JPH0472190A - Powdery and granular material container - Google Patents

Abstract

PURPOSE:To prevent bridge forming or blockage at the time of discharging from happening, make the storage capacity larger and make it possible to eliminate discharge residue by a method wherein a powder and grain discharging device is rotatably attached on the inner surface of a closing plate, and an agitating element which generates a circulating flow of powder and grain, and a driving means to drive the agitating element are equipped. CONSTITUTION:A powder and grain discharging device 10 is constituted of a detachable lid 5 at the upper end surface of a container body 1, a closing plate 11 with the same shape as the lid 5, a discharge port 12 which is formed at one end of the closing plate 11, an electrically operated motor 13 which is a driving means fixed at the central part on the outer surface of the closing plate 11, and an agitating element 14 which is attached on the inner surface of the closing plate 11 through a rotary shaft 13a of the electrically operated motor 13. When the motor 13 of the discharging device 10 is operated, the agitating element 14 rotates, and powder and grain in the container body 1 is smoothly discharged from the discharge port 12 without forming bridge in the container main body 1 or causing blockage at the discharge port 12, and discharged to a throw-in port.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is suitable for storing and transporting powder and granular materials, especially powder and granular materials with poor fluidity, and is suitable for storing and transporting powder and granular materials that can be easily discharged. It concerns the body container.

[Conventional technology]

Conventionally, this type of powder container was
As disclosed in Japanese Patent No. 19, it is common to have a small-diameter entrance/exit at one end of the container body, and a sliding plate inclined toward the entrance/exit inside the container body. In this case, valves, slide gates, etc. are installed at the entrance and exit.
Since it is necessary to open and close under the pressure of the powder, the opening area of the entrance and exit should be made small.

[Problem to be solved by the invention]

However, when the sliding plate is provided inside the container body as described above, there is a drawback that the internal volume of the container body becomes small, and the capacity of the powder and granular material that can be stored becomes small. Furthermore, since the opening area of the inlet/outlet is small, in the case of adhesive or compressible powder, a bridge may be formed during discharge or the inlet/outlet may be blocked, making it impossible to smoothly discharge the powder.

On the other hand, powder and granular containers are also closed, which have an opening at the lower end of the side wall of the prismatic container body and a lid pivoted to open and close the opening. In the case of this container, to discharge the powder, the container body is tilted at 45 degrees using a tilt device, the lid is opened, and the powder is discharged from the opening.

This powder container has the advantage that there is no need to provide a sliding plate inside, and a large storage capacity for powder and granules can be obtained, as well as a large opening area and less risk of the opening becoming clogged. However, the angle between the horizontal line and the inner wall of the container body, which is the sliding surface for powder and granular material during discharge, is 45
Since the temperature is the highest, there is a high possibility of bridging in powdery materials with poor fluidity, resulting in a large amount of residual discharge.

Measures have been taken to promote discharge, such as attaching a vibrator to the container body to apply vibrations, but this requires a large-scale device and is not sufficient to prevent bridge formation.

Therefore, the object of the present invention is to provide a powder that can effectively prevent bridge formation and clogging during discharge even in powder and granular materials with poor fluidity, can provide a large storage capacity for powder and granular materials, and can reduce the amount remaining to be discharged. Our goal is to provide granular containers.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a cylindrical container body with at least one end formed in a circular shape, an opening formed in the circular end of the container body, and a selective opening in the opening. The powder and granular material discharger includes a lid or a powder discharger that can be attached to and removed from the opening, and the powder and granular material discharger includes a closing plate that closes the opening, a discharge port formed in the closing plate, and a rotating part on the inner surface of the closing plate. It is equipped with a stirring blade that is freely attached to generate a circulating flow of powder inside the container body, and a driving means that is attached to the outer surface of the closing plate and drives the stirring blade.

[Effect]

When discharging powder or granules with poor fluidity from the container body,
Rather than providing a sliding surface or applying vibration using a vibrator, applying mechanical agitation force directly to the powder is most effective in preventing bridging and clogging. In the present invention, when discharging powder from the container body, a powder discharger is attached to the opening, and the container body is turned over so that the opening faces downward. Then, when the drive means of the discharger is driven, the stirring blades rotate to generate a circulating flow of the powder and granules inside the container body, and the powder and granules are guided to the discharge port and sequentially discharged. In this way, since mechanical stirring force is applied directly to the powder and granules using the stirring blades, bridging and clogging during discharge can be effectively prevented, even for powders with poor fluidity.
The remaining discharge amount can be reduced.

〔Example〕

FIG. 1 shows an example of a container body 1 according to the present invention.

The container body 1 has a cylindrical shape, and a rectangular opening 2 extending in the diametrical direction is formed in the upper end surface of the container body 1, and an appropriate number of screw holes are formed around the opening 2 as shown in FIG. 3
is provided. Two parallel legs 4 are fixed to the lower end surface of the container body 1. When storing powder or granular material inside the container body 1 for a long period of time or when transporting the powder or granular material, a 15 for closing the opening 2 is removably attached to the upper end surface of the container body 1. A screw insertion hole 6 corresponding to the screw hole 3 is formed in the peripheral edge of the lid 5, and by screwing the bolt 7 into the screw hole 3 through the screw insertion hole 6, M5 is inserted into the opening. 2 can be sealed to prevent powder leakage and moisture intrusion.

Note that a handle 8 is fixed to the top surface of the lid 5 for convenience of handling.

When discharging the powder inside the container body 1, use the lid 5.
A powder discharge fa10 is installed instead.

As shown in FIGS. 3 to 6, the powder discharger IO
A closing plate 11 having the same shape as the lid 5 that is removable on the upper end surface of the container body 1, a discharge port 12 formed at one end of the closing plate 11, and a closing plate 11 fixed to the center of the outer surface of the closing plate 11. It is composed of an electric motor 13, which is an example of a driving means, and a stirring blade 14 attached to the inner surface of the closing plate J1 via a rotating shaft 13a of the electric motor 13. The stirring blade 14 is located inside the container body 1 to generate a circulating flow in the powder and granules, and its tip has a rotation direction (direction of arrow A).
It has a swept wing section 14a that is inclined rearward relative to the wing.

Note that a conical guide piece 15 is fixed to the center of the stirring blade 14 to prevent powder from remaining. The discharge port 12 projects in a cylindrical shape from the outer surface of the closing plate 11, and a discharge valve 16 that can be opened and closed is provided in the middle of the discharge port 12.

To attach the powder discharger 10 to the container body 1, place the closing plate 11 on the opening 2 in the same way as attaching the lid 5, and insert the screw insertion hole 11a provided at the periphery of the closing plate 11. The port 7 can be screwed into the screw hole 3 of the container body 1 through the screw hole 3 of the container body 1. Thereby, the closing plate 11 comes into close contact with the container body 1.

Here, a method for discharging the powder and granular material stored inside the container body 1 will be explained with reference to FIGS. 7 to 9.

First, the discharger 10 is attached to the upper end surface of the container body 1, the container body 1 is inverted so that the opening 2 is facing downward, and the container body 1 is placed on the pedestal 20 as shown in FIG. And discharge l! The outlet 12 of 10 and the powder inlet 21 are connected using a flexible chute 22 or the like. Here, when the discharge valve 16 is opened and the motor I3 of the discharge 11IO is driven, the stirring blade 14 rotates in the direction of the arrow in FIG. 8, thereby generating a circulating flow in the direction of the arrow in FIG. That is, the granular material is pushed out from the center of the container body 1 toward the outer circumference by the stirring blades 14, rises along the side wall of the container body 1, and then forms a flow that descends at the center of the container body 1. For this reason, the powder and granules are stored in the container body 1.
The liquid is smoothly discharged from the discharge port 12 without forming a bridge inside the discharge port 12 or causing blockage at the discharge port 12, and is discharged to the input port 21 via the flexible chute 22. Note that an air intake port 9 (see Figure 7) is provided at the bottom of the container body 1, and the lid is kept closed when the container body 1 is transported or stored, and the lid is removed only when discharging the powder and granules. Attaching 9a is effective in assisting in the discharge of powder and granules.

FIGS. 1O and 11 show other discharge methods according to the present invention. In the case of powder with high adhesiveness and compaction, when a circulating flow as shown in Fig. 8 is generated, a compacted layer of powder and granules is formed near the outer periphery of the bottom of the container body 1, and this area is It may be difficult to discharge the powder or granules. In this embodiment, the stirring blades of the above-mentioned embodiments are attached in the opposite direction, and the swept blade section 30a provided at the tip of the stirring blade 30 is inclined forward with respect to the rotation direction (the six directions of arrows). Therefore, the powder and granules are scraped together from the outer periphery of the container body 1 to the center, forming a circulating flow of powder and granules that rises in the center and descends along the side walls. As a result, even powder particles with high adhesion and compactness can be discharged from the discharge port 31 without forming bridges. In this case, it is effective to provide the discharge port 31 slightly closer to the center than in FIG. 8 in order to reduce the remaining discharge amount.

FIG. 12 shows another example of the powder discharger. In this embodiment, a scraping rod 40 that rotates along the inner wall surface of the container body 1 is vertically attached to the tip of the stirring blade 41. This is particularly suitable for handling powder and granular materials that are highly adhesive to the wall surface of the container body 1. In this way, by using a dedicated agitating blade for each type of powder or granular material to be handled, it is possible to discharge a wide variety of powder or granular materials.

Note that the container body used in the present invention is not limited to a cylindrical shape; for example, a container body 50 in which only the upper end is cylindrical and the lower part is prismatic may be used, as shown in FIG. . A lid 51 is normally attached to the opening (not shown) of the container body 5o, and a powder discharger is attached in place of the lid 51 when discharging powder and granules. In this case, since most of the 5° container body is in the shape of a rectangular cylinder, there are advantages in that the volumetric efficiency during storage of powder and granular materials is improved and handling is also facilitated. Furthermore, by surrounding the container body 5o with the frame 52, the containers can be stored in a stacked manner.

〔Effect of the invention〕

As is clear from the above explanation, according to the present invention, a mechanical stirring force is applied directly to the powder or granules by the powder or granule discharger to form a circulating flow in the powder or granules. This can effectively prevent bridging and blockage, and minimize the amount remaining to be discharged. Furthermore, since there is no need to provide a sliding surface on the container body, the volumetric efficiency of the container body is improved, and since a large-scale vibrator or the like for ejection is not required, costs can be reduced. Furthermore, since the ejector or the lid is removable from the container body, the opening is wide open when these are removed, and the inside of the container body can be easily cleaned through this opening.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an example of a container main body according to the present invention;
Fig. 2 is a partially enlarged perspective view, Fig. 3 is a perspective view of the powder discharger attached to the container body, Fig. 4 is a partially enlarged perspective view, and Fig. 5 is the same as Fig. 3. 6 is a sectional view taken along line V-V in FIG. 5, FIG. 7 is a perspective view when discharging powder and granules, FIG. Figure 9 is a sectional view taken along the line IX-IX in Figure 8, Figure 10 is a longitudinal sectional view showing another example of the discharge principle, Figure 11 is a sectional view taken along the line Xl-Xl in Figure 10, and Figure 12 is a cross-sectional view taken along the line Xl-Xl in Figure 10. FIG. 13 is a perspective view of another example of the granule discharger, and FIG. 13 is a perspective view of another example of the container body. 1.50... Container body, 2... Opening, 5...
・Lid, 7... Bolt, 10... Powder discharger, 11
... Closing plate, 12... Discharge port, 13... Electric motor (driving means), 14... Stirring blade, 16... Discharge valve. Fig. 1 Fig. 3 1... Container body 2... Opening section 5-...1 10... Powder discharge machine 11... ...Closing plate 12...Discharge port] 3...Electric motor (drive means)]4...
... Stirring blade Fig. 5 Fig. 1 S Fig. 6 Fig. 8 Fig. 10 Fig. 7 Fig. 13

Claims (1)

[Claims] A cylindrical container body with at least one end formed in a circular shape, an opening formed in the circular end of the container body, and a lid or a powder discharger that is selectively attached to and detached from the opening. The powder discharger is equipped with a closure plate that closes the opening, a discharge port formed in the closure plate, and a discharge port rotatably attached to the inner surface of the closure plate, and the powder discharger is configured to discharge powder particles inside the container body. 1. A granular material container comprising: a stirring blade that generates a circulating flow; and a driving means that is attached to the outer surface of a closing plate and drives the stirring blade.