JP6921397B2 - Quantitative feeder device for granules - Google Patents

Description

The present invention relates to a quantitative feeder device for quantitatively supplying powder.

Conventionally, it is very difficult to quantitatively supply powder in a trace amount because it is affected by the physical characteristics of the powder, for example, the difference in specific gravity, particles, and particle size, and the adhesiveness and cohesiveness caused by moisture and static electricity. It is a work.

In response to such a problem, the applicant has developed a powder quantitative feeder as shown in Patent Document 1. As shown in FIG. 4, the basic structure of this device includes a supply means 4, a supply board 5, and a forced discharge board 6. The supply board 5 and the forced discharge board 6 are installed at the same height, and the supply means 4 is arranged at a position one step higher than that. The supply means 4, the supply board 5, and the forced discharge board 6 are all configured to rotate.

The supply means 4 has blades 4a and 4a, and the tips of the blades 4a and 4a are in sliding contact with the upper surface of the supply plate 5. The supply plate 5 and the forced discharge plate 6 are formed in a gear-shaped disk, and teeth are formed at equal intervals on the peripheral edge thereof. The supply board 5 and the forced discharge board 6 are arranged so that their teeth mesh with each other.

The powder sent by the blades 4a, 4a ... Of the rotating supply means 4 is sequentially sent into the measuring grooves 5a, 5a ... Of the rotating supply board 5, and the measuring grooves 5a, 5a ... Are filled with the powder. Will be done. A discharge chute 7 is provided below the position where the protruding teeth 6a, 6a ... Of the forced discharge board 6 mesh with the measuring grooves 5a, 5a ... Of the supply board 5, and is buried in the measuring groove 5a of the supply board 5. The powder is forcibly discharged to the discharge chute 7 by the protruding teeth 6a of the forced discharge board 6.

Japanese Unexamined Patent Publication No. 2012-41106

As a method of using such a metering feeder device, a belt conveyor (not shown) is installed below the discharge chute 7, a plurality of discharge destination containers are arranged on the belt conveyor, and the containers are sequentially conveyed directly under the discharge chute 7. The discharge destination container may sequentially contain the powder quantified by the measuring groove 5a.

However, if the shape of the discharge destination container here is different from the discharge chute which is a perfect circle in the plan view, such as a rectangle or a polygon in the plan view, the powder does not fall into the discharge destination container. There is a problem that the body spills or powder accumulates in a mountain shape in the discharge destination container and cannot be sealed with a cap or the like.

The present invention has been made for such a problem, and provides a powder quantitative feeder device capable of quantitatively supplying powder to a discharge destination container in just proportion regardless of the shape of the discharge destination container. The purpose.

The present invention has the following features in order to achieve the above object.
[1] The storage container into which the powder is charged and
A supply board that rotates and conveys the powder supplied from the storage container,
It has a tubular shape with a bottom, and a discharge hole is formed in a part of the bottom corresponding to the peripheral edge of the supply board, and a storage part in which the supply board is housed,
It is equipped with a discharge adjustment plate that is installed between the supply board and the bottom of the storage part, or behind the bottom of the storage part, and has a discharge adjustment hole that is smaller than the discharge hole and is not a perfect circle at a position corresponding to the discharge hole. Quantitative feeder device for powder.

[2] The supply board is composed of a gear-shaped disk having a measuring groove, and powder is stored in the measuring groove which is a recess of the gear and is rotationally conveyed.
The powder metering feeder is further composed of a gear-shaped disk, and is equipped with a forced discharge plate that meshes with the supply plate to assist the discharge of the powder contained in the measuring groove of the supply plate.
The accommodating section accommodates both the supply board and the forced discharge board, has a tubular shape along the outer shape of the supply board and the forced discharge board, and has a discharge hole at a position corresponding to the meshing part of the supply board and the forced discharge board. Is formed,
The powder quantitative feeder device according to [1], wherein the discharge adjusting plate has a shape that conforms to the outer shapes of the supply board and the forced discharge board.

[3] The quantitative feeder device according to [1] or [2], wherein the discharge adjusting hole is a triangle, a rectangle, a polygon, an ellipse, or a star.

It is sectional drawing which shows the whole structure of the powder quantitative feeder apparatus which concerns on embodiment of this invention. It is a top view which shows the quantification part of the powder quantification feeder apparatus which concerns on embodiment of this invention. It is sectional drawing which shows the quantification part of the powder quantification feeder apparatus which concerns on embodiment of this invention. It is sectional drawing around the supply board and forced discharge board of the conventional powder quantitative feeder apparatus.

Hereinafter, the granular material quantitative feeder device according to the embodiment of the present invention will be described with reference to the attached drawings.

FIG. 1 is a cross-sectional view showing the overall configuration of the powder quantitative feeder device according to the embodiment of the present invention. This powder quantification feeder device includes a powder storage container (hopper) 2 in which a powder input port 1 is opened, a disk frame 10 in which a quantification unit for quantifying powder is installed, and powder. It has a motor 8 that drives a metering unit.
The storage container 2, the disc frame 10, and the motor 8 are installed on the gantry 9.

In FIG. 1, the storage container 2 has a straight cylindrical shape for the purpose of preventing bridging. The storage container 2 may have a cone shape in which the diameter decreases toward the bottom.

As a part of the stirring shaft 11, a stirring rod 3 made of a substantially L-shaped round bar is attached in the storage container 2. The stirring rod 3 functions by rotating synchronously with the stirring shaft 11 so that the powder in the storage container 2 does not adhere to the bridge or the inner side surface of the storage container 2. On the lower end side of the stirring shaft 11, a supply means 4 for feeding and supplying a fixed amount of powder to a supply board 5 described later is attached.

A half-moon-shaped partition plate 12 is provided below the stirring rod 3 with a slight gap from the inner wall surface of the storage container 2. The partition plate 12 separates the inside of the storage container (hopper) 2 as a partition wall and the powder supply means 4 installed below the container (hopper) 2. The partition plate 12 keeps the powder pressure supplied to the supply means 4 constant, minimizes fluctuations in the supply amount due to changes in the remaining amount of the material inside the storage container 2, and enables more accurate quantitative supply. Works for.

FIG. 2 is a plan view showing a quantification unit of the powder quantification feeder device according to the embodiment of the present invention, and FIG. 3 is a cross-sectional view thereof. The metering unit has a supply means 4, a supply board 5, and a forced discharge board 6. The supply board 5 and the forced discharge board 6 are installed at the same height, and the supply means 4 is arranged at a position one step higher than that. The supply board 5 and the forced discharge board 6 are housed in a tubular housing section 21 having a bottom (see FIG. 3). The accommodating portion 21 has a shape (8-shaped shape) along the outer periphery of the supply plate 5 and the forced discharge plate 6. The supply means 4, the supply board 5, and the forced discharge board 6 are all configured to rotate.

In the accommodating portion 21, a discharge hole 21a is formed in a part of the bottom corresponding to the peripheral edge portion of the supply plate 5. The discharge hole 21a is provided at a position where the supply plate 5 is rotated half a turn with respect to the portion where the powder or granular material is supplied from the supply means 4.

The supply means 4 has a plurality of blades 4a, 4a ... Provided at equal intervals with respect to the center of the stirring shaft 11. The supply means 4 is arranged so as to partially overlap the peripheral edge of the supply board 5 in a plan view, and the tips of the blades 4a, 4a ... Of the supply means 4 are arranged so as to be in sliding contact with the upper surface of the supply board 5. Has been done. The supply means 4 rotates to promote the fall of the powder from the storage container 2 arranged in the upper part of the supply means 4, and feeds the powder into the measuring grooves 5a, 5a, etc. formed in the supply board 5. ..

The supply plate 5 is composed of gear-shaped disks having teeth formed at equal intervals on the peripheral edge. In the supply board 5, measuring grooves 5a, 5a ... Are continuously formed on the peripheral edge at equal pitches. The powder sent by the blades 4a, 4a ... Of the supply means 4 is sequentially sent into the measuring grooves 5a, 5a ... It will be filled with.

The forced discharge disc 6 is composed of a gear-shaped disc having teeth formed at equal intervals on the peripheral edge thereof. The forced discharge board 6 also has protruding teeth 6a, 6a, etc. formed on the peripheral edge at equal pitches. The protruding teeth 6a, 6a ... Are configured to mesh with the measuring grooves 5a, 5a ... Of the supply board 5.

As shown in FIG. 3, a discharge hole 21a is formed at the bottom of the accommodating portion 21 at a position corresponding to the meshing portion of the measuring grooves 5a, 5a, and the protruding teeth 6a, 6a. A discharge chute 7 is connected under the discharge hole 21a.

That is, the discharge chute 7 is arranged in the meshing portions of the measuring grooves 5a, 5a, and the protruding teeth 6a, 6a. When the protruding teeth 6a, 6a ... mesh with the measuring grooves 5a, 5a ..., the powder remaining in the measuring grooves 5a, 5a ... Is forced to the discharge chute 7 through the discharge hole 21a and the discharge adjustment hole 13a. Discharge to.

The supply means 4 and the supply panel 5 are driven by a motor 8. The forced discharge board 6 rotates synchronously with the supply board 5 by engaging the measuring grooves 5a and 5a of the supply board 5 with the protruding teeth 6a and 6a. The supply means 4, the supply board 5, and the forced discharge board 6 can be made of metal.

A belt conveyor (not shown) is installed below the discharge chute 7. A plurality of discharge destination containers (not shown) are arranged on the belt conveyor. The discharge destination container is sequentially conveyed directly under the discharge chute 7, and the quantified powder is sequentially stored in the discharge destination container.

A discharge adjusting plate 13 is provided between the supply plate 5 and the bottom of the accommodating portion 21. The outer shape of the discharge adjusting plate 13 is formed to have the same shape as the bottom of the accommodating portion 21. That is, the discharge adjusting plate 13 has a shape along the outer circumferences of the supply board 5 and the forced discharge board 6. The discharge adjusting plate 13 is formed with a discharge adjusting hole 13a that is smaller than the discharge hole 21a and is not a perfect circle at a position corresponding to the discharge hole 21a.

The discharge adjusting hole 13a has a shape (similar shape or a slightly smaller similarity shape) corresponding to the shape of the storage port of the discharge destination container in a plan view. For example, if the shape of the storage port of the discharge destination container is rectangular, the shape of the discharge adjustment hole 13a is formed in a rectangular shape. In the example of FIG. 2, the shape of the discharge adjusting hole 13a is formed as a rectangle having a short side in the radial direction of the supply plate 5.

Next, the operation of the powder quantitative feeder device configured in this way will be described. In this powder metering feeder device, a discharge adjusting plate 13 is provided between the supply plate 5 and the bottom of the accommodating portion 21, and the discharge adjusting plate 13 has a discharge adjusting hole 13a having a shape corresponding to the shape of the discharge destination container. Is forming. Therefore, the powder buried in the measuring grooves 5a and 5a of the supply board 5 is scraped out by the protruding teeth 6a and 6a of the forced discharge board 6 and filled in the discharge adjusting hole 13a. Since the discharge adjusting hole 13a is formed in the shape of the discharge destination container, the outer shape of the powder buried in the discharge adjustment hole 13a is the same shape as the storage port of the discharge destination container in a plan view. It is discharged to the tip container.

As described above, in the present invention, by forming the discharge adjusting hole 13a having a shape corresponding to the shape of the discharge destination container, even if the shape of the discharge destination container is not a perfect circle, the shape of the discharge destination container does not matter. It is possible to realize a fixed quantity supply.
Regardless of the above-described embodiment, the present invention may be subject to various design changes as long as it does not deviate from the gist of the present invention.

For example, the shape of the discharge adjusting hole 13a can be various shapes such as a triangle, a rectangle, a polygon, an ellipse, or a star shape depending on the shape of the discharge destination container. The discharge adjusting hole 13a does not have to be the same as the shape of the discharge destination container in a plan view, and may be formed to be one size smaller with the same outer shape.

Further, the supply board 5 may have a conical shape or a truncated cone shape in which measuring grooves 5a, 5a ... Are not formed on the peripheral edge. Further, the forced discharge board 6 may not be provided.

Further, although the discharge adjusting plate 13 has been described as being installed between the supply plate and the bottom of the accommodating portion in the above description, the emission adjusting plate 13 may be installed on the bottom back of the accommodating portion 21. good.

The protruding teeth 6a, 6a ... Of the forced discharge board 6 are configured to mesh with the measuring grooves 5a, 5a ... Of the supply board 5, but the tips of the protruding teeth 6a do not touch the bottom of the measuring groove 5a. The distance between the rotation shafts of the supply plate 5 and the forced discharge plate 6 may be set to a predetermined distance from the time when they are meshed with each other. According to this, since the protruding teeth 6a, 6a ... mesh loosely with the measuring grooves 5a, 5a ... Of the supply plate 5, even if the discharge adjusting hole 13a is smaller than the capacity of the measuring groove 5a, the protruding teeth 6a , The pressure generated by the scraping of 6a can be adjusted.

2 Storage container 4 Supply means 5 Supply board 6 Forced discharge board 7 Discharge chute 8 Motor 9 Stand 10 Disc frame 13 Discharge adjustment plate 21 Storage unit

Claims (1)

The storage container in which the powder is charged and
A supply plate consisting of a gear-shaped disk having a measuring groove, which accommodates the powder supplied from the storage container in the measuring groove, which is a recess of the gear, and rotationally conveys the powder.
It consists of a gear-shaped disk, and is a forced discharge board that meshes with the supply board to assist the discharge of powder contained in the measuring groove of the supply board.
It accommodates both the supply board and the forced discharge board, has a bottomed cylinder shape that follows the outer shape of the supply board and the forced discharge board, and has a discharge hole formed at a position corresponding to the meshing part of the supply board and the forced discharge board. and a has been accommodating portion,
In a plurality of discharge destination containers, which are triangular, rectangular, polygonal, or star-shaped in a plan view, they are arranged on a belt conveyor installed below the discharge hole and sequentially conveyed directly below the discharge hole. It is a powder quantitative feeder device that sequentially stores the powder quantified by the measuring groove.
It has a shape along the outer shape of the supply plate and forcible discharge panel, between the bottom of the housing portion and the supply plate and forcible discharge panel, or installed in the bottom back of the housing portion, out discharge at a position corresponding to the discharge hole and a discharge adjustment plate adjustment hole is formed,
The discharge adjustment hole is a powder having a shape that matches or is slightly smaller than the shape of the storage port of the discharge destination container in a plan view, is smaller than the discharge hole, and is larger than the measuring groove. Quantitative feeder device.

Images