JPH05112389A - Powder container - Google Patents

Abstract

PURPOSE:To enable powder filling work not accompanied by generation of powdery dust by a method wherein a deaerating filter and a gas exhaust are provided at an upper part of a powder container body, while a powder filling and discharging port is provided at a lower part. CONSTITUTION:A cylindrical upright container 7 made of synthetic cloth prominent in sealingness and humidity-proofness such as urethane, which is connected with a container top plate 15 at an uppermost part and a cone-shaped bottom part 17 at a lowest part, is provided at the bottom part 17 with a filling and discharging port 2 having a coupler which is opened and closed by a filling and discharging valve 3. In an upper part inside the container, a deaerating filter 4 is provided, which is made of nylon or the like and separated from a lid part, and also a deaerating (an air feeding) nozzle 5 is mounted which has a lid 6 at its tip end. A frame body 9 supporting this container 7 is constituted foldable by having a floating frame member, which has a pin 10 and a hinge 8 with a lock on two opposing surfaces and comprises an upper timber 13, a lower timber 14 and a slant timber 12.

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION The present invention relates to a container for storing powder,
In particular, it relates to a container for transporting fine powder.

[0002]

2. Description of the Related Art A powder container has a large-diameter filling port in the upper part and a discharge port of the same size in the lower part.

The filling is carried out through the filling port on the upper part. At this time, since the powder entrains a large amount of gas, the gas pressure inside the container rises. The compressed gas is
Although it escapes from the filling port, dust is scattered by this gas flow and pollutes the surroundings. Further, since gas is accumulated between the powders, the volume efficiency is low.

On the other hand, the discharge is performed through the discharge port at the lower part, but at this time, since the inside of the container becomes a negative pressure,
There is a problem that the discharging does not proceed smoothly and that the falling powder is scattered around.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a powder container with improved volumetric efficiency, which is capable of filling and discharging powder without the generation of dust.

[0006]

The present invention provides a powder container having a degassing nozzle and a built-in degassing filter in the upper part of the container body, and a filling / discharging port in the lower part.

In the present invention, the container body defines a frame member that defines a plurality of fixing surfaces, a floating frame member that has both ends and hinge means between them, and joins the fixing surfaces. And a foldable container for powder, which is made of a flexible sheet.

In the container according to the present invention, the powder is filled through the opening provided in the lower portion which has both functions of filling and discharging. The filling / discharging port is preferably a coupling means that can be connected to the powder transfer pipe,
It has normally required members such as a backflow prevention valve. The shapes of the opening and the coupling means may be such that the filling / discharging port and the transport pipe can be connected to each other without leakage.

The powder is introduced into the container together with a carrier gas. A degassing filter is provided at the top of the container to separate the powder from the gas. The material and shape of the filter are determined by the type of powder and the pressure applied. Preferably, a filter is used over the entire upper surface of the container, more preferably a filter made of a flexible material that can be bent. Provide a gas outlet between the degassing filter and the top of the container. A degassing nozzle and a detachable coupler may be provided to be connected to the exhaust means. The material and shape of the filter are determined by the type of powder and are not particularly limited.

The powder is discharged through the opening.
In this case, since the outside air flows into the container through the gas discharge port, the inside of the container does not have a negative pressure, and the powder can be easily discharged. Further, when the outside air flows in, the filter is backwashed, so that clogging of the filter is eliminated.

The container of the present invention preferably has a collapsible container body. Such a container is composed of a frame member and a sheet material. A frame material made of aluminum is preferably used, and a moisture-proof synthetic cloth is used as the sheet material. The frame member is composed of a fixed frame member that constitutes a fixed frame surface and a floating frame member that joins the fixed frame surfaces together. The shape of the frame surface formed by the fixed frame material is not particularly limited, but is preferably rectangular, and a reinforcing material may be appropriately provided. The floating frame member is provided with hinge means at both ends and an intermediate portion, and the fixed frame members are joined at the end hinge means. The end hinge means is preferably a lock pin to which the floating frame member is pivotally mounted by inserting the pin into a hole provided in the fixed frame member. The floating frame member joins the fixed frame surfaces at a plurality of points and bends at the intermediate hinge portion to allow the container body to be folded in space. The intermediate hinge means may be of any shape and type provided that it is a hinged means with a lock. The surface of the container made of sheet material preferably has a substantially cylindrical shape having a conical portion that converges to the filling / discharging port in the lower portion, and the outer surface thereof is fixed to the frame material.

[0012]

In the container of the present invention, the powder and the carrier gas are separated through the internal deaeration filter and only the gas is discharged, so that the filling operation can be performed without generating dust. Further, even if a large amount of carrier gas is used, the gas is smoothly discharged, so that the bulk density of the powder can be increased and the volume efficiency is high. Furthermore, since the container of the present invention is foldable, it can be efficiently stored and transported when empty.

[0013]

DETAILED DESCRIPTION OF THE INVENTION One specific embodiment of the present invention will be described below with reference to the drawings.

1 and 3 show an elevational view and a side view of the container.

The container 7 is a cylindrical vertical container made of synthetic cloth such as urethane, which is hermetic and moisture-proof, and has a container top plate portion 15 at the uppermost portion and a conical bottom portion 17 at the lowermost portion. is doing. The angle that the conical part stretches is 60 ~ when assembled as shown in the figure.
About 160 ° is preferable. Further, at the lower end of the bottom portion 17, there is a filling / discharging port 2 equipped with a coupler. After the cap 1 is removed, the powder is filled and discharged by a powder transfer pump (not shown) which is connected to a transfer pipe using a coupler.

A nylon degassing filter 4 is provided in the upper part of the container at a distance of about 5 to 10 cm from the lid.

In the embodiment shown in the figure, the cross section of the container is rectangular, and the aluminum frame body 9 is composed of four side surfaces. Two of them are fixed surfaces as shown in FIG. 1, and the other two opposite surfaces are provided with a floating frame material having a pin 10 and a hinge 8 with a lock so that they can be folded as shown in FIG. ing. Floating frame material is upper chord material 13
The lower chord member 14 and the diagonal member 12 are bent at each hinge as shown in FIG. 4, and the entire container is folded. The conical part of the bottom part 17 is hung on the upper chord material at the final stage of powder discharge, and the container naturally collapses, so that the container bottom part becomes an acute angle and the powder does not remain inside. Is discharged.

Casters are provided at the lower ends of the main columns of the frame body 9 to facilitate movement. Further, a lift sheath 18 is provided so that the forklift can be transported.

The material of the container body, the filter, the frame, etc. may be appropriately selected depending on the properties of the powder, and is not limited to the description of the above embodiment.

[0020]

[Brief description of drawings]

FIG. 1 is an elevation view of a container showing an embodiment of the present invention.

FIG. 2 is a top view of the container shown in FIG.

FIG. 3 is a side view of a container similar to the container shown in FIG. 1 (only the arrangement of the deaeration nozzle is different).

FIG. 4 is a side view showing the outer shape of the container when it is folded.

[Explanation of symbols]

 1 Filling / Discharging Nozzle Cover 2 Filling / Discharging Nozzle 3 Filling / Discharging Valve 4 Filter 5 Degassing (Intake) Nozzle 6 Degassing (Intake) Nozzle Lid 7 Container Body 8 Hinge 9 Frame Body 10 Pins 11 Caster 12 Diagonal 13 Upper Chord Material 14 Lower chord material 15 Container top plate 16 Container body 17 Container bottom 18 Lift sheath 19 Lifting metal fittings

Claims (2)

[Claims] 1. A powder container having a degassing filter and a gas outlet in the upper part of the container body and a powder filling / exhausting port in the lower part. 2. The container according to claim 1, wherein said container body defines a frame member defining a plurality of fixing surfaces, a floating frame member and hinges having both ends and hinge means between them, and the container. A foldable product consisting of a moisture-proof sheet that forms the surface. [0001]