JP2711964B2 - Method and apparatus for stirring and defoaming liquid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid for removing air bubbles mixed in, for example, a powder and a liquid, a plurality of liquids, or a highly viscous liquid. More particularly, the present invention relates to an improved method for simultaneously stirring and defoaming liquids in a simple operation and in an extremely short time.

[0002]

2. Description of the Related Art As a conventional apparatus for stirring and defoaming liquids and solutions, for example, a vacuum pump is provided, and a rotating blade is mechanically swirled in the liquid in a vacuum layer. A device that simultaneously performs stirring and defoaming in the liquid, and a stirring blade attached to the tip of a rotating shaft of a motor, and the stirring blade is rotated in a processing object such as a liquid to stir the liquid. There are generally provided devices for performing only the above. For defoaming a high-viscosity liquid having a viscosity of 100,000 CP (centipoise) or more, for example, a pipe-shaped member is artificially rotated on a high-viscosity liquid placed on a flat base to thereby remove the pipe-shaped member. There is known a defoaming method in which bubbles are sequentially removed from the high-viscosity liquid using a peripheral surface.

[0003]

The conventional method using the above-described vacuum pump has an advantage that a single processing amount is large, but on the other hand, for example, a corner portion in a container or the like is required. Insufficient agitation action, or it takes a long time for preparation before setting the inside of the vacuum layer to a predetermined degree of vacuum before the processing work. It has been pointed out that it takes a long time for stirring and defoaming.

Further, in the above-mentioned conventional method using a stirring blade, it is necessary to carry out a defoaming step of the object to be treated in advance, and in the stirring step, in particular, a stirring action of a corner portion or the like in the container. Have been pointed out as insufficient.

Further, in the conventional method using the above-mentioned pipe-shaped member, not only is the processing efficiency low, but it is difficult to always obtain a constant defoaming effect. It has been pointed out that a hazardous liquid such as a solvent has a risk of work such as adversely affecting the human body.

According to the present invention, air bubbles mixed not only in a low-viscosity liquid but also in a high-viscosity liquid can be easily and reliably defoamed in a short time, and simultaneously with the defoaming action, It is an object of the present invention to provide a method and an apparatus for agitating and defoaming a liquid which can also perform the agitation action of the liquid.

Further, the present invention provides an inexpensive liquid stirring and defoaming method and apparatus excellent in workability and operability while miniaturizing the overall shape, thereby enabling easy stirring and defoaming by a simple operation. It is an object of the present invention to meet the demands of this kind of industrial field for simultaneously and surely processing in a short time.

[0008]

A method for defoaming a liquid according to the present invention for solving the above-mentioned technical problem is to rotate a container accommodating a required amount of an object to be processed while revolving the container. Utilizing the centrifugal force action, the liquid having a high specific gravity in the object to be processed is moved outward, and bubbles mixed in the liquid with the movement of the liquid to the outside are pushed out in the opposite direction to form the liquid. It is characterized in that it has a defoaming action for separating bubbles.

Further, in the method of stirring and defoaming a liquid according to the present invention, a container accommodating a required amount of the object to be processed is rotated while revolving, thereby utilizing the centrifugal action of the object to be processed. A defoaming action of moving a liquid having a high specific gravity inside to the outside, pushing bubbles mixed in the liquid with the movement of the liquid to the outside in the opposite direction to separate the liquid and the bubbles, And the stirring action is performed simultaneously.

The liquid stirring and defoaming device according to the present invention comprises a fixed shaft installed in a case, a gear for directly connecting a revolving drum and a container mounting arm rotatably connected to the fixed shaft. A revolving drum having a revolving drum, a revolving drive motor in which a revolving drive gear is engaged with a revolving drum direct coupling gear in the revolving drum, and a container rotatably pivotally attached to an end of the container mounting arm. A rotating shaft for rotation, a container rotating bevel gear and a container mounting portion provided on the container rotating shaft,
A rotation relay gear rotatably pivotally mounted on the rotation drum via a rotation / rotation cut bearing, and a rotation driving gear in which a rotation transmission drive gear is engaged with the rotation relay gear on the rotation drum. A motor, a rotation transmission shaft rotatably pivoted to the container mounting arm, and one rotation transmission gear provided on the rotation transmission shaft being engaged with the rotation relay gear on the revolution drum. The other rotation transmission bevel gear provided on the rotation transmission shaft is configured to engage with the container rotation bevel gear on the container rotation rotation shaft.

Further, the liquid stirring / defoaming apparatus according to the present invention is characterized in that an overload prevention mechanism is provided at a position opposite to the container mounting arm.

[0012]

By rotating the container containing the required amount of the object to be processed (liquid) while revolving, the centrifugal action is used to move the liquid having a high specific gravity in the object to the outside. The defoaming action of extruding air bubbles mixed into the liquid with the outward movement of the liquid in the opposite direction to separate the liquid and the air bubbles is performed.

At this time, since the container undergoes a revolving action while undergoing a revolving action, a helical flow (vortex) is generated in the liquid in the vessel and the stirring action can be performed simultaneously. it can.

Further, when the entire device (mechanism) is shaken beyond the allowable range, the balance adjusting weight is automatically moved outward through the unbalanced catch type clutch and the slip clutch. By adjusting the balance, overload can be prevented.

[0015]

Next, the present invention will be described with reference to the drawings. FIG. 1 schematically shows the overall configuration of a mechanism in a liquid stirring / defoaming apparatus according to the present invention for processing an object to be processed a such as a liquid.

The mechanism of the apparatus is installed in a small outer case (not shown), and a fixed shaft 21 is erected on a bottom plate in the outer case. A revolving drum 19 provided with a revolving drum direct connection gear 7 and a container mounting arm 6 is rotatably mounted on the fixed shaft 21.

A revolving drive gear 8 driven by a revolving drive motor 9 is engaged with the revolving drum direct-coupling gear 7, so that the rotational driving force of the revolving drive motor 9 is: It is provided so that the drum 19 can be rotated (arrow C) and the arm 6 can revolve (arrow B) at the same time through the gear 8 and the gear 7. In the example shown in the drawing, since the revolution drive motor 9 is driven to rotate clockwise, the case 6 in which the container mounting arm 6 revolves counterclockwise (arrow B) is shown. Further, the revolving drive motor 9 may be of a forward / reverse type. Also, the number of rotations of the motor 9 is arbitrarily selected.
What can be set may be used.

On the orbiting drum 19, the orbital
A rotation relay gear 17 is rotatably pivoted via a rotation cut bearing 18. Furthermore, the rotation relay gear 17
The rotation transmitting drive gear 5 driven by the rotation driving motor 10 is engaged with the container mounting arm 6.
One of the rotation transmitting gears 4 on the rotation transmitting shaft 25 rotatably connected to the first gear is engaged. Therefore, the motor 10
Is used to rotate the rotation transmission shaft 25 via the gear 5, the gear 17, and the gear 4, and to rotate the other rotation transmission bevel gear 2 provided on the rotation transmission shaft 25. Therefore, the rotation of the rotation transmitting bevel gear 2 is controlled by the rotation drum 19 described above.
And the revolving action of the arm 6 can be performed substantially unrelated.

The rotation transmitting bevel gear 2 on the rotation transmitting shaft 25 is a container rotating bevel gear 3 on a container rotating shaft 23 rotatably connected to the end of the container mounting arm 6. Therefore, the rotational driving force of the motor 10 transmitted to the rotation transmitting bevel gear 2 is transmitted through the gear 3 to the container provided at the upper end of the container rotation shaft 23. The mounting portion 24 is provided so that it can rotate.
In addition, the container mounting portion 24 detachably mounts the container 1 containing a required amount of the object to be processed a, and
The container 1 fitted in the container 24 is provided so as to be able to rotate integrally with the container mounting portion 24.

When the container mounting arm 6 revolves, the object to be processed a in the container 1 fitted in the receiving tray 24 easily spills outward due to centrifugal force and is easily scattered. The mounting angle of the container 1 is set to an inclination angle of about 35 degrees to about 45 degrees with respect to a vertical line, and the container 1 is disposed such that the upper end side is inclined toward the center of revolution.

On the upper end of the fixed shaft 21, an unbalanced catch type clutch 16 and a balance transmission drive gear 22 are provided. Further, an arm 6a provided on a revolving drum 19 opposite to the container mounting arm 6
, A rotating shaft 26 for transmitting balance is rotatably provided upright. The rotation shaft 26 is provided with a balance transmission gear 11 engaged with the balance transmission drive gear 22, a slip clutch 12 for preventing overload, and a balance transmission bevel gear 20. A ball screw 14 for weight movement is rotatably pivoted in a direction perpendicular to the rotation shaft 26. Further, the weight moving ball screw transmission gear 13 provided at one end of the weight moving ball screw 14 and the rotating shaft 26
The balance transmission bevel gear 20 is engaged with the balance transmission weight 20, and a balance adjustment weight 15 is fitted to the ball screw 14 in a non-rotating state. Therefore, the overload can be prevented by the movement of the weight 15 corresponding to the rotation of the rotating shaft 26 via the clutch 16 and the slip clutch 12.

That is, the vibration of the mechanism is electrically detected and detected.
A vibration sensor (not shown) for detecting the vibration is provided, and the contact plate in the unbalanced catch type clutch 16 is brought into contact with the revolving shaft by the vibration detected and detected by the vibration sensor, and the balance is transmitted by the power of the revolving. Drive gear 22
The balance transmission gear 11, the balance transmission bevel gear 20, and the weight transfer ball screw 14 are rotated so that the balance adjustment weight 15 on the ball screw 14 can be gradually moved outward. . Therefore, for example, when the amount of the object a to be accommodated in the container 1 or its specific gravity value is changed, it is necessary to adjust the balance at the time of high-speed revolution,
Such a balance adjustment is performed as follows. For example, first, the rotational speed is once fixed at a low speed of 200 to 300 RPM, and the vibration of the mechanism is electrically captured by a sensor.
The inner contact plate is brought into contact with the revolving shaft, and the revolving power rotates the balance transmission drive gear 22, the balance transmission gear 11, the balance transmission bevel gear 20, and the ball screw 14 for weight transfer to adjust the balance on the ball screw 14. The weight 15 is gradually moved outward. Then, after electrically detecting that the vibration of the mechanism section has fallen below the reference value from the vibration sensor, the revolving speed is automatically increased, and the object a is stirred and defoamed.

When the type and properties of the object to be processed a are specified, the most effective revolving and rotation control of the object to be processed a can be performed by a simple operation using the above-mentioned microcomputer mounted control function. It can be automatically selected and set. For example, the viscosity (CP), separability,
Various combinations of revolutions and rotations such as solubility and agitation / defoaming of powder and liquid or agitation / defoaming should be programmed in the memory element of the controller in advance. Accordingly, it is possible to obtain the function and effect according to the purpose with a simple operation.

Hereinafter, a case in which the object a is stirred and defoamed using the above apparatus will be described. First, the container 1 accommodating a required amount of the object a is fitted into the container mounting portion 24. Next, the revolving drive motor 9 rotates the revolving drive gear 8, the revolving drum direct-coupling gear 7, the revolving drum 19, and the container mounting arm 6, and the container mounting arm 6 provided on the container mounting arm 6 is rotated. The container mounting portion 24 on the diversion rotary shaft 23 and the container 1 are revolved. Furthermore, the rotation driving motor 5, the rotation transmission drive gear 5, the rotation relay gear 17, the rotation transmission gear 4, and the container rotating bevel gear 3 are rotated to rotate the container rotation rotating shaft 23.
The upper container mounting portion 24 and the container 1 are rotated (arrow A).

At this time, the object to be processed (liquid) a in the container 1
The liquid having a high specific gravity moves outward due to the centrifugal force caused by the revolution of the container 1, and the air bubbles mixed in the liquid are pushed out in the opposite direction with the liquid moving outward. Will be. Therefore, the separation of the liquid and the air bubbles, that is, the defoaming action, is performed in the object a. At this time, since the container 1 undergoes the rotation operation while undergoing the above-described revolving operation, a spiral flow (vortex flow) is generated in the liquid in the container 1 and the stirring operation is simultaneously performed. Can be.

When the entire device (mechanism) is shaken, for example, exceeding an allowable range, as described above, the unbalanced catch type clutch 16 and the slip clutch 12 are used to control the balance. The adjustment weight 15 is automatically moved outward to adjust the balance, thereby preventing overload.

In the above embodiment, the rotation relay gear 17
And revolution-cut bearings between the revolution drum 19 and
By arranging 18, the proportional relationship between the number of revolutions and the number of revolutions is cut off. Therefore, for example, when the rotation driving motor 10 is driven and the revolving drum 19 and the rotation relay gear 17 are held at the same rotation speed, even if the container 1 is revolving, the rotation speed is 0 ( That is, a state in which the container does not rotate) can be set. Further, for example,
When the rotation speed of the relay gear 17 for rotation is higher than that of the drum 19 for revolution, the rotation direction of the container 1 rotates counterclockwise. Conversely, the relay gear 17 for rotation rather than the drum 19 for revolution
When the rotation speed of the container 1 is reduced, the rotation direction of the container 1 rotates clockwise.

The present invention is not limited to the above-described embodiment, and other methods and configurations may be arbitrarily and appropriately changed and selected as needed without departing from the spirit of the present invention. Can be adopted.

For example, when the container 1 accommodating the object to be processed a is fitted and set in the container mounting portion 24, the container rotating shaft 23
The center of rotation of the container and the center of the container 1 are eccentric,
The container may be configured to rotate eccentrically. In this case, the eccentric rotation of the container is advantageous in that a synergistic effect of stirring and defoaming the liquid can be obtained.

[0030]

According to the present invention, the number of revolutions and the number of revolutions can be appropriately changed in accordance with the type and property (particularly, viscosity) of the object to be treated, and the container is revolved during the revolution of the container. Because the rotation direction of the object can be changed in the normal and reverse directions, the object to be processed can be stirred and defoamed in a very short time regardless of the type and properties of the object to be processed. Effect.

Further, according to the present invention, the preparatory work as described above can be omitted, and the object to be processed can be stirred and defoamed immediately. In addition, there is an excellent effect that it is possible to meet the demands in this kind of industrial field, that is, efficient and reliable processing in a short time.

Further, according to the present invention, since the overall shape of the apparatus can be reduced, an inexpensive liquid stirring / defoaming apparatus excellent in workability and operability can be provided. It has a practical effect.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view schematically showing a mechanism in a liquid stirring / defoaming apparatus according to the present invention.

FIG. 2 is a partially cutaway front view schematically showing a configuration of a mechanism in the liquid stirring / defoaming apparatus corresponding to FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container 2 Bevel gear for rotation transmission 3 Bevel gear for container rotation 4 Gear for rotation transmission 5 Driving gear for rotation transmission 6 Arm for container attachment 6a arm 7 Gear for direct connection to revolution drum 8 Gear for revolution drive 9 Revolution drive motor 10 Motor for rotation drive 11 Balance transmission gear 12 Slip clutch 13 Ball screw transmission gear for moving weight 14 Ball screw for moving weight 15 Balance adjusting weight 16 Unbalance catch type clutch 17 Rotating relay gear 18 Revolution / rotation cut bearing 19 Revolution drum 20 Balance transmission bevel gear 21 Fixed shaft 22 Balance transmission drive gear 23 Container rotation axis 24 Container mounting part 25 Rotation transmission axis 26 Rotation axis A Container rotation direction a Workpiece B Arm rotation direction C Drum rotation direction

Claims (4)

(57) [Claims] 1. A container containing a required amount of an object to be processed is rotated while revolving, so that a liquid having a high specific gravity in the object to be processed is moved outward by utilizing the centrifugal action. A defoaming method for a liquid, comprising performing a defoaming action of extruding bubbles mixed in the liquid in the opposite direction as the liquid moves outward to separate the liquid and the bubbles. 2. A container containing a required amount of an object to be processed is rotated while revolving, so that a liquid having a high specific gravity in the object to be processed is moved outward by utilizing its centrifugal action. The defoaming action of extruding bubbles mixed into the liquid with the movement of the liquid to the outside in the opposite direction to separate the liquid and the bubbles, and the stirring action of the liquid are simultaneously performed. Of liquid to be stirred and defoamed. 3. A revolving drum provided with a fixed shaft installed in a case, a revolving drum directly connected gear rotatably mounted on the fixed shaft and a container mounting arm, and a revolving driving gear. A revolving drive motor engaged with a revolving drum direct-coupling gear in the revolving drum, a container rotating shaft rotatably pivoted to an end of the container mounting arm, and a container rotating shaft. A container rotating bevel gear and a container mounting portion, and a rotation relay gear rotatably pivotally mounted on the revolving drum via a revolving / rotating cut bearing;
A rotation drive motor in which a rotation transmission drive gear is engaged with a rotation relay gear on the revolving drum, a rotation transmission shaft rotatably pivoted on the container mounting arm, and a rotation transmission shaft on the rotation transmission shaft. One of the rotation transmission gears provided is engaged with the rotation relay gear on the revolution drum, and the other rotation transmission bevel gear provided on the rotation transmission shaft is rotated by the container rotation on the container rotation shaft. A liquid stirring / defoaming device characterized by being configured to engage with a bevel gear. 4. The liquid stirring / defoaming device according to claim 3, wherein an overload prevention mechanism is provided at a position opposite to the container mounting arm.