JPH042298B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a material discharging device attached to a continuous processing device that performs continuous processing such as mixing and stirring on materials such as viscous bodies and powders.

<Prior Art> It is important to correctly control the amount of material discharged in continuous processing equipment.

Conventionally, a method has been known in which, for example, a valve is provided at the discharge port and its opening degree is adjusted, but this method has the drawback that the discharge amount fluctuates depending on the internal extrusion pressure.

Furthermore, as shown in Utility Model Application No. 61-120509, a method of adjusting the discharge amount using a gear pump has been known, but with highly viscous materials such as rubber and plastic, the gear teeth become clogged with the material. Therefore, it cannot be applied.

<Problems to be Solved by the Invention> Generally, extruding high viscosity materials such as rubber and plastic requires strong vertebral force, and therefore the rotor shaft is also subjected to strong thrust. Therefore, it was necessary to take measures against thrust, such as installing a large thrust bearing. In addition, every time the processing material is changed or before the machine is stopped for a long time after processing work, it is necessary to clean the residue left in every corner of the machine, so it is necessary to clean the residue left in every corner of the machine. In particular, the gasket used to seal the gap between the rotating part and the fixed wall made disassembly and cleaning difficult.

Therefore, the present invention provides a discharge device in which the discharge amount can be accurately controlled regardless of changes in the viscosity of the material or the internal pressure of the processing device, and which has a very simple structure since neither thrust bearings nor packing are required. This is what we are trying to provide.

<Means for Solving the Problems> The ejection device of the present invention will be explained with reference to the embodiment shown in FIG.

A continuous processing device such as a continuous kneading machine has a cylindrical container 1, and a material outlet 2 is provided below the rear end thereof. The container 3 of this discharge device is, for example, in the shape of a cylinder with two parallel axes, and a material inlet 4 is provided above the center in the axial direction and is connected to the material outlet 2 of the discharge device. The apparatus has one discharge port 5 and a second discharge port 6, the axis of which is parallel to the axial direction of the continuous processing apparatus. Two rotors 7 and 8 provided in this container 3 are supported at both ends by radial ball bearings 9, 10, 11, and 12, and are engaged with each other by gears 13 and 14 so as to rotate in different directions. It is driven in the direction of the arrow by a motor (not shown). The rotors 7 and 8 are provided with feed screws 15, 16, 17, and 18 that are symmetrical on the left and right, and that engage the two rotors with each other, except for the portions that correspond to the material introduction port 3 and the discharge ports 5 and 6. has been done.

<Function> Since the rotor shaft is at least biaxial, even if the material is highly viscous, it can be reliably fed out without clogging the thread troughs. In addition, thrust is generated in the rotor when feeding the material, but the thrust is canceled out by the symmetrical feed screw, so
Since a thrust bearing is not required and the material falls from the discharge ports on both the left and right ends, there is no need to provide a sealing device with the bearing, and the shaft support has a very simple structure with only radial bearings.

<Example> Fig. 1 shows a vertical cross-sectional view of an example of the present invention, and Fig.
The figure shows a sectional view taken along the line AA in FIG.

The continuous kneading machine 1 is a horizontal twin-screw rotor type,
A material input port (not shown) is provided at the front, and a material outlet 2 is provided at the rear end. A material introduction port 4 and material discharge ports 5 and 6 are formed in the container 3 of the discharge device. These inlet port 4 and outlet ports 5, 6 are rectangular, and the width thereof is approximately equal to the width length of the cross-sectional shape of the container 3, as shown in FIG. Rotor 7, 8
The feed screws 15, 16, 17, and 18 formed in the figure are trapezoidal screws each having two threads. There is almost no gap between the inner peripheral surface of the container and the thread diameter. Both ends of the rotors 7, 8 are supported only by radial ball bearings 9, 10, 11, 12, and no sealing gaskets are provided.

The rotor shaft 7 is driven by a variable speed motor or via a variable transmission, and if necessary, a rotation speed sensor such as a tachogenerator is attached to automatically control the rotation speed to a desired speed. In that case, a setting device can be provided for specifying the desired rotational speed.

<Effects of the Invention> According to the present invention, since the material is discharged by the rotation of the feed screws that mesh with each other, the discharge amount can be accurately controlled regardless of changes in the viscosity of the material or the internal pressure of the processing device. In addition, since the material is sent out symmetrically from the center inlet to the left and right discharge ports, the thrust forces cancel each other out, eliminating the need for thrust bearings at both ends and packing. Very simple and easy to disassemble and clean.

Furthermore, according to the present invention, since the axial directions of the continuous processing device and the discharge device are parallel, the installation area does not increase due to the addition of the discharge device, and the overall size is reduced. In addition, since the outlet of the continuous processing device and the inlet of the discharge device are directly connected, no material remains in the intermediate path and there is no waste of material.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line B-B in FIG. 1... Continuous processing device, 2... Material outlet, 3...
...Container of the discharge device, 4...Material introduction port, 5...First material discharge port, 6...Second material discharge port, 7,
8... Rotor, 9, 10, 11, 12... Bearing,
15, 16, 17, 18...Feed screw.

Claims (1)

[Scope of Claims] 1. A device attached to a continuous processing device that continuously processes materials such as viscous bodies and powders, such as mixing and stirring, which is substantially parallel to the longitudinal direction of the continuous processing device. With parallel axes, above the axial center,
A container provided with a material inlet port communicating with an outlet provided at the end of the continuous processing device, and provided with first and second discharge ports below both ends, and supported by bearings at both ends of the container. At least two rotating shafts that are parallel to each other, a means for rotationally driving the rotating shafts, and the rotating shafts mesh with each other to transfer the material from the material introduction port to the first and second discharge ports. A discharge device having a feed screw which is formed in the same direction and has a structure leading to the first discharge port and a structure leading to the second discharge port being formed symmetrically to each other. 2. Claim 1, characterized in that the widths of the material inlet and the first and second outlets are approximately equal to the width of the cross-sectional shape of the container.
Discharge device as described in section.