JPH05124692A - Flexible container - Google Patents

Abstract

PURPOSE:To enable a complete, smooth and quick discharge of transported cargo under the least number of working steps. CONSTITUTION:A transported cargo loading port 2 is provided at a top part of a flexible bag 1 which has a reinforcing layer, and a discharging port 3 is at its bottom part. A pallet 4 is mounted outside the bag 1 in the surroundings of the transported cargo discharging port 3. Inside the bag 1, an aeration film 6 is stretched in the surroundings of the transported cargo discharging port 3, and at least one gas blowing port 7 is provided at a bottom part of the bag 1 below the aeration film 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a large-sized flexible container, which is used for transportation of powder and granules and other materials, to smoothly and quickly complete the removal of the transportation material at a required place. This brings both the advantages of the tank truck and the advantages of the small flexible container.

[0002]

2. Description of the Related Art For example, known transportation methods for cement, powders of calcium bicarbonate, granules and the like include a method using a tank truck and a method using a small flexible container. Here, the transportation method using the tank truck brings the rigid tank attached to the bed of the automobile to the receiving position and the unloading position of the granular material, respectively, along with the running motion of the automobile,
At each of those positions, the powder and granular material is filled into the tank and the powder and granular material in the tank is discharged. According to this method, in addition to the shape retaining property of the tank, Since the powder / granular material in the tank can be discharged by using compressed air, there is an advantage that the powder / granular material can be filled into the tank and discharged from the tank simply and quickly without any manual operation.

Further, the method using the flexible container has an advantage that the container can be transported by any kind of transportation means such as a truck, a freight car, a ship and an aircraft, and after the transportation is completed, the container can be transported. It has the advantage of transportation efficiency that it can be folded compactly and returned.

[0004]

However, when a tank truck is used, there is a problem that transportation efficiency is low due to the necessity of running an empty load on the return route due to the existence of the rigid tank. Further, when a flexible container is used, there is a problem that the filling and discharging work is labor intensive and the loading work efficiency is poor. Therefore, there is an urgent need to develop a large flexible container that has the advantages unique to tank trucks and the advantages unique to flexible containers, but in reality, it is possible to satisfy both the discharge efficiency of discharged goods and discharge work efficiency. It is in a situation where it cannot be raised as much.

The present invention advantageously solves the above problems of the prior art, while the inherent advantage of flexible containers is still such that the complete discharge of a package is sufficiently simple, rapid and many. It is intended to provide a fusible container that can be carried out without requiring work man-hours.

[0006]

A flexible container according to the present invention has a reinforcing layer, and has, for example, a package input port and a discharge port at each of the top and bottom of a tubular flexible bag. Provide a pallet on the outside of the bag, for example, around the package outlet located in the center of the bottom, while aerating inside the bag from around the package outlet to the side wall of the package. The membrane is extended, and at least one gas blowing port is provided on the bottom wall of the bag body below the aeration membrane.

More preferably, the discharge port of the package is
It is connected to a discharge pipe arranged on the pallet and the gas inlet is connected to an air supply pipe also arranged on the pallet. Further, preferably, a flexible portion is provided at a position near the gas blowing port of the air supply pipe. Further, it is preferable that a blow pipe is connected to the discharge pipe, and the aeration membrane is extended in a posture in which the height from the bottom portion gradually increases as the distance from the transport material discharge port increases.

More preferably, a blowing gas dispersion film is provided between the aeration film and the gas blowing port, and
Between the aeration film and the bottom of the bag, a gas impermeable film located adjacent to the aeration film is extended, and the bottom of the bag is separated from the gas impermeable film and the aeration film. In addition to providing a gas injection port that opens between
Another gas inlet opening below the gas impermeable membrane is provided.

[0009]

In this flexible container, after a predetermined amount of powdery or granular material is filled therein, it is transported to a predetermined place by a truck or other transportation means in a standing posture on a pallet, and after temporary storage, or Without temporary storage,
By opening a transportation article discharge port to a predetermined cargo receiving facility and simultaneously blowing pressurized air from the gas blowing port, the particulate matter as a transportation product is discharged. Upon such discharge, the pressurized air that has been blown from the gas blowing port and passed through the aeration film not only causes an increase in the internal pressure of the bag, but also reduces the frictional force between the aeration film and the powder / granular material, and While providing fluidization of the granular material, and effectively preventing the occurrence of the so-called hanging phenomenon of the granular material, the granular material is sufficiently smooth from the transport material discharge port provided at the bottom of the bag body, And it will be discharged quickly.

By the way, in such discharging work of the powdery or granular material, the discharging work is carried out through the discharging pipe which is arranged on the pallet and is connected to the discharge port of the transported material. In the case of connecting to, it is possible to sufficiently prevent dust generation due to discharge of the powdery or granular material, and greatly improve the working environment. Similarly, when the gas blowing port is also connected to the air supply pipe arranged on the pallet, it is possible to extremely easily connect the gas supply source to the gas blowing port.

When the air supply pipe connected to the gas blowing port is provided with a flexible portion located in the vicinity of the gas blowing port, pressurized air is introduced into the flexible bag from the gas blowing port. When the bag is blown, it is possible to sufficiently allow the bag bottom to rise, especially the peripheral part of the bottom part, from the pallet due to the swelling of the bag, and therefore an unreasonable force acts on the bag. It is possible to effectively prevent the deterioration of the durability of the bag body due to this.

In addition, in the discharge pipe connected to the discharge port of the transported material,
When the blow pipe is connected at a position close to the discharge port, when the particulate matter is clogged in the discharge pipe, the compressed air from the blow pipe is supplied to the discharge pipe to effectively prevent the clogging. Can be removed. When the aeration film is extended in a posture in which the height of the aeration film gradually increases as the distance from the discharge port of the transported object increases, the aeration film guides the flow of the powdery particles to the discharge port. , It can be discharged more smoothly.

Further, when a gas fractional film is provided between the aeration film and the gas blowing port at a position above the gas blowing port, the pressurized air blown from the gas blowing port becomes
It is possible to prevent a strong impact on only a specific part of the aeration film and make the amount of pressurized air passing through the aeration film substantially uniform over the entire circumference.

In addition, a gas-impermeable membrane located near the aeration membrane is extended between the aeration membrane and the bottom of the bag, and the membrane is opened between the two membranes at the bottom of the bag. When a gas blowing port is provided and another gas blowing port is provided below the gas impermeable membrane, the latter is blown by the supply of pressurized air to form powder particles on the aeration film. Regardless of the quantity of the object, the aeration film can be maintained in the desired tapered installation posture, and therefore, the aeration film is guided based on the blow of the pressurized air from the former gas blow port. Below, the granular material can always be discharged smoothly.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a view showing an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a bag body which is flexible and is substantially in the shape of a bale, and 2 and 3 respectively represent a top portion and a bag portion of the bag body 1. Shown are the loading and unloading ports on the bottom.

The bag 1 as described above is attached to the pallet 4 around the discharged article discharge port 3 provided in the central portion of the bottom of the bag 1 and the discharge port 3 is connected to the discharge pipe 5 arranged in the pallet 4. To do. Further, inside the bag body 1, an aeration film 6 is attached around the discharged article discharge port 3, and the height from the bottom of the bag body is gradually increased as the aeration film 6 is separated from the discharge port 3. Connect to the side wall of the bag with.
In addition, one gas blowing port 7 is provided below the aeration film 6 at the bottom of the bag, close to the side wall of the bag, and this gas blowing port 7 is also provided.
While being connected to the air supply pipe 8 installed in the
A gas dispersion film 9, which will be described in detail later, is provided above the above.

In such a flexible container, the flexible bag body 1 has a film body 1a made of, for example, polyester canvas coated with vinyl chloride resin, as shown in the partial sectional front view of FIG. A plurality of body-wound belts which are located at a predetermined interval in the length direction of the film body 1a
1b is wound around, and a plurality of body vertical belts 1c arranged at predetermined intervals in the circumferential direction of the film body 1a are wound around, and each body vertical belt 1c is formed as shown in FIG.
As shown in the top and bottom views in (a) and (b) respectively,
The respective end portions are fixed by winding them around the endless reinforcing ropes 1d and 1e and adhering.

Further, the transporting material input port 2 is composed of a cylindrical protrusion from the top of the bag body, and the input port 2 can be completely closed by the two tightening cords 2a. And input port 2
This occlusion of the tubular portion is made by attaching a plurality of chevron flaps to the tubular portion while maintaining the tightened state of the tubular portion with the tightening cord 2a.
It can be made even more complete by folding it into 2b and then tightening the closing ropes 2c passed through these flaps 2b to make it flat as shown in FIG. 3 (a).

Further, as shown in the plan view of FIG. 4, the aeration membrane 6 is formed by attaching four fan-shaped members 6a, which are also made of polyester canvas, to each other to form a circular shape having a predetermined diameter. The inner edge portion of the aeration film 6 is formed by a contour member, and together with the edge portion of the discharged article discharge port 3 and the rising portion of the discharge pipe 5,
It is attached to the pallet 4 by a plurality of bolts and nuts (see Fig. 1 (b)), and the outer edge portion of the aeration film 6 is attached to the connecting member provided on the inner surface of the side wall of the bag body to attach the side wall to the side wall. Mounted on.

By the way, the gas dispersion film 9 disposed above the gas inlet 7 is made of a resin-coated woven fabric, for example, which transmits little or no pressurized air, as shown in FIG.
When it is cut into a fan shape as shown in (a), its inner and outer end portions in the radial direction are attached to the bottom of the bag body at a position across the gas blowing port 7 as shown in FIG. 5 (b). The gas dispersion film 9 can be configured to be fixed by heat fusion or the like. In such a gas dispersion film 9, the pressurized air blown from the gas injection port 7 directly reaches the aeration film portion above it. Of the compressed air in the circumferential direction of the bag bottom.

FIG. 6 shows a pallet for mounting the bag body 1 in a standing posture and piping arranged on the pallet. The pallet 4 corresponds to the transporting material discharge port 3 of the bag body 1 at the center thereof. And a hole 4b located corresponding to the gas blowing port 7 at the bottom of the bag body. The pallet 4 of this example is provided with an exhaust pipe 5 communicating with the hole 4a and an air supply pipe 8 communicating with the hole 4b.
Further, a blow-in pipe 10 connected to the rising portion of the discharge pipe 5 leading to the hole 4a is provided, and preferably, the axis of the blow-in pipe 10 is at least at its connecting portion, the axis of the horizontal portion of the discharge pipe 7. To be coaxial with.

Of these pipes, the discharge pipe 5 is shown in FIG.
As shown in (a), the bag 1
It is opened to the inside of the bag by fixing it to the top plate 4c of the pallet 4 together with the edge portion of the outlet of the pallet 4 and the aeration film 6, and the air supply pipe 8 is provided on the pallet 4 as shown in FIG. By attaching the pipe end flange 8a mounted on the plate to the bottom of the bag around the gas inlet 7, it is opened to the shape-retaining chamber defined between the bottom of the bag and the aeration membrane 6. ..

Therefore, in the air supply pipe 8, the bottom of the bag body is deformed from a flat shape to a spherical shape by the expansion of the shape retaining chamber by supplying the pressurized air passing therethrough into the shape retaining chamber through the gas blowing port 7. In doing so, the bag body bottom portion receives an upward external force in the lifting direction. Because of this,
As shown in (b), a flexible portion 8b is provided in the horizontal portion of the air supply pipe 8 adjacent to the elbow, and the flexible portion 8b allows lifting deformation of the air supply pipe 8 to move to the bottom of the bag body. The action of the excessive force is prevented, and the durability of the bottom of the bag is improved. In addition, reference numeral 11 in the figure denotes a chain that restrains the excessive deformation of the flexible portion 8b.

When transporting, for example, powdered goods by the flexible container constructed as described above,
First, with the transported material inlet 2 of the bag body 1 closed, for example, air is supplied from the blow-in pipe 10 to reduce the pressure inside the bag to 0.1 kgf /
By raising the bag body 1 to about cm ² , the bag body 1 is erected on the pallet, and then the erected posture of the bag body 1 is maintained in a hanging state using a hanging tool (not shown).

At this point, the supply of air from the blow pipe 10 has already been stopped, and the valves (not shown) of the blow pipe 10 and other pipes are closed. After that, the input port 2 is opened as shown in FIG. 2, and a predetermined amount of the transported material is supplied from the input port 2 into the bag body. The above-mentioned supply of the transported article in the bag, by inserting the distal end portion of the transported article supply pipe into the inside of the input port 2, in combination with the action of the suspending tool, requires almost no manpower. It can be done easily and smoothly.

After the supply of the transported material into the bag body is completed, under the action of each of the tightening cord 2a and the closing rope 2c,
The charging port 2 is completely closed, and the hanging state of the bag body 1 by the hanging tool is released. After the filling of the transported material is completed in this way, the bag body 1 is transferred together with the pallet 4 to a transportation means such as a truck and transported to a destination. After reaching the destination, the cargo is unloaded by a forklift or other cargo handling device, and after the temporary storage or without the temporary storage, the flexible container is transferred to a predetermined receiving facility, and the cargo is discharged there.

In this discharge, the discharge pipe 5 is connected to the cargo receiving equipment, and the piping unit on the side of the cargo receiving equipment is connected to each of the air supply pipe 8 and the blowing pipe 10. Here, first, the discharge pipe 5 is connected. Each of the valve provided in the blow pipe and the valve provided in the blow pipe 10 is opened, and the pressurized air supplied from the blow pipe 10 discharges the transport material accumulated in the discharge pipe. After that, the valves of the pipes 5 and 10 are closed, and pressurized air is supplied from the air supply pipe 8.
This causes an increase in the internal pressure of the shape-retaining chamber, and thus the bag body 1. At this time, the pressurized air blown from the gas blowing pipe 7 into the shape-retaining chamber pressurizes the aeration film 6 substantially evenly under the action of the gas dispersion film 9.

As a result, the pressure inside the shape-retaining chamber is directly connected, and the pressure inside the bag is sufficiently increased by the pressurized air that has permeated the aeration membrane 6. Opening the valve initiates the discharge of the package to the receiving facility. This discharge here is carried out sufficiently smoothly due to the increase in the internal pressure of the bag body 1 and the weight of the transported material itself, and moreover, the air layer formed on the film through the aeration membrane 6 is transported. Since it reduces the frictional force between the object and the aeration film 6,
The discharge will be performed more smoothly and quickly.

Therefore, even in the case of this discharge, the discharged goods can be completely discharged in a very simple and quick manner with almost no manpower required. Here, in the case where the discharge pipe 5 arranged on the pallet 4 is connected to the cargo receiving facility to discharge the transport object as in the illustrated example, the generation of dust is prevented and the working environment is sufficiently improved. Can be maintained. By the way, when the discharge pipe is clogged with the discharge pipe during the discharge of the transport product, the valve of the blow pipe 10 connected to the discharge pipe 5 is opened, and the pressurized air from the blow pipe 10 is discharged into the discharge pipe. Blow can effectively eliminate slippage. From the bag body 1 as described above,
After the complete discharge of the package, the bag 1 can be folded and returned as a very compact one, as described in the prior art.

FIG. 8 is a cross-sectional view showing another example of the shape-retaining chamber. This example is located between the aeration film 6 and the bottom of the bag body and is close to the aeration film 6, and is almost the same as that. When a gas impermeable film body 12 having a similar shape is laid out, a gas blowing port that opens between the film body 12 and the aeration film 6 is provided at the bottom of the bag, and the gas impermeable film is also impermeable. Another gas inlet opening below the film body 12 is provided, for example, one gas inlet 7 is connected to the air supply pipe 8 in the same manner as described above, and the other gas inlet 13
Are connected to the blow-in pipe 10 via valves.

According to this example, in particular, the gas inlet 13
By blowing the pressurized air through it, the inclination of aeration can be formed regardless of the amount of the transported material in the bag, so that the aeration effect is further enhanced, and the discharge is smoothly performed along the slide. Compared with the above-mentioned embodiment, even when there are many items to be transported in the bag body, since the aeration inclination angle is firmly formed, smooth and efficient discharge is possible.

[0032]

As described above, according to the present invention, not only the flexible container itself can sufficiently exhibit its original function, but also the man-hours required for filling and discharging the transported object can be sufficiently reduced, and the transported object can be achieved. Complete discharge can be made extremely simple and quick.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention.

FIG. 2 is a partial sectional front view of the bag body.

FIG. 3 is a plan view and a bottom view of the bag body.

FIG. 4 is a plan view of an aeration film.

FIG. 5 is a diagram showing a gas dispersion film.

FIG. 6 is a partial cross-sectional plan view showing a pallet and piping therefor.

FIG. 7 is a diagram showing a connection state of an exhaust pipe and an air supply pipe to a bottom portion of a bag body.

FIG. 8 is a diagram showing another embodiment of the shape-retaining chamber.

[Explanation of symbols]

 1 Bag 2 Transported Material Input Port 2a Tightening String 2c Closing Rope 3 Transported Material Discharge Port 4 Pallets 4a, 4b Holes 4c Top Plate 5 Discharge Pipe 6 Aeration Membrane 7, 13 Gas Inlet Port 8 Air Pipe 8a Pipe End Flange 8b Flexible Part 9 Gas dispersion film 10 Blow-up tube 12 Membrane body

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Daisaku Maeda 813 Hinoguchi, Matsudo City, Chiba Prefecture (72) Inventor Susumu Tokita 6-28-12 Minamioi, Shinagawa-ku, Tokyo Inside the National Marine Plastics Co., Ltd. (72) Invention Takeshi Nakayama 2-8-33 Murota, Chigasaki-shi, Kanagawa (72) Inventor Toru Kurimoto 150-7 Kashio-cho, Totsuka-ku, Yokohama-shi, Kanagawa

Claims (7)

[Claims] 1. A package input port and a discharge port are provided at the top and the bottom of a flexible bag having a reinforcing layer, respectively.
A pallet is attached to the outside of the bag body around the transport material discharge port, and inside the bag body around the transport material discharge port,
A flexible container in which an aeration film is extended, and at least one gas blowing port is provided below the aeration film at the bottom of the bag. 2. The flexible container according to claim 1, wherein the transport material discharge port is connected to a discharge pipe arranged on the pallet, and the gas blowing port is connected to an air supply pipe also arranged on the pallet. 3. The flexible container according to claim 2, wherein a flexible portion is provided in a position near the gas blowing port of the air supply pipe. 4. The flexible container according to claim 2, wherein a blowing pipe is connected to the discharge pipe. 5. The flexible container according to any one of claims 1 to 4, wherein the aeration membrane is extended in a posture in which the height thereof gradually increases as the distance from the transportation object discharge port increases. 6. The flexible container according to claim 1, wherein a gas dispersion film is provided between the aeration film and the gas blowing port. 7. Between the aeration membrane and the bottom of the bag,
A gas impermeable film body located in proximity to the aeration film is extended, and at the bottom of the bag body, a gas blowing port that opens between the gas impermeable film body and the aeration film is provided, The flexible container according to any one of claims 1 to 6, wherein another gas blowing port that opens below the gas-impermeable membrane is provided.