JPS6017220Y2 - Powder mixing device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a powder mixing device.

More specifically, the present invention provides a device that can uniformly and easily mix different types of powder or granules of the same type with deviations using a simple device.

In general, two or more types of powder or granules with different chemical or physical properties are mixed, or in the case of the same type of powder or granules that have deviations in quality characteristics, mixing is performed to reduce variations in quality characteristics. .

Various types of such mixing devices have been proposed.

For example, it has been proposed that the mixing tank has a mixing blade that uses rotational or reciprocating motion generated by power inside the mixing tank, or that the mixing tank itself rotates or reciprocates.

Since such a mixing device uses power, it is a very complicated equipment, and since the power transmission shaft needs to penetrate the wall of the mixing tank, there are also problems in terms of sealing when mixing under pressure or reduced pressure. occurs.

As a simple mixing device that eliminates this defect, a plurality of partition walls are arranged concentrically within a container body equipped with a supply port for granular material in the upper center, and the material supplied between each partition wall is the same. A hopper set mixing device is provided with a discharge port running at the lower part of the partition wall, or a plurality of partition walls are provided in the container body in the radial direction to provide a compartment, and the compartment is located at the bottom end of the container. Mixers have been proposed which are closably connected to a common outlet and whose inlet opens into the upper part of one compartment.

In such embodiments of both mixing devices, the powder or granular material is supplied between one partition wall or into a compartment from one supply port,
When the powder is filled, it is transferred to the next location, and when the container itself is full, the supply is stopped, the outlet is opened, and the container is discharged for mixing.

Although it is simple to use such an apparatus in which the containers are separated by a plurality of partition walls and mixed at the outlet, the inventors of the present invention have conducted studies and found the following drawbacks.

First, since the above-mentioned mixing apparatus is a batch type and has poor productivity, it is necessary to make it continuous.

Next, when discharging the powder and granules from the mixing container, if a means of air blowing with a rotary feeder is adopted in order to further increase the mixing effect due to continuous operation, the powder and granules supplied to each partition or compartment will be the same. It has been found that uniform mixing cannot be achieved in an embodiment in which a discharge port is provided for discharging at a ratio of .

Therefore, an object of the present invention is to provide an improved mixing device in order to eliminate such defects, and the present invention has the following configuration.

That is, the present invention provides a powder and granular material mixing device in which a rotary feeder is connected to a lower discharge port of a collecting hopper to mix and transfer the material, and a partition plate is provided in the collecting hopper dividedly arranged in the axial direction of the rotary feeder. The compartments are provided with independent powder supply ports, and the amount of powder and granules flowing out when passing through the rotary feeder is smaller on the descending side of the rotary feeder than on the ascending side. The present invention relates to a powder/grain material mixing device characterized in that it is configured to be freely adjustable so as to be adjusted as follows.

The present invention will be described in detail below with reference to the drawings, but it goes without saying that the present invention is not limited to the following embodiments.

Fig. 1 is an overall schematic diagram of a powder/grain material mixing device according to the present invention, Fig. 2 is a sectional view taken along the line A-A' in Fig. 1, and Fig. 3 is a detailed sectional view of section B in Fig. 1. FIG. 4 is a schematic diagram showing another embodiment of the present invention.

In the figure, reference numerals 1 and 1' designate flexible containers in which the same type of powder and granules with deviations are divided into lofts and filled.

Although FIG. 1 shows two flexible containers, the embodiment of the present invention shows a 40-ton mixed container as shown in FIG.

2, 2 are receiving hoppers provided at the bottom of each of the flexible containers 1, 1'.

5 is a collection hopper which is a mixing device according to the present invention;
4'' is a supply pipe that communicates the receiving hopper and the collecting hopper 5.

During the winter, the supply pipes have the same slope, the same inflow angle, and the same pipe diameter, and the powder and granules are allowed to flow down the supply pipes in approximately the same amount by gravity fall, and are collected from the supply pipes 9 to 9''. It is supplied to hopper 5.

Note that 3.3' is a valve provided on each supply pipe 4, 4'.

6.61, 62.63 are partition plates provided in the collection hopper, and these partition plates constitute compartments 12, 13° and 14.15, respectively, which are equal to the number of flexible containers.

That is, each compartment corresponds to a flexible container, and similarly, the other compartments 13, 14, and 15 correspond to flexible containers 4', 4'', and 4'', respectively.

Although the partition plates are for providing compartments, they may be provided radially from the center of the hopper as shown in FIG. 2, or may be provided toward the outer circumference by shifting the center of the hopper.

This partition plate may be provided vertically or partially or completely inclined.

Further, it is preferable that the partition plate is provided so as to be detachable from above, and a suitable gap is provided between the partition plate and the discharge lower of the collection hopper to form the discharge passage 12 of each compartment.

A uniform amount of the 40 granular materials filled in each compartment, which vary in size, flow out from each discharge path 112 and are mixed together to reach the discharge lower.

13 is a supply port of the rotary feeder 10, which is connected to the discharge lower of the collecting hopper 5 via a valve 8.

Reference numeral 11 denotes a supply pipe for blowing the powder to the next step.

Therefore, the powder and granules flowing out to the discharge lower while being mixed are sent to the next process by the rotary feeder 10 with the effect of mixing the powder and granules by air blowing.

However, although the discharge passage 12 has an equal outflow cross-sectional area between each partition plate and the hopper wall, there is the following defect when blowing with the rotary feeder 10.

That is, in FIG. 3, the rotary teeth 16 of the rotary feeder 10 are rotating clockwise as shown in the figure, but with the vertical center line 17 of the rotary feeder as the boundary,
The amount of feed on the ascending side 17 of the rotary teeth 16 is smaller than on the descending side 18, resulting in a problem that a uniform amount of mixing between each lot cannot be achieved.

Therefore, in the present invention, in order to make the cross-sectional area of the compartment discharge passage, which is often used for feeding, located on the descending side 18 of the rotary feeder 10 smaller than that on the ascending side, the outflow cross-sectional area can be adjusted as desired. It is configured so that it can be obtained.

One such embodiment will be explained using FIG. 3.

In the figure, reference numeral 19 denotes a jamb plate whose lower end is bent at an angle α.

The bent side of the interference plate 19 is attached to a partition plate forming a compartment located on the descending side so that its position can be adjusted freely.

This installation can be done by making a long hole in the jama plate and fixing it with bolts 20 or the like.

The bent part of the angle α of the jamb plate can reduce the cross-sectional area of the discharge path on the descending side, reducing the amount of weight of powder and granules falling, making the amount uniform with the ascending side of the rotary feeder. It is possible to blend with

The amount of falling powder or granules can be adjusted by adjusting the inclination angle α, length, etc. of the jama plate.

Alternatively, a structure in which the partition plate functions as a barrier plate may be used without providing a barrier plate.

Still another embodiment will be described using FIG. 4.

Figure 4 shows four partition plates 64, 65, 66°67 connected to the axis 21.
On the other hand, the angular position between the partition plates can be freely adjusted using hinges 20, and the area of the compartment can be adjusted by tightening them in the vertical direction with nuts or the like.

In other words, in the case of Figure 4, each partition plate can be adjusted, so
The cross-sectional area of the outflow path may be adjusted by adjusting the compartment located on the descending side of the rotary feeder to be smaller than that on the ascending side 18.

In this case, you are also adjusting the entire compartment.

In this invention, as mentioned above, a partition plate is provided in the hopper to form compartments, and powder and granules are supplied to each compartment and flowed out uniformly and blown by a rotary feeder, so it can be made continuous. At the same time, the structure is such that the cross-sectional area of the powder outlet path in the hopper can be easily changed, which eliminates the problem of uneven delivery amount on the ascending and descending sides of the rotary teeth, which is a problem when blowing with a rotary feeder. This has the excellent effect of simultaneously eliminating both problems.

[Brief explanation of the drawing]

Fig. 1 is an overall schematic diagram of a powder/grain material mixing device according to the present invention, Fig. 2 is a sectional view taken along line A-A' in Fig. 1, and Fig. 3 is a B-B in Fig. 1.
The group detailed sectional view, FIG. 4, is a schematic view showing another embodiment of the present invention. 1: Container, 4.4', 4'', 4''': Supply pipe, 5;
Collection hopper 6, 61, 62, 63, 64. 65, 6
6.67: Partition plate, 7: Discharge port, 9: Supply port, 10: Rotary feeder, 12: Discharge path, 17: Rising side, 18
: descending side, 19: jama board.

Claims (2)

[Scope of utility model registration request] (1) In a powder mixing device configured to mix and transfer powder and granular materials supplied to a collecting hopper with a rotary feeder connected to a lower discharge port of the hopper, the hopper is A partition plate extending in the radial direction from the center is provided to form a compartment, and each compartment is provided with an independent powder supply port. A powder/granular material mixing device characterized by being provided with a friction plate for adjusting the outflow amount. (2) The powder and granular material mixing apparatus according to claim (1) of the Utility Model Register, wherein the collecting hopper is provided with the same number of compartments as the mixing lofts.