JPH0618622B2 - Mixing and stirring device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a mixing / stirring device for a liquid flowable substance, and more specifically, to put an object to be mixed and an object to be stirred in a container, and orbit the container. However, the present invention relates to an apparatus capable of performing extremely efficient mixing and stirring by rotating it.

The term “mixing and stirring” as used in the present invention means mixing at least one kind of substance selected from a solution, a dispersion, and a granular material in a liquid fluid substance, or simply stirring the liquid fluid substance. Point, as a result, dissolution, dispersion, washing,
The functions such as heating, evaporation and reaction can be obtained.

(Prior Art) Conventionally, there are the following devices for mixing and stirring a solution, a dispersion, powder or the like into a fluid substance in a container.

A method of mechanically mixing and stirring by placing a blade that rotates or moves up and down in a container. A method in which the container is turned over and shaken to cause the liquid in the container to flow and to be mixed and stirred. In addition, a method of applying energy such as magnetism, high frequency, and ultrasonic waves from the outside. There is a method in which the liquid in the container is made to flow by making the container soft and deforming the container.

(Problems to be Solved by the Invention) However, the conventional method has the following drawbacks.

There is adhesion to wings etc.

If the distance from the blade or the like increases, the stirring power becomes insufficient.

Highly viscous liquids tend to be large or complicated because the whole is mixed and stirred uniformly.

When sealing, a special mechanism is required and it lacks in decompression and pressurization.

The effect greatly depends on the shape of the container, the size of the wing, and the shape.

There is a possibility of damage and deterioration of the mixed agitator accompanied by heat generation.

(Means for Solving Problems) The present inventors have conducted intensive studies to improve the above problems, and have completed the present invention.

That is, the present invention is a mixing and stirring apparatus characterized in that a substance to be mixed and stirred is put in a container and the container is allowed to rotate while revolving.

The present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the mixing and stirring apparatus of the present invention.

The rotational force generated by the drive motor 1 is transmitted to the revolution shaft 3 by the belt 2. The period of revolution is appropriately determined depending on the material to be mixed and stirred, but the mixing and stirring material is 10 PS.
A standard period of 30 rpm to 120 rpm for a material of ~ 500 PS.

The rotation of the revolving portion causes the belt 5 to rotate without sliding on the outer periphery of the pulley 4 fixed integrally with the main body fixing frame 9. However, here, the pulley 4 is not connected to the revolution shaft 3. Therefore, the belt 5 advances by the outer diameter of the pulley 4, is transmitted to the pulley 6 fixed to the rotation shaft, and rotates the rotation shaft 7.

For example, when the pulleys 4 and 6 have the same diameter, the revolution cycle and the rotation cycle are the same. As shown in FIG. 1, when the rotation shaft 7 is inclined with respect to the revolution shaft 3 toward the inner side of the rotation orbit, the mixing and stirring property is improved. This angle is appropriately determined by the properties of the mixing and stirring material and the rotation cycle.

The mixing and stirring material is fixed by the can fixing frame 8, and after fixing, the driving motor 1 is operated to perform mixing and stirring.

FIG. 1 illustrates the shape of the apparatus when the synthetic resin emulsion paint and the black pigment paste are put and mixed in a 5 gallon can as in the embodiment described later, and the shape is as shown in the drawing. However, the shape of the device is not limited to this, and is appropriately determined depending on the usage form. For example, do not use a drive motor and make it manual.

The inclination of the rotation axis is variable.

Change the shape of the can fixing frame appropriately.

The distance between the axis of revolution and the axis of rotation is variable.

A fixing device is installed appropriately for fixing the can without using a frame.

Install a mixing tank without fixing the can.

And so on.

(Operation) The present invention is a mixing and stirring method utilizing centrifugal force generated by revolving the mixing and stirring material.

When the container containing the mixed stirring material is revolved, a centrifugal force acts in the outer direction of rotation. However, the centrifugal force acts only in a fixed direction only by the revolution, and the materials cannot be mixed and stirred. This is a new mixing and stirring device having a mechanism in which when the container is rotated around the axis of revolution, the direction of the centrifugal force acting on the material in the can moves, and the liquid in the container rotates and mixes and stirs.

The concept of the present invention will be briefly described with reference to FIGS. 2 and 3. FIG. 2 is a diagram of the mixing and stirring apparatus according to the present invention as viewed from directly above, and is a diagram on the assumption that, at the same time as the revolution, the autorotation is performed in the same cycle in the direction opposite to the revolution direction. Here, the circle represents the revolution orbit, and the arrow represents the direction of centrifugal force. The squares indicate the mixing and stirring vessels, and A, B, C, and D indicate the positions of the cans every 90 ° on the revolution orbit. Also, let arbitrary points on the can wall of the container be E and F. On the orbit, the can moves in the order of A → B → C → D → A, and at this time, points E and F rotate once in the direction opposite to the revolution during one revolution. The direction of centrifugal force is A, B, C,
It can be seen that each position of D changes.

Thus, in the present invention, the direction of the centrifugal force acting on the material in the can generated by the rotation is further sequentially and continuously changed by the rotation, so that the material in the container is fluidized and mixed and stirred.

Next, FIG. 3 is a diagram of the mixing and stirring apparatus when the rotation motion is not performed, as viewed from directly above. As is clear from the figure, the direction of the centrifugal force at each of the positions A, B, C, D is always constant from point F to point E. In this case, fluidization hardly occurs in the can and sufficient mixing and stirring cannot be obtained.

(Example) Example A white base of JIS K 5663 synthetic resin emulsion paint (manufactured by Shikoku Kaken Kogyo Co., Ltd., trade name AEP base) was mounted on a 8 gallon can as it was using the apparatus shown in FIG. The lid was opened and 50 g of a black pigment paste (carbon black dispersion paste, solid content about 50%) was added thereto.

This is set to a distance between the revolution axis and the rotation axis of 40 cm, and revolution cycle 1
The operation was performed for 1 minute at a rotation rate of 00 times / minute and a rotation cycle of 100 times / minute.

The axis of rotation is tilted inward by 30 ° with respect to the axis of revolution.

After the operation was completed, the can was removed from the device, the top plate was cut off, and the state of the paint was observed.
Transfer this paint to another container and put it in the top, middle and bottom of the can.
When paints were sampled at certain points and formed into coating films under constant conditions, and the color difference was measured with a Tokyo Denki color difference meter, the maximum color difference was ΔE = 0.05. No paint adhered to the cut-off top plate, and the paint near the can wall was wiped with a rubber spatula, but it was uniformly mixed up to the can wall.

Comparative Example 1 The same pigment paste was added to the same paint as in Example 1
Mixing was performed under exactly the same conditions as in the example except that the belt 5 in the figure was removed.

After the operation was completed, the can was removed from the apparatus, the top plate was cut off, and the state of the paint was observed, but the mixing was insufficient.

Comparative Example 2 Paint agitator (manufactured by Shimazaki Seisakusho: Patent No. 564227) was prepared by adding the same pigment paste to the same paint as in Example.
No.) for the same time. However, they were not mixed at all and were continuously operated for a total of 10 minutes.

After the operation, the color difference was measured by sampling in the same manner as in the example, and the maximum color difference was ΔE = 1 or more. It should be noted that the top plate that was cut off had paint adhered to it, and the paint near the can wall was wiped off with a rubber spatula, but the can wall was not evenly mixed and the white paint was especially at the corners. Was left in.

(Effects of the Invention) As described above, the following effects are clarified by the mixing using the apparatus shown in FIG.

(1) Since it can be mixed and stirred in the product can, there is no need to transfer it to another container for mixing and stirring, and no loss occurs.

(2) A stirrer such as a hand mixer is unnecessary, and the loss due to the stirrer does not occur.

(3) When mixing and stirring with a can, it can be fixed simply by fitting the can into the fixed frame, and the operation is easy.

(4) Open can operation is possible by setting the shaft distance and rotation cycle appropriately.

(5) There is no blind spot and uniform mixing and stirring is possible.

From the above effects, the apparatus of the present invention is not limited to the toning of the paint shown in the examples, but is widely used, for example, remixing of separated pastes, mixing of reaction-curable materials, mixing of liquid materials and granular materials, etc. It is a useful invention that can be used in application fields.

[Brief description of drawings]

FIG. 1 shows an embodiment of the mixing and stirring apparatus of the present invention. Second
FIG. 3 is an explanatory view of the concept of the mixing and stirring apparatus of the present invention, and FIG. 3 is an explanatory view of the concept when rotation is not performed. 1 ...... Revolution movement drive motor 2 ...... Belt 3 ...... Revolution shaft 4 ...... Pulley 5 ...... Belt 6 ...... Pulley 7 ...... Rotating shaft 8 ...... Can fixing frame 9 ...... Main body fixing frame 10 ...... Arm A , B, C, D: Can position at every 90 ° on the revolution axis E, F: Any point on the can wall

Claims (2)

[Claims] Claim: What is claimed is: 1. A revolving shaft, to which a driving force from a driving device is transmitted at the lower end, and a rotating shaft having a container attached to the upper end, one end of which is joined to the upper end of the revolving shaft, and the other end of which rotates. The arms are movably penetrated to each other at a distance from each other, and the fixed pulley that the revolution shaft penetrates and does not rotate when the revolution shaft rotates, and the pulley that is joined to the lower end of the rotation shaft and rotates together with the rotation shaft by the belt. A mixing and stirring device characterized by being engaged. 2. The mixing and stirring device according to claim 1, wherein the rotation shaft is inclined in the direction of the revolution shaft.