JPH11114951A - Feeding agitator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the foreign sound and vibration, which are developed by raw materials entangled by the clearance between an agitator and the inner wall of a feeding hopper and, at the same time, improve the agitating effect of the agitator by a method wherein a plurality of projecting parts extending near the inner wall of the hopper are provided in the blades of an agitator. SOLUTION: In the wall part of a feeding hopper 1, a rotary shaft 6, which is rotatingly driven with a motor, is horizontally protrusively provided. To the tip part of the rotary shaft 6, a forwardly directed channel-like agitator 7 is fixed. On both the blades 7a of the agitator 7, columnar projecting parts 8 extending near the inner wall of a feeding hopper 1 are provided alternately. Further, stock laminarly sticking to the clearance position 9 between the blades 7a of the agitator 7 and the inner wall of the feeding hopper 1 can be scrapped off with the projecting parts 8. Furthermore, by making the dimension (a) between the blades 7a of the agitator 7, the agitator 7 rotates smoothly even when granular matters are entangled by the clearance portion 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stirring agitator for a feeder, and more particularly, to a stirring agitator for a feeder for processing a raw material in which powder and granular materials are mixed.

[0002]

2. Description of the Related Art Conventionally, a feeder for quantitatively transporting a raw material to a hopper or the like is provided above a hopper or the like of an extruder. A feeder hopper is attached to an upper portion of the feeder, and an agitator for stirring the raw material and supplying the feeder to the feeder, that is, a feeder stirring agitator is rotatably provided inside the feeder hopper.

FIGS. 4A and 4B are schematic diagrams of a conventional stirring agitator for a feeder, wherein FIG. 4A is a plan view and FIG.
FIG. 7 is a sectional view taken along line BB of FIG.

In FIG. 4, reference numeral 41 denotes a feeder hopper.
2 is a material supply port 43 which can be opened and closed by the hopper 41.
Has a circular arc surface at its lower end, and has a material discharge port 44 at its lower end surface.
Is provided. A feeder 45 such as a screw type or a belt type is attached to a lower portion of the circular arc surface, and communicates with the raw material discharge port 44. The feeder hopper 4
A rotating shaft 4 driven and rotated by a motor is
6 is provided so as to protrude horizontally, and a U-shaped agitator 47 is fixed to a distal end portion thereof. The agitator 4
Reference numeral 7 denotes a flat plate or a round bar, which rotates while having a gap 49 of 2 to 5 mm between the inner wall of the feeder hopper 41 and the two blades 47a of the agitator 47, and stirs the material in the feeder hopper 41. .

[0005] That is, a plurality of raw materials such as resin and additives put into the feeder hopper 41 are uniformly stirred by an agitator 47 rotating in the feeder hopper 41, and then quantitatively analyzed by a feeder # 45 provided at a lower portion. To the extruder.

[0006]

A conventional stirring agitator for a feeder has the following problems because it is configured as described above. That is, when processing a raw material in which powder and particulate matter are mixed, the particulate matter may be caught in the gap between the agitator and the inner wall of the feeder hopper, causing abnormal noise and vibration. Further, since the raw material (mainly powder in the raw material) in the gap between the agitator and the inner wall of the feeder hopper adheres in a layer with the thickness of the gap, the stirring effect may be deteriorated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and in a stirring agitator for a feeder, an abnormal noise generated when a raw material is caught in a gap between an agitator and an inner wall of a feeder hopper. Another object of the present invention is to improve the stirring effect while reducing vibration and vibration.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION A stirring agitator for a feeder according to the present invention is a stirring agitator for a feeder for processing a raw material in which powder and granular materials are mixed. In this case, the agitator blade is provided with a plurality of protrusions extending to near the inner wall of the hopper.

It is preferable that the rotating shaft of the agitator is provided horizontally on the wall of the hopper, and a U-shaped agitator is fixed forward to the front end of the rotating shaft.

The rotating shaft of the agitator is provided vertically on the upper part of a U-shaped feeder hopper with a cross section facing upward,
It is preferable that a U-shaped agitator is fixed upward to the tip of the rotating shaft.

It is preferable that the projections are provided alternately on both blades of the agitator.

[0012]

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

FIG. 1 is a schematic structural view of a stirring agitator for a feeder according to the present invention, wherein FIG. 1 (a) is a plan view and FIG. 1 (b) is a sectional view taken along line AA of FIG.

In FIG. 1, reference numeral 1 denotes a feeder hopper, and an upper portion of the hopper 1 is a raw material supply port 3 which can be opened and closed by a lid 2, and a lower portion of the hopper 1 is an arcuate surface. The lower end face is provided with a raw material discharge port 4. A feeder 5 of a screw type, a belt type, or the like is attached to a lower portion of the arc surface.
Has been communicated with. On the wall of the feeder hopper 1,
A rotating shaft 6 that is driven to rotate by a motor is provided so as to protrude horizontally, and a U-shaped agitator 7 is fixed forward to a front end portion thereof. The agitator 7 is formed of a flat plate or a round bar, and a plurality of columnar projections 8 extending to near the inner wall of the feeder hopper 1 are provided alternately on both blades 7a. The length of the projection 8 is preferably 10 to 20 mm.

That is, a plurality of raw materials such as resin and additives put into the feeder hopper 1
After being uniformly stirred by the agitator 7 rotating in the inside, it is quantitatively conveyed to the extruder by the filter # 5 provided at the lower part.

At this time, the projections 8 provided on both blades 7a of the agitator 7 can scrape off the raw material adhering as a layer to the gap 9 between the blades 7a of the agitator 7 and the inner wall of the feeder hopper 1. . Further, by providing the projections 8 alternately on both the blades 7 a of the agitator 7, the raw material adhering to the inner wall of the feeder hopper 1 can be scraped evenly. In addition, since the dimension α between the blades 7a of the agitator 7 is reduced and the gap 9 is provided between the blade 7a of the agitator 7 and the inner wall of the feeder hopper 1, the particulate matter is caught in the gap 9. Even in rare cases, the agitator 7 rotates smoothly, and the generation of abnormal noise and vibration is reduced.

As another embodiment, as shown in FIG. 2, the shape of the agitator 27 fixed to the rotating shaft 26 protruding from the wall of the feeder hopper 21 may be a crank shape. In addition, as shown in FIG.
May have a U-shape in section, and a U-shape agitator 37 may be provided inside the rotatable shaft 36 so as to be rotatable by the rotation shaft 36. In each case, agitator 2
The plurality of projections 28,
38 is provided near the feeder hoppers 21 and 31.

[0018]

Since the present invention is configured as described above, the following effects can be obtained. That is,
Due to the projections provided on the agitator blades, sufficient agitation can be obtained without the raw material adhering to the inner wall of the feeder hopper. In addition, the size between the blades of both agitators is reduced, and a gap is provided between the blades of the agitator and the inner wall of the feeder hopper, so that even if particulate matter is caught in the gap, the agitator rotates smoothly. The occurrence of abnormal noise and vibration is reduced.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a stirring agitator for a feeder according to the present invention, wherein (a) is a plan view and (b) is A- of (a).
FIG. 3 is a sectional view taken along line A.

FIG. 2 is a plan view showing a feeder stirring agitator of another embodiment.

FIG. 3 is a front view showing a feeder stirring agitator of another embodiment.

FIG. 4 is a schematic configuration diagram of a conventional stirring agitator for a feeder, where (a) is a plan view and (b) is a cross-sectional view taken along line BB of (a).

[Explanation of symbols]

 Reference Signs List 1 feeder hopper 2 lid 3 raw material supply port 4 raw material discharge port 5 feeder 6,26,36,46 rotating shaft 7,27,37,47 agitator 7a, 27a, 37a, 47a blade 8,28,38 projection 9 gap

Claims (4)

[Claims] A stirring agitator for a feeder for processing a raw material in which powder and granules are mixed, wherein the agitator (7,
27, 37) and a feeder hopper (1, 21, 3) in which agitators (7, 27, 37) are rotatably built.
1), and the hoppers (1, 2) are attached to the blades (7a, 27a, 37a) of the agitator (7, 27, 37).
(1,31) protruding portion (8,28,3) extending to near the inner wall
8) A stirring agitator for a feeder, wherein a plurality of the stirring agitators are provided. 2. A rotary shaft (6, 26) of the agitator (7, 27) is provided horizontally on a wall of the hopper (1, 21), and is provided at a tip end of the rotary shaft (6, 26). 2. A stirring agitator for a feeder according to claim 1, wherein a U-shaped agitator (7, 27) is fixed forward. 3. A rotating shaft (3) of said agitator (37).
6) is provided vertically on the upper part of a U-shaped feeder hopper (31) whose section is directed upward, and the rotation shaft (36)
2. A stirring agitator for a feeder according to claim 1, wherein a U-shaped agitator (37) is fixed upward at a tip end of the agitator. 4. The agitator (7, 37) according to claim 1, wherein said projections (8, 38) are provided alternately on both blades (7a, 37a) of said agitator (7, 37). Stirring agitator for feeder.