facing 36 may be only one of the permanent magnet 37 provided in the housing 11 or the permanent magnet 38 provided in the center case 14.

Furthermore, without providing the spring 33 in the four parts 13 of the housing 11 or in the through hole 10 of the center case 14,
A stopper is provided inside the four parts 13 and the through hole 16 of the housing 11 or outside the external front case 18 of the housing 11, and the axial movement amount of the shaft 4 is restricted by the collar and the rotor 23 is the housing 11
Alternatively, it is also possible to make it so that it does not come into contact with the inner case 14. At this time, it is preferable to use a silicone rubber sounding material that absorbs the surge resistance as a stopper to prevent the generation of sound. Attach the tooth width without any problem, and use the gear transmission to
Alternatively, the motor shaft 8 and the shirts 1-4 may be connected by a flexible shut.

In addition, in the embodiments 1) et al., the rotor 23. The magnets provided in the housing 11 and the center case 14 were permanent magnets 36, 37, and 38, but the rotor 2
3, an iron piece is fixed to the housing 11 and the center case 14, and an electromagnet is provided in place of the permanent V4i stone, and the electromagnet is alternately excited to attract the iron piece of the rotor 23.
[-]- The shaft 23 and the shaft 4 may be reciprocated in the axial direction.

In this case, one blade 2 side, that is, the center case 14
Only? ? [The coater 23 is provided with a stone, and the shaft 4 is normally positioned downward in FIG. ) You can move/force l-4 to one side. Moreover, without arranging the permanent magnets provided in the housing 11 in the same direction in the axial direction of the shirt 4, the permanent magnets provided in the housing 11 are゜Suppose that a DC electromagnet is installed in the center case 14 and the DC electromagnet is magnetized for 6 hours.
-1-The side facing E23 has the same polarity for both the biconvex flow electromagnets (
For example, by changing the direction of excitation, the side of the biconvex flow electromagnet facing the rotor 23 is controlled to have a different gravity (for example, S l(i )) at the same time.

As a result, when the side of the biconvex flow electromagnet facing the rotor 23 becomes the N pole, one DC RI electromagnet, for example, the housing 11
side) attracts the rotor 23. The other DC type magnet (center case 14 side) repels the rotor 23, moves the rotor 23 and shaft 4 toward the housing side, and conversely, the rotor 23 of the biconvex flow electromagnet faces the rotor 23. If the opposite side is set as the S pole, the rotor 23 will be attracted by the DC electromagnet on the center case 14 side, repelled by the DC electromagnet on the housing 11 side, and move toward the center case 14 side. In this way, the rotor 23 and shaft 4 are rotated and moved in the axial direction, and the blades 2
It is also possible to rotate and move the bar up and down in Figure 1.

In particular, when the rotor 23 and shaft 4 are moved in the axial direction by electromagnets, they can be moved in the axial direction regardless of the rotation speed of the shifter 41 and the blades 2.

Also, instead of the U-Yu, manually pulley 6, bells 1-7. It is also possible to rotate the si 71 to 4 via the pulley 5.

Furthermore, the axial reciprocating movement of the shaft 4 [''-
If you want to lengthen the length, use formula 1I shown in Figures 4 to 6.
JJ device 3 may be used.

4 is a cutaway front view of essential parts of another transmission device 3, FIG. 5 is a sectional view taken along line XX in FIG. 4, and FIG. 6 is a detailed diagram of the control circuit in FIG. 4.

This Den fJ+ device and the Den shown in Figure 2! The major differences between the JL and other models are the structure of the rotor 46 and the housing 41. ) [In case 42? ! The two points are that two Ti corner magnets are provided and that the center case 43 is provided with an auxiliary electromagnet.

That is, as shown in FIG. 5, eight main permanent magnets 47 are installed at equal intervals around the periphery of the rotor 46, and the direction of magnetization of the main permanent magnets 49 is the same in the axial direction of the shaft 4. In this embodiment, the left side of the rotor 46 in FIG. 4 is magnetized to the S pole, and the right side is magnetized to the Nli. Further, between these eight main permanent magnets 47, there are provided four auxiliary permanent magnets, which are magnetized in the radial direction of the rotor 46 and embedded in the circumferential surface of the rotor 46. The direction of magnetization of the permanent magnets 49 is also the same, and the permanent magnets 49 are embedded in the circumferential surface of the rotor 46 so that the same pole (in this embodiment, the N pole) appears. Moreover, the housing 41. Each front case 42 has 8m DC electromagnets 48a-1 to 48a-4.
8a-8, 48b-1 to 48b-8 (Figure 4 shows 2° n1 flow' F1 magnets 48a-1, 48a-2, 4)
8b-1, 4811-2 (1) Mi (1) DC fEr magnetic n
) are provided, and these DC lightning stones 48a-1 to 48a-8, 48t+-1 to 48b
-8 are all connected in parallel and are excited via the control circuit 53. And when excited,
These DC electromagnets 48a-1 to 48a-8, 48b-1
~48 b-8 are arranged so that the same polarity occurs on the side facing the rotor 46, and by changing the direction of excitation, that is, the direction of the original current in the coil of the DC electromagnet, the rotor 46 is The polarity of the facing side can be changed.

Further, in the center case 43, 8 vA auxiliary DC electromagnets 50 are embedded at equal intervals in the circumferential direction at the midpoint of the space formed by the housing 41 and the front case 42 so as to face the circumferential surface of the rotor 46. 43, these auxiliary DC electromagnets 50 are also connected in parallel, and when excited by a current in a certain direction via the control circuit 53, the same polarity will be applied to the rotor 4.
It is arranged so that it appears on the side facing the circumferential surface of 6.

FIG. 6 is a block diagram of the control circuit 53 in this transmission device, where 54 is a relay that is activated by a control signal a, and a contact 55 of the relay 54 connects each main electromagnet 48a-1 to 48a-1 to
This is to change the direction in which the magnets 8a-8 and 48b-1 to 48b-8 are excited. 56 is a one-shot multivibrator that generates positive pulses according to the rising and falling edges of control signal a; 57 is one-shot multivibrator 56
58 is an amplifier that amplifies the output of the one-shot multivibrators 56 and 57 and excites the auxiliary DC electromagnet 50.

Note that FIG. 7 does not show a timing chart of each signal in this control circuit 53.

Next, the operation of this transmission device 3 will be explained in detail.

When the power is turned on and the pulley 5 is rotated by the motor M, the shaft 4 rotates, and when the control signal a is not output, the j& of the relay 54 as shown in FIG.
Point 55 is connected to the 11L side in the figure, and this connection connects the main N magnets 48a-1 to 48a-8, 4Qb-1 to 48b.
-8, for example, each main electromagnet 48a-1 to 48a.
-8, 48t) -1 to 48b-8 on the side facing the rotor 4G, the main electromagnet 4 in the housing 41 (3a-1 to 48a-8 is on the rotor 46 The rotor 46 and shaft 4 are pulled to the left in the fourth electrogram by attracting the S pole of the first permanent meteorite 47.

On the other hand, inside the front case 42) Main W11a stone 48b-1
~48 b-81a rotor 4617) = 1 permanent fa
? E 47 ノ tI repel each other and push the rotor 4G and shaft 4 to the left in FIG.
] - The lever 46 and the shaft 4 compress the spring 51a, and the attraction force of the magnet is applied.

The forces of the repulsive force/degree rings 51a and 51b are balanced, and the surface of the J-ta/16 comes into contact with the housing 711, stopping at a slight point, 11),'! j'T: It will rotate. In this way, the rotor 46 and the shaft 4
While continuing to rotate at the position moved to the left in the figure, the control signal a is output as shown in FIG. Each main electromagnet 48a-1 to 48a-8, 48b-1 to 4 Q
The excitation direction of b-8 is changed, and an S pole is generated on the side facing the 1-ta 46, respectively. Therefore, the main electromagnets 48a-1 to 48a-8 on the housing 41 side repel the rotor 46, and the 1-electromagnets 43b-1 to 43b on the front case 42 side
b-8 will attract the rotor 46. On the other hand, the rising edge of the control signal a triggers the one-shot Marubo pie break 56, which outputs a positive pulse b as shown in FIG. is excited, producing an S pole opposite the circumferential surface of the rotor 46, and the outer circumferential surface embedded in the rotor 46 attracts the auxiliary permanent magnet /19, which is N pole, and moves to the right in Fig. 4. The rotor 46 and shaft 4 move to the right.

On the other hand, when the rotor 46 reaches the midpoint of the space 44, the output of the one-shot multivibrator 56 stops;
The one-shot multivibrator 57 is triggered by the fall of the output pulse b, and outputs a negative pulse C as shown in FIG. 7(c). This 0 pulse C is also amplified by the amplifier 58 and excites the auxiliary DC electromagnet 50, and since the excitation direction is different this time, the rotor 4G of the auxiliary DC electromagnet 50
A north pole is generated on the side facing the rotor 46 and tries to repel the rotor 46. The rotor 4G is the main 1m stone 48a inside the housing 41.
-1 to 48a-8, the front case 42
It is attracted by the main electromagnet 48bl~48+)-8 inside,
Moreover, due to the inertia of the movement IIJ to the right in FIG. 4, the rotor 46 passes the position of the auxiliary DC electromagnet 50, and as a result, the auxiliary DC electromagnet 50 repels the N 14, causing the rotor 46 to move as shown in FIG. Move to the center right. At the end, the rotor 46 and shafts 1 to 4 move to the right, and the main electromagnets 48a-1 to 48a-8 and 48b-1 to 48b-
The sum of the repulsive force and attractive force received from 8 and the spring 51a
The rotor 4
6 and the axial movement of the shaft 4 G, t P? The shaft 41 stops at that position and rotates. Moreover, when the -1llil signal a disappears, the C relay contact 55 similarly switches, and the main electromagnets 48a-1 to 48a-8
, 48b-1 to 4 f3, change the polarity of b-8, and amplify the signal from the amplifier 58 as shown in Figure 7 (2).
Each auxiliary DC electromagnet 5o is excited, and the rotor 46. shirt 1
-4 is moved to the right in Fig. 4 and rotated at that position.

In this manner, by using the auxiliary DC electromagnet 50, etc., the stroke of the reciprocating movement of the shaft 4 in the axial direction can be lengthened in the transmission device 3 shown in FIGS. 4 to 7. .

Effects of the Invention As described above, in the present invention, the blades of the stirred meat are rotated and at the same time are moved back and forth in the direction of the axis of rotation of the blades, so that the stirred material is stirred in one part by the rotation of the blades. (In addition, the reciprocating motion of the blades in the axial direction also causes agitation in the axial direction, resulting in good agitation efficiency. When used in washing machines, etc., dirt from clothes, etc. can be removed more quickly and efficiently. If you use it in a juicer or mixer, you can efficiently and quickly convert one drink such as juice into 1!'? Also, when mixing several types of liquids with different specific gravities, you can use J3. ,
Even when mixing powdered substances with different external shapes, it is possible to uniformly mix 1q more quickly.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of one embodiment of the present invention, Fig. 2 is a partial sectional view of the transmission device, Fig. 3 is a sectional view taken along line A-A in Fig. 2, and Fig. 4 is a separate sectional view. 5 is a sectional view taken along line X--X in FIG. 4, FIG. 6 is a block diagram of the control circuit in FIG. 4, and FIG. 7 is an operation timing chart of the control circuit. 1... Stirring tank, 2... Blade) R13... Transmission device,
4... Shaft 1-15, 6... Pulley, 7... Belt, M... [-9, 11, 41... Housing,
14.43...Center case, 18.42...Front case, 23°46...Rotor, 33.51.
...Spring, 36°37.38.47...Permanent magnet 1.48a -1,488-2,48b-1,48b
-2... DC electromagnet, 49... Auxiliary permanent magnet, 50
...Auxiliary DC electromagnet. Figure 1 Go to Figure 6 Figure 7

Claims (6)

[Claims] (1) It has a shaft provided in a stirring tank to which a blade is fixed, a driving means for rotating the shaft via a transmission mechanism, and a transmission device for reciprocating the shaft in the axial direction when the shaft rotates. Stirring mechanism. (2) The transmission device includes a disc-shaped rotor fixed to the shaft, which has magnets arranged around the same center circumference with alternating polarity at regular intervals, and the rotor is movable in the axial direction. a case forming a rotor storage chamber having a space, and at least one surface of the case facing the rotor has magnets of the rotor having alternating polarities at the same constant intervals on the same center circumference. 2. The stirring mechanism according to claim 1, wherein a magnet is provided. (3) The transmission device includes a disc-shaped rotor fixed to the shaft and having iron pieces arranged around the periphery, a case forming a rotor storage chamber having a space in which the rotor can move in the axial direction, and the case. 2. The stirring mechanism according to claim 1, wherein an electromagnet is provided on at least one surface facing the rotor. (4) The transmission device includes a disk-shaped rotor that is fixed to the shaft and has magnets magnetized in the same axial direction around the shaft, and a rotor storage chamber that has a space in which the rotor can move in the axial direction. 2. The stirring mechanism according to claim 1, wherein a DC magnet is provided on each of the formed case and the surface of the case that faces the rotor. (5) Claim 1, wherein the driving means is a motor.
The stirring mechanism according to item 2, item 3, or item 4. (6) The transmission mechanism that connects the drive means and the shaft is comprised of a pulley spline-coupled to the shaft, a pulley rotated by the drive means, and a belt installed between both pulleys. The stirring mechanism according to item 1, 2, 3, 4 or 5.