JP2003159522A - Mixing apparatus and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mixing apparatus and method having high agitation efficiency without using a current plate. <P>SOLUTION: In the mixing apparatus provided with a mixing vessel 4, which is provided with a lower half portion of an inverse circular truncated trapezoid or a semi-fusiform and in which material is supplied, an inner side agitation means 2, which makes the material flow toward the outer and upper sides of the mixing vessel by rotating at the central part of the mixing vessel, and an outer side agitation means 3, which makes the material flow toward the inner side of the mixing vessel by rotating along the inner wall of the mixing vessel, the inner side agitation means 2 is provided with a screw 24 having diameters increased from the lower portion toward the upper portion. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a kneading apparatus for producing a kneaded material such as fresh concrete by stirring and kneading various materials.

[0002]

2. Description of the Related Art As a conventional kneading device, for example, there is one shown in Japanese Patent No. 3001387 (Japanese Patent Laid-Open No. 8-150330). This kneading device comprises an inner stirring means vertically provided at the center of the kneading container, an outer stirring means rotating along the inner wall of the kneading container, a straightening plate rotating together with the outer stirring means, an inner stirring means and an outer stirring means. It consists of a drive system that rotates in the opposite direction. The inner agitating means causes the material to flow upward and outward, and the outer agitating means causes the material to flow downward and inward, thereby forming a high-pressure band in which the material collides in a high-pressure state together with a rectifying plate that causes the material to flow inward. Then, kneading is performed.

[0003]

The above-mentioned conventional kneading apparatus is required to form a high-pressure zone of high pressure without using a straightening vane to improve stirring efficiency.

The present invention has been made in consideration of such requirements, and an object of the present invention is to provide a kneading apparatus and a kneading method having a high stirring efficiency without using a straightening plate.

[0005]

Means for Solving the Problems In order to solve the above problems, the kneading device according to the present invention employs the following means.

That is, as described in claim 1, a kneading container equipped with a lower half portion having an inverted truncated cone shape or a semi-spindle shape and into which a material is charged, and a material which is rotated at a central portion of the kneading container to outside the kneading container. And an inner stirring means for flowing upward,
In the kneading device provided with an outer stirring means for rotating the material along the inner wall of the kneading vessel to flow the material to the inside of the kneading vessel, the inner stirring means is equipped with a screw whose radius increases from the lower part to the upper part. To do.

According to this means, the high-pressure zone of the material formed by the inner stirring means and the outer stirring means maintains a high pressure even in the upper part of the kneading container by the screw whose radius increases from the lower part to the upper part. Become.

Further, as described in claim 2, claim 1
In the kneading apparatus described above, the angle formed by the line connecting the outer diameter portions of the screw and the horizontal line is equal to or larger than the inclination angle of the lower half of the kneading container, and is in the range smaller than 90 degrees.

With this means, the gap between the screw and the outer stirring means is properly secured.

Further, as described in claim 3, claim 1
Alternatively, in the kneading device according to the second aspect, the outer stirring means includes a plurality of stirring blades along the inner wall of the kneading container, which causes the material to flow to the inside of the kneading container in a part of the height direction of the kneading container. It is characterized in that it is provided at different heights of the kneading container and at different circumferential positions of the kneading container.

In this means, the size of the radius of stirring of the plurality of stirring blades and the height position of the kneading container are different, and the material is extruded inward by the upper stirring blade,
The material is extruded inward by the lower stirring blade, and the phases are sequentially shifted to flow and stir. Further, the high pressure zone of high pressure is maintained in the upper part of the kneading container by combining with the screw whose radius increases toward the upper part. In addition, each stirring blade is formed short.

Further, as described in claim 4, claim 3
In the kneading device described above, the stirring blades are provided at substantially equal intervals in the circumferential direction.

By this means, the pressure inside the kneading vessel is balanced.

Further, as described in claim 5, claim 3
Alternatively, in the kneading device described in 4, the flow capacity of the stirring blade is increased as the upper stirring blade of the plurality of stirring blades is provided.

The material is made to flow inside the kneading container with a larger flow force as the stirring blade at the upper part.

[0016] Further, as described in claim 6, claim 1
In the kneading device according to any one of 1 to 5, the outer stirring means is provided with two slopes so that the material can flow to the inside of the kneading container by rotating in the same direction as the inner stirring means and rotating in the opposite direction. And

With this means, the outer stirring means can stir the material in both directions of rotation.

Further, as described in claim 7, claim 1
The kneading device according to any one of 1 to 6 is characterized in that it is provided with a rotation direction switching means capable of switching the rotation direction of the outer stirring means between rotation in the same direction as the inner stirring means and rotation in the opposite direction.

With this means, the outer stirring means can be freely switched to rotate in the same direction as the inner stirring means and to rotate in the opposite direction, and the flow speed of the material is increased in the rotation in the same direction, and the rotation from the same direction to the reverse direction is increased. The switching increases the relative speed of the outer stirring means and the material.

Further, in order to solve the above-mentioned problems, the kneading method according to the present invention employs the following means.

That is, as described in claim 8, in the kneading method of the kneading device according to any one of claims 1 to 7, after rotating the outer stirring means in the same direction as the inner stirring means for a predetermined time. The outer stirring means is rotated in the opposite direction for a predetermined time.

In this means, the outer stirring means is switched from the co-rotating operation to the counter rotating operation, and the co-rotating operation increases the flow speed of the material, and then the co-rotating operation reverses the counter rotating direction. By switching to rotation, the relative speed between the outer stirring means and the material is increased.

Further, as described in claim 9, claim 8
In the kneading method described above, switching of the rotation direction of the outer stirring means is repeated a plurality of times.

In this means, the operating state in which the flow velocity of the material is increased by rotation in the same direction and the operating state in which the relative speed between the outer stirring means and the material is increased by switching to the reverse rotation are repeated.

[0025]

Embodiments of the kneading device according to the present invention will be described below with reference to the drawings.

1 to 6 show an embodiment (1) of a kneading device and a kneading method according to the present invention.

The kneading device 100 of this embodiment is suitable as a kneading device using the kneading material M such as cement, aggregate, and water necessary for producing fresh concrete.

The kneading apparatus 100 comprises a kneading container 4, an inner stirring means 2 which is vertically installed at the center of the kneading container 4 and rotates.
The outer stirring means 3 is rotatably provided outside the inner stirring means 2, and the driving means 5 is mainly included.

The kneading vessel 4 has a substantially cylindrical upper half 41 having an opening at the upper end, a cylindrical lower half 42 having an inverted truncated cone shape or a semi-spindle shape, and an opening at the upper end. It comprises a lid 43 having a shaft hole 44 in the center, and a gate 48 capable of opening and closing a discharge port 47 at the bottom or bottom.

The lid 43 is provided with a material feeding portion 45 which is partially opened and surrounded by a hopper 46. The gate 48 is for discharging concrete and the like mixed from the inside of the kneading container 4, and can be opened and closed manually or by the power of an air cylinder 49 or the like.

The driving means 5 is mainly composed of a driving portion 51 including an electric motor for driving the inner stirring means 2 and a driving portion 52 including an electric motor for driving the outer stirring means 3. A gear 53 is connected to the drive unit 52, and the gear 53 meshes with the gear 54. The driving method of the outer stirring means 3 is not limited to the method using the gear, and may be driven by a pulley and a belt, for example.

The inner stirring means 2 is provided at the center of the kneading container 4 and is rotated by a drive unit 51 to rotate the rotary shaft 22.
And a spiral blade 23 fixed to the rotary shaft 22. The rotary shaft 22 and the spiral blade 23 form a screw 24. Also, the blade 23 is 2
The blades 23a and 23b are wound around the rotary shaft 22 with their phases shifted by 180 degrees (see FIG. 2). The screw 24 is formed such that the radius of the blade 23 gradually increases from the lower part to the upper part as shown by the radius r2 of the upper part of the kneading container 4 with respect to the radius r1 of the lower part of the kneading container 4. There is.

The degree of increase in the radius of the screw 24 is related to the inclination angle θ1 of the lower half portion 42 of the kneading container 4, and the angle θ2 formed by the line L connecting the screw outer diameter portions 25 and the horizontal line due to the increase in the radius of the screw 24. Is equal to or larger than the inclination angle θ1 of the lower half portion 42 of the kneading container 4 and smaller than 90 degrees.

The spiral direction of the blade 23 is rightward when viewed from above, that is, the left screw direction. When the screw 24 is rotated counterclockwise (in the direction of arrow R1 in FIG. 1), the inside of the kneading container 4 is rotated. A propulsive force that causes the injected material M to flow upward and outward is provided. The screw 24 may be spiraled in the right-handed screw direction.

The outer stirring means 3 is externally mounted coaxially with the rotary shaft 22 of the inner stirring means 2 by a driving unit 52 (gear 5
Rotation shaft 32 (via 3, 54), a flange 36 fixed to the rotation shaft 32, an arm 33 extending in a radial direction from the flange 36, and a support vertically extending from the arm 33 to the kneading container 4. It is composed of a member 34 and an agitating blade 35 fixed to the supporting member 34 and having a substantially triangular prism shape with a slight gap maintained between it and the inner wall of the kneading container 4.

The stirring blade 35 of the outer stirring means 3 is
The material M is made to flow into the kneading container 4 at a part in the height direction of the kneading container 4, and a plurality of stirring blades 35 are provided at different heights and different circumferential positions of the kneading container, three here.
They are provided at substantially equal intervals of 120 degrees in the circumferential direction.

That is, the stirring blade 35 is a stirring blade 35a for stirring the lowermost portion and a stirring blade 35 for stirring the uppermost portion.
c and a stirring blade 35b that stirs the intermediate portion thereof, and the stirring blades 35 are provided so as to overlap each other in the height direction although the positions in the height direction are different. In addition, in this embodiment, the stirring blade 35c is directly connected to the arm 33. Usually, the outer stirring means 3
Are set to rotate in the opposite direction to the rotation of the inner stirring means 2, and these stirring blades 35 rotate in the rotation direction R2 shown in FIG.
The material M is pushed out toward the inside of the kneading container 4.
A propulsive force that causes the fluid to flow inside the kneading container 4 is provided.

The number of stirring blades 35 is not limited to three, and the number may be appropriately selected depending on the capacity and size of the kneading device. Further, in this embodiment, the stirring blade 35 is provided with the inclined surface 352 so that stirring can be performed in the same direction as the rotation of the inner stirring means 2.

The operation of the kneading device 100 thus constructed will be described below. FIGS. 3 and 4 to 6 are front sectional views and plan sectional views showing the flow direction of the material inside the kneading device 100. Here, the outer stirring means 3 is
Different positions in the height direction of the kneading container 4 at different phases (1
Although stirring is carried out (shifted by 20 degrees), a continuous stirring blade 35 is shown in FIG. 4 to 6 are sectional views of the kneading container 4 at different heights.

R of the screw 24 which is the inner stirring means 2
By the rotation in one direction, the upward flow f1 and the outward flow f2 are formed (see FIG. 3), and the flow f5 is formed in the rotation direction R1 (see FIGS. 4 to 6). Also,
By the rotation of the stirring blade 35, which is the outer stirring means 3, in the R2 direction, an inward flow f4 is formed and a flow f6 is formed in the rotation direction R2. Furthermore, kneading container 4
Due to the inverted frustoconical or semi-spindle shape of the lower half 42, a material flow f3 (also drawn by the upward flow f1 of the screw 24) is formed along the slope of the kneading vessel 4.

When these flows overlap, the material M rises in the central portion of the kneading container 4, descends in the vicinity of the outer peripheral portion, and recirculates to the central portion again to generate circulating flows (f1, f3). further,
The outward flow f2 and the inward flow f4 are screw 24
And the stirring blades 35 collide in the space between them, and the flows f5 and f6 in the rotational direction collide with each other to form the high pressure zone 1 in which the material M is in a high pressure state.

In the high-pressure zone 1, the material M receives a strong compressive force, and at the same time, its reaction (expansion force) instantaneously and repeatedly works, so that the particles of the material repeat the collision friction. . That is, in the high pressure band 1, a strong twisting force,
Shearing force and pressure will be applied. as a result,
Even in the case of particles having different materials, binding is forcibly performed and the particles are kneaded intimately.

It is considered that the pressure p generated in the high pressure zone 1 is greatly influenced by the distance between the blade 23 of the screw 24 and the stirring blade 35. That is, as the distance between both blades increases, the pressure p in the high pressure zone 1 decreases. However, in the case where the radius of the screw is constant as in the conventional case, the distance to the stirring blade becomes too large as it goes to the upper part of the kneading container 4, and the pressure p of the high-pressure zone 1 becomes smaller as it goes to the upper part. . As a countermeasure against this, a rectifying plate was provided, but like the screw 24, the radius of the blade 23 increases from the lower part to the upper part from r1 to r.
2, by gradually increasing the size, the distance between the blade 23 of the screw 24 and the stirring blade 35 is not changed, or the expansion of this distance is relaxed,
Depending on the height direction of the kneading container 4, the pressure p of the high-pressure zone 1 can be made substantially constant or little changed. In other words, the pressure p of the high-pressure zone 1 is set to be almost constant or little depending on the height direction of the kneading container 4 (so as not to decrease from the lower part to the upper part of the kneading container) of the screw 24 of the inner stirring means 2. The radius increases from the bottom to the top.

Further, by increasing the radius of the blade 23 of the screw 24 toward the upper part of the kneading container 4,
The peripheral velocity of the screw outer diameter portion 25 is increased by the rotation of the screw 24, and the outward flow f2 and the rotational flow f5 sent from the screw outer diameter portion 25 are increased in speed, and the pressure p of the high pressure zone 1 is increased. Can be increased.

Further, as shown in FIG. 6, each stirring blade 35
Since the size of the radius of stirring of a, 35b, and 35c and the height position of the kneading container 4 are different, the stirring blade 35
After the material M is extruded inward by a, the material is extruded inward by the stirring blade 35b, and further, the stirring blade 3
Flow and stirring are sequentially performed with the phases shifted so that 5c acts similarly. In this way, since the flow of the material M by the outer stirring means 3 is formed with the phases shifted at different heights of the kneading container 4, the conventional outer stirring means having stirring blades continuous in the height direction of the kneading container 4 is formed. Compared with the above, the stirring performance as the outer stirring means 3 is improved. And
The material M flowing by the outer stirring means 3 collides with the material M flowing by the inner stirring means 2 in which the radius of the blade 23 increases from the lower part to the upper part to form the high pressure zone 1, so that the high pressure p It is possible to maintain the performance of forming the high-pressure zone 1 and enhance the fluidity of the material M.

By these, the high-pressure zone 1 in which the pressure changes little depending on the position in the height direction of the kneading container 4 is formed,
It is possible to enhance the stirring efficiency without providing a current plate as in the conventional case.

According to this embodiment, the inner stirring means 2
The high pressure zone 1 of the material M formed by the screw 24 that is the outer peripheral stirring means 3 and the stirring blade 35 that is the outer stirring means 3 is
Since the high pressure is maintained even in the upper part of the kneading container 4, the stirring efficiency can be improved without using the straightening plate.

Further, each stirring blade 35a, 35b, 35c
The radial length of stirring and the radial position are different, and the material M is extruded by sequentially shifting the phases by the stirring blades 35b and 35c after the material M extruded by the stirring blades 35a. , Flow and stirring are performed,
The fluidity of the material M is improved.

Since the stirring blade 35 is divided into three parts,
Each one can be shortened, and the drive torque of the stirring blade 35 can be reduced. Since the stirring blades 35 are provided at substantially equal intervals in the circumferential direction, the pressure inside the kneading vessel 4 is balanced and a stable operating state can be maintained.

In this embodiment, the blade 23 is a two-blade blade which is 180 degrees out of phase with each other. However, a single blade may be wound in a spiral shape. It is also possible to use three or more blades.

If necessary, the conventional patent No. 3001
A rectifying plate as disclosed in Japanese Patent No. 387 is attached to the outer stirring means 3
It is also possible to fix the rotation shaft 32 between the inner stirring means 2 and the inner stirring means 2 so as to rotate together with the outer stirring means 3. When the screw 24 becomes too large at the upper part due to the size (capacity) of the kneading container 4, it is also effective to use a rectifying plate together. Thereby, when the radius of the screw 24 is enlarged at the upper portion, it is possible to suppress the increase of the radius of the screw 24.

7 to 12 show an embodiment (2) of the kneading device according to the present invention.

This kneading device 200 is used in the embodiment (1).
On the other hand, the outer stirring means 3 is changed.

The outer stirring means 3 is the stirring blade 3 on the upper side.
5, the flow capacity of the stirring blade 35 is increased. Specifically, the triangular column of the intermediate stirring blade 35b is made larger than the triangular column of the lowermost stirring blade 35a, and the intermediate section is further increased. The triangular prism of the uppermost stirring blade 35c is larger than the triangular prism of the stirring blade 35b.

As a result, the slope 351 that stirs the material becomes large, and a large amount of the material is made to flow. Therefore, the flow rate inward flow f4 formed by the outer stirring means 3 becomes large. Further, the distance between the outer stirring means 3 and the inner stirring means 2 also becomes closer. Further, as shown in FIGS. 10 to 12, the flow f6 in the rotation direction by the outer stirring means 3 also causes a large amount of material to flow on the large slope 351 to increase the flow rate. Therefore, in the upper part of the kneading container 4, the pressure of the high-pressure zone 1 formed by colliding with the outward flow f2 by the inner stirring means 2 can be further increased.

According to this embodiment, in addition to the same operation and effect as those of the above-mentioned embodiment (1),
The pressure of the high-pressure zone 1 formed in the upper part of the kneading container 4 can be further increased, and the stirring efficiency can be further improved without using the straightening vane.

FIGS. 13 and 14 show an embodiment (3) of the kneading device and an embodiment of the kneading method according to the present invention.

This kneading device 300 is used in the embodiment (1).
On the other hand, the rotation direction switching means 55 is added to the outer stirring means 3.

The rotation direction switching means 55 is the outer stirring means 3
The same rotation direction as the rotation direction of the inner stirring means 2,
It is possible to switch to reverse rotation. Specifically, the switching of the rotation direction of the outer stirring means 3 is transmitted to the drive unit 52 by a manual switch, or a command programmed by a computer is output to the drive unit 52.

The stirring blade 35 of the outer stirring means 3 is
Two inclined surfaces 351 and 35 inclined with respect to both the rotational direction of the inner stirring means 2 and the rotational direction of the same.
2 is a triangular prism-shaped member, and the agitating blade 35 has a slope 351 and a slope 352 that have the same shape as left and right symmetry, but the invention is not limited to left and right symmetry, and the optimum slope for the material to be kneaded and the kneading method. The angles and shapes of 351 and 352 can be selected.

FIG. 14 is a flow chart showing an operating method of the kneading device 300, showing a control method relating to the rotation direction of the outer stirring means 3. Conventionally, as shown in the embodiment (1), the outer stirring means 3 is rotated in the opposite direction to the inner stirring means 2 for kneading (when R1 is left rotation, R2 is right rotation). , The first step 1
In (S1), the outer stirring means 3 is rotated in the same direction as the inner stirring means 2 (both R1 and R2 are rotated left). By doing so, the material M is dragged by the rotation of the outer stirring means 3, and the entire material can be rotated at a higher speed than when the outer stirring means 3 is rotated in the opposite direction. That is, the velocity of the flow f5 shown in the embodiment (1) becomes high.

This state is continued for the set time t1 to stabilize the flow of the material M. Then, step 2 (S
If it is determined in 2) that the set time t1 has passed, step 3
In (S3), the outer stirring means 3 is rotated in the reverse direction. However, the outer stirring means 3 does not instantly rotate in the opposite direction from the rotation in the same direction, but rather stops once and then rotates in the opposite direction. The speed at which the rotation in the same direction is changed to the rotation in the reverse direction is a speed at which the speed can be changed as quickly as possible according to various factors such as the capacity of the kneading device 300, the capacity of the driving unit 52, the stirring resistance of the material, and the strength of the screw. Is set. This is because if the speed is set higher than the limit speed, failure may occur in each part.

In this way, by shifting the rotation in the same direction to the rotation in the opposite direction, the flow f6 opposed to the material rotating at a high speed by the outer stirring means 3 or the stirring blades 35.
The collision (described in the embodiment (1)) can be caused to collide, and the pressure p of the high pressure zone 1 due to the collision can be made higher than the conventional pressure. As a result, the kneading is performed more closely than in the conventional case, and the stirring efficiency can be improved.

This reverse rotation state is continued for the set time t2, and if it is determined in step 4 (S4) that the set time t2 has passed, the process proceeds to step 5 (S5). here,
It is judged whether the pattern of the operation of the same direction rotation and the operation of the opposite direction rotation is repeated n times. The number of repetitions of the operation of the same-direction rotation and the operation of the opposite-direction rotation is selected an optimum number of times depending on the property of the material M, the quality level required for the product, the capacity of the kneading device 300, and the like.

By rotating the outer stirring means 3 in the same direction or in the opposite direction, it is possible to prevent the material from adhering to the outer stirring means 3, that is, the stirring blade 35, and to eliminate co-rotation due to the material M adhering. The materials behind the stirring blades 35 can be allowed to participate in the kneading to improve the stirring efficiency. Also, the stirring blade 3
Since 5 is lightened, the load on the drive unit can be reduced and the power consumption can be reduced. After the stirring is completed, the stirring blade 35
Since the adhesion of the material M to the material is small, it is easy to clean the material before adding the next material and kneading.

According to this embodiment, the outer stirring means 3
Can be switched between rotation in the same direction as the inner stirring means 2 and rotation in the opposite direction. The flow speed of the material M is increased by the rotation in the same direction, and the rotation of the material in the same direction reverses the rotation of the outer stirring means 3 and the material. Since the relative speed with M is increased,
The pressure p of the high-pressure zone 1 due to the collision of the material M can be made higher, and the stirring efficiency can be improved.

Further, as shown in the embodiment (1),
Since the high pressure zone 1 maintains a high pressure even in the upper part of the kneading container 4, the effect of switching the rotation direction of the outer stirring means 3 becomes greater.

Further, by rotating the outer stirring means 3 in the same direction and in the opposite direction, it is possible to prevent the material from adhering to the outer stirring means 3, that is, the stirring blades 35, and improve the stirring efficiency. Further, after the stirring is completed, the amount of the material M attached to the stirring blade 35 is small, so that the cleaning can be easily performed before the next material is charged and kneaded.

Further, the operating state in which the flow speed of the material M is increased by rotation in the same direction and the operating state in which the relative speed between the outer stirring means 3 and the material M is increased by switching to the reverse rotation are repeated. Therefore, the optimum number of repetitions can be selected depending on the properties of the material M, the quality level required for the product, the capacity of the kneading device 300, and the like.

In this kneading device 300, a rectifying plate as disclosed in the conventional Japanese Patent No. 3001387 is arranged so as to rotate between the outer stirring means 3 and the inner stirring means 2 in the same manner as the outer stirring means 3. It is also possible to fix and provide to the rotating shaft 32. As a result, even in the kneading device provided with the current plate, the flow of the material M can be further promoted by changing the rotation direction of the material.

The kneading method shown in this embodiment can also be applied to a conventional kneading device having a constant screw radius. Thereby, as described above, the stirring efficiency of the conventional kneading device can be improved.

In addition to the above-described embodiments, the inner stirring means 2 for causing the material M to flow as described above,
The outer stirring means 3 may have a different blade shape.

Further, although each of the embodiments has been described as a kneading device suitable for producing concrete, the kneading device is not limited to this and can be applied to other various materials such as kneading of garbage. Is.

[0074]

As described above, in the kneading device according to claim 1 of the present invention, the high pressure zone of the material formed by the screw as the inner stirring means and the outer stirring means has a radius increasing from the lower part to the upper part. Since the high pressure is maintained even in the upper part of the kneading container by the screw, there is an effect that the stirring efficiency can be improved without using a rectifying plate.

Further, in the kneading method according to the eighth aspect of the present invention, the operation of the outer stirring means is switched from the operation in the same direction as the inner stirring means to the operation in the reverse direction, and the flow speed of the material is increased by the rotation in the same direction. After that, the relative speed between the outer stirring means and the material is increased by switching from the same-direction rotation to the opposite-direction rotation, so that the pressure in the high pressure zone due to the collision of the material can be made high and the stirring efficiency is improved. The effect is that it becomes possible.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment (1) of a kneading device according to the present invention.

FIG. 2 is a front sectional view showing an embodiment (1) of a kneading device according to the present invention.

FIG. 3 is a front sectional view showing the operation of the embodiment (1) of the kneading device according to the present invention.

4 is a sectional view taken along line XX of FIG.

5 is a cross-sectional view taken along line YY of FIG.

FIG. 6 is a sectional view taken along line ZZ in FIG.

FIG. 7 is a perspective view showing an embodiment (2) of the kneading device according to the present invention.

FIG. 8 is a front sectional view showing an embodiment (2) of the kneading device according to the present invention.

FIG. 9 is a front sectional view showing the action of the embodiment (2) of the kneading device according to the present invention.

10 is a cross-sectional view taken along line X'-X 'of FIG.

11 is a cross-sectional view taken along the line Y'-Y 'of FIG.

12 is a cross-sectional view taken along line Z'-Z 'of FIG.

FIG. 13: Embodiment (3) of the kneading device according to the present invention
It is a front sectional view showing an embodiment of a kneading method.

FIG. 14 is an embodiment (3) of the kneading device according to the present invention.
3 is a flowchart showing an embodiment of a kneading method.

[Explanation of symbols]

1 high pressure zone 2 Inside stirring means 3 Outside stirring means 4 kneading container 5 Drive means 22 rotation axis 23 blade 24 screws 25 Screw outer diameter part 32 rotation axis 33 arms 34 Support member 35 Stirring blade 36 flange 41 Upper half 42 Lower half 44 shaft hole 43 Lid 45 Material input section 46 hoppers 47 outlet 48 gates 49 Air cylinder 51 Drive 52 Drive 53 gears 54 gears 55 Rotation direction switching means 100 kneading equipment 200 kneading machine 300 kneading machine 351 slope 352 slope f1, f2, f3 flow f4, f5, f6 flow R1, R2 rotation direction r1, r2 radius θ1, θ2 angle

[Procedure amendment]

[Submission date] November 29, 2001 (2001.11.
29)

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

[Figure 3]

[Figure 4]

[Figure 5]

[Figure 6]

[Figure 7]

[Figure 8]

[Figure 10]

[Figure 9]

FIG. 11

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FIG. 14

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B28C 5/16 B28C 5/16 (72) Inventor Toshihiro Okada 6-5-30 Akasaka, Minato-ku, Tokyo Kashima Construction Stock Company (72) Inventor Takao Inoue 1-1-5 Moto Akasaka, Minato-ku, Tokyo Fujiin Villa Kajima Mechatro Engineering Co. Ltd. Company (72) Inventor Yuzo Otani 7-5-2 Higashi Narashino, Narashino City, Chiba Prefecture F-term in Ohira Western Kiko Co., Ltd. (reference) 4G056 AA07 CC13 CC17 4G078 AA13 AB02 BA05 BA07 CA01 CA05 CA12 CA17 DA03 DA09 DA28 DB03

Claims (9)

[Claims] 1. A kneading container provided with a lower half portion having an inverted truncated cone shape or a semi-spindle shape, into which a material is charged, and an inner stirring means for rotating the material at the center of the kneading container to flow the material outside and above the kneading container. In the kneading device provided with an outer stirring means that rotates along the inner wall of the kneading vessel and causes the material to flow inside the kneading vessel, the inner stirring means is equipped with a screw whose radius increases from the lower part to the upper part. Kneading equipment. 2. The kneading apparatus according to claim 1, wherein an angle formed by a line connecting the outer diameter portions of the screw and the horizontal line is equal to or larger than the inclination angle of the lower half of the kneading container and smaller than 90 degrees. A kneading device characterized in that 3. The kneading apparatus according to claim 1 or 2, wherein the outer stirring means causes the material to flow into the kneading container in a part of the height direction of the kneading container and causes a plurality of stirring along the inner wall of the kneading container. A kneading device comprising blades, the stirring blades being provided at different heights of the kneading container and at different circumferential positions of the kneading container. 4. The kneading device according to claim 3, wherein the stirring blades are provided at substantially equal intervals in the circumferential direction. 5. The kneading apparatus according to claim 3 or 4, wherein a flow capacity of the stirring blade is increased as the upper stirring blade of the plurality of stirring blades is provided. 6. The kneading apparatus according to any one of claims 1 to 5, wherein the outer stirring means is provided with two so that the material can flow into the kneading container by rotating in the same direction as the inner stirring means and rotating in the opposite direction. A kneading device having a slope. 7. The kneading apparatus according to any one of claims 1 to 6, further comprising a rotation direction switching means capable of switching the rotation direction of the outer stirring means to the same rotation as the inner stirring means and to the opposite rotation. A kneading device characterized by: 8. The kneading method for a kneading device according to claim 1, wherein the outer stirring means is rotated in the same direction as the inner stirring means for a predetermined time and then the outer stirring means is rotated in the opposite direction. A kneading method characterized by rotating for a time. 9. The kneading method according to claim 8, wherein the switching of the rotation direction of the outer stirring means is repeated a plurality of times.