JPH106330A - Continuous kneader - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve the miniaturization of an apparatus and the shortening of a line between a kneader and a gear pump. SOLUTION: In a continuous kneader, a rotor 5 is housed in the kneading chamber 4 formed to a housing 1 in a freely rotatable manner and the throttle device 8 adjusting the gap between the outer peripheral surface of the rotor 5 and the inner peripheral surface of the kneading chamber 4 is provided. In this case, the diverter 17 for discharging the kineading material in the kneading chamber 4 is provided to the throttle device 8 or on the upstreams side of the throttle device 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous kneader used for kneading resin, rubber and the like.

[0002]

2. Description of the Related Art As a continuous kneader, for example, Japanese Unexamined Patent Publication No.
Japanese Patent Application Laid-Open No. 39833/1991 discloses an example. And FIG.
As shown in (1), the kneaded material discharged from the continuous kneader a is supplied from a gear pump b to a pelletizer (granulator) d through a screen device c to be formed into pellets.

A device for discharging resin called a diverter (material discharging device) e is provided between the continuous kneader a and the gear pump b. This diverter
e is used to remove unmelted material during the initial test operation and impurities other than resin contained in the line. This divertor e is the diverter used during the initial test run.
e, the equipment downstream of diverter e can be protected, and if the equipment downstream of diverter e stops, discharge the material from diverter e without stopping the equipment upstream of diverter e. It can wait for a restart on the downstream side.

[0004]

In the prior art shown in FIG. 8, since the diverter e is provided in the passage between the continuous kneader a and the gear pump b, the size of the apparatus is increased.
Further, there is a problem that the distance between the continuous kneader a and the gear pump b becomes long, and the kneader outlet pressure tends to be high.

Therefore, an object of the present invention is to provide a continuous kneader which has solved the above-mentioned problems.

[0006]

In order to achieve the above object, the present invention takes the following measures. That is, a feature of the present invention is that a rotor is rotatably stored in a kneading chamber formed in a housing, and a throttle device for adjusting a gap between an outer peripheral surface of the rotor and an inner peripheral surface of the kneading chamber is provided. In the continuous kneader described above, a diverter for discharging the kneaded material in the kneading chamber to the outside is provided in the expansion device.

Alternatively, a diverter for discharging the kneaded material in the kneading chamber to the outside is provided in a housing upstream of the expansion device. According to the present invention,
Since the diverter is provided in the kneader itself, the diverter between the conventional kneader and the gear pump can be eliminated, so that the apparatus can be downsized and the length of the line can be shortened.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, a continuous kneader comprises:
The housing 1 has a material supply port 2 at one end and a material outlet 3 at the other end. In the housing 1, there is formed a kneading chamber 4 communicating the material supply port 2 and the outlet 3. A kneading rotor 5 is rotatably provided in the kneading chamber 4. This kneading rotor
5 comprises a pair of two axes arranged parallel to each other.
The rotors 5 are connected to each other by a gear at the material supply port side, and rotate in opposite directions.

The kneading chamber 4 is divided along the longitudinal direction into a first kneading chamber 6 and a second kneading chamber 7, and a squeezing device 8 is provided at the boundary. The kneading rotor 5 has a first feed portion 9 in which a portion corresponding to the material supply port 2 is formed in a spiral shape. After passing through the squeezing device 8, the helical second feed portion 11 is formed, and from there to the vicinity of the outlet, a wing-shaped second kneading portion 12 is formed. The housing 1 at a position corresponding to the second feed portion 11 includes:
Vent hole 13 is opened.

The aperture device 8 has a pair of upper and lower gate plates 14 and 15 which are fitted to the housing 1 so as to be slidable in the vertical direction. It is configured to approach or move away by an amount. The cross-sectional shape of the kneading rotor 5 at a position corresponding to the two gate plates 14 and 15 is circular. A semicircular hole is formed at the opposite end of the pair of upper and lower gate plates 14 and 15 so that the gate plates 14 and 15 are closely fitted to the outer peripheral surface of the kneading rotor 5 when the gate plates 14 and 15 come into close contact with each other. ing.

Therefore, the gap between the outer peripheral surface of the kneading rotor 5 and the inner peripheral surface of the gate plates 14 and 15 is adjusted by moving the gate plates 14 and 15 toward and away from each other, and the kneading material passing through the gap is adjusted. Flow resistance can be controlled. The aperture device 8 is provided with a diverter 17. The diverter 17 has a stopper plate 18 slidably provided on the lower gate plate 15 and a driving device 19 for moving the stopper plate 18 together with or independently of the lower gate plate 15. That is,
The lower gate plate 15 is formed with a recess 20 for communicating the inside of the first kneading chamber 6 with the outside, and the stopper plate 18 is slidably fitted in the recess 20. During normal use, the stopper plate 18 is configured to move integrally with the lower gate plate 15.

When it is desired to discharge the kneaded material in the first kneading chamber 6 to the outside, as shown in FIG.
The gap between the rotors 5 and 4 is reduced to zero, and the stopper plate 18 is moved independently of the lower gate plate 15 so that the recess 20 formed in the lower gate plate 15 To communicate with As a result, the kneading material in the first kneading chamber 6 becomes concave.
It is discharged outside through 20 and does not flow into the second kneading chamber 7.

When a plurality of aperture devices 8 are provided as described in JP-A-6-39833, it is preferable to provide a diverter in the aperture device near the material outlet. However, it may be provided in all of the plurality of aperture devices. FIGS. 3 and 4 show a diverter 17 upstream of the expansion device 8.
Is provided. That is, the discharge hole 21 is opened upward in the housing 1 near the upper gate plate 14, and the discharge hole 21 forms the diverter 17. The portion of the kneading rotor 5 corresponding to the discharge hole 21 is formed as a parallel blade or a feed blade.

When the first kneading chamber 6 is filled with the resin material by squeezing the expansion device 8, the resin material is discharged from the discharge hole 21. When the gap is opened by the expansion device 8, the resin is not filled, and the discharge hole 21 functions as a gas vent hole. For materials containing fillers or fine powder materials, etc., which are particularly required to be degassed, degassing can be performed on the upstream side of the expansion device 8 and the degassing effect can be enhanced in combination with the vent hole 13 on the downstream side. .

FIG. 5 shows a configuration in which a diverter 17 is provided on the upstream side of the expansion device 8. That is, the lower gate plate 15
A discharge hole 22 is opened downward in the adjacent housing 1, and a plug member 23 is slidably fitted in the discharge hole 22. By squeezing the squeezing device 8 and removing the plug member 23, the discharge hole 22
From the resin material. In FIG. 6, a diverter 17 is provided on the upstream side of the expansion device 8, and a discharge hole 24 is opened on the side of the housing 1. A plug member 25 is fitted into the discharge hole 24 so as to be freely inserted and removed. By configuring the resin material to be discharged to the side in this manner, the dead space on the side of the machine can be effectively used, and the maintenance space for processing the discharged resin material can be widened. Become.

FIG. 7 shows an expansion device 8 in which a kneading rotor 26 and a housing 1 are provided so as to be relatively movable in the axial direction, and a tapered portion 27 of the rotor 26 and a tapered portion 28 of the kneading chamber 4 are provided.
The diverter 17 is provided upstream of the expansion device 8. still,
The present invention is not limited to the embodiments described above.

[0017]

According to the present invention, since the diverter is incorporated in the kneading machine itself, the apparatus can be downsized and the line length can be reduced as compared with a conventional apparatus provided outside. It is.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of FIG. 1, and is a cross-sectional view showing a state where a plug plate of a diverter is removed.

FIG. 3 is a sectional view showing another embodiment of the present invention.

FIG. 4 is a cross-sectional view at the position of a discharge hole in FIG.

FIG. 5 is a cross-sectional view showing another embodiment of the present invention.

FIG. 6 is a sectional view showing another embodiment of the present invention.

FIG. 7 is a cross-sectional view showing another embodiment of the present invention.

FIG. 8 is a partial cross-sectional configuration diagram showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 5 Rotor 8 Throttling device 17 Divertor

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Koji Ueda 2-3-1, Shinhama, Araimachi, Takasago City, Hyogo Prefecture Inside Kobe Steel, Ltd. Takasago Works (72) Inventor Susumu Takara 2-chome, Araimachi, Takasago City, Hyogo Prefecture No. 1 Inside Kobe Steel, Ltd. Takasago Works (72) Inventor Yoshimitsu Tanaka 2-3-1, Shinama, Araimachi, Takasago City, Hyogo Prefecture Inside Kobe Steel, Ltd. Takasago Works (72) Inventor Shoji Yasuda Takasago City, Hyogo Prefecture 2-3-1, Shinhama, Araimachi Kobe Steel, Ltd. Takasago Works

Claims (2)

[Claims] 1. A continuous kneader in which a rotor is rotatably housed in a kneading chamber formed in a housing, and a throttle device for adjusting a gap between an outer peripheral surface of the rotor and an inner peripheral surface of the kneading chamber is provided. The continuous kneader according to claim 1, wherein a diverter for discharging the kneaded material in the kneading chamber to the outside is provided in the squeezing device. 2. A continuous kneader in which a rotor is rotatably accommodated in a kneading chamber formed in a housing, and a throttle device for adjusting a gap between an outer peripheral surface of the rotor and an inner peripheral surface of the kneading chamber is provided. 3. The continuous kneader according to claim 1, wherein a diverter for discharging the kneaded material in the kneading chamber to the outside is provided in a housing upstream of the squeezing device.