JP2003326146A - Stirring apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stirring apparatus which can evenly stir fluids and carry out various stirring modes for fluids responding to the fluids and tanks. <P>SOLUTION: The stirring apparatus is equipped with a gear box 1 which rotates on a self-axis reciprocally in opposite directions in a prescribed range of an angle, stirring members 2 and 3 installed in both side faces of the gear box 1 in a manner rotatable on self-axes, motors 4 and 5 for driving the gear box 1 and the stirring members 2, 3, and joint mechanisms 6, 7, and 8 for joining the gear box 1 and the stirring members 2 and 3 to the motors 4 and 5 in rotation transmissive manner. The stirring members 2 and 3 are swung back and forth around a base point of the gear box 1 following the rotation of the gear box 1 on the self-axis in the opposite directions, and at the same time the stirring members 2 and 3 move forward while half-rotating on the self-axes at the time of swinging and move backward while keeping horizontal state in the swinging direction. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a stirring device used for stirring various fluids.

[0002]

2. Description of the Related Art Conventionally, for example, in a raw water receiving tank or adjusting tank in a water treatment facility, when fine particles in the raw water settle at the bottom of the tank, the volume of the tank is reduced or the fine particles are not formed. It is necessary to stir the raw water in the tank because organic matter will spoil and generate an offensive odor. Further, in the activated sludge treatment tank in the water treatment facility, it is necessary to uniformly supply oxygen required for the activated sludge treatment to the entire treatment tank. In addition, in the case of realizing microfabrication in the manufacture of electronic parts and semiconductors, in order to improve process capability and save resources in chemical treatment and subsequent washing and washing treatment, the fluid in the treatment equipment should be uniform. Need to stir. In landscape ponds, agricultural ponds, fire protection water tanks, aquaculture tanks, aquarium water tanks, etc., if the water is stagnant, the water at the bottom is deficient in oxygen and rots. Needs to be stirred. Furthermore, in a reaction treatment tank in an industrial facility, for example, a plating tank, materials to be plated may collide with each other and be damaged, so that the fluid in the tank needs to be uniformly and gently stirred.

Conventionally, such stirring of the fluid stored in the closed water area is performed by rotating one or a plurality of propellers in the fluid, or by vigorously discharging the fluid by a pump. It was a thing.

However, in such stirring, there is a problem that a so-called dead zone in which the fluid does not flow easily occurs and it is difficult to uniformly stir the fluid. Also,
In such agitation, only a certain fixed agitation can be performed, and there is also a problem that one agitation device cannot realize various agitation modes of the fluid depending on the fluid and the tank.

The present invention has been made in view of the above problems, and it is possible to stir a fluid evenly and to realize various stir modes of the fluid depending on the fluid and the tank. The purpose is to provide a device.

[0006]

In order to achieve the above-mentioned object, the present invention has a rotating base body which rotates about its own axis in a fixed direction or a forward and reverse direction, and a side surface of the rotating base body intersects the rotating shaft of the rotating base body. One or a plurality of stirring members provided so as to be rotatable about their own axes on the axis, one or a plurality of driving devices that drive the rotating base and the stirring member, and rotation transmission between the rotating base and the stirring member and the driving device. The stirring member is configured to rotate about its own axis while moving around the rotation base according to the rotation of the rotation base in a constant direction or in the forward and reverse directions. And

[0007] According to this, the stirring member rotates about its own axis while moving the rotating base body as a base point in accordance with the rotation of the rotating base body in the fixed direction or in the forward and reverse directions, thereby generating an unsteady flow in the fluid. However, since such an unsteady flow is transmitted through the fluid, the fluid can be evenly stirred. Also, since the stirring mode of the fluid can be changed simply by changing the direction or range in which the rotating base or stirring member rotates about its own axis.
It is possible to realize various fluid agitation modes depending on the fluid and the tank.

Further, the rotating base body alternately rotates about its own axis in the forward and reverse directions within a range of a predetermined angle, and the agitating member uses the rotating base body as a base point in accordance with the rotation of the rotating base body about its own axis. It swings back and forth, and at the time of swinging, it moves forward while rotating its own axis so as to be in a state perpendicular to the swinging direction at least in part of the forward stroke, while it swings in at least part of the reverse stroke. It is preferable that it is configured to retreat while maintaining a horizontal state with respect to the moving direction.

According to this, the agitating member swings back and forth with the rotating base as a base point in accordance with the rotation of the rotating base in its own direction in the forward and reverse directions, and at the time of swinging, at least a part of the forward stroke. By advancing while rotating on its own axis so as to be in a state perpendicular to the rocking direction, the unsteady flow described above propagates in the fluid while being repeated in multiple layers, so that the fluid is stirred more evenly. be able to.
Further, in the swinging process, the stirring member retracts while maintaining a horizontal state with respect to the swinging direction,
Since the resistance of the fluid is reduced, the power consumption can be kept low.

Further, it is preferable that, when the stirring member swings, the stirring member rises from a horizontal state to a vertical state and further advances while rotating about its own axis so as to sag from the vertical state to the horizontal state. .

According to this, since the above-mentioned unsteady flow is generated more efficiently, the fluid can be stirred more uniformly.

Further, a pair of agitating members are symmetrically provided on both side surfaces of the rotating base, and the agitating members are alternately arranged forward and backward with the rotating base as a base point in accordance with the normal rotation of the rotating base in its own direction. It is preferable to rock.

According to this, unsteady flows are alternately generated from the respective stirring members and interfere with each other to generate a complicated and wider range unsteady flow, and such unsteady flows are formed in many layers. Since the fluid is repeatedly transmitted through the fluid, the fluid can be stirred more uniformly.

Further, the connecting mechanism includes a first drive shaft which is hollow in the axial direction and a second drive shaft which is inserted into the hollow inside of the first drive shaft, and the rotary base is the first drive shaft. 1 is connected to the drive device via a drive shaft so that rotation can be transmitted.
It is preferable that the stirring member is rotatably transmitted to the driving device via the second driving shaft.

According to this, it is possible to easily and surely realize the above-described operation of rotating the rotating base body and the stirring member about its own axis.

Further, the coupling mechanism includes a third drive shaft in which the second drive shaft is hollow in the axial direction and is further inserted into the hollow inside of the second drive shaft. The stirring member is preferably connected to the drive device via the third drive shaft in a rotationally transmittable manner.

According to this, when two or more stirring members are provided on the rotating base, the above-described operation of rotating the rotating base or the stirring member about its own axis can be realized simply and reliably.

Further, it is preferable that the rotating base and the stirring member are driven by a single driving device. According to this, the weight and the manufacturing cost can be kept low.

Further, it is preferable that a suction device for sucking dust is provided at the fitting friction portion. According to this, dust generated from the fitting friction portion is sucked and removed, and the inside of the tank can be protected from contamination.

Further, it is preferable that the stirring member is formed in a streamlined cross-section so that the wall thickness becomes gradually thinner toward the tip in the swinging direction. According to this, the resistance of the fluid generated when the stirring member retracts can be further reduced.

Further, it is preferable that the driving device is controlled based on an operation command from an external computer. According to this, it is possible to easily and surely change the operations of the above-described rotary base body and the stirring member for rotating and swinging about its own axis.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION [First Embodiment] Next, a stirrer according to an embodiment of the present invention will be described.

As shown in FIG. 1, a stirring device according to this embodiment includes a gear box (1) as a rotating base, a right stirring member (2) provided on both side surfaces of the gear box (1), and Left stirring member (3), gearbox motor (4) for driving the gearbox (1), stirring member motor (5) for driving the right stirring member (2) and the left stirring member (3) And the gearbox (1)
And a first connecting mechanism (6) for connecting the gearbox motor (4), a second connecting mechanism (7) for connecting the right stirring member (2) and the stirring member motor (5), and a left stirring member ( 3) A third connecting mechanism (8) for connecting the stirring member motor (5) and the fitting friction parts (1b) (1c) of the apparatus.
It is composed of a suction device (9) for sucking dust generated in (10b) and a casing (10) for supporting or accommodating them.

The gear box (1) is formed in the shape of a rectangular parallelepiped box and has a predetermined angle (90 degrees in this embodiment) with respect to the stirring direction (the direction of pushing out the fluid) by the stirring member motor (4). ) Within the range of which is supposed to rotate alternately in the forward and reverse directions. Further, as shown in FIG. 2, the gearbox (1) has a first connecting mechanism (7) and a third connecting mechanism (8), which will be described later, in the inside thereof.
Bevel gears (72) (73) and second bevel gear (82)
(83) is housed and the first connecting mechanism (6) is connected to the bottom (1a).

The first connecting mechanism (6) is for connecting the gearbox (1) and the gearbox motor (4) in a rotationally transmittable manner, and as shown in FIG.
It consists of a first drive shaft (61) and a gear (62). The first drive shaft (61) is formed hollow in the axial direction,
The upper end of the gearbox (1) is fixed to the back surface of the bottom (1a) of the gearbox (1) with screws or the like, and is vertically inserted into the upper plate (10a) of the casing (10), and is formed in the center thereof. The protrusion (61a) is supported by a support member (11) provided on the rear surface of the upper plate (10a) of the casing (10) so as to be rotatable about its own axis. The gear (62) is horizontally fitted to the lower end of the first drive shaft (61) and meshed with the gear (41) of the gearbox motor (4).

The rotation of the gearbox motor (4) is transmitted to the gearbox (1) via the gear (41), the gear (62) and the first drive shaft (61). Therefore, when the gearbox motor (4) alternately rotates in the forward and reverse directions, the rotation causes the gearbox (1) to alternate in the forward and reverse directions within a predetermined angle (90 degrees) with respect to the stirring direction. It rotates about its own axis.

The right-side stirring member (2) and the left-side stirring member (3) are both wide and thin shell-shaped stirring blades (21) and (31) and inner ends of the stirring blades (21) and (31). And a stirring shaft (22) (32) fixed at one end to the section. The stirring shafts (22) and (32) are horizontally inserted through both side surfaces of the gear box (1), and the second connecting mechanism (7) or the third connecting mechanism (8) is provided at the base end thereof. ) Is connected, whereby the stirring members (2) and (3) are provided on both side surfaces of the gearbox (1) so as to be rotatable about its own axis on an axis orthogonal to the rotation axis of the gearbox (1).

The material of the agitating blades (21) (31) is appropriately selected according to the type of fluid, and generally, a metal material or a plastic material is used, but the material is not particularly limited thereto. Not a thing. Examples of the plastic material include tetrafluoroethylene (Teflon (registered trademark)), peak, polyoxymethylene (Duracon),
Examples thereof include polypropylene, acrylic butadiene styrene, vinyl chloride and the like.

The second connecting mechanism (7) is for connecting the right agitating member (2) and the agitating member motor (5) in a rotationally transmittable manner, and as shown in FIG. 1
A hollow second drive shaft (71) inserted in the hollow inside of the drive shaft (61), and a pair of bevel gears provided at the upper end of the second drive shaft (71) and having a slightly larger diameter. (72)
(73) and a gear group (74) provided at the lower end of the second drive shaft (71).

The bevel gears (72) and (73) are a bevel gear (72) fitted vertically to the base end portion of the stirring shaft (22) of the right stirring member (2), and the second drive. Axis (7
Bevel gears (73) fitted horizontally on the upper end of 1)
And are meshed with each other at a meshing angle of 90 degrees, whereby the stirring shaft (22) of the right stirring member (2) and the second drive shaft (71) can transmit rotation in an orthogonal state. Be connected.

As shown in FIG. 4, the gear group (74) meshes with a gear (74a) horizontally fitted to the lower end of the second drive shaft (71) and the gear (74a). Gear (74b) provided in this state, and the gear (74b)
And a gear (74c) provided below the shaft via a shaft, and the gear (74c) meshes with the gear (51) of the stirring member motor (5), whereby the second drive shaft ( 71) and the stirring member motor (5) are connected so that rotation can be transmitted.

The rotation of the agitating member motor (5) is transmitted to the second drive shaft (71) via the gear group (74) and further to the right side via the bevel gears (72) and (73). It is transmitted to the stirring member (2). Therefore, when the stirring member motor (5) rotates in a fixed direction, the right stirring member (2) can rotate about its own axis in the fixed direction.

The rotation direction of the right stirring member (2) is interposed between the gear (51) of the stirring member motor (5) and the gear (74a) of the second drive shaft (71). Due to the two-stage gears (74b) (74c), the rotation direction of the left stirring member (3) described below is opposite.

On the other hand, the third connecting mechanism (8) is for connecting the left stirring member (3) and the stirring member motor (5) so that rotation can be transmitted, and the second drive shaft (71).
A third drive shaft (81) inserted into the hollow interior of the
A pair of slightly smaller bevel gears (82) (83) provided on the upper end of the drive shaft (81), and the third drive shaft (81)
And a gear (84) provided at the lower end of the.

The pair of bevel gears (82) (83) are
A bevel gear (82) vertically fitted to the base end of the stirring shaft (32) of the left stirring member (3) and a horizontal be fitted to the upper end of the third drive shaft (81). The bevel gear (83) and the bevel gears (83) mesh with each other at a meshing angle of 90 degrees, whereby the stirring shaft (32) of the left stirring member (3) and the third drive shaft (81) are orthogonal to each other. Is connected so that rotation can be transmitted.

The gear (84) is horizontally fitted to the lower end of the third drive shaft (81) and meshes with the gear (51) of the stirring member motor (5). Thus, the third drive shaft (81) and the agitating member motor (5) are connected to each other so that rotation can be transmitted.

The rotation of the stirring member motor (5) is transmitted to the third drive shaft (81) via the gear (84) and further to the left side via the bevel gears (82) (83). It is transmitted to the stirring member (3). Therefore, when the agitating member motor (5) rotates in a certain direction, the left agitating member (3) is rotated by the rotation of the left agitating member (3).
It can rotate in the opposite direction of its own axis rotation.

The drive shafts (61) (71) (8)
1) and the respective stirring shafts (22) and (32) are preferably made of materials such as alumina, zirconia, silicon carbide and quartz.

The gearbox motor (4) and the stirring member motor (5) are both motors having an AC servo function and have a built-in driver function. A stepping motor is used for the actual motor part. Behind these motors, a driver circuit board on which a 32-bit LSI chip is mounted is built in as an example of a magnetic position sensor. The adoption of a motor with a built-in driver can contribute to downsizing of the stirring device. Analog speed,
Position and torque control control is possible, and high resolution magnetic position sensor allows 50000 disassembly /
Since it is possible to rotate, it is possible to realize a wide variety of swing modes and rotation modes that are smooth and have high precision. The built-in driver board has a communication interface based on computer control technology, and can install various control programs created in advance from an externally connected computer (not shown).

Here, various swing modes and rotation modes are set as a recipe in the form of a program in a memory portion constituting a CPU chip in a control board with a built-in motor, and externally set according to necessary process conditions. It can be called and used by a command from the terminal. The above functions can also be realized by a command from a computer that is always connected. It is also possible to control automatically by an instruction from an online control computer that controls the entire factory.

The suction device (9) is connected to the three suction space portions (91) provided in the fitting friction portions (1b) (1c) (10b) and the suction space portions (91). Suction pipe (92), a suction pump (93) interposed in the suction pipe (92), and a filter (9) for filtering dust.
4) and. The suction pump (93) is a small plunger pump with a built-in check valve, and the structure of the suction pump (93) is simplified by utilizing the magnetic repulsion force connected to the gearbox motor (4) as a drive source. ing.

Then, each fitting friction portion (1b) (1
c) The fluid containing dust generated in (10b) is drawn into the suction pipe (92) from the suction space (91) by the action of the suction pump (93), and after passing through the suction pipe (92) as it is, The dust is filtered by the filter (94) and flows out again into the tank. Therefore, dust generated from the fitting friction parts (1b) (1c) (10b) is sucked and removed, and the inside of the tank can be protected from contamination. Since this agitator has a simple structure with few fitting friction parts, it is possible to reduce friction and dust generated from the fitting friction parts during driving.

In the wet process using a chemical solution,
The chemical liquid or cleaning water used is a single chemical substance or a mixture thereof, and is selected depending on the material to be treated and its process conditions. Therefore, in the agitator, the surface that is in direct contact with it has resistance to chemicals, and the connecting portion and the fitting frictional portion that occur during assembly retain high reliability for ensuring confidentiality against chemicals. .

For example, in FIG. 1, the stirring shaft (21)
(32) and gearbox (1) contact part, gearbox (1) joint part, first drive shaft (61) and gearbox (1) contact part, casing (10) joint part, and first O-rings are provided at the contact portions between the drive shaft (61) and the casing (10) to ensure airtightness. It should be noted that each of these O-rings is preferably a silicone resin having chemical resistance, a fluorine-based resin such as ethylene tetrafluoride (Teflon), or the like.

The casing (10) has a structure in which airtightness is secured so that fluid does not enter inside.
Further, the casing (10) is a right stirring member (2).
And has a weight sufficient to keep the whole stirring device stable against the reaction force caused by the rotation of the stirring blades (21) and (31) of the left stirring member (3). The casing (10) is preferably made of stainless steel such as SUS316 or an alloy or hasteroid having excellent corrosion resistance, and the surface thereof is preferably FRP lining or Teflon lining.

Next, the operation of the stirring device will be described.

In this embodiment, as shown in FIG. 5, the first drive shaft (61) alternately rotates about its own axis in the forward and reverse directions within the range of 0 to π / 2 (thick arrow), and its first Drive shaft (61)
Of the second drive shaft (7
1) is self-rotating in the positive direction, and the third drive shaft (8
It is assumed that the gearbox motor (4) and the drive motor (5) are controlled so that 1) rotates about its own axis in the opposite direction.

In this case, the clockwise direction as viewed from above the stirring device is the forward direction and the counterclockwise direction is the reverse direction. Further, as shown in FIG. 6A, a state in which the fluid is rotated to the right by 45 degrees with respect to the stirring direction (black arrow) of the fluid is set as a starting point of the operation.

First, when the first drive shaft (61) rotates itself in the opposite direction from 0 to π / 2, as shown in FIGS. 6 (a) to 6 (c), the first drive shaft (61) is rotated. The self-axial rotation of the gearbox (1) in the opposite direction by π / 2, and the right stirring member (2) is rotated by the right-side stirring member (2) according to the self-axial rotation of the gearbox (1) in the reverse direction. (1)
While advancing by π / 2 from the base point, the left stirring member (3)
Moves backward by π / 2 from the gear box (1) as a base point.

At this time, the stirring shaft (22) of the right stirring member (2) rotates counterclockwise π / 2 when viewed from the gearbox (1) according to the rotation of the gearbox (1) in the opposite direction.
However, since the second drive shaft (71) rotates in the positive direction by π / 2 in synchronization with the first drive shaft (61), the drive shaft of the right stirring member (2) ( 22) further rotates counterclockwise π / 2 as viewed from the gearbox (1), so that the stirring shaft (22) of the right stirring member (2) turns counterclockwise when viewed from the gearbox (1). The axis rotates itself by π. Therefore, the stirring blade (21) of the right stirring member (2) changes from the horizontal state to the vertical state as shown in FIG. 6 (b) while advancing by π / 2 from the gear box (1) as a base point. As shown in FIG. 6 (c), self-axis rotation is performed so as to rise, and further self-axis rotation is performed so as to sag from the vertical state to the horizontal state.

In this way, the stirring blade (21) of the right stirring member (2) rises from the horizontal state to the vertical state, and further moves forward while descending from the vertical state to the horizontal state by rotating itself about its own axis. An unsteady flow is efficiently generated in the fluid, and such unsteady flow propagates in the fluid.

On the other hand, the stirring shaft (3
2) tries to rotate itself by π / 2 counterclockwise as viewed from the gearbox (1) according to the rotation of the gearbox (1), but the third drive shaft (81) drives the first drive shaft. Since it rotates in the opposite direction by π / 2 in synchronization with the shaft (61), the stirring shaft (32) of the left stirring member (32) rotates itself by π / 2 in the clockwise direction when viewed from the gearbox (1). Since they rotate, the stirring shafts (32) of the right stirring member (2) do not rotate by themselves because their rotations cancel each other out. Therefore, the stirring blade (32) of the left stirring member (3)
As shown in FIGS. 6A to 6C, maintains the horizontal state while retreating by π / 2 from the gear box (1) as a base point.

Since the stirring blade (32) of the left stirring member (3) is retracted in the horizontal state in this way, the resistance of the fluid is reduced, so that the power consumption can be kept low.

Next, the first drive shaft (61) moves in the positive direction by π /
When self-rotating from 2 to 0, as shown in FIGS. 7 (a) to 7 (c), the gearbox (1) moves in the positive direction by π in accordance with the positive self-rotating of the first drive shaft (61). / 2, and the right stirring member (2) is rotated by the right-side stirring member (2) according to the positive axis rotation of the gearbox (1).
While retreating by π / 2 from the base point, the left stirring member (3)
Moves forward from the gear box (1) by π / 2.

At this time, the agitating shaft (22) of the right agitating member (2) will rotate by π / 2 in the clockwise direction as viewed from the gearbox (1) according to the axial rotation of the gearbox (1). However, since the second drive shaft (71) rotates in the positive direction by π / 2 in synchronization with the first drive shaft (61), the stirring shaft (22) of the right stirring member (2) is left. Since it rotates about its own axis by π / 2, the stirring shafts (22) of the right-side stirring member (2) do not rotate about their own axes because their rotations cancel each other out.

Therefore, the stirring blade (21) of the right stirring member (2) maintains the horizontal state while retracting by π / 2 from the gear box (1) as a base point, thus reducing the power consumption as described above. Produce the effect of.

On the other hand, the stirring shaft (3
2) rotates by π / 2 in the clockwise direction as viewed from the gearbox (1) in accordance with the rotation of the gearbox (1) by itself, but the third drive shaft (81) rotates by the first drive shaft (81). 61)
The drive shaft (32) of the left stirring member (3) rotates in the opposite direction by π / 2 in synchronization with the gear box (1).
Seen from the above, the axis rotates π / 2 further clockwise, so
Eventually, the stirring shaft (32) of the left stirring member (32) rotates itself by π clockwise when viewed from the gearbox (1).
Therefore, the stirring blade (31) of the left stirring member (3) moves from the horizontal state to the vertical state as shown in FIG. 7 (b) while advancing by π / 2 from the gear box (1) as a reference point. As the self-axis rotates so as to rise, and as shown in FIG. 7 (c), the self-axis rotates so as to sag from the vertical state to the horizontal state. Therefore, the unsteady flow is efficiently generated as described above. , Such an unsteady flow propagates in the fluid.

Then, the both stirring blades (21) (31) are
Starting from the horizontal state to the vertical state, moving forward from the vertical state to the horizontal state, rotating forward on its own axis, and moving backward while maintaining the horizontal state, the gear box (1) is used as a base point. And swing back and forth alternately.

Therefore, each of the stirring blades (21) (31)
The unsteady flows are generated alternately from each other, interacting with each other to generate a complex and wider unsteady flow, and such unsteady flows are propagated in the fluid while being repeated in multiple layers.
The fluid can be stirred more efficiently.

Various modes can be considered for the above-mentioned unsteady flow. For example, as shown in FIG. 8, a small vortex is generated around the stirring blade (21) along with the above-described operation of the stirring blade (21), and the vortices are aggregated into a vortex cluster, and the vortex cluster is stirred as it is. It is considered that the fluid is directionally transmitted to a distant place so as to be pushed out by the blades (21) (31).

In particular, when the rocking speed of the stirring blade (21), the rotation speed of its own axis, etc. are in an ideal state, FIG.
As shown in Fig. 2, a vortex ring is generated from a small vortex generated around the stirring blade (21), and the vortex ring is directly used for the stirring blade (2
1) It is possible that the fluid is directionally transmitted to a further distance so that it is pushed out by (31). Even if an obstacle is present in the course of its propagation, these vortexes and vortex rings wrap around behind the obstacle, so that stagnant objects in the shadow of the obstacle can also be stirred.

In addition, in this embodiment, the stirring blade is formed in a wide and thin shell shape, but it is not limited to this shape and may be formed in other shapes. For example, as shown in FIG. 10 (a), if the contour shape of the stirring blade is formed in a fin shape with its center displaced with respect to the axial direction of the stirring shaft, the stirring blade is strong in pushing out fluid when rotating. Such a snap effect is generated, and the above-mentioned unsteady flow can be efficiently generated. In addition, FIG.
As shown in, if the stirring blade is formed to have a streamlined cross-section that gradually becomes thinner toward the tip in the swing direction, the resistance of the fluid generated when the stirring blade retracts can be further reduced. Furthermore, if an elastic material is used for the peripheral edge of the stirring blade, the fluid will be pushed out when the stirring blade rotates, resulting in a stronger snap effect and more efficiently generating the above-mentioned unsteady flow. You can

Further, the eddy flow of the fluid as described above changes depending on the swing of the stirring blade and the angular velocity of its own axis rotation. For example, it is possible to optimize the swinging and self-rotating modes depending on the target device / tank structure of the chemical liquid wet process, the required quality of work, and the process conditions for achieving it. FIG. 11 (a) shows an example of the angular velocity of the half cycle of the swing of the stirring blade (21). In this example,
The angular velocity of rocking of the stirring blade (21) is kept low from 0 degree to 45 degrees, and from 45 degrees to 90 degrees in the latter half (the stirring blade (2
It continuously rises from 1) corresponding to its own axis rotation from 90 degrees to 180 degrees). FIG. 11B shows a stirring blade (21).
2 shows an example of a half-cycle angular velocity of its own axis rotation. In this example, the rotational speed of the stirring blade (21) is kept low from 0 to 90 degrees in the first half and from 90 to 180 degrees in the latter half (from 45 to 90 degrees of the stirring blade (21)).
Corresponding to rocking up to 10 degrees) continuously rises. According to this, it is possible to generate a vortex flow with a strong snap effect.

Further, although two stirring members (2) and (3) are provided in the stirring device, only one stirring member or three or more stirring members may be provided.

Although the right stirring member (2) and the left stirring member (3) are driven by a single stirring member motor (5), they are driven by separate stirring member motors. It may be one.

The gear box (1) is supposed to rotate in the normal and reverse directions within a range of 90 degrees with respect to the stirring direction. However, within the range of other angles, the gear box (1) is rotated in the normal and reverse directions. It may be rotatable.

The rotation operation of the gear box (1), the right stirring member (2) and the left stirring member (3) is shown in FIG.
Although the control is performed as shown in (a), it may be controlled to another rotation operation. For example, as shown in FIG. 5B, the first drive shaft (61) is rotated in the positive direction by itself, and the second drive shaft (71) and the third drive shaft are rotated by π / 2.
When the shaft is rotated in the normal and reverse directions within the range of 1, the gear box (1) rotates in the positive direction, so that the right stirring member (2) and the left stirring member (3) are rotated in the gear box (1).
While rotating in the positive direction with respect to, the fluid is agitated while rotating semi-axially alternately in the process of the rotational movement. Therefore, according to this agitation device, the agitation mode of the fluid can be changed only by changing the direction and range in which the gear box (1) and the agitation members (2) and (3) rotate about its own axis.
It is possible to realize various fluid agitation modes depending on the fluid and the tank.

In addition, the coupling mechanism includes an axially hollow first drive shaft (61) and an axially hollow second drive shaft (71) inserted into the hollow inside of the first drive shaft (61). )
And a third drive shaft (81) inserted in the hollow direction of the second drive shaft (71) in the axial direction, and the gear box (1) includes the first drive shaft (61). And the right stirring member (2) is rotatably connected to the stirring member motor (5) via the second drive shaft (71). The left stirring member (3) is connected to the stirring member motor (5) via the third drive shaft (81) in a rotationally transmittable manner, but the invention is not limited to such a connection mode. Absent.

For example, when the gear box (1) is provided with only one stirring member, the coupling mechanism includes a hollow first drive (61) in the axial direction and a hollow inside of the first drive shaft (61). A second drive shaft (71) inserted therethrough, the gearbox (1) is rotatably coupled to the gearbox motor (4) via the first drive shaft (61), and the stirring member May be connected to the stirring member motor (7) via the second drive shaft (71) so as to be rotatable. Also, one or two stirring member motors (5)
May be provided inside the gear box (1) and the stirring member motor (5) and the right stirring member (2) or / and the left stirring member (3) may be connected. [Second Embodiment] Next, a stirrer according to another embodiment of the present invention will be described.

The stirring device according to this embodiment rotates the gear box (101), the right stirring member (102) and the left stirring member (103) about its own axis by one drive motor (104).

That is, as shown in FIG. 12, this stirring device includes a gearbox (101) as a rotating base body which rotates about its own axis in the forward and reverse directions within a predetermined angle (90 degrees) with respect to the stirring direction. A right stirring member (102) and a left stirring member (103) provided on both side surfaces of the gear box (101), the gear box (101), the right stirring member (102), and the left stirring member (103) A drive motor (104) for driving the
1), a right-side stirring member (102), and a left-side stirring member (103) with a gear (62) for rotating about its own axis, a second
The connecting mechanism (7) and the third connecting mechanism (8), and the first
It is composed of a connecting mechanism (6), a second connecting mechanism (7), a third connecting mechanism (8), and a connecting mechanism (105) that connects the drive motor (104) in a rotationally transmittable manner.

The connecting mechanism (105) will be described in detail below.

The connecting mechanism (105) has a pair of bevel gears (1051) (1052), and one bevel gear (1051) is fitted vertically to the drive motor (104). , The other bevel gear (1052)
Are provided horizontally while meshing with one bevel gear (1051) at a meshing angle of 90 degrees.

A crank mechanism (1053) is provided above the other bevel gear (1052). As shown in FIG. 13A, the crank mechanism (1053) includes a drive wheel (1053a) of a slightly small diameter provided via the bevel gear (1052) via a shaft, and a gearbox (1). A slightly larger driven wheel (1053b) provided in mesh with the gear (62) and the driven wheel (103b).
53a) and a crank member (1053c) whose both ends are connected to the peripheral edge of the driven wheel (1053b).

As shown in FIG. 13B, the crank mechanism is a rack and pinion type crank mechanism (105
3 '). This crank mechanism (105
3 ') is a driven wheel (1053b') provided in a state of meshing with a drive wheel (1053a ') provided via the bevel gear (1052) via a shaft and a gear wheel (62) of the gear box (1). ), And a rack (1053d ′) provided in a state of meshing with the driven wheel (1053d ′),
Motor vehicle (1053a ') and rack (1053d')
And a crank member (1053c ') having both ends connected to.

When the swinging / stirring member motor (104) rotates in a fixed direction, the bevel gear (105)
1) The driving wheel (1053a) rotates in a fixed direction via (1052), and the driven wheel (1053b) alternates in the forward and reverse directions within a predetermined angle in accordance with the rotation of the driving wheel (1053a) in the fixed direction. As it rotates, the gearbox (10
1) can rotate its own axis alternately in the forward and reverse directions within a range of a predetermined angle (90 degrees) with respect to the stirring direction via the gear (62).

On the other hand, a winding transmission mechanism (1054) is provided below the other bevel gear (1052). The winding transmission mechanism (1054) includes a driving sprocket (1054a) having a small diameter provided via the bevel gear (1052) via a shaft, and the driving sprocket (105).
4a) and a driven sprocket (1054b) provided at a certain distance in the horizontal direction, and both sprockets (105
4a) (1054b) wrapped around the belt (105
4c), the gear group (74) of the second connecting mechanism (7) and the gear (84) of the third connecting mechanism (8) in mesh with each other, and through the shaft above the driven sprocket (1054b). And a gear (1054d) provided in the same manner.

When the swinging / stirring member motor (104) rotates in a fixed direction, the bevel gear (105)
1) (1052) through the drive sprocket (10
54a) rotates in a fixed direction, and the driven sprocket (1054a) follows the rotation of the driven sprocket (1054a).
54b) rotates in a fixed direction, and further, the gear (1054d) rotates in a fixed direction in accordance with the rotation of the driven sprocket (1054b), so that the right stirring member (102) is
The left stirring member (103) can rotate in the opposite direction to the right stirring member (102) through the third connecting mechanism (8) while rotating about its own axis via the connecting mechanism (7).

With the above structure, when the swinging / stirring member motor (104) is controlled to rotate in a predetermined direction,
Similar to the operation of the stirring device according to the first embodiment, both stirring blades (21) and (31) rotate about their own axes so as to rise from the horizontal state to the vertical state and then to fall from the vertical state to the horizontal state. By repeating the forward movement and the backward movement while maintaining the horizontal state, it is possible to alternately swing in the front-rear direction with the gear box (1) as a base point.

[0080]

According to the first aspect of the present invention, the agitating member rotates about its own axis while moving about the rotating base in accordance with the rotation of the rotating base in the fixed direction or the normal direction. An unsteady flow is generated in the fluid, and such unsteady flow is transmitted through the fluid, so that the fluid can be stirred uniformly. Further, since the fluid agitation mode is changed only by changing the direction or range in which the rotating substrate or the agitation member rotates about its own axis, various fluid agitation modes can be realized depending on the fluid or tank.

According to the second aspect of the invention, the stirring member swings back and forth with the rotary base as a base point in accordance with the rotation of the rotary base in the forward and reverse directions of its own axis. Since the unsteady flow described above is propagated in the fluid while being repeated in multiple layers by advancing while rotating on its own axis so as to be in a state perpendicular to the swing direction in at least a part of It can be stirred more uniformly. In addition, since the stirring member retracts in the swinging process while maintaining the horizontal state with respect to the swinging direction, the resistance of the fluid is reduced, so that the power consumption can be suppressed to a low level.

According to the third aspect of the invention, since the unsteady flow described above is generated more efficiently, the fluid can be evenly stirred.

According to the invention of claim 4, unsteady flows are alternately generated from each of the stirring members, and these unsteady flows interfere with each other to generate a complex and wider unsteady flow. Since such a wide range of unsteady flow is propagated through the fluid while being repeated in multiple layers, the fluid can be stirred more uniformly.

According to the invention of claim 5, it is possible to easily and surely realize the operation of the rotation base and the stirring member to rotate about its own axis.

According to the sixth aspect of the invention, when two or more stirring members are provided on the rotating base, the above-described operation of rotating the rotating base or the stirring member about its own axis can be easily and surely realized. .

According to the invention of claim 7, the weight and the manufacturing cost can be kept low.

According to the invention of claim 8, dust generated from the fitting friction portion is sucked and removed, and the inside of the tank can be protected from contamination.

According to the ninth aspect of the invention, the resistance of the fluid generated when the stirring member retracts can be further reduced.

According to the tenth aspect of the invention, it is possible to easily and surely change the operation of the rotating base body or the stirring member for rotating or swinging its own axis.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a stirring device according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of the stirring device in FIG.

FIG. 3 is a transverse sectional view of a first stirring shaft, a second stirring shaft, and a third stirring shaft.

FIG. 4 is a perspective view of a gear group of a second coupling mechanism.

FIG. 5 is a relative relationship diagram showing the rotation directions of the first stirring shaft, the second stirring shaft, and the third stirring shaft.

FIG. 6 is a plan view showing the forward movement process of the right stirring member and the backward movement process of the left stirring member in the order of stroke.

FIG. 7 is a plan view showing the backward process of the right stirring member and the forward revision of the left stirring member in the order of strokes.

8 is an explanatory diagram showing an example of an unsteady flow generated by the stirring device of FIG.

9 is an explanatory view showing another example of the unsteady flow generated by the stirring device of FIG.

FIG. 10 is (a) a plan view, (b) a side view, and (c) a front view of a stirring blade according to another embodiment of the present invention.

FIG. 11 is a graph showing (a) a swing mode and (b) a self-axis rotation mode of a stirring blade.

FIG. 12 is a schematic configuration diagram of a stirring device according to still another embodiment of the present invention.

13 is a plan view of a crank mechanism of the stirring device of FIG.

14 is a perspective view of a gear group of the stirring device in FIG.

[Explanation of symbols]

1 ... Gearbox 2 ... Right side stirring member 3 ... Left side stirring member 4 ... Gearbox motor 5: Motor for stirring member 6 ... First connection mechanism 7 ... Second connection mechanism 8 ... Third connection mechanism 9 ... Suction device 10 ... Casing

Continued front page    (72) Inventor Takashi Kanayama             No. 4, Kawada Shimizu-yaki Apartment Town, Yamashina-ku, Kyoto City, Kyoto Prefecture             Kinoyama Seiki Co., Ltd. F-term (reference) 4G036 AB05

Claims (10)

[Claims] 1. A rotary base body that rotates about its own axis in a fixed direction or a forward and reverse direction, and one or a plurality of agitators provided on the side surface of the rotary base body so as to rotate about its own axis on an axis that intersects the rotation axis of the rotary base body. A member, one or a plurality of driving devices that drive the rotating base and the stirring member, and a connecting mechanism that connects the rotating base and the stirring member to the driving device in a rotationally transmittable manner. An agitating device, characterized in that the rotating base body is rotated about its own axis while the rotating base body is moved as a base point in accordance with the rotation of the rotating base body in its own direction or in the forward and reverse directions. 2. The rotating base body rotates about its own axis alternately in forward and reverse directions within a range of a predetermined angle, and the stirring member is based on the rotating base body according to its own axis rotation in the forward and reverse directions. While swinging back and forth,
At the time of the swing, the robot moves forward while rotating its own axis so as to be in a state perpendicular to the swing direction at least in a part of the forward stroke, while it is horizontal to the swing direction in at least a part of the backward stroke. The stirrer according to claim 1, wherein the stirrer is configured to retract while maintaining the above. 3. The agitating member is so constructed that, when the agitating member swings, the agitating member rises from a horizontal state to a vertical state and further descends from its vertical state to a horizontal state while rotating about its own axis. A stirrer according to. 4. A pair of agitating members are symmetrically provided on both side surfaces of the rotary base, and the agitating members are alternated forward and backward with the rotary base as a base point in accordance with the normal rotation of the rotary base in its own axis. The stirring device according to claim 2, which swings. 5. The first coupling mechanism is hollow in the axial direction.
Drive shaft and a second drive shaft inserted into the hollow interior of the first drive shaft, wherein the rotary base is rotatably transmitted to the drive device via the first drive shaft. The stirring device according to any one of claims 1 to 4, wherein the stirring member is connected to the drive device via the second drive shaft so as to be rotatable. 6. The coupling mechanism includes a third drive shaft, wherein the second drive shaft is hollow in the axial direction, and the third drive shaft is inserted into the hollow inside of the second drive shaft. The stirring device according to claim 5, wherein the stirring member is coupled to the drive device via the third drive shaft so as to be rotatable. 7. The stirring device according to claim 1, wherein the rotating base and the stirring member are driven by a single driving device. 8. The stirring device according to claim 1, wherein a suction device for sucking dust is provided at the fitting friction portion. 9. The stirrer according to claim 1, wherein the stirrer is formed in a streamlined cross-section so that the wall thickness is gradually reduced toward the tip in the swinging direction. 10. The stirring device according to claim 1, wherein the drive device is controlled based on an operation command from an external computer.