JP2003154248A - Kneading apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small, inexpensive and new kneading apparatus for defibrating and kneading a material without using another defibrating unit. SOLUTION: This kneading apparatus has a rotary agitating body (3) for agitating the material in a kneading tank (2) and a fixed defibrating body (7) disposed on the surface of the inner wall of the tank (2) and a rotary defibrating body (6) fit to a rotary shaft (4) of the body (3) so that the material is defibrated in the tank (2) by rotating the body (6) with respect to the body (7).

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The invention of the present application relates to a kneading apparatus for kneading various materials as well as defibrating them.

[0002]

2. Description of the Related Art Conventionally, as a kneading device for various materials, for example, as illustrated in FIG. 8, the material charged from the material charging device (1) is rotated in a kneading tank (2) by a rotary stirring member (3). It is known that the material is kneaded by stirring and dissolving in (1). The rotary stirrer (3) in FIG. 8 is a stirring blade attached to a rotary shaft (4) rotated by a motor (5).

In this kneading device, when a solid material enters the kneading tank (2), the tank discharge port (21) is closed and the material cannot be discharged, or a material having a nonstandard size is mixed. In order to prevent product quality defects from occurring, the defibrating device (a) is often used, and the slurry-like material from the kneading tank (2) is defibrated by the defibrating device (a) and finely crushed. , Kneading it with a circulation pipe (a) (2)
It is often done again.

FIG. 9 is an external view showing a specific example of this defibrating device (a), and FIG. 10 is a defibrating device (a) of FIG.
3 is a cross-sectional view of the defibration mechanism section in FIG. The defibration mechanism section includes a stator (c) fixedly installed and a rotor (d) rotatable with respect to the stator (c).
(C) has a plurality of concentric circular tooth bodies (U '), and the rotor (D) has a plurality of concentric circular tooth bodies (D) rotatably engaged with the concentric circular tooth bodies (C') of the stator (C). ') And the concentric teeth (d') of the rotor (d) rotate with respect to the concentric teeth (c ') of the stator- (c) to defibrate the material. ing.

[0005]

However, in the kneading device in which the defibrating device (a) is introduced as described above, the defibrating device (a) is a separate body from the kneading device, and therefore both devices are naturally used. There is a problem in that it requires a vast installation space for, and is not economically preferable.

In view of the above circumstances, the invention of this application solves the problems of the prior art and defibrates and kneads materials without using a separate defibration device (a). It is an object of the present invention to provide a new kneading device that is compact, inexpensive, and capable of performing.

[0007]

Means for Solving the Problems The invention of the present application is, in order to solve the above-mentioned problems, a kneading apparatus for stirring a material by a rotary stirrer in a kneading tank. Is provided, and the rotary defibrating body is provided on the rotary shaft of the rotary stirring body, and the defibrating of the material is performed in the kneading tank by rotating the rotary defibrating body with respect to the fixed defibrating body. To provide a kneading device.

According to this kneading apparatus, since the kneading tank itself is provided with the defibrating mechanism composed of the fixed defibrating body and the rotating defibrating body, it is possible to defibrate the material as well as kneading the material in the kneading tank. It is possible to realize an excellent kneading device having both a kneading function and a defibrating function. That is, the fixed defibrating body fixed to the inner wall surface of the kneading tank and the rotary defibrating body attached to the rotary shaft of the rotary stirring body are the stator (U) of the defibrating mechanism section in the conventional defibrating apparatus (A). ) And the rotor (d) (see FIG. 10), the stirring and kneading is performed by the rotating stirring body that rotates according to the rotation of the rotating shaft, and the rotating defibrating body as the rotor that also rotates and the stator for the same. The defibration is performed by the fixed defibration body as −. Of course, it is not necessary to use a separate defibrating device as in the past, so it is smaller and cheaper than the conventional equipment in which the defibrating device and the kneading device are separate, and the fixed defibrating device is kneaded. Since the inner wall surface of the tank and the rotary defibrating body may be attached to the rotary shaft of the rotary stirring body, the structure in the kneading tank does not become too complicated.

For fixed and rotary defibration bodies,
For example, the rotating defibrating body may be arranged so as to be rotatably engaged with the fixed defibrating body, and the rotating defibrating body rotates with respect to the fixed defibrating body, thereby Grind and scrape the material in the meshing gaps between the defibrated bodies,
You will be able to more effectively and finely disintegrate by tearing.

Further, the fixed defibrating body and the rotating defibrating body may have, for example, a blade shape or a pin shape, and both defibrating bodies may have a wing shape or a pin shape, or one of the defibrating materials may have a wing shape and the other. May have a pin shape. The defibration of the material between both defibration bodies should be realized.

Of course, since the settings such as the size, interval and number of the fixed defibrating body and the rotating defibrating body directly affect the defibrating effect, it is necessary to adjust them so that a desired defibrating effect can be obtained. Is preferred. In other words, the defibration viscosity can be adjusted by changing the size and the like of the fixed defibration body and the rotating defibration body.

In the kneading apparatus of the invention of this application, since the rotary defibrating body is provided on the rotary shaft of the rotary agitating body, the rotary shaft provided with the rotary defibrating body together with the rotary agitating body has a larger number of rotary shafts than the conventional one. It will be a burden. Therefore, when the load on the rotary shaft becomes large, in order to prevent damage to the rotary shaft, rotary stirrer, rotary defibrator, motor, etc., the rotary shaft should be rotated in reverse until the load decreases, and then normal rotation again. It is preferable to carry out control.

Further, in the kneading apparatus of the invention of this application, the material defibrated by the defibrating mechanism consisting of the fixed defibrating body and the rotating defibrating body is discharged from the kneading tank and passed through a circulation pump and a circulation pipe. The load is returned to the kneading tank again, but even in this case, in order to adjust the load applied to the rotary shaft, the rotation speed of the circulation pump was reduced when the load on the rotary shaft increased, and vice versa. At this time, it is preferable to perform control to increase the rotation speed of the circulation pump.

By these controls, it is possible to maximize the kneading ability and the defibrating ability of the device, reduce the load on the device, and extend the life.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] FIG. 1 is an overall configuration diagram showing an embodiment of the invention of this application, and FIGS. 2 and 3 (a) and 3 (b) respectively show FIG. 2 is an enlarged view showing a specific example of a fixed defibrating body (7) and a rotating defibrating body (6) in FIG. 1.

In the embodiment of FIG. 1, the material charged from the material charging device (1) is stirred by the rotary stirring member (3) in the kneading tank (2) as in the conventional kneading device shown in FIG. It is kneaded by melting, and in addition to this, a fixed defibrating body (7) and a rotary defibrating body (6) are provided in the kneading tank (2).

The fixed defibrating body (7) is shown in FIGS.
As shown in (b), a plurality of strip-shaped flat plates are arranged radially around the tank discharge port (21) on the bottom surface of the inner wall of the kneading tank (2).

The rotary defibrating body (6) is shown in FIG. 2 and FIG.
As shown in (a), the lower surface of the rotary substrate (60) fixed to the rotary shaft (4) has a plurality of blade-like bodies radially arranged around the rotary shaft (4). , They are provided directly above the flat plate body of the fixed defibrating body (7) at predetermined intervals. Since the bottom surface of the inner wall of the kneading tank (2) is inclined from the left and right side walls toward the tank discharge port (21),
Corresponding to the flat plate body of the fixed defibrating body (7) provided along the inclined bottom surface, the height position of the blade-like body of the rotating defibrating body (6) is adjusted so as to maintain a predetermined interval, The lower end surface is also inclined.

That is, the fixed defibrating body (7) and the rotary defibrating body (6) are blade-type rotary stirring bodies (3) attached to the inner wall bottom surface of the kneading tank (2) and the rotating shaft (4). ) Together with the), a defibration mechanism that functions as a stator and a rotor is formed.

In this case, the motor (5) (see FIG.
Rotation of the rotating shaft (4) by the rotating substrate (6)
By rotating 0), the rotary defibrating body (6) rotates right above the fixed defibrating body (7), and the rotating defibrating body (6) and the fixed defibrating body (7) are rotated during this rotation. The material is finely disintegrated by grinding, scraping, and tearing the material in the gap. Of course, since the rotary stirring body (3) also rotates at the same time, the materials are kneaded.

[Second Embodiment] FIGS. 4A and 4B show
FIG. 3 is an enlarged view showing another specific example of the fixed defibrating body (7) and the rotating defibrating body (6), respectively.

The fixed defibrating body (7) shown in FIGS. 4 (a) and 4 (b) is separated from the tank discharge port (21) at the bottom surface of the inner wall of the kneading tank (2) in a plurality of concentric circles at predetermined intervals. And are arranged in a blade shape. Each blade is erected upward from the bottom surface of the inner wall of the kneading tank (2), that is, toward the rotary substrate (60) of the rotary defibrating body (6).

The rotational defibrating body (6) is arranged on the lower surface of the rotating substrate (60) fixed to the rotating shaft (4) with a plurality of concentric circles around the rotating shaft (4) at predetermined intervals. It is a wing-shaped body. Each vane-shaped member hangs downward from the lower surface of the rotating substrate (60), that is, toward the bottom surface of the inner wall of the kneading tank (2).

Then, the fixed defibrating body (7) and the rotary defibrating body (6) are inserted into and mesh with each other in concentric intervals. Of course, the rotating defibration body (6) as the rotor is not
Axial rotation is possible with respect to the fixed defibrating body (7). That is, the rotational defibration body (6) is in the outermost circle, the fixed defibration body (7) is in the inner circle, the rotation defibration body (6) is in the inner circle, and the innermost circle is Is the fixed defibrating body (7) (if the rotating defibrating body (6) and fixed defibrating body (7) are in order, whichever may be located on the outermost circle or the innermost circle) The rotary defibrating body (6) rotates by the rotation of the rotating shaft (4).

This allows the material to be more effectively and finely defibrated in the gap between the rotary defibrator (6) and the fixed defibrator (7) during the rotation of the rotary defibrator (6). become.

[Third Embodiment] FIGS. 5A and 5B show
FIG. 5 is an enlarged view showing still another specific example of the fixed defibrating body (7) and the rotating defibrating body (6), and the shapes are different from those in the case of FIG. 4, and both defibrating bodies are pin-shaped bodies. Has become.

The arrangement of the fixed defibrating bodies (7) and the rotating defibrating bodies (6) in the form of pins is the same as in FIG. 4, and the tank discharge is performed at the bottom of the inner wall of the kneading tank (2). Exit (2
1) is arranged concentrically around the center, and the rotating substrate (6
0) The lower surface of 0) is concentrically arranged around the rotation shaft (4), and the rotational defibrating body (6) is rotatable about its axis in a meshed state. Is defibrated at.

In the case of the blade-like body as shown in FIG. 4, it is more suitable for defibrating a hard material, and in the case of the pin-like body as shown in FIG. The material viscosity can be adjusted more easily.

[Fourth Embodiment] The fixed defibrating body (7) and the rotary defibrating body (6) have a wing-like or pin-like shape and arrangement as shown in FIGS. 4 and 5 described above. In the case of a body, for example, as shown in FIGS. 6 (a) and 6 (b), a fixed defibrating body (7) wing-shaped body / pin-shaped body and a rotary defibrating body (6) wing-shaped body -A distance (gap) in the direction orthogonal to the rotation direction of the pin-shaped body, that is, the radial direction of the concentric circle is A, the length in the direction orthogonal to the rotation direction of the blade-shaped body or the diameter of the pin-shaped body is B, within the same concentric circle It is preferable to set A, B, and C in consideration of Table 1 below, where C is the distance between the blade-shaped body and the pin-shaped body in the rotation direction.

[0030]

[Table 1]

That is, the larger A is, the more blade-shaped body
The amount of residue between the pin-shaped bodies increases and the possibility of path closure increases, and the larger B, the larger the particle size of the material,
The larger C is, the longer the time required for defibration is. On the contrary, the smaller A is, the larger the interference between the blade-shaped body and the pin-shaped body is. As the strength of the pin-shaped body decreases and the C decreases, the residue between the blade-shaped body and the pin-shaped body increases and the possibility of path closure increases. -By setting the pin-shaped body, the desired defibration effect can be obtained successfully.

[Fifth Embodiment] Now, in the embodiment of the invention of this application shown in FIG. 1 which carries out the above-mentioned kneading and defibration, from the tank discharge port (21) below the kneading tank (2). A circulation pump (8) and a circulation pipe (9) for returning and circulating the discharged material of No. 1 to the kneading tank (2) again are provided, and further, the rotation shaft load detection for detecting the load of the rotation shaft (4). A device (10), a rotary shaft control device (11) for controlling the rotation of the rotary shaft (4) according to the rotary shaft load value detected by the rotary shaft load detection device (10), and a circulation according to the rotary shaft load value. A circulation pump control device (12) for controlling the rotation of the pump (8) is provided as load control means.

In this case, in order to maximize the kneading ability and the defibrating ability of the kneading device, the rotating shaft load detecting device (10) detects the load value of the rotating shaft (4) at any time, and the rotating shaft control device. When the detected load value becomes larger than a predetermined reverse rotation start load value, (11) controls the motor (5) to rotate the rotating shaft (4) in the reverse direction, and when the predetermined reverse rotation stop load value is reached, The rotating shaft (4) is again rotated forward. On the other hand, the circulation pump control device (12) lowers the rotation speed of the circulation pump (8) when the detected load value becomes larger than a predetermined load upper limit value, and reduces the rotation speed when it becomes smaller than the load lower limit value. The control of increasing the rotation speed in (8) is performed.

Regarding the rotation speed and torque of the rotary shaft (4), the kneading capacity and the defibration capacity are improved by increasing the rotation speed. Therefore, select the rotation speed corresponding to the capacity of the motor (5). Is preferred. FIG. 7 shows the rotational speed n [rpm] and the torque T [kg- of the rotating shaft (4).
m] and power P [KW] of the motor (5), showing an example, where P = (T × n) / 974 T = necessary torque for kneading + necessary torque for defibration + α (friction loss Etc.).

Of course, the invention of this application is not limited to the above embodiments, and various aspects are possible in details.

[0036]

As described in detail above, according to the invention of the present application, it is possible to simultaneously knead and defibrate materials in the kneading tank without using a separate defibrating device, which is large in the kneading tank. Provided is a new kneading apparatus which is small in size and inexpensive, which can effectively prevent the tank outlet from being blocked and the occurrence of quality defects even when materials are charged.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram for explaining an embodiment of a kneading device of the invention of this application.

FIG. 2 is a diagram for explaining a specific example of a fixed defibrating body and a rotary defibrating body.

3 (a) and 3 (b) are different views for explaining the fixed defibrating body and the rotating defibrating body in FIG. 2, respectively.

4A and 4B are views for explaining another specific example of a fixed defibrating body and a rotating defibrating body, respectively.

5 (a) and 5 (b) are diagrams for explaining still another specific example of a fixed defibrating body and a rotary defibrating body, respectively.

6A and 6B are views for explaining an example of dimension setting of the fixed defibrating body and the rotary defibrating body in FIGS. 4 and 5, respectively.

FIG. 7 is a diagram exemplifying the relationship between the rotation speed and torque of a rotating shaft and the power of a motor.

FIG. 8 is an overall configuration diagram for explaining a conventional kneading device.

FIG. 9 is an external view illustrating a conventional defibration device.

10 (a), (b), and (c) are respectively a cross-sectional view illustrating a defibration mechanism unit in a conventional defibration device and a perspective view illustrating a stator and a rotor of the defibration mechanism unit. .

[Explanation of symbols]

1 Material input device 2 kneading tank 21 Tank outlet 3 rotating stirrer 4 rotation axes 5 motors 6 rotation defibration 60 rotating substrate 7 Fixed defibration 8 circulation pumps 9 circulation pipe 10 Rotation axis load detection device 11 Rotation axis control device 12 Circulation pump controller

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 4F201 AP08 BA01 BC02 BK18 BK34                       BK38 BK49 BK50 BK69 BQ45                       BQ52                 4G078 AA30 AB05 BA05 CA01 CA05                       CA12 CA20 DA28 DB02 DB03                       EA08 EA10

Claims (6)

[Claims] 1. A kneading apparatus for stirring a material by a rotary stirrer in a kneading tank, wherein a fixed defibrating body is provided on an inner wall surface of the kneading tank, and a rotary defibrating body is provided on a rotary shaft of the rotary stirring body. A kneading apparatus characterized in that the rotary defibrating body rotates with respect to the fixed defibrating body to defibrate the material in the kneading tank. 2. The kneading device according to claim 1, wherein the rotary defibrated body is rotatably engaged with the fixed defibrated body. 3. The kneading device according to claim 1, wherein the fixed defibrated body is a blade-shaped body or a pin-shaped body. 4. The kneading device according to claim 1, wherein the rotational defibrating body is a blade-shaped body or a pin-shaped body. 5. The kneading device according to claim 1, wherein when the load of the rotary shaft is large, the rotary shaft is rotated in the reverse direction until the load is reduced, and when the load is decreased, the rotary shaft is normally rotated again. 6. The kneading apparatus according to claim 1, wherein when the load on the rotary shaft is large, the rotation speed of the material circulation pump is reduced, and when the load on the rotation shaft is small, the rotation speed of the material circulation pump is increased.