JPS6218260Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous mixer that introduces and mixes materials from one end of a mixing cylinder and continuously sends them out from the other end.

Conventionally, as this type of continuous mixer, the one shown in FIG. 1 is known. To explain the figures, numeral 1 is a mixing cylinder, 2 is a stirring blade, and 3 is a motor for rotating the stirring blade 2. Mixing cylinder 1
is usually installed substantially horizontally, and a supply port 4 for introducing the material to be mixed (hereinafter referred to as raw material) is provided at the top near one end. Furthermore, a discharge port 5 is provided at the lower part of the other end of the mixing cylinder 1 .

The stirring blade 2 is arranged approximately coaxially with the mixing cylinder 1 inside the mixing cylinder 1, and is used in the mixer A shown in this figure.
In this case, a ribbon-type stirring blade is used.
One end of the stirring blade 2 is fixed to one end of a shaft 6 that is disposed to pass through one end of the mixing cylinder 1 .
The shaft 6 is rotatably supported by a bearing 7. A motor 3 for rotationally driving the coaxial shaft 6 is connected to the other end of the shaft 6 .

The mixer A configured as described above has a motor 3
The raw material is introduced from the supply port 4 while rotating the stirring blade 2 through the shaft 6, and while the raw material is mixed by the stirring blade 2 inside the mixing cylinder 1, it is transferred to the delivery port 5.
The mixed mixture is sent out from the outlet 5.

By the way, in the conventional mixer A described above, since the supply port 4 is provided outside the stirring blade above one end of the mixing cylinder 1, the raw material sent from the supply port 4 is controlled by the stirring blade 2 that rotates during mixing. Part of the supply port 4
It rebounds towards the supply port 4 and grows attached to the inner surface of the supply port 4. For this reason, the inner diameter of the supply port 4 is gradually narrowed, resulting in the problem that a constant amount of raw material cannot be supplied. Further, since the vicinity of the supply port 4 at one end of the mixing cylinder 1 cannot exhibit an effective mixing effect, it is inevitable that the length of the mixing cylinder 1 becomes long in order to obtain a necessary and sufficient mixing ratio.

This invention was made in view of the above circumstances,
It is an object of the present invention to provide a continuous mixer that can always supply a constant amount of raw materials and that can exert an effective mixing action over the entire length of a mixing cylinder.

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

FIG. 2 is a diagram showing an embodiment of the present invention.
In the figure, numeral 10 is a mixing cylinder, and 11 is a stirring and mixing member. One end of the mixing cylinder 10 is attached to the support 1
It is fixed to 2. Furthermore, a delivery port 13 is provided at the lower side of the other end of the mixing cylinder 10 . The support body 12 has a through hole 1 along the axis of the mixing cylinder 10.
2a is formed. In this through hole 12a,
A hollow shaft 14 formed with a diameter smaller than that of the mixing cylinder 10 is
It is inserted through the mixing cylinder 10 with its axis aligned. This hollow shaft 14 is rotatably supported by bearings 15, 15 attached to the support body 12.
Further, the stirring and mixing member 11 is coaxially fixed to one end of the hollow shaft 14.

Furthermore, a gear 1 is provided on the outer peripheral surface of the hollow part of the hollow shaft 14.
6 are provided coaxially. This gear 16 is
It meshes with a gear 18 fixed to the shaft 17, and the gear 18 is further connected to a motor 19 via the shaft 17.

Based on the above configuration, the hollow shaft 14 has gears 16,
It is rotated by a motor 19 via a motor 18, thereby rotating the stirring and mixing member 11.

Further, inside the hollow shaft 14, a supply cylinder 20 is provided.
is inserted. In this case, the outer diameter of the supply tube 20 is smaller than the inner diameter of the hollow shaft 14, and the outer surface of the supply tube 20 and the inner surface of the hollow shaft 14 are spaced apart from each other. The supply cylinder 20 is the mixing cylinder 1.
0 is supported by a support device (not shown). On the other hand, the end of the supply cylinder 20 located inside the mixing cylinder 10 is connected to the stirring mixing member 11.
The mixing cylinder 10 is opened toward the axial center C, and the raw material is fed into the mixing cylinder 10 through the supply cylinder 20.

Further, as shown in FIGS. 2 and 3, the stirring and mixing member 11 includes a spiral rod 11a that is triangular in shape when viewed from the axial direction (side surface), and is provided at each bent portion of the spiral rod 11a. The stirring fins 11b... Therefore, the axial center C of this stirring/mixing member 11 is hollow without any obstruction in the axial direction. As a result, the supply cylinder 20 has a structure in which it opens into the hollow shaft center C of the stirring and mixing member 11 inside the mixing cylinder 10.

In addition, in the said structure, the gears 16 and 18, the shaft 17, and the motor 19 constitute the drive means 21.

Next, the operation of the mixer B configured as described above will be explained.

When the hollow shaft 14 is rotated by the motor 19, the stirring and mixing member 11 fixed to the hollow shaft 14 is rotated. In this state, the mixing cylinder 1 is passed through the supply cylinder 20.
0, the stirring and mixing member 11
The raw materials are mixed while being sent toward the outlet 13. Here, as described above, since the supply cylinder 20 opens into the hollow shaft center C of the stirring and mixing member 11, there are no obstacles when the raw material is introduced into the mixing cylinder 10, and therefore, the raw material is fed into the mixing cylinder 10. The raw material is not bounced back toward the supply cylinder 20, and the raw material is smoothly supplied. Furthermore, the stirring and mixing member 11 is
Since it functions to move the raw material toward the delivery port 13, the bouncing of the raw material toward the supply tube 20 can be suppressed to a very small level. Further, since the mixing cylinder 10 surrounding the stirring and mixing member 11 does not have an open part such as a supply port, an effective mixing action can be exerted over the entire length of the stirring and mixing member 11, and therefore, it is possible to exert an effective mixing action over the entire length of the stirring and mixing member 11. A sufficient mixing ratio can be obtained even if the length of the mixing cylinder is shortened compared to the mixer shown in FIG. In the above embodiment, the rotation of the hollow shaft 14 is driven by the gears 16, 18,
Although the shaft 17 and the motor 19 are used in this embodiment, the rotation may be directly performed by a hollow hydraulic motor or an electric motor. In this way, the outer diameter of the mixer can be reduced, and it can be applied to technical fields such as pipe lining where the mixer needs to be moved inside the pipe, and the radius of curvature at the bent part of the pipe can be reduced. Movement is possible even when .

As explained above, the continuous mixer of the present invention has a hollow shaft coaxially extending through one end of the mixing cylinder, a spiral rod having a triangular side surface, and each bent portion of the spiral rod. A stirring and mixing member with a stirring fin attached thereto and having a hollow shaft center is fixed to the hollow shaft in the mixing cylinder so that the hollow part of the hollow shaft and the hollow shaft center of the stirring and mixing member communicate with each other. A driving means for rotationally driving the hollow shaft is provided in the hollow shaft, and a supply tube is arranged so as to be inserted through the hollow shaft and open at the center of the hollow shaft of the stirring and mixing member, Since the material to be mixed is introduced into the mixing cylinder through the cylinder, the raw materials supplied into the mixing cylinder are smoothly mixed and conveyed without bouncing back toward the supply cylinder. Since this prevents the cylinder from clogging, a constant amount of raw material can always be fed into the mixing cylinder. In addition, since the raw materials are supplied through the supply cylinder along the axial direction of the mixing cylinder, the outer diameter of the mixer can be reduced, and furthermore, effective mixing can be performed over the entire length of the mixing cylinder. The length of the mixing cylinder can be shortened, and therefore the mixer can be made smaller.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a conventional mixer, Fig. 2 is a sectional view of an embodiment of the present invention, and Fig. 3 is a -
It is a sectional view taken along the line. 10... Mixing cylinder, 11... Stirring mixing member, 11
a... Spiral rod, 11b... Stirring fin, 14...
Hollow shaft, 16, 18...gear, 19...motor,
20... Supply cylinder, C... Hollow shaft center part.

Claims (1)

[Scope of Claim for Utility Model Registration] A hollow shaft is provided coaxially through one end of the mixing cylinder, the spiral rod has a triangular side surface, and stirring fins are attached to each bent part of the spiral rod. A stirring mixing member having a hollow shaft center portion is fixed to a hollow shaft in the mixing cylinder such that the hollow portion of the hollow shaft and the hollow shaft center portion of the stirring mixing member are in communication with each other, and A driving means for rotationally driving the shaft is provided, and a supply cylinder is inserted through the hollow shaft to open at the center of the hollow shaft of the stirring and mixing member, and the supply cylinder is inserted into the mixing cylinder through the supply cylinder. A continuous mixer that introduces materials to be mixed.